1/*
2 * This module derived from code donated to the FreeBSD Project by
3 * Matthew Dillon <dillon@backplane.com>
4 *
5 * Copyright (c) 1998 The FreeBSD Project
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32/*
33 * DEFS.H
34 */
35
36#ifndef _ZALLOC_DEFS_H
37#define	_ZALLOC_DEFS_H
38
39#define	USEGUARD		/* use stard/end guard bytes */
40#define	USEENDGUARD
41#define	DMALLOCDEBUG		/* add debugging code to gather stats */
42#define	ZALLOCDEBUG
43
44#include <sys/stdint.h>
45#include "stand.h"
46#include "zalloc_mem.h"
47
48#define	Library extern
49
50/*
51 * block extension for sbrk()
52 */
53
54#define	BLKEXTEND	(4 * 1024)
55#define	BLKEXTENDMASK	(BLKEXTEND - 1)
56
57/*
58 * Required malloc alignment.
59 *
60 * Embedded platforms using the u-boot API drivers require that all I/O buffers
61 * be on a cache line sized boundary.  The worst case size for that is 64 bytes.
62 * For other platforms, 16 bytes works fine.  The alignment also must be at
63 * least sizeof(struct MemNode); this is asserted in zalloc.c.
64 */
65
66#if defined(__arm__) || defined(__mips__) || defined(__powerpc__)
67#define	MALLOCALIGN		64
68#else
69#define	MALLOCALIGN		16
70#endif
71#define	MALLOCALIGN_MASK	(MALLOCALIGN - 1)
72
73typedef struct Guard {
74	size_t	ga_Bytes;
75	size_t	ga_Magic;	/* must be at least 32 bits */
76} Guard;
77
78#define	GAMAGIC		0x55FF44FD
79#define	GAFREE		0x5F54F4DF
80
81#include "zalloc_protos.h"
82
83#endif	/* _ZALLOC_DEFS_H */
84