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1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
7 *
8 * This file contains Original Code and/or Modifications of Original Code
9 * as defined in and that are subject to the Apple Public Source License
10 * Version 2.0 (the 'License'). You may not use this file except in
11 * compliance with the License. Please obtain a copy of the License at
12 * http://www.opensource.apple.com/apsl/ and read it before using this
13 * file.
14 *
15 * The Original Code and all software distributed under the License are
16 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
17 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
18 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
20 * Please see the License for the specific language governing rights and
21 * limitations under the License.
22 *
23 * @APPLE_LICENSE_HEADER_END@
24 */
25/*
26 * This header file describes the structures of the file format for "fat"
27 * architecture specific file (wrapper design). At the begining of the file
28 * there is one fat_header structure followed by a number of fat_arch
29 * structures. For each architecture in the file, specified by a pair of
30 * cputype and cpusubtype, the fat_header describes the file offset, file
31 * size and alignment in the file of the architecture specific member.
32 * The padded bytes in the file to place each member on it's specific alignment
33 * are defined to be read as zeros and can be left as "holes" if the file system
34 * can support them as long as they read as zeros.
35 *
36 * All structures defined here are always written and read to/from disk
37 * in big-endian order.
38 */
39
40/*
41 * <mach/machine.h> is needed here for the cpu_type_t and cpu_subtype_t types
42 * and contains the constants for the possible values of these types.
43 */
44#include <mach/machine.h>
45#include <architecture/byte_order.h>
46
47#define FAT_MAGIC 0xcafebabe
48#define FAT_CIGAM NXSwapLong(FAT_MAGIC)
49
50struct fat_header {
51 unsigned long magic; /* FAT_MAGIC */
52 unsigned long nfat_arch; /* number of structs that follow */
53};
54
55struct fat_arch {
56 cpu_type_t cputype; /* cpu specifier (int) */
57 cpu_subtype_t cpusubtype; /* machine specifier (int) */
58 unsigned long offset; /* file offset to this object file */
59 unsigned long size; /* size of this object file */
60 unsigned long align; /* alignment as a power of 2 */
61};
62