There were a number of problems with the previous patch. Firstly,
_bfd_dwarf2_stash_syms didn't do anything when the original file had
dynamic symbols, and secondly, info found by the symbol search didn't
make it out of _bfd_elf_find_nearest_line except in the case of DWARF
functions without external linkage.
PR 23652
* dwarf2.c (_bfd_dwarf2_stash_syms): Break out of loop on finding
matching section.
(_bfd_dwarf2_find_nearest_line): Return an int, with value 2 when
returning info from the symbol table. Do the _bfd_elf_find_function
search also when !found. Call _bfd_dwarf2_stash_syms regardless of
symbols.
* elf64-alpha.c (elf64_alpha_find_nearest_line): Accept dwarf2
result of 1 only.
* elfxx-mips.c (_bfd_mips_elf_find_nearest_line): Likewise.
* libbfd-in.h (_bfd_dwarf2_find_nearest_line): Update prototype.
* libbfd.h: Regenerate.
Sometimes DWARF info for a function is incomplete, and the function
can be retrieved by examining symbols. However, when separate debug
files are used it may be that the original file is completely
stripped of symbols. This patch teaches BFD to look at symbols from
the debug file in that case.
The patch also removes arm_elf_find_function, instead implementing
elf_backend_maybe_function_sym. arm_elf_find_function was written
before the generic _bfd_elf_find_function called maybe_function_sym.
aarch64 copied arm, so that file gets the same treatment. There is
some chance this will speed up arm and aarch64 lookup of function/line.
PR 23652
* dwarf2.c (_bfd_dwarf2_stash_syms): New function.
(_bfd_dwarf2_find_nearest_line): Use it here, passing syms to
_bfd_elf_find_function. Call _bfd_elf_find_function in cases
where _bfd_elf_find_nearest_line would do so.
* elf.c (_bfd_elf_find_nearest_line): Omit _bfd_elf_find_function
for dwarf2.
* elfxx-mips.c (_bfd_mips_elf_find_nearest_line): Similarly. Tidy.
* elf32-arm.c (elf32_arm_maybe_function_sym): New function.
(elf_backend_maybe_function_sym): Define.
(arm_elf_find_function, elf32_arm_find_nearest_line): Delete.
(bfd_elf32_find_nearest_line): Don't define.
* elfnn-aarch64.c (elfNN_aarch64_maybe_function_sym): New function.
(elf_backend_maybe_function_sym): Define.
(aarch64_elf_find_function, elfNN_aarch64_find_nearest_line): Delete.
(bfd_elfNN_find_nearest_line): Don't define.
Using bfd_vma for insn is to avoid having to worry about sign
propagation in expressions involving insn and sym_value when bfd_vma
is not the same as unsigned long.
* elf32-sh.c (sh_reloc): Use a bfd_vma insn.
(sh_reloc <R_SH_IND12W>): Divide calculated relocation value
by two before applying to insn. Correct overflow test.
* coff-sh.c (sh_reloc): Likewise.
and other tidies. I think it's better to default to passing the
section to bfd_octets_per_byte, even in cases where we know it won't
make a difference.
A number of the coff reloc functions used bfd_octets_per_byte wrongly,
not factoring it into the offset into the data buffer. As it happens,
the targets using those files always had bfd_octets_per_byte equal to
one, so there wasn't any detectable wrong behaviour. However, it is
wrong in the source and might cause trouble for anyone creating a new
target. Besides fixing that, the patch also defines OCTETS_PER_BYTE
as one in target files where that is appropriate.
bfd/
* archures.c (bfd_octets_per_byte): Tail call
bfd_arch_mach_octets_per_byte.
* coff-arm.c (OCTETS_PER_BYTE): Define.
(coff_arm_reloc): Introduce new "octets" temp. Use OCTETS_PER_BYTE
with section. Correct "addr". Remove ATTRIBUTE_UNUSED.
* coff-i386.c (coff_i386_reloc): Similarly.
* coff-mips.c (mips_reflo_reloc): Similarly.
* coff-x86_64.c (coff_amd64_reloc): Similarly.
* elf32-msp430.c (OCTETS_PER_BYTE): Define.
(rl78_sym_diff_handler): Use OCTETS_PER_BYTE, with section.
* elf32-nds32.c (nds32_elf_get_relocated_section_contents): Similarly.
* elf32-ppc.c (ppc_elf_addr16_ha_reloc): Similarly.
* elf32-pru.c (pru_elf32_do_ldi32_relocate): Similarly.
* elf32-s12z.c (opru18_reloc): Similarly.
* elf32-sh.c (sh_elf_reloc): Similarly.
* elf32-spu.c (spu_elf_rel9): Similarly.
* elf32-xtensa.c (bfd_elf_xtensa_reloc): Similarly.
* elf64-ppc.c (ppc64_elf_ha_reloc, ppc64_elf_brtaken_reloc),
(ppc64_elf_toc64_reloc): Similarly.
* bfd.c (bfd_get_section_limit): Pass section to bfd_octets_per_byte.
* cofflink.c (_bfd_coff_link_input_bfd),
(_bfd_coff_reloc_link_order): Likewise.
* elf.c (_bfd_elf_section_offset): Likewise.
* elflink.c (resolve_section, bfd_elf_perform_complex_relocation),
(elf_link_input_bfd, elf_reloc_link_order, elf_fixup_link_order),
(bfd_elf_final_link): Likewise.
* elf.c (_bfd_elf_make_section_from_shdr): Don't strncmp twice
to set SEC_ELF_OCTETS.
* reloc.c (bfd_perform_relocation): Tidy SEC_ELF_OCTETS special case.
(bfd_install_relocation): Likewise.
(_bfd_final_link_relocate): Don't recalculate octets.
* syms.c (_bfd_stab_section_find_nearest_line): Introduc new
"octets" temp.
* bfd-in2.h: Regenerate.
ld/
* ldexp.c (fold_name): Pass section to bfd_octets_per_byte.
* ldlang.c (init_opb): Don't call bfd_arch_mach_octets_per_byte
unnecessarily.
All symbols, sizes and relocations in this section are octets instead of
bytes. Required for DWARF debug sections as DWARF information is
organized in octets, not bytes.
bfd/
* section.c (struct bfd_section): New flag SEC_ELF_OCTETS.
* archures.c (bfd_octets_per_byte): New parameter sec.
If section is not NULL and SEC_ELF_OCTETS is set, one octet es
returned [ELF targets only].
* bfd.c (bfd_get_section_limit): Provide section parameter to
bfd_octets_per_byte.
* bfd-in2.h: regenerate.
* binary.c (binary_set_section_contents): Move call to
bfd_octets_per_byte into section loop. Provide section parameter
to bfd_octets_per_byte.
* coff-arm.c (coff_arm_reloc): Provide section parameter
to bfd_octets_per_byte.
* coff-i386.c (coff_i386_reloc): likewise.
* coff-mips.c (mips_reflo_reloc): likewise.
* coff-x86_64.c (coff_amd64_reloc): likewise.
* cofflink.c (_bfd_coff_link_input_bfd): likewise.
(_bfd_coff_reloc_link_order): likewise.
* elf.c (_bfd_elf_section_offset): likewise.
(_bfd_elf_make_section_from_shdr): likewise.
Set SEC_ELF_OCTETS for sections with names .gnu.build.attributes,
.debug*, .zdebug* and .note.gnu*.
* elf32-msp430.c (rl78_sym_diff_handler): Provide section parameter
to bfd_octets_per_byte.
* elf32-nds.c (nds32_elf_get_relocated_section_contents): likewise.
* elf32-ppc.c (ppc_elf_addr16_ha_reloc): likewise.
* elf32-pru.c (pru_elf32_do_ldi32_relocate): likewise.
* elf32-s12z.c (opru18_reloc): likewise.
* elf32-sh.c (sh_elf_reloc): likewise.
* elf32-spu.c (spu_elf_rel9): likewise.
* elf32-xtensa.c (bfd_elf_xtensa_reloc): likewise
* elf64-ppc.c (ppc64_elf_brtaken_reloc): likewise.
(ppc64_elf_addr16_ha_reloc): likewise.
(ppc64_elf_toc64_reloc): likewise.
* elflink.c (bfd_elf_final_link): likewise.
(bfd_elf_perform_complex_relocation): likewise.
(elf_fixup_link_order): likewise.
(elf_link_input_bfd): likewise.
(elf_link_sort_relocs): likewise.
(elf_reloc_link_order): likewise.
(resolve_section): likewise.
* linker.c (_bfd_generic_reloc_link_order): likewise.
(bfd_generic_define_common_symbol): likewise.
(default_data_link_order): likewise.
(default_indirect_link_order): likewise.
* srec.c (srec_set_section_contents): likewise.
(srec_write_section): likewise.
* syms.c (_bfd_stab_section_find_nearest_line): likewise.
* reloc.c (_bfd_final_link_relocate): likewise.
(bfd_generic_get_relocated_section_contents): likewise.
(bfd_install_relocation): likewise.
For section which have SEC_ELF_OCTETS set, multiply output_base
and output_offset with bfd_octets_per_byte.
(bfd_perform_relocation): likewise.
include/
* coff/ti.h (GET_SCNHDR_SIZE, PUT_SCNHDR_SIZE, GET_SCN_SCNLEN),
(PUT_SCN_SCNLEN): Adjust bfd_octets_per_byte calls.
binutils/
* objdump.c (disassemble_data): Provide section parameter to
bfd_octets_per_byte.
(dump_section): likewise
(dump_section_header): likewise. Show SEC_ELF_OCTETS flag if set.
gas/
* as.h: Define SEC_OCTETS as SEC_ELF_OCTETS if OBJ_ELF.
* dwarf2dbg.c: (dwarf2_finish): Set section flag SEC_OCTETS for
.debug_line, .debug_info, .debug_abbrev, .debug_aranges, .debug_str
and .debug_ranges sections.
* write.c (maybe_generate_build_notes): Set section flag
SEC_OCTETS for .gnu.build.attributes section.
* frags.c (frag_now_fix): Don't divide by OCTETS_PER_BYTE if
SEC_OCTETS is set.
* symbols.c (resolve_symbol_value): Likewise.
ld/
* ldexp.c (fold_name): Provide section parameter to
bfd_octets_per_byte.
* ldlang (init_opb): New argument s. Set opb_shift to 0 if
SEC_ELF_OCTETS for the current section is set.
(print_input_section): Pass current section to init_opb.
(print_data_statement,print_reloc_statement,
print_padding_statement): Likewise.
(lang_check_section_addresses): Call init_opb for each
section.
(lang_size_sections_1,lang_size_sections_1,
lang_do_assignments_1): Likewise.
(lang_process): Pass NULL to init_opb.
This code in elf_link_add_object_symbols:
ret = elf_add_dt_needed_tag (abfd, info, soname, add_needed);
if (ret < 0)
goto error_return;
/* If we have already included this dynamic object in the
link, just ignore it. There is no reason to include a
particular dynamic object more than once. */
if (ret > 0)
return TRUE;
prevents a shared library from being loaded twice by ensuring that any
library soname doesn't match the soname of one already loaded. This
happens before sym_hashes are allocated, which leaves sym_hashes NULL.
cmse_scan looks at library symbols, and when attempting to look up a
global symbol will segfault if sym_hashes is zero.
* elf32-arm.c (elf32_arm_size_stubs): Exclude dynamic library
BFDs that have not been loaded.
The testcase in this PR triggered "BFD_ASSERT (p2->is_sym)" by
sneakily generating a C_FILE sym whose value pointed into auxents.
The fix then is in the last changed line of this patch, to check
p->is_sym as well as p->u.syment.n_sclass. The other changes fix
various overflow checks that weren't as solid as they could be.
PR 25197
* coffgen.c (coff_find_nearest_line_with_names): Check that C_FILE
u.syment.n_value does point at another C_FILE sym and not into
some auxent that happens to look like a C_FILE. Properly check
for integer overflow and avoid possible pointer wrap-around.
Simplify pr17512 checks.
This patch renames elf_backend_modify_program_headers and moves the
elf.c code tweaking the ELF file header for -pie -Ttext-segment to a
new function, _bfd_elf_modify_headers, which then becomes the default
elf_backed_modify_headers and is called from any other target
elf_backed_modify_headers.
* elf-bfd.h (struct elf_backend_data <elf_backend_modify_headers>):
Rename from elf_backend_modify_program_headers.
(_bfd_elf_modify_headers): Declare.
* elf.c (assign_file_positions_except_relocs): Set
elf_program_header_size. Always call elf_backend_modify_headers.
Extract code modifying file header..
(_bfd_elf_modify_headers): ..to here. New function.
* elf32-arm.c (elf_backend_modify_headers): Renamed from
elf_backend_modify_program_headers.
* elf32-i386.c: Similarly.
* elf64-x86-64.c: Similarly.
* elfxx-target.h: Similarly. Default elf_backend_modify_headers
to _bfd_elf_modify_headers.
* elf-nacl.h (nacl_modify_headers): Rename from
nacl_modify_program_headers.
* elf-nacl.c (nacl_modify_headers): Rename from
nacl_modify_program_headers and call _bfd_elf_modify_headers.
* elf32-rx.c (elf32_rx_modify_headers): Similarly.
* elf32-spu.c (spu_elf_modify_headers): Similarly.
* elfnn-ia64.c (elfNN_ia64_modify_headers): Similarly.
* elf32-sh.c (elf_backend_modify_program_headers): Don't undef.
This patch introduces a new "sorry, cannot handle this file" bfd error
status. The idea is to use this error in cases where bfd hasn't found
a bfd_bad_value error, ie. an input file or set of options that are
invalid, but rather an input file that is simply too difficult to
process. Typically this might happen with fuzzed object files such as
the one in the PR, a wildly improbable core file. Some things are
just not worth wasting time over to fix "properly".
PR 25196
* bfd.c (bfd_error_type): Add bfd_error_sorry.
(bfd_errmsgs): Likewise.
* elf.c (rewrite_elf_program_header): Don't abort on confused
lma/alignment. Replace bfd_error_bad_value with bfd_error_sorry.
(_bfd_elf_validate_reloc): Use bfd_error_sorry.
(_bfd_elf_final_write_processing): Likewise.
* bfd-in2.h: Regenerate.
Make _bfd_riscv_relax_call handle section alignment padding same as
the _bfd_riscv_relax_lui and _bfd_riscv_relax_pc functions already
do. Use the max section alignment if section boundaries are crossed,
otherwise the alignment of the containing section.
bfd/
PR 25181
* elfnn-riscv.c (_bfd_riscv_relax_call): Always add max_alignment to
foff. If sym_sec->output_section and sec->output_section are the same
and not *ABS* then set max_alignment to that section's alignment.
ld/
PR 25181
* testsuite/ld-riscv-elf/call-relax-0.s: New file.
* testsuite/ld-riscv-elf/call-relax-1.s: New file.
* testsuite/ld-riscv-elf/call-relax-2.s: New file.
* testsuite/ld-riscv-elf/call-relax-3.s: New file.
* testsuite/ld-riscv-elf/call-relax.d: New test.
* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run call-relax test.
Change-Id: Iaf65cee52345abf1955f36e8e72c4f6cc0db8d9a
I think it is past time to remove CR16C support. CR16C was added in
2004, and only for ld. gas and binutils support is lacking, and there
have been no commits to bfd/elf32-cr16c.c other than warning fixes or
global maintainers making changes to all targets. I see no maintainer
listed for CR16C, and no commits from anyone at NSC supporting the
target. Furthermore, at the time the CR16 support was added in 2007,
config.sub was changed upstream to no longer recognise cr16c as a
valid cpu. That means the CR16C ld support is only available as a
secondary target by configuring with, for example,
--enable-targets=all or --enable-targets=cr16c-unknown-elf. No
testing of the CR16C target is possible.
include/
* elf/cr16c.h: Delete.
bfd/
* cpu-cr16c.c: Delete.
* elf32-cr16c.c: Delete.
* Makefile.am,
* archures.c,
* config.bfd,
* configure.ac,
* reloc.c,
* targets.c: Remove cr16c support.
* Makefile.in,
* bfd-in2.h,
* configure,
* libbfd.h,
* po/SRC-POTFILES.in: Regenerate.
ld/
* emulparams/elf32cr16c.sh: Delete.
* scripttempl/elf32cr16c.sc: Delete.
* Makefile.am,
* configure.tgt: Remove cr16c support.
* NEWS: Mention removal of cr16c.
* Makefile.in,
* po/BLD-POTFILES.in: Regenerate.
* doc/chew.c (add_to_definition): Use correct type when
calculating size of array reallocation.
(nextword): Always initialise the word return parameter.
(compile): Check return value of nextword().
* elf-bfd.h (elf_backend_data) <elf_backend_core_find_build_id>:
New field.
(_bfd_elf32_core_find_build_id, _bfd_elf64_core_find_build_id):
New functions.
(elf_read_notes): Add declaration.
* elf.c (elf_read_notes): Move elf-bfd.h.
(_bfd_elf_core_find_build_id): New function.
(bfd_section_from_phdr): Scan core file PT_LOAD segments for
build-id if none is known.
(elf_parse_notes): For core files, scan for notes.
* elfcore.h (elf_core_file_matches_executable_p): If both
BFDs have identical build-ids, then they match.
(_bfd_elf_core_find_build_id): New function.
* elfxx-target.h (elf_backend_core_find_build_id): Define.
(elfNN_bed): Add elf_backend_core_find_build_id.
* libcoff-in.h (struct pe_tdata): Add dos_message field.
* libcoff.h: Regenerate.
* peXXigen.c (_bfd_XXi_only_swap_filehdr_out): Copy the
dos_message field rather than initialising it.
(_bfd_XX_bfd_copy_private_bfd_data_common): Copy the dos_message
field.
* peicode.h (pe_mkobject): Initialise the dos_message field.
(pe_mkobject_hook): Copy the dos_message field.
(pe_bfd_object_p): Copy the dos_message field.
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