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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 #include "synonyms.h" 31 #include <sys/types.h> 32 #include <wchar.h> 33 #include <limits.h> 34 #include <string.h> 35 #include "libc.h" 36 37 wchar_t * 38 wmemcpy(wchar_t *ws1, const wchar_t *ws2, size_t n) 39 { 40 wchar_t *p1, *p2; 41 size_t len; 42 size_t max = SIZE_MAX / sizeof (wchar_t); 43 44 if (n <= max) { 45 return ((wchar_t *)memcpy((void *)ws1, 46 (const void *)ws2, n * sizeof (wchar_t))); 47 } 48 49 p1 = ws1; 50 p2 = (wchar_t *)ws2; 51 do { 52 if (n > max) { 53 len = max; 54 } else { 55 len = n; 56 } 57 (void) memcpy((void *)p1, 58 (const void *)p2, len * sizeof (wchar_t)); 59 n = n - len; 60 p1 += len; 61 p2 += len; 62 } while (n != 0); 63 return (ws1); 64 } 65