diff options
Diffstat (limited to 'sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S')
| -rw-r--r-- | sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S | 282 |
1 files changed, 0 insertions, 282 deletions
diff --git a/sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S b/sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S deleted file mode 100644 index 39a7c8825b..0000000000 --- a/sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S +++ /dev/null @@ -1,282 +0,0 @@ -/* strrchr with SSE2 with bsf and bsr - Copyright (C) 2011-2017 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 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 -# define STR1 PARMS -# define STR2 STR1+4 - - .text -ENTRY (__strrchr_sse2_bsf) - - mov STR1(%esp), %ecx - movd STR2(%esp), %xmm1 - - PUSH (%edi) - pxor %xmm2, %xmm2 - mov %ecx, %edi - punpcklbw %xmm1, %xmm1 - punpcklbw %xmm1, %xmm1 - /* ECX has OFFSET. */ - and $63, %ecx - cmp $48, %ecx - pshufd $0, %xmm1, %xmm1 - ja L(crosscashe) - -/* unaligned string. */ - movdqu (%edi), %xmm0 - pcmpeqb %xmm0, %xmm2 - pcmpeqb %xmm1, %xmm0 - /* Find where NULL is. */ - pmovmskb %xmm2, %edx - /* Check if there is a match. */ - pmovmskb %xmm0, %eax - - test %eax, %eax - jnz L(unaligned_match1) - - test %edx, %edx - jnz L(return_null) - - and $-16, %edi - add $16, %edi - - PUSH (%esi) - PUSH (%ebx) - - xor %ebx, %ebx - jmp L(loop) - - CFI_POP (%esi) - CFI_POP (%ebx) - - .p2align 4 -L(unaligned_return_value1): - bsf %edx, %ecx - mov $2, %edx - shl %cl, %edx - sub $1, %edx - and %edx, %eax - jz L(return_null) - bsr %eax, %eax - add %edi, %eax - POP (%edi) - ret - CFI_PUSH (%edi) - - .p2align 4 -L(unaligned_match1): - test %edx, %edx - jnz L(unaligned_return_value1) - - PUSH (%esi) - PUSH (%ebx) - - mov %eax, %ebx - lea 16(%edi), %esi - and $-16, %edi - add $16, %edi - jmp L(loop) - - CFI_POP (%esi) - CFI_POP (%ebx) - - .p2align 4 - L(crosscashe): -/* Hancle unaligned string. */ - and $15, %ecx - and $-16, %edi - pxor %xmm3, %xmm3 - movdqa (%edi), %xmm0 - pcmpeqb %xmm0, %xmm3 - pcmpeqb %xmm1, %xmm0 - /* Find where NULL is. */ - pmovmskb %xmm3, %edx - /* Check if there is a match. */ - pmovmskb %xmm0, %eax - /* Remove the leading bytes. */ - shr %cl, %edx - shr %cl, %eax - - test %eax, %eax - jnz L(unaligned_match) - - test %edx, %edx - jnz L(return_null) - - add $16, %edi - - PUSH (%esi) - PUSH (%ebx) - - xor %ebx, %ebx - jmp L(loop) - - CFI_POP (%esi) - CFI_POP (%ebx) - - .p2align 4 -L(unaligned_return_value): - add %ecx, %edi - bsf %edx, %ecx - mov $2, %edx - shl %cl, %edx - sub $1, %edx - and %edx, %eax - jz L(return_null) - bsr %eax, %eax - add %edi, %eax - POP (%edi) - ret - CFI_PUSH (%edi) - - .p2align 4 -L(unaligned_match): - test %edx, %edx - jnz L(unaligned_return_value) - - PUSH (%esi) - PUSH (%ebx) - - mov %eax, %ebx - add $16, %edi - lea (%edi, %ecx), %esi - -/* Loop start on aligned string. */ - .p2align 4 -L(loop): - movdqa (%edi), %xmm0 - pcmpeqb %xmm0, %xmm2 - add $16, %edi - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm2, %ecx - pmovmskb %xmm0, %eax - or %eax, %ecx - jnz L(matches) - - movdqa (%edi), %xmm0 - pcmpeqb %xmm0, %xmm2 - add $16, %edi - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm2, %ecx - pmovmskb %xmm0, %eax - or %eax, %ecx - jnz L(matches) - - movdqa (%edi), %xmm0 - pcmpeqb %xmm0, %xmm2 - add $16, %edi - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm2, %ecx - pmovmskb %xmm0, %eax - or %eax, %ecx - jnz L(matches) - - movdqa (%edi), %xmm0 - pcmpeqb %xmm0, %xmm2 - add $16, %edi - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm2, %ecx - pmovmskb %xmm0, %eax - or %eax, %ecx - jz L(loop) - -L(matches): - test %eax, %eax - jnz L(match) -L(return_value): - test %ebx, %ebx - jz L(return_null_1) - bsr %ebx, %eax - add %esi, %eax - - POP (%ebx) - POP (%esi) - - sub $16, %eax - POP (%edi) - ret - - CFI_PUSH (%edi) - CFI_PUSH (%ebx) - CFI_PUSH (%esi) - - .p2align 4 -L(match): - pmovmskb %xmm2, %ecx - test %ecx, %ecx - jnz L(return_value_1) - mov %eax, %ebx - mov %edi, %esi - jmp L(loop) - - .p2align 4 -L(return_value_1): - bsf %ecx, %ecx - mov $2, %edx - shl %cl, %edx - sub $1, %edx - and %edx, %eax - jz L(return_value) - - POP (%ebx) - POP (%esi) - - bsr %eax, %eax - add %edi, %eax - sub $16, %eax - POP (%edi) - ret - - CFI_PUSH (%edi) -/* Return NULL. */ - .p2align 4 -L(return_null): - xor %eax, %eax - POP (%edi) - ret - - CFI_PUSH (%edi) - CFI_PUSH (%ebx) - CFI_PUSH (%esi) -/* Return NULL. */ - .p2align 4 -L(return_null_1): - POP (%ebx) - POP (%esi) - POP (%edi) - xor %eax, %eax - ret - -END (__strrchr_sse2_bsf) -#endif |