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* sysdeps/x86_64/strchrnul.S: New file.

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depending libcrypt on -lfreebl3.
This commit is contained in:
Ulrich Drepper 2009-04-07 23:22:10 +00:00
parent 3db6c9a8ed
commit cd57745bd8
3 changed files with 69 additions and 3 deletions
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4
ChangeLog
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@ -1,7 +1,9 @@
2009-04-07 Ulrich Drepper <drepper@redhat.com>
* sysdeps/x86_64/strchrnul.S: New file.
* crypt/Makefile (LDLIBS-crypt.so): Use this variable instead of
depending libcrypt in -lfreebl3.
depending libcrypt on -lfreebl3.
* sysdeps/unix/sysv/linux/kernel-features.h: Power also has
preadv/pwritev in 2.6.30.

4
NEWS
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@ -1,4 +1,4 @@
GNU C Library NEWS -- history of user-visible changes. 2009-4-6
GNU C Library NEWS -- history of user-visible changes. 2009-4-7
Copyright (C) 1992-2008, 2009 Free Software Foundation, Inc.
See the end for copying conditions.
@ -37,7 +37,7 @@ Version 2.10
* New locales: nan_TW@latin, ks_IN
* Faster strlen, strchr, and memchr on x86-64.
* Faster strlen, strchr, strchrnul, and memchr for x86-64.
Implemented by Ulrich Drepper.

64
sysdeps/x86_64/strchrnul.S Normal file
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@ -0,0 +1,64 @@
/* strchrnul (str, ch) -- Return pointer to first occurrence of CH in STR
or terminating NUL byte.
For AMD x86-64.
Copyright (C) 2009 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>
.text
ENTRY (__strchrnul)
movd %esi, %xmm1
movq %rdi, %rcx
punpcklbw %xmm1, %xmm1
andq $~15, %rdi
pxor %xmm2, %xmm2
punpcklbw %xmm1, %xmm1
orl $0xffffffff, %esi
movdqa (%rdi), %xmm0
pshufd $0, %xmm1, %xmm1
subq %rdi, %rcx
movdqa %xmm0, %xmm3
leaq 16(%rdi), %rdi
pcmpeqb %xmm1, %xmm0
pcmpeqb %xmm2, %xmm3
shl %cl, %esi
pmovmskb %xmm0, %edx
pmovmskb %xmm3, %ecx
andl %esi, %edx
andl %esi, %ecx
orl %edx, %ecx
jnz 1f
2: movdqa (%rdi), %xmm0
leaq 16(%rdi), %rdi
movdqa %xmm0, %xmm3
pcmpeqb %xmm1, %xmm0
pcmpeqb %xmm2, %xmm3
pmovmskb %xmm0, %edx
pmovmskb %xmm3, %ecx
orl %edx, %ecx
jz 2b
1: bsfl %ecx, %edx
leaq -16(%rdi,%rdx), %rax
ret
END (__strchrnul)
weak_alias (__strchrnul, strchrnul)