MachODump.cpp revision 3773fb46ba530f69530d1c4bafb7885528a27391 
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/Support/MachO.h"
17#include "llvm/Object/MachOObject.h"
18#include "llvm/ADT/OwningPtr.h"
19#include "llvm/ADT/Triple.h"
20#include "llvm/ADT/STLExtras.h"
21#include "llvm/DebugInfo/DIContext.h"
22#include "llvm/MC/MCAsmInfo.h"
23#include "llvm/MC/MCDisassembler.h"
24#include "llvm/MC/MCInst.h"
25#include "llvm/MC/MCInstPrinter.h"
26#include "llvm/MC/MCInstrAnalysis.h"
27#include "llvm/MC/MCInstrDesc.h"
28#include "llvm/MC/MCInstrInfo.h"
29#include "llvm/MC/MCSubtargetInfo.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/MemoryBuffer.h"
35#include "llvm/Support/TargetRegistry.h"
36#include "llvm/Support/TargetSelect.h"
37#include "llvm/Support/raw_ostream.h"
38#include "llvm/Support/system_error.h"
39#include <algorithm>
40#include <cstring>
41using namespace llvm;
42using namespace object;
43
44static cl::opt<bool>
45  CFG("cfg", cl::desc("Create a CFG for every symbol in the object file and"
46                      "write it to a graphviz file (MachO-only)"));
47
48static cl::opt<bool>
49  UseDbg("g", cl::desc("Print line information from debug info if available"));
50
51static cl::opt<std::string>
52  DSYMFile("dsym", cl::desc("Use .dSYM file for debug info"));
53
54static const Target *GetTarget(const MachOObject *MachOObj) {
55  // Figure out the target triple.
56  llvm::Triple TT("unknown-unknown-unknown");
57  switch (MachOObj->getHeader().CPUType) {
58  case llvm::MachO::CPUTypeI386:
59    TT.setArch(Triple::ArchType(Triple::x86));
60    break;
61  case llvm::MachO::CPUTypeX86_64:
62    TT.setArch(Triple::ArchType(Triple::x86_64));
63    break;
64  case llvm::MachO::CPUTypeARM:
65    TT.setArch(Triple::ArchType(Triple::arm));
66    break;
67  case llvm::MachO::CPUTypePowerPC:
68    TT.setArch(Triple::ArchType(Triple::ppc));
69    break;
70  case llvm::MachO::CPUTypePowerPC64:
71    TT.setArch(Triple::ArchType(Triple::ppc64));
72    break;
73  }
74
75  TripleName = TT.str();
76
77  // Get the target specific parser.
78  std::string Error;
79  const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
80  if (TheTarget)
81    return TheTarget;
82
83  errs() << "llvm-objdump: error: unable to get target for '" << TripleName
84         << "', see --version and --triple.\n";
85  return 0;
86}
87
88struct Section {
89  char Name[16];
90  uint64_t Address;
91  uint64_t Size;
92  uint32_t Offset;
93  uint32_t NumRelocs;
94  uint64_t RelocTableOffset;
95};
96
97struct Symbol {
98  uint64_t Value;
99  uint32_t StringIndex;
100  uint8_t SectionIndex;
101  bool operator<(const Symbol &RHS) const { return Value < RHS.Value; }
102};
103
104template <typename T>
105static Section copySection(const T &Sect) {
106  Section S;
107  memcpy(S.Name, Sect->Name, 16);
108  S.Address = Sect->Address;
109  S.Size = Sect->Size;
110  S.Offset = Sect->Offset;
111  S.NumRelocs = Sect->NumRelocationTableEntries;
112  S.RelocTableOffset = Sect->RelocationTableOffset;
113  return S;
114}
115
116template <typename T>
117static Symbol copySymbol(const T &STE) {
118  Symbol S;
119  S.StringIndex = STE->StringIndex;
120  S.SectionIndex = STE->SectionIndex;
121  S.Value = STE->Value;
122  return S;
123}
124
125// Print additional information about an address, if available.
126static void DumpAddress(uint64_t Address, ArrayRef<Section> Sections,
127                        MachOObject *MachOObj, raw_ostream &OS) {
128  for (unsigned i = 0; i != Sections.size(); ++i) {
129    uint64_t addr = Address-Sections[i].Address;
130    if (Sections[i].Address <= Address &&
131        Sections[i].Address + Sections[i].Size > Address) {
132      StringRef bytes = MachOObj->getData(Sections[i].Offset,
133                                          Sections[i].Size);
134      // Print constant strings.
135      if (!strcmp(Sections[i].Name, "__cstring"))
136        OS << '"' << bytes.substr(addr, bytes.find('\0', addr)) << '"';
137      // Print constant CFStrings.
138      if (!strcmp(Sections[i].Name, "__cfstring"))
139        OS << "@\"" << bytes.substr(addr, bytes.find('\0', addr)) << '"';
140    }
141  }
142}
143
144typedef std::map<uint64_t, MCFunction*> FunctionMapTy;
145typedef SmallVector<MCFunction, 16> FunctionListTy;
146static void createMCFunctionAndSaveCalls(StringRef Name,
147                                         const MCDisassembler *DisAsm,
148                                         MemoryObject &Object, uint64_t Start,
149                                         uint64_t End,
150                                         MCInstrAnalysis *InstrAnalysis,
151                                         uint64_t Address,
152                                         raw_ostream &DebugOut,
153                                         FunctionMapTy &FunctionMap,
154                                         FunctionListTy &Functions) {
155  SmallVector<uint64_t, 16> Calls;
156  MCFunction f =
157    MCFunction::createFunctionFromMC(Name, DisAsm, Object, Start, End,
158                                     InstrAnalysis, DebugOut, Calls);
159  Functions.push_back(f);
160  FunctionMap[Address] = &Functions.back();
161
162  // Add the gathered callees to the map.
163  for (unsigned i = 0, e = Calls.size(); i != e; ++i)
164    FunctionMap.insert(std::make_pair(Calls[i], (MCFunction*)0));
165}
166
167// Write a graphviz file for the CFG inside an MCFunction.
168static void emitDOTFile(const char *FileName, const MCFunction &f,
169                        MCInstPrinter *IP) {
170  // Start a new dot file.
171  std::string Error;
172  raw_fd_ostream Out(FileName, Error);
173  if (!Error.empty()) {
174    errs() << "llvm-objdump: warning: " << Error << '\n';
175    return;
176  }
177
178  Out << "digraph " << f.getName() << " {\n";
179  Out << "graph [ rankdir = \"LR\" ];\n";
180  for (MCFunction::iterator i = f.begin(), e = f.end(); i != e; ++i) {
181    bool hasPreds = false;
182    // Only print blocks that have predecessors.
183    // FIXME: Slow.
184    for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
185        ++pi)
186      if (pi->second.contains(i->first)) {
187        hasPreds = true;
188        break;
189      }
190
191    if (!hasPreds && i != f.begin())
192      continue;
193
194    Out << '"' << i->first << "\" [ label=\"<a>";
195    // Print instructions.
196    for (unsigned ii = 0, ie = i->second.getInsts().size(); ii != ie;
197        ++ii) {
198      // Escape special chars and print the instruction in mnemonic form.
199      std::string Str;
200      raw_string_ostream OS(Str);
201      IP->printInst(&i->second.getInsts()[ii].Inst, OS, "");
202      Out << DOT::EscapeString(OS.str()) << '|';
203    }
204    Out << "<o>\" shape=\"record\" ];\n";
205
206    // Add edges.
207    for (MCBasicBlock::succ_iterator si = i->second.succ_begin(),
208        se = i->second.succ_end(); si != se; ++si)
209      Out << i->first << ":o -> " << *si <<":a\n";
210  }
211  Out << "}\n";
212}
213
214static void getSectionsAndSymbols(const macho::Header &Header,
215                                  MachOObject *MachOObj,
216                             InMemoryStruct<macho::SymtabLoadCommand> *SymtabLC,
217                                  std::vector<Section> &Sections,
218                                  std::vector<Symbol> &Symbols,
219                                  SmallVectorImpl<uint64_t> &FoundFns) {
220  // Make a list of all symbols in the object file.
221  for (unsigned i = 0; i != Header.NumLoadCommands; ++i) {
222    const MachOObject::LoadCommandInfo &LCI = MachOObj->getLoadCommandInfo(i);
223    if (LCI.Command.Type == macho::LCT_Segment) {
224      InMemoryStruct<macho::SegmentLoadCommand> SegmentLC;
225      MachOObj->ReadSegmentLoadCommand(LCI, SegmentLC);
226
227      // Store the sections in this segment.
228      for (unsigned SectNum = 0; SectNum != SegmentLC->NumSections; ++SectNum) {
229        InMemoryStruct<macho::Section> Sect;
230        MachOObj->ReadSection(LCI, SectNum, Sect);
231        Sections.push_back(copySection(Sect));
232
233      }
234    } else if (LCI.Command.Type == macho::LCT_Segment64) {
235      InMemoryStruct<macho::Segment64LoadCommand> Segment64LC;
236      MachOObj->ReadSegment64LoadCommand(LCI, Segment64LC);
237
238      // Store the sections in this segment.
239      for (unsigned SectNum = 0; SectNum != Segment64LC->NumSections;
240          ++SectNum) {
241        InMemoryStruct<macho::Section64> Sect64;
242        MachOObj->ReadSection64(LCI, SectNum, Sect64);
243        Sections.push_back(copySection(Sect64));
244      }
245    } else if (LCI.Command.Type == macho::LCT_FunctionStarts) {
246      // We found a function starts segment, parse the addresses for later
247      // consumption.
248      InMemoryStruct<macho::LinkeditDataLoadCommand> LLC;
249      MachOObj->ReadLinkeditDataLoadCommand(LCI, LLC);
250
251      MachOObj->ReadULEB128s(LLC->DataOffset, FoundFns);
252    }
253  }
254  // Store the symbols.
255  if (SymtabLC) {
256    for (unsigned i = 0; i != (*SymtabLC)->NumSymbolTableEntries; ++i) {
257      if (MachOObj->is64Bit()) {
258        InMemoryStruct<macho::Symbol64TableEntry> STE;
259        MachOObj->ReadSymbol64TableEntry((*SymtabLC)->SymbolTableOffset, i,
260                                         STE);
261        Symbols.push_back(copySymbol(STE));
262      } else {
263        InMemoryStruct<macho::SymbolTableEntry> STE;
264        MachOObj->ReadSymbolTableEntry((*SymtabLC)->SymbolTableOffset, i,
265                                       STE);
266        Symbols.push_back(copySymbol(STE));
267      }
268    }
269  }
270}
271
272void llvm::DisassembleInputMachO(StringRef Filename) {
273  OwningPtr<MemoryBuffer> Buff;
274
275  if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
276    errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n";
277    return;
278  }
279
280  OwningPtr<MachOObject> MachOObj(MachOObject::LoadFromBuffer(Buff.take()));
281
282  const Target *TheTarget = GetTarget(MachOObj.get());
283  if (!TheTarget) {
284    // GetTarget prints out stuff.
285    return;
286  }
287  const MCInstrInfo *InstrInfo = TheTarget->createMCInstrInfo();
288  OwningPtr<MCInstrAnalysis>
289    InstrAnalysis(TheTarget->createMCInstrAnalysis(InstrInfo));
290
291  // Set up disassembler.
292  OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName));
293  OwningPtr<const MCSubtargetInfo>
294    STI(TheTarget->createMCSubtargetInfo(TripleName, "", ""));
295  OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
296  int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
297  OwningPtr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
298                              AsmPrinterVariant, *AsmInfo, *STI));
299
300  if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
301    errs() << "error: couldn't initialize disassembler for target "
302           << TripleName << '\n';
303    return;
304  }
305
306  outs() << '\n' << Filename << ":\n\n";
307
308  const macho::Header &Header = MachOObj->getHeader();
309
310  const MachOObject::LoadCommandInfo *SymtabLCI = 0;
311  // First, find the symbol table segment.
312  for (unsigned i = 0; i != Header.NumLoadCommands; ++i) {
313    const MachOObject::LoadCommandInfo &LCI = MachOObj->getLoadCommandInfo(i);
314    if (LCI.Command.Type == macho::LCT_Symtab) {
315      SymtabLCI = &LCI;
316      break;
317    }
318  }
319
320  // Read and register the symbol table data.
321  InMemoryStruct<macho::SymtabLoadCommand> SymtabLC;
322  MachOObj->ReadSymtabLoadCommand(*SymtabLCI, SymtabLC);
323  MachOObj->RegisterStringTable(*SymtabLC);
324
325  std::vector<Section> Sections;
326  std::vector<Symbol> Symbols;
327  SmallVector<uint64_t, 8> FoundFns;
328
329  getSectionsAndSymbols(Header, MachOObj.get(), &SymtabLC, Sections, Symbols,
330                        FoundFns);
331
332  // Make a copy of the unsorted symbol list. FIXME: duplication
333  std::vector<Symbol> UnsortedSymbols(Symbols);
334  // Sort the symbols by address, just in case they didn't come in that way.
335  array_pod_sort(Symbols.begin(), Symbols.end());
336
337#ifndef NDEBUG
338  raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
339#else
340  raw_ostream &DebugOut = nulls();
341#endif
342
343  StringRef DebugAbbrevSection, DebugInfoSection, DebugArangesSection,
344            DebugLineSection, DebugStrSection;
345  OwningPtr<DIContext> diContext;
346  OwningPtr<MachOObject> DSYMObj;
347  MachOObject *DbgInfoObj = MachOObj.get();
348  // Try to find debug info and set up the DIContext for it.
349  if (UseDbg) {
350    ArrayRef<Section> DebugSections = Sections;
351    std::vector<Section> DSYMSections;
352
353    // A separate DSym file path was specified, parse it as a macho file,
354    // get the sections and supply it to the section name parsing machinery.
355    if (!DSYMFile.empty()) {
356      OwningPtr<MemoryBuffer> Buf;
357      if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile.c_str(), Buf)) {
358        errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n';
359        return;
360      }
361      DSYMObj.reset(MachOObject::LoadFromBuffer(Buf.take()));
362      const macho::Header &Header = DSYMObj->getHeader();
363
364      std::vector<Symbol> Symbols;
365      SmallVector<uint64_t, 8> FoundFns;
366      getSectionsAndSymbols(Header, DSYMObj.get(), 0, DSYMSections, Symbols,
367                            FoundFns);
368      DebugSections = DSYMSections;
369      DbgInfoObj = DSYMObj.get();
370    }
371
372    // Find the named debug info sections.
373    for (unsigned SectIdx = 0; SectIdx != DebugSections.size(); SectIdx++) {
374      if (!strcmp(DebugSections[SectIdx].Name, "__debug_abbrev"))
375        DebugAbbrevSection = DbgInfoObj->getData(DebugSections[SectIdx].Offset,
376                                                 DebugSections[SectIdx].Size);
377      else if (!strcmp(DebugSections[SectIdx].Name, "__debug_info"))
378        DebugInfoSection = DbgInfoObj->getData(DebugSections[SectIdx].Offset,
379                                               DebugSections[SectIdx].Size);
380      else if (!strcmp(DebugSections[SectIdx].Name, "__debug_aranges"))
381        DebugArangesSection = DbgInfoObj->getData(DebugSections[SectIdx].Offset,
382                                                  DebugSections[SectIdx].Size);
383      else if (!strcmp(DebugSections[SectIdx].Name, "__debug_line"))
384        DebugLineSection = DbgInfoObj->getData(DebugSections[SectIdx].Offset,
385                                               DebugSections[SectIdx].Size);
386      else if (!strcmp(DebugSections[SectIdx].Name, "__debug_str"))
387        DebugStrSection = DbgInfoObj->getData(DebugSections[SectIdx].Offset,
388                                              DebugSections[SectIdx].Size);
389    }
390
391    // Setup the DIContext.
392    diContext.reset(DIContext::getDWARFContext(DbgInfoObj->isLittleEndian(),
393                                               DebugInfoSection,
394                                               DebugAbbrevSection,
395                                               DebugArangesSection,
396                                               DebugLineSection,
397                                               DebugStrSection));
398  }
399
400  FunctionMapTy FunctionMap;
401  FunctionListTy Functions;
402
403  for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
404    if (strcmp(Sections[SectIdx].Name, "__text"))
405      continue; // Skip non-text sections
406
407    // Insert the functions from the function starts segment into our map.
408    uint64_t VMAddr = Sections[SectIdx].Address - Sections[SectIdx].Offset;
409    for (unsigned i = 0, e = FoundFns.size(); i != e; ++i)
410      FunctionMap.insert(std::make_pair(FoundFns[i]+VMAddr, (MCFunction*)0));
411
412    StringRef Bytes = MachOObj->getData(Sections[SectIdx].Offset,
413                                        Sections[SectIdx].Size);
414    StringRefMemoryObject memoryObject(Bytes);
415    bool symbolTableWorked = false;
416
417    // Parse relocations.
418    std::vector<std::pair<uint64_t, uint32_t> > Relocs;
419    for (unsigned j = 0; j != Sections[SectIdx].NumRelocs; ++j) {
420      InMemoryStruct<macho::RelocationEntry> RE;
421      MachOObj->ReadRelocationEntry(Sections[SectIdx].RelocTableOffset, j, RE);
422      Relocs.push_back(std::make_pair(RE->Word0, RE->Word1 & 0xffffff));
423    }
424    array_pod_sort(Relocs.begin(), Relocs.end());
425
426    // Disassemble symbol by symbol.
427    for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
428      // Make sure the symbol is defined in this section.
429      if ((unsigned)Symbols[SymIdx].SectionIndex - 1 != SectIdx)
430        continue;
431
432      // Start at the address of the symbol relative to the section's address.
433      uint64_t Start = Symbols[SymIdx].Value - Sections[SectIdx].Address;
434      // Stop disassembling either at the beginning of the next symbol or at
435      // the end of the section.
436      uint64_t End = (SymIdx+1 == Symbols.size() ||
437          Symbols[SymIdx].SectionIndex != Symbols[SymIdx+1].SectionIndex) ?
438          Sections[SectIdx].Size :
439          Symbols[SymIdx+1].Value - Sections[SectIdx].Address;
440      uint64_t Size;
441
442      if (Start >= End)
443        continue;
444
445      symbolTableWorked = true;
446
447      if (!CFG) {
448        // Normal disassembly, print addresses, bytes and mnemonic form.
449        outs() << MachOObj->getStringAtIndex(Symbols[SymIdx].StringIndex)
450          << ":\n";
451        DILineInfo lastLine;
452        for (uint64_t Index = Start; Index < End; Index += Size) {
453          MCInst Inst;
454
455          if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
456                                     DebugOut, nulls())) {
457            outs() << format("%8llx:\t", Sections[SectIdx].Address + Index);
458            DumpBytes(StringRef(Bytes.data() + Index, Size));
459            IP->printInst(&Inst, outs(), "");
460
461            // Print debug info.
462            if (diContext) {
463              DILineInfo dli =
464                diContext->getLineInfoForAddress(Sections[SectIdx].Address +
465                                                 Index);
466              // Print valid line info if it changed.
467              if (dli != lastLine && dli.getLine() != 0)
468                outs() << "\t## " << dli.getFileName() << ':'
469                       << dli.getLine() << ':' << dli.getColumn();
470              lastLine = dli;
471            }
472            outs() << "\n";
473          } else {
474            errs() << "llvm-objdump: warning: invalid instruction encoding\n";
475            if (Size == 0)
476              Size = 1; // skip illegible bytes
477          }
478        }
479      } else {
480        // Create CFG and use it for disassembly.
481        createMCFunctionAndSaveCalls(
482            MachOObj->getStringAtIndex(Symbols[SymIdx].StringIndex),
483            DisAsm.get(), memoryObject, Start, End, InstrAnalysis.get(),
484            Start, DebugOut, FunctionMap, Functions);
485      }
486    }
487
488    if (CFG) {
489      if (!symbolTableWorked) {
490        // Reading the symbol table didn't work, create a big __TEXT symbol.
491        createMCFunctionAndSaveCalls("__TEXT", DisAsm.get(), memoryObject,
492                                     0, Sections[SectIdx].Size,
493                                     InstrAnalysis.get(),
494                                     Sections[SectIdx].Offset, DebugOut,
495                                     FunctionMap, Functions);
496      }
497      for (std::map<uint64_t, MCFunction*>::iterator mi = FunctionMap.begin(),
498           me = FunctionMap.end(); mi != me; ++mi)
499        if (mi->second == 0) {
500          // Create functions for the remaining callees we have gathered,
501          // but we didn't find a name for them.
502          SmallVector<uint64_t, 16> Calls;
503          MCFunction f =
504            MCFunction::createFunctionFromMC("unknown", DisAsm.get(),
505                                             memoryObject, mi->first,
506                                             Sections[SectIdx].Size,
507                                             InstrAnalysis.get(), DebugOut,
508                                             Calls);
509          Functions.push_back(f);
510          mi->second = &Functions.back();
511          for (unsigned i = 0, e = Calls.size(); i != e; ++i) {
512            std::pair<uint64_t, MCFunction*> p(Calls[i], (MCFunction*)0);
513            if (FunctionMap.insert(p).second)
514              mi = FunctionMap.begin();
515          }
516        }
517
518      DenseSet<uint64_t> PrintedBlocks;
519      for (unsigned ffi = 0, ffe = Functions.size(); ffi != ffe; ++ffi) {
520        MCFunction &f = Functions[ffi];
521        for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){
522          if (!PrintedBlocks.insert(fi->first).second)
523            continue; // We already printed this block.
524
525          // We assume a block has predecessors when it's the first block after
526          // a symbol.
527          bool hasPreds = FunctionMap.find(fi->first) != FunctionMap.end();
528
529          // See if this block has predecessors.
530          // FIXME: Slow.
531          for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
532              ++pi)
533            if (pi->second.contains(fi->first)) {
534              hasPreds = true;
535              break;
536            }
537
538          // No predecessors, this is a data block. Print as .byte directives.
539          if (!hasPreds) {
540            uint64_t End = llvm::next(fi) == fe ? Sections[SectIdx].Size :
541                                                  llvm::next(fi)->first;
542            outs() << "# " << End-fi->first << " bytes of data:\n";
543            for (unsigned pos = fi->first; pos != End; ++pos) {
544              outs() << format("%8x:\t", Sections[SectIdx].Address + pos);
545              DumpBytes(StringRef(Bytes.data() + pos, 1));
546              outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]);
547            }
548            continue;
549          }
550
551          if (fi->second.contains(fi->first)) // Print a header for simple loops
552            outs() << "# Loop begin:\n";
553
554          DILineInfo lastLine;
555          // Walk over the instructions and print them.
556          for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie;
557               ++ii) {
558            const MCDecodedInst &Inst = fi->second.getInsts()[ii];
559
560            // If there's a symbol at this address, print its name.
561            if (FunctionMap.find(Sections[SectIdx].Address + Inst.Address) !=
562                FunctionMap.end())
563              outs() << FunctionMap[Sections[SectIdx].Address + Inst.Address]->
564                                                             getName() << ":\n";
565
566            outs() << format("%8llx:\t", Sections[SectIdx].Address +
567                                         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 >= Sections[SectIdx].Address + Inst.Address &&
579                  Relocs[j].first < Sections[SectIdx].Address + Inst.Address +
580                                    Inst.Size) {
581                outs() << "\t# "
582                   << MachOObj->getStringAtIndex(
583                                  UnsortedSymbols[Relocs[j].second].StringIndex)
584                   << ' ';
585                DumpAddress(UnsortedSymbols[Relocs[j].second].Value, Sections,
586                            MachOObj.get(), 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, MachOObj.get(), outs());
596
597            // Print debug info.
598            if (diContext) {
599              DILineInfo dli =
600                diContext->getLineInfoForAddress(Sections[SectIdx].Address +
601                                                 Inst.Address);
602              // Print valid line info if it changed.
603              if (dli != lastLine && dli.getLine() != 0)
604                outs() << "\t## " << dli.getFileName() << ':'
605                       << dli.getLine() << ':' << dli.getColumn();
606              lastLine = dli;
607            }
608
609            outs() << '\n';
610          }
611        }
612
613        emitDOTFile((f.getName().str() + ".dot").c_str(), f, IP.get());
614      }
615    }
616  }
617}
618