2019-06-24 Ilia Diachkov <ilia.diachkov@optimitech.com>
bfd/
* elfnn-riscv.c (_bfd_riscv_relax_lui): Delete early exit when
SEC_MERGE or SEC_CODE flags are set.
(_bfd_riscv_relax_section): New local symtype. Set sym_sec and
symtype consistently. Don't include sec_addr (sym_sec) in symval.
Add check for SEC_INFO_TYPE_MERGE and call _bfd_merged_section_offset.
Add sec_addr (sym_sec) after handling merge sections.
commit d2ef37ebd9f771d06edf1fdea37970f60b242b2d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Dec 7 08:30:30 2018 -0800
elf: Report property change when merging properties
failed to remove the property after reporting it has been removed. This
patch corrects it.
bfd/
PR ld/24721
* elf-properties.c (elf_merge_gnu_property_list): Remove the
property after reporting property removal.
ld/
PR ld/24721
* testsuite/ld-x86-64/x86-64.exp: Run PR ld/24721 tests.
* testsuite/ld-x86-64/pr24721-x32.d: New file.
* testsuite/ld-x86-64/pr24721.d: Likewise.
* testsuite/ld-x86-64/pr24721.map: Likewise.
* testsuite/ld-x86-64/pr24721a.s: Likewise.
* testsuite/ld-x86-64/pr24721b.s: Likewise.
While the skiboot linker script bears some culpability in this PR,
it's also true that the GOT indirect to GOT relative optimisation for
16-bit offsets isn't safe. At least, it isn't safe to remove the GOT
entry based on distance between the GOT pointer and symbol calculated
from the preliminary layout. So this patch removes that optimisation,
and reduces the range allowed for 32-bit and 34-bit offsets.
PR 24704
bfd/
* elf64-ppc.c (R_PPC64_GOT16_DS): Don't set has_gotrel.
(ppc64_elf_edit_toc): Don't remove R_PPC64_GOT16_DS got entries.
Reduce range of offsets allowed for other GOT relocs.
ld/
* testsuite/ld-powerpc/elfv2exe.d: Update.
* testsuite/ld-powerpc/elfv2so.d: Update.
Depending on optimisation level and gcc version, git commit 890f750a3b
introduces a false positive warning that i_shdrp may be used
uninitialized.
PR 24689
* elfcode.h (elf_object_p): Warning fix.
The testcase in the PR had a e_shstrndx section of type SHT_GROUP.
hdr->contents were initialized by setup_group rather than being read
from the file, thus last byte was not zero and string dereference ran
off the end of the buffer.
PR 24689
* elfcode.h (elf_object_p): Check type of e_shstrndx section.
Calls from functions that don't have a valid toc pointer in r2 (these
calls are marked with _NOTOC relocs) to functions that require r2
valid must go via the callee global entry point. This patch corrects
the condition the linker was using to detect functions that require r2
to be valid. Values of both zero and one in st_other local entry bits
mean a function doesn't care about r2.
* elf64-ppc.c (ppc64_elf_inline_plt): Correct st_other test for
functions that require r2 valid to use local entry.
(ppc64_elf_size_stubs, ppc64_elf_relocate_section): Likewise.
The loc_hash_table should only contain local ifunc symbols. The current
code already aborts if there is anything else and for defined ifunc
symbols elfNN_aarch64_allocate_dynrelocs is a no-op.
bfd/ChangeLog:
* elfnn-aarch64.c (elfNN_aarch64_allocate_local_dynrelocs): Remove.
(elfNN_aarch64_size_dynamic_sections): Remove loc_hash_table traversal
with elfNN_aarch64_allocate_local_dynrelocs.
These ilp32 relocations were missing for some reason.
bfd/ChangeLog:
* elfnn-aarch64.c: Enable MOVW_PREL relocs for ELF32.
include/ChangeLog:
* elf/aarch64.h (R_AARCH64_P32_MOVW_PREL_G0): Define.
(R_AARCH64_P32_MOVW_PREL_G0_NC): Define.
(R_AARCH64_P32_MOVW_PREL_G1): Define.
ld/ChangeLog:
* testsuite/ld-aarch64/aarch64-elf.exp: Add emit-relocs-22 and -23.
* testsuite/ld-aarch64/emit-relocs-22.d: New test.
* testsuite/ld-aarch64/emit-relocs-22.s: New test.
* testsuite/ld-aarch64/emit-relocs-23.d: New test.
* testsuite/ld-aarch64/emit-relocs-23.s: New test.
"paddi rt,sym@pcrel" as an abbreviation for "paddi rt,0,sym@pcrel,1"
is invalid, so replace with "pla rt,sym@pcrel" which is a valid form
of "pla rt,sym@pcrel(0),1".
* elf64-ppc.c: Fix comments involving paddi.
PR 24643
* elf32-arm.c (arm_elf_find_function): Fail if the symol table is
absent, or the bfd is not in the ELF formart.
* elfnn-aarch64.c (aarch64_elf_find_function): Likewise.
PR 24650
* elf.c (elfcore_make_auxv_note_section): New function.
(elfcore_grok_note): Use it.
(elfcore_grok_freebsd_note): Likewise.
(elfcore_grok_openbsd_note): Likewise.
(elfcore_grok_netbsd_note): Likewise. Plus add support for
NT_NETBSDCORE_AUXV notes.
If the new GNU property section was being created by the linker
(this will happen only if none of the inputs have any GNU property
section but the command line to the linker forces a bti with
--force-bti), the alignment of the section and hence the program
header of PT_GNU_PROPERTY type was not being set correctly. This
patch fixes this issue.
bfd/ChangeLog:
2019-06-06 Sudakshina Das <sudi.das@arm.com>
* elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Set
alignment of the new gnu property section.
ld/ChangeLog:
2019-06-06 Sudakshina Das <sudi.das@arm.com>
* testsuite/ld-aarch64/aarch64-elf.exp: Add new tests.
* testsuite/ld-aarch64/property-bti-pac4-a.d: New test.
* testsuite/ld-aarch64/property-bti-pac4-b.d: New test.
* testsuite/ld-aarch64/property-bti-pac4.s: New test.
Overflow checks were removed for all hi16 relocations except PC-relative
high relocations per PR ld/16720. Remove overflow checks from %pcrel_hi
relocations so that we can correctly handle negative offsets from PC.
bfd/
* elfxx-mips.c (mips_elf_calculate_relocation) <R_MIPS_PCHI16>:
Remove overflow check.
ld/
* testsuite/ld-mips-elf/undefweak-overflow.s: Remove test case
for pcrel_hi/pcrel_lo.
* testsuite/ld-mips-elf/undefweak-overflow.d: Update to match.
* testsuite/ld-mips-elf/reloc-pcrel-r6.s: New test source.
* testsuite/ld-mips-elf/reloc-pcrel-r6.d: New test linker script.
* testsuite/ld-mips-elf/reloc-pcrel-r6.ld: New test.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new test.
A plugin can change the element, so call the generic
bfd_link_add_symbols.
PR 24596
* cofflink.c (coff_link_check_archive_element): Don't assume
element is a coff object file after calling add_archive_element.
This patch cures a linker segfault, and "FAIL: Build pr22263-1".
PR 24596
* elf64-alpha.c (elf64_alpha_relocate_section): Don't attempt
to emit R_ALPHA_GOTTPREL in PIEs, for which no space is
allocated in alpha_dynamic_entries_for_reloc.
This doesn't fix the underlying bug, but an abort is better than a
segfault.
PR 24596
* elf32-m68k.c (elf_m68k_get_got_entry): Don't create a new
entry when MUST_FIND. Abort when MUST_FIND not found.
(elf_m68k_get_bfd2got_entry): Likewise.
(elf_m68k_relocate_section): Remove now useless assert.
One of the ld tests produces:
failed with: <Segmentation fault>, no expected output
FAIL: Discarded dynamic relocation section
This patch cures the segv. (The test still fails with ld producing
a really messed up output, DT_RELA at address 0!)
PR 24596
* elf64-hppa.c (elf64_hppa_finalize_dynreloc): Get the output bfd
from bfd_link_info, not an output section owner.
(elf64_hppa_finish_dynamic_symbol, elf64_hppa_finalize_opd): Likewise.
(elf_hppa_final_link_relocate): Likewise.
