1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_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. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 * This header file describes the structures of the file format for "fat"
30 * architecture specific file (wrapper design).  At the begining of the file
31 * there is one fat_header structure followed by a number of fat_arch
32 * structures.  For each architecture in the file, specified by a pair of
33 * cputype and cpusubtype, the fat_header describes the file offset, file
34 * size and alignment in the file of the architecture specific member.
35 * The padded bytes in the file to place each member on it's specific alignment
36 * are defined to be read as zeros and can be left as "holes" if the file system
37 * can support them as long as they read as zeros.
38 *
39 * All structures defined here are always written and read to/from disk
40 * in big-endian order.
41 */
42
43/*
44 * <mach/machine.h> is needed here for the cpu_type_t and cpu_subtype_t types
45 * and contains the constants for the possible values of these types.
46 */
47#include <mach/machine.h>
48
49#define FAT_MAGIC	0xcafebabe
50#define FAT_CIGAM	0xbebafeca
51
52struct fat_header {
53	unsigned long	magic;		/* FAT_MAGIC */
54	unsigned long	nfat_arch;	/* number of structs that follow */
55};
56
57struct fat_arch {
58	cpu_type_t	cputype;	/* cpu specifier (int) */
59	cpu_subtype_t	cpusubtype;	/* machine specifier (int) */
60	unsigned long	offset;		/* file offset to this object file */
61	unsigned long	size;		/* size of this object file */
62	unsigned long	align;		/* alignment as a power of 2 */
63};
64
65#ifdef KERNEL
66
67#include <mach/mach_types.h>
68
69struct vnode;
70
71/* XXX return type should be load_return_t, but mach_loader.h is not in scope */
72int fatfile_getarch_affinity(struct vnode *vp, vm_offset_t data_ptr,
73		struct fat_arch *archret, int affinity);
74int fatfile_getarch(struct vnode *vp, vm_offset_t data_ptr,
75		struct fat_arch *archret);
76int fatfile_getarch_with_bits(struct vnode *vp, integer_t archbits,
77		vm_offset_t data_ptr, struct fat_arch *archret);
78
79#endif	/* KERNEL */
80