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 41void * 42memmove(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 53void * 54memset(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 67int 68memcmp(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 84void * 85memcpy(void *s1, const void *s2, size_t n) 86{ 87 bcopy(s2, s1, n); 88 return (s1); 89} 90 91void * 92memchr(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