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https://sourceware.org/git/binutils-gdb.git
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26c527e62e
The aim here is to improve readelf handling of large 64-bit object files on LLP64 hosts (Windows) where long is only 32 bits. The patch changes more than just file offsets. Addresses and sizes are also changed to avoid "long". Most places get to use uint64_t even where size_t may be more appropriate, because that allows some overflow checks to be implemented easily (*alloc changes). * dwarf.c (cmalloc, xcmalloc, xcrealloc, xcalloc2): Make nmemb parameter uint64_t. * dwarf.h: Update prototypes. (struct dwarf_section): Make num_relocs uint64_t. * elfcomm.c (setup_archive): Update error format. * elfcomm.h (struct archive_info): Make sym_size, longnames_size, nested_member_origin, next_arhdr_offset uint64_t. * readelf.c (struct filedata): Make archive_file_offset, archive_file_size, string_table_length, dynamic_addr, dynamic_nent, dynamic_strings_length, num_dynamic_syms, dynamic_syminfo_offset uint64_t. (many functions): Replace uses of "unsigned long" with "uint64_t" or "size_t".
334 lines
9.0 KiB
C
334 lines
9.0 KiB
C
/* dwarf.h - DWARF support header file
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Copyright (C) 2005-2022 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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/* Structure found in the .debug_line section. */
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typedef struct
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{
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uint64_t 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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uint64_t 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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uint64_t pn_length;
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unsigned short pn_version;
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uint64_t pn_offset;
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uint64_t 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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uint64_t cu_length;
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unsigned short cu_version;
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uint64_t 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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uint64_t ar_length;
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unsigned short ar_version;
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uint64_t 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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loclists_dwo,
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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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rnglists_dwo,
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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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debug_sup,
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separate_debug_str,
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note_gnu_build_id,
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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. XCOFF DWARF section also have a special name.
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COMPRESSED_NAME, UNCOMPRESSED_NAME and XCOFF_NAME are the three
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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 * xcoff_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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uint64_t address;
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uint64_t 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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uint64_t 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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bool 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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uint64_t cu_offset;
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uint64_t 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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uint64_t 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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uint64_t ranges_base;
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/* This is an array of offsets to the location list table. */
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uint64_t * loc_offsets;
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/* This is an array of offsets to the location view table. */
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uint64_t * loc_views;
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int * have_frame_base;
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/* Information for associating location lists with CUs. */
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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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uint64_t loclists_base;
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/* List of .debug_ranges offsets seen in this .debug_info. */
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uint64_t * range_lists;
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unsigned int num_range_lists;
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unsigned int max_range_lists;
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uint64_t rnglists_base;
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uint64_t str_offsets_base;
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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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#ifdef HAVE_LIBDEBUGINFOD
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extern int use_debuginfod;
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#endif
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extern bool 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 bool 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 bool 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 int dwarf_select_sections_by_names (const char *);
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extern int 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 (uint64_t, size_t);
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extern void * xcalloc2 (uint64_t, size_t);
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extern void * xcmalloc (uint64_t, size_t);
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extern void * xcrealloc (void *, uint64_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 bool reloc_at (struct dwarf_section *, uint64_t);
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extern uint64_t read_leb128 (unsigned char *, const unsigned char *const,
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bool, 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)
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{
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if ((status & 1) != 0)
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error (_("end of data encountered whilst reading LEB\n"));
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else if ((status & 2) != 0)
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error (_("read LEB value is too large to store in destination variable\n"));
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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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uint64_t _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); \
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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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int64_t _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); \
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} \
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while (0)
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