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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* Copyright (c) 1988 AT&T */ 29 /* All Rights Reserved */ 30 31 /* 32 * The SunStudio compiler may generate calls to _memcpy and so we 33 * need to make sure that the correct symbol exists for these calls, 34 * whether it be libc (first case below) or the kernel (second case). 35 */ 36 37 #if !defined(_KMDB) && !defined(_BOOT) && !defined(_KERNEL) 38 39 #pragma weak _private_memcpy = _memcpy 40 #pragma weak memcpy = _memcpy 41 42 #include "synonyms.h" 43 44 #else 45 46 #pragma weak _memcpy = memcpy 47 48 #endif /* !_KMDB && !_BOOT && !_KERNEL */ 49 50 #include <sys/types.h> 51 52 #if defined(_KERNEL) 53 #include <sys/systm.h> 54 #elif !defined(_BOOT) 55 #include <stddef.h> 56 #include <string.h> 57 #endif 58 59 #include "memcpy.h" 60 61 /* 62 * Copy s0 to s, always copy n bytes. 63 * Return s 64 */ 65 void * 66 memcpy(void *s, const void *s0, size_t n) 67 { 68 if (n != 0) { 69 char *s1 = s; 70 const char *s2 = s0; 71 72 do { 73 *s1++ = *s2++; 74 } while (--n != 0); 75 } 76 return (s); 77 } 78