arch/all-pc/boot/grub2-aros/include/grub/macho.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef GRUB_MACHO_H
  20 #define GRUB_MACHO_H 1
  21 #include <grub/types.h>
  22
  23 /* Multi-architecture header. Always in big-endian. */
  24 struct grub_macho_fat_header
  25 {
  26   grub_uint32_t magic;
  27   grub_uint32_t nfat_arch;
  28 } GRUB_PACKED;
  29
  30 enum
  31   {
  32     GRUB_MACHO_CPUTYPE_IA32 = 0x00000007,
  33     GRUB_MACHO_CPUTYPE_AMD64 = 0x01000007
  34   };
  35
  36 #define GRUB_MACHO_FAT_MAGIC 0xcafebabe
  37 #define GRUB_MACHO_FAT_EFI_MAGIC 0x0ef1fab9U
  38
  39 typedef grub_uint32_t grub_macho_cpu_type_t;
  40 typedef grub_uint32_t grub_macho_cpu_subtype_t;
  41
  42 /* Architecture descriptor. Always in big-endian. */
  43 struct grub_macho_fat_arch
  44 {
  45   grub_macho_cpu_type_t cputype;
  46   grub_macho_cpu_subtype_t cpusubtype;
  47   grub_uint32_t offset;
  48   grub_uint32_t size;
  49   grub_uint32_t align;
  50 } GRUB_PACKED;
  51
  52 /* File header for 32-bit. Always in native-endian. */
  53 struct grub_macho_header32
  54 {
  55 #define GRUB_MACHO_MAGIC32 0xfeedface
  56   grub_uint32_t magic;
  57   grub_macho_cpu_type_t cputype;
  58   grub_macho_cpu_subtype_t cpusubtype;
  59   grub_uint32_t filetype;
  60   grub_uint32_t ncmds;
  61   grub_uint32_t sizeofcmds;
  62   grub_uint32_t flags;
  63 } GRUB_PACKED;
  64
  65 /* File header for 64-bit. Always in native-endian. */
  66 struct grub_macho_header64
  67 {
  68 #define GRUB_MACHO_MAGIC64 0xfeedfacf
  69   grub_uint32_t magic;
  70   grub_macho_cpu_type_t cputype;
  71   grub_macho_cpu_subtype_t cpusubtype;
  72   grub_uint32_t filetype;
  73   grub_uint32_t ncmds;
  74   grub_uint32_t sizeofcmds;
  75   grub_uint32_t flags;
  76   grub_uint32_t reserved;
  77 } GRUB_PACKED;
  78
  79 /* Common header of Mach-O commands. */
  80 struct grub_macho_cmd
  81 {
  82   grub_uint32_t cmd;
  83   grub_uint32_t cmdsize;
  84 } GRUB_PACKED;
  85
  86 typedef grub_uint32_t grub_macho_vmprot_t;
  87
  88 /* 32-bit segment command. */
  89 struct grub_macho_segment32
  90 {
  91 #define GRUB_MACHO_CMD_SEGMENT32  1
  92   grub_uint32_t cmd;
  93   grub_uint32_t cmdsize;
  94   grub_uint8_t segname[16];
  95   grub_uint32_t vmaddr;
  96   grub_uint32_t vmsize;
  97   grub_uint32_t fileoff;
  98   grub_uint32_t filesize;
  99   grub_macho_vmprot_t maxprot;
 100   grub_macho_vmprot_t initprot;
 101   grub_uint32_t nsects;
 102   grub_uint32_t flags;
 103 } GRUB_PACKED;
 104
 105 /* 64-bit segment command. */
 106 struct grub_macho_segment64
 107 {
 108 #define GRUB_MACHO_CMD_SEGMENT64  0x19
 109   grub_uint32_t cmd;
 110   grub_uint32_t cmdsize;
 111   grub_uint8_t segname[16];
 112   grub_uint64_t vmaddr;
 113   grub_uint64_t vmsize;
 114   grub_uint64_t fileoff;
 115   grub_uint64_t filesize;
 116   grub_macho_vmprot_t maxprot;
 117   grub_macho_vmprot_t initprot;
 118   grub_uint32_t nsects;
 119   grub_uint32_t flags;
 120 } GRUB_PACKED;
 121
 122 #define GRUB_MACHO_CMD_THREAD     5
 123
 124 struct grub_macho_lzss_header
 125 {
 126   char magic[8];
 127 #define GRUB_MACHO_LZSS_MAGIC "complzss"
 128   grub_uint32_t unused;
 129   grub_uint32_t uncompressed_size;
 130   grub_uint32_t compressed_size;
 131 };
 132
 133 /* Convenience union. What do we need to load to identify the file type. */
 134 union grub_macho_filestart
 135 {
 136   struct grub_macho_fat_header fat;
 137   struct grub_macho_header32 thin32;
 138   struct grub_macho_header64 thin64;
 139   struct grub_macho_lzss_header lzss;
 140 } GRUB_PACKED;
 141
 142 struct grub_macho_thread32
 143 {
 144   grub_uint32_t cmd;
 145   grub_uint32_t cmdsize;
 146   grub_uint8_t unknown1[48];
 147   grub_uint32_t entry_point;
 148   grub_uint8_t unknown2[20];
 149 } GRUB_PACKED;
 150
 151 struct grub_macho_thread64
 152 {
 153   grub_uint32_t cmd;
 154   grub_uint32_t cmdsize;
 155   grub_uint8_t unknown1[0x88];
 156   grub_uint64_t entry_point;
 157   grub_uint8_t unknown2[0x20];
 158 } GRUB_PACKED;
 159
 160 #define GRUB_MACHO_LZSS_OFFSET 0x180
 161
 162 grub_size_t
 163 grub_decompress_lzss (grub_uint8_t *dst, grub_uint8_t *dstend,
 164                       grub_uint8_t *src, grub_uint8_t *srcend);
 165
 166 #endif