tools/llvm-objdump/MachODump.cpp

   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 "MCFunction.h"
  16 #include "llvm/ADT/OwningPtr.h"
  17 #include "llvm/ADT/STLExtras.h"
  18 #include "llvm/ADT/Triple.h"
  19 #include "llvm/DebugInfo/DIContext.h"
  20 #include "llvm/MC/MCAsmInfo.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/CommandLine.h"
  31 #include "llvm/Support/Debug.h"
  32 #include "llvm/Support/Format.h"
  33 #include "llvm/Support/GraphWriter.h"
  34 #include "llvm/Support/MachO.h"
  35 #include "llvm/Support/MemoryBuffer.h"
  36 #include "llvm/Support/TargetRegistry.h"
  37 #include "llvm/Support/TargetSelect.h"
  38 #include "llvm/Support/raw_ostream.h"
  39 #include "llvm/Support/system_error.h"
  40 #include <algorithm>
  41 #include <cstring>
  42 using namespace llvm;
  43 using namespace object;
  44
  45 static cl::opt<bool>
  46   CFG("cfg", cl::desc("Create a CFG for every symbol in the object file and"
  47                       " write it to a graphviz file (MachO-only)"));
  48
  49 static cl::opt<bool>
  50   UseDbg("g", cl::desc("Print line information from debug info if available"));
  51
  52 static cl::opt<std::string>
  53   DSYMFile("dsym", cl::desc("Use .dSYM file for debug info"));
  54
  55 static const Target *GetTarget(const MachOObjectFileBase *MachOObj) {
  56   // Figure out the target triple.
  57   if (TripleName.empty()) {
  58     llvm::Triple TT("unknown-unknown-unknown");
  59     switch (MachOObj->getHeader()->CPUType) {
  60     case llvm::MachO::CPUTypeI386:
  61       TT.setArch(Triple::ArchType(Triple::x86));
  62       break;
  63     case llvm::MachO::CPUTypeX86_64:
  64       TT.setArch(Triple::ArchType(Triple::x86_64));
  65       break;
  66     case llvm::MachO::CPUTypeARM:
  67       TT.setArch(Triple::ArchType(Triple::arm));
  68       break;
  69     case llvm::MachO::CPUTypePowerPC:
  70       TT.setArch(Triple::ArchType(Triple::ppc));
  71       break;
  72     case llvm::MachO::CPUTypePowerPC64:
  73       TT.setArch(Triple::ArchType(Triple::ppc64));
  74       break;
  75     }
  76     TripleName = TT.str();
  77   }
  78
  79   // Get the target specific parser.
  80   std::string Error;
  81   const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
  82   if (TheTarget)
  83     return TheTarget;
  84
  85   errs() << "llvm-objdump: error: unable to get target for '" << TripleName
  86          << "', see --version and --triple.\n";
  87   return 0;
  88 }
  89
  90 struct SymbolSorter {
  91   bool operator()(const SymbolRef &A, const SymbolRef &B) {
  92     SymbolRef::Type AType, BType;
  93     A.getType(AType);
  94     B.getType(BType);
  95
  96     uint64_t AAddr, BAddr;
  97     if (AType != SymbolRef::ST_Function)
  98       AAddr = 0;
  99     else
 100       A.getAddress(AAddr);
 101     if (BType != SymbolRef::ST_Function)
 102       BAddr = 0;
 103     else
 104       B.getAddress(BAddr);
 105     return AAddr < BAddr;
 106   }
 107 };
 108
 109 // Print additional information about an address, if available.
 110 static void DumpAddress(uint64_t Address, ArrayRef<SectionRef> Sections,
 111                         const MachOObjectFileBase *MachOObj, raw_ostream &OS) {
 112   for (unsigned i = 0; i != Sections.size(); ++i) {
 113     uint64_t SectAddr = 0, SectSize = 0;
 114     Sections[i].getAddress(SectAddr);
 115     Sections[i].getSize(SectSize);
 116     uint64_t addr = SectAddr;
 117     if (SectAddr <= Address &&
 118         SectAddr + SectSize > Address) {
 119       StringRef bytes, name;
 120       Sections[i].getContents(bytes);
 121       Sections[i].getName(name);
 122       // Print constant strings.
 123       if (!name.compare("__cstring"))
 124         OS << '"' << bytes.substr(addr, bytes.find('\0', addr)) << '"';
 125       // Print constant CFStrings.
 126       if (!name.compare("__cfstring"))
 127         OS << "@\"" << bytes.substr(addr, bytes.find('\0', addr)) << '"';
 128     }
 129   }
 130 }
 131
 132 typedef std::map<uint64_t, MCFunction*> FunctionMapTy;
 133 typedef SmallVector<MCFunction, 16> FunctionListTy;
 134 static void createMCFunctionAndSaveCalls(StringRef Name,
 135                                          const MCDisassembler *DisAsm,
 136                                          MemoryObject &Object, uint64_t Start,
 137                                          uint64_t End,
 138                                          MCInstrAnalysis *InstrAnalysis,
 139                                          uint64_t Address,
 140                                          raw_ostream &DebugOut,
 141                                          FunctionMapTy &FunctionMap,
 142                                          FunctionListTy &Functions) {
 143   SmallVector<uint64_t, 16> Calls;
 144   MCFunction f =
 145     MCFunction::createFunctionFromMC(Name, DisAsm, Object, Start, End,
 146                                      InstrAnalysis, DebugOut, Calls);
 147   Functions.push_back(f);
 148   FunctionMap[Address] = &Functions.back();
 149
 150   // Add the gathered callees to the map.
 151   for (unsigned i = 0, e = Calls.size(); i != e; ++i)
 152     FunctionMap.insert(std::make_pair(Calls[i], (MCFunction*)0));
 153 }
 154
 155 // Write a graphviz file for the CFG inside an MCFunction.
 156 static void emitDOTFile(const char *FileName, const MCFunction &f,
 157                         MCInstPrinter *IP) {
 158   // Start a new dot file.
 159   std::string Error;
 160   raw_fd_ostream Out(FileName, Error);
 161   if (!Error.empty()) {
 162     errs() << "llvm-objdump: warning: " << Error << '\n';
 163     return;
 164   }
 165
 166   Out << "digraph " << f.getName() << " {\n";
 167   Out << "graph [ rankdir = \"LR\" ];\n";
 168   for (MCFunction::iterator i = f.begin(), e = f.end(); i != e; ++i) {
 169     bool hasPreds = false;
 170     // Only print blocks that have predecessors.
 171     // FIXME: Slow.
 172     for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
 173         ++pi)
 174       if (pi->second.contains(i->first)) {
 175         hasPreds = true;
 176         break;
 177       }
 178
 179     if (!hasPreds && i != f.begin())
 180       continue;
 181
 182     Out << '"' << i->first << "\" [ label=\"<a>";
 183     // Print instructions.
 184     for (unsigned ii = 0, ie = i->second.getInsts().size(); ii != ie;
 185         ++ii) {
 186       // Escape special chars and print the instruction in mnemonic form.
 187       std::string Str;
 188       raw_string_ostream OS(Str);
 189       IP->printInst(&i->second.getInsts()[ii].Inst, OS, "");
 190       Out << DOT::EscapeString(OS.str()) << '|';
 191     }
 192     Out << "<o>\" shape=\"record\" ];\n";
 193
 194     // Add edges.
 195     for (MCBasicBlock::succ_iterator si = i->second.succ_begin(),
 196         se = i->second.succ_end(); si != se; ++si)
 197       Out << i->first << ":o -> " << *si <<":a\n";
 198   }
 199   Out << "}\n";
 200 }
 201
 202 static void getSectionsAndSymbols(const MachOObjectFileBase::Header *Header,
 203                                   MachOObjectFileBase *MachOObj,
 204                                   std::vector<SectionRef> &Sections,
 205                                   std::vector<SymbolRef> &Symbols,
 206                                   SmallVectorImpl<uint64_t> &FoundFns) {
 207   error_code ec;
 208   for (symbol_iterator SI = MachOObj->begin_symbols(),
 209        SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec))
 210     Symbols.push_back(*SI);
 211
 212   for (section_iterator SI = MachOObj->begin_sections(),
 213        SE = MachOObj->end_sections(); SI != SE; SI.increment(ec)) {
 214     SectionRef SR = *SI;
 215     StringRef SectName;
 216     SR.getName(SectName);
 217     Sections.push_back(*SI);
 218   }
 219
 220   for (unsigned i = 0; i != Header->NumLoadCommands; ++i) {
 221     const MachOObjectFileBase::LoadCommand *Command =
 222       MachOObj->getLoadCommandInfo(i);
 223     if (Command->Type == macho::LCT_FunctionStarts) {
 224       // We found a function starts segment, parse the addresses for later
 225       // consumption.
 226       const MachOObjectFileBase::LinkeditDataLoadCommand *LLC =
 227  reinterpret_cast<const MachOObjectFileBase::LinkeditDataLoadCommand*>(Command);
 228
 229       MachOObj->ReadULEB128s(LLC->DataOffset, FoundFns);
 230     }
 231   }
 232 }
 233
 234 void llvm::DisassembleInputMachO(StringRef Filename) {
 235   OwningPtr<MemoryBuffer> Buff;
 236
 237   if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
 238     errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n";
 239     return;
 240   }
 241
 242   OwningPtr<MachOObjectFileBase> MachOOF(static_cast<MachOObjectFileBase*>(
 243         ObjectFile::createMachOObjectFile(Buff.take())));
 244
 245   const Target *TheTarget = GetTarget(MachOOF.get());
 246   if (!TheTarget) {
 247     // GetTarget prints out stuff.
 248     return;
 249   }
 250   OwningPtr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo());
 251   OwningPtr<MCInstrAnalysis>
 252     InstrAnalysis(TheTarget->createMCInstrAnalysis(InstrInfo.get()));
 253
 254   // Set up disassembler.
 255   OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName));
 256   OwningPtr<const MCSubtargetInfo>
 257     STI(TheTarget->createMCSubtargetInfo(TripleName, "", ""));
 258   OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
 259   OwningPtr<const MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
 260   int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
 261   OwningPtr<MCInstPrinter>
 262     IP(TheTarget->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *InstrInfo,
 263                                       *MRI, *STI));
 264
 265   if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
 266     errs() << "error: couldn't initialize disassembler for target "
 267            << TripleName << '\n';
 268     return;
 269   }
 270
 271   outs() << '\n' << Filename << ":\n\n";
 272
 273   const MachOObjectFileBase::Header *Header = MachOOF->getHeader();
 274
 275   std::vector<SectionRef> Sections;
 276   std::vector<SymbolRef> Symbols;
 277   SmallVector<uint64_t, 8> FoundFns;
 278
 279   getSectionsAndSymbols(Header, MachOOF.get(), Sections, Symbols, FoundFns);
 280
 281   // Make a copy of the unsorted symbol list. FIXME: duplication
 282   std::vector<SymbolRef> UnsortedSymbols(Symbols);
 283   // Sort the symbols by address, just in case they didn't come in that way.
 284   std::sort(Symbols.begin(), Symbols.end(), SymbolSorter());
 285
 286 #ifndef NDEBUG
 287   raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
 288 #else
 289   raw_ostream &DebugOut = nulls();
 290 #endif
 291
 292   OwningPtr<DIContext> diContext;
 293   ObjectFile *DbgObj = MachOOF.get();
 294   // Try to find debug info and set up the DIContext for it.
 295   if (UseDbg) {
 296     // A separate DSym file path was specified, parse it as a macho file,
 297     // get the sections and supply it to the section name parsing machinery.
 298     if (!DSYMFile.empty()) {
 299       OwningPtr<MemoryBuffer> Buf;
 300       if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile.c_str(), Buf)) {
 301         errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n';
 302         return;
 303       }
 304       DbgObj = ObjectFile::createMachOObjectFile(Buf.take());
 305     }
 306
 307     // Setup the DIContext
 308     diContext.reset(DIContext::getDWARFContext(DbgObj));
 309   }
 310
 311   FunctionMapTy FunctionMap;
 312   FunctionListTy Functions;
 313
 314   for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
 315     StringRef SectName;
 316     if (Sections[SectIdx].getName(SectName) ||
 317         SectName != "__text")
 318       continue; // Skip non-text sections
 319
 320     DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl();
 321     StringRef SegmentName = MachOOF->getSectionFinalSegmentName(DR);
 322     if (SegmentName != "__TEXT")
 323       continue;
 324
 325     // Insert the functions from the function starts segment into our map.
 326     uint64_t VMAddr;
 327     Sections[SectIdx].getAddress(VMAddr);
 328     for (unsigned i = 0, e = FoundFns.size(); i != e; ++i) {
 329       StringRef SectBegin;
 330       Sections[SectIdx].getContents(SectBegin);
 331       uint64_t Offset = (uint64_t)SectBegin.data();
 332       FunctionMap.insert(std::make_pair(VMAddr + FoundFns[i]-Offset,
 333                                         (MCFunction*)0));
 334     }
 335
 336     StringRef Bytes;
 337     Sections[SectIdx].getContents(Bytes);
 338     StringRefMemoryObject memoryObject(Bytes);
 339     bool symbolTableWorked = false;
 340
 341     // Parse relocations.
 342     std::vector<std::pair<uint64_t, SymbolRef> > Relocs;
 343     error_code ec;
 344     for (relocation_iterator RI = Sections[SectIdx].begin_relocations(),
 345          RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) {
 346       uint64_t RelocOffset, SectionAddress;
 347       RI->getAddress(RelocOffset);
 348       Sections[SectIdx].getAddress(SectionAddress);
 349       RelocOffset -= SectionAddress;
 350
 351       SymbolRef RelocSym;
 352       RI->getSymbol(RelocSym);
 353
 354       Relocs.push_back(std::make_pair(RelocOffset, RelocSym));
 355     }
 356     array_pod_sort(Relocs.begin(), Relocs.end());
 357
 358     // Disassemble symbol by symbol.
 359     for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
 360       StringRef SymName;
 361       Symbols[SymIdx].getName(SymName);
 362
 363       SymbolRef::Type ST;
 364       Symbols[SymIdx].getType(ST);
 365       if (ST != SymbolRef::ST_Function)
 366         continue;
 367
 368       // Make sure the symbol is defined in this section.
 369       bool containsSym = false;
 370       Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym);
 371       if (!containsSym)
 372         continue;
 373
 374       // Start at the address of the symbol relative to the section's address.
 375       uint64_t SectionAddress = 0;
 376       uint64_t Start = 0;
 377       Sections[SectIdx].getAddress(SectionAddress);
 378       Symbols[SymIdx].getAddress(Start);
 379       Start -= SectionAddress;
 380
 381       // Stop disassembling either at the beginning of the next symbol or at
 382       // the end of the section.
 383       bool containsNextSym = false;
 384       uint64_t NextSym = 0;
 385       uint64_t NextSymIdx = SymIdx+1;
 386       while (Symbols.size() > NextSymIdx) {
 387         SymbolRef::Type NextSymType;
 388         Symbols[NextSymIdx].getType(NextSymType);
 389         if (NextSymType == SymbolRef::ST_Function) {
 390           Sections[SectIdx].containsSymbol(Symbols[NextSymIdx],
 391                                            containsNextSym);
 392           Symbols[NextSymIdx].getAddress(NextSym);
 393           NextSym -= SectionAddress;
 394           break;
 395         }
 396         ++NextSymIdx;
 397       }
 398
 399       uint64_t SectSize;
 400       Sections[SectIdx].getSize(SectSize);
 401       uint64_t End = containsNextSym ?  NextSym : SectSize;
 402       uint64_t Size;
 403
 404       symbolTableWorked = true;
 405
 406       if (!CFG) {
 407         // Normal disassembly, print addresses, bytes and mnemonic form.
 408         StringRef SymName;
 409         Symbols[SymIdx].getName(SymName);
 410
 411         outs() << SymName << ":\n";
 412         DILineInfo lastLine;
 413         for (uint64_t Index = Start; Index < End; Index += Size) {
 414           MCInst Inst;
 415
 416           if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
 417                                      DebugOut, nulls())) {
 418             uint64_t SectAddress = 0;
 419             Sections[SectIdx].getAddress(SectAddress);
 420             outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
 421
 422             DumpBytes(StringRef(Bytes.data() + Index, Size));
 423             IP->printInst(&Inst, outs(), "");
 424
 425             // Print debug info.
 426             if (diContext) {
 427               DILineInfo dli =
 428                 diContext->getLineInfoForAddress(SectAddress + Index);
 429               // Print valid line info if it changed.
 430               if (dli != lastLine && dli.getLine() != 0)
 431                 outs() << "\t## " << dli.getFileName() << ':'
 432                        << dli.getLine() << ':' << dli.getColumn();
 433               lastLine = dli;
 434             }
 435             outs() << "\n";
 436           } else {
 437             errs() << "llvm-objdump: warning: invalid instruction encoding\n";
 438             if (Size == 0)
 439               Size = 1; // skip illegible bytes
 440           }
 441         }
 442       } else {
 443         // Create CFG and use it for disassembly.
 444         StringRef SymName;
 445         Symbols[SymIdx].getName(SymName);
 446         createMCFunctionAndSaveCalls(
 447             SymName, DisAsm.get(), memoryObject, Start, End,
 448             InstrAnalysis.get(), Start, DebugOut, FunctionMap, Functions);
 449       }
 450     }
 451     if (!CFG && !symbolTableWorked) {
 452       // Reading the symbol table didn't work, disassemble the whole section.
 453       uint64_t SectAddress;
 454       Sections[SectIdx].getAddress(SectAddress);
 455       uint64_t SectSize;
 456       Sections[SectIdx].getSize(SectSize);
 457       uint64_t InstSize;
 458       for (uint64_t Index = 0; Index < SectSize; Index += InstSize) {
 459         MCInst Inst;
 460
 461         if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index,
 462                                    DebugOut, nulls())) {
 463           outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
 464           DumpBytes(StringRef(Bytes.data() + Index, InstSize));
 465           IP->printInst(&Inst, outs(), "");
 466           outs() << "\n";
 467         } else {
 468           errs() << "llvm-objdump: warning: invalid instruction encoding\n";
 469           if (InstSize == 0)
 470             InstSize = 1; // skip illegible bytes
 471         }
 472       }
 473     }
 474
 475     if (CFG) {
 476       if (!symbolTableWorked) {
 477         // Reading the symbol table didn't work, create a big __TEXT symbol.
 478         uint64_t SectSize = 0, SectAddress = 0;
 479         Sections[SectIdx].getSize(SectSize);
 480         Sections[SectIdx].getAddress(SectAddress);
 481         createMCFunctionAndSaveCalls("__TEXT", DisAsm.get(), memoryObject,
 482                                      0, SectSize,
 483                                      InstrAnalysis.get(),
 484                                      SectAddress, DebugOut,
 485                                      FunctionMap, Functions);
 486       }
 487       for (std::map<uint64_t, MCFunction*>::iterator mi = FunctionMap.begin(),
 488            me = FunctionMap.end(); mi != me; ++mi)
 489         if (mi->second == 0) {
 490           // Create functions for the remaining callees we have gathered,
 491           // but we didn't find a name for them.
 492           uint64_t SectSize = 0;
 493           Sections[SectIdx].getSize(SectSize);
 494
 495           SmallVector<uint64_t, 16> Calls;
 496           MCFunction f =
 497             MCFunction::createFunctionFromMC("unknown", DisAsm.get(),
 498                                              memoryObject, mi->first,
 499                                              SectSize,
 500                                              InstrAnalysis.get(), DebugOut,
 501                                              Calls);
 502           Functions.push_back(f);
 503           mi->second = &Functions.back();
 504           for (unsigned i = 0, e = Calls.size(); i != e; ++i) {
 505             std::pair<uint64_t, MCFunction*> p(Calls[i], (MCFunction*)0);
 506             if (FunctionMap.insert(p).second)
 507               mi = FunctionMap.begin();
 508           }
 509         }
 510
 511       DenseSet<uint64_t> PrintedBlocks;
 512       for (unsigned ffi = 0, ffe = Functions.size(); ffi != ffe; ++ffi) {
 513         MCFunction &f = Functions[ffi];
 514         for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){
 515           if (!PrintedBlocks.insert(fi->first).second)
 516             continue; // We already printed this block.
 517
 518           // We assume a block has predecessors when it's the first block after
 519           // a symbol.
 520           bool hasPreds = FunctionMap.find(fi->first) != FunctionMap.end();
 521
 522           // See if this block has predecessors.
 523           // FIXME: Slow.
 524           for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
 525               ++pi)
 526             if (pi->second.contains(fi->first)) {
 527               hasPreds = true;
 528               break;
 529             }
 530
 531           uint64_t SectSize = 0, SectAddress;
 532           Sections[SectIdx].getSize(SectSize);
 533           Sections[SectIdx].getAddress(SectAddress);
 534
 535           // No predecessors, this is a data block. Print as .byte directives.
 536           if (!hasPreds) {
 537             uint64_t End = llvm::next(fi) == fe ? SectSize :
 538                                                   llvm::next(fi)->first;
 539             outs() << "# " << End-fi->first << " bytes of data:\n";
 540             for (unsigned pos = fi->first; pos != End; ++pos) {
 541               outs() << format("%8x:\t", SectAddress + pos);
 542               DumpBytes(StringRef(Bytes.data() + pos, 1));
 543               outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]);
 544             }
 545             continue;
 546           }
 547
 548           if (fi->second.contains(fi->first)) // Print a header for simple loops
 549             outs() << "# Loop begin:\n";
 550
 551           DILineInfo lastLine;
 552           // Walk over the instructions and print them.
 553           for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie;
 554                ++ii) {
 555             const MCDecodedInst &Inst = fi->second.getInsts()[ii];
 556
 557             // If there's a symbol at this address, print its name.
 558             if (FunctionMap.find(SectAddress + Inst.Address) !=
 559                 FunctionMap.end())
 560               outs() << FunctionMap[SectAddress + Inst.Address]-> getName()
 561                      << ":\n";
 562
 563             outs() << format("%8" PRIx64 ":\t", SectAddress + Inst.Address);
 564             DumpBytes(StringRef(Bytes.data() + Inst.Address, Inst.Size));
 565
 566             if (fi->second.contains(fi->first)) // Indent simple loops.
 567               outs() << '\t';
 568
 569             IP->printInst(&Inst.Inst, outs(), "");
 570
 571             // Look for relocations inside this instructions, if there is one
 572             // print its target and additional information if available.
 573             for (unsigned j = 0; j != Relocs.size(); ++j)
 574               if (Relocs[j].first >= SectAddress + Inst.Address &&
 575                   Relocs[j].first < SectAddress + Inst.Address + Inst.Size) {
 576                 StringRef SymName;
 577                 uint64_t Addr;
 578                 Relocs[j].second.getAddress(Addr);
 579                 Relocs[j].second.getName(SymName);
 580
 581                 outs() << "\t# " << SymName << ' ';
 582                 DumpAddress(Addr, Sections, MachOOF.get(), outs());
 583               }
 584
 585             // If this instructions contains an address, see if we can evaluate
 586             // it and print additional information.
 587             uint64_t targ = InstrAnalysis->evaluateBranch(Inst.Inst,
 588                                                           Inst.Address,
 589                                                           Inst.Size);
 590             if (targ != -1ULL)
 591               DumpAddress(targ, Sections, MachOOF.get(), outs());
 592
 593             // Print debug info.
 594             if (diContext) {
 595               DILineInfo dli =
 596                 diContext->getLineInfoForAddress(SectAddress + Inst.Address);
 597               // Print valid line info if it changed.
 598               if (dli != lastLine && dli.getLine() != 0)
 599                 outs() << "\t## " << dli.getFileName() << ':'
 600                        << dli.getLine() << ':' << dli.getColumn();
 601               lastLine = dli;
 602             }
 603
 604             outs() << '\n';
 605           }
 606         }
 607
 608         emitDOTFile((f.getName().str() + ".dot").c_str(), f, IP.get());
 609       }
 610     }
 611   }
 612 }