+2011-10-23 Ulrich Drepper <drepper@gmail.com>
+
+ * string/strnlen.c: Define and use STRNLEN macro.
+ * sysdeps/i386/i686/multiarch/Makefile [string] (sysdep_routines):
+ Add strnlen-sse2, strnlen-c, wcslen-sse2, and wcslen-c.
+ * sysdeps/i386/i686/multiarch/strlen-sse2.S: Add support for strnlen.
+ * wcsmbs/wcslen.c: Define and use WCSLEN.
+ * sysdeps/i386/i686/multiarch/strnlen-c.c: New file.
+ * sysdeps/i386/i686/multiarch/strnlen-sse2.S: New file.
+ * sysdeps/i386/i686/multiarch/strnlen.S: New file.
+ * sysdeps/i386/i686/multiarch/wcslen-c.c: New file.
+ * sysdeps/i386/i686/multiarch/wcslen-sse2.S: New file.
+ * sysdeps/i386/i686/multiarch/wcslen.S: New file.
+ Patch by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>.
+
2011-10-20 Liubov Dmitrieva <liubov.dmitrieva@gmail.com>
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
* Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
Contributed by HJ Lu.
-* Optimized strcat, strncat, wcslen, strnlen on x86-64 and optimized
- wcscmp on x86-32 and x86-64.
+* Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
+ on x86-32 and x86-64.
Contributed by Liubov Dmitrieva.
* Optimized strchr and strrchr for SSE on x86-32.
/* Find the length of STRING, but scan at most MAXLEN characters.
- Copyright (C) 1991,1993,1997,2000,2001,2005 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1993, 1997, 2000, 2001, 2005, 2011 Free Software Foundation, Inc.
Contributed by Jakub Jelinek <jakub@redhat.com>.
Based on strlen written by Torbjorn Granlund (tege@sics.se),
/* Find the length of S, but scan at most MAXLEN characters. If no
'\0' terminator is found in that many characters, return MAXLEN. */
+
+#ifndef STRNLEN
+# define STRNLEN __strnlen
+#endif
+
size_t
-__strnlen (const char *str, size_t maxlen)
+STRNLEN (const char *str, size_t maxlen)
{
const char *char_ptr, *end_ptr = str + maxlen;
const unsigned long int *longword_ptr;
char_ptr = end_ptr;
return char_ptr - str;
}
+#ifndef STRNLEN
weak_alias (__strnlen, strnlen)
+#endif
libc_hidden_def (strnlen)
wcscmp-sse2 wcscmp-c memchr-sse2 memchr-sse2-bsf \
memrchr-sse2 memrchr-sse2-bsf memrchr-c \
rawmemchr-sse2 rawmemchr-sse2-bsf \
+ strnlen-sse2 strnlen-c wcslen-sse2 wcslen-c \
wmemcmp-sse4 wmemcmp-ssse3 wmemcmp-c
ifeq (yes,$(config-cflags-sse4))
sysdep_routines += strcspn-c strpbrk-c strspn-c strstr-c strcasestr-c
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#if (defined USE_AS_STRCAT || defined SHARED) && !defined NOT_IN_libc
+/* for strlen only SHARED version is optimized, for strcat, strncat, strnlen both STATIC and SHARED are optimized */
+
+#if (defined USE_AS_STRNLEN || defined USE_AS_STRCAT || defined SHARED) && !defined NOT_IN_libc
+
# ifndef USE_AS_STRCAT
# include <sysdep.h>
-# define CFI_PUSH(REG) \
+# define PARMS 4
+# define STR PARMS
+# define RETURN ret
+
+# ifdef USE_AS_STRNLEN
+# define LEN PARMS + 8
+# define CFI_PUSH(REG) \
cfi_adjust_cfa_offset (4); \
cfi_rel_offset (REG, 0)
-# define CFI_POP(REG) \
+# define CFI_POP(REG) \
cfi_adjust_cfa_offset (-4); \
cfi_restore (REG)
-# define PUSH(REG) pushl REG; CFI_PUSH (REG)
-# define POP(REG) popl REG; CFI_POP (REG)
-# define PARMS 4
-# define STR PARMS
-# define ENTRANCE
-# define RETURN ret
+# define PUSH(REG) pushl REG; CFI_PUSH (REG)
+# define POP(REG) popl REG; CFI_POP (REG)
+# undef RETURN
+# define RETURN POP (%edi); CFI_PUSH(%edi); ret
+# endif
+
+# ifndef STRLEN
+# define STRLEN __strlen_sse2
+# endif
atom_text_section
-ENTRY (__strlen_sse2)
- ENTRANCE
+ENTRY (STRLEN)
mov STR(%esp), %edx
+# ifdef USE_AS_STRNLEN
+ PUSH (%edi)
+ movl LEN(%esp), %edi
+ sub $4, %edi
+ jbe L(len_less4_prolog)
+# endif
# endif
xor %eax, %eax
cmpb $0, (%edx)
jz L(exit_tail2)
cmpb $0, 3(%edx)
jz L(exit_tail3)
+
+# ifdef USE_AS_STRNLEN
+ sub $4, %edi
+ jbe L(len_less8_prolog)
+# endif
+
cmpb $0, 4(%edx)
jz L(exit_tail4)
cmpb $0, 5(%edx)
jz L(exit_tail6)
cmpb $0, 7(%edx)
jz L(exit_tail7)
+
+# ifdef USE_AS_STRNLEN
+ sub $4, %edi
+ jbe L(len_less12_prolog)
+# endif
+
cmpb $0, 8(%edx)
jz L(exit_tail8)
cmpb $0, 9(%edx)
jz L(exit_tail10)
cmpb $0, 11(%edx)
jz L(exit_tail11)
+
+# ifdef USE_AS_STRNLEN
+ sub $4, %edi
+ jbe L(len_less16_prolog)
+# endif
+
cmpb $0, 12(%edx)
jz L(exit_tail12)
cmpb $0, 13(%edx)
jz L(exit_tail14)
cmpb $0, 15(%edx)
jz L(exit_tail15)
+
pxor %xmm0, %xmm0
- mov %edx, %eax
- lea 16(%edx), %ecx
+ lea 16(%edx), %eax
+ mov %eax, %ecx
and $-16, %eax
- add $16, %eax
+
+# ifdef USE_AS_STRNLEN
+ and $15, %edx
+ add %edx, %edi
+ sub $64, %edi
+ jbe L(len_less64)
+# endif
pcmpeqb (%eax), %xmm0
pmovmskb %xmm0, %edx
lea 16(%eax), %eax
jnz L(exit)
-
pcmpeqb (%eax), %xmm2
pmovmskb %xmm2, %edx
pxor %xmm3, %xmm3
lea 16(%eax), %eax
jnz L(exit)
+# ifdef USE_AS_STRNLEN
+ sub $64, %edi
+ jbe L(len_less64)
+# endif
+
pcmpeqb (%eax), %xmm0
pmovmskb %xmm0, %edx
test %edx, %edx
lea 16(%eax), %eax
jnz L(exit)
+# ifdef USE_AS_STRNLEN
+ sub $64, %edi
+ jbe L(len_less64)
+# endif
+
pcmpeqb (%eax), %xmm0
pmovmskb %xmm0, %edx
test %edx, %edx
lea 16(%eax), %eax
jnz L(exit)
+# ifdef USE_AS_STRNLEN
+ sub $64, %edi
+ jbe L(len_less64)
+# endif
+
pcmpeqb (%eax), %xmm0
pmovmskb %xmm0, %edx
test %edx, %edx
lea 16(%eax), %eax
jnz L(exit)
+# ifdef USE_AS_STRNLEN
+ mov %eax, %edx
+ and $63, %edx
+ add %edx, %edi
+# endif
+
and $-0x40, %eax
-L(aligned_64):
+
+ .p2align 4
+L(aligned_64_loop):
+# ifdef USE_AS_STRNLEN
+ sub $64, %edi
+ jbe L(len_less64)
+# endif
movaps (%eax), %xmm0
movaps 16(%eax), %xmm1
movaps 32(%eax), %xmm2
pmovmskb %xmm2, %edx
test %edx, %edx
lea 64(%eax), %eax
- jz L(aligned_64)
+ jz L(aligned_64_loop)
pcmpeqb -64(%eax), %xmm3
pmovmskb %xmm3, %edx
sub %ecx, %eax
test %dl, %dl
jz L(exit_high)
+
+ mov %dl, %cl
+ and $15, %cl
+ jz L(exit_8)
test $0x01, %dl
jnz L(exit_tail0)
-
test $0x02, %dl
jnz L(exit_tail1)
-
test $0x04, %dl
jnz L(exit_tail2)
+ add $3, %eax
+ RETURN
- test $0x08, %dl
- jnz L(exit_tail3)
-
+ .p2align 4
+L(exit_8):
test $0x10, %dl
jnz L(exit_tail4)
-
test $0x20, %dl
jnz L(exit_tail5)
-
test $0x40, %dl
jnz L(exit_tail6)
add $7, %eax
-L(exit_tail0):
RETURN
+ .p2align 4
L(exit_high):
- add $8, %eax
+ mov %dh, %ch
+ and $15, %ch
+ jz L(exit_high_8)
test $0x01, %dh
+ jnz L(exit_tail8)
+ test $0x02, %dh
+ jnz L(exit_tail9)
+ test $0x04, %dh
+ jnz L(exit_tail10)
+ add $11, %eax
+ RETURN
+
+ .p2align 4
+L(exit_high_8):
+ test $0x10, %dh
+ jnz L(exit_tail12)
+ test $0x20, %dh
+ jnz L(exit_tail13)
+ test $0x40, %dh
+ jnz L(exit_tail14)
+ add $15, %eax
+L(exit_tail0):
+ RETURN
+
+# ifdef USE_AS_STRNLEN
+
+ .p2align 4
+L(len_less64):
+ pxor %xmm0, %xmm0
+ add $64, %edi
+
+ pcmpeqb (%eax), %xmm0
+ pmovmskb %xmm0, %edx
+ pxor %xmm1, %xmm1
+ lea 16(%eax), %eax
+ test %edx, %edx
+ jnz L(strnlen_exit)
+
+ sub $16, %edi
+ jbe L(return_start_len)
+
+ pcmpeqb (%eax), %xmm1
+ pmovmskb %xmm1, %edx
+ lea 16(%eax), %eax
+ test %edx, %edx
+ jnz L(strnlen_exit)
+
+ sub $16, %edi
+ jbe L(return_start_len)
+
+ pcmpeqb (%eax), %xmm0
+ pmovmskb %xmm0, %edx
+ lea 16(%eax), %eax
+ test %edx, %edx
+ jnz L(strnlen_exit)
+
+ sub $16, %edi
+ jbe L(return_start_len)
+
+ pcmpeqb (%eax), %xmm1
+ pmovmskb %xmm1, %edx
+ lea 16(%eax), %eax
+ test %edx, %edx
+ jnz L(strnlen_exit)
+
+ movl LEN(%esp), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit):
+ sub %ecx, %eax
+
+ test %dl, %dl
+ jz L(strnlen_exit_high)
+ mov %dl, %cl
+ and $15, %cl
+ jz L(strnlen_exit_8)
+ test $0x01, %dl
jnz L(exit_tail0)
+ test $0x02, %dl
+ jnz L(strnlen_exit_tail1)
+ test $0x04, %dl
+ jnz L(strnlen_exit_tail2)
+ sub $4, %edi
+ jb L(return_start_len)
+ lea 3(%eax), %eax
+ RETURN
- test $0x02, %dh
- jnz L(exit_tail1)
+ .p2align 4
+L(strnlen_exit_8):
+ test $0x10, %dl
+ jnz L(strnlen_exit_tail4)
+ test $0x20, %dl
+ jnz L(strnlen_exit_tail5)
+ test $0x40, %dl
+ jnz L(strnlen_exit_tail6)
+ sub $8, %edi
+ jb L(return_start_len)
+ lea 7(%eax), %eax
+ RETURN
+ .p2align 4
+L(strnlen_exit_high):
+ mov %dh, %ch
+ and $15, %ch
+ jz L(strnlen_exit_high_8)
+ test $0x01, %dh
+ jnz L(strnlen_exit_tail8)
+ test $0x02, %dh
+ jnz L(strnlen_exit_tail9)
test $0x04, %dh
- jnz L(exit_tail2)
-
- test $0x08, %dh
- jnz L(exit_tail3)
+ jnz L(strnlen_exit_tail10)
+ sub $12, %edi
+ jb L(return_start_len)
+ lea 11(%eax), %eax
+ RETURN
+ .p2align 4
+L(strnlen_exit_high_8):
test $0x10, %dh
- jnz L(exit_tail4)
-
+ jnz L(strnlen_exit_tail12)
test $0x20, %dh
- jnz L(exit_tail5)
-
+ jnz L(strnlen_exit_tail13)
test $0x40, %dh
- jnz L(exit_tail6)
- add $7, %eax
+ jnz L(strnlen_exit_tail14)
+ sub $16, %edi
+ jb L(return_start_len)
+ lea 15(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail1):
+ sub $2, %edi
+ jb L(return_start_len)
+ lea 1(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail2):
+ sub $3, %edi
+ jb L(return_start_len)
+ lea 2(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail4):
+ sub $5, %edi
+ jb L(return_start_len)
+ lea 4(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail5):
+ sub $6, %edi
+ jb L(return_start_len)
+ lea 5(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail6):
+ sub $7, %edi
+ jb L(return_start_len)
+ lea 6(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail8):
+ sub $9, %edi
+ jb L(return_start_len)
+ lea 8(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail9):
+ sub $10, %edi
+ jb L(return_start_len)
+ lea 9(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail10):
+ sub $11, %edi
+ jb L(return_start_len)
+ lea 10(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail12):
+ sub $13, %edi
+ jb L(return_start_len)
+ lea 12(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(strnlen_exit_tail13):
+ sub $14, %edi
+ jb L(return_start_len)
+ lea 13(%eax), %eax
RETURN
+ .p2align 4
+L(strnlen_exit_tail14):
+ sub $15, %edi
+ jb L(return_start_len)
+ lea 14(%eax), %eax
+ RETURN
+
+ .p2align 4
+L(return_start_len):
+ movl LEN(%esp), %eax
+ RETURN
+
+/* for prolog only */
+
+ .p2align 4
+L(len_less4_prolog):
+ xor %eax, %eax
+
+ add $4, %edi
+ jz L(exit_tail0)
+
+ cmpb $0, (%edx)
+ jz L(exit_tail0)
+ cmp $1, %edi
+ je L(exit_tail1)
+
+ cmpb $0, 1(%edx)
+ jz L(exit_tail1)
+ cmp $2, %edi
+ je L(exit_tail2)
+
+ cmpb $0, 2(%edx)
+ jz L(exit_tail2)
+ cmp $3, %edi
+ je L(exit_tail3)
+
+ cmpb $0, 3(%edx)
+ jz L(exit_tail3)
+ mov $4, %eax
+ RETURN
+
+ .p2align 4
+L(len_less8_prolog):
+ add $4, %edi
+
+ cmpb $0, 4(%edx)
+ jz L(exit_tail4)
+ cmp $1, %edi
+ je L(exit_tail5)
+
+ cmpb $0, 5(%edx)
+ jz L(exit_tail5)
+ cmp $2, %edi
+ je L(exit_tail6)
+
+ cmpb $0, 6(%edx)
+ jz L(exit_tail6)
+ cmp $3, %edi
+ je L(exit_tail7)
+
+ cmpb $0, 7(%edx)
+ jz L(exit_tail7)
+ mov $8, %eax
+ RETURN
+
+
+ .p2align 4
+L(len_less12_prolog):
+ add $4, %edi
+
+ cmpb $0, 8(%edx)
+ jz L(exit_tail8)
+ cmp $1, %edi
+ je L(exit_tail9)
+
+ cmpb $0, 9(%edx)
+ jz L(exit_tail9)
+ cmp $2, %edi
+ je L(exit_tail10)
+
+ cmpb $0, 10(%edx)
+ jz L(exit_tail10)
+ cmp $3, %edi
+ je L(exit_tail11)
+
+ cmpb $0, 11(%edx)
+ jz L(exit_tail11)
+ mov $12, %eax
+ RETURN
+
+ .p2align 4
+L(len_less16_prolog):
+ add $4, %edi
+
+ cmpb $0, 12(%edx)
+ jz L(exit_tail12)
+ cmp $1, %edi
+ je L(exit_tail13)
+
+ cmpb $0, 13(%edx)
+ jz L(exit_tail13)
+ cmp $2, %edi
+ je L(exit_tail14)
+
+ cmpb $0, 14(%edx)
+ jz L(exit_tail14)
+ cmp $3, %edi
+ je L(exit_tail15)
+
+ cmpb $0, 15(%edx)
+ jz L(exit_tail15)
+ mov $16, %eax
+ RETURN
+# endif
+
.p2align 4
L(exit_tail1):
add $1, %eax
L(exit_tail15):
add $15, %eax
# ifndef USE_AS_STRCAT
- ret
-END (__strlen_sse2)
+ RETURN
+END (STRLEN)
# endif
#endif
--- /dev/null
+#ifndef NOT_IN_libc
+# define STRNLEN __strnlen_ia32
+# undef libc_hidden_builtin_def
+# define libc_hidden_def(name) \
+ __hidden_ver1 (__strnlen_ia32, __GI_strnlen, __strnlen_ia32);
+#endif
+
+#include "string/strnlen.c"
--- /dev/null
+#define USE_AS_STRNLEN
+#define STRLEN __strnlen_sse2
+#include "strlen-sse2.S"
--- /dev/null
+/* Multiple versions of strnlen
+ 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>
+
+#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(__strnlen)
+ .type __strnlen, @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 __strnlen_ia32@GOTOFF(%ebx), %eax
+ testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
+ jz 2f
+ leal __strnlen_sse2@GOTOFF(%ebx), %eax
+2: popl %ebx
+ cfi_adjust_cfa_offset (-4);
+ cfi_restore (ebx)
+ ret
+END(__strnlen)
+
+weak_alias(__strnlen, strnlen)
+#endif
--- /dev/null
+#ifndef NOT_IN_libc
+# define WCSLEN __wcslen_ia32
+#endif
+
+#include "wcsmbs/wcslen.c"
--- /dev/null
+/* wcslen with SSE2
+ 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. */
+
+#ifndef NOT_IN_libc
+# include <sysdep.h>
+# define STR 4
+
+ .text
+ENTRY (__wcslen_sse2)
+ mov STR(%esp), %edx
+
+ cmp $0, (%edx)
+ jz L(exit_tail0)
+ cmp $0, 4(%edx)
+ jz L(exit_tail1)
+ cmp $0, 8(%edx)
+ jz L(exit_tail2)
+ cmp $0, 12(%edx)
+ jz L(exit_tail3)
+ cmp $0, 16(%edx)
+ jz L(exit_tail4)
+ cmp $0, 20(%edx)
+ jz L(exit_tail5)
+ cmp $0, 24(%edx)
+ jz L(exit_tail6)
+ cmp $0, 28(%edx)
+ jz L(exit_tail7)
+
+ pxor %xmm0, %xmm0
+
+ lea 32(%edx), %eax
+ lea 16(%edx), %ecx
+ and $-16, %eax
+
+ pcmpeqd (%eax), %xmm0
+ pmovmskb %xmm0, %edx
+ pxor %xmm1, %xmm1
+ test %edx, %edx
+ lea 16(%eax), %eax
+ jnz L(exit)
+
+ pcmpeqd (%eax), %xmm1
+ pmovmskb %xmm1, %edx
+ pxor %xmm2, %xmm2
+ test %edx, %edx
+ lea 16(%eax), %eax
+ jnz L(exit)
+
+ pcmpeqd (%eax), %xmm2
+ pmovmskb %xmm2, %edx
+ pxor %xmm3, %xmm3
+ test %edx, %edx
+ lea 16(%eax), %eax
+ jnz L(exit)
+
+ pcmpeqd (%eax), %xmm3
+ pmovmskb %xmm3, %edx
+ test %edx, %edx
+ lea 16(%eax), %eax
+ jnz L(exit)
+
+ and $-0x40, %eax
+
+ .p2align 4
+L(aligned_64_loop):
+ movaps (%eax), %xmm0
+ movaps 16(%eax), %xmm1
+ movaps 32(%eax), %xmm2
+ movaps 48(%eax), %xmm6
+
+ pminub %xmm1, %xmm0
+ pminub %xmm6, %xmm2
+ pminub %xmm0, %xmm2
+ pcmpeqd %xmm3, %xmm2
+ pmovmskb %xmm2, %edx
+ test %edx, %edx
+ lea 64(%eax), %eax
+ jz L(aligned_64_loop)
+
+ pcmpeqd -64(%eax), %xmm3
+ pmovmskb %xmm3, %edx
+ test %edx, %edx
+ lea 48(%ecx), %ecx
+ jnz L(exit)
+
+ pcmpeqd %xmm1, %xmm3
+ pmovmskb %xmm3, %edx
+ test %edx, %edx
+ lea -16(%ecx), %ecx
+ jnz L(exit)
+
+ pcmpeqd -32(%eax), %xmm3
+ pmovmskb %xmm3, %edx
+ test %edx, %edx
+ lea -16(%ecx), %ecx
+ jnz L(exit)
+
+ pcmpeqd %xmm6, %xmm3
+ pmovmskb %xmm3, %edx
+ test %edx, %edx
+ lea -16(%ecx), %ecx
+ jnz L(exit)
+
+ jmp L(aligned_64_loop)
+
+ .p2align 4
+L(exit):
+ sub %ecx, %eax
+ shr $2, %eax
+ test %dl, %dl
+ jz L(exit_high)
+
+ mov %dl, %cl
+ and $15, %cl
+ jz L(exit_1)
+ ret
+
+ .p2align 4
+L(exit_high):
+ mov %dh, %ch
+ and $15, %ch
+ jz L(exit_3)
+ add $2, %eax
+ ret
+
+ .p2align 4
+L(exit_1):
+ add $1, %eax
+ ret
+
+ .p2align 4
+L(exit_3):
+ add $3, %eax
+ ret
+
+ .p2align 4
+L(exit_tail0):
+ xor %eax, %eax
+ ret
+
+ .p2align 4
+L(exit_tail1):
+ mov $1, %eax
+ ret
+
+ .p2align 4
+L(exit_tail2):
+ mov $2, %eax
+ ret
+
+ .p2align 4
+L(exit_tail3):
+ mov $3, %eax
+ ret
+
+ .p2align 4
+L(exit_tail4):
+ mov $4, %eax
+ ret
+
+ .p2align 4
+L(exit_tail5):
+ mov $5, %eax
+ ret
+
+ .p2align 4
+L(exit_tail6):
+ mov $6, %eax
+ ret
+
+ .p2align 4
+L(exit_tail7):
+ mov $7, %eax
+ ret
+
+END (__wcslen_sse2)
+#endif
--- /dev/null
+/* Multiple versions of wcslen
+ 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>
+
+#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(__wcslen)
+ .type __wcslen, @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 __wcslen_ia32@GOTOFF(%ebx), %eax
+ testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
+ jz 2f
+ leal __wcslen_sse2@GOTOFF(%ebx), %eax
+2: popl %ebx
+ cfi_adjust_cfa_offset (-4);
+ cfi_restore (ebx)
+ ret
+END(__wcslen)
+
+weak_alias(__wcslen, wcslen)
+#endif
-/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 1998, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
#include <wchar.h>
-
/* Return length of string S. */
+#ifndef WCSLEN
+# define WCSLEN __wcslen
+#endif
+
size_t
-__wcslen (s)
+WCSLEN (s)
const wchar_t *s;
{
size_t len = 0;
return len;
}
+#ifndef WCSLEN
weak_alias (__wcslen, wcslen)
+#endif
projects / thirdparty / glibc.git / commitdiff
