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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
.file "wschr.s"
/
/ Wide character wcschr() implementation
/
/ Algorithm based on Solaris 2.6 gen/strchr.s implementation
/
#include "SYS.h"
ANSI_PRAGMA_WEAK(wcschr,function)
ANSI_PRAGMA_WEAK(wschr,function)
.align 8 / accounts for .loop alignment and prolog
ENTRY(wcschr)
movl 4(%esp),%eax / %eax = string address
movl 8(%esp),%ecx / %ecx = wchar sought
.loop:
movl (%eax),%edx / %edx = wchar of string
cmpl %ecx,%edx / find it?
je .found / yes
testl %edx,%edx / is it null?
je .notfound
movl 4(%eax),%edx / %edx = wchar of string
cmpl %ecx,%edx / find it?
je .found1 / yes
testl %edx,%edx / is it null?
je .notfound
movl 8(%eax),%edx / %edx = wchar of string
cmpl %ecx,%edx / find it?
je .found2 / yes
testl %edx,%edx / is it null?
je .notfound
movl 12(%eax),%edx / %edx = wchar of string
cmpl %ecx,%edx / find it?
je .found3 / yes
addl $16,%eax
testl %edx,%edx / is it null?
jne .loop
.notfound:
xorl %eax,%eax / %eax = NULL
ret
.found3:
addl $12,%eax
ret
.found2:
addl $8,%eax
ret
.found1:
addl $4,%eax
.found:
ret
SET_SIZE(wcschr)
ENTRY(wschr)
_prologue_
movl _esp_(8),%eax
movl _esp_(4),%edx
pushl %eax
pushl %edx
call _fref_(wcschr)
addl $8,%esp
_epilogue_
ret
SET_SIZE(wschr)
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