diff options
author | Jakub Jelinek <jakub@redhat.com> | 2009-04-14 21:18:57 +0000 |
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committer | Jakub Jelinek <jakub@redhat.com> | 2009-04-14 21:18:57 +0000 |
commit | ded8b949ca91eae8bfcc9d3337913dda620416b3 (patch) | |
tree | b5d9f4c36dcce925adb8b4b64ffbfb5d4e1debfe /sysdeps/x86_64/rawmemchr.S | |
parent | 5cb5c2a33524f2332f107c4e78737086f57b0e0b (diff) |
Updated to fedora-glibc-20090414T2104cvs/fedora-glibc-2_9_90-16
Diffstat (limited to 'sysdeps/x86_64/rawmemchr.S')
-rw-r--r-- | sysdeps/x86_64/rawmemchr.S | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sysdeps/x86_64/rawmemchr.S b/sysdeps/x86_64/rawmemchr.S new file mode 100644 index 0000000000..c3bd771635 --- /dev/null +++ b/sysdeps/x86_64/rawmemchr.S @@ -0,0 +1,54 @@ +/* Copyright (C) 2009 Free Software Foundation, Inc. + Contributed by Ulrich Drepper <drepper@redhat.com>. + 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> + + + .text +ENTRY (rawmemchr) + movd %esi, %xmm1 + movq %rdi, %rcx + punpcklbw %xmm1, %xmm1 + andq $~15, %rdi + punpcklbw %xmm1, %xmm1 + orl $0xffffffff, %esi + movdqa (%rdi), %xmm0 + pshufd $0, %xmm1, %xmm1 + subq %rdi, %rcx + pcmpeqb %xmm1, %xmm0 + shl %cl, %esi + pmovmskb %xmm0, %ecx + leaq 16(%rdi), %rdi + andl %esi, %ecx + jnz 1f + +2: movdqa (%rdi), %xmm0 + leaq 16(%rdi), %rdi + pcmpeqb %xmm1, %xmm0 + pmovmskb %xmm0, %ecx + testl %ecx, %ecx + jz 2b + +1: bsfl %ecx, %ecx + leaq -16(%rcx,%rdi), %rax + ret +END (rawmemchr) + +strong_alias (rawmemchr, __rawmemchr) +libc_hidden_builtin_def (__rawmemchr) |