1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include "lint.h"
30#include <sys/types.h>
31#include <wchar.h>
32#include <limits.h>
33#include <string.h>
34#include "libc.h"
35
36wchar_t *
37wmemcpy(wchar_t *ws1, const wchar_t *ws2, size_t n)
38{
39	wchar_t	*p1, *p2;
40	size_t	len;
41	size_t	max = SIZE_MAX / sizeof (wchar_t);
42
43	if (n <= max) {
44		return ((wchar_t *)memcpy((void *)ws1,
45		    (const void *)ws2, n * sizeof (wchar_t)));
46	}
47
48	p1 = ws1;
49	p2 = (wchar_t *)ws2;
50	do {
51		if (n > max) {
52			len = max;
53		} else {
54			len = n;
55		}
56		(void) memcpy((void *)p1,
57		    (const void *)p2, len * sizeof (wchar_t));
58		n = n - len;
59		p1 += len;
60		p2 += len;
61	} while (n != 0);
62	return (ws1);
63}
64