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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #if defined(_BOOT) 26 #include <sys/salib.h> 27 #else 28 #include <sys/systm.h> 29 #endif 30 31 /* 32 * Implementations of functions described in memory(3C). 33 * These functions match the section 3C manpages. 34 */ 35 /* 36 * The SunStudio compiler may generate calls to _memmove, _memset, 37 * and _memcpy; So we need to make sure that the correct symbols 38 * exist for these calls. 39 */ 40 #pragma weak _memmove = memmove 41 void * 42 memmove(void *s1, const void *s2, size_t n) 43 { 44 #if defined(_BOOT) 45 bcopy(s2, s1, n); 46 #else 47 ovbcopy(s2, s1, n); 48 #endif 49 return (s1); 50 } 51 52 #pragma weak _memset = memset 53 void * 54 memset(void *s, int c, size_t n) 55 { 56 unsigned char *t; 57 58 if ((unsigned char)c == '\0') 59 bzero(s, n); 60 else { 61 for (t = (unsigned char *)s; n > 0; n--) 62 *t++ = (unsigned char)c; 63 } 64 return (s); 65 } 66 67 int 68 memcmp(const void *s1, const void *s2, size_t n) 69 { 70 const uchar_t *ps1 = s1; 71 const uchar_t *ps2 = s2; 72 73 if (s1 != s2 && n != 0) { 74 do { 75 if (*ps1++ != *ps2++) 76 return (ps1[-1] - ps2[-1]); 77 } while (--n != 0); 78 } 79 80 return (0); 81 } 82 83 #pragma weak _memcpy = memcpy 84 void * 85 memcpy(void *s1, const void *s2, size_t n) 86 { 87 bcopy(s2, s1, n); 88 return (s1); 89 } 90 91 void * 92 memchr(const void *sptr, int c1, size_t n) 93 { 94 if (n != 0) { 95 unsigned char c = (unsigned char)c1; 96 const unsigned char *sp = sptr; 97 98 do { 99 if (*sp++ == c) 100 return ((void *)--sp); 101 } while (--n != 0); 102 } 103 return (NULL); 104 } 105