/*
 * 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)