Add -z bndplt to generate BND prefix in PLT entries
authorIgor Zamyatin <igor.zamyatin@intel.com>
Tue, 18 Nov 2014 07:52:36 +0000 (10:52 +0300)
committerH.J. Lu <hjl.tools@gmail.com>
Tue, 18 Nov 2014 13:40:17 +0000 (05:40 -0800)
commitd258b828287a863376af60a1ef7ceafbccc83d93
treeac8f8a3251ce8afda52a8a190099042fc4b8baca
parent470e2f4e300e5f84b1c35070df43d69b501e0b91
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.
29 files changed:
bfd/ChangeLog
bfd/elf64-x86-64.c
gas/ChangeLog
gas/config/tc-i386-intel.c
gas/config/tc-i386.c
gas/testsuite/ChangeLog
gas/testsuite/gas/i386/x86-64-mpx-branch-1.d
gas/testsuite/gas/i386/x86-64-mpx-branch-2.d
include/ChangeLog
include/bfdlink.h
ld/ChangeLog
ld/emulparams/elf_x86_64.sh
ld/emultempl/elf32.em
ld/ld.texinfo
ld/testsuite/ChangeLog
ld/testsuite/ld-x86-64/bnd-ifunc-1.d
ld/testsuite/ld-x86-64/bnd-ifunc-2.d
ld/testsuite/ld-x86-64/bnd-plt-1.d
ld/testsuite/ld-x86-64/mpx.exp
ld/testsuite/ld-x86-64/mpx1a.rd
ld/testsuite/ld-x86-64/mpx1c.rd
ld/testsuite/ld-x86-64/mpx2a.rd
ld/testsuite/ld-x86-64/mpx2c.rd
ld/testsuite/ld-x86-64/mpx3.dd [new file with mode: 0644]
ld/testsuite/ld-x86-64/mpx3a.s [new file with mode: 0644]
ld/testsuite/ld-x86-64/mpx3b.s [new file with mode: 0644]
ld/testsuite/ld-x86-64/mpx4.dd [new file with mode: 0644]
ld/testsuite/ld-x86-64/mpx4a.s [new file with mode: 0644]
ld/testsuite/ld-x86-64/mpx4b.s [new file with mode: 0644]