1  /*
 2   * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 3   *
 4   * @APPLE_LICENSE_HEADER_START@
 5   * 
 6   * This file contains Original Code and/or Modifications of Original Code
 7   * as defined in and that are subject to the Apple Public Source License
 8   * Version 2.0 (the 'License'). You may not use this file except in
 9   * compliance with the License. Please obtain a copy of the License at
10   * http://www.opensource.apple.com/apsl/ and read it before using this
11   * file.
12   * 
13   * The Original Code and all software distributed under the License are
14   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18   * Please see the License for the specific language governing rights and
19   * limitations under the License.
20   * 
21   * @APPLE_LICENSE_HEADER_END@
22   */
23  #ifndef _MACH_O_FAT_H_
24  #define _MACH_O_FAT_H_
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 <stdint.h>
45  #include <mach/machine.h>
46  #include <architecture/byte_order.h>
47  
48  #define FAT_MAGIC	0xcafebabe
49  #define FAT_CIGAM	0xbebafeca	/* NXSwapLong(FAT_MAGIC) */
50  
51  struct fat_header {
52  	uint32_t	magic;		/* FAT_MAGIC */
53  	uint32_t	nfat_arch;	/* number of structs that follow */
54  };
55  
56  struct fat_arch {
57  	cpu_type_t	cputype;	/* cpu specifier (int) */
58  	cpu_subtype_t	cpusubtype;	/* machine specifier (int) */
59  	uint32_t	offset;		/* file offset to this object file */
60  	uint32_t	size;		/* size of this object file */
61  	uint32_t	align;		/* alignment as a power of 2 */
62  };
63  
64  #endif /* _MACH_O_FAT_H_ */