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