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 
21 namespace llvm {
22 namespace MachO {
23 // Enums from <mach-o/loader.h>
24 enum : 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 
37 enum 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 
53 enum {
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 
85 enum : 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 
92 enum LoadCommandType : uint32_t {
93 #include "llvm/BinaryFormat/MachO.def"
94 };
95 
96 #undef HANDLE_LOAD_COMMAND
97 
98 enum : 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.
115 enum 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 
176 enum : 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 
215 enum 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 
224 enum RebaseType {
225   REBASE_TYPE_POINTER = 1u,
226   REBASE_TYPE_TEXT_ABSOLUTE32 = 2u,
227   REBASE_TYPE_TEXT_PCREL32 = 3u
228 };
229 
230 enum { REBASE_OPCODE_MASK = 0xF0u, REBASE_IMMEDIATE_MASK = 0x0Fu };
231 
232 enum 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 
244 enum BindType {
245   BIND_TYPE_POINTER = 1u,
246   BIND_TYPE_TEXT_ABSOLUTE32 = 2u,
247   BIND_TYPE_TEXT_PCREL32 = 3u
248 };
249 
250 enum BindSpecialDylib {
251   BIND_SPECIAL_DYLIB_SELF = 0,
252   BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE = -1,
253   BIND_SPECIAL_DYLIB_FLAT_LOOKUP = -2
254 };
255 
256 enum {
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 
264 enum 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 
280 enum {
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 
287 enum 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 
293 enum {
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 
302 enum 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 
312 enum 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 
319 enum {
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 
346 enum 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 
382 enum : 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 
392 enum 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>
481 enum { VM_PROT_READ = 0x1, VM_PROT_WRITE = 0x2, VM_PROT_EXECUTE = 0x4 };
482 
483 // Values for platform field in build_version_command.
484 enum PlatformType {
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.
493 enum { TOOL_CLANG = 1, TOOL_SWIFT = 2, TOOL_LD = 3 };
494 
495 // Structs from <mach-o/loader.h>
496 
497 struct 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 
507 struct 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 
518 struct load_command {
519   uint32_t cmd;
520   uint32_t cmdsize;
521 };
522 
523 struct 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 
537 struct 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 
551 struct 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 
565 struct 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 
580 struct 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.
587 struct fvmlib_command {
588   uint32_t cmd;
589   uint32_t cmdsize;
590   struct fvmlib fvmlib;
591 };
592 
593 struct dylib {
594   uint32_t name;
595   uint32_t timestamp;
596   uint32_t current_version;
597   uint32_t compatibility_version;
598 };
599 
600 struct dylib_command {
601   uint32_t cmd;
602   uint32_t cmdsize;
603   struct dylib dylib;
604 };
605 
606 struct sub_framework_command {
607   uint32_t cmd;
608   uint32_t cmdsize;
609   uint32_t umbrella;
610 };
611 
612 struct sub_client_command {
613   uint32_t cmd;
614   uint32_t cmdsize;
615   uint32_t client;
616 };
617 
618 struct sub_umbrella_command {
619   uint32_t cmd;
620   uint32_t cmdsize;
621   uint32_t sub_umbrella;
622 };
623 
624 struct 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.
631 struct 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 
639 struct dylinker_command {
640   uint32_t cmd;
641   uint32_t cmdsize;
642   uint32_t name;
643 };
644 
645 struct thread_command {
646   uint32_t cmd;
647   uint32_t cmdsize;
648 };
649 
650 struct 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 
663 struct 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 
676 struct 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 
685 struct 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 
708 struct dylib_table_of_contents {
709   uint32_t symbol_index;
710   uint32_t module_index;
711 };
712 
713 struct 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 
729 struct 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 
745 struct dylib_reference {
746   uint32_t isym : 24, flags : 8;
747 };
748 
749 // The twolevel_hints_command is obsolete and no longer supported.
750 struct 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.
758 struct twolevel_hint {
759   uint32_t isub_image : 8, itoc : 24;
760 };
761 
762 // The prebind_cksum_command is obsolete and no longer supported.
763 struct prebind_cksum_command {
764   uint32_t cmd;
765   uint32_t cmdsize;
766   uint32_t cksum;
767 };
768 
769 struct uuid_command {
770   uint32_t cmd;
771   uint32_t cmdsize;
772   uint8_t uuid[16];
773 };
774 
775 struct rpath_command {
776   uint32_t cmd;
777   uint32_t cmdsize;
778   uint32_t path;
779 };
780 
781 struct linkedit_data_command {
782   uint32_t cmd;
783   uint32_t cmdsize;
784   uint32_t dataoff;
785   uint32_t datasize;
786 };
787 
788 struct data_in_code_entry {
789   uint32_t offset;
790   uint16_t length;
791   uint16_t kind;
792 };
793 
794 struct source_version_command {
795   uint32_t cmd;
796   uint32_t cmdsize;
797   uint64_t version;
798 };
799 
800 struct 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 
808 struct 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 
817 struct 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 
825 struct 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 
833 struct build_tool_version {
834   uint32_t tool;    // enum for the tool
835   uint32_t version; // version of the tool
836 };
837 
838 struct 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 
848 struct 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 
863 struct 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.
870 struct 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.
878 struct ident_command {
879   uint32_t cmd;
880   uint32_t cmdsize;
881 };
882 
883 // The fvmfile_command is obsolete and no longer supported.
884 struct fvmfile_command {
885   uint32_t cmd;
886   uint32_t cmdsize;
887   uint32_t name;
888   uint32_t header_addr;
889 };
890 
891 struct tlv_descriptor_32 {
892   uint32_t thunk;
893   uint32_t key;
894   uint32_t offset;
895 };
896 
897 struct tlv_descriptor_64 {
898   uint64_t thunk;
899   uint64_t key;
900   uint64_t offset;
901 };
902 
903 struct tlv_descriptor {
904   uintptr_t thunk;
905   uintptr_t key;
906   uintptr_t offset;
907 };
908 
909 struct 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>
917 struct fat_header {
918   uint32_t magic;
919   uint32_t nfat_arch;
920 };
921 
922 struct fat_arch {
923   uint32_t cputype;
924   uint32_t cpusubtype;
925   uint32_t offset;
926   uint32_t size;
927   uint32_t align;
928 };
929 
930 struct 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>
940 struct 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 
946 struct 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
958 struct any_relocation_info {
959   uint32_t r_word0, r_word1;
960 };
961 
962 // Structs from <mach-o/nlist.h>
963 struct nlist_base {
964   uint32_t n_strx;
965   uint8_t n_type;
966   uint8_t n_sect;
967   uint16_t n_desc;
968 };
969 
970 struct 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 
978 struct 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 
swapStruct(fat_header & mh)988 inline void swapStruct(fat_header &mh) {
989   sys::swapByteOrder(mh.magic);
990   sys::swapByteOrder(mh.nfat_arch);
991 }
992 
swapStruct(fat_arch & mh)993 inline 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 
swapStruct(fat_arch_64 & mh)1001 inline 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 
swapStruct(mach_header & mh)1010 inline 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 
swapStruct(mach_header_64 & H)1020 inline 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 
swapStruct(load_command & lc)1031 inline void swapStruct(load_command &lc) {
1032   sys::swapByteOrder(lc.cmd);
1033   sys::swapByteOrder(lc.cmdsize);
1034 }
1035 
swapStruct(symtab_command & lc)1036 inline 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 
swapStruct(segment_command_64 & seg)1045 inline 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 
swapStruct(segment_command & seg)1058 inline 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 
swapStruct(section_64 & sect)1071 inline 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 
swapStruct(section & sect)1083 inline 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 
swapStruct(dyld_info_command & info)1095 inline 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 
swapStruct(dylib_command & d)1110 inline 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 
swapStruct(sub_framework_command & s)1119 inline void swapStruct(sub_framework_command &s) {
1120   sys::swapByteOrder(s.cmd);
1121   sys::swapByteOrder(s.cmdsize);
1122   sys::swapByteOrder(s.umbrella);
1123 }
1124 
swapStruct(sub_umbrella_command & s)1125 inline void swapStruct(sub_umbrella_command &s) {
1126   sys::swapByteOrder(s.cmd);
1127   sys::swapByteOrder(s.cmdsize);
1128   sys::swapByteOrder(s.sub_umbrella);
1129 }
1130 
swapStruct(sub_library_command & s)1131 inline void swapStruct(sub_library_command &s) {
1132   sys::swapByteOrder(s.cmd);
1133   sys::swapByteOrder(s.cmdsize);
1134   sys::swapByteOrder(s.sub_library);
1135 }
1136 
swapStruct(sub_client_command & s)1137 inline void swapStruct(sub_client_command &s) {
1138   sys::swapByteOrder(s.cmd);
1139   sys::swapByteOrder(s.cmdsize);
1140   sys::swapByteOrder(s.client);
1141 }
1142 
swapStruct(routines_command & r)1143 inline 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 
swapStruct(routines_command_64 & r)1156 inline 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 
swapStruct(thread_command & t)1169 inline void swapStruct(thread_command &t) {
1170   sys::swapByteOrder(t.cmd);
1171   sys::swapByteOrder(t.cmdsize);
1172 }
1173 
swapStruct(dylinker_command & d)1174 inline void swapStruct(dylinker_command &d) {
1175   sys::swapByteOrder(d.cmd);
1176   sys::swapByteOrder(d.cmdsize);
1177   sys::swapByteOrder(d.name);
1178 }
1179 
swapStruct(uuid_command & u)1180 inline void swapStruct(uuid_command &u) {
1181   sys::swapByteOrder(u.cmd);
1182   sys::swapByteOrder(u.cmdsize);
1183 }
1184 
swapStruct(rpath_command & r)1185 inline void swapStruct(rpath_command &r) {
1186   sys::swapByteOrder(r.cmd);
1187   sys::swapByteOrder(r.cmdsize);
1188   sys::swapByteOrder(r.path);
1189 }
1190 
swapStruct(source_version_command & s)1191 inline void swapStruct(source_version_command &s) {
1192   sys::swapByteOrder(s.cmd);
1193   sys::swapByteOrder(s.cmdsize);
1194   sys::swapByteOrder(s.version);
1195 }
1196 
swapStruct(entry_point_command & e)1197 inline 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 
swapStruct(encryption_info_command & e)1204 inline 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 
swapStruct(encryption_info_command_64 & e)1212 inline 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 
swapStruct(dysymtab_command & dst)1221 inline 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 
swapStruct(any_relocation_info & reloc)1244 inline void swapStruct(any_relocation_info &reloc) {
1245   sys::swapByteOrder(reloc.r_word0);
1246   sys::swapByteOrder(reloc.r_word1);
1247 }
1248 
swapStruct(nlist_base & S)1249 inline void swapStruct(nlist_base &S) {
1250   sys::swapByteOrder(S.n_strx);
1251   sys::swapByteOrder(S.n_desc);
1252 }
1253 
swapStruct(nlist & sym)1254 inline void swapStruct(nlist &sym) {
1255   sys::swapByteOrder(sym.n_strx);
1256   sys::swapByteOrder(sym.n_desc);
1257   sys::swapByteOrder(sym.n_value);
1258 }
1259 
swapStruct(nlist_64 & sym)1260 inline 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 
swapStruct(linkedit_data_command & C)1266 inline 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 
swapStruct(linker_option_command & C)1273 inline void swapStruct(linker_option_command &C) {
1274   sys::swapByteOrder(C.cmd);
1275   sys::swapByteOrder(C.cmdsize);
1276   sys::swapByteOrder(C.count);
1277 }
1278 
swapStruct(version_min_command & C)1279 inline 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 
swapStruct(note_command & C)1286 inline 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 
swapStruct(build_version_command & C)1293 inline 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 
swapStruct(build_tool_version & C)1302 inline void swapStruct(build_tool_version &C) {
1303   sys::swapByteOrder(C.tool);
1304   sys::swapByteOrder(C.version);
1305 }
1306 
swapStruct(data_in_code_entry & C)1307 inline void swapStruct(data_in_code_entry &C) {
1308   sys::swapByteOrder(C.offset);
1309   sys::swapByteOrder(C.length);
1310   sys::swapByteOrder(C.kind);
1311 }
1312 
swapStruct(uint32_t & C)1313 inline void swapStruct(uint32_t &C) { sys::swapByteOrder(C); }
1314 
1315 // The prebind_cksum_command is obsolete and no longer supported.
swapStruct(prebind_cksum_command & C)1316 inline 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.
swapStruct(twolevel_hints_command & C)1323 inline 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.
swapStruct(prebound_dylib_command & C)1331 inline 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.
swapStruct(fvmfile_command & C)1340 inline 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.
swapStruct(symseg_command & C)1348 inline 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.
swapStruct(ident_command & C)1356 inline void swapStruct(ident_command &C) {
1357   sys::swapByteOrder(C.cmd);
1358   sys::swapByteOrder(C.cmdsize);
1359 }
1360 
swapStruct(fvmlib & C)1361 inline 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.
swapStruct(fvmlib_command & C)1368 inline 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 
GET_LIBRARY_ORDINAL(uint16_t n_desc)1376 inline uint16_t GET_LIBRARY_ORDINAL(uint16_t n_desc) {
1377   return (((n_desc) >> 8u) & 0xffu);
1378 }
1379 
SET_LIBRARY_ORDINAL(uint16_t & n_desc,uint8_t ordinal)1380 inline void SET_LIBRARY_ORDINAL(uint16_t &n_desc, uint8_t ordinal) {
1381   n_desc = (((n_desc)&0x00ff) | (((ordinal)&0xff) << 8));
1382 }
1383 
GET_COMM_ALIGN(uint16_t n_desc)1384 inline uint8_t GET_COMM_ALIGN(uint16_t n_desc) {
1385   return (n_desc >> 8u) & 0x0fu;
1386 }
1387 
SET_COMM_ALIGN(uint16_t & n_desc,uint8_t align)1388 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>
1393 enum : 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.
1400 enum 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 
1414 enum : 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.
1424 enum 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 };
CPU_SUBTYPE_INTEL(int Family,int Model)1452 inline int CPU_SUBTYPE_INTEL(int Family, int Model) {
1453   return Family | (Model << 4);
1454 }
CPU_SUBTYPE_INTEL_FAMILY(CPUSubTypeX86 ST)1455 inline int CPU_SUBTYPE_INTEL_FAMILY(CPUSubTypeX86 ST) {
1456   return ((int)ST) & 0x0f;
1457 }
CPU_SUBTYPE_INTEL_MODEL(CPUSubTypeX86 ST)1458 inline int CPU_SUBTYPE_INTEL_MODEL(CPUSubTypeX86 ST) { return ((int)ST) >> 4; }
1459 enum { CPU_SUBTYPE_INTEL_FAMILY_MAX = 15, CPU_SUBTYPE_INTEL_MODEL_ALL = 0 };
1460 
1461 enum CPUSubTypeARM {
1462   CPU_SUBTYPE_ARM_ALL = 0,
1463   CPU_SUBTYPE_ARM_V4T = 5,
1464   CPU_SUBTYPE_ARM_V6 = 6,
1465   CPU_SUBTYPE_ARM_V5 = 7,
1466   CPU_SUBTYPE_ARM_V5TEJ = 7,
1467   CPU_SUBTYPE_ARM_XSCALE = 8,
1468   CPU_SUBTYPE_ARM_V7 = 9,
1469   //  unused  ARM_V7F     = 10,
1470   CPU_SUBTYPE_ARM_V7S = 11,
1471   CPU_SUBTYPE_ARM_V7K = 12,
1472   CPU_SUBTYPE_ARM_V6M = 14,
1473   CPU_SUBTYPE_ARM_V7M = 15,
1474   CPU_SUBTYPE_ARM_V7EM = 16
1475 };
1476 
1477 enum CPUSubTypeARM64 { CPU_SUBTYPE_ARM64_ALL = 0 };
1478 
1479 enum CPUSubTypeSPARC { CPU_SUBTYPE_SPARC_ALL = 0 };
1480 
1481 enum CPUSubTypePowerPC {
1482   CPU_SUBTYPE_POWERPC_ALL = 0,
1483   CPU_SUBTYPE_POWERPC_601 = 1,
1484   CPU_SUBTYPE_POWERPC_602 = 2,
1485   CPU_SUBTYPE_POWERPC_603 = 3,
1486   CPU_SUBTYPE_POWERPC_603e = 4,
1487   CPU_SUBTYPE_POWERPC_603ev = 5,
1488   CPU_SUBTYPE_POWERPC_604 = 6,
1489   CPU_SUBTYPE_POWERPC_604e = 7,
1490   CPU_SUBTYPE_POWERPC_620 = 8,
1491   CPU_SUBTYPE_POWERPC_750 = 9,
1492   CPU_SUBTYPE_POWERPC_7400 = 10,
1493   CPU_SUBTYPE_POWERPC_7450 = 11,
1494   CPU_SUBTYPE_POWERPC_970 = 100,
1495 
1496   CPU_SUBTYPE_MC980000_ALL = CPU_SUBTYPE_POWERPC_ALL,
1497   CPU_SUBTYPE_MC98601 = CPU_SUBTYPE_POWERPC_601
1498 };
1499 
1500 struct x86_thread_state32_t {
1501   uint32_t eax;
1502   uint32_t ebx;
1503   uint32_t ecx;
1504   uint32_t edx;
1505   uint32_t edi;
1506   uint32_t esi;
1507   uint32_t ebp;
1508   uint32_t esp;
1509   uint32_t ss;
1510   uint32_t eflags;
1511   uint32_t eip;
1512   uint32_t cs;
1513   uint32_t ds;
1514   uint32_t es;
1515   uint32_t fs;
1516   uint32_t gs;
1517 };
1518 
1519 struct x86_thread_state64_t {
1520   uint64_t rax;
1521   uint64_t rbx;
1522   uint64_t rcx;
1523   uint64_t rdx;
1524   uint64_t rdi;
1525   uint64_t rsi;
1526   uint64_t rbp;
1527   uint64_t rsp;
1528   uint64_t r8;
1529   uint64_t r9;
1530   uint64_t r10;
1531   uint64_t r11;
1532   uint64_t r12;
1533   uint64_t r13;
1534   uint64_t r14;
1535   uint64_t r15;
1536   uint64_t rip;
1537   uint64_t rflags;
1538   uint64_t cs;
1539   uint64_t fs;
1540   uint64_t gs;
1541 };
1542 
1543 enum x86_fp_control_precis {
1544   x86_FP_PREC_24B = 0,
1545   x86_FP_PREC_53B = 2,
1546   x86_FP_PREC_64B = 3
1547 };
1548 
1549 enum x86_fp_control_rc {
1550   x86_FP_RND_NEAR = 0,
1551   x86_FP_RND_DOWN = 1,
1552   x86_FP_RND_UP = 2,
1553   x86_FP_CHOP = 3
1554 };
1555 
1556 struct fp_control_t {
1557   unsigned short invalid : 1, denorm : 1, zdiv : 1, ovrfl : 1, undfl : 1,
1558       precis : 1, : 2, pc : 2, rc : 2, : 1, : 3;
1559 };
1560 
1561 struct fp_status_t {
1562   unsigned short invalid : 1, denorm : 1, zdiv : 1, ovrfl : 1, undfl : 1,
1563       precis : 1, stkflt : 1, errsumm : 1, c0 : 1, c1 : 1, c2 : 1, tos : 3,
1564       c3 : 1, busy : 1;
1565 };
1566 
1567 struct mmst_reg_t {
1568   char mmst_reg[10];
1569   char mmst_rsrv[6];
1570 };
1571 
1572 struct xmm_reg_t {
1573   char xmm_reg[16];
1574 };
1575 
1576 struct x86_float_state64_t {
1577   int32_t fpu_reserved[2];
1578   fp_control_t fpu_fcw;
1579   fp_status_t fpu_fsw;
1580   uint8_t fpu_ftw;
1581   uint8_t fpu_rsrv1;
1582   uint16_t fpu_fop;
1583   uint32_t fpu_ip;
1584   uint16_t fpu_cs;
1585   uint16_t fpu_rsrv2;
1586   uint32_t fpu_dp;
1587   uint16_t fpu_ds;
1588   uint16_t fpu_rsrv3;
1589   uint32_t fpu_mxcsr;
1590   uint32_t fpu_mxcsrmask;
1591   mmst_reg_t fpu_stmm0;
1592   mmst_reg_t fpu_stmm1;
1593   mmst_reg_t fpu_stmm2;
1594   mmst_reg_t fpu_stmm3;
1595   mmst_reg_t fpu_stmm4;
1596   mmst_reg_t fpu_stmm5;
1597   mmst_reg_t fpu_stmm6;
1598   mmst_reg_t fpu_stmm7;
1599   xmm_reg_t fpu_xmm0;
1600   xmm_reg_t fpu_xmm1;
1601   xmm_reg_t fpu_xmm2;
1602   xmm_reg_t fpu_xmm3;
1603   xmm_reg_t fpu_xmm4;
1604   xmm_reg_t fpu_xmm5;
1605   xmm_reg_t fpu_xmm6;
1606   xmm_reg_t fpu_xmm7;
1607   xmm_reg_t fpu_xmm8;
1608   xmm_reg_t fpu_xmm9;
1609   xmm_reg_t fpu_xmm10;
1610   xmm_reg_t fpu_xmm11;
1611   xmm_reg_t fpu_xmm12;
1612   xmm_reg_t fpu_xmm13;
1613   xmm_reg_t fpu_xmm14;
1614   xmm_reg_t fpu_xmm15;
1615   char fpu_rsrv4[6 * 16];
1616   uint32_t fpu_reserved1;
1617 };
1618 
1619 struct x86_exception_state64_t {
1620   uint16_t trapno;
1621   uint16_t cpu;
1622   uint32_t err;
1623   uint64_t faultvaddr;
1624 };
1625 
swapStruct(x86_thread_state32_t & x)1626 inline void swapStruct(x86_thread_state32_t &x) {
1627   sys::swapByteOrder(x.eax);
1628   sys::swapByteOrder(x.ebx);
1629   sys::swapByteOrder(x.ecx);
1630   sys::swapByteOrder(x.edx);
1631   sys::swapByteOrder(x.edi);
1632   sys::swapByteOrder(x.esi);
1633   sys::swapByteOrder(x.ebp);
1634   sys::swapByteOrder(x.esp);
1635   sys::swapByteOrder(x.ss);
1636   sys::swapByteOrder(x.eflags);
1637   sys::swapByteOrder(x.eip);
1638   sys::swapByteOrder(x.cs);
1639   sys::swapByteOrder(x.ds);
1640   sys::swapByteOrder(x.es);
1641   sys::swapByteOrder(x.fs);
1642   sys::swapByteOrder(x.gs);
1643 }
1644 
swapStruct(x86_thread_state64_t & x)1645 inline void swapStruct(x86_thread_state64_t &x) {
1646   sys::swapByteOrder(x.rax);
1647   sys::swapByteOrder(x.rbx);
1648   sys::swapByteOrder(x.rcx);
1649   sys::swapByteOrder(x.rdx);
1650   sys::swapByteOrder(x.rdi);
1651   sys::swapByteOrder(x.rsi);
1652   sys::swapByteOrder(x.rbp);
1653   sys::swapByteOrder(x.rsp);
1654   sys::swapByteOrder(x.r8);
1655   sys::swapByteOrder(x.r9);
1656   sys::swapByteOrder(x.r10);
1657   sys::swapByteOrder(x.r11);
1658   sys::swapByteOrder(x.r12);
1659   sys::swapByteOrder(x.r13);
1660   sys::swapByteOrder(x.r14);
1661   sys::swapByteOrder(x.r15);
1662   sys::swapByteOrder(x.rip);
1663   sys::swapByteOrder(x.rflags);
1664   sys::swapByteOrder(x.cs);
1665   sys::swapByteOrder(x.fs);
1666   sys::swapByteOrder(x.gs);
1667 }
1668 
swapStruct(x86_float_state64_t & x)1669 inline void swapStruct(x86_float_state64_t &x) {
1670   sys::swapByteOrder(x.fpu_reserved[0]);
1671   sys::swapByteOrder(x.fpu_reserved[1]);
1672   // TODO swap: fp_control_t fpu_fcw;
1673   // TODO swap: fp_status_t fpu_fsw;
1674   sys::swapByteOrder(x.fpu_fop);
1675   sys::swapByteOrder(x.fpu_ip);
1676   sys::swapByteOrder(x.fpu_cs);
1677   sys::swapByteOrder(x.fpu_rsrv2);
1678   sys::swapByteOrder(x.fpu_dp);
1679   sys::swapByteOrder(x.fpu_ds);
1680   sys::swapByteOrder(x.fpu_rsrv3);
1681   sys::swapByteOrder(x.fpu_mxcsr);
1682   sys::swapByteOrder(x.fpu_mxcsrmask);
1683   sys::swapByteOrder(x.fpu_reserved1);
1684 }
1685 
swapStruct(x86_exception_state64_t & x)1686 inline void swapStruct(x86_exception_state64_t &x) {
1687   sys::swapByteOrder(x.trapno);
1688   sys::swapByteOrder(x.cpu);
1689   sys::swapByteOrder(x.err);
1690   sys::swapByteOrder(x.faultvaddr);
1691 }
1692 
1693 struct x86_state_hdr_t {
1694   uint32_t flavor;
1695   uint32_t count;
1696 };
1697 
1698 struct x86_thread_state_t {
1699   x86_state_hdr_t tsh;
1700   union {
1701     x86_thread_state64_t ts64;
1702     x86_thread_state32_t ts32;
1703   } uts;
1704 };
1705 
1706 struct x86_float_state_t {
1707   x86_state_hdr_t fsh;
1708   union {
1709     x86_float_state64_t fs64;
1710   } ufs;
1711 };
1712 
1713 struct x86_exception_state_t {
1714   x86_state_hdr_t esh;
1715   union {
1716     x86_exception_state64_t es64;
1717   } ues;
1718 };
1719 
swapStruct(x86_state_hdr_t & x)1720 inline void swapStruct(x86_state_hdr_t &x) {
1721   sys::swapByteOrder(x.flavor);
1722   sys::swapByteOrder(x.count);
1723 }
1724 
1725 enum X86ThreadFlavors {
1726   x86_THREAD_STATE32 = 1,
1727   x86_FLOAT_STATE32 = 2,
1728   x86_EXCEPTION_STATE32 = 3,
1729   x86_THREAD_STATE64 = 4,
1730   x86_FLOAT_STATE64 = 5,
1731   x86_EXCEPTION_STATE64 = 6,
1732   x86_THREAD_STATE = 7,
1733   x86_FLOAT_STATE = 8,
1734   x86_EXCEPTION_STATE = 9,
1735   x86_DEBUG_STATE32 = 10,
1736   x86_DEBUG_STATE64 = 11,
1737   x86_DEBUG_STATE = 12
1738 };
1739 
swapStruct(x86_thread_state_t & x)1740 inline void swapStruct(x86_thread_state_t &x) {
1741   swapStruct(x.tsh);
1742   if (x.tsh.flavor == x86_THREAD_STATE64)
1743     swapStruct(x.uts.ts64);
1744 }
1745 
swapStruct(x86_float_state_t & x)1746 inline void swapStruct(x86_float_state_t &x) {
1747   swapStruct(x.fsh);
1748   if (x.fsh.flavor == x86_FLOAT_STATE64)
1749     swapStruct(x.ufs.fs64);
1750 }
1751 
swapStruct(x86_exception_state_t & x)1752 inline void swapStruct(x86_exception_state_t &x) {
1753   swapStruct(x.esh);
1754   if (x.esh.flavor == x86_EXCEPTION_STATE64)
1755     swapStruct(x.ues.es64);
1756 }
1757 
1758 const uint32_t x86_THREAD_STATE32_COUNT =
1759     sizeof(x86_thread_state32_t) / sizeof(uint32_t);
1760 
1761 const uint32_t x86_THREAD_STATE64_COUNT =
1762     sizeof(x86_thread_state64_t) / sizeof(uint32_t);
1763 const uint32_t x86_FLOAT_STATE64_COUNT =
1764     sizeof(x86_float_state64_t) / sizeof(uint32_t);
1765 const uint32_t x86_EXCEPTION_STATE64_COUNT =
1766     sizeof(x86_exception_state64_t) / sizeof(uint32_t);
1767 
1768 const uint32_t x86_THREAD_STATE_COUNT =
1769     sizeof(x86_thread_state_t) / sizeof(uint32_t);
1770 const uint32_t x86_FLOAT_STATE_COUNT =
1771     sizeof(x86_float_state_t) / sizeof(uint32_t);
1772 const uint32_t x86_EXCEPTION_STATE_COUNT =
1773     sizeof(x86_exception_state_t) / sizeof(uint32_t);
1774 
1775 struct arm_thread_state32_t {
1776   uint32_t r[13];
1777   uint32_t sp;
1778   uint32_t lr;
1779   uint32_t pc;
1780   uint32_t cpsr;
1781 };
1782 
swapStruct(arm_thread_state32_t & x)1783 inline void swapStruct(arm_thread_state32_t &x) {
1784   for (int i = 0; i < 13; i++)
1785     sys::swapByteOrder(x.r[i]);
1786   sys::swapByteOrder(x.sp);
1787   sys::swapByteOrder(x.lr);
1788   sys::swapByteOrder(x.pc);
1789   sys::swapByteOrder(x.cpsr);
1790 }
1791 
1792 struct arm_thread_state64_t {
1793   uint64_t x[29];
1794   uint64_t fp;
1795   uint64_t lr;
1796   uint64_t sp;
1797   uint64_t pc;
1798   uint32_t cpsr;
1799   uint32_t pad;
1800 };
1801 
swapStruct(arm_thread_state64_t & x)1802 inline void swapStruct(arm_thread_state64_t &x) {
1803   for (int i = 0; i < 29; i++)
1804     sys::swapByteOrder(x.x[i]);
1805   sys::swapByteOrder(x.fp);
1806   sys::swapByteOrder(x.lr);
1807   sys::swapByteOrder(x.sp);
1808   sys::swapByteOrder(x.pc);
1809   sys::swapByteOrder(x.cpsr);
1810 }
1811 
1812 struct arm_state_hdr_t {
1813   uint32_t flavor;
1814   uint32_t count;
1815 };
1816 
1817 struct arm_thread_state_t {
1818   arm_state_hdr_t tsh;
1819   union {
1820     arm_thread_state32_t ts32;
1821   } uts;
1822 };
1823 
swapStruct(arm_state_hdr_t & x)1824 inline void swapStruct(arm_state_hdr_t &x) {
1825   sys::swapByteOrder(x.flavor);
1826   sys::swapByteOrder(x.count);
1827 }
1828 
1829 enum ARMThreadFlavors {
1830   ARM_THREAD_STATE = 1,
1831   ARM_VFP_STATE = 2,
1832   ARM_EXCEPTION_STATE = 3,
1833   ARM_DEBUG_STATE = 4,
1834   ARN_THREAD_STATE_NONE = 5,
1835   ARM_THREAD_STATE64 = 6,
1836   ARM_EXCEPTION_STATE64 = 7
1837 };
1838 
swapStruct(arm_thread_state_t & x)1839 inline void swapStruct(arm_thread_state_t &x) {
1840   swapStruct(x.tsh);
1841   if (x.tsh.flavor == ARM_THREAD_STATE)
1842     swapStruct(x.uts.ts32);
1843 }
1844 
1845 const uint32_t ARM_THREAD_STATE_COUNT =
1846     sizeof(arm_thread_state32_t) / sizeof(uint32_t);
1847 
1848 const uint32_t ARM_THREAD_STATE64_COUNT =
1849     sizeof(arm_thread_state64_t) / sizeof(uint32_t);
1850 
1851 struct ppc_thread_state32_t {
1852   uint32_t srr0;
1853   uint32_t srr1;
1854   uint32_t r0;
1855   uint32_t r1;
1856   uint32_t r2;
1857   uint32_t r3;
1858   uint32_t r4;
1859   uint32_t r5;
1860   uint32_t r6;
1861   uint32_t r7;
1862   uint32_t r8;
1863   uint32_t r9;
1864   uint32_t r10;
1865   uint32_t r11;
1866   uint32_t r12;
1867   uint32_t r13;
1868   uint32_t r14;
1869   uint32_t r15;
1870   uint32_t r16;
1871   uint32_t r17;
1872   uint32_t r18;
1873   uint32_t r19;
1874   uint32_t r20;
1875   uint32_t r21;
1876   uint32_t r22;
1877   uint32_t r23;
1878   uint32_t r24;
1879   uint32_t r25;
1880   uint32_t r26;
1881   uint32_t r27;
1882   uint32_t r28;
1883   uint32_t r29;
1884   uint32_t r30;
1885   uint32_t r31;
1886   uint32_t ct;
1887   uint32_t xer;
1888   uint32_t lr;
1889   uint32_t ctr;
1890   uint32_t mq;
1891   uint32_t vrsave;
1892 };
1893 
swapStruct(ppc_thread_state32_t & x)1894 inline void swapStruct(ppc_thread_state32_t &x) {
1895   sys::swapByteOrder(x.srr0);
1896   sys::swapByteOrder(x.srr1);
1897   sys::swapByteOrder(x.r0);
1898   sys::swapByteOrder(x.r1);
1899   sys::swapByteOrder(x.r2);
1900   sys::swapByteOrder(x.r3);
1901   sys::swapByteOrder(x.r4);
1902   sys::swapByteOrder(x.r5);
1903   sys::swapByteOrder(x.r6);
1904   sys::swapByteOrder(x.r7);
1905   sys::swapByteOrder(x.r8);
1906   sys::swapByteOrder(x.r9);
1907   sys::swapByteOrder(x.r10);
1908   sys::swapByteOrder(x.r11);
1909   sys::swapByteOrder(x.r12);
1910   sys::swapByteOrder(x.r13);
1911   sys::swapByteOrder(x.r14);
1912   sys::swapByteOrder(x.r15);
1913   sys::swapByteOrder(x.r16);
1914   sys::swapByteOrder(x.r17);
1915   sys::swapByteOrder(x.r18);
1916   sys::swapByteOrder(x.r19);
1917   sys::swapByteOrder(x.r20);
1918   sys::swapByteOrder(x.r21);
1919   sys::swapByteOrder(x.r22);
1920   sys::swapByteOrder(x.r23);
1921   sys::swapByteOrder(x.r24);
1922   sys::swapByteOrder(x.r25);
1923   sys::swapByteOrder(x.r26);
1924   sys::swapByteOrder(x.r27);
1925   sys::swapByteOrder(x.r28);
1926   sys::swapByteOrder(x.r29);
1927   sys::swapByteOrder(x.r30);
1928   sys::swapByteOrder(x.r31);
1929   sys::swapByteOrder(x.ct);
1930   sys::swapByteOrder(x.xer);
1931   sys::swapByteOrder(x.lr);
1932   sys::swapByteOrder(x.ctr);
1933   sys::swapByteOrder(x.mq);
1934   sys::swapByteOrder(x.vrsave);
1935 }
1936 
1937 struct ppc_state_hdr_t {
1938   uint32_t flavor;
1939   uint32_t count;
1940 };
1941 
1942 struct ppc_thread_state_t {
1943   ppc_state_hdr_t tsh;
1944   union {
1945     ppc_thread_state32_t ts32;
1946   } uts;
1947 };
1948 
swapStruct(ppc_state_hdr_t & x)1949 inline void swapStruct(ppc_state_hdr_t &x) {
1950   sys::swapByteOrder(x.flavor);
1951   sys::swapByteOrder(x.count);
1952 }
1953 
1954 enum PPCThreadFlavors {
1955   PPC_THREAD_STATE = 1,
1956   PPC_FLOAT_STATE = 2,
1957   PPC_EXCEPTION_STATE = 3,
1958   PPC_VECTOR_STATE = 4,
1959   PPC_THREAD_STATE64 = 5,
1960   PPC_EXCEPTION_STATE64 = 6,
1961   PPC_THREAD_STATE_NONE = 7
1962 };
1963 
swapStruct(ppc_thread_state_t & x)1964 inline void swapStruct(ppc_thread_state_t &x) {
1965   swapStruct(x.tsh);
1966   if (x.tsh.flavor == PPC_THREAD_STATE)
1967     swapStruct(x.uts.ts32);
1968 }
1969 
1970 const uint32_t PPC_THREAD_STATE_COUNT =
1971     sizeof(ppc_thread_state32_t) / sizeof(uint32_t);
1972 
1973 // Define a union of all load command structs
1974 #define LOAD_COMMAND_STRUCT(LCStruct) LCStruct LCStruct##_data;
1975 
1976 LLVM_PACKED_START
1977 union alignas(4) macho_load_command {
1978 #include "llvm/BinaryFormat/MachO.def"
1979 };
1980 LLVM_PACKED_END
1981 
1982 } // end namespace MachO
1983 } // end namespace llvm
1984 
1985 #endif
1986