xref: /illumos-gate/usr/src/boot/libsa/zalloc_defs.h (revision 22028508)
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 
30 /*
31  * DEFS.H
32  */
33 
34 #ifndef _ZALLOC_DEFS_H
35 #define	_ZALLOC_DEFS_H
36 
37 #define	USEGUARD		/* use stard/end guard bytes */
38 #define	USEENDGUARD
39 #define	DMALLOCDEBUG		/* add debugging code to gather stats */
40 #define	ZALLOCDEBUG
41 
42 #include <sys/stdint.h>
43 #include "stand.h"
44 #include "zalloc_mem.h"
45 
46 #define	Library extern
47 
48 /*
49  * block extension for sbrk()
50  */
51 
52 #define	BLKEXTEND	(4 * 1024)
53 #define	BLKEXTENDMASK	(BLKEXTEND - 1)
54 
55 /*
56  * Required malloc alignment.
57  *
58  * Embedded platforms using the u-boot API drivers require that all I/O buffers
59  * be on a cache line sized boundary.  The worst case size for that is 64 bytes.
60  * For other platforms, 16 bytes works fine.  The alignment also must be at
61  * least sizeof(struct MemNode); this is asserted in zalloc.c.
62  */
63 
64 #if defined(__arm__) || defined(__mips__) || defined(__powerpc__)
65 #define	MALLOCALIGN		64
66 #else
67 #define	MALLOCALIGN		16
68 #endif
69 #define	MALLOCALIGN_MASK	(MALLOCALIGN - 1)
70 
71 typedef struct Guard {
72 	size_t	ga_Bytes;
73 	size_t	ga_Magic;	/* must be at least 32 bits */
74 } Guard;
75 
76 #define	GAMAGIC		0x55FF44FD
77 #define	GAFREE		0x5F54F4DF
78 
79 #include "zalloc_protos.h"
80 
81 #endif	/* _ZALLOC_DEFS_H */
82