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/Casting.h"
  31 #include "llvm/Support/CommandLine.h"
  32 #include "llvm/Support/Debug.h"
  33 #include "llvm/Support/Format.h"
  34 #include "llvm/Support/GraphWriter.h"
  35 #include "llvm/Support/MachO.h"
  36 #include "llvm/Support/MemoryBuffer.h"
  37 #include "llvm/Support/TargetRegistry.h"
  38 #include "llvm/Support/TargetSelect.h"
  39 #include "llvm/Support/raw_ostream.h"
  40 #include "llvm/Support/system_error.h"
  41 #include <algorithm>
  42 #include <cstring>
  43 using namespace llvm;
  44 using namespace object;
  45
  46 static cl::opt<bool>
  47   CFG("cfg", cl::desc("Create a CFG for every symbol in the object file and"
  48                       " write it to a graphviz file (MachO-only)"));
  49
  50 static cl::opt<bool>
  51   UseDbg("g", cl::desc("Print line information from debug info if available"));
  52
  53 static cl::opt<std::string>
  54   DSYMFile("dsym", cl::desc("Use .dSYM file for debug info"));
  55
  56 static const Target *GetTarget(const MachOObjectFileBase *MachOObj) {
  57   // Figure out the target triple.
  58   if (TripleName.empty()) {
  59     llvm::Triple TT("unknown-unknown-unknown");
  60     TT.setArch(Triple::ArchType(MachOObj->getArch()));
  61     TripleName = TT.str();
  62   }
  63
  64   // Get the target specific parser.
  65   std::string Error;
  66   const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
  67   if (TheTarget)
  68     return TheTarget;
  69
  70   errs() << "llvm-objdump: error: unable to get target for '" << TripleName
  71          << "', see --version and --triple.\n";
  72   return 0;
  73 }
  74
  75 struct SymbolSorter {
  76   bool operator()(const SymbolRef &A, const SymbolRef &B) {
  77     SymbolRef::Type AType, BType;
  78     A.getType(AType);
  79     B.getType(BType);
  80
  81     uint64_t AAddr, BAddr;
  82     if (AType != SymbolRef::ST_Function)
  83       AAddr = 0;
  84     else
  85       A.getAddress(AAddr);
  86     if (BType != SymbolRef::ST_Function)
  87       BAddr = 0;
  88     else
  89       B.getAddress(BAddr);
  90     return AAddr < BAddr;
  91   }
  92 };
  93
  94 // Print additional information about an address, if available.
  95 static void DumpAddress(uint64_t Address, ArrayRef<SectionRef> Sections,
  96                         const MachOObjectFileBase *MachOObj, raw_ostream &OS) {
  97   for (unsigned i = 0; i != Sections.size(); ++i) {
  98     uint64_t SectAddr = 0, SectSize = 0;
  99     Sections[i].getAddress(SectAddr);
 100     Sections[i].getSize(SectSize);
 101     uint64_t addr = SectAddr;
 102     if (SectAddr <= Address &&
 103         SectAddr + SectSize > Address) {
 104       StringRef bytes, name;
 105       Sections[i].getContents(bytes);
 106       Sections[i].getName(name);
 107       // Print constant strings.
 108       if (!name.compare("__cstring"))
 109         OS << '"' << bytes.substr(addr, bytes.find('\0', addr)) << '"';
 110       // Print constant CFStrings.
 111       if (!name.compare("__cfstring"))
 112         OS << "@\"" << bytes.substr(addr, bytes.find('\0', addr)) << '"';
 113     }
 114   }
 115 }
 116
 117 typedef std::map<uint64_t, MCFunction*> FunctionMapTy;
 118 typedef SmallVector<MCFunction, 16> FunctionListTy;
 119 static void createMCFunctionAndSaveCalls(StringRef Name,
 120                                          const MCDisassembler *DisAsm,
 121                                          MemoryObject &Object, uint64_t Start,
 122                                          uint64_t End,
 123                                          MCInstrAnalysis *InstrAnalysis,
 124                                          uint64_t Address,
 125                                          raw_ostream &DebugOut,
 126                                          FunctionMapTy &FunctionMap,
 127                                          FunctionListTy &Functions) {
 128   SmallVector<uint64_t, 16> Calls;
 129   MCFunction f =
 130     MCFunction::createFunctionFromMC(Name, DisAsm, Object, Start, End,
 131                                      InstrAnalysis, DebugOut, Calls);
 132   Functions.push_back(f);
 133   FunctionMap[Address] = &Functions.back();
 134
 135   // Add the gathered callees to the map.
 136   for (unsigned i = 0, e = Calls.size(); i != e; ++i)
 137     FunctionMap.insert(std::make_pair(Calls[i], (MCFunction*)0));
 138 }
 139
 140 // Write a graphviz file for the CFG inside an MCFunction.
 141 static void emitDOTFile(const char *FileName, const MCFunction &f,
 142                         MCInstPrinter *IP) {
 143   // Start a new dot file.
 144   std::string Error;
 145   raw_fd_ostream Out(FileName, Error);
 146   if (!Error.empty()) {
 147     errs() << "llvm-objdump: warning: " << Error << '\n';
 148     return;
 149   }
 150
 151   Out << "digraph " << f.getName() << " {\n";
 152   Out << "graph [ rankdir = \"LR\" ];\n";
 153   for (MCFunction::iterator i = f.begin(), e = f.end(); i != e; ++i) {
 154     bool hasPreds = false;
 155     // Only print blocks that have predecessors.
 156     // FIXME: Slow.
 157     for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
 158         ++pi)
 159       if (pi->second.contains(i->first)) {
 160         hasPreds = true;
 161         break;
 162       }
 163
 164     if (!hasPreds && i != f.begin())
 165       continue;
 166
 167     Out << '"' << i->first << "\" [ label=\"<a>";
 168     // Print instructions.
 169     for (unsigned ii = 0, ie = i->second.getInsts().size(); ii != ie;
 170         ++ii) {
 171       // Escape special chars and print the instruction in mnemonic form.
 172       std::string Str;
 173       raw_string_ostream OS(Str);
 174       IP->printInst(&i->second.getInsts()[ii].Inst, OS, "");
 175       Out << DOT::EscapeString(OS.str()) << '|';
 176     }
 177     Out << "<o>\" shape=\"record\" ];\n";
 178
 179     // Add edges.
 180     for (MCBasicBlock::succ_iterator si = i->second.succ_begin(),
 181         se = i->second.succ_end(); si != se; ++si)
 182       Out << i->first << ":o -> " << *si <<":a\n";
 183   }
 184   Out << "}\n";
 185 }
 186
 187 template<endianness E>
 188 static void
 189 getSectionsAndSymbols(const typename MachOObjectFileMiddle<E>::Header *Header,
 190                       const MachOObjectFileMiddle<E> *MachOObj,
 191                       std::vector<SectionRef> &Sections,
 192                       std::vector<SymbolRef> &Symbols,
 193                       SmallVectorImpl<uint64_t> &FoundFns) {
 194   typedef MachOObjectFileMiddle<E> ObjType;
 195   error_code ec;
 196   for (symbol_iterator SI = MachOObj->begin_symbols(),
 197        SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec))
 198     Symbols.push_back(*SI);
 199
 200   for (section_iterator SI = MachOObj->begin_sections(),
 201        SE = MachOObj->end_sections(); SI != SE; SI.increment(ec)) {
 202     SectionRef SR = *SI;
 203     StringRef SectName;
 204     SR.getName(SectName);
 205     Sections.push_back(*SI);
 206   }
 207
 208   for (unsigned i = 0; i != Header->NumLoadCommands; ++i) {
 209     const typename ObjType::LoadCommand *Command =
 210       MachOObj->getLoadCommandInfo(i);
 211     if (Command->Type == macho::LCT_FunctionStarts) {
 212       // We found a function starts segment, parse the addresses for later
 213       // consumption.
 214       const typename ObjType::LinkeditDataLoadCommand *LLC =
 215     reinterpret_cast<const typename ObjType::LinkeditDataLoadCommand*>(Command);
 216
 217       MachOObj->ReadULEB128s(LLC->DataOffset, FoundFns);
 218     }
 219   }
 220 }
 221
 222 template<endianness E>
 223 static void DisassembleInputMachO2(StringRef Filename,
 224                                    MachOObjectFileMiddle<E> *MachOOF);
 225
 226 void llvm::DisassembleInputMachO(StringRef Filename) {
 227   OwningPtr<MemoryBuffer> Buff;
 228
 229   if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
 230     errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n";
 231     return;
 232   }
 233
 234   OwningPtr<MachOObjectFileBase> MachOOF(static_cast<MachOObjectFileBase*>(
 235         ObjectFile::createMachOObjectFile(Buff.take())));
 236
 237   if (MachOObjectFileLE *O = dyn_cast<MachOObjectFileLE>(MachOOF.get())) {
 238     DisassembleInputMachO2(Filename, O);
 239     return;
 240   }
 241   MachOObjectFileBE *O = cast<MachOObjectFileBE>(MachOOF.get());
 242   DisassembleInputMachO2(Filename, O);
 243 }
 244
 245 template<endianness E>
 246 static void DisassembleInputMachO2(StringRef Filename,
 247                                    MachOObjectFileMiddle<E> *MachOOF) {
 248   const Target *TheTarget = GetTarget(MachOOF);
 249   if (!TheTarget) {
 250     // GetTarget prints out stuff.
 251     return;
 252   }
 253   OwningPtr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo());
 254   OwningPtr<MCInstrAnalysis>
 255     InstrAnalysis(TheTarget->createMCInstrAnalysis(InstrInfo.get()));
 256
 257   // Set up disassembler.
 258   OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName));
 259   OwningPtr<const MCSubtargetInfo>
 260     STI(TheTarget->createMCSubtargetInfo(TripleName, "", ""));
 261   OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
 262   OwningPtr<const MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
 263   int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
 264   OwningPtr<MCInstPrinter>
 265     IP(TheTarget->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *InstrInfo,
 266                                       *MRI, *STI));
 267
 268   if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
 269     errs() << "error: couldn't initialize disassembler for target "
 270            << TripleName << '\n';
 271     return;
 272   }
 273
 274   outs() << '\n' << Filename << ":\n\n";
 275
 276   const typename MachOObjectFileMiddle<E>::Header *Header =
 277     MachOOF->getHeader();
 278
 279   std::vector<SectionRef> Sections;
 280   std::vector<SymbolRef> Symbols;
 281   SmallVector<uint64_t, 8> FoundFns;
 282
 283   getSectionsAndSymbols(Header, MachOOF, Sections, Symbols, FoundFns);
 284
 285   // Make a copy of the unsorted symbol list. FIXME: duplication
 286   std::vector<SymbolRef> UnsortedSymbols(Symbols);
 287   // Sort the symbols by address, just in case they didn't come in that way.
 288   std::sort(Symbols.begin(), Symbols.end(), SymbolSorter());
 289
 290 #ifndef NDEBUG
 291   raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
 292 #else
 293   raw_ostream &DebugOut = nulls();
 294 #endif
 295
 296   OwningPtr<DIContext> diContext;
 297   ObjectFile *DbgObj = MachOOF;
 298   // Try to find debug info and set up the DIContext for it.
 299   if (UseDbg) {
 300     // A separate DSym file path was specified, parse it as a macho file,
 301     // get the sections and supply it to the section name parsing machinery.
 302     if (!DSYMFile.empty()) {
 303       OwningPtr<MemoryBuffer> Buf;
 304       if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile.c_str(), Buf)) {
 305         errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n';
 306         return;
 307       }
 308       DbgObj = ObjectFile::createMachOObjectFile(Buf.take());
 309     }
 310
 311     // Setup the DIContext
 312     diContext.reset(DIContext::getDWARFContext(DbgObj));
 313   }
 314
 315   FunctionMapTy FunctionMap;
 316   FunctionListTy Functions;
 317
 318   for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
 319     StringRef SectName;
 320     if (Sections[SectIdx].getName(SectName) ||
 321         SectName != "__text")
 322       continue; // Skip non-text sections
 323
 324     DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl();
 325     StringRef SegmentName = MachOOF->getSectionFinalSegmentName(DR);
 326     if (SegmentName != "__TEXT")
 327       continue;
 328
 329     // Insert the functions from the function starts segment into our map.
 330     uint64_t VMAddr;
 331     Sections[SectIdx].getAddress(VMAddr);
 332     for (unsigned i = 0, e = FoundFns.size(); i != e; ++i) {
 333       StringRef SectBegin;
 334       Sections[SectIdx].getContents(SectBegin);
 335       uint64_t Offset = (uint64_t)SectBegin.data();
 336       FunctionMap.insert(std::make_pair(VMAddr + FoundFns[i]-Offset,
 337                                         (MCFunction*)0));
 338     }
 339
 340     StringRef Bytes;
 341     Sections[SectIdx].getContents(Bytes);
 342     StringRefMemoryObject memoryObject(Bytes);
 343     bool symbolTableWorked = false;
 344
 345     // Parse relocations.
 346     std::vector<std::pair<uint64_t, SymbolRef> > Relocs;
 347     error_code ec;
 348     for (relocation_iterator RI = Sections[SectIdx].begin_relocations(),
 349          RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) {
 350       uint64_t RelocOffset, SectionAddress;
 351       RI->getAddress(RelocOffset);
 352       Sections[SectIdx].getAddress(SectionAddress);
 353       RelocOffset -= SectionAddress;
 354
 355       SymbolRef RelocSym;
 356       RI->getSymbol(RelocSym);
 357
 358       Relocs.push_back(std::make_pair(RelocOffset, RelocSym));
 359     }
 360     array_pod_sort(Relocs.begin(), Relocs.end());
 361
 362     // Disassemble symbol by symbol.
 363     for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
 364       StringRef SymName;
 365       Symbols[SymIdx].getName(SymName);
 366
 367       SymbolRef::Type ST;
 368       Symbols[SymIdx].getType(ST);
 369       if (ST != SymbolRef::ST_Function)
 370         continue;
 371
 372       // Make sure the symbol is defined in this section.
 373       bool containsSym = false;
 374       Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym);
 375       if (!containsSym)
 376         continue;
 377
 378       // Start at the address of the symbol relative to the section's address.
 379       uint64_t SectionAddress = 0;
 380       uint64_t Start = 0;
 381       Sections[SectIdx].getAddress(SectionAddress);
 382       Symbols[SymIdx].getAddress(Start);
 383       Start -= SectionAddress;
 384
 385       // Stop disassembling either at the beginning of the next symbol or at
 386       // the end of the section.
 387       bool containsNextSym = false;
 388       uint64_t NextSym = 0;
 389       uint64_t NextSymIdx = SymIdx+1;
 390       while (Symbols.size() > NextSymIdx) {
 391         SymbolRef::Type NextSymType;
 392         Symbols[NextSymIdx].getType(NextSymType);
 393         if (NextSymType == SymbolRef::ST_Function) {
 394           Sections[SectIdx].containsSymbol(Symbols[NextSymIdx],
 395                                            containsNextSym);
 396           Symbols[NextSymIdx].getAddress(NextSym);
 397           NextSym -= SectionAddress;
 398           break;
 399         }
 400         ++NextSymIdx;
 401       }
 402
 403       uint64_t SectSize;
 404       Sections[SectIdx].getSize(SectSize);
 405       uint64_t End = containsNextSym ?  NextSym : SectSize;
 406       uint64_t Size;
 407
 408       symbolTableWorked = true;
 409
 410       if (!CFG) {
 411         // Normal disassembly, print addresses, bytes and mnemonic form.
 412         StringRef SymName;
 413         Symbols[SymIdx].getName(SymName);
 414
 415         outs() << SymName << ":\n";
 416         DILineInfo lastLine;
 417         for (uint64_t Index = Start; Index < End; Index += Size) {
 418           MCInst Inst;
 419
 420           if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
 421                                      DebugOut, nulls())) {
 422             uint64_t SectAddress = 0;
 423             Sections[SectIdx].getAddress(SectAddress);
 424             outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
 425
 426             DumpBytes(StringRef(Bytes.data() + Index, Size));
 427             IP->printInst(&Inst, outs(), "");
 428
 429             // Print debug info.
 430             if (diContext) {
 431               DILineInfo dli =
 432                 diContext->getLineInfoForAddress(SectAddress + Index);
 433               // Print valid line info if it changed.
 434               if (dli != lastLine && dli.getLine() != 0)
 435                 outs() << "\t## " << dli.getFileName() << ':'
 436                        << dli.getLine() << ':' << dli.getColumn();
 437               lastLine = dli;
 438             }
 439             outs() << "\n";
 440           } else {
 441             errs() << "llvm-objdump: warning: invalid instruction encoding\n";
 442             if (Size == 0)
 443               Size = 1; // skip illegible bytes
 444           }
 445         }
 446       } else {
 447         // Create CFG and use it for disassembly.
 448         StringRef SymName;
 449         Symbols[SymIdx].getName(SymName);
 450         createMCFunctionAndSaveCalls(
 451             SymName, DisAsm.get(), memoryObject, Start, End,
 452             InstrAnalysis.get(), Start, DebugOut, FunctionMap, Functions);
 453       }
 454     }
 455     if (!CFG && !symbolTableWorked) {
 456       // Reading the symbol table didn't work, disassemble the whole section.
 457       uint64_t SectAddress;
 458       Sections[SectIdx].getAddress(SectAddress);
 459       uint64_t SectSize;
 460       Sections[SectIdx].getSize(SectSize);
 461       uint64_t InstSize;
 462       for (uint64_t Index = 0; Index < SectSize; Index += InstSize) {
 463         MCInst Inst;
 464
 465         if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index,
 466                                    DebugOut, nulls())) {
 467           outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
 468           DumpBytes(StringRef(Bytes.data() + Index, InstSize));
 469           IP->printInst(&Inst, outs(), "");
 470           outs() << "\n";
 471         } else {
 472           errs() << "llvm-objdump: warning: invalid instruction encoding\n";
 473           if (InstSize == 0)
 474             InstSize = 1; // skip illegible bytes
 475         }
 476       }
 477     }
 478
 479     if (CFG) {
 480       if (!symbolTableWorked) {
 481         // Reading the symbol table didn't work, create a big __TEXT symbol.
 482         uint64_t SectSize = 0, SectAddress = 0;
 483         Sections[SectIdx].getSize(SectSize);
 484         Sections[SectIdx].getAddress(SectAddress);
 485         createMCFunctionAndSaveCalls("__TEXT", DisAsm.get(), memoryObject,
 486                                      0, SectSize,
 487                                      InstrAnalysis.get(),
 488                                      SectAddress, DebugOut,
 489                                      FunctionMap, Functions);
 490       }
 491       for (std::map<uint64_t, MCFunction*>::iterator mi = FunctionMap.begin(),
 492            me = FunctionMap.end(); mi != me; ++mi)
 493         if (mi->second == 0) {
 494           // Create functions for the remaining callees we have gathered,
 495           // but we didn't find a name for them.
 496           uint64_t SectSize = 0;
 497           Sections[SectIdx].getSize(SectSize);
 498
 499           SmallVector<uint64_t, 16> Calls;
 500           MCFunction f =
 501             MCFunction::createFunctionFromMC("unknown", DisAsm.get(),
 502                                              memoryObject, mi->first,
 503                                              SectSize,
 504                                              InstrAnalysis.get(), DebugOut,
 505                                              Calls);
 506           Functions.push_back(f);
 507           mi->second = &Functions.back();
 508           for (unsigned i = 0, e = Calls.size(); i != e; ++i) {
 509             std::pair<uint64_t, MCFunction*> p(Calls[i], (MCFunction*)0);
 510             if (FunctionMap.insert(p).second)
 511               mi = FunctionMap.begin();
 512           }
 513         }
 514
 515       DenseSet<uint64_t> PrintedBlocks;
 516       for (unsigned ffi = 0, ffe = Functions.size(); ffi != ffe; ++ffi) {
 517         MCFunction &f = Functions[ffi];
 518         for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){
 519           if (!PrintedBlocks.insert(fi->first).second)
 520             continue; // We already printed this block.
 521
 522           // We assume a block has predecessors when it's the first block after
 523           // a symbol.
 524           bool hasPreds = FunctionMap.find(fi->first) != FunctionMap.end();
 525
 526           // See if this block has predecessors.
 527           // FIXME: Slow.
 528           for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
 529               ++pi)
 530             if (pi->second.contains(fi->first)) {
 531               hasPreds = true;
 532               break;
 533             }
 534
 535           uint64_t SectSize = 0, SectAddress;
 536           Sections[SectIdx].getSize(SectSize);
 537           Sections[SectIdx].getAddress(SectAddress);
 538
 539           // No predecessors, this is a data block. Print as .byte directives.
 540           if (!hasPreds) {
 541             uint64_t End = llvm::next(fi) == fe ? SectSize :
 542                                                   llvm::next(fi)->first;
 543             outs() << "# " << End-fi->first << " bytes of data:\n";
 544             for (unsigned pos = fi->first; pos != End; ++pos) {
 545               outs() << format("%8x:\t", SectAddress + pos);
 546               DumpBytes(StringRef(Bytes.data() + pos, 1));
 547               outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]);
 548             }
 549             continue;
 550           }
 551
 552           if (fi->second.contains(fi->first)) // Print a header for simple loops
 553             outs() << "# Loop begin:\n";
 554
 555           DILineInfo lastLine;
 556           // Walk over the instructions and print them.
 557           for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie;
 558                ++ii) {
 559             const MCDecodedInst &Inst = fi->second.getInsts()[ii];
 560
 561             // If there's a symbol at this address, print its name.
 562             if (FunctionMap.find(SectAddress + Inst.Address) !=
 563                 FunctionMap.end())
 564               outs() << FunctionMap[SectAddress + Inst.Address]-> getName()
 565                      << ":\n";
 566
 567             outs() << format("%8" PRIx64 ":\t", SectAddress + Inst.Address);
 568             DumpBytes(StringRef(Bytes.data() + Inst.Address, Inst.Size));
 569
 570             if (fi->second.contains(fi->first)) // Indent simple loops.
 571               outs() << '\t';
 572
 573             IP->printInst(&Inst.Inst, outs(), "");
 574
 575             // Look for relocations inside this instructions, if there is one
 576             // print its target and additional information if available.
 577             for (unsigned j = 0; j != Relocs.size(); ++j)
 578               if (Relocs[j].first >= SectAddress + Inst.Address &&
 579                   Relocs[j].first < SectAddress + Inst.Address + Inst.Size) {
 580                 StringRef SymName;
 581                 uint64_t Addr;
 582                 Relocs[j].second.getAddress(Addr);
 583                 Relocs[j].second.getName(SymName);
 584
 585                 outs() << "\t# " << SymName << ' ';
 586                 DumpAddress(Addr, Sections, MachOOF, outs());
 587               }
 588
 589             // If this instructions contains an address, see if we can evaluate
 590             // it and print additional information.
 591             uint64_t targ = InstrAnalysis->evaluateBranch(Inst.Inst,
 592                                                           Inst.Address,
 593                                                           Inst.Size);
 594             if (targ != -1ULL)
 595               DumpAddress(targ, Sections, MachOOF, outs());
 596
 597             // Print debug info.
 598             if (diContext) {
 599               DILineInfo dli =
 600                 diContext->getLineInfoForAddress(SectAddress + Inst.Address);
 601               // Print valid line info if it changed.
 602               if (dli != lastLine && dli.getLine() != 0)
 603                 outs() << "\t## " << dli.getFileName() << ':'
 604                        << dli.getLine() << ':' << dli.getColumn();
 605               lastLine = dli;
 606             }
 607
 608             outs() << '\n';
 609           }
 610         }
 611
 612         emitDOTFile((f.getName().str() + ".dot").c_str(), f, IP.get());
 613       }
 614     }
 615   }
 616 }