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 2006 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 #if defined(_BOOT) 29 #include <sys/salib.h> 30 #else 31 #include <sys/systm.h> 32 #endif 33 34 /* 35 * Implementations of functions described in memory(3C). 36 * These functions match the section 3C manpages. 37 */ 38 39 void * 40 memmove(void *s1, const void *s2, size_t n) 41 { 42 #if defined(_BOOT) 43 bcopy(s2, s1, n); 44 #else 45 ovbcopy(s2, s1, n); 46 #endif 47 return (s1); 48 } 49 50 void * 51 memset(void *s, int c, size_t n) 52 { 53 unsigned char *t; 54 55 if ((unsigned char)c == '\0') 56 bzero(s, n); 57 else { 58 for (t = (unsigned char *)s; n > 0; n--) 59 *t++ = (unsigned char)c; 60 } 61 return (s); 62 } 63 64 int 65 memcmp(const void *s1, const void *s2, size_t n) 66 { 67 const uchar_t *ps1 = s1; 68 const uchar_t *ps2 = s2; 69 70 if (s1 != s2 && n != 0) { 71 do { 72 if (*ps1++ != *ps2++) 73 return (ps1[-1] - ps2[-1]); 74 } while (--n != 0); 75 } 76 77 return (0); 78 } 79 80 /* 81 * The SunStudio compiler may generate calls to _memcpy and so we 82 * need to make sure that the correct symbol exists for these calls. 83 */ 84 #pragma weak _memcpy = memcpy 85 void * 86 memcpy(void *s1, const void *s2, size_t n) 87 { 88 bcopy(s2, s1, n); 89 return (s1); 90 } 91 92 void * 93 memchr(const void *sptr, int c1, size_t n) 94 { 95 if (n != 0) { 96 unsigned char c = (unsigned char)c1; 97 const unsigned char *sp = sptr; 98 99 do { 100 if (*sp++ == c) 101 return ((void *)--sp); 102 } while (--n != 0); 103 } 104 return (NULL); 105 } 106