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__FBSDID("$FreeBSD$"); 29 30/* 31 * int 32 * wcscmp(const wchar_t *s1, const wchar_t *s2) -- 33 * Return an integer greater than, equal to, or less than 0, when 34 * the string s1 is greater than, equal to, or less than the string s2. 35 */ 36ENTRY(wcscmp) 37 pushl %edi 38 pushl %esi 39 movl 12(%esp),%edi /* s1 */ 40 movl 16(%esp),%esi /* s2 */ 41.p2align 4,0x90 42top: movl (%edi),%eax 43 cmpl %eax,(%esi) 44 jne no0 45 testl %eax,%eax 46 jz same 47 movl 4(%edi),%eax 48 cmpl %eax,4(%esi) 49 jne no4 50 testl %eax,%eax 51 jz same 52 movl 8(%edi),%eax 53 cmpl %eax,8(%esi) 54 jne no8 55 testl %eax,%eax 56 jz same 57 movl 12(%edi),%eax 58 cmpl %eax,12(%esi) 59 jne no12 60 leal 16(%edi),%edi 61 leal 16(%esi),%esi 62 testl %eax,%eax 63 jnz top 64.p2align 2,0x90 65same: xorl %eax,%eax 66 popl %esi 67 popl %edi 68 ret 69.p2align 2,0x90 70no12: leal 4(%esi),%esi 71.p2align 2,0x90 72no8: leal 4(%esi),%esi 73.p2align 2,0x90 74no4: leal 4(%esi),%esi 75.p2align 2,0x90 76no0: subl (%esi),%eax 77 popl %esi 78 popl %edi 79 ret 80END(wcscmp) 81 82 .section .note.GNU-stack,"",%progbits 83