1 /* strlen SSE2 without bsf
2 Copyright (C) 2010, 2011 Free Software Foundation, Inc.
3 Contributed by Intel Corporation.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #if (defined SHARED || defined USE_AS_STRCAT) && !defined NOT_IN_libc
23 # ifndef USE_AS_STRCAT
29 .section .text.sse2,"ax",@progbits
30 ENTRY (__strlen_no_bsf)
100 pcmpeqb (%rax), %xmm0
106 pcmpeqb (%rax), %xmm1
112 pcmpeqb (%rax), %xmm2
118 pcmpeqb (%rax), %xmm3
124 pcmpeqb (%rax), %xmm0
130 pcmpeqb (%rax), %xmm1
136 pcmpeqb (%rax), %xmm2
142 pcmpeqb (%rax), %xmm3
148 pcmpeqb (%rax), %xmm0
154 pcmpeqb (%rax), %xmm1
160 pcmpeqb (%rax), %xmm2
166 pcmpeqb (%rax), %xmm3
174 pcmpeqb (%rax), %xmm0
175 pcmpeqb 16(%rax), %xmm1
176 pcmpeqb 32(%rax), %xmm2
177 pcmpeqb 48(%rax), %xmm3
179 pmovmskb %xmm1, %r11d
180 pmovmskb %xmm2, %r10d
189 jnz L(aligned_64_exit_16)
191 jnz L(aligned_64_exit_32)
193 jnz L(aligned_64_exit_48)
194 L(aligned_64_exit_64):
196 jmp L(aligned_64_exit)
197 L(aligned_64_exit_48):
200 jmp L(aligned_64_exit)
201 L(aligned_64_exit_32):
204 jmp L(aligned_64_exit)
205 L(aligned_64_exit_16):
309 # ifndef USE_AS_STRCAT
311 END (__strlen_no_bsf)