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| author | Ulrich Drepper <drepper@gmail.com> | 2011-09-05 13:53:27 -0400 |
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| committer | Ulrich Drepper <drepper@gmail.com> | 2011-09-05 13:53:27 -0400 |
| commit | 1b48c537821e27cf9b9c489e8773ba1d84f97b3e (patch) | |
| tree | 586551f091846a97ec5102994e2111b3f4651c5e /sysdeps/i386/i686/multiarch/wcscmp.S | |
| parent | 109715ee229b0ddff1d0d2585f910bb4fd49a61c (diff) | |
| download | glibc-1b48c537821e27cf9b9c489e8773ba1d84f97b3e.tar glibc-1b48c537821e27cf9b9c489e8773ba1d84f97b3e.tar.gz glibc-1b48c537821e27cf9b9c489e8773ba1d84f97b3e.tar.bz2 glibc-1b48c537821e27cf9b9c489e8773ba1d84f97b3e.zip | |
Add x86-32 optimized wcscmp
Diffstat (limited to 'sysdeps/i386/i686/multiarch/wcscmp.S')
| -rw-r--r-- | sysdeps/i386/i686/multiarch/wcscmp.S | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/sysdeps/i386/i686/multiarch/wcscmp.S b/sysdeps/i386/i686/multiarch/wcscmp.S new file mode 100644 index 0000000000..4abb68a06e --- /dev/null +++ b/sysdeps/i386/i686/multiarch/wcscmp.S @@ -0,0 +1,58 @@ +/* Multiple versions of wcscmp + Copyright (C) 2011 Free Software Foundation, Inc. + Contributed by Intel Corporation. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#include <init-arch.h> + +/* Define multiple versions only for the definition in libc and for the + DSO. In static binaries, we need wcscmp before the initialization + happened. */ +#ifndef NOT_IN_libc + .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits + .globl __i686.get_pc_thunk.bx + .hidden __i686.get_pc_thunk.bx + .p2align 4 + .type __i686.get_pc_thunk.bx,@function +__i686.get_pc_thunk.bx: + movl (%esp), %ebx + ret + + .text +ENTRY(wcscmp) + .type wcscmp, @gnu_indirect_function + pushl %ebx + cfi_adjust_cfa_offset (4) + cfi_rel_offset (ebx, 0) + call __i686.get_pc_thunk.bx + addl $_GLOBAL_OFFSET_TABLE_, %ebx + cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) + jne 1f + call __init_cpu_features +1: leal __wcscmp_ia32@GOTOFF(%ebx), %eax + testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) + jz 2f + leal __wcscmp_sse2@GOTOFF(%ebx), %eax +2: popl %ebx + cfi_adjust_cfa_offset (-4); + cfi_restore (ebx) + ret +END(wcscmp) +#endif + |