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2022-07-05Support for location and range lists for split-dwarf and dwarf-5.Bhuvanendra Kumar N1-0/+2
Adding support for location and range lists for split-dwarf and dwarf-5. Following issues are taken care. 1. Display of the index values for DW_FORM_loclistx and DW_FORM_rnglistx. 2. Display of .debug_loclists.dwo and .debug_rnglists.dwo sections. * dwarf.c(read_and_display_attr_value): Handle DW_FORM_loclistx and DW_FORM_rnglistx for .dwo files. (process_debug_info): Load .debug_loclists.dwo and .debug_rnglists.dwo if exists. (load_separate_debug_files): Load .debug_loclists and .debug_rnglists if exists. Include 2 entries in debug_displays table. * dwarf.h (enum dwarf_section_display_enum): Include 2 entries.
2022-06-22Binutils support for split-dwarf and dwarf-5Kumar N, Bhuvanendra1-0/+1
* dwarf.c (fetch_indexed_string): Added new parameter str_offsets_base to calculate the string offset. (read_and_display_attr_value): Read DW_AT_str_offsets_base attribute. (process_debug_info): While allocating memory and initializing debug_information, do it for do_debug_info also, if its true. (load_separate_debug_files): Load .debug_str_offsets if exists. * dwarf.h (struct debug_info): Add str_offsets_base field.
2022-06-21Binutils support for dwarf-5 (location and range lists related)Nick Clifton1-0/+1
* dwarf.h (struct debug_info): Add rnglists_base field. * dwarf.c (read_and_display_attr_value): Read attribute DW_AT_rnglists_base. (display_debug_rnglists_list): While handling DW_RLE_base_addressx, DW_RLE_startx_endx, DW_RLE_startx_length items, pass the proper parameter value to fetch_indexed_addr(), i.e. fetch the proper entry in .debug_addr section. (display_debug_ranges): Add rnglists_base to the .debug_rnglists base address. (load_separate_debug_files): Load .debug_addr section, if exists.
2022-05-20Stop readekf and objdump from aggressively following links.Nick Clifton1-2/+2
* dwarf.c (dwarf_select_sections_by_names): Return zero if no sections were selected. (dwarf_select_sections_by_letters): Likewise. * dwarf.h: (dwarf_select_sections_by_names): Update prototype. (dwarf_select_sections_by_letters): Update prototype. * objdump.c (might_need_separate_debug_info): New function. (dump_bfd): Call new function before attempting to load separate debug info files. (main): Do not enable dwarf section dumping for -WK or -WN. * readelf.c (parse_args): Do not enable dwarf section dumping for -wK or -wN. (might_need_separate_debug_info): New function. (process_object): Call new function before attempting to load separate debug info files. * testsuite/binutils-all/debuginfo.exp: Expect -WE and -wE debuginfod tests to pass. * testsuite/binutils-all/objdump.Wk: Add extra regexps. * testsuite/binutils-all/readelf.k: Add extra regexps.
2022-04-06Add code to display the contents of .debug_loclists sections which contain ↵Nick Clifton1-0/+4
offset entry tables. PR 28981 * dwarf.c (fetch_indexed_value): Rename to fecth_indexed_addr and return the address, rather than a string. (fetch_indexed_value): New function - returns a value indexed by a DW_FORM_loclistx or DW_FORM_rnglistx form. (read_and_display_attr_value): Add support for DW_FORM_loclistx and DW_FORM_rnglistx. (process_debug_info): Load the loclists and rnglists sections. (display_loclists_list): Add support for DW_LLE_base_addressx, DW_LLE_startx_endx, DW_LLE_startx_length and DW_LLE_default_location. (display_offset_entry_loclists): New function. Displays a .debug_loclists section that contains offset entry tables. (display_debug_loc): Call the new function. (display_debug_rnglists_list): Add support for DW_RLE_base_addressx, DW_RLE_startx_endx and DW_RLE_startx_length. (display_debug_ranges): Display the contents of the section's header. * dwarf.h (struct debug_info): Add loclists_base field. * testsuite/binutils-all/dw5.W: Update expected output. * testsuite/binutils-all/x86-64/pr26808.dump: Likewise.
2022-03-10Add option to objdump/readelf to disable access to debuginfod servers.Nick Clifton1-0/+3
* dwarf.c (use_debuginfod): New variable. Set to 1. (load_separate_debug_info): Only call debuginfod_fetch_separate_debug_info is use_debuginfod is true. (dwarf_select_sections_by_names): Add do-not-use-debuginfod and use-debuginfod options. (dwarf_select_sections_by_letters): Add D and E options. * dwarf.h (use_debuginfod): New extern. * objdump.c (usage): Mention the new options. * readelf.c (usage): Likewise. * doc/binutils.texi: Document the new options. * doc/debug-options.texi: Describe the new options. * NEWS: Mention the new feature. * testsuite/binutils-all/debuginfod.exp: Add tests of the new options.
2022-01-02Update year range in copyright notice of binutils filesAlan Modra1-1/+1
The result of running etc/update-copyright.py --this-year, fixing all the files whose mode is changed by the script, plus a build with --enable-maintainer-mode --enable-cgen-maint=yes, then checking out */po/*.pot which we don't update frequently. The copy of cgen was with commit d1dd5fcc38ead reverted as that commit breaks building of bfp opcodes files.
2021-12-16When loading separate debug info files, also attempt to locate a file based ↵Nick Clifton1-0/+1
upon the build-id. PR 28697 * dwarf.c (load_build_id_debug_file): New function. (try_build_id_prefix): New function. (check_for_and_load_links): Call load_build_id_debug_file. (debug_displays): Add entry for .note.gnu.build-id. * dwarf.h (enum dwarf_section_display_enum): Add note_gnu_build_id. * testsuite/binutils-all/debuginfod.exp (test_fetch_debuglink): Fix regexp for loads via debuglink section.
2021-07-14objdump: add DWARF support for AIXClément Chigot1-1/+3
DWARF sections have special names on AIX which need be handled by objdump in order to correctly print them. This patch also adds the correlation in bfd for future uses. bfd/ * libxcoff.h (struct xcoff_dwsect_name): Add DWARF name. * coff-rs6000.c (xcoff_dwsect_names): Update. * coffcode.h (sec_to_styp_flags): Likewise. (coff_new_section_hook): Likewise. binutils/ * dwarf.h (struct dwarf_section): Add XCOFF name. * dwarf.c (struct dwarf_section_display): Update. * objdump.c (load_debug_section): Add XCOFF name handler. (dump_dwarf_section): Likewise. gas/ * config/tc-ppc.c (ppc_change_debug_section): Update to match new name's field.
2021-07-10PR28069, assertion fail in dwarf.c:display_discr_listAlan Modra1-5/+5
We shouldn't be asserting on anything to do with leb128 values, or reporting file and line numbers when something unexpected happens. leb128 data is of indeterminate length, perfect for fuzzer mayhem. It would only make sense to assert or report dwarf.c/readelf.c source lines if the code had already sized and sanity checked the leb128 values. After removing the assertions, the testcase then gave: <37> DW_AT_discr_list : 5 byte block: 0 0 0 0 0 (label 0, label 0, label 0, label 0, <corrupt> readelf: Warning: corrupt discr_list - unrecognized discriminant byte 0x5 <3d> DW_AT_encoding : 0 (void) <3e> DW_AT_identifier_case: 0 (case_sensitive) <3f> DW_AT_virtuality : 0 (none) <40> DW_AT_decimal_sign: 5 (trailing separate) So the DW_AT_discr_list was showing more data than just the 5 byte block. That happened due to "end" pointing a long way past the end of block, and uvalue decrementing past zero on one of the leb128 bytes. PR 28069 * dwarf.c (display_discr_list): Remove assertions. Delete "end" parameter, use initial "data" pointer as the end. Formatting. Don't count down bytes as they are read. (read_and_display_attr_value): Adjust display_discr_list call. (read_and_print_leb128): Don't pass __FILE__ and __LINE__ to report_leb_status. * dwarf.h (report_leb_status): Don't report file and line numbers. Delete file and lnum parameters, (READ_ULEB, READ_SLEB): Adjust.
2021-03-31Use bool in binutilsAlan Modra1-16/+16
* sysdep.h (POISON_BFD_BOOLEAN): Define. * addr2line.c, * ar.c, * arsup.c, * bfdtest2.c, * binemul.c, * binemul.h, * bucomm.c, * bucomm.h, * budbg.h, * coffgrok.c, * debug.c, * debug.h, * dlltool.c, * dwarf.c, * dwarf.h, * elfedit.c, * emul_aix.c, * mclex.c, * nm.c, * objcopy.c, * objdump.c, * od-macho.c, * prdbg.c, * rdcoff.c, * rddbg.c, * readelf.c, * rename.c, * stabs.c, * strings.c, * windint.h, * windmc.c, * windmc.h, * windres.c, * winduni.c, * wrstabs.c: Replace bfd_boolean with bool, FALSE with false, and TRUE with true throughout.
2021-02-25Add initial support for .debug_sup sections.Nick Clifton1-0/+1
* dwarf.c (get_type_abbrev_from_form): Accept but ignore sup forms. (read_and_display_attr_value): Handle sup forms. (display_debug_sup): New function. Displays the contents of a .debug_sup section. (load_debug_sup_file): New function. Loads the contents of a file referenced by a .debug_sup section. (check_for_and_load_links): Call load_debug_sup_file. (debug_displays): Add entry for .debug_sup. * dwarf.h (enum dwarf_section_display_enum): Add debug_sup. * readelf.c (process_section_headers): Add support for debug_sup. * doc/debug.options.texi: Note that the =links option will display the contents of .debug_sup sections. * NEWS: Mention the new support.
2021-02-15objdump: don't cache section contents in load_specific_debug_sectionAlan Modra1-2/+0
* 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.
2021-02-12[binutils] Fix typo in comment in dwarf.hTom de Vries1-1/+1
Fix typo DW_AT_GNU_FORM_addr_index -> DW_FORM_GNU_addr_index. binutils/ChangeLog: 2021-02-12 Tom de Vries <tdevries@suse.de> * dwarf.h (debug_info): Fix typo in comment.
2021-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2020-06-22Add support for decoding the DW_MACRO_define_strx and DW_MACRO_undef_strx ↵Nick Clifton1-0/+1
operands found in DWARF-5 .debug_macro sections. PR 26112 * dwarf.c (display_debug_str_offsets): Add code to display the contents of the .debug_str_offsets section. (display_debug_macro): Add support for DW_MACRO_define_strx and DW_MACRO_undef_strx.
2020-05-05Restore readelf's warnings that describe real problems with the file being ↵Nick Clifton1-0/+1
examined. Fix bug displaying empty file name tables. binutils* dwarf.c (do_checks): New global variable. (display_formatted_table): Warn about an unexpected number of columns in the table, if checks are enabled. Do not complain about the lack of data following the number of entries in the table if the table is empty. (display_debug_lines_decoded): Only warn about an unexpected number of columns in a table if checks are enabled. * dwarf.h (do_checks): Add a prototype. * elfcomm.c (error): Remove weak attribute. (warn): Likewise. * readelf.c (do_checks): Delete. (warn): Delete. (process_section_headers): Only warn about empty sections if checks are enabled. gas * dwarf2dbg.c (out_dir_and_file_list): Add comments describing the construction of a DWARF-5 directory name table. * testsuite/gas/elf/pr25917.d: Update expected output.
2020-04-29Add a warning if an emtpty SHT_REL, SHT_RELA or SHT_PROGBITS section is ↵Nick Clifton1-9/+13
detected. Disable all warnings unless the (new) lint mode is enabled. * readelf.c (warn): New function - like elfcomm.c version but only produces output if warnings are enabled. (struct options): Add --lint and --enable-checks. (usage): Add entry for --lint. (parse_args): Handle -L. If checks are enabled but no dumps have been selected then enable all dumps. (process_section_headers): Replace long if-then-else sequence with a switch. Add warning messages for empty SHT_REL, SHT_RELA and SHT_PROGBITS sections. (process_file): Do not complain if the file is an archive and lint mode has been enabled. * elfcomm.c (error): Make the function weak. (warn): Likewise. * NEWS: Mention the new feature. * doc/binutils.texi: Document the new feature. * dwarf.h (report_leb_status): Add file name and line number parameters. Include them in the diagnostic output. (READ_ULEB): Pass file and line number to report_leb_status. (READ_SLEB): Likewise. * dwarf.c (read_and_print_leb128): Pass file and line number to report_leb_status. * testsuite/binutils-all/readelf.exp: Add test of new feature. * testsuite/binutils-all/zero-sec.s: New test source file. * testsuite/binutils-all/zero-sec.r: Expected output from new test.
2020-03-11Add support for generating DWARF-5 format directory and file name tables ↵Nick Clifton1-0/+2
from the assembler. PR 25611 PR 25614 * dwarf.h (DWARF2_Internal_LineInfo): Add li_address_size and li_segment_size fields. * dwarf.c (read_debug_line_header): Record the address size and segment selector size values (if present) in the lineinfo structure. (display_formatted_table): Warn if the format count is empty but the table itself is not empty. Display the format count and entry count at the start of the table dump. (display_debug_lines_raw): Display the address size and segement selector size fields, if present. * testsuite/binutils-all/dw5.W: Update expected output. gas * dwarf2dbg.c (DWARF2_FILE_TIME_NAME): Default to -1. (DWARF2_FILE_SIZE_NAME): Default to -1. (DWARF2_LINE_VERSION): Default to the current dwarf level or 3, whichever is higher. (DWARF2_LINE_MAX_OPS_PER_INSN): Provide a default value of 1. (NUM_MD5_BYTES): Define. (struct file entry): Add md5 field. (get_filenum): Delete and replace with... (get_basename): New function. (get_directory_table_entry): New function. (allocate_filenum): New function. (allocate_filename_to_slot): New function. (dwarf2_where): Use new functions. (dwarf2_directive_filename): Add support for extended .file pseudo-op. (dwarf2_directive_loc): Allow the use of file number zero with DWARF 5 or higher. (out_file_list): Rename to... (out_dir_and_file_list): Add DWARF 5 support. (out_debug_line): Emit extra values into the section header for DWARF 5. (out_debug_str): Allow for file 0 to be used with DWARF 5. * doc/as.texi (.file): Update the description of this pseudo-op. * testsuite/gas/elf-dwarf-5-file0.s: Add more lines. * testsuite/gas/elf-dwarf-5-file0.d: Update expected dump output. * testsuite/gas/lns/lns-diag-1.l: Update expected error message. * NEWS: Mention the new feature.
2020-01-09Add support for debuginfod to the binutils (disable by default, enabled via ↵Aaron Merey1-0/+4
a configure time option). debuginfod is a lightweight web service that indexes ELF/DWARF debugging resources by build-id and serves them over HTTP. This patch enables objdump and readelf to query debuginfod servers when they are otherwise not able to find separate debug files. Binutils can be built with debuginfod using the --with-debuginfod configure option. This requires that libdebuginfod be installed and found at configure time. debuginfod is packaged with elfutils, starting with version 0.178. For more information see https://sourceware.org/elfutils/. toplevel* config/debuginfod.m4: New file. Add macro AC_DEBUGINFOD. Adds new configure option --with-debuginfod. * configure: Regenerate. * configure.ac: Call AC_DEBUGINFOD. binutils* Makefile.am (readelf_LDADD, objdump_LDADD): Add libdebuginfod. * Makefile.in: Regenerate. * NEWS: Update. * config.in: Regenerate. * configure: Regenerate. * configure.ac: Call AC_DEBUGINFOD. * doc/Makefile.in: Regenerate. * doc/binutils.texi: Add section on using binutils with debuginfod. * dwarf.c (debuginfod_fetch_separate_debug_info): New function. Query debuginfod servers for the target debug file. (load_separate_debug_info): Call debuginfod_fetch_separate_debug_info if configured with debuginfod. (load_separate_debug_files): Add file argument to load_separate_debug_info calls. * dwarf.h (get_build_id): Add declaration. * objdump.c (get_build_id): New function. Get build-id of file. * readelf.c (get_build_id): Likewise. * testsuite/binutils-all/debuginfod.exp: New tests. * testsuite/binutils-all/linkdebug.s: Add .note.gnu.build-id section.
2020-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2019-12-23Revise sleb128 and uleb128 readerAlan Modra1-2/+58
This patch catches and reports errors when reading leb128 values, addressing a FIXME in read_leb128. * dwarf.h (read_leb128): Update prototype. (report_leb_status): New inline function. (SKIP_ULEB, SKIP_SLEB, READ_ULEB, READ_SLEB): Define. * dwarf.c: Use above macros throughout file. Formatting. (read_leb128): Reorder params. Add status return param. Don't stop reading until finding terminator or end of data. Detect loss of significant bits. Sign extend only on terminating byte. (read_sleb128, read_uleb128): Delete functions. (SKIP_ULEB, SKIP_SLEB, READ_ULEB, READ_SLEB): Delete macros. (read_and_print_leb128): Rewrite. (process_extended_line_op): Return a size_t. Use size_t vars. Adjust to suit new macros. Add proper name size to "data" when processing DW_LNE_define_file. (process_abbrev_section): Adjust to suit new macros. (decode_location_expression, skip_attr_bytes): Likewise. (get_type_signedness): Likewise. (read_and_display_attr_value): Likewise. Consolidate block code. (process_debug_info): Adjust to suit new macros. (display_formatted_table, display_debug_lines_raw): Likewise. (display_debug_lines_decoded): Likewise. Properly check for end of DW_LNS_extended_op. (display_debug_macinfo): Adjust to suit new macros. (get_line_filename_and_dirname, display_debug_macro): Likewise. (display_view_pair_list): Likewise. Don't back off when hitting end of data. (display_loc_list): Adjust to suit new macros. (display_loclists_list, display_loc_list_dwo): Likewise. (display_debug_rnglists_list, read_cie): Likewise. (display_debug_frames): Likewise. * readelf.c: Use new ULEB macros throughout file. (read_uleb128): Delete. (decode_arm_unwind_bytecode): Use read_leb128. (decode_tic6x_unwind_bytecode): Likewise. (display_tag_value): Adjust to suit new macros. (display_arc_attribute, display_arm_attribute): Likewise. (display_gnu_attribute, display_power_gnu_attribute): Likewise. (display_s390_gnu_attribute, display_sparc_gnu_attribute): Likewise. (display_mips_gnu_attribute, display_tic6x_attribute): Likewise. (display_msp430x_attribute, display_msp430_gnu_attribute): Likewise. (display_riscv_attribute, process_attributes): Likewise.
2019-11-28binutils: Make some functions static in dwarf.cAndrew Burgess1-6/+0
The architecture specific register name initialisation routines no longer need to be externally visible, so make them static. binutils/ChangeLog: * dwarf.c (init_dwarf_regnames_i386): Make static. (init_dwarf_regnames_iamcu): Make static. (init_dwarf_regnames_x86_64): Make static. (init_dwarf_regnames_aarch64): Make static. (init_dwarf_regnames_s390): Make static. (init_dwarf_regnames_riscv): Make static. * dwarf.h (init_dwarf_regnames_i386): Delete declaration. (init_dwarf_regnames_iamcu): Delete declaration. (init_dwarf_regnames_x86_64): Delete declaration. (init_dwarf_regnames_aarch64): Delete declaration. (init_dwarf_regnames_s390): Delete declaration. (init_dwarf_regnames_riscv): Delete declaration. Change-Id: I9e350f76f98f46e9e3dd88d502f2a2a83e44cb36
2019-11-28binutils: Add a new function to initialise DWARF register name stateAndrew Burgess1-0/+2
Adds a new API function init_dwarf_regnames_by_bfd_arch_and_mach to initialise the register name state from a BFD architecture and machine type. There should be no user visible changes after this commit. binutils/ChangeLog: * dwarf.c (init_dwarf_regnames_by_bfd_arch_and_mach): New function. * dwarf.h (init_dwarf_regnames_by_bfd_arch_and_mach): Declare. * objdump.c (dump_dwarf): Call new function instead of calling specific initialization routines. Restrucure so that eh_addr_size is still calculated correctly. Change-Id: I346d665d2079a18ec4d04bd41893d0e9dc05e4b3
2019-11-28binutils: Rename init_dwarf_regnamesAndrew Burgess1-1/+1
As part of a process to change how dwarf.c figures out the correct name for a register I wanted to clean up how we initialise the register name tracking state. As part of this I rename init_dwarf_regnames to init_dwarf_regnames_by_elf_machine_code, later commits will add a different entry point to initialise the register name state. There should be no user visible changes after this commit. binutils/ChangeLog: * dwarf.c (init_dwarf_regnames): Renamed to... (init_dwarf_regnames_by_elf_machine_code): ...this. * dwarf.h (init_dwarf_regnames): Renamed to... (init_dwarf_regnames_by_elf_machine_code): ...this. * readelf.c (process_file_header): Update call to use new name. Change-Id: Ic8d2ef5fb62a8590ecd8cbb7e6258e11c6263594
2019-02-25Extend objdump's --dwarf=follow-links option so that separate debug info ↵Nick Clifton1-0/+1
files will also be affected by other dump function, and symbol tables from separate debug info files will be used when disassembling the main file. * objdump.c (sym_ok): New function. (find_symbol_for_address): Use new function. (disassemble_section): Compare sections by name, not pointer. (dump_dwarf): Move code to initialise byte_get pointer and iterate over separate debug files from here to ... (dump_bfd): ... here. Add parameter indicating that a separate debug info file is being dumped. For main file, pull in the symbol tables from all separate debug info files. (display_object): Update call to dump_bfd. * doc/binutils.texi: Document extened behaviour of the --dwarf=follow-links option. * NEWS: Mention this new feature. * testsuite/binutils-all/objdump.WK2: Update expected output. * testsuite/binutils-all/objdump.exp (test_follow_debuglink): Add options and dump file parameters. Add extra test. * testsuite/binutils-all/objdump.WK3: New file. * testsuite/binutils-all/readelf.exp: Change expected output for readelf -wKis test. * testsuite/binutils-all/readelf.wKis: New file.
2019-02-22Extend readelf and objdump so that they will display and follow multiple ↵Nick Clifton1-1/+10
links to separate debug information files. PR 23843 * dwarf.h (struct separate_info): New structure for containing information on separate debug info files. * dwarf.c (struct dwo_info): New structure for containing dwo links. (first_dwo_info): Chain of dwo_info structures. (first_separate_file): Chain of separate_info structures. (separate_debug_file, separate_debug_filename): Delete. (fetch_alt_indirect_string): Scan all separate debug info files for the requested string. (add_dwo_info): New function. (add_dwo_name): New function. (add_dwo_dir): New function. (add_dwo_id: New function. (free_dwo_info): New function. (read_and_display_attr_value): Store DWO data using the new functions. (load_debug_section_with_follow): If necessary, scan the list of separate debug info files for the requested section. (add_separate_debug_file): New function. (load_separate_debug_info): Call add_separate_debug_file to store the information on the newly loaded file. (load_dwo_file): Likewise. (load_separate_debif_file): Rename to load_separate_debug_files. Change return type to boolean. If following links then attempt to load all separate debug info files, not just the first one. (free_debug_memory): Release memory in dwo_info and separate_info chains. * objdump.c (dump_dwarf): Iterate over all loaded debg info files. * readelf.c (process_object): Likewise. * doc/debug.options.texi: Update descriptions of links and follow-links options. * testsuite/binutils-all/objdump.WK2: Update expected output. * testsuite/binutils-all/readelf.k2: Likewise. * NEWS: Announce the new feature.
2019-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2018-02-02binutils/riscv: Register names in DWARF outputAndrew Burgess1-0/+1
Adds a register name table for RiscV so that objdump and readelf can both use better register names. binutils/ChangeLog: * dwarf.c (dwarf_regnames_riscv): New register name table. (init_dwarf_regnames_riscv): New function. (init_dwarf_regnames): Add call to initialise RiscV register names. * dwarf.h (init_dwarf_regnames_riscv): Declare. * objdump.c (dump_dwarf): Add call to initialise RiscV register names.
2018-01-03Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2017-11-15Add support to readelf and objdump for following links to separate debug ↵Nick Clifton1-18/+26
information files. Hi Guys, I am applying the rather large patch attached to this email to enhance the readelf and objdump programs so that they now have the ability to follow links to separate debug info files. (As requested by PR 15152). So for example whereas before we had this output: $ readelf -wi main.exe Contents of the .debug_info section: [...] <15> DW_AT_comp_dir : (alt indirect string, offset: 0x30c) [...] With the new option enabled we get: $ readelf -wiK main.exe main.exe: Found separate debug info file: dwz.debug Contents of the .debug_info section (loaded from main.exe): [...] <15> DW_AT_comp_dir : (alt indirect string, offset: 0x30c) /home/nickc/Downloads/dwzm [...] The link following feature also means that we can get two lots of output if the same section exists in both the main file and the separate debug info file: $ readelf -wiK main.exe main.exe: Found separate debug info file: dwz.debug Contents of the .debug_info section (loaded from main.exe): [...] Contents of the .debug_info section (loaded from dwz.debug): [...] The patch also adds the ability to display the contents of debuglink sections: $ readelf -wk main.exe Contents of the .gnu_debugaltlink section: Separate debug info file: dwz.debug Build-ID (0x14 bytes): c4 a8 89 8d 64 cf 70 8a 35 68 21 f2 ed 24 45 3e 18 7a 7a 93 Naturally there are long versions of these options (=follow-links and =links). The documentation has been updated as well, and since both readelf and objdump use the same set of debug display options, I have moved the text into a separate file. There are also a couple of new binutils tests to exercise the new behaviour. There are a couple of missing features in the current patch however, although I do intend to address them in follow up submissions: Firstly the code does not check the build-id inside separate debug info files when it is searching for a file specified by a .gnu_debugaltlink section. It just assumes that if the file is there, then it contains the information being sought. Secondly I have not checked the DWARF-5 version of these link features, so there will probably be code to add there. Thirdly I have only implemented link following for the DW_FORM_GNU_strp_alt format. Other alternate formats (eg DW_FORM_GNU_ref_alt) have yet to be implemented. Lastly, whilst implementing this feature I found it necessary to move some of the global variables used by readelf (eg section_headers) into a structure that can be passed around. I have moved all of the global variables that were necessary to get the patch working, but I need to complete the operation and move the remaining, file-specific variables (eg dynamic_strings). Cheers Nick binutils PR 15152 * dwarf.h (enum dwarf_section_display_enum): Add gnu_debuglink, gnu_debugaltlink and separate_debug_str. (struct dwarf_section): Add filename field. Add prototypes for load_separate_debug_file, close_debug_file and open_debug_file. * dwarf.c (do_debug_links): New. (do_follow_links): New. (separate_debug_file, separate_debug_filename): New. (fetch_alt_indirect_string): New function. Retrieves a string from the debug string table in the separate debug info file. (read_and_display_attr_value): Use it with DW_FORM_GNU_strp_alt. (load_debug_section_with_follow): New function. Like load_debug_section, but if the first attempt fails, then tries again in the separate debug info file. (introduce): New function. (process_debug_info): Use load_debug_section_with_follow and introduce. (load_debug_info): Likewise. (display_debug_lines_raw): Likewise. (display_debug_lines_decoded): Likewise. (display_debug_macinfo): Likewise. (display_debug_macro): Likewise. (display_debug_abbrev): Likewise. (display_debug_loc): Likewise. (display_debug_str): Likewise. (display_debug_aranges): Likewise. (display_debug_addr); Likewise. (display_debug_frames): Likewise. (display_gdb_index): Likewise. (process_cu_tu_index): Likewise. (load_cu_tu_indexes): Likewise. (display_debug_links): New function. Displays the contents of a .gnu_debuglink or .gnu_debugaltlink section. (calc_gnu_debuglink_ctc32):New function. Calculates a CRC32 value. (check_gnu_debuglink): New function. Checks the CRC of a potential separate debug info file. (parse_gnu_debuglink): New function. Reads a CRC value out of a .gnu_debuglink section. (check_gnu_debugaltlink): New function. (parse_gnu_debugaltlink): New function. Reads the build-id value out of a .gnu_debugaltlink section. (load_separate_debug_info): New function. Finds and loads a separate debug info file. (load_separate_debug_file): New function. Attempts to find and follow a link to a separate debug info file. (free_debug_memory): Free the separate debug info file information. (opts_table): Add "follow-links" and "links". (dwarf_select_sections_by_letters): Add "k" and "K". (debug_displays): Reformat. Add .gnu-debuglink and .gnu_debugaltlink. Add an extra entry for .debug_str in a separate debug info file. * doc/binutils.texi: Move description of debug dump features common to both readelf and objdump into... * objdump.c (usage): Add -Wk and -WK. (load_specific_debug_section): Initialise the filename field in the dwarf_section structure. (close_debug_file): New function. (open_debug_file): New function. (dump_dwarf): Load and dump the separate debug info sections. * readelf.c (struct filedata): New structure. Contains various variables that used to be global: (current_file_size, string_table, string_table_length, elf_header) (section_headers, program_headers, dump_sects, num_dump_sects): Move into filedata structure. (cmdline): New global variable. Contains list of sections to dump by number, as specified on the command line. Add filedata parameter to most functions. (load_debug_section): Load the string table if it has not already been retrieved. (close_file): New function. (close_debug_file): New function. (open_file): New function. (open_debug_file): New function. (process_object): Process sections in any separate debug info files. * doc/debug.options.texi: New file. Add description of =links and =follow-links options. * NEWS: Mention the new feature. * elfcomm.c: Have the byte gte functions take a const pointer. * elfcomm.h: Update prototypes. * testsuite/binutils-all/dw5.W: Update expected output. * testsuite/binutils-all/objdump.WL: Update expected output. * testsuite/binutils-all/objdump.exp: Add test of -WK and -Wk. * testsuite/binutils-all/readelf.exp: Add test of -wK and -wk. * testsuite/binutils-all/readelf.k: New file. * testsuite/binutils-all/objdump.Wk: New file. * testsuite/binutils-all/objdump.WK2: New file. * testsuite/binutils-all/linkdebug.s: New file. * testsuite/binutils-all/debuglink.s: New file. gas * testsuite/gas/avr/large-debug-line-table.d: Update expected output. * testsuite/gas/elf/dwarf2-11.d: Likewise. * testsuite/gas/elf/dwarf2-12.d: Likewise. * testsuite/gas/elf/dwarf2-13.d: Likewise. * testsuite/gas/elf/dwarf2-14.d: Likewise. * testsuite/gas/elf/dwarf2-15.d: Likewise. * testsuite/gas/elf/dwarf2-16.d: Likewise. * testsuite/gas/elf/dwarf2-17.d: Likewise. * testsuite/gas/elf/dwarf2-18.d: Likewise. * testsuite/gas/elf/dwarf2-5.d: Likewise. * testsuite/gas/elf/dwarf2-6.d: Likewise. * testsuite/gas/elf/dwarf2-7.d: Likewise. ld * testsuite/ld-avr/gc-section-debugline.d: Update expected output.
2017-09-22LVU: dump loclists with locviewsAlexandre Oliva1-0/+3
When dumping location lists, also dump locview lists that may be interspersed with them, and bring view pairs next to the corresponding location list entries. This patch supports DW_AT_GNU_locviews as a separate attribute for DWARF4- loc_lists and split (dwo) loclists, as well as DWARF5 loclists. It also supports, in DWARF5 loclists, the proposed DW_LLE_GNU_view_pair loclist entry type proposed for DWARF6. The tests use 32-bit DWARF, even on 64-bit targets, resolving offsets to constants so as to reduce the risk that relocations be created for them, or that the offsets be rejected as nonconstants. The patch also adds an xfail to an unrelated test, namely dw5, so that no unexpected fails remain on nds32*-elf, one of the tested targets. Reviewed-by: Alan Modra <amodra@gmail.com> for include/ChangeLog * dwarf2.def (DW_AT_GNU_locviews): New. * dwarf2.h (enum dwarf_location_list_entry_type): Add DW_LLE_GNU_view_pair. (DW_LLE_view_pair): Define. for binutils/ChangeLog * dwarf.h (debug_info): Add loc_views and num_loc_views. * dwarf.c (vm1): New constant. (print_dwarf_view): New function. (read_and_display_attr_value): Support DW_AT_GNU_locviews. (process_debug_info): Keep num_loc_offsets and num_loc_views in sync. (display_view_pair_list): New function. (display_loc_list_dwo): Take vstart_ptr; update it. Dump location view pairs before the range they apply to, when a viewlist augments the loc list. (display_loc_list): Likewise. Check view numbers in range tests. (display_loclists_list): Likewise. Handle view pair entries, and warn on trailing ones. (loc_views): New variable. (loc_offsets_compar): Compare loc_views if loc_offsets are the same. (display_debug_loc): Check and sort loc_views too. Accept loc_view as expected_start. Skip if lists and views are the same. Dump locview list separately in order, and pass the locview list base to each list dump function. Warn and skip overlap and hole checking if we find loclists and locviews to not be adjacent. * testsuite/binutils-all/locview-1.s: New. * testsuite/binutils-all/readelf.locview-1: New. * testsuite/binutils-all/locview-2.s: New. * testsuite/binutils-all/readelf.locview-2: New. * testsuite/binutils-all/readelf.exp: Run new tests. Fix option spelling in pr18374 fail message. XFAIL dw5 test on nds32*-elf.
2017-07-02DWARF-5: readelf: .debug_namesJan Kratochvil1-0/+1
Display DWARF-5 .debug_names (standardized .gdb_index). binutils/ChangeLog 2017-07-02 Jan Kratochvil <jan.kratochvil@redhat.com> * dwarf.c: Include assert.h. (MAX, MIN, get_IDX_name, display_debug_names): New. (debug_displays): Add .debug_names. * dwarf.h: (enum dwarf_section_display_enum): Add debug_names. * readelf.c (process_section_headers): Add ".debug_names".
2017-03-02Fix dwarf_section_display_enum regression by DWARF-5Jan Kratochvil1-0/+2
binutils/ 2017-03-02 Jan Kratochvil <jan.kratochvil@redhat.com> * dwarf.h (enum dwarf_section_display_enum): Add loclists and rnglists.
2017-02-23DWARF-5 basic functionalityJan Kratochvil1-0/+5
binutils/ 2017-02-23 Jan Kratochvil <jan.kratochvil@redhat.com> * dwarf.c (fetch_indirect_line_string): New function. (abbrev_attr): New field implicit_const. (add_abbrev_attr): New parameter implicit_const. (process_abbrev_section): Support DW_FORM_implicit_const. (decode_location_expression): Support DW_OP_entry_value. (read_and_display_attr_value): Add parameter implicit_const. Support DW_FORM_line_strp and DW_FORM_implicit_const. (read_and_display_attr): Add parameter implicit_const. (process_debug_info): Support line_str and DWARF-5. (read_debug_line_header): Support DWARF-5. (display_formatted_table): New function. (display_debug_lines_raw): New parameter file. Support DWARF-5. (display_debug_lines_decoded): New parameter fileptr. Support DWARF-5. (display_debug_lines): Pass file parameter. (display_debug_macro): Update read_and_display_attr_value caller. (display_debug_abbrev): Support DW_FORM_implicit_const. (display_loclists_list): New function. (display_loc_list): Support .debug_loclists. (display_debug_ranges_list): New function from display_debug_ranges. (display_debug_rnglists_list): New function. (display_debug_ranges): Support .debug_rnglists. (debug_displays): Add .debug_line_str, .debug_loclists and .debug_rnglists. * dwarf.h: Include dwarf2.h (DWARF2_Internal_LineInfo): Add li_offset_size. (DWARF2_Internal_CompUnit): Add cu_unit_type. (enum dwarf_section_display_enum): Add line_str. * readelf.c (process_section_headers): Add rnglists and loclists.
2017-01-02Update year range in copyright notice of all files.Alan Modra1-1/+1
2016-11-27Fix spelling in comments in C source files (binutils)Ambrogino Modigliani1-1/+1
* dwarf.c: Fix spelling in comments. * dwarf.h: Fix spelling in comments. * objcopy.c: Fix spelling in comments. * od-macho.c: Fix spelling in comments. * rclex.c: Fix spelling in comments. * readelf.c: Fix spelling in comments. * stabs.c: Fix spelling in comments.
2016-04-13Add init_dwarf_regnames_s390Andreas Arnez1-0/+1
Define and use DWARF register names for s390. binutils/ChangeLog: * dwarf.h (init_dwarf_regnames_s390): Declare. * dwarf.c (dwarf_regnames_s390): New. (init_dwarf_regnames_s390): New. (init_dwarf_regnames): Call it. * objdump.c (dump_dwarf): Likewise.
2016-01-01Copyright update for binutilsAlan Modra1-1/+1
2015-05-15Fix PR18374 by making readelf and objdump ignore end-of-list markers in the ↵Nick Clifton1-1/+11
.debug_loc section if there are relocations against them. PR binutils/18374 bin * dwarf.h (struct dwarf_section): Add reloc_info and num_relocs fields. (struct dwarf_section_display): Change bitfield to boolean. (reloc_at): Add prototype. * dwarf.c (display_loc_list): Ignore list terminators if there are relocs against them. (display_debug_loc): Issue a warning if there are relocs against the .debug_loc section. (display_displays): Initialise reloc_info and num_relocs fields. * objdump.c (load_specific_debug_section): Initialise reloc_info and num_relocs fields. (reloc_at): New function. * readelf.c (is_32bit_abs_reloc): Add IA64's R_IA64_DIS32LSB reloc. (reloc_at): New function. (apply_relocations): Add relocs_return and num_relocs_return parameters. Fill them in with the loaded relocs if non-NULL. (dump_section_as_bytes): Update call to apply_relocations. (load_specific_debug_section): Initialise reloc_info and num_relocs fields. tests * binutils-all/pr18374.s: New test file. * binutils-all/readelf.exp: Assemble and run the new test. * binutils-all/readelf.pr18374: Expected output from readelf.
2015-05-11Add init_dwarf_regnames_iamcuH.J. Lu1-0/+1
* dwarf.c (dwarf_regnames_iamcu): New. (init_dwarf_regnames_iamcu): Likewise. (init_dwarf_regnames): Call init_dwarf_regnames_iamcu for EM_IAMCU. * dwarf.h (init_dwarf_regnames_iamcu): New. * objdump.c (dump_dwarf): Call init_dwarf_regnames_iamcu for bfd_arch_iamcu.
2015-02-10Fix memory access violations triggered by running objdump compiled with ↵Nick Clifton1-43/+3
out-of-bounds sanitization checking. PR binutils/17512 * dwarf.c (eh_addr_size): Use an unsigned type. (size_of_encoded_value): Return an unsigned type. (read_leb128): Break if the shift becomes too big. (process_extended_line_op): Do not read the address if the length is too long. (read_cie): Warn and fail if the pointer size or segment size are too big. * dwarf.h (DWARF2_External_LineInfo): Delete unused and incorrect structure definition. (DWARF2_External_PubNames): Likewise. (DWARF2_External_CompUnit): Likewise. (DWARF2_External_ARange): Likewise. (DWARF2_Internal_LineInfo): Use dwarf_vma type for li_prologue_length. (eh_addr_size): Update prototype. * coffcode.h (styp_to_sec_flags): Use an unsigned long type to hold the flag bits. * peXXigen.c (pe_print_reloc): Use unsigned types to hold the size and number of relocs. (pe_print_debugdata): Use a 32-bit aligned buffer to store the codeview record. * versados.c (process_otr): Check the esdid value before using it to access the EDATA.
2015-01-12More fixes for memory access errors when running readelf on fuzzed binaries.Nick Clifton1-0/+1
PR binutils/17531 * dwarf.c (process_debug_info): Check for abbrev_base being larger than the section size. (process_cu_tu_index): Use xcalloc2 to allocate the CU and TU arrays. (xcalloc2): New function. Like xcalloc, but checks for overflow. * dwarf.h (xcalloc2): Prototype.
2015-01-05More fixes for invalid memory accesses triggered by fuzzed binaries.Nick Clifton1-4/+4
PR binutils/17531 * dwarf.c (alloc_num_debug_info_entries): New variable. (process_debug_info): Set it. Use it to avoid displaying attributes for which there is no info. (display_debug_abbrev): Check that the debug_info_entry index is valid before using it. (display_loc_list_dwo): Likewise. (process_cu_tu_index): Add range check for an overlarge dw_sect value. (free_debug_memory): Reset alloc_num_debug_info_entries. * readelf.c (slurp_ia64_unwind_table): Warn if the reloc could not be indentified. (dynamic_section_mips_val): Warn if the timestamp is invalid. (print_mips_got_entry): Add a data_end parameter. Warn if a read would go beyond the end of the data, and return an error value. (process_mips_specific): Do not read options from beyond the end of the section. Correct code to display optional data at the end of an option. Warn if there are too many GOT symbols. Update calls to print_mips_got_entry, and handle error returns.
2015-01-02ChangeLog rotatation and copyright year updateAlan Modra1-1/+1
2014-12-01More fixes for memory access violations exposed by fuzzed binaries.Nick Clifton1-0/+2
PR binutils/17512 * dwarf.h (struct dwarf_section): Add user_data field. * dwarf.c (frame_need_space): Check for an over large register number. (display_debug_frames): Check the return value from frame_need_space. Check for a CFA expression that is so long the start address wraps around. (debug_displays): Initialise the user_data field. * objdump.c (load_specific_debug_section): Save the BFD section pointer in the user_data field of the dwarf_section structure. (free_debug_section): Update BFD section data when freeing section contents. * readelf.c (load_specific_debug_section): Initialise the user_data field. * archive.c (do_slurp_coff_armap): Add range checks to prevent running off the end of the string table. * compress.c (bfd_get_full_section_contents): Return a NULL pointer for zero sized sections. Do not attempt to copy a buffer onto itself. * elf-attrs.c (_bfd_elf_parse_attributes): Check for an empty header. Add range checks to avoid running off the end of the section. * elf.c (bfd_elf_get_str_section): Seek before allocating so that if the seek fails, no memory is allocated. (bfd_elf_string_from_elf_section): Do not allocate a string from a non string section. It only leads to trouble later on. (_bfd_elf_print_private_bfd_data): Check for there being too little external dynamic data. (bfd_section_from_shdr): Replace assertion with a failure mode. (bfd_section_from_shdr): When walking a loaded group section use the internal structure size, not the external size. Check for the group section being empty. * elf32-i386.c (elf_i386_rtype_to_howto): Replace assertion with a failure mode. * elfcode.h (elf_slurp_reloc_table): Likewise. * reloc.c (bfd_perform_relocation): Avoid seg-fault if the howto parameter is NULL.
2014-08-22aarch64: Decode dwarf2 register numbersRichard Henderson1-0/+1
* dwarf.h (init_dwarf_regnames_aarch64): Declare. * dwarf.c (dwarf_regnames_aarch64): New. (init_dwarf_regnames_aarch64): New. (init_dwarf_regnames): Call it. * objdump.c (dump_dwarf): Likewise.
2014-03-05Update copyright yearsAlan Modra1-1/+1
2013-11-07 Add pretty-printing of .debug_gnu_pubnames, .debug_gnu_pubtypes.Doug Evans1-0/+4
* dwarf.c (get_gdb_index_symbol_kind_name): New function. (display_debug_pubnames_worker): Renamed from display_debug_pubnames. Add support for .debug_gnu_pubnames, .debug_gnu_pubtypes. (display_debug_pubnames, display_debug_pubnames_gnu): New functions. (display_gdb_index): Redo printing of symbol kind. (debug_displays): Add .debug_gnu_pubnames, .debug_gnu_pubtypes. * dwarf.h (dwarf_section_display_enum): Add gnu_pubnames, gnu_pubtypes. * readelf.c (process_section_headers): Add gnu_pubnames, gnu_pubtypes.
2013-03-25 PR binutils/15202Nick Clifton1-3/+2
* dwarf.c (read_leb128): Add END parameter. Do not read at or beyond end. (read_sleb128): Add END parameter. (read_uleb128): New function. (process_extended_line_op): Pass END to leb128 functions. (process_abbrev_section): Likewise. (decode_location_expression): Likewise. (read_and_display_attr_value): Likewise. (read_and_display_attr): Likewise. (process_debug_info): Likewise. (display_debug_lines_raw): Likewise. (display_debug_lines_decoded): Likewise. (display_debug_macinfo): Likewise. (get_line_filename_and_dirname): Likewise. (display_debug_macro): Likewise. (display_loc_list_dwo): Likewise. (display_debug_ranges): Likewise. * dwarf.h (read_leb128): Update prototype. * readelf.c (read_uleb128): Add END parameter. (decode_arm_unwind_bytecode): Pass END to read_uleb128. (decode_tic6x_unwind_bytecode): Likewise. (display_tag_value): New function. (display_arm_attribute): Add END parameter. Pass END to read_uleb128. Use display_tag_value. (display_gnu_attribute): Likewise. (display_power_gnu_attribute): Likewise. (display_sparc_gnu_attribute): Likewise. (display_mips_gnu_attribute): Likewise. (display_tic6x_attribute): Likewise. (process_attributes): Likewise. (display_raw_attribute): New function.
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