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Compilers may split functions, e.g. into a "hot" and "cold" part, or
they may emit special case instantiations (e.g. as a result of IPA). It
can be helpful to be able to disassemble all of the parts or clones in
one go. Permit using "--disassemble=" multiple times.
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... when only their symbol was requested for disassembly. Addressing the
respective FIXME is as easy as coverting the "else" there to an if()
with the opposite condition, thus accounting for the disabling the
original if() may have effected.
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This fixes a deficiency in commit 660df28acfa1, which should have used
the same logic as that in sym_ok. Ideally both places would not
compare section names, but it can be a little tricky to match a
section in the real object file with a section in a debug file.
Extend commit 39f0547e554d to use section name, vma and size.
* objcopy (is_same_section): New function.
(compare_symbols, sym_ok): Use it here.
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ctf_archive_next returns an opened dict, which must be closed by the caller.
Thanks to Alan Modra for spotting this.
binutils/
* objdump.c (dump_ctf): Close dict.
* readelf.c (dump_section_as_ctf): Likewise.
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or -R options and no regular relocs are present.
PR 32459
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* objdump.c (main): Free disassembler_options.
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There's always someone pushing the boundaries.
PR 32560
* objdump.c (MAX_INSN_WIDTH): Define.
(insn_width): Make it an unsigned long.
(disassemble_bytes): Use MAX_INSN_WIDTH to size buffer.
(main <OPTION_INSN_WIDTH>): Restrict size of insn_width.
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The sym array should be freed even with a symcount of zero.
* objdump.c (dump_bfd): Free syms before replacing with
extra_syms. Free extra_syms after adding to syms.
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In commit cd6581da62c3, Nick made an optimisation that was reasonable
at the time, but then pr22032 came along and commit 7c0ed39626e3 made
bfd_close_all_done free memory. So Nick's optimisation is now
ineffective, and the comment wrong.
* objdump.c (display_file): Delete last_file param. Update
caller. Call bfd_close always.
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This also reduces peak memory a little.
* dlltool.c (identify_search_archive): Close last_arfile earlier.
Report an error if bfd_openr_next_archived_file returns the same
bfd. Localise variables.
* nm.c (display_archive): Likewise.
* objdump.c (display_any_bfd): Likewise.
* size.c (display_archive): Likewise.
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xasprintf has a nicer interface and behaves like xmalloc as far as
memory is concerned, ie. no need to check a return status and the
program exits with an error on OOM.
binutils/
* dwarf.c (load_debug_sup_file): Replace asprintf with xasprintf.
* nm.c (get_elf_symbol_type, get_coff_symbol_type): Likewise.
* objdump.c (dump_ctf_indent_lines): Likewise.
* readelf.c (display_lto_symtab, dump_ctf_indent_lines): Likewise.
* windres.c (main): Likewise.
* configure.ac: Remove asprintf from AC_CHECK_DECLS.
* config.in: Regenerate.
* configure: Regenerate.
gas/
* config/tc-kvx.c (kvx_emit_single_noop): Simplify.
* config/tc-riscv.c (md_assemblef): Replace asprintf with xasprintf.
* read.c (s_nop, do_s_func): Likewise.
* stabs.c (stabs_generate_asm_func): Likewise.
(stabs_generate_asm_endfunc): Likewise.
* configure.ac: Remove asprintf from AC_CHECK_DECLS.
* config.in: Regenerate.
* configure: Regenerate.
ld/
* ldlang.c (lang_leave_overlay_section): Replace xmalloc+sprintf
with xasprintf. Localise vars.
* lexsup.c (parse_args): Replace asprintf with xasprintf.
* pe-dll.c (make_head, make_tail, make_one): Likewise.
(make_singleton_name_thunk, make_import_fixup_entry): Likewise.
(make_runtime_pseudo_reloc): Likewise.
(pe_create_runtime_relocator_reference): Likewise.
* configure.ac: Remove asprintf from AC_CHECK_DECLS.
* config.in: Regenerate.
* configure: Regenerate.
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We should set BFD_DECOMPRESS to decompress sections unless dumping the
section contents when reading build-id debuglink.
PR binutils/31925
* objdump.c (open_debug_file): Set BFD_DECOMPRESS to decompress
sections unless dumping the section contents.
* testsuite/binutils-all/objdump.exp (test_build_id_debuglink):
Add a compress option.
Run test_build_id_debuglink with none and zlib.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
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The fuzzers found a hole. bfd_section_size_insane doesn't check
!SEC_HAS_CONTENTS sections against file size for obvious reasons,
which allows fuzzed debug sections to be stupidly large. Real debug
sections of course always have contents.
PR 31692
* objdump.c (load_specific_debug_section): Don't allow sections
without contents.
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PR 31692
* objdump.c (load_specific_debug_section): Replace bfd_get_size
check with bfd_section_size_insane. Call free_debug_section
after printing error messages. Set section->start NULL when
freeing.
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This lets you examine CTF where the parent and child dicts are in entirely
different sections, rather than in a CTF archive with members with different
names. The linker doesn't emit ELF objects structured like this, but some
third-party linkers may; it's also useful for objcopy-constructed files
in some cases.
(This is what the objdump --ctf-parent option used to do before commit
80b56fad5c99a8c9 in 2021. The new semantics of that option are much more
useful, but that doesn't mean the old ones are never useful at all, so let's
bring them back.)
(I was specifically driven to add this by DTrace's obscure "ctypes" and
"dtypes" options, which dump its internal, dynamically-generated dicts out
to files for debugging purposes: there are two, one the parent of the other.
Since they're in two separate files rather than a CTF archive and we have no
tools that paste files together into archives, objdump wouldn't show them --
and even pasting them together into an ELF executable with objcopy didn't
help, since objdump had no options that could be used to look in specific
sections for the parent dict. With --ctf-parent-section, this sort of
obscure use case becomes possible again. You'll never need it for the
output of the normal linker.)
binutils/
* doc/ctf.options.texi: Add --ctf-parent-section=.
* objdump.c (dump_ctf): Implement it.
(dump_bfd): Likewise.
(main): Likewise.
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I don't think any of these can overflow, but since all of the
expressions I'm editing here are inside a while loop with condition
addr_offset < stop_offset, this change makes it more obvious that they
can't overflow.
* objdump.c (disassemble_bytes): Calculate octet expressions
involving both addr_offset and stop_offset by first
subtracting addr_offset from stop_offset.
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symbols referenced by an instruction.
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Given this testcase:
.text
mov $x1,%eax
f1:
mov $f1,%eax
.type f1,@function
.size f1,.-f1
mov $x2,%eax
f2:
mov $f2,%eax
.type f2,@function
.size f2,.-f2+0x1000 #bad size
objdump --reloc --disassemble=f1 prints
00000000 <f1-0x5>:
0: b8 00 00 00 00 mov $0x0,%eax
and objdump --reloc --disassemble=f2 prints
0000000f <f2>:
f: b8 0f 00 00 00 mov $0xf,%eax
10: R_386_32 .text
It seems for f1 we get the insn before f1 and no reloc whereas, post
159daa36fa, f2 is disassembled correctly. Some analysis says that
find_symbol_for_address may return a symbol past the current address,
and reloc skipping is broken. Fix both of these problems.
* objdump.c (disassemble_jumps, disassemble_bytes): Replace
relppp with relpp, ie. don't update caller's rel_pp. Adjust
calls.
(disassemble_section): Skip over relocs inside loop rather
than before loop. Revert 7e538762c2c1. If given a symbol,
don't start disassembling until its address is reached.
Correct end of function calculation.
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Fix yet another crash, this one with a fuzzed function symbol size.
The patch also corrects objdump behaviour when both --disassemble=sym
and --stop-address=value are given. Previously --disassemble=sym
overrode --stop-address, now we take the lower of the stop-address
value and the end of function.
* objdump.c (disassemble_section): Sanity check ELF st_size.
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* objdump.c (disassemble_section): Free rel_ppstart on error path.
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Adds two new external authors to etc/update-copyright.py to cover
bfd/ax_tls.m4, and adds gprofng to dirs handled automatically, then
updates copyright messages as follows:
1) Update cgen/utils.scm emitted copyrights.
2) Run "etc/update-copyright.py --this-year" with an extra external
author I haven't committed, 'Kalray SA.', to cover gas testsuite
files (which should have their copyright message removed).
3) Build with --enable-maintainer-mode --enable-cgen-maint=yes.
4) Check out */po/*.pot which we don't update frequently.
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PR 31062
* objdump.c (decompressed_dumps): New local variable. (usage): Mention the -z/--decompress option. (long_options): Add --decompress. (dump_section_header): Add "COMPRESSED" to the Flags field of any compressed section. (dump_section): Warn users when dumping a compressed section. (display_any_bfd): Decompress the section if decompressed_dumps is true. (main): Handle the -z/--decompress option.
* NEWS: Mention the new feature.
* doc/binutils.texi: Document the new feature.
* testsuite/binutils-all/objdump.s: Update expected output.
* testsuite/binutils-all/objdump.exp: Add test of -Z -s.
* testsuite/binutils-all/objdump.Zs: New file.
* readelf.c (maybe_expand_or_relocate_section): New function. Contains common code found in dump functions. Adds a note message if a compressed section is not being decompressed. (dump_section_as_strings): Use new function. (dump_section_as_bytes): Likewise.
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* objdump.c (disassemble_data): Free sorted_syms before returning.
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Seen on Ubuntu 23.04 x86_64-linux using gcc-12.2 and gcc-12.3 with
CFLAGS="-m32 -g -O2 -fsanitize=address,undefined".
CC objdump.o
In file included from /usr/include/stdio.h:906,
from /home/alan/src/binutils-gdb/binutils/sysdep.h:24,
from /home/alan/src/binutils-gdb/binutils/objdump.c:51:
In function 'sprintf',
inlined from 'display_utf8' at /home/alan/src/binutils-gdb/binutils/objdump.c:621:14,
inlined from 'sanitize_string.part.0' at /home/alan/src/binutils-gdb/binutils/objdump.c:742:11:
/usr/include/bits/stdio2.h:30:10: error: null destination pointer [-Werror=format-overflow=]
30 | return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
31 | __glibc_objsize (__s), __fmt,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
32 | __va_arg_pack ());
| ~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
The warning is bogus of course. xmalloc is guaranteed to return
non-NULL, but apparently this isn't seen in display_utf6. The same
doesn't happen with -m64, maybe due to inlining differences, I haven't
investigated fully. Easily avoided as we hardly need to use sprintf
for a single char, or a two char string.
* objdump.c (display_utf8): Avoid bogus sprintf sanitizer warning.
Use hex ESC to switch back to default colour.
(sanitize_string): Comment. Bump buffer size by one. Fix overlong
line.
* nm.c (display_utf8, sanitize_string): As above.
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format files.
* od-pe.c: New file: Dumps fields in PE format headers.
* configure.ac (od_vectors): Add objdump_private_desc_pe for PE format targets. (od_files): Add od-pe for PE format targets.
* configure: Regenerate.
* Makefile.am (CFILES): Add od-pe.c (EXTRA_objdump_SOURCE): Likewise.
* Makefile.in: Generate.
* NEWS: Mention the new feature.
* doc/binutils.texi: Document the new support.
* objdump.c (wide_output): Change from local to global.
* objdump.h (wide_output): Prototype. (objdump_private_desc_pe): Prototype.
* testsuite/binutils-all/objdump.exp: Add a test of the new feature.
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Trying to free malloc'd memory used by the stabs and coff debug info
parsers is complicated, and traversing the trees generated requires a
lot of code. It's better to bfd_alloc the memory which allows it all
to be freed without fuss when the bfd is closed. In the process of
doing this I reverted most of commit a6336913332.
Some of the stabs handling code grows arrays of pointers with realloc,
to deal with arbitrary numbers of fields, function args, etc. The
code still does that but copies over to bfd_alloc memory when
finished. The alternative is to parse twice, once to size, then again
to populate the arrays. I think that complication is unwarranted.
Note that there is a greater than zero chance this patch breaks
something, eg. that I missed an attempt to free obj_alloc memory.
Also it seems there are no tests in the binutils testsuite aimed at
exercising objdump --debugging.
* budbg.h (finish_stab, parse_stab): Update prototypes
* debug.c: Include bucomm.h.
(struct debug_handle): Add "abfd" field.
(debug_init): Add "abfd" param. bfd_alloc handle.
(debug_xalloc, debug_xzalloc): New functions. Use throughout
in place of xmalloc and memset.
(debug_start_source): Remove "name_used" param.
* debug.h (debug_init, debug_start_source): Update prototypes.
(debug_xalloc, debug_xzalloc): Declare.
* objcopy.c (copy_object): Don't free dhandle.
* objdump.c (dump_bfd): Likewise.
* rdcoff.c (coff_get_slot): Add dhandle arg. debug_xzalloc
memory in place of xcalloc. Update callers.
(parse_coff_struct_type): Don't leak on error return. Copy
fields over to debug_xalloc memory.
(parse_coff_enum_type): Copy names and vals over the
debug_xalloc memory.
* rddbg.c (read_debugging_info): Adjust debug_init call.
Don't free dhandle.
(read_section_stabs_debugging_info): Don't free shandle.
Adjust parse_stab call. Call finish_stab on error return.
(read_symbol_stabs_debugging_info): Similarly.
* stabs.c (savestring): Delete unnecessary forward declaration.
Add dhandle param. debug_xalloc memory. Update callers.
(start_stab): Delete unnecessary casts.
(finish_stab): Add "emit" param. Free file_types, so_string,
and stabs handle.
(parse_stab): Delete string_used param. Revert code dealing
with string_used. Copy so_string passed to debug_set_filename
and stored as main_filename to debug_xalloc memory. Similarly
for string passed to debug_start_source and push_bincl. Copy
args to debug_xalloc memory. Don't leak args.
(parse_stab_enum_type): Copy names and values to debug_xalloc
memory. Don't free name.
(parse_stab_struct_type): Don't free fields.
(parse_stab_baseclasses): Delete unnecessary cast.
(parse_stab_struct_fields): Return debug_xalloc fields.
(parse_stab_cpp_abbrev): Use debug_xalloc for _vb$ type name.
(parse_stab_one_struct_field): Don't free name.
(parse_stab_members): Copy variants and methods to
debug_xalloc memory. Don't free name or argtypes.
(parse_stab_argtypes): Use debug_xalloc memory for physname
and args.
(push_bincl): Add dhandle param. Use debug_xalloc memory.
(stab_record_variable): Use debug_xalloc memory.
(stab_emit_pending_vars): Don't free var list.
(stab_find_slot): Add dhandle param. Use debug_xzalloc
memory. Update all callers.
(stab_find_tagged_type): Don't free name. Use debug_xzalloc.
(stab_demangle_qualified): Don't free name.
(stab_demangle_template): Don't free s1.
(stab_demangle_args): Tidy pvarargs refs. Copy *pargs on
success to debug_xalloc memory, free on failure.
(stab_demangle_fund_type): Don't free name.
(stab_demangle_v3_arglist): Copy args to debug_xalloc memory.
Don't free dt.
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This memcpy segfaults if symcount is -1 (=> syms is NULL).
memcpy (sorted_syms, symcount ? syms : dynsyms,
sorted_symcount * sizeof (asymbol *));
* objdump.c (slurp_symtab): Don't leave symcount as -1 after
an error.
(slurp_dynamic_symtab): Likewise for dynsymcount.
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objdump's read_section is never used for bss-style sections, so to
plug a hole that fuzzers have found, exclude sections without
SEC_HAS_CONTENTS.
* objdump.c (read_section): Report and return an error on
a no contents section.
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* objdump.c (slurp_symtab): Replace bfd_fatal calls with calls
to my_bfd_nonfatal.
(slurp_dynamic_symtab, disassemble_section): Likewise.
(disassemble_data): Replace fatal call with non_fatal call, and
set exit_status. Don't error on non-existent dynamic relocs.
Don't call bfd_fatal on bfd_canonicalize_dynamic_reloc error.
(dump_ctf, dump_section_sframe): Replace bfd_fatal calls with
calls to my_bfd_nonfatal and clean up memory.
(dump_relocs_in_section): Don't call bfd_fatal on errors.
(dump_dynamic_relocs): Likewise.
(display_any_bfd): Make archive nesting too depp non_fatal.
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bfd_nonfatal is used when a bfd error is to be printed. That's not
the case for command line errors.
* objdump.c (nonfatal): Rename to my_bfd_nonfatal.
(main): Use non_fatal and call usage on unrecognized arg errors.
Don't set exit_status when calling usage.
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Also fix ubsan "applying zero offset to null pointer".
* objdump.c (print_section_stabs): Avoid ubsan warning.
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Commit f9c36cc99518 changed (and renamed) read_section_stabs with one
difference in overall behaviour. Previously read_section_stabs would
return a NULL for an empty section, which was then treated the same as
a missing section. Now an empty section is recognized and dumped.
This leads to NULL stabp and stabs_end in print_section_stabs. Since
stabs_end - STABSIZE is then a pointer to a very large address, the
test "stabp < stabs_end - STABSIZE" succeeds.
* objdump.c (print_section_stabs): Correct STABSIZE comparison.
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I don't see much point in cluttering the source with the PROGRESS
macros, which of course do nothing at all with the definitions in
progress.h. progress.h is unchanged apart from the copyright comment
since commit d4d4c53c68f0 in 1994.
binutils/
* ar.c: Don't include progress.h, or invoke PROGRESS macros.
* nm.c: Likewise.
* objcopy.c: Likewise.
* objdump.c: Likewise.
gas/
* as.h: Don't include progress.h.
* as.c: Don't invoke PROGRESS macros.
* write.c: Likewise.
include/
* progress.h: Delete.
ld/
* ldmain.c: Don't include progress.h, or invoke PROGRESS macros.
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This function is used to read sections other than stabs, and there is
now another version of it that extracts different info from the bfd
section. Rename it and return the bfd section instead of assorted
fields of the bfd section.
* objcopy.c (read_section): Renamed from read_section_stabs.
Delete size_ptr and entsize_ptr params, add contents param.
Return asection pointer. Don't unnecessarily free contents on
failure from bfd_malloc_and_get_section.
(find_stabs_section): Use read_section.
(dump_ctf, dump_section_sframe): Likewise.
(read_section_sframe): Delete.
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* objdump.c (find_stabs_section): Free stabs.
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There is some inconsistency between the behaviour of objdump -D and
objdump -s, both supposedly operating on all sections by default.
objdump -s ignores bss sections, while objdump -D dissassembles the
zeros. Fix this by making objdump -D ignore bss sections too.
Furthermore, "objdump -s -j .bss" doesn't dump .bss as it should,
since the user is specifically asking to look at all those zeros.
This change does find some tests that used objdump -D with expected
output in bss-style sections. I've updated all the msp430 tests that
just wanted to find a non-empty section to look at section headers
instead, making the tests slightly more stringent. The ppc xcoff and
spu tests are fixed by adding -j options to objdump, which makes the
tests somewhat more lenient.
binutils/
* objdump.c (disassemble_section): Ignore sections without
contents, unless overridden by -j.
(dump_section): Allow -j to override the default of not
displaying sections without contents.
* doc/binutils.texi (objdump options): Update -D, -s and -j
description.
gas/
* testsuite/gas/ppc/xcoff-tls-32.d: Select wanted objdump
sections with -j.
* testsuite/gas/ppc/xcoff-tls-64.d: Likewise.
ld/
* testsuite/ld-msp430-elf/main-bss-lower.d,
* testsuite/ld-msp430-elf/main-bss-upper.d,
* testsuite/ld-msp430-elf/main-const-lower.d,
* testsuite/ld-msp430-elf/main-const-upper.d,
* testsuite/ld-msp430-elf/main-text-lower.d,
* testsuite/ld-msp430-elf/main-text-upper.d,
* testsuite/ld-msp430-elf/main-var-lower.d,
* testsuite/ld-msp430-elf/main-var-upper.d: Expect -wh output.
* testsuite/ld-msp430-elf/msp430-elf.exp: Use objdump -wh
rather than objdump -D or objdump -d with tests checking for
non-empty given sections.
* testsuite/ld-spu/ear.d,
* testsuite/ld-spu/icache1.d,
* testsuite/ld-spu/ovl.d,
* testsuite/ld-spu/ovl2.d: Select wanted objdump sections.
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If file size is calculated by bfd_get_file_size, as it is by
_bfd_alloc_and_read calls in coff_object_p, then it is cached and when
pe_ILF_build_a_bfd converts an archive entry over to BFD_IN_MEMORY,
the file size is no longer valid. Found when attempting objdump -t on
a very small (27 bytes) ILF file and hitting the pr24707 fix (commit
781152ec18f5). So, clear file size when setting BFD_IN_MEMORY on bfds
that may have been read. (It's not necessary in writable bfds,
because caching is ignored by bfd_get_size when bfd_write_p.)
I also think the PR 24707 fix is no longer neeeded. All of the
testcases in that PR and in PR24712 are caught earlier by file size
checks when reading the symbols from file. So I'm reverting that fix,
which just compared the size of an array of symbol pointers against
file size. That's only valid if on-disk symbols are larger than a
host pointer, so the test is better done in format-specific code.
bfd/
* coff-alpha.c (alpha_ecoff_get_elt_at_filepos): Clear cached
file size when making a BFD_IN_MEMORY bfd.
* opncls.c (bfd_make_readable): Likewise.
* peicode.h (pe_ILF_build_a_bfd): Likewise.
binutils/
PR 24707
* objdump.c (slurp_symtab): Revert PR24707 fix. Tidy.
(slurp_dynamic_symtab): Tidy.
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If objdump is used with both --disassemble=symbol and --reloc options
skip relocations that have addresses before the symbol, so that they
are not displayed.
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The newer update-copyright.py fixes file encoding too, removing cr/lf
on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and
embedded cr in binutils/testsuite/binutils-all/ar.exp string match.
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parsing a corrupt ELF file.
PR 29924
* objdump.c (load_specific_debug_section): Check for excessively
large sections.
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ChangeLog:
* binutils/objdump.c (dump_section_sframe): free up contents and
SFrame decoder context on exit.
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Fixes a fuzzed object file problem where plt relocs were manipulated
in such a way that two synthetic symbols were generated at the same
plt location. Won't occur in real object files.
PR 29846
PR 20337
* objdump.c (compare_symbols): Test symbol flags to exclude
section and synthetic symbols before attempting to check flavour.
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* objdump.c (load_specific_debug_section): Use PRIx64 format.
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This extends the commit 4581a1c7d304 fix to more targets, which
hardens BFD a little. I think the real underlying problem was the
bfd_canonicalize_reloc call in load_specific_debug_section which
passed a NULL for "symbols". Fix that too.
PR 22509
bfd/
* aoutx.h (swap_ext_reloc_out): Gracefully handle NULL symbols.
* i386lynx.c (swap_ext_reloc_out): Likewise.
* pdp11.c (pdp11_aout_swap_reloc_out): Likewise.
* coff-tic30.c (reloc_processing): Likewise.
* coff-tic4x.c (tic4x_reloc_processing): Likewise.
* coff-tic54x.c (tic54x_reloc_processing): Likewise.
* coff-z80.c (reloc_processing): Likewise.
* coff-z8k.c (reloc_processing): Likewise.
* ecoff.c (ecoff_slurp_reloc_table): Likewise.
* som.c (som_set_reloc_info): Likewise.
binutils/
* objdump.c (load_specific_debug_section): Pass syms to
bfd_canonicalize_reloc.
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This patch adds support for SFrame in readelf and objdump. The arguments
of --sframe are optional for both readelf and objdump.
include/ChangeLog:
* sframe-api.h (dump_sframe): New function declaration.
ChangeLog:
* binutils/Makefile.am: Add dependency on libsframe for
readelf and objdump.
* binutils/Makefile.in: Regenerate.
* binutils/doc/binutils.texi: Document --sframe=[section].
* binutils/doc/sframe.options.texi: New file.
* binutils/objdump.c: Add support for SFrame format.
* binutils/readelf.c: Likewise.
* include/sframe-api.h: Add new API for dumping .sframe
section.
* libsframe/Makefile.am: Add sframe-dump.c.
* libsframe/Makefile.in: Regenerate.
* libsframe/sframe-dump.c: New file.
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default.
PR 29457
* configure.ac: Add --enable-colored-disassembly.
* objdump.c: Add --disassembler-color=terminal.
* doc/binutils.texi (objdump): Document the new option.
* NEWS: Mention new feature.
* config.in: Regenerate in.
* configure: Regenerate.
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bfd_canonicalize_reloc returns -1L on errors.
* objdump.c (load_specific_debug_section): Properly handle
error return from bfd_canonicalize_reloc.
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