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cd04836359
binutils-gdb/bfd/ChangeLog
H.J. Lu cd04836359 x86: Remove the unused _GLOBAL_OFFSET_TABLE_ 
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.
2018-02-05 08:38:16 -08:00

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2018-02-05 H.J. Lu <hongjiu.lu@intel.com>
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.
2018-02-05 Maciej W. Rozycki <macro@mips.com>
* elfnn-riscv.c (_bfd_riscv_relax_pc): Use `memset' to
initialize `hi_reloc'.
2018-02-05 Maciej W. Rozycki <macro@mips.com>
* elfxx-mips.c (_bfd_mips_elf_section_processing): For
SHT_MIPS_REGINFO sections don't assert the correct size and
report an error instead.
2018-02-05 Maciej W. Rozycki <macro@mips.com>
* elf.c (_bfd_elf_write_object_contents): Propagate a failure
status from `->elf_backend_section_processing'.
2018-02-02 Jim Wilson <jimw@sifive.com>
PR ld/22756
* elfnn-riscv.c (riscv_relax_delete_bytes): New parameter link_info.
If link_info->wrap_hash, check for a duplicate symbol and ignore.
(_bfd_riscv_relax_call, bfd_riscv_relax_lui, _bfd_riscv_relax_tls_le):
Pass new argument to riscv_relax_delete_bytes.
(_bfd_riscv_relax_align, _bfd_riscv_relax_delete): Likewise. Remove
ATTRIBUTE_UNUSED from link_info parameter.
2018-02-02 Alan Modra <amodra@gmail.com>
* elf64-ppc.c (ppc64_elf_relocate_section): Don't relocate nops
emitted for toc sequence optimization. Set and use "howto" later.
2018-02-01 Simon Marchi <simon.marchi@ericsson.com>
* elf64-ppc.c (ppc64_elf_archive_symbol_lookup): Avoid pointer
arithmetic on NULL pointer.
* elflink.c (_bfd_elf_archive_symbol_lookup,
elf_link_add_archive_symbols): Likewise.
2018-01-31 Michael Matz <matz@suse.de>
* elflink.c (bfd_elf_define_start_stop): Fix check of
def_dynamic.
2018-01-31 H.J. Lu <hongjiu.lu@intel.com>
PR ld/21964
* elflink.c (bfd_elf_define_start_stop): Check if __start and
__stop symbols are referenced by shared objects.
2018-01-30 Alan Modra <amodra@gmail.com>
PR 22758
* elf.c (_bfd_elf_map_sections_to_segments): Don't start a new
segment when demand paged with lma on the same page. Test this
before load/non-load, executable/non-executable,
writable/non-writable tests and simplify. Delete bogus relro
condition in writable/non-writable test. Delete outdated
comment. Formatting.
2018-01-30 Alan Modra <amodra@gmail.com>
* elflink.c (bfd_elf_define_start_stop): Make __start and __stop
symbols dynamic.
2018-01-29 Alan Modra <amodra@gmail.com>
PR 22741
* coffgen.c (coff_pointerize_aux): Ensure auxent tagndx is in
range before converting to a symbol table pointer.
2018-01-27 Nick Clifton <nickc@redhat.com>
* po/ru.po: Updated Russian translation.
2018-01-26 Alan Modra <amodra@gmail.com>
* elflink.c (bfd_elf_define_start_stop): Override symbols when
they are defined dynamically.
2018-01-26 Alan Modra <amodra@gmail.com>
* elf64-ppc.c (ppc64_elf_size_stubs): Iterate sizing when
.branch_lt changes size.
2018-01-25 Alan Modra <amodra@gmail.com>
PR 22746
* elfcode.h (elf_object_p): Avoid integer overflow.
2018-01-25 Eric Botcazou <ebotcazou@adacore.com>
PR ld/22727
* elfxx-sparc.c (_bfd_sparc_elf_check_relocs) <R_SPARC_TLS_GD_CALL>:
Do a mere lookup of the __tls_get_addr symbol instead of adding it.
Revert
2017-10-19 H.J. Lu <hongjiu.lu@intel.com>
PR ld/22263
* elfxx-sparc.c (sparc_elf_tls_transition): Replace
bfd_link_pic with !bfd_link_executable, !bfd_link_pic with
bfd_link_executable for TLS check.
(_bfd_sparc_elf_check_relocs): Likewise.
(allocate_dynrelocs): Likewise.
(_bfd_sparc_elf_relocate_section): Likewise.
2018-01-24 Renlin Li <renlin.li@arm.com>
* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Add support for
BFD_RELOC_AARCH64_MOVW_PREL_G0, BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G1, BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G2, BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G3.
* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Likewise.
(_bfd_aarch64_elf_resolve_relocation): Likewise.
2018-01-24 Renlin Li <renlin.li@arm.com>
* reloc.c: Add BFD_RELOC_AARCH64_MOVW_PREL_G0,
BFD_RELOC_AARCH64_MOVW_PREL_G0_NC, BFD_RELOC_AARCH64_MOVW_PREL_G1,
BFD_RELOC_AARCH64_MOVW_PREL_G1_NC, BFD_RELOC_AARCH64_MOVW_PREL_G2,
BFD_RELOC_AARCH64_MOVW_PREL_G2_NC, BFD_RELOC_AARCH64_MOVW_PREL_G3.
* elfnn-aarch64.c (elfNN_aarch64_howto_table): Add entries for
BFD_RELOC_AARCH64_MOVW_PREL_G0, BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G1, BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G2, BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
BFD_RELOC_AARCH64_MOVW_PREL_G3.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
2018-01-23 Maciej W. Rozycki <macro@mips.com>
* elfxx-mips.c (_bfd_mips_elf_final_link): Update a stale
`mips_elf32_section_processing' comment reference.
2018-01-20 H.J. Lu <hongjiu.lu@intel.com>
PR ld/22721
* elfxx-x86.c (_bfd_x86_elf_link_check_relocs): Check the
versioned __tls_get_addr symbol.
2018-01-19 Nick Clifton <nickc@redhat.com>
* po/fr.po: Updated French translation.
2018-01-18 Alan Modra <amodra@gmail.com>
* elf32-ppc.c (ppc_elf_create_glink): Correct alignment of .glink.
* elf64-ppc.c (ppc64_elf_size_stubs): Handle negative plt_stub_align.
(ppc64_elf_build_stubs): Likewise.
2018-01-17 Nick Clifton <nickc@redhat.com>
* po/ru.po: Updated Russian translation.
* po/uk/po: Updated Ukranian translation.
2018-01-17 Alan Modra <amodra@gmail.com>
* elf64-ppc.c (ppc64_elf_build_stubs): Silence gcc warning.
2018-01-17 Alan Modra <amodra@gmail.com>
* elf32-ppc.c (GLINK_ENTRY_SIZE): Handle speculation barrier.
(CRSETEQ, BEQCTRM): Define.
(is_nonpic_glink_stub): Don't check bctr.
(ppc_elf_link_hash_table_create): Init new ppc_elf_params field.
(ppc_elf_relax_section): Size speculation barrier.
(output_bctr): New function.
(write_glink_stub): Use output_bctr.
(ppc_elf_relocate_section): Use output_bctr for long branch stub.
(ppc_elf_finish_dynamic_symbol): Likewise.
(ppc_elf_finish_dynamic_sections): Use output_bctr.
* elf32-ppc.h (struct ppc_elf_params): Add speculate_indirect_jumps.
* elf64-ppc.c (CRSETEQ, BEQCTRM, BEQCTRLM): Define.
(GLINK_PLTRESOLVE_SIZE): Size speculation barrier.
(size_global_entry_stubs): Handle speculation barrier sizing.
(plt_stub_size): Likewise.
(output_bctr): New function.
(build_plt_stub, build_tls_get_addr_stub): Output speculation
barrier.
(ppc_build_one_stub): Likewise for ppc_stub_plt_branch.
(ppc_size_one_stub): Size speculation barrier in ppc_stub_plt_branch.
(build_global_entry_stubs): Output speculation barrier.
(ppc64_elf_build_stubs): Likewise in __glink_PLTresolve stub.
* elf64-ppc.h (struct ppc64_elf_params): Add speculate_indirect_jumps.
2018-01-17 Alan Modra <amodra@gmail.com>
* elf32-ppc.c (GLINK_ENTRY_SIZE): Add parameters, handle
__tls_get_addr_opt, and alignment sizing.
(TLS_GET_ADDR_GLINK_SIZE): Delete.
(is_nonpic_glink_stub): Don't use GLINK_ENTRY_SIZE.
(ppc_elf_get_synthetic_symtab): Recognize stubs spaced at 4, 6,
or 8 insns.
(ppc_elf_link_hash_table_create): Init new ppc_elf_params field.
(allocate_dynrelocs): Use new GLINK_ENTRY_SIZE.
(ppc_elf_size_dynamic_sections): Likewise. Size branch table
by PLT reloc count.
(write_glink_stub): Handle __tls_get_addr_opt stub.
Pad out to size given by GLINK_ENTRY_SIZE.
(ppc_elf_relocate_section): Adjust write_glink_stub call.
(ppc_elf_finish_dynamic_symbol): Likewise.
(ppc_elf_finish_dynamic_sections): Write PLTresolve without using
insn array since so many need rewriting.
* elf32-ppc.h (struct ppc_elf_params): Add plt_stub_align.
* elf64-ppc.c (GLINK_PLTRESOLVE_SIZE): Rename from
GLINK_CALL_STUB_SIZE. Add htab param and evaluate to size without
nops. Adjust all uses.
(ppc64_elf_get_synthetic_symtab): Don't use GLINK_CALL_STUB_SIZE
in glink_vma calculation.
(struct ppc_link_hash_table): Add global_entry section pointer.
(create_linkage_sections): Create separate section for global
entry stubs.
(PPC_LO, PPC_HI, PPC_HA): Move earlier.
(size_global_entry_stubs): Handle sizing for aligned stubs.
(ppc64_elf_size_dynamic_sections): Handle global_entry alloc,
and don't stash end of glink branch table in rawsize.
(ppc_build_one_stub): Rewrite stub size calculations.
(build_global_entry_stubs): Use new section.
(ppc64_elf_build_stubs): Don't pad __glink_PLTresolve with nops.
Build lazy link stubs out to end of section. Build global entry
stubs in new section.
2018-01-15 Nick Clifton <nickc@redhat.com>
* po/uk.po: Updated Ukranian translation.
2018-01-13 Nick Clifton <nickc@redhat.com>
* po/bfd.pot: Regenerated.
2018-01-13 Nick Clifton <nickc@redhat.com>
* version.m4: Bump version to 2.30.51
* configure: Regenerate.
2018-01-13 Nick Clifton <nickc@redhat.com>
2.30 branch created.
2018-01-12 Jens Widell <jl@opera.com>
* elf.c (setup_group): Optimize search for group by remembering
last found group and restarting search at that index.
* elf-bfd.h (struct elf_obj_tdata): Add group_search_offset field.
2018-01-12 Gunther Nikl <gnikl@users.sourceforge.net>
* aoutx.h (aout_link_check_ar_symbols): Remove default and handle
bfd_link_common_skip_none in switch.
2018-01-12 Alan Modra <amodra@gmail.com>
PR ld/22649
* elf64-ppc.c (ppc64_elf_gc_mark_dynamic_ref): Ignore dynamic
references on forced local symbols.
2018-01-12 Vlad Ivanov <vlad@ivanov.email>
* elfxx-mips.c (_bfd_mips_elf_final_link): Notify user when
.reginfo section has wrong size.
2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
PR ld/22393
* elf.c (_bfd_elf_map_sections_to_segments): When generating
separate code and read-only data LOAD segments, create a new
LOAD segment if the previous section contains text and the
current section doesn't or vice versa. Don't put a writable
section in a read-only segment if there is a RELRO segment.
2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
PR ld/22649
* elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Ignore dynamic
references on forced local symbols.
2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
PR ld/22677
* elflink.c (bfd_elf_gc_sections): Keep all PREINIT_ARRAY,
INIT_ARRAY as well as FINI_ARRAY sections for ld -r --gc-section.
2017-09-27 Kuan-Lin Chen <kuanlinchentw@gmail.com>
PR 22662
* elf32-nds32.c (nds32_elf_relax_loadstore): Fix a typographical error.
2018-01-03 John Baldwin <jhb@FreeBSD.org>
* elf.c (elfcore_grok_freebsd_note): Handle
NT_FREEBSD_PROCSTAT_PROC, NT_FREEBSD_PROCSTAT_FILES, and
NT_FREEBSD_PROCSTAT_VMMAP.
2018-01-03 Alan Modra <amodra@gmail.com>
Update year range in copyright notice of all files.
For older changes see ChangeLog-2017
Copyright (C) 2018 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
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mode: change-log
left-margin: 8
fill-column: 74
version-control: never
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