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| author | H.J. Lu <hjl.tools@gmail.com> | 2012-10-11 13:58:16 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2012-10-11 13:58:16 -0700 |
| commit | 9a387d1f787f764474943294024b02258f14e80a (patch) | |
| tree | 3159228b99a2195dd1347a673a08efefce787ad3 /sysdeps/x86_64/multiarch/bzero.S | |
| parent | 54a417345edca0015e70e8b360b7f83ade5a7507 (diff) | |
| download | glibc-9a387d1f787f764474943294024b02258f14e80a.tar.gz glibc-9a387d1f787f764474943294024b02258f14e80a.tar.xz glibc-9a387d1f787f764474943294024b02258f14e80a.zip | |
Use IFUNC memmove/memset in x86-64 bcopy/bzero
Also add separate tests for bcopy and bzero.
Diffstat (limited to 'sysdeps/x86_64/multiarch/bzero.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/bzero.S | 35 |
1 files changed, 4 insertions, 31 deletions
diff --git a/sysdeps/x86_64/multiarch/bzero.S b/sysdeps/x86_64/multiarch/bzero.S index 92e9fcfc76..23beab7a39 100644 --- a/sysdeps/x86_64/multiarch/bzero.S +++ b/sysdeps/x86_64/multiarch/bzero.S @@ -1,5 +1,5 @@ -/* Multiple versions of bzero - Copyright (C) 2010 Free Software Foundation, Inc. +/* bzero. x86-64 version. + Copyright (C) 2010-2012 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -21,35 +21,8 @@ .text ENTRY(__bzero) - .type __bzero, @gnu_indirect_function - cmpl $0, __cpu_features+KIND_OFFSET(%rip) - jne 1f - call __init_cpu_features -1: leaq __bzero_x86_64(%rip), %rax - testl $bit_Prefer_SSE_for_memop, __cpu_features+FEATURE_OFFSET+index_Prefer_SSE_for_memop(%rip) - jz 2f - leaq __bzero_sse2(%rip), %rax -2: ret -END(__bzero) - - .type __bzero_sse2, @function -__bzero_sse2: - cfi_startproc - CALL_MCOUNT mov %rsi,%rdx /* Adjust parameter. */ xorl %esi,%esi /* Fill with 0s. */ - jmp __memset_sse2 - cfi_endproc - .size __bzero_sse2, .-__bzero_sse2 - - .type __bzero_x86_64, @function -__bzero_x86_64: - cfi_startproc - CALL_MCOUNT - mov %rsi,%rdx /* Adjust parameter. */ - xorl %esi,%esi /* Fill with 0s. */ - jmp __memset_x86_64 - cfi_endproc - .size __bzero_x86_64, .-__bzero_x86_64 - + jmp __libc_memset /* Branch to IFUNC memset. */ +END(__bzero) weak_alias (__bzero, bzero) |