EXTERNAL_HEADERS/mach-o/fat.h

   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 #include <architecture/byte_order.h>
  49
  50 #define FAT_MAGIC       0xcafebabe
  51 #define FAT_CIGAM       NXSwapLong(FAT_MAGIC)
  52
  53 struct fat_header {
  54         unsigned long   magic;          /* FAT_MAGIC */
  55         unsigned long   nfat_arch;      /* number of structs that follow */
  56 };
  57
  58 struct fat_arch {
  59         cpu_type_t      cputype;        /* cpu specifier (int) */
  60         cpu_subtype_t   cpusubtype;     /* machine specifier (int) */
  61         unsigned long   offset;         /* file offset to this object file */
  62         unsigned long   size;           /* size of this object file */
  63         unsigned long   align;          /* alignment as a power of 2 */
  64 };
  65
  66 #ifdef KERNEL
  67
  68 #include <mach/mach_types.h>
  69
  70 struct vnode;
  71
  72 /* XXX return type should be load_return_t, but mach_loader.h is not in scope */
  73 int fatfile_getarch_affinity(struct vnode *vp, vm_offset_t data_ptr,
  74                 struct fat_arch *archret, int affinity);
  75 int fatfile_getarch(struct vnode *vp, vm_offset_t data_ptr,
  76                 struct fat_arch *archret);
  77 int fatfile_getarch_with_bits(struct vnode *vp, integer_t archbits,
  78                 vm_offset_t data_ptr, struct fat_arch *archret);
  79
  80 #endif  /* KERNEL */