/*-
* 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>
__FBSDID("$FreeBSD: src/lib/libc/i386/string/wcschr.S,v 1.2.2.1.2.1 2009/10/25 01:10:29 kensmith Exp $");
/*
* wchar_t *
* wcschr(const wchar_t *s, wchar_t c) --
* Return pointer to first occurrence of the character `c' in the wide
* character string `s', or NULL if not found.
*/
ENTRY(wcschr)
movl 4(%esp),%ecx /* String */
movl 8(%esp),%eax /* Character */
pushl %ebx
.p2align 4,0x90
L1: movl (%ecx),%ebx
cmpl %eax,%ebx
je found0
testl %ebx,%ebx
jz no
movl 4(%ecx),%ebx
cmpl %eax,%ebx
je found1
testl %ebx,%ebx
jz no
movl 8(%ecx),%ebx
cmpl %eax,%ebx
je found2
testl %ebx,%ebx
jz no
movl 12(%ecx),%ebx
cmpl %eax,%ebx
je found3
testl %ebx,%ebx
jz no
leal 16(%ecx),%ecx
jmp L1
.p2align 2,0x90
found3: leal 4(%ecx),%ecx
.p2align 2,0x90
found2: leal 4(%ecx),%ecx
.p2align 2,0x90
found1: leal 4(%ecx),%ecx
.p2align 2,0x90
found0: popl %ebx
movl %ecx,%eax
ret
.p2align 2,0x90
no: popl %ebx
xorl %eax,%eax
ret
END(wcschr)
