File: | tools/llvm-objdump/MachODump.cpp |
Location: | line 1987, column 25 |
Description: | Function call argument is an uninitialized value |
1 | //===-- MachODump.cpp - Object file dumping utility for llvm --------------===// | |||
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 implements the MachO-specific dumper for llvm-objdump. | |||
11 | // | |||
12 | //===----------------------------------------------------------------------===// | |||
13 | ||||
14 | #include "llvm-objdump.h" | |||
15 | #include "llvm-c/Disassembler.h" | |||
16 | #include "llvm/ADT/STLExtras.h" | |||
17 | #include "llvm/ADT/StringExtras.h" | |||
18 | #include "llvm/ADT/Triple.h" | |||
19 | #include "llvm/Config/config.h" | |||
20 | #include "llvm/DebugInfo/DWARF/DIContext.h" | |||
21 | #include "llvm/MC/MCAsmInfo.h" | |||
22 | #include "llvm/MC/MCContext.h" | |||
23 | #include "llvm/MC/MCDisassembler.h" | |||
24 | #include "llvm/MC/MCInst.h" | |||
25 | #include "llvm/MC/MCInstPrinter.h" | |||
26 | #include "llvm/MC/MCInstrDesc.h" | |||
27 | #include "llvm/MC/MCInstrInfo.h" | |||
28 | #include "llvm/MC/MCRegisterInfo.h" | |||
29 | #include "llvm/MC/MCSubtargetInfo.h" | |||
30 | #include "llvm/Object/MachO.h" | |||
31 | #include "llvm/Object/MachOUniversal.h" | |||
32 | #include "llvm/Support/Casting.h" | |||
33 | #include "llvm/Support/CommandLine.h" | |||
34 | #include "llvm/Support/Debug.h" | |||
35 | #include "llvm/Support/Endian.h" | |||
36 | #include "llvm/Support/Format.h" | |||
37 | #include "llvm/Support/FormattedStream.h" | |||
38 | #include "llvm/Support/GraphWriter.h" | |||
39 | #include "llvm/Support/LEB128.h" | |||
40 | #include "llvm/Support/MachO.h" | |||
41 | #include "llvm/Support/MemoryBuffer.h" | |||
42 | #include "llvm/Support/TargetRegistry.h" | |||
43 | #include "llvm/Support/TargetSelect.h" | |||
44 | #include "llvm/Support/raw_ostream.h" | |||
45 | #include <algorithm> | |||
46 | #include <cstring> | |||
47 | #include <system_error> | |||
48 | ||||
49 | #if HAVE_CXXABI_H1 | |||
50 | #include <cxxabi.h> | |||
51 | #endif | |||
52 | ||||
53 | using namespace llvm; | |||
54 | using namespace object; | |||
55 | ||||
56 | static cl::opt<bool> | |||
57 | UseDbg("g", | |||
58 | cl::desc("Print line information from debug info if available")); | |||
59 | ||||
60 | static cl::opt<std::string> DSYMFile("dsym", | |||
61 | cl::desc("Use .dSYM file for debug info")); | |||
62 | ||||
63 | static cl::opt<bool> FullLeadingAddr("full-leading-addr", | |||
64 | cl::desc("Print full leading address")); | |||
65 | ||||
66 | static cl::opt<bool> NoLeadingAddr("no-leading-addr", | |||
67 | cl::desc("Print no leading address")); | |||
68 | ||||
69 | static cl::opt<bool> | |||
70 | PrintImmHex("print-imm-hex", | |||
71 | cl::desc("Use hex format for immediate values")); | |||
72 | ||||
73 | cl::opt<bool> llvm::UniversalHeaders("universal-headers", | |||
74 | cl::desc("Print Mach-O universal headers " | |||
75 | "(requires -macho)")); | |||
76 | ||||
77 | cl::opt<bool> | |||
78 | llvm::ArchiveHeaders("archive-headers", | |||
79 | cl::desc("Print archive headers for Mach-O archives " | |||
80 | "(requires -macho)")); | |||
81 | ||||
82 | cl::opt<bool> | |||
83 | llvm::IndirectSymbols("indirect-symbols", | |||
84 | cl::desc("Print indirect symbol table for Mach-O " | |||
85 | "objects (requires -macho)")); | |||
86 | ||||
87 | cl::opt<bool> | |||
88 | llvm::DataInCode("data-in-code", | |||
89 | cl::desc("Print the data in code table for Mach-O objects " | |||
90 | "(requires -macho)")); | |||
91 | ||||
92 | cl::opt<bool> | |||
93 | llvm::LinkOptHints("link-opt-hints", | |||
94 | cl::desc("Print the linker optimization hints for " | |||
95 | "Mach-O objects (requires -macho)")); | |||
96 | ||||
97 | cl::list<std::string> | |||
98 | llvm::DumpSections("section", | |||
99 | cl::desc("Prints the specified segment,section for " | |||
100 | "Mach-O objects (requires -macho)")); | |||
101 | ||||
102 | cl::opt<bool> | |||
103 | llvm::InfoPlist("info-plist", | |||
104 | cl::desc("Print the info plist section as strings for " | |||
105 | "Mach-O objects (requires -macho)")); | |||
106 | ||||
107 | cl::opt<bool> | |||
108 | llvm::DylibsUsed("dylibs-used", | |||
109 | cl::desc("Print the shared libraries used for linked " | |||
110 | "Mach-O files (requires -macho)")); | |||
111 | ||||
112 | cl::opt<bool> | |||
113 | llvm::DylibId("dylib-id", | |||
114 | cl::desc("Print the shared library's id for the dylib Mach-O " | |||
115 | "file (requires -macho)")); | |||
116 | ||||
117 | cl::opt<bool> | |||
118 | llvm::NonVerbose("non-verbose", | |||
119 | cl::desc("Print the info for Mach-O objects in " | |||
120 | "non-verbose or numeric form (requires -macho)")); | |||
121 | ||||
122 | cl::opt<std::string> llvm::DisSymName( | |||
123 | "dis-symname", | |||
124 | cl::desc("disassemble just this symbol's instructions (requires -macho")); | |||
125 | ||||
126 | static cl::opt<bool> NoSymbolicOperands( | |||
127 | "no-symbolic-operands", | |||
128 | cl::desc("do not symbolic operands when disassembling (requires -macho)")); | |||
129 | ||||
130 | ||||
131 | static cl::list<std::string> | |||
132 | ArchFlags("arch", cl::desc("architecture(s) from a Mach-O file to dump"), | |||
133 | cl::ZeroOrMore); | |||
134 | bool ArchAll = false; | |||
135 | ||||
136 | static std::string ThumbTripleName; | |||
137 | ||||
138 | static const Target *GetTarget(const MachOObjectFile *MachOObj, | |||
139 | const char **McpuDefault, | |||
140 | const Target **ThumbTarget) { | |||
141 | // Figure out the target triple. | |||
142 | if (TripleName.empty()) { | |||
143 | llvm::Triple TT("unknown-unknown-unknown"); | |||
144 | llvm::Triple ThumbTriple = Triple(); | |||
145 | TT = MachOObj->getArch(McpuDefault, &ThumbTriple); | |||
146 | TripleName = TT.str(); | |||
147 | ThumbTripleName = ThumbTriple.str(); | |||
148 | } | |||
149 | ||||
150 | // Get the target specific parser. | |||
151 | std::string Error; | |||
152 | const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error); | |||
153 | if (TheTarget && ThumbTripleName.empty()) | |||
154 | return TheTarget; | |||
155 | ||||
156 | *ThumbTarget = TargetRegistry::lookupTarget(ThumbTripleName, Error); | |||
157 | if (*ThumbTarget) | |||
158 | return TheTarget; | |||
159 | ||||
160 | errs() << "llvm-objdump: error: unable to get target for '"; | |||
161 | if (!TheTarget) | |||
162 | errs() << TripleName; | |||
163 | else | |||
164 | errs() << ThumbTripleName; | |||
165 | errs() << "', see --version and --triple.\n"; | |||
166 | return nullptr; | |||
167 | } | |||
168 | ||||
169 | struct SymbolSorter { | |||
170 | bool operator()(const SymbolRef &A, const SymbolRef &B) { | |||
171 | SymbolRef::Type AType, BType; | |||
172 | A.getType(AType); | |||
173 | B.getType(BType); | |||
174 | ||||
175 | uint64_t AAddr, BAddr; | |||
176 | if (AType != SymbolRef::ST_Function) | |||
177 | AAddr = 0; | |||
178 | else | |||
179 | A.getAddress(AAddr); | |||
180 | if (BType != SymbolRef::ST_Function) | |||
181 | BAddr = 0; | |||
182 | else | |||
183 | B.getAddress(BAddr); | |||
184 | return AAddr < BAddr; | |||
185 | } | |||
186 | }; | |||
187 | ||||
188 | // Types for the storted data in code table that is built before disassembly | |||
189 | // and the predicate function to sort them. | |||
190 | typedef std::pair<uint64_t, DiceRef> DiceTableEntry; | |||
191 | typedef std::vector<DiceTableEntry> DiceTable; | |||
192 | typedef DiceTable::iterator dice_table_iterator; | |||
193 | ||||
194 | // This is used to search for a data in code table entry for the PC being | |||
195 | // disassembled. The j parameter has the PC in j.first. A single data in code | |||
196 | // table entry can cover many bytes for each of its Kind's. So if the offset, | |||
197 | // aka the i.first value, of the data in code table entry plus its Length | |||
198 | // covers the PC being searched for this will return true. If not it will | |||
199 | // return false. | |||
200 | static bool compareDiceTableEntries(const DiceTableEntry &i, | |||
201 | const DiceTableEntry &j) { | |||
202 | uint16_t Length; | |||
203 | i.second.getLength(Length); | |||
204 | ||||
205 | return j.first >= i.first && j.first < i.first + Length; | |||
206 | } | |||
207 | ||||
208 | static uint64_t DumpDataInCode(const uint8_t *bytes, uint64_t Length, | |||
209 | unsigned short Kind) { | |||
210 | uint32_t Value, Size = 1; | |||
211 | ||||
212 | switch (Kind) { | |||
213 | default: | |||
214 | case MachO::DICE_KIND_DATA: | |||
215 | if (Length >= 4) { | |||
216 | if (!NoShowRawInsn) | |||
217 | DumpBytes(ArrayRef<uint8_t>(bytes, 4)); | |||
218 | Value = bytes[3] << 24 | bytes[2] << 16 | bytes[1] << 8 | bytes[0]; | |||
219 | outs() << "\t.long " << Value; | |||
220 | Size = 4; | |||
221 | } else if (Length >= 2) { | |||
222 | if (!NoShowRawInsn) | |||
223 | DumpBytes(ArrayRef<uint8_t>(bytes, 2)); | |||
224 | Value = bytes[1] << 8 | bytes[0]; | |||
225 | outs() << "\t.short " << Value; | |||
226 | Size = 2; | |||
227 | } else { | |||
228 | if (!NoShowRawInsn) | |||
229 | DumpBytes(ArrayRef<uint8_t>(bytes, 2)); | |||
230 | Value = bytes[0]; | |||
231 | outs() << "\t.byte " << Value; | |||
232 | Size = 1; | |||
233 | } | |||
234 | if (Kind == MachO::DICE_KIND_DATA) | |||
235 | outs() << "\t@ KIND_DATA\n"; | |||
236 | else | |||
237 | outs() << "\t@ data in code kind = " << Kind << "\n"; | |||
238 | break; | |||
239 | case MachO::DICE_KIND_JUMP_TABLE8: | |||
240 | if (!NoShowRawInsn) | |||
241 | DumpBytes(ArrayRef<uint8_t>(bytes, 1)); | |||
242 | Value = bytes[0]; | |||
243 | outs() << "\t.byte " << format("%3u", Value) << "\t@ KIND_JUMP_TABLE8\n"; | |||
244 | Size = 1; | |||
245 | break; | |||
246 | case MachO::DICE_KIND_JUMP_TABLE16: | |||
247 | if (!NoShowRawInsn) | |||
248 | DumpBytes(ArrayRef<uint8_t>(bytes, 2)); | |||
249 | Value = bytes[1] << 8 | bytes[0]; | |||
250 | outs() << "\t.short " << format("%5u", Value & 0xffff) | |||
251 | << "\t@ KIND_JUMP_TABLE16\n"; | |||
252 | Size = 2; | |||
253 | break; | |||
254 | case MachO::DICE_KIND_JUMP_TABLE32: | |||
255 | case MachO::DICE_KIND_ABS_JUMP_TABLE32: | |||
256 | if (!NoShowRawInsn) | |||
257 | DumpBytes(ArrayRef<uint8_t>(bytes, 4)); | |||
258 | Value = bytes[3] << 24 | bytes[2] << 16 | bytes[1] << 8 | bytes[0]; | |||
259 | outs() << "\t.long " << Value; | |||
260 | if (Kind == MachO::DICE_KIND_JUMP_TABLE32) | |||
261 | outs() << "\t@ KIND_JUMP_TABLE32\n"; | |||
262 | else | |||
263 | outs() << "\t@ KIND_ABS_JUMP_TABLE32\n"; | |||
264 | Size = 4; | |||
265 | break; | |||
266 | } | |||
267 | return Size; | |||
268 | } | |||
269 | ||||
270 | static void getSectionsAndSymbols(const MachO::mach_header Header, | |||
271 | MachOObjectFile *MachOObj, | |||
272 | std::vector<SectionRef> &Sections, | |||
273 | std::vector<SymbolRef> &Symbols, | |||
274 | SmallVectorImpl<uint64_t> &FoundFns, | |||
275 | uint64_t &BaseSegmentAddress) { | |||
276 | for (const SymbolRef &Symbol : MachOObj->symbols()) { | |||
277 | StringRef SymName; | |||
278 | Symbol.getName(SymName); | |||
279 | if (!SymName.startswith("ltmp")) | |||
280 | Symbols.push_back(Symbol); | |||
281 | } | |||
282 | ||||
283 | for (const SectionRef &Section : MachOObj->sections()) { | |||
284 | StringRef SectName; | |||
285 | Section.getName(SectName); | |||
286 | Sections.push_back(Section); | |||
287 | } | |||
288 | ||||
289 | MachOObjectFile::LoadCommandInfo Command = | |||
290 | MachOObj->getFirstLoadCommandInfo(); | |||
291 | bool BaseSegmentAddressSet = false; | |||
292 | for (unsigned i = 0;; ++i) { | |||
293 | if (Command.C.cmd == MachO::LC_FUNCTION_STARTS) { | |||
294 | // We found a function starts segment, parse the addresses for later | |||
295 | // consumption. | |||
296 | MachO::linkedit_data_command LLC = | |||
297 | MachOObj->getLinkeditDataLoadCommand(Command); | |||
298 | ||||
299 | MachOObj->ReadULEB128s(LLC.dataoff, FoundFns); | |||
300 | } else if (Command.C.cmd == MachO::LC_SEGMENT) { | |||
301 | MachO::segment_command SLC = MachOObj->getSegmentLoadCommand(Command); | |||
302 | StringRef SegName = SLC.segname; | |||
303 | if (!BaseSegmentAddressSet && SegName != "__PAGEZERO") { | |||
304 | BaseSegmentAddressSet = true; | |||
305 | BaseSegmentAddress = SLC.vmaddr; | |||
306 | } | |||
307 | } | |||
308 | ||||
309 | if (i == Header.ncmds - 1) | |||
310 | break; | |||
311 | else | |||
312 | Command = MachOObj->getNextLoadCommandInfo(Command); | |||
313 | } | |||
314 | } | |||
315 | ||||
316 | static void PrintIndirectSymbolTable(MachOObjectFile *O, bool verbose, | |||
317 | uint32_t n, uint32_t count, | |||
318 | uint32_t stride, uint64_t addr) { | |||
319 | MachO::dysymtab_command Dysymtab = O->getDysymtabLoadCommand(); | |||
320 | uint32_t nindirectsyms = Dysymtab.nindirectsyms; | |||
321 | if (n > nindirectsyms) | |||
322 | outs() << " (entries start past the end of the indirect symbol " | |||
323 | "table) (reserved1 field greater than the table size)"; | |||
324 | else if (n + count > nindirectsyms) | |||
325 | outs() << " (entries extends past the end of the indirect symbol " | |||
326 | "table)"; | |||
327 | outs() << "\n"; | |||
328 | uint32_t cputype = O->getHeader().cputype; | |||
329 | if (cputype & MachO::CPU_ARCH_ABI64) | |||
330 | outs() << "address index"; | |||
331 | else | |||
332 | outs() << "address index"; | |||
333 | if (verbose) | |||
334 | outs() << " name\n"; | |||
335 | else | |||
336 | outs() << "\n"; | |||
337 | for (uint32_t j = 0; j < count && n + j < nindirectsyms; j++) { | |||
338 | if (cputype & MachO::CPU_ARCH_ABI64) | |||
339 | outs() << format("0x%016" PRIx64"l" "x", addr + j * stride) << " "; | |||
340 | else | |||
341 | outs() << format("0x%08" PRIx32"x", addr + j * stride) << " "; | |||
342 | MachO::dysymtab_command Dysymtab = O->getDysymtabLoadCommand(); | |||
343 | uint32_t indirect_symbol = O->getIndirectSymbolTableEntry(Dysymtab, n + j); | |||
344 | if (indirect_symbol == MachO::INDIRECT_SYMBOL_LOCAL) { | |||
345 | outs() << "LOCAL\n"; | |||
346 | continue; | |||
347 | } | |||
348 | if (indirect_symbol == | |||
349 | (MachO::INDIRECT_SYMBOL_LOCAL | MachO::INDIRECT_SYMBOL_ABS)) { | |||
350 | outs() << "LOCAL ABSOLUTE\n"; | |||
351 | continue; | |||
352 | } | |||
353 | if (indirect_symbol == MachO::INDIRECT_SYMBOL_ABS) { | |||
354 | outs() << "ABSOLUTE\n"; | |||
355 | continue; | |||
356 | } | |||
357 | outs() << format("%5u ", indirect_symbol); | |||
358 | if (verbose) { | |||
359 | MachO::symtab_command Symtab = O->getSymtabLoadCommand(); | |||
360 | if (indirect_symbol < Symtab.nsyms) { | |||
361 | symbol_iterator Sym = O->getSymbolByIndex(indirect_symbol); | |||
362 | SymbolRef Symbol = *Sym; | |||
363 | StringRef SymName; | |||
364 | Symbol.getName(SymName); | |||
365 | outs() << SymName; | |||
366 | } else { | |||
367 | outs() << "?"; | |||
368 | } | |||
369 | } | |||
370 | outs() << "\n"; | |||
371 | } | |||
372 | } | |||
373 | ||||
374 | static void PrintIndirectSymbols(MachOObjectFile *O, bool verbose) { | |||
375 | uint32_t LoadCommandCount = O->getHeader().ncmds; | |||
376 | MachOObjectFile::LoadCommandInfo Load = O->getFirstLoadCommandInfo(); | |||
377 | for (unsigned I = 0;; ++I) { | |||
378 | if (Load.C.cmd == MachO::LC_SEGMENT_64) { | |||
379 | MachO::segment_command_64 Seg = O->getSegment64LoadCommand(Load); | |||
380 | for (unsigned J = 0; J < Seg.nsects; ++J) { | |||
381 | MachO::section_64 Sec = O->getSection64(Load, J); | |||
382 | uint32_t section_type = Sec.flags & MachO::SECTION_TYPE; | |||
383 | if (section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS || | |||
384 | section_type == MachO::S_LAZY_SYMBOL_POINTERS || | |||
385 | section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS || | |||
386 | section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS || | |||
387 | section_type == MachO::S_SYMBOL_STUBS) { | |||
388 | uint32_t stride; | |||
389 | if (section_type == MachO::S_SYMBOL_STUBS) | |||
390 | stride = Sec.reserved2; | |||
391 | else | |||
392 | stride = 8; | |||
393 | if (stride == 0) { | |||
394 | outs() << "Can't print indirect symbols for (" << Sec.segname << "," | |||
395 | << Sec.sectname << ") " | |||
396 | << "(size of stubs in reserved2 field is zero)\n"; | |||
397 | continue; | |||
398 | } | |||
399 | uint32_t count = Sec.size / stride; | |||
400 | outs() << "Indirect symbols for (" << Sec.segname << "," | |||
401 | << Sec.sectname << ") " << count << " entries"; | |||
402 | uint32_t n = Sec.reserved1; | |||
403 | PrintIndirectSymbolTable(O, verbose, n, count, stride, Sec.addr); | |||
404 | } | |||
405 | } | |||
406 | } else if (Load.C.cmd == MachO::LC_SEGMENT) { | |||
407 | MachO::segment_command Seg = O->getSegmentLoadCommand(Load); | |||
408 | for (unsigned J = 0; J < Seg.nsects; ++J) { | |||
409 | MachO::section Sec = O->getSection(Load, J); | |||
410 | uint32_t section_type = Sec.flags & MachO::SECTION_TYPE; | |||
411 | if (section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS || | |||
412 | section_type == MachO::S_LAZY_SYMBOL_POINTERS || | |||
413 | section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS || | |||
414 | section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS || | |||
415 | section_type == MachO::S_SYMBOL_STUBS) { | |||
416 | uint32_t stride; | |||
417 | if (section_type == MachO::S_SYMBOL_STUBS) | |||
418 | stride = Sec.reserved2; | |||
419 | else | |||
420 | stride = 4; | |||
421 | if (stride == 0) { | |||
422 | outs() << "Can't print indirect symbols for (" << Sec.segname << "," | |||
423 | << Sec.sectname << ") " | |||
424 | << "(size of stubs in reserved2 field is zero)\n"; | |||
425 | continue; | |||
426 | } | |||
427 | uint32_t count = Sec.size / stride; | |||
428 | outs() << "Indirect symbols for (" << Sec.segname << "," | |||
429 | << Sec.sectname << ") " << count << " entries"; | |||
430 | uint32_t n = Sec.reserved1; | |||
431 | PrintIndirectSymbolTable(O, verbose, n, count, stride, Sec.addr); | |||
432 | } | |||
433 | } | |||
434 | } | |||
435 | if (I == LoadCommandCount - 1) | |||
436 | break; | |||
437 | else | |||
438 | Load = O->getNextLoadCommandInfo(Load); | |||
439 | } | |||
440 | } | |||
441 | ||||
442 | static void PrintDataInCodeTable(MachOObjectFile *O, bool verbose) { | |||
443 | MachO::linkedit_data_command DIC = O->getDataInCodeLoadCommand(); | |||
444 | uint32_t nentries = DIC.datasize / sizeof(struct MachO::data_in_code_entry); | |||
445 | outs() << "Data in code table (" << nentries << " entries)\n"; | |||
446 | outs() << "offset length kind\n"; | |||
447 | for (dice_iterator DI = O->begin_dices(), DE = O->end_dices(); DI != DE; | |||
448 | ++DI) { | |||
449 | uint32_t Offset; | |||
450 | DI->getOffset(Offset); | |||
451 | outs() << format("0x%08" PRIx32"x", Offset) << " "; | |||
452 | uint16_t Length; | |||
453 | DI->getLength(Length); | |||
454 | outs() << format("%6u", Length) << " "; | |||
455 | uint16_t Kind; | |||
456 | DI->getKind(Kind); | |||
457 | if (verbose) { | |||
458 | switch (Kind) { | |||
459 | case MachO::DICE_KIND_DATA: | |||
460 | outs() << "DATA"; | |||
461 | break; | |||
462 | case MachO::DICE_KIND_JUMP_TABLE8: | |||
463 | outs() << "JUMP_TABLE8"; | |||
464 | break; | |||
465 | case MachO::DICE_KIND_JUMP_TABLE16: | |||
466 | outs() << "JUMP_TABLE16"; | |||
467 | break; | |||
468 | case MachO::DICE_KIND_JUMP_TABLE32: | |||
469 | outs() << "JUMP_TABLE32"; | |||
470 | break; | |||
471 | case MachO::DICE_KIND_ABS_JUMP_TABLE32: | |||
472 | outs() << "ABS_JUMP_TABLE32"; | |||
473 | break; | |||
474 | default: | |||
475 | outs() << format("0x%04" PRIx32"x", Kind); | |||
476 | break; | |||
477 | } | |||
478 | } else | |||
479 | outs() << format("0x%04" PRIx32"x", Kind); | |||
480 | outs() << "\n"; | |||
481 | } | |||
482 | } | |||
483 | ||||
484 | static void PrintLinkOptHints(MachOObjectFile *O) { | |||
485 | MachO::linkedit_data_command LohLC = O->getLinkOptHintsLoadCommand(); | |||
486 | const char *loh = O->getData().substr(LohLC.dataoff, 1).data(); | |||
487 | uint32_t nloh = LohLC.datasize; | |||
488 | outs() << "Linker optimiztion hints (" << nloh << " total bytes)\n"; | |||
489 | for (uint32_t i = 0; i < nloh;) { | |||
490 | unsigned n; | |||
491 | uint64_t identifier = decodeULEB128((const uint8_t *)(loh + i), &n); | |||
492 | i += n; | |||
493 | outs() << " identifier " << identifier << " "; | |||
494 | if (i >= nloh) | |||
495 | return; | |||
496 | switch (identifier) { | |||
497 | case 1: | |||
498 | outs() << "AdrpAdrp\n"; | |||
499 | break; | |||
500 | case 2: | |||
501 | outs() << "AdrpLdr\n"; | |||
502 | break; | |||
503 | case 3: | |||
504 | outs() << "AdrpAddLdr\n"; | |||
505 | break; | |||
506 | case 4: | |||
507 | outs() << "AdrpLdrGotLdr\n"; | |||
508 | break; | |||
509 | case 5: | |||
510 | outs() << "AdrpAddStr\n"; | |||
511 | break; | |||
512 | case 6: | |||
513 | outs() << "AdrpLdrGotStr\n"; | |||
514 | break; | |||
515 | case 7: | |||
516 | outs() << "AdrpAdd\n"; | |||
517 | break; | |||
518 | case 8: | |||
519 | outs() << "AdrpLdrGot\n"; | |||
520 | break; | |||
521 | default: | |||
522 | outs() << "Unknown identifier value\n"; | |||
523 | break; | |||
524 | } | |||
525 | uint64_t narguments = decodeULEB128((const uint8_t *)(loh + i), &n); | |||
526 | i += n; | |||
527 | outs() << " narguments " << narguments << "\n"; | |||
528 | if (i >= nloh) | |||
529 | return; | |||
530 | ||||
531 | for (uint32_t j = 0; j < narguments; j++) { | |||
532 | uint64_t value = decodeULEB128((const uint8_t *)(loh + i), &n); | |||
533 | i += n; | |||
534 | outs() << "\tvalue " << format("0x%" PRIx64"l" "x", value) << "\n"; | |||
535 | if (i >= nloh) | |||
536 | return; | |||
537 | } | |||
538 | } | |||
539 | } | |||
540 | ||||
541 | static void PrintDylibs(MachOObjectFile *O, bool JustId) { | |||
542 | uint32_t LoadCommandCount = O->getHeader().ncmds; | |||
543 | MachOObjectFile::LoadCommandInfo Load = O->getFirstLoadCommandInfo(); | |||
544 | for (unsigned I = 0;; ++I) { | |||
545 | if ((JustId && Load.C.cmd == MachO::LC_ID_DYLIB) || | |||
546 | (!JustId && (Load.C.cmd == MachO::LC_ID_DYLIB || | |||
547 | Load.C.cmd == MachO::LC_LOAD_DYLIB || | |||
548 | Load.C.cmd == MachO::LC_LOAD_WEAK_DYLIB || | |||
549 | Load.C.cmd == MachO::LC_REEXPORT_DYLIB || | |||
550 | Load.C.cmd == MachO::LC_LAZY_LOAD_DYLIB || | |||
551 | Load.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB))) { | |||
552 | MachO::dylib_command dl = O->getDylibIDLoadCommand(Load); | |||
553 | if (dl.dylib.name < dl.cmdsize) { | |||
554 | const char *p = (const char *)(Load.Ptr) + dl.dylib.name; | |||
555 | if (JustId) | |||
556 | outs() << p << "\n"; | |||
557 | else { | |||
558 | outs() << "\t" << p; | |||
559 | outs() << " (compatibility version " | |||
560 | << ((dl.dylib.compatibility_version >> 16) & 0xffff) << "." | |||
561 | << ((dl.dylib.compatibility_version >> 8) & 0xff) << "." | |||
562 | << (dl.dylib.compatibility_version & 0xff) << ","; | |||
563 | outs() << " current version " | |||
564 | << ((dl.dylib.current_version >> 16) & 0xffff) << "." | |||
565 | << ((dl.dylib.current_version >> 8) & 0xff) << "." | |||
566 | << (dl.dylib.current_version & 0xff) << ")\n"; | |||
567 | } | |||
568 | } else { | |||
569 | outs() << "\tBad offset (" << dl.dylib.name << ") for name of "; | |||
570 | if (Load.C.cmd == MachO::LC_ID_DYLIB) | |||
571 | outs() << "LC_ID_DYLIB "; | |||
572 | else if (Load.C.cmd == MachO::LC_LOAD_DYLIB) | |||
573 | outs() << "LC_LOAD_DYLIB "; | |||
574 | else if (Load.C.cmd == MachO::LC_LOAD_WEAK_DYLIB) | |||
575 | outs() << "LC_LOAD_WEAK_DYLIB "; | |||
576 | else if (Load.C.cmd == MachO::LC_LAZY_LOAD_DYLIB) | |||
577 | outs() << "LC_LAZY_LOAD_DYLIB "; | |||
578 | else if (Load.C.cmd == MachO::LC_REEXPORT_DYLIB) | |||
579 | outs() << "LC_REEXPORT_DYLIB "; | |||
580 | else if (Load.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) | |||
581 | outs() << "LC_LOAD_UPWARD_DYLIB "; | |||
582 | else | |||
583 | outs() << "LC_??? "; | |||
584 | outs() << "command " << I << "\n"; | |||
585 | } | |||
586 | } | |||
587 | if (I == LoadCommandCount - 1) | |||
588 | break; | |||
589 | else | |||
590 | Load = O->getNextLoadCommandInfo(Load); | |||
591 | } | |||
592 | } | |||
593 | ||||
594 | typedef DenseMap<uint64_t, StringRef> SymbolAddressMap; | |||
595 | ||||
596 | static void CreateSymbolAddressMap(MachOObjectFile *O, | |||
597 | SymbolAddressMap *AddrMap) { | |||
598 | // Create a map of symbol addresses to symbol names. | |||
599 | for (const SymbolRef &Symbol : O->symbols()) { | |||
600 | SymbolRef::Type ST; | |||
601 | Symbol.getType(ST); | |||
602 | if (ST == SymbolRef::ST_Function || ST == SymbolRef::ST_Data || | |||
603 | ST == SymbolRef::ST_Other) { | |||
604 | uint64_t Address; | |||
605 | Symbol.getAddress(Address); | |||
606 | StringRef SymName; | |||
607 | Symbol.getName(SymName); | |||
608 | (*AddrMap)[Address] = SymName; | |||
609 | } | |||
610 | } | |||
611 | } | |||
612 | ||||
613 | // GuessSymbolName is passed the address of what might be a symbol and a | |||
614 | // pointer to the SymbolAddressMap. It returns the name of a symbol | |||
615 | // with that address or nullptr if no symbol is found with that address. | |||
616 | static const char *GuessSymbolName(uint64_t value, SymbolAddressMap *AddrMap) { | |||
617 | const char *SymbolName = nullptr; | |||
618 | // A DenseMap can't lookup up some values. | |||
619 | if (value != 0xffffffffffffffffULL && value != 0xfffffffffffffffeULL) { | |||
620 | StringRef name = AddrMap->lookup(value); | |||
621 | if (!name.empty()) | |||
622 | SymbolName = name.data(); | |||
623 | } | |||
624 | return SymbolName; | |||
625 | } | |||
626 | ||||
627 | static void DumpCstringChar(const char c) { | |||
628 | char p[2]; | |||
629 | p[0] = c; | |||
630 | p[1] = '\0'; | |||
631 | outs().write_escaped(p); | |||
632 | } | |||
633 | ||||
634 | static void DumpCstringSection(MachOObjectFile *O, const char *sect, | |||
635 | uint32_t sect_size, uint64_t sect_addr, | |||
636 | bool print_addresses) { | |||
637 | for (uint32_t i = 0; i < sect_size; i++) { | |||
638 | if (print_addresses) { | |||
639 | if (O->is64Bit()) | |||
640 | outs() << format("%016" PRIx64"l" "x", sect_addr + i) << " "; | |||
641 | else | |||
642 | outs() << format("%08" PRIx64"l" "x", sect_addr + i) << " "; | |||
643 | } | |||
644 | for (; i < sect_size && sect[i] != '\0'; i++) | |||
645 | DumpCstringChar(sect[i]); | |||
646 | if (i < sect_size && sect[i] == '\0') | |||
647 | outs() << "\n"; | |||
648 | } | |||
649 | } | |||
650 | ||||
651 | static void DumpLiteral4(uint32_t l, float f) { | |||
652 | outs() << format("0x%08" PRIx32"x", l); | |||
653 | if ((l & 0x7f800000) != 0x7f800000) | |||
654 | outs() << format(" (%.16e)\n", f); | |||
655 | else { | |||
656 | if (l == 0x7f800000) | |||
657 | outs() << " (+Infinity)\n"; | |||
658 | else if (l == 0xff800000) | |||
659 | outs() << " (-Infinity)\n"; | |||
660 | else if ((l & 0x00400000) == 0x00400000) | |||
661 | outs() << " (non-signaling Not-a-Number)\n"; | |||
662 | else | |||
663 | outs() << " (signaling Not-a-Number)\n"; | |||
664 | } | |||
665 | } | |||
666 | ||||
667 | static void DumpLiteral4Section(MachOObjectFile *O, const char *sect, | |||
668 | uint32_t sect_size, uint64_t sect_addr, | |||
669 | bool print_addresses) { | |||
670 | for (uint32_t i = 0; i < sect_size; i += sizeof(float)) { | |||
671 | if (print_addresses) { | |||
672 | if (O->is64Bit()) | |||
673 | outs() << format("%016" PRIx64"l" "x", sect_addr + i) << " "; | |||
674 | else | |||
675 | outs() << format("%08" PRIx64"l" "x", sect_addr + i) << " "; | |||
676 | } | |||
677 | float f; | |||
678 | memcpy(&f, sect + i, sizeof(float)); | |||
679 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
680 | sys::swapByteOrder(f); | |||
681 | uint32_t l; | |||
682 | memcpy(&l, sect + i, sizeof(uint32_t)); | |||
683 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
684 | sys::swapByteOrder(l); | |||
685 | DumpLiteral4(l, f); | |||
686 | } | |||
687 | } | |||
688 | ||||
689 | static void DumpLiteral8(MachOObjectFile *O, uint32_t l0, uint32_t l1, | |||
690 | double d) { | |||
691 | outs() << format("0x%08" PRIx32"x", l0) << " " << format("0x%08" PRIx32"x", l1); | |||
692 | uint32_t Hi, Lo; | |||
693 | if (O->isLittleEndian()) { | |||
694 | Hi = l1; | |||
695 | Lo = l0; | |||
696 | } else { | |||
697 | Hi = l0; | |||
698 | Lo = l1; | |||
699 | } | |||
700 | // Hi is the high word, so this is equivalent to if(isfinite(d)) | |||
701 | if ((Hi & 0x7ff00000) != 0x7ff00000) | |||
702 | outs() << format(" (%.16e)\n", d); | |||
703 | else { | |||
704 | if (Hi == 0x7ff00000 && Lo == 0) | |||
705 | outs() << " (+Infinity)\n"; | |||
706 | else if (Hi == 0xfff00000 && Lo == 0) | |||
707 | outs() << " (-Infinity)\n"; | |||
708 | else if ((Hi & 0x00080000) == 0x00080000) | |||
709 | outs() << " (non-signaling Not-a-Number)\n"; | |||
710 | else | |||
711 | outs() << " (signaling Not-a-Number)\n"; | |||
712 | } | |||
713 | } | |||
714 | ||||
715 | static void DumpLiteral8Section(MachOObjectFile *O, const char *sect, | |||
716 | uint32_t sect_size, uint64_t sect_addr, | |||
717 | bool print_addresses) { | |||
718 | for (uint32_t i = 0; i < sect_size; i += sizeof(double)) { | |||
719 | if (print_addresses) { | |||
720 | if (O->is64Bit()) | |||
721 | outs() << format("%016" PRIx64"l" "x", sect_addr + i) << " "; | |||
722 | else | |||
723 | outs() << format("%08" PRIx64"l" "x", sect_addr + i) << " "; | |||
724 | } | |||
725 | double d; | |||
726 | memcpy(&d, sect + i, sizeof(double)); | |||
727 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
728 | sys::swapByteOrder(d); | |||
729 | uint32_t l0, l1; | |||
730 | memcpy(&l0, sect + i, sizeof(uint32_t)); | |||
731 | memcpy(&l1, sect + i + sizeof(uint32_t), sizeof(uint32_t)); | |||
732 | if (O->isLittleEndian() != sys::IsLittleEndianHost) { | |||
733 | sys::swapByteOrder(l0); | |||
734 | sys::swapByteOrder(l1); | |||
735 | } | |||
736 | DumpLiteral8(O, l0, l1, d); | |||
737 | } | |||
738 | } | |||
739 | ||||
740 | static void DumpLiteral16(uint32_t l0, uint32_t l1, uint32_t l2, uint32_t l3) { | |||
741 | outs() << format("0x%08" PRIx32"x", l0) << " "; | |||
742 | outs() << format("0x%08" PRIx32"x", l1) << " "; | |||
743 | outs() << format("0x%08" PRIx32"x", l2) << " "; | |||
744 | outs() << format("0x%08" PRIx32"x", l3) << "\n"; | |||
745 | } | |||
746 | ||||
747 | static void DumpLiteral16Section(MachOObjectFile *O, const char *sect, | |||
748 | uint32_t sect_size, uint64_t sect_addr, | |||
749 | bool print_addresses) { | |||
750 | for (uint32_t i = 0; i < sect_size; i += 16) { | |||
751 | if (print_addresses) { | |||
752 | if (O->is64Bit()) | |||
753 | outs() << format("%016" PRIx64"l" "x", sect_addr + i) << " "; | |||
754 | else | |||
755 | outs() << format("%08" PRIx64"l" "x", sect_addr + i) << " "; | |||
756 | } | |||
757 | uint32_t l0, l1, l2, l3; | |||
758 | memcpy(&l0, sect + i, sizeof(uint32_t)); | |||
759 | memcpy(&l1, sect + i + sizeof(uint32_t), sizeof(uint32_t)); | |||
760 | memcpy(&l2, sect + i + 2 * sizeof(uint32_t), sizeof(uint32_t)); | |||
761 | memcpy(&l3, sect + i + 3 * sizeof(uint32_t), sizeof(uint32_t)); | |||
762 | if (O->isLittleEndian() != sys::IsLittleEndianHost) { | |||
763 | sys::swapByteOrder(l0); | |||
764 | sys::swapByteOrder(l1); | |||
765 | sys::swapByteOrder(l2); | |||
766 | sys::swapByteOrder(l3); | |||
767 | } | |||
768 | DumpLiteral16(l0, l1, l2, l3); | |||
769 | } | |||
770 | } | |||
771 | ||||
772 | static void DumpLiteralPointerSection(MachOObjectFile *O, | |||
773 | const SectionRef &Section, | |||
774 | const char *sect, uint32_t sect_size, | |||
775 | uint64_t sect_addr, | |||
776 | bool print_addresses) { | |||
777 | // Collect the literal sections in this Mach-O file. | |||
778 | std::vector<SectionRef> LiteralSections; | |||
779 | for (const SectionRef &Section : O->sections()) { | |||
780 | DataRefImpl Ref = Section.getRawDataRefImpl(); | |||
781 | uint32_t section_type; | |||
782 | if (O->is64Bit()) { | |||
783 | const MachO::section_64 Sec = O->getSection64(Ref); | |||
784 | section_type = Sec.flags & MachO::SECTION_TYPE; | |||
785 | } else { | |||
786 | const MachO::section Sec = O->getSection(Ref); | |||
787 | section_type = Sec.flags & MachO::SECTION_TYPE; | |||
788 | } | |||
789 | if (section_type == MachO::S_CSTRING_LITERALS || | |||
790 | section_type == MachO::S_4BYTE_LITERALS || | |||
791 | section_type == MachO::S_8BYTE_LITERALS || | |||
792 | section_type == MachO::S_16BYTE_LITERALS) | |||
793 | LiteralSections.push_back(Section); | |||
794 | } | |||
795 | ||||
796 | // Set the size of the literal pointer. | |||
797 | uint32_t lp_size = O->is64Bit() ? 8 : 4; | |||
798 | ||||
799 | // Collect the external relocation symbols for the the literal pointers. | |||
800 | std::vector<std::pair<uint64_t, SymbolRef>> Relocs; | |||
801 | for (const RelocationRef &Reloc : Section.relocations()) { | |||
802 | DataRefImpl Rel; | |||
803 | MachO::any_relocation_info RE; | |||
804 | bool isExtern = false; | |||
805 | Rel = Reloc.getRawDataRefImpl(); | |||
806 | RE = O->getRelocation(Rel); | |||
807 | isExtern = O->getPlainRelocationExternal(RE); | |||
808 | if (isExtern) { | |||
809 | uint64_t RelocOffset; | |||
810 | Reloc.getOffset(RelocOffset); | |||
811 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
812 | Relocs.push_back(std::make_pair(RelocOffset, *RelocSym)); | |||
813 | } | |||
814 | } | |||
815 | array_pod_sort(Relocs.begin(), Relocs.end()); | |||
816 | ||||
817 | // Dump each literal pointer. | |||
818 | for (uint32_t i = 0; i < sect_size; i += lp_size) { | |||
819 | if (print_addresses) { | |||
820 | if (O->is64Bit()) | |||
821 | outs() << format("%016" PRIx64"l" "x", sect_addr + i) << " "; | |||
822 | else | |||
823 | outs() << format("%08" PRIx64"l" "x", sect_addr + i) << " "; | |||
824 | } | |||
825 | uint64_t lp; | |||
826 | if (O->is64Bit()) { | |||
827 | memcpy(&lp, sect + i, sizeof(uint64_t)); | |||
828 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
829 | sys::swapByteOrder(lp); | |||
830 | } else { | |||
831 | uint32_t li; | |||
832 | memcpy(&li, sect + i, sizeof(uint32_t)); | |||
833 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
834 | sys::swapByteOrder(li); | |||
835 | lp = li; | |||
836 | } | |||
837 | ||||
838 | // First look for an external relocation entry for this literal pointer. | |||
839 | bool reloc_found = false; | |||
840 | for (unsigned j = 0, e = Relocs.size(); j != e; ++j) { | |||
841 | if (Relocs[i].first == i) { | |||
842 | symbol_iterator RelocSym = Relocs[j].second; | |||
843 | StringRef SymName; | |||
844 | RelocSym->getName(SymName); | |||
845 | outs() << "external relocation entry for symbol:" << SymName << "\n"; | |||
846 | reloc_found = true; | |||
847 | } | |||
848 | } | |||
849 | if (reloc_found == true) | |||
850 | continue; | |||
851 | ||||
852 | // For local references see what the section the literal pointer points to. | |||
853 | bool found = false; | |||
854 | for (unsigned SectIdx = 0; SectIdx != LiteralSections.size(); SectIdx++) { | |||
855 | uint64_t SectAddress = LiteralSections[SectIdx].getAddress(); | |||
856 | uint64_t SectSize = LiteralSections[SectIdx].getSize(); | |||
857 | if (lp >= SectAddress && lp < SectAddress + SectSize) { | |||
858 | found = true; | |||
859 | ||||
860 | StringRef SectName; | |||
861 | LiteralSections[SectIdx].getName(SectName); | |||
862 | DataRefImpl Ref = LiteralSections[SectIdx].getRawDataRefImpl(); | |||
863 | StringRef SegmentName = O->getSectionFinalSegmentName(Ref); | |||
864 | outs() << SegmentName << ":" << SectName << ":"; | |||
865 | ||||
866 | uint32_t section_type; | |||
867 | if (O->is64Bit()) { | |||
868 | const MachO::section_64 Sec = O->getSection64(Ref); | |||
869 | section_type = Sec.flags & MachO::SECTION_TYPE; | |||
870 | } else { | |||
871 | const MachO::section Sec = O->getSection(Ref); | |||
872 | section_type = Sec.flags & MachO::SECTION_TYPE; | |||
873 | } | |||
874 | ||||
875 | StringRef BytesStr; | |||
876 | LiteralSections[SectIdx].getContents(BytesStr); | |||
877 | const char *Contents = reinterpret_cast<const char *>(BytesStr.data()); | |||
878 | ||||
879 | switch (section_type) { | |||
880 | case MachO::S_CSTRING_LITERALS: | |||
881 | for (uint64_t i = lp - SectAddress; | |||
882 | i < SectSize && Contents[i] != '\0'; i++) { | |||
883 | DumpCstringChar(Contents[i]); | |||
884 | } | |||
885 | outs() << "\n"; | |||
886 | break; | |||
887 | case MachO::S_4BYTE_LITERALS: | |||
888 | float f; | |||
889 | memcpy(&f, Contents + (lp - SectAddress), sizeof(float)); | |||
890 | uint32_t l; | |||
891 | memcpy(&l, Contents + (lp - SectAddress), sizeof(uint32_t)); | |||
892 | if (O->isLittleEndian() != sys::IsLittleEndianHost) { | |||
893 | sys::swapByteOrder(f); | |||
894 | sys::swapByteOrder(l); | |||
895 | } | |||
896 | DumpLiteral4(l, f); | |||
897 | break; | |||
898 | case MachO::S_8BYTE_LITERALS: { | |||
899 | double d; | |||
900 | memcpy(&d, Contents + (lp - SectAddress), sizeof(double)); | |||
901 | uint32_t l0, l1; | |||
902 | memcpy(&l0, Contents + (lp - SectAddress), sizeof(uint32_t)); | |||
903 | memcpy(&l1, Contents + (lp - SectAddress) + sizeof(uint32_t), | |||
904 | sizeof(uint32_t)); | |||
905 | if (O->isLittleEndian() != sys::IsLittleEndianHost) { | |||
906 | sys::swapByteOrder(f); | |||
907 | sys::swapByteOrder(l0); | |||
908 | sys::swapByteOrder(l1); | |||
909 | } | |||
910 | DumpLiteral8(O, l0, l1, d); | |||
911 | break; | |||
912 | } | |||
913 | case MachO::S_16BYTE_LITERALS: { | |||
914 | uint32_t l0, l1, l2, l3; | |||
915 | memcpy(&l0, Contents + (lp - SectAddress), sizeof(uint32_t)); | |||
916 | memcpy(&l1, Contents + (lp - SectAddress) + sizeof(uint32_t), | |||
917 | sizeof(uint32_t)); | |||
918 | memcpy(&l2, Contents + (lp - SectAddress) + 2 * sizeof(uint32_t), | |||
919 | sizeof(uint32_t)); | |||
920 | memcpy(&l3, Contents + (lp - SectAddress) + 3 * sizeof(uint32_t), | |||
921 | sizeof(uint32_t)); | |||
922 | if (O->isLittleEndian() != sys::IsLittleEndianHost) { | |||
923 | sys::swapByteOrder(l0); | |||
924 | sys::swapByteOrder(l1); | |||
925 | sys::swapByteOrder(l2); | |||
926 | sys::swapByteOrder(l3); | |||
927 | } | |||
928 | DumpLiteral16(l0, l1, l2, l3); | |||
929 | break; | |||
930 | } | |||
931 | } | |||
932 | } | |||
933 | } | |||
934 | if (found == false) | |||
935 | outs() << format("0x%" PRIx64"l" "x", lp) << " (not in a literal section)\n"; | |||
936 | } | |||
937 | } | |||
938 | ||||
939 | static void DumpInitTermPointerSection(MachOObjectFile *O, const char *sect, | |||
940 | uint32_t sect_size, uint64_t sect_addr, | |||
941 | SymbolAddressMap *AddrMap, | |||
942 | bool verbose) { | |||
943 | uint32_t stride; | |||
944 | if (O->is64Bit()) | |||
945 | stride = sizeof(uint64_t); | |||
946 | else | |||
947 | stride = sizeof(uint32_t); | |||
948 | for (uint32_t i = 0; i < sect_size; i += stride) { | |||
949 | const char *SymbolName = nullptr; | |||
950 | if (O->is64Bit()) { | |||
951 | outs() << format("0x%016" PRIx64"l" "x", sect_addr + i * stride) << " "; | |||
952 | uint64_t pointer_value; | |||
953 | memcpy(&pointer_value, sect + i, stride); | |||
954 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
955 | sys::swapByteOrder(pointer_value); | |||
956 | outs() << format("0x%016" PRIx64"l" "x", pointer_value); | |||
957 | if (verbose) | |||
958 | SymbolName = GuessSymbolName(pointer_value, AddrMap); | |||
959 | } else { | |||
960 | outs() << format("0x%08" PRIx64"l" "x", sect_addr + i * stride) << " "; | |||
961 | uint32_t pointer_value; | |||
962 | memcpy(&pointer_value, sect + i, stride); | |||
963 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
964 | sys::swapByteOrder(pointer_value); | |||
965 | outs() << format("0x%08" PRIx32"x", pointer_value); | |||
966 | if (verbose) | |||
967 | SymbolName = GuessSymbolName(pointer_value, AddrMap); | |||
968 | } | |||
969 | if (SymbolName) | |||
970 | outs() << " " << SymbolName; | |||
971 | outs() << "\n"; | |||
972 | } | |||
973 | } | |||
974 | ||||
975 | static void DumpRawSectionContents(MachOObjectFile *O, const char *sect, | |||
976 | uint32_t size, uint64_t addr) { | |||
977 | uint32_t cputype = O->getHeader().cputype; | |||
978 | if (cputype == MachO::CPU_TYPE_I386 || cputype == MachO::CPU_TYPE_X86_64) { | |||
979 | uint32_t j; | |||
980 | for (uint32_t i = 0; i < size; i += j, addr += j) { | |||
981 | if (O->is64Bit()) | |||
982 | outs() << format("%016" PRIx64"l" "x", addr) << "\t"; | |||
983 | else | |||
984 | outs() << format("%08" PRIx64"l" "x", addr) << "\t"; | |||
985 | for (j = 0; j < 16 && i + j < size; j++) { | |||
986 | uint8_t byte_word = *(sect + i + j); | |||
987 | outs() << format("%02" PRIx32"x", (uint32_t)byte_word) << " "; | |||
988 | } | |||
989 | outs() << "\n"; | |||
990 | } | |||
991 | } else { | |||
992 | uint32_t j; | |||
993 | for (uint32_t i = 0; i < size; i += j, addr += j) { | |||
994 | if (O->is64Bit()) | |||
995 | outs() << format("%016" PRIx64"l" "x", addr) << "\t"; | |||
996 | else | |||
997 | outs() << format("%08" PRIx64"l" "x", sect) << "\t"; | |||
998 | for (j = 0; j < 4 * sizeof(int32_t) && i + j < size; | |||
999 | j += sizeof(int32_t)) { | |||
1000 | if (i + j + sizeof(int32_t) < size) { | |||
1001 | uint32_t long_word; | |||
1002 | memcpy(&long_word, sect + i + j, sizeof(int32_t)); | |||
1003 | if (O->isLittleEndian() != sys::IsLittleEndianHost) | |||
1004 | sys::swapByteOrder(long_word); | |||
1005 | outs() << format("%08" PRIx32"x", long_word) << " "; | |||
1006 | } else { | |||
1007 | for (uint32_t k = 0; i + j + k < size; k++) { | |||
1008 | uint8_t byte_word = *(sect + i + j); | |||
1009 | outs() << format("%02" PRIx32"x", (uint32_t)byte_word) << " "; | |||
1010 | } | |||
1011 | } | |||
1012 | } | |||
1013 | outs() << "\n"; | |||
1014 | } | |||
1015 | } | |||
1016 | } | |||
1017 | ||||
1018 | static void DisassembleMachO(StringRef Filename, MachOObjectFile *MachOOF, | |||
1019 | StringRef DisSegName, StringRef DisSectName); | |||
1020 | ||||
1021 | static void DumpSectionContents(StringRef Filename, MachOObjectFile *O, | |||
1022 | bool verbose) { | |||
1023 | SymbolAddressMap AddrMap; | |||
1024 | if (verbose) | |||
1025 | CreateSymbolAddressMap(O, &AddrMap); | |||
1026 | ||||
1027 | for (unsigned i = 0; i < DumpSections.size(); ++i) { | |||
1028 | StringRef DumpSection = DumpSections[i]; | |||
1029 | std::pair<StringRef, StringRef> DumpSegSectName; | |||
1030 | DumpSegSectName = DumpSection.split(','); | |||
1031 | StringRef DumpSegName, DumpSectName; | |||
1032 | if (DumpSegSectName.second.size()) { | |||
1033 | DumpSegName = DumpSegSectName.first; | |||
1034 | DumpSectName = DumpSegSectName.second; | |||
1035 | } else { | |||
1036 | DumpSegName = ""; | |||
1037 | DumpSectName = DumpSegSectName.first; | |||
1038 | } | |||
1039 | for (const SectionRef &Section : O->sections()) { | |||
1040 | StringRef SectName; | |||
1041 | Section.getName(SectName); | |||
1042 | DataRefImpl Ref = Section.getRawDataRefImpl(); | |||
1043 | StringRef SegName = O->getSectionFinalSegmentName(Ref); | |||
1044 | if ((DumpSegName.empty() || SegName == DumpSegName) && | |||
1045 | (SectName == DumpSectName)) { | |||
1046 | outs() << "Contents of (" << SegName << "," << SectName | |||
1047 | << ") section\n"; | |||
1048 | uint32_t section_flags; | |||
1049 | if (O->is64Bit()) { | |||
1050 | const MachO::section_64 Sec = O->getSection64(Ref); | |||
1051 | section_flags = Sec.flags; | |||
1052 | ||||
1053 | } else { | |||
1054 | const MachO::section Sec = O->getSection(Ref); | |||
1055 | section_flags = Sec.flags; | |||
1056 | } | |||
1057 | uint32_t section_type = section_flags & MachO::SECTION_TYPE; | |||
1058 | ||||
1059 | StringRef BytesStr; | |||
1060 | Section.getContents(BytesStr); | |||
1061 | const char *sect = reinterpret_cast<const char *>(BytesStr.data()); | |||
1062 | uint32_t sect_size = BytesStr.size(); | |||
1063 | uint64_t sect_addr = Section.getAddress(); | |||
1064 | ||||
1065 | if (verbose) { | |||
1066 | if ((section_flags & MachO::S_ATTR_PURE_INSTRUCTIONS) || | |||
1067 | (section_flags & MachO::S_ATTR_SOME_INSTRUCTIONS)) { | |||
1068 | DisassembleMachO(Filename, O, SegName, SectName); | |||
1069 | continue; | |||
1070 | } | |||
1071 | if (SegName == "__TEXT" && SectName == "__info_plist") { | |||
1072 | outs() << sect; | |||
1073 | continue; | |||
1074 | } | |||
1075 | switch (section_type) { | |||
1076 | case MachO::S_REGULAR: | |||
1077 | DumpRawSectionContents(O, sect, sect_size, sect_addr); | |||
1078 | break; | |||
1079 | case MachO::S_ZEROFILL: | |||
1080 | outs() << "zerofill section and has no contents in the file\n"; | |||
1081 | break; | |||
1082 | case MachO::S_CSTRING_LITERALS: | |||
1083 | DumpCstringSection(O, sect, sect_size, sect_addr, !NoLeadingAddr); | |||
1084 | break; | |||
1085 | case MachO::S_4BYTE_LITERALS: | |||
1086 | DumpLiteral4Section(O, sect, sect_size, sect_addr, !NoLeadingAddr); | |||
1087 | break; | |||
1088 | case MachO::S_8BYTE_LITERALS: | |||
1089 | DumpLiteral8Section(O, sect, sect_size, sect_addr, !NoLeadingAddr); | |||
1090 | break; | |||
1091 | case MachO::S_16BYTE_LITERALS: | |||
1092 | DumpLiteral16Section(O, sect, sect_size, sect_addr, !NoLeadingAddr); | |||
1093 | break; | |||
1094 | case MachO::S_LITERAL_POINTERS: | |||
1095 | DumpLiteralPointerSection(O, Section, sect, sect_size, sect_addr, | |||
1096 | !NoLeadingAddr); | |||
1097 | break; | |||
1098 | case MachO::S_MOD_INIT_FUNC_POINTERS: | |||
1099 | case MachO::S_MOD_TERM_FUNC_POINTERS: | |||
1100 | DumpInitTermPointerSection(O, sect, sect_size, sect_addr, &AddrMap, | |||
1101 | verbose); | |||
1102 | break; | |||
1103 | default: | |||
1104 | outs() << "Unknown section type (" | |||
1105 | << format("0x%08" PRIx32"x", section_type) << ")\n"; | |||
1106 | DumpRawSectionContents(O, sect, sect_size, sect_addr); | |||
1107 | break; | |||
1108 | } | |||
1109 | } else { | |||
1110 | if (section_type == MachO::S_ZEROFILL) | |||
1111 | outs() << "zerofill section and has no contents in the file\n"; | |||
1112 | else | |||
1113 | DumpRawSectionContents(O, sect, sect_size, sect_addr); | |||
1114 | } | |||
1115 | } | |||
1116 | } | |||
1117 | } | |||
1118 | } | |||
1119 | ||||
1120 | static void DumpInfoPlistSectionContents(StringRef Filename, | |||
1121 | MachOObjectFile *O) { | |||
1122 | for (const SectionRef &Section : O->sections()) { | |||
1123 | StringRef SectName; | |||
1124 | Section.getName(SectName); | |||
1125 | DataRefImpl Ref = Section.getRawDataRefImpl(); | |||
1126 | StringRef SegName = O->getSectionFinalSegmentName(Ref); | |||
1127 | if (SegName == "__TEXT" && SectName == "__info_plist") { | |||
1128 | outs() << "Contents of (" << SegName << "," << SectName << ") section\n"; | |||
1129 | StringRef BytesStr; | |||
1130 | Section.getContents(BytesStr); | |||
1131 | const char *sect = reinterpret_cast<const char *>(BytesStr.data()); | |||
1132 | outs() << sect; | |||
1133 | return; | |||
1134 | } | |||
1135 | } | |||
1136 | } | |||
1137 | ||||
1138 | // checkMachOAndArchFlags() checks to see if the ObjectFile is a Mach-O file | |||
1139 | // and if it is and there is a list of architecture flags is specified then | |||
1140 | // check to make sure this Mach-O file is one of those architectures or all | |||
1141 | // architectures were specified. If not then an error is generated and this | |||
1142 | // routine returns false. Else it returns true. | |||
1143 | static bool checkMachOAndArchFlags(ObjectFile *O, StringRef Filename) { | |||
1144 | if (isa<MachOObjectFile>(O) && !ArchAll && ArchFlags.size() != 0) { | |||
1145 | MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(O); | |||
1146 | bool ArchFound = false; | |||
1147 | MachO::mach_header H; | |||
1148 | MachO::mach_header_64 H_64; | |||
1149 | Triple T; | |||
1150 | if (MachO->is64Bit()) { | |||
1151 | H_64 = MachO->MachOObjectFile::getHeader64(); | |||
1152 | T = MachOObjectFile::getArch(H_64.cputype, H_64.cpusubtype); | |||
1153 | } else { | |||
1154 | H = MachO->MachOObjectFile::getHeader(); | |||
1155 | T = MachOObjectFile::getArch(H.cputype, H.cpusubtype); | |||
1156 | } | |||
1157 | unsigned i; | |||
1158 | for (i = 0; i < ArchFlags.size(); ++i) { | |||
1159 | if (ArchFlags[i] == T.getArchName()) | |||
1160 | ArchFound = true; | |||
1161 | break; | |||
1162 | } | |||
1163 | if (!ArchFound) { | |||
1164 | errs() << "llvm-objdump: file: " + Filename + " does not contain " | |||
1165 | << "architecture: " + ArchFlags[i] + "\n"; | |||
1166 | return false; | |||
1167 | } | |||
1168 | } | |||
1169 | return true; | |||
1170 | } | |||
1171 | ||||
1172 | // ProcessMachO() is passed a single opened Mach-O file, which may be an | |||
1173 | // archive member and or in a slice of a universal file. It prints the | |||
1174 | // the file name and header info and then processes it according to the | |||
1175 | // command line options. | |||
1176 | static void ProcessMachO(StringRef Filename, MachOObjectFile *MachOOF, | |||
1177 | StringRef ArchiveMemberName = StringRef(), | |||
1178 | StringRef ArchitectureName = StringRef()) { | |||
1179 | // If we are doing some processing here on the Mach-O file print the header | |||
1180 | // info. And don't print it otherwise like in the case of printing the | |||
1181 | // UniversalHeaders or ArchiveHeaders. | |||
1182 | if (Disassemble || PrivateHeaders || ExportsTrie || Rebase || Bind || | |||
1183 | LazyBind || WeakBind || IndirectSymbols || DataInCode || LinkOptHints || | |||
1184 | DylibsUsed || DylibId || DumpSections.size() != 0) { | |||
1185 | outs() << Filename; | |||
1186 | if (!ArchiveMemberName.empty()) | |||
1187 | outs() << '(' << ArchiveMemberName << ')'; | |||
1188 | if (!ArchitectureName.empty()) | |||
1189 | outs() << " (architecture " << ArchitectureName << ")"; | |||
1190 | outs() << ":\n"; | |||
1191 | } | |||
1192 | ||||
1193 | if (Disassemble) | |||
1194 | DisassembleMachO(Filename, MachOOF, "__TEXT", "__text"); | |||
1195 | if (IndirectSymbols) | |||
1196 | PrintIndirectSymbols(MachOOF, !NonVerbose); | |||
1197 | if (DataInCode) | |||
1198 | PrintDataInCodeTable(MachOOF, !NonVerbose); | |||
1199 | if (LinkOptHints) | |||
1200 | PrintLinkOptHints(MachOOF); | |||
1201 | if (Relocations) | |||
1202 | PrintRelocations(MachOOF); | |||
1203 | if (SectionHeaders) | |||
1204 | PrintSectionHeaders(MachOOF); | |||
1205 | if (SectionContents) | |||
1206 | PrintSectionContents(MachOOF); | |||
1207 | if (DumpSections.size() != 0) | |||
1208 | DumpSectionContents(Filename, MachOOF, !NonVerbose); | |||
1209 | if (InfoPlist) | |||
1210 | DumpInfoPlistSectionContents(Filename, MachOOF); | |||
1211 | if (DylibsUsed) | |||
1212 | PrintDylibs(MachOOF, false); | |||
1213 | if (DylibId) | |||
1214 | PrintDylibs(MachOOF, true); | |||
1215 | if (SymbolTable) | |||
1216 | PrintSymbolTable(MachOOF); | |||
1217 | if (UnwindInfo) | |||
1218 | printMachOUnwindInfo(MachOOF); | |||
1219 | if (PrivateHeaders) | |||
1220 | printMachOFileHeader(MachOOF); | |||
1221 | if (ExportsTrie) | |||
1222 | printExportsTrie(MachOOF); | |||
1223 | if (Rebase) | |||
1224 | printRebaseTable(MachOOF); | |||
1225 | if (Bind) | |||
1226 | printBindTable(MachOOF); | |||
1227 | if (LazyBind) | |||
1228 | printLazyBindTable(MachOOF); | |||
1229 | if (WeakBind) | |||
1230 | printWeakBindTable(MachOOF); | |||
1231 | } | |||
1232 | ||||
1233 | // printUnknownCPUType() helps print_fat_headers for unknown CPU's. | |||
1234 | static void printUnknownCPUType(uint32_t cputype, uint32_t cpusubtype) { | |||
1235 | outs() << " cputype (" << cputype << ")\n"; | |||
1236 | outs() << " cpusubtype (" << cpusubtype << ")\n"; | |||
1237 | } | |||
1238 | ||||
1239 | // printCPUType() helps print_fat_headers by printing the cputype and | |||
1240 | // pusubtype (symbolically for the one's it knows about). | |||
1241 | static void printCPUType(uint32_t cputype, uint32_t cpusubtype) { | |||
1242 | switch (cputype) { | |||
1243 | case MachO::CPU_TYPE_I386: | |||
1244 | switch (cpusubtype) { | |||
1245 | case MachO::CPU_SUBTYPE_I386_ALL: | |||
1246 | outs() << " cputype CPU_TYPE_I386\n"; | |||
1247 | outs() << " cpusubtype CPU_SUBTYPE_I386_ALL\n"; | |||
1248 | break; | |||
1249 | default: | |||
1250 | printUnknownCPUType(cputype, cpusubtype); | |||
1251 | break; | |||
1252 | } | |||
1253 | break; | |||
1254 | case MachO::CPU_TYPE_X86_64: | |||
1255 | switch (cpusubtype) { | |||
1256 | case MachO::CPU_SUBTYPE_X86_64_ALL: | |||
1257 | outs() << " cputype CPU_TYPE_X86_64\n"; | |||
1258 | outs() << " cpusubtype CPU_SUBTYPE_X86_64_ALL\n"; | |||
1259 | break; | |||
1260 | case MachO::CPU_SUBTYPE_X86_64_H: | |||
1261 | outs() << " cputype CPU_TYPE_X86_64\n"; | |||
1262 | outs() << " cpusubtype CPU_SUBTYPE_X86_64_H\n"; | |||
1263 | break; | |||
1264 | default: | |||
1265 | printUnknownCPUType(cputype, cpusubtype); | |||
1266 | break; | |||
1267 | } | |||
1268 | break; | |||
1269 | case MachO::CPU_TYPE_ARM: | |||
1270 | switch (cpusubtype) { | |||
1271 | case MachO::CPU_SUBTYPE_ARM_ALL: | |||
1272 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1273 | outs() << " cpusubtype CPU_SUBTYPE_ARM_ALL\n"; | |||
1274 | break; | |||
1275 | case MachO::CPU_SUBTYPE_ARM_V4T: | |||
1276 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1277 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V4T\n"; | |||
1278 | break; | |||
1279 | case MachO::CPU_SUBTYPE_ARM_V5TEJ: | |||
1280 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1281 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V5TEJ\n"; | |||
1282 | break; | |||
1283 | case MachO::CPU_SUBTYPE_ARM_XSCALE: | |||
1284 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1285 | outs() << " cpusubtype CPU_SUBTYPE_ARM_XSCALE\n"; | |||
1286 | break; | |||
1287 | case MachO::CPU_SUBTYPE_ARM_V6: | |||
1288 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1289 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V6\n"; | |||
1290 | break; | |||
1291 | case MachO::CPU_SUBTYPE_ARM_V6M: | |||
1292 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1293 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V6M\n"; | |||
1294 | break; | |||
1295 | case MachO::CPU_SUBTYPE_ARM_V7: | |||
1296 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1297 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V7\n"; | |||
1298 | break; | |||
1299 | case MachO::CPU_SUBTYPE_ARM_V7EM: | |||
1300 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1301 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V7EM\n"; | |||
1302 | break; | |||
1303 | case MachO::CPU_SUBTYPE_ARM_V7K: | |||
1304 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1305 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V7K\n"; | |||
1306 | break; | |||
1307 | case MachO::CPU_SUBTYPE_ARM_V7M: | |||
1308 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1309 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V7M\n"; | |||
1310 | break; | |||
1311 | case MachO::CPU_SUBTYPE_ARM_V7S: | |||
1312 | outs() << " cputype CPU_TYPE_ARM\n"; | |||
1313 | outs() << " cpusubtype CPU_SUBTYPE_ARM_V7S\n"; | |||
1314 | break; | |||
1315 | default: | |||
1316 | printUnknownCPUType(cputype, cpusubtype); | |||
1317 | break; | |||
1318 | } | |||
1319 | break; | |||
1320 | case MachO::CPU_TYPE_ARM64: | |||
1321 | switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) { | |||
1322 | case MachO::CPU_SUBTYPE_ARM64_ALL: | |||
1323 | outs() << " cputype CPU_TYPE_ARM64\n"; | |||
1324 | outs() << " cpusubtype CPU_SUBTYPE_ARM64_ALL\n"; | |||
1325 | break; | |||
1326 | default: | |||
1327 | printUnknownCPUType(cputype, cpusubtype); | |||
1328 | break; | |||
1329 | } | |||
1330 | break; | |||
1331 | default: | |||
1332 | printUnknownCPUType(cputype, cpusubtype); | |||
1333 | break; | |||
1334 | } | |||
1335 | } | |||
1336 | ||||
1337 | static void printMachOUniversalHeaders(const object::MachOUniversalBinary *UB, | |||
1338 | bool verbose) { | |||
1339 | outs() << "Fat headers\n"; | |||
1340 | if (verbose) | |||
1341 | outs() << "fat_magic FAT_MAGIC\n"; | |||
1342 | else | |||
1343 | outs() << "fat_magic " << format("0x%" PRIx32"x", MachO::FAT_MAGIC) << "\n"; | |||
1344 | ||||
1345 | uint32_t nfat_arch = UB->getNumberOfObjects(); | |||
1346 | StringRef Buf = UB->getData(); | |||
1347 | uint64_t size = Buf.size(); | |||
1348 | uint64_t big_size = sizeof(struct MachO::fat_header) + | |||
1349 | nfat_arch * sizeof(struct MachO::fat_arch); | |||
1350 | outs() << "nfat_arch " << UB->getNumberOfObjects(); | |||
1351 | if (nfat_arch == 0) | |||
1352 | outs() << " (malformed, contains zero architecture types)\n"; | |||
1353 | else if (big_size > size) | |||
1354 | outs() << " (malformed, architectures past end of file)\n"; | |||
1355 | else | |||
1356 | outs() << "\n"; | |||
1357 | ||||
1358 | for (uint32_t i = 0; i < nfat_arch; ++i) { | |||
1359 | MachOUniversalBinary::ObjectForArch OFA(UB, i); | |||
1360 | uint32_t cputype = OFA.getCPUType(); | |||
1361 | uint32_t cpusubtype = OFA.getCPUSubType(); | |||
1362 | outs() << "architecture "; | |||
1363 | for (uint32_t j = 0; i != 0 && j <= i - 1; j++) { | |||
1364 | MachOUniversalBinary::ObjectForArch other_OFA(UB, j); | |||
1365 | uint32_t other_cputype = other_OFA.getCPUType(); | |||
1366 | uint32_t other_cpusubtype = other_OFA.getCPUSubType(); | |||
1367 | if (cputype != 0 && cpusubtype != 0 && cputype == other_cputype && | |||
1368 | (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) == | |||
1369 | (other_cpusubtype & ~MachO::CPU_SUBTYPE_MASK)) { | |||
1370 | outs() << "(illegal duplicate architecture) "; | |||
1371 | break; | |||
1372 | } | |||
1373 | } | |||
1374 | if (verbose) { | |||
1375 | outs() << OFA.getArchTypeName() << "\n"; | |||
1376 | printCPUType(cputype, cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
1377 | } else { | |||
1378 | outs() << i << "\n"; | |||
1379 | outs() << " cputype " << cputype << "\n"; | |||
1380 | outs() << " cpusubtype " << (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) | |||
1381 | << "\n"; | |||
1382 | } | |||
1383 | if (verbose && | |||
1384 | (cpusubtype & MachO::CPU_SUBTYPE_MASK) == MachO::CPU_SUBTYPE_LIB64) | |||
1385 | outs() << " capabilities CPU_SUBTYPE_LIB64\n"; | |||
1386 | else | |||
1387 | outs() << " capabilities " | |||
1388 | << format("0x%" PRIx32"x", | |||
1389 | (cpusubtype & MachO::CPU_SUBTYPE_MASK) >> 24) << "\n"; | |||
1390 | outs() << " offset " << OFA.getOffset(); | |||
1391 | if (OFA.getOffset() > size) | |||
1392 | outs() << " (past end of file)"; | |||
1393 | if (OFA.getOffset() % (1 << OFA.getAlign()) != 0) | |||
1394 | outs() << " (not aligned on it's alignment (2^" << OFA.getAlign() << ")"; | |||
1395 | outs() << "\n"; | |||
1396 | outs() << " size " << OFA.getSize(); | |||
1397 | big_size = OFA.getOffset() + OFA.getSize(); | |||
1398 | if (big_size > size) | |||
1399 | outs() << " (past end of file)"; | |||
1400 | outs() << "\n"; | |||
1401 | outs() << " align 2^" << OFA.getAlign() << " (" << (1 << OFA.getAlign()) | |||
1402 | << ")\n"; | |||
1403 | } | |||
1404 | } | |||
1405 | ||||
1406 | static void printArchiveChild(Archive::Child &C, bool verbose, | |||
1407 | bool print_offset) { | |||
1408 | if (print_offset) | |||
1409 | outs() << C.getChildOffset() << "\t"; | |||
1410 | sys::fs::perms Mode = C.getAccessMode(); | |||
1411 | if (verbose) { | |||
1412 | // FIXME: this first dash, "-", is for (Mode & S_IFMT) == S_IFREG. | |||
1413 | // But there is nothing in sys::fs::perms for S_IFMT or S_IFREG. | |||
1414 | outs() << "-"; | |||
1415 | if (Mode & sys::fs::owner_read) | |||
1416 | outs() << "r"; | |||
1417 | else | |||
1418 | outs() << "-"; | |||
1419 | if (Mode & sys::fs::owner_write) | |||
1420 | outs() << "w"; | |||
1421 | else | |||
1422 | outs() << "-"; | |||
1423 | if (Mode & sys::fs::owner_exe) | |||
1424 | outs() << "x"; | |||
1425 | else | |||
1426 | outs() << "-"; | |||
1427 | if (Mode & sys::fs::group_read) | |||
1428 | outs() << "r"; | |||
1429 | else | |||
1430 | outs() << "-"; | |||
1431 | if (Mode & sys::fs::group_write) | |||
1432 | outs() << "w"; | |||
1433 | else | |||
1434 | outs() << "-"; | |||
1435 | if (Mode & sys::fs::group_exe) | |||
1436 | outs() << "x"; | |||
1437 | else | |||
1438 | outs() << "-"; | |||
1439 | if (Mode & sys::fs::others_read) | |||
1440 | outs() << "r"; | |||
1441 | else | |||
1442 | outs() << "-"; | |||
1443 | if (Mode & sys::fs::others_write) | |||
1444 | outs() << "w"; | |||
1445 | else | |||
1446 | outs() << "-"; | |||
1447 | if (Mode & sys::fs::others_exe) | |||
1448 | outs() << "x"; | |||
1449 | else | |||
1450 | outs() << "-"; | |||
1451 | } else { | |||
1452 | outs() << format("0%o ", Mode); | |||
1453 | } | |||
1454 | ||||
1455 | unsigned UID = C.getUID(); | |||
1456 | outs() << format("%3d/", UID); | |||
1457 | unsigned GID = C.getGID(); | |||
1458 | outs() << format("%-3d ", GID); | |||
1459 | uint64_t Size = C.getRawSize(); | |||
1460 | outs() << format("%5" PRId64"l" "d", Size) << " "; | |||
1461 | ||||
1462 | StringRef RawLastModified = C.getRawLastModified(); | |||
1463 | if (verbose) { | |||
1464 | unsigned Seconds; | |||
1465 | if (RawLastModified.getAsInteger(10, Seconds)) | |||
1466 | outs() << "(date: \"%s\" contains non-decimal chars) " << RawLastModified; | |||
1467 | else { | |||
1468 | // Since cime(3) returns a 26 character string of the form: | |||
1469 | // "Sun Sep 16 01:03:52 1973\n\0" | |||
1470 | // just print 24 characters. | |||
1471 | time_t t = Seconds; | |||
1472 | outs() << format("%.24s ", ctime(&t)); | |||
1473 | } | |||
1474 | } else { | |||
1475 | outs() << RawLastModified << " "; | |||
1476 | } | |||
1477 | ||||
1478 | if (verbose) { | |||
1479 | ErrorOr<StringRef> NameOrErr = C.getName(); | |||
1480 | if (NameOrErr.getError()) { | |||
1481 | StringRef RawName = C.getRawName(); | |||
1482 | outs() << RawName << "\n"; | |||
1483 | } else { | |||
1484 | StringRef Name = NameOrErr.get(); | |||
1485 | outs() << Name << "\n"; | |||
1486 | } | |||
1487 | } else { | |||
1488 | StringRef RawName = C.getRawName(); | |||
1489 | outs() << RawName << "\n"; | |||
1490 | } | |||
1491 | } | |||
1492 | ||||
1493 | static void printArchiveHeaders(Archive *A, bool verbose, bool print_offset) { | |||
1494 | if (A->hasSymbolTable()) { | |||
1495 | Archive::child_iterator S = A->getSymbolTableChild(); | |||
1496 | Archive::Child C = *S; | |||
1497 | printArchiveChild(C, verbose, print_offset); | |||
1498 | } | |||
1499 | for (Archive::child_iterator I = A->child_begin(), E = A->child_end(); I != E; | |||
1500 | ++I) { | |||
1501 | Archive::Child C = *I; | |||
1502 | printArchiveChild(C, verbose, print_offset); | |||
1503 | } | |||
1504 | } | |||
1505 | ||||
1506 | // ParseInputMachO() parses the named Mach-O file in Filename and handles the | |||
1507 | // -arch flags selecting just those slices as specified by them and also parses | |||
1508 | // archive files. Then for each individual Mach-O file ProcessMachO() is | |||
1509 | // called to process the file based on the command line options. | |||
1510 | void llvm::ParseInputMachO(StringRef Filename) { | |||
1511 | // Check for -arch all and verifiy the -arch flags are valid. | |||
1512 | for (unsigned i = 0; i < ArchFlags.size(); ++i) { | |||
1513 | if (ArchFlags[i] == "all") { | |||
1514 | ArchAll = true; | |||
1515 | } else { | |||
1516 | if (!MachOObjectFile::isValidArch(ArchFlags[i])) { | |||
1517 | errs() << "llvm-objdump: Unknown architecture named '" + ArchFlags[i] + | |||
1518 | "'for the -arch option\n"; | |||
1519 | return; | |||
1520 | } | |||
1521 | } | |||
1522 | } | |||
1523 | ||||
1524 | // Attempt to open the binary. | |||
1525 | ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(Filename); | |||
1526 | if (std::error_code EC = BinaryOrErr.getError()) { | |||
1527 | errs() << "llvm-objdump: '" << Filename << "': " << EC.message() << ".\n"; | |||
1528 | return; | |||
1529 | } | |||
1530 | Binary &Bin = *BinaryOrErr.get().getBinary(); | |||
1531 | ||||
1532 | if (Archive *A = dyn_cast<Archive>(&Bin)) { | |||
1533 | outs() << "Archive : " << Filename << "\n"; | |||
1534 | if (ArchiveHeaders) | |||
1535 | printArchiveHeaders(A, true, false); | |||
1536 | for (Archive::child_iterator I = A->child_begin(), E = A->child_end(); | |||
1537 | I != E; ++I) { | |||
1538 | ErrorOr<std::unique_ptr<Binary>> ChildOrErr = I->getAsBinary(); | |||
1539 | if (ChildOrErr.getError()) | |||
1540 | continue; | |||
1541 | if (MachOObjectFile *O = dyn_cast<MachOObjectFile>(&*ChildOrErr.get())) { | |||
1542 | if (!checkMachOAndArchFlags(O, Filename)) | |||
1543 | return; | |||
1544 | ProcessMachO(Filename, O, O->getFileName()); | |||
1545 | } | |||
1546 | } | |||
1547 | return; | |||
1548 | } | |||
1549 | if (UniversalHeaders) { | |||
1550 | if (MachOUniversalBinary *UB = dyn_cast<MachOUniversalBinary>(&Bin)) | |||
1551 | printMachOUniversalHeaders(UB, !NonVerbose); | |||
1552 | } | |||
1553 | if (MachOUniversalBinary *UB = dyn_cast<MachOUniversalBinary>(&Bin)) { | |||
1554 | // If we have a list of architecture flags specified dump only those. | |||
1555 | if (!ArchAll && ArchFlags.size() != 0) { | |||
1556 | // Look for a slice in the universal binary that matches each ArchFlag. | |||
1557 | bool ArchFound; | |||
1558 | for (unsigned i = 0; i < ArchFlags.size(); ++i) { | |||
1559 | ArchFound = false; | |||
1560 | for (MachOUniversalBinary::object_iterator I = UB->begin_objects(), | |||
1561 | E = UB->end_objects(); | |||
1562 | I != E; ++I) { | |||
1563 | if (ArchFlags[i] == I->getArchTypeName()) { | |||
1564 | ArchFound = true; | |||
1565 | ErrorOr<std::unique_ptr<ObjectFile>> ObjOrErr = | |||
1566 | I->getAsObjectFile(); | |||
1567 | std::string ArchitectureName = ""; | |||
1568 | if (ArchFlags.size() > 1) | |||
1569 | ArchitectureName = I->getArchTypeName(); | |||
1570 | if (ObjOrErr) { | |||
1571 | ObjectFile &O = *ObjOrErr.get(); | |||
1572 | if (MachOObjectFile *MachOOF = dyn_cast<MachOObjectFile>(&O)) | |||
1573 | ProcessMachO(Filename, MachOOF, "", ArchitectureName); | |||
1574 | } else if (ErrorOr<std::unique_ptr<Archive>> AOrErr = | |||
1575 | I->getAsArchive()) { | |||
1576 | std::unique_ptr<Archive> &A = *AOrErr; | |||
1577 | outs() << "Archive : " << Filename; | |||
1578 | if (!ArchitectureName.empty()) | |||
1579 | outs() << " (architecture " << ArchitectureName << ")"; | |||
1580 | outs() << "\n"; | |||
1581 | if (ArchiveHeaders) | |||
1582 | printArchiveHeaders(A.get(), true, false); | |||
1583 | for (Archive::child_iterator AI = A->child_begin(), | |||
1584 | AE = A->child_end(); | |||
1585 | AI != AE; ++AI) { | |||
1586 | ErrorOr<std::unique_ptr<Binary>> ChildOrErr = AI->getAsBinary(); | |||
1587 | if (ChildOrErr.getError()) | |||
1588 | continue; | |||
1589 | if (MachOObjectFile *O = | |||
1590 | dyn_cast<MachOObjectFile>(&*ChildOrErr.get())) | |||
1591 | ProcessMachO(Filename, O, O->getFileName(), ArchitectureName); | |||
1592 | } | |||
1593 | } | |||
1594 | } | |||
1595 | } | |||
1596 | if (!ArchFound) { | |||
1597 | errs() << "llvm-objdump: file: " + Filename + " does not contain " | |||
1598 | << "architecture: " + ArchFlags[i] + "\n"; | |||
1599 | return; | |||
1600 | } | |||
1601 | } | |||
1602 | return; | |||
1603 | } | |||
1604 | // No architecture flags were specified so if this contains a slice that | |||
1605 | // matches the host architecture dump only that. | |||
1606 | if (!ArchAll) { | |||
1607 | for (MachOUniversalBinary::object_iterator I = UB->begin_objects(), | |||
1608 | E = UB->end_objects(); | |||
1609 | I != E; ++I) { | |||
1610 | if (MachOObjectFile::getHostArch().getArchName() == | |||
1611 | I->getArchTypeName()) { | |||
1612 | ErrorOr<std::unique_ptr<ObjectFile>> ObjOrErr = I->getAsObjectFile(); | |||
1613 | std::string ArchiveName; | |||
1614 | ArchiveName.clear(); | |||
1615 | if (ObjOrErr) { | |||
1616 | ObjectFile &O = *ObjOrErr.get(); | |||
1617 | if (MachOObjectFile *MachOOF = dyn_cast<MachOObjectFile>(&O)) | |||
1618 | ProcessMachO(Filename, MachOOF); | |||
1619 | } else if (ErrorOr<std::unique_ptr<Archive>> AOrErr = | |||
1620 | I->getAsArchive()) { | |||
1621 | std::unique_ptr<Archive> &A = *AOrErr; | |||
1622 | outs() << "Archive : " << Filename << "\n"; | |||
1623 | if (ArchiveHeaders) | |||
1624 | printArchiveHeaders(A.get(), true, false); | |||
1625 | for (Archive::child_iterator AI = A->child_begin(), | |||
1626 | AE = A->child_end(); | |||
1627 | AI != AE; ++AI) { | |||
1628 | ErrorOr<std::unique_ptr<Binary>> ChildOrErr = AI->getAsBinary(); | |||
1629 | if (ChildOrErr.getError()) | |||
1630 | continue; | |||
1631 | if (MachOObjectFile *O = | |||
1632 | dyn_cast<MachOObjectFile>(&*ChildOrErr.get())) | |||
1633 | ProcessMachO(Filename, O, O->getFileName()); | |||
1634 | } | |||
1635 | } | |||
1636 | return; | |||
1637 | } | |||
1638 | } | |||
1639 | } | |||
1640 | // Either all architectures have been specified or none have been specified | |||
1641 | // and this does not contain the host architecture so dump all the slices. | |||
1642 | bool moreThanOneArch = UB->getNumberOfObjects() > 1; | |||
1643 | for (MachOUniversalBinary::object_iterator I = UB->begin_objects(), | |||
1644 | E = UB->end_objects(); | |||
1645 | I != E; ++I) { | |||
1646 | ErrorOr<std::unique_ptr<ObjectFile>> ObjOrErr = I->getAsObjectFile(); | |||
1647 | std::string ArchitectureName = ""; | |||
1648 | if (moreThanOneArch) | |||
1649 | ArchitectureName = I->getArchTypeName(); | |||
1650 | if (ObjOrErr) { | |||
1651 | ObjectFile &Obj = *ObjOrErr.get(); | |||
1652 | if (MachOObjectFile *MachOOF = dyn_cast<MachOObjectFile>(&Obj)) | |||
1653 | ProcessMachO(Filename, MachOOF, "", ArchitectureName); | |||
1654 | } else if (ErrorOr<std::unique_ptr<Archive>> AOrErr = I->getAsArchive()) { | |||
1655 | std::unique_ptr<Archive> &A = *AOrErr; | |||
1656 | outs() << "Archive : " << Filename; | |||
1657 | if (!ArchitectureName.empty()) | |||
1658 | outs() << " (architecture " << ArchitectureName << ")"; | |||
1659 | outs() << "\n"; | |||
1660 | if (ArchiveHeaders) | |||
1661 | printArchiveHeaders(A.get(), true, false); | |||
1662 | for (Archive::child_iterator AI = A->child_begin(), AE = A->child_end(); | |||
1663 | AI != AE; ++AI) { | |||
1664 | ErrorOr<std::unique_ptr<Binary>> ChildOrErr = AI->getAsBinary(); | |||
1665 | if (ChildOrErr.getError()) | |||
1666 | continue; | |||
1667 | if (MachOObjectFile *O = | |||
1668 | dyn_cast<MachOObjectFile>(&*ChildOrErr.get())) { | |||
1669 | if (MachOObjectFile *MachOOF = dyn_cast<MachOObjectFile>(O)) | |||
1670 | ProcessMachO(Filename, MachOOF, MachOOF->getFileName(), | |||
1671 | ArchitectureName); | |||
1672 | } | |||
1673 | } | |||
1674 | } | |||
1675 | } | |||
1676 | return; | |||
1677 | } | |||
1678 | if (ObjectFile *O = dyn_cast<ObjectFile>(&Bin)) { | |||
1679 | if (!checkMachOAndArchFlags(O, Filename)) | |||
1680 | return; | |||
1681 | if (MachOObjectFile *MachOOF = dyn_cast<MachOObjectFile>(&*O)) { | |||
1682 | ProcessMachO(Filename, MachOOF); | |||
1683 | } else | |||
1684 | errs() << "llvm-objdump: '" << Filename << "': " | |||
1685 | << "Object is not a Mach-O file type.\n"; | |||
1686 | } else | |||
1687 | errs() << "llvm-objdump: '" << Filename << "': " | |||
1688 | << "Unrecognized file type.\n"; | |||
1689 | } | |||
1690 | ||||
1691 | typedef std::pair<uint64_t, const char *> BindInfoEntry; | |||
1692 | typedef std::vector<BindInfoEntry> BindTable; | |||
1693 | typedef BindTable::iterator bind_table_iterator; | |||
1694 | ||||
1695 | // The block of info used by the Symbolizer call backs. | |||
1696 | struct DisassembleInfo { | |||
1697 | bool verbose; | |||
1698 | MachOObjectFile *O; | |||
1699 | SectionRef S; | |||
1700 | SymbolAddressMap *AddrMap; | |||
1701 | std::vector<SectionRef> *Sections; | |||
1702 | const char *class_name; | |||
1703 | const char *selector_name; | |||
1704 | char *method; | |||
1705 | char *demangled_name; | |||
1706 | uint64_t adrp_addr; | |||
1707 | uint32_t adrp_inst; | |||
1708 | BindTable *bindtable; | |||
1709 | }; | |||
1710 | ||||
1711 | // SymbolizerGetOpInfo() is the operand information call back function. | |||
1712 | // This is called to get the symbolic information for operand(s) of an | |||
1713 | // instruction when it is being done. This routine does this from | |||
1714 | // the relocation information, symbol table, etc. That block of information | |||
1715 | // is a pointer to the struct DisassembleInfo that was passed when the | |||
1716 | // disassembler context was created and passed to back to here when | |||
1717 | // called back by the disassembler for instruction operands that could have | |||
1718 | // relocation information. The address of the instruction containing operand is | |||
1719 | // at the Pc parameter. The immediate value the operand has is passed in | |||
1720 | // op_info->Value and is at Offset past the start of the instruction and has a | |||
1721 | // byte Size of 1, 2 or 4. The symbolc information is returned in TagBuf is the | |||
1722 | // LLVMOpInfo1 struct defined in the header "llvm-c/Disassembler.h" as symbol | |||
1723 | // names and addends of the symbolic expression to add for the operand. The | |||
1724 | // value of TagType is currently 1 (for the LLVMOpInfo1 struct). If symbolic | |||
1725 | // information is returned then this function returns 1 else it returns 0. | |||
1726 | static int SymbolizerGetOpInfo(void *DisInfo, uint64_t Pc, uint64_t Offset, | |||
1727 | uint64_t Size, int TagType, void *TagBuf) { | |||
1728 | struct DisassembleInfo *info = (struct DisassembleInfo *)DisInfo; | |||
1729 | struct LLVMOpInfo1 *op_info = (struct LLVMOpInfo1 *)TagBuf; | |||
1730 | uint64_t value = op_info->Value; | |||
1731 | ||||
1732 | // Make sure all fields returned are zero if we don't set them. | |||
1733 | memset((void *)op_info, '\0', sizeof(struct LLVMOpInfo1)); | |||
1734 | op_info->Value = value; | |||
1735 | ||||
1736 | // If the TagType is not the value 1 which it code knows about or if no | |||
1737 | // verbose symbolic information is wanted then just return 0, indicating no | |||
1738 | // information is being returned. | |||
1739 | if (TagType != 1 || info->verbose == false) | |||
| ||||
1740 | return 0; | |||
1741 | ||||
1742 | unsigned int Arch = info->O->getArch(); | |||
1743 | if (Arch == Triple::x86) { | |||
1744 | if (Size != 1 && Size != 2 && Size != 4 && Size != 0) | |||
1745 | return 0; | |||
1746 | // First search the section's relocation entries (if any) for an entry | |||
1747 | // for this section offset. | |||
1748 | uint32_t sect_addr = info->S.getAddress(); | |||
1749 | uint32_t sect_offset = (Pc + Offset) - sect_addr; | |||
1750 | bool reloc_found = false; | |||
1751 | DataRefImpl Rel; | |||
1752 | MachO::any_relocation_info RE; | |||
1753 | bool isExtern = false; | |||
1754 | SymbolRef Symbol; | |||
1755 | bool r_scattered = false; | |||
1756 | uint32_t r_value, pair_r_value, r_type; | |||
1757 | for (const RelocationRef &Reloc : info->S.relocations()) { | |||
1758 | uint64_t RelocOffset; | |||
1759 | Reloc.getOffset(RelocOffset); | |||
1760 | if (RelocOffset == sect_offset) { | |||
1761 | Rel = Reloc.getRawDataRefImpl(); | |||
1762 | RE = info->O->getRelocation(Rel); | |||
1763 | r_type = info->O->getAnyRelocationType(RE); | |||
1764 | r_scattered = info->O->isRelocationScattered(RE); | |||
1765 | if (r_scattered) { | |||
1766 | r_value = info->O->getScatteredRelocationValue(RE); | |||
1767 | if (r_type == MachO::GENERIC_RELOC_SECTDIFF || | |||
1768 | r_type == MachO::GENERIC_RELOC_LOCAL_SECTDIFF) { | |||
1769 | DataRefImpl RelNext = Rel; | |||
1770 | info->O->moveRelocationNext(RelNext); | |||
1771 | MachO::any_relocation_info RENext; | |||
1772 | RENext = info->O->getRelocation(RelNext); | |||
1773 | if (info->O->isRelocationScattered(RENext)) | |||
1774 | pair_r_value = info->O->getScatteredRelocationValue(RENext); | |||
1775 | else | |||
1776 | return 0; | |||
1777 | } | |||
1778 | } else { | |||
1779 | isExtern = info->O->getPlainRelocationExternal(RE); | |||
1780 | if (isExtern) { | |||
1781 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
1782 | Symbol = *RelocSym; | |||
1783 | } | |||
1784 | } | |||
1785 | reloc_found = true; | |||
1786 | break; | |||
1787 | } | |||
1788 | } | |||
1789 | if (reloc_found && isExtern) { | |||
1790 | StringRef SymName; | |||
1791 | Symbol.getName(SymName); | |||
1792 | const char *name = SymName.data(); | |||
1793 | op_info->AddSymbol.Present = 1; | |||
1794 | op_info->AddSymbol.Name = name; | |||
1795 | // For i386 extern relocation entries the value in the instruction is | |||
1796 | // the offset from the symbol, and value is already set in op_info->Value. | |||
1797 | return 1; | |||
1798 | } | |||
1799 | if (reloc_found && (r_type == MachO::GENERIC_RELOC_SECTDIFF || | |||
1800 | r_type == MachO::GENERIC_RELOC_LOCAL_SECTDIFF)) { | |||
1801 | const char *add = GuessSymbolName(r_value, info->AddrMap); | |||
1802 | const char *sub = GuessSymbolName(pair_r_value, info->AddrMap); | |||
1803 | uint32_t offset = value - (r_value - pair_r_value); | |||
1804 | op_info->AddSymbol.Present = 1; | |||
1805 | if (add != nullptr) | |||
1806 | op_info->AddSymbol.Name = add; | |||
1807 | else | |||
1808 | op_info->AddSymbol.Value = r_value; | |||
1809 | op_info->SubtractSymbol.Present = 1; | |||
1810 | if (sub != nullptr) | |||
1811 | op_info->SubtractSymbol.Name = sub; | |||
1812 | else | |||
1813 | op_info->SubtractSymbol.Value = pair_r_value; | |||
1814 | op_info->Value = offset; | |||
1815 | return 1; | |||
1816 | } | |||
1817 | // TODO: | |||
1818 | // Second search the external relocation entries of a fully linked image | |||
1819 | // (if any) for an entry that matches this segment offset. | |||
1820 | // uint32_t seg_offset = (Pc + Offset); | |||
1821 | return 0; | |||
1822 | } else if (Arch == Triple::x86_64) { | |||
1823 | if (Size != 1 && Size != 2 && Size != 4 && Size != 0) | |||
1824 | return 0; | |||
1825 | // First search the section's relocation entries (if any) for an entry | |||
1826 | // for this section offset. | |||
1827 | uint64_t sect_addr = info->S.getAddress(); | |||
1828 | uint64_t sect_offset = (Pc + Offset) - sect_addr; | |||
1829 | bool reloc_found = false; | |||
1830 | DataRefImpl Rel; | |||
1831 | MachO::any_relocation_info RE; | |||
1832 | bool isExtern = false; | |||
1833 | SymbolRef Symbol; | |||
1834 | for (const RelocationRef &Reloc : info->S.relocations()) { | |||
1835 | uint64_t RelocOffset; | |||
1836 | Reloc.getOffset(RelocOffset); | |||
1837 | if (RelocOffset == sect_offset) { | |||
1838 | Rel = Reloc.getRawDataRefImpl(); | |||
1839 | RE = info->O->getRelocation(Rel); | |||
1840 | // NOTE: Scattered relocations don't exist on x86_64. | |||
1841 | isExtern = info->O->getPlainRelocationExternal(RE); | |||
1842 | if (isExtern) { | |||
1843 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
1844 | Symbol = *RelocSym; | |||
1845 | } | |||
1846 | reloc_found = true; | |||
1847 | break; | |||
1848 | } | |||
1849 | } | |||
1850 | if (reloc_found && isExtern) { | |||
1851 | // The Value passed in will be adjusted by the Pc if the instruction | |||
1852 | // adds the Pc. But for x86_64 external relocation entries the Value | |||
1853 | // is the offset from the external symbol. | |||
1854 | if (info->O->getAnyRelocationPCRel(RE)) | |||
1855 | op_info->Value -= Pc + Offset + Size; | |||
1856 | StringRef SymName; | |||
1857 | Symbol.getName(SymName); | |||
1858 | const char *name = SymName.data(); | |||
1859 | unsigned Type = info->O->getAnyRelocationType(RE); | |||
1860 | if (Type == MachO::X86_64_RELOC_SUBTRACTOR) { | |||
1861 | DataRefImpl RelNext = Rel; | |||
1862 | info->O->moveRelocationNext(RelNext); | |||
1863 | MachO::any_relocation_info RENext = info->O->getRelocation(RelNext); | |||
1864 | unsigned TypeNext = info->O->getAnyRelocationType(RENext); | |||
1865 | bool isExternNext = info->O->getPlainRelocationExternal(RENext); | |||
1866 | unsigned SymbolNum = info->O->getPlainRelocationSymbolNum(RENext); | |||
1867 | if (TypeNext == MachO::X86_64_RELOC_UNSIGNED && isExternNext) { | |||
1868 | op_info->SubtractSymbol.Present = 1; | |||
1869 | op_info->SubtractSymbol.Name = name; | |||
1870 | symbol_iterator RelocSymNext = info->O->getSymbolByIndex(SymbolNum); | |||
1871 | Symbol = *RelocSymNext; | |||
1872 | StringRef SymNameNext; | |||
1873 | Symbol.getName(SymNameNext); | |||
1874 | name = SymNameNext.data(); | |||
1875 | } | |||
1876 | } | |||
1877 | // TODO: add the VariantKinds to op_info->VariantKind for relocation types | |||
1878 | // like: X86_64_RELOC_TLV, X86_64_RELOC_GOT_LOAD and X86_64_RELOC_GOT. | |||
1879 | op_info->AddSymbol.Present = 1; | |||
1880 | op_info->AddSymbol.Name = name; | |||
1881 | return 1; | |||
1882 | } | |||
1883 | // TODO: | |||
1884 | // Second search the external relocation entries of a fully linked image | |||
1885 | // (if any) for an entry that matches this segment offset. | |||
1886 | // uint64_t seg_offset = (Pc + Offset); | |||
1887 | return 0; | |||
1888 | } else if (Arch == Triple::arm) { | |||
1889 | if (Offset != 0 || (Size != 4 && Size != 2)) | |||
1890 | return 0; | |||
1891 | // First search the section's relocation entries (if any) for an entry | |||
1892 | // for this section offset. | |||
1893 | uint32_t sect_addr = info->S.getAddress(); | |||
1894 | uint32_t sect_offset = (Pc + Offset) - sect_addr; | |||
1895 | bool reloc_found = false; | |||
1896 | DataRefImpl Rel; | |||
1897 | MachO::any_relocation_info RE; | |||
1898 | bool isExtern = false; | |||
1899 | SymbolRef Symbol; | |||
1900 | bool r_scattered = false; | |||
1901 | uint32_t r_value, pair_r_value, r_type, r_length, other_half; | |||
1902 | for (const RelocationRef &Reloc : info->S.relocations()) { | |||
1903 | uint64_t RelocOffset; | |||
1904 | Reloc.getOffset(RelocOffset); | |||
1905 | if (RelocOffset == sect_offset) { | |||
1906 | Rel = Reloc.getRawDataRefImpl(); | |||
1907 | RE = info->O->getRelocation(Rel); | |||
1908 | r_length = info->O->getAnyRelocationLength(RE); | |||
1909 | r_scattered = info->O->isRelocationScattered(RE); | |||
1910 | if (r_scattered) { | |||
1911 | r_value = info->O->getScatteredRelocationValue(RE); | |||
1912 | r_type = info->O->getScatteredRelocationType(RE); | |||
1913 | } else { | |||
1914 | r_type = info->O->getAnyRelocationType(RE); | |||
1915 | isExtern = info->O->getPlainRelocationExternal(RE); | |||
1916 | if (isExtern) { | |||
1917 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
1918 | Symbol = *RelocSym; | |||
1919 | } | |||
1920 | } | |||
1921 | if (r_type == MachO::ARM_RELOC_HALF || | |||
1922 | r_type == MachO::ARM_RELOC_SECTDIFF || | |||
1923 | r_type == MachO::ARM_RELOC_LOCAL_SECTDIFF || | |||
1924 | r_type == MachO::ARM_RELOC_HALF_SECTDIFF) { | |||
1925 | DataRefImpl RelNext = Rel; | |||
1926 | info->O->moveRelocationNext(RelNext); | |||
1927 | MachO::any_relocation_info RENext; | |||
1928 | RENext = info->O->getRelocation(RelNext); | |||
1929 | other_half = info->O->getAnyRelocationAddress(RENext) & 0xffff; | |||
1930 | if (info->O->isRelocationScattered(RENext)) | |||
1931 | pair_r_value = info->O->getScatteredRelocationValue(RENext); | |||
1932 | } | |||
1933 | reloc_found = true; | |||
1934 | break; | |||
1935 | } | |||
1936 | } | |||
1937 | if (reloc_found && isExtern) { | |||
1938 | StringRef SymName; | |||
1939 | Symbol.getName(SymName); | |||
1940 | const char *name = SymName.data(); | |||
1941 | op_info->AddSymbol.Present = 1; | |||
1942 | op_info->AddSymbol.Name = name; | |||
1943 | switch (r_type) { | |||
1944 | case MachO::ARM_RELOC_HALF: | |||
1945 | if ((r_length & 0x1) == 1) { | |||
1946 | op_info->Value = value << 16 | other_half; | |||
1947 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM_HI161; | |||
1948 | } else { | |||
1949 | op_info->Value = other_half << 16 | value; | |||
1950 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM_LO162; | |||
1951 | } | |||
1952 | break; | |||
1953 | default: | |||
1954 | break; | |||
1955 | } | |||
1956 | return 1; | |||
1957 | } | |||
1958 | // If we have a branch that is not an external relocation entry then | |||
1959 | // return 0 so the code in tryAddingSymbolicOperand() can use the | |||
1960 | // SymbolLookUp call back with the branch target address to look up the | |||
1961 | // symbol and possiblity add an annotation for a symbol stub. | |||
1962 | if (reloc_found && isExtern == 0 && (r_type == MachO::ARM_RELOC_BR24 || | |||
1963 | r_type == MachO::ARM_THUMB_RELOC_BR22)) | |||
1964 | return 0; | |||
1965 | ||||
1966 | uint32_t offset = 0; | |||
1967 | if (reloc_found) { | |||
1968 | if (r_type == MachO::ARM_RELOC_HALF || | |||
1969 | r_type == MachO::ARM_RELOC_HALF_SECTDIFF) { | |||
1970 | if ((r_length & 0x1) == 1) | |||
1971 | value = value << 16 | other_half; | |||
1972 | else | |||
1973 | value = other_half << 16 | value; | |||
1974 | } | |||
1975 | if (r_scattered && (r_type != MachO::ARM_RELOC_HALF && | |||
1976 | r_type != MachO::ARM_RELOC_HALF_SECTDIFF)) { | |||
1977 | offset = value - r_value; | |||
1978 | value = r_value; | |||
1979 | } | |||
1980 | } | |||
1981 | ||||
1982 | if (reloc_found && r_type == MachO::ARM_RELOC_HALF_SECTDIFF) { | |||
1983 | if ((r_length & 0x1) == 1) | |||
1984 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM_HI161; | |||
1985 | else | |||
1986 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM_LO162; | |||
1987 | const char *add = GuessSymbolName(r_value, info->AddrMap); | |||
| ||||
1988 | const char *sub = GuessSymbolName(pair_r_value, info->AddrMap); | |||
1989 | int32_t offset = value - (r_value - pair_r_value); | |||
1990 | op_info->AddSymbol.Present = 1; | |||
1991 | if (add != nullptr) | |||
1992 | op_info->AddSymbol.Name = add; | |||
1993 | else | |||
1994 | op_info->AddSymbol.Value = r_value; | |||
1995 | op_info->SubtractSymbol.Present = 1; | |||
1996 | if (sub != nullptr) | |||
1997 | op_info->SubtractSymbol.Name = sub; | |||
1998 | else | |||
1999 | op_info->SubtractSymbol.Value = pair_r_value; | |||
2000 | op_info->Value = offset; | |||
2001 | return 1; | |||
2002 | } | |||
2003 | ||||
2004 | if (reloc_found == false) | |||
2005 | return 0; | |||
2006 | ||||
2007 | op_info->AddSymbol.Present = 1; | |||
2008 | op_info->Value = offset; | |||
2009 | if (reloc_found) { | |||
2010 | if (r_type == MachO::ARM_RELOC_HALF) { | |||
2011 | if ((r_length & 0x1) == 1) | |||
2012 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM_HI161; | |||
2013 | else | |||
2014 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM_LO162; | |||
2015 | } | |||
2016 | } | |||
2017 | const char *add = GuessSymbolName(value, info->AddrMap); | |||
2018 | if (add != nullptr) { | |||
2019 | op_info->AddSymbol.Name = add; | |||
2020 | return 1; | |||
2021 | } | |||
2022 | op_info->AddSymbol.Value = value; | |||
2023 | return 1; | |||
2024 | } else if (Arch == Triple::aarch64) { | |||
2025 | if (Offset != 0 || Size != 4) | |||
2026 | return 0; | |||
2027 | // First search the section's relocation entries (if any) for an entry | |||
2028 | // for this section offset. | |||
2029 | uint64_t sect_addr = info->S.getAddress(); | |||
2030 | uint64_t sect_offset = (Pc + Offset) - sect_addr; | |||
2031 | bool reloc_found = false; | |||
2032 | DataRefImpl Rel; | |||
2033 | MachO::any_relocation_info RE; | |||
2034 | bool isExtern = false; | |||
2035 | SymbolRef Symbol; | |||
2036 | uint32_t r_type = 0; | |||
2037 | for (const RelocationRef &Reloc : info->S.relocations()) { | |||
2038 | uint64_t RelocOffset; | |||
2039 | Reloc.getOffset(RelocOffset); | |||
2040 | if (RelocOffset == sect_offset) { | |||
2041 | Rel = Reloc.getRawDataRefImpl(); | |||
2042 | RE = info->O->getRelocation(Rel); | |||
2043 | r_type = info->O->getAnyRelocationType(RE); | |||
2044 | if (r_type == MachO::ARM64_RELOC_ADDEND) { | |||
2045 | DataRefImpl RelNext = Rel; | |||
2046 | info->O->moveRelocationNext(RelNext); | |||
2047 | MachO::any_relocation_info RENext = info->O->getRelocation(RelNext); | |||
2048 | if (value == 0) { | |||
2049 | value = info->O->getPlainRelocationSymbolNum(RENext); | |||
2050 | op_info->Value = value; | |||
2051 | } | |||
2052 | } | |||
2053 | // NOTE: Scattered relocations don't exist on arm64. | |||
2054 | isExtern = info->O->getPlainRelocationExternal(RE); | |||
2055 | if (isExtern) { | |||
2056 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
2057 | Symbol = *RelocSym; | |||
2058 | } | |||
2059 | reloc_found = true; | |||
2060 | break; | |||
2061 | } | |||
2062 | } | |||
2063 | if (reloc_found && isExtern) { | |||
2064 | StringRef SymName; | |||
2065 | Symbol.getName(SymName); | |||
2066 | const char *name = SymName.data(); | |||
2067 | op_info->AddSymbol.Present = 1; | |||
2068 | op_info->AddSymbol.Name = name; | |||
2069 | ||||
2070 | switch (r_type) { | |||
2071 | case MachO::ARM64_RELOC_PAGE21: | |||
2072 | /* @page */ | |||
2073 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM64_PAGE1; | |||
2074 | break; | |||
2075 | case MachO::ARM64_RELOC_PAGEOFF12: | |||
2076 | /* @pageoff */ | |||
2077 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM64_PAGEOFF2; | |||
2078 | break; | |||
2079 | case MachO::ARM64_RELOC_GOT_LOAD_PAGE21: | |||
2080 | /* @gotpage */ | |||
2081 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM64_GOTPAGE3; | |||
2082 | break; | |||
2083 | case MachO::ARM64_RELOC_GOT_LOAD_PAGEOFF12: | |||
2084 | /* @gotpageoff */ | |||
2085 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM64_GOTPAGEOFF4; | |||
2086 | break; | |||
2087 | case MachO::ARM64_RELOC_TLVP_LOAD_PAGE21: | |||
2088 | /* @tvlppage is not implemented in llvm-mc */ | |||
2089 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM64_TLVP5; | |||
2090 | break; | |||
2091 | case MachO::ARM64_RELOC_TLVP_LOAD_PAGEOFF12: | |||
2092 | /* @tvlppageoff is not implemented in llvm-mc */ | |||
2093 | op_info->VariantKind = LLVMDisassembler_VariantKind_ARM64_TLVOFF6; | |||
2094 | break; | |||
2095 | default: | |||
2096 | case MachO::ARM64_RELOC_BRANCH26: | |||
2097 | op_info->VariantKind = LLVMDisassembler_VariantKind_None0; | |||
2098 | break; | |||
2099 | } | |||
2100 | return 1; | |||
2101 | } | |||
2102 | return 0; | |||
2103 | } else { | |||
2104 | return 0; | |||
2105 | } | |||
2106 | } | |||
2107 | ||||
2108 | // GuessCstringPointer is passed the address of what might be a pointer to a | |||
2109 | // literal string in a cstring section. If that address is in a cstring section | |||
2110 | // it returns a pointer to that string. Else it returns nullptr. | |||
2111 | static const char *GuessCstringPointer(uint64_t ReferenceValue, | |||
2112 | struct DisassembleInfo *info) { | |||
2113 | uint32_t LoadCommandCount = info->O->getHeader().ncmds; | |||
2114 | MachOObjectFile::LoadCommandInfo Load = info->O->getFirstLoadCommandInfo(); | |||
2115 | for (unsigned I = 0;; ++I) { | |||
2116 | if (Load.C.cmd == MachO::LC_SEGMENT_64) { | |||
2117 | MachO::segment_command_64 Seg = info->O->getSegment64LoadCommand(Load); | |||
2118 | for (unsigned J = 0; J < Seg.nsects; ++J) { | |||
2119 | MachO::section_64 Sec = info->O->getSection64(Load, J); | |||
2120 | uint32_t section_type = Sec.flags & MachO::SECTION_TYPE; | |||
2121 | if (section_type == MachO::S_CSTRING_LITERALS && | |||
2122 | ReferenceValue >= Sec.addr && | |||
2123 | ReferenceValue < Sec.addr + Sec.size) { | |||
2124 | uint64_t sect_offset = ReferenceValue - Sec.addr; | |||
2125 | uint64_t object_offset = Sec.offset + sect_offset; | |||
2126 | StringRef MachOContents = info->O->getData(); | |||
2127 | uint64_t object_size = MachOContents.size(); | |||
2128 | const char *object_addr = (const char *)MachOContents.data(); | |||
2129 | if (object_offset < object_size) { | |||
2130 | const char *name = object_addr + object_offset; | |||
2131 | return name; | |||
2132 | } else { | |||
2133 | return nullptr; | |||
2134 | } | |||
2135 | } | |||
2136 | } | |||
2137 | } else if (Load.C.cmd == MachO::LC_SEGMENT) { | |||
2138 | MachO::segment_command Seg = info->O->getSegmentLoadCommand(Load); | |||
2139 | for (unsigned J = 0; J < Seg.nsects; ++J) { | |||
2140 | MachO::section Sec = info->O->getSection(Load, J); | |||
2141 | uint32_t section_type = Sec.flags & MachO::SECTION_TYPE; | |||
2142 | if (section_type == MachO::S_CSTRING_LITERALS && | |||
2143 | ReferenceValue >= Sec.addr && | |||
2144 | ReferenceValue < Sec.addr + Sec.size) { | |||
2145 | uint64_t sect_offset = ReferenceValue - Sec.addr; | |||
2146 | uint64_t object_offset = Sec.offset + sect_offset; | |||
2147 | StringRef MachOContents = info->O->getData(); | |||
2148 | uint64_t object_size = MachOContents.size(); | |||
2149 | const char *object_addr = (const char *)MachOContents.data(); | |||
2150 | if (object_offset < object_size) { | |||
2151 | const char *name = object_addr + object_offset; | |||
2152 | return name; | |||
2153 | } else { | |||
2154 | return nullptr; | |||
2155 | } | |||
2156 | } | |||
2157 | } | |||
2158 | } | |||
2159 | if (I == LoadCommandCount - 1) | |||
2160 | break; | |||
2161 | else | |||
2162 | Load = info->O->getNextLoadCommandInfo(Load); | |||
2163 | } | |||
2164 | return nullptr; | |||
2165 | } | |||
2166 | ||||
2167 | // GuessIndirectSymbol returns the name of the indirect symbol for the | |||
2168 | // ReferenceValue passed in or nullptr. This is used when ReferenceValue maybe | |||
2169 | // an address of a symbol stub or a lazy or non-lazy pointer to associate the | |||
2170 | // symbol name being referenced by the stub or pointer. | |||
2171 | static const char *GuessIndirectSymbol(uint64_t ReferenceValue, | |||
2172 | struct DisassembleInfo *info) { | |||
2173 | uint32_t LoadCommandCount = info->O->getHeader().ncmds; | |||
2174 | MachOObjectFile::LoadCommandInfo Load = info->O->getFirstLoadCommandInfo(); | |||
2175 | MachO::dysymtab_command Dysymtab = info->O->getDysymtabLoadCommand(); | |||
2176 | MachO::symtab_command Symtab = info->O->getSymtabLoadCommand(); | |||
2177 | for (unsigned I = 0;; ++I) { | |||
2178 | if (Load.C.cmd == MachO::LC_SEGMENT_64) { | |||
2179 | MachO::segment_command_64 Seg = info->O->getSegment64LoadCommand(Load); | |||
2180 | for (unsigned J = 0; J < Seg.nsects; ++J) { | |||
2181 | MachO::section_64 Sec = info->O->getSection64(Load, J); | |||
2182 | uint32_t section_type = Sec.flags & MachO::SECTION_TYPE; | |||
2183 | if ((section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS || | |||
2184 | section_type == MachO::S_LAZY_SYMBOL_POINTERS || | |||
2185 | section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS || | |||
2186 | section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS || | |||
2187 | section_type == MachO::S_SYMBOL_STUBS) && | |||
2188 | ReferenceValue >= Sec.addr && | |||
2189 | ReferenceValue < Sec.addr + Sec.size) { | |||
2190 | uint32_t stride; | |||
2191 | if (section_type == MachO::S_SYMBOL_STUBS) | |||
2192 | stride = Sec.reserved2; | |||
2193 | else | |||
2194 | stride = 8; | |||
2195 | if (stride == 0) | |||
2196 | return nullptr; | |||
2197 | uint32_t index = Sec.reserved1 + (ReferenceValue - Sec.addr) / stride; | |||
2198 | if (index < Dysymtab.nindirectsyms) { | |||
2199 | uint32_t indirect_symbol = | |||
2200 | info->O->getIndirectSymbolTableEntry(Dysymtab, index); | |||
2201 | if (indirect_symbol < Symtab.nsyms) { | |||
2202 | symbol_iterator Sym = info->O->getSymbolByIndex(indirect_symbol); | |||
2203 | SymbolRef Symbol = *Sym; | |||
2204 | StringRef SymName; | |||
2205 | Symbol.getName(SymName); | |||
2206 | const char *name = SymName.data(); | |||
2207 | return name; | |||
2208 | } | |||
2209 | } | |||
2210 | } | |||
2211 | } | |||
2212 | } else if (Load.C.cmd == MachO::LC_SEGMENT) { | |||
2213 | MachO::segment_command Seg = info->O->getSegmentLoadCommand(Load); | |||
2214 | for (unsigned J = 0; J < Seg.nsects; ++J) { | |||
2215 | MachO::section Sec = info->O->getSection(Load, J); | |||
2216 | uint32_t section_type = Sec.flags & MachO::SECTION_TYPE; | |||
2217 | if ((section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS || | |||
2218 | section_type == MachO::S_LAZY_SYMBOL_POINTERS || | |||
2219 | section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS || | |||
2220 | section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS || | |||
2221 | section_type == MachO::S_SYMBOL_STUBS) && | |||
2222 | ReferenceValue >= Sec.addr && | |||
2223 | ReferenceValue < Sec.addr + Sec.size) { | |||
2224 | uint32_t stride; | |||
2225 | if (section_type == MachO::S_SYMBOL_STUBS) | |||
2226 | stride = Sec.reserved2; | |||
2227 | else | |||
2228 | stride = 4; | |||
2229 | if (stride == 0) | |||
2230 | return nullptr; | |||
2231 | uint32_t index = Sec.reserved1 + (ReferenceValue - Sec.addr) / stride; | |||
2232 | if (index < Dysymtab.nindirectsyms) { | |||
2233 | uint32_t indirect_symbol = | |||
2234 | info->O->getIndirectSymbolTableEntry(Dysymtab, index); | |||
2235 | if (indirect_symbol < Symtab.nsyms) { | |||
2236 | symbol_iterator Sym = info->O->getSymbolByIndex(indirect_symbol); | |||
2237 | SymbolRef Symbol = *Sym; | |||
2238 | StringRef SymName; | |||
2239 | Symbol.getName(SymName); | |||
2240 | const char *name = SymName.data(); | |||
2241 | return name; | |||
2242 | } | |||
2243 | } | |||
2244 | } | |||
2245 | } | |||
2246 | } | |||
2247 | if (I == LoadCommandCount - 1) | |||
2248 | break; | |||
2249 | else | |||
2250 | Load = info->O->getNextLoadCommandInfo(Load); | |||
2251 | } | |||
2252 | return nullptr; | |||
2253 | } | |||
2254 | ||||
2255 | // method_reference() is called passing it the ReferenceName that might be | |||
2256 | // a reference it to an Objective-C method call. If so then it allocates and | |||
2257 | // assembles a method call string with the values last seen and saved in | |||
2258 | // the DisassembleInfo's class_name and selector_name fields. This is saved | |||
2259 | // into the method field of the info and any previous string is free'ed. | |||
2260 | // Then the class_name field in the info is set to nullptr. The method call | |||
2261 | // string is set into ReferenceName and ReferenceType is set to | |||
2262 | // LLVMDisassembler_ReferenceType_Out_Objc_Message. If this not a method call | |||
2263 | // then both ReferenceType and ReferenceName are left unchanged. | |||
2264 | static void method_reference(struct DisassembleInfo *info, | |||
2265 | uint64_t *ReferenceType, | |||
2266 | const char **ReferenceName) { | |||
2267 | unsigned int Arch = info->O->getArch(); | |||
2268 | if (*ReferenceName != nullptr) { | |||
2269 | if (strcmp(*ReferenceName, "_objc_msgSend") == 0) { | |||
2270 | if (info->selector_name != nullptr) { | |||
2271 | if (info->method != nullptr) | |||
2272 | free(info->method); | |||
2273 | if (info->class_name != nullptr) { | |||
2274 | info->method = (char *)malloc(5 + strlen(info->class_name) + | |||
2275 | strlen(info->selector_name)); | |||
2276 | if (info->method != nullptr) { | |||
2277 | strcpy(info->method, "+["); | |||
2278 | strcat(info->method, info->class_name); | |||
2279 | strcat(info->method, " "); | |||
2280 | strcat(info->method, info->selector_name); | |||
2281 | strcat(info->method, "]"); | |||
2282 | *ReferenceName = info->method; | |||
2283 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message5; | |||
2284 | } | |||
2285 | } else { | |||
2286 | info->method = (char *)malloc(9 + strlen(info->selector_name)); | |||
2287 | if (info->method != nullptr) { | |||
2288 | if (Arch == Triple::x86_64) | |||
2289 | strcpy(info->method, "-[%rdi "); | |||
2290 | else if (Arch == Triple::aarch64) | |||
2291 | strcpy(info->method, "-[x0 "); | |||
2292 | else | |||
2293 | strcpy(info->method, "-[r? "); | |||
2294 | strcat(info->method, info->selector_name); | |||
2295 | strcat(info->method, "]"); | |||
2296 | *ReferenceName = info->method; | |||
2297 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message5; | |||
2298 | } | |||
2299 | } | |||
2300 | info->class_name = nullptr; | |||
2301 | } | |||
2302 | } else if (strcmp(*ReferenceName, "_objc_msgSendSuper2") == 0) { | |||
2303 | if (info->selector_name != nullptr) { | |||
2304 | if (info->method != nullptr) | |||
2305 | free(info->method); | |||
2306 | info->method = (char *)malloc(17 + strlen(info->selector_name)); | |||
2307 | if (info->method != nullptr) { | |||
2308 | if (Arch == Triple::x86_64) | |||
2309 | strcpy(info->method, "-[[%rdi super] "); | |||
2310 | else if (Arch == Triple::aarch64) | |||
2311 | strcpy(info->method, "-[[x0 super] "); | |||
2312 | else | |||
2313 | strcpy(info->method, "-[[r? super] "); | |||
2314 | strcat(info->method, info->selector_name); | |||
2315 | strcat(info->method, "]"); | |||
2316 | *ReferenceName = info->method; | |||
2317 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message5; | |||
2318 | } | |||
2319 | info->class_name = nullptr; | |||
2320 | } | |||
2321 | } | |||
2322 | } | |||
2323 | } | |||
2324 | ||||
2325 | // GuessPointerPointer() is passed the address of what might be a pointer to | |||
2326 | // a reference to an Objective-C class, selector, message ref or cfstring. | |||
2327 | // If so the value of the pointer is returned and one of the booleans are set | |||
2328 | // to true. If not zero is returned and all the booleans are set to false. | |||
2329 | static uint64_t GuessPointerPointer(uint64_t ReferenceValue, | |||
2330 | struct DisassembleInfo *info, | |||
2331 | bool &classref, bool &selref, bool &msgref, | |||
2332 | bool &cfstring) { | |||
2333 | classref = false; | |||
2334 | selref = false; | |||
2335 | msgref = false; | |||
2336 | cfstring = false; | |||
2337 | uint32_t LoadCommandCount = info->O->getHeader().ncmds; | |||
2338 | MachOObjectFile::LoadCommandInfo Load = info->O->getFirstLoadCommandInfo(); | |||
2339 | for (unsigned I = 0;; ++I) { | |||
2340 | if (Load.C.cmd == MachO::LC_SEGMENT_64) { | |||
2341 | MachO::segment_command_64 Seg = info->O->getSegment64LoadCommand(Load); | |||
2342 | for (unsigned J = 0; J < Seg.nsects; ++J) { | |||
2343 | MachO::section_64 Sec = info->O->getSection64(Load, J); | |||
2344 | if ((strncmp(Sec.sectname, "__objc_selrefs", 16) == 0 || | |||
2345 | strncmp(Sec.sectname, "__objc_classrefs", 16) == 0 || | |||
2346 | strncmp(Sec.sectname, "__objc_superrefs", 16) == 0 || | |||
2347 | strncmp(Sec.sectname, "__objc_msgrefs", 16) == 0 || | |||
2348 | strncmp(Sec.sectname, "__cfstring", 16) == 0) && | |||
2349 | ReferenceValue >= Sec.addr && | |||
2350 | ReferenceValue < Sec.addr + Sec.size) { | |||
2351 | uint64_t sect_offset = ReferenceValue - Sec.addr; | |||
2352 | uint64_t object_offset = Sec.offset + sect_offset; | |||
2353 | StringRef MachOContents = info->O->getData(); | |||
2354 | uint64_t object_size = MachOContents.size(); | |||
2355 | const char *object_addr = (const char *)MachOContents.data(); | |||
2356 | if (object_offset < object_size) { | |||
2357 | uint64_t pointer_value; | |||
2358 | memcpy(&pointer_value, object_addr + object_offset, | |||
2359 | sizeof(uint64_t)); | |||
2360 | if (info->O->isLittleEndian() != sys::IsLittleEndianHost) | |||
2361 | sys::swapByteOrder(pointer_value); | |||
2362 | if (strncmp(Sec.sectname, "__objc_selrefs", 16) == 0) | |||
2363 | selref = true; | |||
2364 | else if (strncmp(Sec.sectname, "__objc_classrefs", 16) == 0 || | |||
2365 | strncmp(Sec.sectname, "__objc_superrefs", 16) == 0) | |||
2366 | classref = true; | |||
2367 | else if (strncmp(Sec.sectname, "__objc_msgrefs", 16) == 0 && | |||
2368 | ReferenceValue + 8 < Sec.addr + Sec.size) { | |||
2369 | msgref = true; | |||
2370 | memcpy(&pointer_value, object_addr + object_offset + 8, | |||
2371 | sizeof(uint64_t)); | |||
2372 | if (info->O->isLittleEndian() != sys::IsLittleEndianHost) | |||
2373 | sys::swapByteOrder(pointer_value); | |||
2374 | } else if (strncmp(Sec.sectname, "__cfstring", 16) == 0) | |||
2375 | cfstring = true; | |||
2376 | return pointer_value; | |||
2377 | } else { | |||
2378 | return 0; | |||
2379 | } | |||
2380 | } | |||
2381 | } | |||
2382 | } | |||
2383 | // TODO: Look for LC_SEGMENT for 32-bit Mach-O files. | |||
2384 | if (I == LoadCommandCount - 1) | |||
2385 | break; | |||
2386 | else | |||
2387 | Load = info->O->getNextLoadCommandInfo(Load); | |||
2388 | } | |||
2389 | return 0; | |||
2390 | } | |||
2391 | ||||
2392 | // get_pointer_64 returns a pointer to the bytes in the object file at the | |||
2393 | // Address from a section in the Mach-O file. And indirectly returns the | |||
2394 | // offset into the section, number of bytes left in the section past the offset | |||
2395 | // and which section is was being referenced. If the Address is not in a | |||
2396 | // section nullptr is returned. | |||
2397 | static const char *get_pointer_64(uint64_t Address, uint32_t &offset, | |||
2398 | uint32_t &left, SectionRef &S, | |||
2399 | DisassembleInfo *info) { | |||
2400 | offset = 0; | |||
2401 | left = 0; | |||
2402 | S = SectionRef(); | |||
2403 | for (unsigned SectIdx = 0; SectIdx != info->Sections->size(); SectIdx++) { | |||
2404 | uint64_t SectAddress = ((*(info->Sections))[SectIdx]).getAddress(); | |||
2405 | uint64_t SectSize = ((*(info->Sections))[SectIdx]).getSize(); | |||
2406 | if (Address >= SectAddress && Address < SectAddress + SectSize) { | |||
2407 | S = (*(info->Sections))[SectIdx]; | |||
2408 | offset = Address - SectAddress; | |||
2409 | left = SectSize - offset; | |||
2410 | StringRef SectContents; | |||
2411 | ((*(info->Sections))[SectIdx]).getContents(SectContents); | |||
2412 | return SectContents.data() + offset; | |||
2413 | } | |||
2414 | } | |||
2415 | return nullptr; | |||
2416 | } | |||
2417 | ||||
2418 | // get_symbol_64() returns the name of a symbol (or nullptr) and the address of | |||
2419 | // the symbol indirectly through n_value. Based on the relocation information | |||
2420 | // for the specified section offset in the specified section reference. | |||
2421 | static const char *get_symbol_64(uint32_t sect_offset, SectionRef S, | |||
2422 | DisassembleInfo *info, uint64_t &n_value) { | |||
2423 | n_value = 0; | |||
2424 | if (info->verbose == false) | |||
2425 | return nullptr; | |||
2426 | ||||
2427 | // See if there is an external relocation entry at the sect_offset. | |||
2428 | bool reloc_found = false; | |||
2429 | DataRefImpl Rel; | |||
2430 | MachO::any_relocation_info RE; | |||
2431 | bool isExtern = false; | |||
2432 | SymbolRef Symbol; | |||
2433 | for (const RelocationRef &Reloc : S.relocations()) { | |||
2434 | uint64_t RelocOffset; | |||
2435 | Reloc.getOffset(RelocOffset); | |||
2436 | if (RelocOffset == sect_offset) { | |||
2437 | Rel = Reloc.getRawDataRefImpl(); | |||
2438 | RE = info->O->getRelocation(Rel); | |||
2439 | if (info->O->isRelocationScattered(RE)) | |||
2440 | continue; | |||
2441 | isExtern = info->O->getPlainRelocationExternal(RE); | |||
2442 | if (isExtern) { | |||
2443 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
2444 | Symbol = *RelocSym; | |||
2445 | } | |||
2446 | reloc_found = true; | |||
2447 | break; | |||
2448 | } | |||
2449 | } | |||
2450 | // If there is an external relocation entry for a symbol in this section | |||
2451 | // at this section_offset then use that symbol's value for the n_value | |||
2452 | // and return its name. | |||
2453 | const char *SymbolName = nullptr; | |||
2454 | if (reloc_found && isExtern) { | |||
2455 | Symbol.getAddress(n_value); | |||
2456 | StringRef name; | |||
2457 | Symbol.getName(name); | |||
2458 | if (!name.empty()) { | |||
2459 | SymbolName = name.data(); | |||
2460 | return SymbolName; | |||
2461 | } | |||
2462 | } | |||
2463 | ||||
2464 | // TODO: For fully linked images, look through the external relocation | |||
2465 | // entries off the dynamic symtab command. For these the r_offset is from the | |||
2466 | // start of the first writeable segment in the Mach-O file. So the offset | |||
2467 | // to this section from that segment is passed to this routine by the caller, | |||
2468 | // as the database_offset. Which is the difference of the section's starting | |||
2469 | // address and the first writable segment. | |||
2470 | // | |||
2471 | // NOTE: need add passing the database_offset to this routine. | |||
2472 | ||||
2473 | // TODO: We did not find an external relocation entry so look up the | |||
2474 | // ReferenceValue as an address of a symbol and if found return that symbol's | |||
2475 | // name. | |||
2476 | // | |||
2477 | // NOTE: need add passing the ReferenceValue to this routine. Then that code | |||
2478 | // would simply be this: | |||
2479 | // SymbolName = GuessSymbolName(ReferenceValue, info->AddrMap); | |||
2480 | ||||
2481 | return SymbolName; | |||
2482 | } | |||
2483 | ||||
2484 | // These are structs in the Objective-C meta data and read to produce the | |||
2485 | // comments for disassembly. While these are part of the ABI they are no | |||
2486 | // public defintions. So the are here not in include/llvm/Support/MachO.h . | |||
2487 | ||||
2488 | // The cfstring object in a 64-bit Mach-O file. | |||
2489 | struct cfstring64_t { | |||
2490 | uint64_t isa; // class64_t * (64-bit pointer) | |||
2491 | uint64_t flags; // flag bits | |||
2492 | uint64_t characters; // char * (64-bit pointer) | |||
2493 | uint64_t length; // number of non-NULL characters in above | |||
2494 | }; | |||
2495 | ||||
2496 | // The class object in a 64-bit Mach-O file. | |||
2497 | struct class64_t { | |||
2498 | uint64_t isa; // class64_t * (64-bit pointer) | |||
2499 | uint64_t superclass; // class64_t * (64-bit pointer) | |||
2500 | uint64_t cache; // Cache (64-bit pointer) | |||
2501 | uint64_t vtable; // IMP * (64-bit pointer) | |||
2502 | uint64_t data; // class_ro64_t * (64-bit pointer) | |||
2503 | }; | |||
2504 | ||||
2505 | struct class_ro64_t { | |||
2506 | uint32_t flags; | |||
2507 | uint32_t instanceStart; | |||
2508 | uint32_t instanceSize; | |||
2509 | uint32_t reserved; | |||
2510 | uint64_t ivarLayout; // const uint8_t * (64-bit pointer) | |||
2511 | uint64_t name; // const char * (64-bit pointer) | |||
2512 | uint64_t baseMethods; // const method_list_t * (64-bit pointer) | |||
2513 | uint64_t baseProtocols; // const protocol_list_t * (64-bit pointer) | |||
2514 | uint64_t ivars; // const ivar_list_t * (64-bit pointer) | |||
2515 | uint64_t weakIvarLayout; // const uint8_t * (64-bit pointer) | |||
2516 | uint64_t baseProperties; // const struct objc_property_list (64-bit pointer) | |||
2517 | }; | |||
2518 | ||||
2519 | inline void swapStruct(struct cfstring64_t &cfs) { | |||
2520 | sys::swapByteOrder(cfs.isa); | |||
2521 | sys::swapByteOrder(cfs.flags); | |||
2522 | sys::swapByteOrder(cfs.characters); | |||
2523 | sys::swapByteOrder(cfs.length); | |||
2524 | } | |||
2525 | ||||
2526 | inline void swapStruct(struct class64_t &c) { | |||
2527 | sys::swapByteOrder(c.isa); | |||
2528 | sys::swapByteOrder(c.superclass); | |||
2529 | sys::swapByteOrder(c.cache); | |||
2530 | sys::swapByteOrder(c.vtable); | |||
2531 | sys::swapByteOrder(c.data); | |||
2532 | } | |||
2533 | ||||
2534 | inline void swapStruct(struct class_ro64_t &cro) { | |||
2535 | sys::swapByteOrder(cro.flags); | |||
2536 | sys::swapByteOrder(cro.instanceStart); | |||
2537 | sys::swapByteOrder(cro.instanceSize); | |||
2538 | sys::swapByteOrder(cro.reserved); | |||
2539 | sys::swapByteOrder(cro.ivarLayout); | |||
2540 | sys::swapByteOrder(cro.name); | |||
2541 | sys::swapByteOrder(cro.baseMethods); | |||
2542 | sys::swapByteOrder(cro.baseProtocols); | |||
2543 | sys::swapByteOrder(cro.ivars); | |||
2544 | sys::swapByteOrder(cro.weakIvarLayout); | |||
2545 | sys::swapByteOrder(cro.baseProperties); | |||
2546 | } | |||
2547 | ||||
2548 | static const char *get_dyld_bind_info_symbolname(uint64_t ReferenceValue, | |||
2549 | struct DisassembleInfo *info); | |||
2550 | ||||
2551 | // get_objc2_64bit_class_name() is used for disassembly and is passed a pointer | |||
2552 | // to an Objective-C class and returns the class name. It is also passed the | |||
2553 | // address of the pointer, so when the pointer is zero as it can be in an .o | |||
2554 | // file, that is used to look for an external relocation entry with a symbol | |||
2555 | // name. | |||
2556 | static const char *get_objc2_64bit_class_name(uint64_t pointer_value, | |||
2557 | uint64_t ReferenceValue, | |||
2558 | struct DisassembleInfo *info) { | |||
2559 | const char *r; | |||
2560 | uint32_t offset, left; | |||
2561 | SectionRef S; | |||
2562 | ||||
2563 | // The pointer_value can be 0 in an object file and have a relocation | |||
2564 | // entry for the class symbol at the ReferenceValue (the address of the | |||
2565 | // pointer). | |||
2566 | if (pointer_value == 0) { | |||
2567 | r = get_pointer_64(ReferenceValue, offset, left, S, info); | |||
2568 | if (r == nullptr || left < sizeof(uint64_t)) | |||
2569 | return nullptr; | |||
2570 | uint64_t n_value; | |||
2571 | const char *symbol_name = get_symbol_64(offset, S, info, n_value); | |||
2572 | if (symbol_name == nullptr) | |||
2573 | return nullptr; | |||
2574 | const char *class_name = strrchr(symbol_name, '$'); | |||
2575 | if (class_name != nullptr && class_name[1] == '_' && class_name[2] != '\0') | |||
2576 | return class_name + 2; | |||
2577 | else | |||
2578 | return nullptr; | |||
2579 | } | |||
2580 | ||||
2581 | // The case were the pointer_value is non-zero and points to a class defined | |||
2582 | // in this Mach-O file. | |||
2583 | r = get_pointer_64(pointer_value, offset, left, S, info); | |||
2584 | if (r == nullptr || left < sizeof(struct class64_t)) | |||
2585 | return nullptr; | |||
2586 | struct class64_t c; | |||
2587 | memcpy(&c, r, sizeof(struct class64_t)); | |||
2588 | if (info->O->isLittleEndian() != sys::IsLittleEndianHost) | |||
2589 | swapStruct(c); | |||
2590 | if (c.data == 0) | |||
2591 | return nullptr; | |||
2592 | r = get_pointer_64(c.data, offset, left, S, info); | |||
2593 | if (r == nullptr || left < sizeof(struct class_ro64_t)) | |||
2594 | return nullptr; | |||
2595 | struct class_ro64_t cro; | |||
2596 | memcpy(&cro, r, sizeof(struct class_ro64_t)); | |||
2597 | if (info->O->isLittleEndian() != sys::IsLittleEndianHost) | |||
2598 | swapStruct(cro); | |||
2599 | if (cro.name == 0) | |||
2600 | return nullptr; | |||
2601 | const char *name = get_pointer_64(cro.name, offset, left, S, info); | |||
2602 | return name; | |||
2603 | } | |||
2604 | ||||
2605 | // get_objc2_64bit_cfstring_name is used for disassembly and is passed a | |||
2606 | // pointer to a cfstring and returns its name or nullptr. | |||
2607 | static const char *get_objc2_64bit_cfstring_name(uint64_t ReferenceValue, | |||
2608 | struct DisassembleInfo *info) { | |||
2609 | const char *r, *name; | |||
2610 | uint32_t offset, left; | |||
2611 | SectionRef S; | |||
2612 | struct cfstring64_t cfs; | |||
2613 | uint64_t cfs_characters; | |||
2614 | ||||
2615 | r = get_pointer_64(ReferenceValue, offset, left, S, info); | |||
2616 | if (r == nullptr || left < sizeof(struct cfstring64_t)) | |||
2617 | return nullptr; | |||
2618 | memcpy(&cfs, r, sizeof(struct cfstring64_t)); | |||
2619 | if (info->O->isLittleEndian() != sys::IsLittleEndianHost) | |||
2620 | swapStruct(cfs); | |||
2621 | if (cfs.characters == 0) { | |||
2622 | uint64_t n_value; | |||
2623 | const char *symbol_name = get_symbol_64( | |||
2624 | offset + offsetof(struct cfstring64_t, characters)__builtin_offsetof(struct cfstring64_t, characters), S, info, n_value); | |||
2625 | if (symbol_name == nullptr) | |||
2626 | return nullptr; | |||
2627 | cfs_characters = n_value; | |||
2628 | } else | |||
2629 | cfs_characters = cfs.characters; | |||
2630 | name = get_pointer_64(cfs_characters, offset, left, S, info); | |||
2631 | ||||
2632 | return name; | |||
2633 | } | |||
2634 | ||||
2635 | // get_objc2_64bit_selref() is used for disassembly and is passed a the address | |||
2636 | // of a pointer to an Objective-C selector reference when the pointer value is | |||
2637 | // zero as in a .o file and is likely to have a external relocation entry with | |||
2638 | // who's symbol's n_value is the real pointer to the selector name. If that is | |||
2639 | // the case the real pointer to the selector name is returned else 0 is | |||
2640 | // returned | |||
2641 | static uint64_t get_objc2_64bit_selref(uint64_t ReferenceValue, | |||
2642 | struct DisassembleInfo *info) { | |||
2643 | uint32_t offset, left; | |||
2644 | SectionRef S; | |||
2645 | ||||
2646 | const char *r = get_pointer_64(ReferenceValue, offset, left, S, info); | |||
2647 | if (r == nullptr || left < sizeof(uint64_t)) | |||
2648 | return 0; | |||
2649 | uint64_t n_value; | |||
2650 | const char *symbol_name = get_symbol_64(offset, S, info, n_value); | |||
2651 | if (symbol_name == nullptr) | |||
2652 | return 0; | |||
2653 | return n_value; | |||
2654 | } | |||
2655 | ||||
2656 | // GuessLiteralPointer returns a string which for the item in the Mach-O file | |||
2657 | // for the address passed in as ReferenceValue for printing as a comment with | |||
2658 | // the instruction and also returns the corresponding type of that item | |||
2659 | // indirectly through ReferenceType. | |||
2660 | // | |||
2661 | // If ReferenceValue is an address of literal cstring then a pointer to the | |||
2662 | // cstring is returned and ReferenceType is set to | |||
2663 | // LLVMDisassembler_ReferenceType_Out_LitPool_CstrAddr . | |||
2664 | // | |||
2665 | // If ReferenceValue is an address of an Objective-C CFString, Selector ref or | |||
2666 | // Class ref that name is returned and the ReferenceType is set accordingly. | |||
2667 | // | |||
2668 | // Lastly, literals which are Symbol address in a literal pool are looked for | |||
2669 | // and if found the symbol name is returned and ReferenceType is set to | |||
2670 | // LLVMDisassembler_ReferenceType_Out_LitPool_SymAddr . | |||
2671 | // | |||
2672 | // If there is no item in the Mach-O file for the address passed in as | |||
2673 | // ReferenceValue nullptr is returned and ReferenceType is unchanged. | |||
2674 | static const char *GuessLiteralPointer(uint64_t ReferenceValue, | |||
2675 | uint64_t ReferencePC, | |||
2676 | uint64_t *ReferenceType, | |||
2677 | struct DisassembleInfo *info) { | |||
2678 | // First see if there is an external relocation entry at the ReferencePC. | |||
2679 | uint64_t sect_addr = info->S.getAddress(); | |||
2680 | uint64_t sect_offset = ReferencePC - sect_addr; | |||
2681 | bool reloc_found = false; | |||
2682 | DataRefImpl Rel; | |||
2683 | MachO::any_relocation_info RE; | |||
2684 | bool isExtern = false; | |||
2685 | SymbolRef Symbol; | |||
2686 | for (const RelocationRef &Reloc : info->S.relocations()) { | |||
2687 | uint64_t RelocOffset; | |||
2688 | Reloc.getOffset(RelocOffset); | |||
2689 | if (RelocOffset == sect_offset) { | |||
2690 | Rel = Reloc.getRawDataRefImpl(); | |||
2691 | RE = info->O->getRelocation(Rel); | |||
2692 | if (info->O->isRelocationScattered(RE)) | |||
2693 | continue; | |||
2694 | isExtern = info->O->getPlainRelocationExternal(RE); | |||
2695 | if (isExtern) { | |||
2696 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
2697 | Symbol = *RelocSym; | |||
2698 | } | |||
2699 | reloc_found = true; | |||
2700 | break; | |||
2701 | } | |||
2702 | } | |||
2703 | // If there is an external relocation entry for a symbol in a section | |||
2704 | // then used that symbol's value for the value of the reference. | |||
2705 | if (reloc_found && isExtern) { | |||
2706 | if (info->O->getAnyRelocationPCRel(RE)) { | |||
2707 | unsigned Type = info->O->getAnyRelocationType(RE); | |||
2708 | if (Type == MachO::X86_64_RELOC_SIGNED) { | |||
2709 | Symbol.getAddress(ReferenceValue); | |||
2710 | } | |||
2711 | } | |||
2712 | } | |||
2713 | ||||
2714 | // Look for literals such as Objective-C CFStrings refs, Selector refs, | |||
2715 | // Message refs and Class refs. | |||
2716 | bool classref, selref, msgref, cfstring; | |||
2717 | uint64_t pointer_value = GuessPointerPointer(ReferenceValue, info, classref, | |||
2718 | selref, msgref, cfstring); | |||
2719 | if (classref == true && pointer_value == 0) { | |||
2720 | // Note the ReferenceValue is a pointer into the __objc_classrefs section. | |||
2721 | // And the pointer_value in that section is typically zero as it will be | |||
2722 | // set by dyld as part of the "bind information". | |||
2723 | const char *name = get_dyld_bind_info_symbolname(ReferenceValue, info); | |||
2724 | if (name != nullptr) { | |||
2725 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Class_Ref8; | |||
2726 | const char *class_name = strrchr(name, '$'); | |||
2727 | if (class_name != nullptr && class_name[1] == '_' && | |||
2728 | class_name[2] != '\0') { | |||
2729 | info->class_name = class_name + 2; | |||
2730 | return name; | |||
2731 | } | |||
2732 | } | |||
2733 | } | |||
2734 | ||||
2735 | if (classref == true) { | |||
2736 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Class_Ref8; | |||
2737 | const char *name = | |||
2738 | get_objc2_64bit_class_name(pointer_value, ReferenceValue, info); | |||
2739 | if (name != nullptr) | |||
2740 | info->class_name = name; | |||
2741 | else | |||
2742 | name = "bad class ref"; | |||
2743 | return name; | |||
2744 | } | |||
2745 | ||||
2746 | if (cfstring == true) { | |||
2747 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_CFString_Ref4; | |||
2748 | const char *name = get_objc2_64bit_cfstring_name(ReferenceValue, info); | |||
2749 | return name; | |||
2750 | } | |||
2751 | ||||
2752 | if (selref == true && pointer_value == 0) | |||
2753 | pointer_value = get_objc2_64bit_selref(ReferenceValue, info); | |||
2754 | ||||
2755 | if (pointer_value != 0) | |||
2756 | ReferenceValue = pointer_value; | |||
2757 | ||||
2758 | const char *name = GuessCstringPointer(ReferenceValue, info); | |||
2759 | if (name) { | |||
2760 | if (pointer_value != 0 && selref == true) { | |||
2761 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Selector_Ref7; | |||
2762 | info->selector_name = name; | |||
2763 | } else if (pointer_value != 0 && msgref == true) { | |||
2764 | info->class_name = nullptr; | |||
2765 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message_Ref6; | |||
2766 | info->selector_name = name; | |||
2767 | } else | |||
2768 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_LitPool_CstrAddr3; | |||
2769 | return name; | |||
2770 | } | |||
2771 | ||||
2772 | // Lastly look for an indirect symbol with this ReferenceValue which is in | |||
2773 | // a literal pool. If found return that symbol name. | |||
2774 | name = GuessIndirectSymbol(ReferenceValue, info); | |||
2775 | if (name) { | |||
2776 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_LitPool_SymAddr2; | |||
2777 | return name; | |||
2778 | } | |||
2779 | ||||
2780 | return nullptr; | |||
2781 | } | |||
2782 | ||||
2783 | // SymbolizerSymbolLookUp is the symbol lookup function passed when creating | |||
2784 | // the Symbolizer. It looks up the ReferenceValue using the info passed via the | |||
2785 | // pointer to the struct DisassembleInfo that was passed when MCSymbolizer | |||
2786 | // is created and returns the symbol name that matches the ReferenceValue or | |||
2787 | // nullptr if none. The ReferenceType is passed in for the IN type of | |||
2788 | // reference the instruction is making from the values in defined in the header | |||
2789 | // "llvm-c/Disassembler.h". On return the ReferenceType can set to a specific | |||
2790 | // Out type and the ReferenceName will also be set which is added as a comment | |||
2791 | // to the disassembled instruction. | |||
2792 | // | |||
2793 | #if HAVE_CXXABI_H1 | |||
2794 | // If the symbol name is a C++ mangled name then the demangled name is | |||
2795 | // returned through ReferenceName and ReferenceType is set to | |||
2796 | // LLVMDisassembler_ReferenceType_DeMangled_Name . | |||
2797 | #endif | |||
2798 | // | |||
2799 | // When this is called to get a symbol name for a branch target then the | |||
2800 | // ReferenceType will be LLVMDisassembler_ReferenceType_In_Branch and then | |||
2801 | // SymbolValue will be looked for in the indirect symbol table to determine if | |||
2802 | // it is an address for a symbol stub. If so then the symbol name for that | |||
2803 | // stub is returned indirectly through ReferenceName and then ReferenceType is | |||
2804 | // set to LLVMDisassembler_ReferenceType_Out_SymbolStub. | |||
2805 | // | |||
2806 | // When this is called with an value loaded via a PC relative load then | |||
2807 | // ReferenceType will be LLVMDisassembler_ReferenceType_In_PCrel_Load then the | |||
2808 | // SymbolValue is checked to be an address of literal pointer, symbol pointer, | |||
2809 | // or an Objective-C meta data reference. If so the output ReferenceType is | |||
2810 | // set to correspond to that as well as setting the ReferenceName. | |||
2811 | static const char *SymbolizerSymbolLookUp(void *DisInfo, | |||
2812 | uint64_t ReferenceValue, | |||
2813 | uint64_t *ReferenceType, | |||
2814 | uint64_t ReferencePC, | |||
2815 | const char **ReferenceName) { | |||
2816 | struct DisassembleInfo *info = (struct DisassembleInfo *)DisInfo; | |||
2817 | // If no verbose symbolic information is wanted then just return nullptr. | |||
2818 | if (info->verbose == false) { | |||
2819 | *ReferenceName = nullptr; | |||
2820 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2821 | return nullptr; | |||
2822 | } | |||
2823 | ||||
2824 | const char *SymbolName = GuessSymbolName(ReferenceValue, info->AddrMap); | |||
2825 | ||||
2826 | if (*ReferenceType == LLVMDisassembler_ReferenceType_In_Branch1) { | |||
2827 | *ReferenceName = GuessIndirectSymbol(ReferenceValue, info); | |||
2828 | if (*ReferenceName != nullptr) { | |||
2829 | method_reference(info, ReferenceType, ReferenceName); | |||
2830 | if (*ReferenceType != LLVMDisassembler_ReferenceType_Out_Objc_Message5) | |||
2831 | *ReferenceType = LLVMDisassembler_ReferenceType_Out_SymbolStub1; | |||
2832 | } else | |||
2833 | #if HAVE_CXXABI_H1 | |||
2834 | if (SymbolName != nullptr && strncmp(SymbolName, "__Z", 3) == 0) { | |||
2835 | if (info->demangled_name != nullptr) | |||
2836 | free(info->demangled_name); | |||
2837 | int status; | |||
2838 | info->demangled_name = | |||
2839 | abi::__cxa_demangle(SymbolName + 1, nullptr, nullptr, &status); | |||
2840 | if (info->demangled_name != nullptr) { | |||
2841 | *ReferenceName = info->demangled_name; | |||
2842 | *ReferenceType = LLVMDisassembler_ReferenceType_DeMangled_Name9; | |||
2843 | } else | |||
2844 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2845 | } else | |||
2846 | #endif | |||
2847 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2848 | } else if (*ReferenceType == LLVMDisassembler_ReferenceType_In_PCrel_Load2) { | |||
2849 | *ReferenceName = | |||
2850 | GuessLiteralPointer(ReferenceValue, ReferencePC, ReferenceType, info); | |||
2851 | if (*ReferenceName) | |||
2852 | method_reference(info, ReferenceType, ReferenceName); | |||
2853 | else | |||
2854 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2855 | // If this is arm64 and the reference is an adrp instruction save the | |||
2856 | // instruction, passed in ReferenceValue and the address of the instruction | |||
2857 | // for use later if we see and add immediate instruction. | |||
2858 | } else if (info->O->getArch() == Triple::aarch64 && | |||
2859 | *ReferenceType == LLVMDisassembler_ReferenceType_In_ARM64_ADRP0x100000001) { | |||
2860 | info->adrp_inst = ReferenceValue; | |||
2861 | info->adrp_addr = ReferencePC; | |||
2862 | SymbolName = nullptr; | |||
2863 | *ReferenceName = nullptr; | |||
2864 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2865 | // If this is arm64 and reference is an add immediate instruction and we | |||
2866 | // have | |||
2867 | // seen an adrp instruction just before it and the adrp's Xd register | |||
2868 | // matches | |||
2869 | // this add's Xn register reconstruct the value being referenced and look to | |||
2870 | // see if it is a literal pointer. Note the add immediate instruction is | |||
2871 | // passed in ReferenceValue. | |||
2872 | } else if (info->O->getArch() == Triple::aarch64 && | |||
2873 | *ReferenceType == LLVMDisassembler_ReferenceType_In_ARM64_ADDXri0x100000002 && | |||
2874 | ReferencePC - 4 == info->adrp_addr && | |||
2875 | (info->adrp_inst & 0x9f000000) == 0x90000000 && | |||
2876 | (info->adrp_inst & 0x1f) == ((ReferenceValue >> 5) & 0x1f)) { | |||
2877 | uint32_t addxri_inst; | |||
2878 | uint64_t adrp_imm, addxri_imm; | |||
2879 | ||||
2880 | adrp_imm = | |||
2881 | ((info->adrp_inst & 0x00ffffe0) >> 3) | ((info->adrp_inst >> 29) & 0x3); | |||
2882 | if (info->adrp_inst & 0x0200000) | |||
2883 | adrp_imm |= 0xfffffffffc000000LL; | |||
2884 | ||||
2885 | addxri_inst = ReferenceValue; | |||
2886 | addxri_imm = (addxri_inst >> 10) & 0xfff; | |||
2887 | if (((addxri_inst >> 22) & 0x3) == 1) | |||
2888 | addxri_imm <<= 12; | |||
2889 | ||||
2890 | ReferenceValue = (info->adrp_addr & 0xfffffffffffff000LL) + | |||
2891 | (adrp_imm << 12) + addxri_imm; | |||
2892 | ||||
2893 | *ReferenceName = | |||
2894 | GuessLiteralPointer(ReferenceValue, ReferencePC, ReferenceType, info); | |||
2895 | if (*ReferenceName == nullptr) | |||
2896 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2897 | // If this is arm64 and the reference is a load register instruction and we | |||
2898 | // have seen an adrp instruction just before it and the adrp's Xd register | |||
2899 | // matches this add's Xn register reconstruct the value being referenced and | |||
2900 | // look to see if it is a literal pointer. Note the load register | |||
2901 | // instruction is passed in ReferenceValue. | |||
2902 | } else if (info->O->getArch() == Triple::aarch64 && | |||
2903 | *ReferenceType == LLVMDisassembler_ReferenceType_In_ARM64_LDRXui0x100000003 && | |||
2904 | ReferencePC - 4 == info->adrp_addr && | |||
2905 | (info->adrp_inst & 0x9f000000) == 0x90000000 && | |||
2906 | (info->adrp_inst & 0x1f) == ((ReferenceValue >> 5) & 0x1f)) { | |||
2907 | uint32_t ldrxui_inst; | |||
2908 | uint64_t adrp_imm, ldrxui_imm; | |||
2909 | ||||
2910 | adrp_imm = | |||
2911 | ((info->adrp_inst & 0x00ffffe0) >> 3) | ((info->adrp_inst >> 29) & 0x3); | |||
2912 | if (info->adrp_inst & 0x0200000) | |||
2913 | adrp_imm |= 0xfffffffffc000000LL; | |||
2914 | ||||
2915 | ldrxui_inst = ReferenceValue; | |||
2916 | ldrxui_imm = (ldrxui_inst >> 10) & 0xfff; | |||
2917 | ||||
2918 | ReferenceValue = (info->adrp_addr & 0xfffffffffffff000LL) + | |||
2919 | (adrp_imm << 12) + (ldrxui_imm << 3); | |||
2920 | ||||
2921 | *ReferenceName = | |||
2922 | GuessLiteralPointer(ReferenceValue, ReferencePC, ReferenceType, info); | |||
2923 | if (*ReferenceName == nullptr) | |||
2924 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2925 | } | |||
2926 | // If this arm64 and is an load register (PC-relative) instruction the | |||
2927 | // ReferenceValue is the PC plus the immediate value. | |||
2928 | else if (info->O->getArch() == Triple::aarch64 && | |||
2929 | (*ReferenceType == LLVMDisassembler_ReferenceType_In_ARM64_LDRXl0x100000004 || | |||
2930 | *ReferenceType == LLVMDisassembler_ReferenceType_In_ARM64_ADR0x100000005)) { | |||
2931 | *ReferenceName = | |||
2932 | GuessLiteralPointer(ReferenceValue, ReferencePC, ReferenceType, info); | |||
2933 | if (*ReferenceName == nullptr) | |||
2934 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2935 | } | |||
2936 | #if HAVE_CXXABI_H1 | |||
2937 | else if (SymbolName != nullptr && strncmp(SymbolName, "__Z", 3) == 0) { | |||
2938 | if (info->demangled_name != nullptr) | |||
2939 | free(info->demangled_name); | |||
2940 | int status; | |||
2941 | info->demangled_name = | |||
2942 | abi::__cxa_demangle(SymbolName + 1, nullptr, nullptr, &status); | |||
2943 | if (info->demangled_name != nullptr) { | |||
2944 | *ReferenceName = info->demangled_name; | |||
2945 | *ReferenceType = LLVMDisassembler_ReferenceType_DeMangled_Name9; | |||
2946 | } | |||
2947 | } | |||
2948 | #endif | |||
2949 | else { | |||
2950 | *ReferenceName = nullptr; | |||
2951 | *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None0; | |||
2952 | } | |||
2953 | ||||
2954 | return SymbolName; | |||
2955 | } | |||
2956 | ||||
2957 | /// \brief Emits the comments that are stored in the CommentStream. | |||
2958 | /// Each comment in the CommentStream must end with a newline. | |||
2959 | static void emitComments(raw_svector_ostream &CommentStream, | |||
2960 | SmallString<128> &CommentsToEmit, | |||
2961 | formatted_raw_ostream &FormattedOS, | |||
2962 | const MCAsmInfo &MAI) { | |||
2963 | // Flush the stream before taking its content. | |||
2964 | CommentStream.flush(); | |||
2965 | StringRef Comments = CommentsToEmit.str(); | |||
2966 | // Get the default information for printing a comment. | |||
2967 | const char *CommentBegin = MAI.getCommentString(); | |||
2968 | unsigned CommentColumn = MAI.getCommentColumn(); | |||
2969 | bool IsFirst = true; | |||
2970 | while (!Comments.empty()) { | |||
2971 | if (!IsFirst) | |||
2972 | FormattedOS << '\n'; | |||
2973 | // Emit a line of comments. | |||
2974 | FormattedOS.PadToColumn(CommentColumn); | |||
2975 | size_t Position = Comments.find('\n'); | |||
2976 | FormattedOS << CommentBegin << ' ' << Comments.substr(0, Position); | |||
2977 | // Move after the newline character. | |||
2978 | Comments = Comments.substr(Position + 1); | |||
2979 | IsFirst = false; | |||
2980 | } | |||
2981 | FormattedOS.flush(); | |||
2982 | ||||
2983 | // Tell the comment stream that the vector changed underneath it. | |||
2984 | CommentsToEmit.clear(); | |||
2985 | CommentStream.resync(); | |||
2986 | } | |||
2987 | ||||
2988 | static void DisassembleMachO(StringRef Filename, MachOObjectFile *MachOOF, | |||
2989 | StringRef DisSegName, StringRef DisSectName) { | |||
2990 | const char *McpuDefault = nullptr; | |||
2991 | const Target *ThumbTarget = nullptr; | |||
2992 | const Target *TheTarget = GetTarget(MachOOF, &McpuDefault, &ThumbTarget); | |||
2993 | if (!TheTarget) { | |||
2994 | // GetTarget prints out stuff. | |||
2995 | return; | |||
2996 | } | |||
2997 | if (MCPU.empty() && McpuDefault) | |||
2998 | MCPU = McpuDefault; | |||
2999 | ||||
3000 | std::unique_ptr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo()); | |||
3001 | std::unique_ptr<const MCInstrInfo> ThumbInstrInfo; | |||
3002 | if (ThumbTarget) | |||
3003 | ThumbInstrInfo.reset(ThumbTarget->createMCInstrInfo()); | |||
3004 | ||||
3005 | // Package up features to be passed to target/subtarget | |||
3006 | std::string FeaturesStr; | |||
3007 | if (MAttrs.size()) { | |||
3008 | SubtargetFeatures Features; | |||
3009 | for (unsigned i = 0; i != MAttrs.size(); ++i) | |||
3010 | Features.AddFeature(MAttrs[i]); | |||
3011 | FeaturesStr = Features.getString(); | |||
3012 | } | |||
3013 | ||||
3014 | // Set up disassembler. | |||
3015 | std::unique_ptr<const MCRegisterInfo> MRI( | |||
3016 | TheTarget->createMCRegInfo(TripleName)); | |||
3017 | std::unique_ptr<const MCAsmInfo> AsmInfo( | |||
3018 | TheTarget->createMCAsmInfo(*MRI, TripleName)); | |||
3019 | std::unique_ptr<const MCSubtargetInfo> STI( | |||
3020 | TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr)); | |||
3021 | MCContext Ctx(AsmInfo.get(), MRI.get(), nullptr); | |||
3022 | std::unique_ptr<MCDisassembler> DisAsm( | |||
3023 | TheTarget->createMCDisassembler(*STI, Ctx)); | |||
3024 | std::unique_ptr<MCSymbolizer> Symbolizer; | |||
3025 | struct DisassembleInfo SymbolizerInfo; | |||
3026 | std::unique_ptr<MCRelocationInfo> RelInfo( | |||
3027 | TheTarget->createMCRelocationInfo(TripleName, Ctx)); | |||
3028 | if (RelInfo) { | |||
3029 | Symbolizer.reset(TheTarget->createMCSymbolizer( | |||
3030 | TripleName, SymbolizerGetOpInfo, SymbolizerSymbolLookUp, | |||
3031 | &SymbolizerInfo, &Ctx, std::move(RelInfo))); | |||
3032 | DisAsm->setSymbolizer(std::move(Symbolizer)); | |||
3033 | } | |||
3034 | int AsmPrinterVariant = AsmInfo->getAssemblerDialect(); | |||
3035 | std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter( | |||
3036 | AsmPrinterVariant, *AsmInfo, *InstrInfo, *MRI, *STI)); | |||
3037 | // Set the display preference for hex vs. decimal immediates. | |||
3038 | IP->setPrintImmHex(PrintImmHex); | |||
3039 | // Comment stream and backing vector. | |||
3040 | SmallString<128> CommentsToEmit; | |||
3041 | raw_svector_ostream CommentStream(CommentsToEmit); | |||
3042 | // FIXME: Setting the CommentStream in the InstPrinter is problematic in that | |||
3043 | // if it is done then arm64 comments for string literals don't get printed | |||
3044 | // and some constant get printed instead and not setting it causes intel | |||
3045 | // (32-bit and 64-bit) comments printed with different spacing before the | |||
3046 | // comment causing different diffs with the 'C' disassembler library API. | |||
3047 | // IP->setCommentStream(CommentStream); | |||
3048 | ||||
3049 | if (!AsmInfo || !STI || !DisAsm || !IP) { | |||
3050 | errs() << "error: couldn't initialize disassembler for target " | |||
3051 | << TripleName << '\n'; | |||
3052 | return; | |||
3053 | } | |||
3054 | ||||
3055 | // Set up thumb disassembler. | |||
3056 | std::unique_ptr<const MCRegisterInfo> ThumbMRI; | |||
3057 | std::unique_ptr<const MCAsmInfo> ThumbAsmInfo; | |||
3058 | std::unique_ptr<const MCSubtargetInfo> ThumbSTI; | |||
3059 | std::unique_ptr<MCDisassembler> ThumbDisAsm; | |||
3060 | std::unique_ptr<MCInstPrinter> ThumbIP; | |||
3061 | std::unique_ptr<MCContext> ThumbCtx; | |||
3062 | std::unique_ptr<MCSymbolizer> ThumbSymbolizer; | |||
3063 | struct DisassembleInfo ThumbSymbolizerInfo; | |||
3064 | std::unique_ptr<MCRelocationInfo> ThumbRelInfo; | |||
3065 | if (ThumbTarget) { | |||
3066 | ThumbMRI.reset(ThumbTarget->createMCRegInfo(ThumbTripleName)); | |||
3067 | ThumbAsmInfo.reset( | |||
3068 | ThumbTarget->createMCAsmInfo(*ThumbMRI, ThumbTripleName)); | |||
3069 | ThumbSTI.reset( | |||
3070 | ThumbTarget->createMCSubtargetInfo(ThumbTripleName, MCPU, FeaturesStr)); | |||
3071 | ThumbCtx.reset(new MCContext(ThumbAsmInfo.get(), ThumbMRI.get(), nullptr)); | |||
3072 | ThumbDisAsm.reset(ThumbTarget->createMCDisassembler(*ThumbSTI, *ThumbCtx)); | |||
3073 | MCContext *PtrThumbCtx = ThumbCtx.get(); | |||
3074 | ThumbRelInfo.reset( | |||
3075 | ThumbTarget->createMCRelocationInfo(ThumbTripleName, *PtrThumbCtx)); | |||
3076 | if (ThumbRelInfo) { | |||
3077 | ThumbSymbolizer.reset(ThumbTarget->createMCSymbolizer( | |||
3078 | ThumbTripleName, SymbolizerGetOpInfo, SymbolizerSymbolLookUp, | |||
3079 | &ThumbSymbolizerInfo, PtrThumbCtx, std::move(ThumbRelInfo))); | |||
3080 | ThumbDisAsm->setSymbolizer(std::move(ThumbSymbolizer)); | |||
3081 | } | |||
3082 | int ThumbAsmPrinterVariant = ThumbAsmInfo->getAssemblerDialect(); | |||
3083 | ThumbIP.reset(ThumbTarget->createMCInstPrinter( | |||
3084 | ThumbAsmPrinterVariant, *ThumbAsmInfo, *ThumbInstrInfo, *ThumbMRI, | |||
3085 | *ThumbSTI)); | |||
3086 | // Set the display preference for hex vs. decimal immediates. | |||
3087 | ThumbIP->setPrintImmHex(PrintImmHex); | |||
3088 | } | |||
3089 | ||||
3090 | if (ThumbTarget && (!ThumbAsmInfo || !ThumbSTI || !ThumbDisAsm || !ThumbIP)) { | |||
3091 | errs() << "error: couldn't initialize disassembler for target " | |||
3092 | << ThumbTripleName << '\n'; | |||
3093 | return; | |||
3094 | } | |||
3095 | ||||
3096 | MachO::mach_header Header = MachOOF->getHeader(); | |||
3097 | ||||
3098 | // FIXME: Using the -cfg command line option, this code used to be able to | |||
3099 | // annotate relocations with the referenced symbol's name, and if this was | |||
3100 | // inside a __[cf]string section, the data it points to. This is now replaced | |||
3101 | // by the upcoming MCSymbolizer, which needs the appropriate setup done above. | |||
3102 | std::vector<SectionRef> Sections; | |||
3103 | std::vector<SymbolRef> Symbols; | |||
3104 | SmallVector<uint64_t, 8> FoundFns; | |||
3105 | uint64_t BaseSegmentAddress; | |||
3106 | ||||
3107 | getSectionsAndSymbols(Header, MachOOF, Sections, Symbols, FoundFns, | |||
3108 | BaseSegmentAddress); | |||
3109 | ||||
3110 | // Sort the symbols by address, just in case they didn't come in that way. | |||
3111 | std::sort(Symbols.begin(), Symbols.end(), SymbolSorter()); | |||
3112 | ||||
3113 | // Build a data in code table that is sorted on by the address of each entry. | |||
3114 | uint64_t BaseAddress = 0; | |||
3115 | if (Header.filetype == MachO::MH_OBJECT) | |||
3116 | BaseAddress = Sections[0].getAddress(); | |||
3117 | else | |||
3118 | BaseAddress = BaseSegmentAddress; | |||
3119 | DiceTable Dices; | |||
3120 | for (dice_iterator DI = MachOOF->begin_dices(), DE = MachOOF->end_dices(); | |||
3121 | DI != DE; ++DI) { | |||
3122 | uint32_t Offset; | |||
3123 | DI->getOffset(Offset); | |||
3124 | Dices.push_back(std::make_pair(BaseAddress + Offset, *DI)); | |||
3125 | } | |||
3126 | array_pod_sort(Dices.begin(), Dices.end()); | |||
3127 | ||||
3128 | #ifndef NDEBUG | |||
3129 | raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls(); | |||
3130 | #else | |||
3131 | raw_ostream &DebugOut = nulls(); | |||
3132 | #endif | |||
3133 | ||||
3134 | std::unique_ptr<DIContext> diContext; | |||
3135 | ObjectFile *DbgObj = MachOOF; | |||
3136 | // Try to find debug info and set up the DIContext for it. | |||
3137 | if (UseDbg) { | |||
3138 | // A separate DSym file path was specified, parse it as a macho file, | |||
3139 | // get the sections and supply it to the section name parsing machinery. | |||
3140 | if (!DSYMFile.empty()) { | |||
3141 | ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr = | |||
3142 | MemoryBuffer::getFileOrSTDIN(DSYMFile); | |||
3143 | if (std::error_code EC = BufOrErr.getError()) { | |||
3144 | errs() << "llvm-objdump: " << Filename << ": " << EC.message() << '\n'; | |||
3145 | return; | |||
3146 | } | |||
3147 | DbgObj = | |||
3148 | ObjectFile::createMachOObjectFile(BufOrErr.get()->getMemBufferRef()) | |||
3149 | .get() | |||
3150 | .release(); | |||
3151 | } | |||
3152 | ||||
3153 | // Setup the DIContext | |||
3154 | diContext.reset(DIContext::getDWARFContext(*DbgObj)); | |||
3155 | } | |||
3156 | ||||
3157 | if (DumpSections.size() == 0) | |||
3158 | outs() << "(" << DisSegName << "," << DisSectName << ") section\n"; | |||
3159 | ||||
3160 | for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) { | |||
3161 | StringRef SectName; | |||
3162 | if (Sections[SectIdx].getName(SectName) || SectName != DisSectName) | |||
3163 | continue; | |||
3164 | ||||
3165 | DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl(); | |||
3166 | ||||
3167 | StringRef SegmentName = MachOOF->getSectionFinalSegmentName(DR); | |||
3168 | if (SegmentName != DisSegName) | |||
3169 | continue; | |||
3170 | ||||
3171 | StringRef BytesStr; | |||
3172 | Sections[SectIdx].getContents(BytesStr); | |||
3173 | ArrayRef<uint8_t> Bytes(reinterpret_cast<const uint8_t *>(BytesStr.data()), | |||
3174 | BytesStr.size()); | |||
3175 | uint64_t SectAddress = Sections[SectIdx].getAddress(); | |||
3176 | ||||
3177 | bool symbolTableWorked = false; | |||
3178 | ||||
3179 | // Parse relocations. | |||
3180 | std::vector<std::pair<uint64_t, SymbolRef>> Relocs; | |||
3181 | for (const RelocationRef &Reloc : Sections[SectIdx].relocations()) { | |||
3182 | uint64_t RelocOffset; | |||
3183 | Reloc.getOffset(RelocOffset); | |||
3184 | uint64_t SectionAddress = Sections[SectIdx].getAddress(); | |||
3185 | RelocOffset -= SectionAddress; | |||
3186 | ||||
3187 | symbol_iterator RelocSym = Reloc.getSymbol(); | |||
3188 | ||||
3189 | Relocs.push_back(std::make_pair(RelocOffset, *RelocSym)); | |||
3190 | } | |||
3191 | array_pod_sort(Relocs.begin(), Relocs.end()); | |||
3192 | ||||
3193 | // Create a map of symbol addresses to symbol names for use by | |||
3194 | // the SymbolizerSymbolLookUp() routine. | |||
3195 | SymbolAddressMap AddrMap; | |||
3196 | bool DisSymNameFound = false; | |||
3197 | for (const SymbolRef &Symbol : MachOOF->symbols()) { | |||
3198 | SymbolRef::Type ST; | |||
3199 | Symbol.getType(ST); | |||
3200 | if (ST == SymbolRef::ST_Function || ST == SymbolRef::ST_Data || | |||
3201 | ST == SymbolRef::ST_Other) { | |||
3202 | uint64_t Address; | |||
3203 | Symbol.getAddress(Address); | |||
3204 | StringRef SymName; | |||
3205 | Symbol.getName(SymName); | |||
3206 | AddrMap[Address] = SymName; | |||
3207 | if (!DisSymName.empty() && DisSymName == SymName) | |||
3208 | DisSymNameFound = true; | |||
3209 | } | |||
3210 | } | |||
3211 | if (!DisSymName.empty() && DisSymNameFound == false) { | |||
3212 | outs() << "Can't find -dis-symname: " << DisSymName << "\n"; | |||
3213 | return; | |||
3214 | } | |||
3215 | // Set up the block of info used by the Symbolizer call backs. | |||
3216 | SymbolizerInfo.verbose = !NoSymbolicOperands; | |||
3217 | SymbolizerInfo.O = MachOOF; | |||
3218 | SymbolizerInfo.S = Sections[SectIdx]; | |||
3219 | SymbolizerInfo.AddrMap = &AddrMap; | |||
3220 | SymbolizerInfo.Sections = &Sections; | |||
3221 | SymbolizerInfo.class_name = nullptr; | |||
3222 | SymbolizerInfo.selector_name = nullptr; | |||
3223 | SymbolizerInfo.method = nullptr; | |||
3224 | SymbolizerInfo.demangled_name = nullptr; | |||
3225 | SymbolizerInfo.bindtable = nullptr; | |||
3226 | SymbolizerInfo.adrp_addr = 0; | |||
3227 | SymbolizerInfo.adrp_inst = 0; | |||
3228 | // Same for the ThumbSymbolizer | |||
3229 | ThumbSymbolizerInfo.verbose = !NoSymbolicOperands; | |||
3230 | ThumbSymbolizerInfo.O = MachOOF; | |||
3231 | ThumbSymbolizerInfo.S = Sections[SectIdx]; | |||
3232 | ThumbSymbolizerInfo.AddrMap = &AddrMap; | |||
3233 | ThumbSymbolizerInfo.Sections = &Sections; | |||
3234 | ThumbSymbolizerInfo.class_name = nullptr; | |||
3235 | ThumbSymbolizerInfo.selector_name = nullptr; | |||
3236 | ThumbSymbolizerInfo.method = nullptr; | |||
3237 | ThumbSymbolizerInfo.demangled_name = nullptr; | |||
3238 | ThumbSymbolizerInfo.bindtable = nullptr; | |||
3239 | ThumbSymbolizerInfo.adrp_addr = 0; | |||
3240 | ThumbSymbolizerInfo.adrp_inst = 0; | |||
3241 | ||||
3242 | // Disassemble symbol by symbol. | |||
3243 | for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) { | |||
3244 | StringRef SymName; | |||
3245 | Symbols[SymIdx].getName(SymName); | |||
3246 | ||||
3247 | SymbolRef::Type ST; | |||
3248 | Symbols[SymIdx].getType(ST); | |||
3249 | if (ST != SymbolRef::ST_Function) | |||
3250 | continue; | |||
3251 | ||||
3252 | // Make sure the symbol is defined in this section. | |||
3253 | bool containsSym = Sections[SectIdx].containsSymbol(Symbols[SymIdx]); | |||
3254 | if (!containsSym) | |||
3255 | continue; | |||
3256 | ||||
3257 | // If we are only disassembling one symbol see if this is that symbol. | |||
3258 | if (!DisSymName.empty() && DisSymName != SymName) | |||
3259 | continue; | |||
3260 | ||||
3261 | // Start at the address of the symbol relative to the section's address. | |||
3262 | uint64_t Start = 0; | |||
3263 | uint64_t SectionAddress = Sections[SectIdx].getAddress(); | |||
3264 | Symbols[SymIdx].getAddress(Start); | |||
3265 | Start -= SectionAddress; | |||
3266 | ||||
3267 | // Stop disassembling either at the beginning of the next symbol or at | |||
3268 | // the end of the section. | |||
3269 | bool containsNextSym = false; | |||
3270 | uint64_t NextSym = 0; | |||
3271 | uint64_t NextSymIdx = SymIdx + 1; | |||
3272 | while (Symbols.size() > NextSymIdx) { | |||
3273 | SymbolRef::Type NextSymType; | |||
3274 | Symbols[NextSymIdx].getType(NextSymType); | |||
3275 | if (NextSymType == SymbolRef::ST_Function) { | |||
3276 | containsNextSym = | |||
3277 | Sections[SectIdx].containsSymbol(Symbols[NextSymIdx]); | |||
3278 | Symbols[NextSymIdx].getAddress(NextSym); | |||
3279 | NextSym -= SectionAddress; | |||
3280 | break; | |||
3281 | } | |||
3282 | ++NextSymIdx; | |||
3283 | } | |||
3284 | ||||
3285 | uint64_t SectSize = Sections[SectIdx].getSize(); | |||
3286 | uint64_t End = containsNextSym ? NextSym : SectSize; | |||
3287 | uint64_t Size; | |||
3288 | ||||
3289 | symbolTableWorked = true; | |||
3290 | ||||
3291 | DataRefImpl Symb = Symbols[SymIdx].getRawDataRefImpl(); | |||
3292 | bool isThumb = | |||
3293 | (MachOOF->getSymbolFlags(Symb) & SymbolRef::SF_Thumb) && ThumbTarget; | |||
3294 | ||||
3295 | outs() << SymName << ":\n"; | |||
3296 | DILineInfo lastLine; | |||
3297 | for (uint64_t Index = Start; Index < End; Index += Size) { | |||
3298 | MCInst Inst; | |||
3299 | ||||
3300 | uint64_t PC = SectAddress + Index; | |||
3301 | if (!NoLeadingAddr) { | |||
3302 | if (FullLeadingAddr) { | |||
3303 | if (MachOOF->is64Bit()) | |||
3304 | outs() << format("%016" PRIx64"l" "x", PC); | |||
3305 | else | |||
3306 | outs() << format("%08" PRIx64"l" "x", PC); | |||
3307 | } else { | |||
3308 | outs() << format("%8" PRIx64"l" "x" ":", PC); | |||
3309 | } | |||
3310 | } | |||
3311 | if (!NoShowRawInsn) | |||
3312 | outs() << "\t"; | |||
3313 | ||||
3314 | // Check the data in code table here to see if this is data not an | |||
3315 | // instruction to be disassembled. | |||
3316 | DiceTable Dice; | |||
3317 | Dice.push_back(std::make_pair(PC, DiceRef())); | |||
3318 | dice_table_iterator DTI = | |||
3319 | std::search(Dices.begin(), Dices.end(), Dice.begin(), Dice.end(), | |||
3320 | compareDiceTableEntries); | |||
3321 | if (DTI != Dices.end()) { | |||
3322 | uint16_t Length; | |||
3323 | DTI->second.getLength(Length); | |||
3324 | uint16_t Kind; | |||
3325 | DTI->second.getKind(Kind); | |||
3326 | Size = DumpDataInCode(Bytes.data() + Index, Length, Kind); | |||
3327 | if ((Kind == MachO::DICE_KIND_JUMP_TABLE8) && | |||
3328 | (PC == (DTI->first + Length - 1)) && (Length & 1)) | |||
3329 | Size++; | |||
3330 | continue; | |||
3331 | } | |||
3332 | ||||
3333 | SmallVector<char, 64> AnnotationsBytes; | |||
3334 | raw_svector_ostream Annotations(AnnotationsBytes); | |||
3335 | ||||
3336 | bool gotInst; | |||
3337 | if (isThumb) | |||
3338 | gotInst = ThumbDisAsm->getInstruction(Inst, Size, Bytes.slice(Index), | |||
3339 | PC, DebugOut, Annotations); | |||
3340 | else | |||
3341 | gotInst = DisAsm->getInstruction(Inst, Size, Bytes.slice(Index), PC, | |||
3342 | DebugOut, Annotations); | |||
3343 | if (gotInst) { | |||
3344 | if (!NoShowRawInsn) { | |||
3345 | DumpBytes(ArrayRef<uint8_t>(Bytes.data() + Index, Size)); | |||
3346 | } | |||
3347 | formatted_raw_ostream FormattedOS(outs()); | |||
3348 | Annotations.flush(); | |||
3349 | StringRef AnnotationsStr = Annotations.str(); | |||
3350 | if (isThumb) | |||
3351 | ThumbIP->printInst(&Inst, FormattedOS, AnnotationsStr); | |||
3352 | else | |||
3353 | IP->printInst(&Inst, FormattedOS, AnnotationsStr); | |||
3354 | emitComments(CommentStream, CommentsToEmit, FormattedOS, *AsmInfo); | |||
3355 | ||||
3356 | // Print debug info. | |||
3357 | if (diContext) { | |||
3358 | DILineInfo dli = diContext->getLineInfoForAddress(PC); | |||
3359 | // Print valid line info if it changed. | |||
3360 | if (dli != lastLine && dli.Line != 0) | |||
3361 | outs() << "\t## " << dli.FileName << ':' << dli.Line << ':' | |||
3362 | << dli.Column; | |||
3363 | lastLine = dli; | |||
3364 | } | |||
3365 | outs() << "\n"; | |||
3366 | } else { | |||
3367 | unsigned int Arch = MachOOF->getArch(); | |||
3368 | if (Arch == Triple::x86_64 || Arch == Triple::x86) { | |||
3369 | outs() << format("\t.byte 0x%02x #bad opcode\n", | |||
3370 | *(Bytes.data() + Index) & 0xff); | |||
3371 | Size = 1; // skip exactly one illegible byte and move on. | |||
3372 | } else if (Arch == Triple::aarch64) { | |||
3373 | uint32_t opcode = (*(Bytes.data() + Index) & 0xff) | | |||
3374 | (*(Bytes.data() + Index + 1) & 0xff) << 8 | | |||
3375 | (*(Bytes.data() + Index + 2) & 0xff) << 16 | | |||
3376 | (*(Bytes.data() + Index + 3) & 0xff) << 24; | |||
3377 | outs() << format("\t.long\t0x%08x\n", opcode); | |||
3378 | Size = 4; | |||
3379 | } else { | |||
3380 | errs() << "llvm-objdump: warning: invalid instruction encoding\n"; | |||
3381 | if (Size == 0) | |||
3382 | Size = 1; // skip illegible bytes | |||
3383 | } | |||
3384 | } | |||
3385 | } | |||
3386 | } | |||
3387 | if (!symbolTableWorked) { | |||
3388 | // Reading the symbol table didn't work, disassemble the whole section. | |||
3389 | uint64_t SectAddress = Sections[SectIdx].getAddress(); | |||
3390 | uint64_t SectSize = Sections[SectIdx].getSize(); | |||
3391 | uint64_t InstSize; | |||
3392 | for (uint64_t Index = 0; Index < SectSize; Index += InstSize) { | |||
3393 | MCInst Inst; | |||
3394 | ||||
3395 | uint64_t PC = SectAddress + Index; | |||
3396 | if (DisAsm->getInstruction(Inst, InstSize, Bytes.slice(Index), PC, | |||
3397 | DebugOut, nulls())) { | |||
3398 | if (!NoLeadingAddr) { | |||
3399 | if (FullLeadingAddr) { | |||
3400 | if (MachOOF->is64Bit()) | |||
3401 | outs() << format("%016" PRIx64"l" "x", PC); | |||
3402 | else | |||
3403 | outs() << format("%08" PRIx64"l" "x", PC); | |||
3404 | } else { | |||
3405 | outs() << format("%8" PRIx64"l" "x" ":", PC); | |||
3406 | } | |||
3407 | } | |||
3408 | if (!NoShowRawInsn) { | |||
3409 | outs() << "\t"; | |||
3410 | DumpBytes(ArrayRef<uint8_t>(Bytes.data() + Index, InstSize)); | |||
3411 | } | |||
3412 | IP->printInst(&Inst, outs(), ""); | |||
3413 | outs() << "\n"; | |||
3414 | } else { | |||
3415 | unsigned int Arch = MachOOF->getArch(); | |||
3416 | if (Arch == Triple::x86_64 || Arch == Triple::x86) { | |||
3417 | outs() << format("\t.byte 0x%02x #bad opcode\n", | |||
3418 | *(Bytes.data() + Index) & 0xff); | |||
3419 | InstSize = 1; // skip exactly one illegible byte and move on. | |||
3420 | } else { | |||
3421 | errs() << "llvm-objdump: warning: invalid instruction encoding\n"; | |||
3422 | if (InstSize == 0) | |||
3423 | InstSize = 1; // skip illegible bytes | |||
3424 | } | |||
3425 | } | |||
3426 | } | |||
3427 | } | |||
3428 | // The TripleName's need to be reset if we are called again for a different | |||
3429 | // archtecture. | |||
3430 | TripleName = ""; | |||
3431 | ThumbTripleName = ""; | |||
3432 | ||||
3433 | if (SymbolizerInfo.method != nullptr) | |||
3434 | free(SymbolizerInfo.method); | |||
3435 | if (SymbolizerInfo.demangled_name != nullptr) | |||
3436 | free(SymbolizerInfo.demangled_name); | |||
3437 | if (SymbolizerInfo.bindtable != nullptr) | |||
3438 | delete SymbolizerInfo.bindtable; | |||
3439 | if (ThumbSymbolizerInfo.method != nullptr) | |||
3440 | free(ThumbSymbolizerInfo.method); | |||
3441 | if (ThumbSymbolizerInfo.demangled_name != nullptr) | |||
3442 | free(ThumbSymbolizerInfo.demangled_name); | |||
3443 | if (ThumbSymbolizerInfo.bindtable != nullptr) | |||
3444 | delete ThumbSymbolizerInfo.bindtable; | |||
3445 | } | |||
3446 | } | |||
3447 | ||||
3448 | //===----------------------------------------------------------------------===// | |||
3449 | // __compact_unwind section dumping | |||
3450 | //===----------------------------------------------------------------------===// | |||
3451 | ||||
3452 | namespace { | |||
3453 | ||||
3454 | template <typename T> static uint64_t readNext(const char *&Buf) { | |||
3455 | using llvm::support::little; | |||
3456 | using llvm::support::unaligned; | |||
3457 | ||||
3458 | uint64_t Val = support::endian::read<T, little, unaligned>(Buf); | |||
3459 | Buf += sizeof(T); | |||
3460 | return Val; | |||
3461 | } | |||
3462 | ||||
3463 | struct CompactUnwindEntry { | |||
3464 | uint32_t OffsetInSection; | |||
3465 | ||||
3466 | uint64_t FunctionAddr; | |||
3467 | uint32_t Length; | |||
3468 | uint32_t CompactEncoding; | |||
3469 | uint64_t PersonalityAddr; | |||
3470 | uint64_t LSDAAddr; | |||
3471 | ||||
3472 | RelocationRef FunctionReloc; | |||
3473 | RelocationRef PersonalityReloc; | |||
3474 | RelocationRef LSDAReloc; | |||
3475 | ||||
3476 | CompactUnwindEntry(StringRef Contents, unsigned Offset, bool Is64) | |||
3477 | : OffsetInSection(Offset) { | |||
3478 | if (Is64) | |||
3479 | read<uint64_t>(Contents.data() + Offset); | |||
3480 | else | |||
3481 | read<uint32_t>(Contents.data() + Offset); | |||
3482 | } | |||
3483 | ||||
3484 | private: | |||
3485 | template <typename UIntPtr> void read(const char *Buf) { | |||
3486 | FunctionAddr = readNext<UIntPtr>(Buf); | |||
3487 | Length = readNext<uint32_t>(Buf); | |||
3488 | CompactEncoding = readNext<uint32_t>(Buf); | |||
3489 | PersonalityAddr = readNext<UIntPtr>(Buf); | |||
3490 | LSDAAddr = readNext<UIntPtr>(Buf); | |||
3491 | } | |||
3492 | }; | |||
3493 | } | |||
3494 | ||||
3495 | /// Given a relocation from __compact_unwind, consisting of the RelocationRef | |||
3496 | /// and data being relocated, determine the best base Name and Addend to use for | |||
3497 | /// display purposes. | |||
3498 | /// | |||
3499 | /// 1. An Extern relocation will directly reference a symbol (and the data is | |||
3500 | /// then already an addend), so use that. | |||
3501 | /// 2. Otherwise the data is an offset in the object file's layout; try to find | |||
3502 | // a symbol before it in the same section, and use the offset from there. | |||
3503 | /// 3. Finally, if all that fails, fall back to an offset from the start of the | |||
3504 | /// referenced section. | |||
3505 | static void findUnwindRelocNameAddend(const MachOObjectFile *Obj, | |||
3506 | std::map<uint64_t, SymbolRef> &Symbols, | |||
3507 | const RelocationRef &Reloc, uint64_t Addr, | |||
3508 | StringRef &Name, uint64_t &Addend) { | |||
3509 | if (Reloc.getSymbol() != Obj->symbol_end()) { | |||
3510 | Reloc.getSymbol()->getName(Name); | |||
3511 | Addend = Addr; | |||
3512 | return; | |||
3513 | } | |||
3514 | ||||
3515 | auto RE = Obj->getRelocation(Reloc.getRawDataRefImpl()); | |||
3516 | SectionRef RelocSection = Obj->getRelocationSection(RE); | |||
3517 | ||||
3518 | uint64_t SectionAddr = RelocSection.getAddress(); | |||
3519 | ||||
3520 | auto Sym = Symbols.upper_bound(Addr); | |||
3521 | if (Sym == Symbols.begin()) { | |||
3522 | // The first symbol in the object is after this reference, the best we can | |||
3523 | // do is section-relative notation. | |||
3524 | RelocSection.getName(Name); | |||
3525 | Addend = Addr - SectionAddr; | |||
3526 | return; | |||
3527 | } | |||
3528 | ||||
3529 | // Go back one so that SymbolAddress <= Addr. | |||
3530 | --Sym; | |||
3531 | ||||
3532 | section_iterator SymSection = Obj->section_end(); | |||
3533 | Sym->second.getSection(SymSection); | |||
3534 | if (RelocSection == *SymSection) { | |||
3535 | // There's a valid symbol in the same section before this reference. | |||
3536 | Sym->second.getName(Name); | |||
3537 | Addend = Addr - Sym->first; | |||
3538 | return; | |||
3539 | } | |||
3540 | ||||
3541 | // There is a symbol before this reference, but it's in a different | |||
3542 | // section. Probably not helpful to mention it, so use the section name. | |||
3543 | RelocSection.getName(Name); | |||
3544 | Addend = Addr - SectionAddr; | |||
3545 | } | |||
3546 | ||||
3547 | static void printUnwindRelocDest(const MachOObjectFile *Obj, | |||
3548 | std::map<uint64_t, SymbolRef> &Symbols, | |||
3549 | const RelocationRef &Reloc, uint64_t Addr) { | |||
3550 | StringRef Name; | |||
3551 | uint64_t Addend; | |||
3552 | ||||
3553 | if (!Reloc.getObjectFile()) | |||
3554 | return; | |||
3555 | ||||
3556 | findUnwindRelocNameAddend(Obj, Symbols, Reloc, Addr, Name, Addend); | |||
3557 | ||||
3558 | outs() << Name; | |||
3559 | if (Addend) | |||
3560 | outs() << " + " << format("0x%" PRIx64"l" "x", Addend); | |||
3561 | } | |||
3562 | ||||
3563 | static void | |||
3564 | printMachOCompactUnwindSection(const MachOObjectFile *Obj, | |||
3565 | std::map<uint64_t, SymbolRef> &Symbols, | |||
3566 | const SectionRef &CompactUnwind) { | |||
3567 | ||||
3568 | assert(Obj->isLittleEndian() &&((Obj->isLittleEndian() && "There should not be a big-endian .o with __compact_unwind" ) ? static_cast<void> (0) : __assert_fail ("Obj->isLittleEndian() && \"There should not be a big-endian .o with __compact_unwind\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3569, __PRETTY_FUNCTION__)) | |||
3569 | "There should not be a big-endian .o with __compact_unwind")((Obj->isLittleEndian() && "There should not be a big-endian .o with __compact_unwind" ) ? static_cast<void> (0) : __assert_fail ("Obj->isLittleEndian() && \"There should not be a big-endian .o with __compact_unwind\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3569, __PRETTY_FUNCTION__)); | |||
3570 | ||||
3571 | bool Is64 = Obj->is64Bit(); | |||
3572 | uint32_t PointerSize = Is64 ? sizeof(uint64_t) : sizeof(uint32_t); | |||
3573 | uint32_t EntrySize = 3 * PointerSize + 2 * sizeof(uint32_t); | |||
3574 | ||||
3575 | StringRef Contents; | |||
3576 | CompactUnwind.getContents(Contents); | |||
3577 | ||||
3578 | SmallVector<CompactUnwindEntry, 4> CompactUnwinds; | |||
3579 | ||||
3580 | // First populate the initial raw offsets, encodings and so on from the entry. | |||
3581 | for (unsigned Offset = 0; Offset < Contents.size(); Offset += EntrySize) { | |||
3582 | CompactUnwindEntry Entry(Contents.data(), Offset, Is64); | |||
3583 | CompactUnwinds.push_back(Entry); | |||
3584 | } | |||
3585 | ||||
3586 | // Next we need to look at the relocations to find out what objects are | |||
3587 | // actually being referred to. | |||
3588 | for (const RelocationRef &Reloc : CompactUnwind.relocations()) { | |||
3589 | uint64_t RelocAddress; | |||
3590 | Reloc.getOffset(RelocAddress); | |||
3591 | ||||
3592 | uint32_t EntryIdx = RelocAddress / EntrySize; | |||
3593 | uint32_t OffsetInEntry = RelocAddress - EntryIdx * EntrySize; | |||
3594 | CompactUnwindEntry &Entry = CompactUnwinds[EntryIdx]; | |||
3595 | ||||
3596 | if (OffsetInEntry == 0) | |||
3597 | Entry.FunctionReloc = Reloc; | |||
3598 | else if (OffsetInEntry == PointerSize + 2 * sizeof(uint32_t)) | |||
3599 | Entry.PersonalityReloc = Reloc; | |||
3600 | else if (OffsetInEntry == 2 * PointerSize + 2 * sizeof(uint32_t)) | |||
3601 | Entry.LSDAReloc = Reloc; | |||
3602 | else | |||
3603 | llvm_unreachable("Unexpected relocation in __compact_unwind section")::llvm::llvm_unreachable_internal("Unexpected relocation in __compact_unwind section" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3603); | |||
3604 | } | |||
3605 | ||||
3606 | // Finally, we're ready to print the data we've gathered. | |||
3607 | outs() << "Contents of __compact_unwind section:\n"; | |||
3608 | for (auto &Entry : CompactUnwinds) { | |||
3609 | outs() << " Entry at offset " | |||
3610 | << format("0x%" PRIx32"x", Entry.OffsetInSection) << ":\n"; | |||
3611 | ||||
3612 | // 1. Start of the region this entry applies to. | |||
3613 | outs() << " start: " << format("0x%" PRIx64"l" "x", | |||
3614 | Entry.FunctionAddr) << ' '; | |||
3615 | printUnwindRelocDest(Obj, Symbols, Entry.FunctionReloc, Entry.FunctionAddr); | |||
3616 | outs() << '\n'; | |||
3617 | ||||
3618 | // 2. Length of the region this entry applies to. | |||
3619 | outs() << " length: " << format("0x%" PRIx32"x", Entry.Length) | |||
3620 | << '\n'; | |||
3621 | // 3. The 32-bit compact encoding. | |||
3622 | outs() << " compact encoding: " | |||
3623 | << format("0x%08" PRIx32"x", Entry.CompactEncoding) << '\n'; | |||
3624 | ||||
3625 | // 4. The personality function, if present. | |||
3626 | if (Entry.PersonalityReloc.getObjectFile()) { | |||
3627 | outs() << " personality function: " | |||
3628 | << format("0x%" PRIx64"l" "x", Entry.PersonalityAddr) << ' '; | |||
3629 | printUnwindRelocDest(Obj, Symbols, Entry.PersonalityReloc, | |||
3630 | Entry.PersonalityAddr); | |||
3631 | outs() << '\n'; | |||
3632 | } | |||
3633 | ||||
3634 | // 5. This entry's language-specific data area. | |||
3635 | if (Entry.LSDAReloc.getObjectFile()) { | |||
3636 | outs() << " LSDA: " << format("0x%" PRIx64"l" "x", | |||
3637 | Entry.LSDAAddr) << ' '; | |||
3638 | printUnwindRelocDest(Obj, Symbols, Entry.LSDAReloc, Entry.LSDAAddr); | |||
3639 | outs() << '\n'; | |||
3640 | } | |||
3641 | } | |||
3642 | } | |||
3643 | ||||
3644 | //===----------------------------------------------------------------------===// | |||
3645 | // __unwind_info section dumping | |||
3646 | //===----------------------------------------------------------------------===// | |||
3647 | ||||
3648 | static void printRegularSecondLevelUnwindPage(const char *PageStart) { | |||
3649 | const char *Pos = PageStart; | |||
3650 | uint32_t Kind = readNext<uint32_t>(Pos); | |||
3651 | (void)Kind; | |||
3652 | assert(Kind == 2 && "kind for a regular 2nd level index should be 2")((Kind == 2 && "kind for a regular 2nd level index should be 2" ) ? static_cast<void> (0) : __assert_fail ("Kind == 2 && \"kind for a regular 2nd level index should be 2\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3652, __PRETTY_FUNCTION__)); | |||
3653 | ||||
3654 | uint16_t EntriesStart = readNext<uint16_t>(Pos); | |||
3655 | uint16_t NumEntries = readNext<uint16_t>(Pos); | |||
3656 | ||||
3657 | Pos = PageStart + EntriesStart; | |||
3658 | for (unsigned i = 0; i < NumEntries; ++i) { | |||
3659 | uint32_t FunctionOffset = readNext<uint32_t>(Pos); | |||
3660 | uint32_t Encoding = readNext<uint32_t>(Pos); | |||
3661 | ||||
3662 | outs() << " [" << i << "]: " | |||
3663 | << "function offset=" << format("0x%08" PRIx32"x", FunctionOffset) | |||
3664 | << ", " | |||
3665 | << "encoding=" << format("0x%08" PRIx32"x", Encoding) << '\n'; | |||
3666 | } | |||
3667 | } | |||
3668 | ||||
3669 | static void printCompressedSecondLevelUnwindPage( | |||
3670 | const char *PageStart, uint32_t FunctionBase, | |||
3671 | const SmallVectorImpl<uint32_t> &CommonEncodings) { | |||
3672 | const char *Pos = PageStart; | |||
3673 | uint32_t Kind = readNext<uint32_t>(Pos); | |||
3674 | (void)Kind; | |||
3675 | assert(Kind == 3 && "kind for a compressed 2nd level index should be 3")((Kind == 3 && "kind for a compressed 2nd level index should be 3" ) ? static_cast<void> (0) : __assert_fail ("Kind == 3 && \"kind for a compressed 2nd level index should be 3\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3675, __PRETTY_FUNCTION__)); | |||
3676 | ||||
3677 | uint16_t EntriesStart = readNext<uint16_t>(Pos); | |||
3678 | uint16_t NumEntries = readNext<uint16_t>(Pos); | |||
3679 | ||||
3680 | uint16_t EncodingsStart = readNext<uint16_t>(Pos); | |||
3681 | readNext<uint16_t>(Pos); | |||
3682 | const auto *PageEncodings = reinterpret_cast<const support::ulittle32_t *>( | |||
3683 | PageStart + EncodingsStart); | |||
3684 | ||||
3685 | Pos = PageStart + EntriesStart; | |||
3686 | for (unsigned i = 0; i < NumEntries; ++i) { | |||
3687 | uint32_t Entry = readNext<uint32_t>(Pos); | |||
3688 | uint32_t FunctionOffset = FunctionBase + (Entry & 0xffffff); | |||
3689 | uint32_t EncodingIdx = Entry >> 24; | |||
3690 | ||||
3691 | uint32_t Encoding; | |||
3692 | if (EncodingIdx < CommonEncodings.size()) | |||
3693 | Encoding = CommonEncodings[EncodingIdx]; | |||
3694 | else | |||
3695 | Encoding = PageEncodings[EncodingIdx - CommonEncodings.size()]; | |||
3696 | ||||
3697 | outs() << " [" << i << "]: " | |||
3698 | << "function offset=" << format("0x%08" PRIx32"x", FunctionOffset) | |||
3699 | << ", " | |||
3700 | << "encoding[" << EncodingIdx | |||
3701 | << "]=" << format("0x%08" PRIx32"x", Encoding) << '\n'; | |||
3702 | } | |||
3703 | } | |||
3704 | ||||
3705 | static void printMachOUnwindInfoSection(const MachOObjectFile *Obj, | |||
3706 | std::map<uint64_t, SymbolRef> &Symbols, | |||
3707 | const SectionRef &UnwindInfo) { | |||
3708 | ||||
3709 | assert(Obj->isLittleEndian() &&((Obj->isLittleEndian() && "There should not be a big-endian .o with __unwind_info" ) ? static_cast<void> (0) : __assert_fail ("Obj->isLittleEndian() && \"There should not be a big-endian .o with __unwind_info\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3710, __PRETTY_FUNCTION__)) | |||
3710 | "There should not be a big-endian .o with __unwind_info")((Obj->isLittleEndian() && "There should not be a big-endian .o with __unwind_info" ) ? static_cast<void> (0) : __assert_fail ("Obj->isLittleEndian() && \"There should not be a big-endian .o with __unwind_info\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3710, __PRETTY_FUNCTION__)); | |||
3711 | ||||
3712 | outs() << "Contents of __unwind_info section:\n"; | |||
3713 | ||||
3714 | StringRef Contents; | |||
3715 | UnwindInfo.getContents(Contents); | |||
3716 | const char *Pos = Contents.data(); | |||
3717 | ||||
3718 | //===---------------------------------- | |||
3719 | // Section header | |||
3720 | //===---------------------------------- | |||
3721 | ||||
3722 | uint32_t Version = readNext<uint32_t>(Pos); | |||
3723 | outs() << " Version: " | |||
3724 | << format("0x%" PRIx32"x", Version) << '\n'; | |||
3725 | assert(Version == 1 && "only understand version 1")((Version == 1 && "only understand version 1") ? static_cast <void> (0) : __assert_fail ("Version == 1 && \"only understand version 1\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3725, __PRETTY_FUNCTION__)); | |||
3726 | ||||
3727 | uint32_t CommonEncodingsStart = readNext<uint32_t>(Pos); | |||
3728 | outs() << " Common encodings array section offset: " | |||
3729 | << format("0x%" PRIx32"x", CommonEncodingsStart) << '\n'; | |||
3730 | uint32_t NumCommonEncodings = readNext<uint32_t>(Pos); | |||
3731 | outs() << " Number of common encodings in array: " | |||
3732 | << format("0x%" PRIx32"x", NumCommonEncodings) << '\n'; | |||
3733 | ||||
3734 | uint32_t PersonalitiesStart = readNext<uint32_t>(Pos); | |||
3735 | outs() << " Personality function array section offset: " | |||
3736 | << format("0x%" PRIx32"x", PersonalitiesStart) << '\n'; | |||
3737 | uint32_t NumPersonalities = readNext<uint32_t>(Pos); | |||
3738 | outs() << " Number of personality functions in array: " | |||
3739 | << format("0x%" PRIx32"x", NumPersonalities) << '\n'; | |||
3740 | ||||
3741 | uint32_t IndicesStart = readNext<uint32_t>(Pos); | |||
3742 | outs() << " Index array section offset: " | |||
3743 | << format("0x%" PRIx32"x", IndicesStart) << '\n'; | |||
3744 | uint32_t NumIndices = readNext<uint32_t>(Pos); | |||
3745 | outs() << " Number of indices in array: " | |||
3746 | << format("0x%" PRIx32"x", NumIndices) << '\n'; | |||
3747 | ||||
3748 | //===---------------------------------- | |||
3749 | // A shared list of common encodings | |||
3750 | //===---------------------------------- | |||
3751 | ||||
3752 | // These occupy indices in the range [0, N] whenever an encoding is referenced | |||
3753 | // from a compressed 2nd level index table. In practice the linker only | |||
3754 | // creates ~128 of these, so that indices are available to embed encodings in | |||
3755 | // the 2nd level index. | |||
3756 | ||||
3757 | SmallVector<uint32_t, 64> CommonEncodings; | |||
3758 | outs() << " Common encodings: (count = " << NumCommonEncodings << ")\n"; | |||
3759 | Pos = Contents.data() + CommonEncodingsStart; | |||
3760 | for (unsigned i = 0; i < NumCommonEncodings; ++i) { | |||
3761 | uint32_t Encoding = readNext<uint32_t>(Pos); | |||
3762 | CommonEncodings.push_back(Encoding); | |||
3763 | ||||
3764 | outs() << " encoding[" << i << "]: " << format("0x%08" PRIx32"x", Encoding) | |||
3765 | << '\n'; | |||
3766 | } | |||
3767 | ||||
3768 | //===---------------------------------- | |||
3769 | // Personality functions used in this executable | |||
3770 | //===---------------------------------- | |||
3771 | ||||
3772 | // There should be only a handful of these (one per source language, | |||
3773 | // roughly). Particularly since they only get 2 bits in the compact encoding. | |||
3774 | ||||
3775 | outs() << " Personality functions: (count = " << NumPersonalities << ")\n"; | |||
3776 | Pos = Contents.data() + PersonalitiesStart; | |||
3777 | for (unsigned i = 0; i < NumPersonalities; ++i) { | |||
3778 | uint32_t PersonalityFn = readNext<uint32_t>(Pos); | |||
3779 | outs() << " personality[" << i + 1 | |||
3780 | << "]: " << format("0x%08" PRIx32"x", PersonalityFn) << '\n'; | |||
3781 | } | |||
3782 | ||||
3783 | //===---------------------------------- | |||
3784 | // The level 1 index entries | |||
3785 | //===---------------------------------- | |||
3786 | ||||
3787 | // These specify an approximate place to start searching for the more detailed | |||
3788 | // information, sorted by PC. | |||
3789 | ||||
3790 | struct IndexEntry { | |||
3791 | uint32_t FunctionOffset; | |||
3792 | uint32_t SecondLevelPageStart; | |||
3793 | uint32_t LSDAStart; | |||
3794 | }; | |||
3795 | ||||
3796 | SmallVector<IndexEntry, 4> IndexEntries; | |||
3797 | ||||
3798 | outs() << " Top level indices: (count = " << NumIndices << ")\n"; | |||
3799 | Pos = Contents.data() + IndicesStart; | |||
3800 | for (unsigned i = 0; i < NumIndices; ++i) { | |||
3801 | IndexEntry Entry; | |||
3802 | ||||
3803 | Entry.FunctionOffset = readNext<uint32_t>(Pos); | |||
3804 | Entry.SecondLevelPageStart = readNext<uint32_t>(Pos); | |||
3805 | Entry.LSDAStart = readNext<uint32_t>(Pos); | |||
3806 | IndexEntries.push_back(Entry); | |||
3807 | ||||
3808 | outs() << " [" << i << "]: " | |||
3809 | << "function offset=" << format("0x%08" PRIx32"x", Entry.FunctionOffset) | |||
3810 | << ", " | |||
3811 | << "2nd level page offset=" | |||
3812 | << format("0x%08" PRIx32"x", Entry.SecondLevelPageStart) << ", " | |||
3813 | << "LSDA offset=" << format("0x%08" PRIx32"x", Entry.LSDAStart) << '\n'; | |||
3814 | } | |||
3815 | ||||
3816 | //===---------------------------------- | |||
3817 | // Next come the LSDA tables | |||
3818 | //===---------------------------------- | |||
3819 | ||||
3820 | // The LSDA layout is rather implicit: it's a contiguous array of entries from | |||
3821 | // the first top-level index's LSDAOffset to the last (sentinel). | |||
3822 | ||||
3823 | outs() << " LSDA descriptors:\n"; | |||
3824 | Pos = Contents.data() + IndexEntries[0].LSDAStart; | |||
3825 | int NumLSDAs = (IndexEntries.back().LSDAStart - IndexEntries[0].LSDAStart) / | |||
3826 | (2 * sizeof(uint32_t)); | |||
3827 | for (int i = 0; i < NumLSDAs; ++i) { | |||
3828 | uint32_t FunctionOffset = readNext<uint32_t>(Pos); | |||
3829 | uint32_t LSDAOffset = readNext<uint32_t>(Pos); | |||
3830 | outs() << " [" << i << "]: " | |||
3831 | << "function offset=" << format("0x%08" PRIx32"x", FunctionOffset) | |||
3832 | << ", " | |||
3833 | << "LSDA offset=" << format("0x%08" PRIx32"x", LSDAOffset) << '\n'; | |||
3834 | } | |||
3835 | ||||
3836 | //===---------------------------------- | |||
3837 | // Finally, the 2nd level indices | |||
3838 | //===---------------------------------- | |||
3839 | ||||
3840 | // Generally these are 4K in size, and have 2 possible forms: | |||
3841 | // + Regular stores up to 511 entries with disparate encodings | |||
3842 | // + Compressed stores up to 1021 entries if few enough compact encoding | |||
3843 | // values are used. | |||
3844 | outs() << " Second level indices:\n"; | |||
3845 | for (unsigned i = 0; i < IndexEntries.size() - 1; ++i) { | |||
3846 | // The final sentinel top-level index has no associated 2nd level page | |||
3847 | if (IndexEntries[i].SecondLevelPageStart == 0) | |||
3848 | break; | |||
3849 | ||||
3850 | outs() << " Second level index[" << i << "]: " | |||
3851 | << "offset in section=" | |||
3852 | << format("0x%08" PRIx32"x", IndexEntries[i].SecondLevelPageStart) | |||
3853 | << ", " | |||
3854 | << "base function offset=" | |||
3855 | << format("0x%08" PRIx32"x", IndexEntries[i].FunctionOffset) << '\n'; | |||
3856 | ||||
3857 | Pos = Contents.data() + IndexEntries[i].SecondLevelPageStart; | |||
3858 | uint32_t Kind = *reinterpret_cast<const support::ulittle32_t *>(Pos); | |||
3859 | if (Kind == 2) | |||
3860 | printRegularSecondLevelUnwindPage(Pos); | |||
3861 | else if (Kind == 3) | |||
3862 | printCompressedSecondLevelUnwindPage(Pos, IndexEntries[i].FunctionOffset, | |||
3863 | CommonEncodings); | |||
3864 | else | |||
3865 | llvm_unreachable("Do not know how to print this kind of 2nd level page")::llvm::llvm_unreachable_internal("Do not know how to print this kind of 2nd level page" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 3865); | |||
3866 | } | |||
3867 | } | |||
3868 | ||||
3869 | void llvm::printMachOUnwindInfo(const MachOObjectFile *Obj) { | |||
3870 | std::map<uint64_t, SymbolRef> Symbols; | |||
3871 | for (const SymbolRef &SymRef : Obj->symbols()) { | |||
3872 | // Discard any undefined or absolute symbols. They're not going to take part | |||
3873 | // in the convenience lookup for unwind info and just take up resources. | |||
3874 | section_iterator Section = Obj->section_end(); | |||
3875 | SymRef.getSection(Section); | |||
3876 | if (Section == Obj->section_end()) | |||
3877 | continue; | |||
3878 | ||||
3879 | uint64_t Addr; | |||
3880 | SymRef.getAddress(Addr); | |||
3881 | Symbols.insert(std::make_pair(Addr, SymRef)); | |||
3882 | } | |||
3883 | ||||
3884 | for (const SectionRef &Section : Obj->sections()) { | |||
3885 | StringRef SectName; | |||
3886 | Section.getName(SectName); | |||
3887 | if (SectName == "__compact_unwind") | |||
3888 | printMachOCompactUnwindSection(Obj, Symbols, Section); | |||
3889 | else if (SectName == "__unwind_info") | |||
3890 | printMachOUnwindInfoSection(Obj, Symbols, Section); | |||
3891 | else if (SectName == "__eh_frame") | |||
3892 | outs() << "llvm-objdump: warning: unhandled __eh_frame section\n"; | |||
3893 | } | |||
3894 | } | |||
3895 | ||||
3896 | static void PrintMachHeader(uint32_t magic, uint32_t cputype, | |||
3897 | uint32_t cpusubtype, uint32_t filetype, | |||
3898 | uint32_t ncmds, uint32_t sizeofcmds, uint32_t flags, | |||
3899 | bool verbose) { | |||
3900 | outs() << "Mach header\n"; | |||
3901 | outs() << " magic cputype cpusubtype caps filetype ncmds " | |||
3902 | "sizeofcmds flags\n"; | |||
3903 | if (verbose) { | |||
3904 | if (magic == MachO::MH_MAGIC) | |||
3905 | outs() << " MH_MAGIC"; | |||
3906 | else if (magic == MachO::MH_MAGIC_64) | |||
3907 | outs() << "MH_MAGIC_64"; | |||
3908 | else | |||
3909 | outs() << format(" 0x%08" PRIx32"x", magic); | |||
3910 | switch (cputype) { | |||
3911 | case MachO::CPU_TYPE_I386: | |||
3912 | outs() << " I386"; | |||
3913 | switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) { | |||
3914 | case MachO::CPU_SUBTYPE_I386_ALL: | |||
3915 | outs() << " ALL"; | |||
3916 | break; | |||
3917 | default: | |||
3918 | outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
3919 | break; | |||
3920 | } | |||
3921 | break; | |||
3922 | case MachO::CPU_TYPE_X86_64: | |||
3923 | outs() << " X86_64"; | |||
3924 | switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) { | |||
3925 | case MachO::CPU_SUBTYPE_X86_64_ALL: | |||
3926 | outs() << " ALL"; | |||
3927 | break; | |||
3928 | case MachO::CPU_SUBTYPE_X86_64_H: | |||
3929 | outs() << " Haswell"; | |||
3930 | break; | |||
3931 | default: | |||
3932 | outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
3933 | break; | |||
3934 | } | |||
3935 | break; | |||
3936 | case MachO::CPU_TYPE_ARM: | |||
3937 | outs() << " ARM"; | |||
3938 | switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) { | |||
3939 | case MachO::CPU_SUBTYPE_ARM_ALL: | |||
3940 | outs() << " ALL"; | |||
3941 | break; | |||
3942 | case MachO::CPU_SUBTYPE_ARM_V4T: | |||
3943 | outs() << " V4T"; | |||
3944 | break; | |||
3945 | case MachO::CPU_SUBTYPE_ARM_V5TEJ: | |||
3946 | outs() << " V5TEJ"; | |||
3947 | break; | |||
3948 | case MachO::CPU_SUBTYPE_ARM_XSCALE: | |||
3949 | outs() << " XSCALE"; | |||
3950 | break; | |||
3951 | case MachO::CPU_SUBTYPE_ARM_V6: | |||
3952 | outs() << " V6"; | |||
3953 | break; | |||
3954 | case MachO::CPU_SUBTYPE_ARM_V6M: | |||
3955 | outs() << " V6M"; | |||
3956 | break; | |||
3957 | case MachO::CPU_SUBTYPE_ARM_V7: | |||
3958 | outs() << " V7"; | |||
3959 | break; | |||
3960 | case MachO::CPU_SUBTYPE_ARM_V7EM: | |||
3961 | outs() << " V7EM"; | |||
3962 | break; | |||
3963 | case MachO::CPU_SUBTYPE_ARM_V7K: | |||
3964 | outs() << " V7K"; | |||
3965 | break; | |||
3966 | case MachO::CPU_SUBTYPE_ARM_V7M: | |||
3967 | outs() << " V7M"; | |||
3968 | break; | |||
3969 | case MachO::CPU_SUBTYPE_ARM_V7S: | |||
3970 | outs() << " V7S"; | |||
3971 | break; | |||
3972 | default: | |||
3973 | outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
3974 | break; | |||
3975 | } | |||
3976 | break; | |||
3977 | case MachO::CPU_TYPE_ARM64: | |||
3978 | outs() << " ARM64"; | |||
3979 | switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) { | |||
3980 | case MachO::CPU_SUBTYPE_ARM64_ALL: | |||
3981 | outs() << " ALL"; | |||
3982 | break; | |||
3983 | default: | |||
3984 | outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
3985 | break; | |||
3986 | } | |||
3987 | break; | |||
3988 | case MachO::CPU_TYPE_POWERPC: | |||
3989 | outs() << " PPC"; | |||
3990 | switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) { | |||
3991 | case MachO::CPU_SUBTYPE_POWERPC_ALL: | |||
3992 | outs() << " ALL"; | |||
3993 | break; | |||
3994 | default: | |||
3995 | outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
3996 | break; | |||
3997 | } | |||
3998 | break; | |||
3999 | case MachO::CPU_TYPE_POWERPC64: | |||
4000 | outs() << " PPC64"; | |||
4001 | switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) { | |||
4002 | case MachO::CPU_SUBTYPE_POWERPC_ALL: | |||
4003 | outs() << " ALL"; | |||
4004 | break; | |||
4005 | default: | |||
4006 | outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
4007 | break; | |||
4008 | } | |||
4009 | break; | |||
4010 | } | |||
4011 | if ((cpusubtype & MachO::CPU_SUBTYPE_MASK) == MachO::CPU_SUBTYPE_LIB64) { | |||
4012 | outs() << " LIB64"; | |||
4013 | } else { | |||
4014 | outs() << format(" 0x%02" PRIx32"x", | |||
4015 | (cpusubtype & MachO::CPU_SUBTYPE_MASK) >> 24); | |||
4016 | } | |||
4017 | switch (filetype) { | |||
4018 | case MachO::MH_OBJECT: | |||
4019 | outs() << " OBJECT"; | |||
4020 | break; | |||
4021 | case MachO::MH_EXECUTE: | |||
4022 | outs() << " EXECUTE"; | |||
4023 | break; | |||
4024 | case MachO::MH_FVMLIB: | |||
4025 | outs() << " FVMLIB"; | |||
4026 | break; | |||
4027 | case MachO::MH_CORE: | |||
4028 | outs() << " CORE"; | |||
4029 | break; | |||
4030 | case MachO::MH_PRELOAD: | |||
4031 | outs() << " PRELOAD"; | |||
4032 | break; | |||
4033 | case MachO::MH_DYLIB: | |||
4034 | outs() << " DYLIB"; | |||
4035 | break; | |||
4036 | case MachO::MH_DYLIB_STUB: | |||
4037 | outs() << " DYLIB_STUB"; | |||
4038 | break; | |||
4039 | case MachO::MH_DYLINKER: | |||
4040 | outs() << " DYLINKER"; | |||
4041 | break; | |||
4042 | case MachO::MH_BUNDLE: | |||
4043 | outs() << " BUNDLE"; | |||
4044 | break; | |||
4045 | case MachO::MH_DSYM: | |||
4046 | outs() << " DSYM"; | |||
4047 | break; | |||
4048 | case MachO::MH_KEXT_BUNDLE: | |||
4049 | outs() << " KEXTBUNDLE"; | |||
4050 | break; | |||
4051 | default: | |||
4052 | outs() << format(" %10u", filetype); | |||
4053 | break; | |||
4054 | } | |||
4055 | outs() << format(" %5u", ncmds); | |||
4056 | outs() << format(" %10u", sizeofcmds); | |||
4057 | uint32_t f = flags; | |||
4058 | if (f & MachO::MH_NOUNDEFS) { | |||
4059 | outs() << " NOUNDEFS"; | |||
4060 | f &= ~MachO::MH_NOUNDEFS; | |||
4061 | } | |||
4062 | if (f & MachO::MH_INCRLINK) { | |||
4063 | outs() << " INCRLINK"; | |||
4064 | f &= ~MachO::MH_INCRLINK; | |||
4065 | } | |||
4066 | if (f & MachO::MH_DYLDLINK) { | |||
4067 | outs() << " DYLDLINK"; | |||
4068 | f &= ~MachO::MH_DYLDLINK; | |||
4069 | } | |||
4070 | if (f & MachO::MH_BINDATLOAD) { | |||
4071 | outs() << " BINDATLOAD"; | |||
4072 | f &= ~MachO::MH_BINDATLOAD; | |||
4073 | } | |||
4074 | if (f & MachO::MH_PREBOUND) { | |||
4075 | outs() << " PREBOUND"; | |||
4076 | f &= ~MachO::MH_PREBOUND; | |||
4077 | } | |||
4078 | if (f & MachO::MH_SPLIT_SEGS) { | |||
4079 | outs() << " SPLIT_SEGS"; | |||
4080 | f &= ~MachO::MH_SPLIT_SEGS; | |||
4081 | } | |||
4082 | if (f & MachO::MH_LAZY_INIT) { | |||
4083 | outs() << " LAZY_INIT"; | |||
4084 | f &= ~MachO::MH_LAZY_INIT; | |||
4085 | } | |||
4086 | if (f & MachO::MH_TWOLEVEL) { | |||
4087 | outs() << " TWOLEVEL"; | |||
4088 | f &= ~MachO::MH_TWOLEVEL; | |||
4089 | } | |||
4090 | if (f & MachO::MH_FORCE_FLAT) { | |||
4091 | outs() << " FORCE_FLAT"; | |||
4092 | f &= ~MachO::MH_FORCE_FLAT; | |||
4093 | } | |||
4094 | if (f & MachO::MH_NOMULTIDEFS) { | |||
4095 | outs() << " NOMULTIDEFS"; | |||
4096 | f &= ~MachO::MH_NOMULTIDEFS; | |||
4097 | } | |||
4098 | if (f & MachO::MH_NOFIXPREBINDING) { | |||
4099 | outs() << " NOFIXPREBINDING"; | |||
4100 | f &= ~MachO::MH_NOFIXPREBINDING; | |||
4101 | } | |||
4102 | if (f & MachO::MH_PREBINDABLE) { | |||
4103 | outs() << " PREBINDABLE"; | |||
4104 | f &= ~MachO::MH_PREBINDABLE; | |||
4105 | } | |||
4106 | if (f & MachO::MH_ALLMODSBOUND) { | |||
4107 | outs() << " ALLMODSBOUND"; | |||
4108 | f &= ~MachO::MH_ALLMODSBOUND; | |||
4109 | } | |||
4110 | if (f & MachO::MH_SUBSECTIONS_VIA_SYMBOLS) { | |||
4111 | outs() << " SUBSECTIONS_VIA_SYMBOLS"; | |||
4112 | f &= ~MachO::MH_SUBSECTIONS_VIA_SYMBOLS; | |||
4113 | } | |||
4114 | if (f & MachO::MH_CANONICAL) { | |||
4115 | outs() << " CANONICAL"; | |||
4116 | f &= ~MachO::MH_CANONICAL; | |||
4117 | } | |||
4118 | if (f & MachO::MH_WEAK_DEFINES) { | |||
4119 | outs() << " WEAK_DEFINES"; | |||
4120 | f &= ~MachO::MH_WEAK_DEFINES; | |||
4121 | } | |||
4122 | if (f & MachO::MH_BINDS_TO_WEAK) { | |||
4123 | outs() << " BINDS_TO_WEAK"; | |||
4124 | f &= ~MachO::MH_BINDS_TO_WEAK; | |||
4125 | } | |||
4126 | if (f & MachO::MH_ALLOW_STACK_EXECUTION) { | |||
4127 | outs() << " ALLOW_STACK_EXECUTION"; | |||
4128 | f &= ~MachO::MH_ALLOW_STACK_EXECUTION; | |||
4129 | } | |||
4130 | if (f & MachO::MH_DEAD_STRIPPABLE_DYLIB) { | |||
4131 | outs() << " DEAD_STRIPPABLE_DYLIB"; | |||
4132 | f &= ~MachO::MH_DEAD_STRIPPABLE_DYLIB; | |||
4133 | } | |||
4134 | if (f & MachO::MH_PIE) { | |||
4135 | outs() << " PIE"; | |||
4136 | f &= ~MachO::MH_PIE; | |||
4137 | } | |||
4138 | if (f & MachO::MH_NO_REEXPORTED_DYLIBS) { | |||
4139 | outs() << " NO_REEXPORTED_DYLIBS"; | |||
4140 | f &= ~MachO::MH_NO_REEXPORTED_DYLIBS; | |||
4141 | } | |||
4142 | if (f & MachO::MH_HAS_TLV_DESCRIPTORS) { | |||
4143 | outs() << " MH_HAS_TLV_DESCRIPTORS"; | |||
4144 | f &= ~MachO::MH_HAS_TLV_DESCRIPTORS; | |||
4145 | } | |||
4146 | if (f & MachO::MH_NO_HEAP_EXECUTION) { | |||
4147 | outs() << " MH_NO_HEAP_EXECUTION"; | |||
4148 | f &= ~MachO::MH_NO_HEAP_EXECUTION; | |||
4149 | } | |||
4150 | if (f & MachO::MH_APP_EXTENSION_SAFE) { | |||
4151 | outs() << " APP_EXTENSION_SAFE"; | |||
4152 | f &= ~MachO::MH_APP_EXTENSION_SAFE; | |||
4153 | } | |||
4154 | if (f != 0 || flags == 0) | |||
4155 | outs() << format(" 0x%08" PRIx32"x", f); | |||
4156 | } else { | |||
4157 | outs() << format(" 0x%08" PRIx32"x", magic); | |||
4158 | outs() << format(" %7d", cputype); | |||
4159 | outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK); | |||
4160 | outs() << format(" 0x%02" PRIx32"x", | |||
4161 | (cpusubtype & MachO::CPU_SUBTYPE_MASK) >> 24); | |||
4162 | outs() << format(" %10u", filetype); | |||
4163 | outs() << format(" %5u", ncmds); | |||
4164 | outs() << format(" %10u", sizeofcmds); | |||
4165 | outs() << format(" 0x%08" PRIx32"x", flags); | |||
4166 | } | |||
4167 | outs() << "\n"; | |||
4168 | } | |||
4169 | ||||
4170 | static void PrintSegmentCommand(uint32_t cmd, uint32_t cmdsize, | |||
4171 | StringRef SegName, uint64_t vmaddr, | |||
4172 | uint64_t vmsize, uint64_t fileoff, | |||
4173 | uint64_t filesize, uint32_t maxprot, | |||
4174 | uint32_t initprot, uint32_t nsects, | |||
4175 | uint32_t flags, uint32_t object_size, | |||
4176 | bool verbose) { | |||
4177 | uint64_t expected_cmdsize; | |||
4178 | if (cmd == MachO::LC_SEGMENT) { | |||
4179 | outs() << " cmd LC_SEGMENT\n"; | |||
4180 | expected_cmdsize = nsects; | |||
4181 | expected_cmdsize *= sizeof(struct MachO::section); | |||
4182 | expected_cmdsize += sizeof(struct MachO::segment_command); | |||
4183 | } else { | |||
4184 | outs() << " cmd LC_SEGMENT_64\n"; | |||
4185 | expected_cmdsize = nsects; | |||
4186 | expected_cmdsize *= sizeof(struct MachO::section_64); | |||
4187 | expected_cmdsize += sizeof(struct MachO::segment_command_64); | |||
4188 | } | |||
4189 | outs() << " cmdsize " << cmdsize; | |||
4190 | if (cmdsize != expected_cmdsize) | |||
4191 | outs() << " Inconsistent size\n"; | |||
4192 | else | |||
4193 | outs() << "\n"; | |||
4194 | outs() << " segname " << SegName << "\n"; | |||
4195 | if (cmd == MachO::LC_SEGMENT_64) { | |||
4196 | outs() << " vmaddr " << format("0x%016" PRIx64"l" "x", vmaddr) << "\n"; | |||
4197 | outs() << " vmsize " << format("0x%016" PRIx64"l" "x", vmsize) << "\n"; | |||
4198 | } else { | |||
4199 | outs() << " vmaddr " << format("0x%08" PRIx64"l" "x", vmaddr) << "\n"; | |||
4200 | outs() << " vmsize " << format("0x%08" PRIx64"l" "x", vmsize) << "\n"; | |||
4201 | } | |||
4202 | outs() << " fileoff " << fileoff; | |||
4203 | if (fileoff > object_size) | |||
4204 | outs() << " (past end of file)\n"; | |||
4205 | else | |||
4206 | outs() << "\n"; | |||
4207 | outs() << " filesize " << filesize; | |||
4208 | if (fileoff + filesize > object_size) | |||
4209 | outs() << " (past end of file)\n"; | |||
4210 | else | |||
4211 | outs() << "\n"; | |||
4212 | if (verbose) { | |||
4213 | if ((maxprot & | |||
4214 | ~(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE | | |||
4215 | MachO::VM_PROT_EXECUTE)) != 0) | |||
4216 | outs() << " maxprot ?" << format("0x%08" PRIx32"x", maxprot) << "\n"; | |||
4217 | else { | |||
4218 | if (maxprot & MachO::VM_PROT_READ) | |||
4219 | outs() << " maxprot r"; | |||
4220 | else | |||
4221 | outs() << " maxprot -"; | |||
4222 | if (maxprot & MachO::VM_PROT_WRITE) | |||
4223 | outs() << "w"; | |||
4224 | else | |||
4225 | outs() << "-"; | |||
4226 | if (maxprot & MachO::VM_PROT_EXECUTE) | |||
4227 | outs() << "x\n"; | |||
4228 | else | |||
4229 | outs() << "-\n"; | |||
4230 | } | |||
4231 | if ((initprot & | |||
4232 | ~(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE | | |||
4233 | MachO::VM_PROT_EXECUTE)) != 0) | |||
4234 | outs() << " initprot ?" << format("0x%08" PRIx32"x", initprot) << "\n"; | |||
4235 | else { | |||
4236 | if (initprot & MachO::VM_PROT_READ) | |||
4237 | outs() << " initprot r"; | |||
4238 | else | |||
4239 | outs() << " initprot -"; | |||
4240 | if (initprot & MachO::VM_PROT_WRITE) | |||
4241 | outs() << "w"; | |||
4242 | else | |||
4243 | outs() << "-"; | |||
4244 | if (initprot & MachO::VM_PROT_EXECUTE) | |||
4245 | outs() << "x\n"; | |||
4246 | else | |||
4247 | outs() << "-\n"; | |||
4248 | } | |||
4249 | } else { | |||
4250 | outs() << " maxprot " << format("0x%08" PRIx32"x", maxprot) << "\n"; | |||
4251 | outs() << " initprot " << format("0x%08" PRIx32"x", initprot) << "\n"; | |||
4252 | } | |||
4253 | outs() << " nsects " << nsects << "\n"; | |||
4254 | if (verbose) { | |||
4255 | outs() << " flags"; | |||
4256 | if (flags == 0) | |||
4257 | outs() << " (none)\n"; | |||
4258 | else { | |||
4259 | if (flags & MachO::SG_HIGHVM) { | |||
4260 | outs() << " HIGHVM"; | |||
4261 | flags &= ~MachO::SG_HIGHVM; | |||
4262 | } | |||
4263 | if (flags & MachO::SG_FVMLIB) { | |||
4264 | outs() << " FVMLIB"; | |||
4265 | flags &= ~MachO::SG_FVMLIB; | |||
4266 | } | |||
4267 | if (flags & MachO::SG_NORELOC) { | |||
4268 | outs() << " NORELOC"; | |||
4269 | flags &= ~MachO::SG_NORELOC; | |||
4270 | } | |||
4271 | if (flags & MachO::SG_PROTECTED_VERSION_1) { | |||
4272 | outs() << " PROTECTED_VERSION_1"; | |||
4273 | flags &= ~MachO::SG_PROTECTED_VERSION_1; | |||
4274 | } | |||
4275 | if (flags) | |||
4276 | outs() << format(" 0x%08" PRIx32"x", flags) << " (unknown flags)\n"; | |||
4277 | else | |||
4278 | outs() << "\n"; | |||
4279 | } | |||
4280 | } else { | |||
4281 | outs() << " flags " << format("0x%" PRIx32"x", flags) << "\n"; | |||
4282 | } | |||
4283 | } | |||
4284 | ||||
4285 | static void PrintSection(const char *sectname, const char *segname, | |||
4286 | uint64_t addr, uint64_t size, uint32_t offset, | |||
4287 | uint32_t align, uint32_t reloff, uint32_t nreloc, | |||
4288 | uint32_t flags, uint32_t reserved1, uint32_t reserved2, | |||
4289 | uint32_t cmd, const char *sg_segname, | |||
4290 | uint32_t filetype, uint32_t object_size, | |||
4291 | bool verbose) { | |||
4292 | outs() << "Section\n"; | |||
4293 | outs() << " sectname " << format("%.16s\n", sectname); | |||
4294 | outs() << " segname " << format("%.16s", segname); | |||
4295 | if (filetype != MachO::MH_OBJECT && strncmp(sg_segname, segname, 16) != 0) | |||
4296 | outs() << " (does not match segment)\n"; | |||
4297 | else | |||
4298 | outs() << "\n"; | |||
4299 | if (cmd == MachO::LC_SEGMENT_64) { | |||
4300 | outs() << " addr " << format("0x%016" PRIx64"l" "x", addr) << "\n"; | |||
4301 | outs() << " size " << format("0x%016" PRIx64"l" "x", size); | |||
4302 | } else { | |||
4303 | outs() << " addr " << format("0x%08" PRIx64"l" "x", addr) << "\n"; | |||
4304 | outs() << " size " << format("0x%08" PRIx64"l" "x", size); | |||
4305 | } | |||
4306 | if ((flags & MachO::S_ZEROFILL) != 0 && offset + size > object_size) | |||
4307 | outs() << " (past end of file)\n"; | |||
4308 | else | |||
4309 | outs() << "\n"; | |||
4310 | outs() << " offset " << offset; | |||
4311 | if (offset > object_size) | |||
4312 | outs() << " (past end of file)\n"; | |||
4313 | else | |||
4314 | outs() << "\n"; | |||
4315 | uint32_t align_shifted = 1 << align; | |||
4316 | outs() << " align 2^" << align << " (" << align_shifted << ")\n"; | |||
4317 | outs() << " reloff " << reloff; | |||
4318 | if (reloff > object_size) | |||
4319 | outs() << " (past end of file)\n"; | |||
4320 | else | |||
4321 | outs() << "\n"; | |||
4322 | outs() << " nreloc " << nreloc; | |||
4323 | if (reloff + nreloc * sizeof(struct MachO::relocation_info) > object_size) | |||
4324 | outs() << " (past end of file)\n"; | |||
4325 | else | |||
4326 | outs() << "\n"; | |||
4327 | uint32_t section_type = flags & MachO::SECTION_TYPE; | |||
4328 | if (verbose) { | |||
4329 | outs() << " type"; | |||
4330 | if (section_type == MachO::S_REGULAR) | |||
4331 | outs() << " S_REGULAR\n"; | |||
4332 | else if (section_type == MachO::S_ZEROFILL) | |||
4333 | outs() << " S_ZEROFILL\n"; | |||
4334 | else if (section_type == MachO::S_CSTRING_LITERALS) | |||
4335 | outs() << " S_CSTRING_LITERALS\n"; | |||
4336 | else if (section_type == MachO::S_4BYTE_LITERALS) | |||
4337 | outs() << " S_4BYTE_LITERALS\n"; | |||
4338 | else if (section_type == MachO::S_8BYTE_LITERALS) | |||
4339 | outs() << " S_8BYTE_LITERALS\n"; | |||
4340 | else if (section_type == MachO::S_16BYTE_LITERALS) | |||
4341 | outs() << " S_16BYTE_LITERALS\n"; | |||
4342 | else if (section_type == MachO::S_LITERAL_POINTERS) | |||
4343 | outs() << " S_LITERAL_POINTERS\n"; | |||
4344 | else if (section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS) | |||
4345 | outs() << " S_NON_LAZY_SYMBOL_POINTERS\n"; | |||
4346 | else if (section_type == MachO::S_LAZY_SYMBOL_POINTERS) | |||
4347 | outs() << " S_LAZY_SYMBOL_POINTERS\n"; | |||
4348 | else if (section_type == MachO::S_SYMBOL_STUBS) | |||
4349 | outs() << " S_SYMBOL_STUBS\n"; | |||
4350 | else if (section_type == MachO::S_MOD_INIT_FUNC_POINTERS) | |||
4351 | outs() << " S_MOD_INIT_FUNC_POINTERS\n"; | |||
4352 | else if (section_type == MachO::S_MOD_TERM_FUNC_POINTERS) | |||
4353 | outs() << " S_MOD_TERM_FUNC_POINTERS\n"; | |||
4354 | else if (section_type == MachO::S_COALESCED) | |||
4355 | outs() << " S_COALESCED\n"; | |||
4356 | else if (section_type == MachO::S_INTERPOSING) | |||
4357 | outs() << " S_INTERPOSING\n"; | |||
4358 | else if (section_type == MachO::S_DTRACE_DOF) | |||
4359 | outs() << " S_DTRACE_DOF\n"; | |||
4360 | else if (section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS) | |||
4361 | outs() << " S_LAZY_DYLIB_SYMBOL_POINTERS\n"; | |||
4362 | else if (section_type == MachO::S_THREAD_LOCAL_REGULAR) | |||
4363 | outs() << " S_THREAD_LOCAL_REGULAR\n"; | |||
4364 | else if (section_type == MachO::S_THREAD_LOCAL_ZEROFILL) | |||
4365 | outs() << " S_THREAD_LOCAL_ZEROFILL\n"; | |||
4366 | else if (section_type == MachO::S_THREAD_LOCAL_VARIABLES) | |||
4367 | outs() << " S_THREAD_LOCAL_VARIABLES\n"; | |||
4368 | else if (section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS) | |||
4369 | outs() << " S_THREAD_LOCAL_VARIABLE_POINTERS\n"; | |||
4370 | else if (section_type == MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS) | |||
4371 | outs() << " S_THREAD_LOCAL_INIT_FUNCTION_POINTERS\n"; | |||
4372 | else | |||
4373 | outs() << format("0x%08" PRIx32"x", section_type) << "\n"; | |||
4374 | outs() << "attributes"; | |||
4375 | uint32_t section_attributes = flags & MachO::SECTION_ATTRIBUTES; | |||
4376 | if (section_attributes & MachO::S_ATTR_PURE_INSTRUCTIONS) | |||
4377 | outs() << " PURE_INSTRUCTIONS"; | |||
4378 | if (section_attributes & MachO::S_ATTR_NO_TOC) | |||
4379 | outs() << " NO_TOC"; | |||
4380 | if (section_attributes & MachO::S_ATTR_STRIP_STATIC_SYMS) | |||
4381 | outs() << " STRIP_STATIC_SYMS"; | |||
4382 | if (section_attributes & MachO::S_ATTR_NO_DEAD_STRIP) | |||
4383 | outs() << " NO_DEAD_STRIP"; | |||
4384 | if (section_attributes & MachO::S_ATTR_LIVE_SUPPORT) | |||
4385 | outs() << " LIVE_SUPPORT"; | |||
4386 | if (section_attributes & MachO::S_ATTR_SELF_MODIFYING_CODE) | |||
4387 | outs() << " SELF_MODIFYING_CODE"; | |||
4388 | if (section_attributes & MachO::S_ATTR_DEBUG) | |||
4389 | outs() << " DEBUG"; | |||
4390 | if (section_attributes & MachO::S_ATTR_SOME_INSTRUCTIONS) | |||
4391 | outs() << " SOME_INSTRUCTIONS"; | |||
4392 | if (section_attributes & MachO::S_ATTR_EXT_RELOC) | |||
4393 | outs() << " EXT_RELOC"; | |||
4394 | if (section_attributes & MachO::S_ATTR_LOC_RELOC) | |||
4395 | outs() << " LOC_RELOC"; | |||
4396 | if (section_attributes == 0) | |||
4397 | outs() << " (none)"; | |||
4398 | outs() << "\n"; | |||
4399 | } else | |||
4400 | outs() << " flags " << format("0x%08" PRIx32"x", flags) << "\n"; | |||
4401 | outs() << " reserved1 " << reserved1; | |||
4402 | if (section_type == MachO::S_SYMBOL_STUBS || | |||
4403 | section_type == MachO::S_LAZY_SYMBOL_POINTERS || | |||
4404 | section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS || | |||
4405 | section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS || | |||
4406 | section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS) | |||
4407 | outs() << " (index into indirect symbol table)\n"; | |||
4408 | else | |||
4409 | outs() << "\n"; | |||
4410 | outs() << " reserved2 " << reserved2; | |||
4411 | if (section_type == MachO::S_SYMBOL_STUBS) | |||
4412 | outs() << " (size of stubs)\n"; | |||
4413 | else | |||
4414 | outs() << "\n"; | |||
4415 | } | |||
4416 | ||||
4417 | static void PrintSymtabLoadCommand(MachO::symtab_command st, bool Is64Bit, | |||
4418 | uint32_t object_size) { | |||
4419 | outs() << " cmd LC_SYMTAB\n"; | |||
4420 | outs() << " cmdsize " << st.cmdsize; | |||
4421 | if (st.cmdsize != sizeof(struct MachO::symtab_command)) | |||
4422 | outs() << " Incorrect size\n"; | |||
4423 | else | |||
4424 | outs() << "\n"; | |||
4425 | outs() << " symoff " << st.symoff; | |||
4426 | if (st.symoff > object_size) | |||
4427 | outs() << " (past end of file)\n"; | |||
4428 | else | |||
4429 | outs() << "\n"; | |||
4430 | outs() << " nsyms " << st.nsyms; | |||
4431 | uint64_t big_size; | |||
4432 | if (Is64Bit) { | |||
4433 | big_size = st.nsyms; | |||
4434 | big_size *= sizeof(struct MachO::nlist_64); | |||
4435 | big_size += st.symoff; | |||
4436 | if (big_size > object_size) | |||
4437 | outs() << " (past end of file)\n"; | |||
4438 | else | |||
4439 | outs() << "\n"; | |||
4440 | } else { | |||
4441 | big_size = st.nsyms; | |||
4442 | big_size *= sizeof(struct MachO::nlist); | |||
4443 | big_size += st.symoff; | |||
4444 | if (big_size > object_size) | |||
4445 | outs() << " (past end of file)\n"; | |||
4446 | else | |||
4447 | outs() << "\n"; | |||
4448 | } | |||
4449 | outs() << " stroff " << st.stroff; | |||
4450 | if (st.stroff > object_size) | |||
4451 | outs() << " (past end of file)\n"; | |||
4452 | else | |||
4453 | outs() << "\n"; | |||
4454 | outs() << " strsize " << st.strsize; | |||
4455 | big_size = st.stroff; | |||
4456 | big_size += st.strsize; | |||
4457 | if (big_size > object_size) | |||
4458 | outs() << " (past end of file)\n"; | |||
4459 | else | |||
4460 | outs() << "\n"; | |||
4461 | } | |||
4462 | ||||
4463 | static void PrintDysymtabLoadCommand(MachO::dysymtab_command dyst, | |||
4464 | uint32_t nsyms, uint32_t object_size, | |||
4465 | bool Is64Bit) { | |||
4466 | outs() << " cmd LC_DYSYMTAB\n"; | |||
4467 | outs() << " cmdsize " << dyst.cmdsize; | |||
4468 | if (dyst.cmdsize != sizeof(struct MachO::dysymtab_command)) | |||
4469 | outs() << " Incorrect size\n"; | |||
4470 | else | |||
4471 | outs() << "\n"; | |||
4472 | outs() << " ilocalsym " << dyst.ilocalsym; | |||
4473 | if (dyst.ilocalsym > nsyms) | |||
4474 | outs() << " (greater than the number of symbols)\n"; | |||
4475 | else | |||
4476 | outs() << "\n"; | |||
4477 | outs() << " nlocalsym " << dyst.nlocalsym; | |||
4478 | uint64_t big_size; | |||
4479 | big_size = dyst.ilocalsym; | |||
4480 | big_size += dyst.nlocalsym; | |||
4481 | if (big_size > nsyms) | |||
4482 | outs() << " (past the end of the symbol table)\n"; | |||
4483 | else | |||
4484 | outs() << "\n"; | |||
4485 | outs() << " iextdefsym " << dyst.iextdefsym; | |||
4486 | if (dyst.iextdefsym > nsyms) | |||
4487 | outs() << " (greater than the number of symbols)\n"; | |||
4488 | else | |||
4489 | outs() << "\n"; | |||
4490 | outs() << " nextdefsym " << dyst.nextdefsym; | |||
4491 | big_size = dyst.iextdefsym; | |||
4492 | big_size += dyst.nextdefsym; | |||
4493 | if (big_size > nsyms) | |||
4494 | outs() << " (past the end of the symbol table)\n"; | |||
4495 | else | |||
4496 | outs() << "\n"; | |||
4497 | outs() << " iundefsym " << dyst.iundefsym; | |||
4498 | if (dyst.iundefsym > nsyms) | |||
4499 | outs() << " (greater than the number of symbols)\n"; | |||
4500 | else | |||
4501 | outs() << "\n"; | |||
4502 | outs() << " nundefsym " << dyst.nundefsym; | |||
4503 | big_size = dyst.iundefsym; | |||
4504 | big_size += dyst.nundefsym; | |||
4505 | if (big_size > nsyms) | |||
4506 | outs() << " (past the end of the symbol table)\n"; | |||
4507 | else | |||
4508 | outs() << "\n"; | |||
4509 | outs() << " tocoff " << dyst.tocoff; | |||
4510 | if (dyst.tocoff > object_size) | |||
4511 | outs() << " (past end of file)\n"; | |||
4512 | else | |||
4513 | outs() << "\n"; | |||
4514 | outs() << " ntoc " << dyst.ntoc; | |||
4515 | big_size = dyst.ntoc; | |||
4516 | big_size *= sizeof(struct MachO::dylib_table_of_contents); | |||
4517 | big_size += dyst.tocoff; | |||
4518 | if (big_size > object_size) | |||
4519 | outs() << " (past end of file)\n"; | |||
4520 | else | |||
4521 | outs() << "\n"; | |||
4522 | outs() << " modtaboff " << dyst.modtaboff; | |||
4523 | if (dyst.modtaboff > object_size) | |||
4524 | outs() << " (past end of file)\n"; | |||
4525 | else | |||
4526 | outs() << "\n"; | |||
4527 | outs() << " nmodtab " << dyst.nmodtab; | |||
4528 | uint64_t modtabend; | |||
4529 | if (Is64Bit) { | |||
4530 | modtabend = dyst.nmodtab; | |||
4531 | modtabend *= sizeof(struct MachO::dylib_module_64); | |||
4532 | modtabend += dyst.modtaboff; | |||
4533 | } else { | |||
4534 | modtabend = dyst.nmodtab; | |||
4535 | modtabend *= sizeof(struct MachO::dylib_module); | |||
4536 | modtabend += dyst.modtaboff; | |||
4537 | } | |||
4538 | if (modtabend > object_size) | |||
4539 | outs() << " (past end of file)\n"; | |||
4540 | else | |||
4541 | outs() << "\n"; | |||
4542 | outs() << " extrefsymoff " << dyst.extrefsymoff; | |||
4543 | if (dyst.extrefsymoff > object_size) | |||
4544 | outs() << " (past end of file)\n"; | |||
4545 | else | |||
4546 | outs() << "\n"; | |||
4547 | outs() << " nextrefsyms " << dyst.nextrefsyms; | |||
4548 | big_size = dyst.nextrefsyms; | |||
4549 | big_size *= sizeof(struct MachO::dylib_reference); | |||
4550 | big_size += dyst.extrefsymoff; | |||
4551 | if (big_size > object_size) | |||
4552 | outs() << " (past end of file)\n"; | |||
4553 | else | |||
4554 | outs() << "\n"; | |||
4555 | outs() << " indirectsymoff " << dyst.indirectsymoff; | |||
4556 | if (dyst.indirectsymoff > object_size) | |||
4557 | outs() << " (past end of file)\n"; | |||
4558 | else | |||
4559 | outs() << "\n"; | |||
4560 | outs() << " nindirectsyms " << dyst.nindirectsyms; | |||
4561 | big_size = dyst.nindirectsyms; | |||
4562 | big_size *= sizeof(uint32_t); | |||
4563 | big_size += dyst.indirectsymoff; | |||
4564 | if (big_size > object_size) | |||
4565 | outs() << " (past end of file)\n"; | |||
4566 | else | |||
4567 | outs() << "\n"; | |||
4568 | outs() << " extreloff " << dyst.extreloff; | |||
4569 | if (dyst.extreloff > object_size) | |||
4570 | outs() << " (past end of file)\n"; | |||
4571 | else | |||
4572 | outs() << "\n"; | |||
4573 | outs() << " nextrel " << dyst.nextrel; | |||
4574 | big_size = dyst.nextrel; | |||
4575 | big_size *= sizeof(struct MachO::relocation_info); | |||
4576 | big_size += dyst.extreloff; | |||
4577 | if (big_size > object_size) | |||
4578 | outs() << " (past end of file)\n"; | |||
4579 | else | |||
4580 | outs() << "\n"; | |||
4581 | outs() << " locreloff " << dyst.locreloff; | |||
4582 | if (dyst.locreloff > object_size) | |||
4583 | outs() << " (past end of file)\n"; | |||
4584 | else | |||
4585 | outs() << "\n"; | |||
4586 | outs() << " nlocrel " << dyst.nlocrel; | |||
4587 | big_size = dyst.nlocrel; | |||
4588 | big_size *= sizeof(struct MachO::relocation_info); | |||
4589 | big_size += dyst.locreloff; | |||
4590 | if (big_size > object_size) | |||
4591 | outs() << " (past end of file)\n"; | |||
4592 | else | |||
4593 | outs() << "\n"; | |||
4594 | } | |||
4595 | ||||
4596 | static void PrintDyldInfoLoadCommand(MachO::dyld_info_command dc, | |||
4597 | uint32_t object_size) { | |||
4598 | if (dc.cmd == MachO::LC_DYLD_INFO) | |||
4599 | outs() << " cmd LC_DYLD_INFO\n"; | |||
4600 | else | |||
4601 | outs() << " cmd LC_DYLD_INFO_ONLY\n"; | |||
4602 | outs() << " cmdsize " << dc.cmdsize; | |||
4603 | if (dc.cmdsize != sizeof(struct MachO::dyld_info_command)) | |||
4604 | outs() << " Incorrect size\n"; | |||
4605 | else | |||
4606 | outs() << "\n"; | |||
4607 | outs() << " rebase_off " << dc.rebase_off; | |||
4608 | if (dc.rebase_off > object_size) | |||
4609 | outs() << " (past end of file)\n"; | |||
4610 | else | |||
4611 | outs() << "\n"; | |||
4612 | outs() << " rebase_size " << dc.rebase_size; | |||
4613 | uint64_t big_size; | |||
4614 | big_size = dc.rebase_off; | |||
4615 | big_size += dc.rebase_size; | |||
4616 | if (big_size > object_size) | |||
4617 | outs() << " (past end of file)\n"; | |||
4618 | else | |||
4619 | outs() << "\n"; | |||
4620 | outs() << " bind_off " << dc.bind_off; | |||
4621 | if (dc.bind_off > object_size) | |||
4622 | outs() << " (past end of file)\n"; | |||
4623 | else | |||
4624 | outs() << "\n"; | |||
4625 | outs() << " bind_size " << dc.bind_size; | |||
4626 | big_size = dc.bind_off; | |||
4627 | big_size += dc.bind_size; | |||
4628 | if (big_size > object_size) | |||
4629 | outs() << " (past end of file)\n"; | |||
4630 | else | |||
4631 | outs() << "\n"; | |||
4632 | outs() << " weak_bind_off " << dc.weak_bind_off; | |||
4633 | if (dc.weak_bind_off > object_size) | |||
4634 | outs() << " (past end of file)\n"; | |||
4635 | else | |||
4636 | outs() << "\n"; | |||
4637 | outs() << " weak_bind_size " << dc.weak_bind_size; | |||
4638 | big_size = dc.weak_bind_off; | |||
4639 | big_size += dc.weak_bind_size; | |||
4640 | if (big_size > object_size) | |||
4641 | outs() << " (past end of file)\n"; | |||
4642 | else | |||
4643 | outs() << "\n"; | |||
4644 | outs() << " lazy_bind_off " << dc.lazy_bind_off; | |||
4645 | if (dc.lazy_bind_off > object_size) | |||
4646 | outs() << " (past end of file)\n"; | |||
4647 | else | |||
4648 | outs() << "\n"; | |||
4649 | outs() << " lazy_bind_size " << dc.lazy_bind_size; | |||
4650 | big_size = dc.lazy_bind_off; | |||
4651 | big_size += dc.lazy_bind_size; | |||
4652 | if (big_size > object_size) | |||
4653 | outs() << " (past end of file)\n"; | |||
4654 | else | |||
4655 | outs() << "\n"; | |||
4656 | outs() << " export_off " << dc.export_off; | |||
4657 | if (dc.export_off > object_size) | |||
4658 | outs() << " (past end of file)\n"; | |||
4659 | else | |||
4660 | outs() << "\n"; | |||
4661 | outs() << " export_size " << dc.export_size; | |||
4662 | big_size = dc.export_off; | |||
4663 | big_size += dc.export_size; | |||
4664 | if (big_size > object_size) | |||
4665 | outs() << " (past end of file)\n"; | |||
4666 | else | |||
4667 | outs() << "\n"; | |||
4668 | } | |||
4669 | ||||
4670 | static void PrintDyldLoadCommand(MachO::dylinker_command dyld, | |||
4671 | const char *Ptr) { | |||
4672 | if (dyld.cmd == MachO::LC_ID_DYLINKER) | |||
4673 | outs() << " cmd LC_ID_DYLINKER\n"; | |||
4674 | else if (dyld.cmd == MachO::LC_LOAD_DYLINKER) | |||
4675 | outs() << " cmd LC_LOAD_DYLINKER\n"; | |||
4676 | else if (dyld.cmd == MachO::LC_DYLD_ENVIRONMENT) | |||
4677 | outs() << " cmd LC_DYLD_ENVIRONMENT\n"; | |||
4678 | else | |||
4679 | outs() << " cmd ?(" << dyld.cmd << ")\n"; | |||
4680 | outs() << " cmdsize " << dyld.cmdsize; | |||
4681 | if (dyld.cmdsize < sizeof(struct MachO::dylinker_command)) | |||
4682 | outs() << " Incorrect size\n"; | |||
4683 | else | |||
4684 | outs() << "\n"; | |||
4685 | if (dyld.name >= dyld.cmdsize) | |||
4686 | outs() << " name ?(bad offset " << dyld.name << ")\n"; | |||
4687 | else { | |||
4688 | const char *P = (const char *)(Ptr) + dyld.name; | |||
4689 | outs() << " name " << P << " (offset " << dyld.name << ")\n"; | |||
4690 | } | |||
4691 | } | |||
4692 | ||||
4693 | static void PrintUuidLoadCommand(MachO::uuid_command uuid) { | |||
4694 | outs() << " cmd LC_UUID\n"; | |||
4695 | outs() << " cmdsize " << uuid.cmdsize; | |||
4696 | if (uuid.cmdsize != sizeof(struct MachO::uuid_command)) | |||
4697 | outs() << " Incorrect size\n"; | |||
4698 | else | |||
4699 | outs() << "\n"; | |||
4700 | outs() << " uuid "; | |||
4701 | outs() << format("%02" PRIX32"X", uuid.uuid[0]); | |||
4702 | outs() << format("%02" PRIX32"X", uuid.uuid[1]); | |||
4703 | outs() << format("%02" PRIX32"X", uuid.uuid[2]); | |||
4704 | outs() << format("%02" PRIX32"X", uuid.uuid[3]); | |||
4705 | outs() << "-"; | |||
4706 | outs() << format("%02" PRIX32"X", uuid.uuid[4]); | |||
4707 | outs() << format("%02" PRIX32"X", uuid.uuid[5]); | |||
4708 | outs() << "-"; | |||
4709 | outs() << format("%02" PRIX32"X", uuid.uuid[6]); | |||
4710 | outs() << format("%02" PRIX32"X", uuid.uuid[7]); | |||
4711 | outs() << "-"; | |||
4712 | outs() << format("%02" PRIX32"X", uuid.uuid[8]); | |||
4713 | outs() << format("%02" PRIX32"X", uuid.uuid[9]); | |||
4714 | outs() << "-"; | |||
4715 | outs() << format("%02" PRIX32"X", uuid.uuid[10]); | |||
4716 | outs() << format("%02" PRIX32"X", uuid.uuid[11]); | |||
4717 | outs() << format("%02" PRIX32"X", uuid.uuid[12]); | |||
4718 | outs() << format("%02" PRIX32"X", uuid.uuid[13]); | |||
4719 | outs() << format("%02" PRIX32"X", uuid.uuid[14]); | |||
4720 | outs() << format("%02" PRIX32"X", uuid.uuid[15]); | |||
4721 | outs() << "\n"; | |||
4722 | } | |||
4723 | ||||
4724 | static void PrintRpathLoadCommand(MachO::rpath_command rpath, const char *Ptr) { | |||
4725 | outs() << " cmd LC_RPATH\n"; | |||
4726 | outs() << " cmdsize " << rpath.cmdsize; | |||
4727 | if (rpath.cmdsize < sizeof(struct MachO::rpath_command)) | |||
4728 | outs() << " Incorrect size\n"; | |||
4729 | else | |||
4730 | outs() << "\n"; | |||
4731 | if (rpath.path >= rpath.cmdsize) | |||
4732 | outs() << " path ?(bad offset " << rpath.path << ")\n"; | |||
4733 | else { | |||
4734 | const char *P = (const char *)(Ptr) + rpath.path; | |||
4735 | outs() << " path " << P << " (offset " << rpath.path << ")\n"; | |||
4736 | } | |||
4737 | } | |||
4738 | ||||
4739 | static void PrintVersionMinLoadCommand(MachO::version_min_command vd) { | |||
4740 | if (vd.cmd == MachO::LC_VERSION_MIN_MACOSX) | |||
4741 | outs() << " cmd LC_VERSION_MIN_MACOSX\n"; | |||
4742 | else if (vd.cmd == MachO::LC_VERSION_MIN_IPHONEOS) | |||
4743 | outs() << " cmd LC_VERSION_MIN_IPHONEOS\n"; | |||
4744 | else | |||
4745 | outs() << " cmd " << vd.cmd << " (?)\n"; | |||
4746 | outs() << " cmdsize " << vd.cmdsize; | |||
4747 | if (vd.cmdsize != sizeof(struct MachO::version_min_command)) | |||
4748 | outs() << " Incorrect size\n"; | |||
4749 | else | |||
4750 | outs() << "\n"; | |||
4751 | outs() << " version " << ((vd.version >> 16) & 0xffff) << "." | |||
4752 | << ((vd.version >> 8) & 0xff); | |||
4753 | if ((vd.version & 0xff) != 0) | |||
4754 | outs() << "." << (vd.version & 0xff); | |||
4755 | outs() << "\n"; | |||
4756 | if (vd.sdk == 0) | |||
4757 | outs() << " sdk n/a"; | |||
4758 | else { | |||
4759 | outs() << " sdk " << ((vd.sdk >> 16) & 0xffff) << "." | |||
4760 | << ((vd.sdk >> 8) & 0xff); | |||
4761 | } | |||
4762 | if ((vd.sdk & 0xff) != 0) | |||
4763 | outs() << "." << (vd.sdk & 0xff); | |||
4764 | outs() << "\n"; | |||
4765 | } | |||
4766 | ||||
4767 | static void PrintSourceVersionCommand(MachO::source_version_command sd) { | |||
4768 | outs() << " cmd LC_SOURCE_VERSION\n"; | |||
4769 | outs() << " cmdsize " << sd.cmdsize; | |||
4770 | if (sd.cmdsize != sizeof(struct MachO::source_version_command)) | |||
4771 | outs() << " Incorrect size\n"; | |||
4772 | else | |||
4773 | outs() << "\n"; | |||
4774 | uint64_t a = (sd.version >> 40) & 0xffffff; | |||
4775 | uint64_t b = (sd.version >> 30) & 0x3ff; | |||
4776 | uint64_t c = (sd.version >> 20) & 0x3ff; | |||
4777 | uint64_t d = (sd.version >> 10) & 0x3ff; | |||
4778 | uint64_t e = sd.version & 0x3ff; | |||
4779 | outs() << " version " << a << "." << b; | |||
4780 | if (e != 0) | |||
4781 | outs() << "." << c << "." << d << "." << e; | |||
4782 | else if (d != 0) | |||
4783 | outs() << "." << c << "." << d; | |||
4784 | else if (c != 0) | |||
4785 | outs() << "." << c; | |||
4786 | outs() << "\n"; | |||
4787 | } | |||
4788 | ||||
4789 | static void PrintEntryPointCommand(MachO::entry_point_command ep) { | |||
4790 | outs() << " cmd LC_MAIN\n"; | |||
4791 | outs() << " cmdsize " << ep.cmdsize; | |||
4792 | if (ep.cmdsize != sizeof(struct MachO::entry_point_command)) | |||
4793 | outs() << " Incorrect size\n"; | |||
4794 | else | |||
4795 | outs() << "\n"; | |||
4796 | outs() << " entryoff " << ep.entryoff << "\n"; | |||
4797 | outs() << " stacksize " << ep.stacksize << "\n"; | |||
4798 | } | |||
4799 | ||||
4800 | static void PrintEncryptionInfoCommand(MachO::encryption_info_command ec, | |||
4801 | uint32_t object_size) { | |||
4802 | outs() << " cmd LC_ENCRYPTION_INFO\n"; | |||
4803 | outs() << " cmdsize " << ec.cmdsize; | |||
4804 | if (ec.cmdsize != sizeof(struct MachO::encryption_info_command)) | |||
4805 | outs() << " Incorrect size\n"; | |||
4806 | else | |||
4807 | outs() << "\n"; | |||
4808 | outs() << " cryptoff " << ec.cryptoff; | |||
4809 | if (ec.cryptoff > object_size) | |||
4810 | outs() << " (past end of file)\n"; | |||
4811 | else | |||
4812 | outs() << "\n"; | |||
4813 | outs() << " cryptsize " << ec.cryptsize; | |||
4814 | if (ec.cryptsize > object_size) | |||
4815 | outs() << " (past end of file)\n"; | |||
4816 | else | |||
4817 | outs() << "\n"; | |||
4818 | outs() << " cryptid " << ec.cryptid << "\n"; | |||
4819 | } | |||
4820 | ||||
4821 | static void PrintEncryptionInfoCommand64(MachO::encryption_info_command_64 ec, | |||
4822 | uint32_t object_size) { | |||
4823 | outs() << " cmd LC_ENCRYPTION_INFO_64\n"; | |||
4824 | outs() << " cmdsize " << ec.cmdsize; | |||
4825 | if (ec.cmdsize != sizeof(struct MachO::encryption_info_command_64)) | |||
4826 | outs() << " Incorrect size\n"; | |||
4827 | else | |||
4828 | outs() << "\n"; | |||
4829 | outs() << " cryptoff " << ec.cryptoff; | |||
4830 | if (ec.cryptoff > object_size) | |||
4831 | outs() << " (past end of file)\n"; | |||
4832 | else | |||
4833 | outs() << "\n"; | |||
4834 | outs() << " cryptsize " << ec.cryptsize; | |||
4835 | if (ec.cryptsize > object_size) | |||
4836 | outs() << " (past end of file)\n"; | |||
4837 | else | |||
4838 | outs() << "\n"; | |||
4839 | outs() << " cryptid " << ec.cryptid << "\n"; | |||
4840 | outs() << " pad " << ec.pad << "\n"; | |||
4841 | } | |||
4842 | ||||
4843 | static void PrintLinkerOptionCommand(MachO::linker_option_command lo, | |||
4844 | const char *Ptr) { | |||
4845 | outs() << " cmd LC_LINKER_OPTION\n"; | |||
4846 | outs() << " cmdsize " << lo.cmdsize; | |||
4847 | if (lo.cmdsize < sizeof(struct MachO::linker_option_command)) | |||
4848 | outs() << " Incorrect size\n"; | |||
4849 | else | |||
4850 | outs() << "\n"; | |||
4851 | outs() << " count " << lo.count << "\n"; | |||
4852 | const char *string = Ptr + sizeof(struct MachO::linker_option_command); | |||
4853 | uint32_t left = lo.cmdsize - sizeof(struct MachO::linker_option_command); | |||
4854 | uint32_t i = 0; | |||
4855 | while (left > 0) { | |||
4856 | while (*string == '\0' && left > 0) { | |||
4857 | string++; | |||
4858 | left--; | |||
4859 | } | |||
4860 | if (left > 0) { | |||
4861 | i++; | |||
4862 | outs() << " string #" << i << " " << format("%.*s\n", left, string); | |||
4863 | uint32_t NullPos = StringRef(string, left).find('\0'); | |||
4864 | uint32_t len = std::min(NullPos, left) + 1; | |||
4865 | string += len; | |||
4866 | left -= len; | |||
4867 | } | |||
4868 | } | |||
4869 | if (lo.count != i) | |||
4870 | outs() << " count " << lo.count << " does not match number of strings " | |||
4871 | << i << "\n"; | |||
4872 | } | |||
4873 | ||||
4874 | static void PrintSubFrameworkCommand(MachO::sub_framework_command sub, | |||
4875 | const char *Ptr) { | |||
4876 | outs() << " cmd LC_SUB_FRAMEWORK\n"; | |||
4877 | outs() << " cmdsize " << sub.cmdsize; | |||
4878 | if (sub.cmdsize < sizeof(struct MachO::sub_framework_command)) | |||
4879 | outs() << " Incorrect size\n"; | |||
4880 | else | |||
4881 | outs() << "\n"; | |||
4882 | if (sub.umbrella < sub.cmdsize) { | |||
4883 | const char *P = Ptr + sub.umbrella; | |||
4884 | outs() << " umbrella " << P << " (offset " << sub.umbrella << ")\n"; | |||
4885 | } else { | |||
4886 | outs() << " umbrella ?(bad offset " << sub.umbrella << ")\n"; | |||
4887 | } | |||
4888 | } | |||
4889 | ||||
4890 | static void PrintSubUmbrellaCommand(MachO::sub_umbrella_command sub, | |||
4891 | const char *Ptr) { | |||
4892 | outs() << " cmd LC_SUB_UMBRELLA\n"; | |||
4893 | outs() << " cmdsize " << sub.cmdsize; | |||
4894 | if (sub.cmdsize < sizeof(struct MachO::sub_umbrella_command)) | |||
4895 | outs() << " Incorrect size\n"; | |||
4896 | else | |||
4897 | outs() << "\n"; | |||
4898 | if (sub.sub_umbrella < sub.cmdsize) { | |||
4899 | const char *P = Ptr + sub.sub_umbrella; | |||
4900 | outs() << " sub_umbrella " << P << " (offset " << sub.sub_umbrella << ")\n"; | |||
4901 | } else { | |||
4902 | outs() << " sub_umbrella ?(bad offset " << sub.sub_umbrella << ")\n"; | |||
4903 | } | |||
4904 | } | |||
4905 | ||||
4906 | static void PrintSubLibraryCommand(MachO::sub_library_command sub, | |||
4907 | const char *Ptr) { | |||
4908 | outs() << " cmd LC_SUB_LIBRARY\n"; | |||
4909 | outs() << " cmdsize " << sub.cmdsize; | |||
4910 | if (sub.cmdsize < sizeof(struct MachO::sub_library_command)) | |||
4911 | outs() << " Incorrect size\n"; | |||
4912 | else | |||
4913 | outs() << "\n"; | |||
4914 | if (sub.sub_library < sub.cmdsize) { | |||
4915 | const char *P = Ptr + sub.sub_library; | |||
4916 | outs() << " sub_library " << P << " (offset " << sub.sub_library << ")\n"; | |||
4917 | } else { | |||
4918 | outs() << " sub_library ?(bad offset " << sub.sub_library << ")\n"; | |||
4919 | } | |||
4920 | } | |||
4921 | ||||
4922 | static void PrintSubClientCommand(MachO::sub_client_command sub, | |||
4923 | const char *Ptr) { | |||
4924 | outs() << " cmd LC_SUB_CLIENT\n"; | |||
4925 | outs() << " cmdsize " << sub.cmdsize; | |||
4926 | if (sub.cmdsize < sizeof(struct MachO::sub_client_command)) | |||
4927 | outs() << " Incorrect size\n"; | |||
4928 | else | |||
4929 | outs() << "\n"; | |||
4930 | if (sub.client < sub.cmdsize) { | |||
4931 | const char *P = Ptr + sub.client; | |||
4932 | outs() << " client " << P << " (offset " << sub.client << ")\n"; | |||
4933 | } else { | |||
4934 | outs() << " client ?(bad offset " << sub.client << ")\n"; | |||
4935 | } | |||
4936 | } | |||
4937 | ||||
4938 | static void PrintRoutinesCommand(MachO::routines_command r) { | |||
4939 | outs() << " cmd LC_ROUTINES\n"; | |||
4940 | outs() << " cmdsize " << r.cmdsize; | |||
4941 | if (r.cmdsize != sizeof(struct MachO::routines_command)) | |||
4942 | outs() << " Incorrect size\n"; | |||
4943 | else | |||
4944 | outs() << "\n"; | |||
4945 | outs() << " init_address " << format("0x%08" PRIx32"x", r.init_address) << "\n"; | |||
4946 | outs() << " init_module " << r.init_module << "\n"; | |||
4947 | outs() << " reserved1 " << r.reserved1 << "\n"; | |||
4948 | outs() << " reserved2 " << r.reserved2 << "\n"; | |||
4949 | outs() << " reserved3 " << r.reserved3 << "\n"; | |||
4950 | outs() << " reserved4 " << r.reserved4 << "\n"; | |||
4951 | outs() << " reserved5 " << r.reserved5 << "\n"; | |||
4952 | outs() << " reserved6 " << r.reserved6 << "\n"; | |||
4953 | } | |||
4954 | ||||
4955 | static void PrintRoutinesCommand64(MachO::routines_command_64 r) { | |||
4956 | outs() << " cmd LC_ROUTINES_64\n"; | |||
4957 | outs() << " cmdsize " << r.cmdsize; | |||
4958 | if (r.cmdsize != sizeof(struct MachO::routines_command_64)) | |||
4959 | outs() << " Incorrect size\n"; | |||
4960 | else | |||
4961 | outs() << "\n"; | |||
4962 | outs() << " init_address " << format("0x%016" PRIx64"l" "x", r.init_address) << "\n"; | |||
4963 | outs() << " init_module " << r.init_module << "\n"; | |||
4964 | outs() << " reserved1 " << r.reserved1 << "\n"; | |||
4965 | outs() << " reserved2 " << r.reserved2 << "\n"; | |||
4966 | outs() << " reserved3 " << r.reserved3 << "\n"; | |||
4967 | outs() << " reserved4 " << r.reserved4 << "\n"; | |||
4968 | outs() << " reserved5 " << r.reserved5 << "\n"; | |||
4969 | outs() << " reserved6 " << r.reserved6 << "\n"; | |||
4970 | } | |||
4971 | ||||
4972 | static void Print_x86_thread_state64_t(MachO::x86_thread_state64_t &cpu64) { | |||
4973 | outs() << " rax " << format("0x%016" PRIx64"l" "x", cpu64.rax); | |||
4974 | outs() << " rbx " << format("0x%016" PRIx64"l" "x", cpu64.rbx); | |||
4975 | outs() << " rcx " << format("0x%016" PRIx64"l" "x", cpu64.rcx) << "\n"; | |||
4976 | outs() << " rdx " << format("0x%016" PRIx64"l" "x", cpu64.rdx); | |||
4977 | outs() << " rdi " << format("0x%016" PRIx64"l" "x", cpu64.rdi); | |||
4978 | outs() << " rsi " << format("0x%016" PRIx64"l" "x", cpu64.rsi) << "\n"; | |||
4979 | outs() << " rbp " << format("0x%016" PRIx64"l" "x", cpu64.rbp); | |||
4980 | outs() << " rsp " << format("0x%016" PRIx64"l" "x", cpu64.rsp); | |||
4981 | outs() << " r8 " << format("0x%016" PRIx64"l" "x", cpu64.r8) << "\n"; | |||
4982 | outs() << " r9 " << format("0x%016" PRIx64"l" "x", cpu64.r9); | |||
4983 | outs() << " r10 " << format("0x%016" PRIx64"l" "x", cpu64.r10); | |||
4984 | outs() << " r11 " << format("0x%016" PRIx64"l" "x", cpu64.r11) << "\n"; | |||
4985 | outs() << " r12 " << format("0x%016" PRIx64"l" "x", cpu64.r12); | |||
4986 | outs() << " r13 " << format("0x%016" PRIx64"l" "x", cpu64.r13); | |||
4987 | outs() << " r14 " << format("0x%016" PRIx64"l" "x", cpu64.r14) << "\n"; | |||
4988 | outs() << " r15 " << format("0x%016" PRIx64"l" "x", cpu64.r15); | |||
4989 | outs() << " rip " << format("0x%016" PRIx64"l" "x", cpu64.rip) << "\n"; | |||
4990 | outs() << "rflags " << format("0x%016" PRIx64"l" "x", cpu64.rflags); | |||
4991 | outs() << " cs " << format("0x%016" PRIx64"l" "x", cpu64.cs); | |||
4992 | outs() << " fs " << format("0x%016" PRIx64"l" "x", cpu64.fs) << "\n"; | |||
4993 | outs() << " gs " << format("0x%016" PRIx64"l" "x", cpu64.gs) << "\n"; | |||
4994 | } | |||
4995 | ||||
4996 | static void Print_mmst_reg(MachO::mmst_reg_t &r) { | |||
4997 | uint32_t f; | |||
4998 | outs() << "\t mmst_reg "; | |||
4999 | for (f = 0; f < 10; f++) | |||
5000 | outs() << format("%02" PRIx32"x", (r.mmst_reg[f] & 0xff)) << " "; | |||
5001 | outs() << "\n"; | |||
5002 | outs() << "\t mmst_rsrv "; | |||
5003 | for (f = 0; f < 6; f++) | |||
5004 | outs() << format("%02" PRIx32"x", (r.mmst_rsrv[f] & 0xff)) << " "; | |||
5005 | outs() << "\n"; | |||
5006 | } | |||
5007 | ||||
5008 | static void Print_xmm_reg(MachO::xmm_reg_t &r) { | |||
5009 | uint32_t f; | |||
5010 | outs() << "\t xmm_reg "; | |||
5011 | for (f = 0; f < 16; f++) | |||
5012 | outs() << format("%02" PRIx32"x", (r.xmm_reg[f] & 0xff)) << " "; | |||
5013 | outs() << "\n"; | |||
5014 | } | |||
5015 | ||||
5016 | static void Print_x86_float_state_t(MachO::x86_float_state64_t &fpu) { | |||
5017 | outs() << "\t fpu_reserved[0] " << fpu.fpu_reserved[0]; | |||
5018 | outs() << " fpu_reserved[1] " << fpu.fpu_reserved[1] << "\n"; | |||
5019 | outs() << "\t control: invalid " << fpu.fpu_fcw.invalid; | |||
5020 | outs() << " denorm " << fpu.fpu_fcw.denorm; | |||
5021 | outs() << " zdiv " << fpu.fpu_fcw.zdiv; | |||
5022 | outs() << " ovrfl " << fpu.fpu_fcw.ovrfl; | |||
5023 | outs() << " undfl " << fpu.fpu_fcw.undfl; | |||
5024 | outs() << " precis " << fpu.fpu_fcw.precis << "\n"; | |||
5025 | outs() << "\t\t pc "; | |||
5026 | if (fpu.fpu_fcw.pc == MachO::x86_FP_PREC_24B) | |||
5027 | outs() << "FP_PREC_24B "; | |||
5028 | else if (fpu.fpu_fcw.pc == MachO::x86_FP_PREC_53B) | |||
5029 | outs() << "FP_PREC_53B "; | |||
5030 | else if (fpu.fpu_fcw.pc == MachO::x86_FP_PREC_64B) | |||
5031 | outs() << "FP_PREC_64B "; | |||
5032 | else | |||
5033 | outs() << fpu.fpu_fcw.pc << " "; | |||
5034 | outs() << "rc "; | |||
5035 | if (fpu.fpu_fcw.rc == MachO::x86_FP_RND_NEAR) | |||
5036 | outs() << "FP_RND_NEAR "; | |||
5037 | else if (fpu.fpu_fcw.rc == MachO::x86_FP_RND_DOWN) | |||
5038 | outs() << "FP_RND_DOWN "; | |||
5039 | else if (fpu.fpu_fcw.rc == MachO::x86_FP_RND_UP) | |||
5040 | outs() << "FP_RND_UP "; | |||
5041 | else if (fpu.fpu_fcw.rc == MachO::x86_FP_CHOP) | |||
5042 | outs() << "FP_CHOP "; | |||
5043 | outs() << "\n"; | |||
5044 | outs() << "\t status: invalid " << fpu.fpu_fsw.invalid; | |||
5045 | outs() << " denorm " << fpu.fpu_fsw.denorm; | |||
5046 | outs() << " zdiv " << fpu.fpu_fsw.zdiv; | |||
5047 | outs() << " ovrfl " << fpu.fpu_fsw.ovrfl; | |||
5048 | outs() << " undfl " << fpu.fpu_fsw.undfl; | |||
5049 | outs() << " precis " << fpu.fpu_fsw.precis; | |||
5050 | outs() << " stkflt " << fpu.fpu_fsw.stkflt << "\n"; | |||
5051 | outs() << "\t errsumm " << fpu.fpu_fsw.errsumm; | |||
5052 | outs() << " c0 " << fpu.fpu_fsw.c0; | |||
5053 | outs() << " c1 " << fpu.fpu_fsw.c1; | |||
5054 | outs() << " c2 " << fpu.fpu_fsw.c2; | |||
5055 | outs() << " tos " << fpu.fpu_fsw.tos; | |||
5056 | outs() << " c3 " << fpu.fpu_fsw.c3; | |||
5057 | outs() << " busy " << fpu.fpu_fsw.busy << "\n"; | |||
5058 | outs() << "\t fpu_ftw " << format("0x%02" PRIx32"x", fpu.fpu_ftw); | |||
5059 | outs() << " fpu_rsrv1 " << format("0x%02" PRIx32"x", fpu.fpu_rsrv1); | |||
5060 | outs() << " fpu_fop " << format("0x%04" PRIx32"x", fpu.fpu_fop); | |||
5061 | outs() << " fpu_ip " << format("0x%08" PRIx32"x", fpu.fpu_ip) << "\n"; | |||
5062 | outs() << "\t fpu_cs " << format("0x%04" PRIx32"x", fpu.fpu_cs); | |||
5063 | outs() << " fpu_rsrv2 " << format("0x%04" PRIx32"x", fpu.fpu_rsrv2); | |||
5064 | outs() << " fpu_dp " << format("0x%08" PRIx32"x", fpu.fpu_dp); | |||
5065 | outs() << " fpu_ds " << format("0x%04" PRIx32"x", fpu.fpu_ds) << "\n"; | |||
5066 | outs() << "\t fpu_rsrv3 " << format("0x%04" PRIx32"x", fpu.fpu_rsrv3); | |||
5067 | outs() << " fpu_mxcsr " << format("0x%08" PRIx32"x", fpu.fpu_mxcsr); | |||
5068 | outs() << " fpu_mxcsrmask " << format("0x%08" PRIx32"x", fpu.fpu_mxcsrmask); | |||
5069 | outs() << "\n"; | |||
5070 | outs() << "\t fpu_stmm0:\n"; | |||
5071 | Print_mmst_reg(fpu.fpu_stmm0); | |||
5072 | outs() << "\t fpu_stmm1:\n"; | |||
5073 | Print_mmst_reg(fpu.fpu_stmm1); | |||
5074 | outs() << "\t fpu_stmm2:\n"; | |||
5075 | Print_mmst_reg(fpu.fpu_stmm2); | |||
5076 | outs() << "\t fpu_stmm3:\n"; | |||
5077 | Print_mmst_reg(fpu.fpu_stmm3); | |||
5078 | outs() << "\t fpu_stmm4:\n"; | |||
5079 | Print_mmst_reg(fpu.fpu_stmm4); | |||
5080 | outs() << "\t fpu_stmm5:\n"; | |||
5081 | Print_mmst_reg(fpu.fpu_stmm5); | |||
5082 | outs() << "\t fpu_stmm6:\n"; | |||
5083 | Print_mmst_reg(fpu.fpu_stmm6); | |||
5084 | outs() << "\t fpu_stmm7:\n"; | |||
5085 | Print_mmst_reg(fpu.fpu_stmm7); | |||
5086 | outs() << "\t fpu_xmm0:\n"; | |||
5087 | Print_xmm_reg(fpu.fpu_xmm0); | |||
5088 | outs() << "\t fpu_xmm1:\n"; | |||
5089 | Print_xmm_reg(fpu.fpu_xmm1); | |||
5090 | outs() << "\t fpu_xmm2:\n"; | |||
5091 | Print_xmm_reg(fpu.fpu_xmm2); | |||
5092 | outs() << "\t fpu_xmm3:\n"; | |||
5093 | Print_xmm_reg(fpu.fpu_xmm3); | |||
5094 | outs() << "\t fpu_xmm4:\n"; | |||
5095 | Print_xmm_reg(fpu.fpu_xmm4); | |||
5096 | outs() << "\t fpu_xmm5:\n"; | |||
5097 | Print_xmm_reg(fpu.fpu_xmm5); | |||
5098 | outs() << "\t fpu_xmm6:\n"; | |||
5099 | Print_xmm_reg(fpu.fpu_xmm6); | |||
5100 | outs() << "\t fpu_xmm7:\n"; | |||
5101 | Print_xmm_reg(fpu.fpu_xmm7); | |||
5102 | outs() << "\t fpu_xmm8:\n"; | |||
5103 | Print_xmm_reg(fpu.fpu_xmm8); | |||
5104 | outs() << "\t fpu_xmm9:\n"; | |||
5105 | Print_xmm_reg(fpu.fpu_xmm9); | |||
5106 | outs() << "\t fpu_xmm10:\n"; | |||
5107 | Print_xmm_reg(fpu.fpu_xmm10); | |||
5108 | outs() << "\t fpu_xmm11:\n"; | |||
5109 | Print_xmm_reg(fpu.fpu_xmm11); | |||
5110 | outs() << "\t fpu_xmm12:\n"; | |||
5111 | Print_xmm_reg(fpu.fpu_xmm12); | |||
5112 | outs() << "\t fpu_xmm13:\n"; | |||
5113 | Print_xmm_reg(fpu.fpu_xmm13); | |||
5114 | outs() << "\t fpu_xmm14:\n"; | |||
5115 | Print_xmm_reg(fpu.fpu_xmm14); | |||
5116 | outs() << "\t fpu_xmm15:\n"; | |||
5117 | Print_xmm_reg(fpu.fpu_xmm15); | |||
5118 | outs() << "\t fpu_rsrv4:\n"; | |||
5119 | for (uint32_t f = 0; f < 6; f++) { | |||
5120 | outs() << "\t "; | |||
5121 | for (uint32_t g = 0; g < 16; g++) | |||
5122 | outs() << format("%02" PRIx32"x", fpu.fpu_rsrv4[f * g]) << " "; | |||
5123 | outs() << "\n"; | |||
5124 | } | |||
5125 | outs() << "\t fpu_reserved1 " << format("0x%08" PRIx32"x", fpu.fpu_reserved1); | |||
5126 | outs() << "\n"; | |||
5127 | } | |||
5128 | ||||
5129 | static void Print_x86_exception_state_t(MachO::x86_exception_state64_t &exc64) { | |||
5130 | outs() << "\t trapno " << format("0x%08" PRIx32"x", exc64.trapno); | |||
5131 | outs() << " err " << format("0x%08" PRIx32"x", exc64.err); | |||
5132 | outs() << " faultvaddr " << format("0x%016" PRIx64"l" "x", exc64.faultvaddr) << "\n"; | |||
5133 | } | |||
5134 | ||||
5135 | static void PrintThreadCommand(MachO::thread_command t, const char *Ptr, | |||
5136 | bool isLittleEndian, uint32_t cputype) { | |||
5137 | if (t.cmd == MachO::LC_THREAD) | |||
5138 | outs() << " cmd LC_THREAD\n"; | |||
5139 | else if (t.cmd == MachO::LC_UNIXTHREAD) | |||
5140 | outs() << " cmd LC_UNIXTHREAD\n"; | |||
5141 | else | |||
5142 | outs() << " cmd " << t.cmd << " (unknown)\n"; | |||
5143 | outs() << " cmdsize " << t.cmdsize; | |||
5144 | if (t.cmdsize < sizeof(struct MachO::thread_command) + 2 * sizeof(uint32_t)) | |||
5145 | outs() << " Incorrect size\n"; | |||
5146 | else | |||
5147 | outs() << "\n"; | |||
5148 | ||||
5149 | const char *begin = Ptr + sizeof(struct MachO::thread_command); | |||
5150 | const char *end = Ptr + t.cmdsize; | |||
5151 | uint32_t flavor, count, left; | |||
5152 | if (cputype == MachO::CPU_TYPE_X86_64) { | |||
5153 | while (begin < end) { | |||
5154 | if (end - begin > (ptrdiff_t)sizeof(uint32_t)) { | |||
5155 | memcpy((char *)&flavor, begin, sizeof(uint32_t)); | |||
5156 | begin += sizeof(uint32_t); | |||
5157 | } else { | |||
5158 | flavor = 0; | |||
5159 | begin = end; | |||
5160 | } | |||
5161 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5162 | sys::swapByteOrder(flavor); | |||
5163 | if (end - begin > (ptrdiff_t)sizeof(uint32_t)) { | |||
5164 | memcpy((char *)&count, begin, sizeof(uint32_t)); | |||
5165 | begin += sizeof(uint32_t); | |||
5166 | } else { | |||
5167 | count = 0; | |||
5168 | begin = end; | |||
5169 | } | |||
5170 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5171 | sys::swapByteOrder(count); | |||
5172 | if (flavor == MachO::x86_THREAD_STATE64) { | |||
5173 | outs() << " flavor x86_THREAD_STATE64\n"; | |||
5174 | if (count == MachO::x86_THREAD_STATE64_COUNT) | |||
5175 | outs() << " count x86_THREAD_STATE64_COUNT\n"; | |||
5176 | else | |||
5177 | outs() << " count " << count | |||
5178 | << " (not x86_THREAD_STATE64_COUNT)\n"; | |||
5179 | MachO::x86_thread_state64_t cpu64; | |||
5180 | left = end - begin; | |||
5181 | if (left >= sizeof(MachO::x86_thread_state64_t)) { | |||
5182 | memcpy(&cpu64, begin, sizeof(MachO::x86_thread_state64_t)); | |||
5183 | begin += sizeof(MachO::x86_thread_state64_t); | |||
5184 | } else { | |||
5185 | memset(&cpu64, '\0', sizeof(MachO::x86_thread_state64_t)); | |||
5186 | memcpy(&cpu64, begin, left); | |||
5187 | begin += left; | |||
5188 | } | |||
5189 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5190 | swapStruct(cpu64); | |||
5191 | Print_x86_thread_state64_t(cpu64); | |||
5192 | } else if (flavor == MachO::x86_THREAD_STATE) { | |||
5193 | outs() << " flavor x86_THREAD_STATE\n"; | |||
5194 | if (count == MachO::x86_THREAD_STATE_COUNT) | |||
5195 | outs() << " count x86_THREAD_STATE_COUNT\n"; | |||
5196 | else | |||
5197 | outs() << " count " << count | |||
5198 | << " (not x86_THREAD_STATE_COUNT)\n"; | |||
5199 | struct MachO::x86_thread_state_t ts; | |||
5200 | left = end - begin; | |||
5201 | if (left >= sizeof(MachO::x86_thread_state_t)) { | |||
5202 | memcpy(&ts, begin, sizeof(MachO::x86_thread_state_t)); | |||
5203 | begin += sizeof(MachO::x86_thread_state_t); | |||
5204 | } else { | |||
5205 | memset(&ts, '\0', sizeof(MachO::x86_thread_state_t)); | |||
5206 | memcpy(&ts, begin, left); | |||
5207 | begin += left; | |||
5208 | } | |||
5209 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5210 | swapStruct(ts); | |||
5211 | if (ts.tsh.flavor == MachO::x86_THREAD_STATE64) { | |||
5212 | outs() << "\t tsh.flavor x86_THREAD_STATE64 "; | |||
5213 | if (ts.tsh.count == MachO::x86_THREAD_STATE64_COUNT) | |||
5214 | outs() << "tsh.count x86_THREAD_STATE64_COUNT\n"; | |||
5215 | else | |||
5216 | outs() << "tsh.count " << ts.tsh.count | |||
5217 | << " (not x86_THREAD_STATE64_COUNT\n"; | |||
5218 | Print_x86_thread_state64_t(ts.uts.ts64); | |||
5219 | } else { | |||
5220 | outs() << "\t tsh.flavor " << ts.tsh.flavor << " tsh.count " | |||
5221 | << ts.tsh.count << "\n"; | |||
5222 | } | |||
5223 | } else if (flavor == MachO::x86_FLOAT_STATE) { | |||
5224 | outs() << " flavor x86_FLOAT_STATE\n"; | |||
5225 | if (count == MachO::x86_FLOAT_STATE_COUNT) | |||
5226 | outs() << " count x86_FLOAT_STATE_COUNT\n"; | |||
5227 | else | |||
5228 | outs() << " count " << count << " (not x86_FLOAT_STATE_COUNT)\n"; | |||
5229 | struct MachO::x86_float_state_t fs; | |||
5230 | left = end - begin; | |||
5231 | if (left >= sizeof(MachO::x86_float_state_t)) { | |||
5232 | memcpy(&fs, begin, sizeof(MachO::x86_float_state_t)); | |||
5233 | begin += sizeof(MachO::x86_float_state_t); | |||
5234 | } else { | |||
5235 | memset(&fs, '\0', sizeof(MachO::x86_float_state_t)); | |||
5236 | memcpy(&fs, begin, left); | |||
5237 | begin += left; | |||
5238 | } | |||
5239 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5240 | swapStruct(fs); | |||
5241 | if (fs.fsh.flavor == MachO::x86_FLOAT_STATE64) { | |||
5242 | outs() << "\t fsh.flavor x86_FLOAT_STATE64 "; | |||
5243 | if (fs.fsh.count == MachO::x86_FLOAT_STATE64_COUNT) | |||
5244 | outs() << "fsh.count x86_FLOAT_STATE64_COUNT\n"; | |||
5245 | else | |||
5246 | outs() << "fsh.count " << fs.fsh.count | |||
5247 | << " (not x86_FLOAT_STATE64_COUNT\n"; | |||
5248 | Print_x86_float_state_t(fs.ufs.fs64); | |||
5249 | } else { | |||
5250 | outs() << "\t fsh.flavor " << fs.fsh.flavor << " fsh.count " | |||
5251 | << fs.fsh.count << "\n"; | |||
5252 | } | |||
5253 | } else if (flavor == MachO::x86_EXCEPTION_STATE) { | |||
5254 | outs() << " flavor x86_EXCEPTION_STATE\n"; | |||
5255 | if (count == MachO::x86_EXCEPTION_STATE_COUNT) | |||
5256 | outs() << " count x86_EXCEPTION_STATE_COUNT\n"; | |||
5257 | else | |||
5258 | outs() << " count " << count | |||
5259 | << " (not x86_EXCEPTION_STATE_COUNT)\n"; | |||
5260 | struct MachO::x86_exception_state_t es; | |||
5261 | left = end - begin; | |||
5262 | if (left >= sizeof(MachO::x86_exception_state_t)) { | |||
5263 | memcpy(&es, begin, sizeof(MachO::x86_exception_state_t)); | |||
5264 | begin += sizeof(MachO::x86_exception_state_t); | |||
5265 | } else { | |||
5266 | memset(&es, '\0', sizeof(MachO::x86_exception_state_t)); | |||
5267 | memcpy(&es, begin, left); | |||
5268 | begin += left; | |||
5269 | } | |||
5270 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5271 | swapStruct(es); | |||
5272 | if (es.esh.flavor == MachO::x86_EXCEPTION_STATE64) { | |||
5273 | outs() << "\t esh.flavor x86_EXCEPTION_STATE64\n"; | |||
5274 | if (es.esh.count == MachO::x86_EXCEPTION_STATE64_COUNT) | |||
5275 | outs() << "\t esh.count x86_EXCEPTION_STATE64_COUNT\n"; | |||
5276 | else | |||
5277 | outs() << "\t esh.count " << es.esh.count | |||
5278 | << " (not x86_EXCEPTION_STATE64_COUNT\n"; | |||
5279 | Print_x86_exception_state_t(es.ues.es64); | |||
5280 | } else { | |||
5281 | outs() << "\t esh.flavor " << es.esh.flavor << " esh.count " | |||
5282 | << es.esh.count << "\n"; | |||
5283 | } | |||
5284 | } else { | |||
5285 | outs() << " flavor " << flavor << " (unknown)\n"; | |||
5286 | outs() << " count " << count << "\n"; | |||
5287 | outs() << " state (unknown)\n"; | |||
5288 | begin += count * sizeof(uint32_t); | |||
5289 | } | |||
5290 | } | |||
5291 | } else { | |||
5292 | while (begin < end) { | |||
5293 | if (end - begin > (ptrdiff_t)sizeof(uint32_t)) { | |||
5294 | memcpy((char *)&flavor, begin, sizeof(uint32_t)); | |||
5295 | begin += sizeof(uint32_t); | |||
5296 | } else { | |||
5297 | flavor = 0; | |||
5298 | begin = end; | |||
5299 | } | |||
5300 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5301 | sys::swapByteOrder(flavor); | |||
5302 | if (end - begin > (ptrdiff_t)sizeof(uint32_t)) { | |||
5303 | memcpy((char *)&count, begin, sizeof(uint32_t)); | |||
5304 | begin += sizeof(uint32_t); | |||
5305 | } else { | |||
5306 | count = 0; | |||
5307 | begin = end; | |||
5308 | } | |||
5309 | if (isLittleEndian != sys::IsLittleEndianHost) | |||
5310 | sys::swapByteOrder(count); | |||
5311 | outs() << " flavor " << flavor << "\n"; | |||
5312 | outs() << " count " << count << "\n"; | |||
5313 | outs() << " state (Unknown cputype/cpusubtype)\n"; | |||
5314 | begin += count * sizeof(uint32_t); | |||
5315 | } | |||
5316 | } | |||
5317 | } | |||
5318 | ||||
5319 | static void PrintDylibCommand(MachO::dylib_command dl, const char *Ptr) { | |||
5320 | if (dl.cmd == MachO::LC_ID_DYLIB) | |||
5321 | outs() << " cmd LC_ID_DYLIB\n"; | |||
5322 | else if (dl.cmd == MachO::LC_LOAD_DYLIB) | |||
5323 | outs() << " cmd LC_LOAD_DYLIB\n"; | |||
5324 | else if (dl.cmd == MachO::LC_LOAD_WEAK_DYLIB) | |||
5325 | outs() << " cmd LC_LOAD_WEAK_DYLIB\n"; | |||
5326 | else if (dl.cmd == MachO::LC_REEXPORT_DYLIB) | |||
5327 | outs() << " cmd LC_REEXPORT_DYLIB\n"; | |||
5328 | else if (dl.cmd == MachO::LC_LAZY_LOAD_DYLIB) | |||
5329 | outs() << " cmd LC_LAZY_LOAD_DYLIB\n"; | |||
5330 | else if (dl.cmd == MachO::LC_LOAD_UPWARD_DYLIB) | |||
5331 | outs() << " cmd LC_LOAD_UPWARD_DYLIB\n"; | |||
5332 | else | |||
5333 | outs() << " cmd " << dl.cmd << " (unknown)\n"; | |||
5334 | outs() << " cmdsize " << dl.cmdsize; | |||
5335 | if (dl.cmdsize < sizeof(struct MachO::dylib_command)) | |||
5336 | outs() << " Incorrect size\n"; | |||
5337 | else | |||
5338 | outs() << "\n"; | |||
5339 | if (dl.dylib.name < dl.cmdsize) { | |||
5340 | const char *P = (const char *)(Ptr) + dl.dylib.name; | |||
5341 | outs() << " name " << P << " (offset " << dl.dylib.name << ")\n"; | |||
5342 | } else { | |||
5343 | outs() << " name ?(bad offset " << dl.dylib.name << ")\n"; | |||
5344 | } | |||
5345 | outs() << " time stamp " << dl.dylib.timestamp << " "; | |||
5346 | time_t t = dl.dylib.timestamp; | |||
5347 | outs() << ctime(&t); | |||
5348 | outs() << " current version "; | |||
5349 | if (dl.dylib.current_version == 0xffffffff) | |||
5350 | outs() << "n/a\n"; | |||
5351 | else | |||
5352 | outs() << ((dl.dylib.current_version >> 16) & 0xffff) << "." | |||
5353 | << ((dl.dylib.current_version >> 8) & 0xff) << "." | |||
5354 | << (dl.dylib.current_version & 0xff) << "\n"; | |||
5355 | outs() << "compatibility version "; | |||
5356 | if (dl.dylib.compatibility_version == 0xffffffff) | |||
5357 | outs() << "n/a\n"; | |||
5358 | else | |||
5359 | outs() << ((dl.dylib.compatibility_version >> 16) & 0xffff) << "." | |||
5360 | << ((dl.dylib.compatibility_version >> 8) & 0xff) << "." | |||
5361 | << (dl.dylib.compatibility_version & 0xff) << "\n"; | |||
5362 | } | |||
5363 | ||||
5364 | static void PrintLinkEditDataCommand(MachO::linkedit_data_command ld, | |||
5365 | uint32_t object_size) { | |||
5366 | if (ld.cmd == MachO::LC_CODE_SIGNATURE) | |||
5367 | outs() << " cmd LC_FUNCTION_STARTS\n"; | |||
5368 | else if (ld.cmd == MachO::LC_SEGMENT_SPLIT_INFO) | |||
5369 | outs() << " cmd LC_SEGMENT_SPLIT_INFO\n"; | |||
5370 | else if (ld.cmd == MachO::LC_FUNCTION_STARTS) | |||
5371 | outs() << " cmd LC_FUNCTION_STARTS\n"; | |||
5372 | else if (ld.cmd == MachO::LC_DATA_IN_CODE) | |||
5373 | outs() << " cmd LC_DATA_IN_CODE\n"; | |||
5374 | else if (ld.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS) | |||
5375 | outs() << " cmd LC_DYLIB_CODE_SIGN_DRS\n"; | |||
5376 | else if (ld.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT) | |||
5377 | outs() << " cmd LC_LINKER_OPTIMIZATION_HINT\n"; | |||
5378 | else | |||
5379 | outs() << " cmd " << ld.cmd << " (?)\n"; | |||
5380 | outs() << " cmdsize " << ld.cmdsize; | |||
5381 | if (ld.cmdsize != sizeof(struct MachO::linkedit_data_command)) | |||
5382 | outs() << " Incorrect size\n"; | |||
5383 | else | |||
5384 | outs() << "\n"; | |||
5385 | outs() << " dataoff " << ld.dataoff; | |||
5386 | if (ld.dataoff > object_size) | |||
5387 | outs() << " (past end of file)\n"; | |||
5388 | else | |||
5389 | outs() << "\n"; | |||
5390 | outs() << " datasize " << ld.datasize; | |||
5391 | uint64_t big_size = ld.dataoff; | |||
5392 | big_size += ld.datasize; | |||
5393 | if (big_size > object_size) | |||
5394 | outs() << " (past end of file)\n"; | |||
5395 | else | |||
5396 | outs() << "\n"; | |||
5397 | } | |||
5398 | ||||
5399 | static void PrintLoadCommands(const MachOObjectFile *Obj, uint32_t ncmds, | |||
5400 | uint32_t filetype, uint32_t cputype, | |||
5401 | bool verbose) { | |||
5402 | if (ncmds == 0) | |||
5403 | return; | |||
5404 | StringRef Buf = Obj->getData(); | |||
5405 | MachOObjectFile::LoadCommandInfo Command = Obj->getFirstLoadCommandInfo(); | |||
5406 | for (unsigned i = 0;; ++i) { | |||
5407 | outs() << "Load command " << i << "\n"; | |||
5408 | if (Command.C.cmd == MachO::LC_SEGMENT) { | |||
5409 | MachO::segment_command SLC = Obj->getSegmentLoadCommand(Command); | |||
5410 | const char *sg_segname = SLC.segname; | |||
5411 | PrintSegmentCommand(SLC.cmd, SLC.cmdsize, SLC.segname, SLC.vmaddr, | |||
5412 | SLC.vmsize, SLC.fileoff, SLC.filesize, SLC.maxprot, | |||
5413 | SLC.initprot, SLC.nsects, SLC.flags, Buf.size(), | |||
5414 | verbose); | |||
5415 | for (unsigned j = 0; j < SLC.nsects; j++) { | |||
5416 | MachO::section S = Obj->getSection(Command, j); | |||
5417 | PrintSection(S.sectname, S.segname, S.addr, S.size, S.offset, S.align, | |||
5418 | S.reloff, S.nreloc, S.flags, S.reserved1, S.reserved2, | |||
5419 | SLC.cmd, sg_segname, filetype, Buf.size(), verbose); | |||
5420 | } | |||
5421 | } else if (Command.C.cmd == MachO::LC_SEGMENT_64) { | |||
5422 | MachO::segment_command_64 SLC_64 = Obj->getSegment64LoadCommand(Command); | |||
5423 | const char *sg_segname = SLC_64.segname; | |||
5424 | PrintSegmentCommand(SLC_64.cmd, SLC_64.cmdsize, SLC_64.segname, | |||
5425 | SLC_64.vmaddr, SLC_64.vmsize, SLC_64.fileoff, | |||
5426 | SLC_64.filesize, SLC_64.maxprot, SLC_64.initprot, | |||
5427 | SLC_64.nsects, SLC_64.flags, Buf.size(), verbose); | |||
5428 | for (unsigned j = 0; j < SLC_64.nsects; j++) { | |||
5429 | MachO::section_64 S_64 = Obj->getSection64(Command, j); | |||
5430 | PrintSection(S_64.sectname, S_64.segname, S_64.addr, S_64.size, | |||
5431 | S_64.offset, S_64.align, S_64.reloff, S_64.nreloc, | |||
5432 | S_64.flags, S_64.reserved1, S_64.reserved2, SLC_64.cmd, | |||
5433 | sg_segname, filetype, Buf.size(), verbose); | |||
5434 | } | |||
5435 | } else if (Command.C.cmd == MachO::LC_SYMTAB) { | |||
5436 | MachO::symtab_command Symtab = Obj->getSymtabLoadCommand(); | |||
5437 | PrintSymtabLoadCommand(Symtab, Obj->is64Bit(), Buf.size()); | |||
5438 | } else if (Command.C.cmd == MachO::LC_DYSYMTAB) { | |||
5439 | MachO::dysymtab_command Dysymtab = Obj->getDysymtabLoadCommand(); | |||
5440 | MachO::symtab_command Symtab = Obj->getSymtabLoadCommand(); | |||
5441 | PrintDysymtabLoadCommand(Dysymtab, Symtab.nsyms, Buf.size(), | |||
5442 | Obj->is64Bit()); | |||
5443 | } else if (Command.C.cmd == MachO::LC_DYLD_INFO || | |||
5444 | Command.C.cmd == MachO::LC_DYLD_INFO_ONLY) { | |||
5445 | MachO::dyld_info_command DyldInfo = Obj->getDyldInfoLoadCommand(Command); | |||
5446 | PrintDyldInfoLoadCommand(DyldInfo, Buf.size()); | |||
5447 | } else if (Command.C.cmd == MachO::LC_LOAD_DYLINKER || | |||
5448 | Command.C.cmd == MachO::LC_ID_DYLINKER || | |||
5449 | Command.C.cmd == MachO::LC_DYLD_ENVIRONMENT) { | |||
5450 | MachO::dylinker_command Dyld = Obj->getDylinkerCommand(Command); | |||
5451 | PrintDyldLoadCommand(Dyld, Command.Ptr); | |||
5452 | } else if (Command.C.cmd == MachO::LC_UUID) { | |||
5453 | MachO::uuid_command Uuid = Obj->getUuidCommand(Command); | |||
5454 | PrintUuidLoadCommand(Uuid); | |||
5455 | } else if (Command.C.cmd == MachO::LC_RPATH) { | |||
5456 | MachO::rpath_command Rpath = Obj->getRpathCommand(Command); | |||
5457 | PrintRpathLoadCommand(Rpath, Command.Ptr); | |||
5458 | } else if (Command.C.cmd == MachO::LC_VERSION_MIN_MACOSX || | |||
5459 | Command.C.cmd == MachO::LC_VERSION_MIN_IPHONEOS) { | |||
5460 | MachO::version_min_command Vd = Obj->getVersionMinLoadCommand(Command); | |||
5461 | PrintVersionMinLoadCommand(Vd); | |||
5462 | } else if (Command.C.cmd == MachO::LC_SOURCE_VERSION) { | |||
5463 | MachO::source_version_command Sd = Obj->getSourceVersionCommand(Command); | |||
5464 | PrintSourceVersionCommand(Sd); | |||
5465 | } else if (Command.C.cmd == MachO::LC_MAIN) { | |||
5466 | MachO::entry_point_command Ep = Obj->getEntryPointCommand(Command); | |||
5467 | PrintEntryPointCommand(Ep); | |||
5468 | } else if (Command.C.cmd == MachO::LC_ENCRYPTION_INFO) { | |||
5469 | MachO::encryption_info_command Ei = | |||
5470 | Obj->getEncryptionInfoCommand(Command); | |||
5471 | PrintEncryptionInfoCommand(Ei, Buf.size()); | |||
5472 | } else if (Command.C.cmd == MachO::LC_ENCRYPTION_INFO_64) { | |||
5473 | MachO::encryption_info_command_64 Ei = | |||
5474 | Obj->getEncryptionInfoCommand64(Command); | |||
5475 | PrintEncryptionInfoCommand64(Ei, Buf.size()); | |||
5476 | } else if (Command.C.cmd == MachO::LC_LINKER_OPTION) { | |||
5477 | MachO::linker_option_command Lo = | |||
5478 | Obj->getLinkerOptionLoadCommand(Command); | |||
5479 | PrintLinkerOptionCommand(Lo, Command.Ptr); | |||
5480 | } else if (Command.C.cmd == MachO::LC_SUB_FRAMEWORK) { | |||
5481 | MachO::sub_framework_command Sf = Obj->getSubFrameworkCommand(Command); | |||
5482 | PrintSubFrameworkCommand(Sf, Command.Ptr); | |||
5483 | } else if (Command.C.cmd == MachO::LC_SUB_UMBRELLA) { | |||
5484 | MachO::sub_umbrella_command Sf = Obj->getSubUmbrellaCommand(Command); | |||
5485 | PrintSubUmbrellaCommand(Sf, Command.Ptr); | |||
5486 | } else if (Command.C.cmd == MachO::LC_SUB_LIBRARY) { | |||
5487 | MachO::sub_library_command Sl = Obj->getSubLibraryCommand(Command); | |||
5488 | PrintSubLibraryCommand(Sl, Command.Ptr); | |||
5489 | } else if (Command.C.cmd == MachO::LC_SUB_CLIENT) { | |||
5490 | MachO::sub_client_command Sc = Obj->getSubClientCommand(Command); | |||
5491 | PrintSubClientCommand(Sc, Command.Ptr); | |||
5492 | } else if (Command.C.cmd == MachO::LC_ROUTINES) { | |||
5493 | MachO::routines_command Rc = Obj->getRoutinesCommand(Command); | |||
5494 | PrintRoutinesCommand(Rc); | |||
5495 | } else if (Command.C.cmd == MachO::LC_ROUTINES_64) { | |||
5496 | MachO::routines_command_64 Rc = Obj->getRoutinesCommand64(Command); | |||
5497 | PrintRoutinesCommand64(Rc); | |||
5498 | } else if (Command.C.cmd == MachO::LC_THREAD || | |||
5499 | Command.C.cmd == MachO::LC_UNIXTHREAD) { | |||
5500 | MachO::thread_command Tc = Obj->getThreadCommand(Command); | |||
5501 | PrintThreadCommand(Tc, Command.Ptr, Obj->isLittleEndian(), cputype); | |||
5502 | } else if (Command.C.cmd == MachO::LC_LOAD_DYLIB || | |||
5503 | Command.C.cmd == MachO::LC_ID_DYLIB || | |||
5504 | Command.C.cmd == MachO::LC_LOAD_WEAK_DYLIB || | |||
5505 | Command.C.cmd == MachO::LC_REEXPORT_DYLIB || | |||
5506 | Command.C.cmd == MachO::LC_LAZY_LOAD_DYLIB || | |||
5507 | Command.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) { | |||
5508 | MachO::dylib_command Dl = Obj->getDylibIDLoadCommand(Command); | |||
5509 | PrintDylibCommand(Dl, Command.Ptr); | |||
5510 | } else if (Command.C.cmd == MachO::LC_CODE_SIGNATURE || | |||
5511 | Command.C.cmd == MachO::LC_SEGMENT_SPLIT_INFO || | |||
5512 | Command.C.cmd == MachO::LC_FUNCTION_STARTS || | |||
5513 | Command.C.cmd == MachO::LC_DATA_IN_CODE || | |||
5514 | Command.C.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS || | |||
5515 | Command.C.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT) { | |||
5516 | MachO::linkedit_data_command Ld = | |||
5517 | Obj->getLinkeditDataLoadCommand(Command); | |||
5518 | PrintLinkEditDataCommand(Ld, Buf.size()); | |||
5519 | } else { | |||
5520 | outs() << " cmd ?(" << format("0x%08" PRIx32"x", Command.C.cmd) | |||
5521 | << ")\n"; | |||
5522 | outs() << " cmdsize " << Command.C.cmdsize << "\n"; | |||
5523 | // TODO: get and print the raw bytes of the load command. | |||
5524 | } | |||
5525 | // TODO: print all the other kinds of load commands. | |||
5526 | if (i == ncmds - 1) | |||
5527 | break; | |||
5528 | else | |||
5529 | Command = Obj->getNextLoadCommandInfo(Command); | |||
5530 | } | |||
5531 | } | |||
5532 | ||||
5533 | static void getAndPrintMachHeader(const MachOObjectFile *Obj, uint32_t &ncmds, | |||
5534 | uint32_t &filetype, uint32_t &cputype, | |||
5535 | bool verbose) { | |||
5536 | if (Obj->is64Bit()) { | |||
5537 | MachO::mach_header_64 H_64; | |||
5538 | H_64 = Obj->getHeader64(); | |||
5539 | PrintMachHeader(H_64.magic, H_64.cputype, H_64.cpusubtype, H_64.filetype, | |||
5540 | H_64.ncmds, H_64.sizeofcmds, H_64.flags, verbose); | |||
5541 | ncmds = H_64.ncmds; | |||
5542 | filetype = H_64.filetype; | |||
5543 | cputype = H_64.cputype; | |||
5544 | } else { | |||
5545 | MachO::mach_header H; | |||
5546 | H = Obj->getHeader(); | |||
5547 | PrintMachHeader(H.magic, H.cputype, H.cpusubtype, H.filetype, H.ncmds, | |||
5548 | H.sizeofcmds, H.flags, verbose); | |||
5549 | ncmds = H.ncmds; | |||
5550 | filetype = H.filetype; | |||
5551 | cputype = H.cputype; | |||
5552 | } | |||
5553 | } | |||
5554 | ||||
5555 | void llvm::printMachOFileHeader(const object::ObjectFile *Obj) { | |||
5556 | const MachOObjectFile *file = dyn_cast<const MachOObjectFile>(Obj); | |||
5557 | uint32_t ncmds = 0; | |||
5558 | uint32_t filetype = 0; | |||
5559 | uint32_t cputype = 0; | |||
5560 | getAndPrintMachHeader(file, ncmds, filetype, cputype, !NonVerbose); | |||
5561 | PrintLoadCommands(file, ncmds, filetype, cputype, !NonVerbose); | |||
5562 | } | |||
5563 | ||||
5564 | //===----------------------------------------------------------------------===// | |||
5565 | // export trie dumping | |||
5566 | //===----------------------------------------------------------------------===// | |||
5567 | ||||
5568 | void llvm::printMachOExportsTrie(const object::MachOObjectFile *Obj) { | |||
5569 | for (const llvm::object::ExportEntry &Entry : Obj->exports()) { | |||
5570 | uint64_t Flags = Entry.flags(); | |||
5571 | bool ReExport = (Flags & MachO::EXPORT_SYMBOL_FLAGS_REEXPORT); | |||
5572 | bool WeakDef = (Flags & MachO::EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION); | |||
5573 | bool ThreadLocal = ((Flags & MachO::EXPORT_SYMBOL_FLAGS_KIND_MASK) == | |||
5574 | MachO::EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL); | |||
5575 | bool Abs = ((Flags & MachO::EXPORT_SYMBOL_FLAGS_KIND_MASK) == | |||
5576 | MachO::EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE); | |||
5577 | bool Resolver = (Flags & MachO::EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER); | |||
5578 | if (ReExport) | |||
5579 | outs() << "[re-export] "; | |||
5580 | else | |||
5581 | outs() << format("0x%08llX ", | |||
5582 | Entry.address()); // FIXME:add in base address | |||
5583 | outs() << Entry.name(); | |||
5584 | if (WeakDef || ThreadLocal || Resolver || Abs) { | |||
5585 | bool NeedsComma = false; | |||
5586 | outs() << " ["; | |||
5587 | if (WeakDef) { | |||
5588 | outs() << "weak_def"; | |||
5589 | NeedsComma = true; | |||
5590 | } | |||
5591 | if (ThreadLocal) { | |||
5592 | if (NeedsComma) | |||
5593 | outs() << ", "; | |||
5594 | outs() << "per-thread"; | |||
5595 | NeedsComma = true; | |||
5596 | } | |||
5597 | if (Abs) { | |||
5598 | if (NeedsComma) | |||
5599 | outs() << ", "; | |||
5600 | outs() << "absolute"; | |||
5601 | NeedsComma = true; | |||
5602 | } | |||
5603 | if (Resolver) { | |||
5604 | if (NeedsComma) | |||
5605 | outs() << ", "; | |||
5606 | outs() << format("resolver=0x%08llX", Entry.other()); | |||
5607 | NeedsComma = true; | |||
5608 | } | |||
5609 | outs() << "]"; | |||
5610 | } | |||
5611 | if (ReExport) { | |||
5612 | StringRef DylibName = "unknown"; | |||
5613 | int Ordinal = Entry.other() - 1; | |||
5614 | Obj->getLibraryShortNameByIndex(Ordinal, DylibName); | |||
5615 | if (Entry.otherName().empty()) | |||
5616 | outs() << " (from " << DylibName << ")"; | |||
5617 | else | |||
5618 | outs() << " (" << Entry.otherName() << " from " << DylibName << ")"; | |||
5619 | } | |||
5620 | outs() << "\n"; | |||
5621 | } | |||
5622 | } | |||
5623 | ||||
5624 | //===----------------------------------------------------------------------===// | |||
5625 | // rebase table dumping | |||
5626 | //===----------------------------------------------------------------------===// | |||
5627 | ||||
5628 | namespace { | |||
5629 | class SegInfo { | |||
5630 | public: | |||
5631 | SegInfo(const object::MachOObjectFile *Obj); | |||
5632 | ||||
5633 | StringRef segmentName(uint32_t SegIndex); | |||
5634 | StringRef sectionName(uint32_t SegIndex, uint64_t SegOffset); | |||
5635 | uint64_t address(uint32_t SegIndex, uint64_t SegOffset); | |||
5636 | ||||
5637 | private: | |||
5638 | struct SectionInfo { | |||
5639 | uint64_t Address; | |||
5640 | uint64_t Size; | |||
5641 | StringRef SectionName; | |||
5642 | StringRef SegmentName; | |||
5643 | uint64_t OffsetInSegment; | |||
5644 | uint64_t SegmentStartAddress; | |||
5645 | uint32_t SegmentIndex; | |||
5646 | }; | |||
5647 | const SectionInfo &findSection(uint32_t SegIndex, uint64_t SegOffset); | |||
5648 | SmallVector<SectionInfo, 32> Sections; | |||
5649 | }; | |||
5650 | } | |||
5651 | ||||
5652 | SegInfo::SegInfo(const object::MachOObjectFile *Obj) { | |||
5653 | // Build table of sections so segIndex/offset pairs can be translated. | |||
5654 | uint32_t CurSegIndex = Obj->hasPageZeroSegment() ? 1 : 0; | |||
5655 | StringRef CurSegName; | |||
5656 | uint64_t CurSegAddress; | |||
5657 | for (const SectionRef &Section : Obj->sections()) { | |||
5658 | SectionInfo Info; | |||
5659 | if (error(Section.getName(Info.SectionName))) | |||
5660 | return; | |||
5661 | Info.Address = Section.getAddress(); | |||
5662 | Info.Size = Section.getSize(); | |||
5663 | Info.SegmentName = | |||
5664 | Obj->getSectionFinalSegmentName(Section.getRawDataRefImpl()); | |||
5665 | if (!Info.SegmentName.equals(CurSegName)) { | |||
5666 | ++CurSegIndex; | |||
5667 | CurSegName = Info.SegmentName; | |||
5668 | CurSegAddress = Info.Address; | |||
5669 | } | |||
5670 | Info.SegmentIndex = CurSegIndex - 1; | |||
5671 | Info.OffsetInSegment = Info.Address - CurSegAddress; | |||
5672 | Info.SegmentStartAddress = CurSegAddress; | |||
5673 | Sections.push_back(Info); | |||
5674 | } | |||
5675 | } | |||
5676 | ||||
5677 | StringRef SegInfo::segmentName(uint32_t SegIndex) { | |||
5678 | for (const SectionInfo &SI : Sections) { | |||
5679 | if (SI.SegmentIndex == SegIndex) | |||
5680 | return SI.SegmentName; | |||
5681 | } | |||
5682 | llvm_unreachable("invalid segIndex")::llvm::llvm_unreachable_internal("invalid segIndex", "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 5682); | |||
5683 | } | |||
5684 | ||||
5685 | const SegInfo::SectionInfo &SegInfo::findSection(uint32_t SegIndex, | |||
5686 | uint64_t OffsetInSeg) { | |||
5687 | for (const SectionInfo &SI : Sections) { | |||
5688 | if (SI.SegmentIndex != SegIndex) | |||
5689 | continue; | |||
5690 | if (SI.OffsetInSegment > OffsetInSeg) | |||
5691 | continue; | |||
5692 | if (OffsetInSeg >= (SI.OffsetInSegment + SI.Size)) | |||
5693 | continue; | |||
5694 | return SI; | |||
5695 | } | |||
5696 | llvm_unreachable("segIndex and offset not in any section")::llvm::llvm_unreachable_internal("segIndex and offset not in any section" , "/tmp/buildd/llvm-toolchain-snapshot-3.7~svn232922/tools/llvm-objdump/MachODump.cpp" , 5696); | |||
5697 | } | |||
5698 | ||||
5699 | StringRef SegInfo::sectionName(uint32_t SegIndex, uint64_t OffsetInSeg) { | |||
5700 | return findSection(SegIndex, OffsetInSeg).SectionName; | |||
5701 | } | |||
5702 | ||||
5703 | uint64_t SegInfo::address(uint32_t SegIndex, uint64_t OffsetInSeg) { | |||
5704 | const SectionInfo &SI = findSection(SegIndex, OffsetInSeg); | |||
5705 | return SI.SegmentStartAddress + OffsetInSeg; | |||
5706 | } | |||
5707 | ||||
5708 | void llvm::printMachORebaseTable(const object::MachOObjectFile *Obj) { | |||
5709 | // Build table of sections so names can used in final output. | |||
5710 | SegInfo sectionTable(Obj); | |||
5711 | ||||
5712 | outs() << "segment section address type\n"; | |||
5713 | for (const llvm::object::MachORebaseEntry &Entry : Obj->rebaseTable()) { | |||
5714 | uint32_t SegIndex = Entry.segmentIndex(); | |||
5715 | uint64_t OffsetInSeg = Entry.segmentOffset(); | |||
5716 | StringRef SegmentName = sectionTable.segmentName(SegIndex); | |||
5717 | StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg); | |||
5718 | uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg); | |||
5719 | ||||
5720 | // Table lines look like: __DATA __nl_symbol_ptr 0x0000F00C pointer | |||
5721 | outs() << format("%-8s %-18s 0x%08" PRIX64"l" "X" " %s\n", | |||
5722 | SegmentName.str().c_str(), SectionName.str().c_str(), | |||
5723 | Address, Entry.typeName().str().c_str()); | |||
5724 | } | |||
5725 | } | |||
5726 | ||||
5727 | static StringRef ordinalName(const object::MachOObjectFile *Obj, int Ordinal) { | |||
5728 | StringRef DylibName; | |||
5729 | switch (Ordinal) { | |||
5730 | case MachO::BIND_SPECIAL_DYLIB_SELF: | |||
5731 | return "this-image"; | |||
5732 | case MachO::BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE: | |||
5733 | return "main-executable"; | |||
5734 | case MachO::BIND_SPECIAL_DYLIB_FLAT_LOOKUP: | |||
5735 | return "flat-namespace"; | |||
5736 | default: | |||
5737 | if (Ordinal > 0) { | |||
5738 | std::error_code EC = | |||
5739 | Obj->getLibraryShortNameByIndex(Ordinal - 1, DylibName); | |||
5740 | if (EC) | |||
5741 | return "<<bad library ordinal>>"; | |||
5742 | return DylibName; | |||
5743 | } | |||
5744 | } | |||
5745 | return "<<unknown special ordinal>>"; | |||
5746 | } | |||
5747 | ||||
5748 | //===----------------------------------------------------------------------===// | |||
5749 | // bind table dumping | |||
5750 | //===----------------------------------------------------------------------===// | |||
5751 | ||||
5752 | void llvm::printMachOBindTable(const object::MachOObjectFile *Obj) { | |||
5753 | // Build table of sections so names can used in final output. | |||
5754 | SegInfo sectionTable(Obj); | |||
5755 | ||||
5756 | outs() << "segment section address type " | |||
5757 | "addend dylib symbol\n"; | |||
5758 | for (const llvm::object::MachOBindEntry &Entry : Obj->bindTable()) { | |||
5759 | uint32_t SegIndex = Entry.segmentIndex(); | |||
5760 | uint64_t OffsetInSeg = Entry.segmentOffset(); | |||
5761 | StringRef SegmentName = sectionTable.segmentName(SegIndex); | |||
5762 | StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg); | |||
5763 | uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg); | |||
5764 | ||||
5765 | // Table lines look like: | |||
5766 | // __DATA __got 0x00012010 pointer 0 libSystem ___stack_chk_guard | |||
5767 | StringRef Attr; | |||
5768 | if (Entry.flags() & MachO::BIND_SYMBOL_FLAGS_WEAK_IMPORT) | |||
5769 | Attr = " (weak_import)"; | |||
5770 | outs() << left_justify(SegmentName, 8) << " " | |||
5771 | << left_justify(SectionName, 18) << " " | |||
5772 | << format_hex(Address, 10, true) << " " | |||
5773 | << left_justify(Entry.typeName(), 8) << " " | |||
5774 | << format_decimal(Entry.addend(), 8) << " " | |||
5775 | << left_justify(ordinalName(Obj, Entry.ordinal()), 16) << " " | |||
5776 | << Entry.symbolName() << Attr << "\n"; | |||
5777 | } | |||
5778 | } | |||
5779 | ||||
5780 | //===----------------------------------------------------------------------===// | |||
5781 | // lazy bind table dumping | |||
5782 | //===----------------------------------------------------------------------===// | |||
5783 | ||||
5784 | void llvm::printMachOLazyBindTable(const object::MachOObjectFile *Obj) { | |||
5785 | // Build table of sections so names can used in final output. | |||
5786 | SegInfo sectionTable(Obj); | |||
5787 | ||||
5788 | outs() << "segment section address " | |||
5789 | "dylib symbol\n"; | |||
5790 | for (const llvm::object::MachOBindEntry &Entry : Obj->lazyBindTable()) { | |||
5791 | uint32_t SegIndex = Entry.segmentIndex(); | |||
5792 | uint64_t OffsetInSeg = Entry.segmentOffset(); | |||
5793 | StringRef SegmentName = sectionTable.segmentName(SegIndex); | |||
5794 | StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg); | |||
5795 | uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg); | |||
5796 | ||||
5797 | // Table lines look like: | |||
5798 | // __DATA __got 0x00012010 libSystem ___stack_chk_guard | |||
5799 | outs() << left_justify(SegmentName, 8) << " " | |||
5800 | << left_justify(SectionName, 18) << " " | |||
5801 | << format_hex(Address, 10, true) << " " | |||
5802 | << left_justify(ordinalName(Obj, Entry.ordinal()), 16) << " " | |||
5803 | << Entry.symbolName() << "\n"; | |||
5804 | } | |||
5805 | } | |||
5806 | ||||
5807 | //===----------------------------------------------------------------------===// | |||
5808 | // weak bind table dumping | |||
5809 | //===----------------------------------------------------------------------===// | |||
5810 | ||||
5811 | void llvm::printMachOWeakBindTable(const object::MachOObjectFile *Obj) { | |||
5812 | // Build table of sections so names can used in final output. | |||
5813 | SegInfo sectionTable(Obj); | |||
5814 | ||||
5815 | outs() << "segment section address " | |||
5816 | "type addend symbol\n"; | |||
5817 | for (const llvm::object::MachOBindEntry &Entry : Obj->weakBindTable()) { | |||
5818 | // Strong symbols don't have a location to update. | |||
5819 | if (Entry.flags() & MachO::BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION) { | |||
5820 | outs() << " strong " | |||
5821 | << Entry.symbolName() << "\n"; | |||
5822 | continue; | |||
5823 | } | |||
5824 | uint32_t SegIndex = Entry.segmentIndex(); | |||
5825 | uint64_t OffsetInSeg = Entry.segmentOffset(); | |||
5826 | StringRef SegmentName = sectionTable.segmentName(SegIndex); | |||
5827 | StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg); | |||
5828 | uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg); | |||
5829 | ||||
5830 | // Table lines look like: | |||
5831 | // __DATA __data 0x00001000 pointer 0 _foo | |||
5832 | outs() << left_justify(SegmentName, 8) << " " | |||
5833 | << left_justify(SectionName, 18) << " " | |||
5834 | << format_hex(Address, 10, true) << " " | |||
5835 | << left_justify(Entry.typeName(), 8) << " " | |||
5836 | << format_decimal(Entry.addend(), 8) << " " << Entry.symbolName() | |||
5837 | << "\n"; | |||
5838 | } | |||
5839 | } | |||
5840 | ||||
5841 | // get_dyld_bind_info_symbolname() is used for disassembly and passed an | |||
5842 | // address, ReferenceValue, in the Mach-O file and looks in the dyld bind | |||
5843 | // information for that address. If the address is found its binding symbol | |||
5844 | // name is returned. If not nullptr is returned. | |||
5845 | static const char *get_dyld_bind_info_symbolname(uint64_t ReferenceValue, | |||
5846 | struct DisassembleInfo *info) { | |||
5847 | if (info->bindtable == nullptr) { | |||
5848 | info->bindtable = new (BindTable); | |||
5849 | SegInfo sectionTable(info->O); | |||
5850 | for (const llvm::object::MachOBindEntry &Entry : info->O->bindTable()) { | |||
5851 | uint32_t SegIndex = Entry.segmentIndex(); | |||
5852 | uint64_t OffsetInSeg = Entry.segmentOffset(); | |||
5853 | uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg); | |||
5854 | const char *SymbolName = nullptr; | |||
5855 | StringRef name = Entry.symbolName(); | |||
5856 | if (!name.empty()) | |||
5857 | SymbolName = name.data(); | |||
5858 | info->bindtable->push_back(std::make_pair(Address, SymbolName)); | |||
5859 | } | |||
5860 | } | |||
5861 | for (bind_table_iterator BI = info->bindtable->begin(), | |||
5862 | BE = info->bindtable->end(); | |||
5863 | BI != BE; ++BI) { | |||
5864 | uint64_t Address = BI->first; | |||
5865 | if (ReferenceValue == Address) { | |||
5866 | const char *SymbolName = BI->second; | |||
5867 | return SymbolName; | |||
5868 | } | |||
5869 | } | |||
5870 | return nullptr; | |||
5871 | } |