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https://sourceware.org/git/binutils-gdb.git
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208599d928
* objdump.c (load_specific_debug_section): Don't call bfd_cache_section_contents. Rearrange so that bfd_get_full_section_contents is not called on path where bfd_simple_get_relocated_section_contents is called. Don't set section->user_data. (free_debug_section): Always free section->start. Don't twiddle section flags. * readelf.c (load_specific_debug_section): Don't set user_data. * dwarf.h (struct dwarf_section): Remove use_data field. * dwarf.c (NO_ABBREVS, ABBREV): Adjust to suit.
323 lines
9.0 KiB
C
323 lines
9.0 KiB
C
/* dwarf.h - DWARF support header file
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Copyright (C) 2005-2021 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "dwarf2.h" /* for enum dwarf_unit_type */
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typedef unsigned HOST_WIDEST_INT dwarf_vma;
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typedef HOST_WIDEST_INT dwarf_signed_vma;
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typedef unsigned HOST_WIDEST_INT dwarf_size_type;
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/* Structure found in the .debug_line section. */
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typedef struct
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{
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dwarf_vma li_length;
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unsigned short li_version;
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unsigned char li_address_size;
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unsigned char li_segment_size;
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dwarf_vma li_prologue_length;
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unsigned char li_min_insn_length;
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unsigned char li_max_ops_per_insn;
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unsigned char li_default_is_stmt;
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int li_line_base;
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unsigned char li_line_range;
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unsigned char li_opcode_base;
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unsigned int li_offset_size;
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}
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DWARF2_Internal_LineInfo;
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/* Structure found in .debug_pubnames section. */
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typedef struct
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{
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dwarf_vma pn_length;
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unsigned short pn_version;
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dwarf_vma pn_offset;
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dwarf_vma pn_size;
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}
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DWARF2_Internal_PubNames;
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/* Structure found in .debug_info section. */
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typedef struct
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{
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dwarf_vma cu_length;
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unsigned short cu_version;
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dwarf_vma cu_abbrev_offset;
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unsigned char cu_pointer_size;
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enum dwarf_unit_type cu_unit_type;
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}
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DWARF2_Internal_CompUnit;
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/* Structure found in .debug_aranges section. */
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typedef struct
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{
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dwarf_vma ar_length;
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unsigned short ar_version;
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dwarf_vma ar_info_offset;
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unsigned char ar_pointer_size;
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unsigned char ar_segment_size;
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}
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DWARF2_Internal_ARange;
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/* N.B. The order here must match the order in debug_displays. */
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enum dwarf_section_display_enum
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{
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abbrev = 0,
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aranges,
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frame,
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info,
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line,
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pubnames,
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gnu_pubnames,
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eh_frame,
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macinfo,
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macro,
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str,
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line_str,
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loc,
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loclists,
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pubtypes,
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gnu_pubtypes,
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ranges,
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rnglists,
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static_func,
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static_vars,
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types,
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weaknames,
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gdb_index,
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debug_names,
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trace_info,
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trace_abbrev,
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trace_aranges,
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info_dwo,
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abbrev_dwo,
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types_dwo,
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line_dwo,
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loc_dwo,
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macro_dwo,
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macinfo_dwo,
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str_dwo,
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str_index,
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str_index_dwo,
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debug_addr,
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dwp_cu_index,
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dwp_tu_index,
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gnu_debuglink,
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gnu_debugaltlink,
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separate_debug_str,
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max
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};
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struct dwarf_section
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{
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/* A debug section has a different name when it's stored compressed
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or not. COMPRESSED_NAME and UNCOMPRESSED_NAME are the two
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possibilities. NAME is set to whichever one is used for this
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input file, as determined by load_debug_section(). */
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const char * uncompressed_name;
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const char * compressed_name;
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const char * name;
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/* If non-NULL then FILENAME is the name of the separate debug info
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file containing the section. */
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const char * filename;
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unsigned char * start;
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dwarf_vma address;
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dwarf_size_type size;
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enum dwarf_section_display_enum abbrev_sec;
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/* Used by clients to help them implement the reloc_at callback. */
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void * reloc_info;
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unsigned long num_relocs;
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};
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/* A structure containing the name of a debug section
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and a pointer to a function that can decode it. */
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struct dwarf_section_display
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{
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struct dwarf_section section;
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int (* display) (struct dwarf_section *, void *);
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int * enabled;
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bfd_boolean relocate;
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};
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extern struct dwarf_section_display debug_displays [];
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/* This structure records the information that
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we extract from the.debug_info section. */
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typedef struct
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{
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unsigned int pointer_size;
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unsigned int offset_size;
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int dwarf_version;
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dwarf_vma cu_offset;
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dwarf_vma base_address;
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/* This field is filled in when reading the attribute DW_AT_GNU_addr_base and
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is used with the form DW_FORM_GNU_addr_index. */
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dwarf_vma addr_base;
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/* This field is filled in when reading the attribute DW_AT_GNU_ranges_base and
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is used when calculating ranges. */
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dwarf_vma ranges_base;
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/* This is an array of offsets to the location list table. */
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dwarf_vma * loc_offsets;
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/* This is an array of offsets to the location view table. */
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dwarf_vma * loc_views;
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int * have_frame_base;
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unsigned int num_loc_offsets;
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unsigned int max_loc_offsets;
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unsigned int num_loc_views;
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/* List of .debug_ranges offsets seen in this .debug_info. */
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dwarf_vma * range_lists;
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unsigned int num_range_lists;
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unsigned int max_range_lists;
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}
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debug_info;
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typedef struct separate_info
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{
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void * handle; /* The pointer returned by open_debug_file(). */
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const char * filename;
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struct separate_info * next;
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} separate_info;
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extern separate_info * first_separate_info;
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extern unsigned int eh_addr_size;
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extern int do_debug_info;
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extern int do_debug_abbrevs;
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extern int do_debug_lines;
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extern int do_debug_pubnames;
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extern int do_debug_pubtypes;
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extern int do_debug_aranges;
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extern int do_debug_ranges;
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extern int do_debug_frames;
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extern int do_debug_frames_interp;
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extern int do_debug_macinfo;
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extern int do_debug_str;
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extern int do_debug_str_offsets;
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extern int do_debug_loc;
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extern int do_gdb_index;
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extern int do_trace_info;
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extern int do_trace_abbrevs;
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extern int do_trace_aranges;
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extern int do_debug_addr;
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extern int do_debug_cu_index;
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extern int do_wide;
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extern int do_debug_links;
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extern int do_follow_links;
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extern bfd_boolean do_checks;
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extern int dwarf_cutoff_level;
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extern unsigned long dwarf_start_die;
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extern int dwarf_check;
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extern void init_dwarf_regnames_by_elf_machine_code (unsigned int);
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extern void init_dwarf_regnames_by_bfd_arch_and_mach (enum bfd_architecture arch,
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unsigned long mach);
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extern bfd_boolean load_debug_section (enum dwarf_section_display_enum, void *);
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extern void free_debug_section (enum dwarf_section_display_enum);
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extern bfd_boolean load_separate_debug_files (void *, const char *);
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extern void close_debug_file (void *);
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extern void * open_debug_file (const char *);
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extern void free_debug_memory (void);
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extern void dwarf_select_sections_by_names (const char *);
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extern void dwarf_select_sections_by_letters (const char *);
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extern void dwarf_select_sections_all (void);
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extern unsigned int * find_cu_tu_set (void *, unsigned int);
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extern void * cmalloc (size_t, size_t);
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extern void * xcalloc2 (size_t, size_t);
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extern void * xcmalloc (size_t, size_t);
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extern void * xcrealloc (void *, size_t, size_t);
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/* A callback into the client. Returns TRUE if there is a
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relocation against the given debug section at the given
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offset. */
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extern bfd_boolean reloc_at (struct dwarf_section *, dwarf_vma);
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extern dwarf_vma read_leb128 (unsigned char *, const unsigned char *const,
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bfd_boolean, unsigned int *, int *);
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#if HAVE_LIBDEBUGINFOD
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extern unsigned char * get_build_id (void *);
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#endif
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static inline void
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report_leb_status (int status, const char *file, unsigned long lnum)
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{
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if ((status & 1) != 0)
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error (_("%s:%lu: end of data encountered whilst reading LEB\n"), file, lnum);
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else if ((status & 2) != 0)
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error (_("%s:%lu: read LEB value is too large to store in destination variable\n"), file, lnum);
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}
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#define SKIP_ULEB(start, end) \
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do \
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{ \
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unsigned int _len; \
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read_leb128 (start, end, FALSE, &_len, NULL); \
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start += _len; \
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} \
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while (0)
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#define SKIP_SLEB(start, end) \
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do \
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{ \
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unsigned int _len; \
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read_leb128 (start, end, TRUE, &_len, NULL); \
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start += _len; \
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} \
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while (0)
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#define READ_ULEB(var, start, end) \
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do \
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{ \
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dwarf_vma _val; \
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unsigned int _len; \
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int _status; \
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\
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_val = read_leb128 (start, end, FALSE, &_len, &_status); \
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start += _len; \
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(var) = _val; \
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if ((var) != _val) \
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_status |= 2; \
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report_leb_status (_status, __FILE__, __LINE__); \
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} \
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while (0)
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#define READ_SLEB(var, start, end) \
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do \
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{ \
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dwarf_signed_vma _val; \
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unsigned int _len; \
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int _status; \
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\
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_val = read_leb128 (start, end, TRUE, &_len, &_status); \
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start += _len; \
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(var) = _val; \
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if ((var) != _val) \
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_status |= 2; \
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report_leb_status (_status, __FILE__, __LINE__); \
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} \
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while (0)
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