--- /dev/null
+/* Optimized wcscmp for x86-64 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. */
+
+#include <sysdep.h>
+#include <init-arch.h>
+
+/* Define multiple versions only for the definition in libc and for
+ the DSO. In static binaries we need wcscmp before the initialization
+ happened. */
+
+ .text
+ENTRY (wcscmp)
+/*
+ * This implementation uses SSE to compare up to 16 bytes at a time.
+*/
+ mov %esi, %eax
+ mov %edi, %edx
+ pxor %xmm0, %xmm0 /* clear %xmm0 for null char checks */
+ mov %al, %ch
+ mov %dl, %cl
+ and $63, %eax /* rsi alignment in cache line */
+ and $63, %edx /* rdi 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 (%rsi), %ecx
+ cmp %ecx, (%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 4(%rsi), %ecx
+ cmp %ecx, 4(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 8(%rsi), %ecx
+ cmp %ecx, 8(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 12(%rsi), %ecx
+ cmp %ecx, 12(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ movdqu 16(%rdi), %xmm1
+ movdqu 16(%rsi), %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(%rdi), %xmm1
+ movdqu 32(%rsi), %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(%rdi), %xmm1
+ movdqu 48(%rsi), %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, %rsi
+ add $64, %rdi
+ 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 (%rsi), %ecx
+ cmp %ecx, (%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 4(%rsi), %ecx
+ cmp %ecx, 4(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 8(%rsi), %ecx
+ cmp %ecx, 8(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 12(%rsi), %ecx
+ cmp %ecx, 12(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ movdqu 16(%rdi), %xmm1
+ movdqu 16(%rsi), %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(%rdi), %xmm1
+ movdqu 32(%rsi), %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(%rsi), %ecx
+ cmp %ecx, 48(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 52(%rsi), %ecx
+ cmp %ecx, 52(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 56(%rsi), %ecx
+ cmp %ecx, 56(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 60(%rsi), %ecx
+ cmp %ecx, 60(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ add $64, %rsi
+ add $64, %rdi
+ 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 (%rdi), %xmm0
+ mov (%rdi), %eax
+ pmovmskb %xmm0, %ecx
+ test %ecx, %ecx
+ jnz L(less4_double_words1)
+
+ sub (%rsi), %eax
+ jnz L(return)
+
+ mov 4(%rdi), %eax
+ sub 4(%rsi), %eax
+ jnz L(return)
+
+ mov 8(%rdi), %eax
+ sub 8(%rsi), %eax
+ jnz L(return)
+
+ mov 12(%rdi), %eax
+ sub 12(%rsi), %eax
+ jnz L(return)
+
+ movdqu 16(%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd 16(%rdi), %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(%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd 32(%rdi), %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(%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd 48(%rdi), %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, %rsi
+ add $64, %rdi
+ 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 (%rsi), %ecx
+ cmp %ecx, (%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 4(%rsi), %ecx
+ cmp %ecx, 4(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 8(%rsi), %ecx
+ cmp %ecx, 8(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 12(%rsi), %ecx
+ cmp %ecx, 12(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 16(%rsi), %ecx
+ cmp %ecx, 16(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 20(%rsi), %ecx
+ cmp %ecx, 20(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 24(%rsi), %ecx
+ cmp %ecx, 24(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 28(%rsi), %ecx
+ cmp %ecx, 28(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ movdqu 32(%rdi), %xmm1
+ movdqu 32(%rsi), %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(%rdi), %xmm1
+ movdqu 48(%rsi), %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, %rsi
+ add $64, %rdi
+ 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 (%rsi), %ecx
+ cmp %ecx, (%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 4(%rsi), %ecx
+ cmp %ecx, 4(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 8(%rsi), %ecx
+ cmp %ecx, 8(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 12(%rsi), %ecx
+ cmp %ecx, 12(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ movdqu 16(%rdi), %xmm1
+ movdqu 16(%rsi), %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(%rsi), %ecx
+ cmp %ecx, 32(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 36(%rsi), %ecx
+ cmp %ecx, 36(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 40(%rsi), %ecx
+ cmp %ecx, 40(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 44(%rsi), %ecx
+ cmp %ecx, 44(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ movdqu 48(%rdi), %xmm1
+ movdqu 48(%rsi), %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, %rsi
+ add $64, %rdi
+ jmp L(continue_16_48)
+
+ .p2align 4
+L(continue_00_00):
+ movdqa (%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd (%rsi), %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(%rdi), %xmm3
+ pcmpeqd %xmm3, %xmm0 /* Any null double_word? */
+ pcmpeqd 16(%rsi), %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(%rdi), %xmm5
+ pcmpeqd %xmm5, %xmm0 /* Any null double_word? */
+ pcmpeqd 32(%rsi), %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(%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd 48(%rsi), %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, %rsi
+ add $64, %rdi
+ jmp L(continue_00_00)
+
+ .p2align 4
+L(continue_00_32):
+ movdqu (%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd (%rdi), %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, %rsi
+ add $16, %rdi
+ jmp L(continue_00_48)
+
+ .p2align 4
+L(continue_00_16):
+ movdqu (%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd (%rdi), %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(%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd 16(%rdi), %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, %rsi
+ add $32, %rdi
+ jmp L(continue_00_48)
+
+ .p2align 4
+L(continue_00_0):
+ movdqu (%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd (%rdi), %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(%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd 16(%rdi), %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(%rsi), %xmm2
+ pcmpeqd %xmm2, %xmm0 /* Any null double_word? */
+ pcmpeqd 32(%rdi), %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, %rsi
+ add $48, %rdi
+ jmp L(continue_00_48)
+
+ .p2align 4
+L(continue_48_00):
+ pcmpeqd (%rsi), %xmm0
+ mov (%rdi), %eax
+ pmovmskb %xmm0, %ecx
+ test %ecx, %ecx
+ jnz L(less4_double_words1)
+
+ sub (%rsi), %eax
+ jnz L(return)
+
+ mov 4(%rdi), %eax
+ sub 4(%rsi), %eax
+ jnz L(return)
+
+ mov 8(%rdi), %eax
+ sub 8(%rsi), %eax
+ jnz L(return)
+
+ mov 12(%rdi), %eax
+ sub 12(%rsi), %eax
+ jnz L(return)
+
+ movdqu 16(%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd 16(%rsi), %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(%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd 32(%rsi), %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(%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd 48(%rsi), %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, %rsi
+ add $64, %rdi
+ jmp L(continue_48_00)
+
+ .p2align 4
+L(continue_32_00):
+ movdqu (%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd (%rsi), %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, %rsi
+ add $16, %rdi
+ jmp L(continue_48_00)
+
+ .p2align 4
+L(continue_16_00):
+ movdqu (%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd (%rsi), %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(%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd 16(%rsi), %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, %rsi
+ add $32, %rdi
+ jmp L(continue_48_00)
+
+ .p2align 4
+L(continue_0_00):
+ movdqu (%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd (%rsi), %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(%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd 16(%rsi), %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(%rdi), %xmm1
+ pcmpeqd %xmm1, %xmm0 /* Any null double_word? */
+ pcmpeqd 32(%rsi), %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, %rsi
+ add $48, %rdi
+ jmp L(continue_48_00)
+
+ .p2align 4
+L(continue_32_32):
+ movdqu (%rdi), %xmm1
+ movdqu (%rsi), %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, %rsi
+ add $16, %rdi
+ jmp L(continue_48_48)
+
+ .p2align 4
+L(continue_16_16):
+ movdqu (%rdi), %xmm1
+ movdqu (%rsi), %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(%rdi), %xmm3
+ movdqu 16(%rsi), %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, %rsi
+ add $32, %rdi
+ jmp L(continue_48_48)
+
+ .p2align 4
+L(continue_0_0):
+ movdqu (%rdi), %xmm1
+ movdqu (%rsi), %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(%rdi), %xmm3
+ movdqu 16(%rsi), %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(%rdi), %xmm1
+ movdqu 32(%rsi), %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, %rsi
+ add $48, %rdi
+ jmp L(continue_48_48)
+
+ .p2align 4
+L(continue_0_16):
+ movdqu (%rdi), %xmm1
+ movdqu (%rsi), %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(%rdi), %xmm1
+ movdqu 16(%rsi), %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, %rsi
+ add $32, %rdi
+ jmp L(continue_32_48)
+
+ .p2align 4
+L(continue_0_32):
+ movdqu (%rdi), %xmm1
+ movdqu (%rsi), %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, %rsi
+ add $16, %rdi
+ jmp L(continue_16_48)
+
+ .p2align 4
+L(continue_16_32):
+ movdqu (%rdi), %xmm1
+ movdqu (%rsi), %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, %rsi
+ add $16, %rdi
+ jmp L(continue_32_48)
+
+ .p2align 4
+L(less4_double_words1):
+ cmp (%rsi), %eax
+ jne L(nequal)
+ test %eax, %eax
+ jz L(equal)
+
+ mov 4(%rsi), %ecx
+ cmp %ecx, 4(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 8(%rsi), %ecx
+ cmp %ecx, 8(%rdi)
+ jne L(nequal)
+ test %ecx, %ecx
+ jz L(equal)
+
+ mov 12(%rsi), %edx
+ mov 12(%rdi), %eax
+ sub %edx, %eax
+ ret
+
+ .p2align 4
+L(less4_double_words):
+ test %dl, %dl
+ jz L(next_two_double_words)
+ and $15, %dl
+ jz L(second_double_word)
+ mov (%rdi), %eax
+ sub (%rsi), %eax
+ ret
+
+ .p2align 4
+L(second_double_word):
+ mov 4(%rdi), %eax
+ sub 4(%rsi), %eax
+ ret
+
+ .p2align 4
+L(next_two_double_words):
+ and $15, %dh
+ jz L(fourth_double_word)
+ mov 8(%rdi), %eax
+ sub 8(%rsi), %eax
+ ret
+
+ .p2align 4
+L(fourth_double_word):
+ mov 12(%rdi), %eax
+ sub 12(%rsi), %eax
+ ret
+
+ .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(%rdi), %eax
+ sub 16(%rsi), %eax
+ ret
+
+ .p2align 4
+L(second_double_word_16):
+ mov 20(%rdi), %eax
+ sub 20(%rsi), %eax
+ ret
+
+ .p2align 4
+L(next_two_double_words_16):
+ and $15, %dh
+ jz L(fourth_double_word_16)
+ mov 24(%rdi), %eax
+ sub 24(%rsi), %eax
+ ret
+
+ .p2align 4
+L(fourth_double_word_16):
+ mov 28(%rdi), %eax
+ sub 28(%rsi), %eax
+ ret
+
+ .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(%rdi), %eax
+ sub 32(%rsi), %eax
+ ret
+
+ .p2align 4
+L(second_double_word_32):
+ mov 36(%rdi), %eax
+ sub 36(%rsi), %eax
+ ret
+
+ .p2align 4
+L(next_two_double_words_32):
+ and $15, %dh
+ jz L(fourth_double_word_32)
+ mov 40(%rdi), %eax
+ sub 40(%rsi), %eax
+ ret
+
+ .p2align 4
+L(fourth_double_word_32):
+ mov 44(%rdi), %eax
+ sub 44(%rsi), %eax
+ ret
+
+ .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(%rdi), %eax
+ sub 48(%rsi), %eax
+ ret
+
+ .p2align 4
+L(second_double_word_48):
+ mov 52(%rdi), %eax
+ sub 52(%rsi), %eax
+ ret
+
+ .p2align 4
+L(next_two_double_words_48):
+ and $15, %dh
+ jz L(fourth_double_word_48)
+ mov 56(%rdi), %eax
+ sub 56(%rsi), %eax
+ ret
+
+ .p2align 4
+L(fourth_double_word_48):
+ mov 60(%rdi), %eax
+ sub 60(%rsi), %eax
+ ret
+
+ .p2align 4
+L(return):
+ ret
+
+ .p2align 4
+L(nequal):
+ mov $1, %eax
+ ja L(nequal_bigger)
+ neg %eax
+
+L(nequal_bigger):
+ ret
+
+ .p2align 4
+L(equal):
+ xor %rax, %rax
+ ret
+
+END (wcscmp)
+libc_hidden_def (wcscmp)
projects / external / glibc.git / commitdiff