1 //===-- MachODump.cpp - Object file dumping utility for llvm --------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the MachO-specific dumper for llvm-objdump.
12 //===----------------------------------------------------------------------===//
14 #include "llvm-objdump.h"
15 #include "llvm/ADT/STLExtras.h"
16 #include "llvm/ADT/StringExtras.h"
17 #include "llvm/ADT/Triple.h"
18 #include "llvm/DebugInfo/DIContext.h"
19 #include "llvm/MC/MCAsmInfo.h"
20 #include "llvm/MC/MCContext.h"
21 #include "llvm/MC/MCDisassembler.h"
22 #include "llvm/MC/MCInst.h"
23 #include "llvm/MC/MCInstPrinter.h"
24 #include "llvm/MC/MCInstrAnalysis.h"
25 #include "llvm/MC/MCInstrDesc.h"
26 #include "llvm/MC/MCInstrInfo.h"
27 #include "llvm/MC/MCRegisterInfo.h"
28 #include "llvm/MC/MCSubtargetInfo.h"
29 #include "llvm/Object/MachO.h"
30 #include "llvm/Support/Casting.h"
31 #include "llvm/Support/CommandLine.h"
32 #include "llvm/Support/Debug.h"
33 #include "llvm/Support/Endian.h"
34 #include "llvm/Support/Format.h"
35 #include "llvm/Support/GraphWriter.h"
36 #include "llvm/Support/MachO.h"
37 #include "llvm/Support/MemoryBuffer.h"
38 #include "llvm/Support/TargetRegistry.h"
39 #include "llvm/Support/TargetSelect.h"
40 #include "llvm/Support/raw_ostream.h"
43 #include <system_error>
45 using namespace object;
48 UseDbg("g", cl::desc("Print line information from debug info if available"));
50 static cl::opt<std::string>
51 DSYMFile("dsym", cl::desc("Use .dSYM file for debug info"));
53 static std::string ThumbTripleName;
55 static const Target *GetTarget(const MachOObjectFile *MachOObj,
56 const char **McpuDefault,
57 const Target **ThumbTarget) {
58 // Figure out the target triple.
59 if (TripleName.empty()) {
60 llvm::Triple TT("unknown-unknown-unknown");
61 llvm::Triple ThumbTriple = Triple();
62 TT = MachOObj->getArch(McpuDefault, &ThumbTriple);
63 TripleName = TT.str();
64 ThumbTripleName = ThumbTriple.str();
67 // Get the target specific parser.
69 const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
70 if (TheTarget && ThumbTripleName.empty())
73 *ThumbTarget = TargetRegistry::lookupTarget(ThumbTripleName, Error);
77 errs() << "llvm-objdump: error: unable to get target for '";
81 errs() << ThumbTripleName;
82 errs() << "', see --version and --triple.\n";
87 bool operator()(const SymbolRef &A, const SymbolRef &B) {
88 SymbolRef::Type AType, BType;
92 uint64_t AAddr, BAddr;
93 if (AType != SymbolRef::ST_Function)
97 if (BType != SymbolRef::ST_Function)
101 return AAddr < BAddr;
105 // Types for the storted data in code table that is built before disassembly
106 // and the predicate function to sort them.
107 typedef std::pair<uint64_t, DiceRef> DiceTableEntry;
108 typedef std::vector<DiceTableEntry> DiceTable;
109 typedef DiceTable::iterator dice_table_iterator;
112 compareDiceTableEntries(const DiceTableEntry i,
113 const DiceTableEntry j) {
114 return i.first == j.first;
117 static void DumpDataInCode(const char *bytes, uint64_t Size,
118 unsigned short Kind) {
122 case MachO::DICE_KIND_DATA:
125 Value = bytes[3] << 24 |
129 outs() << "\t.long " << Value;
132 Value = bytes[1] << 8 |
134 outs() << "\t.short " << Value;
138 outs() << "\t.byte " << Value;
141 outs() << "\t@ KIND_DATA\n";
143 case MachO::DICE_KIND_JUMP_TABLE8:
145 outs() << "\t.byte " << Value << "\t@ KIND_JUMP_TABLE8";
147 case MachO::DICE_KIND_JUMP_TABLE16:
148 Value = bytes[1] << 8 |
150 outs() << "\t.short " << Value << "\t@ KIND_JUMP_TABLE16";
152 case MachO::DICE_KIND_JUMP_TABLE32:
153 Value = bytes[3] << 24 |
157 outs() << "\t.long " << Value << "\t@ KIND_JUMP_TABLE32";
160 outs() << "\t@ data in code kind = " << Kind << "\n";
165 static void getSectionsAndSymbols(const MachO::mach_header Header,
166 MachOObjectFile *MachOObj,
167 std::vector<SectionRef> &Sections,
168 std::vector<SymbolRef> &Symbols,
169 SmallVectorImpl<uint64_t> &FoundFns,
170 uint64_t &BaseSegmentAddress) {
171 for (const SymbolRef &Symbol : MachOObj->symbols())
172 Symbols.push_back(Symbol);
174 for (const SectionRef &Section : MachOObj->sections()) {
176 Section.getName(SectName);
177 Sections.push_back(Section);
180 MachOObjectFile::LoadCommandInfo Command =
181 MachOObj->getFirstLoadCommandInfo();
182 bool BaseSegmentAddressSet = false;
183 for (unsigned i = 0; ; ++i) {
184 if (Command.C.cmd == MachO::LC_FUNCTION_STARTS) {
185 // We found a function starts segment, parse the addresses for later
187 MachO::linkedit_data_command LLC =
188 MachOObj->getLinkeditDataLoadCommand(Command);
190 MachOObj->ReadULEB128s(LLC.dataoff, FoundFns);
192 else if (Command.C.cmd == MachO::LC_SEGMENT) {
193 MachO::segment_command SLC =
194 MachOObj->getSegmentLoadCommand(Command);
195 StringRef SegName = SLC.segname;
196 if(!BaseSegmentAddressSet && SegName != "__PAGEZERO") {
197 BaseSegmentAddressSet = true;
198 BaseSegmentAddress = SLC.vmaddr;
202 if (i == Header.ncmds - 1)
205 Command = MachOObj->getNextLoadCommandInfo(Command);
209 static void DisassembleInputMachO2(StringRef Filename,
210 MachOObjectFile *MachOOF);
212 void llvm::DisassembleInputMachO(StringRef Filename) {
213 ErrorOr<std::unique_ptr<MemoryBuffer>> BuffOrErr =
214 MemoryBuffer::getFileOrSTDIN(Filename);
215 if (std::error_code EC = BuffOrErr.getError()) {
216 errs() << "llvm-objdump: " << Filename << ": " << EC.message() << "\n";
219 std::unique_ptr<MemoryBuffer> Buff = std::move(BuffOrErr.get());
221 std::unique_ptr<MachOObjectFile> MachOOF = std::move(
222 ObjectFile::createMachOObjectFile(Buff.get()->getMemBufferRef()).get());
224 DisassembleInputMachO2(Filename, MachOOF.get());
227 static void DisassembleInputMachO2(StringRef Filename,
228 MachOObjectFile *MachOOF) {
229 const char *McpuDefault = nullptr;
230 const Target *ThumbTarget = nullptr;
231 const Target *TheTarget = GetTarget(MachOOF, &McpuDefault, &ThumbTarget);
233 // GetTarget prints out stuff.
236 if (MCPU.empty() && McpuDefault)
239 std::unique_ptr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo());
240 std::unique_ptr<MCInstrAnalysis> InstrAnalysis(
241 TheTarget->createMCInstrAnalysis(InstrInfo.get()));
242 std::unique_ptr<const MCInstrInfo> ThumbInstrInfo;
243 std::unique_ptr<MCInstrAnalysis> ThumbInstrAnalysis;
245 ThumbInstrInfo.reset(ThumbTarget->createMCInstrInfo());
246 ThumbInstrAnalysis.reset(
247 ThumbTarget->createMCInstrAnalysis(ThumbInstrInfo.get()));
250 // Package up features to be passed to target/subtarget
251 std::string FeaturesStr;
253 SubtargetFeatures Features;
254 for (unsigned i = 0; i != MAttrs.size(); ++i)
255 Features.AddFeature(MAttrs[i]);
256 FeaturesStr = Features.getString();
259 // Set up disassembler.
260 std::unique_ptr<const MCRegisterInfo> MRI(
261 TheTarget->createMCRegInfo(TripleName));
262 std::unique_ptr<const MCAsmInfo> AsmInfo(
263 TheTarget->createMCAsmInfo(*MRI, TripleName));
264 std::unique_ptr<const MCSubtargetInfo> STI(
265 TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
266 MCContext Ctx(AsmInfo.get(), MRI.get(), nullptr);
267 std::unique_ptr<const MCDisassembler> DisAsm(
268 TheTarget->createMCDisassembler(*STI, Ctx));
269 int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
270 std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
271 AsmPrinterVariant, *AsmInfo, *InstrInfo, *MRI, *STI));
273 if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
274 errs() << "error: couldn't initialize disassembler for target "
275 << TripleName << '\n';
279 // Set up thumb disassembler.
280 std::unique_ptr<const MCRegisterInfo> ThumbMRI;
281 std::unique_ptr<const MCAsmInfo> ThumbAsmInfo;
282 std::unique_ptr<const MCSubtargetInfo> ThumbSTI;
283 std::unique_ptr<const MCDisassembler> ThumbDisAsm;
284 std::unique_ptr<MCInstPrinter> ThumbIP;
285 std::unique_ptr<MCContext> ThumbCtx;
287 ThumbMRI.reset(ThumbTarget->createMCRegInfo(ThumbTripleName));
289 ThumbTarget->createMCAsmInfo(*ThumbMRI, ThumbTripleName));
291 ThumbTarget->createMCSubtargetInfo(ThumbTripleName, MCPU, FeaturesStr));
292 ThumbCtx.reset(new MCContext(ThumbAsmInfo.get(), ThumbMRI.get(), nullptr));
293 ThumbDisAsm.reset(ThumbTarget->createMCDisassembler(*ThumbSTI, *ThumbCtx));
294 int ThumbAsmPrinterVariant = ThumbAsmInfo->getAssemblerDialect();
295 ThumbIP.reset(ThumbTarget->createMCInstPrinter(
296 ThumbAsmPrinterVariant, *ThumbAsmInfo, *ThumbInstrInfo, *ThumbMRI,
300 if (ThumbTarget && (!ThumbInstrAnalysis || !ThumbAsmInfo || !ThumbSTI ||
301 !ThumbDisAsm || !ThumbIP)) {
302 errs() << "error: couldn't initialize disassembler for target "
303 << ThumbTripleName << '\n';
307 outs() << '\n' << Filename << ":\n\n";
309 MachO::mach_header Header = MachOOF->getHeader();
311 // FIXME: Using the -cfg command line option, this code used to be able to
312 // annotate relocations with the referenced symbol's name, and if this was
313 // inside a __[cf]string section, the data it points to. This is now replaced
314 // by the upcoming MCSymbolizer, which needs the appropriate setup done above.
315 std::vector<SectionRef> Sections;
316 std::vector<SymbolRef> Symbols;
317 SmallVector<uint64_t, 8> FoundFns;
318 uint64_t BaseSegmentAddress;
320 getSectionsAndSymbols(Header, MachOOF, Sections, Symbols, FoundFns,
323 // Sort the symbols by address, just in case they didn't come in that way.
324 std::sort(Symbols.begin(), Symbols.end(), SymbolSorter());
326 // Build a data in code table that is sorted on by the address of each entry.
327 uint64_t BaseAddress = 0;
328 if (Header.filetype == MachO::MH_OBJECT)
329 Sections[0].getAddress(BaseAddress);
331 BaseAddress = BaseSegmentAddress;
333 for (dice_iterator DI = MachOOF->begin_dices(), DE = MachOOF->end_dices();
336 DI->getOffset(Offset);
337 Dices.push_back(std::make_pair(BaseAddress + Offset, *DI));
339 array_pod_sort(Dices.begin(), Dices.end());
342 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
344 raw_ostream &DebugOut = nulls();
347 std::unique_ptr<DIContext> diContext;
348 ObjectFile *DbgObj = MachOOF;
349 // Try to find debug info and set up the DIContext for it.
351 // A separate DSym file path was specified, parse it as a macho file,
352 // get the sections and supply it to the section name parsing machinery.
353 if (!DSYMFile.empty()) {
354 ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
355 MemoryBuffer::getFileOrSTDIN(DSYMFile);
356 if (std::error_code EC = BufOrErr.getError()) {
357 errs() << "llvm-objdump: " << Filename << ": " << EC.message() << '\n';
361 ObjectFile::createMachOObjectFile(BufOrErr.get()->getMemBufferRef())
366 // Setup the DIContext
367 diContext.reset(DIContext::getDWARFContext(*DbgObj));
370 for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
372 bool SectIsText = false;
373 Sections[SectIdx].isText(SectIsText);
374 if (SectIsText == false)
378 if (Sections[SectIdx].getName(SectName) ||
379 SectName != "__text")
380 continue; // Skip non-text sections
382 DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl();
384 StringRef SegmentName = MachOOF->getSectionFinalSegmentName(DR);
385 if (SegmentName != "__TEXT")
389 Sections[SectIdx].getContents(Bytes);
390 StringRefMemoryObject memoryObject(Bytes);
391 bool symbolTableWorked = false;
393 // Parse relocations.
394 std::vector<std::pair<uint64_t, SymbolRef>> Relocs;
395 for (const RelocationRef &Reloc : Sections[SectIdx].relocations()) {
396 uint64_t RelocOffset, SectionAddress;
397 Reloc.getOffset(RelocOffset);
398 Sections[SectIdx].getAddress(SectionAddress);
399 RelocOffset -= SectionAddress;
401 symbol_iterator RelocSym = Reloc.getSymbol();
403 Relocs.push_back(std::make_pair(RelocOffset, *RelocSym));
405 array_pod_sort(Relocs.begin(), Relocs.end());
407 // Disassemble symbol by symbol.
408 for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
410 Symbols[SymIdx].getName(SymName);
413 Symbols[SymIdx].getType(ST);
414 if (ST != SymbolRef::ST_Function)
417 // Make sure the symbol is defined in this section.
418 bool containsSym = false;
419 Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym);
423 // Start at the address of the symbol relative to the section's address.
424 uint64_t SectionAddress = 0;
426 Sections[SectIdx].getAddress(SectionAddress);
427 Symbols[SymIdx].getAddress(Start);
428 Start -= SectionAddress;
430 // Stop disassembling either at the beginning of the next symbol or at
431 // the end of the section.
432 bool containsNextSym = false;
433 uint64_t NextSym = 0;
434 uint64_t NextSymIdx = SymIdx+1;
435 while (Symbols.size() > NextSymIdx) {
436 SymbolRef::Type NextSymType;
437 Symbols[NextSymIdx].getType(NextSymType);
438 if (NextSymType == SymbolRef::ST_Function) {
439 Sections[SectIdx].containsSymbol(Symbols[NextSymIdx],
441 Symbols[NextSymIdx].getAddress(NextSym);
442 NextSym -= SectionAddress;
449 Sections[SectIdx].getSize(SectSize);
450 uint64_t End = containsNextSym ? NextSym : SectSize;
453 symbolTableWorked = true;
455 DataRefImpl Symb = Symbols[SymIdx].getRawDataRefImpl();
457 (MachOOF->getSymbolFlags(Symb) & SymbolRef::SF_Thumb) && ThumbTarget;
459 outs() << SymName << ":\n";
461 for (uint64_t Index = Start; Index < End; Index += Size) {
464 uint64_t SectAddress = 0;
465 Sections[SectIdx].getAddress(SectAddress);
466 outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
468 // Check the data in code table here to see if this is data not an
469 // instruction to be disassembled.
471 Dice.push_back(std::make_pair(SectAddress + Index, DiceRef()));
472 dice_table_iterator DTI = std::search(Dices.begin(), Dices.end(),
473 Dice.begin(), Dice.end(),
474 compareDiceTableEntries);
475 if (DTI != Dices.end()){
477 DTI->second.getLength(Length);
478 DumpBytes(StringRef(Bytes.data() + Index, Length));
480 DTI->second.getKind(Kind);
481 DumpDataInCode(Bytes.data() + Index, Length, Kind);
487 gotInst = ThumbDisAsm->getInstruction(Inst, Size, memoryObject, Index,
490 gotInst = DisAsm->getInstruction(Inst, Size, memoryObject, Index,
493 DumpBytes(StringRef(Bytes.data() + Index, Size));
495 ThumbIP->printInst(&Inst, outs(), "");
497 IP->printInst(&Inst, outs(), "");
502 diContext->getLineInfoForAddress(SectAddress + Index);
503 // Print valid line info if it changed.
504 if (dli != lastLine && dli.Line != 0)
505 outs() << "\t## " << dli.FileName << ':' << dli.Line << ':'
511 errs() << "llvm-objdump: warning: invalid instruction encoding\n";
513 Size = 1; // skip illegible bytes
517 if (!symbolTableWorked) {
518 // Reading the symbol table didn't work, disassemble the whole section.
519 uint64_t SectAddress;
520 Sections[SectIdx].getAddress(SectAddress);
522 Sections[SectIdx].getSize(SectSize);
524 for (uint64_t Index = 0; Index < SectSize; Index += InstSize) {
527 if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index,
528 DebugOut, nulls())) {
529 outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
530 DumpBytes(StringRef(Bytes.data() + Index, InstSize));
531 IP->printInst(&Inst, outs(), "");
534 errs() << "llvm-objdump: warning: invalid instruction encoding\n";
536 InstSize = 1; // skip illegible bytes
544 //===----------------------------------------------------------------------===//
545 // __compact_unwind section dumping
546 //===----------------------------------------------------------------------===//
550 template <typename T> static uint64_t readNext(const char *&Buf) {
551 using llvm::support::little;
552 using llvm::support::unaligned;
554 uint64_t Val = support::endian::read<T, little, unaligned>(Buf);
559 struct CompactUnwindEntry {
560 uint32_t OffsetInSection;
562 uint64_t FunctionAddr;
564 uint32_t CompactEncoding;
565 uint64_t PersonalityAddr;
568 RelocationRef FunctionReloc;
569 RelocationRef PersonalityReloc;
570 RelocationRef LSDAReloc;
572 CompactUnwindEntry(StringRef Contents, unsigned Offset, bool Is64)
573 : OffsetInSection(Offset) {
575 read<uint64_t>(Contents.data() + Offset);
577 read<uint32_t>(Contents.data() + Offset);
581 template<typename UIntPtr>
582 void read(const char *Buf) {
583 FunctionAddr = readNext<UIntPtr>(Buf);
584 Length = readNext<uint32_t>(Buf);
585 CompactEncoding = readNext<uint32_t>(Buf);
586 PersonalityAddr = readNext<UIntPtr>(Buf);
587 LSDAAddr = readNext<UIntPtr>(Buf);
592 /// Given a relocation from __compact_unwind, consisting of the RelocationRef
593 /// and data being relocated, determine the best base Name and Addend to use for
594 /// display purposes.
596 /// 1. An Extern relocation will directly reference a symbol (and the data is
597 /// then already an addend), so use that.
598 /// 2. Otherwise the data is an offset in the object file's layout; try to find
599 // a symbol before it in the same section, and use the offset from there.
600 /// 3. Finally, if all that fails, fall back to an offset from the start of the
601 /// referenced section.
602 static void findUnwindRelocNameAddend(const MachOObjectFile *Obj,
603 std::map<uint64_t, SymbolRef> &Symbols,
604 const RelocationRef &Reloc,
606 StringRef &Name, uint64_t &Addend) {
607 if (Reloc.getSymbol() != Obj->symbol_end()) {
608 Reloc.getSymbol()->getName(Name);
613 auto RE = Obj->getRelocation(Reloc.getRawDataRefImpl());
614 SectionRef RelocSection = Obj->getRelocationSection(RE);
616 uint64_t SectionAddr;
617 RelocSection.getAddress(SectionAddr);
619 auto Sym = Symbols.upper_bound(Addr);
620 if (Sym == Symbols.begin()) {
621 // The first symbol in the object is after this reference, the best we can
622 // do is section-relative notation.
623 RelocSection.getName(Name);
624 Addend = Addr - SectionAddr;
628 // Go back one so that SymbolAddress <= Addr.
631 section_iterator SymSection = Obj->section_end();
632 Sym->second.getSection(SymSection);
633 if (RelocSection == *SymSection) {
634 // There's a valid symbol in the same section before this reference.
635 Sym->second.getName(Name);
636 Addend = Addr - Sym->first;
640 // There is a symbol before this reference, but it's in a different
641 // section. Probably not helpful to mention it, so use the section name.
642 RelocSection.getName(Name);
643 Addend = Addr - SectionAddr;
646 static void printUnwindRelocDest(const MachOObjectFile *Obj,
647 std::map<uint64_t, SymbolRef> &Symbols,
648 const RelocationRef &Reloc,
653 if (!Reloc.getObjectFile())
656 findUnwindRelocNameAddend(Obj, Symbols, Reloc, Addr, Name, Addend);
660 outs() << " + " << format("0x%" PRIx64, Addend);
664 printMachOCompactUnwindSection(const MachOObjectFile *Obj,
665 std::map<uint64_t, SymbolRef> &Symbols,
666 const SectionRef &CompactUnwind) {
668 assert(Obj->isLittleEndian() &&
669 "There should not be a big-endian .o with __compact_unwind");
671 bool Is64 = Obj->is64Bit();
672 uint32_t PointerSize = Is64 ? sizeof(uint64_t) : sizeof(uint32_t);
673 uint32_t EntrySize = 3 * PointerSize + 2 * sizeof(uint32_t);
676 CompactUnwind.getContents(Contents);
678 SmallVector<CompactUnwindEntry, 4> CompactUnwinds;
680 // First populate the initial raw offsets, encodings and so on from the entry.
681 for (unsigned Offset = 0; Offset < Contents.size(); Offset += EntrySize) {
682 CompactUnwindEntry Entry(Contents.data(), Offset, Is64);
683 CompactUnwinds.push_back(Entry);
686 // Next we need to look at the relocations to find out what objects are
687 // actually being referred to.
688 for (const RelocationRef &Reloc : CompactUnwind.relocations()) {
689 uint64_t RelocAddress;
690 Reloc.getOffset(RelocAddress);
692 uint32_t EntryIdx = RelocAddress / EntrySize;
693 uint32_t OffsetInEntry = RelocAddress - EntryIdx * EntrySize;
694 CompactUnwindEntry &Entry = CompactUnwinds[EntryIdx];
696 if (OffsetInEntry == 0)
697 Entry.FunctionReloc = Reloc;
698 else if (OffsetInEntry == PointerSize + 2 * sizeof(uint32_t))
699 Entry.PersonalityReloc = Reloc;
700 else if (OffsetInEntry == 2 * PointerSize + 2 * sizeof(uint32_t))
701 Entry.LSDAReloc = Reloc;
703 llvm_unreachable("Unexpected relocation in __compact_unwind section");
706 // Finally, we're ready to print the data we've gathered.
707 outs() << "Contents of __compact_unwind section:\n";
708 for (auto &Entry : CompactUnwinds) {
709 outs() << " Entry at offset "
710 << format("0x%" PRIx32, Entry.OffsetInSection) << ":\n";
712 // 1. Start of the region this entry applies to.
714 << format("0x%" PRIx64, Entry.FunctionAddr) << ' ';
715 printUnwindRelocDest(Obj, Symbols, Entry.FunctionReloc,
719 // 2. Length of the region this entry applies to.
720 outs() << " length: "
721 << format("0x%" PRIx32, Entry.Length) << '\n';
722 // 3. The 32-bit compact encoding.
723 outs() << " compact encoding: "
724 << format("0x%08" PRIx32, Entry.CompactEncoding) << '\n';
726 // 4. The personality function, if present.
727 if (Entry.PersonalityReloc.getObjectFile()) {
728 outs() << " personality function: "
729 << format("0x%" PRIx64, Entry.PersonalityAddr) << ' ';
730 printUnwindRelocDest(Obj, Symbols, Entry.PersonalityReloc,
731 Entry.PersonalityAddr);
735 // 5. This entry's language-specific data area.
736 if (Entry.LSDAReloc.getObjectFile()) {
738 << format("0x%" PRIx64, Entry.LSDAAddr) << ' ';
739 printUnwindRelocDest(Obj, Symbols, Entry.LSDAReloc, Entry.LSDAAddr);
745 //===----------------------------------------------------------------------===//
746 // __unwind_info section dumping
747 //===----------------------------------------------------------------------===//
749 static void printRegularSecondLevelUnwindPage(const char *PageStart) {
750 const char *Pos = PageStart;
751 uint32_t Kind = readNext<uint32_t>(Pos);
753 assert(Kind == 2 && "kind for a regular 2nd level index should be 2");
755 uint16_t EntriesStart = readNext<uint16_t>(Pos);
756 uint16_t NumEntries = readNext<uint16_t>(Pos);
758 Pos = PageStart + EntriesStart;
759 for (unsigned i = 0; i < NumEntries; ++i) {
760 uint32_t FunctionOffset = readNext<uint32_t>(Pos);
761 uint32_t Encoding = readNext<uint32_t>(Pos);
763 outs() << " [" << i << "]: "
764 << "function offset="
765 << format("0x%08" PRIx32, FunctionOffset) << ", "
767 << format("0x%08" PRIx32, Encoding)
772 static void printCompressedSecondLevelUnwindPage(
773 const char *PageStart, uint32_t FunctionBase,
774 const SmallVectorImpl<uint32_t> &CommonEncodings) {
775 const char *Pos = PageStart;
776 uint32_t Kind = readNext<uint32_t>(Pos);
778 assert(Kind == 3 && "kind for a compressed 2nd level index should be 3");
780 uint16_t EntriesStart = readNext<uint16_t>(Pos);
781 uint16_t NumEntries = readNext<uint16_t>(Pos);
783 uint16_t EncodingsStart = readNext<uint16_t>(Pos);
784 readNext<uint16_t>(Pos);
785 const auto *PageEncodings = reinterpret_cast<const support::ulittle32_t *>(
786 PageStart + EncodingsStart);
788 Pos = PageStart + EntriesStart;
789 for (unsigned i = 0; i < NumEntries; ++i) {
790 uint32_t Entry = readNext<uint32_t>(Pos);
791 uint32_t FunctionOffset = FunctionBase + (Entry & 0xffffff);
792 uint32_t EncodingIdx = Entry >> 24;
795 if (EncodingIdx < CommonEncodings.size())
796 Encoding = CommonEncodings[EncodingIdx];
798 Encoding = PageEncodings[EncodingIdx - CommonEncodings.size()];
800 outs() << " [" << i << "]: "
801 << "function offset="
802 << format("0x%08" PRIx32, FunctionOffset) << ", "
803 << "encoding[" << EncodingIdx << "]="
804 << format("0x%08" PRIx32, Encoding)
810 printMachOUnwindInfoSection(const MachOObjectFile *Obj,
811 std::map<uint64_t, SymbolRef> &Symbols,
812 const SectionRef &UnwindInfo) {
814 assert(Obj->isLittleEndian() &&
815 "There should not be a big-endian .o with __unwind_info");
817 outs() << "Contents of __unwind_info section:\n";
820 UnwindInfo.getContents(Contents);
821 const char *Pos = Contents.data();
823 //===----------------------------------
825 //===----------------------------------
827 uint32_t Version = readNext<uint32_t>(Pos);
828 outs() << " Version: "
829 << format("0x%" PRIx32, Version) << '\n';
830 assert(Version == 1 && "only understand version 1");
832 uint32_t CommonEncodingsStart = readNext<uint32_t>(Pos);
833 outs() << " Common encodings array section offset: "
834 << format("0x%" PRIx32, CommonEncodingsStart) << '\n';
835 uint32_t NumCommonEncodings = readNext<uint32_t>(Pos);
836 outs() << " Number of common encodings in array: "
837 << format("0x%" PRIx32, NumCommonEncodings) << '\n';
839 uint32_t PersonalitiesStart = readNext<uint32_t>(Pos);
840 outs() << " Personality function array section offset: "
841 << format("0x%" PRIx32, PersonalitiesStart) << '\n';
842 uint32_t NumPersonalities = readNext<uint32_t>(Pos);
843 outs() << " Number of personality functions in array: "
844 << format("0x%" PRIx32, NumPersonalities) << '\n';
846 uint32_t IndicesStart = readNext<uint32_t>(Pos);
847 outs() << " Index array section offset: "
848 << format("0x%" PRIx32, IndicesStart) << '\n';
849 uint32_t NumIndices = readNext<uint32_t>(Pos);
850 outs() << " Number of indices in array: "
851 << format("0x%" PRIx32, NumIndices) << '\n';
853 //===----------------------------------
854 // A shared list of common encodings
855 //===----------------------------------
857 // These occupy indices in the range [0, N] whenever an encoding is referenced
858 // from a compressed 2nd level index table. In practice the linker only
859 // creates ~128 of these, so that indices are available to embed encodings in
860 // the 2nd level index.
862 SmallVector<uint32_t, 64> CommonEncodings;
863 outs() << " Common encodings: (count = " << NumCommonEncodings << ")\n";
864 Pos = Contents.data() + CommonEncodingsStart;
865 for (unsigned i = 0; i < NumCommonEncodings; ++i) {
866 uint32_t Encoding = readNext<uint32_t>(Pos);
867 CommonEncodings.push_back(Encoding);
869 outs() << " encoding[" << i << "]: " << format("0x%08" PRIx32, Encoding)
874 //===----------------------------------
875 // Personality functions used in this executable
876 //===----------------------------------
878 // There should be only a handful of these (one per source language,
879 // roughly). Particularly since they only get 2 bits in the compact encoding.
881 outs() << " Personality functions: (count = " << NumPersonalities << ")\n";
882 Pos = Contents.data() + PersonalitiesStart;
883 for (unsigned i = 0; i < NumPersonalities; ++i) {
884 uint32_t PersonalityFn = readNext<uint32_t>(Pos);
885 outs() << " personality[" << i + 1
886 << "]: " << format("0x%08" PRIx32, PersonalityFn) << '\n';
889 //===----------------------------------
890 // The level 1 index entries
891 //===----------------------------------
893 // These specify an approximate place to start searching for the more detailed
894 // information, sorted by PC.
897 uint32_t FunctionOffset;
898 uint32_t SecondLevelPageStart;
902 SmallVector<IndexEntry, 4> IndexEntries;
904 outs() << " Top level indices: (count = " << NumIndices << ")\n";
905 Pos = Contents.data() + IndicesStart;
906 for (unsigned i = 0; i < NumIndices; ++i) {
909 Entry.FunctionOffset = readNext<uint32_t>(Pos);
910 Entry.SecondLevelPageStart = readNext<uint32_t>(Pos);
911 Entry.LSDAStart = readNext<uint32_t>(Pos);
912 IndexEntries.push_back(Entry);
914 outs() << " [" << i << "]: "
915 << "function offset="
916 << format("0x%08" PRIx32, Entry.FunctionOffset) << ", "
917 << "2nd level page offset="
918 << format("0x%08" PRIx32, Entry.SecondLevelPageStart) << ", "
920 << format("0x%08" PRIx32, Entry.LSDAStart) << '\n';
924 //===----------------------------------
925 // Next come the LSDA tables
926 //===----------------------------------
928 // The LSDA layout is rather implicit: it's a contiguous array of entries from
929 // the first top-level index's LSDAOffset to the last (sentinel).
931 outs() << " LSDA descriptors:\n";
932 Pos = Contents.data() + IndexEntries[0].LSDAStart;
933 int NumLSDAs = (IndexEntries.back().LSDAStart - IndexEntries[0].LSDAStart) /
934 (2 * sizeof(uint32_t));
935 for (int i = 0; i < NumLSDAs; ++i) {
936 uint32_t FunctionOffset = readNext<uint32_t>(Pos);
937 uint32_t LSDAOffset = readNext<uint32_t>(Pos);
938 outs() << " [" << i << "]: "
939 << "function offset="
940 << format("0x%08" PRIx32, FunctionOffset) << ", "
942 << format("0x%08" PRIx32, LSDAOffset) << '\n';
945 //===----------------------------------
946 // Finally, the 2nd level indices
947 //===----------------------------------
949 // Generally these are 4K in size, and have 2 possible forms:
950 // + Regular stores up to 511 entries with disparate encodings
951 // + Compressed stores up to 1021 entries if few enough compact encoding
953 outs() << " Second level indices:\n";
954 for (unsigned i = 0; i < IndexEntries.size() - 1; ++i) {
955 // The final sentinel top-level index has no associated 2nd level page
956 if (IndexEntries[i].SecondLevelPageStart == 0)
959 outs() << " Second level index[" << i << "]: "
960 << "offset in section="
961 << format("0x%08" PRIx32, IndexEntries[i].SecondLevelPageStart)
963 << "base function offset="
964 << format("0x%08" PRIx32, IndexEntries[i].FunctionOffset) << '\n';
966 Pos = Contents.data() + IndexEntries[i].SecondLevelPageStart;
967 uint32_t Kind = *reinterpret_cast<const support::ulittle32_t *>(Pos);
969 printRegularSecondLevelUnwindPage(Pos);
971 printCompressedSecondLevelUnwindPage(Pos, IndexEntries[i].FunctionOffset,
974 llvm_unreachable("Do not know how to print this kind of 2nd level page");
979 void llvm::printMachOUnwindInfo(const MachOObjectFile *Obj) {
980 std::map<uint64_t, SymbolRef> Symbols;
981 for (const SymbolRef &SymRef : Obj->symbols()) {
982 // Discard any undefined or absolute symbols. They're not going to take part
983 // in the convenience lookup for unwind info and just take up resources.
984 section_iterator Section = Obj->section_end();
985 SymRef.getSection(Section);
986 if (Section == Obj->section_end())
990 SymRef.getAddress(Addr);
991 Symbols.insert(std::make_pair(Addr, SymRef));
994 for (const SectionRef &Section : Obj->sections()) {
996 Section.getName(SectName);
997 if (SectName == "__compact_unwind")
998 printMachOCompactUnwindSection(Obj, Symbols, Section);
999 else if (SectName == "__unwind_info")
1000 printMachOUnwindInfoSection(Obj, Symbols, Section);
1001 else if (SectName == "__eh_frame")
1002 outs() << "llvm-objdump: warning: unhandled __eh_frame section\n";
1007 static void PrintMachHeader(uint32_t magic, uint32_t cputype,
1008 uint32_t cpusubtype, uint32_t filetype,
1009 uint32_t ncmds, uint32_t sizeofcmds, uint32_t flags,
1011 outs() << "Mach header\n";
1012 outs() << " magic cputype cpusubtype caps filetype ncmds "
1013 "sizeofcmds flags\n";
1015 if (magic == MachO::MH_MAGIC)
1016 outs() << " MH_MAGIC";
1017 else if (magic == MachO::MH_MAGIC_64)
1018 outs() << "MH_MAGIC_64";
1020 outs() << format(" 0x%08" PRIx32, magic);
1022 case MachO::CPU_TYPE_I386:
1024 switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
1025 case MachO::CPU_SUBTYPE_I386_ALL:
1029 outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
1033 case MachO::CPU_TYPE_X86_64:
1034 outs() << " X86_64";
1035 case MachO::CPU_SUBTYPE_X86_64_ALL:
1038 case MachO::CPU_SUBTYPE_X86_64_H:
1039 outs() << " Haswell";
1040 outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
1042 case MachO::CPU_TYPE_ARM:
1044 switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
1045 case MachO::CPU_SUBTYPE_ARM_ALL:
1048 case MachO::CPU_SUBTYPE_ARM_V4T:
1051 case MachO::CPU_SUBTYPE_ARM_V5TEJ:
1054 case MachO::CPU_SUBTYPE_ARM_XSCALE:
1055 outs() << " XSCALE";
1057 case MachO::CPU_SUBTYPE_ARM_V6:
1060 case MachO::CPU_SUBTYPE_ARM_V6M:
1063 case MachO::CPU_SUBTYPE_ARM_V7:
1066 case MachO::CPU_SUBTYPE_ARM_V7EM:
1069 case MachO::CPU_SUBTYPE_ARM_V7K:
1072 case MachO::CPU_SUBTYPE_ARM_V7M:
1075 case MachO::CPU_SUBTYPE_ARM_V7S:
1079 outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
1083 case MachO::CPU_TYPE_ARM64:
1085 switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
1086 case MachO::CPU_SUBTYPE_ARM64_ALL:
1090 outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
1094 case MachO::CPU_TYPE_POWERPC:
1096 switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
1097 case MachO::CPU_SUBTYPE_POWERPC_ALL:
1101 outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
1105 case MachO::CPU_TYPE_POWERPC64:
1107 switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
1108 case MachO::CPU_SUBTYPE_POWERPC_ALL:
1112 outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
1117 if ((cpusubtype & MachO::CPU_SUBTYPE_MASK) == MachO::CPU_SUBTYPE_LIB64) {
1120 outs() << format(" 0x%02" PRIx32,
1121 (cpusubtype & MachO::CPU_SUBTYPE_MASK) >> 24);
1124 case MachO::MH_OBJECT:
1125 outs() << " OBJECT";
1127 case MachO::MH_EXECUTE:
1128 outs() << " EXECUTE";
1130 case MachO::MH_FVMLIB:
1131 outs() << " FVMLIB";
1133 case MachO::MH_CORE:
1136 case MachO::MH_PRELOAD:
1137 outs() << " PRELOAD";
1139 case MachO::MH_DYLIB:
1142 case MachO::MH_DYLIB_STUB:
1143 outs() << " DYLIB_STUB";
1145 case MachO::MH_DYLINKER:
1146 outs() << " DYLINKER";
1148 case MachO::MH_BUNDLE:
1149 outs() << " BUNDLE";
1151 case MachO::MH_DSYM:
1154 case MachO::MH_KEXT_BUNDLE:
1155 outs() << " KEXTBUNDLE";
1158 outs() << format(" %10u", filetype);
1161 outs() << format(" %5u", ncmds);
1162 outs() << format(" %10u", sizeofcmds);
1164 if (f & MachO::MH_NOUNDEFS) {
1165 outs() << " NOUNDEFS";
1166 f &= ~MachO::MH_NOUNDEFS;
1168 if (f & MachO::MH_INCRLINK) {
1169 outs() << " INCRLINK";
1170 f &= ~MachO::MH_INCRLINK;
1172 if (f & MachO::MH_DYLDLINK) {
1173 outs() << " DYLDLINK";
1174 f &= ~MachO::MH_DYLDLINK;
1176 if (f & MachO::MH_BINDATLOAD) {
1177 outs() << " BINDATLOAD";
1178 f &= ~MachO::MH_BINDATLOAD;
1180 if (f & MachO::MH_PREBOUND) {
1181 outs() << " PREBOUND";
1182 f &= ~MachO::MH_PREBOUND;
1184 if (f & MachO::MH_SPLIT_SEGS) {
1185 outs() << " SPLIT_SEGS";
1186 f &= ~MachO::MH_SPLIT_SEGS;
1188 if (f & MachO::MH_LAZY_INIT) {
1189 outs() << " LAZY_INIT";
1190 f &= ~MachO::MH_LAZY_INIT;
1192 if (f & MachO::MH_TWOLEVEL) {
1193 outs() << " TWOLEVEL";
1194 f &= ~MachO::MH_TWOLEVEL;
1196 if (f & MachO::MH_FORCE_FLAT) {
1197 outs() << " FORCE_FLAT";
1198 f &= ~MachO::MH_FORCE_FLAT;
1200 if (f & MachO::MH_NOMULTIDEFS) {
1201 outs() << " NOMULTIDEFS";
1202 f &= ~MachO::MH_NOMULTIDEFS;
1204 if (f & MachO::MH_NOFIXPREBINDING) {
1205 outs() << " NOFIXPREBINDING";
1206 f &= ~MachO::MH_NOFIXPREBINDING;
1208 if (f & MachO::MH_PREBINDABLE) {
1209 outs() << " PREBINDABLE";
1210 f &= ~MachO::MH_PREBINDABLE;
1212 if (f & MachO::MH_ALLMODSBOUND) {
1213 outs() << " ALLMODSBOUND";
1214 f &= ~MachO::MH_ALLMODSBOUND;
1216 if (f & MachO::MH_SUBSECTIONS_VIA_SYMBOLS) {
1217 outs() << " SUBSECTIONS_VIA_SYMBOLS";
1218 f &= ~MachO::MH_SUBSECTIONS_VIA_SYMBOLS;
1220 if (f & MachO::MH_CANONICAL) {
1221 outs() << " CANONICAL";
1222 f &= ~MachO::MH_CANONICAL;
1224 if (f & MachO::MH_WEAK_DEFINES) {
1225 outs() << " WEAK_DEFINES";
1226 f &= ~MachO::MH_WEAK_DEFINES;
1228 if (f & MachO::MH_BINDS_TO_WEAK) {
1229 outs() << " BINDS_TO_WEAK";
1230 f &= ~MachO::MH_BINDS_TO_WEAK;
1232 if (f & MachO::MH_ALLOW_STACK_EXECUTION) {
1233 outs() << " ALLOW_STACK_EXECUTION";
1234 f &= ~MachO::MH_ALLOW_STACK_EXECUTION;
1236 if (f & MachO::MH_DEAD_STRIPPABLE_DYLIB) {
1237 outs() << " DEAD_STRIPPABLE_DYLIB";
1238 f &= ~MachO::MH_DEAD_STRIPPABLE_DYLIB;
1240 if (f & MachO::MH_PIE) {
1242 f &= ~MachO::MH_PIE;
1244 if (f & MachO::MH_NO_REEXPORTED_DYLIBS) {
1245 outs() << " NO_REEXPORTED_DYLIBS";
1246 f &= ~MachO::MH_NO_REEXPORTED_DYLIBS;
1248 if (f & MachO::MH_HAS_TLV_DESCRIPTORS) {
1249 outs() << " MH_HAS_TLV_DESCRIPTORS";
1250 f &= ~MachO::MH_HAS_TLV_DESCRIPTORS;
1252 if (f & MachO::MH_NO_HEAP_EXECUTION) {
1253 outs() << " MH_NO_HEAP_EXECUTION";
1254 f &= ~MachO::MH_NO_HEAP_EXECUTION;
1256 if (f & MachO::MH_APP_EXTENSION_SAFE) {
1257 outs() << " APP_EXTENSION_SAFE";
1258 f &= ~MachO::MH_APP_EXTENSION_SAFE;
1260 if (f != 0 || flags == 0)
1261 outs() << format(" 0x%08" PRIx32, f);
1263 outs() << format(" 0x%08" PRIx32, magic);
1264 outs() << format(" %7d", cputype);
1265 outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
1266 outs() << format(" 0x%02" PRIx32,
1267 (cpusubtype & MachO::CPU_SUBTYPE_MASK) >> 24);
1268 outs() << format(" %10u", filetype);
1269 outs() << format(" %5u", ncmds);
1270 outs() << format(" %10u", sizeofcmds);
1271 outs() << format(" 0x%08" PRIx32, flags);
1276 static void PrintSegmentCommand(uint32_t cmd, uint32_t cmdsize,
1277 StringRef SegName, uint64_t vmaddr,
1278 uint64_t vmsize, uint64_t fileoff,
1279 uint64_t filesize, uint32_t maxprot,
1280 uint32_t initprot, uint32_t nsects,
1281 uint32_t flags, uint32_t object_size,
1283 uint64_t expected_cmdsize;
1284 if (cmd == MachO::LC_SEGMENT) {
1285 outs() << " cmd LC_SEGMENT\n";
1286 expected_cmdsize = nsects;
1287 expected_cmdsize *= sizeof(struct MachO::section);
1288 expected_cmdsize += sizeof(struct MachO::segment_command);
1290 outs() << " cmd LC_SEGMENT_64\n";
1291 expected_cmdsize = nsects;
1292 expected_cmdsize *= sizeof(struct MachO::section_64);
1293 expected_cmdsize += sizeof(struct MachO::segment_command_64);
1295 outs() << " cmdsize " << cmdsize;
1296 if (cmdsize != expected_cmdsize)
1297 outs() << " Inconsistent size\n";
1300 outs() << " segname " << SegName << "\n";
1301 if (cmd == MachO::LC_SEGMENT_64) {
1302 outs() << " vmaddr " << format("0x%016" PRIx64, vmaddr) << "\n";
1303 outs() << " vmsize " << format("0x%016" PRIx64, vmsize) << "\n";
1305 outs() << " vmaddr " << format("0x%08" PRIx32, vmaddr) << "\n";
1306 outs() << " vmsize " << format("0x%08" PRIx32, vmsize) << "\n";
1308 outs() << " fileoff " << fileoff;
1309 if (fileoff > object_size)
1310 outs() << " (past end of file)\n";
1313 outs() << " filesize " << filesize;
1314 if (fileoff + filesize > object_size)
1315 outs() << " (past end of file)\n";
1320 ~(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE |
1321 MachO::VM_PROT_EXECUTE)) != 0)
1322 outs() << " maxprot ?" << format("0x%08" PRIx32, maxprot) << "\n";
1324 if (maxprot & MachO::VM_PROT_READ)
1325 outs() << " maxprot r";
1327 outs() << " maxprot -";
1328 if (maxprot & MachO::VM_PROT_WRITE)
1332 if (maxprot & MachO::VM_PROT_EXECUTE)
1338 ~(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE |
1339 MachO::VM_PROT_EXECUTE)) != 0)
1340 outs() << " initprot ?" << format("0x%08" PRIx32, initprot) << "\n";
1342 if (initprot & MachO::VM_PROT_READ)
1343 outs() << " initprot r";
1345 outs() << " initprot -";
1346 if (initprot & MachO::VM_PROT_WRITE)
1350 if (initprot & MachO::VM_PROT_EXECUTE)
1356 outs() << " maxprot " << format("0x%08" PRIx32, maxprot) << "\n";
1357 outs() << " initprot " << format("0x%08" PRIx32, initprot) << "\n";
1359 outs() << " nsects " << nsects << "\n";
1363 outs() << " (none)\n";
1365 if (flags & MachO::SG_HIGHVM) {
1366 outs() << " HIGHVM";
1367 flags &= ~MachO::SG_HIGHVM;
1369 if (flags & MachO::SG_FVMLIB) {
1370 outs() << " FVMLIB";
1371 flags &= ~MachO::SG_FVMLIB;
1373 if (flags & MachO::SG_NORELOC) {
1374 outs() << " NORELOC";
1375 flags &= ~MachO::SG_NORELOC;
1377 if (flags & MachO::SG_PROTECTED_VERSION_1) {
1378 outs() << " PROTECTED_VERSION_1";
1379 flags &= ~MachO::SG_PROTECTED_VERSION_1;
1382 outs() << format(" 0x%08" PRIx32, flags) << " (unknown flags)\n";
1387 outs() << " flags " << format("0x%" PRIx32, flags) << "\n";
1391 static void PrintSection(const char *sectname, const char *segname,
1392 uint64_t addr, uint64_t size, uint32_t offset,
1393 uint32_t align, uint32_t reloff, uint32_t nreloc,
1394 uint32_t flags, uint32_t reserved1, uint32_t reserved2,
1395 uint32_t cmd, const char *sg_segname,
1396 uint32_t filetype, uint32_t object_size,
1398 outs() << "Section\n";
1399 outs() << " sectname " << format("%.16s\n", sectname);
1400 outs() << " segname " << format("%.16s", segname);
1401 if (filetype != MachO::MH_OBJECT && strncmp(sg_segname, segname, 16) != 0)
1402 outs() << " (does not match segment)\n";
1405 if (cmd == MachO::LC_SEGMENT_64) {
1406 outs() << " addr " << format("0x%016" PRIx64, addr) << "\n";
1407 outs() << " size " << format("0x%016" PRIx64, size);
1409 outs() << " addr " << format("0x%08" PRIx32, addr) << "\n";
1410 outs() << " size " << format("0x%08" PRIx32, size);
1412 if ((flags & MachO::S_ZEROFILL) != 0 && offset + size > object_size)
1413 outs() << " (past end of file)\n";
1416 outs() << " offset " << offset;
1417 if (offset > object_size)
1418 outs() << " (past end of file)\n";
1421 uint32_t align_shifted = 1 << align;
1422 outs() << " align 2^" << align << " (" << align_shifted << ")\n";
1423 outs() << " reloff " << reloff;
1424 if (reloff > object_size)
1425 outs() << " (past end of file)\n";
1428 outs() << " nreloc " << nreloc;
1429 if (reloff + nreloc * sizeof(struct MachO::relocation_info) > object_size)
1430 outs() << " (past end of file)\n";
1433 uint32_t section_type = flags & MachO::SECTION_TYPE;
1436 if (section_type == MachO::S_REGULAR)
1437 outs() << " S_REGULAR\n";
1438 else if (section_type == MachO::S_ZEROFILL)
1439 outs() << " S_ZEROFILL\n";
1440 else if (section_type == MachO::S_CSTRING_LITERALS)
1441 outs() << " S_CSTRING_LITERALS\n";
1442 else if (section_type == MachO::S_4BYTE_LITERALS)
1443 outs() << " S_4BYTE_LITERALS\n";
1444 else if (section_type == MachO::S_8BYTE_LITERALS)
1445 outs() << " S_8BYTE_LITERALS\n";
1446 else if (section_type == MachO::S_16BYTE_LITERALS)
1447 outs() << " S_16BYTE_LITERALS\n";
1448 else if (section_type == MachO::S_LITERAL_POINTERS)
1449 outs() << " S_LITERAL_POINTERS\n";
1450 else if (section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS)
1451 outs() << " S_NON_LAZY_SYMBOL_POINTERS\n";
1452 else if (section_type == MachO::S_LAZY_SYMBOL_POINTERS)
1453 outs() << " S_LAZY_SYMBOL_POINTERS\n";
1454 else if (section_type == MachO::S_SYMBOL_STUBS)
1455 outs() << " S_SYMBOL_STUBS\n";
1456 else if (section_type == MachO::S_MOD_INIT_FUNC_POINTERS)
1457 outs() << " S_MOD_INIT_FUNC_POINTERS\n";
1458 else if (section_type == MachO::S_MOD_TERM_FUNC_POINTERS)
1459 outs() << " S_MOD_TERM_FUNC_POINTERS\n";
1460 else if (section_type == MachO::S_COALESCED)
1461 outs() << " S_COALESCED\n";
1462 else if (section_type == MachO::S_INTERPOSING)
1463 outs() << " S_INTERPOSING\n";
1464 else if (section_type == MachO::S_DTRACE_DOF)
1465 outs() << " S_DTRACE_DOF\n";
1466 else if (section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS)
1467 outs() << " S_LAZY_DYLIB_SYMBOL_POINTERS\n";
1468 else if (section_type == MachO::S_THREAD_LOCAL_REGULAR)
1469 outs() << " S_THREAD_LOCAL_REGULAR\n";
1470 else if (section_type == MachO::S_THREAD_LOCAL_ZEROFILL)
1471 outs() << " S_THREAD_LOCAL_ZEROFILL\n";
1472 else if (section_type == MachO::S_THREAD_LOCAL_VARIABLES)
1473 outs() << " S_THREAD_LOCAL_VARIABLES\n";
1474 else if (section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS)
1475 outs() << " S_THREAD_LOCAL_VARIABLE_POINTERS\n";
1476 else if (section_type == MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS)
1477 outs() << " S_THREAD_LOCAL_INIT_FUNCTION_POINTERS\n";
1479 outs() << format("0x%08" PRIx32, section_type) << "\n";
1480 outs() << "attributes";
1481 uint32_t section_attributes = flags & MachO::SECTION_ATTRIBUTES;
1482 if (section_attributes & MachO::S_ATTR_PURE_INSTRUCTIONS)
1483 outs() << " PURE_INSTRUCTIONS";
1484 if (section_attributes & MachO::S_ATTR_NO_TOC)
1485 outs() << " NO_TOC";
1486 if (section_attributes & MachO::S_ATTR_STRIP_STATIC_SYMS)
1487 outs() << " STRIP_STATIC_SYMS";
1488 if (section_attributes & MachO::S_ATTR_NO_DEAD_STRIP)
1489 outs() << " NO_DEAD_STRIP";
1490 if (section_attributes & MachO::S_ATTR_LIVE_SUPPORT)
1491 outs() << " LIVE_SUPPORT";
1492 if (section_attributes & MachO::S_ATTR_SELF_MODIFYING_CODE)
1493 outs() << " SELF_MODIFYING_CODE";
1494 if (section_attributes & MachO::S_ATTR_DEBUG)
1496 if (section_attributes & MachO::S_ATTR_SOME_INSTRUCTIONS)
1497 outs() << " SOME_INSTRUCTIONS";
1498 if (section_attributes & MachO::S_ATTR_EXT_RELOC)
1499 outs() << " EXT_RELOC";
1500 if (section_attributes & MachO::S_ATTR_LOC_RELOC)
1501 outs() << " LOC_RELOC";
1502 if (section_attributes == 0)
1503 outs() << " (none)";
1506 outs() << " flags " << format("0x%08" PRIx32, flags) << "\n";
1507 outs() << " reserved1 " << reserved1;
1508 if (section_type == MachO::S_SYMBOL_STUBS ||
1509 section_type == MachO::S_LAZY_SYMBOL_POINTERS ||
1510 section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS ||
1511 section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS ||
1512 section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS)
1513 outs() << " (index into indirect symbol table)\n";
1516 outs() << " reserved2 " << reserved2;
1517 if (section_type == MachO::S_SYMBOL_STUBS)
1518 outs() << " (size of stubs)\n";
1523 static void PrintSymtabLoadCommand(MachO::symtab_command st, uint32_t cputype,
1524 uint32_t object_size) {
1525 outs() << " cmd LC_SYMTAB\n";
1526 outs() << " cmdsize " << st.cmdsize;
1527 if (st.cmdsize != sizeof(struct MachO::symtab_command))
1528 outs() << " Incorrect size\n";
1531 outs() << " symoff " << st.symoff;
1532 if (st.symoff > object_size)
1533 outs() << " (past end of file)\n";
1536 outs() << " nsyms " << st.nsyms;
1538 if (cputype & MachO::CPU_ARCH_ABI64) {
1539 big_size = st.nsyms;
1540 big_size *= sizeof(struct MachO::nlist_64);
1541 big_size += st.symoff;
1542 if (big_size > object_size)
1543 outs() << " (past end of file)\n";
1547 big_size = st.nsyms;
1548 big_size *= sizeof(struct MachO::nlist);
1549 big_size += st.symoff;
1550 if (big_size > object_size)
1551 outs() << " (past end of file)\n";
1555 outs() << " stroff " << st.stroff;
1556 if (st.stroff > object_size)
1557 outs() << " (past end of file)\n";
1560 outs() << " strsize " << st.strsize;
1561 big_size = st.stroff;
1562 big_size += st.strsize;
1563 if (big_size > object_size)
1564 outs() << " (past end of file)\n";
1569 static void PrintDysymtabLoadCommand(MachO::dysymtab_command dyst,
1570 uint32_t nsyms, uint32_t object_size,
1572 outs() << " cmd LC_DYSYMTAB\n";
1573 outs() << " cmdsize " << dyst.cmdsize;
1574 if (dyst.cmdsize != sizeof(struct MachO::dysymtab_command))
1575 outs() << " Incorrect size\n";
1578 outs() << " ilocalsym " << dyst.ilocalsym;
1579 if (dyst.ilocalsym > nsyms)
1580 outs() << " (greater than the number of symbols)\n";
1583 outs() << " nlocalsym " << dyst.nlocalsym;
1585 big_size = dyst.ilocalsym;
1586 big_size += dyst.nlocalsym;
1587 if (big_size > nsyms)
1588 outs() << " (past the end of the symbol table)\n";
1591 outs() << " iextdefsym " << dyst.iextdefsym;
1592 if (dyst.iextdefsym > nsyms)
1593 outs() << " (greater than the number of symbols)\n";
1596 outs() << " nextdefsym " << dyst.nextdefsym;
1597 big_size = dyst.iextdefsym;
1598 big_size += dyst.nextdefsym;
1599 if (big_size > nsyms)
1600 outs() << " (past the end of the symbol table)\n";
1603 outs() << " iundefsym " << dyst.iundefsym;
1604 if (dyst.iundefsym > nsyms)
1605 outs() << " (greater than the number of symbols)\n";
1608 outs() << " nundefsym " << dyst.nundefsym;
1609 big_size = dyst.iundefsym;
1610 big_size += dyst.nundefsym;
1611 if (big_size > nsyms)
1612 outs() << " (past the end of the symbol table)\n";
1615 outs() << " tocoff " << dyst.tocoff;
1616 if (dyst.tocoff > object_size)
1617 outs() << " (past end of file)\n";
1620 outs() << " ntoc " << dyst.ntoc;
1621 big_size = dyst.ntoc;
1622 big_size *= sizeof(struct MachO::dylib_table_of_contents);
1623 big_size += dyst.tocoff;
1624 if (big_size > object_size)
1625 outs() << " (past end of file)\n";
1628 outs() << " modtaboff " << dyst.modtaboff;
1629 if (dyst.modtaboff > object_size)
1630 outs() << " (past end of file)\n";
1633 outs() << " nmodtab " << dyst.nmodtab;
1635 if (cputype & MachO::CPU_ARCH_ABI64) {
1636 modtabend = dyst.nmodtab;
1637 modtabend *= sizeof(struct MachO::dylib_module_64);
1638 modtabend += dyst.modtaboff;
1640 modtabend = dyst.nmodtab;
1641 modtabend *= sizeof(struct MachO::dylib_module);
1642 modtabend += dyst.modtaboff;
1644 if (modtabend > object_size)
1645 outs() << " (past end of file)\n";
1648 outs() << " extrefsymoff " << dyst.extrefsymoff;
1649 if (dyst.extrefsymoff > object_size)
1650 outs() << " (past end of file)\n";
1653 outs() << " nextrefsyms " << dyst.nextrefsyms;
1654 big_size = dyst.nextrefsyms;
1655 big_size *= sizeof(struct MachO::dylib_reference);
1656 big_size += dyst.extrefsymoff;
1657 if (big_size > object_size)
1658 outs() << " (past end of file)\n";
1661 outs() << " indirectsymoff " << dyst.indirectsymoff;
1662 if (dyst.indirectsymoff > object_size)
1663 outs() << " (past end of file)\n";
1666 outs() << " nindirectsyms " << dyst.nindirectsyms;
1667 big_size = dyst.nindirectsyms;
1668 big_size *= sizeof(uint32_t);
1669 big_size += dyst.indirectsymoff;
1670 if (big_size > object_size)
1671 outs() << " (past end of file)\n";
1674 outs() << " extreloff " << dyst.extreloff;
1675 if (dyst.extreloff > object_size)
1676 outs() << " (past end of file)\n";
1679 outs() << " nextrel " << dyst.nextrel;
1680 big_size = dyst.nextrel;
1681 big_size *= sizeof(struct MachO::relocation_info);
1682 big_size += dyst.extreloff;
1683 if (big_size > object_size)
1684 outs() << " (past end of file)\n";
1687 outs() << " locreloff " << dyst.locreloff;
1688 if (dyst.locreloff > object_size)
1689 outs() << " (past end of file)\n";
1692 outs() << " nlocrel " << dyst.nlocrel;
1693 big_size = dyst.nlocrel;
1694 big_size *= sizeof(struct MachO::relocation_info);
1695 big_size += dyst.locreloff;
1696 if (big_size > object_size)
1697 outs() << " (past end of file)\n";
1702 static void PrintDyldInfoLoadCommand(MachO::dyld_info_command dc,
1703 uint32_t object_size) {
1704 if (dc.cmd == MachO::LC_DYLD_INFO)
1705 outs() << " cmd LC_DYLD_INFO\n";
1707 outs() << " cmd LC_DYLD_INFO_ONLY\n";
1708 outs() << " cmdsize " << dc.cmdsize;
1709 if (dc.cmdsize != sizeof(struct MachO::dyld_info_command))
1710 outs() << " Incorrect size\n";
1713 outs() << " rebase_off " << dc.rebase_off;
1714 if (dc.rebase_off > object_size)
1715 outs() << " (past end of file)\n";
1718 outs() << " rebase_size " << dc.rebase_size;
1720 big_size = dc.rebase_off;
1721 big_size += dc.rebase_size;
1722 if (big_size > object_size)
1723 outs() << " (past end of file)\n";
1726 outs() << " bind_off " << dc.bind_off;
1727 if (dc.bind_off > object_size)
1728 outs() << " (past end of file)\n";
1731 outs() << " bind_size " << dc.bind_size;
1732 big_size = dc.bind_off;
1733 big_size += dc.bind_size;
1734 if (big_size > object_size)
1735 outs() << " (past end of file)\n";
1738 outs() << " weak_bind_off " << dc.weak_bind_off;
1739 if (dc.weak_bind_off > object_size)
1740 outs() << " (past end of file)\n";
1743 outs() << " weak_bind_size " << dc.weak_bind_size;
1744 big_size = dc.weak_bind_off;
1745 big_size += dc.weak_bind_size;
1746 if (big_size > object_size)
1747 outs() << " (past end of file)\n";
1750 outs() << " lazy_bind_off " << dc.lazy_bind_off;
1751 if (dc.lazy_bind_off > object_size)
1752 outs() << " (past end of file)\n";
1755 outs() << " lazy_bind_size " << dc.lazy_bind_size;
1756 big_size = dc.lazy_bind_off;
1757 big_size += dc.lazy_bind_size;
1758 if (big_size > object_size)
1759 outs() << " (past end of file)\n";
1762 outs() << " export_off " << dc.export_off;
1763 if (dc.export_off > object_size)
1764 outs() << " (past end of file)\n";
1767 outs() << " export_size " << dc.export_size;
1768 big_size = dc.export_off;
1769 big_size += dc.export_size;
1770 if (big_size > object_size)
1771 outs() << " (past end of file)\n";
1776 static void PrintDyldLoadCommand(MachO::dylinker_command dyld,
1778 if (dyld.cmd == MachO::LC_ID_DYLINKER)
1779 outs() << " cmd LC_ID_DYLINKER\n";
1780 else if (dyld.cmd == MachO::LC_LOAD_DYLINKER)
1781 outs() << " cmd LC_LOAD_DYLINKER\n";
1782 else if (dyld.cmd == MachO::LC_DYLD_ENVIRONMENT)
1783 outs() << " cmd LC_DYLD_ENVIRONMENT\n";
1785 outs() << " cmd ?(" << dyld.cmd << ")\n";
1786 outs() << " cmdsize " << dyld.cmdsize;
1787 if (dyld.cmdsize < sizeof(struct MachO::dylinker_command))
1788 outs() << " Incorrect size\n";
1791 if (dyld.name >= dyld.cmdsize)
1792 outs() << " name ?(bad offset " << dyld.name << ")\n";
1794 const char *P = (const char *)(Ptr)+dyld.name;
1795 outs() << " name " << P << " (offset " << dyld.name << ")\n";
1799 static void PrintUuidLoadCommand(MachO::uuid_command uuid) {
1800 outs() << " cmd LC_UUID\n";
1801 outs() << " cmdsize " << uuid.cmdsize;
1802 if (uuid.cmdsize != sizeof(struct MachO::uuid_command))
1803 outs() << " Incorrect size\n";
1807 outs() << format("%02" PRIX32, uuid.uuid[0]);
1808 outs() << format("%02" PRIX32, uuid.uuid[1]);
1809 outs() << format("%02" PRIX32, uuid.uuid[2]);
1810 outs() << format("%02" PRIX32, uuid.uuid[3]);
1812 outs() << format("%02" PRIX32, uuid.uuid[4]);
1813 outs() << format("%02" PRIX32, uuid.uuid[5]);
1815 outs() << format("%02" PRIX32, uuid.uuid[6]);
1816 outs() << format("%02" PRIX32, uuid.uuid[7]);
1818 outs() << format("%02" PRIX32, uuid.uuid[8]);
1819 outs() << format("%02" PRIX32, uuid.uuid[9]);
1821 outs() << format("%02" PRIX32, uuid.uuid[10]);
1822 outs() << format("%02" PRIX32, uuid.uuid[11]);
1823 outs() << format("%02" PRIX32, uuid.uuid[12]);
1824 outs() << format("%02" PRIX32, uuid.uuid[13]);
1825 outs() << format("%02" PRIX32, uuid.uuid[14]);
1826 outs() << format("%02" PRIX32, uuid.uuid[15]);
1830 static void PrintVersionMinLoadCommand(MachO::version_min_command vd) {
1831 if (vd.cmd == MachO::LC_VERSION_MIN_MACOSX)
1832 outs() << " cmd LC_VERSION_MIN_MACOSX\n";
1833 else if (vd.cmd == MachO::LC_VERSION_MIN_IPHONEOS)
1834 outs() << " cmd LC_VERSION_MIN_IPHONEOS\n";
1836 outs() << " cmd " << vd.cmd << " (?)\n";
1837 outs() << " cmdsize " << vd.cmdsize;
1838 if (vd.cmdsize != sizeof(struct MachO::version_min_command))
1839 outs() << " Incorrect size\n";
1842 outs() << " version " << ((vd.version >> 16) & 0xffff) << "."
1843 << ((vd.version >> 8) & 0xff);
1844 if ((vd.version & 0xff) != 0)
1845 outs() << "." << (vd.version & 0xff);
1848 outs() << " sdk n/a\n";
1850 outs() << " sdk " << ((vd.sdk >> 16) & 0xffff) << "."
1851 << ((vd.sdk >> 8) & 0xff);
1853 if ((vd.sdk & 0xff) != 0)
1854 outs() << "." << (vd.sdk & 0xff);
1858 static void PrintSourceVersionCommand(MachO::source_version_command sd) {
1859 outs() << " cmd LC_SOURCE_VERSION\n";
1860 outs() << " cmdsize " << sd.cmdsize;
1861 if (sd.cmdsize != sizeof(struct MachO::source_version_command))
1862 outs() << " Incorrect size\n";
1865 uint64_t a = (sd.version >> 40) & 0xffffff;
1866 uint64_t b = (sd.version >> 30) & 0x3ff;
1867 uint64_t c = (sd.version >> 20) & 0x3ff;
1868 uint64_t d = (sd.version >> 10) & 0x3ff;
1869 uint64_t e = sd.version & 0x3ff;
1870 outs() << " version " << a << "." << b;
1872 outs() << "." << c << "." << d << "." << e;
1874 outs() << "." << c << "." << d;
1880 static void PrintEntryPointCommand(MachO::entry_point_command ep) {
1881 outs() << " cmd LC_MAIN\n";
1882 outs() << " cmdsize " << ep.cmdsize;
1883 if (ep.cmdsize != sizeof(struct MachO::entry_point_command))
1884 outs() << " Incorrect size\n";
1887 outs() << " entryoff " << ep.entryoff << "\n";
1888 outs() << " stacksize " << ep.stacksize << "\n";
1891 static void PrintDylibCommand(MachO::dylib_command dl, const char *Ptr) {
1892 if (dl.cmd == MachO::LC_ID_DYLIB)
1893 outs() << " cmd LC_ID_DYLIB\n";
1894 else if (dl.cmd == MachO::LC_LOAD_DYLIB)
1895 outs() << " cmd LC_LOAD_DYLIB\n";
1896 else if (dl.cmd == MachO::LC_LOAD_WEAK_DYLIB)
1897 outs() << " cmd LC_LOAD_WEAK_DYLIB\n";
1898 else if (dl.cmd == MachO::LC_REEXPORT_DYLIB)
1899 outs() << " cmd LC_REEXPORT_DYLIB\n";
1900 else if (dl.cmd == MachO::LC_LAZY_LOAD_DYLIB)
1901 outs() << " cmd LC_LAZY_LOAD_DYLIB\n";
1902 else if (dl.cmd == MachO::LC_LOAD_UPWARD_DYLIB)
1903 outs() << " cmd LC_LOAD_UPWARD_DYLIB\n";
1905 outs() << " cmd " << dl.cmd << " (unknown)\n";
1906 outs() << " cmdsize " << dl.cmdsize;
1907 if (dl.cmdsize < sizeof(struct MachO::dylib_command))
1908 outs() << " Incorrect size\n";
1911 if (dl.dylib.name < dl.cmdsize) {
1912 const char *P = (const char *)(Ptr)+dl.dylib.name;
1913 outs() << " name " << P << " (offset " << dl.dylib.name << ")\n";
1915 outs() << " name ?(bad offset " << dl.dylib.name << ")\n";
1917 outs() << " time stamp " << dl.dylib.timestamp << " ";
1918 time_t t = dl.dylib.timestamp;
1919 outs() << ctime(&t);
1920 outs() << " current version ";
1921 if (dl.dylib.current_version == 0xffffffff)
1924 outs() << ((dl.dylib.current_version >> 16) & 0xffff) << "."
1925 << ((dl.dylib.current_version >> 8) & 0xff) << "."
1926 << (dl.dylib.current_version & 0xff) << "\n";
1927 outs() << "compatibility version ";
1928 if (dl.dylib.compatibility_version == 0xffffffff)
1931 outs() << ((dl.dylib.compatibility_version >> 16) & 0xffff) << "."
1932 << ((dl.dylib.compatibility_version >> 8) & 0xff) << "."
1933 << (dl.dylib.compatibility_version & 0xff) << "\n";
1936 static void PrintLinkEditDataCommand(MachO::linkedit_data_command ld,
1937 uint32_t object_size) {
1938 if (ld.cmd == MachO::LC_CODE_SIGNATURE)
1939 outs() << " cmd LC_FUNCTION_STARTS\n";
1940 else if (ld.cmd == MachO::LC_SEGMENT_SPLIT_INFO)
1941 outs() << " cmd LC_SEGMENT_SPLIT_INFO\n";
1942 else if (ld.cmd == MachO::LC_FUNCTION_STARTS)
1943 outs() << " cmd LC_FUNCTION_STARTS\n";
1944 else if (ld.cmd == MachO::LC_DATA_IN_CODE)
1945 outs() << " cmd LC_DATA_IN_CODE\n";
1946 else if (ld.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS)
1947 outs() << " cmd LC_DYLIB_CODE_SIGN_DRS\n";
1948 else if (ld.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT)
1949 outs() << " cmd LC_LINKER_OPTIMIZATION_HINT\n";
1951 outs() << " cmd " << ld.cmd << " (?)\n";
1952 outs() << " cmdsize " << ld.cmdsize;
1953 if (ld.cmdsize != sizeof(struct MachO::linkedit_data_command))
1954 outs() << " Incorrect size\n";
1957 outs() << " dataoff " << ld.dataoff;
1958 if (ld.dataoff > object_size)
1959 outs() << " (past end of file)\n";
1962 outs() << " datasize " << ld.datasize;
1963 uint64_t big_size = ld.dataoff;
1964 big_size += ld.datasize;
1965 if (big_size > object_size)
1966 outs() << " (past end of file)\n";
1971 static void PrintLoadCommands(const MachOObjectFile *Obj, uint32_t ncmds,
1972 uint32_t filetype, uint32_t cputype,
1974 StringRef Buf = Obj->getData();
1975 MachOObjectFile::LoadCommandInfo Command = Obj->getFirstLoadCommandInfo();
1976 for (unsigned i = 0;; ++i) {
1977 outs() << "Load command " << i << "\n";
1978 if (Command.C.cmd == MachO::LC_SEGMENT) {
1979 MachO::segment_command SLC = Obj->getSegmentLoadCommand(Command);
1980 const char *sg_segname = SLC.segname;
1981 PrintSegmentCommand(SLC.cmd, SLC.cmdsize, SLC.segname, SLC.vmaddr,
1982 SLC.vmsize, SLC.fileoff, SLC.filesize, SLC.maxprot,
1983 SLC.initprot, SLC.nsects, SLC.flags, Buf.size(),
1985 for (unsigned j = 0; j < SLC.nsects; j++) {
1986 MachO::section_64 S = Obj->getSection64(Command, j);
1987 PrintSection(S.sectname, S.segname, S.addr, S.size, S.offset, S.align,
1988 S.reloff, S.nreloc, S.flags, S.reserved1, S.reserved2,
1989 SLC.cmd, sg_segname, filetype, Buf.size(), verbose);
1991 } else if (Command.C.cmd == MachO::LC_SEGMENT_64) {
1992 MachO::segment_command_64 SLC_64 = Obj->getSegment64LoadCommand(Command);
1993 const char *sg_segname = SLC_64.segname;
1994 PrintSegmentCommand(SLC_64.cmd, SLC_64.cmdsize, SLC_64.segname,
1995 SLC_64.vmaddr, SLC_64.vmsize, SLC_64.fileoff,
1996 SLC_64.filesize, SLC_64.maxprot, SLC_64.initprot,
1997 SLC_64.nsects, SLC_64.flags, Buf.size(), verbose);
1998 for (unsigned j = 0; j < SLC_64.nsects; j++) {
1999 MachO::section_64 S_64 = Obj->getSection64(Command, j);
2000 PrintSection(S_64.sectname, S_64.segname, S_64.addr, S_64.size,
2001 S_64.offset, S_64.align, S_64.reloff, S_64.nreloc,
2002 S_64.flags, S_64.reserved1, S_64.reserved2, SLC_64.cmd,
2003 sg_segname, filetype, Buf.size(), verbose);
2005 } else if (Command.C.cmd == MachO::LC_SYMTAB) {
2006 MachO::symtab_command Symtab = Obj->getSymtabLoadCommand();
2007 PrintSymtabLoadCommand(Symtab, cputype, Buf.size());
2008 } else if (Command.C.cmd == MachO::LC_DYSYMTAB) {
2009 MachO::dysymtab_command Dysymtab = Obj->getDysymtabLoadCommand();
2010 MachO::symtab_command Symtab = Obj->getSymtabLoadCommand();
2011 PrintDysymtabLoadCommand(Dysymtab, Symtab.nsyms, Buf.size(), cputype);
2012 } else if (Command.C.cmd == MachO::LC_DYLD_INFO ||
2013 Command.C.cmd == MachO::LC_DYLD_INFO_ONLY) {
2014 MachO::dyld_info_command DyldInfo = Obj->getDyldInfoLoadCommand(Command);
2015 PrintDyldInfoLoadCommand(DyldInfo, Buf.size());
2016 } else if (Command.C.cmd == MachO::LC_LOAD_DYLINKER ||
2017 Command.C.cmd == MachO::LC_ID_DYLINKER ||
2018 Command.C.cmd == MachO::LC_DYLD_ENVIRONMENT) {
2019 MachO::dylinker_command Dyld = Obj->getDylinkerCommand(Command);
2020 PrintDyldLoadCommand(Dyld, Command.Ptr);
2021 } else if (Command.C.cmd == MachO::LC_UUID) {
2022 MachO::uuid_command Uuid = Obj->getUuidCommand(Command);
2023 PrintUuidLoadCommand(Uuid);
2024 } else if (Command.C.cmd == MachO::LC_VERSION_MIN_MACOSX) {
2025 MachO::version_min_command Vd = Obj->getVersionMinLoadCommand(Command);
2026 PrintVersionMinLoadCommand(Vd);
2027 } else if (Command.C.cmd == MachO::LC_SOURCE_VERSION) {
2028 MachO::source_version_command Sd = Obj->getSourceVersionCommand(Command);
2029 PrintSourceVersionCommand(Sd);
2030 } else if (Command.C.cmd == MachO::LC_MAIN) {
2031 MachO::entry_point_command Ep = Obj->getEntryPointCommand(Command);
2032 PrintEntryPointCommand(Ep);
2033 } else if (Command.C.cmd == MachO::LC_LOAD_DYLIB) {
2034 MachO::dylib_command Dl = Obj->getDylibIDLoadCommand(Command);
2035 PrintDylibCommand(Dl, Command.Ptr);
2036 } else if (Command.C.cmd == MachO::LC_CODE_SIGNATURE ||
2037 Command.C.cmd == MachO::LC_SEGMENT_SPLIT_INFO ||
2038 Command.C.cmd == MachO::LC_FUNCTION_STARTS ||
2039 Command.C.cmd == MachO::LC_DATA_IN_CODE ||
2040 Command.C.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS ||
2041 Command.C.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT) {
2042 MachO::linkedit_data_command Ld =
2043 Obj->getLinkeditDataLoadCommand(Command);
2044 PrintLinkEditDataCommand(Ld, Buf.size());
2046 outs() << " cmd ?(" << format("0x%08" PRIx32, Command.C.cmd)
2048 outs() << " cmdsize " << Command.C.cmdsize << "\n";
2049 // TODO: get and print the raw bytes of the load command.
2051 // TODO: print all the other kinds of load commands.
2055 Command = Obj->getNextLoadCommandInfo(Command);
2059 static void getAndPrintMachHeader(const MachOObjectFile *Obj, uint32_t &ncmds,
2060 uint32_t &filetype, uint32_t &cputype,
2062 if (Obj->is64Bit()) {
2063 MachO::mach_header_64 H_64;
2064 H_64 = Obj->getHeader64();
2065 PrintMachHeader(H_64.magic, H_64.cputype, H_64.cpusubtype, H_64.filetype,
2066 H_64.ncmds, H_64.sizeofcmds, H_64.flags, verbose);
2068 filetype = H_64.filetype;
2069 cputype = H_64.cputype;
2071 MachO::mach_header H;
2072 H = Obj->getHeader();
2073 PrintMachHeader(H.magic, H.cputype, H.cpusubtype, H.filetype, H.ncmds,
2074 H.sizeofcmds, H.flags, verbose);
2076 filetype = H.filetype;
2077 cputype = H.cputype;
2081 void llvm::printMachOFileHeader(const object::ObjectFile *Obj) {
2082 const MachOObjectFile *file = dyn_cast<const MachOObjectFile>(Obj);
2084 uint32_t filetype = 0;
2085 uint32_t cputype = 0;
2086 getAndPrintMachHeader(file, ncmds, filetype, cputype, true);
2087 PrintLoadCommands(file, ncmds, filetype, cputype, true);
2090 //===----------------------------------------------------------------------===//
2091 // export trie dumping
2092 //===----------------------------------------------------------------------===//
2094 void llvm::printMachOExportsTrie(const object::MachOObjectFile *Obj) {
2095 for (const llvm::object::ExportEntry &Entry : Obj->exports()) {
2096 uint64_t Flags = Entry.flags();
2097 bool ReExport = (Flags & MachO::EXPORT_SYMBOL_FLAGS_REEXPORT);
2098 bool WeakDef = (Flags & MachO::EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION);
2099 bool ThreadLocal = ((Flags & MachO::EXPORT_SYMBOL_FLAGS_KIND_MASK) ==
2100 MachO::EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL);
2101 bool Abs = ((Flags & MachO::EXPORT_SYMBOL_FLAGS_KIND_MASK) ==
2102 MachO::EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE);
2103 bool Resolver = (Flags & MachO::EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER);
2105 outs() << "[re-export] ";
2108 << format("0x%08llX ", Entry.address()); // FIXME:add in base address
2109 outs() << Entry.name();
2110 if (WeakDef || ThreadLocal || Resolver || Abs) {
2111 bool NeedsComma = false;
2114 outs() << "weak_def";
2120 outs() << "per-thread";
2126 outs() << "absolute";
2132 outs() << format("resolver=0x%08llX", Entry.other());
2138 StringRef DylibName = "unknown";
2139 int Ordinal = Entry.other() - 1;
2140 Obj->getLibraryShortNameByIndex(Ordinal, DylibName);
2141 if (Entry.otherName().empty())
2142 outs() << " (from " << DylibName << ")";
2144 outs() << " (" << Entry.otherName() << " from " << DylibName << ")";
2151 //===----------------------------------------------------------------------===//
2152 // rebase table dumping
2153 //===----------------------------------------------------------------------===//
2158 SegInfo(const object::MachOObjectFile *Obj);
2160 StringRef segmentName(uint32_t SegIndex);
2161 StringRef sectionName(uint32_t SegIndex, uint64_t SegOffset);
2162 uint64_t address(uint32_t SegIndex, uint64_t SegOffset);
2165 struct SectionInfo {
2168 StringRef SectionName;
2169 StringRef SegmentName;
2170 uint64_t OffsetInSegment;
2171 uint64_t SegmentStartAddress;
2172 uint32_t SegmentIndex;
2174 const SectionInfo &findSection(uint32_t SegIndex, uint64_t SegOffset);
2175 SmallVector<SectionInfo, 32> Sections;
2179 SegInfo::SegInfo(const object::MachOObjectFile *Obj) {
2180 // Build table of sections so segIndex/offset pairs can be translated.
2181 uint32_t CurSegIndex = 0;
2182 StringRef CurSegName;
2183 uint64_t CurSegAddress;
2184 for (const SectionRef &Section : Obj->sections()) {
2186 if (error(Section.getName(Info.SectionName)))
2188 if (error(Section.getAddress(Info.Address)))
2190 if (error(Section.getSize(Info.Size)))
2193 Obj->getSectionFinalSegmentName(Section.getRawDataRefImpl());
2194 if (!Info.SegmentName.equals(CurSegName)) {
2196 CurSegName = Info.SegmentName;
2197 CurSegAddress = Info.Address;
2199 Info.SegmentIndex = CurSegIndex - 1;
2200 Info.OffsetInSegment = Info.Address - CurSegAddress;
2201 Info.SegmentStartAddress = CurSegAddress;
2202 Sections.push_back(Info);
2206 StringRef SegInfo::segmentName(uint32_t SegIndex) {
2207 for (const SectionInfo &SI : Sections) {
2208 if (SI.SegmentIndex == SegIndex)
2209 return SI.SegmentName;
2211 llvm_unreachable("invalid segIndex");
2214 const SegInfo::SectionInfo &SegInfo::findSection(uint32_t SegIndex,
2215 uint64_t OffsetInSeg) {
2216 for (const SectionInfo &SI : Sections) {
2217 if (SI.SegmentIndex != SegIndex)
2219 if (SI.OffsetInSegment > OffsetInSeg)
2221 if (OffsetInSeg >= (SI.OffsetInSegment + SI.Size))
2225 llvm_unreachable("segIndex and offset not in any section");
2228 StringRef SegInfo::sectionName(uint32_t SegIndex, uint64_t OffsetInSeg) {
2229 return findSection(SegIndex, OffsetInSeg).SectionName;
2232 uint64_t SegInfo::address(uint32_t SegIndex, uint64_t OffsetInSeg) {
2233 const SectionInfo &SI = findSection(SegIndex, OffsetInSeg);
2234 return SI.SegmentStartAddress + OffsetInSeg;
2237 void llvm::printMachORebaseTable(const object::MachOObjectFile *Obj) {
2238 // Build table of sections so names can used in final output.
2239 SegInfo sectionTable(Obj);
2241 outs() << "segment section address type\n";
2242 for (const llvm::object::MachORebaseEntry &Entry : Obj->rebaseTable()) {
2243 uint32_t SegIndex = Entry.segmentIndex();
2244 uint64_t OffsetInSeg = Entry.segmentOffset();
2245 StringRef SegmentName = sectionTable.segmentName(SegIndex);
2246 StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg);
2247 uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg);
2249 // Table lines look like: __DATA __nl_symbol_ptr 0x0000F00C pointer
2250 outs() << format("%-8s %-18s 0x%08X %s\n", SegmentName.str().c_str(),
2251 SectionName.str().c_str(), Address,
2252 Entry.typeName().str().c_str());