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| author | Ulrich Drepper <drepper@gmail.com> | 2011-11-13 09:50:13 -0500 |
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| committer | Ulrich Drepper <drepper@gmail.com> | 2011-11-13 09:50:13 -0500 |
| commit | 76e3966e9efc3808a9e7ad09121c5dfc1211c20b (patch) | |
| tree | 7750f566972dcf12742c3881b5ca3a12cd3a6c49 /sysdeps/i386/i686/multiarch/strncase.S | |
| parent | 7edb22eff50b957c5b40815d0974639db19f5870 (diff) | |
| download | glibc-76e3966e9efc3808a9e7ad09121c5dfc1211c20b.tar.gz glibc-76e3966e9efc3808a9e7ad09121c5dfc1211c20b.tar.xz glibc-76e3966e9efc3808a9e7ad09121c5dfc1211c20b.zip | |
SSSE3 optimized strcasecmp and strncasecmp for x86-32
Diffstat (limited to 'sysdeps/i386/i686/multiarch/strncase.S')
| -rw-r--r-- | sysdeps/i386/i686/multiarch/strncase.S | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sysdeps/i386/i686/multiarch/strncase.S b/sysdeps/i386/i686/multiarch/strncase.S new file mode 100644 index 0000000000..9b697d1bbc --- /dev/null +++ b/sysdeps/i386/i686/multiarch/strncase.S @@ -0,0 +1,71 @@ +/* Entry point for multi-version x86 strncasecmp. + Copyright (C) 2011 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 + 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> + +#ifdef SHARED + .text +ENTRY(__strncasecmp) + .type __strncasecmp, @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 __strncasecmp_ia32@GOTOFF(%ebx), %eax + testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx) + jz 2f + leal __strncasecmp_ssse3@GOTOFF(%ebx), %eax +#if 0 + // XXX Temporarily + testl $bit_SSE4_2, CPUID_OFFSET+index_SSE4_2+__cpu_features@GOTOFF(%ebx) + jz 2f + leal __strncasecmp_sse4_2@GOTOFF(%ebx), %eax +#endif +2: popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) + ret +END(__strncasecmp) +#else + .text +ENTRY(__strncasecmp) + .type __strncasecmp, @gnu_indirect_function + cmpl $0, KIND_OFFSET+__cpu_features + jne 1f + call __init_cpu_features +1: leal __strncasecmp_ia32, %eax + testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features + jz 2f + leal __strncasecmp_ssse3, %eax +#if 0 + // XXX Temporarily + testl $bit_SSE4_2, CPUID_OFFSET+index_SSE4_2+__cpu_features + jz 2f + leal __strncasecmp_sse4_2, %eax +#endif +2: ret +END(__strncasecmp) +#endif + +weak_alias (__strncasecmp, strncasecmp) |