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3b5bca823dc9becb77a3cdb79aaeec148007c57d
bionic/libc/arch-x86/string/sse2-wcscmp-atom.S
Liubov Dmitrieva 0a490665a3 bionic/x86: Optimization for string routines 
Optimized strcpy, strcat,
strncpy, strncat, strlcpy, strlcat,
memchr, memrchr, strchr, strrchr, index,
strnlen, strlen, wcslen, wmemcmp, wcscmp,
wcschr, wcsrchr, wcscpy, wcscat

Change-Id: I82b29132edf9a2e144e0bb3ee4ff5217df8d2a6d
Signed-off-by: Liubov Dmitrieva <liubov.dmitrieva@intel.com>
2013-05-31 13:37:03 +04:00

1063 lines
25 KiB
ArmAsm
Raw Blame History

/*
Copyright (c) 2011 Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef L
# define L(label) .L##label
#endif
#ifndef cfi_startproc
# define cfi_startproc .cfi_startproc
#endif
#ifndef cfi_endproc
# define cfi_endproc .cfi_endproc
#endif
#ifndef cfi_rel_offset
# define cfi_rel_offset(reg, off) .cfi_rel_offset reg, off
#endif
#ifndef cfi_restore
# define cfi_restore(reg) .cfi_restore reg
#endif
#ifndef cfi_adjust_cfa_offset
# define cfi_adjust_cfa_offset(off) .cfi_adjust_cfa_offset off
#endif
#ifndef ENTRY
# define ENTRY(name) \
.type name, @function; \
.globl name; \
.p2align 4; \
name: \
cfi_startproc
#endif
#ifndef END
# define END(name) \
cfi_endproc; \
.size name, .-name
#endif
#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 ENTRANCE PUSH(%esi); PUSH(%edi)
#define RETURN POP(%edi); POP(%esi); ret; CFI_PUSH(%esi); CFI_PUSH(%edi);
#define PARMS 4
#define STR1 PARMS
#define STR2 STR1+4
.text
ENTRY (wcscmp)
/*
* This implementation uses SSE to compare up to 16 bytes at a time.
*/
mov STR1(%esp), %edx
mov STR2(%esp), %eax
mov (%eax), %ecx
cmp %ecx, (%edx)
jne L(neq)
test %ecx, %ecx
jz L(eq)
mov 4(%eax), %ecx
cmp %ecx, 4(%edx)
jne L(neq)
test %ecx, %ecx
jz L(eq)
mov 8(%eax), %ecx
cmp %ecx, 8(%edx)
jne L(neq)
test %ecx, %ecx
jz L(eq)
mov 12(%eax), %ecx
cmp %ecx, 12(%edx)
jne L(neq)
test %ecx, %ecx
jz L(eq)
ENTRANCE
add $16, %eax
add $16, %edx
mov %eax, %esi
mov %edx, %edi
pxor %xmm0, %xmm0 /* clear %xmm0 for null char checks */
mov %al, %ch
mov %dl, %cl
and $63, %eax /* esi alignment in cache line */
and $63, %edx /* edi alignment in cache line */
and $15, %cl
jz L(continue_00)
cmp $16, %edx
jb L(continue_0)
cmp $32, %edx
jb L(continue_16)
cmp $48, %edx
jb L(continue_32)
L(continue_48):
and $15, %ch
jz L(continue_48_00)
cmp $16, %eax
jb L(continue_0_48)
cmp $32, %eax
jb L(continue_16_48)
cmp $48, %eax
jb L(continue_32_48)
.p2align 4
L(continue_48_48):
mov (%esi), %ecx
cmp %ecx, (%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 4(%esi), %ecx
cmp %ecx, 4(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 8(%esi), %ecx
cmp %ecx, 8(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 12(%esi), %ecx
cmp %ecx, 12(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
movdqu 16(%edi), %xmm1
movdqu 16(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqu 32(%edi), %xmm1
movdqu 32(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
movdqu 48(%edi), %xmm1
movdqu 48(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_48)
add $64, %esi
add $64, %edi
jmp L(continue_48_48)
L(continue_0):
and $15, %ch
jz L(continue_0_00)
cmp $16, %eax
jb L(continue_0_0)
cmp $32, %eax
jb L(continue_0_16)
cmp $48, %eax
jb L(continue_0_32)
.p2align 4
L(continue_0_48):
mov (%esi), %ecx
cmp %ecx, (%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 4(%esi), %ecx
cmp %ecx, 4(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 8(%esi), %ecx
cmp %ecx, 8(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 12(%esi), %ecx
cmp %ecx, 12(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
movdqu 16(%edi), %xmm1
movdqu 16(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqu 32(%edi), %xmm1
movdqu 32(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
mov 48(%esi), %ecx
cmp %ecx, 48(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 52(%esi), %ecx
cmp %ecx, 52(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 56(%esi), %ecx
cmp %ecx, 56(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 60(%esi), %ecx
cmp %ecx, 60(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
add $64, %esi
add $64, %edi
jmp L(continue_0_48)
.p2align 4
L(continue_00):
and $15, %ch
jz L(continue_00_00)
cmp $16, %eax
jb L(continue_00_0)
cmp $32, %eax
jb L(continue_00_16)
cmp $48, %eax
jb L(continue_00_32)
.p2align 4
L(continue_00_48):
pcmpeqd (%edi), %xmm0
mov (%edi), %eax
pmovmskb %xmm0, %ecx
test %ecx, %ecx
jnz L(less4_double_words1)
cmp (%esi), %eax
jne L(nequal)
mov 4(%edi), %eax
cmp 4(%esi), %eax
jne L(nequal)
mov 8(%edi), %eax
cmp 8(%esi), %eax
jne L(nequal)
mov 12(%edi), %eax
cmp 12(%esi), %eax
jne L(nequal)
movdqu 16(%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd 16(%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqu 32(%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd 32(%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
movdqu 48(%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd 48(%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_48)
add $64, %esi
add $64, %edi
jmp L(continue_00_48)
.p2align 4
L(continue_32):
and $15, %ch
jz L(continue_32_00)
cmp $16, %eax
jb L(continue_0_32)
cmp $32, %eax
jb L(continue_16_32)
cmp $48, %eax
jb L(continue_32_32)
.p2align 4
L(continue_32_48):
mov (%esi), %ecx
cmp %ecx, (%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 4(%esi), %ecx
cmp %ecx, 4(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 8(%esi), %ecx
cmp %ecx, 8(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 12(%esi), %ecx
cmp %ecx, 12(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 16(%esi), %ecx
cmp %ecx, 16(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 20(%esi), %ecx
cmp %ecx, 20(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 24(%esi), %ecx
cmp %ecx, 24(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 28(%esi), %ecx
cmp %ecx, 28(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
movdqu 32(%edi), %xmm1
movdqu 32(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
movdqu 48(%edi), %xmm1
movdqu 48(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_48)
add $64, %esi
add $64, %edi
jmp L(continue_32_48)
.p2align 4
L(continue_16):
and $15, %ch
jz L(continue_16_00)
cmp $16, %eax
jb L(continue_0_16)
cmp $32, %eax
jb L(continue_16_16)
cmp $48, %eax
jb L(continue_16_32)
.p2align 4
L(continue_16_48):
mov (%esi), %ecx
cmp %ecx, (%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 4(%esi), %ecx
cmp %ecx, 4(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 8(%esi), %ecx
cmp %ecx, 8(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 12(%esi), %ecx
cmp %ecx, 12(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
movdqu 16(%edi), %xmm1
movdqu 16(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
mov 32(%esi), %ecx
cmp %ecx, 32(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 36(%esi), %ecx
cmp %ecx, 36(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 40(%esi), %ecx
cmp %ecx, 40(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 44(%esi), %ecx
cmp %ecx, 44(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
movdqu 48(%edi), %xmm1
movdqu 48(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_48)
add $64, %esi
add $64, %edi
jmp L(continue_16_48)
.p2align 4
L(continue_00_00):
movdqa (%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd (%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqa 16(%edi), %xmm3
pcmpeqd %xmm3, %xmm0 /* Any null double_word? */
pcmpeqd 16(%esi), %xmm3 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm3 /* packed sub of comparison results*/
pmovmskb %xmm3, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqa 32(%edi), %xmm5
pcmpeqd %xmm5, %xmm0 /* Any null double_word? */
pcmpeqd 32(%esi), %xmm5 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm5 /* packed sub of comparison results*/
pmovmskb %xmm5, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
movdqa 48(%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd 48(%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_48)
add $64, %esi
add $64, %edi
jmp L(continue_00_00)
.p2align 4
L(continue_00_32):
movdqu (%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd (%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
add $16, %esi
add $16, %edi
jmp L(continue_00_48)
.p2align 4
L(continue_00_16):
movdqu (%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd (%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqu 16(%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd 16(%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
add $32, %esi
add $32, %edi
jmp L(continue_00_48)
.p2align 4
L(continue_00_0):
movdqu (%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd (%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqu 16(%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd 16(%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqu 32(%esi), %xmm2
pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
pcmpeqd 32(%edi), %xmm2 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm2 /* packed sub of comparison results*/
pmovmskb %xmm2, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
add $48, %esi
add $48, %edi
jmp L(continue_00_48)
.p2align 4
L(continue_48_00):
pcmpeqd (%esi), %xmm0
mov (%edi), %eax
pmovmskb %xmm0, %ecx
test %ecx, %ecx
jnz L(less4_double_words1)
cmp (%esi), %eax
jne L(nequal)
mov 4(%edi), %eax
cmp 4(%esi), %eax
jne L(nequal)
mov 8(%edi), %eax
cmp 8(%esi), %eax
jne L(nequal)
mov 12(%edi), %eax
cmp 12(%esi), %eax
jne L(nequal)
movdqu 16(%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd 16(%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqu 32(%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd 32(%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
movdqu 48(%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd 48(%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_48)
add $64, %esi
add $64, %edi
jmp L(continue_48_00)
.p2align 4
L(continue_32_00):
movdqu (%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd (%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
add $16, %esi
add $16, %edi
jmp L(continue_48_00)
.p2align 4
L(continue_16_00):
movdqu (%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd (%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqu 16(%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd 16(%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
add $32, %esi
add $32, %edi
jmp L(continue_48_00)
.p2align 4
L(continue_0_00):
movdqu (%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd (%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqu 16(%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd 16(%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqu 32(%edi), %xmm1
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd 32(%esi), %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
add $48, %esi
add $48, %edi
jmp L(continue_48_00)
.p2align 4
L(continue_32_32):
movdqu (%edi), %xmm1
movdqu (%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
add $16, %esi
add $16, %edi
jmp L(continue_48_48)
.p2align 4
L(continue_16_16):
movdqu (%edi), %xmm1
movdqu (%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqu 16(%edi), %xmm3
movdqu 16(%esi), %xmm4
pcmpeqd %xmm3, %xmm0 /* Any null double_word? */
pcmpeqd %xmm4, %xmm3 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm3 /* packed sub of comparison results*/
pmovmskb %xmm3, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
add $32, %esi
add $32, %edi
jmp L(continue_48_48)
.p2align 4
L(continue_0_0):
movdqu (%edi), %xmm1
movdqu (%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqu 16(%edi), %xmm3
movdqu 16(%esi), %xmm4
pcmpeqd %xmm3, %xmm0 /* Any null double_word? */
pcmpeqd %xmm4, %xmm3 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm3 /* packed sub of comparison results*/
pmovmskb %xmm3, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
movdqu 32(%edi), %xmm1
movdqu 32(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_32)
add $48, %esi
add $48, %edi
jmp L(continue_48_48)
.p2align 4
L(continue_0_16):
movdqu (%edi), %xmm1
movdqu (%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
movdqu 16(%edi), %xmm1
movdqu 16(%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words_16)
add $32, %esi
add $32, %edi
jmp L(continue_32_48)
.p2align 4
L(continue_0_32):
movdqu (%edi), %xmm1
movdqu (%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
add $16, %esi
add $16, %edi
jmp L(continue_16_48)
.p2align 4
L(continue_16_32):
movdqu (%edi), %xmm1
movdqu (%esi), %xmm2
pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
pcmpeqd %xmm2, %xmm1 /* compare first 4 double_words for equality */
psubb %xmm0, %xmm1 /* packed sub of comparison results*/
pmovmskb %xmm1, %edx
sub $0xffff, %edx /* if first 4 double_words are same, edx == 0xffff */
jnz L(less4_double_words)
add $16, %esi
add $16, %edi
jmp L(continue_32_48)
.p2align 4
L(less4_double_words1):
cmp (%esi), %eax
jne L(nequal)
test %eax, %eax
jz L(equal)
mov 4(%esi), %ecx
cmp %ecx, 4(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 8(%esi), %ecx
cmp %ecx, 8(%edi)
jne L(nequal)
test %ecx, %ecx
jz L(equal)
mov 12(%esi), %ecx
cmp %ecx, 12(%edi)
jne L(nequal)
xor %eax, %eax
RETURN
.p2align 4
L(less4_double_words):
xor %eax, %eax
test %dl, %dl
jz L(next_two_double_words)
and $15, %dl
jz L(second_double_word)
mov (%esi), %ecx
cmp %ecx, (%edi)
jne L(nequal)
RETURN
.p2align 4
L(second_double_word):
mov 4(%esi), %ecx
cmp %ecx, 4(%edi)
jne L(nequal)
RETURN
.p2align 4
L(next_two_double_words):
and $15, %dh
jz L(fourth_double_word)
mov 8(%esi), %ecx
cmp %ecx, 8(%edi)
jne L(nequal)
RETURN
.p2align 4
L(fourth_double_word):
mov 12(%esi), %ecx
cmp %ecx, 12(%edi)
jne L(nequal)
RETURN
.p2align 4
L(less4_double_words_16):
xor %eax, %eax
test %dl, %dl
jz L(next_two_double_words_16)
and $15, %dl
jz L(second_double_word_16)
mov 16(%esi), %ecx
cmp %ecx, 16(%edi)
jne L(nequal)
RETURN
.p2align 4
L(second_double_word_16):
mov 20(%esi), %ecx
cmp %ecx, 20(%edi)
jne L(nequal)
RETURN
.p2align 4
L(next_two_double_words_16):
and $15, %dh
jz L(fourth_double_word_16)
mov 24(%esi), %ecx
cmp %ecx, 24(%edi)
jne L(nequal)
RETURN
.p2align 4
L(fourth_double_word_16):
mov 28(%esi), %ecx
cmp %ecx, 28(%edi)
jne L(nequal)
RETURN
.p2align 4
L(less4_double_words_32):
xor %eax, %eax
test %dl, %dl
jz L(next_two_double_words_32)
and $15, %dl
jz L(second_double_word_32)
mov 32(%esi), %ecx
cmp %ecx, 32(%edi)
jne L(nequal)
RETURN
.p2align 4
L(second_double_word_32):
mov 36(%esi), %ecx
cmp %ecx, 36(%edi)
jne L(nequal)
RETURN
.p2align 4
L(next_two_double_words_32):
and $15, %dh
jz L(fourth_double_word_32)
mov 40(%esi), %ecx
cmp %ecx, 40(%edi)
jne L(nequal)
RETURN
.p2align 4
L(fourth_double_word_32):
mov 44(%esi), %ecx
cmp %ecx, 44(%edi)
jne L(nequal)
RETURN
.p2align 4
L(less4_double_words_48):
xor %eax, %eax
test %dl, %dl
jz L(next_two_double_words_48)
and $15, %dl
jz L(second_double_word_48)
mov 48(%esi), %ecx
cmp %ecx, 48(%edi)
jne L(nequal)
RETURN
.p2align 4
L(second_double_word_48):
mov 52(%esi), %ecx
cmp %ecx, 52(%edi)
jne L(nequal)
RETURN
.p2align 4
L(next_two_double_words_48):
and $15, %dh
jz L(fourth_double_word_48)
mov 56(%esi), %ecx
cmp %ecx, 56(%edi)
jne L(nequal)
RETURN
.p2align 4
L(fourth_double_word_48):
mov 60(%esi), %ecx
cmp %ecx, 60(%edi)
jne L(nequal)
RETURN
.p2align 4
L(nequal):
mov $1, %eax
jg L(return)
neg %eax
RETURN
.p2align 4
L(return):
RETURN
.p2align 4
L(equal):
xorl %eax, %eax
RETURN
CFI_POP (%edi)
CFI_POP (%esi)
.p2align 4
L(neq):
mov $1, %eax
jg L(neq_bigger)
neg %eax
L(neq_bigger):
ret
.p2align 4
L(eq):
xorl %eax, %eax
ret
END (wcscmp)
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