1//===- MachOYAML.cpp - MachO YAMLIO implementation ------------------------===//
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 classes for handling the YAML representation of MachO.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/ObjectYAML/MachOYAML.h"
15#include "llvm/Support/Casting.h"
16#include "llvm/Support/Format.h"
17#include "llvm/Support/MachO.h"
18
19#include <string.h> // For memcpy, memset and strnlen.
20
21namespace llvm {
22
23MachOYAML::LoadCommand::~LoadCommand() {}
24
25namespace yaml {
26
27void ScalarTraits<char_16>::output(const char_16 &Val, void *,
28                                   llvm::raw_ostream &Out) {
29  auto Len = strnlen(&Val[0], 16);
30  Out << StringRef(&Val[0], Len);
31}
32
33StringRef ScalarTraits<char_16>::input(StringRef Scalar, void *, char_16 &Val) {
34  size_t CopySize = 16 >= Scalar.size() ? 16 : Scalar.size();
35  memcpy((void *)Val, Scalar.data(), CopySize);
36
37  if (Scalar.size() < 16) {
38    memset((void *)&Val[Scalar.size()], 0, 16 - Scalar.size());
39  }
40
41  return StringRef();
42}
43
44bool ScalarTraits<char_16>::mustQuote(StringRef S) { return needsQuotes(S); }
45
46void ScalarTraits<uuid_t>::output(const uuid_t &Val, void *,
47                                  llvm::raw_ostream &Out) {
48  for (int Idx = 0; Idx < 16; ++Idx) {
49    Out << format("%02" PRIX32, Val[Idx]);
50    if (Idx == 3 || Idx == 5 || Idx == 7 || Idx == 9)
51      Out << "-";
52  }
53}
54
55StringRef ScalarTraits<uuid_t>::input(StringRef Scalar, void *, uuid_t &Val) {
56  size_t OutIdx = 0;
57  for (size_t Idx = 0; Idx < Scalar.size(); ++Idx) {
58    if (Scalar[Idx] == '-' || OutIdx >= 16)
59      continue;
60    unsigned long long TempInt;
61    if (getAsUnsignedInteger(Scalar.slice(Idx, Idx + 2), 16, TempInt))
62      return "invalid number";
63    if (TempInt > 0xFF)
64      return "out of range number";
65    Val[OutIdx] = static_cast<uint8_t>(TempInt);
66    ++Idx; // increment idx an extra time because we're consuming 2 chars
67    ++OutIdx;
68  }
69  return StringRef();
70}
71
72bool ScalarTraits<uuid_t>::mustQuote(StringRef S) { return needsQuotes(S); }
73
74void MappingTraits<MachOYAML::FileHeader>::mapping(
75    IO &IO, MachOYAML::FileHeader &FileHdr) {
76  IO.mapRequired("magic", FileHdr.magic);
77  IO.mapRequired("cputype", FileHdr.cputype);
78  IO.mapRequired("cpusubtype", FileHdr.cpusubtype);
79  IO.mapRequired("filetype", FileHdr.filetype);
80  IO.mapRequired("ncmds", FileHdr.ncmds);
81  IO.mapRequired("sizeofcmds", FileHdr.sizeofcmds);
82  IO.mapRequired("flags", FileHdr.flags);
83  if (FileHdr.magic == MachO::MH_MAGIC_64 ||
84      FileHdr.magic == MachO::MH_CIGAM_64)
85    IO.mapRequired("reserved", FileHdr.reserved);
86}
87
88void MappingTraits<MachOYAML::Object>::mapping(IO &IO,
89                                               MachOYAML::Object &Object) {
90  // If the context isn't already set, tag the document as !mach-o.
91  // For Fat files there will be a different tag so they can be differentiated.
92  if (!IO.getContext()) {
93    IO.setContext(&Object);
94  }
95  IO.mapTag("!mach-o", true);
96  IO.mapRequired("FileHeader", Object.Header);
97  IO.mapOptional("LoadCommands", Object.LoadCommands);
98  IO.mapOptional("LinkEditData", Object.LinkEdit);
99
100  if (IO.getContext() == &Object)
101    IO.setContext(nullptr);
102}
103
104void MappingTraits<MachOYAML::FatHeader>::mapping(
105    IO &IO, MachOYAML::FatHeader &FatHeader) {
106  IO.mapRequired("magic", FatHeader.magic);
107  IO.mapRequired("nfat_arch", FatHeader.nfat_arch);
108}
109
110void MappingTraits<MachOYAML::FatArch>::mapping(IO &IO,
111                                                MachOYAML::FatArch &FatArch) {
112  IO.mapRequired("cputype", FatArch.cputype);
113  IO.mapRequired("cpusubtype", FatArch.cpusubtype);
114  IO.mapRequired("offset", FatArch.offset);
115  IO.mapRequired("size", FatArch.size);
116  IO.mapRequired("align", FatArch.align);
117  IO.mapOptional("reserved", FatArch.reserved,
118                 static_cast<llvm::yaml::Hex32>(0));
119}
120
121void MappingTraits<MachOYAML::UniversalBinary>::mapping(
122    IO &IO, MachOYAML::UniversalBinary &UniversalBinary) {
123  if (!IO.getContext()) {
124    IO.setContext(&UniversalBinary);
125    IO.mapTag("!fat-mach-o", true);
126  }
127  IO.mapRequired("FatHeader", UniversalBinary.Header);
128  IO.mapRequired("FatArchs", UniversalBinary.FatArchs);
129  IO.mapRequired("Slices", UniversalBinary.Slices);
130
131  if (IO.getContext() == &UniversalBinary)
132    IO.setContext(nullptr);
133}
134
135void MappingTraits<MachOYAML::LinkEditData>::mapping(
136    IO &IO, MachOYAML::LinkEditData &LinkEditData) {
137  IO.mapOptional("RebaseOpcodes", LinkEditData.RebaseOpcodes);
138  IO.mapOptional("BindOpcodes", LinkEditData.BindOpcodes);
139  IO.mapOptional("WeakBindOpcodes", LinkEditData.WeakBindOpcodes);
140  IO.mapOptional("LazyBindOpcodes", LinkEditData.LazyBindOpcodes);
141  IO.mapOptional("ExportTrie", LinkEditData.ExportTrie);
142  IO.mapOptional("NameList", LinkEditData.NameList);
143  IO.mapOptional("StringTable", LinkEditData.StringTable);
144}
145
146void MappingTraits<MachOYAML::RebaseOpcode>::mapping(
147    IO &IO, MachOYAML::RebaseOpcode &RebaseOpcode) {
148  IO.mapRequired("Opcode", RebaseOpcode.Opcode);
149  IO.mapRequired("Imm", RebaseOpcode.Imm);
150  IO.mapOptional("ExtraData", RebaseOpcode.ExtraData);
151}
152
153void MappingTraits<MachOYAML::BindOpcode>::mapping(
154    IO &IO, MachOYAML::BindOpcode &BindOpcode) {
155  IO.mapRequired("Opcode", BindOpcode.Opcode);
156  IO.mapRequired("Imm", BindOpcode.Imm);
157  IO.mapOptional("ULEBExtraData", BindOpcode.ULEBExtraData);
158  IO.mapOptional("SLEBExtraData", BindOpcode.SLEBExtraData);
159  IO.mapOptional("Symbol", BindOpcode.Symbol);
160}
161
162void MappingTraits<MachOYAML::ExportEntry>::mapping(
163    IO &IO, MachOYAML::ExportEntry &ExportEntry) {
164  IO.mapRequired("TerminalSize", ExportEntry.TerminalSize);
165  IO.mapOptional("NodeOffset", ExportEntry.NodeOffset);
166  IO.mapOptional("Name", ExportEntry.Name);
167  IO.mapOptional("Flags", ExportEntry.Flags);
168  IO.mapOptional("Address", ExportEntry.Address);
169  IO.mapOptional("Other", ExportEntry.Other);
170  IO.mapOptional("ImportName", ExportEntry.ImportName);
171  IO.mapOptional("Children", ExportEntry.Children);
172}
173
174void MappingTraits<MachOYAML::NListEntry>::mapping(
175    IO &IO, MachOYAML::NListEntry &NListEntry) {
176  IO.mapRequired("n_strx", NListEntry.n_strx);
177  IO.mapRequired("n_type", NListEntry.n_type);
178  IO.mapRequired("n_sect", NListEntry.n_sect);
179  IO.mapRequired("n_desc", NListEntry.n_desc);
180  IO.mapRequired("n_value", NListEntry.n_value);
181}
182
183template <typename StructType>
184void mapLoadCommandData(IO &IO, MachOYAML::LoadCommand &LoadCommand) {}
185
186template <>
187void mapLoadCommandData<MachO::segment_command>(
188    IO &IO, MachOYAML::LoadCommand &LoadCommand) {
189  IO.mapOptional("Sections", LoadCommand.Sections);
190}
191
192template <>
193void mapLoadCommandData<MachO::segment_command_64>(
194    IO &IO, MachOYAML::LoadCommand &LoadCommand) {
195  IO.mapOptional("Sections", LoadCommand.Sections);
196}
197
198template <>
199void mapLoadCommandData<MachO::dylib_command>(
200    IO &IO, MachOYAML::LoadCommand &LoadCommand) {
201  IO.mapOptional("PayloadString", LoadCommand.PayloadString);
202}
203
204template <>
205void mapLoadCommandData<MachO::rpath_command>(
206    IO &IO, MachOYAML::LoadCommand &LoadCommand) {
207  IO.mapOptional("PayloadString", LoadCommand.PayloadString);
208}
209
210template <>
211void mapLoadCommandData<MachO::dylinker_command>(
212    IO &IO, MachOYAML::LoadCommand &LoadCommand) {
213  IO.mapOptional("PayloadString", LoadCommand.PayloadString);
214}
215
216void MappingTraits<MachOYAML::LoadCommand>::mapping(
217    IO &IO, MachOYAML::LoadCommand &LoadCommand) {
218  MachO::LoadCommandType TempCmd = static_cast<MachO::LoadCommandType>(
219      LoadCommand.Data.load_command_data.cmd);
220  IO.mapRequired("cmd", TempCmd);
221  LoadCommand.Data.load_command_data.cmd = TempCmd;
222  IO.mapRequired("cmdsize", LoadCommand.Data.load_command_data.cmdsize);
223
224#define HANDLE_LOAD_COMMAND(LCName, LCValue, LCStruct)                         \
225  case MachO::LCName:                                                          \
226    MappingTraits<MachO::LCStruct>::mapping(IO,                                \
227                                            LoadCommand.Data.LCStruct##_data); \
228    mapLoadCommandData<MachO::LCStruct>(IO, LoadCommand);                      \
229    break;
230
231  switch (LoadCommand.Data.load_command_data.cmd) {
232#include "llvm/Support/MachO.def"
233  }
234  IO.mapOptional("PayloadBytes", LoadCommand.PayloadBytes);
235  IO.mapOptional("ZeroPadBytes", LoadCommand.ZeroPadBytes, (uint64_t)0ull);
236}
237
238void MappingTraits<MachO::dyld_info_command>::mapping(
239    IO &IO, MachO::dyld_info_command &LoadCommand) {
240  IO.mapRequired("rebase_off", LoadCommand.rebase_off);
241  IO.mapRequired("rebase_size", LoadCommand.rebase_size);
242  IO.mapRequired("bind_off", LoadCommand.bind_off);
243  IO.mapRequired("bind_size", LoadCommand.bind_size);
244  IO.mapRequired("weak_bind_off", LoadCommand.weak_bind_off);
245  IO.mapRequired("weak_bind_size", LoadCommand.weak_bind_size);
246  IO.mapRequired("lazy_bind_off", LoadCommand.lazy_bind_off);
247  IO.mapRequired("lazy_bind_size", LoadCommand.lazy_bind_size);
248  IO.mapRequired("export_off", LoadCommand.export_off);
249  IO.mapRequired("export_size", LoadCommand.export_size);
250}
251
252void MappingTraits<MachOYAML::Section>::mapping(IO &IO,
253                                                MachOYAML::Section &Section) {
254  IO.mapRequired("sectname", Section.sectname);
255  IO.mapRequired("segname", Section.segname);
256  IO.mapRequired("addr", Section.addr);
257  IO.mapRequired("size", Section.size);
258  IO.mapRequired("offset", Section.offset);
259  IO.mapRequired("align", Section.align);
260  IO.mapRequired("reloff", Section.reloff);
261  IO.mapRequired("nreloc", Section.nreloc);
262  IO.mapRequired("flags", Section.flags);
263  IO.mapRequired("reserved1", Section.reserved1);
264  IO.mapRequired("reserved2", Section.reserved2);
265  IO.mapOptional("reserved3", Section.reserved3);
266}
267
268void MappingTraits<MachO::dylib>::mapping(IO &IO, MachO::dylib &DylibStruct) {
269  IO.mapRequired("name", DylibStruct.name);
270  IO.mapRequired("timestamp", DylibStruct.timestamp);
271  IO.mapRequired("current_version", DylibStruct.current_version);
272  IO.mapRequired("compatibility_version", DylibStruct.compatibility_version);
273}
274
275void MappingTraits<MachO::dylib_command>::mapping(
276    IO &IO, MachO::dylib_command &LoadCommand) {
277  IO.mapRequired("dylib", LoadCommand.dylib);
278}
279
280void MappingTraits<MachO::dylinker_command>::mapping(
281    IO &IO, MachO::dylinker_command &LoadCommand) {
282
283  IO.mapRequired("name", LoadCommand.name);
284}
285
286void MappingTraits<MachO::dysymtab_command>::mapping(
287    IO &IO, MachO::dysymtab_command &LoadCommand) {
288
289  IO.mapRequired("ilocalsym", LoadCommand.ilocalsym);
290  IO.mapRequired("nlocalsym", LoadCommand.nlocalsym);
291  IO.mapRequired("iextdefsym", LoadCommand.iextdefsym);
292  IO.mapRequired("nextdefsym", LoadCommand.nextdefsym);
293  IO.mapRequired("iundefsym", LoadCommand.iundefsym);
294  IO.mapRequired("nundefsym", LoadCommand.nundefsym);
295  IO.mapRequired("tocoff", LoadCommand.tocoff);
296  IO.mapRequired("ntoc", LoadCommand.ntoc);
297  IO.mapRequired("modtaboff", LoadCommand.modtaboff);
298  IO.mapRequired("nmodtab", LoadCommand.nmodtab);
299  IO.mapRequired("extrefsymoff", LoadCommand.extrefsymoff);
300  IO.mapRequired("nextrefsyms", LoadCommand.nextrefsyms);
301  IO.mapRequired("indirectsymoff", LoadCommand.indirectsymoff);
302  IO.mapRequired("nindirectsyms", LoadCommand.nindirectsyms);
303  IO.mapRequired("extreloff", LoadCommand.extreloff);
304  IO.mapRequired("nextrel", LoadCommand.nextrel);
305  IO.mapRequired("locreloff", LoadCommand.locreloff);
306  IO.mapRequired("nlocrel", LoadCommand.nlocrel);
307}
308
309void MappingTraits<MachO::encryption_info_command>::mapping(
310    IO &IO, MachO::encryption_info_command &LoadCommand) {
311
312  IO.mapRequired("cryptoff", LoadCommand.cryptoff);
313  IO.mapRequired("cryptsize", LoadCommand.cryptsize);
314  IO.mapRequired("cryptid", LoadCommand.cryptid);
315}
316
317void MappingTraits<MachO::encryption_info_command_64>::mapping(
318    IO &IO, MachO::encryption_info_command_64 &LoadCommand) {
319
320  IO.mapRequired("cryptoff", LoadCommand.cryptoff);
321  IO.mapRequired("cryptsize", LoadCommand.cryptsize);
322  IO.mapRequired("cryptid", LoadCommand.cryptid);
323  IO.mapRequired("pad", LoadCommand.pad);
324}
325
326void MappingTraits<MachO::entry_point_command>::mapping(
327    IO &IO, MachO::entry_point_command &LoadCommand) {
328
329  IO.mapRequired("entryoff", LoadCommand.entryoff);
330  IO.mapRequired("stacksize", LoadCommand.stacksize);
331}
332
333void MappingTraits<MachO::fvmfile_command>::mapping(
334    IO &IO, MachO::fvmfile_command &LoadCommand) {
335
336  IO.mapRequired("name", LoadCommand.name);
337  IO.mapRequired("header_addr", LoadCommand.header_addr);
338}
339
340void MappingTraits<MachO::fvmlib>::mapping(IO &IO, MachO::fvmlib &FVMLib) {
341  IO.mapRequired("name", FVMLib.name);
342  IO.mapRequired("minor_version", FVMLib.minor_version);
343  IO.mapRequired("header_addr", FVMLib.header_addr);
344}
345
346void MappingTraits<MachO::fvmlib_command>::mapping(
347    IO &IO, MachO::fvmlib_command &LoadCommand) {
348
349  IO.mapRequired("fvmlib", LoadCommand.fvmlib);
350}
351
352void MappingTraits<MachO::ident_command>::mapping(
353    IO &IO, MachO::ident_command &LoadCommand) {}
354
355void MappingTraits<MachO::linkedit_data_command>::mapping(
356    IO &IO, MachO::linkedit_data_command &LoadCommand) {
357
358  IO.mapRequired("dataoff", LoadCommand.dataoff);
359  IO.mapRequired("datasize", LoadCommand.datasize);
360}
361
362void MappingTraits<MachO::linker_option_command>::mapping(
363    IO &IO, MachO::linker_option_command &LoadCommand) {
364
365  IO.mapRequired("count", LoadCommand.count);
366}
367
368void MappingTraits<MachO::prebind_cksum_command>::mapping(
369    IO &IO, MachO::prebind_cksum_command &LoadCommand) {
370
371  IO.mapRequired("cksum", LoadCommand.cksum);
372}
373
374void MappingTraits<MachO::load_command>::mapping(
375    IO &IO, MachO::load_command &LoadCommand) {}
376
377void MappingTraits<MachO::prebound_dylib_command>::mapping(
378    IO &IO, MachO::prebound_dylib_command &LoadCommand) {
379
380  IO.mapRequired("name", LoadCommand.name);
381  IO.mapRequired("nmodules", LoadCommand.nmodules);
382  IO.mapRequired("linked_modules", LoadCommand.linked_modules);
383}
384
385void MappingTraits<MachO::routines_command>::mapping(
386    IO &IO, MachO::routines_command &LoadCommand) {
387
388  IO.mapRequired("init_address", LoadCommand.init_address);
389  IO.mapRequired("init_module", LoadCommand.init_module);
390  IO.mapRequired("reserved1", LoadCommand.reserved1);
391  IO.mapRequired("reserved2", LoadCommand.reserved2);
392  IO.mapRequired("reserved3", LoadCommand.reserved3);
393  IO.mapRequired("reserved4", LoadCommand.reserved4);
394  IO.mapRequired("reserved5", LoadCommand.reserved5);
395  IO.mapRequired("reserved6", LoadCommand.reserved6);
396}
397
398void MappingTraits<MachO::routines_command_64>::mapping(
399    IO &IO, MachO::routines_command_64 &LoadCommand) {
400
401  IO.mapRequired("init_address", LoadCommand.init_address);
402  IO.mapRequired("init_module", LoadCommand.init_module);
403  IO.mapRequired("reserved1", LoadCommand.reserved1);
404  IO.mapRequired("reserved2", LoadCommand.reserved2);
405  IO.mapRequired("reserved3", LoadCommand.reserved3);
406  IO.mapRequired("reserved4", LoadCommand.reserved4);
407  IO.mapRequired("reserved5", LoadCommand.reserved5);
408  IO.mapRequired("reserved6", LoadCommand.reserved6);
409}
410
411void MappingTraits<MachO::rpath_command>::mapping(
412    IO &IO, MachO::rpath_command &LoadCommand) {
413
414  IO.mapRequired("path", LoadCommand.path);
415}
416
417void MappingTraits<MachO::section>::mapping(IO &IO, MachO::section &Section) {
418  IO.mapRequired("sectname", Section.sectname);
419  IO.mapRequired("segname", Section.segname);
420  IO.mapRequired("addr", Section.addr);
421  IO.mapRequired("size", Section.size);
422  IO.mapRequired("offset", Section.offset);
423  IO.mapRequired("align", Section.align);
424  IO.mapRequired("reloff", Section.reloff);
425  IO.mapRequired("nreloc", Section.nreloc);
426  IO.mapRequired("flags", Section.flags);
427  IO.mapRequired("reserved1", Section.reserved1);
428  IO.mapRequired("reserved2", Section.reserved2);
429}
430
431void MappingTraits<MachO::section_64>::mapping(IO &IO,
432                                               MachO::section_64 &Section) {
433  IO.mapRequired("sectname", Section.sectname);
434  IO.mapRequired("segname", Section.segname);
435  IO.mapRequired("addr", Section.addr);
436  IO.mapRequired("size", Section.size);
437  IO.mapRequired("offset", Section.offset);
438  IO.mapRequired("align", Section.align);
439  IO.mapRequired("reloff", Section.reloff);
440  IO.mapRequired("nreloc", Section.nreloc);
441  IO.mapRequired("flags", Section.flags);
442  IO.mapRequired("reserved1", Section.reserved1);
443  IO.mapRequired("reserved2", Section.reserved2);
444  IO.mapRequired("reserved3", Section.reserved3);
445}
446
447void MappingTraits<MachO::segment_command>::mapping(
448    IO &IO, MachO::segment_command &LoadCommand) {
449
450  IO.mapRequired("segname", LoadCommand.segname);
451  IO.mapRequired("vmaddr", LoadCommand.vmaddr);
452  IO.mapRequired("vmsize", LoadCommand.vmsize);
453  IO.mapRequired("fileoff", LoadCommand.fileoff);
454  IO.mapRequired("filesize", LoadCommand.filesize);
455  IO.mapRequired("maxprot", LoadCommand.maxprot);
456  IO.mapRequired("initprot", LoadCommand.initprot);
457  IO.mapRequired("nsects", LoadCommand.nsects);
458  IO.mapRequired("flags", LoadCommand.flags);
459}
460
461void MappingTraits<MachO::segment_command_64>::mapping(
462    IO &IO, MachO::segment_command_64 &LoadCommand) {
463
464  IO.mapRequired("segname", LoadCommand.segname);
465  IO.mapRequired("vmaddr", LoadCommand.vmaddr);
466  IO.mapRequired("vmsize", LoadCommand.vmsize);
467  IO.mapRequired("fileoff", LoadCommand.fileoff);
468  IO.mapRequired("filesize", LoadCommand.filesize);
469  IO.mapRequired("maxprot", LoadCommand.maxprot);
470  IO.mapRequired("initprot", LoadCommand.initprot);
471  IO.mapRequired("nsects", LoadCommand.nsects);
472  IO.mapRequired("flags", LoadCommand.flags);
473}
474
475void MappingTraits<MachO::source_version_command>::mapping(
476    IO &IO, MachO::source_version_command &LoadCommand) {
477
478  IO.mapRequired("version", LoadCommand.version);
479}
480
481void MappingTraits<MachO::sub_client_command>::mapping(
482    IO &IO, MachO::sub_client_command &LoadCommand) {
483
484  IO.mapRequired("client", LoadCommand.client);
485}
486
487void MappingTraits<MachO::sub_framework_command>::mapping(
488    IO &IO, MachO::sub_framework_command &LoadCommand) {
489
490  IO.mapRequired("umbrella", LoadCommand.umbrella);
491}
492
493void MappingTraits<MachO::sub_library_command>::mapping(
494    IO &IO, MachO::sub_library_command &LoadCommand) {
495
496  IO.mapRequired("sub_library", LoadCommand.sub_library);
497}
498
499void MappingTraits<MachO::sub_umbrella_command>::mapping(
500    IO &IO, MachO::sub_umbrella_command &LoadCommand) {
501
502  IO.mapRequired("sub_umbrella", LoadCommand.sub_umbrella);
503}
504
505void MappingTraits<MachO::symseg_command>::mapping(
506    IO &IO, MachO::symseg_command &LoadCommand) {
507
508  IO.mapRequired("offset", LoadCommand.offset);
509  IO.mapRequired("size", LoadCommand.size);
510}
511
512void MappingTraits<MachO::symtab_command>::mapping(
513    IO &IO, MachO::symtab_command &LoadCommand) {
514
515  IO.mapRequired("symoff", LoadCommand.symoff);
516  IO.mapRequired("nsyms", LoadCommand.nsyms);
517  IO.mapRequired("stroff", LoadCommand.stroff);
518  IO.mapRequired("strsize", LoadCommand.strsize);
519}
520
521void MappingTraits<MachO::thread_command>::mapping(
522    IO &IO, MachO::thread_command &LoadCommand) {}
523
524void MappingTraits<MachO::twolevel_hints_command>::mapping(
525    IO &IO, MachO::twolevel_hints_command &LoadCommand) {
526
527  IO.mapRequired("offset", LoadCommand.offset);
528  IO.mapRequired("nhints", LoadCommand.nhints);
529}
530
531void MappingTraits<MachO::uuid_command>::mapping(
532    IO &IO, MachO::uuid_command &LoadCommand) {
533
534  IO.mapRequired("uuid", LoadCommand.uuid);
535}
536
537void MappingTraits<MachO::version_min_command>::mapping(
538    IO &IO, MachO::version_min_command &LoadCommand) {
539
540  IO.mapRequired("version", LoadCommand.version);
541  IO.mapRequired("sdk", LoadCommand.sdk);
542}
543
544} // namespace llvm::yaml
545
546} // namespace llvm
547