1/*- 2 * Copyright (c) 2003 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <machine/asm.h> 28/* 29 * int 30 * wcscmp(const wchar_t *s1, const wchar_t *s2) -- 31 * Return an integer greater than, equal to, or less than 0, when 32 * the string s1 is greater than, equal to, or less than the string s2. 33 */ 34ENTRY(wcscmp) 35 pushl %edi 36 pushl %esi 37 movl 12(%esp),%edi /* s1 */ 38 movl 16(%esp),%esi /* s2 */ 39.p2align 4,0x90 40top: movl (%edi),%eax 41 cmpl %eax,(%esi) 42 jne no0 43 testl %eax,%eax 44 jz same 45 movl 4(%edi),%eax 46 cmpl %eax,4(%esi) 47 jne no4 48 testl %eax,%eax 49 jz same 50 movl 8(%edi),%eax 51 cmpl %eax,8(%esi) 52 jne no8 53 testl %eax,%eax 54 jz same 55 movl 12(%edi),%eax 56 cmpl %eax,12(%esi) 57 jne no12 58 leal 16(%edi),%edi 59 leal 16(%esi),%esi 60 testl %eax,%eax 61 jnz top 62.p2align 2,0x90 63same: xorl %eax,%eax 64 popl %esi 65 popl %edi 66 ret 67.p2align 2,0x90 68no12: leal 4(%esi),%esi 69.p2align 2,0x90 70no8: leal 4(%esi),%esi 71.p2align 2,0x90 72no4: leal 4(%esi),%esi 73.p2align 2,0x90 74no0: subl (%esi),%eax 75 popl %esi 76 popl %edi 77 ret 78END(wcscmp) 79 80 .section .note.GNU-stack,"",%progbits 81