xref: /freebsd/stand/libsa/zalloc_defs.h (revision fa50a3552d1e759e1bb65e54cb0b7e863bcf54d5)
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 #define USEGUARD		/* use stard/end guard bytes */
37 #define USEENDGUARD
38 #define DMALLOCDEBUG		/* add debugging code to gather stats */
39 #define ZALLOCDEBUG
40 
41 #include <sys/stdint.h>
42 #include "stand.h"
43 #include "zalloc_mem.h"
44 
45 #define Library extern
46 
47 /*
48  * block extension for sbrk()
49  */
50 
51 #define BLKEXTEND	(4 * 1024)
52 #define BLKEXTENDMASK	(BLKEXTEND - 1)
53 
54 /*
55  * Required malloc alignment.
56  *
57  * Embedded platforms using the u-boot API drivers require that all I/O buffers
58  * be on a cache line sized boundary.  The worst case size for that is 64 bytes.
59  * For other platforms, 16 bytes works fine.  The alignment also must be at
60  * least sizeof(struct MemNode); this is asserted in zalloc.c.
61  */
62 
63 #if defined(__arm__) || defined(__mips__) || defined(__powerpc__)
64 #define	MALLOCALIGN		64
65 #else
66 #define	MALLOCALIGN		16
67 #endif
68 #define	MALLOCALIGN_MASK	(MALLOCALIGN - 1)
69 
70 typedef struct Guard {
71     size_t	ga_Bytes;
72     size_t	ga_Magic;	/* must be at least 32 bits */
73 } Guard;
74 
75 #define GAMAGIC		0x55FF44FD
76 #define GAFREE		0x5F54F4DF
77 
78 #include "zalloc_protos.h"
79