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   PLATFORM_IOSSIMULATOR = 7,
491   PLATFORM_TVOSSIMULATOR = 8,
492   PLATFORM_WATCHOSSIMULATOR = 9
493 };
494 
495 // Values for tools enum in build_tool_version.
496 enum { TOOL_CLANG = 1, TOOL_SWIFT = 2, TOOL_LD = 3 };
497 
498 // Structs from <mach-o/loader.h>
499 
500 struct mach_header {
501   uint32_t magic;
502   uint32_t cputype;
503   uint32_t cpusubtype;
504   uint32_t filetype;
505   uint32_t ncmds;
506   uint32_t sizeofcmds;
507   uint32_t flags;
508 };
509 
510 struct mach_header_64 {
511   uint32_t magic;
512   uint32_t cputype;
513   uint32_t cpusubtype;
514   uint32_t filetype;
515   uint32_t ncmds;
516   uint32_t sizeofcmds;
517   uint32_t flags;
518   uint32_t reserved;
519 };
520 
521 struct load_command {
522   uint32_t cmd;
523   uint32_t cmdsize;
524 };
525 
526 struct segment_command {
527   uint32_t cmd;
528   uint32_t cmdsize;
529   char segname[16];
530   uint32_t vmaddr;
531   uint32_t vmsize;
532   uint32_t fileoff;
533   uint32_t filesize;
534   uint32_t maxprot;
535   uint32_t initprot;
536   uint32_t nsects;
537   uint32_t flags;
538 };
539 
540 struct segment_command_64 {
541   uint32_t cmd;
542   uint32_t cmdsize;
543   char segname[16];
544   uint64_t vmaddr;
545   uint64_t vmsize;
546   uint64_t fileoff;
547   uint64_t filesize;
548   uint32_t maxprot;
549   uint32_t initprot;
550   uint32_t nsects;
551   uint32_t flags;
552 };
553 
554 struct section {
555   char sectname[16];
556   char segname[16];
557   uint32_t addr;
558   uint32_t size;
559   uint32_t offset;
560   uint32_t align;
561   uint32_t reloff;
562   uint32_t nreloc;
563   uint32_t flags;
564   uint32_t reserved1;
565   uint32_t reserved2;
566 };
567 
568 struct section_64 {
569   char sectname[16];
570   char segname[16];
571   uint64_t addr;
572   uint64_t size;
573   uint32_t offset;
574   uint32_t align;
575   uint32_t reloff;
576   uint32_t nreloc;
577   uint32_t flags;
578   uint32_t reserved1;
579   uint32_t reserved2;
580   uint32_t reserved3;
581 };
582 
583 struct fvmlib {
584   uint32_t name;
585   uint32_t minor_version;
586   uint32_t header_addr;
587 };
588 
589 // The fvmlib_command is obsolete and no longer supported.
590 struct fvmlib_command {
591   uint32_t cmd;
592   uint32_t cmdsize;
593   struct fvmlib fvmlib;
594 };
595 
596 struct dylib {
597   uint32_t name;
598   uint32_t timestamp;
599   uint32_t current_version;
600   uint32_t compatibility_version;
601 };
602 
603 struct dylib_command {
604   uint32_t cmd;
605   uint32_t cmdsize;
606   struct dylib dylib;
607 };
608 
609 struct sub_framework_command {
610   uint32_t cmd;
611   uint32_t cmdsize;
612   uint32_t umbrella;
613 };
614 
615 struct sub_client_command {
616   uint32_t cmd;
617   uint32_t cmdsize;
618   uint32_t client;
619 };
620 
621 struct sub_umbrella_command {
622   uint32_t cmd;
623   uint32_t cmdsize;
624   uint32_t sub_umbrella;
625 };
626 
627 struct sub_library_command {
628   uint32_t cmd;
629   uint32_t cmdsize;
630   uint32_t sub_library;
631 };
632 
633 // The prebound_dylib_command is obsolete and no longer supported.
634 struct prebound_dylib_command {
635   uint32_t cmd;
636   uint32_t cmdsize;
637   uint32_t name;
638   uint32_t nmodules;
639   uint32_t linked_modules;
640 };
641 
642 struct dylinker_command {
643   uint32_t cmd;
644   uint32_t cmdsize;
645   uint32_t name;
646 };
647 
648 struct thread_command {
649   uint32_t cmd;
650   uint32_t cmdsize;
651 };
652 
653 struct routines_command {
654   uint32_t cmd;
655   uint32_t cmdsize;
656   uint32_t init_address;
657   uint32_t init_module;
658   uint32_t reserved1;
659   uint32_t reserved2;
660   uint32_t reserved3;
661   uint32_t reserved4;
662   uint32_t reserved5;
663   uint32_t reserved6;
664 };
665 
666 struct routines_command_64 {
667   uint32_t cmd;
668   uint32_t cmdsize;
669   uint64_t init_address;
670   uint64_t init_module;
671   uint64_t reserved1;
672   uint64_t reserved2;
673   uint64_t reserved3;
674   uint64_t reserved4;
675   uint64_t reserved5;
676   uint64_t reserved6;
677 };
678 
679 struct symtab_command {
680   uint32_t cmd;
681   uint32_t cmdsize;
682   uint32_t symoff;
683   uint32_t nsyms;
684   uint32_t stroff;
685   uint32_t strsize;
686 };
687 
688 struct dysymtab_command {
689   uint32_t cmd;
690   uint32_t cmdsize;
691   uint32_t ilocalsym;
692   uint32_t nlocalsym;
693   uint32_t iextdefsym;
694   uint32_t nextdefsym;
695   uint32_t iundefsym;
696   uint32_t nundefsym;
697   uint32_t tocoff;
698   uint32_t ntoc;
699   uint32_t modtaboff;
700   uint32_t nmodtab;
701   uint32_t extrefsymoff;
702   uint32_t nextrefsyms;
703   uint32_t indirectsymoff;
704   uint32_t nindirectsyms;
705   uint32_t extreloff;
706   uint32_t nextrel;
707   uint32_t locreloff;
708   uint32_t nlocrel;
709 };
710 
711 struct dylib_table_of_contents {
712   uint32_t symbol_index;
713   uint32_t module_index;
714 };
715 
716 struct dylib_module {
717   uint32_t module_name;
718   uint32_t iextdefsym;
719   uint32_t nextdefsym;
720   uint32_t irefsym;
721   uint32_t nrefsym;
722   uint32_t ilocalsym;
723   uint32_t nlocalsym;
724   uint32_t iextrel;
725   uint32_t nextrel;
726   uint32_t iinit_iterm;
727   uint32_t ninit_nterm;
728   uint32_t objc_module_info_addr;
729   uint32_t objc_module_info_size;
730 };
731 
732 struct dylib_module_64 {
733   uint32_t module_name;
734   uint32_t iextdefsym;
735   uint32_t nextdefsym;
736   uint32_t irefsym;
737   uint32_t nrefsym;
738   uint32_t ilocalsym;
739   uint32_t nlocalsym;
740   uint32_t iextrel;
741   uint32_t nextrel;
742   uint32_t iinit_iterm;
743   uint32_t ninit_nterm;
744   uint32_t objc_module_info_size;
745   uint64_t objc_module_info_addr;
746 };
747 
748 struct dylib_reference {
749   uint32_t isym : 24, flags : 8;
750 };
751 
752 // The twolevel_hints_command is obsolete and no longer supported.
753 struct twolevel_hints_command {
754   uint32_t cmd;
755   uint32_t cmdsize;
756   uint32_t offset;
757   uint32_t nhints;
758 };
759 
760 // The twolevel_hints_command is obsolete and no longer supported.
761 struct twolevel_hint {
762   uint32_t isub_image : 8, itoc : 24;
763 };
764 
765 // The prebind_cksum_command is obsolete and no longer supported.
766 struct prebind_cksum_command {
767   uint32_t cmd;
768   uint32_t cmdsize;
769   uint32_t cksum;
770 };
771 
772 struct uuid_command {
773   uint32_t cmd;
774   uint32_t cmdsize;
775   uint8_t uuid[16];
776 };
777 
778 struct rpath_command {
779   uint32_t cmd;
780   uint32_t cmdsize;
781   uint32_t path;
782 };
783 
784 struct linkedit_data_command {
785   uint32_t cmd;
786   uint32_t cmdsize;
787   uint32_t dataoff;
788   uint32_t datasize;
789 };
790 
791 struct data_in_code_entry {
792   uint32_t offset;
793   uint16_t length;
794   uint16_t kind;
795 };
796 
797 struct source_version_command {
798   uint32_t cmd;
799   uint32_t cmdsize;
800   uint64_t version;
801 };
802 
803 struct encryption_info_command {
804   uint32_t cmd;
805   uint32_t cmdsize;
806   uint32_t cryptoff;
807   uint32_t cryptsize;
808   uint32_t cryptid;
809 };
810 
811 struct encryption_info_command_64 {
812   uint32_t cmd;
813   uint32_t cmdsize;
814   uint32_t cryptoff;
815   uint32_t cryptsize;
816   uint32_t cryptid;
817   uint32_t pad;
818 };
819 
820 struct version_min_command {
821   uint32_t cmd;     // LC_VERSION_MIN_MACOSX or
822                     // LC_VERSION_MIN_IPHONEOS
823   uint32_t cmdsize; // sizeof(struct version_min_command)
824   uint32_t version; // X.Y.Z is encoded in nibbles xxxx.yy.zz
825   uint32_t sdk;     // X.Y.Z is encoded in nibbles xxxx.yy.zz
826 };
827 
828 struct note_command {
829   uint32_t cmd;        // LC_NOTE
830   uint32_t cmdsize;    // sizeof(struct note_command)
831   char data_owner[16]; // owner name for this LC_NOTE
832   uint64_t offset;     // file offset of this data
833   uint64_t size;       // length of data region
834 };
835 
836 struct build_tool_version {
837   uint32_t tool;    // enum for the tool
838   uint32_t version; // version of the tool
839 };
840 
841 struct build_version_command {
842   uint32_t cmd;      // LC_BUILD_VERSION
843   uint32_t cmdsize;  // sizeof(struct build_version_command) +
844                      // ntools * sizeof(struct build_tool_version)
845   uint32_t platform; // platform
846   uint32_t minos;    // X.Y.Z is encoded in nibbles xxxx.yy.zz
847   uint32_t sdk;      // X.Y.Z is encoded in nibbles xxxx.yy.zz
848   uint32_t ntools;   // number of tool entries following this
849 };
850 
851 struct dyld_info_command {
852   uint32_t cmd;
853   uint32_t cmdsize;
854   uint32_t rebase_off;
855   uint32_t rebase_size;
856   uint32_t bind_off;
857   uint32_t bind_size;
858   uint32_t weak_bind_off;
859   uint32_t weak_bind_size;
860   uint32_t lazy_bind_off;
861   uint32_t lazy_bind_size;
862   uint32_t export_off;
863   uint32_t export_size;
864 };
865 
866 struct linker_option_command {
867   uint32_t cmd;
868   uint32_t cmdsize;
869   uint32_t count;
870 };
871 
872 // The symseg_command is obsolete and no longer supported.
873 struct symseg_command {
874   uint32_t cmd;
875   uint32_t cmdsize;
876   uint32_t offset;
877   uint32_t size;
878 };
879 
880 // The ident_command is obsolete and no longer supported.
881 struct ident_command {
882   uint32_t cmd;
883   uint32_t cmdsize;
884 };
885 
886 // The fvmfile_command is obsolete and no longer supported.
887 struct fvmfile_command {
888   uint32_t cmd;
889   uint32_t cmdsize;
890   uint32_t name;
891   uint32_t header_addr;
892 };
893 
894 struct tlv_descriptor_32 {
895   uint32_t thunk;
896   uint32_t key;
897   uint32_t offset;
898 };
899 
900 struct tlv_descriptor_64 {
901   uint64_t thunk;
902   uint64_t key;
903   uint64_t offset;
904 };
905 
906 struct tlv_descriptor {
907   uintptr_t thunk;
908   uintptr_t key;
909   uintptr_t offset;
910 };
911 
912 struct entry_point_command {
913   uint32_t cmd;
914   uint32_t cmdsize;
915   uint64_t entryoff;
916   uint64_t stacksize;
917 };
918 
919 // Structs from <mach-o/fat.h>
920 struct fat_header {
921   uint32_t magic;
922   uint32_t nfat_arch;
923 };
924 
925 struct fat_arch {
926   uint32_t cputype;
927   uint32_t cpusubtype;
928   uint32_t offset;
929   uint32_t size;
930   uint32_t align;
931 };
932 
933 struct fat_arch_64 {
934   uint32_t cputype;
935   uint32_t cpusubtype;
936   uint64_t offset;
937   uint64_t size;
938   uint32_t align;
939   uint32_t reserved;
940 };
941 
942 // Structs from <mach-o/reloc.h>
943 struct relocation_info {
944   int32_t r_address;
945   uint32_t r_symbolnum : 24, r_pcrel : 1, r_length : 2, r_extern : 1,
946       r_type : 4;
947 };
948 
949 struct scattered_relocation_info {
950 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && (BYTE_ORDER == BIG_ENDIAN)
951   uint32_t r_scattered : 1, r_pcrel : 1, r_length : 2, r_type : 4,
952       r_address : 24;
953 #else
954   uint32_t r_address : 24, r_type : 4, r_length : 2, r_pcrel : 1,
955       r_scattered : 1;
956 #endif
957   int32_t r_value;
958 };
959 
960 // Structs NOT from <mach-o/reloc.h>, but that make LLVM's life easier
961 struct any_relocation_info {
962   uint32_t r_word0, r_word1;
963 };
964 
965 // Structs from <mach-o/nlist.h>
966 struct nlist_base {
967   uint32_t n_strx;
968   uint8_t n_type;
969   uint8_t n_sect;
970   uint16_t n_desc;
971 };
972 
973 struct nlist {
974   uint32_t n_strx;
975   uint8_t n_type;
976   uint8_t n_sect;
977   int16_t n_desc;
978   uint32_t n_value;
979 };
980 
981 struct nlist_64 {
982   uint32_t n_strx;
983   uint8_t n_type;
984   uint8_t n_sect;
985   uint16_t n_desc;
986   uint64_t n_value;
987 };
988 
989 // Byte order swapping functions for MachO structs
990 
swapStruct(fat_header & mh)991 inline void swapStruct(fat_header &mh) {
992   sys::swapByteOrder(mh.magic);
993   sys::swapByteOrder(mh.nfat_arch);
994 }
995 
swapStruct(fat_arch & mh)996 inline void swapStruct(fat_arch &mh) {
997   sys::swapByteOrder(mh.cputype);
998   sys::swapByteOrder(mh.cpusubtype);
999   sys::swapByteOrder(mh.offset);
1000   sys::swapByteOrder(mh.size);
1001   sys::swapByteOrder(mh.align);
1002 }
1003 
swapStruct(fat_arch_64 & mh)1004 inline void swapStruct(fat_arch_64 &mh) {
1005   sys::swapByteOrder(mh.cputype);
1006   sys::swapByteOrder(mh.cpusubtype);
1007   sys::swapByteOrder(mh.offset);
1008   sys::swapByteOrder(mh.size);
1009   sys::swapByteOrder(mh.align);
1010   sys::swapByteOrder(mh.reserved);
1011 }
1012 
swapStruct(mach_header & mh)1013 inline void swapStruct(mach_header &mh) {
1014   sys::swapByteOrder(mh.magic);
1015   sys::swapByteOrder(mh.cputype);
1016   sys::swapByteOrder(mh.cpusubtype);
1017   sys::swapByteOrder(mh.filetype);
1018   sys::swapByteOrder(mh.ncmds);
1019   sys::swapByteOrder(mh.sizeofcmds);
1020   sys::swapByteOrder(mh.flags);
1021 }
1022 
swapStruct(mach_header_64 & H)1023 inline void swapStruct(mach_header_64 &H) {
1024   sys::swapByteOrder(H.magic);
1025   sys::swapByteOrder(H.cputype);
1026   sys::swapByteOrder(H.cpusubtype);
1027   sys::swapByteOrder(H.filetype);
1028   sys::swapByteOrder(H.ncmds);
1029   sys::swapByteOrder(H.sizeofcmds);
1030   sys::swapByteOrder(H.flags);
1031   sys::swapByteOrder(H.reserved);
1032 }
1033 
swapStruct(load_command & lc)1034 inline void swapStruct(load_command &lc) {
1035   sys::swapByteOrder(lc.cmd);
1036   sys::swapByteOrder(lc.cmdsize);
1037 }
1038 
swapStruct(symtab_command & lc)1039 inline void swapStruct(symtab_command &lc) {
1040   sys::swapByteOrder(lc.cmd);
1041   sys::swapByteOrder(lc.cmdsize);
1042   sys::swapByteOrder(lc.symoff);
1043   sys::swapByteOrder(lc.nsyms);
1044   sys::swapByteOrder(lc.stroff);
1045   sys::swapByteOrder(lc.strsize);
1046 }
1047 
swapStruct(segment_command_64 & seg)1048 inline void swapStruct(segment_command_64 &seg) {
1049   sys::swapByteOrder(seg.cmd);
1050   sys::swapByteOrder(seg.cmdsize);
1051   sys::swapByteOrder(seg.vmaddr);
1052   sys::swapByteOrder(seg.vmsize);
1053   sys::swapByteOrder(seg.fileoff);
1054   sys::swapByteOrder(seg.filesize);
1055   sys::swapByteOrder(seg.maxprot);
1056   sys::swapByteOrder(seg.initprot);
1057   sys::swapByteOrder(seg.nsects);
1058   sys::swapByteOrder(seg.flags);
1059 }
1060 
swapStruct(segment_command & seg)1061 inline void swapStruct(segment_command &seg) {
1062   sys::swapByteOrder(seg.cmd);
1063   sys::swapByteOrder(seg.cmdsize);
1064   sys::swapByteOrder(seg.vmaddr);
1065   sys::swapByteOrder(seg.vmsize);
1066   sys::swapByteOrder(seg.fileoff);
1067   sys::swapByteOrder(seg.filesize);
1068   sys::swapByteOrder(seg.maxprot);
1069   sys::swapByteOrder(seg.initprot);
1070   sys::swapByteOrder(seg.nsects);
1071   sys::swapByteOrder(seg.flags);
1072 }
1073 
swapStruct(section_64 & sect)1074 inline void swapStruct(section_64 &sect) {
1075   sys::swapByteOrder(sect.addr);
1076   sys::swapByteOrder(sect.size);
1077   sys::swapByteOrder(sect.offset);
1078   sys::swapByteOrder(sect.align);
1079   sys::swapByteOrder(sect.reloff);
1080   sys::swapByteOrder(sect.nreloc);
1081   sys::swapByteOrder(sect.flags);
1082   sys::swapByteOrder(sect.reserved1);
1083   sys::swapByteOrder(sect.reserved2);
1084 }
1085 
swapStruct(section & sect)1086 inline void swapStruct(section &sect) {
1087   sys::swapByteOrder(sect.addr);
1088   sys::swapByteOrder(sect.size);
1089   sys::swapByteOrder(sect.offset);
1090   sys::swapByteOrder(sect.align);
1091   sys::swapByteOrder(sect.reloff);
1092   sys::swapByteOrder(sect.nreloc);
1093   sys::swapByteOrder(sect.flags);
1094   sys::swapByteOrder(sect.reserved1);
1095   sys::swapByteOrder(sect.reserved2);
1096 }
1097 
swapStruct(dyld_info_command & info)1098 inline void swapStruct(dyld_info_command &info) {
1099   sys::swapByteOrder(info.cmd);
1100   sys::swapByteOrder(info.cmdsize);
1101   sys::swapByteOrder(info.rebase_off);
1102   sys::swapByteOrder(info.rebase_size);
1103   sys::swapByteOrder(info.bind_off);
1104   sys::swapByteOrder(info.bind_size);
1105   sys::swapByteOrder(info.weak_bind_off);
1106   sys::swapByteOrder(info.weak_bind_size);
1107   sys::swapByteOrder(info.lazy_bind_off);
1108   sys::swapByteOrder(info.lazy_bind_size);
1109   sys::swapByteOrder(info.export_off);
1110   sys::swapByteOrder(info.export_size);
1111 }
1112 
swapStruct(dylib_command & d)1113 inline void swapStruct(dylib_command &d) {
1114   sys::swapByteOrder(d.cmd);
1115   sys::swapByteOrder(d.cmdsize);
1116   sys::swapByteOrder(d.dylib.name);
1117   sys::swapByteOrder(d.dylib.timestamp);
1118   sys::swapByteOrder(d.dylib.current_version);
1119   sys::swapByteOrder(d.dylib.compatibility_version);
1120 }
1121 
swapStruct(sub_framework_command & s)1122 inline void swapStruct(sub_framework_command &s) {
1123   sys::swapByteOrder(s.cmd);
1124   sys::swapByteOrder(s.cmdsize);
1125   sys::swapByteOrder(s.umbrella);
1126 }
1127 
swapStruct(sub_umbrella_command & s)1128 inline void swapStruct(sub_umbrella_command &s) {
1129   sys::swapByteOrder(s.cmd);
1130   sys::swapByteOrder(s.cmdsize);
1131   sys::swapByteOrder(s.sub_umbrella);
1132 }
1133 
swapStruct(sub_library_command & s)1134 inline void swapStruct(sub_library_command &s) {
1135   sys::swapByteOrder(s.cmd);
1136   sys::swapByteOrder(s.cmdsize);
1137   sys::swapByteOrder(s.sub_library);
1138 }
1139 
swapStruct(sub_client_command & s)1140 inline void swapStruct(sub_client_command &s) {
1141   sys::swapByteOrder(s.cmd);
1142   sys::swapByteOrder(s.cmdsize);
1143   sys::swapByteOrder(s.client);
1144 }
1145 
swapStruct(routines_command & r)1146 inline void swapStruct(routines_command &r) {
1147   sys::swapByteOrder(r.cmd);
1148   sys::swapByteOrder(r.cmdsize);
1149   sys::swapByteOrder(r.init_address);
1150   sys::swapByteOrder(r.init_module);
1151   sys::swapByteOrder(r.reserved1);
1152   sys::swapByteOrder(r.reserved2);
1153   sys::swapByteOrder(r.reserved3);
1154   sys::swapByteOrder(r.reserved4);
1155   sys::swapByteOrder(r.reserved5);
1156   sys::swapByteOrder(r.reserved6);
1157 }
1158 
swapStruct(routines_command_64 & r)1159 inline void swapStruct(routines_command_64 &r) {
1160   sys::swapByteOrder(r.cmd);
1161   sys::swapByteOrder(r.cmdsize);
1162   sys::swapByteOrder(r.init_address);
1163   sys::swapByteOrder(r.init_module);
1164   sys::swapByteOrder(r.reserved1);
1165   sys::swapByteOrder(r.reserved2);
1166   sys::swapByteOrder(r.reserved3);
1167   sys::swapByteOrder(r.reserved4);
1168   sys::swapByteOrder(r.reserved5);
1169   sys::swapByteOrder(r.reserved6);
1170 }
1171 
swapStruct(thread_command & t)1172 inline void swapStruct(thread_command &t) {
1173   sys::swapByteOrder(t.cmd);
1174   sys::swapByteOrder(t.cmdsize);
1175 }
1176 
swapStruct(dylinker_command & d)1177 inline void swapStruct(dylinker_command &d) {
1178   sys::swapByteOrder(d.cmd);
1179   sys::swapByteOrder(d.cmdsize);
1180   sys::swapByteOrder(d.name);
1181 }
1182 
swapStruct(uuid_command & u)1183 inline void swapStruct(uuid_command &u) {
1184   sys::swapByteOrder(u.cmd);
1185   sys::swapByteOrder(u.cmdsize);
1186 }
1187 
swapStruct(rpath_command & r)1188 inline void swapStruct(rpath_command &r) {
1189   sys::swapByteOrder(r.cmd);
1190   sys::swapByteOrder(r.cmdsize);
1191   sys::swapByteOrder(r.path);
1192 }
1193 
swapStruct(source_version_command & s)1194 inline void swapStruct(source_version_command &s) {
1195   sys::swapByteOrder(s.cmd);
1196   sys::swapByteOrder(s.cmdsize);
1197   sys::swapByteOrder(s.version);
1198 }
1199 
swapStruct(entry_point_command & e)1200 inline void swapStruct(entry_point_command &e) {
1201   sys::swapByteOrder(e.cmd);
1202   sys::swapByteOrder(e.cmdsize);
1203   sys::swapByteOrder(e.entryoff);
1204   sys::swapByteOrder(e.stacksize);
1205 }
1206 
swapStruct(encryption_info_command & e)1207 inline void swapStruct(encryption_info_command &e) {
1208   sys::swapByteOrder(e.cmd);
1209   sys::swapByteOrder(e.cmdsize);
1210   sys::swapByteOrder(e.cryptoff);
1211   sys::swapByteOrder(e.cryptsize);
1212   sys::swapByteOrder(e.cryptid);
1213 }
1214 
swapStruct(encryption_info_command_64 & e)1215 inline void swapStruct(encryption_info_command_64 &e) {
1216   sys::swapByteOrder(e.cmd);
1217   sys::swapByteOrder(e.cmdsize);
1218   sys::swapByteOrder(e.cryptoff);
1219   sys::swapByteOrder(e.cryptsize);
1220   sys::swapByteOrder(e.cryptid);
1221   sys::swapByteOrder(e.pad);
1222 }
1223 
swapStruct(dysymtab_command & dst)1224 inline void swapStruct(dysymtab_command &dst) {
1225   sys::swapByteOrder(dst.cmd);
1226   sys::swapByteOrder(dst.cmdsize);
1227   sys::swapByteOrder(dst.ilocalsym);
1228   sys::swapByteOrder(dst.nlocalsym);
1229   sys::swapByteOrder(dst.iextdefsym);
1230   sys::swapByteOrder(dst.nextdefsym);
1231   sys::swapByteOrder(dst.iundefsym);
1232   sys::swapByteOrder(dst.nundefsym);
1233   sys::swapByteOrder(dst.tocoff);
1234   sys::swapByteOrder(dst.ntoc);
1235   sys::swapByteOrder(dst.modtaboff);
1236   sys::swapByteOrder(dst.nmodtab);
1237   sys::swapByteOrder(dst.extrefsymoff);
1238   sys::swapByteOrder(dst.nextrefsyms);
1239   sys::swapByteOrder(dst.indirectsymoff);
1240   sys::swapByteOrder(dst.nindirectsyms);
1241   sys::swapByteOrder(dst.extreloff);
1242   sys::swapByteOrder(dst.nextrel);
1243   sys::swapByteOrder(dst.locreloff);
1244   sys::swapByteOrder(dst.nlocrel);
1245 }
1246 
swapStruct(any_relocation_info & reloc)1247 inline void swapStruct(any_relocation_info &reloc) {
1248   sys::swapByteOrder(reloc.r_word0);
1249   sys::swapByteOrder(reloc.r_word1);
1250 }
1251 
swapStruct(nlist_base & S)1252 inline void swapStruct(nlist_base &S) {
1253   sys::swapByteOrder(S.n_strx);
1254   sys::swapByteOrder(S.n_desc);
1255 }
1256 
swapStruct(nlist & sym)1257 inline void swapStruct(nlist &sym) {
1258   sys::swapByteOrder(sym.n_strx);
1259   sys::swapByteOrder(sym.n_desc);
1260   sys::swapByteOrder(sym.n_value);
1261 }
1262 
swapStruct(nlist_64 & sym)1263 inline void swapStruct(nlist_64 &sym) {
1264   sys::swapByteOrder(sym.n_strx);
1265   sys::swapByteOrder(sym.n_desc);
1266   sys::swapByteOrder(sym.n_value);
1267 }
1268 
swapStruct(linkedit_data_command & C)1269 inline void swapStruct(linkedit_data_command &C) {
1270   sys::swapByteOrder(C.cmd);
1271   sys::swapByteOrder(C.cmdsize);
1272   sys::swapByteOrder(C.dataoff);
1273   sys::swapByteOrder(C.datasize);
1274 }
1275 
swapStruct(linker_option_command & C)1276 inline void swapStruct(linker_option_command &C) {
1277   sys::swapByteOrder(C.cmd);
1278   sys::swapByteOrder(C.cmdsize);
1279   sys::swapByteOrder(C.count);
1280 }
1281 
swapStruct(version_min_command & C)1282 inline void swapStruct(version_min_command &C) {
1283   sys::swapByteOrder(C.cmd);
1284   sys::swapByteOrder(C.cmdsize);
1285   sys::swapByteOrder(C.version);
1286   sys::swapByteOrder(C.sdk);
1287 }
1288 
swapStruct(note_command & C)1289 inline void swapStruct(note_command &C) {
1290   sys::swapByteOrder(C.cmd);
1291   sys::swapByteOrder(C.cmdsize);
1292   sys::swapByteOrder(C.offset);
1293   sys::swapByteOrder(C.size);
1294 }
1295 
swapStruct(build_version_command & C)1296 inline void swapStruct(build_version_command &C) {
1297   sys::swapByteOrder(C.cmd);
1298   sys::swapByteOrder(C.cmdsize);
1299   sys::swapByteOrder(C.platform);
1300   sys::swapByteOrder(C.minos);
1301   sys::swapByteOrder(C.sdk);
1302   sys::swapByteOrder(C.ntools);
1303 }
1304 
swapStruct(build_tool_version & C)1305 inline void swapStruct(build_tool_version &C) {
1306   sys::swapByteOrder(C.tool);
1307   sys::swapByteOrder(C.version);
1308 }
1309 
swapStruct(data_in_code_entry & C)1310 inline void swapStruct(data_in_code_entry &C) {
1311   sys::swapByteOrder(C.offset);
1312   sys::swapByteOrder(C.length);
1313   sys::swapByteOrder(C.kind);
1314 }
1315 
swapStruct(uint32_t & C)1316 inline void swapStruct(uint32_t &C) { sys::swapByteOrder(C); }
1317 
1318 // The prebind_cksum_command is obsolete and no longer supported.
swapStruct(prebind_cksum_command & C)1319 inline void swapStruct(prebind_cksum_command &C) {
1320   sys::swapByteOrder(C.cmd);
1321   sys::swapByteOrder(C.cmdsize);
1322   sys::swapByteOrder(C.cksum);
1323 }
1324 
1325 // The twolevel_hints_command is obsolete and no longer supported.
swapStruct(twolevel_hints_command & C)1326 inline void swapStruct(twolevel_hints_command &C) {
1327   sys::swapByteOrder(C.cmd);
1328   sys::swapByteOrder(C.cmdsize);
1329   sys::swapByteOrder(C.offset);
1330   sys::swapByteOrder(C.nhints);
1331 }
1332 
1333 // The prebound_dylib_command is obsolete and no longer supported.
swapStruct(prebound_dylib_command & C)1334 inline void swapStruct(prebound_dylib_command &C) {
1335   sys::swapByteOrder(C.cmd);
1336   sys::swapByteOrder(C.cmdsize);
1337   sys::swapByteOrder(C.name);
1338   sys::swapByteOrder(C.nmodules);
1339   sys::swapByteOrder(C.linked_modules);
1340 }
1341 
1342 // The fvmfile_command is obsolete and no longer supported.
swapStruct(fvmfile_command & C)1343 inline void swapStruct(fvmfile_command &C) {
1344   sys::swapByteOrder(C.cmd);
1345   sys::swapByteOrder(C.cmdsize);
1346   sys::swapByteOrder(C.name);
1347   sys::swapByteOrder(C.header_addr);
1348 }
1349 
1350 // The symseg_command is obsolete and no longer supported.
swapStruct(symseg_command & C)1351 inline void swapStruct(symseg_command &C) {
1352   sys::swapByteOrder(C.cmd);
1353   sys::swapByteOrder(C.cmdsize);
1354   sys::swapByteOrder(C.offset);
1355   sys::swapByteOrder(C.size);
1356 }
1357 
1358 // The ident_command is obsolete and no longer supported.
swapStruct(ident_command & C)1359 inline void swapStruct(ident_command &C) {
1360   sys::swapByteOrder(C.cmd);
1361   sys::swapByteOrder(C.cmdsize);
1362 }
1363 
swapStruct(fvmlib & C)1364 inline void swapStruct(fvmlib &C) {
1365   sys::swapByteOrder(C.name);
1366   sys::swapByteOrder(C.minor_version);
1367   sys::swapByteOrder(C.header_addr);
1368 }
1369 
1370 // The fvmlib_command is obsolete and no longer supported.
swapStruct(fvmlib_command & C)1371 inline void swapStruct(fvmlib_command &C) {
1372   sys::swapByteOrder(C.cmd);
1373   sys::swapByteOrder(C.cmdsize);
1374   swapStruct(C.fvmlib);
1375 }
1376 
1377 // Get/Set functions from <mach-o/nlist.h>
1378 
GET_LIBRARY_ORDINAL(uint16_t n_desc)1379 inline uint16_t GET_LIBRARY_ORDINAL(uint16_t n_desc) {
1380   return (((n_desc) >> 8u) & 0xffu);
1381 }
1382 
SET_LIBRARY_ORDINAL(uint16_t & n_desc,uint8_t ordinal)1383 inline void SET_LIBRARY_ORDINAL(uint16_t &n_desc, uint8_t ordinal) {
1384   n_desc = (((n_desc)&0x00ff) | (((ordinal)&0xff) << 8));
1385 }
1386 
GET_COMM_ALIGN(uint16_t n_desc)1387 inline uint8_t GET_COMM_ALIGN(uint16_t n_desc) {
1388   return (n_desc >> 8u) & 0x0fu;
1389 }
1390 
SET_COMM_ALIGN(uint16_t & n_desc,uint8_t align)1391 inline void SET_COMM_ALIGN(uint16_t &n_desc, uint8_t align) {
1392   n_desc = ((n_desc & 0xf0ffu) | ((align & 0x0fu) << 8u));
1393 }
1394 
1395 // Enums from <mach/machine.h>
1396 enum : uint32_t {
1397   // Capability bits used in the definition of cpu_type.
1398   CPU_ARCH_MASK = 0xff000000, // Mask for architecture bits
1399   CPU_ARCH_ABI64 = 0x01000000 // 64 bit ABI
1400 };
1401 
1402 // Constants for the cputype field.
1403 enum CPUType {
1404   CPU_TYPE_ANY = -1,
1405   CPU_TYPE_X86 = 7,
1406   CPU_TYPE_I386 = CPU_TYPE_X86,
1407   CPU_TYPE_X86_64 = CPU_TYPE_X86 | CPU_ARCH_ABI64,
1408   /* CPU_TYPE_MIPS      = 8, */
1409   CPU_TYPE_MC98000 = 10, // Old Motorola PowerPC
1410   CPU_TYPE_ARM = 12,
1411   CPU_TYPE_ARM64 = CPU_TYPE_ARM | CPU_ARCH_ABI64,
1412   CPU_TYPE_SPARC = 14,
1413   CPU_TYPE_POWERPC = 18,
1414   CPU_TYPE_POWERPC64 = CPU_TYPE_POWERPC | CPU_ARCH_ABI64
1415 };
1416 
1417 enum : uint32_t {
1418   // Capability bits used in the definition of cpusubtype.
1419   CPU_SUBTYPE_MASK = 0xff000000,  // Mask for architecture bits
1420   CPU_SUBTYPE_LIB64 = 0x80000000, // 64 bit libraries
1421 
1422   // Special CPU subtype constants.
1423   CPU_SUBTYPE_MULTIPLE = ~0u
1424 };
1425 
1426 // Constants for the cpusubtype field.
1427 enum CPUSubTypeX86 {
1428   CPU_SUBTYPE_I386_ALL = 3,
1429   CPU_SUBTYPE_386 = 3,
1430   CPU_SUBTYPE_486 = 4,
1431   CPU_SUBTYPE_486SX = 0x84,
1432   CPU_SUBTYPE_586 = 5,
1433   CPU_SUBTYPE_PENT = CPU_SUBTYPE_586,
1434   CPU_SUBTYPE_PENTPRO = 0x16,
1435   CPU_SUBTYPE_PENTII_M3 = 0x36,
1436   CPU_SUBTYPE_PENTII_M5 = 0x56,
1437   CPU_SUBTYPE_CELERON = 0x67,
1438   CPU_SUBTYPE_CELERON_MOBILE = 0x77,
1439   CPU_SUBTYPE_PENTIUM_3 = 0x08,
1440   CPU_SUBTYPE_PENTIUM_3_M = 0x18,
1441   CPU_SUBTYPE_PENTIUM_3_XEON = 0x28,
1442   CPU_SUBTYPE_PENTIUM_M = 0x09,
1443   CPU_SUBTYPE_PENTIUM_4 = 0x0a,
1444   CPU_SUBTYPE_PENTIUM_4_M = 0x1a,
1445   CPU_SUBTYPE_ITANIUM = 0x0b,
1446   CPU_SUBTYPE_ITANIUM_2 = 0x1b,
1447   CPU_SUBTYPE_XEON = 0x0c,
1448   CPU_SUBTYPE_XEON_MP = 0x1c,
1449 
1450   CPU_SUBTYPE_X86_ALL = 3,
1451   CPU_SUBTYPE_X86_64_ALL = 3,
1452   CPU_SUBTYPE_X86_ARCH1 = 4,
1453   CPU_SUBTYPE_X86_64_H = 8
1454 };
CPU_SUBTYPE_INTEL(int Family,int Model)1455 inline int CPU_SUBTYPE_INTEL(int Family, int Model) {
1456   return Family | (Model << 4);
1457 }
CPU_SUBTYPE_INTEL_FAMILY(CPUSubTypeX86 ST)1458 inline int CPU_SUBTYPE_INTEL_FAMILY(CPUSubTypeX86 ST) {
1459   return ((int)ST) & 0x0f;
1460 }
CPU_SUBTYPE_INTEL_MODEL(CPUSubTypeX86 ST)1461 inline int CPU_SUBTYPE_INTEL_MODEL(CPUSubTypeX86 ST) { return ((int)ST) >> 4; }
1462 enum { CPU_SUBTYPE_INTEL_FAMILY_MAX = 15, CPU_SUBTYPE_INTEL_MODEL_ALL = 0 };
1463 
1464 enum CPUSubTypeARM {
1465   CPU_SUBTYPE_ARM_ALL = 0,
1466   CPU_SUBTYPE_ARM_V4T = 5,
1467   CPU_SUBTYPE_ARM_V6 = 6,
1468   CPU_SUBTYPE_ARM_V5 = 7,
1469   CPU_SUBTYPE_ARM_V5TEJ = 7,
1470   CPU_SUBTYPE_ARM_XSCALE = 8,
1471   CPU_SUBTYPE_ARM_V7 = 9,
1472   //  unused  ARM_V7F     = 10,
1473   CPU_SUBTYPE_ARM_V7S = 11,
1474   CPU_SUBTYPE_ARM_V7K = 12,
1475   CPU_SUBTYPE_ARM_V6M = 14,
1476   CPU_SUBTYPE_ARM_V7M = 15,
1477   CPU_SUBTYPE_ARM_V7EM = 16
1478 };
1479 
1480 enum CPUSubTypeARM64 { CPU_SUBTYPE_ARM64_ALL = 0 };
1481 
1482 enum CPUSubTypeSPARC { CPU_SUBTYPE_SPARC_ALL = 0 };
1483 
1484 enum CPUSubTypePowerPC {
1485   CPU_SUBTYPE_POWERPC_ALL = 0,
1486   CPU_SUBTYPE_POWERPC_601 = 1,
1487   CPU_SUBTYPE_POWERPC_602 = 2,
1488   CPU_SUBTYPE_POWERPC_603 = 3,
1489   CPU_SUBTYPE_POWERPC_603e = 4,
1490   CPU_SUBTYPE_POWERPC_603ev = 5,
1491   CPU_SUBTYPE_POWERPC_604 = 6,
1492   CPU_SUBTYPE_POWERPC_604e = 7,
1493   CPU_SUBTYPE_POWERPC_620 = 8,
1494   CPU_SUBTYPE_POWERPC_750 = 9,
1495   CPU_SUBTYPE_POWERPC_7400 = 10,
1496   CPU_SUBTYPE_POWERPC_7450 = 11,
1497   CPU_SUBTYPE_POWERPC_970 = 100,
1498 
1499   CPU_SUBTYPE_MC980000_ALL = CPU_SUBTYPE_POWERPC_ALL,
1500   CPU_SUBTYPE_MC98601 = CPU_SUBTYPE_POWERPC_601
1501 };
1502 
1503 struct x86_thread_state32_t {
1504   uint32_t eax;
1505   uint32_t ebx;
1506   uint32_t ecx;
1507   uint32_t edx;
1508   uint32_t edi;
1509   uint32_t esi;
1510   uint32_t ebp;
1511   uint32_t esp;
1512   uint32_t ss;
1513   uint32_t eflags;
1514   uint32_t eip;
1515   uint32_t cs;
1516   uint32_t ds;
1517   uint32_t es;
1518   uint32_t fs;
1519   uint32_t gs;
1520 };
1521 
1522 struct x86_thread_state64_t {
1523   uint64_t rax;
1524   uint64_t rbx;
1525   uint64_t rcx;
1526   uint64_t rdx;
1527   uint64_t rdi;
1528   uint64_t rsi;
1529   uint64_t rbp;
1530   uint64_t rsp;
1531   uint64_t r8;
1532   uint64_t r9;
1533   uint64_t r10;
1534   uint64_t r11;
1535   uint64_t r12;
1536   uint64_t r13;
1537   uint64_t r14;
1538   uint64_t r15;
1539   uint64_t rip;
1540   uint64_t rflags;
1541   uint64_t cs;
1542   uint64_t fs;
1543   uint64_t gs;
1544 };
1545 
1546 enum x86_fp_control_precis {
1547   x86_FP_PREC_24B = 0,
1548   x86_FP_PREC_53B = 2,
1549   x86_FP_PREC_64B = 3
1550 };
1551 
1552 enum x86_fp_control_rc {
1553   x86_FP_RND_NEAR = 0,
1554   x86_FP_RND_DOWN = 1,
1555   x86_FP_RND_UP = 2,
1556   x86_FP_CHOP = 3
1557 };
1558 
1559 struct fp_control_t {
1560   unsigned short invalid : 1, denorm : 1, zdiv : 1, ovrfl : 1, undfl : 1,
1561       precis : 1, : 2, pc : 2, rc : 2, : 1, : 3;
1562 };
1563 
1564 struct fp_status_t {
1565   unsigned short invalid : 1, denorm : 1, zdiv : 1, ovrfl : 1, undfl : 1,
1566       precis : 1, stkflt : 1, errsumm : 1, c0 : 1, c1 : 1, c2 : 1, tos : 3,
1567       c3 : 1, busy : 1;
1568 };
1569 
1570 struct mmst_reg_t {
1571   char mmst_reg[10];
1572   char mmst_rsrv[6];
1573 };
1574 
1575 struct xmm_reg_t {
1576   char xmm_reg[16];
1577 };
1578 
1579 struct x86_float_state64_t {
1580   int32_t fpu_reserved[2];
1581   fp_control_t fpu_fcw;
1582   fp_status_t fpu_fsw;
1583   uint8_t fpu_ftw;
1584   uint8_t fpu_rsrv1;
1585   uint16_t fpu_fop;
1586   uint32_t fpu_ip;
1587   uint16_t fpu_cs;
1588   uint16_t fpu_rsrv2;
1589   uint32_t fpu_dp;
1590   uint16_t fpu_ds;
1591   uint16_t fpu_rsrv3;
1592   uint32_t fpu_mxcsr;
1593   uint32_t fpu_mxcsrmask;
1594   mmst_reg_t fpu_stmm0;
1595   mmst_reg_t fpu_stmm1;
1596   mmst_reg_t fpu_stmm2;
1597   mmst_reg_t fpu_stmm3;
1598   mmst_reg_t fpu_stmm4;
1599   mmst_reg_t fpu_stmm5;
1600   mmst_reg_t fpu_stmm6;
1601   mmst_reg_t fpu_stmm7;
1602   xmm_reg_t fpu_xmm0;
1603   xmm_reg_t fpu_xmm1;
1604   xmm_reg_t fpu_xmm2;
1605   xmm_reg_t fpu_xmm3;
1606   xmm_reg_t fpu_xmm4;
1607   xmm_reg_t fpu_xmm5;
1608   xmm_reg_t fpu_xmm6;
1609   xmm_reg_t fpu_xmm7;
1610   xmm_reg_t fpu_xmm8;
1611   xmm_reg_t fpu_xmm9;
1612   xmm_reg_t fpu_xmm10;
1613   xmm_reg_t fpu_xmm11;
1614   xmm_reg_t fpu_xmm12;
1615   xmm_reg_t fpu_xmm13;
1616   xmm_reg_t fpu_xmm14;
1617   xmm_reg_t fpu_xmm15;
1618   char fpu_rsrv4[6 * 16];
1619   uint32_t fpu_reserved1;
1620 };
1621 
1622 struct x86_exception_state64_t {
1623   uint16_t trapno;
1624   uint16_t cpu;
1625   uint32_t err;
1626   uint64_t faultvaddr;
1627 };
1628 
swapStruct(x86_thread_state32_t & x)1629 inline void swapStruct(x86_thread_state32_t &x) {
1630   sys::swapByteOrder(x.eax);
1631   sys::swapByteOrder(x.ebx);
1632   sys::swapByteOrder(x.ecx);
1633   sys::swapByteOrder(x.edx);
1634   sys::swapByteOrder(x.edi);
1635   sys::swapByteOrder(x.esi);
1636   sys::swapByteOrder(x.ebp);
1637   sys::swapByteOrder(x.esp);
1638   sys::swapByteOrder(x.ss);
1639   sys::swapByteOrder(x.eflags);
1640   sys::swapByteOrder(x.eip);
1641   sys::swapByteOrder(x.cs);
1642   sys::swapByteOrder(x.ds);
1643   sys::swapByteOrder(x.es);
1644   sys::swapByteOrder(x.fs);
1645   sys::swapByteOrder(x.gs);
1646 }
1647 
swapStruct(x86_thread_state64_t & x)1648 inline void swapStruct(x86_thread_state64_t &x) {
1649   sys::swapByteOrder(x.rax);
1650   sys::swapByteOrder(x.rbx);
1651   sys::swapByteOrder(x.rcx);
1652   sys::swapByteOrder(x.rdx);
1653   sys::swapByteOrder(x.rdi);
1654   sys::swapByteOrder(x.rsi);
1655   sys::swapByteOrder(x.rbp);
1656   sys::swapByteOrder(x.rsp);
1657   sys::swapByteOrder(x.r8);
1658   sys::swapByteOrder(x.r9);
1659   sys::swapByteOrder(x.r10);
1660   sys::swapByteOrder(x.r11);
1661   sys::swapByteOrder(x.r12);
1662   sys::swapByteOrder(x.r13);
1663   sys::swapByteOrder(x.r14);
1664   sys::swapByteOrder(x.r15);
1665   sys::swapByteOrder(x.rip);
1666   sys::swapByteOrder(x.rflags);
1667   sys::swapByteOrder(x.cs);
1668   sys::swapByteOrder(x.fs);
1669   sys::swapByteOrder(x.gs);
1670 }
1671 
swapStruct(x86_float_state64_t & x)1672 inline void swapStruct(x86_float_state64_t &x) {
1673   sys::swapByteOrder(x.fpu_reserved[0]);
1674   sys::swapByteOrder(x.fpu_reserved[1]);
1675   // TODO swap: fp_control_t fpu_fcw;
1676   // TODO swap: fp_status_t fpu_fsw;
1677   sys::swapByteOrder(x.fpu_fop);
1678   sys::swapByteOrder(x.fpu_ip);
1679   sys::swapByteOrder(x.fpu_cs);
1680   sys::swapByteOrder(x.fpu_rsrv2);
1681   sys::swapByteOrder(x.fpu_dp);
1682   sys::swapByteOrder(x.fpu_ds);
1683   sys::swapByteOrder(x.fpu_rsrv3);
1684   sys::swapByteOrder(x.fpu_mxcsr);
1685   sys::swapByteOrder(x.fpu_mxcsrmask);
1686   sys::swapByteOrder(x.fpu_reserved1);
1687 }
1688 
swapStruct(x86_exception_state64_t & x)1689 inline void swapStruct(x86_exception_state64_t &x) {
1690   sys::swapByteOrder(x.trapno);
1691   sys::swapByteOrder(x.cpu);
1692   sys::swapByteOrder(x.err);
1693   sys::swapByteOrder(x.faultvaddr);
1694 }
1695 
1696 struct x86_state_hdr_t {
1697   uint32_t flavor;
1698   uint32_t count;
1699 };
1700 
1701 struct x86_thread_state_t {
1702   x86_state_hdr_t tsh;
1703   union {
1704     x86_thread_state64_t ts64;
1705     x86_thread_state32_t ts32;
1706   } uts;
1707 };
1708 
1709 struct x86_float_state_t {
1710   x86_state_hdr_t fsh;
1711   union {
1712     x86_float_state64_t fs64;
1713   } ufs;
1714 };
1715 
1716 struct x86_exception_state_t {
1717   x86_state_hdr_t esh;
1718   union {
1719     x86_exception_state64_t es64;
1720   } ues;
1721 };
1722 
swapStruct(x86_state_hdr_t & x)1723 inline void swapStruct(x86_state_hdr_t &x) {
1724   sys::swapByteOrder(x.flavor);
1725   sys::swapByteOrder(x.count);
1726 }
1727 
1728 enum X86ThreadFlavors {
1729   x86_THREAD_STATE32 = 1,
1730   x86_FLOAT_STATE32 = 2,
1731   x86_EXCEPTION_STATE32 = 3,
1732   x86_THREAD_STATE64 = 4,
1733   x86_FLOAT_STATE64 = 5,
1734   x86_EXCEPTION_STATE64 = 6,
1735   x86_THREAD_STATE = 7,
1736   x86_FLOAT_STATE = 8,
1737   x86_EXCEPTION_STATE = 9,
1738   x86_DEBUG_STATE32 = 10,
1739   x86_DEBUG_STATE64 = 11,
1740   x86_DEBUG_STATE = 12
1741 };
1742 
swapStruct(x86_thread_state_t & x)1743 inline void swapStruct(x86_thread_state_t &x) {
1744   swapStruct(x.tsh);
1745   if (x.tsh.flavor == x86_THREAD_STATE64)
1746     swapStruct(x.uts.ts64);
1747 }
1748 
swapStruct(x86_float_state_t & x)1749 inline void swapStruct(x86_float_state_t &x) {
1750   swapStruct(x.fsh);
1751   if (x.fsh.flavor == x86_FLOAT_STATE64)
1752     swapStruct(x.ufs.fs64);
1753 }
1754 
swapStruct(x86_exception_state_t & x)1755 inline void swapStruct(x86_exception_state_t &x) {
1756   swapStruct(x.esh);
1757   if (x.esh.flavor == x86_EXCEPTION_STATE64)
1758     swapStruct(x.ues.es64);
1759 }
1760 
1761 const uint32_t x86_THREAD_STATE32_COUNT =
1762     sizeof(x86_thread_state32_t) / sizeof(uint32_t);
1763 
1764 const uint32_t x86_THREAD_STATE64_COUNT =
1765     sizeof(x86_thread_state64_t) / sizeof(uint32_t);
1766 const uint32_t x86_FLOAT_STATE64_COUNT =
1767     sizeof(x86_float_state64_t) / sizeof(uint32_t);
1768 const uint32_t x86_EXCEPTION_STATE64_COUNT =
1769     sizeof(x86_exception_state64_t) / sizeof(uint32_t);
1770 
1771 const uint32_t x86_THREAD_STATE_COUNT =
1772     sizeof(x86_thread_state_t) / sizeof(uint32_t);
1773 const uint32_t x86_FLOAT_STATE_COUNT =
1774     sizeof(x86_float_state_t) / sizeof(uint32_t);
1775 const uint32_t x86_EXCEPTION_STATE_COUNT =
1776     sizeof(x86_exception_state_t) / sizeof(uint32_t);
1777 
1778 struct arm_thread_state32_t {
1779   uint32_t r[13];
1780   uint32_t sp;
1781   uint32_t lr;
1782   uint32_t pc;
1783   uint32_t cpsr;
1784 };
1785 
swapStruct(arm_thread_state32_t & x)1786 inline void swapStruct(arm_thread_state32_t &x) {
1787   for (int i = 0; i < 13; i++)
1788     sys::swapByteOrder(x.r[i]);
1789   sys::swapByteOrder(x.sp);
1790   sys::swapByteOrder(x.lr);
1791   sys::swapByteOrder(x.pc);
1792   sys::swapByteOrder(x.cpsr);
1793 }
1794 
1795 struct arm_thread_state64_t {
1796   uint64_t x[29];
1797   uint64_t fp;
1798   uint64_t lr;
1799   uint64_t sp;
1800   uint64_t pc;
1801   uint32_t cpsr;
1802   uint32_t pad;
1803 };
1804 
swapStruct(arm_thread_state64_t & x)1805 inline void swapStruct(arm_thread_state64_t &x) {
1806   for (int i = 0; i < 29; i++)
1807     sys::swapByteOrder(x.x[i]);
1808   sys::swapByteOrder(x.fp);
1809   sys::swapByteOrder(x.lr);
1810   sys::swapByteOrder(x.sp);
1811   sys::swapByteOrder(x.pc);
1812   sys::swapByteOrder(x.cpsr);
1813 }
1814 
1815 struct arm_state_hdr_t {
1816   uint32_t flavor;
1817   uint32_t count;
1818 };
1819 
1820 struct arm_thread_state_t {
1821   arm_state_hdr_t tsh;
1822   union {
1823     arm_thread_state32_t ts32;
1824   } uts;
1825 };
1826 
swapStruct(arm_state_hdr_t & x)1827 inline void swapStruct(arm_state_hdr_t &x) {
1828   sys::swapByteOrder(x.flavor);
1829   sys::swapByteOrder(x.count);
1830 }
1831 
1832 enum ARMThreadFlavors {
1833   ARM_THREAD_STATE = 1,
1834   ARM_VFP_STATE = 2,
1835   ARM_EXCEPTION_STATE = 3,
1836   ARM_DEBUG_STATE = 4,
1837   ARN_THREAD_STATE_NONE = 5,
1838   ARM_THREAD_STATE64 = 6,
1839   ARM_EXCEPTION_STATE64 = 7
1840 };
1841 
swapStruct(arm_thread_state_t & x)1842 inline void swapStruct(arm_thread_state_t &x) {
1843   swapStruct(x.tsh);
1844   if (x.tsh.flavor == ARM_THREAD_STATE)
1845     swapStruct(x.uts.ts32);
1846 }
1847 
1848 const uint32_t ARM_THREAD_STATE_COUNT =
1849     sizeof(arm_thread_state32_t) / sizeof(uint32_t);
1850 
1851 const uint32_t ARM_THREAD_STATE64_COUNT =
1852     sizeof(arm_thread_state64_t) / sizeof(uint32_t);
1853 
1854 struct ppc_thread_state32_t {
1855   uint32_t srr0;
1856   uint32_t srr1;
1857   uint32_t r0;
1858   uint32_t r1;
1859   uint32_t r2;
1860   uint32_t r3;
1861   uint32_t r4;
1862   uint32_t r5;
1863   uint32_t r6;
1864   uint32_t r7;
1865   uint32_t r8;
1866   uint32_t r9;
1867   uint32_t r10;
1868   uint32_t r11;
1869   uint32_t r12;
1870   uint32_t r13;
1871   uint32_t r14;
1872   uint32_t r15;
1873   uint32_t r16;
1874   uint32_t r17;
1875   uint32_t r18;
1876   uint32_t r19;
1877   uint32_t r20;
1878   uint32_t r21;
1879   uint32_t r22;
1880   uint32_t r23;
1881   uint32_t r24;
1882   uint32_t r25;
1883   uint32_t r26;
1884   uint32_t r27;
1885   uint32_t r28;
1886   uint32_t r29;
1887   uint32_t r30;
1888   uint32_t r31;
1889   uint32_t ct;
1890   uint32_t xer;
1891   uint32_t lr;
1892   uint32_t ctr;
1893   uint32_t mq;
1894   uint32_t vrsave;
1895 };
1896 
swapStruct(ppc_thread_state32_t & x)1897 inline void swapStruct(ppc_thread_state32_t &x) {
1898   sys::swapByteOrder(x.srr0);
1899   sys::swapByteOrder(x.srr1);
1900   sys::swapByteOrder(x.r0);
1901   sys::swapByteOrder(x.r1);
1902   sys::swapByteOrder(x.r2);
1903   sys::swapByteOrder(x.r3);
1904   sys::swapByteOrder(x.r4);
1905   sys::swapByteOrder(x.r5);
1906   sys::swapByteOrder(x.r6);
1907   sys::swapByteOrder(x.r7);
1908   sys::swapByteOrder(x.r8);
1909   sys::swapByteOrder(x.r9);
1910   sys::swapByteOrder(x.r10);
1911   sys::swapByteOrder(x.r11);
1912   sys::swapByteOrder(x.r12);
1913   sys::swapByteOrder(x.r13);
1914   sys::swapByteOrder(x.r14);
1915   sys::swapByteOrder(x.r15);
1916   sys::swapByteOrder(x.r16);
1917   sys::swapByteOrder(x.r17);
1918   sys::swapByteOrder(x.r18);
1919   sys::swapByteOrder(x.r19);
1920   sys::swapByteOrder(x.r20);
1921   sys::swapByteOrder(x.r21);
1922   sys::swapByteOrder(x.r22);
1923   sys::swapByteOrder(x.r23);
1924   sys::swapByteOrder(x.r24);
1925   sys::swapByteOrder(x.r25);
1926   sys::swapByteOrder(x.r26);
1927   sys::swapByteOrder(x.r27);
1928   sys::swapByteOrder(x.r28);
1929   sys::swapByteOrder(x.r29);
1930   sys::swapByteOrder(x.r30);
1931   sys::swapByteOrder(x.r31);
1932   sys::swapByteOrder(x.ct);
1933   sys::swapByteOrder(x.xer);
1934   sys::swapByteOrder(x.lr);
1935   sys::swapByteOrder(x.ctr);
1936   sys::swapByteOrder(x.mq);
1937   sys::swapByteOrder(x.vrsave);
1938 }
1939 
1940 struct ppc_state_hdr_t {
1941   uint32_t flavor;
1942   uint32_t count;
1943 };
1944 
1945 struct ppc_thread_state_t {
1946   ppc_state_hdr_t tsh;
1947   union {
1948     ppc_thread_state32_t ts32;
1949   } uts;
1950 };
1951 
swapStruct(ppc_state_hdr_t & x)1952 inline void swapStruct(ppc_state_hdr_t &x) {
1953   sys::swapByteOrder(x.flavor);
1954   sys::swapByteOrder(x.count);
1955 }
1956 
1957 enum PPCThreadFlavors {
1958   PPC_THREAD_STATE = 1,
1959   PPC_FLOAT_STATE = 2,
1960   PPC_EXCEPTION_STATE = 3,
1961   PPC_VECTOR_STATE = 4,
1962   PPC_THREAD_STATE64 = 5,
1963   PPC_EXCEPTION_STATE64 = 6,
1964   PPC_THREAD_STATE_NONE = 7
1965 };
1966 
swapStruct(ppc_thread_state_t & x)1967 inline void swapStruct(ppc_thread_state_t &x) {
1968   swapStruct(x.tsh);
1969   if (x.tsh.flavor == PPC_THREAD_STATE)
1970     swapStruct(x.uts.ts32);
1971 }
1972 
1973 const uint32_t PPC_THREAD_STATE_COUNT =
1974     sizeof(ppc_thread_state32_t) / sizeof(uint32_t);
1975 
1976 // Define a union of all load command structs
1977 #define LOAD_COMMAND_STRUCT(LCStruct) LCStruct LCStruct##_data;
1978 
1979 LLVM_PACKED_START
1980 union alignas(4) macho_load_command {
1981 #include "llvm/BinaryFormat/MachO.def"
1982 };
1983 LLVM_PACKED_END
1984 
1985 } // end namespace MachO
1986 } // end namespace llvm
1987 
1988 #endif
1989