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 * Copyright 2004 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 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #if !defined(_KMDB) && !defined(_KERNEL) 34 35 #pragma weak memmove = _memmove 36 37 #include "synonyms.h" 38 #endif /* !_KMDB && !_KERNEL */ 39 40 #include <sys/types.h> 41 42 #if defined(_KERNEL) 43 #include <sys/systm.h> 44 #else 45 #include <string.h> 46 #include <memory.h> 47 #endif 48 49 /* 50 * Copy s0 to s, always copy n bytes. 51 * Return s 52 * Copying between objects that overlap will take place correctly 53 */ 54 void * 55 memmove(void *s, const void *s0, size_t n) 56 { 57 if (n != 0) { 58 char *s1 = s; 59 const char *s2 = s0; 60 61 if (s1 <= s2) { 62 do { 63 *s1++ = *s2++; 64 } while (--n != 0); 65 } else { 66 s2 += n; 67 s1 += n; 68 do { 69 *--s1 = *--s2; 70 } while (--n != 0); 71 } 72 } 73 return (s); 74 } 75