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
35void *
36malloc(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
50void *
51calloc(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
62void *
63realloc(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
80void
81free(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