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 2002-2003 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 #include <sys/salib.h> 30 31 /* 32 * For documentation on these functions, see malloc(3C). 33 */ 34 35 void * 36 malloc(size_t size) 37 { 38 size_t *iaddr; 39 40 iaddr = (size_t *)bkmem_alloc(size + sizeof (size_t)); 41 if (iaddr == NULL) { 42 errno = ENOMEM; 43 return (NULL); 44 } 45 46 iaddr[0] = size; 47 return (&iaddr[1]); 48 } 49 50 void * 51 calloc(size_t number, size_t size) 52 { 53 void *addr; 54 55 addr = malloc(number * size); 56 if (addr == NULL) 57 return (NULL); 58 59 return (memset(addr, 0, number * size)); 60 } 61 62 void * 63 realloc(void *oldaddr, size_t size) 64 { 65 void *addr; 66 size_t oldsize; 67 68 addr = malloc(size); 69 if (oldaddr != NULL) { 70 oldsize = ((size_t *)oldaddr)[-1]; 71 if (addr != NULL) { 72 bcopy(oldaddr, addr, (oldsize > size ? oldsize : size)); 73 free(oldaddr); 74 } 75 } 76 77 return (addr); 78 } 79 80 void 81 free(void *addr) 82 { 83 size_t *lenloc; 84 85 if (addr == NULL) 86 return; 87 lenloc = (size_t *)addr - 1; 88 bkmem_free((caddr_t)lenloc, *lenloc + sizeof (size_t)); 89 } 90