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| author | Igor Zamyatin <igor.zamyatin@intel.com> | 2014-11-18 10:52:36 +0300 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2014-11-18 05:40:17 -0800 |
| commit | d258b828287a863376af60a1ef7ceafbccc83d93 (patch) | |
| tree | ac8f8a3251ce8afda52a8a190099042fc4b8baca /bfd | |
| parent | 470e2f4e300e5f84b1c35070df43d69b501e0b91 (diff) | |
| download | gdb-d258b828287a863376af60a1ef7ceafbccc83d93.zip gdb-d258b828287a863376af60a1ef7ceafbccc83d93.tar.gz gdb-d258b828287a863376af60a1ef7ceafbccc83d93.tar.bz2 | |
Add -z bndplt to generate BND prefix in PLT entries
This patch adds "-z bndplt" option Linux/x86-64 linker to generate BND
prefix in PLT entries. It also updated Linux/x86-64 assembler not to
generate R_X86_64_PLT32_BND nor R_X86_64_PC32_BND relocations.
bfd/
2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com>
* elf64-x86-64.c (elf_x86_64_check_relocs): Enable MPX PLT only
for -z bndplt.
gas/
2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com>
* config/tc-i386-intel.c (i386_operator): Remove last argument
from lex_got call.
* config/tc-i386.c (reloc): Remove bnd_prefix from parameters'
list. Return always BFD_RELOC_32_PCREL.
* (output_branch): Remove condition for BFD_RELOC_X86_64_PC32_BND.
* (output_jump): Update call to reloc accordingly.
* (output_interseg_jump): Likewise.
* (output_disp): Likewise.
* (output_imm): Likewise.
* (x86_cons_fix_new): Likewise.
* (lex_got): Remove bnd_prefix from parameters' list in macro and
declarations. Don't use BFD_RELOC_X86_64_PLT32_BND.
* (x86_cons): Update call to lex_got accordingly.
* (i386_immediate): Likewise.
* (i386_displacement): Likewise.
* (md_apply_fix): Don't use BFD_RELOC_X86_64_PLT32_BND nor
BFD_RELOC_X86_64_PC32_BND.
* (tc_gen_reloc): Likewise.
include/
2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com>
* bfdlink.h (struct bfd_link_info): Add bndplt.
ld/
2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com>
* emulparams/elf_x86_64.sh (BNDPLT): Set to yes for x86_64.
* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Handle
"-z bndplt" if BNDPLT is yes.
(gld${EMULATION_NAME}_list_options): Add "-z bndplt" entry.
* ld.texinfo: Add description for bndplt.
ld/testsuite/
2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com>
* testsuite/ld-x86-64/bnd-ifunc-1.d: Add bndplt option.
* testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise.
* testsuite/ld-x86-64/bnd-plt-1.d: Likewise. Update dissassembly
sections.
* testsuite/ld-x86-64/mpx.exp: Handle mpx3 and mpx4 tests.
* testsuite/ld-x86-64/mpx1a.rd: Remove _BND from relocation name.
* testsuite/ld-x86-64/mpx1c.rd: Likewise.
* testsuite/ld-x86-64/mpx2a.rd: Likewise.
* testsuite/ld-x86-64/mpx2c.rd: Likewise.
* testsuite/ld-x86-64/mpx3.dd: New file.
* testsuite/ld-x86-64/mpx3a.s: Likewise.
* testsuite/ld-x86-64/mpx3b.s: Likewise.
* testsuite/ld-x86-64/mpx4.dd: Likewise.
* testsuite/ld-x86-64/mpx4a.s: Likewise.
* testsuite/ld-x86-64/mpx4b.s: Likewise.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 5 | ||||
| -rw-r--r-- | bfd/elf64-x86-64.c | 13 |
2 files changed, 12 insertions, 6 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 015acda..f8ca71b 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,8 @@ +2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com> + + * elf64-x86-64.c (elf_x86_64_check_relocs): Enable MPX PLT only + for -z bndplt. + 2014-11-14 Nick Clifton <nickc@redhat.com> PR binutils/17597 diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c index f2b13e7..20f45a9 100644 --- a/bfd/elf64-x86-64.c +++ b/bfd/elf64-x86-64.c @@ -1629,11 +1629,16 @@ elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, case R_X86_64_PC32_BND: case R_X86_64_PLT32_BND: + case R_X86_64_PC32: + case R_X86_64_PLT32: + case R_X86_64_32: + case R_X86_64_64: /* MPX PLT is supported only if elf_x86_64_arch_bed is used in 64-bit mode. */ if (ABI_64_P (abfd) - && (get_elf_x86_64_backend_data (abfd) - == &elf_x86_64_arch_bed)) + && info->bndplt + && (get_elf_x86_64_backend_data (abfd) + == &elf_x86_64_arch_bed)) { elf_x86_64_hash_entry (h)->has_bnd_reloc = TRUE; @@ -1675,11 +1680,7 @@ elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, } case R_X86_64_32S: - case R_X86_64_32: - case R_X86_64_64: - case R_X86_64_PC32: case R_X86_64_PC64: - case R_X86_64_PLT32: case R_X86_64_GOTPCREL: case R_X86_64_GOTPCREL64: if (htab->elf.dynobj == NULL) |