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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 "wslen.s"
/*
* Wide character wcslen() implementation
*
* size_t
* wcslen(const wchar_t *s)
*{
* const wchar_t *s0 = s + 1;
* while (*s++)
* ;
* return (s - s0);
*}
*/
#include "SYS.h"
ANSI_PRAGMA_WEAK(wcslen,function)
ANSI_PRAGMA_WEAK(wslen,function)
ENTRY(wcslen)
movl 4(%esp),%edx
xorl %eax,%eax
.align 8
.loop:
cmpl $0,(%edx)
je .out0
cmpl $0,4(%edx)
je .out1
cmpl $0,8(%edx)
je .out2
cmpl $0,12(%edx)
je .out3
addl $4,%eax
addl $16,%edx
jmp .loop
.align 4
.out1:
incl %eax
.out0:
ret
.align 4
.out2:
add $2,%eax
ret
.align 4
.out3:
add $3, %eax
ret
SET_SIZE(wcslen)
ENTRY(wslen)
_prologue_
movl _esp_(8),%eax
movl _esp_(4),%edx
pushl %eax
pushl %edx
call _fref_(wcslen)
addl $8,%esp
_epilogue_
ret
SET_SIZE(wslen)
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