binutils-gdb/gdb/symfile.h

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/* Definitions for reading symbol files into GDB.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2001, 2002, 2003
Free Software Foundation, Inc.
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This file is part of GDB.
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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.
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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.
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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. */
#if !defined (SYMFILE_H)
#define SYMFILE_H
/* This file requires that you first include "bfd.h". */
/* Opaque declarations. */
struct objfile;
struct obstack;
2003-02-19 David Carlton <carlton@math.stanford.edu> * Makefile.in (SFILES): Add block.c. (block_h): New. (COMMON_OBS): Add block.o. (block.o): New. (x86-64-tdep.o): Add $(block_h). (values.o, valops.o, tracepoint.o, symtab.o, symmisc.o, symfile.o) (stack.o, printcmd.o, p-exp.tab.o, parse.o, objfiles.o) (objc-exp.tab.o, objc-lang.o, nlmread.o, mips-tdep.o, mdebugread.o) (m2-exp.tab.o, linespec.o, jv-lang.o, jv-exp.tab.o, infcmd.o) (f-valprint.o, findvar.o, f-exp.tab.o, expprint.o, coffread.o) (c-exp.tab.o, buildsym.o, breakpoint.o, blockframe.o, ax-gdb.o) (alpha-tdep.o, ada-lang.o, ada-exp.tab.o, mi-cmd-stack.o): Ditto. * value.h: Add opaque declaration for struct block. * parser-defs.h, objc-lang.h, buildsym.h, breakpoint.h: Ditto. * ada-lang.h: Ditto. * x86-64-tdep.c: #include "block.h" * values.c, valops.c, tracepoint.c, symtab.c, symmisc.c: Ditto. * symfile.c, stack.c, printcmd.c, p-exp.y, parse.c: Ditto. * objfiles.c, objc-exp.y, objc-lang.c, nlmread.c: Ditto. * mips-tdep.c, mdebugread.c, m2-exp.y, linespec.c: Ditto. * jv-lang.c, jv-exp.y, infcmd.c, f-valprint.c: Ditto. * findvar.c, f-exp.y, expprint.c, coffread.c, c-exp.y: Ditto. * buildsym.c, breakpoint.c, blockframe.c, ax-gdb.c: Ditto. * alpha-tdep.c, ada-lang.c, ada-exp.y: Ditto. * blockframe.c (blockvector_for_pc_sect): Move to "block.c". (blockvector_for_pc, block_for_pc_sect, block_for_pc): Ditto. * symtab.c (block_function): Ditto. (contained_in): Ditto. * frame.h: Move block_for_pc and block_for_pc_sect declarations to block.h. Add opaque declaration for struct block. * symtab.h: Move block_function and contained_in declarations to block.h. Add opaque declarations for struct block, struct blockvector. (struct block): Move to block.h. (struct blockvector): Ditto. (BLOCK_START, BLOCK_END, BLOCK_FUNCTION, BLOCK_SUPERBLOCK) (BLOCK_GCC_COMPILED, BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM) (BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE) (ALL_BLOCK_SYMBOLS, BLOCK_SHOULD_SORT, BLOCKVECTOR_NBLOCKS) (BLOCKVECTOR_BLOCK, GLOBAL_BLOCK, STATIC_BLOCK, FIRST_LOCAL_BLOCK): Ditto. * block.c: New file. * block.h: New file. 2003-02-19 David Carlton <carlton@math.stanford.edu> * mi-cmd-stack.c: #include "block.h"
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struct block;
/* Partial symbols are stored in the psymbol_cache and pointers to them
are kept in a dynamically grown array that is obtained from malloc and
grown as necessary via realloc. Each objfile typically has two of these,
one for global symbols and one for static symbols. Although this adds
a level of indirection for storing or accessing the partial symbols,
it allows us to throw away duplicate psymbols and set all pointers
to the single saved instance. */
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struct psymbol_allocation_list
{
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/* Pointer to beginning of dynamically allocated array of pointers to
partial symbols. The array is dynamically expanded as necessary to
accommodate more pointers. */
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struct partial_symbol **list;
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/* Pointer to next available slot in which to store a pointer to a partial
symbol. */
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struct partial_symbol **next;
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/* Number of allocated pointer slots in current dynamic array (not the
number of bytes of storage). The "next" pointer will always point
somewhere between list[0] and list[size], and when at list[size] the
array will be expanded on the next attempt to store a pointer. */
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int size;
};
/* Define an array of addresses to accommodate non-contiguous dynamic
loading of modules. This is for use when entering commands, so we
can keep track of the section names until we read the file and
can map them to bfd sections. This structure is also used by
solib.c to communicate the section addresses in shared objects to
symbol_file_add (). */
#define MAX_SECTIONS 64
struct section_addr_info
{
/* Sections whose names are file format dependent. */
struct other_sections
{
CORE_ADDR addr;
char *name;
int sectindex;
} other[MAX_SECTIONS];
};
/* Structure to keep track of symbol reading functions for various
object file types. */
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struct sym_fns
{
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/* BFD flavour that we handle, or (as a special kludge, see xcoffread.c,
(enum bfd_flavour)-1 for xcoff). */
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enum bfd_flavour sym_flavour;
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/* Initializes anything that is global to the entire symbol table. It is
called during symbol_file_add, when we begin debugging an entirely new
program. */
void (*sym_new_init) (struct objfile *);
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/* Reads any initial information from a symbol file, and initializes the
struct sym_fns SF in preparation for sym_read(). It is called every
time we read a symbol file for any reason. */
void (*sym_init) (struct objfile *);
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/* sym_read (objfile, mainline)
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Reads a symbol file into a psymtab (or possibly a symtab).
OBJFILE is the objfile struct for the file we are reading.
MAINLINE is 1 if this is the
main symbol table being read, and 0 if a secondary
symbol file (e.g. shared library or dynamically loaded file)
is being read. */
void (*sym_read) (struct objfile *, int);
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/* Called when we are finished with an objfile. Should do all cleanup
that is specific to the object file format for the particular objfile. */
void (*sym_finish) (struct objfile *);
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/* This function produces a file-dependent section_offsets structure,
allocated in the objfile's storage, and based on the parameter.
The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility
with the higher levels of GDB. It should probably be changed to
a string, where NULL means the default, and others are parsed in a file
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dependent way. */
void (*sym_offsets) (struct objfile *, struct section_addr_info *);
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/* Finds the next struct sym_fns. They are allocated and initialized
in whatever module implements the functions pointed to; an
initializer calls add_symtab_fns to add them to the global chain. */
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struct sym_fns *next;
};
/* The default version of sym_fns.sym_offsets for readers that don't
do anything special. */
extern void default_symfile_offsets (struct objfile *objfile,
struct section_addr_info *);
extern void extend_psymbol_list (struct psymbol_allocation_list *,
struct objfile *);
/* Add any kind of symbol to a psymbol_allocation_list. */
/* #include "demangle.h" */
extern void
add_psymbol_to_list (char *, int, domain_enum, enum address_class,
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struct psymbol_allocation_list *, long, CORE_ADDR,
enum language, struct objfile *);
extern void
add_psymbol_with_dem_name_to_list (char *, int, char *, int, domain_enum,
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enum address_class,
struct psymbol_allocation_list *,
long, CORE_ADDR,
enum language, struct objfile *);
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extern void init_psymbol_list (struct objfile *, int);
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extern void sort_pst_symbols (struct partial_symtab *);
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extern struct symtab *allocate_symtab (char *, struct objfile *);
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extern int free_named_symtabs (char *);
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extern void fill_in_vptr_fieldno (struct type *);
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extern void add_symtab_fns (struct sym_fns *);
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extern void init_entry_point_info (struct objfile *);
extern void syms_from_objfile (struct objfile *,
struct section_addr_info *,
struct section_offsets *, int,
int, int);
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extern void new_symfile_objfile (struct objfile *, int, int);
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extern struct objfile *symbol_file_add (char *, int,
struct section_addr_info *, int, int);
/* Build (allocate and populate) a section_addr_info struct from
an existing section table. */
struct section_table;
extern struct section_addr_info *
build_section_addr_info_from_section_table (const struct section_table *start,
const struct section_table *end);
/* Free all memory allocated by build_section_addr_info_from_section_table. */
extern void free_section_addr_info (struct section_addr_info *);
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extern struct partial_symtab *start_psymtab_common (struct objfile *,
struct section_offsets *,
char *, CORE_ADDR,
struct partial_symbol **,
struct partial_symbol **);
/* Sorting your symbols for fast lookup or alphabetical printing. */
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extern void sort_block_syms (struct block *);
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extern void sort_symtab_syms (struct symtab *);
/* Make a copy of the string at PTR with SIZE characters in the symbol obstack
(and add a null character at the end in the copy).
Returns the address of the copy. */
extern char *obsavestring (const char *, int, struct obstack *);
/* Concatenate strings S1, S2 and S3; return the new string.
Space is found in the symbol_obstack. */
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extern char *obconcat (struct obstack *obstackp, const char *, const char *,
const char *);
/* Variables */
Changes approved by kev@cygnus.com, ezannoni@cygnus.com, eliz@is.elta.co.il. Changelog: 2001-10-27 Fred Fish <fnf@redhat.com> * symfile.c (auto_solib_add): Update comment to note that this variable is now just used as a boolean to control shlib autoloading, and clarify when it is used. * symfile.h (auto_solib_add): Ditto. * symfile.c (auto_solib_limit): New variable that holds the autoloading threshold instead of overloading auto_solib_add. * symfile.h (auto_solib_limit): Ditto. * irix5-nat.c (_initialize_solib): Change auto-solib-add variable from var_zinteger to var_boolean and update help. * osfsolib.c (_initialize_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Ditto. * solib.c (_initialize_solib): Ditto. * somsolib.c (_initialize_som_solib): Ditto. * xcoffsolib.c (_initialize_solib): Ditto. * pa64solib.c (pa64_solib_total_st_size): Update comment to note that the new auto_solib_limit variable is used instead of overloading auto_solib_add variable. (_initialize_pa64_solib): Ditto. * somsolib.c (som_solib_total_st_size): Ditto. (_initialize_som_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Add new set/show commands for auto-solib-limit variable. * somsolib.c (_initialize_som_solib): Ditto * pa64solib.c (add_to_solist): Check that auto_solib_add is set and use auto_solib_limit as the threshold size instead of auto_solib_add. * somsolib.c (som_solib_add): Ditto, and also change warning text about size threshold exceeded. doc/ChangeLog: 2001-10-28 Fred Fish <fnf@redhat.com> * gdb.texinfo (auto-solib-add): Change docs to match implementation change. (auto-solib-limit): Add docs for new variable.
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/* If non-zero, shared library symbols will be added automatically
when the inferior is created, new libraries are loaded, or when
attaching to the inferior. This is almost always what users will
want to have happen; but for very large programs, the startup time
will be excessive, and so if this is a problem, the user can clear
this flag and then add the shared library symbols as needed. Note
that there is a potential for confusion, since if the shared
library symbols are not loaded, commands like "info fun" will *not*
report all the functions that are actually present. */
Changes approved by kev@cygnus.com, ezannoni@cygnus.com, eliz@is.elta.co.il. Changelog: 2001-10-27 Fred Fish <fnf@redhat.com> * symfile.c (auto_solib_add): Update comment to note that this variable is now just used as a boolean to control shlib autoloading, and clarify when it is used. * symfile.h (auto_solib_add): Ditto. * symfile.c (auto_solib_limit): New variable that holds the autoloading threshold instead of overloading auto_solib_add. * symfile.h (auto_solib_limit): Ditto. * irix5-nat.c (_initialize_solib): Change auto-solib-add variable from var_zinteger to var_boolean and update help. * osfsolib.c (_initialize_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Ditto. * solib.c (_initialize_solib): Ditto. * somsolib.c (_initialize_som_solib): Ditto. * xcoffsolib.c (_initialize_solib): Ditto. * pa64solib.c (pa64_solib_total_st_size): Update comment to note that the new auto_solib_limit variable is used instead of overloading auto_solib_add variable. (_initialize_pa64_solib): Ditto. * somsolib.c (som_solib_total_st_size): Ditto. (_initialize_som_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Add new set/show commands for auto-solib-limit variable. * somsolib.c (_initialize_som_solib): Ditto * pa64solib.c (add_to_solist): Check that auto_solib_add is set and use auto_solib_limit as the threshold size instead of auto_solib_add. * somsolib.c (som_solib_add): Ditto, and also change warning text about size threshold exceeded. doc/ChangeLog: 2001-10-28 Fred Fish <fnf@redhat.com> * gdb.texinfo (auto-solib-add): Change docs to match implementation change. (auto-solib-limit): Add docs for new variable.
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extern int auto_solib_add;
Changes approved by kev@cygnus.com, ezannoni@cygnus.com, eliz@is.elta.co.il. Changelog: 2001-10-27 Fred Fish <fnf@redhat.com> * symfile.c (auto_solib_add): Update comment to note that this variable is now just used as a boolean to control shlib autoloading, and clarify when it is used. * symfile.h (auto_solib_add): Ditto. * symfile.c (auto_solib_limit): New variable that holds the autoloading threshold instead of overloading auto_solib_add. * symfile.h (auto_solib_limit): Ditto. * irix5-nat.c (_initialize_solib): Change auto-solib-add variable from var_zinteger to var_boolean and update help. * osfsolib.c (_initialize_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Ditto. * solib.c (_initialize_solib): Ditto. * somsolib.c (_initialize_som_solib): Ditto. * xcoffsolib.c (_initialize_solib): Ditto. * pa64solib.c (pa64_solib_total_st_size): Update comment to note that the new auto_solib_limit variable is used instead of overloading auto_solib_add variable. (_initialize_pa64_solib): Ditto. * somsolib.c (som_solib_total_st_size): Ditto. (_initialize_som_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Add new set/show commands for auto-solib-limit variable. * somsolib.c (_initialize_som_solib): Ditto * pa64solib.c (add_to_solist): Check that auto_solib_add is set and use auto_solib_limit as the threshold size instead of auto_solib_add. * somsolib.c (som_solib_add): Ditto, and also change warning text about size threshold exceeded. doc/ChangeLog: 2001-10-28 Fred Fish <fnf@redhat.com> * gdb.texinfo (auto-solib-add): Change docs to match implementation change. (auto-solib-limit): Add docs for new variable.
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/* For systems that support it, a threshold size in megabytes. If
automatically adding a new library's symbol table to those already
known to the debugger would cause the total shared library symbol
size to exceed this threshhold, then the shlib's symbols are not
added. The threshold is ignored if the user explicitly asks for a
shlib to be added, such as when using the "sharedlibrary"
command. */
Changes approved by kev@cygnus.com, ezannoni@cygnus.com, eliz@is.elta.co.il. Changelog: 2001-10-27 Fred Fish <fnf@redhat.com> * symfile.c (auto_solib_add): Update comment to note that this variable is now just used as a boolean to control shlib autoloading, and clarify when it is used. * symfile.h (auto_solib_add): Ditto. * symfile.c (auto_solib_limit): New variable that holds the autoloading threshold instead of overloading auto_solib_add. * symfile.h (auto_solib_limit): Ditto. * irix5-nat.c (_initialize_solib): Change auto-solib-add variable from var_zinteger to var_boolean and update help. * osfsolib.c (_initialize_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Ditto. * solib.c (_initialize_solib): Ditto. * somsolib.c (_initialize_som_solib): Ditto. * xcoffsolib.c (_initialize_solib): Ditto. * pa64solib.c (pa64_solib_total_st_size): Update comment to note that the new auto_solib_limit variable is used instead of overloading auto_solib_add variable. (_initialize_pa64_solib): Ditto. * somsolib.c (som_solib_total_st_size): Ditto. (_initialize_som_solib): Ditto. * pa64solib.c (_initialize_pa64_solib): Add new set/show commands for auto-solib-limit variable. * somsolib.c (_initialize_som_solib): Ditto * pa64solib.c (add_to_solist): Check that auto_solib_add is set and use auto_solib_limit as the threshold size instead of auto_solib_add. * somsolib.c (som_solib_add): Ditto, and also change warning text about size threshold exceeded. doc/ChangeLog: 2001-10-28 Fred Fish <fnf@redhat.com> * gdb.texinfo (auto-solib-add): Change docs to match implementation change. (auto-solib-limit): Add docs for new variable.
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extern int auto_solib_limit;
/* From symfile.c */
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extern CORE_ADDR entry_point_address (void);
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extern struct partial_symtab *allocate_psymtab (char *, struct objfile *);
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extern void discard_psymtab (struct partial_symtab *);
extern void find_lowest_section (bfd *, asection *, void *);
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extern bfd *symfile_bfd_open (char *);
extern int get_section_index (struct objfile *, char *);
/* Utility functions for overlay sections: */
extern enum overlay_debugging_state {
ovly_off,
ovly_on,
ovly_auto
} overlay_debugging;
extern int overlay_cache_invalid;
/* return the "mapped" overlay section containing the PC */
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extern asection *find_pc_mapped_section (CORE_ADDR);
/* return any overlay section containing the PC (even in its LMA region) */
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extern asection *find_pc_overlay (CORE_ADDR);
/* return true if the section is an overlay */
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extern int section_is_overlay (asection *);
/* return true if the overlay section is currently "mapped" */
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extern int section_is_mapped (asection *);
/* return true if pc belongs to section's VMA */
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extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, asection *);
/* return true if pc belongs to section's LMA */
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extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, asection *);
/* map an address from a section's LMA to its VMA */
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extern CORE_ADDR overlay_mapped_address (CORE_ADDR, asection *);
/* map an address from a section's VMA to its LMA */
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extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, asection *);
/* convert an address in an overlay section (force into VMA range) */
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extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *);
2001-01-26 Fernando Nasser <fnasser@redhat.com> Fix double parsing of filenames passed as command line arguments to GDB (causes weird handling of escape characters). Also, remove dependencies on the CLI from libgdb. * call-cmds.h: Remove declaration of exec_file_command(). * gdbcore.h: Remove declaration of exec_file_command(). Add declarations for exec_open() and exec_file_clear(). * symfile.h: Add declarations for symbol_file_add_main() and symbol_file_clear(). * exec.c (exec_open): New function. Implements to_open for exec targets. (exec_file_clear): New function. Makes GDB forget about a previously specified executable file. (exec_file_attach): Move parsing of arguments from here ... (exec_file_command): ... to here. (init_exec_ops): Use exec_open(), not exec_file_command() to implement to_open for exec targets. * symfile.c (symbol_file_add_main): New function. Call symbol_file_add() with default values. Used when the file name has already been parsed. (symbol_file_clear): New function. Makes GDB forget about previously read symbols. (symbol_file_command): Call the above function instead of inline code. * main.c: Include "symfile.h" and "gdbcore.h" instead of the deprecated "call-cmds.h". (captured_main): Call exec_file_attach() and symbol_file_add_main() instead of exec_file_command() and symbol_file_command(). (captured_main): Add comment. * corefile.c: Include "symfile.h". (core_file_command): Call symbol_file_add_main() instead of symbol_file_command(). (reopen_exec_file): Call exec_open() instead of exec_file_command(). * infcmd.c: Include "symfile.h". (attach_command): Call symbol_file_add_main() instead of symbol_file_command(). * infrun.c: Remove comment about the inclusion of "symfile.h", not any longer appropriate. (follow_exec): Call symbol_file_add_main() instead of symbol_file_command(). * remote-es.c: Include "symfile.h". (es1800_load): Call symbol_file_add_main() instead of symbol_file_command(). * remote-vx.c: Remove comment about the inclusion of "symfile.h", not any longer appropriate. (vx-wait): Call symbol_file_add_main() instead of symbol_file_command(). * solib-svr4.c (open_symbol_file_object): Call symbol_file_add_main() instead of symbol_file_command(). * v850ice.c (ice_file): Call exec_open(), exec_file_attach() and symbol_file_add_main() instead of exec_file_command() and symbol_file_command(). * Makefile.in: Update dependencies.
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/* Load symbols from a file. */
extern void symbol_file_add_main (char *args, int from_tty);
/* Clear GDB symbol tables. */
extern void symbol_file_clear (int from_tty);
extern bfd_byte *symfile_relocate_debug_section (bfd *abfd, asection *sectp,
bfd_byte *buf);
/* From dwarfread.c */
extern void
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dwarf_build_psymtabs (struct objfile *, int, file_ptr, unsigned int,
file_ptr, unsigned int);
/* From dwarf2read.c */
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extern int dwarf2_has_info (bfd * abfd);
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extern void dwarf2_build_psymtabs (struct objfile *, int);
extern void dwarf2_build_frame_info (struct objfile *);
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/* From mdebugread.c */
/* Hack to force structures to exist before use in parameter list. */
struct ecoff_debug_hack
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{
struct ecoff_debug_swap *a;
struct ecoff_debug_info *b;
};
extern void
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mdebug_build_psymtabs (struct objfile *,
const struct ecoff_debug_swap *,
struct ecoff_debug_info *);
extern void
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elfmdebug_build_psymtabs (struct objfile *,
const struct ecoff_debug_swap *, asection *);
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#endif /* !defined(SYMFILE_H) */