/*-
 * Copyright (c) 2003 Tim J. Robbins.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <machine/asm.h>
/*
 * int
 * wcscmp(const wchar_t *s1, const wchar_t *s2) --
 *      Return an integer greater than, equal to, or less than 0, when
 *      the string s1 is greater than, equal to, or less than the string s2.
 */
ENTRY(wcscmp)
        pushl   %edi
        pushl   %esi
        movl    12(%esp),%edi           /* s1 */
        movl    16(%esp),%esi           /* s2 */
.p2align 4,0x90
top:    movl    (%edi),%eax
        cmpl    %eax,(%esi)
        jne     no0
        testl   %eax,%eax
        jz      same
        movl    4(%edi),%eax
        cmpl    %eax,4(%esi)
        jne     no4
        testl   %eax,%eax
        jz      same
        movl    8(%edi),%eax
        cmpl    %eax,8(%esi)
        jne     no8
        testl   %eax,%eax
        jz      same
        movl    12(%edi),%eax
        cmpl    %eax,12(%esi)
        jne     no12
        leal    16(%edi),%edi
        leal    16(%esi),%esi
        testl   %eax,%eax
        jnz     top
.p2align 2,0x90
same:   xorl    %eax,%eax
        popl    %esi
        popl    %edi
        ret
.p2align 2,0x90
no12:   leal    4(%esi),%esi
.p2align 2,0x90
no8:    leal    4(%esi),%esi
.p2align 2,0x90
no4:    leal    4(%esi),%esi
.p2align 2,0x90
no0:    subl    (%esi),%eax
        popl    %esi
        popl    %edi
        ret
END(wcscmp)

        .section .note.GNU-stack,"",%progbits