1//===-- llvm/BinaryFormat/MachO.h - The MachO file format -------*- C++/-*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines manifest constants for the MachO object file format.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_BINARYFORMAT_MACHO_H
15#define LLVM_BINARYFORMAT_MACHO_H
16
17#include "llvm/Support/Compiler.h"
18#include "llvm/Support/DataTypes.h"
19#include "llvm/Support/Host.h"
20
21namespace llvm {
22namespace MachO {
23// Enums from <mach-o/loader.h>
24enum : uint32_t {
25  // Constants for the "magic" field in llvm::MachO::mach_header and
26  // llvm::MachO::mach_header_64
27  MH_MAGIC = 0xFEEDFACEu,
28  MH_CIGAM = 0xCEFAEDFEu,
29  MH_MAGIC_64 = 0xFEEDFACFu,
30  MH_CIGAM_64 = 0xCFFAEDFEu,
31  FAT_MAGIC = 0xCAFEBABEu,
32  FAT_CIGAM = 0xBEBAFECAu,
33  FAT_MAGIC_64 = 0xCAFEBABFu,
34  FAT_CIGAM_64 = 0xBFBAFECAu
35};
36
37enum HeaderFileType {
38  // Constants for the "filetype" field in llvm::MachO::mach_header and
39  // llvm::MachO::mach_header_64
40  MH_OBJECT = 0x1u,
41  MH_EXECUTE = 0x2u,
42  MH_FVMLIB = 0x3u,
43  MH_CORE = 0x4u,
44  MH_PRELOAD = 0x5u,
45  MH_DYLIB = 0x6u,
46  MH_DYLINKER = 0x7u,
47  MH_BUNDLE = 0x8u,
48  MH_DYLIB_STUB = 0x9u,
49  MH_DSYM = 0xAu,
50  MH_KEXT_BUNDLE = 0xBu
51};
52
53enum {
54  // Constant bits for the "flags" field in llvm::MachO::mach_header and
55  // llvm::MachO::mach_header_64
56  MH_NOUNDEFS = 0x00000001u,
57  MH_INCRLINK = 0x00000002u,
58  MH_DYLDLINK = 0x00000004u,
59  MH_BINDATLOAD = 0x00000008u,
60  MH_PREBOUND = 0x00000010u,
61  MH_SPLIT_SEGS = 0x00000020u,
62  MH_LAZY_INIT = 0x00000040u,
63  MH_TWOLEVEL = 0x00000080u,
64  MH_FORCE_FLAT = 0x00000100u,
65  MH_NOMULTIDEFS = 0x00000200u,
66  MH_NOFIXPREBINDING = 0x00000400u,
67  MH_PREBINDABLE = 0x00000800u,
68  MH_ALLMODSBOUND = 0x00001000u,
69  MH_SUBSECTIONS_VIA_SYMBOLS = 0x00002000u,
70  MH_CANONICAL = 0x00004000u,
71  MH_WEAK_DEFINES = 0x00008000u,
72  MH_BINDS_TO_WEAK = 0x00010000u,
73  MH_ALLOW_STACK_EXECUTION = 0x00020000u,
74  MH_ROOT_SAFE = 0x00040000u,
75  MH_SETUID_SAFE = 0x00080000u,
76  MH_NO_REEXPORTED_DYLIBS = 0x00100000u,
77  MH_PIE = 0x00200000u,
78  MH_DEAD_STRIPPABLE_DYLIB = 0x00400000u,
79  MH_HAS_TLV_DESCRIPTORS = 0x00800000u,
80  MH_NO_HEAP_EXECUTION = 0x01000000u,
81  MH_APP_EXTENSION_SAFE = 0x02000000u,
82  MH_NLIST_OUTOFSYNC_WITH_DYLDINFO = 0x04000000u
83};
84
85enum : uint32_t {
86  // Flags for the "cmd" field in llvm::MachO::load_command
87  LC_REQ_DYLD = 0x80000000u
88};
89
90#define HANDLE_LOAD_COMMAND(LCName, LCValue, LCStruct) LCName = LCValue,
91
92enum LoadCommandType : uint32_t {
93#include "llvm/BinaryFormat/MachO.def"
94};
95
96#undef HANDLE_LOAD_COMMAND
97
98enum : uint32_t {
99  // Constant bits for the "flags" field in llvm::MachO::segment_command
100  SG_HIGHVM = 0x1u,
101  SG_FVMLIB = 0x2u,
102  SG_NORELOC = 0x4u,
103  SG_PROTECTED_VERSION_1 = 0x8u,
104
105  // Constant masks for the "flags" field in llvm::MachO::section and
106  // llvm::MachO::section_64
107  SECTION_TYPE = 0x000000ffu,           // SECTION_TYPE
108  SECTION_ATTRIBUTES = 0xffffff00u,     // SECTION_ATTRIBUTES
109  SECTION_ATTRIBUTES_USR = 0xff000000u, // SECTION_ATTRIBUTES_USR
110  SECTION_ATTRIBUTES_SYS = 0x00ffff00u  // SECTION_ATTRIBUTES_SYS
111};
112
113/// These are the section type and attributes fields.  A MachO section can
114/// have only one Type, but can have any of the attributes specified.
115enum SectionType : uint32_t {
116  // Constant masks for the "flags[7:0]" field in llvm::MachO::section and
117  // llvm::MachO::section_64 (mask "flags" with SECTION_TYPE)
118
119  /// S_REGULAR - Regular section.
120  S_REGULAR = 0x00u,
121  /// S_ZEROFILL - Zero fill on demand section.
122  S_ZEROFILL = 0x01u,
123  /// S_CSTRING_LITERALS - Section with literal C strings.
124  S_CSTRING_LITERALS = 0x02u,
125  /// S_4BYTE_LITERALS - Section with 4 byte literals.
126  S_4BYTE_LITERALS = 0x03u,
127  /// S_8BYTE_LITERALS - Section with 8 byte literals.
128  S_8BYTE_LITERALS = 0x04u,
129  /// S_LITERAL_POINTERS - Section with pointers to literals.
130  S_LITERAL_POINTERS = 0x05u,
131  /// S_NON_LAZY_SYMBOL_POINTERS - Section with non-lazy symbol pointers.
132  S_NON_LAZY_SYMBOL_POINTERS = 0x06u,
133  /// S_LAZY_SYMBOL_POINTERS - Section with lazy symbol pointers.
134  S_LAZY_SYMBOL_POINTERS = 0x07u,
135  /// S_SYMBOL_STUBS - Section with symbol stubs, byte size of stub in
136  /// the Reserved2 field.
137  S_SYMBOL_STUBS = 0x08u,
138  /// S_MOD_INIT_FUNC_POINTERS - Section with only function pointers for
139  /// initialization.
140  S_MOD_INIT_FUNC_POINTERS = 0x09u,
141  /// S_MOD_TERM_FUNC_POINTERS - Section with only function pointers for
142  /// termination.
143  S_MOD_TERM_FUNC_POINTERS = 0x0au,
144  /// S_COALESCED - Section contains symbols that are to be coalesced.
145  S_COALESCED = 0x0bu,
146  /// S_GB_ZEROFILL - Zero fill on demand section (that can be larger than 4
147  /// gigabytes).
148  S_GB_ZEROFILL = 0x0cu,
149  /// S_INTERPOSING - Section with only pairs of function pointers for
150  /// interposing.
151  S_INTERPOSING = 0x0du,
152  /// S_16BYTE_LITERALS - Section with only 16 byte literals.
153  S_16BYTE_LITERALS = 0x0eu,
154  /// S_DTRACE_DOF - Section contains DTrace Object Format.
155  S_DTRACE_DOF = 0x0fu,
156  /// S_LAZY_DYLIB_SYMBOL_POINTERS - Section with lazy symbol pointers to
157  /// lazy loaded dylibs.
158  S_LAZY_DYLIB_SYMBOL_POINTERS = 0x10u,
159  /// S_THREAD_LOCAL_REGULAR - Thread local data section.
160  S_THREAD_LOCAL_REGULAR = 0x11u,
161  /// S_THREAD_LOCAL_ZEROFILL - Thread local zerofill section.
162  S_THREAD_LOCAL_ZEROFILL = 0x12u,
163  /// S_THREAD_LOCAL_VARIABLES - Section with thread local variable
164  /// structure data.
165  S_THREAD_LOCAL_VARIABLES = 0x13u,
166  /// S_THREAD_LOCAL_VARIABLE_POINTERS - Section with pointers to thread
167  /// local structures.
168  S_THREAD_LOCAL_VARIABLE_POINTERS = 0x14u,
169  /// S_THREAD_LOCAL_INIT_FUNCTION_POINTERS - Section with thread local
170  /// variable initialization pointers to functions.
171  S_THREAD_LOCAL_INIT_FUNCTION_POINTERS = 0x15u,
172
173  LAST_KNOWN_SECTION_TYPE = S_THREAD_LOCAL_INIT_FUNCTION_POINTERS
174};
175
176enum : uint32_t {
177  // Constant masks for the "flags[31:24]" field in llvm::MachO::section and
178  // llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_USR)
179
180  /// S_ATTR_PURE_INSTRUCTIONS - Section contains only true machine
181  /// instructions.
182  S_ATTR_PURE_INSTRUCTIONS = 0x80000000u,
183  /// S_ATTR_NO_TOC - Section contains coalesced symbols that are not to be
184  /// in a ranlib table of contents.
185  S_ATTR_NO_TOC = 0x40000000u,
186  /// S_ATTR_STRIP_STATIC_SYMS - Ok to strip static symbols in this section
187  /// in files with the MY_DYLDLINK flag.
188  S_ATTR_STRIP_STATIC_SYMS = 0x20000000u,
189  /// S_ATTR_NO_DEAD_STRIP - No dead stripping.
190  S_ATTR_NO_DEAD_STRIP = 0x10000000u,
191  /// S_ATTR_LIVE_SUPPORT - Blocks are live if they reference live blocks.
192  S_ATTR_LIVE_SUPPORT = 0x08000000u,
193  /// S_ATTR_SELF_MODIFYING_CODE - Used with i386 code stubs written on by
194  /// dyld.
195  S_ATTR_SELF_MODIFYING_CODE = 0x04000000u,
196  /// S_ATTR_DEBUG - A debug section.
197  S_ATTR_DEBUG = 0x02000000u,
198
199  // Constant masks for the "flags[23:8]" field in llvm::MachO::section and
200  // llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_SYS)
201
202  /// S_ATTR_SOME_INSTRUCTIONS - Section contains some machine instructions.
203  S_ATTR_SOME_INSTRUCTIONS = 0x00000400u,
204  /// S_ATTR_EXT_RELOC - Section has external relocation entries.
205  S_ATTR_EXT_RELOC = 0x00000200u,
206  /// S_ATTR_LOC_RELOC - Section has local relocation entries.
207  S_ATTR_LOC_RELOC = 0x00000100u,
208
209  // Constant masks for the value of an indirect symbol in an indirect
210  // symbol table
211  INDIRECT_SYMBOL_LOCAL = 0x80000000u,
212  INDIRECT_SYMBOL_ABS = 0x40000000u
213};
214
215enum DataRegionType {
216  // Constants for the "kind" field in a data_in_code_entry structure
217  DICE_KIND_DATA = 1u,
218  DICE_KIND_JUMP_TABLE8 = 2u,
219  DICE_KIND_JUMP_TABLE16 = 3u,
220  DICE_KIND_JUMP_TABLE32 = 4u,
221  DICE_KIND_ABS_JUMP_TABLE32 = 5u
222};
223
224enum RebaseType {
225  REBASE_TYPE_POINTER = 1u,
226  REBASE_TYPE_TEXT_ABSOLUTE32 = 2u,
227  REBASE_TYPE_TEXT_PCREL32 = 3u
228};
229
230enum { REBASE_OPCODE_MASK = 0xF0u, REBASE_IMMEDIATE_MASK = 0x0Fu };
231
232enum RebaseOpcode {
233  REBASE_OPCODE_DONE = 0x00u,
234  REBASE_OPCODE_SET_TYPE_IMM = 0x10u,
235  REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB = 0x20u,
236  REBASE_OPCODE_ADD_ADDR_ULEB = 0x30u,
237  REBASE_OPCODE_ADD_ADDR_IMM_SCALED = 0x40u,
238  REBASE_OPCODE_DO_REBASE_IMM_TIMES = 0x50u,
239  REBASE_OPCODE_DO_REBASE_ULEB_TIMES = 0x60u,
240  REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB = 0x70u,
241  REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB = 0x80u
242};
243
244enum BindType {
245  BIND_TYPE_POINTER = 1u,
246  BIND_TYPE_TEXT_ABSOLUTE32 = 2u,
247  BIND_TYPE_TEXT_PCREL32 = 3u
248};
249
250enum BindSpecialDylib {
251  BIND_SPECIAL_DYLIB_SELF = 0,
252  BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE = -1,
253  BIND_SPECIAL_DYLIB_FLAT_LOOKUP = -2
254};
255
256enum {
257  BIND_SYMBOL_FLAGS_WEAK_IMPORT = 0x1u,
258  BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION = 0x8u,
259
260  BIND_OPCODE_MASK = 0xF0u,
261  BIND_IMMEDIATE_MASK = 0x0Fu
262};
263
264enum BindOpcode {
265  BIND_OPCODE_DONE = 0x00u,
266  BIND_OPCODE_SET_DYLIB_ORDINAL_IMM = 0x10u,
267  BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB = 0x20u,
268  BIND_OPCODE_SET_DYLIB_SPECIAL_IMM = 0x30u,
269  BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM = 0x40u,
270  BIND_OPCODE_SET_TYPE_IMM = 0x50u,
271  BIND_OPCODE_SET_ADDEND_SLEB = 0x60u,
272  BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB = 0x70u,
273  BIND_OPCODE_ADD_ADDR_ULEB = 0x80u,
274  BIND_OPCODE_DO_BIND = 0x90u,
275  BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB = 0xA0u,
276  BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED = 0xB0u,
277  BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB = 0xC0u
278};
279
280enum {
281  EXPORT_SYMBOL_FLAGS_KIND_MASK = 0x03u,
282  EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION = 0x04u,
283  EXPORT_SYMBOL_FLAGS_REEXPORT = 0x08u,
284  EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER = 0x10u
285};
286
287enum ExportSymbolKind {
288  EXPORT_SYMBOL_FLAGS_KIND_REGULAR = 0x00u,
289  EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL = 0x01u,
290  EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE = 0x02u
291};
292
293enum {
294  // Constant masks for the "n_type" field in llvm::MachO::nlist and
295  // llvm::MachO::nlist_64
296  N_STAB = 0xe0,
297  N_PEXT = 0x10,
298  N_TYPE = 0x0e,
299  N_EXT = 0x01
300};
301
302enum NListType : uint8_t {
303  // Constants for the "n_type & N_TYPE" llvm::MachO::nlist and
304  // llvm::MachO::nlist_64
305  N_UNDF = 0x0u,
306  N_ABS = 0x2u,
307  N_SECT = 0xeu,
308  N_PBUD = 0xcu,
309  N_INDR = 0xau
310};
311
312enum SectionOrdinal {
313  // Constants for the "n_sect" field in llvm::MachO::nlist and
314  // llvm::MachO::nlist_64
315  NO_SECT = 0u,
316  MAX_SECT = 0xffu
317};
318
319enum {
320  // Constant masks for the "n_desc" field in llvm::MachO::nlist and
321  // llvm::MachO::nlist_64
322  // The low 3 bits are the for the REFERENCE_TYPE.
323  REFERENCE_TYPE = 0x7,
324  REFERENCE_FLAG_UNDEFINED_NON_LAZY = 0,
325  REFERENCE_FLAG_UNDEFINED_LAZY = 1,
326  REFERENCE_FLAG_DEFINED = 2,
327  REFERENCE_FLAG_PRIVATE_DEFINED = 3,
328  REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY = 4,
329  REFERENCE_FLAG_PRIVATE_UNDEFINED_LAZY = 5,
330  // Flag bits (some overlap with the library ordinal bits).
331  N_ARM_THUMB_DEF = 0x0008u,
332  REFERENCED_DYNAMICALLY = 0x0010u,
333  N_NO_DEAD_STRIP = 0x0020u,
334  N_WEAK_REF = 0x0040u,
335  N_WEAK_DEF = 0x0080u,
336  N_SYMBOL_RESOLVER = 0x0100u,
337  N_ALT_ENTRY = 0x0200u,
338  // For undefined symbols coming from libraries, see GET_LIBRARY_ORDINAL()
339  // as these are in the top 8 bits.
340  SELF_LIBRARY_ORDINAL = 0x0,
341  MAX_LIBRARY_ORDINAL = 0xfd,
342  DYNAMIC_LOOKUP_ORDINAL = 0xfe,
343  EXECUTABLE_ORDINAL = 0xff
344};
345
346enum StabType {
347  // Constant values for the "n_type" field in llvm::MachO::nlist and
348  // llvm::MachO::nlist_64 when "(n_type & N_STAB) != 0"
349  N_GSYM = 0x20u,
350  N_FNAME = 0x22u,
351  N_FUN = 0x24u,
352  N_STSYM = 0x26u,
353  N_LCSYM = 0x28u,
354  N_BNSYM = 0x2Eu,
355  N_PC = 0x30u,
356  N_AST = 0x32u,
357  N_OPT = 0x3Cu,
358  N_RSYM = 0x40u,
359  N_SLINE = 0x44u,
360  N_ENSYM = 0x4Eu,
361  N_SSYM = 0x60u,
362  N_SO = 0x64u,
363  N_OSO = 0x66u,
364  N_LSYM = 0x80u,
365  N_BINCL = 0x82u,
366  N_SOL = 0x84u,
367  N_PARAMS = 0x86u,
368  N_VERSION = 0x88u,
369  N_OLEVEL = 0x8Au,
370  N_PSYM = 0xA0u,
371  N_EINCL = 0xA2u,
372  N_ENTRY = 0xA4u,
373  N_LBRAC = 0xC0u,
374  N_EXCL = 0xC2u,
375  N_RBRAC = 0xE0u,
376  N_BCOMM = 0xE2u,
377  N_ECOMM = 0xE4u,
378  N_ECOML = 0xE8u,
379  N_LENG = 0xFEu
380};
381
382enum : uint32_t {
383  // Constant values for the r_symbolnum field in an
384  // llvm::MachO::relocation_info structure when r_extern is 0.
385  R_ABS = 0,
386
387  // Constant bits for the r_address field in an
388  // llvm::MachO::relocation_info structure.
389  R_SCATTERED = 0x80000000
390};
391
392enum RelocationInfoType {
393  // Constant values for the r_type field in an
394  // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
395  // structure.
396  GENERIC_RELOC_VANILLA = 0,
397  GENERIC_RELOC_PAIR = 1,
398  GENERIC_RELOC_SECTDIFF = 2,
399  GENERIC_RELOC_PB_LA_PTR = 3,
400  GENERIC_RELOC_LOCAL_SECTDIFF = 4,
401  GENERIC_RELOC_TLV = 5,
402
403  // Constant values for the r_type field in a PowerPC architecture
404  // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
405  // structure.
406  PPC_RELOC_VANILLA = GENERIC_RELOC_VANILLA,
407  PPC_RELOC_PAIR = GENERIC_RELOC_PAIR,
408  PPC_RELOC_BR14 = 2,
409  PPC_RELOC_BR24 = 3,
410  PPC_RELOC_HI16 = 4,
411  PPC_RELOC_LO16 = 5,
412  PPC_RELOC_HA16 = 6,
413  PPC_RELOC_LO14 = 7,
414  PPC_RELOC_SECTDIFF = 8,
415  PPC_RELOC_PB_LA_PTR = 9,
416  PPC_RELOC_HI16_SECTDIFF = 10,
417  PPC_RELOC_LO16_SECTDIFF = 11,
418  PPC_RELOC_HA16_SECTDIFF = 12,
419  PPC_RELOC_JBSR = 13,
420  PPC_RELOC_LO14_SECTDIFF = 14,
421  PPC_RELOC_LOCAL_SECTDIFF = 15,
422
423  // Constant values for the r_type field in an ARM architecture
424  // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
425  // structure.
426  ARM_RELOC_VANILLA = GENERIC_RELOC_VANILLA,
427  ARM_RELOC_PAIR = GENERIC_RELOC_PAIR,
428  ARM_RELOC_SECTDIFF = GENERIC_RELOC_SECTDIFF,
429  ARM_RELOC_LOCAL_SECTDIFF = 3,
430  ARM_RELOC_PB_LA_PTR = 4,
431  ARM_RELOC_BR24 = 5,
432  ARM_THUMB_RELOC_BR22 = 6,
433  ARM_THUMB_32BIT_BRANCH = 7, // obsolete
434  ARM_RELOC_HALF = 8,
435  ARM_RELOC_HALF_SECTDIFF = 9,
436
437  // Constant values for the r_type field in an ARM64 architecture
438  // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
439  // structure.
440
441  // For pointers.
442  ARM64_RELOC_UNSIGNED = 0,
443  // Must be followed by an ARM64_RELOC_UNSIGNED
444  ARM64_RELOC_SUBTRACTOR = 1,
445  // A B/BL instruction with 26-bit displacement.
446  ARM64_RELOC_BRANCH26 = 2,
447  // PC-rel distance to page of target.
448  ARM64_RELOC_PAGE21 = 3,
449  // Offset within page, scaled by r_length.
450  ARM64_RELOC_PAGEOFF12 = 4,
451  // PC-rel distance to page of GOT slot.
452  ARM64_RELOC_GOT_LOAD_PAGE21 = 5,
453  // Offset within page of GOT slot, scaled by r_length.
454  ARM64_RELOC_GOT_LOAD_PAGEOFF12 = 6,
455  // For pointers to GOT slots.
456  ARM64_RELOC_POINTER_TO_GOT = 7,
457  // PC-rel distance to page of TLVP slot.
458  ARM64_RELOC_TLVP_LOAD_PAGE21 = 8,
459  // Offset within page of TLVP slot, scaled by r_length.
460  ARM64_RELOC_TLVP_LOAD_PAGEOFF12 = 9,
461  // Must be followed by ARM64_RELOC_PAGE21 or ARM64_RELOC_PAGEOFF12.
462  ARM64_RELOC_ADDEND = 10,
463
464  // Constant values for the r_type field in an x86_64 architecture
465  // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
466  // structure
467  X86_64_RELOC_UNSIGNED = 0,
468  X86_64_RELOC_SIGNED = 1,
469  X86_64_RELOC_BRANCH = 2,
470  X86_64_RELOC_GOT_LOAD = 3,
471  X86_64_RELOC_GOT = 4,
472  X86_64_RELOC_SUBTRACTOR = 5,
473  X86_64_RELOC_SIGNED_1 = 6,
474  X86_64_RELOC_SIGNED_2 = 7,
475  X86_64_RELOC_SIGNED_4 = 8,
476  X86_64_RELOC_TLV = 9
477};
478
479// Values for segment_command.initprot.
480// From <mach/vm_prot.h>
481enum { VM_PROT_READ = 0x1, VM_PROT_WRITE = 0x2, VM_PROT_EXECUTE = 0x4 };
482
483// Values for platform field in build_version_command.
484enum {
485  PLATFORM_MACOS = 1,
486  PLATFORM_IOS = 2,
487  PLATFORM_TVOS = 3,
488  PLATFORM_WATCHOS = 4,
489  PLATFORM_BRIDGEOS = 5
490};
491
492// Values for tools enum in build_tool_version.
493enum { TOOL_CLANG = 1, TOOL_SWIFT = 2, TOOL_LD = 3 };
494
495// Structs from <mach-o/loader.h>
496
497struct mach_header {
498  uint32_t magic;
499  uint32_t cputype;
500  uint32_t cpusubtype;
501  uint32_t filetype;
502  uint32_t ncmds;
503  uint32_t sizeofcmds;
504  uint32_t flags;
505};
506
507struct mach_header_64 {
508  uint32_t magic;
509  uint32_t cputype;
510  uint32_t cpusubtype;
511  uint32_t filetype;
512  uint32_t ncmds;
513  uint32_t sizeofcmds;
514  uint32_t flags;
515  uint32_t reserved;
516};
517
518struct load_command {
519  uint32_t cmd;
520  uint32_t cmdsize;
521};
522
523struct segment_command {
524  uint32_t cmd;
525  uint32_t cmdsize;
526  char segname[16];
527  uint32_t vmaddr;
528  uint32_t vmsize;
529  uint32_t fileoff;
530  uint32_t filesize;
531  uint32_t maxprot;
532  uint32_t initprot;
533  uint32_t nsects;
534  uint32_t flags;
535};
536
537struct segment_command_64 {
538  uint32_t cmd;
539  uint32_t cmdsize;
540  char segname[16];
541  uint64_t vmaddr;
542  uint64_t vmsize;
543  uint64_t fileoff;
544  uint64_t filesize;
545  uint32_t maxprot;
546  uint32_t initprot;
547  uint32_t nsects;
548  uint32_t flags;
549};
550
551struct section {
552  char sectname[16];
553  char segname[16];
554  uint32_t addr;
555  uint32_t size;
556  uint32_t offset;
557  uint32_t align;
558  uint32_t reloff;
559  uint32_t nreloc;
560  uint32_t flags;
561  uint32_t reserved1;
562  uint32_t reserved2;
563};
564
565struct section_64 {
566  char sectname[16];
567  char segname[16];
568  uint64_t addr;
569  uint64_t size;
570  uint32_t offset;
571  uint32_t align;
572  uint32_t reloff;
573  uint32_t nreloc;
574  uint32_t flags;
575  uint32_t reserved1;
576  uint32_t reserved2;
577  uint32_t reserved3;
578};
579
580struct fvmlib {
581  uint32_t name;
582  uint32_t minor_version;
583  uint32_t header_addr;
584};
585
586// The fvmlib_command is obsolete and no longer supported.
587struct fvmlib_command {
588  uint32_t cmd;
589  uint32_t cmdsize;
590  struct fvmlib fvmlib;
591};
592
593struct dylib {
594  uint32_t name;
595  uint32_t timestamp;
596  uint32_t current_version;
597  uint32_t compatibility_version;
598};
599
600struct dylib_command {
601  uint32_t cmd;
602  uint32_t cmdsize;
603  struct dylib dylib;
604};
605
606struct sub_framework_command {
607  uint32_t cmd;
608  uint32_t cmdsize;
609  uint32_t umbrella;
610};
611
612struct sub_client_command {
613  uint32_t cmd;
614  uint32_t cmdsize;
615  uint32_t client;
616};
617
618struct sub_umbrella_command {
619  uint32_t cmd;
620  uint32_t cmdsize;
621  uint32_t sub_umbrella;
622};
623
624struct sub_library_command {
625  uint32_t cmd;
626  uint32_t cmdsize;
627  uint32_t sub_library;
628};
629
630// The prebound_dylib_command is obsolete and no longer supported.
631struct prebound_dylib_command {
632  uint32_t cmd;
633  uint32_t cmdsize;
634  uint32_t name;
635  uint32_t nmodules;
636  uint32_t linked_modules;
637};
638
639struct dylinker_command {
640  uint32_t cmd;
641  uint32_t cmdsize;
642  uint32_t name;
643};
644
645struct thread_command {
646  uint32_t cmd;
647  uint32_t cmdsize;
648};
649
650struct routines_command {
651  uint32_t cmd;
652  uint32_t cmdsize;
653  uint32_t init_address;
654  uint32_t init_module;
655  uint32_t reserved1;
656  uint32_t reserved2;
657  uint32_t reserved3;
658  uint32_t reserved4;
659  uint32_t reserved5;
660  uint32_t reserved6;
661};
662
663struct routines_command_64 {
664  uint32_t cmd;
665  uint32_t cmdsize;
666  uint64_t init_address;
667  uint64_t init_module;
668  uint64_t reserved1;
669  uint64_t reserved2;
670  uint64_t reserved3;
671  uint64_t reserved4;
672  uint64_t reserved5;
673  uint64_t reserved6;
674};
675
676struct symtab_command {
677  uint32_t cmd;
678  uint32_t cmdsize;
679  uint32_t symoff;
680  uint32_t nsyms;
681  uint32_t stroff;
682  uint32_t strsize;
683};
684
685struct dysymtab_command {
686  uint32_t cmd;
687  uint32_t cmdsize;
688  uint32_t ilocalsym;
689  uint32_t nlocalsym;
690  uint32_t iextdefsym;
691  uint32_t nextdefsym;
692  uint32_t iundefsym;
693  uint32_t nundefsym;
694  uint32_t tocoff;
695  uint32_t ntoc;
696  uint32_t modtaboff;
697  uint32_t nmodtab;
698  uint32_t extrefsymoff;
699  uint32_t nextrefsyms;
700  uint32_t indirectsymoff;
701  uint32_t nindirectsyms;
702  uint32_t extreloff;
703  uint32_t nextrel;
704  uint32_t locreloff;
705  uint32_t nlocrel;
706};
707
708struct dylib_table_of_contents {
709  uint32_t symbol_index;
710  uint32_t module_index;
711};
712
713struct dylib_module {
714  uint32_t module_name;
715  uint32_t iextdefsym;
716  uint32_t nextdefsym;
717  uint32_t irefsym;
718  uint32_t nrefsym;
719  uint32_t ilocalsym;
720  uint32_t nlocalsym;
721  uint32_t iextrel;
722  uint32_t nextrel;
723  uint32_t iinit_iterm;
724  uint32_t ninit_nterm;
725  uint32_t objc_module_info_addr;
726  uint32_t objc_module_info_size;
727};
728
729struct dylib_module_64 {
730  uint32_t module_name;
731  uint32_t iextdefsym;
732  uint32_t nextdefsym;
733  uint32_t irefsym;
734  uint32_t nrefsym;
735  uint32_t ilocalsym;
736  uint32_t nlocalsym;
737  uint32_t iextrel;
738  uint32_t nextrel;
739  uint32_t iinit_iterm;
740  uint32_t ninit_nterm;
741  uint32_t objc_module_info_size;
742  uint64_t objc_module_info_addr;
743};
744
745struct dylib_reference {
746  uint32_t isym : 24, flags : 8;
747};
748
749// The twolevel_hints_command is obsolete and no longer supported.
750struct twolevel_hints_command {
751  uint32_t cmd;
752  uint32_t cmdsize;
753  uint32_t offset;
754  uint32_t nhints;
755};
756
757// The twolevel_hints_command is obsolete and no longer supported.
758struct twolevel_hint {
759  uint32_t isub_image : 8, itoc : 24;
760};
761
762// The prebind_cksum_command is obsolete and no longer supported.
763struct prebind_cksum_command {
764  uint32_t cmd;
765  uint32_t cmdsize;
766  uint32_t cksum;
767};
768
769struct uuid_command {
770  uint32_t cmd;
771  uint32_t cmdsize;
772  uint8_t uuid[16];
773};
774
775struct rpath_command {
776  uint32_t cmd;
777  uint32_t cmdsize;
778  uint32_t path;
779};
780
781struct linkedit_data_command {
782  uint32_t cmd;
783  uint32_t cmdsize;
784  uint32_t dataoff;
785  uint32_t datasize;
786};
787
788struct data_in_code_entry {
789  uint32_t offset;
790  uint16_t length;
791  uint16_t kind;
792};
793
794struct source_version_command {
795  uint32_t cmd;
796  uint32_t cmdsize;
797  uint64_t version;
798};
799
800struct encryption_info_command {
801  uint32_t cmd;
802  uint32_t cmdsize;
803  uint32_t cryptoff;
804  uint32_t cryptsize;
805  uint32_t cryptid;
806};
807
808struct encryption_info_command_64 {
809  uint32_t cmd;
810  uint32_t cmdsize;
811  uint32_t cryptoff;
812  uint32_t cryptsize;
813  uint32_t cryptid;
814  uint32_t pad;
815};
816
817struct version_min_command {
818  uint32_t cmd;     // LC_VERSION_MIN_MACOSX or
819                    // LC_VERSION_MIN_IPHONEOS
820  uint32_t cmdsize; // sizeof(struct version_min_command)
821  uint32_t version; // X.Y.Z is encoded in nibbles xxxx.yy.zz
822  uint32_t sdk;     // X.Y.Z is encoded in nibbles xxxx.yy.zz
823};
824
825struct note_command {
826  uint32_t cmd;        // LC_NOTE
827  uint32_t cmdsize;    // sizeof(struct note_command)
828  char data_owner[16]; // owner name for this LC_NOTE
829  uint64_t offset;     // file offset of this data
830  uint64_t size;       // length of data region
831};
832
833struct build_tool_version {
834  uint32_t tool;    // enum for the tool
835  uint32_t version; // version of the tool
836};
837
838struct build_version_command {
839  uint32_t cmd;      // LC_BUILD_VERSION
840  uint32_t cmdsize;  // sizeof(struct build_version_command) +
841                     // ntools * sizeof(struct build_tool_version)
842  uint32_t platform; // platform
843  uint32_t minos;    // X.Y.Z is encoded in nibbles xxxx.yy.zz
844  uint32_t sdk;      // X.Y.Z is encoded in nibbles xxxx.yy.zz
845  uint32_t ntools;   // number of tool entries following this
846};
847
848struct dyld_info_command {
849  uint32_t cmd;
850  uint32_t cmdsize;
851  uint32_t rebase_off;
852  uint32_t rebase_size;
853  uint32_t bind_off;
854  uint32_t bind_size;
855  uint32_t weak_bind_off;
856  uint32_t weak_bind_size;
857  uint32_t lazy_bind_off;
858  uint32_t lazy_bind_size;
859  uint32_t export_off;
860  uint32_t export_size;
861};
862
863struct linker_option_command {
864  uint32_t cmd;
865  uint32_t cmdsize;
866  uint32_t count;
867};
868
869// The symseg_command is obsolete and no longer supported.
870struct symseg_command {
871  uint32_t cmd;
872  uint32_t cmdsize;
873  uint32_t offset;
874  uint32_t size;
875};
876
877// The ident_command is obsolete and no longer supported.
878struct ident_command {
879  uint32_t cmd;
880  uint32_t cmdsize;
881};
882
883// The fvmfile_command is obsolete and no longer supported.
884struct fvmfile_command {
885  uint32_t cmd;
886  uint32_t cmdsize;
887  uint32_t name;
888  uint32_t header_addr;
889};
890
891struct tlv_descriptor_32 {
892  uint32_t thunk;
893  uint32_t key;
894  uint32_t offset;
895};
896
897struct tlv_descriptor_64 {
898  uint64_t thunk;
899  uint64_t key;
900  uint64_t offset;
901};
902
903struct tlv_descriptor {
904  uintptr_t thunk;
905  uintptr_t key;
906  uintptr_t offset;
907};
908
909struct entry_point_command {
910  uint32_t cmd;
911  uint32_t cmdsize;
912  uint64_t entryoff;
913  uint64_t stacksize;
914};
915
916// Structs from <mach-o/fat.h>
917struct fat_header {
918  uint32_t magic;
919  uint32_t nfat_arch;
920};
921
922struct fat_arch {
923  uint32_t cputype;
924  uint32_t cpusubtype;
925  uint32_t offset;
926  uint32_t size;
927  uint32_t align;
928};
929
930struct fat_arch_64 {
931  uint32_t cputype;
932  uint32_t cpusubtype;
933  uint64_t offset;
934  uint64_t size;
935  uint32_t align;
936  uint32_t reserved;
937};
938
939// Structs from <mach-o/reloc.h>
940struct relocation_info {
941  int32_t r_address;
942  uint32_t r_symbolnum : 24, r_pcrel : 1, r_length : 2, r_extern : 1,
943      r_type : 4;
944};
945
946struct scattered_relocation_info {
947#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && (BYTE_ORDER == BIG_ENDIAN)
948  uint32_t r_scattered : 1, r_pcrel : 1, r_length : 2, r_type : 4,
949      r_address : 24;
950#else
951  uint32_t r_address : 24, r_type : 4, r_length : 2, r_pcrel : 1,
952      r_scattered : 1;
953#endif
954  int32_t r_value;
955};
956
957// Structs NOT from <mach-o/reloc.h>, but that make LLVM's life easier
958struct any_relocation_info {
959  uint32_t r_word0, r_word1;
960};
961
962// Structs from <mach-o/nlist.h>
963struct nlist_base {
964  uint32_t n_strx;
965  uint8_t n_type;
966  uint8_t n_sect;
967  uint16_t n_desc;
968};
969
970struct nlist {
971  uint32_t n_strx;
972  uint8_t n_type;
973  uint8_t n_sect;
974  int16_t n_desc;
975  uint32_t n_value;
976};
977
978struct nlist_64 {
979  uint32_t n_strx;
980  uint8_t n_type;
981  uint8_t n_sect;
982  uint16_t n_desc;
983  uint64_t n_value;
984};
985
986// Byte order swapping functions for MachO structs
987
988inline void swapStruct(fat_header &mh) {
989  sys::swapByteOrder(mh.magic);
990  sys::swapByteOrder(mh.nfat_arch);
991}
992
993inline void swapStruct(fat_arch &mh) {
994  sys::swapByteOrder(mh.cputype);
995  sys::swapByteOrder(mh.cpusubtype);
996  sys::swapByteOrder(mh.offset);
997  sys::swapByteOrder(mh.size);
998  sys::swapByteOrder(mh.align);
999}
1000
1001inline void swapStruct(fat_arch_64 &mh) {
1002  sys::swapByteOrder(mh.cputype);
1003  sys::swapByteOrder(mh.cpusubtype);
1004  sys::swapByteOrder(mh.offset);
1005  sys::swapByteOrder(mh.size);
1006  sys::swapByteOrder(mh.align);
1007  sys::swapByteOrder(mh.reserved);
1008}
1009
1010inline void swapStruct(mach_header &mh) {
1011  sys::swapByteOrder(mh.magic);
1012  sys::swapByteOrder(mh.cputype);
1013  sys::swapByteOrder(mh.cpusubtype);
1014  sys::swapByteOrder(mh.filetype);
1015  sys::swapByteOrder(mh.ncmds);
1016  sys::swapByteOrder(mh.sizeofcmds);
1017  sys::swapByteOrder(mh.flags);
1018}
1019
1020inline void swapStruct(mach_header_64 &H) {
1021  sys::swapByteOrder(H.magic);
1022  sys::swapByteOrder(H.cputype);
1023  sys::swapByteOrder(H.cpusubtype);
1024  sys::swapByteOrder(H.filetype);
1025  sys::swapByteOrder(H.ncmds);
1026  sys::swapByteOrder(H.sizeofcmds);
1027  sys::swapByteOrder(H.flags);
1028  sys::swapByteOrder(H.reserved);
1029}
1030
1031inline void swapStruct(load_command &lc) {
1032  sys::swapByteOrder(lc.cmd);
1033  sys::swapByteOrder(lc.cmdsize);
1034}
1035
1036inline void swapStruct(symtab_command &lc) {
1037  sys::swapByteOrder(lc.cmd);
1038  sys::swapByteOrder(lc.cmdsize);
1039  sys::swapByteOrder(lc.symoff);
1040  sys::swapByteOrder(lc.nsyms);
1041  sys::swapByteOrder(lc.stroff);
1042  sys::swapByteOrder(lc.strsize);
1043}
1044
1045inline void swapStruct(segment_command_64 &seg) {
1046  sys::swapByteOrder(seg.cmd);
1047  sys::swapByteOrder(seg.cmdsize);
1048  sys::swapByteOrder(seg.vmaddr);
1049  sys::swapByteOrder(seg.vmsize);
1050  sys::swapByteOrder(seg.fileoff);
1051  sys::swapByteOrder(seg.filesize);
1052  sys::swapByteOrder(seg.maxprot);
1053  sys::swapByteOrder(seg.initprot);
1054  sys::swapByteOrder(seg.nsects);
1055  sys::swapByteOrder(seg.flags);
1056}
1057
1058inline void swapStruct(segment_command &seg) {
1059  sys::swapByteOrder(seg.cmd);
1060  sys::swapByteOrder(seg.cmdsize);
1061  sys::swapByteOrder(seg.vmaddr);
1062  sys::swapByteOrder(seg.vmsize);
1063  sys::swapByteOrder(seg.fileoff);
1064  sys::swapByteOrder(seg.filesize);
1065  sys::swapByteOrder(seg.maxprot);
1066  sys::swapByteOrder(seg.initprot);
1067  sys::swapByteOrder(seg.nsects);
1068  sys::swapByteOrder(seg.flags);
1069}
1070
1071inline void swapStruct(section_64 &sect) {
1072  sys::swapByteOrder(sect.addr);
1073  sys::swapByteOrder(sect.size);
1074  sys::swapByteOrder(sect.offset);
1075  sys::swapByteOrder(sect.align);
1076  sys::swapByteOrder(sect.reloff);
1077  sys::swapByteOrder(sect.nreloc);
1078  sys::swapByteOrder(sect.flags);
1079  sys::swapByteOrder(sect.reserved1);
1080  sys::swapByteOrder(sect.reserved2);
1081}
1082
1083inline void swapStruct(section &sect) {
1084  sys::swapByteOrder(sect.addr);
1085  sys::swapByteOrder(sect.size);
1086  sys::swapByteOrder(sect.offset);
1087  sys::swapByteOrder(sect.align);
1088  sys::swapByteOrder(sect.reloff);
1089  sys::swapByteOrder(sect.nreloc);
1090  sys::swapByteOrder(sect.flags);
1091  sys::swapByteOrder(sect.reserved1);
1092  sys::swapByteOrder(sect.reserved2);
1093}
1094
1095inline void swapStruct(dyld_info_command &info) {
1096  sys::swapByteOrder(info.cmd);
1097  sys::swapByteOrder(info.cmdsize);
1098  sys::swapByteOrder(info.rebase_off);
1099  sys::swapByteOrder(info.rebase_size);
1100  sys::swapByteOrder(info.bind_off);
1101  sys::swapByteOrder(info.bind_size);
1102  sys::swapByteOrder(info.weak_bind_off);
1103  sys::swapByteOrder(info.weak_bind_size);
1104  sys::swapByteOrder(info.lazy_bind_off);
1105  sys::swapByteOrder(info.lazy_bind_size);
1106  sys::swapByteOrder(info.export_off);
1107  sys::swapByteOrder(info.export_size);
1108}
1109
1110inline void swapStruct(dylib_command &d) {
1111  sys::swapByteOrder(d.cmd);
1112  sys::swapByteOrder(d.cmdsize);
1113  sys::swapByteOrder(d.dylib.name);
1114  sys::swapByteOrder(d.dylib.timestamp);
1115  sys::swapByteOrder(d.dylib.current_version);
1116  sys::swapByteOrder(d.dylib.compatibility_version);
1117}
1118
1119inline void swapStruct(sub_framework_command &s) {
1120  sys::swapByteOrder(s.cmd);
1121  sys::swapByteOrder(s.cmdsize);
1122  sys::swapByteOrder(s.umbrella);
1123}
1124
1125inline void swapStruct(sub_umbrella_command &s) {
1126  sys::swapByteOrder(s.cmd);
1127  sys::swapByteOrder(s.cmdsize);
1128  sys::swapByteOrder(s.sub_umbrella);
1129}
1130
1131inline void swapStruct(sub_library_command &s) {
1132  sys::swapByteOrder(s.cmd);
1133  sys::swapByteOrder(s.cmdsize);
1134  sys::swapByteOrder(s.sub_library);
1135}
1136
1137inline void swapStruct(sub_client_command &s) {
1138  sys::swapByteOrder(s.cmd);
1139  sys::swapByteOrder(s.cmdsize);
1140  sys::swapByteOrder(s.client);
1141}
1142
1143inline void swapStruct(routines_command &r) {
1144  sys::swapByteOrder(r.cmd);
1145  sys::swapByteOrder(r.cmdsize);
1146  sys::swapByteOrder(r.init_address);
1147  sys::swapByteOrder(r.init_module);
1148  sys::swapByteOrder(r.reserved1);
1149  sys::swapByteOrder(r.reserved2);
1150  sys::swapByteOrder(r.reserved3);
1151  sys::swapByteOrder(r.reserved4);
1152  sys::swapByteOrder(r.reserved5);
1153  sys::swapByteOrder(r.reserved6);
1154}
1155
1156inline void swapStruct(routines_command_64 &r) {
1157  sys::swapByteOrder(r.cmd);
1158  sys::swapByteOrder(r.cmdsize);
1159  sys::swapByteOrder(r.init_address);
1160  sys::swapByteOrder(r.init_module);
1161  sys::swapByteOrder(r.reserved1);
1162  sys::swapByteOrder(r.reserved2);
1163  sys::swapByteOrder(r.reserved3);
1164  sys::swapByteOrder(r.reserved4);
1165  sys::swapByteOrder(r.reserved5);
1166  sys::swapByteOrder(r.reserved6);
1167}
1168
1169inline void swapStruct(thread_command &t) {
1170  sys::swapByteOrder(t.cmd);
1171  sys::swapByteOrder(t.cmdsize);
1172}
1173
1174inline void swapStruct(dylinker_command &d) {
1175  sys::swapByteOrder(d.cmd);
1176  sys::swapByteOrder(d.cmdsize);
1177  sys::swapByteOrder(d.name);
1178}
1179
1180inline void swapStruct(uuid_command &u) {
1181  sys::swapByteOrder(u.cmd);
1182  sys::swapByteOrder(u.cmdsize);
1183}
1184
1185inline void swapStruct(rpath_command &r) {
1186  sys::swapByteOrder(r.cmd);
1187  sys::swapByteOrder(r.cmdsize);
1188  sys::swapByteOrder(r.path);
1189}
1190
1191inline void swapStruct(source_version_command &s) {
1192  sys::swapByteOrder(s.cmd);
1193  sys::swapByteOrder(s.cmdsize);
1194  sys::swapByteOrder(s.version);
1195}
1196
1197inline void swapStruct(entry_point_command &e) {
1198  sys::swapByteOrder(e.cmd);
1199  sys::swapByteOrder(e.cmdsize);
1200  sys::swapByteOrder(e.entryoff);
1201  sys::swapByteOrder(e.stacksize);
1202}
1203
1204inline void swapStruct(encryption_info_command &e) {
1205  sys::swapByteOrder(e.cmd);
1206  sys::swapByteOrder(e.cmdsize);
1207  sys::swapByteOrder(e.cryptoff);
1208  sys::swapByteOrder(e.cryptsize);
1209  sys::swapByteOrder(e.cryptid);
1210}
1211
1212inline void swapStruct(encryption_info_command_64 &e) {
1213  sys::swapByteOrder(e.cmd);
1214  sys::swapByteOrder(e.cmdsize);
1215  sys::swapByteOrder(e.cryptoff);
1216  sys::swapByteOrder(e.cryptsize);
1217  sys::swapByteOrder(e.cryptid);
1218  sys::swapByteOrder(e.pad);
1219}
1220
1221inline void swapStruct(dysymtab_command &dst) {
1222  sys::swapByteOrder(dst.cmd);
1223  sys::swapByteOrder(dst.cmdsize);
1224  sys::swapByteOrder(dst.ilocalsym);
1225  sys::swapByteOrder(dst.nlocalsym);
1226  sys::swapByteOrder(dst.iextdefsym);
1227  sys::swapByteOrder(dst.nextdefsym);
1228  sys::swapByteOrder(dst.iundefsym);
1229  sys::swapByteOrder(dst.nundefsym);
1230  sys::swapByteOrder(dst.tocoff);
1231  sys::swapByteOrder(dst.ntoc);
1232  sys::swapByteOrder(dst.modtaboff);
1233  sys::swapByteOrder(dst.nmodtab);
1234  sys::swapByteOrder(dst.extrefsymoff);
1235  sys::swapByteOrder(dst.nextrefsyms);
1236  sys::swapByteOrder(dst.indirectsymoff);
1237  sys::swapByteOrder(dst.nindirectsyms);
1238  sys::swapByteOrder(dst.extreloff);
1239  sys::swapByteOrder(dst.nextrel);
1240  sys::swapByteOrder(dst.locreloff);
1241  sys::swapByteOrder(dst.nlocrel);
1242}
1243
1244inline void swapStruct(any_relocation_info &reloc) {
1245  sys::swapByteOrder(reloc.r_word0);
1246  sys::swapByteOrder(reloc.r_word1);
1247}
1248
1249inline void swapStruct(nlist_base &S) {
1250  sys::swapByteOrder(S.n_strx);
1251  sys::swapByteOrder(S.n_desc);
1252}
1253
1254inline void swapStruct(nlist &sym) {
1255  sys::swapByteOrder(sym.n_strx);
1256  sys::swapByteOrder(sym.n_desc);
1257  sys::swapByteOrder(sym.n_value);
1258}
1259
1260inline void swapStruct(nlist_64 &sym) {
1261  sys::swapByteOrder(sym.n_strx);
1262  sys::swapByteOrder(sym.n_desc);
1263  sys::swapByteOrder(sym.n_value);
1264}
1265
1266inline void swapStruct(linkedit_data_command &C) {
1267  sys::swapByteOrder(C.cmd);
1268  sys::swapByteOrder(C.cmdsize);
1269  sys::swapByteOrder(C.dataoff);
1270  sys::swapByteOrder(C.datasize);
1271}
1272
1273inline void swapStruct(linker_option_command &C) {
1274  sys::swapByteOrder(C.cmd);
1275  sys::swapByteOrder(C.cmdsize);
1276  sys::swapByteOrder(C.count);
1277}
1278
1279inline void swapStruct(version_min_command &C) {
1280  sys::swapByteOrder(C.cmd);
1281  sys::swapByteOrder(C.cmdsize);
1282  sys::swapByteOrder(C.version);
1283  sys::swapByteOrder(C.sdk);
1284}
1285
1286inline void swapStruct(note_command &C) {
1287  sys::swapByteOrder(C.cmd);
1288  sys::swapByteOrder(C.cmdsize);
1289  sys::swapByteOrder(C.offset);
1290  sys::swapByteOrder(C.size);
1291}
1292
1293inline void swapStruct(build_version_command &C) {
1294  sys::swapByteOrder(C.cmd);
1295  sys::swapByteOrder(C.cmdsize);
1296  sys::swapByteOrder(C.platform);
1297  sys::swapByteOrder(C.minos);
1298  sys::swapByteOrder(C.sdk);
1299  sys::swapByteOrder(C.ntools);
1300}
1301
1302inline void swapStruct(build_tool_version &C) {
1303  sys::swapByteOrder(C.tool);
1304  sys::swapByteOrder(C.version);
1305}
1306
1307inline void swapStruct(data_in_code_entry &C) {
1308  sys::swapByteOrder(C.offset);
1309  sys::swapByteOrder(C.length);
1310  sys::swapByteOrder(C.kind);
1311}
1312
1313inline void swapStruct(uint32_t &C) { sys::swapByteOrder(C); }
1314
1315// The prebind_cksum_command is obsolete and no longer supported.
1316inline void swapStruct(prebind_cksum_command &C) {
1317  sys::swapByteOrder(C.cmd);
1318  sys::swapByteOrder(C.cmdsize);
1319  sys::swapByteOrder(C.cksum);
1320}
1321
1322// The twolevel_hints_command is obsolete and no longer supported.
1323inline void swapStruct(twolevel_hints_command &C) {
1324  sys::swapByteOrder(C.cmd);
1325  sys::swapByteOrder(C.cmdsize);
1326  sys::swapByteOrder(C.offset);
1327  sys::swapByteOrder(C.nhints);
1328}
1329
1330// The prebound_dylib_command is obsolete and no longer supported.
1331inline void swapStruct(prebound_dylib_command &C) {
1332  sys::swapByteOrder(C.cmd);
1333  sys::swapByteOrder(C.cmdsize);
1334  sys::swapByteOrder(C.name);
1335  sys::swapByteOrder(C.nmodules);
1336  sys::swapByteOrder(C.linked_modules);
1337}
1338
1339// The fvmfile_command is obsolete and no longer supported.
1340inline void swapStruct(fvmfile_command &C) {
1341  sys::swapByteOrder(C.cmd);
1342  sys::swapByteOrder(C.cmdsize);
1343  sys::swapByteOrder(C.name);
1344  sys::swapByteOrder(C.header_addr);
1345}
1346
1347// The symseg_command is obsolete and no longer supported.
1348inline void swapStruct(symseg_command &C) {
1349  sys::swapByteOrder(C.cmd);
1350  sys::swapByteOrder(C.cmdsize);
1351  sys::swapByteOrder(C.offset);
1352  sys::swapByteOrder(C.size);
1353}
1354
1355// The ident_command is obsolete and no longer supported.
1356inline void swapStruct(ident_command &C) {
1357  sys::swapByteOrder(C.cmd);
1358  sys::swapByteOrder(C.cmdsize);
1359}
1360
1361inline void swapStruct(fvmlib &C) {
1362  sys::swapByteOrder(C.name);
1363  sys::swapByteOrder(C.minor_version);
1364  sys::swapByteOrder(C.header_addr);
1365}
1366
1367// The fvmlib_command is obsolete and no longer supported.
1368inline void swapStruct(fvmlib_command &C) {
1369  sys::swapByteOrder(C.cmd);
1370  sys::swapByteOrder(C.cmdsize);
1371  swapStruct(C.fvmlib);
1372}
1373
1374// Get/Set functions from <mach-o/nlist.h>
1375
1376static inline uint16_t GET_LIBRARY_ORDINAL(uint16_t n_desc) {
1377  return (((n_desc) >> 8u) & 0xffu);
1378}
1379
1380static inline void SET_LIBRARY_ORDINAL(uint16_t &n_desc, uint8_t ordinal) {
1381  n_desc = (((n_desc)&0x00ff) | (((ordinal)&0xff) << 8));
1382}
1383
1384static inline uint8_t GET_COMM_ALIGN(uint16_t n_desc) {
1385  return (n_desc >> 8u) & 0x0fu;
1386}
1387
1388static inline void SET_COMM_ALIGN(uint16_t &n_desc, uint8_t align) {
1389  n_desc = ((n_desc & 0xf0ffu) | ((align & 0x0fu) << 8u));
1390}
1391
1392// Enums from <mach/machine.h>
1393enum : uint32_t {
1394  // Capability bits used in the definition of cpu_type.
1395  CPU_ARCH_MASK = 0xff000000, // Mask for architecture bits
1396  CPU_ARCH_ABI64 = 0x01000000 // 64 bit ABI
1397};
1398
1399// Constants for the cputype field.
1400enum CPUType {
1401  CPU_TYPE_ANY = -1,
1402  CPU_TYPE_X86 = 7,
1403  CPU_TYPE_I386 = CPU_TYPE_X86,
1404  CPU_TYPE_X86_64 = CPU_TYPE_X86 | CPU_ARCH_ABI64,
1405  /* CPU_TYPE_MIPS      = 8, */
1406  CPU_TYPE_MC98000 = 10, // Old Motorola PowerPC
1407  CPU_TYPE_ARM = 12,
1408  CPU_TYPE_ARM64 = CPU_TYPE_ARM | CPU_ARCH_ABI64,
1409  CPU_TYPE_SPARC = 14,
1410  CPU_TYPE_POWERPC = 18,
1411  CPU_TYPE_POWERPC64 = CPU_TYPE_POWERPC | CPU_ARCH_ABI64
1412};
1413
1414enum : uint32_t {
1415  // Capability bits used in the definition of cpusubtype.
1416  CPU_SUBTYPE_MASK = 0xff000000,  // Mask for architecture bits
1417  CPU_SUBTYPE_LIB64 = 0x80000000, // 64 bit libraries
1418
1419  // Special CPU subtype constants.
1420  CPU_SUBTYPE_MULTIPLE = ~0u
1421};
1422
1423// Constants for the cpusubtype field.
1424enum CPUSubTypeX86 {
1425  CPU_SUBTYPE_I386_ALL = 3,
1426  CPU_SUBTYPE_386 = 3,
1427  CPU_SUBTYPE_486 = 4,
1428  CPU_SUBTYPE_486SX = 0x84,
1429  CPU_SUBTYPE_586 = 5,
1430  CPU_SUBTYPE_PENT = CPU_SUBTYPE_586,
1431  CPU_SUBTYPE_PENTPRO = 0x16,
1432  CPU_SUBTYPE_PENTII_M3 = 0x36,
1433  CPU_SUBTYPE_PENTII_M5 = 0x56,
1434  CPU_SUBTYPE_CELERON = 0x67,
1435  CPU_SUBTYPE_CELERON_MOBILE = 0x77,
1436  CPU_SUBTYPE_PENTIUM_3 = 0x08,
1437  CPU_SUBTYPE_PENTIUM_3_M = 0x18,
1438  CPU_SUBTYPE_PENTIUM_3_XEON = 0x28,
1439  CPU_SUBTYPE_PENTIUM_M = 0x09,
1440  CPU_SUBTYPE_PENTIUM_4 = 0x0a,
1441  CPU_SUBTYPE_PENTIUM_4_M = 0x1a,
1442  CPU_SUBTYPE_ITANIUM = 0x0b,
1443  CPU_SUBTYPE_ITANIUM_2 = 0x1b,
1444  CPU_SUBTYPE_XEON = 0x0c,
1445  CPU_SUBTYPE_XEON_MP = 0x1c,
1446
1447  CPU_SUBTYPE_X86_ALL = 3,
1448  CPU_SUBTYPE_X86_64_ALL = 3,
1449  CPU_SUBTYPE_X86_ARCH1 = 4,
1450  CPU_SUBTYPE_X86_64_H = 8
1451};
1452static inline int CPU_SUBTYPE_INTEL(int Family, int Model) {
1453  return Family | (Model << 4);
1454}
1455static inline int CPU_SUBTYPE_INTEL_FAMILY(CPUSubTypeX86 ST) {
1456  return ((int)ST) & 0x0f;
1457}
1458static inline int CPU_SUBTYPE_INTEL_MODEL(CPUSubTypeX86 ST) {
1459  return ((int)ST) >> 4;
1460}
1461enum { CPU_SUBTYPE_INTEL_FAMILY_MAX = 15, CPU_SUBTYPE_INTEL_MODEL_ALL = 0 };
1462
1463enum CPUSubTypeARM {
1464  CPU_SUBTYPE_ARM_ALL = 0,
1465  CPU_SUBTYPE_ARM_V4T = 5,
1466  CPU_SUBTYPE_ARM_V6 = 6,
1467  CPU_SUBTYPE_ARM_V5 = 7,
1468  CPU_SUBTYPE_ARM_V5TEJ = 7,
1469  CPU_SUBTYPE_ARM_XSCALE = 8,
1470  CPU_SUBTYPE_ARM_V7 = 9,
1471  //  unused  ARM_V7F     = 10,
1472  CPU_SUBTYPE_ARM_V7S = 11,
1473  CPU_SUBTYPE_ARM_V7K = 12,
1474  CPU_SUBTYPE_ARM_V6M = 14,
1475  CPU_SUBTYPE_ARM_V7M = 15,
1476  CPU_SUBTYPE_ARM_V7EM = 16
1477};
1478
1479enum CPUSubTypeARM64 { CPU_SUBTYPE_ARM64_ALL = 0 };
1480
1481enum CPUSubTypeSPARC { CPU_SUBTYPE_SPARC_ALL = 0 };
1482
1483enum CPUSubTypePowerPC {
1484  CPU_SUBTYPE_POWERPC_ALL = 0,
1485  CPU_SUBTYPE_POWERPC_601 = 1,
1486  CPU_SUBTYPE_POWERPC_602 = 2,
1487  CPU_SUBTYPE_POWERPC_603 = 3,
1488  CPU_SUBTYPE_POWERPC_603e = 4,
1489  CPU_SUBTYPE_POWERPC_603ev = 5,
1490  CPU_SUBTYPE_POWERPC_604 = 6,
1491  CPU_SUBTYPE_POWERPC_604e = 7,
1492  CPU_SUBTYPE_POWERPC_620 = 8,
1493  CPU_SUBTYPE_POWERPC_750 = 9,
1494  CPU_SUBTYPE_POWERPC_7400 = 10,
1495  CPU_SUBTYPE_POWERPC_7450 = 11,
1496  CPU_SUBTYPE_POWERPC_970 = 100,
1497
1498  CPU_SUBTYPE_MC980000_ALL = CPU_SUBTYPE_POWERPC_ALL,
1499  CPU_SUBTYPE_MC98601 = CPU_SUBTYPE_POWERPC_601
1500};
1501
1502struct x86_thread_state32_t {
1503  uint32_t eax;
1504  uint32_t ebx;
1505  uint32_t ecx;
1506  uint32_t edx;
1507  uint32_t edi;
1508  uint32_t esi;
1509  uint32_t ebp;
1510  uint32_t esp;
1511  uint32_t ss;
1512  uint32_t eflags;
1513  uint32_t eip;
1514  uint32_t cs;
1515  uint32_t ds;
1516  uint32_t es;
1517  uint32_t fs;
1518  uint32_t gs;
1519};
1520
1521struct x86_thread_state64_t {
1522  uint64_t rax;
1523  uint64_t rbx;
1524  uint64_t rcx;
1525  uint64_t rdx;
1526  uint64_t rdi;
1527  uint64_t rsi;
1528  uint64_t rbp;
1529  uint64_t rsp;
1530  uint64_t r8;
1531  uint64_t r9;
1532  uint64_t r10;
1533  uint64_t r11;
1534  uint64_t r12;
1535  uint64_t r13;
1536  uint64_t r14;
1537  uint64_t r15;
1538  uint64_t rip;
1539  uint64_t rflags;
1540  uint64_t cs;
1541  uint64_t fs;
1542  uint64_t gs;
1543};
1544
1545enum x86_fp_control_precis {
1546  x86_FP_PREC_24B = 0,
1547  x86_FP_PREC_53B = 2,
1548  x86_FP_PREC_64B = 3
1549};
1550
1551enum x86_fp_control_rc {
1552  x86_FP_RND_NEAR = 0,
1553  x86_FP_RND_DOWN = 1,
1554  x86_FP_RND_UP = 2,
1555  x86_FP_CHOP = 3
1556};
1557
1558struct fp_control_t {
1559  unsigned short invalid : 1, denorm : 1, zdiv : 1, ovrfl : 1, undfl : 1,
1560      precis : 1, : 2, pc : 2, rc : 2, : 1, : 3;
1561};
1562
1563struct fp_status_t {
1564  unsigned short invalid : 1, denorm : 1, zdiv : 1, ovrfl : 1, undfl : 1,
1565      precis : 1, stkflt : 1, errsumm : 1, c0 : 1, c1 : 1, c2 : 1, tos : 3,
1566      c3 : 1, busy : 1;
1567};
1568
1569struct mmst_reg_t {
1570  char mmst_reg[10];
1571  char mmst_rsrv[6];
1572};
1573
1574struct xmm_reg_t {
1575  char xmm_reg[16];
1576};
1577
1578struct x86_float_state64_t {
1579  int32_t fpu_reserved[2];
1580  fp_control_t fpu_fcw;
1581  fp_status_t fpu_fsw;
1582  uint8_t fpu_ftw;
1583  uint8_t fpu_rsrv1;
1584  uint16_t fpu_fop;
1585  uint32_t fpu_ip;
1586  uint16_t fpu_cs;
1587  uint16_t fpu_rsrv2;
1588  uint32_t fpu_dp;
1589  uint16_t fpu_ds;
1590  uint16_t fpu_rsrv3;
1591  uint32_t fpu_mxcsr;
1592  uint32_t fpu_mxcsrmask;
1593  mmst_reg_t fpu_stmm0;
1594  mmst_reg_t fpu_stmm1;
1595  mmst_reg_t fpu_stmm2;
1596  mmst_reg_t fpu_stmm3;
1597  mmst_reg_t fpu_stmm4;
1598  mmst_reg_t fpu_stmm5;
1599  mmst_reg_t fpu_stmm6;
1600  mmst_reg_t fpu_stmm7;
1601  xmm_reg_t fpu_xmm0;
1602  xmm_reg_t fpu_xmm1;
1603  xmm_reg_t fpu_xmm2;
1604  xmm_reg_t fpu_xmm3;
1605  xmm_reg_t fpu_xmm4;
1606  xmm_reg_t fpu_xmm5;
1607  xmm_reg_t fpu_xmm6;
1608  xmm_reg_t fpu_xmm7;
1609  xmm_reg_t fpu_xmm8;
1610  xmm_reg_t fpu_xmm9;
1611  xmm_reg_t fpu_xmm10;
1612  xmm_reg_t fpu_xmm11;
1613  xmm_reg_t fpu_xmm12;
1614  xmm_reg_t fpu_xmm13;
1615  xmm_reg_t fpu_xmm14;
1616  xmm_reg_t fpu_xmm15;
1617  char fpu_rsrv4[6 * 16];
1618  uint32_t fpu_reserved1;
1619};
1620
1621struct x86_exception_state64_t {
1622  uint16_t trapno;
1623  uint16_t cpu;
1624  uint32_t err;
1625  uint64_t faultvaddr;
1626};
1627
1628inline void swapStruct(x86_thread_state32_t &x) {
1629  sys::swapByteOrder(x.eax);
1630  sys::swapByteOrder(x.ebx);
1631  sys::swapByteOrder(x.ecx);
1632  sys::swapByteOrder(x.edx);
1633  sys::swapByteOrder(x.edi);
1634  sys::swapByteOrder(x.esi);
1635  sys::swapByteOrder(x.ebp);
1636  sys::swapByteOrder(x.esp);
1637  sys::swapByteOrder(x.ss);
1638  sys::swapByteOrder(x.eflags);
1639  sys::swapByteOrder(x.eip);
1640  sys::swapByteOrder(x.cs);
1641  sys::swapByteOrder(x.ds);
1642  sys::swapByteOrder(x.es);
1643  sys::swapByteOrder(x.fs);
1644  sys::swapByteOrder(x.gs);
1645}
1646
1647inline void swapStruct(x86_thread_state64_t &x) {
1648  sys::swapByteOrder(x.rax);
1649  sys::swapByteOrder(x.rbx);
1650  sys::swapByteOrder(x.rcx);
1651  sys::swapByteOrder(x.rdx);
1652  sys::swapByteOrder(x.rdi);
1653  sys::swapByteOrder(x.rsi);
1654  sys::swapByteOrder(x.rbp);
1655  sys::swapByteOrder(x.rsp);
1656  sys::swapByteOrder(x.r8);
1657  sys::swapByteOrder(x.r9);
1658  sys::swapByteOrder(x.r10);
1659  sys::swapByteOrder(x.r11);
1660  sys::swapByteOrder(x.r12);
1661  sys::swapByteOrder(x.r13);
1662  sys::swapByteOrder(x.r14);
1663  sys::swapByteOrder(x.r15);
1664  sys::swapByteOrder(x.rip);
1665  sys::swapByteOrder(x.rflags);
1666  sys::swapByteOrder(x.cs);
1667  sys::swapByteOrder(x.fs);
1668  sys::swapByteOrder(x.gs);
1669}
1670
1671inline void swapStruct(x86_float_state64_t &x) {
1672  sys::swapByteOrder(x.fpu_reserved[0]);
1673  sys::swapByteOrder(x.fpu_reserved[1]);
1674  // TODO swap: fp_control_t fpu_fcw;
1675  // TODO swap: fp_status_t fpu_fsw;
1676  sys::swapByteOrder(x.fpu_fop);
1677  sys::swapByteOrder(x.fpu_ip);
1678  sys::swapByteOrder(x.fpu_cs);
1679  sys::swapByteOrder(x.fpu_rsrv2);
1680  sys::swapByteOrder(x.fpu_dp);
1681  sys::swapByteOrder(x.fpu_ds);
1682  sys::swapByteOrder(x.fpu_rsrv3);
1683  sys::swapByteOrder(x.fpu_mxcsr);
1684  sys::swapByteOrder(x.fpu_mxcsrmask);
1685  sys::swapByteOrder(x.fpu_reserved1);
1686}
1687
1688inline void swapStruct(x86_exception_state64_t &x) {
1689  sys::swapByteOrder(x.trapno);
1690  sys::swapByteOrder(x.cpu);
1691  sys::swapByteOrder(x.err);
1692  sys::swapByteOrder(x.faultvaddr);
1693}
1694
1695struct x86_state_hdr_t {
1696  uint32_t flavor;
1697  uint32_t count;
1698};
1699
1700struct x86_thread_state_t {
1701  x86_state_hdr_t tsh;
1702  union {
1703    x86_thread_state64_t ts64;
1704    x86_thread_state32_t ts32;
1705  } uts;
1706};
1707
1708struct x86_float_state_t {
1709  x86_state_hdr_t fsh;
1710  union {
1711    x86_float_state64_t fs64;
1712  } ufs;
1713};
1714
1715struct x86_exception_state_t {
1716  x86_state_hdr_t esh;
1717  union {
1718    x86_exception_state64_t es64;
1719  } ues;
1720};
1721
1722inline void swapStruct(x86_state_hdr_t &x) {
1723  sys::swapByteOrder(x.flavor);
1724  sys::swapByteOrder(x.count);
1725}
1726
1727enum X86ThreadFlavors {
1728  x86_THREAD_STATE32 = 1,
1729  x86_FLOAT_STATE32 = 2,
1730  x86_EXCEPTION_STATE32 = 3,
1731  x86_THREAD_STATE64 = 4,
1732  x86_FLOAT_STATE64 = 5,
1733  x86_EXCEPTION_STATE64 = 6,
1734  x86_THREAD_STATE = 7,
1735  x86_FLOAT_STATE = 8,
1736  x86_EXCEPTION_STATE = 9,
1737  x86_DEBUG_STATE32 = 10,
1738  x86_DEBUG_STATE64 = 11,
1739  x86_DEBUG_STATE = 12
1740};
1741
1742inline void swapStruct(x86_thread_state_t &x) {
1743  swapStruct(x.tsh);
1744  if (x.tsh.flavor == x86_THREAD_STATE64)
1745    swapStruct(x.uts.ts64);
1746}
1747
1748inline void swapStruct(x86_float_state_t &x) {
1749  swapStruct(x.fsh);
1750  if (x.fsh.flavor == x86_FLOAT_STATE64)
1751    swapStruct(x.ufs.fs64);
1752}
1753
1754inline void swapStruct(x86_exception_state_t &x) {
1755  swapStruct(x.esh);
1756  if (x.esh.flavor == x86_EXCEPTION_STATE64)
1757    swapStruct(x.ues.es64);
1758}
1759
1760const uint32_t x86_THREAD_STATE32_COUNT =
1761    sizeof(x86_thread_state32_t) / sizeof(uint32_t);
1762
1763const uint32_t x86_THREAD_STATE64_COUNT =
1764    sizeof(x86_thread_state64_t) / sizeof(uint32_t);
1765const uint32_t x86_FLOAT_STATE64_COUNT =
1766    sizeof(x86_float_state64_t) / sizeof(uint32_t);
1767const uint32_t x86_EXCEPTION_STATE64_COUNT =
1768    sizeof(x86_exception_state64_t) / sizeof(uint32_t);
1769
1770const uint32_t x86_THREAD_STATE_COUNT =
1771    sizeof(x86_thread_state_t) / sizeof(uint32_t);
1772const uint32_t x86_FLOAT_STATE_COUNT =
1773    sizeof(x86_float_state_t) / sizeof(uint32_t);
1774const uint32_t x86_EXCEPTION_STATE_COUNT =
1775    sizeof(x86_exception_state_t) / sizeof(uint32_t);
1776
1777struct arm_thread_state32_t {
1778  uint32_t r[13];
1779  uint32_t sp;
1780  uint32_t lr;
1781  uint32_t pc;
1782  uint32_t cpsr;
1783};
1784
1785inline void swapStruct(arm_thread_state32_t &x) {
1786  for (int i = 0; i < 13; i++)
1787    sys::swapByteOrder(x.r[i]);
1788  sys::swapByteOrder(x.sp);
1789  sys::swapByteOrder(x.lr);
1790  sys::swapByteOrder(x.pc);
1791  sys::swapByteOrder(x.cpsr);
1792}
1793
1794struct arm_thread_state64_t {
1795  uint64_t x[29];
1796  uint64_t fp;
1797  uint64_t lr;
1798  uint64_t sp;
1799  uint64_t pc;
1800  uint32_t cpsr;
1801  uint32_t pad;
1802};
1803
1804inline void swapStruct(arm_thread_state64_t &x) {
1805  for (int i = 0; i < 29; i++)
1806    sys::swapByteOrder(x.x[i]);
1807  sys::swapByteOrder(x.fp);
1808  sys::swapByteOrder(x.lr);
1809  sys::swapByteOrder(x.sp);
1810  sys::swapByteOrder(x.pc);
1811  sys::swapByteOrder(x.cpsr);
1812}
1813
1814struct arm_state_hdr_t {
1815  uint32_t flavor;
1816  uint32_t count;
1817};
1818
1819struct arm_thread_state_t {
1820  arm_state_hdr_t tsh;
1821  union {
1822    arm_thread_state32_t ts32;
1823  } uts;
1824};
1825
1826inline void swapStruct(arm_state_hdr_t &x) {
1827  sys::swapByteOrder(x.flavor);
1828  sys::swapByteOrder(x.count);
1829}
1830
1831enum ARMThreadFlavors {
1832  ARM_THREAD_STATE = 1,
1833  ARM_VFP_STATE = 2,
1834  ARM_EXCEPTION_STATE = 3,
1835  ARM_DEBUG_STATE = 4,
1836  ARN_THREAD_STATE_NONE = 5,
1837  ARM_THREAD_STATE64 = 6,
1838  ARM_EXCEPTION_STATE64 = 7
1839};
1840
1841inline void swapStruct(arm_thread_state_t &x) {
1842  swapStruct(x.tsh);
1843  if (x.tsh.flavor == ARM_THREAD_STATE)
1844    swapStruct(x.uts.ts32);
1845}
1846
1847const uint32_t ARM_THREAD_STATE_COUNT =
1848    sizeof(arm_thread_state32_t) / sizeof(uint32_t);
1849
1850const uint32_t ARM_THREAD_STATE64_COUNT =
1851    sizeof(arm_thread_state64_t) / sizeof(uint32_t);
1852
1853struct ppc_thread_state32_t {
1854  uint32_t srr0;
1855  uint32_t srr1;
1856  uint32_t r0;
1857  uint32_t r1;
1858  uint32_t r2;
1859  uint32_t r3;
1860  uint32_t r4;
1861  uint32_t r5;
1862  uint32_t r6;
1863  uint32_t r7;
1864  uint32_t r8;
1865  uint32_t r9;
1866  uint32_t r10;
1867  uint32_t r11;
1868  uint32_t r12;
1869  uint32_t r13;
1870  uint32_t r14;
1871  uint32_t r15;
1872  uint32_t r16;
1873  uint32_t r17;
1874  uint32_t r18;
1875  uint32_t r19;
1876  uint32_t r20;
1877  uint32_t r21;
1878  uint32_t r22;
1879  uint32_t r23;
1880  uint32_t r24;
1881  uint32_t r25;
1882  uint32_t r26;
1883  uint32_t r27;
1884  uint32_t r28;
1885  uint32_t r29;
1886  uint32_t r30;
1887  uint32_t r31;
1888  uint32_t ct;
1889  uint32_t xer;
1890  uint32_t lr;
1891  uint32_t ctr;
1892  uint32_t mq;
1893  uint32_t vrsave;
1894};
1895
1896inline void swapStruct(ppc_thread_state32_t &x) {
1897  sys::swapByteOrder(x.srr0);
1898  sys::swapByteOrder(x.srr1);
1899  sys::swapByteOrder(x.r0);
1900  sys::swapByteOrder(x.r1);
1901  sys::swapByteOrder(x.r2);
1902  sys::swapByteOrder(x.r3);
1903  sys::swapByteOrder(x.r4);
1904  sys::swapByteOrder(x.r5);
1905  sys::swapByteOrder(x.r6);
1906  sys::swapByteOrder(x.r7);
1907  sys::swapByteOrder(x.r8);
1908  sys::swapByteOrder(x.r9);
1909  sys::swapByteOrder(x.r10);
1910  sys::swapByteOrder(x.r11);
1911  sys::swapByteOrder(x.r12);
1912  sys::swapByteOrder(x.r13);
1913  sys::swapByteOrder(x.r14);
1914  sys::swapByteOrder(x.r15);
1915  sys::swapByteOrder(x.r16);
1916  sys::swapByteOrder(x.r17);
1917  sys::swapByteOrder(x.r18);
1918  sys::swapByteOrder(x.r19);
1919  sys::swapByteOrder(x.r20);
1920  sys::swapByteOrder(x.r21);
1921  sys::swapByteOrder(x.r22);
1922  sys::swapByteOrder(x.r23);
1923  sys::swapByteOrder(x.r24);
1924  sys::swapByteOrder(x.r25);
1925  sys::swapByteOrder(x.r26);
1926  sys::swapByteOrder(x.r27);
1927  sys::swapByteOrder(x.r28);
1928  sys::swapByteOrder(x.r29);
1929  sys::swapByteOrder(x.r30);
1930  sys::swapByteOrder(x.r31);
1931  sys::swapByteOrder(x.ct);
1932  sys::swapByteOrder(x.xer);
1933  sys::swapByteOrder(x.lr);
1934  sys::swapByteOrder(x.ctr);
1935  sys::swapByteOrder(x.mq);
1936  sys::swapByteOrder(x.vrsave);
1937}
1938
1939struct ppc_state_hdr_t {
1940  uint32_t flavor;
1941  uint32_t count;
1942};
1943
1944struct ppc_thread_state_t {
1945  ppc_state_hdr_t tsh;
1946  union {
1947    ppc_thread_state32_t ts32;
1948  } uts;
1949};
1950
1951inline void swapStruct(ppc_state_hdr_t &x) {
1952  sys::swapByteOrder(x.flavor);
1953  sys::swapByteOrder(x.count);
1954}
1955
1956enum PPCThreadFlavors {
1957  PPC_THREAD_STATE = 1,
1958  PPC_FLOAT_STATE = 2,
1959  PPC_EXCEPTION_STATE = 3,
1960  PPC_VECTOR_STATE = 4,
1961  PPC_THREAD_STATE64 = 5,
1962  PPC_EXCEPTION_STATE64 = 6,
1963  PPC_THREAD_STATE_NONE = 7
1964};
1965
1966inline void swapStruct(ppc_thread_state_t &x) {
1967  swapStruct(x.tsh);
1968  if (x.tsh.flavor == PPC_THREAD_STATE)
1969    swapStruct(x.uts.ts32);
1970}
1971
1972const uint32_t PPC_THREAD_STATE_COUNT =
1973    sizeof(ppc_thread_state32_t) / sizeof(uint32_t);
1974
1975// Define a union of all load command structs
1976#define LOAD_COMMAND_STRUCT(LCStruct) LCStruct LCStruct##_data;
1977
1978union macho_load_command {
1979#include "llvm/BinaryFormat/MachO.def"
1980};
1981
1982} // end namespace MachO
1983} // end namespace llvm
1984
1985#endif
1986