/* wcscmp with SSE2
Copyright (C) 2011-2023 Free Software Foundation, Inc.
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
. */
#if IS_IN (libc)
# include
# 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
/* Note: wcscmp uses signed comparison, not unsugned as in strcmp function. */
.text
ENTRY (__wcscmp_sse2)
/*
* 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_sse2)
#endif