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 36 wchar_t * 37 wmemcpy(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