diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2006-06-30 14:16:13 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2006-06-30 14:16:13 +0000 |
| commit | 10efb593b775f1426395c4521a11c4ec2fe6bc19 (patch) | |
| tree | 3c5f51d8afcfb9971ecf887285fcffa974c1289b /bfd | |
| parent | 53b8873bef9753edf97fa8ef2bcabefd566bcd48 (diff) | |
| download | gdb-10efb593b775f1426395c4521a11c4ec2fe6bc19.zip gdb-10efb593b775f1426395c4521a11c4ec2fe6bc19.tar.gz gdb-10efb593b775f1426395c4521a11c4ec2fe6bc19.tar.bz2 | |
bfd/
2006-06-30 H.J. Lu <hongjiu.lu@intel.com>
* elf32-i386.c (elf_i386_relocate_section): Use xchg %ax,%ax
instead of 2 nops.
* elf64-x86-64.c (elf64_x86_64_relocate_section): Likewise.
(elf64_x86_64_plt0_entry): Use nopl 0(%rax) instead of 4 nops.
ld/testsuite/
2006-06-30 H.J. Lu <hongjiu.lu@intel.com>
* ld-i386/tlsbindesc.dd: Updated to expect xchg %ax,%ax instead
of 2 nops.
* ld-i386/tlsdesc.dd: Likewise.
* ld-i386/tlsgdesc.dd: Likewise.
* ld-x86-64/tlsbindesc.dd: Likewise.
* ld-x86-64/tlsdesc.dd: Likewise.
* ld-x86-64/tlsdesc.pd: Likewise.
* ld-x86-64/tlsgdesc.dd: Likewise.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 7 | ||||
| -rw-r--r-- | bfd/elf32-i386.c | 9 | ||||
| -rw-r--r-- | bfd/elf64-x86-64.c | 12 |
3 files changed, 19 insertions, 9 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 0367406..760e5d4 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,10 @@ +2006-06-30 H.J. Lu <hongjiu.lu@intel.com> + + * elf32-i386.c (elf_i386_relocate_section): Use xchg %ax,%ax + instead of 2 nops. + * elf64-x86-64.c (elf64_x86_64_relocate_section): Likewise. + (elf64_x86_64_plt0_entry): Use nopl 0(%rax) instead of 4 nops. + 2006-06-29 Jakub Jelinek <jakub@redhat.com> PR ld/2513 diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index bb2ee15..35b0525 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -2821,8 +2821,9 @@ elf_i386_relocate_section (bfd *output_bfd, val = bfd_get_8 (input_bfd, contents + roff + 1); BFD_ASSERT (val == 0x10); - /* Now modify the instruction as appropriate. */ - bfd_put_8 (output_bfd, 0x90, contents + roff); + /* Now modify the instruction as appropriate. Use + xchg %ax,%ax instead of 2 nops. */ + bfd_put_8 (output_bfd, 0x66, contents + roff); bfd_put_8 (output_bfd, 0x90, contents + roff + 1); continue; } @@ -3227,8 +3228,8 @@ elf_i386_relocate_section (bfd *output_bfd, /* Now modify the instruction as appropriate. */ if (tls_type != GOT_TLS_IE_NEG) { - /* nop; nop */ - bfd_put_8 (output_bfd, 0x90, contents + roff); + /* xchg %ax,%ax */ + bfd_put_8 (output_bfd, 0x66, contents + roff); bfd_put_8 (output_bfd, 0x90, contents + roff + 1); } else diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c index c72a994..b9cf0a3 100644 --- a/bfd/elf64-x86-64.c +++ b/bfd/elf64-x86-64.c @@ -350,7 +350,7 @@ static const bfd_byte elf64_x86_64_plt0_entry[PLT_ENTRY_SIZE] = { 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ - 0x90, 0x90, 0x90, 0x90 /* pad out to 16 bytes with nops. */ + 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ }; /* Subsequent entries in a procedure linkage table look like this. */ @@ -2617,8 +2617,9 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info, val = bfd_get_8 (input_bfd, contents + roff + 1); BFD_ASSERT (val == 0x10); - /* Now modify the instruction as appropriate. */ - bfd_put_8 (output_bfd, 0x90, contents + roff); + /* Now modify the instruction as appropriate. Use + xchg %ax,%ax instead of 2 nops. */ + bfd_put_8 (output_bfd, 0x66, contents + roff); bfd_put_8 (output_bfd, 0x90, contents + roff + 1); continue; } @@ -2910,8 +2911,9 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info, val = bfd_get_8 (input_bfd, contents + roff + 1); BFD_ASSERT (val == 0x10); - /* Now modify the instruction as appropriate. */ - bfd_put_8 (output_bfd, 0x90, contents + roff); + /* Now modify the instruction as appropriate. Use + xchg %ax,%ax instead of 2 nops. */ + bfd_put_8 (output_bfd, 0x66, contents + roff); bfd_put_8 (output_bfd, 0x90, contents + roff + 1); continue; |