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binutils-gdb/gdb/dwarf2read.c

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* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* DWARF 2 debugging format support for GDB.
* dwarf2read.c (read_subroutine_type): Set TYPE_FLAG_PROTOTYPED on C++ functions. * valops.c (value_arg_coerce): Add new argument to indicate whether the function has a prototype, handle integer and float promotions accordingly. (call_function_by_hand): Always call value_arg_coerce, pass down prototype information.
1998-05-23 17:31:41 +08:00
Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
Inc. with support from Florida State University (under contract
with the Ada Joint Program Office), and Silicon Graphics, Inc.
Initial contribution by Brent Benson, Harris Computer Systems, Inc.,
based on Fred Fish's (Cygnus Support) implementation of DWARF 1
support in dwarfread.c
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "bfd.h"
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
#include "elf-bfd.h"
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#include "symtab.h"
#include "gdbtypes.h"
#include "symfile.h"
#include "objfiles.h"
#include "elf/dwarf2.h"
#include "buildsym.h"
#include "demangle.h"
#include "expression.h"
#include "language.h"
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#include "complaints.h"
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#include <fcntl.h>
* defs.h: Define CONST_PTR as blank if compiling with Microsoft C, else it's `const'. * c-lang.c c-lang.h ch-lang.c f-lang.c language.c m2-lang.c scm-lang.c: Microsoft C can't hack const pointers. Use CONST_PTR macro instead. * configure configure.in defs.h: Use AC_C_CONST to figure out if the compiler supports const. Gets rid of some cruft in defs.h. * dwarf2read.c: <string.h> -> "gdb_string.h" * remote-sim.c: Add prototypes. Fix call to gdbsim_kill. * sparcl-tdep.c (download): Add prototypes to write_routine and start_routine args. * mswin/gdbwin.c: Don't include both varargs.h AND stdarg.h. Get rid of varargs.h Include string.h. * (gdbwin_update gdbwin_fputs regs_changed_f bpt_changed_f update): Fix prototypes, fix calls. * (update): Return value for catch_errors. * (run_execute_command togdb_command_from_tty togdb_command): Cleanup catching of errors from calls to execute_command. Also, dup command string to avoid modifying const strings. * (togdb_breakinfo_i_init togdb_breakinfo_i_next): Use 0 instead of NULL when see if b->address isn't set. * (bi_disable_bpt bi_enable_bpt bi_delete_all bi_delete_breakpoint): Add arg to calls to update. * (gui_command): Add prototype. * (mswin_query): Fix prototype. * (_initialize_gdbwin): Dup string to avoid modifying const. * (info_path togdb_get_info_path): Remove const from decls cuz this can't be const (it points at malloc'ed memory). * (togdb_searchpath): Remove const from path. Dup string to avoid modifying const strings. * rindex -> strrchr. * (gdbwin_list_symbols): Regexp param is const. * Fix lots of refs to psymtabs to deref correct pointers. * (togdb_set_breakpoint_sal): Call set_breakpoint_sal with sal, not &sal. * mswin/gdbwin.h (togdb_searchpath togdb_get_info_path toget_set_info_path): Fix prototypes to match reality. * mswin/gui.cpp: Define _beginthreadex and _endthreadex routines with proper prototypes. * mswin/iface.cpp (gdbwin_fputs): Define with correct number of args. * mswin/ser-win32s.c: Fix defs of min and max. * mswin/serdll32.c (OpenComm16): Make cbInQueue and cbOutQueue be USHORT. * (WriteComm16): Change lpBug from LPVOID to LPCSTR. * mswin/serdll32.h: Fix prototypes for OpenComm16 and WriteComm16.
1996-08-13 08:01:37 +08:00
#include "gdb_string.h"
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#include <sys/types.h>
/* .debug_info header for a compilation unit
Because of alignment constraints, this structure has padding and cannot
be mapped directly onto the beginning of the .debug_info section. */
typedef struct comp_unit_header
{
unsigned int length; /* length of the .debug_info
contribution */
unsigned short version; /* version number -- 2 for DWARF
version 2 */
unsigned int abbrev_offset; /* offset into .debug_abbrev section */
unsigned char addr_size; /* byte size of an address -- 4 */
}
_COMP_UNIT_HEADER;
#define _ACTUAL_COMP_UNIT_HEADER_SIZE 11
/* .debug_pubnames header
Because of alignment constraints, this structure has padding and cannot
be mapped directly onto the beginning of the .debug_info section. */
typedef struct pubnames_header
{
unsigned int length; /* length of the .debug_pubnames
contribution */
unsigned char version; /* version number -- 2 for DWARF
version 2 */
unsigned int info_offset; /* offset into .debug_info section */
unsigned int info_size; /* byte size of .debug_info section
portion */
}
_PUBNAMES_HEADER;
#define _ACTUAL_PUBNAMES_HEADER_SIZE 13
/* .debug_pubnames header
Because of alignment constraints, this structure has padding and cannot
be mapped directly onto the beginning of the .debug_info section. */
typedef struct aranges_header
{
unsigned int length; /* byte len of the .debug_aranges
contribution */
unsigned short version; /* version number -- 2 for DWARF
version 2 */
unsigned int info_offset; /* offset into .debug_info section */
unsigned char addr_size; /* byte size of an address */
unsigned char seg_size; /* byte size of segment descriptor */
}
_ARANGES_HEADER;
#define _ACTUAL_ARANGES_HEADER_SIZE 12
/* .debug_line statement program prologue
Because of alignment constraints, this structure has padding and cannot
be mapped directly onto the beginning of the .debug_info section. */
typedef struct statement_prologue
{
unsigned int total_length; /* byte length of the statement
information */
unsigned short version; /* version number -- 2 for DWARF
version 2 */
unsigned int prologue_length; /* # bytes between prologue &
stmt program */
unsigned char minimum_instruction_length; /* byte size of
smallest instr */
unsigned char default_is_stmt; /* initial value of is_stmt
register */
char line_base;
unsigned char line_range;
unsigned char opcode_base; /* number assigned to first special
opcode */
unsigned char *standard_opcode_lengths;
}
_STATEMENT_PROLOGUE;
/* offsets and sizes of debugging sections */
static file_ptr dwarf_info_offset;
static file_ptr dwarf_abbrev_offset;
static file_ptr dwarf_line_offset;
static file_ptr dwarf_pubnames_offset;
static file_ptr dwarf_aranges_offset;
static file_ptr dwarf_loc_offset;
static file_ptr dwarf_macinfo_offset;
static file_ptr dwarf_str_offset;
static unsigned int dwarf_info_size;
static unsigned int dwarf_abbrev_size;
static unsigned int dwarf_line_size;
static unsigned int dwarf_pubnames_size;
static unsigned int dwarf_aranges_size;
static unsigned int dwarf_loc_size;
static unsigned int dwarf_macinfo_size;
static unsigned int dwarf_str_size;
/* names of the debugging sections */
#define INFO_SECTION ".debug_info"
#define ABBREV_SECTION ".debug_abbrev"
#define LINE_SECTION ".debug_line"
#define PUBNAMES_SECTION ".debug_pubnames"
#define ARANGES_SECTION ".debug_aranges"
#define LOC_SECTION ".debug_loc"
#define MACINFO_SECTION ".debug_macinfo"
#define STR_SECTION ".debug_str"
/* local data types */
/* The data in a compilation unit header looks like this. */
struct comp_unit_head
{
Check the abbrev offset found in the .debug_info section before using it.
1997-11-26 20:35:07 +08:00
unsigned int length;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
short version;
Check the abbrev offset found in the .debug_info section before using it.
1997-11-26 20:35:07 +08:00
unsigned int abbrev_offset;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
unsigned char addr_size;
};
/* The data in the .debug_line statement prologue looks like this. */
struct line_head
{
unsigned int total_length;
unsigned short version;
unsigned int prologue_length;
unsigned char minimum_instruction_length;
unsigned char default_is_stmt;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
int line_base;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
unsigned char line_range;
unsigned char opcode_base;
unsigned char *standard_opcode_lengths;
};
/* When we construct a partial symbol table entry we only
need this much information. */
struct partial_die_info
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
enum dwarf_tag tag;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
unsigned char has_children;
unsigned char is_external;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
unsigned char is_declaration;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
unsigned char has_type;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
unsigned int offset;
unsigned int abbrev;
char *name;
CORE_ADDR lowpc;
CORE_ADDR highpc;
struct dwarf_block *locdesc;
unsigned int language;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
char *sibling;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
};
/* This data structure holds the information of an abbrev. */
struct abbrev_info
{
unsigned int number; /* number identifying abbrev */
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
enum dwarf_tag tag; /* dwarf tag */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
int has_children; /* boolean */
unsigned int num_attrs; /* number of attributes */
struct attr_abbrev *attrs; /* an array of attribute descriptions */
struct abbrev_info *next; /* next in chain */
};
struct attr_abbrev
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
enum dwarf_attribute name;
enum dwarf_form form;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
};
/* This data structure holds a complete die structure. */
struct die_info
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
enum dwarf_tag tag; /* Tag indicating type of die */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
unsigned short has_children; /* Does the die have children */
unsigned int abbrev; /* Abbrev number */
unsigned int offset; /* Offset in .debug_info section */
unsigned int num_attrs; /* Number of attributes */
struct attribute *attrs; /* An array of attributes */
struct die_info *next_ref; /* Next die in ref hash table */
struct die_info *next; /* Next die in linked list */
struct type *type; /* Cached type information */
};
/* Attributes have a name and a value */
struct attribute
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
enum dwarf_attribute name;
enum dwarf_form form;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
union
{
char *str;
struct dwarf_block *blk;
unsigned int unsnd;
int snd;
CORE_ADDR addr;
}
u;
};
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Get at parts of an attribute structure */
#define DW_STRING(attr) ((attr)->u.str)
#define DW_UNSND(attr) ((attr)->u.unsnd)
#define DW_BLOCK(attr) ((attr)->u.blk)
#define DW_SND(attr) ((attr)->u.snd)
#define DW_ADDR(attr) ((attr)->u.addr)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Blocks are a bunch of untyped bytes. */
struct dwarf_block
{
unsigned int size;
char *data;
};
/* We only hold one compilation unit's abbrevs in
memory at any one time. */
#ifndef ABBREV_HASH_SIZE
#define ABBREV_HASH_SIZE 121
#endif
#ifndef ATTR_ALLOC_CHUNK
#define ATTR_ALLOC_CHUNK 4
#endif
static struct abbrev_info *dwarf2_abbrevs[ABBREV_HASH_SIZE];
/* A hash table of die offsets for following references. */
#ifndef REF_HASH_SIZE
#define REF_HASH_SIZE 1021
#endif
static struct die_info *die_ref_table[REF_HASH_SIZE];
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Obstack for allocating temporary storage used during symbol reading. */
static struct obstack dwarf2_tmp_obstack;
/* Offset to the first byte of the current compilation unit header,
for resolving relative reference dies. */
static unsigned int cu_header_offset;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Allocate fields for structs, unions and enums in this size. */
#ifndef DW_FIELD_ALLOC_CHUNK
#define DW_FIELD_ALLOC_CHUNK 4
#endif
/* The language we are debugging. */
static enum language cu_language;
static const struct language_defn *cu_language_defn;
/* Actually data from the sections. */
static char *dwarf_info_buffer;
static char *dwarf_abbrev_buffer;
static char *dwarf_line_buffer;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* A zeroed version of a partial die for initialization purposes. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct partial_die_info zeroed_partial_die;
/* The generic symbol table building routines have separate lists for
file scope symbols and all all other scopes (local scopes). So
we need to select the right one to pass to add_symbol_to_list().
We do it by keeping a pointer to the correct list in list_in_scope.
FIXME: The original dwarf code just treated the file scope as the first
local scope, and all other local scopes as nested local scopes, and worked
fine. Check to see if we really need to distinguish these
in buildsym.c. */
static struct pending **list_in_scope = &file_symbols;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* FIXME: The following variables pass additional information from
decode_locdesc to the caller. */
static int optimized_out; /* Kludge to identify optimized out variables */
static int isreg; /* Kludge to identify register variables */
static int offreg; /* Kludge to identify basereg references */
static int basereg; /* Which base register is it relative to? */
static int islocal; /* Kludge to identify local variables */
/* DW_AT_frame_base values for the current function.
frame_base_reg is -1 if DW_AT_frame_base is missing, otherwise it
contains the register number for the frame register.
frame_base_offset is the offset from the frame register to the
virtual stack frame. */
static int frame_base_reg;
static CORE_ADDR frame_base_offset;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* This value is added to each symbol value. FIXME: Generalize to
the section_offsets structure used by dbxread (once this is done,
pass the appropriate section number to end_symtab). */
static CORE_ADDR baseaddr; /* Add to each symbol value */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* We put a pointer to this structure in the read_symtab_private field
of the psymtab.
The complete dwarf information for an objfile is kept in the
psymbol_obstack, so that absolute die references can be handled.
Most of the information in this structure is related to an entire
object file and could be passed via the sym_private field of the objfile.
It is however conceivable that dwarf2 might not be the only type
of symbols read from an object file. */
struct dwarf2_pinfo
{
/* Pointer to start of dwarf info buffer for the objfile. */
char *dwarf_info_buffer;
/* Offset in dwarf_info_buffer for this compilation unit. */
unsigned long dwarf_info_offset;
/* Pointer to start of dwarf abbreviation buffer for the objfile. */
char *dwarf_abbrev_buffer;
/* Size of dwarf abbreviation section for the objfile. */
unsigned int dwarf_abbrev_size;
/* Pointer to start of dwarf line buffer for the objfile. */
char *dwarf_line_buffer;
};
#define PST_PRIVATE(p) ((struct dwarf2_pinfo *)(p)->read_symtab_private)
#define DWARF_INFO_BUFFER(p) (PST_PRIVATE(p)->dwarf_info_buffer)
#define DWARF_INFO_OFFSET(p) (PST_PRIVATE(p)->dwarf_info_offset)
#define DWARF_ABBREV_BUFFER(p) (PST_PRIVATE(p)->dwarf_abbrev_buffer)
#define DWARF_ABBREV_SIZE(p) (PST_PRIVATE(p)->dwarf_abbrev_size)
#define DWARF_LINE_BUFFER(p) (PST_PRIVATE(p)->dwarf_line_buffer)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Maintain an array of referenced fundamental types for the current
compilation unit being read. For DWARF version 1, we have to construct
the fundamental types on the fly, since no information about the
fundamental types is supplied. Each such fundamental type is created by
calling a language dependent routine to create the type, and then a
pointer to that type is then placed in the array at the index specified
by it's FT_<TYPENAME> value. The array has a fixed size set by the
FT_NUM_MEMBERS compile time constant, which is the number of predefined
fundamental types gdb knows how to construct. */
static struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte,
but this would require a corresponding change in unpack_field_as_long
and friends. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static int bits_per_byte = 8;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* The routines that read and process dies for a C struct or C++ class
pass lists of data member fields and lists of member function fields
in an instance of a field_info structure, as defined below. */
struct field_info
{
/* List of data member and baseclasses fields. */
struct nextfield
{
struct nextfield *next;
int accessibility;
int virtuality;
struct field field;
} *fields;
/* Number of fields. */
int nfields;
/* Number of baseclasses. */
int nbaseclasses;
/* Set if the accesibility of one of the fields is not public. */
int non_public_fields;
/* Member function fields array, entries are allocated in the order they
are encountered in the object file. */
struct nextfnfield
{
struct nextfnfield *next;
struct fn_field fnfield;
} *fnfields;
/* Member function fieldlist array, contains name of possibly overloaded
member function, number of overloaded member functions and a pointer
to the head of the member function field chain. */
struct fnfieldlist
{
char *name;
int length;
struct nextfnfield *head;
} *fnfieldlists;
/* Number of entries in the fnfieldlists array. */
int nfnfields;
};
/* FIXME: Kludge to mark a varargs function type for C++ member function
argument processing. */
#define TYPE_FLAG_VARARGS (1 << 10)
/* Dwarf2 has no clean way to discern C++ static and non-static member
functions. G++ helps GDB by marking the first parameter for non-static
member functions (which is the this pointer) as artificial.
We pass this information between dwarf2_add_member_fn and
read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */
#define TYPE_FIELD_ARTIFICIAL TYPE_FIELD_BITPOS
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Various complaints about symbol reading that don't abort the process */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct complaint dwarf2_const_ignored =
{
"type qualifier 'const' ignored", 0, 0
};
static struct complaint dwarf2_volatile_ignored =
{
"type qualifier 'volatile' ignored", 0, 0
};
static struct complaint dwarf2_non_const_array_bound_ignored =
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
"non-constant array bounds form '%s' ignored", 0, 0
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
};
static struct complaint dwarf2_missing_line_number_section =
{
"missing .debug_line section", 0, 0
};
static struct complaint dwarf2_mangled_line_number_section =
{
"mangled .debug_line section", 0, 0
};
static struct complaint dwarf2_unsupported_die_ref_attr =
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
"unsupported die ref attribute form: '%s'", 0, 0
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
};
static struct complaint dwarf2_unsupported_stack_op =
{
"unsupported stack op: '%s'", 0, 0
};
static struct complaint dwarf2_unsupported_tag =
{
"unsupported tag: '%s'", 0, 0
};
static struct complaint dwarf2_unsupported_at_encoding =
{
"unsupported DW_AT_encoding: '%s'", 0, 0
};
static struct complaint dwarf2_unsupported_at_frame_base =
{
"unsupported DW_AT_frame_base for function '%s'", 0, 0
};
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
static struct complaint dwarf2_unexpected_tag =
{
"unexepected tag in read_type_die: '%s'", 0, 0
};
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct complaint dwarf2_missing_at_frame_base =
{
"DW_AT_frame_base missing for DW_OP_fbreg", 0, 0
};
static struct complaint dwarf2_bad_static_member_name =
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
"unrecognized static data member name '%s'", 0, 0
};
static struct complaint dwarf2_unsupported_accessibility =
{
"unsupported accessibility %d", 0, 0
};
static struct complaint dwarf2_bad_member_name_complaint =
{
"cannot extract member name from '%s'", 0, 0
};
static struct complaint dwarf2_missing_member_fn_type_complaint =
{
"member function type missing for '%s'", 0, 0
};
static struct complaint dwarf2_vtbl_not_found_complaint =
{
"virtual function table pointer not found when defining class '%s'", 0, 0
};
static struct complaint dwarf2_absolute_sibling_complaint =
{
"ignoring absolute DW_AT_sibling", 0, 0
};
static struct complaint dwarf2_const_value_length_mismatch =
{
"const value length mismatch for '%s', got %d, expected %d", 0, 0
};
static struct complaint dwarf2_unsupported_const_value_attr =
{
"unsupported const value attribute form: '%s'", 0, 0
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
};
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Remember the addr_size read from the dwarf.
If a target expects to link compilation units with differing address
sizes, gdb needs to be sure that the appropriate size is here for
whatever scope is currently getting read. */
static int address_size;
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
/* Some elf32 object file formats while linked for a 32 bit address
space contain debug information that has assumed 64 bit
addresses. Eg 64 bit MIPS target produced by GCC/GAS/LD where the
symbol table contains 32bit address values while its .debug_info
section contains 64 bit address values.
ADDRESS_SIGNIFICANT_SIZE specifies the number significant bits in
the ADDRESS_SIZE bytes read from the file */
static int address_significant_size;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Externals references. */
extern int info_verbose; /* From main.c; nonzero => verbose */
/* local function prototypes */
static void dwarf2_locate_sections PARAMS ((bfd *, asection *, PTR));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#if 0
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static void dwarf2_build_psymtabs_easy PARAMS ((struct objfile *,
struct section_offsets *,
int));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static void dwarf2_build_psymtabs_hard PARAMS ((struct objfile *,
struct section_offsets *,
int));
static char *scan_partial_symbols PARAMS ((char *, struct objfile *,
CORE_ADDR *, CORE_ADDR *));
static void add_partial_symbol PARAMS ((struct partial_die_info *,
struct objfile *));
static void dwarf2_psymtab_to_symtab PARAMS ((struct partial_symtab *));
static void psymtab_to_symtab_1 PARAMS ((struct partial_symtab *));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static char *dwarf2_read_section PARAMS ((struct objfile *, file_ptr,
unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static void dwarf2_read_abbrevs PARAMS ((bfd *, unsigned int));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void dwarf2_empty_abbrev_table PARAMS ((PTR));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct abbrev_info *dwarf2_lookup_abbrev PARAMS ((unsigned int));
static char *read_partial_die PARAMS ((struct partial_die_info *,
bfd *, char *, int *));
static char *read_full_die PARAMS ((struct die_info **, bfd *, char *));
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
static char *read_attribute PARAMS ((struct attribute *, struct attr_abbrev *,
bfd *, char *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static unsigned int read_1_byte PARAMS ((bfd *, char *));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static int read_1_signed_byte PARAMS ((bfd *, char *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static unsigned int read_2_bytes PARAMS ((bfd *, char *));
static unsigned int read_4_bytes PARAMS ((bfd *, char *));
static unsigned int read_8_bytes PARAMS ((bfd *, char *));
static CORE_ADDR read_address PARAMS ((bfd *, char *));
static char *read_n_bytes PARAMS ((bfd *, char *, unsigned int));
static char *read_string PARAMS ((bfd *, char *, unsigned int *));
static unsigned int read_unsigned_leb128 PARAMS ((bfd *, char *,
unsigned int *));
static int read_signed_leb128 PARAMS ((bfd *, char *, unsigned int *));
static void set_cu_language PARAMS ((unsigned int));
static struct attribute *dwarf_attr PARAMS ((struct die_info *,
unsigned int));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void dwarf_decode_lines PARAMS ((unsigned int, char *, bfd *));
static void dwarf2_start_subfile PARAMS ((char *, char *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct symbol *new_symbol PARAMS ((struct die_info *, struct type *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
static void dwarf2_const_value PARAMS ((struct attribute *, struct symbol *,
struct objfile *));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct type *die_type PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct type *die_containing_type PARAMS ((struct die_info *,
struct objfile *));
#if 0
static struct type *type_at_offset PARAMS ((unsigned int, struct objfile *));
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct type *tag_type_to_type PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_type_die PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_typedef PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_base_type PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_file_scope PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_func_scope PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_lexical_block_scope PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
static int dwarf2_get_pc_bounds PARAMS ((struct die_info *,
CORE_ADDR *, CORE_ADDR *,
struct objfile *));
static void dwarf2_add_field PARAMS ((struct field_info *, struct die_info *,
struct objfile *));
static void dwarf2_attach_fields_to_type PARAMS ((struct field_info *,
struct type *,
struct objfile *));
static char *skip_member_fn_name PARAMS ((char *));
static void dwarf2_add_member_fn PARAMS ((struct field_info *,
struct die_info *, struct type *,
struct objfile *objfile));
static void dwarf2_attach_fn_fields_to_type PARAMS ((struct field_info *,
struct type *,
struct objfile *));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_structure_scope PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_common_block PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_enumeration PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
static struct type *dwarf_base_type PARAMS ((int, int, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static CORE_ADDR decode_locdesc PARAMS ((struct dwarf_block *,
struct objfile *));
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
static void read_array_type PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_tag_pointer_type PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_tag_ptr_to_member_type PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_tag_reference_type PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_tag_const_type PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_tag_volatile_type PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_tag_string_type PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void read_subroutine_type PARAMS ((struct die_info *,
struct objfile *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct die_info *read_comp_unit PARAMS ((char *, bfd *));
static void free_die_list PARAMS ((struct die_info *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static void process_die PARAMS ((struct die_info *, struct objfile *));
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
static char *dwarf2_linkage_name PARAMS ((struct die_info *));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static char *dwarf_tag_name PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static char *dwarf_attr_name PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static char *dwarf_form_name PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static char *dwarf_stack_op_name PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static char *dwarf_bool_name PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static char *dwarf_type_encoding_name PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#if 0
static char *dwarf_cfi_name PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct die_info *copy_die PARAMS ((struct die_info *));
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct die_info *sibling_die PARAMS ((struct die_info *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
void dump_die PARAMS ((struct die_info *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
void dump_die_list PARAMS ((struct die_info *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
void store_in_ref_table PARAMS ((unsigned int, struct die_info *));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void dwarf2_empty_die_ref_table PARAMS ((void));
static unsigned int dwarf2_get_ref_die_offset PARAMS ((struct attribute *));
struct die_info *follow_die_ref PARAMS ((unsigned int));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct type *dwarf2_fundamental_type PARAMS ((struct objfile *, int));
/* memory allocation interface */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void dwarf2_free_tmp_obstack PARAMS ((PTR));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct dwarf_block *dwarf_alloc_block PARAMS ((void));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct abbrev_info *dwarf_alloc_abbrev PARAMS ((void));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct die_info *dwarf_alloc_die PARAMS ((void));
/* Try to locate the sections we need for DWARF 2 debugging
information and return true if we have enough to do something. */
int
dwarf2_has_info (abfd)
bfd *abfd;
{
dwarf_info_offset = dwarf_abbrev_offset = dwarf_line_offset = 0;
bfd_map_over_sections (abfd, dwarf2_locate_sections, NULL);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (dwarf_info_offset && dwarf_abbrev_offset)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
return 1;
}
else
{
return 0;
}
}
/* This function is mapped across the sections and remembers the
offset and size of each of the debugging sections we are interested
in. */
static void
dwarf2_locate_sections (ignore_abfd, sectp, ignore_ptr)
bfd *ignore_abfd;
asection *sectp;
PTR ignore_ptr;
{
if (STREQ (sectp->name, INFO_SECTION))
{
dwarf_info_offset = sectp->filepos;
dwarf_info_size = bfd_get_section_size_before_reloc (sectp);
}
else if (STREQ (sectp->name, ABBREV_SECTION))
{
dwarf_abbrev_offset = sectp->filepos;
dwarf_abbrev_size = bfd_get_section_size_before_reloc (sectp);
}
else if (STREQ (sectp->name, LINE_SECTION))
{
dwarf_line_offset = sectp->filepos;
dwarf_line_size = bfd_get_section_size_before_reloc (sectp);
}
else if (STREQ (sectp->name, PUBNAMES_SECTION))
{
dwarf_pubnames_offset = sectp->filepos;
dwarf_pubnames_size = bfd_get_section_size_before_reloc (sectp);
}
else if (STREQ (sectp->name, ARANGES_SECTION))
{
dwarf_aranges_offset = sectp->filepos;
dwarf_aranges_size = bfd_get_section_size_before_reloc (sectp);
}
else if (STREQ (sectp->name, LOC_SECTION))
{
dwarf_loc_offset = sectp->filepos;
dwarf_loc_size = bfd_get_section_size_before_reloc (sectp);
}
else if (STREQ (sectp->name, MACINFO_SECTION))
{
dwarf_macinfo_offset = sectp->filepos;
dwarf_macinfo_size = bfd_get_section_size_before_reloc (sectp);
}
else if (STREQ (sectp->name, STR_SECTION))
{
dwarf_str_offset = sectp->filepos;
dwarf_str_size = bfd_get_section_size_before_reloc (sectp);
}
}
/* Build a partial symbol table. */
void
dwarf2_build_psymtabs (objfile, section_offsets, mainline)
struct objfile *objfile;
struct section_offsets *section_offsets;
int mainline;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* We definitely need the .debug_info and .debug_abbrev sections */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dwarf_info_buffer = dwarf2_read_section (objfile,
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
dwarf_info_offset,
dwarf_info_size);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dwarf_abbrev_buffer = dwarf2_read_section (objfile,
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
dwarf_abbrev_offset,
dwarf_abbrev_size);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dwarf_line_buffer = dwarf2_read_section (objfile,
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
dwarf_line_offset,
dwarf_line_size);
if (mainline || objfile->global_psymbols.size == 0 ||
objfile->static_psymbols.size == 0)
{
init_psymbol_list (objfile, 1024);
}
#if 0
if (dwarf_aranges_offset && dwarf_pubnames_offset)
{
/* Things are significanlty easier if we have .debug_aranges and
.debug_pubnames sections */
dwarf2_build_psymtabs_easy (objfile, section_offsets, mainline);
}
else
#endif
/* only test this case for now */
{
/* In this case we have to work a bit harder */
dwarf2_build_psymtabs_hard (objfile, section_offsets, mainline);
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#if 0
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Build the partial symbol table from the information in the
.debug_pubnames and .debug_aranges sections. */
static void
dwarf2_build_psymtabs_easy (objfile, section_offsets, mainline)
struct objfile *objfile;
struct section_offsets *section_offsets;
int mainline;
{
bfd *abfd = objfile->obfd;
char *aranges_buffer, *pubnames_buffer;
char *aranges_ptr, *pubnames_ptr;
unsigned int entry_length, version, info_offset, info_size;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
pubnames_buffer = dwarf2_read_section (objfile,
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
dwarf_pubnames_offset,
dwarf_pubnames_size);
pubnames_ptr = pubnames_buffer;
while ((pubnames_ptr - pubnames_buffer) < dwarf_pubnames_size)
{
entry_length = read_4_bytes (abfd, pubnames_ptr);
pubnames_ptr += 4;
version = read_1_byte (abfd, pubnames_ptr);
pubnames_ptr += 1;
info_offset = read_4_bytes (abfd, pubnames_ptr);
pubnames_ptr += 4;
info_size = read_4_bytes (abfd, pubnames_ptr);
pubnames_ptr += 4;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
aranges_buffer = dwarf2_read_section (objfile,
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
dwarf_aranges_offset,
dwarf_aranges_size);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Build the partial symbol table by doing a quick pass through the
.debug_info and .debug_abbrev sections. */
static void
dwarf2_build_psymtabs_hard (objfile, section_offsets, mainline)
struct objfile *objfile;
struct section_offsets *section_offsets;
int mainline;
{
/* Instead of reading this into a big buffer, we should probably use
mmap() on architectures that support it. (FIXME) */
bfd *abfd = objfile->obfd;
char *info_ptr, *abbrev_ptr;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
char *beg_of_comp_unit;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct comp_unit_head cu_header;
struct partial_die_info comp_unit_die;
struct partial_symtab *pst;
struct cleanup *back_to;
int comp_unit_has_pc_info;
CORE_ADDR lowpc, highpc;
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
/* Number of bytes of any addresses that are signficant */
address_significant_size = get_elf_backend_data (abfd)->s->arch_size / 8;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
info_ptr = dwarf_info_buffer;
abbrev_ptr = dwarf_abbrev_buffer;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
obstack_init (&dwarf2_tmp_obstack);
back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL);
while ((unsigned int) (info_ptr - dwarf_info_buffer)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
+ ((info_ptr - dwarf_info_buffer) % 4) < dwarf_info_size)
{
beg_of_comp_unit = info_ptr;
cu_header.length = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
cu_header.version = read_2_bytes (abfd, info_ptr);
info_ptr += 2;
cu_header.abbrev_offset = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
cu_header.addr_size = read_1_byte (abfd, info_ptr);
info_ptr += 1;
address_size = cu_header.addr_size;
if (cu_header.version != 2)
{
error ("Dwarf Error: wrong version in compilation unit header.");
return;
}
Check the abbrev offset found in the .debug_info section before using it.
1997-11-26 20:35:07 +08:00
if (cu_header.abbrev_offset >= dwarf_abbrev_size)
{
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6).",
(CVS is doing wierd things) Re-checkin fixes to code verifying dwarf debug info CU headers before using it.
1997-12-11 07:11:20 +08:00
(long) cu_header.abbrev_offset,
(long) (beg_of_comp_unit - dwarf_info_buffer));
Check the abbrev offset found in the .debug_info section before using it.
1997-11-26 20:35:07 +08:00
return;
}
* dwarf2read.c (dwarf2_build_psymtabs_hard): Check cu_header.length is within dwarf_info_buffer not dwarf_abbrev_buffer.
1997-12-10 14:30:04 +08:00
if (beg_of_comp_unit + cu_header.length + 4
(CVS is doing wierd things) Re-checkin fixes to code verifying dwarf debug info CU headers before using it.
1997-12-11 07:11:20 +08:00
> dwarf_info_buffer + dwarf_info_size)
Check the abbrev offset found in the .debug_info section before using it.
1997-11-26 20:35:07 +08:00
{
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0).",
(CVS is doing wierd things) Re-checkin fixes to code verifying dwarf debug info CU headers before using it.
1997-12-11 07:11:20 +08:00
(long) cu_header.length,
(long) (beg_of_comp_unit - dwarf_info_buffer));
Check the abbrev offset found in the .debug_info section before using it.
1997-11-26 20:35:07 +08:00
return;
}
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
if (address_size < address_significant_size)
{
error ("Dwarf Error: bad address size (%ld) in compilation unit header (offset 0x%lx + 11).",
(long) cu_header.addr_size,
(long) (beg_of_comp_unit - dwarf_info_buffer));
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Read the abbrevs for this compilation unit into a table */
dwarf2_read_abbrevs (abfd, cu_header.abbrev_offset);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
make_cleanup (dwarf2_empty_abbrev_table, NULL);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Read the compilation unit die */
info_ptr = read_partial_die (&comp_unit_die, abfd,
info_ptr, &comp_unit_has_pc_info);
/* Set the language we're debugging */
set_cu_language (comp_unit_die.language);
/* Allocate a new partial symbol table structure */
pst = start_psymtab_common (objfile, section_offsets,
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
comp_unit_die.name ? comp_unit_die.name : "",
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
comp_unit_die.lowpc,
objfile->global_psymbols.next,
objfile->static_psymbols.next);
pst->read_symtab_private = (char *)
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
obstack_alloc (&objfile->psymbol_obstack, sizeof (struct dwarf2_pinfo));
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
cu_header_offset = beg_of_comp_unit - dwarf_info_buffer;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
DWARF_INFO_BUFFER(pst) = dwarf_info_buffer;
DWARF_INFO_OFFSET(pst) = beg_of_comp_unit - dwarf_info_buffer;
DWARF_ABBREV_BUFFER(pst) = dwarf_abbrev_buffer;
DWARF_ABBREV_SIZE(pst) = dwarf_abbrev_size;
DWARF_LINE_BUFFER(pst) = dwarf_line_buffer;
baseaddr = ANOFFSET (section_offsets, 0);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Store the function that reads in the rest of the symbol table */
pst->read_symtab = dwarf2_psymtab_to_symtab;
* dwarf2read.c (dwarf2_build_psymtabs_hard): Handle the case where a compilation unit die has no children (DW_TAG_compile_unit has DW_children_no). (scan_partial_symbols): Add comment for nesting_level.
1997-11-01 09:28:26 +08:00
/* Check if comp unit has_children.
If so, read the rest of the partial symbols from this comp unit.
If not, there's no more debug_info for this comp unit. */
if (comp_unit_die.has_children)
info_ptr = scan_partial_symbols (info_ptr, objfile, &lowpc, &highpc);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* If the compilation unit didn't have an explicit address range,
then use the information extracted from its child dies. */
if (!comp_unit_has_pc_info)
{
comp_unit_die.lowpc = lowpc;
comp_unit_die.highpc = highpc;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
pst->textlow = comp_unit_die.lowpc + baseaddr;
pst->texthigh = comp_unit_die.highpc + baseaddr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
pst->n_global_syms = objfile->global_psymbols.next -
(objfile->global_psymbols.list + pst->globals_offset);
pst->n_static_syms = objfile->static_psymbols.next -
(objfile->static_psymbols.list + pst->statics_offset);
sort_pst_symbols (pst);
/* If there is already a psymtab or symtab for a file of this
name, remove it. (If there is a symtab, more drastic things
also happen.) This happens in VxWorks. */
free_named_symtabs (pst->filename);
info_ptr = beg_of_comp_unit + cu_header.length + 4;
}
do_cleanups (back_to);
}
/* Read in all interesting dies to the end of the compilation unit. */
static char *
scan_partial_symbols (info_ptr, objfile, lowpc, highpc)
char *info_ptr;
struct objfile *objfile;
CORE_ADDR *lowpc;
CORE_ADDR *highpc;
{
bfd *abfd = objfile->obfd;
struct partial_die_info pdi;
* dwarf2read.c (dwarf2_build_psymtabs_hard): Handle the case where a compilation unit die has no children (DW_TAG_compile_unit has DW_children_no). (scan_partial_symbols): Add comment for nesting_level.
1997-11-01 09:28:26 +08:00
/* This function is called after we've read in the comp_unit_die in
order to read its children. We start the nesting level at 1 since
we have pushed 1 level down in order to read the comp unit's children.
The comp unit itself is at level 0, so we stop reading when we pop
back to that level. */
int nesting_level = 1;
int has_pc_info;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
*lowpc = ((CORE_ADDR) -1);
*highpc = ((CORE_ADDR) 0);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
while (nesting_level)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
info_ptr = read_partial_die (&pdi, abfd, info_ptr, &has_pc_info);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (pdi.name)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
switch (pdi.tag)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
case DW_TAG_subprogram:
if (has_pc_info)
{
if (pdi.lowpc < *lowpc)
{
*lowpc = pdi.lowpc;
}
if (pdi.highpc > *highpc)
{
*highpc = pdi.highpc;
}
if ((pdi.is_external || nesting_level == 1)
&& !pdi.is_declaration)
{
add_partial_symbol (&pdi, objfile);
}
}
break;
case DW_TAG_variable:
case DW_TAG_typedef:
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_enumeration_type:
if ((pdi.is_external || nesting_level == 1)
&& !pdi.is_declaration)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
add_partial_symbol (&pdi, objfile);
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
break;
case DW_TAG_enumerator:
/* File scope enumerators are added to the partial symbol
table. */
if (nesting_level == 2)
add_partial_symbol (&pdi, objfile);
break;
case DW_TAG_base_type:
/* File scope base type definitions are added to the partial
symbol table. */
if (nesting_level == 1)
add_partial_symbol (&pdi, objfile);
break;
default:
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* If the die has a sibling, skip to the sibling.
Do not skip enumeration types, we want to record their
enumerators. */
if (pdi.sibling && pdi.tag != DW_TAG_enumeration_type)
{
info_ptr = pdi.sibling;
}
else if (pdi.has_children)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Die has children, but the optional DW_AT_sibling attribute
is missing. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
nesting_level++;
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
if (pdi.tag == 0)
{
nesting_level--;
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* If we didn't find a lowpc, set it to highpc to avoid complaints
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
from `maint check'. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (*lowpc == ((CORE_ADDR) -1))
*lowpc = *highpc;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return info_ptr;
}
static void
add_partial_symbol (pdi, objfile)
struct partial_die_info *pdi;
struct objfile *objfile;
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
CORE_ADDR addr = 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
switch (pdi->tag)
{
case DW_TAG_subprogram:
if (pdi->is_external)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
prim_record_minimal_symbol (pdi->name, pdi->lowpc + baseaddr,
mst_text, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_BLOCK,
&objfile->global_psymbols,
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
0, pdi->lowpc + baseaddr, cu_language, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
else
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
prim_record_minimal_symbol (pdi->name, pdi->lowpc + baseaddr,
mst_file_text, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_BLOCK,
&objfile->static_psymbols,
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
0, pdi->lowpc + baseaddr, cu_language, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
break;
case DW_TAG_variable:
if (pdi->is_external)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Global Variable.
Don't enter into the minimal symbol tables as there is
a minimal symbol table entry from the ELF symbols already.
Enter into partial symbol table if it has a location
descriptor or a type.
If the location descriptor is missing, new_symbol will create
a LOC_UNRESOLVED symbol, the address of the variable will then
be determined from the minimal symbol table whenever the variable
is referenced.
The address for the partial symbol table entry is not
used by GDB, but it comes in handy for debugging partial symbol
table building. */
if (pdi->locdesc)
addr = decode_locdesc (pdi->locdesc, objfile);
if (pdi->locdesc || pdi->has_type)
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_STATIC,
&objfile->global_psymbols,
0, addr + baseaddr, cu_language, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
else
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Static Variable. Skip symbols without location descriptors. */
if (pdi->locdesc == NULL)
return;
addr = decode_locdesc (pdi->locdesc, objfile);
prim_record_minimal_symbol (pdi->name, addr + baseaddr,
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
mst_file_data, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_STATIC,
&objfile->static_psymbols,
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
0, addr + baseaddr, cu_language, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
break;
case DW_TAG_typedef:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
case DW_TAG_base_type:
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_TYPEDEF,
&objfile->static_psymbols,
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
0, (CORE_ADDR) 0, cu_language, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_enumeration_type:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Skip aggregate types without children, these are external
references. */
if (pdi->has_children == 0)
return;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
add_psymbol_to_list (pdi->name, strlen (pdi->name),
STRUCT_NAMESPACE, LOC_TYPEDEF,
&objfile->static_psymbols,
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
0, (CORE_ADDR) 0, cu_language, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
if (cu_language == language_cplus)
{
/* For C++, these implicitly act as typedefs as well. */
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_TYPEDEF,
&objfile->static_psymbols,
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
0, (CORE_ADDR) 0, cu_language, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
break;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_TAG_enumerator:
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_CONST,
&objfile->static_psymbols,
0, (CORE_ADDR) 0, cu_language, objfile);
break;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
default:
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
}
/* Expand this partial symbol table into a full symbol table. */
static void
dwarf2_psymtab_to_symtab (pst)
struct partial_symtab *pst;
{
/* FIXME: This is barely more than a stub. */
if (pst != NULL)
{
if (pst->readin)
{
warning ("bug: psymtab for %s is already read in.", pst->filename);
}
else
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (info_verbose)
{
printf_filtered ("Reading in symbols for %s...", pst->filename);
gdb_flush (gdb_stdout);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
psymtab_to_symtab_1 (pst);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Finish up the debug error message. */
if (info_verbose)
printf_filtered ("done.\n");
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
}
}
static void
psymtab_to_symtab_1 (pst)
struct partial_symtab *pst;
{
struct objfile *objfile = pst->objfile;
bfd *abfd = objfile->obfd;
struct comp_unit_head cu_header;
struct die_info *dies;
unsigned long offset;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
CORE_ADDR lowpc, highpc;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *child_die;
char *info_ptr;
struct symtab *symtab;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct cleanup *back_to;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Set local variables from the partial symbol table info. */
offset = DWARF_INFO_OFFSET(pst);
dwarf_info_buffer = DWARF_INFO_BUFFER(pst);
dwarf_abbrev_buffer = DWARF_ABBREV_BUFFER(pst);
dwarf_abbrev_size = DWARF_ABBREV_SIZE(pst);
dwarf_line_buffer = DWARF_LINE_BUFFER(pst);
baseaddr = ANOFFSET (pst->section_offsets, 0);
cu_header_offset = offset;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
info_ptr = dwarf_info_buffer + offset;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
obstack_init (&dwarf2_tmp_obstack);
back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL);
buildsym_init ();
make_cleanup (really_free_pendings, NULL);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* read in the comp_unit header */
cu_header.length = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
cu_header.version = read_2_bytes (abfd, info_ptr);
info_ptr += 2;
cu_header.abbrev_offset = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
cu_header.addr_size = read_1_byte (abfd, info_ptr);
info_ptr += 1;
/* Read the abbrevs for this compilation unit */
dwarf2_read_abbrevs (abfd, cu_header.abbrev_offset);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
make_cleanup (dwarf2_empty_abbrev_table, NULL);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
dies = read_comp_unit (info_ptr, abfd);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
make_cleanup (free_die_list, dies);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Do line number decoding in read_file_scope () */
process_die (dies, objfile);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (!dwarf2_get_pc_bounds (dies, &lowpc, &highpc, objfile))
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
/* Some compilers don't define a DW_AT_high_pc attribute for
the compilation unit. If the DW_AT_high_pc is missing,
synthesize it, by scanning the DIE's below the compilation unit. */
highpc = 0;
if (dies->has_children)
{
child_die = dies->next;
while (child_die && child_die->tag)
{
if (child_die->tag == DW_TAG_subprogram)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
CORE_ADDR low, high;
if (dwarf2_get_pc_bounds (child_die, &low, &high, objfile))
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
highpc = max (highpc, high);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
}
child_die = sibling_die (child_die);
}
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
symtab = end_symtab (highpc + baseaddr, objfile, 0);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Set symtab language to language from DW_AT_language.
If the compilation is from a C file generated by language preprocessors,
do not set the language if it was already deduced by start_subfile. */
if (symtab != NULL
&& !(cu_language == language_c && symtab->language != language_c))
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
symtab->language = cu_language;
}
pst->symtab = symtab;
pst->readin = 1;
sort_symtab_syms (pst->symtab);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
do_cleanups (back_to);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
/* Process a die and its children. */
static void
process_die (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
switch (die->tag)
{
case DW_TAG_padding:
break;
case DW_TAG_compile_unit:
read_file_scope (die, objfile);
break;
case DW_TAG_subprogram:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
read_subroutine_type (die, objfile);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
read_func_scope (die, objfile);
break;
case DW_TAG_inlined_subroutine:
/* FIXME: These are ignored for now.
They could be used to set breakpoints on all inlined instances
of a function and make GDB `next' properly over inlined functions. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_lexical_block:
read_lexical_block_scope (die, objfile);
break;
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
read_structure_scope (die, objfile);
break;
case DW_TAG_enumeration_type:
read_enumeration (die, objfile);
break;
case DW_TAG_subroutine_type:
read_subroutine_type (die, objfile);
break;
case DW_TAG_array_type:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
read_array_type (die, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_pointer_type:
read_tag_pointer_type (die, objfile);
break;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_TAG_ptr_to_member_type:
read_tag_ptr_to_member_type (die, objfile);
break;
case DW_TAG_reference_type:
read_tag_reference_type (die, objfile);
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_TAG_string_type:
read_tag_string_type (die, objfile);
break;
case DW_TAG_base_type:
read_base_type (die, objfile);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (dwarf_attr (die, DW_AT_name))
{
/* Add a typedef symbol for the base type definition. */
new_symbol (die, die->type, objfile);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_common_block:
read_common_block (die, objfile);
break;
case DW_TAG_common_inclusion:
break;
default:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
new_symbol (die, NULL, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
}
}
static void
read_file_scope (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
unsigned int line_offset = 0;
CORE_ADDR lowpc = ((CORE_ADDR) -1);
CORE_ADDR highpc = ((CORE_ADDR) 0);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
struct attribute *attr;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
char *name = "<unknown>";
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
char *comp_dir = NULL;
struct die_info *child_die;
bfd *abfd = objfile->obfd;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
if (die->has_children)
{
child_die = die->next;
while (child_die && child_die->tag)
{
if (child_die->tag == DW_TAG_subprogram)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
CORE_ADDR low, high;
if (dwarf2_get_pc_bounds (child_die, &low, &high, objfile))
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
lowpc = min (lowpc, low);
highpc = max (highpc, high);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
}
child_die = sibling_die (child_die);
}
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* If we didn't find a lowpc, set it to highpc to avoid complaints
from finish_block. */
if (lowpc == ((CORE_ADDR) -1))
lowpc = highpc;
lowpc += baseaddr;
highpc += baseaddr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
attr = dwarf_attr (die, DW_AT_name);
if (attr)
{
name = DW_STRING (attr);
}
attr = dwarf_attr (die, DW_AT_comp_dir);
if (attr)
{
comp_dir = DW_STRING (attr);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (comp_dir)
{
/* Irix 6.2 native cc prepends <machine>.: to the compilation
directory, get rid of it. */
char *cp = strchr (comp_dir, ':');
if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/')
comp_dir = cp + 1;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
if (objfile->ei.entry_point >= lowpc &&
objfile->ei.entry_point < highpc)
{
objfile->ei.entry_file_lowpc = lowpc;
objfile->ei.entry_file_highpc = highpc;
}
attr = dwarf_attr (die, DW_AT_language);
if (attr)
{
set_cu_language (DW_UNSND (attr));
}
* config/sparc/tm-sp64.h (CALL_DUMMY): Store and retrieve %o0-%o5 as 64-bit values; compensate for stack bias. (USE_STRUCT_CONVENTION): We only pass pointers to structs if they're larger than 32 bytes. (REG_STRUCT_HAS_ADDR): Ditto. * sparc-tdep.c (sparc_init_extra_frame_info): Use read_sp() instead of read_register. If the target is a sparc64 and the frame pointer is odd, compensate for the stack bias. (get_saved_register): Use read_sp(). (DUMMY_STACK_REG_BUF_SIZE): Use FP_REGISTER_BYTES. (sparc_push_dummy_frame): Use read_sp()/write_sp(). On sparc64, save the PC, NPC, CCR, FSR, FPRS, Y and ASI registers. (sparc_frame_find_saved_regs): Use read_sp(). Read the PC, NPC, CCR, FSR, FPRS, Y and ASI registers from the frame, if it's a dummy frame. (sparc_pop_frame): Use write_sp(). If the target is a sparc64 and the FP is odd, compensate for stack bias. (sparc_store_return_value): Right-justify the return value before writing it to %o0. (sparc_fix_call_dummy): Don't NOP out part of the call dummy on sparc64. (sparc64_read_sp, sparc64_read_fp, sparc64_write_sp, sparc64_write_fp, sp64_push_arguments, sparc64_extract_return_value): New functions to support the sparc64 ABI. * dwarfread.c (handle_producer): Set processing_gcc_compilation to the right version number. * dwarf2read.c (read_file_scope): Assume we're processing GCC2 output.
1998-05-08 13:30:24 +08:00
/* We assume that we're processing GCC output. */
processing_gcc_compilation = 2;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#if 0
/* FIXME:Do something here. */
if (dip->at_producer != NULL)
{
handle_producer (dip->at_producer);
}
#endif
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* The compilation unit may be in a different language or objfile,
zero out all remembered fundamental types. */
memset (ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
start_symtab (name, comp_dir, lowpc);
* buildsym.h (struct subfile): Add debugformat member. (record_debugformat): Declare global function. * buildsym.c (start_subfile): Initialize debugformat member to NULL. (record_debugformat): New function to record the format. (end_symtab): Copy format into symtab debugformat member. (end_symtab): Free subfile debugformat member. * symmisc.c (free_symtab): Free debugformat when freeing symtab. * symfile.c (allocate_symtab): Initialize the new debugformat member for new symtabs. * symtab.h (struct symtab): Add debugformat member. * source.c (source_info): Print the debug format. * os9kread.c (os9k_process_one_symbol): Call record_debugformat with "OS9". * hpread.c (hpread_expand_symtab): Call record_debugformat with "HP". (hpread_process_one_debug_symbol): Ditto. * dbxread.c (process_one_symbol): Call record_debugformat with "stabs". * coffread.c (coff_start_symtab): Call record_debugformat with "COFF". * xcoffread.c (read_xcoff_symtab): Call record_debugformat with "XCOFF". * dwarfread.c (read_file_scope): Call record_debugformat with "DWARF 1". * dwarf2read.c (read_file_scope): Call record_debugformat with "DWARF 2". * dstread.c (dst_end_symtab): Set debugformat to be "Apollo DST". * mdebugread.c (new_symtab): Set debugformat to be "ECOFF".
1997-06-28 14:10:06 +08:00
record_debugformat ("DWARF 2");
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Decode line number information if present. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
attr = dwarf_attr (die, DW_AT_stmt_list);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (attr)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
line_offset = DW_UNSND (attr);
dwarf_decode_lines (line_offset, comp_dir, abfd);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
/* Process all dies in compilation unit. */
if (die->has_children)
{
child_die = die->next;
while (child_die && child_die->tag)
{
process_die (child_die, objfile);
child_die = sibling_die (child_die);
}
}
}
static void
read_func_scope (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
register struct context_stack *new;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
CORE_ADDR lowpc;
CORE_ADDR highpc;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *child_die;
struct attribute *attr;
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
char *name;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
name = dwarf2_linkage_name (die);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Ignore functions with missing or empty names and functions with
missing or invalid low and high pc attributes. */
if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
return;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
lowpc += baseaddr;
highpc += baseaddr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
if (objfile->ei.entry_point >= lowpc &&
objfile->ei.entry_point < highpc)
{
objfile->ei.entry_func_lowpc = lowpc;
objfile->ei.entry_func_highpc = highpc;
}
if (STREQ (name, "main")) /* FIXME: hardwired name */
{
objfile->ei.main_func_lowpc = lowpc;
objfile->ei.main_func_highpc = highpc;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Decode DW_AT_frame_base location descriptor if present, keep result
for DW_OP_fbreg operands in decode_locdesc. */
frame_base_reg = -1;
frame_base_offset = 0;
attr = dwarf_attr (die, DW_AT_frame_base);
if (attr)
{
CORE_ADDR addr = decode_locdesc (DW_BLOCK (attr), objfile);
if (isreg)
frame_base_reg = addr;
else if (offreg)
{
frame_base_reg = basereg;
frame_base_offset = addr;
}
else
complain (&dwarf2_unsupported_at_frame_base, name);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
new = push_context (0, lowpc);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
new->name = new_symbol (die, die->type, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
list_in_scope = &local_symbols;
if (die->has_children)
{
child_die = die->next;
while (child_die && child_die->tag)
{
process_die (child_die, objfile);
child_die = sibling_die (child_die);
}
}
new = pop_context ();
/* Make a block for the local symbols within. */
finish_block (new->name, &local_symbols, new->old_blocks,
lowpc, highpc, objfile);
list_in_scope = &file_symbols;
}
/* Process all the DIES contained within a lexical block scope. Start
a new scope, process the dies, and then close the scope. */
static void
read_lexical_block_scope (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
register struct context_stack *new;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
CORE_ADDR lowpc, highpc;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *child_die;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Ignore blocks with missing or invalid low and high pc attributes. */
if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
return;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
lowpc += baseaddr;
highpc += baseaddr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
push_context (0, lowpc);
if (die->has_children)
{
child_die = die->next;
while (child_die && child_die->tag)
{
process_die (child_die, objfile);
child_die = sibling_die (child_die);
}
}
new = pop_context ();
if (local_symbols != NULL)
{
finish_block (0, &local_symbols, new->old_blocks, new->start_addr,
highpc, objfile);
}
local_symbols = new->locals;
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Get low and high pc attributes from a die.
Return 1 if the attributes are present and valid, otherwise, return 0. */
static int
dwarf2_get_pc_bounds (die, lowpc, highpc, objfile)
struct die_info *die;
CORE_ADDR *lowpc;
CORE_ADDR *highpc;
struct objfile *objfile;
{
struct attribute *attr;
CORE_ADDR low;
CORE_ADDR high;
attr = dwarf_attr (die, DW_AT_low_pc);
if (attr)
low = DW_ADDR (attr);
else
return 0;
attr = dwarf_attr (die, DW_AT_high_pc);
if (attr)
high = DW_ADDR (attr);
else
return 0;
if (high < low)
return 0;
/* When using the GNU linker, .gnu.linkonce. sections are used to
eliminate duplicate copies of functions and vtables and such.
The linker will arbitrarily choose one and discard the others.
The AT_*_pc values for such functions refer to local labels in
these sections. If the section from that file was discarded, the
labels are not in the output, so the relocs get a value of 0.
If this is a discarded function, mark the pc bounds as invalid,
so that GDB will ignore it. */
if (low == 0 && (bfd_get_file_flags (objfile->obfd) & HAS_RELOC) == 0)
return 0;
*lowpc = low;
*highpc = high;
return 1;
}
/* Add an aggregate field to the field list. */
static void
dwarf2_add_field (fip, die, objfile)
struct field_info *fip;
struct die_info *die;
struct objfile *objfile;
{
struct nextfield *new_field;
struct attribute *attr;
struct field *fp;
char *fieldname = "";
/* Allocate a new field list entry and link it in. */
new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield));
make_cleanup (free, new_field);
memset (new_field, 0, sizeof (struct nextfield));
new_field->next = fip->fields;
fip->fields = new_field;
fip->nfields++;
/* Handle accessibility and virtuality of field.
The default accessibility for members is public, the default
accessibility for inheritance is private. */
if (die->tag != DW_TAG_inheritance)
new_field->accessibility = DW_ACCESS_public;
else
new_field->accessibility = DW_ACCESS_private;
new_field->virtuality = DW_VIRTUALITY_none;
attr = dwarf_attr (die, DW_AT_accessibility);
if (attr)
new_field->accessibility = DW_UNSND (attr);
if (new_field->accessibility != DW_ACCESS_public)
fip->non_public_fields = 1;
attr = dwarf_attr (die, DW_AT_virtuality);
if (attr)
new_field->virtuality = DW_UNSND (attr);
fp = &new_field->field;
if (die->tag == DW_TAG_member)
{
/* Get type of field. */
fp->type = die_type (die, objfile);
/* Get bit size of field (zero if none). */
attr = dwarf_attr (die, DW_AT_bit_size);
if (attr)
{
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_BITSIZE (*fp) = DW_UNSND (attr);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
}
else
{
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_BITSIZE (*fp) = 0;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
}
/* Get bit offset of field. */
attr = dwarf_attr (die, DW_AT_data_member_location);
if (attr)
{
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_BITPOS (*fp) =
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
decode_locdesc (DW_BLOCK (attr), objfile) * bits_per_byte;
}
else
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_BITPOS (*fp) = 0;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
attr = dwarf_attr (die, DW_AT_bit_offset);
if (attr)
{
if (BITS_BIG_ENDIAN)
{
/* For big endian bits, the DW_AT_bit_offset gives the
additional bit offset from the MSB of the containing
anonymous object to the MSB of the field. We don't
have to do anything special since we don't need to
know the size of the anonymous object. */
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_BITPOS (*fp) += DW_UNSND (attr);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
}
else
{
/* For little endian bits, compute the bit offset to the
MSB of the anonymous object, subtract off the number of
bits from the MSB of the field to the MSB of the
object, and then subtract off the number of bits of
the field itself. The result is the bit offset of
the LSB of the field. */
int anonymous_size;
int bit_offset = DW_UNSND (attr);
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
/* The size of the anonymous object containing
the bit field is explicit, so use the
indicated size (in bytes). */
anonymous_size = DW_UNSND (attr);
}
else
{
/* The size of the anonymous object containing
the bit field must be inferred from the type
attribute of the data member containing the
bit field. */
anonymous_size = TYPE_LENGTH (fp->type);
}
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte
- bit_offset - FIELD_BITSIZE (*fp);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
}
}
/* Get name of field. */
attr = dwarf_attr (die, DW_AT_name);
if (attr && DW_STRING (attr))
fieldname = DW_STRING (attr);
fp->name = obsavestring (fieldname, strlen (fieldname),
&objfile->type_obstack);
/* Change accessibility for artificial fields (e.g. virtual table
pointer or virtual base class pointer) to private. */
if (dwarf_attr (die, DW_AT_artificial))
{
new_field->accessibility = DW_ACCESS_private;
fip->non_public_fields = 1;
}
}
else if (die->tag == DW_TAG_variable)
{
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
char *physname;
char *cp;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* C++ static member.
Get physical name, extract field name from physical name. */
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
physname = dwarf2_linkage_name (die);
if (physname == NULL)
return;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
cp = physname;
while (*cp && !is_cplus_marker (*cp))
cp++;
if (*cp)
fieldname = cp + 1;
if (*fieldname == '\0')
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
{
complain (&dwarf2_bad_static_member_name, physname);
}
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
SET_FIELD_PHYSNAME (*fp, obsavestring (physname, strlen (physname),
&objfile->type_obstack));
FIELD_TYPE (*fp) = die_type (die, objfile);
FIELD_NAME (*fp) = obsavestring (fieldname, strlen (fieldname),
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
&objfile->type_obstack);
}
else if (die->tag == DW_TAG_inheritance)
{
/* C++ base class field. */
attr = dwarf_attr (die, DW_AT_data_member_location);
if (attr)
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_BITPOS (*fp) = decode_locdesc (DW_BLOCK (attr), objfile) * bits_per_byte;
FIELD_BITSIZE (*fp) = 0;
FIELD_TYPE (*fp) = die_type (die, objfile);
FIELD_NAME (*fp) = type_name_no_tag (fp->type);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
fip->nbaseclasses++;
}
}
/* Create the vector of fields, and attach it to the type. */
static void
dwarf2_attach_fields_to_type (fip, type, objfile)
struct field_info *fip;
struct type *type;
struct objfile *objfile;
{
int nfields = fip->nfields;
/* Record the field count, allocate space for the array of fields,
and create blank accessibility bitfields if necessary. */
TYPE_NFIELDS (type) = nfields;
TYPE_FIELDS (type) = (struct field *)
TYPE_ALLOC (type, sizeof (struct field) * nfields);
memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
if (fip->non_public_fields)
{
ALLOCATE_CPLUS_STRUCT_TYPE (type);
TYPE_FIELD_PRIVATE_BITS (type) =
(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
TYPE_FIELD_PROTECTED_BITS (type) =
(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
TYPE_FIELD_IGNORE_BITS (type) =
(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
}
/* If the type has baseclasses, allocate and clear a bit vector for
TYPE_FIELD_VIRTUAL_BITS. */
if (fip->nbaseclasses)
{
int num_bytes = B_BYTES (fip->nbaseclasses);
char *pointer;
ALLOCATE_CPLUS_STRUCT_TYPE (type);
pointer = (char *) TYPE_ALLOC (type, num_bytes);
TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses);
TYPE_N_BASECLASSES (type) = fip->nbaseclasses;
}
/* Copy the saved-up fields into the field vector. Start from the head
of the list, adding to the tail of the field array, so that they end
up in the same order in the array in which they were added to the list. */
while (nfields-- > 0)
{
TYPE_FIELD (type, nfields) = fip->fields->field;
switch (fip->fields->accessibility)
{
case DW_ACCESS_private:
SET_TYPE_FIELD_PRIVATE (type, nfields);
break;
case DW_ACCESS_protected:
SET_TYPE_FIELD_PROTECTED (type, nfields);
break;
case DW_ACCESS_public:
break;
default:
/* Unknown accessibility. Complain and treat it as public. */
{
complain (&dwarf2_unsupported_accessibility,
fip->fields->accessibility);
}
break;
}
if (nfields < fip->nbaseclasses)
{
switch (fip->fields->virtuality)
{
case DW_VIRTUALITY_virtual:
case DW_VIRTUALITY_pure_virtual:
SET_TYPE_FIELD_VIRTUAL (type, nfields);
break;
}
}
fip->fields = fip->fields->next;
}
}
/* Skip to the end of a member function name in a mangled name. */
static char *
skip_member_fn_name (physname)
char *physname;
{
char *endname = physname;
/* Skip over leading underscores. */
while (*endname == '_')
endname++;
/* Find two succesive underscores. */
do
endname = strchr (endname, '_');
while (endname != NULL && *++endname != '_');
if (endname == NULL)
{
complain (&dwarf2_bad_member_name_complaint, physname);
endname = physname;
}
else
{
/* Take care of trailing underscores. */
if (endname[1] != '_')
endname--;
}
return endname;
}
/* Add a member function to the proper fieldlist. */
static void
dwarf2_add_member_fn (fip, die, type, objfile)
struct field_info *fip;
struct die_info *die;
struct type *type;
struct objfile *objfile;
{
struct attribute *attr;
struct fnfieldlist *flp;
int i;
struct fn_field *fnp;
char *fieldname;
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
char *physname;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
struct nextfnfield *new_fnfield;
/* Extract member function name from mangled name. */
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
physname = dwarf2_linkage_name (die);
if (physname == NULL)
return;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if ((physname[0] == '_' && physname[1] == '_'
&& strchr ("0123456789Qt", physname[2]))
|| DESTRUCTOR_PREFIX_P (physname))
{
/* Constructor and destructor field names are set to the name
of the class, but without template parameter lists.
The name might be missing for anonymous aggregates. */
if (TYPE_TAG_NAME (type))
{
char *p = strchr (TYPE_TAG_NAME (type), '<');
if (p == NULL)
fieldname = TYPE_TAG_NAME (type);
else
fieldname = obsavestring (TYPE_TAG_NAME (type),
p - TYPE_TAG_NAME (type),
&objfile->type_obstack);
}
else
{
char *anon_name = "";
fieldname = obsavestring (anon_name, strlen (anon_name),
&objfile->type_obstack);
}
}
else
{
char *endname = skip_member_fn_name (physname);
/* Ignore member function if we were unable not extract the member
function name. */
if (endname == physname)
return;
fieldname = obsavestring (physname, endname - physname,
&objfile->type_obstack);
}
/* Look up member function name in fieldlist. */
for (i = 0; i < fip->nfnfields; i++)
{
if (STREQ (fip->fnfieldlists[i].name, fieldname))
break;
}
/* Create new list element if necessary. */
if (i < fip->nfnfields)
flp = &fip->fnfieldlists[i];
else
{
if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0)
{
fip->fnfieldlists = (struct fnfieldlist *)
xrealloc (fip->fnfieldlists,
(fip->nfnfields + DW_FIELD_ALLOC_CHUNK)
* sizeof (struct fnfieldlist));
if (fip->nfnfields == 0)
make_cleanup (free_current_contents, &fip->fnfieldlists);
}
flp = &fip->fnfieldlists[fip->nfnfields];
flp->name = fieldname;
flp->length = 0;
flp->head = NULL;
fip->nfnfields++;
}
/* Create a new member function field and chain it to the field list
entry. */
new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield));
make_cleanup (free, new_fnfield);
memset (new_fnfield, 0, sizeof (struct nextfnfield));
new_fnfield->next = flp->head;
flp->head = new_fnfield;
flp->length++;
/* Fill in the member function field info. */
fnp = &new_fnfield->fnfield;
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
fnp->physname = obsavestring (physname, strlen (physname),
&objfile->type_obstack);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
fnp->type = alloc_type (objfile);
if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC)
{
struct type *return_type = TYPE_TARGET_TYPE (die->type);
struct type **arg_types;
int nparams = TYPE_NFIELDS (die->type);
int iparams;
/* Copy argument types from the subroutine type. */
arg_types = (struct type **)
TYPE_ALLOC (fnp->type, (nparams + 1) * sizeof (struct type *));
for (iparams = 0; iparams < nparams; iparams++)
arg_types[iparams] = TYPE_FIELD_TYPE (die->type, iparams);
/* Set last entry in argument type vector. */
if (TYPE_FLAGS (die->type) & TYPE_FLAG_VARARGS)
arg_types[nparams] = NULL;
else
arg_types[nparams] = dwarf2_fundamental_type (objfile, FT_VOID);
smash_to_method_type (fnp->type, type, return_type, arg_types);
/* Handle static member functions.
Dwarf2 has no clean way to discern C++ static and non-static
member functions. G++ helps GDB by marking the first
parameter for non-static member functions (which is the
this pointer) as artificial. We obtain this information
from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */
if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0)
fnp->voffset = VOFFSET_STATIC;
}
else
complain (&dwarf2_missing_member_fn_type_complaint, physname);
/* Get fcontext from DW_AT_containing_type if present. */
if (dwarf_attr (die, DW_AT_containing_type) != NULL)
fnp->fcontext = die_containing_type (die, objfile);
/* dwarf2 doesn't have stubbed physical names, so the setting of is_const
and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */
/* Get accessibility. */
attr = dwarf_attr (die, DW_AT_accessibility);
if (attr)
{
switch (DW_UNSND (attr))
{
case DW_ACCESS_private:
fnp->is_private = 1;
break;
case DW_ACCESS_protected:
fnp->is_protected = 1;
break;
}
}
/* Get index in virtual function table if it is a virtual member function. */
attr = dwarf_attr (die, DW_AT_vtable_elem_location);
if (attr)
fnp->voffset = decode_locdesc (DW_BLOCK (attr), objfile) + 2;
}
/* Create the vector of member function fields, and attach it to the type. */
static void
dwarf2_attach_fn_fields_to_type (fip, type, objfile)
struct field_info *fip;
struct type *type;
struct objfile *objfile;
{
struct fnfieldlist *flp;
int total_length = 0;
int i;
ALLOCATE_CPLUS_STRUCT_TYPE (type);
TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields);
for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++)
{
struct nextfnfield *nfp = flp->head;
struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i);
int k;
TYPE_FN_FIELDLIST_NAME (type, i) = flp->name;
TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length;
fn_flp->fn_fields = (struct fn_field *)
TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length);
for (k = flp->length; (k--, nfp); nfp = nfp->next)
fn_flp->fn_fields[k] = nfp->fnfield;
total_length += flp->length;
}
TYPE_NFN_FIELDS (type) = fip->nfnfields;
TYPE_NFN_FIELDS_TOTAL (type) = total_length;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Called when we find the DIE that starts a structure or union scope
(definition) to process all dies that define the members of the
structure or union.
NOTE: we need to call struct_type regardless of whether or not the
DIE has an at_name attribute, since it might be an anonymous
structure or union. This gets the type entered into our set of
user defined types.
However, if the structure is incomplete (an opaque struct/union)
then suppress creating a symbol table entry for it since gdb only
wants to find the one with the complete definition. Note that if
it is complete, we just call new_symbol, which does it's own
checking about whether the struct/union is anonymous or not (and
suppresses creating a symbol table entry itself). */
static void
read_structure_scope (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct type *type;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct attribute *attr;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
type = alloc_type (objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
INIT_CPLUS_SPECIFIC (type);
attr = dwarf_attr (die, DW_AT_name);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (attr && DW_STRING (attr))
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
{
TYPE_TAG_NAME (type) = obsavestring (DW_STRING (attr),
strlen (DW_STRING (attr)),
&objfile->type_obstack);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
if (die->tag == DW_TAG_structure_type)
{
TYPE_CODE (type) = TYPE_CODE_STRUCT;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
else if (die->tag == DW_TAG_union_type)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
TYPE_CODE (type) = TYPE_CODE_UNION;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
}
else
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT
in gdbtypes.h. */
TYPE_CODE (type) = TYPE_CODE_CLASS;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
TYPE_LENGTH (type) = DW_UNSND (attr);
}
else
{
TYPE_LENGTH (type) = 0;
}
/* We need to add the type field to the die immediately so we don't
infinitely recurse when dealing with pointers to the structure
type within the structure itself. */
die->type = type;
if (die->has_children)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
struct field_info fi;
struct die_info *child_die;
struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
memset (&fi, 0, sizeof (struct field_info));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
child_die = die->next;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
while (child_die && child_die->tag)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (child_die->tag == DW_TAG_member)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
dwarf2_add_field (&fi, child_die, objfile);
}
else if (child_die->tag == DW_TAG_variable)
{
/* C++ static member. */
dwarf2_add_field (&fi, child_die, objfile);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
}
else if (child_die->tag == DW_TAG_subprogram)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* C++ member function. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
process_die (child_die, objfile);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
dwarf2_add_member_fn (&fi, child_die, type, objfile);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
}
else if (child_die->tag == DW_TAG_inheritance)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* C++ base class field. */
dwarf2_add_field (&fi, child_die, objfile);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
}
else
{
process_die (child_die, objfile);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
child_die = sibling_die (child_die);
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Attach fields and member functions to the type. */
if (fi.nfields)
dwarf2_attach_fields_to_type (&fi, type, objfile);
if (fi.nfnfields)
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
dwarf2_attach_fn_fields_to_type (&fi, type, objfile);
/* Get the type which refers to the base class (possibly this
class itself) which contains the vtable pointer for the current
class from the DW_AT_containing_type attribute. */
if (dwarf_attr (die, DW_AT_containing_type) != NULL)
{
struct type *t = die_containing_type (die, objfile);
TYPE_VPTR_BASETYPE (type) = t;
if (type == t)
{
static const char vptr_name[] = { '_','v','p','t','r','\0' };
int i;
/* Our own class provides vtbl ptr. */
for (i = TYPE_NFIELDS (t) - 1;
i >= TYPE_N_BASECLASSES (t);
--i)
{
char *fieldname = TYPE_FIELD_NAME (t, i);
if (STREQN (fieldname, vptr_name, strlen (vptr_name) - 1)
&& is_cplus_marker (fieldname[strlen (vptr_name)]))
{
TYPE_VPTR_FIELDNO (type) = i;
break;
}
}
/* Complain if virtual function table field not found. */
if (i < TYPE_N_BASECLASSES (t))
complain (&dwarf2_vtbl_not_found_complaint,
TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "");
}
else
{
TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
new_symbol (die, type, objfile);
do_cleanups (back_to);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
else
{
/* No children, must be stub. */
TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
}
die->type = type;
}
/* Given a pointer to a die which begins an enumeration, process all
the dies that define the members of the enumeration.
This will be much nicer in draft 6 of the DWARF spec when our
members will be dies instead squished into the DW_AT_element_list
attribute.
NOTE: We reverse the order of the element list. */
static void
read_enumeration (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct die_info *child_die;
struct type *type;
struct field *fields;
struct attribute *attr;
struct symbol *sym;
int num_fields;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
int unsigned_enum = 1;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
type = alloc_type (objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
TYPE_CODE (type) = TYPE_CODE_ENUM;
attr = dwarf_attr (die, DW_AT_name);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (attr && DW_STRING (attr))
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
TYPE_TAG_NAME (type) = obsavestring (DW_STRING (attr),
strlen (DW_STRING (attr)),
&objfile->type_obstack);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
TYPE_LENGTH (type) = DW_UNSND (attr);
}
else
{
TYPE_LENGTH (type) = 0;
}
num_fields = 0;
fields = NULL;
if (die->has_children)
{
child_die = die->next;
while (child_die && child_die->tag)
{
if (child_die->tag != DW_TAG_enumerator)
{
process_die (child_die, objfile);
}
else
{
attr = dwarf_attr (child_die, DW_AT_name);
if (attr)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
sym = new_symbol (child_die, type, objfile);
if (SYMBOL_VALUE (sym) < 0)
unsigned_enum = 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0)
{
fields = (struct field *)
xrealloc (fields,
(num_fields + DW_FIELD_ALLOC_CHUNK)
* sizeof (struct field));
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* gdbtypes.h: Re-interpret struct field. Suppport address of static. Add a bunch of macros. * coffread.c, dwarf2read.c, dwarfread.c, mdebugread.c, stabsread.c: Update to use new macros. * coffread.c, hpread.c, stabsread.c: Remove bugus TYPE_FIELD_VALUE. * value.h, values.c (value_static_field): New function. * cp-valprint.c, valops.c: Modify to use value_static_field.
1997-08-06 05:58:57 +08:00
FIELD_NAME (fields[num_fields]) = SYMBOL_NAME (sym);
FIELD_TYPE (fields[num_fields]) = NULL;
FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym);
FIELD_BITSIZE (fields[num_fields]) = 0;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
num_fields++;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
child_die = sibling_die (child_die);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (num_fields)
{
TYPE_NFIELDS (type) = num_fields;
TYPE_FIELDS (type) = (struct field *)
TYPE_ALLOC (type, sizeof (struct field) * num_fields);
memcpy (TYPE_FIELDS (type), fields,
sizeof (struct field) * num_fields);
free (fields);
}
if (unsigned_enum)
TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
die->type = type;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
new_symbol (die, type, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
/* Extract all information from a DW_TAG_array_type DIE and put it in
the DIE's type field. For now, this only handles one dimensional
arrays. */
static void
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
read_array_type (die, objfile)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *die;
struct objfile *objfile;
{
struct die_info *child_die;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct type *type = NULL;
struct type *element_type, *range_type, *index_type;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
struct type **range_types = NULL;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct attribute *attr;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
int ndim = 0;
struct cleanup *back_to;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Return if we've already decoded this type. */
if (die->type)
{
return;
}
element_type = die_type (die, objfile);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Irix 6.2 native cc creates array types without children for
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
arrays with unspecified length. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (die->has_children == 0)
{
index_type = dwarf2_fundamental_type (objfile, FT_INTEGER);
range_type = create_range_type (NULL, index_type, 0, -1);
die->type = create_array_type (NULL, element_type, range_type);
return;
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
back_to = make_cleanup (null_cleanup, NULL);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
child_die = die->next;
while (child_die && child_die->tag)
{
if (child_die->tag == DW_TAG_subrange_type)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
unsigned int low, high;
/* Default bounds to an array with unspecified length. */
low = 0;
high = -1;
Suggested by Chris Walter <walter@budoe.bu.edu>: * dwarfread.c (set_cu_language): Recognize Fortran. * dwarf2read.c (set_cu_language): Ditto. (read_array_type): Fix language test.
1998-01-29 07:02:03 +08:00
if (cu_language == language_fortran)
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
{
/* FORTRAN implies a lower bound of 1, if not given. */
low = 1;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
index_type = die_type (child_die, objfile);
attr = dwarf_attr (child_die, DW_AT_lower_bound);
if (attr)
{
if (attr->form == DW_FORM_sdata)
{
low = DW_SND (attr);
}
else if (attr->form == DW_FORM_udata
|| attr->form == DW_FORM_data1
|| attr->form == DW_FORM_data2
|| attr->form == DW_FORM_data4)
{
low = DW_UNSND (attr);
}
else
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
complain (&dwarf2_non_const_array_bound_ignored,
dwarf_form_name (attr->form));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#ifdef FORTRAN_HACK
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
die->type = lookup_pointer_type (element_type);
return;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#else
low = 0;
#endif
}
}
attr = dwarf_attr (child_die, DW_AT_upper_bound);
if (attr)
{
if (attr->form == DW_FORM_sdata)
{
high = DW_SND (attr);
}
else if (attr->form == DW_FORM_udata
|| attr->form == DW_FORM_data1
|| attr->form == DW_FORM_data2
|| attr->form == DW_FORM_data4)
{
high = DW_UNSND (attr);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
else if (attr->form == DW_FORM_block1)
{
/* GCC encodes arrays with unspecified or dynamic length
with a DW_FORM_block1 attribute.
FIXME: GDB does not yet know how to handle dynamic
arrays properly, treat them as arrays with unspecified
length for now. */
high = -1;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
else
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
complain (&dwarf2_non_const_array_bound_ignored,
dwarf_form_name (attr->form));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#ifdef FORTRAN_HACK
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
die->type = lookup_pointer_type (element_type);
return;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#else
high = 1;
#endif
}
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Create a range type and save it for array type creation. */
if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0)
{
range_types = (struct type **)
xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK)
* sizeof (struct type *));
if (ndim == 0)
make_cleanup (free_current_contents, &range_types);
}
range_types[ndim++] = create_range_type (NULL, index_type, low, high);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
child_die = sibling_die (child_die);
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Dwarf2 dimensions are output from left to right, create the
necessary array types in backwards order. */
type = element_type;
while (ndim-- > 0)
type = create_array_type (NULL, type, range_types[ndim]);
do_cleanups (back_to);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Install the type in the die. */
die->type = type;
}
/* First cut: install each common block member as a global variable. */
static void
read_common_block (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct die_info *child_die;
struct attribute *attr;
struct symbol *sym;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
CORE_ADDR base = (CORE_ADDR) 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
attr = dwarf_attr (die, DW_AT_location);
if (attr)
{
base = decode_locdesc (DW_BLOCK (attr), objfile);
}
if (die->has_children)
{
child_die = die->next;
while (child_die && child_die->tag)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
sym = new_symbol (child_die, NULL, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
attr = dwarf_attr (child_die, DW_AT_data_member_location);
if (attr)
{
SYMBOL_VALUE_ADDRESS (sym) =
base + decode_locdesc (DW_BLOCK (attr), objfile);
add_symbol_to_list (sym, &global_symbols);
}
child_die = sibling_die (child_die);
}
}
}
/* Extract all information from a DW_TAG_pointer_type DIE and add to
the user defined type vector. */
static void
read_tag_pointer_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct type *type;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct attribute *attr;
if (die->type)
{
return;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
type = lookup_pointer_type (die_type (die, objfile));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
TYPE_LENGTH (type) = DW_UNSND (attr);
}
else
{
TYPE_LENGTH (type) = address_size;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
die->type = type;
}
/* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to
the user defined type vector. */
static void
read_tag_ptr_to_member_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct type *type;
struct type *to_type;
struct type *domain;
if (die->type)
{
return;
}
type = alloc_type (objfile);
to_type = die_type (die, objfile);
domain = die_containing_type (die, objfile);
smash_to_member_type (type, domain, to_type);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
die->type = type;
}
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
/* Extract all information from a DW_TAG_reference_type DIE and add to
the user defined type vector. */
static void
read_tag_reference_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct type *type;
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
struct attribute *attr;
if (die->type)
{
return;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
type = lookup_reference_type (die_type (die, objfile));
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
TYPE_LENGTH (type) = DW_UNSND (attr);
}
else
{
TYPE_LENGTH (type) = address_size;
}
die->type = type;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static void
read_tag_const_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
if (die->type)
{
return;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
complain (&dwarf2_const_ignored);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
die->type = die_type (die, objfile);
}
static void
read_tag_volatile_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
if (die->type)
{
return;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
complain (&dwarf2_volatile_ignored);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
die->type = die_type (die, objfile);
}
/* Extract all information from a DW_TAG_string_type DIE and add to
the user defined type vector. It isn't really a user defined type,
but it behaves like one, with other DIE's using an AT_user_def_type
attribute to reference it. */
static void
read_tag_string_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct type *type, *range_type, *index_type, *char_type;
struct attribute *attr;
unsigned int length;
if (die->type)
{
return;
}
attr = dwarf_attr (die, DW_AT_string_length);
if (attr)
{
length = DW_UNSND (attr);
}
else
{
length = 1;
}
index_type = dwarf2_fundamental_type (objfile, FT_INTEGER);
range_type = create_range_type (NULL, index_type, 1, length);
char_type = dwarf2_fundamental_type (objfile, FT_CHAR);
type = create_string_type (char_type, range_type);
die->type = type;
}
/* Handle DIES due to C code like:
struct foo
{
int (*funcp)(int a, long l);
int b;
};
('funcp' generates a DW_TAG_subroutine_type DIE)
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
*/
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static void
read_subroutine_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct type *type; /* Type that this function returns */
struct type *ftype; /* Function that returns above type */
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
struct attribute *attr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Decode the type that this subroutine returns */
if (die->type)
{
return;
}
type = die_type (die, objfile);
ftype = lookup_function_type (type);
* dwarf2read.c (read_subroutine_type): Set TYPE_FLAG_PROTOTYPED on C++ functions. * valops.c (value_arg_coerce): Add new argument to indicate whether the function has a prototype, handle integer and float promotions accordingly. (call_function_by_hand): Always call value_arg_coerce, pass down prototype information.
1998-05-23 17:31:41 +08:00
/* All functions in C++ have prototypes. */
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
attr = dwarf_attr (die, DW_AT_prototyped);
* dwarf2read.c (read_subroutine_type): Set TYPE_FLAG_PROTOTYPED on C++ functions. * valops.c (value_arg_coerce): Add new argument to indicate whether the function has a prototype, handle integer and float promotions accordingly. (call_function_by_hand): Always call value_arg_coerce, pass down prototype information.
1998-05-23 17:31:41 +08:00
if ((attr && (DW_UNSND (attr) != 0))
|| cu_language == language_cplus)
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (die->has_children)
{
struct die_info *child_die;
int nparams = 0;
int iparams = 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Count the number of parameters.
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
FIXME: GDB currently ignores vararg functions, but knows about
vararg member functions. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
child_die = die->next;
while (child_die && child_die->tag)
{
if (child_die->tag == DW_TAG_formal_parameter)
nparams++;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
else if (child_die->tag == DW_TAG_unspecified_parameters)
TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
child_die = sibling_die (child_die);
}
/* Allocate storage for parameters and fill them in. */
TYPE_NFIELDS (ftype) = nparams;
TYPE_FIELDS (ftype) = (struct field *)
TYPE_ALLOC (ftype, nparams * sizeof (struct field));
child_die = die->next;
while (child_die && child_die->tag)
{
if (child_die->tag == DW_TAG_formal_parameter)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Dwarf2 has no clean way to discern C++ static and non-static
member functions. G++ helps GDB by marking the first
parameter for non-static member functions (which is the
this pointer) as artificial. We pass this information
to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */
attr = dwarf_attr (child_die, DW_AT_artificial);
if (attr)
TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr);
else
TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, objfile);
iparams++;
}
child_die = sibling_die (child_die);
}
}
die->type = ftype;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
static void
read_typedef (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct type *type;
if (!die->type)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct attribute *attr;
struct type *xtype;
xtype = die_type (die, objfile);
type = alloc_type (objfile);
TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
TYPE_TARGET_TYPE (type) = xtype;
attr = dwarf_attr (die, DW_AT_name);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (attr && DW_STRING (attr))
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
TYPE_NAME (type) = obsavestring (DW_STRING (attr),
strlen (DW_STRING (attr)),
&objfile->type_obstack);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
die->type = type;
}
}
/* Find a representation of a given base type and install
it in the TYPE field of the die. */
static void
read_base_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct type *type;
struct attribute *attr;
int encoding = 0, size = 0;
/* If we've already decoded this die, this is a no-op. */
if (die->type)
{
return;
}
attr = dwarf_attr (die, DW_AT_encoding);
if (attr)
{
encoding = DW_UNSND (attr);
}
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
size = DW_UNSND (attr);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
attr = dwarf_attr (die, DW_AT_name);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (attr && DW_STRING (attr))
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
{
enum type_code code = TYPE_CODE_INT;
int is_unsigned = 0;
switch (encoding)
{
case DW_ATE_address:
/* Turn DW_ATE_address into a void * pointer. */
code = TYPE_CODE_PTR;
is_unsigned = 1;
break;
case DW_ATE_boolean:
code = TYPE_CODE_BOOL;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
is_unsigned = 1;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
break;
case DW_ATE_complex_float:
code = TYPE_CODE_COMPLEX;
break;
case DW_ATE_float:
code = TYPE_CODE_FLT;
break;
case DW_ATE_signed:
case DW_ATE_signed_char:
break;
case DW_ATE_unsigned:
case DW_ATE_unsigned_char:
is_unsigned = 1;
break;
default:
complain (&dwarf2_unsupported_at_encoding,
dwarf_type_encoding_name (encoding));
break;
}
type = init_type (code, size, is_unsigned, DW_STRING (attr), objfile);
if (encoding == DW_ATE_address)
TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID);
}
else
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf_base_type (encoding, size, objfile);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
die->type = type;
}
/* Read a whole compilation unit into a linked list of dies. */
struct die_info *
read_comp_unit (info_ptr, abfd)
char *info_ptr;
bfd *abfd;
{
struct die_info *first_die, *last_die, *die;
char *cur_ptr;
int nesting_level;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Reset die reference table, we are building a new one now. */
dwarf2_empty_die_ref_table ();
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
cur_ptr = info_ptr;
nesting_level = 0;
first_die = last_die = NULL;
do
{
cur_ptr = read_full_die (&die, abfd, cur_ptr);
if (die->has_children)
{
nesting_level++;
}
if (die->tag == 0)
{
nesting_level--;
}
die->next = NULL;
/* Enter die in reference hash table */
store_in_ref_table (die->offset, die);
if (!first_die)
{
first_die = last_die = die;
}
else
{
last_die->next = die;
last_die = die;
}
}
while (nesting_level > 0);
return first_die;
}
/* Free a linked list of dies. */
static void
free_die_list (dies)
struct die_info *dies;
{
struct die_info *die, *next;
die = dies;
while (die)
{
next = die->next;
free (die->attrs);
free (die);
die = next;
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Read the contents of the section at OFFSET and of size SIZE from the
object file specified by OBJFILE into the psymbol_obstack and return it. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static char *
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dwarf2_read_section (objfile, offset, size)
struct objfile *objfile;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
file_ptr offset;
unsigned int size;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
bfd *abfd = objfile->obfd;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
char *buf;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (size == 0)
return NULL;
buf = (char *) obstack_alloc (&objfile->psymbol_obstack, size);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
if ((bfd_seek (abfd, offset, SEEK_SET) != 0) ||
(bfd_read (buf, size, 1, abfd) != size))
{
buf = NULL;
error ("Dwarf Error: Can't read DWARF data from '%s'",
bfd_get_filename (abfd));
}
return buf;
}
/* In DWARF version 2, the description of the debugging information is
stored in a separate .debug_abbrev section. Before we read any
dies from a section we read in all abbreviations and install them
in a hash table. */
static void
dwarf2_read_abbrevs (abfd, offset)
bfd * abfd;
unsigned int offset;
{
char *abbrev_ptr;
struct abbrev_info *cur_abbrev;
unsigned int abbrev_number, bytes_read, abbrev_name;
unsigned int abbrev_form, hash_number;
/* empty the table */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dwarf2_empty_abbrev_table (NULL);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
abbrev_ptr = dwarf_abbrev_buffer + offset;
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
/* loop until we reach an abbrev number of 0 */
while (abbrev_number)
{
cur_abbrev = dwarf_alloc_abbrev ();
/* read in abbrev header */
cur_abbrev->number = abbrev_number;
cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr);
abbrev_ptr += 1;
/* now read in declarations */
abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
while (abbrev_name)
{
if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
cur_abbrev->attrs = (struct attr_abbrev *)
xrealloc (cur_abbrev->attrs,
(cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK)
* sizeof (struct attr_abbrev));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
cur_abbrev->attrs[cur_abbrev->num_attrs].name = abbrev_name;
cur_abbrev->attrs[cur_abbrev->num_attrs++].form = abbrev_form;
abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
}
hash_number = abbrev_number % ABBREV_HASH_SIZE;
cur_abbrev->next = dwarf2_abbrevs[hash_number];
dwarf2_abbrevs[hash_number] = cur_abbrev;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Get next abbreviation.
Under Irix6 the abbreviations for a compilation unit are not
always properly terminated with an abbrev number of 0.
Exit loop if we encounter an abbreviation which we have
already read (which means we are about to read the abbreviations
for the next compile unit) or if the end of the abbreviation
table is reached. */
if ((unsigned int) (abbrev_ptr - dwarf_abbrev_buffer)
>= dwarf_abbrev_size)
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (dwarf2_lookup_abbrev (abbrev_number) != NULL)
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
}
/* Empty the abbrev table for a new compilation unit. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* ARGSUSED */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static void
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dwarf2_empty_abbrev_table (ignore)
PTR ignore;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
int i;
struct abbrev_info *abbrev, *next;
for (i = 0; i < ABBREV_HASH_SIZE; ++i)
{
next = NULL;
abbrev = dwarf2_abbrevs[i];
while (abbrev)
{
next = abbrev->next;
free (abbrev->attrs);
free (abbrev);
abbrev = next;
}
dwarf2_abbrevs[i] = NULL;
}
}
/* Lookup an abbrev_info structure in the abbrev hash table. */
static struct abbrev_info *
dwarf2_lookup_abbrev (number)
unsigned int number;
{
unsigned int hash_number;
struct abbrev_info *abbrev;
hash_number = number % ABBREV_HASH_SIZE;
abbrev = dwarf2_abbrevs[hash_number];
while (abbrev)
{
if (abbrev->number == number)
return abbrev;
else
abbrev = abbrev->next;
}
return NULL;
}
/* Read a minimal amount of information into the minimal die structure. */
static char *
read_partial_die (part_die, abfd, info_ptr, has_pc_info)
struct partial_die_info *part_die;
bfd * abfd;
char *info_ptr;
int *has_pc_info;
{
unsigned int abbrev_number, bytes_read, i;
struct abbrev_info *abbrev;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
struct attribute attr;
struct attribute spec_attr;
int found_spec_attr = 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
int has_low_pc_attr = 0;
int has_high_pc_attr = 0;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
*part_die = zeroed_partial_die;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
*has_pc_info = 0;
abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
if (!abbrev_number)
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
return info_ptr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
abbrev = dwarf2_lookup_abbrev (abbrev_number);
if (!abbrev)
{
error ("Dwarf Error: Could not find abbrev number %d.", abbrev_number);
}
part_die->offset = info_ptr - dwarf_info_buffer;
part_die->tag = abbrev->tag;
part_die->has_children = abbrev->has_children;
part_die->abbrev = abbrev_number;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
for (i = 0; i < abbrev->num_attrs; ++i)
{
info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Store the data if it is of an attribute we want to keep in a
partial symbol table. */
switch (attr.name)
{
case DW_AT_name:
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
/* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */
if (part_die->name == NULL)
part_die->name = DW_STRING (&attr);
break;
case DW_AT_MIPS_linkage_name:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
part_die->name = DW_STRING (&attr);
break;
case DW_AT_low_pc:
has_low_pc_attr = 1;
part_die->lowpc = DW_ADDR (&attr);
break;
case DW_AT_high_pc:
has_high_pc_attr = 1;
part_die->highpc = DW_ADDR (&attr);
break;
case DW_AT_location:
part_die->locdesc = DW_BLOCK (&attr);
break;
case DW_AT_language:
part_die->language = DW_UNSND (&attr);
break;
case DW_AT_external:
part_die->is_external = DW_UNSND (&attr);
break;
case DW_AT_declaration:
part_die->is_declaration = DW_UNSND (&attr);
break;
case DW_AT_type:
part_die->has_type = 1;
break;
case DW_AT_abstract_origin:
case DW_AT_specification:
found_spec_attr = 1;
spec_attr = attr;
break;
case DW_AT_sibling:
/* Ignore absolute siblings, they might point outside of
the current compile unit. */
if (attr.form == DW_FORM_ref_addr)
complain(&dwarf2_absolute_sibling_complaint);
else
part_die->sibling =
dwarf_info_buffer + dwarf2_get_ref_die_offset (&attr);
break;
default:
break;
}
}
/* If we found a reference attribute and the die has no name, try
to find a name in the referred to die. */
if (found_spec_attr && part_die->name == NULL)
{
struct partial_die_info spec_die;
char *spec_ptr;
int dummy;
spec_ptr = dwarf_info_buffer + dwarf2_get_ref_die_offset (&spec_attr);
read_partial_die (&spec_die, abfd, spec_ptr, &dummy);
if (spec_die.name)
{
part_die->name = spec_die.name;
/* Copy DW_AT_external attribute if it is set. */
if (spec_die.is_external)
part_die->is_external = spec_die.is_external;
}
}
/* When using the GNU linker, .gnu.linkonce. sections are used to
eliminate duplicate copies of functions and vtables and such.
The linker will arbitrarily choose one and discard the others.
The AT_*_pc values for such functions refer to local labels in
these sections. If the section from that file was discarded, the
labels are not in the output, so the relocs get a value of 0.
If this is a discarded function, mark the pc bounds as invalid,
so that GDB will ignore it. */
if (has_low_pc_attr && has_high_pc_attr
&& part_die->lowpc < part_die->highpc
&& (part_die->lowpc != 0
|| (bfd_get_file_flags (abfd) & HAS_RELOC)))
*has_pc_info = 1;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return info_ptr;
}
/* Read the die from the .debug_info section buffer. And set diep to
point to a newly allocated die with its information. */
static char *
read_full_die (diep, abfd, info_ptr)
struct die_info **diep;
bfd *abfd;
char *info_ptr;
{
unsigned int abbrev_number, bytes_read, i, offset;
struct abbrev_info *abbrev;
struct die_info *die;
offset = info_ptr - dwarf_info_buffer;
abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
if (!abbrev_number)
{
die = dwarf_alloc_die ();
die->tag = 0;
die->abbrev = abbrev_number;
die->type = NULL;
*diep = die;
return info_ptr;
}
abbrev = dwarf2_lookup_abbrev (abbrev_number);
if (!abbrev)
{
error ("Dwarf Error: could not find abbrev number %d.", abbrev_number);
}
die = dwarf_alloc_die ();
die->offset = offset;
die->tag = abbrev->tag;
die->has_children = abbrev->has_children;
die->abbrev = abbrev_number;
die->type = NULL;
die->num_attrs = abbrev->num_attrs;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
die->attrs = (struct attribute *)
xmalloc (die->num_attrs * sizeof (struct attribute));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
for (i = 0; i < abbrev->num_attrs; ++i)
{
info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i],
abfd, info_ptr);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
*diep = die;
return info_ptr;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Read an attribute described by an abbreviated attribute. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
static char *
read_attribute (attr, abbrev, abfd, info_ptr)
struct attribute *attr;
struct attr_abbrev *abbrev;
bfd *abfd;
char *info_ptr;
{
unsigned int bytes_read;
struct dwarf_block *blk;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
attr->name = abbrev->name;
attr->form = abbrev->form;
switch (abbrev->form)
{
case DW_FORM_addr:
case DW_FORM_ref_addr:
DW_ADDR (attr) = read_address (abfd, info_ptr);
info_ptr += address_size;
break;
case DW_FORM_block2:
blk = dwarf_alloc_block ();
blk->size = read_2_bytes (abfd, info_ptr);
info_ptr += 2;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
info_ptr += blk->size;
DW_BLOCK (attr) = blk;
break;
case DW_FORM_block4:
blk = dwarf_alloc_block ();
blk->size = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
info_ptr += blk->size;
DW_BLOCK (attr) = blk;
break;
case DW_FORM_data2:
DW_UNSND (attr) = read_2_bytes (abfd, info_ptr);
info_ptr += 2;
break;
case DW_FORM_data4:
DW_UNSND (attr) = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
break;
case DW_FORM_data8:
DW_UNSND (attr) = read_8_bytes (abfd, info_ptr);
info_ptr += 8;
break;
case DW_FORM_string:
DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
break;
case DW_FORM_block:
blk = dwarf_alloc_block ();
blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
info_ptr += blk->size;
DW_BLOCK (attr) = blk;
break;
case DW_FORM_block1:
blk = dwarf_alloc_block ();
blk->size = read_1_byte (abfd, info_ptr);
info_ptr += 1;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
info_ptr += blk->size;
DW_BLOCK (attr) = blk;
break;
case DW_FORM_data1:
DW_UNSND (attr) = read_1_byte (abfd, info_ptr);
info_ptr += 1;
break;
case DW_FORM_flag:
DW_UNSND (attr) = read_1_byte (abfd, info_ptr);
info_ptr += 1;
break;
case DW_FORM_sdata:
DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
break;
case DW_FORM_udata:
DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
break;
case DW_FORM_ref1:
DW_UNSND (attr) = read_1_byte (abfd, info_ptr);
info_ptr += 1;
break;
case DW_FORM_ref2:
DW_UNSND (attr) = read_2_bytes (abfd, info_ptr);
info_ptr += 2;
break;
case DW_FORM_ref4:
DW_UNSND (attr) = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
break;
case DW_FORM_ref_udata:
DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
break;
case DW_FORM_strp:
case DW_FORM_indirect:
default:
error ("Dwarf Error: Cannot handle %s in DWARF reader.",
dwarf_form_name (abbrev->form));
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return info_ptr;
}
/* read dwarf information from a buffer */
static unsigned int
read_1_byte (abfd, buf)
bfd *abfd;
char *buf;
{
return bfd_get_8 (abfd, (bfd_byte *) buf);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static int
read_1_signed_byte (abfd, buf)
bfd *abfd;
char *buf;
{
return bfd_get_signed_8 (abfd, (bfd_byte *) buf);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static unsigned int
read_2_bytes (abfd, buf)
bfd *abfd;
char *buf;
{
return bfd_get_16 (abfd, (bfd_byte *) buf);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static int
read_2_signed_bytes (abfd, buf)
bfd *abfd;
char *buf;
{
return bfd_get_signed_16 (abfd, (bfd_byte *) buf);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static unsigned int
read_4_bytes (abfd, buf)
bfd *abfd;
char *buf;
{
return bfd_get_32 (abfd, (bfd_byte *) buf);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static int
read_4_signed_bytes (abfd, buf)
bfd *abfd;
char *buf;
{
return bfd_get_signed_32 (abfd, (bfd_byte *) buf);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static unsigned int
read_8_bytes (abfd, buf)
bfd *abfd;
char *buf;
{
return bfd_get_64 (abfd, (bfd_byte *) buf);
}
static CORE_ADDR
read_address (abfd, buf)
bfd *abfd;
char *buf;
{
CORE_ADDR retval = 0;
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
switch (address_size)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
case 4:
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
retval = bfd_get_32 (abfd, (bfd_byte *) buf);
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
break;
case 8:
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
retval = bfd_get_64 (abfd, (bfd_byte *) buf);
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
break;
default:
/* *THE* alternative is 8, right? */
abort ();
}
/* If the address being read is larger than the address that is
applicable for the object file format then mask it down to the
correct size. Take care to avoid unnecessary shift or shift
overflow */
if (address_size > address_significant_size
&& address_significant_size < sizeof (CORE_ADDR))
{
CORE_ADDR mask = ((CORE_ADDR) 0) - 1;
retval &= ~(mask << (address_significant_size * 8));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
return retval;
}
static char *
read_n_bytes (abfd, buf, size)
bfd * abfd;
char *buf;
unsigned int size;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* If the size of a host char is 8 bits, we can return a pointer
to the buffer, otherwise we have to copy the data to a buffer
allocated on the temporary obstack. */
#if HOST_CHAR_BIT == 8
return buf;
#else
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
char *ret;
unsigned int i;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
ret = obstack_alloc (&dwarf2_tmp_obstack, size);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
for (i = 0; i < size; ++i)
{
ret[i] = bfd_get_8 (abfd, (bfd_byte *) buf);
buf++;
}
return ret;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
static char *
read_string (abfd, buf, bytes_read_ptr)
bfd *abfd;
char *buf;
unsigned int *bytes_read_ptr;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* If the size of a host char is 8 bits, we can return a pointer
to the string, otherwise we have to copy the string to a buffer
allocated on the temporary obstack. */
#if HOST_CHAR_BIT == 8
if (*buf == '\0')
{
*bytes_read_ptr = 1;
return NULL;
}
*bytes_read_ptr = strlen (buf) + 1;
return buf;
#else
int byte;
unsigned int i = 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
while ((byte = bfd_get_8 (abfd, (bfd_byte *) buf)) != 0)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
obstack_1grow (&dwarf2_tmp_obstack, byte);
i++;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
buf++;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (i == 0)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
*bytes_read_ptr = 1;
return NULL;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
obstack_1grow (&dwarf2_tmp_obstack, '\0');
*bytes_read_ptr = i + 1;
return obstack_finish (&dwarf2_tmp_obstack);
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
static unsigned int
read_unsigned_leb128 (abfd, buf, bytes_read_ptr)
bfd *abfd;
char *buf;
unsigned int *bytes_read_ptr;
{
unsigned int result, num_read;
int i, shift;
unsigned char byte;
result = 0;
shift = 0;
num_read = 0;
i = 0;
while (1)
{
byte = bfd_get_8 (abfd, (bfd_byte *) buf);
buf++;
num_read++;
result |= ((byte & 127) << shift);
if ((byte & 128) == 0)
{
break;
}
shift += 7;
}
*bytes_read_ptr = num_read;
return result;
}
static int
read_signed_leb128 (abfd, buf, bytes_read_ptr)
bfd *abfd;
char *buf;
unsigned int *bytes_read_ptr;
{
int result;
int i, shift, size, num_read;
unsigned char byte;
result = 0;
shift = 0;
size = 32;
num_read = 0;
i = 0;
while (1)
{
byte = bfd_get_8 (abfd, (bfd_byte *) buf);
buf++;
num_read++;
result |= ((byte & 127) << shift);
shift += 7;
if ((byte & 128) == 0)
{
break;
}
}
if ((shift < size) && (byte & 0x40))
{
result |= -(1 << shift);
}
*bytes_read_ptr = num_read;
return result;
}
static void
set_cu_language (lang)
unsigned int lang;
{
switch (lang)
{
case DW_LANG_C89:
case DW_LANG_C:
cu_language = language_c;
break;
case DW_LANG_C_plus_plus:
cu_language = language_cplus;
break;
Suggested by Chris Walter <walter@budoe.bu.edu>: * dwarfread.c (set_cu_language): Recognize Fortran. * dwarf2read.c (set_cu_language): Ditto. (read_array_type): Fix language test.
1998-01-29 07:02:03 +08:00
case DW_LANG_Fortran77:
case DW_LANG_Fortran90:
cu_language = language_fortran;
break;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_LANG_Mips_Assembler:
cu_language = language_asm;
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_LANG_Ada83:
case DW_LANG_Cobol74:
case DW_LANG_Cobol85:
case DW_LANG_Pascal83:
case DW_LANG_Modula2:
default:
cu_language = language_unknown;
break;
}
cu_language_defn = language_def (cu_language);
}
/* Return the named attribute or NULL if not there. */
static struct attribute *
dwarf_attr (die, name)
struct die_info *die;
unsigned int name;
{
unsigned int i;
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
struct attribute *spec = NULL;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
for (i = 0; i < die->num_attrs; ++i)
{
if (die->attrs[i].name == name)
{
return &die->attrs[i];
}
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
if (die->attrs[i].name == DW_AT_specification
|| die->attrs[i].name == DW_AT_abstract_origin)
spec = &die->attrs[i];
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
if (spec)
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
{
struct die_info *ref_die =
follow_die_ref (dwarf2_get_ref_die_offset (spec));
if (ref_die)
return dwarf_attr (ref_die, name);
}
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return NULL;
}
/* Decode the line number information for the compilation unit whose
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
line number info is at OFFSET in the .debug_line section.
The compilation directory of the file is passed in COMP_DIR. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct filenames
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
unsigned int num_files;
* dwarf2read.c (struct filenames): Change internal "struct file" to "struct fileinfo" to avoid conflict with "struct file" in <sys/file.h> on HPUX and Solaris.
1996-07-21 02:33:27 +08:00
struct fileinfo
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
char *name;
unsigned int dir;
unsigned int time;
unsigned int size;
}
*files;
};
struct directories
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
unsigned int num_dirs;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
char **dirs;
};
static void
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dwarf_decode_lines (offset, comp_dir, abfd)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
unsigned int offset;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
char *comp_dir;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
bfd *abfd;
{
char *line_ptr;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
char *line_end;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct line_head lh;
struct cleanup *back_to;
unsigned int i, bytes_read;
char *cur_file, *cur_dir;
unsigned char op_code, extended_op, adj_opcode;
#define FILE_ALLOC_CHUNK 5
#define DIR_ALLOC_CHUNK 5
struct filenames files;
struct directories dirs;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (dwarf_line_buffer == NULL)
{
complain (&dwarf2_missing_line_number_section);
return;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
files.num_files = 0;
files.files = NULL;
dirs.num_dirs = 0;
dirs.dirs = NULL;
line_ptr = dwarf_line_buffer + offset;
/* read in the prologue */
lh.total_length = read_4_bytes (abfd, line_ptr);
line_ptr += 4;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
line_end = line_ptr + lh.total_length;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
lh.version = read_2_bytes (abfd, line_ptr);
line_ptr += 2;
lh.prologue_length = read_4_bytes (abfd, line_ptr);
line_ptr += 4;
lh.minimum_instruction_length = read_1_byte (abfd, line_ptr);
line_ptr += 1;
lh.default_is_stmt = read_1_byte (abfd, line_ptr);
line_ptr += 1;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
lh.line_base = read_1_signed_byte (abfd, line_ptr);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
line_ptr += 1;
lh.line_range = read_1_byte (abfd, line_ptr);
line_ptr += 1;
lh.opcode_base = read_1_byte (abfd, line_ptr);
line_ptr += 1;
lh.standard_opcode_lengths = (unsigned char *)
xmalloc (lh.opcode_base * sizeof (unsigned char));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
back_to = make_cleanup (free_current_contents, &lh.standard_opcode_lengths);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
lh.standard_opcode_lengths[0] = 1;
for (i = 1; i < lh.opcode_base; ++i)
{
lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr);
line_ptr += 1;
}
/* Read directory table */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
line_ptr += bytes_read;
if ((dirs.num_dirs % DIR_ALLOC_CHUNK) == 0)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
dirs.dirs = (char **)
xrealloc (dirs.dirs,
(dirs.num_dirs + DIR_ALLOC_CHUNK) * sizeof (char *));
if (dirs.num_dirs == 0)
make_cleanup (free_current_contents, &dirs.dirs);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
dirs.dirs[dirs.num_dirs++] = cur_dir;
}
line_ptr += bytes_read;
/* Read file name table */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
line_ptr += bytes_read;
if ((files.num_files % FILE_ALLOC_CHUNK) == 0)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
files.files = (struct fileinfo *)
xrealloc (files.files,
(files.num_files + FILE_ALLOC_CHUNK)
* sizeof (struct fileinfo));
if (files.num_files == 0)
make_cleanup (free_current_contents, &files.files);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
files.files[files.num_files].name = cur_file;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
files.files[files.num_files].dir =
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
line_ptr += bytes_read;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
files.files[files.num_files].time =
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
line_ptr += bytes_read;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
files.files[files.num_files].size =
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
line_ptr += bytes_read;
files.num_files++;
}
line_ptr += bytes_read;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Read the statement sequences until there's nothing left. */
while (line_ptr < line_end)
{
/* state machine registers */
(Mostly from Gavin Koch) In dwarf2read.c, if the ABI is 32 bit and 64 bit addresses are encountered discard the most significant 32 bits. Use CORE_ADDR for address variables instead of long. Add more explicit tx49 configur target. Check/use sigaction/SA_RESTART in remote-sim.c
1997-12-15 20:38:05 +08:00
CORE_ADDR address = 0;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
unsigned int file = 1;
unsigned int line = 1;
unsigned int column = 0;
int is_stmt = lh.default_is_stmt;
int basic_block = 0;
int end_sequence = 0;
/* Start a subfile for the current file of the state machine. */
if (files.num_files >= file)
{
/* The file and directory tables are 0 based, the references
are 1 based. */
dwarf2_start_subfile (files.files[file - 1].name,
(files.files[file - 1].dir
? dirs.dirs[files.files[file - 1].dir - 1]
: comp_dir));
}
/* Decode the table. */
while (! end_sequence)
{
op_code = read_1_byte (abfd, line_ptr);
line_ptr += 1;
switch (op_code)
{
case DW_LNS_extended_op:
line_ptr += 1; /* ignore length */
extended_op = read_1_byte (abfd, line_ptr);
line_ptr += 1;
switch (extended_op)
{
case DW_LNE_end_sequence:
end_sequence = 1;
record_line (current_subfile, line, address);
break;
case DW_LNE_set_address:
address = read_address (abfd, line_ptr) + baseaddr;
line_ptr += address_size;
break;
case DW_LNE_define_file:
cur_file = read_string (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
if ((files.num_files % FILE_ALLOC_CHUNK) == 0)
{
files.files = (struct fileinfo *)
xrealloc (files.files,
(files.num_files + FILE_ALLOC_CHUNK)
* sizeof (struct fileinfo));
if (files.num_files == 0)
make_cleanup (free_current_contents, &files.files);
}
files.files[files.num_files].name = cur_file;
files.files[files.num_files].dir =
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
files.files[files.num_files].time =
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
files.files[files.num_files].size =
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
files.num_files++;
break;
default:
complain (&dwarf2_mangled_line_number_section);
goto done;
}
break;
case DW_LNS_copy:
record_line (current_subfile, line, address);
basic_block = 0;
break;
case DW_LNS_advance_pc:
address += lh.minimum_instruction_length
* read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
break;
case DW_LNS_advance_line:
line += read_signed_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
break;
case DW_LNS_set_file:
/* The file and directory tables are 0 based, the references
are 1 based. */
file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
dwarf2_start_subfile
(files.files[file - 1].name,
(files.files[file - 1].dir
? dirs.dirs[files.files[file - 1].dir - 1]
: comp_dir));
break;
case DW_LNS_set_column:
column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
break;
case DW_LNS_negate_stmt:
is_stmt = (!is_stmt);
break;
case DW_LNS_set_basic_block:
basic_block = 1;
break;
case DW_LNS_const_add_pc:
address += (255 - lh.opcode_base) / lh.line_range;
break;
case DW_LNS_fixed_advance_pc:
address += read_2_bytes (abfd, line_ptr);
line_ptr += 2;
break;
default: /* special operand */
adj_opcode = op_code - lh.opcode_base;
address += (adj_opcode / lh.line_range)
* lh.minimum_instruction_length;
line += lh.line_base + (adj_opcode % lh.line_range);
/* append row to matrix using current values */
record_line (current_subfile, line, address);
basic_block = 1;
}
}
}
done:
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
do_cleanups (back_to);
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Start a subfile for DWARF. FILENAME is the name of the file and
DIRNAME the name of the source directory which contains FILENAME
or NULL if not known.
This routine tries to keep line numbers from identical absolute and
relative file names in a common subfile.
Using the `list' example from the GDB testsuite, which resides in
/srcdir and compiling it with Irix6.2 cc in /compdir using a filename
of /srcdir/list0.c yields the following debugging information for list0.c:
DW_AT_name: /srcdir/list0.c
DW_AT_comp_dir: /compdir
files.files[0].name: list0.h
files.files[0].dir: /srcdir
files.files[1].name: list0.c
files.files[1].dir: /srcdir
The line number information for list0.c has to end up in a single
subfile, so that `break /srcdir/list0.c:1' works as expected. */
static void
dwarf2_start_subfile (filename, dirname)
char *filename;
char *dirname;
{
/* If the filename isn't absolute, try to match an existing subfile
with the full pathname. */
if (*filename != '/' && dirname != NULL)
{
struct subfile *subfile;
char *fullname = concat (dirname, "/", filename, NULL);
for (subfile = subfiles; subfile; subfile = subfile->next)
{
if (STREQ (subfile->name, fullname))
{
current_subfile = subfile;
free (fullname);
return;
}
}
free (fullname);
}
start_subfile (filename, dirname);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Given a pointer to a DWARF information entry, figure out if we need
to make a symbol table entry for it, and if so, create a new entry
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
and return a pointer to it.
If TYPE is NULL, determine symbol type from the die, otherwise
used the passed type.
*/
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct symbol *
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
new_symbol (die, type, objfile)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *die;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct type *type;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct objfile *objfile;
{
struct symbol *sym = NULL;
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
char *name;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct attribute *attr = NULL;
struct attribute *attr2 = NULL;
CORE_ADDR addr;
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
name = dwarf2_linkage_name (die);
if (name)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
sym = (struct symbol *) obstack_alloc (&objfile->symbol_obstack,
sizeof (struct symbol));
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
OBJSTAT (objfile, n_syms++);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
memset (sym, 0, sizeof (struct symbol));
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
SYMBOL_NAME (sym) = obsavestring (name, strlen (name),
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
&objfile->symbol_obstack);
/* Default assumptions.
Use the passed type or decode it from the die. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
SYMBOL_CLASS (sym) = LOC_STATIC;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (type != NULL)
SYMBOL_TYPE (sym) = type;
else
SYMBOL_TYPE (sym) = die_type (die, objfile);
attr = dwarf_attr (die, DW_AT_decl_line);
if (attr)
{
SYMBOL_LINE (sym) = DW_UNSND (attr);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* If this symbol is from a C++ compilation, then attempt to
cache the demangled form for future reference. This is a
typical time versus space tradeoff, that was decided in favor
of time because it sped up C++ symbol lookups by a factor of
about 20. */
SYMBOL_LANGUAGE (sym) = cu_language;
SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
switch (die->tag)
{
case DW_TAG_label:
attr = dwarf_attr (die, DW_AT_low_pc);
if (attr)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
SYMBOL_CLASS (sym) = LOC_LABEL;
break;
case DW_TAG_subprogram:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* SYMBOL_BLOCK_VALUE (sym) will be filled in later by
finish_block. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
SYMBOL_CLASS (sym) = LOC_BLOCK;
attr2 = dwarf_attr (die, DW_AT_external);
if (attr2 && (DW_UNSND (attr2) != 0))
{
add_symbol_to_list (sym, &global_symbols);
}
else
{
add_symbol_to_list (sym, list_in_scope);
}
break;
case DW_TAG_variable:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* Compilation with minimal debug info may result in variables
with missing type entries. Change the misleading `void' type
to something sensible. */
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID)
SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / HOST_CHAR_BIT, 0,
"<variable, no debug info>",
objfile);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
attr = dwarf_attr (die, DW_AT_const_value);
if (attr)
{
dwarf2_const_value (attr, sym, objfile);
attr2 = dwarf_attr (die, DW_AT_external);
if (attr2 && (DW_UNSND (attr2) != 0))
add_symbol_to_list (sym, &global_symbols);
else
add_symbol_to_list (sym, list_in_scope);
break;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
attr = dwarf_attr (die, DW_AT_location);
if (attr)
{
attr2 = dwarf_attr (die, DW_AT_external);
if (attr2 && (DW_UNSND (attr2) != 0))
{
SYMBOL_VALUE_ADDRESS (sym) =
decode_locdesc (DW_BLOCK (attr), objfile);
add_symbol_to_list (sym, &global_symbols);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* In shared libraries the address of the variable
in the location descriptor might still be relocatable,
so its value could be zero.
Enter the symbol as a LOC_UNRESOLVED symbol, if its
value is zero, the address of the variable will then
be determined from the minimal symbol table whenever
the variable is referenced. */
if (SYMBOL_VALUE_ADDRESS (sym))
{
SYMBOL_VALUE_ADDRESS (sym) += baseaddr;
SYMBOL_CLASS (sym) = LOC_STATIC;
}
else
SYMBOL_CLASS (sym) = LOC_UNRESOLVED;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
else
{
SYMBOL_VALUE (sym) = addr =
decode_locdesc (DW_BLOCK (attr), objfile);
add_symbol_to_list (sym, list_in_scope);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (optimized_out)
{
SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
}
else if (isreg)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
SYMBOL_CLASS (sym) = LOC_REGISTER;
}
else if (offreg)
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
{
SYMBOL_CLASS (sym) = LOC_BASEREG;
SYMBOL_BASEREG (sym) = basereg;
}
else if (islocal)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
SYMBOL_CLASS (sym) = LOC_LOCAL;
}
else
{
SYMBOL_CLASS (sym) = LOC_STATIC;
SYMBOL_VALUE_ADDRESS (sym) = addr + baseaddr;
}
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
else
{
/* We do not know the address of this symbol.
If it is an external symbol and we have type information
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
for it, enter the symbol as a LOC_UNRESOLVED symbol.
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
The address of the variable will then be determined from
the minimal symbol table whenever the variable is
referenced. */
attr2 = dwarf_attr (die, DW_AT_external);
if (attr2 && (DW_UNSND (attr2) != 0)
&& dwarf_attr (die, DW_AT_type) != NULL)
{
SYMBOL_CLASS (sym) = LOC_UNRESOLVED;
add_symbol_to_list (sym, &global_symbols);
}
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_formal_parameter:
attr = dwarf_attr (die, DW_AT_location);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (attr)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
SYMBOL_VALUE (sym) = decode_locdesc (DW_BLOCK (attr), objfile);
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (isreg)
{
SYMBOL_CLASS (sym) = LOC_REGPARM;
}
else if (offreg)
{
SYMBOL_CLASS (sym) = LOC_BASEREG_ARG;
SYMBOL_BASEREG (sym) = basereg;
}
else
{
SYMBOL_CLASS (sym) = LOC_ARG;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
attr = dwarf_attr (die, DW_AT_const_value);
if (attr)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
dwarf2_const_value (attr, sym, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
add_symbol_to_list (sym, list_in_scope);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_unspecified_parameters:
/* From varargs functions; gdb doesn't seem to have any
interest in this information, so just ignore it for now.
(FIXME?) */
break;
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_enumeration_type:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
add_symbol_to_list (sym, list_in_scope);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* The semantics of C++ state that "struct foo { ... }" also
defines a typedef for "foo". Synthesize a typedef symbol so
that "ptype foo" works as expected. */
if (cu_language == language_cplus)
{
struct symbol *typedef_sym = (struct symbol *)
obstack_alloc (&objfile->symbol_obstack,
sizeof (struct symbol));
*typedef_sym = *sym;
SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE;
if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
TYPE_NAME (SYMBOL_TYPE (sym)) =
obsavestring (SYMBOL_NAME (sym),
strlen (SYMBOL_NAME (sym)),
&objfile->type_obstack);
add_symbol_to_list (typedef_sym, list_in_scope);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_typedef:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
case DW_TAG_base_type:
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
add_symbol_to_list (sym, list_in_scope);
break;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_TAG_enumerator:
attr = dwarf_attr (die, DW_AT_const_value);
if (attr)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
dwarf2_const_value (attr, sym, objfile);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
}
add_symbol_to_list (sym, list_in_scope);
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
default:
/* Not a tag we recognize. Hopefully we aren't processing
trash data, but since we must specifically ignore things
we don't recognize, there is nothing else we should do at
this point. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
complain (&dwarf2_unsupported_tag, dwarf_tag_name (die->tag));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
}
}
return (sym);
}
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
/* Copy constant value from an attribute to a symbol. */
static void
dwarf2_const_value (attr, sym, objfile)
struct attribute *attr;
struct symbol *sym;
struct objfile *objfile;
{
struct dwarf_block *blk;
switch (attr->form)
{
case DW_FORM_addr:
if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != (unsigned int) address_size)
complain (&dwarf2_const_value_length_mismatch, SYMBOL_NAME (sym),
address_size, TYPE_LENGTH (SYMBOL_TYPE (sym)));
SYMBOL_VALUE_BYTES (sym) = (char *)
obstack_alloc (&objfile->symbol_obstack, address_size);
store_address (SYMBOL_VALUE_BYTES (sym), address_size, DW_ADDR (attr));
SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
break;
case DW_FORM_block1:
case DW_FORM_block2:
case DW_FORM_block4:
case DW_FORM_block:
blk = DW_BLOCK (attr);
if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size)
complain (&dwarf2_const_value_length_mismatch, SYMBOL_NAME (sym),
blk->size, TYPE_LENGTH (SYMBOL_TYPE (sym)));
SYMBOL_VALUE_BYTES (sym) = (char *)
obstack_alloc (&objfile->symbol_obstack, blk->size);
memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size);
SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
break;
case DW_FORM_data2:
case DW_FORM_data4:
case DW_FORM_data8:
case DW_FORM_data1:
case DW_FORM_sdata:
case DW_FORM_udata:
SYMBOL_VALUE (sym) = DW_UNSND (attr);
SYMBOL_CLASS (sym) = LOC_CONST;
break;
default:
complain (&dwarf2_unsupported_const_value_attr,
dwarf_form_name (attr->form));
SYMBOL_VALUE (sym) = 0;
SYMBOL_CLASS (sym) = LOC_CONST;
break;
}
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Return the type of the die in question using its DW_AT_type attribute. */
static struct type *
die_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct type *type;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
struct attribute *type_attr;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *type_die;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
unsigned int ref;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
type_attr = dwarf_attr (die, DW_AT_type);
if (!type_attr)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* A missing DW_AT_type represents a void type. */
return dwarf2_fundamental_type (objfile, FT_VOID);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
else
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
ref = dwarf2_get_ref_die_offset (type_attr);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
type_die = follow_die_ref (ref);
if (!type_die)
{
error ("Dwarf Error: Cannot find referent at offset %d.", ref);
return NULL;
}
}
type = tag_type_to_type (type_die, objfile);
if (!type)
{
dump_die (type_die);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
error ("Dwarf Error: Problem turning type die at offset into gdb type.");
}
return type;
}
/* Return the containing type of the die in question using its
DW_AT_containing_type attribute. */
static struct type *
die_containing_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
struct type *type = NULL;
struct attribute *type_attr;
struct die_info *type_die = NULL;
unsigned int ref;
type_attr = dwarf_attr (die, DW_AT_containing_type);
if (type_attr)
{
ref = dwarf2_get_ref_die_offset (type_attr);
type_die = follow_die_ref (ref);
if (!type_die)
{
error ("Dwarf Error: Cannot find referent at offset %d.", ref);
return NULL;
}
type = tag_type_to_type (type_die, objfile);
}
if (!type)
{
if (type_die)
dump_die (type_die);
error ("Dwarf Error: Problem turning containing type into gdb type.");
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
return type;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#if 0
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct type *
type_at_offset (offset, objfile)
unsigned int offset;
struct objfile *objfile;
{
struct die_info *die;
struct type *type;
die = follow_die_ref (offset);
if (!die)
{
error ("Dwarf Error: Cannot find type referent at offset %d.", offset);
return NULL;
}
type = tag_type_to_type (die, objfile);
return type;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static struct type *
tag_type_to_type (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
if (die->type)
{
return die->type;
}
else
{
read_type_die (die, objfile);
if (!die->type)
{
dump_die (die);
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
error ("Dwarf Error: Cannot find type of die.");
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
return die->type;
}
}
static void
read_type_die (die, objfile)
struct die_info *die;
struct objfile *objfile;
{
switch (die->tag)
{
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
read_structure_scope (die, objfile);
break;
case DW_TAG_enumeration_type:
read_enumeration (die, objfile);
break;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_TAG_subprogram:
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_TAG_subroutine_type:
read_subroutine_type (die, objfile);
break;
case DW_TAG_array_type:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
read_array_type (die, objfile);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_TAG_pointer_type:
read_tag_pointer_type (die, objfile);
break;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_TAG_ptr_to_member_type:
read_tag_ptr_to_member_type (die, objfile);
break;
Sun Oct 6 22:43:06 1996 Jason Merrill <jason@yorick.cygnus.com> * dwarf2read.c (read_tag_reference_type): New fn. (read_type_die): Call it. (dwarf_attr): Also look in the DIEs referred to by specification or abstract_origin attributes.
1996-10-08 01:18:24 +08:00
case DW_TAG_reference_type:
read_tag_reference_type (die, objfile);
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_TAG_const_type:
read_tag_const_type (die, objfile);
break;
case DW_TAG_volatile_type:
read_tag_volatile_type (die, objfile);
break;
case DW_TAG_string_type:
read_tag_string_type (die, objfile);
break;
case DW_TAG_typedef:
read_typedef (die, objfile);
break;
case DW_TAG_base_type:
read_base_type (die, objfile);
break;
default:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
complain (&dwarf2_unexpected_tag, dwarf_tag_name (die->tag));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
}
}
static struct type *
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
dwarf_base_type (encoding, size, objfile)
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
int encoding;
int size;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
struct objfile *objfile;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
/* FIXME - this should not produce a new (struct type *)
every time. It should cache base types. */
struct type *type;
switch (encoding)
{
case DW_ATE_address:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_VOID);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return type;
case DW_ATE_boolean:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_BOOLEAN);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return type;
case DW_ATE_complex_float:
if (size == 16)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
else
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_COMPLEX);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
return type;
case DW_ATE_float:
if (size == 8)
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
else
{
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_FLOAT);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
return type;
case DW_ATE_signed:
switch (size)
{
case 1:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case 2:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
default:
case 4:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
}
return type;
case DW_ATE_signed_char:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return type;
case DW_ATE_unsigned:
switch (size)
{
case 1:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case 2:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
default:
case 4:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
}
return type;
case DW_ATE_unsigned_char:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return type;
default:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
return type;
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#if 0
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *
copy_die (old_die)
struct die_info *old_die;
{
struct die_info *new_die;
int i, num_attrs;
new_die = (struct die_info *) xmalloc (sizeof (struct die_info));
memset (new_die, 0, sizeof (struct die_info));
new_die->tag = old_die->tag;
new_die->has_children = old_die->has_children;
new_die->abbrev = old_die->abbrev;
new_die->offset = old_die->offset;
new_die->type = NULL;
num_attrs = old_die->num_attrs;
new_die->num_attrs = num_attrs;
new_die->attrs = (struct attribute *)
xmalloc (num_attrs * sizeof (struct attribute));
for (i = 0; i < old_die->num_attrs; ++i)
{
new_die->attrs[i].name = old_die->attrs[i].name;
new_die->attrs[i].form = old_die->attrs[i].form;
new_die->attrs[i].u.addr = old_die->attrs[i].u.addr;
}
new_die->next = NULL;
return new_die;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Return sibling of die, NULL if no sibling. */
struct die_info *
sibling_die (die)
struct die_info *die;
{
int nesting_level = 0;
if (!die->has_children)
{
if (die->next && (die->next->tag == 0))
{
return NULL;
}
else
{
return die->next;
}
}
else
{
do
{
if (die->has_children)
{
nesting_level++;
}
if (die->tag == 0)
{
nesting_level--;
}
die = die->next;
}
while (nesting_level);
if (die && (die->tag == 0))
{
return NULL;
}
else
{
return die;
}
}
}
* dwarf2read.c (dwarf2_linkage_name): New function to get the linkage name of a die from DW_AT_MIPS_linkage_name or DW_AT_name. (read_func_scope, dwarf2_add_field, dwarf2_add_member_fn, new_symbol): Use it instead of accessing DW_AT_name. (read_partial_die): Use DW_AT_MIPS_linkage name as name of the partial die if present. (dwarf2_add_member_fn): Make a copy of physname on the type obstack.
1997-02-08 17:16:26 +08:00
/* Get linkage name of a die, return NULL if not found. */
static char *
dwarf2_linkage_name (die)
struct die_info *die;
{
struct attribute *attr;
attr = dwarf_attr (die, DW_AT_MIPS_linkage_name);
if (attr && DW_STRING (attr))
return DW_STRING (attr);
attr = dwarf_attr (die, DW_AT_name);
if (attr && DW_STRING (attr))
return DW_STRING (attr);
return NULL;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
/* Convert a DIE tag into its string name. */
static char *
dwarf_tag_name (tag)
register unsigned tag;
{
switch (tag)
{
case DW_TAG_padding:
return "DW_TAG_padding";
case DW_TAG_array_type:
return "DW_TAG_array_type";
case DW_TAG_class_type:
return "DW_TAG_class_type";
case DW_TAG_entry_point:
return "DW_TAG_entry_point";
case DW_TAG_enumeration_type:
return "DW_TAG_enumeration_type";
case DW_TAG_formal_parameter:
return "DW_TAG_formal_parameter";
case DW_TAG_imported_declaration:
return "DW_TAG_imported_declaration";
case DW_TAG_label:
return "DW_TAG_label";
case DW_TAG_lexical_block:
return "DW_TAG_lexical_block";
case DW_TAG_member:
return "DW_TAG_member";
case DW_TAG_pointer_type:
return "DW_TAG_pointer_type";
case DW_TAG_reference_type:
return "DW_TAG_reference_type";
case DW_TAG_compile_unit:
return "DW_TAG_compile_unit";
case DW_TAG_string_type:
return "DW_TAG_string_type";
case DW_TAG_structure_type:
return "DW_TAG_structure_type";
case DW_TAG_subroutine_type:
return "DW_TAG_subroutine_type";
case DW_TAG_typedef:
return "DW_TAG_typedef";
case DW_TAG_union_type:
return "DW_TAG_union_type";
case DW_TAG_unspecified_parameters:
return "DW_TAG_unspecified_parameters";
case DW_TAG_variant:
return "DW_TAG_variant";
case DW_TAG_common_block:
return "DW_TAG_common_block";
case DW_TAG_common_inclusion:
return "DW_TAG_common_inclusion";
case DW_TAG_inheritance:
return "DW_TAG_inheritance";
case DW_TAG_inlined_subroutine:
return "DW_TAG_inlined_subroutine";
case DW_TAG_module:
return "DW_TAG_module";
case DW_TAG_ptr_to_member_type:
return "DW_TAG_ptr_to_member_type";
case DW_TAG_set_type:
return "DW_TAG_set_type";
case DW_TAG_subrange_type:
return "DW_TAG_subrange_type";
case DW_TAG_with_stmt:
return "DW_TAG_with_stmt";
case DW_TAG_access_declaration:
return "DW_TAG_access_declaration";
case DW_TAG_base_type:
return "DW_TAG_base_type";
case DW_TAG_catch_block:
return "DW_TAG_catch_block";
case DW_TAG_const_type:
return "DW_TAG_const_type";
case DW_TAG_constant:
return "DW_TAG_constant";
case DW_TAG_enumerator:
return "DW_TAG_enumerator";
case DW_TAG_file_type:
return "DW_TAG_file_type";
case DW_TAG_friend:
return "DW_TAG_friend";
case DW_TAG_namelist:
return "DW_TAG_namelist";
case DW_TAG_namelist_item:
return "DW_TAG_namelist_item";
case DW_TAG_packed_type:
return "DW_TAG_packed_type";
case DW_TAG_subprogram:
return "DW_TAG_subprogram";
case DW_TAG_template_type_param:
return "DW_TAG_template_type_param";
case DW_TAG_template_value_param:
return "DW_TAG_template_value_param";
case DW_TAG_thrown_type:
return "DW_TAG_thrown_type";
case DW_TAG_try_block:
return "DW_TAG_try_block";
case DW_TAG_variant_part:
return "DW_TAG_variant_part";
case DW_TAG_variable:
return "DW_TAG_variable";
case DW_TAG_volatile_type:
return "DW_TAG_volatile_type";
case DW_TAG_MIPS_loop:
return "DW_TAG_MIPS_loop";
case DW_TAG_format_label:
return "DW_TAG_format_label";
case DW_TAG_function_template:
return "DW_TAG_function_template";
case DW_TAG_class_template:
return "DW_TAG_class_template";
default:
return "DW_TAG_<unknown>";
}
}
/* Convert a DWARF attribute code into its string name. */
static char *
dwarf_attr_name (attr)
register unsigned attr;
{
switch (attr)
{
case DW_AT_sibling:
return "DW_AT_sibling";
case DW_AT_location:
return "DW_AT_location";
case DW_AT_name:
return "DW_AT_name";
case DW_AT_ordering:
return "DW_AT_ordering";
case DW_AT_subscr_data:
return "DW_AT_subscr_data";
case DW_AT_byte_size:
return "DW_AT_byte_size";
case DW_AT_bit_offset:
return "DW_AT_bit_offset";
case DW_AT_bit_size:
return "DW_AT_bit_size";
case DW_AT_element_list:
return "DW_AT_element_list";
case DW_AT_stmt_list:
return "DW_AT_stmt_list";
case DW_AT_low_pc:
return "DW_AT_low_pc";
case DW_AT_high_pc:
return "DW_AT_high_pc";
case DW_AT_language:
return "DW_AT_language";
case DW_AT_member:
return "DW_AT_member";
case DW_AT_discr:
return "DW_AT_discr";
case DW_AT_discr_value:
return "DW_AT_discr_value";
case DW_AT_visibility:
return "DW_AT_visibility";
case DW_AT_import:
return "DW_AT_import";
case DW_AT_string_length:
return "DW_AT_string_length";
case DW_AT_common_reference:
return "DW_AT_common_reference";
case DW_AT_comp_dir:
return "DW_AT_comp_dir";
case DW_AT_const_value:
return "DW_AT_const_value";
case DW_AT_containing_type:
return "DW_AT_containing_type";
case DW_AT_default_value:
return "DW_AT_default_value";
case DW_AT_inline:
return "DW_AT_inline";
case DW_AT_is_optional:
return "DW_AT_is_optional";
case DW_AT_lower_bound:
return "DW_AT_lower_bound";
case DW_AT_producer:
return "DW_AT_producer";
case DW_AT_prototyped:
return "DW_AT_prototyped";
case DW_AT_return_addr:
return "DW_AT_return_addr";
case DW_AT_start_scope:
return "DW_AT_start_scope";
case DW_AT_stride_size:
return "DW_AT_stride_size";
case DW_AT_upper_bound:
return "DW_AT_upper_bound";
case DW_AT_abstract_origin:
return "DW_AT_abstract_origin";
case DW_AT_accessibility:
return "DW_AT_accessibility";
case DW_AT_address_class:
return "DW_AT_address_class";
case DW_AT_artificial:
return "DW_AT_artificial";
case DW_AT_base_types:
return "DW_AT_base_types";
case DW_AT_calling_convention:
return "DW_AT_calling_convention";
case DW_AT_count:
return "DW_AT_count";
case DW_AT_data_member_location:
return "DW_AT_data_member_location";
case DW_AT_decl_column:
return "DW_AT_decl_column";
case DW_AT_decl_file:
return "DW_AT_decl_file";
case DW_AT_decl_line:
return "DW_AT_decl_line";
case DW_AT_declaration:
return "DW_AT_declaration";
case DW_AT_discr_list:
return "DW_AT_discr_list";
case DW_AT_encoding:
return "DW_AT_encoding";
case DW_AT_external:
return "DW_AT_external";
case DW_AT_frame_base:
return "DW_AT_frame_base";
case DW_AT_friend:
return "DW_AT_friend";
case DW_AT_identifier_case:
return "DW_AT_identifier_case";
case DW_AT_macro_info:
return "DW_AT_macro_info";
case DW_AT_namelist_items:
return "DW_AT_namelist_items";
case DW_AT_priority:
return "DW_AT_priority";
case DW_AT_segment:
return "DW_AT_segment";
case DW_AT_specification:
return "DW_AT_specification";
case DW_AT_static_link:
return "DW_AT_static_link";
case DW_AT_type:
return "DW_AT_type";
case DW_AT_use_location:
return "DW_AT_use_location";
case DW_AT_variable_parameter:
return "DW_AT_variable_parameter";
case DW_AT_virtuality:
return "DW_AT_virtuality";
case DW_AT_vtable_elem_location:
return "DW_AT_vtable_elem_location";
#ifdef MIPS
case DW_AT_MIPS_fde:
return "DW_AT_MIPS_fde";
case DW_AT_MIPS_loop_begin:
return "DW_AT_MIPS_loop_begin";
case DW_AT_MIPS_tail_loop_begin:
return "DW_AT_MIPS_tail_loop_begin";
case DW_AT_MIPS_epilog_begin:
return "DW_AT_MIPS_epilog_begin";
case DW_AT_MIPS_loop_unroll_factor:
return "DW_AT_MIPS_loop_unroll_factor";
case DW_AT_MIPS_software_pipeline_depth:
return "DW_AT_MIPS_software_pipeline_depth";
case DW_AT_MIPS_linkage_name:
return "DW_AT_MIPS_linkage_name";
#endif
case DW_AT_sf_names:
return "DW_AT_sf_names";
case DW_AT_src_info:
return "DW_AT_src_info";
case DW_AT_mac_info:
return "DW_AT_mac_info";
case DW_AT_src_coords:
return "DW_AT_src_coords";
case DW_AT_body_begin:
return "DW_AT_body_begin";
case DW_AT_body_end:
return "DW_AT_body_end";
default:
return "DW_AT_<unknown>";
}
}
/* Convert a DWARF value form code into its string name. */
static char *
dwarf_form_name (form)
register unsigned form;
{
switch (form)
{
case DW_FORM_addr:
return "DW_FORM_addr";
case DW_FORM_block2:
return "DW_FORM_block2";
case DW_FORM_block4:
return "DW_FORM_block4";
case DW_FORM_data2:
return "DW_FORM_data2";
case DW_FORM_data4:
return "DW_FORM_data4";
case DW_FORM_data8:
return "DW_FORM_data8";
case DW_FORM_string:
return "DW_FORM_string";
case DW_FORM_block:
return "DW_FORM_block";
case DW_FORM_block1:
return "DW_FORM_block1";
case DW_FORM_data1:
return "DW_FORM_data1";
case DW_FORM_flag:
return "DW_FORM_flag";
case DW_FORM_sdata:
return "DW_FORM_sdata";
case DW_FORM_strp:
return "DW_FORM_strp";
case DW_FORM_udata:
return "DW_FORM_udata";
case DW_FORM_ref_addr:
return "DW_FORM_ref_addr";
case DW_FORM_ref1:
return "DW_FORM_ref1";
case DW_FORM_ref2:
return "DW_FORM_ref2";
case DW_FORM_ref4:
return "DW_FORM_ref4";
case DW_FORM_ref8:
return "DW_FORM_ref8";
case DW_FORM_ref_udata:
return "DW_FORM_ref_udata";
case DW_FORM_indirect:
return "DW_FORM_indirect";
default:
return "DW_FORM_<unknown>";
}
}
/* Convert a DWARF stack opcode into its string name. */
static char *
dwarf_stack_op_name (op)
register unsigned op;
{
switch (op)
{
case DW_OP_addr:
return "DW_OP_addr";
case DW_OP_deref:
return "DW_OP_deref";
case DW_OP_const1u:
return "DW_OP_const1u";
case DW_OP_const1s:
return "DW_OP_const1s";
case DW_OP_const2u:
return "DW_OP_const2u";
case DW_OP_const2s:
return "DW_OP_const2s";
case DW_OP_const4u:
return "DW_OP_const4u";
case DW_OP_const4s:
return "DW_OP_const4s";
case DW_OP_const8u:
return "DW_OP_const8u";
case DW_OP_const8s:
return "DW_OP_const8s";
case DW_OP_constu:
return "DW_OP_constu";
case DW_OP_consts:
return "DW_OP_consts";
case DW_OP_dup:
return "DW_OP_dup";
case DW_OP_drop:
return "DW_OP_drop";
case DW_OP_over:
return "DW_OP_over";
case DW_OP_pick:
return "DW_OP_pick";
case DW_OP_swap:
return "DW_OP_swap";
case DW_OP_rot:
return "DW_OP_rot";
case DW_OP_xderef:
return "DW_OP_xderef";
case DW_OP_abs:
return "DW_OP_abs";
case DW_OP_and:
return "DW_OP_and";
case DW_OP_div:
return "DW_OP_div";
case DW_OP_minus:
return "DW_OP_minus";
case DW_OP_mod:
return "DW_OP_mod";
case DW_OP_mul:
return "DW_OP_mul";
case DW_OP_neg:
return "DW_OP_neg";
case DW_OP_not:
return "DW_OP_not";
case DW_OP_or:
return "DW_OP_or";
case DW_OP_plus:
return "DW_OP_plus";
case DW_OP_plus_uconst:
return "DW_OP_plus_uconst";
case DW_OP_shl:
return "DW_OP_shl";
case DW_OP_shr:
return "DW_OP_shr";
case DW_OP_shra:
return "DW_OP_shra";
case DW_OP_xor:
return "DW_OP_xor";
case DW_OP_bra:
return "DW_OP_bra";
case DW_OP_eq:
return "DW_OP_eq";
case DW_OP_ge:
return "DW_OP_ge";
case DW_OP_gt:
return "DW_OP_gt";
case DW_OP_le:
return "DW_OP_le";
case DW_OP_lt:
return "DW_OP_lt";
case DW_OP_ne:
return "DW_OP_ne";
case DW_OP_skip:
return "DW_OP_skip";
case DW_OP_lit0:
return "DW_OP_lit0";
case DW_OP_lit1:
return "DW_OP_lit1";
case DW_OP_lit2:
return "DW_OP_lit2";
case DW_OP_lit3:
return "DW_OP_lit3";
case DW_OP_lit4:
return "DW_OP_lit4";
case DW_OP_lit5:
return "DW_OP_lit5";
case DW_OP_lit6:
return "DW_OP_lit6";
case DW_OP_lit7:
return "DW_OP_lit7";
case DW_OP_lit8:
return "DW_OP_lit8";
case DW_OP_lit9:
return "DW_OP_lit9";
case DW_OP_lit10:
return "DW_OP_lit10";
case DW_OP_lit11:
return "DW_OP_lit11";
case DW_OP_lit12:
return "DW_OP_lit12";
case DW_OP_lit13:
return "DW_OP_lit13";
case DW_OP_lit14:
return "DW_OP_lit14";
case DW_OP_lit15:
return "DW_OP_lit15";
case DW_OP_lit16:
return "DW_OP_lit16";
case DW_OP_lit17:
return "DW_OP_lit17";
case DW_OP_lit18:
return "DW_OP_lit18";
case DW_OP_lit19:
return "DW_OP_lit19";
case DW_OP_lit20:
return "DW_OP_lit20";
case DW_OP_lit21:
return "DW_OP_lit21";
case DW_OP_lit22:
return "DW_OP_lit22";
case DW_OP_lit23:
return "DW_OP_lit23";
case DW_OP_lit24:
return "DW_OP_lit24";
case DW_OP_lit25:
return "DW_OP_lit25";
case DW_OP_lit26:
return "DW_OP_lit26";
case DW_OP_lit27:
return "DW_OP_lit27";
case DW_OP_lit28:
return "DW_OP_lit28";
case DW_OP_lit29:
return "DW_OP_lit29";
case DW_OP_lit30:
return "DW_OP_lit30";
case DW_OP_lit31:
return "DW_OP_lit31";
case DW_OP_reg0:
return "DW_OP_reg0";
case DW_OP_reg1:
return "DW_OP_reg1";
case DW_OP_reg2:
return "DW_OP_reg2";
case DW_OP_reg3:
return "DW_OP_reg3";
case DW_OP_reg4:
return "DW_OP_reg4";
case DW_OP_reg5:
return "DW_OP_reg5";
case DW_OP_reg6:
return "DW_OP_reg6";
case DW_OP_reg7:
return "DW_OP_reg7";
case DW_OP_reg8:
return "DW_OP_reg8";
case DW_OP_reg9:
return "DW_OP_reg9";
case DW_OP_reg10:
return "DW_OP_reg10";
case DW_OP_reg11:
return "DW_OP_reg11";
case DW_OP_reg12:
return "DW_OP_reg12";
case DW_OP_reg13:
return "DW_OP_reg13";
case DW_OP_reg14:
return "DW_OP_reg14";
case DW_OP_reg15:
return "DW_OP_reg15";
case DW_OP_reg16:
return "DW_OP_reg16";
case DW_OP_reg17:
return "DW_OP_reg17";
case DW_OP_reg18:
return "DW_OP_reg18";
case DW_OP_reg19:
return "DW_OP_reg19";
case DW_OP_reg20:
return "DW_OP_reg20";
case DW_OP_reg21:
return "DW_OP_reg21";
case DW_OP_reg22:
return "DW_OP_reg22";
case DW_OP_reg23:
return "DW_OP_reg23";
case DW_OP_reg24:
return "DW_OP_reg24";
case DW_OP_reg25:
return "DW_OP_reg25";
case DW_OP_reg26:
return "DW_OP_reg26";
case DW_OP_reg27:
return "DW_OP_reg27";
case DW_OP_reg28:
return "DW_OP_reg28";
case DW_OP_reg29:
return "DW_OP_reg29";
case DW_OP_reg30:
return "DW_OP_reg30";
case DW_OP_reg31:
return "DW_OP_reg31";
case DW_OP_breg0:
return "DW_OP_breg0";
case DW_OP_breg1:
return "DW_OP_breg1";
case DW_OP_breg2:
return "DW_OP_breg2";
case DW_OP_breg3:
return "DW_OP_breg3";
case DW_OP_breg4:
return "DW_OP_breg4";
case DW_OP_breg5:
return "DW_OP_breg5";
case DW_OP_breg6:
return "DW_OP_breg6";
case DW_OP_breg7:
return "DW_OP_breg7";
case DW_OP_breg8:
return "DW_OP_breg8";
case DW_OP_breg9:
return "DW_OP_breg9";
case DW_OP_breg10:
return "DW_OP_breg10";
case DW_OP_breg11:
return "DW_OP_breg11";
case DW_OP_breg12:
return "DW_OP_breg12";
case DW_OP_breg13:
return "DW_OP_breg13";
case DW_OP_breg14:
return "DW_OP_breg14";
case DW_OP_breg15:
return "DW_OP_breg15";
case DW_OP_breg16:
return "DW_OP_breg16";
case DW_OP_breg17:
return "DW_OP_breg17";
case DW_OP_breg18:
return "DW_OP_breg18";
case DW_OP_breg19:
return "DW_OP_breg19";
case DW_OP_breg20:
return "DW_OP_breg20";
case DW_OP_breg21:
return "DW_OP_breg21";
case DW_OP_breg22:
return "DW_OP_breg22";
case DW_OP_breg23:
return "DW_OP_breg23";
case DW_OP_breg24:
return "DW_OP_breg24";
case DW_OP_breg25:
return "DW_OP_breg25";
case DW_OP_breg26:
return "DW_OP_breg26";
case DW_OP_breg27:
return "DW_OP_breg27";
case DW_OP_breg28:
return "DW_OP_breg28";
case DW_OP_breg29:
return "DW_OP_breg29";
case DW_OP_breg30:
return "DW_OP_breg30";
case DW_OP_breg31:
return "DW_OP_breg31";
case DW_OP_regx:
return "DW_OP_regx";
case DW_OP_fbreg:
return "DW_OP_fbreg";
case DW_OP_bregx:
return "DW_OP_bregx";
case DW_OP_piece:
return "DW_OP_piece";
case DW_OP_deref_size:
return "DW_OP_deref_size";
case DW_OP_xderef_size:
return "DW_OP_xderef_size";
case DW_OP_nop:
return "DW_OP_nop";
default:
return "OP_<unknown>";
}
}
static char *
dwarf_bool_name (bool)
unsigned bool;
{
if (bool)
return "TRUE";
else
return "FALSE";
}
/* Convert a DWARF type code into its string name. */
static char *
dwarf_type_encoding_name (enc)
register unsigned enc;
{
switch (enc)
{
case DW_ATE_address:
return "DW_ATE_address";
case DW_ATE_boolean:
return "DW_ATE_boolean";
case DW_ATE_complex_float:
return "DW_ATE_complex_float";
case DW_ATE_float:
return "DW_ATE_float";
case DW_ATE_signed:
return "DW_ATE_signed";
case DW_ATE_signed_char:
return "DW_ATE_signed_char";
case DW_ATE_unsigned:
return "DW_ATE_unsigned";
case DW_ATE_unsigned_char:
return "DW_ATE_unsigned_char";
default:
return "DW_ATE_<unknown>";
}
}
/* Convert a DWARF call frame info operation to its string name. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#if 0
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static char *
dwarf_cfi_name (cfi_opc)
register unsigned cfi_opc;
{
switch (cfi_opc)
{
case DW_CFA_advance_loc:
return "DW_CFA_advance_loc";
case DW_CFA_offset:
return "DW_CFA_offset";
case DW_CFA_restore:
return "DW_CFA_restore";
case DW_CFA_nop:
return "DW_CFA_nop";
case DW_CFA_set_loc:
return "DW_CFA_set_loc";
case DW_CFA_advance_loc1:
return "DW_CFA_advance_loc1";
case DW_CFA_advance_loc2:
return "DW_CFA_advance_loc2";
case DW_CFA_advance_loc4:
return "DW_CFA_advance_loc4";
case DW_CFA_offset_extended:
return "DW_CFA_offset_extended";
case DW_CFA_restore_extended:
return "DW_CFA_restore_extended";
case DW_CFA_undefined:
return "DW_CFA_undefined";
case DW_CFA_same_value:
return "DW_CFA_same_value";
case DW_CFA_register:
return "DW_CFA_register";
case DW_CFA_remember_state:
return "DW_CFA_remember_state";
case DW_CFA_restore_state:
return "DW_CFA_restore_state";
case DW_CFA_def_cfa:
return "DW_CFA_def_cfa";
case DW_CFA_def_cfa_register:
return "DW_CFA_def_cfa_register";
case DW_CFA_def_cfa_offset:
return "DW_CFA_def_cfa_offset";
/* SGI/MIPS specific */
case DW_CFA_MIPS_advance_loc8:
return "DW_CFA_MIPS_advance_loc8";
default:
return "DW_CFA_<unknown>";
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
#endif
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
void
dump_die (die)
struct die_info *die;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
unsigned int i;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
fprintf (stderr, "Die: %s (abbrev = %d, offset = %d)\n",
dwarf_tag_name (die->tag), die->abbrev, die->offset);
fprintf (stderr, "\thas children: %s\n",
dwarf_bool_name (die->has_children));
fprintf (stderr, "\tattributes:\n");
for (i = 0; i < die->num_attrs; ++i)
{
fprintf (stderr, "\t\t%s (%s) ",
dwarf_attr_name (die->attrs[i].name),
dwarf_form_name (die->attrs[i].form));
switch (die->attrs[i].form)
{
case DW_FORM_ref_addr:
case DW_FORM_addr:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
fprintf (stderr, "address: ");
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
print_address_numeric (DW_ADDR (&die->attrs[i]), 1, stderr);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_FORM_block2:
case DW_FORM_block4:
case DW_FORM_block:
case DW_FORM_block1:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
fprintf (stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_FORM_data1:
case DW_FORM_data2:
case DW_FORM_data4:
case DW_FORM_ref1:
case DW_FORM_ref2:
case DW_FORM_ref4:
case DW_FORM_udata:
case DW_FORM_sdata:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
fprintf (stderr, "constant: %d", DW_UNSND (&die->attrs[i]));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_FORM_string:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
fprintf (stderr, "string: \"%s\"",
DW_STRING (&die->attrs[i])
? DW_STRING (&die->attrs[i]) : "");
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
break;
case DW_FORM_flag:
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
if (DW_UNSND (&die->attrs[i]))
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
fprintf (stderr, "flag: TRUE");
else
fprintf (stderr, "flag: FALSE");
break;
case DW_FORM_strp: /* we do not support separate string
section yet */
case DW_FORM_indirect: /* we do not handle indirect yet */
case DW_FORM_data8: /* we do not have 64 bit quantities */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
default:
fprintf (stderr, "unsupported attribute form: %d.",
die->attrs[i].form);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
fprintf (stderr, "\n");
}
}
void
dump_die_list (die)
struct die_info *die;
{
while (die)
{
dump_die (die);
die = die->next;
}
}
void
store_in_ref_table (offset, die)
unsigned int offset;
struct die_info *die;
{
int h;
struct die_info *old;
h = (offset % REF_HASH_SIZE);
old = die_ref_table[h];
die->next_ref = old;
die_ref_table[h] = die;
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static void
dwarf2_empty_die_ref_table ()
{
memset (die_ref_table, 0, sizeof (die_ref_table));
}
static unsigned int
dwarf2_get_ref_die_offset (attr)
struct attribute *attr;
{
unsigned int result = 0;
switch (attr->form)
{
case DW_FORM_ref_addr:
result = DW_ADDR (attr);
break;
case DW_FORM_ref1:
case DW_FORM_ref2:
case DW_FORM_ref4:
case DW_FORM_ref_udata:
result = cu_header_offset + DW_UNSND (attr);
break;
default:
complain (&dwarf2_unsupported_die_ref_attr, dwarf_form_name (attr->form));
}
return result;
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
struct die_info *
follow_die_ref (offset)
unsigned int offset;
{
struct die_info *die;
int h;
h = (offset % REF_HASH_SIZE);
die = die_ref_table[h];
while (die)
{
if (die->offset == offset)
{
return die;
}
die = die->next_ref;
}
return NULL;
}
static struct type *
dwarf2_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
{
error ("Dwarf Error: internal error - invalid fundamental type id %d.",
typeid);
}
/* Look for this particular type in the fundamental type vector. If
one is not found, create and install one appropriate for the
current language and the current target machine. */
if (ftypes[typeid] == NULL)
{
ftypes[typeid] = cu_language_defn->la_fund_type (objfile, typeid);
}
return (ftypes[typeid]);
}
/* Decode simple location descriptions.
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
Given a pointer to a dwarf block that defines a location, compute
the location and return the value.
FIXME: This is a kludge until we figure out a better
way to handle the location descriptions.
Gdb's design does not mesh well with the DWARF2 notion of a location
computing interpreter, which is a shame because the flexibility goes unused.
FIXME: Implement more operations as necessary.
A location description containing no operations indicates that the
object is optimized out. The global optimized_out flag is set for
those, the return value is meaningless.
When the result is a register number, the global isreg flag is set,
otherwise it is cleared.
When the result is a base register offset, the global offreg flag is set
and the register number is returned in basereg, otherwise it is cleared.
When the DW_OP_fbreg operation is encountered without a corresponding
DW_AT_frame_base attribute, the global islocal flag is set.
Hopefully the machine dependent code knows how to set up a virtual
frame pointer for the local references.
Note that stack[0] is unused except as a default error return.
Note that stack overflow is not yet handled. */
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
static CORE_ADDR
decode_locdesc (blk, objfile)
struct dwarf_block *blk;
struct objfile *objfile;
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
int i;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
int size = blk->size;
char *data = blk->data;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
CORE_ADDR stack[64];
int stacki;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
unsigned int bytes_read, unsnd;
unsigned char op;
i = 0;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
stacki = 0;
stack[stacki] = 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
isreg = 0;
offreg = 0;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
islocal = 0;
optimized_out = 1;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
while (i < size)
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
optimized_out = 0;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
op = data[i++];
switch (op)
{
case DW_OP_reg0:
case DW_OP_reg1:
case DW_OP_reg2:
case DW_OP_reg3:
case DW_OP_reg4:
case DW_OP_reg5:
case DW_OP_reg6:
case DW_OP_reg7:
case DW_OP_reg8:
case DW_OP_reg9:
case DW_OP_reg10:
case DW_OP_reg11:
case DW_OP_reg12:
case DW_OP_reg13:
case DW_OP_reg14:
case DW_OP_reg15:
case DW_OP_reg16:
case DW_OP_reg17:
case DW_OP_reg18:
case DW_OP_reg19:
case DW_OP_reg20:
case DW_OP_reg21:
case DW_OP_reg22:
case DW_OP_reg23:
case DW_OP_reg24:
case DW_OP_reg25:
case DW_OP_reg26:
case DW_OP_reg27:
case DW_OP_reg28:
case DW_OP_reg29:
case DW_OP_reg30:
case DW_OP_reg31:
isreg = 1;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
stack[++stacki] = op - DW_OP_reg0;
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_OP_regx:
isreg = 1;
unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read);
i += bytes_read;
#if defined(HARRIS_TARGET) && defined(_M88K)
/* The Harris 88110 gdb ports have long kept their special reg
numbers between their gp-regs and their x-regs. This is
not how our dwarf is generated. Punt. */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
unsnd += 6;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
#endif
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
stack[++stacki] = unsnd;
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_OP_breg0:
case DW_OP_breg1:
case DW_OP_breg2:
case DW_OP_breg3:
case DW_OP_breg4:
case DW_OP_breg5:
case DW_OP_breg6:
case DW_OP_breg7:
case DW_OP_breg8:
case DW_OP_breg9:
case DW_OP_breg10:
case DW_OP_breg11:
case DW_OP_breg12:
case DW_OP_breg13:
case DW_OP_breg14:
case DW_OP_breg15:
case DW_OP_breg16:
case DW_OP_breg17:
case DW_OP_breg18:
case DW_OP_breg19:
case DW_OP_breg20:
case DW_OP_breg21:
case DW_OP_breg22:
case DW_OP_breg23:
case DW_OP_breg24:
case DW_OP_breg25:
case DW_OP_breg26:
case DW_OP_breg27:
case DW_OP_breg28:
case DW_OP_breg29:
case DW_OP_breg30:
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_OP_breg31:
offreg = 1;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
basereg = op - DW_OP_breg0;
stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read);
i += bytes_read;
break;
case DW_OP_fbreg:
stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
i += bytes_read;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
if (frame_base_reg >= 0)
{
offreg = 1;
basereg = frame_base_reg;
stack[stacki] += frame_base_offset;
}
else
{
complain (&dwarf2_missing_at_frame_base);
islocal = 1;
}
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_OP_addr:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
stack[++stacki] = read_address (objfile->obfd, &data[i]);
i += address_size;
break;
case DW_OP_const1u:
stack[++stacki] = read_1_byte (objfile->obfd, &data[i]);
i += 1;
break;
case DW_OP_const1s:
stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]);
i += 1;
break;
case DW_OP_const2u:
stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]);
i += 2;
break;
case DW_OP_const2s:
stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]);
i += 2;
break;
case DW_OP_const4u:
stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]);
i += 4;
break;
case DW_OP_const4s:
stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]);
i += 4;
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
case DW_OP_constu:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
stack[++stacki] = read_unsigned_leb128 (NULL, (data + i),
&bytes_read);
i += bytes_read;
break;
case DW_OP_consts:
stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
i += bytes_read;
break;
case DW_OP_plus:
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
stack[stacki - 1] += stack[stacki];
stacki--;
break;
* dwarf2read.c: Replace integral tag, name and form fields in internal structure definitions with the corresponding enumeration types from dwarf2.h. Add default cases to switches on enumerations where appropriate. Make quoting of string arguments in complaint messages consistent. Check for NULL returns from DW_STRING. (struct partial_die_info): Add sibling and has_type fields, remove unused value field. (DW_*): Move access macro definitions near the definition of the attribute structure. (struct field_info): New structure to pass information about fields and member functions between die processing routines. (dwarf2_build_psymtabs_hard): Set cu_header_offset. (scan_partial_symbols): Do not enter DW_TAG_subprogram dies into the partial symbol table if the DW_AT_*_pc attributes are missing. Add file scope base type definitions to the partial symbol table. Skip over child dies if the die has a sibling attribute. (add_partial_symbol): Enter global variables with type attributes and without location descriptors into the partial symbol table. Store value of DW_TAG_variable dies in the partial symbol table. Do not enter global variables into the minimal symbol table. Add base type definitions to the partial symbol table. (psymtab_to_symtab_1): Use dwarf2_get_pc_bounds to determine highpc. (process_die): Move check for DW_AT_low_pc to read_func_scope. Add a typedef symbol for base type definitions to the symbol table. Ignore DW_TAG_inlined_subroutine tags for now. (read_file_scope): Use dwarf2_get_pc_bounds to determine pc bounds. (read_func_scope, read_lexical_block_scope): Use dwarf2_get_pc_bounds to determine pc bounds, ignore dies with invalid bounds. (dwarf2_get_pc_bounds): New routine to extract and validate the DW_AT_*_pc attributes of a die. (dwarf2_add_field, dwarf2_attach_fields_to_type, skip_member_fn_name, dwarf2_add_member_fn, dwarf2_attach_fn_fields_to_type): New functions to handle fields and member functions. (read_structure_scope): Rewritten to use them. (read_array_type): Renamed from dwarf_read_array_type. Default upper array bound to describe an array with unspecified length. Create array types in backwards order, as dwarf2 puts out the array dimensions from left to right. (read_subroutine_type): Handle DW_TAG_unspecified_parameters, DW_AT_artificial and DW_AT_prototyped. (read_base_type): Make an unsigned type for DW_ATE_boolean. Pass objfile to dwarf_base_type. (read_partial_die): Use read_attribute to read in the attributes. Handle DW_AT_sibling and DW_AT_type. Follow references when determining DW_AT_name and DW_AT_external attributes of the die. Validate DW_AT_*_pc attributes. (read_full_die): Use read_attribute to read in the attributes. (read_attribute): New function to read an attribute described by an abbreviated attribute. (new_symbol): Relocate symbol value for DW_TAG_label with baseaddr. Do not set SYMBOL_VALUE_ADDRESS for DW_TAG_subprogram, SYMBOL_BLOCK_VALUE for the symbol will be set later by finish_block. Change symbol class for global variables with a zero valued location descriptor to LOC_UNRESOLVED. Handle DW_AT_const_value attributes for DW_TAG_variable, DW_TAG_formal_parameter and DW_TAG_enumerator. Build a typedef symbol for DW_TAG_base_type. (dwarf2_const_value): New routine to copy a constant value from an attribute to a symbol. (dwarf_base_type): Use passed in objfile, not current_objfile when calling dwarf2_fundamental_type. (dump_die): Use DW_* accessor macros to access values of attributes. (decode_locdesc): Handle DW_OP_plus_uconst.
1997-01-25 16:09:53 +08:00
case DW_OP_plus_uconst:
stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read);
i += bytes_read;
break;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
case DW_OP_minus:
stack[stacki - 1] = stack[stacki] - stack[stacki - 1];
stacki--;
break;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
default:
complain (&dwarf2_unsupported_stack_op, dwarf_stack_op_name(op));
return (stack[stacki]);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
}
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
return (stack[stacki]);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
/* memory allocation interface */
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
/* ARGSUSED */
static void
dwarf2_free_tmp_obstack (ignore)
PTR ignore;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
{
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
obstack_free (&dwarf2_tmp_obstack, NULL);
}
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
static struct dwarf_block *
dwarf_alloc_block ()
{
struct dwarf_block *blk;
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
blk = (struct dwarf_block *)
obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct dwarf_block));
return (blk);
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
}
static struct abbrev_info *
dwarf_alloc_abbrev ()
{
struct abbrev_info *abbrev;
Add support for Irix 6.2 native O32 and N32 ABI. * config.in, configure.in, configure: Check for <objlist.h>. * configure.tgt: Handle mips*-sgi-irix6* like irix5 for now. * cp-valprint.c (cp_print_value_fields): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member. * dwarf2read.c: Turn warnings and recoverable errors into complaints, add new complaints where appropriate. gcc -Wall cleanup. (struct line_head): Change line_base from char to int to avoid problems with compilers whose plain char is represented by an unsigned char. (struct partial_die_info): Add is_declaration field. (dwarf2_tmp_obstack): New obstack for allocating temporary storage used during symbol reading. (cu_header_offset): New variable for resolving relative reference dies. (optimized_out, basereg, islocal, frame_base_reg, frame_base_offset): New interface variables for decode_locdesc. (struct dwarf2_pinfo): New structure for communication between psymtab and symtab reading, passed via pst->read_symtab_private. (dwarf2_has_info, dwarf2_build_psymtabs): Accept objects files without line number sections. (dwarf2_build_psymtabs_hard): Initialize temporary obstack for symbol reading. Allocate and initialize pst->read_symtab_private. Relocate pst->textlow and pst->texthigh with baseaddr. (scan_partial_symbols): Do not add DW_AT_declaration symbols to the partial symbol table. Add file scope enumerator symbols to the partial symbol table. Fix typo in highpc computation. If we didn't find a lowpc, set it to highpc to avoid complaints from `maint check. (add_partial_symbol): Relocate symbol values with baseaddr. Add static DW_TAG_subprogram and DW_TAG_variable symbols to the minimal symbol table. Obtain symbol values for DW_TAG_variable symbols from the location descriptor, skip symbols with missing location desciptors. Skip symbols for aggregate types without children. Handle enumerator symbols. (dwarf2_psymtab_to_symtab): Issue symbol reading message if verbose. (psymtab_to_symtab_1): Set local variables from pst->read_symtab_private, set cu_header_offset and baseaddr. Initialize temporary obstack for symbol reading, initialize buildsym and add a cleanup to really_free_pendings. Relocate highpc with baseaddr when calling end_symtab. If the compilation is from a C file generated by language preprocessors, do not set the symtab language if it was already deduced by start_subfile. Removed verbose sorting symbol table message. (process_die): Handle DW_TAG_ptr_to_member_type and DW_TAG_reference_type. Use read_subroutine_type to get the function type for DW_TAG_subprogram before calling read_func_scope. (read_file_scope): Initialize file name to <unknown>, start_subfile expects a non-NULL name. If we didn't find a lowpc, set it to highpc to avoid complaints from finish_symbol. Relocate lowpc and highpc with baseaddr. Get rid of Irix6.2 native cc compile machine prefix in comp_dir. Zero out ftypes for each new compilation unit (may be different language or different objfile). Accept compilation units without line number information, pass comp_dir to decode_lines. (read_func_scope): Initialize function name to <unknown> to avoid core dumps when DW_AT_name is missing. Relocate lowpc and highpc with baseaddr. Handle DW_AT_frame_base, keep result for DW_OP_fbreg operations. Pass function type to new_symbol. (read_lexical_block_scope): Relocate lowpc and highpc with baseaddr. (read_structure_scope): Set TYPE_TAG_NAME, not TYPE_NAME. Handle DW_TAG_class_type. Copy fields to type_obstack, release temporary storage for fields. Don't add symbol if die is a stub die and has no children. Handle C++ static member fields. (read_enumeration): Set TYPE_TAG_NAME, not TYPE_NAME. Copy fields to type_obstack, release temporary storage for fields. Let new_symbol handle the symbol creation for enumerators instead of handcrafting a symbol. Determine signedness of enum type from enumerators. (dwarf_read_array_type): Handle variable length arrays. Use lookup_pointer_type instead of handcrafting a type. Create array type only if a DW_TAG_subrange_type was found. (read_tag_pointer_type, read_tag_reference_type): Use lookup_pointer_type and lookup_reference_type instead of handcrafting a type. (read_tag_ptr_to_member_type): New function to handle DW_TAG_ptr_to_member_type. (read_subroutine_type): Handle parameter dies. Use lookup_function_type instead of handcrafting a type. (read_typedef): Allocate a TYPE_CODE_TYPEDEF type for the typedef. (read_base_type): If the type has a name, use init_type to create a new type instead of second guessing a fundamental type. (read_comp_unit): Reset die reference table before building a new one. (dwarf2_read_section): Read section contents into psymbol_obstack. (dwarf2_read_abbrevs): Handle unterminated abbreviations for a compile unit gracefully. (read_partial_die): Zero partial die before reading its info. Handle DW_AT_declaration. Fix typo in handling of DW_FORM_block4. (read_full_die): Fix typo in handling of DW_FORM_block4. (read_1_signed_byte, read_2_signed_bytes, read_4_signed_bytes): New routines to get signed values from a buffer. (read_n_bytes, read_string): Allocate storage from the temporary obstack. If the host char size permits it, return pointer to buffer instead of allocating storage. (set_cu_language): Handle DW_LANG_Mips_Assembler. (dwarf_attr): Return NULL if reference die for DW_AT_specification or DW_AT_abstract_origin die is not found. (record_minimal_symbol): Removed, replaced with a direct call to prim_record_minimal_symbol, it now handles saving the string itself. (convert_locdesc): Removed, partial symtab reading now uses decode_locdesc. (dwarf_attr): Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (dwarf_decode_lines): Complain if the line section info is missing. Use read_1_signed_byte to extract lh.line_base to avoid problems with compilers whose plain char is represented by an unsigned char. Add cleanups for allocated temporary storage. Start a subfile for the first file in the state machine. Fix off by one problem with dirs.dirs access. Use comp_dir when directory index is 0. Support multiple sequences (from Jason Merrill <jason@cygnus.com>). (dwarf2_start_subfile): Try to keep line numbers from identical absolute and relative file names in a common subfile. (new_symbol): Allocate symbol and symbol name on the symbol_obstack. Set SYMBOL_LINE from DW_AT_decl_line if present. Set SYMBOL_TYPE from passed type if not NULL. Change DW_TAG_variable symbol types with missing type entries to a sensible type. Handle optimized_out, offreg and islocal storage classes. Add external symbols with type information whose address isn't known as LOC_UNRESOLVED symbols. Synthesize typedefs for C++ classes, structs, unions and enumerations. Handle DW_TAG_enumerator symbols, complain for unrecognized symbol tags. (die_type): A missing DW_AT_type represents a void type. Use dwarf2_get_ref_die_offset to get the absolute offset for the die reference. (die_containing_type): New function to build type from DW_AT_containing_type attribut. (read_type_die): Handle DW_TAG_ptr_to_member_type. Treat DW_TAG_subprogram like DW_TAG_subroutine_type. (dwarf_base_type): Fix typo with creation of FT_UNSIGNED_SHORT fundamental type. (create_name): Removed, symbol name allocation is now done in new_symbol. (dump_die): Use print_address_numeric to print a CORE_ADDR. (dwarf2_empty_die_ref_table): New function to clear the die reference table. (dwarf2_get_ref_die_offset): New function to get the absolute die offset from a die reference attribute. (decode_locdesc): Complete rewrite using a stack, code mostly borrowed from dwarfread.c:locval. (dwarf_alloc_type): Removed, replaced by direct calls to alloc_type. (dwarf_alloc_block): Allocate block on temporary obstack. * elfread.c (elf_symtab_read): When handling Irix dynamic symbols, skip section name symbols and relocate all others. (elf_symfile_read): Build dwarf2 psymtab even if offset is non-zero. * irix5-nat.c (fetch_core_registers): Handle core_reg_sect from N32 executables. Call registers_fetched after extracting the registers. (obj_list_variant, struct link_map, LM_OFFSET, LM_ADDR): New definitions to enable support of O32 and N32 format objlists. (struct so_list): New members offset, so_name and lmstart to eliminate dependencies from the objlist format used. (solib_map_sections, symbol_add_stub, solib_add, info_sharedlibrary_command, solib_address, clear_solib): Use so_name and LM_OFFSET. (first_link_map_member): Rewrite to enable support of O32 and N32 format objlists. (next_link_map_member, xfer_link_map_member): New functions to support O32 and N32 format objlists. (find_solib): Use first_link_map_member, next_link_map_member and xfer_link_map_member. (solib_create_inferior_hook): Use TARGET_SIGNAL_* instead of host signal numbers. * mdebugread.c (parse_partial_symbols, handle_psymbol_enumerators): Pass CORE_ADDR variant to add_psymbol_to_list. * mips-tdep.c (heuristic_proc_desc): Stop examining the prologue if we encounter a positive stack adjustment. Handle `move $30,$sp'. Handle `sd reg,offset($sp)' for 32 bit ABIs. * symmisc.c (dump_msymbols, print_partial_symbols): Use print_address_numeric to print a SYMBOL_VALUE_ADDRESS. (dump_symtab): Print compilation directory if it is not NULL. * valops.c (search_struct_field, value_struct_elt_for_reference): Use SYMBOL_VALUE_ADDRESS instead of SYMBOL_BLOCK_VALUE to get the address of a static member.
1996-12-01 16:33:39 +08:00
abbrev = (struct abbrev_info *) xmalloc (sizeof (struct abbrev_info));
* dwarf2read.c: New file, DWARF 2 reader originally contributed by Brent Benson, with additions by Gary Funck and Jerry Kreuscher. * Makefile.in (COMMON_OBS): Add dwarf2read.o. (SFILES): Add dwarf2read.c. (dwarf2read.o): Add build rule. * symfile.h (dwarf2_has_info, dwarf2_build_psymtabs): Declare exported functions. * elfread.c (elf_symfile_read): Call them. (elf_symtab_read) [HARRIS_TARGET]: Skip some special symbols.
1996-07-20 05:16:13 +08:00
memset (abbrev, 0, sizeof (struct abbrev_info));
return (abbrev);
}
static struct die_info *
dwarf_alloc_die ()
{
struct die_info *die;
die = (struct die_info *) xmalloc (sizeof (struct die_info));
memset (die, 0, sizeof (struct die_info));
return (die);
}
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