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When PIC is needed, linker should suggest -fPIE, instead of -fPIC, when
not building shared object.
bfd/
* elf64-x86-64.c (elf_x86_64_need_pic): Suggest -fPIE when not
building shared object.
* elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Likewise.
ld/
* testsuite/ld-i386/i386.exp: Run pr18801a and pr18801b instead
of pr18801.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr18801.d: Removed.
* testsuite/ld-x86-64/pr18801.d: Likewise.
* testsuite/ld-i386/pr18801a.d: New file.
* testsuite/ld-i386/pr18801b.d: Likewise.
* testsuite/ld-x86-64/pr18801a.d: Likewise.
* testsuite/ld-x86-64/pr18801b.d: Likewise.
* testsuite/ld-x86-64/pie2.d: Suggest -fPIE instead of -fPIC.
* testsuite/ld-x86-64/pie2.d: Likewise.
* testsuite/ld-x86-64/pr19719.d: Likewise.
* testsuite/ld-x86-64/pr19807-2a.d: Likewise.
* testsuite/ld-x86-64/pr19969.d: Likewise.
* testsuite/ld-x86-64/pr21997-1a.err: Likewise.
* testsuite/ld-x86-64/pr21997-1b.err: Likewise.
* testsuite/ld-x86-64/pr22001-1a.err: Likewise.
* testsuite/ld-x86-64/pr22001-1b.err: Likewise.
* testsuite/ld-x86-64/pr22791-1.err: Likewise.
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Instead of BFD_ASSERT (h != NULL) with
ld: BFD ... assertion fail .../bfd/elf64-x86-64.c:2562
ld: bad.o: invalid string offset 50331648 >= 371 for section `nterp'
check corrupt VTENTRY entry in bfd_elf_gc_record_vtentry with
ld: bad.o: section 'g': corrupt VTENTRY entry
* elf-m10300.c (mn10300_elf_check_relocs): Remove BFD_ASSERT of
"h != NULL". Don't check "h != NULL" before calling.
bfd_elf_gc_record_vtentry.
* elf32-arm.c (elf32_arm_check_relocs): Likewise.
* elf32-bfin.c (bfin_check_relocs): Likewise.
* elf32-cris.c (cris_elf_check_relocs): Likewise.
* elf32-csky.c (csky_elf_check_relocs): Likewise.
* elf32-d10v.c (elf32_d10v_check_relocs): Likewise.
* elf32-dlx.c (elf32_dlx_check_relocs): Likewise.
* elf32-fr30.c (fr30_elf_check_relocs): Likewise.
* elf32-frv.c (elf32_frv_check_relocs): Likewise.
* elf32-hppa.c (elf32_hppa_check_relocs): Likewise.
* elf32-i386.c (elf_i386_check_relocs): Likewise.
* elf32-iq2000.c (iq2000_elf_check_relocs): Likewise.
* elf32-m32r.c (m32r_elf_check_relocs): Likewise.
* elf32-m68hc1x.c (elf32_m68hc11_check_relocs): Likewise.
* elf32-m68k.c (elf_m68k_check_relocs): Likewise.
* elf32-mcore.c (mcore_elf_check_relocs): Likewise.
* elf32-metag.c (elf_metag_check_relocs): Likewise.
* elf32-or1k.c (or1k_elf_check_relocs): Likewise.
* elf32-ppc.c (ppc_elf_check_relocs): Likewise.
* elf32-s390.c (elf_s390_check_relocs): Likewise.
* elf32-sh.c (sh_elf_check_relocs): Likewise.
* elf32-v850.c (v850_elf_check_relocs): Likewise.
* elf32-vax.c (elf_vax_check_relocs): Likewise.
* elf32-xstormy16.c (xstormy16_elf_check_relocs): Likewise.
* elf32-xtensa.c (elf_xtensa_check_relocs): Likewise.
* elf64-mmix.c (mmix_elf_check_relocs): Likewise.
* elf64-ppc.c (ppc64_elf_check_relocs): Likewise.
* elf64-s390.c (elf_s390_check_relocs): Likewise.
* elf64-x86-64.c (elf_s390_check_relocs): Likewise.
* elfxx-mips.c (_bfd_mips_elf_check_relocs): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_check_relocs): Likewise.
* elflink.c (bfd_elf_gc_record_vtinherit): Check for corrupt
VTENTRY entry.
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Remove x86-specific linker options from bfd_link_info and put them in
elf_linker_x86_params. Add _bfd_elf_linker_x86_set_options to pass
x86-specific linker options from ld to bfd.
bfd/
* elf-linker-x86.h: New file.
* elf32-i386.c (elf_i386_convert_load_reloc): Use htab->params
to get x86-specific linker options.
* elf64-x86-64.c (elf_x86_64_convert_load_reloc): Likewise.
(elf_x86_64_check_relocs): Likewise.
(elf_x86_64_relocate_section): Likewise.
(elf_x86_64_link_setup_gnu_properties): Likewise.
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Likewise.
(_bfd_x86_elf_link_setup_gnu_properties): Likewise.
(_bfd_elf_linker_x86_set_options): New function.
* elfxx-x86.h: Include "elf-linker-x86.h".
(elf_x86_link_hash_table): Add params.
include/
* bfdlink.h (bfd_link_info): Remove x86-specific linker options.
ld/
* Makefile.am (ELF_X86_DEPS): Add $(srcdir)/emultempl/elf-x86.em.
(eelf_i386_sol2.c): Also depend on
$(srcdir)/emultempl/solaris2-x86.em.
(eelf_x86_64_sol2.c): Likewise.
* Makefile.in: Regenerated.
* emulparams/call_nop.sh: Set x86-specific linker options via
params.
* emulparams/cet.sh: Likewise.
* emulparams/reloc_overflow.sh: Likewise.
* emulparams/elf32_x86_64.sh (EXTRA_EM_FILE): New. Set to
"elf-x86".
* emulparams/elf_i386.sh: Likewise.
* emulparams/elf_i386_be.sh: Likewise.
* emulparams/elf_i386_chaos.sh: Likewise.
* emulparams/elf_i386_ldso.sh: Likewise.
* emulparams/elf_i386_vxworks.sh: Likewise.
* emulparams/elf_iamcu.sh: Likewise.
* emulparams/elf_k1om.sh: Likewise.
* emulparams/elf_l1om.sh: Likewise.
* emulparams/elf_x86_64.sh: Likewise.
* emulparams/elf_i386_sol2.sh (EXTRA_EM_FILE): Changed to
"solaris2-x86".
* emulparams/elf_x86_64_sol2.sh: Likewise.
* emultempl/elf-x86.em: New file.
* emultempl/solaris2-x86.em: Likewise.
* emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Don't
set link_info.call_nop_byte.
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PR ld/24338
* elf64-x86-64.c (elf_x86_64_relocate_section): Check for corrupt
input with bad relocation.
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* elf64-x86-64.c (elf_x86_64_relocate_section): Re-indent.
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Skip symbol defined by linker when checking copy reloc on protected
symbol.
bfd/
PR ld/24276
* elf64-x86-64.c (elf_x86_64_check_relocs): Skip symbol defined
by linker when checking copy reloc on protected symbol.
ld/
PR ld/24276
* testsuite/ld-i386/i386.exp: Run PR ld/24276 test.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr24276.dso: New file.
* testsuite/ld-i386/pr24276.warn: Likewise.
* testsuite/ld-x86-64/pr24276.dso: Likewise.
* testsuite/ld-x86-64/pr24276.warn: Likewise.
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commit bd7ab16b4537788ad53521c45469a1bdae84ad4a
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Feb 13 07:34:22 2018 -0800
x86-64: Generate branch with PLT32 relocation
removed check R_X86_64_PC32 relocation against protected symbols in
shared objects. Since elf_x86_64_check_relocs is called after we
have seen all input files, we can check for PC-relative relocations in
elf_x86_64_check_relocs. We should not allow PC-relative relocations
against protected symbols since address of protected function and
location of protected data may not be in the shared object.
bfd/
PR ld/24151
* elf64-x86-64.c (elf_x86_64_need_pic): Check
SYMBOL_DEFINED_NON_SHARED_P instead of def_regular.
(elf_x86_64_relocate_section): Move PIC check for PC-relative
relocations to ...
(elf_x86_64_check_relocs): Here.
(elf_x86_64_finish_dynamic_symbol): Use SYMBOL_DEFINED_NON_SHARED_P
to check if a symbol is defined in a non-shared object.
* elfxx-x86.h (SYMBOL_DEFINED_NON_SHARED_P): New.
ld/
PR ld/24151
* testsuite/ld-x86-64/pr24151a-x32.d: New file.
* testsuite/ld-x86-64/pr24151a.d: Likewise.
* testsuite/ld-x86-64/pr24151a.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run pr24151a and pr24151a-x32.
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* elf32-i386.c (elf_i386_relocate_section): Call
elf_i386_rtype_to_howto to get reloc_howto_type pointer.
* elf64-x86-64.c (elf_x86_64_relocate_section): Call
elf_x86_64_rtype_to_howto to get reloc_howto_type pointer.
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All of the backend relocate_section functions that interpret reloc
numbers assuming the input file is of the expected type (ie. same as
output or very similar) really ought to be checking input file type.
Not many do, and those that do currently just assert. This patch
replaces the assertion with a more graceful exit.
PR 23980
* elf32-i386.c (elf_i386_relocate_section): Exit with wrong format
error rather than asserting input file is as expected.
* elf32-s390.c (elf_s390_relocate_section): Likewise.
* elf32-sh.c (sh_elf_relocate_section): Likewise.
* elf32-xtensa.c (elf_xtensa_relocate_section): Likewise.
* elf64-ppc.c (ppc64_elf_relocate_section): Likewise.
* elf64-s390.c (elf_s390_relocate_section): Likewise.
* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
* elf32-ppc.c (ppc_elf_relocate_section): Exit with wrong format
error if input file is not ppc32 ELF.
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This PR shows a fuzzed binary triggering a segfault via a bad
relocation in .debug_line. It turns out that unlike normal
relocations applied to a section, the linker applies those with
symbols from discarded sections via _bfd_clear_contents without
checking that the relocation is within the section bounds. The same
thing now happens when reading debug sections since commit
a4cd947aca23, the PR23425 fix.
PR 23770
PR 23425
* reloc.c (_bfd_clear_contents): Replace "location" param with
"buf" and "off". Bounds check "off". Return status.
* cofflink.c (_bfd_coff_generic_relocate_section): Update
_bfd_clear_contents call.
* elf-bfd.h (RELOC_AGAINST_DISCARDED_SECTION): Likewise.
* elf32-arc.c (elf_arc_relocate_section): Likewise.
* elf32-i386.c (elf_i386_relocate_section): Likewise.
* elf32-metag.c (metag_final_link_relocate): Likewise.
* elf32-nds32.c (nds32_elf_get_relocated_section_contents): Likewise.
* elf32-ppc.c (ppc_elf_relocate_section): Likewise.
* elf32-visium.c (visium_elf_relocate_section): Likewise.
* elf64-ppc.c (ppc64_elf_relocate_section): Likewise.
* elf64-x86-64.c *(elf_x86_64_relocate_section): Likewise.
* libbfd-in.h (_bfd_clear_contents): Update prototype.
* libbfd.h: Regenerate.
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We need to clear the R_X86_64_converted_reloc_bit bit after setting it
to avoid leaking it out by --emit-relocs.
bfd/
PR ld/23324
* elf64-x86-64.c (elf_x86_64_relocate_section): Clear the
R_X86_64_converted_reloc_bit bit.
ld/
PR ld/23324
* testsuite/ld-x86-64/pr23324.s: New file.
* testsuite/ld-x86-64/pr23324a.d: Likewise.
* testsuite/ld-x86-64/pr23324b.d: Likewise.
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ENDBR64 is added to the special TLSDESC entry, which is similar to the
PLT0 entry, in the x86-64 lazy procedure linkage table to support Intel
CET. The NaCl PLT is different from the normal PLT. This patch adds
plt_tlsdesc_entry, plt_tlsdesc_entry_size, plt_tlsdesc_got1_offset,
plt_tlsdesc_got2_offset, plt_tlsdesc_got1_insn_end and
plt_tlsdesc_got2_insn_end to elf_x86_lazy_plt_layout to support both
normal and NaCl TLSDESC entries. This fixed
FAIL: TLS descriptor -fpic -shared transitions
for x86_64-nacl.
* elf32-i386.c (elf_i386_lazy_plt): Add plt_tlsdesc_entry,
plt_tlsdesc_entry_size, plt_tlsdesc_got1_offset,
plt_tlsdesc_got2_offset, plt_tlsdesc_got1_insn_end and
plt_tlsdesc_got2_insn_end for TLSDESC entry.
(elf_i386_lazy_ibt_plt): Likewise.
(elf_i386_nacl_plt): Likewise.
* elf64-x86-64.c (tlsdesc_plt_entry): Moved and renamed to ...
(elf_x86_64_tlsdesc_plt_entry): This.
(elf_x86_64_lazy_plt): Add plt_tlsdesc_entry,
plt_tlsdesc_entry_size, plt_tlsdesc_got1_offset,
plt_tlsdesc_got2_offset, plt_tlsdesc_got1_insn_end and
plt_tlsdesc_got2_insn_end for TLSDESC entry.
(elf_x86_64_lazy_bnd_plt): Likewise.
(elf_x86_64_lazy_ibt_plt): Likewise.
(elf_x32_lazy_ibt_plt): Likewise.
(elf_x86_64_nacl_plt): Likewise.
(elf_x86_64_finish_dynamic_sections): Use plt_tlsdesc_entry,
plt_tlsdesc_entry_size, plt_tlsdesc_got1_offset,
plt_tlsdesc_got2_offset, plt_tlsdesc_got1_insn_end and
plt_tlsdesc_got2_insn_end to update TLSDESC entry.
* elfxx-x86.h (elf_x86_lazy_plt_layout): Update comments.
Add plt_tlsdesc_entry, plt_tlsdesc_entry_size,
plt_tlsdesc_got1_offset, plt_tlsdesc_got2_offset,
plt_tlsdesc_got1_insn_end and plt_tlsdesc_got2_insn_end.
(elf_x86_non_lazy_plt_layout): Update comments.
(elf_x86_plt_layout): Likewise.
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If IFUNC symbol is defined in position-dependent executable, we should
change it to the normal function and set its address to its PLT entry
which should be resolved by R_*_IRELATIVE at run-time. All external
references should be resolved to its PLT in executable.
bfd/
PR ld/23169
* elf-ifunc.c (_bfd_elf_allocate_ifunc_dyn_relocs): Don't issue
an error on IFUNC pointer defined in PDE.
* elf32-i386.c (elf_i386_finish_dynamic_symbol): Call
_bfd_x86_elf_link_fixup_ifunc_symbol.
* elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Likewise.
* elfxx-x86.c (_bfd_x86_elf_link_fixup_ifunc_symbol): New
function.
* elfxx-x86.h (_bfd_x86_elf_link_fixup_ifunc_symbol): New.
ld/
PR ld/23169
* testsuite/ld-ifunc/ifunc-9-i386.d: New file.
* testsuite/ld-ifunc/ifunc-9-x86-64.d: Likewise.
* testsuite/ld-ifunc/pr23169a.c: Likewise.
* testsuite/ld-ifunc/pr23169a.rd: Likewise.
* testsuite/ld-ifunc/pr23169b.c: Likewise.
* testsuite/ld-ifunc/pr23169b.c: Likewise.
* testsuite/ld-ifunc/pr23169c.rd: Likewise.
* testsuite/ld-ifunc/pr23169c.rd: Likewise.
* testsuite/ld-ifunc/ifunc-9-x86.d: Removed.
* testsuite/ld-ifunc/ifunc.exp: Run PR ld/23169 tests.
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This patch is aimed at silencing gcc8 -Wstringop-truncation warnings.
Unfortunately adding __attribute__ ((__nonstring)) doesn't work in a
number of the places patched here, (see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643) so if you have
recent glibc headers installed you'll need to configure binutils with
--disable-werror to compile using gcc8 or gcc9.
include/
* ansidecl.h: Import from gcc.
* coff/internal.h (struct internal_scnhdr): Add ATTRIBUTE_NONSTRING
to s_name.
(struct internal_syment): Add ATTRIBUTE_NONSTRING to _n_name.
bfd/
* elf-linux-core.h (struct elf_external_linux_prpsinfo32_ugid32),
(struct elf_external_linux_prpsinfo32_ugid16),
(struct elf_external_linux_prpsinfo64_ugid32),
(struct elf_external_linux_prpsinfo64_ugid16): Add ATTRIBUTE_NONSTRING
to pr_fname and pr_psargs fields. Remove GCC diagnostic pragmas.
Move comment to..
* elf.c (elfcore_write_prpsinfo): ..here. Indent nested preprocessor
directives.
* elf32-arm.c (elf32_arm_nabi_write_core_note): Add ATTRIBUTE_NONSTRING
to data.
* elf32-ppc.c (ppc_elf_write_core_note): Likewise.
* elf32-s390.c (elf_s390_write_core_note): Likewise.
* elf64-s390.c (elf_s390_write_core_note): Likewise.
* elfxx-aarch64.c (_bfd_aarch64_elf_write_core_note): Likewise.
* elf64-x86-64.c (elf_x86_64_write_core_note): Add GCC diagnostic
pragmas.
* peXXigen.c (_bfd_XXi_swap_scnhdr_out): Use strnlen to avoid
false positive gcc-8 warning.
gas/
* config/obj-evax.c (shorten_identifier): Use memcpy in place
of strncpy.
* config/obj-macho.c (obj_mach_o_make_or_get_sect): Ensure
segname and sectname fields are NUL terminated.
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R_X86_64_converted_reloc_bit is set in elf_x86_64_convert_load_reloc
which is called from elf_x86_64_check_relocs. Since it is used only
internally by linker, there is no need to mask it out in
elf_x86_64_info_to_howto.
* elf64-x86-64.c (elf_x86_64_info_to_howto): Don't mask out
R_X86_64_converted_reloc_bit.
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The TLSDESC entry in a lazy procedure linkage table is called indirectly
with "callq *(%rax)". This patch adds an ENDBR64 to support indirect
branch tracking in Intel CET. The TLSDESC PLT entry now looks like:
0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
0xff, 0x25, 16, 0, 0, 0 /* jmpq *GOT+TDG(%rip) */
The BND prefix isn't needed since MPX isn't used for TLSDESC.
bfd/
PR ld/23000
* elf64-x86-64.c (elf_x86_64_finish_dynamic_sections): Add
ENDBR64 to the TLSDESC PLT entry.
ld/
PR ld/23000
* testsuite/ld-x86-64/tlsdesc.pd: Updated.
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When resolving a relocation against IFUNC symbol in a SHT_NOTE section
without SHF_ALLOC, we treat it as relocation against FUNC symbol since
it needs the address of IFUNC symbol, not the address returned by IFUNC
function.
bfd/
PR ld/22929
* elf32-i386.c (elf_i386_relocate_section): Treat relocation
against IFUNC symbol in SHT_NOTE section without SHF_ALLOC as
relocation against FUNC symbol.
* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
ld/
PR ld/22929
* testsuite/ld-i386/i386.exp: Run PR ld/22929 test.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr22929.d: New file.
* testsuite/ld-i386/pr22929.s: Likewise.
* testsuite/ld-x86-64/pr22929.d: Likewise.
* testsuite/ld-x86-64/pr22929.s: Likewise.
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This patch adds --enable-separate-code to ld configure to turn on
-z separate-code by default and enables it by default for Linux/x86.
This avoids mixing code pages with data to improve cache performance
as well as security.
To reduce x86-64 executable and shared object sizes, the maximum page
size is reduced from 2MB to 4KB when -z separate-code is turned on by
default. Note: -z max-page-size= can be used to set the maximum page
size.
We compared SPEC CPU 2017 performance before and after this change on
Skylake server. There are no any significant performance changes.
Everything is mostly below +/-1%.
bfd/
* config.in: Regenerated.
* configure: Likewise.
* configure.ac: Add --enable-separate-code.
(DEFAULT_LD_Z_SEPARATE_CODE): New AC_DEFINE_UNQUOTED. Default
to 1 for Linux/x86 targets,
* elf64-x86-64.c (ELF_MAXPAGESIZE): Set to 0x1000 if
DEFAULT_LD_Z_SEPARATE_CODE is 1.
ld/
* NEWS: Mention --enable-separate-code.
* configure.ac: Add --enable-separate-code.
(DEFAULT_LD_Z_SEPARATE_CODE): New AC_DEFINE_UNQUOTED.
* configure.tgt: Default ac_default_ld_z_separate_code to 1 for
Linux/x86 targets.
* config.in: Regenerated.
* configure: Likewise.
* emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Set
link_info.separate_code DEFAULT_LD_Z_SEPARATE_CODE.
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result. Stop strip from completeing if one of these functions fails.
bfd PR 22875
* elf-bfd.h (struct elf_backend_data): Change the return type of
the elf_info_to_howto and elf_info_to_howto_rel function pointers
to bfd_boolean.
* elfcode.h (elf_slurp_reloc_table_from_section): Check the return value from the info_to_howto function and fail if that function failed.
* elf32-h8300.c (elf32_h8_relocate_section): Check return value from the info_to_howto function.
(elf32_h8_relax_section): Likewise.
* elf32-lm32.c (lm32_elf_relocate_section): Likewise.
* elf32-m68hc1x.c (elf32_m68hc11_relocate_section): Likewise.
* elf32-score.c (s3_bfd_score_elf_relocate_section): Likewise.
* elf32-score7.c (s7_bfd_score_elf_relocate_section): Likewise.
* elf32-tic6x.c (elf32_tic6x_relocate_section): Likewise.
* elf64-ia64-vms.c (elf64_ia64_relocate_section): Likewise.
* elf64-sparc.c (elf64_sparc_slurp_one_reloc_table): Likewise.
* elf64-x86-64.c (elf_x86_64_tls_transition): Likewise.
* elfnn-ia64.c (elfNN_ia64_relocate_section): Likewise.
* elfnn-riscv.c (riscv_elf_check_relocs): Likewise.
(riscv_elf_relocate_section): Likewise.
* elf-hppa.h (elf_hppa_info_to_howto): Change return type to
bfd_boolean. Issue an error message, set an error value and
return FALSE if the reloc is not recognized.
(elf_hppa_info_to_howto_rel): Likewise.
* elf-m10200.c (mn10200_info_to_howto): Likewise.
* elf-m10300.c (mn10300_info_to_howto): Likewise.
* elf.c (_bfd_elf_no_info_to_howto): Likewise.
* elf32-arc.c (arc_info_to_howto_rel): Likewise.
* elf32-arm.c (elf32_arm_info_to_howto): Likewise.
* elf32-avr.c (avr_info_to_howto_rela): Likewise.
* elf32-bfin.c (bfin_info_to_howto): Likewise.
* elf32-cr16.c (elf_cr16_info_to_howto): Likewise.
* elf32-cr16c.c (elf_cr16c_info_to_howto): Likewise.
* elf32-cris.c (elf_cr16c_info_to_howto_rel, cris_info_to_howto_rela): Likewise.
* elf32-crx.c (elf_crx_info_to_howto): Likewise.
* elf32-d10v.c (d10v_info_to_howto_rel): Likewise.
* elf32-d30v.c (d30v_info_to_howto_rel, d30v_info_to_howto_rela): Likewise.
* elf32-dlx.c (dlx_rtype_to_howto, elf32_dlx_info_to_howto, elf32_dlx_info_to_howto_rel): Likewise.
* elf32-epiphany.c (epiphany_info_to_howto_rela): Likewise.
* elf32-fr30.c (fr30_info_to_howto_rela): Likewise.
* elf32-frv.c (frv_info_to_howto_rela, frvfdpic_info_to_howto_rel): Likewise.
* elf32-ft32.c (ft32_info_to_howto_rela): Likewise.
* elf32-gen.c (elf_generic_info_to_howto, elf_generic_info_to_howto_rel): Likewise.
* elf32-h8300.c (elf32_h8_info_to_howto, elf32_h8_info_to_howto_rel): Likewise.
* elf32-i370.c (i370_elf_info_to_howto): Likewise.
* elf32-i386.c (elf_i386_reloc_type_lookup, elf_i386_rtype_to_howto, elf_i386_info_to_howto_rel): Likewise.
* elf32-i860.c (lookup_howto, elf32_i860_info_to_howto_rela): Likewise.
* elf32-i960.c (elf32_i960_info_to_howto_rel): Likewise.
* elf32-ip2k.c (ip2k_info_to_howto_rela): Likewise.
* elf32-iq2000.c (iq2000_info_to_howto_rela): Likewise.
* elf32-lm32.c (lm32_info_to_howto_rela): Likewise.
* elf32-m32c.c (m32c_info_to_howto_rela): Likewise.
* elf32-m32r.c (m32r_info_to_howto_rel, m32r_info_to_howto): Likewise.
* elf32-m68hc11.c (m68hc11_info_to_howto_rel): Likewise.
* elf32-m68hc12.c (m68hc11_info_to_howto_rel): Likewise.
* elf32-m68k.c (rtype_to_howto): Likewise.
* elf32-mcore.c (mcore_elf_info_to_howto): Likewise.
* elf32-mep.c (mep_info_to_howto_rela): Likewise.
* elf32-metag.c (metag_info_to_howto_rela): Likewise.
* elf32-microblaze.c (microblaze_elf_info_to_howto): Likewise.
* elf32-mips.c (mips_info_to_howto_rel, mips_info_to_howto_rela): Likewise.
* elf32-moxie.c (moxie_info_to_howto_rela): Likewise.
* elf32-msp430.c (msp430_info_to_howto_rela): Likewise.
* elf32-mt.c (mt_info_to_howto_rela): Likewise.
* elf32-nds32.c (nds32_info_to_howto_rel, nds32_info_to_howto): Likewise.
* elf32-nios2.c (nios2_elf32_info_to_howto): Likewise.
* elf32-or1k.c (or1k_info_to_howto_rela): Likewise.
* elf32-pj.c (pj_elf_info_to_howto): Likewise.
* elf32-ppc.c (ppc_elf_info_to_howto): Likewise.
* elf32-pru.c (pru_elf32_info_to_howto): Likewise.
* elf32-rl78.c (rl78_info_to_howto_rela): Likewise.
* elf32-rx.c (rx_info_to_howto_rela): Likewise.
* elf32-s390.c (elf_s390_info_to_howto): Likewise.
* elf32-score.c (s3_bfd_score_info_to_howto, _bfd_score_info_to_howto): Likewise.
* elf32-score7.c (s7_bfd_score_info_to_howto): Likewise.
* elf32-sh.c (sh_elf_info_to_howto): Likewise.
* elf32-spu.c (spu_elf_info_to_howto): Likewise.
* elf32-tic6x.c (elf32_tic6x_info_to_howto, elf32_tic6x_info_to_howto_rel): Likewise.
* elf32-tilepro.c (tilepro_info_to_howto_rela): Likewise.
* elf32-v850.c (v850_elf_info_to_howto_rel, v850_elf_info_to_howto_rela, v800_elf_info_to_howto): Likewise.
* elf32-vax.c (rtype_to_howto): Likewise.
* elf32-visium.c (visium_info_to_howto_rela): Likewise.
* elf32-wasm32.c (elf32_wasm32_rtype_to_howto, elf32_wasm32_info_to_howto_rela): Likewise.
* elf32-xc16x.c (elf32_xc16x_info_to_howto): Likewise.
* elf32-xgate.c (xgate_info_to_howto_rel): Likewise.
* elf32-xstormy16.c (xstormy16_info_to_howto_rela): Likewise.
* elf32-xtensa.c (elf_xtensa_info_to_howto_rela): Likewise.
* elf64-alpha.c (elf64_alpha_info_to_howto): Likewise.
* elf64-gen.c (elf_generic_info_to_howto, elf_generic_info_to_howto_rel): Likewise.
* elf64-ia64-vms.c (elf64_ia64_info_to_howto): Likewise.
* elf64-mips.c (mips_elf64_info_to_howto_rela): Likewise.
* elf64-mmix.c (mmix_info_to_howto_rela): Likewise.
* elf64-ppc.c (ppc64_elf_info_to_howto): Likewise.
* elf64-s390.c (elf_s390_reloc_type_lookup): Likewise.
* elf64-sh64.c (elf_s390_info_to_howto, sh_elf64_info_to_howto): Likewise.
* elf64-x86-64.c (elf_x86_64_info_to_howto): Likewise.
* elfn32-mips.c (mips_info_to_howto_rel, mips_info_to_howto_rela): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_info_to_howto): Likewise.
* elfnn-ia64.c (elfNN_ia64_info_to_howto): Likewise.
* elfnn-riscv.c (riscv_info_to_howto_rela): Likewise.
* elfxx-ia64.c (ia64_elf_reloc_type_lookup): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_info_to_howto): Likewise.
* elfxx-tilegx.c (tilegx_info_to_howto_rela): Likewise.
* elf32-score.h (s7_bfd_score_info_to_howto): Update prototype.
* elfxx-sparc.h (_bfd_sparc_elf_info_to_howto): Update prototype.
* elfxx-tilegx.h (tilegx_info_to_howto_rela): Update prototype.
* elfxx-target.h (elf_info_to_howto, elf_info_to_howto_rel): Default to NULL.
binutils PR 22875
* objcopy.c (copy_object): Check the error status after marking symbols used in relocations.
* testsuite/binutils-all/strip-13.s: New test source file.
* testsuite/binutils-all/strip-13.s: New test driver file.
* testsuite/binutils-all/objcopy.exp: Run the new test.
|
|
It must get boring translating all the variants we have of
unrecognized/unsupported/invalid/unexpected reloc number. This patch
cuts down on the number of variations.
* aoutx.h, * coff-alpha.c, * coff-i860.c, * coff-m68k.c,
* coff-mcore.c, * coff-ppc.c, * coff-rs6000.c, * coff-sh.c,
* coff-tic4x.c, * coff-tic54x.c, * coff-tic80.c, * coff-w65.c,
* elf-bfd.h, * elf-m10300.c, * elf.c, * elf32-avr.c, * elf32-bfin.c,
* elf32-cr16.c, * elf32-cr16c.c, * elf32-cris.c, * elf32-crx.c,
* elf32-d10v.c, * elf32-d30v.c, * elf32-dlx.c, * elf32-epiphany.c,
* elf32-fr30.c, * elf32-frv.c, * elf32-i370.c, * elf32-i386.c,
* elf32-i960.c, * elf32-ip2k.c, * elf32-iq2000.c, * elf32-lm32.c,
* elf32-m32c.c, * elf32-m32r.c, * elf32-m68hc11.c, * elf32-m68hc12.c,
* elf32-m68k.c, * elf32-mcore.c, * elf32-mep.c, * elf32-metag.c,
* elf32-microblaze.c, * elf32-mips.c, * elf32-moxie.c,
* elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c, * elf32-or1k.c,
* elf32-pj.c, * elf32-ppc.c, * elf32-rl78.c, * elf32-rx.c,
* elf32-s390.c, * elf32-sh.c, * elf32-spu.c, * elf32-tic6x.c,
* elf32-v850.c, * elf32-vax.c, * elf32-visium.c, * elf32-wasm32.c,
* elf32-xgate.c, * elf32-xtensa.c, * elf64-alpha.c,
* elf64-ia64-vms.c, * elf64-mips.c, * elf64-mmix.c,
* elf64-ppc.c, * elf64-s390.c, * elf64-sparc.c, * elf64-x86-64.c,
* elfn32-mips.c, * elfnn-aarch64.c, * elfnn-ia64.c,
* elfnn-riscv.c, * elfxx-mips.c, * elfxx-riscv.c, * elfxx-riscv.h,
* elfxx-sparc.c, * elfxx-sparc.h, * reloc.c: Standardize
unrecognized/unsupported reloc message.
|
|
* bfd-in.h: Include inttypes.h or if not available define
PRId64, PRIu64 and PRIx64.
* bfd.c (_bfd_doprnt, _bfd_doprnt_scan): Remove support for L
modifier to print bfd_vma.
* coff-arm.c, * coff-mcore.c, * coff-ppc.c, * coff-rs6000.c,
* coff-sh.c, * coff-tic80.c, * coffcode.h, * coffgen.c, * cofflink.c,
* compress.c, * dwarf2.c, * elf-m10300.c, * elf.c, * elf32-arc.c,
* elf32-arm.c, * elf32-bfin.c, * elf32-cris.c, * elf32-hppa.c,
* elf32-i386.c, * elf32-ip2k.c, * elf32-lm32.c, * elf32-m32r.c,
* elf32-m68k.c, * elf32-metag.c, * elf32-nds32.c, * elf32-nios2.c,
* elf32-ppc.c, * elf32-rx.c, * elf32-s390.c, * elf32-score.c,
* elf32-score7.c, * elf32-sh.c, * elf32-sh64.c, * elf32-spu.c,
* elf32-tic6x.c, * elf32-tilepro.c, * elf32-v850.c, * elf32-vax.c,
* elf32-xtensa.c, * elf64-alpha.c, * elf64-hppa.c, * elf64-ia64-vms.c,
* elf64-mmix.c, * elf64-s390.c, * elf64-sh64.c, * elf64-x86-64.c,
* elfcode.h, * elfcore.h, * elflink.c, * elfnn-aarch64.c,
* elfnn-ia64.c, * elfnn-riscv.c, * elfxx-mips.c, * elfxx-sparc.c,
* elfxx-tilegx.c, * ieee.c, * ihex.c, * mach-o.c, * merge.c, * mmo.c,
* peXXigen.c, * xcofflink.c: Replace use of Lx modifier with PRIx64,
and cast input to uint64_t, and similarly for Ld and Lu.
* bfd-in2.h: Regenerate.
|
|
First step towards compiler verification of _bfd_error_handler
arguments, and better verification of translated messages.
bfd/
* bfd.c (_bfd_doprnt, _bfd_doprnt_scan): Handle %pA and %pB in place
of %A and %B.
* aout-adobe.c: Update all messages using %A and %B.
* aout-cris.c: Likewise.
* aoutx.h: Likewise.
* archive.c: Likewise.
* binary.c: Likewise.
* cache.c: Likewise.
* coff-alpha.c: Likewise.
* coff-arm.c: Likewise.
* coff-i860.c: Likewise.
* coff-mcore.c: Likewise.
* coff-ppc.c: Likewise.
* coff-rs6000.c: Likewise.
* coff-sh.c: Likewise.
* coff-tic4x.c: Likewise.
* coff-tic54x.c: Likewise.
* coff-tic80.c: Likewise.
* coff64-rs6000.c: Likewise.
* coffcode.h: Likewise.
* coffgen.c: Likewise.
* cofflink.c: Likewise.
* coffswap.h: Likewise.
* compress.c: Likewise.
* cpu-arm.c: Likewise.
* ecoff.c: Likewise.
* elf-attrs.c: Likewise.
* elf-eh-frame.c: Likewise.
* elf-ifunc.c: Likewise.
* elf-m10300.c: Likewise.
* elf-properties.c: Likewise.
* elf-s390-common.c: Likewise.
* elf.c: Likewise.
* elf32-arc.c: Likewise.
* elf32-arm.c: Likewise.
* elf32-avr.c: Likewise.
* elf32-bfin.c: Likewise.
* elf32-cr16.c: Likewise.
* elf32-cr16c.c: Likewise.
* elf32-cris.c: Likewise.
* elf32-crx.c: Likewise.
* elf32-d10v.c: Likewise.
* elf32-d30v.c: Likewise.
* elf32-epiphany.c: Likewise.
* elf32-fr30.c: Likewise.
* elf32-frv.c: Likewise.
* elf32-gen.c: Likewise.
* elf32-hppa.c: Likewise.
* elf32-i370.c: Likewise.
* elf32-i386.c: Likewise.
* elf32-i960.c: Likewise.
* elf32-ip2k.c: Likewise.
* elf32-iq2000.c: Likewise.
* elf32-lm32.c: Likewise.
* elf32-m32c.c: Likewise.
* elf32-m32r.c: Likewise.
* elf32-m68hc11.c: Likewise.
* elf32-m68hc12.c: Likewise.
* elf32-m68hc1x.c: Likewise.
* elf32-m68k.c: Likewise.
* elf32-mcore.c: Likewise.
* elf32-mep.c: Likewise.
* elf32-metag.c: Likewise.
* elf32-microblaze.c: Likewise.
* elf32-moxie.c: Likewise.
* elf32-msp430.c: Likewise.
* elf32-mt.c: Likewise.
* elf32-nds32.c: Likewise.
* elf32-nios2.c: Likewise.
* elf32-or1k.c: Likewise.
* elf32-pj.c: Likewise.
* elf32-ppc.c: Likewise.
* elf32-rl78.c: Likewise.
* elf32-rx.c: Likewise.
* elf32-s390.c: Likewise.
* elf32-score.c: Likewise.
* elf32-score7.c: Likewise.
* elf32-sh-symbian.c: Likewise.
* elf32-sh.c: Likewise.
* elf32-sh64.c: Likewise.
* elf32-sparc.c: Likewise.
* elf32-spu.c: Likewise.
* elf32-tic6x.c: Likewise.
* elf32-tilepro.c: Likewise.
* elf32-v850.c: Likewise.
* elf32-vax.c: Likewise.
* elf32-visium.c: Likewise.
* elf32-wasm32.c: Likewise.
* elf32-xgate.c: Likewise.
* elf32-xtensa.c: Likewise.
* elf64-alpha.c: Likewise.
* elf64-gen.c: Likewise.
* elf64-hppa.c: Likewise.
* elf64-ia64-vms.c: Likewise.
* elf64-mmix.c: Likewise.
* elf64-ppc.c: Likewise.
* elf64-s390.c: Likewise.
* elf64-sh64.c: Likewise.
* elf64-sparc.c: Likewise.
* elf64-x86-64.c: Likewise.
* elfcode.h: Likewise.
* elfcore.h: Likewise.
* elflink.c: Likewise.
* elfnn-aarch64.c: Likewise.
* elfnn-ia64.c: Likewise.
* elfnn-riscv.c: Likewise.
* elfxx-mips.c: Likewise.
* elfxx-sparc.c: Likewise.
* elfxx-tilegx.c: Likewise.
* elfxx-x86.c: Likewise.
* hpux-core.c: Likewise.
* ieee.c: Likewise.
* ihex.c: Likewise.
* libbfd.c: Likewise.
* linker.c: Likewise.
* mach-o.c: Likewise.
* merge.c: Likewise.
* mmo.c: Likewise.
* oasys.c: Likewise.
* pdp11.c: Likewise.
* pe-mips.c: Likewise.
* peXXigen.c: Likewise.
* peicode.h: Likewise.
* reloc.c: Likewise.
* rs6000-core.c: Likewise.
* srec.c: Likewise.
* stabs.c: Likewise.
* vms-alpha.c: Likewise.
* xcofflink.c: Likewise.
ld/
* ldmisc.c (vfinfo): Handle %pA and %pB in place of %A and %B.
* ldcref.c: Update all messages using %A and %B.
* ldexp.c: Likewise.
* ldlang.c: Likewise.
* ldmain.c: Likewise.
* ldmisc.c: Likewise.
* pe-dll.c: Likewise.
* plugin.c: Likewise.
* emultempl/beos.em: Likewise.
* emultempl/cr16elf.em: Likewise.
* emultempl/elf32.em: Likewise.
* emultempl/m68kcoff.em: Likewise.
* emultempl/m68kelf.em: Likewise.
* emultempl/mmo.em: Likewise.
* emultempl/nds32elf.em: Likewise.
* emultempl/pe.em: Likewise.
* emultempl/pep.em: Likewise.
* emultempl/spuelf.em: Likewise.
* emultempl/sunos.em: Likewise.
* emultempl/xtensaelf.em: Likewise.
|
|
Since PLT in PDE and PC-relative PLT in PIE can be used as function
address, there is no need for dynamic PC-relative relocation against
a dynamic function definition in PIE. Linker should resolve PC-relative
reference to its PLT address.
NB: i386 has non-PIC PLT and PIC PLT. Only non-PIC PLT in PDE can
be used as function address. PIC PLT in PIE can't be used as
function address.
bfd/
PR ld/22842
* elf32-i386.c (elf_i386_check_relocs): Pass FALSE for non
PC-relative PLT to NEED_DYNAMIC_RELOCATION_P.
* elf64-x86-64.c (elf_x86_64_check_relocs): Create PLT for
R_X86_64_PC32 reloc against dynamic function in data section.
Pass TRUE for PC-relative PLT to NEED_DYNAMIC_RELOCATION_P.
(elf_x86_64_relocate_section): Use PLT for R_X86_64_PC32 reloc
against dynamic function in data section.
* elfxx-x86.c (elf_x86_allocate_dynrelocs): Use PLT in PIE as
function address only if pcrel_plt is true.
(_bfd_x86_elf_link_hash_table_create): Set pcrel_plt.
* elfxx-x86.h (NEED_DYNAMIC_RELOCATION_P): Add PCREL_PLT for
PC-relative PLT. If PLT is PC-relative, don't generate dynamic
PC-relative relocation against a function definition in data
secton in PIE. Remove the obsolete comments.
(elf_x86_link_hash_table): Add pcrel_plt.
ld/
PR ld/22842
* testsuite/ld-i386/i386.exp: Run PR ld/22842 tests.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr22842a.c: New file.
* testsuite/ld-i386/pr22842b.S: Likewise.
* testsuite/ld-x86-64/pr22842a.c: Likewise.
* testsuite/ld-x86-64/pr22842a.rd: Likewise.
* testsuite/ld-x86-64/pr22842b.S: Likewise.
* testsuite/ld-x86-64/pr22842b.rd: Likewise.
|
|
Since there is no need to prepare for PLT branch on x86-64, generate
R_X86_64_PLT32, instead of R_X86_64_PC32, if possible, which can be
used as a marker for 32-bit PC-relative branches.
To compile Linux kernel, this patch:
From: "H.J. Lu" <hjl.tools@gmail.com>
Subject: [PATCH] x86: Treat R_X86_64_PLT32 as R_X86_64_PC32
On i386, there are 2 types of PLTs, PIC and non-PIC. PIE and shared
objects must use PIC PLT. To use PIC PLT, you need to load
_GLOBAL_OFFSET_TABLE_ into EBX first. There is no need for that on
x86-64 since x86-64 uses PC-relative PLT.
On x86-64, for 32-bit PC-relative branches, we can generate PLT32
relocation, instead of PC32 relocation, which can also be used as
a marker for 32-bit PC-relative branches. Linker can always reduce
PLT32 relocation to PC32 if function is defined locally. Local
functions should use PC32 relocation. As far as Linux kernel is
concerned, R_X86_64_PLT32 can be treated the same as R_X86_64_PC32
since Linux kernel doesn't use PLT.
is needed. It is available on hjl/plt32/master branch at
https://github.com/hjl-tools/linux
bfd/
PR gas/22791
* elf64-x86-64.c (is_32bit_relative_branch): Removed.
(elf_x86_64_relocate_section): Check PIC relocations in PIE.
Remove is_32bit_relative_branch usage. Disallow PC32 reloc
against protected function in shared object.
gas/
PR gas/22791
* config/tc-i386.c (need_plt32_p): New function.
(output_jump): Generate BFD_RELOC_X86_64_PLT32 if possible.
(md_estimate_size_before_relax): Likewise.
* testsuite/gas/i386/reloc64.d: Updated.
* testsuite/gas/i386/x86-64-jump.d: Likewise.
* testsuite/gas/i386/x86-64-mpx-branch-1.d: Likewise.
* testsuite/gas/i386/x86-64-mpx-branch-2.d: Likewise.
* testsuite/gas/i386/x86-64-relax-2.d: Likewise.
* testsuite/gas/i386/x86-64-relax-3.d: Likewise.
* testsuite/gas/i386/ilp32/reloc64.d: Likewise.
* testsuite/gas/i386/ilp32/x86-64-branch.d: Likewise.
ld/
PR gas/22791
* testsuite/ld-x86-64/mpx1c.rd: Updated.
* testsuite/ld-x86-64/pr22791-1.err: New file.
* testsuite/ld-x86-64/pr22791-1a.c: Likewise.
* testsuite/ld-x86-64/pr22791-1b.s: Likewise.
* testsuite/ld-x86-64/pr22791-2.rd: Likewise.
* testsuite/ld-x86-64/pr22791-2a.s: Likewise.
* testsuite/ld-x86-64/pr22791-2b.c: Likewise.
* testsuite/ld-x86-64/pr22791-2c.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run PR ld/22791 tests.
|
|
Add is_solaris to elf_x86_target_os since Solaris is quite different.
* elf32-i386.c (elf_i386_get_synthetic_symtab): Also handle
is_solaris.
(i386_elf32_sol2_vec): Don't declare.
(elf_i386_link_setup_gnu_properties): Also handle is_solaris.
Don't set need_global_offset_table.
(elf_i386_solaris_arch_bed): New.
(elf_backend_arch_data): Set to elf_i386_solaris_arch_bed for
Solaris.
* elf64-x86-64.c (elf_x86_64_get_synthetic_symtab): Check
target_os != is_nacl instead of target_os == is_normal.
(x86_64_elf64_sol2_vec): Don't declare.
(elf_x86_64_link_setup_gnu_properties): Check target_os !=
is_nacl instead of target_os == is_normal. Don't set
need_global_offset_table.
(elf_x86_64_solaris_arch_bed): New.
(elf_backend_arch_data): Set to elf_x86_64_solaris_arch_bed for
Solaris.
* elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Keep
_GLOBAL_OFFSET_TABLE_ for Solaris.
(_bfd_x86_elf_link_setup_gnu_properties): Don't copy
need_global_offset_table.
* elfxx-x86.h (elf_x86_target_os): Add is_solaris.
(elf_x86_link_hash_table): Remove need_global_offset_table.
(elf_x86_init_table): Likewise.
|
|
* elf32-i386.c (elf32_i386_copy_solaris_special_section_fields):
Remove prototype.
(i386_elf32_sol2_vec): Declared.
(elf_i386_link_setup_gnu_properties): Set
need_global_offset_table with info->output_bfd->xvec.
* elf64-x86-64.c (elf64_x86_64_copy_solaris_special_section_fields):
Remove prototype.
(x86_64_elf64_sol2_vec): Declared.
(elf_x86_64_link_setup_gnu_properties): Set
need_global_offset_table with info->output_bfd->xvec.
|
|
Solaris requires to keep _GLOBAL_OFFSET_TABLE_ even if it isn't used.
This patch detects Solaris target and keeps _GLOBAL_OFFSET_TABLE_ for
Solaris.
* elf32-i386.c (elf32_i386_copy_solaris_special_section_fields):
New prototype.
(elf_i386_link_setup_gnu_properties): Set need_global_offset_table
for Solaris.
* elf64-x86-64.c (elf64_x86_64_copy_solaris_special_section_fields):
New prototype.
(elf_x86_64_link_setup_gnu_properties): Set
need_global_offset_table for Solaris.
* elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Keep the
unused _GLOBAL_OFFSET_TABLE_ for Solaris.
(_bfd_x86_elf_link_setup_gnu_properties): Copy
need_global_offset_table.
* elfxx-x86.h (elf_x86_link_hash_table): Add
need_global_offset_table.
(elf_x86_init_table): Likewise.
|
|
Since _GLOBAL_OFFSET_TABLE_ may be referenced implicitly on x86,
checking ref_regular_nonweak leaves the unused _GLOBAL_OFFSET_TABLE_
in output. This patch checks explicit GOT references instead.
ld-i386/discarded1.s and ld-x86-64/discarded1.s are updated to avoid
linker optimization which removes GOT references.
bfd/
PR ld/22782
* elf32-i386.c (elf_i386_check_relocs): Set got_referenced if
_GLOBAL_OFFSET_TABLE_ is referenced or GOT is needed to resolve
undefined weak symbol to 0.
* elf64-x86-64.c (elf_x86_64_check_relocs): Set got_referenced
if _GLOBAL_OFFSET_TABLE_ is referenced.
* elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Check
got_referenced instead of ref_regular_nonweak. Remove the
unused _GLOBAL_OFFSET_TABLE_ from symbol table.
* elfxx-x86.h (elf_x86_link_hash_table): Add got_referenced.
ld/
PR ld/22782
* testsuite/ld-i386/discarded1.s: Replace mov with div.
* testsuite/ld-x86-64/discarded1.s: Likewise.
* testsuite/ld-i386/i386.exp: Run pr22782.
* testsuite/ld-i386/load1-nacl.d: Updated for removing
_GLOBAL_OFFSET_TABLE_ from output.
* testsuite/ld-i386/load1.d: Likewise.
* testsuite/ld-x86-64/load1a-nacl.d: Likewise.
* testsuite/ld-x86-64/load1a.d: Likewise.
* testsuite/ld-x86-64/load1b-nacl.d: Likewise.
* testsuite/ld-x86-64/load1b.d: Likewise.
* testsuite/ld-i386/pr22782.d: New file.
* testsuite/ld-i386/pr22782.s: Likewise.
* testsuite/ld-x86-64/pr22782.s: Likewise.
* testsuite/ld-x86-64/pr22782a.d: Likewise.
* testsuite/ld-x86-64/pr22782b.d: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run pr22782a and pr22782b.
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Binutils is supposed to use tabs. In my git config I have
whitespace = indent-with-non-tab,space-before-tab,trailing-space
and I got annoyed enough seeing red in "git diff" output to fix
the problems.
* doc/header.sed: Trim trailing space when splitting lines.
* aix386-core.c, * aout-adobe.c, * aout-arm.c, * aout-cris.c,
* aout-ns32k.c, * aout-target.h, * aout-tic30.c, * aoutf1.h, * aoutx.h,
* arc-got.h, * arc-plt.def, * arc-plt.h, * archive.c, * archive64.c,
* archures.c, * armnetbsd.c, * bfd-in.h, * bfd.c, * bfdio.c, * binary.c,
* bout.c, * cache.c, * cisco-core.c, * coff-alpha.c, * coff-apollo.c,
* coff-arm.c, * coff-h8300.c, * coff-i386.c, * coff-i860.c,
* coff-i960.c, * coff-m68k.c, * coff-m88k.c, * coff-mcore.c,
* coff-mips.c, * coff-ppc.c, * coff-rs6000.c, * coff-sh.c,
* coff-stgo32.c, * coff-tic4x.c, * coff-tic54x.c, * coff-tic80.c,
* coff-we32k.c, * coff-x86_64.c, * coff-z80.c, * coff-z8k.c,
* coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c,
* coffswap.h, * compress.c, * corefile.c, * cpu-alpha.c, * cpu-arm.c,
* cpu-avr.c, * cpu-bfin.c, * cpu-cr16.c, * cpu-cr16c.c, * cpu-crx.c,
* cpu-d10v.c, * cpu-frv.c, * cpu-ft32.c, * cpu-i370.c, * cpu-i960.c,
* cpu-ia64-opc.c, * cpu-ip2k.c, * cpu-lm32.c, * cpu-m32r.c,
* cpu-mcore.c, * cpu-microblaze.c, * cpu-mips.c, * cpu-moxie.c,
* cpu-mt.c, * cpu-nios2.c, * cpu-ns32k.c, * cpu-or1k.c, * cpu-powerpc.c,
* cpu-pru.c, * cpu-sh.c, * cpu-spu.c, * cpu-v850.c, * cpu-v850_rh850.c,
* cpu-xgate.c, * cpu-z80.c, * dwarf1.c, * dwarf2.c, * ecoff.c,
* ecofflink.c, * ecoffswap.h, * elf-bfd.h, * elf-eh-frame.c,
* elf-hppa.h, * elf-m10200.c, * elf-m10300.c, * elf-s390-common.c,
* elf-strtab.c, * elf-vxworks.c, * elf.c, * elf32-am33lin.c,
* elf32-arc.c, * elf32-arm.c, * elf32-avr.c, * elf32-avr.h,
* elf32-bfin.c, * elf32-cr16.c, * elf32-cr16c.c, * elf32-cris.c,
* elf32-crx.c, * elf32-d10v.c, * elf32-d30v.c, * elf32-dlx.c,
* elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c, * elf32-ft32.c,
* elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c, * elf32-i860.c,
* elf32-i960.c, * elf32-ip2k.c, * elf32-lm32.c, * elf32-m32c.c,
* elf32-m32r.c, * elf32-m68hc11.c, * elf32-m68hc12.c, * elf32-m68hc1x.c,
* elf32-m68hc1x.h, * elf32-m68k.c, * elf32-m88k.c, * elf32-mcore.c,
* elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c, * elf32-mips.c,
* elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c,
* elf32-nds32.h, * elf32-nios2.c, * elf32-or1k.c, * elf32-pj.c,
* elf32-ppc.c, * elf32-ppc.h, * elf32-pru.c, * elf32-rl78.c,
* elf32-rx.c, * elf32-s390.c, * elf32-score.c, * elf32-score.h,
* elf32-score7.c, * elf32-sh-symbian.c, * elf32-sh.c, * elf32-sh64.c,
* elf32-sparc.c, * elf32-spu.c, * elf32-tic6x.c, * elf32-tilegx.c,
* elf32-tilegx.h, * elf32-tilepro.c, * elf32-tilepro.h, * elf32-v850.c,
* elf32-vax.c, * elf32-wasm32.c, * elf32-xc16x.c, * elf32-xgate.c,
* elf32-xgate.h, * elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c,
* elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mips.c, * elf64-mmix.c,
* elf64-ppc.c, * elf64-s390.c, * elf64-sh64.c, * elf64-sparc.c,
* elf64-tilegx.c, * elf64-tilegx.h, * elf64-x86-64.c, * elfcore.h,
* elflink.c, * elfn32-mips.c, * elfnn-aarch64.c, * elfnn-ia64.c,
* elfnn-riscv.c, * elfxx-aarch64.c, * elfxx-aarch64.h, * elfxx-ia64.c,
* elfxx-ia64.h, * elfxx-mips.c, * elfxx-riscv.c, * elfxx-sparc.c,
* elfxx-tilegx.c, * elfxx-x86.c, * elfxx-x86.h, * freebsd.h, * hash.c,
* host-aout.c, * hp300hpux.c, * hppabsd-core.c, * hpux-core.c,
* i386aout.c, * i386linux.c, * i386lynx.c, * i386mach3.c, * i386msdos.c,
* i386netbsd.c, * ieee.c, * ihex.c, * irix-core.c, * libaout.h,
* libbfd-in.h, * libbfd.c, * libcoff-in.h, * libnlm.h, * libpei.h,
* libxcoff.h, * linker.c, * lynx-core.c, * m68k4knetbsd.c,
* m68klinux.c, * m68knetbsd.c, * m88kmach3.c, * mach-o-aarch64.c,
* mach-o-arm.c, * mach-o-i386.c, * mach-o-target.c, * mach-o-x86-64.c,
* mach-o.c, * mach-o.h, * merge.c, * mipsbsd.c, * mmo.c, * netbsd.h,
* netbsd-core.c, * newsos3.c, * nlm-target.h, * nlm32-ppc.c,
* nlm32-sparc.c, * nlmcode.h, * ns32k.h, * ns32knetbsd.c, * oasys.c,
* opncls.c, * pc532-mach.c, * pdp11.c, * pe-arm.c, * pe-i386.c,
* pe-mcore.c, * pe-mips.c, * pe-x86_64.c, * peXXigen.c, * pef.c,
* pef.h, * pei-arm.c, * pei-i386.c, * pei-mcore.c, * pei-x86_64.c,
* peicode.h, * plugin.c, * ppcboot.c, * ptrace-core.c, * reloc.c,
* riscix.c, * rs6000-core.c, * section.c, * som.c, * som.h,
* sparclinux.c, * sparcnetbsd.c, * srec.c, * stabs.c, * sunos.c,
* syms.c, * targets.c, * tekhex.c, * trad-core.c, * vax1knetbsd.c,
* vaxnetbsd.c, * verilog.c, * versados.c, * vms-alpha.c, * vms-lib.c,
* vms-misc.c, * wasm-module.c, * wasm-module.h, * xcofflink.c,
* xsym.c, * xsym.h: Whitespace fixes.
* bfd-in2.h, * libbfd.h, * libcoff.h: Regenerate.
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Since elf_link_add_object_symbols sets non_ir_ref_regular now, there is
no need to set non_ir_ref_regular in check_relocs.
Tested on i686 and x86-64.
* elf-m10300.c (mn10300_elf_check_relocs): Don't set
non_ir_ref_regular.
* elf32-arm.c (elf32_arm_check_relocs): Likewise.
* elf32-bfin.c (bfin_check_relocs): Likewise.
* elf32-cr16.c (cr16_elf_check_relocs): Likewise.
* elf32-cris.c (cris_elf_check_relocs): Likewise.
* elf32-d10v.c (elf32_d10v_check_relocs): Likewise.
* elf32-dlx.c (elf32_dlx_check_relocs): Likewise.
* elf32-fr30.c (fr30_elf_check_relocs): Likewise.
* elf32-frv.c (elf32_frv_check_relocs): Likewise.
* elf32-hppa.c (elf32_hppa_check_relocs): Likewise.
* elf32-i370.c (i370_elf_check_relocs): Likewise.
* elf32-i386.c (elf_i386_check_relocs): Likewise.
* elf32-iq2000.c (iq2000_elf_check_relocs): Likewise.
* elf32-lm32.c (lm32_elf_check_relocs): Likewise.
* elf32-m32c.c (m32c_elf_check_relocs): Likewise.
* elf32-m32r.c (m32r_elf_check_relocs): Likewise.
* elf32-m68hc1x.c (elf32_m68hc11_check_relocs): Likewise.
* elf32-m68k.c (elf_m68k_check_relocs): Likewise.
* elf32-mcore.c (mcore_elf_check_relocs): Likewise.
* elf32-metag.c (elf_metag_check_relocs): Likewise.
* elf32-microblaze.c (microblaze_elf_check_relocs): Likewise.
* elf32-moxie.c (moxie_elf_check_relocs): Likewise.
* elf32-msp430.c (elf32_msp430_check_relocs): Likewise.
* elf32-mt.c (mt_elf_check_relocs): Likewise.
* elf32-nios2.c (nios2_elf32_check_relocs): Likewise.
* elf32-or1k.c (or1k_elf_check_relocs): Likewise.
* elf32-ppc.c (ppc_elf_check_relocs): Likewise.
* elf32-rl78.c (rl78_elf_check_relocs): Likewise.
* elf32-s390.c (elf_s390_check_relocs): Likewise.
* elf32-score.c (s3_bfd_score_elf_check_relocs): Likewise.
* elf32-score7.c (s7_bfd_score_elf_check_relocs): Likewise.
* elf32-sh.c (sh_elf_check_relocs): Likewise.
* elf32-tic6x.c (elf32_tic6x_check_relocs): Likewise.
* elf32-tilepro.c (tilepro_elf_check_relocs): Likewise.
* elf32-v850.c (v850_elf_check_relocs): Likewise.
* elf32-vax.c (elf_vax_check_relocs): Likewise.
* elf32-xstormy16.c (xstormy16_elf_check_relocs): Likewise.
* elf32-xtensa.c (elf_xtensa_check_relocs): Likewise.
* elf64-aarch64.c (elf64_aarch64_check_relocs): Likewise.
* elf64-alpha.c (elf64_alpha_check_relocs): Likewise.
* elf64-hppa.c (elf64_hppa_check_relocs): Likewise.
* elf64-ia64-vms.c (elf64_ia64_check_relocs): Likewise.
* elf64-mmix.c (mmix_elf_check_relocs): Likewise.
* elf64-ppc.c (ppc64_elf_check_relocs): Likewise.
* elf64-s390.c (elf_s390_check_relocs): Likewise.
* elf64-sh64.c (sh_elf64_check_relocs): Likewise.
* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Likewise.
* elfnn-ia64.c (elfNN_ia64_check_relocs): Likewise.
* elfnn-riscv.c (riscv_elf_check_relocs): Likewise.
* elfxx-mips.c (_bfd_mips_elf_check_relocs): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_check_relocs): Likewise.
* elfxx-tilegx.c (tilegx_elf_check_relocs): Likewise.
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Since check_reloc is running after gc_sections, there is no need for
reference count. If a function pointer relocation can be resolved at
run-time, there is no need for PLT and it doesn't count as non-GOT/PLT
relocation. func_pointer_refcount can be removed.
* elf32-i386.c (elf_i386_check_relocs): Set plt.refcount to 1.
Don't use func_pointer_refcount. Don't set plt.refcount nor
non_got_ref for function pointer reference.
* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
* elfxx-x86.c (elf_x86_allocate_dynrelocs): Don't use
func_pointer_refcount.
(_bfd_x86_elf_copy_indirect_symbol): Don't copy
func_pointer_refcount.
(_bfd_x86_elf_hide_symbol): Don't use func_pointer_refcount.
* elfxx-x86.h (GENERATE_DYNAMIC_RELOCATION_P): Likewise.
(elf_x86_link_hash_entry): Remove func_pointer_refcount.
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Add plt0_pad_byte and target_os fields to elf_x86_link_hash_table.
Replace elf_i386_backend_data and elf_x86_64_backend_data with
elf_x86_backend_data.
* elf32-i386.c (elf_i386_backend_data): Removed.
(get_elf_i386_backend_data): Likewise.
(elf_i386_arch_bed): Replace elf_i386_backend_data with
elf_x86_backend_data.
(elf_i386_get_synthetic_symtab): Likewise.
(elf_i386_nacl_arch_bed): Likewise.
(elf_i386_vxworks_arch_bed): Likewise.
(elf_i386_relocate_section): Check target_os instead of
is_vxworks.
(elf_i386_finish_dynamic_symbol): Likewise.
(elf_i386_finish_dynamic_sections): Use htab->plt0_pad_byte.
Check target_os instead of is_vxworks.
(elf_i386_link_setup_gnu_properties): Remove normal_target and
is_vxworks. Initialize plt0_pad_byte.
* elf64-x86-64.c (elf_x86_64_backend_data); Removed.
(get_elf_x86_64_arch_data): Likewise.
(get_elf_x86_64_backend_data): Likewise.
(elf_x86_64_arch_bed): Replace elf_x86_64_backend_data with
elf_x86_backend_data.
(elf_x86_64_get_synthetic_symtab): Likewise.
(elf_x86_64_nacl_arch_bed): Likewise.
(elf_x86_64_link_setup_gnu_properties): Remove is_vxworks and
normal_target. Initialize plt0_pad_byte.
* elfxx-x86.c (elf_x86_allocate_dynrelocs): Check target_os
instead of is_vxworks.
(_bfd_x86_elf_size_dynamic_sections): Likewise.
(_bfd_x86_elf_finish_dynamic_sections): Likewise.
(_bfd_x86_elf_adjust_dynamic_symbol): Likewise.
(_bfd_x86_elf_link_hash_table_create): Initialize target_os.
(_bfd_x86_elf_link_setup_gnu_properties): Remove is_vxworks.
Update normal_target. Set up plt0_pad_byte. Check target_os
instead of is_vxworks.
* elfxx-x86.h (elf_x86_target_os): New.
(elf_x86_backend_data): Likewise.
(get_elf_x86_backend_data): Likewise.
(elf_x86_link_hash_table): Remove is_vxworks. Add plt0_pad_byte
and target_os.
(elf_x86_init_table): Remove normal_target and is_vxworks. Add
plt0_pad_byte.
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Extract the common parts of elf_i386_finish_dynamic_sections and
elf_x86_64_finish_dynamic_sections into a separate function in
elfxx-x86.c.
* elf32-i386.c (elf_i386_finish_dynamic_sections): Call
_bfd_x86_elf_finish_dynamic_sections.
* elf64-x86-64.c (elf_x86_64_finish_dynamic_sections): Likewise.
* elfxx-x86.c (_bfd_x86_elf_finish_dynamic_sections): New
function.
* elfxx-x86.h (_bfd_x86_elf_finish_dynamic_sections): New
prototype.
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When there is no dynamic interpreter in PIE, make the undefined weak
symbol dynamic so that PC relative branch to the undefined weak symbol
will land to address 0.
* elf32-i386.c (elf_backend_hide_symbol): New.
* elf64-x86-64.c (elf_backend_hide_symbol): Likewise.
* elfxx-x86.c (_bfd_x86_elf_hide_symbol): Likewise.
* elfxx-x86.h (_bfd_x86_elf_hide_symbol): Likewise.
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Since x86 check_relocs is called after opening all inputs and garbage
collection, they never see the removed sections. There is no need
for incrementing GOT refcount. But since PLT refcount is also used in
/* Don't create the PLT entry if there are only function pointer
relocations which can be resolved at run-time. */
else if (htab->elf.dynamic_sections_created
&& (h->plt.refcount > eh->func_pointer_refcount
|| eh->plt_got.refcount > 0))
{
we must increment it.
* elf32-i386.c (elf_i386_check_relocs): Set GOT refcount to 1
instead of incrementing it.
* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
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Replace has_got_reloc and has_non_got_reloc in elf_x86_link_hash_entry
with zero_undefweak:
Bit 0: Symbol has no GOT nor PLT relocations.
Bit 1: Symbol has non-GOT/non-PLT relocations in text sections.
zero_undefweak is initialized to 1 and undefined weak symbol should be
resolved to 0 if zero_undefweak > 0.
* elf32-i386.c (elf_i386_check_relocs): Replace has_got_reloc
and has_non_got_reloc with zero_undefweak.
* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
* elfxx-x86.c (_bfd_x86_elf_link_hash_newfunc): Initialize
zero_undefweak to 1.
(_bfd_x86_elf_copy_indirect_symbol): Replace has_got_reloc and
has_non_got_reloc with zero_undefweak.
* elfxx-x86.h (UNDEFINED_WEAK_RESOLVED_TO_ZERO): Replace
has_got_reloc and has_non_got_reloc with zero_undefweak.
(elf_x86_link_hash_entry): Likewise.
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Add VERIFY_COPY_RELOC to verify that symbol supports copy relocation.
* elfxx-x86.h (VERIFY_COPY_RELOC): New.
* elf32-i386.c (elf_i386_finish_dynamic_symbol): Use it.
* elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Likewise.
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Add VERIFY_PLT_ENTRY to verify that symbol has an entry in the procedure
linkage table.
* elfxx-x86.h (VERIFY_PLT_ENTRY): New.
* elf32-i386.c (elf_i386_finish_dynamic_symbol): Use it.
* elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Likewise.
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Add COPY_INPUT_RELOC_P which returns TRUE if input relocation should
be copied to output.
* elfxx-x86.h (COPY_INPUT_RELOC_P): New.
* elf32-i386.c (elf_i386_relocate_section): Use it.
* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
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Add GENERATE_DYNAMIC_RELOCATION_P which returns TRUE if dynamic
relocation should be generated.
* elf32-i386.c (X86_SIZE_TYPE_P): New.
(elf_i386_relocate_section): Use GENERATE_DYNAMIC_RELOCATION_P.
* elf64-x86-64.c (X86_SIZE_TYPE_P): New.
(elf_x86_64_relocate_section): Use GENERATE_DYNAMIC_RELOCATION_P.
* elfxx-x86.h (GENERATE_DYNAMIC_RELOCATION_P): New.
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Add POINTER_LOCAL_IFUNC_P which returns TRUE for pointer reference to
local IFUNC symbol. Add PLT_LOCAL_IFUNC_P which returns TRUE for PLT
reference to local IFUNC symbol.
* elfxx-x86.h (POINTER_LOCAL_IFUNC_P): New.
(PLT_LOCAL_IFUNC_P): Likewise.
* elf32-i386.c (elf_i386_relocate_section): Use them.
* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
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Add GENERATE_RELATIVE_RELOC_P which returns TRUE if dynamic relative
relocation should be generated.
* elfxx-x86.h (GENERATE_RELATIVE_RELOC_P): New.
* elf32-i386.c (elf_i386_relocate_section): Use it.
* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
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Add NEED_DYNAMIC_RELOCATION_P which returns TRUE if dynamic relocation
is needed.
* elf32-i386.c (X86_PCREL_TYPE_P): New.
(elf_i386_check_relocs): Use NEED_DYNAMIC_RELOCATION_P.
* elf64-x86-64.c (IS_X86_64_PCREL_TYPE): Renamed to ...
(X86_PCREL_TYPE_P): This.
(elf_x86_64_check_relocs): Use NEED_DYNAMIC_RELOCATION_P.
Replace IS_X86_64_PCREL_TYPE with X86_PCREL_TYPE_P.
(elf_x86_64_relocate_section): Replace IS_X86_64_PCREL_TYPE with
X86_PCREL_TYPE_P.
* elfxx-x86.h (NEED_DYNAMIC_RELOCATION_P): New.
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Add TLS_TRANSITION_IE_TO_LE_P which returns TRUE if TLS IE->LE transition
is OK.
* elfxx-x86.h (TLS_TRANSITION_IE_TO_LE_P): New.
* elf32-i386.c (elf_i386_tls_transition): Use it.
* elf64-x86-64.c (elf_x86_64_tls_transition): Likewise.
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Don't pass output_bfd to info->callbacks->minfo when dumping local IFUNC
functions in the map file.
PR ld/22199
* elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Don't pass
output_bfd to info->callbacks->minfo.
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PR 22172
* elf64-x86-64.c (elf_x86_64_info_to_howto): Do not trigger an
assertion failure if elf_x86_64_rtype_to_howto has already issued
an error message.
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