diff options
Diffstat (limited to 'sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S')
| -rw-r--r-- | sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S b/sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S deleted file mode 100644 index d3ea864bab..0000000000 --- a/sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S +++ /dev/null @@ -1,125 +0,0 @@ -/* strlen with SSE2 and BSF - Copyright (C) 2010-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#if defined SHARED && IS_IN (libc) - -#include <sysdep.h> - -#define CFI_PUSH(REG) \ - cfi_adjust_cfa_offset (4); \ - cfi_rel_offset (REG, 0) - -#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 + 8 /* Preserve ESI and EDI. */ -#define STR PARMS -#define ENTRANCE PUSH (%esi); PUSH (%edi); cfi_remember_state -#define RETURN POP (%edi); POP (%esi); ret; \ - cfi_restore_state; cfi_remember_state - - .text -ENTRY ( __strlen_sse2_bsf) - ENTRANCE - mov STR(%esp), %edi - xor %eax, %eax - mov %edi, %ecx - and $0x3f, %ecx - pxor %xmm0, %xmm0 - cmp $0x30, %ecx - ja L(next) - movdqu (%edi), %xmm1 - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm0, %edx - test %edx, %edx - jnz L(exit_less16) - mov %edi, %eax - and $-16, %eax - jmp L(align16_start) -L(next): - - mov %edi, %eax - and $-16, %eax - pcmpeqb (%eax), %xmm0 - mov $-1, %esi - sub %eax, %ecx - shl %cl, %esi - pmovmskb %xmm0, %edx - and %esi, %edx - jnz L(exit) -L(align16_start): - pxor %xmm0, %xmm0 - pxor %xmm1, %xmm1 - pxor %xmm2, %xmm2 - pxor %xmm3, %xmm3 - .p2align 4 -L(align16_loop): - pcmpeqb 16(%eax), %xmm0 - pmovmskb %xmm0, %edx - test %edx, %edx - jnz L(exit16) - - pcmpeqb 32(%eax), %xmm1 - pmovmskb %xmm1, %edx - test %edx, %edx - jnz L(exit32) - - pcmpeqb 48(%eax), %xmm2 - pmovmskb %xmm2, %edx - test %edx, %edx - jnz L(exit48) - - pcmpeqb 64(%eax), %xmm3 - pmovmskb %xmm3, %edx - lea 64(%eax), %eax - test %edx, %edx - jz L(align16_loop) -L(exit): - sub %edi, %eax -L(exit_less16): - bsf %edx, %edx - add %edx, %eax - RETURN -L(exit16): - sub %edi, %eax - bsf %edx, %edx - add %edx, %eax - add $16, %eax - RETURN -L(exit32): - sub %edi, %eax - bsf %edx, %edx - add %edx, %eax - add $32, %eax - RETURN -L(exit48): - sub %edi, %eax - bsf %edx, %edx - add %edx, %eax - add $48, %eax - POP (%edi) - POP (%esi) - ret - -END ( __strlen_sse2_bsf) - -#endif |