--- /dev/null
+/* wcscmp with SSE2
+ Copyright (C) 2011 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef NOT_IN_libc
+
+# include <sysdep.h>
+# include "asm-syntax.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)
+
+# ifndef STRCMP
+# define STRCMP __wcscmp_sse2
+# endif
+
+# 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 (STRCMP)
+/*
+ * 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)
+
+ sub (%esi), %eax
+ jnz L(return)
+
+ mov 4(%edi), %eax
+ sub 4(%esi), %eax
+ jnz L(return)
+
+ mov 8(%edi), %eax
+ sub 8(%esi), %eax
+ jnz L(return)
+
+ mov 12(%edi), %eax
+ sub 12(%esi), %eax
+ jnz L(return)
+
+ 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)
+
+ sub (%esi), %eax
+ jnz L(return)
+
+ mov 4(%edi), %eax
+ sub 4(%esi), %eax
+ jnz L(return)
+
+ mov 8(%edi), %eax
+ sub 8(%esi), %eax
+ jnz L(return)
+
+ mov 12(%edi), %eax
+ sub 12(%esi), %eax
+ jnz L(return)
+
+ 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), %edx
+ mov 12(%edi), %eax
+ sub %edx, %eax
+ RETURN
+
+ .p2align 4
+L(less4_double_words):
+ test %dl, %dl
+ jz L(next_two_double_words)
+ and $15, %dl
+ jz L(second_double_word)
+ mov (%edi), %eax
+ sub (%esi), %eax
+ RETURN
+
+ .p2align 4
+L(second_double_word):
+ mov 4(%edi), %eax
+ sub 4(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(next_two_double_words):
+ and $15, %dh
+ jz L(fourth_double_word)
+ mov 8(%edi), %eax
+ sub 8(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(fourth_double_word):
+ mov 12(%edi), %eax
+ sub 12(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(less4_double_words_16):
+ test %dl, %dl
+ jz L(next_two_double_words_16)
+ and $15, %dl
+ jz L(second_double_word_16)
+ mov 16(%edi), %eax
+ sub 16(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(second_double_word_16):
+ mov 20(%edi), %eax
+ sub 20(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(next_two_double_words_16):
+ and $15, %dh
+ jz L(fourth_double_word_16)
+ mov 24(%edi), %eax
+ sub 24(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(fourth_double_word_16):
+ mov 28(%edi), %eax
+ sub 28(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(less4_double_words_32):
+ test %dl, %dl
+ jz L(next_two_double_words_32)
+ and $15, %dl
+ jz L(second_double_word_32)
+ mov 32(%edi), %eax
+ sub 32(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(second_double_word_32):
+ mov 36(%edi), %eax
+ sub 36(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(next_two_double_words_32):
+ and $15, %dh
+ jz L(fourth_double_word_32)
+ mov 40(%edi), %eax
+ sub 40(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(fourth_double_word_32):
+ mov 44(%edi), %eax
+ sub 44(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(less4_double_words_48):
+ test %dl, %dl
+ jz L(next_two_double_words_48)
+ and $15, %dl
+ jz L(second_double_word_48)
+ mov 48(%edi), %eax
+ sub 48(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(second_double_word_48):
+ mov 52(%edi), %eax
+ sub 52(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(next_two_double_words_48):
+ and $15, %dh
+ jz L(fourth_double_word_48)
+ mov 56(%edi), %eax
+ sub 56(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(fourth_double_word_48):
+ mov 60(%edi), %eax
+ sub 60(%esi), %eax
+ RETURN
+
+ .p2align 4
+L(return):
+ RETURN
+
+ .p2align 4
+L(nequal):
+ mov $1, %eax
+ ja L(nequal_bigger)
+ neg %eax
+
+L(nequal_bigger):
+ RETURN
+
+ .p2align 4
+L(equal):
+ xorl %eax, %eax
+ RETURN
+
+ CFI_POP (%edi)
+ CFI_POP (%esi)
+
+ .p2align 4
+L(neq):
+ mov $1, %eax
+ ja L(neq_bigger)
+ neg %eax
+
+L(neq_bigger):
+ ret
+
+ .p2align 4
+L(eq):
+ xorl %eax, %eax
+ ret
+
+END (STRCMP)
+#endif
+
projects / platform / upstream / glibc.git / commitdiff