MachODump.cpp revision 7d3f8b8e48854b890762ccb96f7817568541732b 
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/MachO.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 SymbolSorter {
89  bool operator()(const SymbolRef &A, const SymbolRef &B) {
90    SymbolRef::Type AType, BType;
91    A.getType(AType);
92    B.getType(BType);
93
94    uint64_t AAddr, BAddr;
95    if (AType != SymbolRef::ST_Function)
96      AAddr = 0;
97    else
98      A.getAddress(AAddr);
99    if (BType != SymbolRef::ST_Function)
100      BAddr = 0;
101    else
102      B.getAddress(BAddr);
103    return AAddr < BAddr;
104  }
105};
106
107// Print additional information about an address, if available.
108static void DumpAddress(uint64_t Address, ArrayRef<SectionRef> Sections,
109                        MachOObject *MachOObj, raw_ostream &OS) {
110  for (unsigned i = 0; i != Sections.size(); ++i) {
111    uint64_t SectAddr = 0, SectSize = 0;
112    Sections[i].getAddress(SectAddr);
113    Sections[i].getSize(SectSize);
114    uint64_t addr = SectAddr;
115    if (SectAddr <= Address &&
116        SectAddr + SectSize > Address) {
117      StringRef bytes, name;
118      Sections[i].getContents(bytes);
119      Sections[i].getName(name);
120      // Print constant strings.
121      if (!name.compare("__cstring"))
122        OS << '"' << bytes.substr(addr, bytes.find('\0', addr)) << '"';
123      // Print constant CFStrings.
124      if (!name.compare("__cfstring"))
125        OS << "@\"" << bytes.substr(addr, bytes.find('\0', addr)) << '"';
126    }
127  }
128}
129
130typedef std::map<uint64_t, MCFunction*> FunctionMapTy;
131typedef SmallVector<MCFunction, 16> FunctionListTy;
132static void createMCFunctionAndSaveCalls(StringRef Name,
133                                         const MCDisassembler *DisAsm,
134                                         MemoryObject &Object, uint64_t Start,
135                                         uint64_t End,
136                                         MCInstrAnalysis *InstrAnalysis,
137                                         uint64_t Address,
138                                         raw_ostream &DebugOut,
139                                         FunctionMapTy &FunctionMap,
140                                         FunctionListTy &Functions) {
141  SmallVector<uint64_t, 16> Calls;
142  MCFunction f =
143    MCFunction::createFunctionFromMC(Name, DisAsm, Object, Start, End,
144                                     InstrAnalysis, DebugOut, Calls);
145  Functions.push_back(f);
146  FunctionMap[Address] = &Functions.back();
147
148  // Add the gathered callees to the map.
149  for (unsigned i = 0, e = Calls.size(); i != e; ++i)
150    FunctionMap.insert(std::make_pair(Calls[i], (MCFunction*)0));
151}
152
153// Write a graphviz file for the CFG inside an MCFunction.
154static void emitDOTFile(const char *FileName, const MCFunction &f,
155                        MCInstPrinter *IP) {
156  // Start a new dot file.
157  std::string Error;
158  raw_fd_ostream Out(FileName, Error);
159  if (!Error.empty()) {
160    errs() << "llvm-objdump: warning: " << Error << '\n';
161    return;
162  }
163
164  Out << "digraph " << f.getName() << " {\n";
165  Out << "graph [ rankdir = \"LR\" ];\n";
166  for (MCFunction::iterator i = f.begin(), e = f.end(); i != e; ++i) {
167    bool hasPreds = false;
168    // Only print blocks that have predecessors.
169    // FIXME: Slow.
170    for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
171        ++pi)
172      if (pi->second.contains(i->first)) {
173        hasPreds = true;
174        break;
175      }
176
177    if (!hasPreds && i != f.begin())
178      continue;
179
180    Out << '"' << i->first << "\" [ label=\"<a>";
181    // Print instructions.
182    for (unsigned ii = 0, ie = i->second.getInsts().size(); ii != ie;
183        ++ii) {
184      // Escape special chars and print the instruction in mnemonic form.
185      std::string Str;
186      raw_string_ostream OS(Str);
187      IP->printInst(&i->second.getInsts()[ii].Inst, OS, "");
188      Out << DOT::EscapeString(OS.str()) << '|';
189    }
190    Out << "<o>\" shape=\"record\" ];\n";
191
192    // Add edges.
193    for (MCBasicBlock::succ_iterator si = i->second.succ_begin(),
194        se = i->second.succ_end(); si != se; ++si)
195      Out << i->first << ":o -> " << *si <<":a\n";
196  }
197  Out << "}\n";
198}
199
200static void getSectionsAndSymbols(const macho::Header &Header,
201                                  MachOObjectFile *MachOObj,
202                             InMemoryStruct<macho::SymtabLoadCommand> *SymtabLC,
203                                  std::vector<SectionRef> &Sections,
204                                  std::vector<SymbolRef> &Symbols,
205                                  SmallVectorImpl<uint64_t> &FoundFns) {
206  error_code ec;
207  for (symbol_iterator SI = MachOObj->begin_symbols(),
208       SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec))
209    Symbols.push_back(*SI);
210
211  for (section_iterator SI = MachOObj->begin_sections(),
212       SE = MachOObj->end_sections(); SI != SE; SI.increment(ec)) {
213    SectionRef SR = *SI;
214    StringRef SectName;
215    SR.getName(SectName);
216    Sections.push_back(*SI);
217  }
218
219  for (unsigned i = 0; i != Header.NumLoadCommands; ++i) {
220    const MachOObject::LoadCommandInfo &LCI =
221       MachOObj->getObject()->getLoadCommandInfo(i);
222    if (LCI.Command.Type == macho::LCT_FunctionStarts) {
223      // We found a function starts segment, parse the addresses for later
224      // consumption.
225      InMemoryStruct<macho::LinkeditDataLoadCommand> LLC;
226      MachOObj->getObject()->ReadLinkeditDataLoadCommand(LCI, LLC);
227
228      MachOObj->getObject()->ReadULEB128s(LLC->DataOffset, FoundFns);
229    }
230  }
231}
232
233void llvm::DisassembleInputMachO(StringRef Filename) {
234  OwningPtr<MemoryBuffer> Buff;
235
236  if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
237    errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n";
238    return;
239  }
240
241  OwningPtr<MachOObjectFile> MachOOF(static_cast<MachOObjectFile*>(
242        ObjectFile::createMachOObjectFile(Buff.take())));
243  MachOObject *MachOObj = MachOOF->getObject();
244
245  const Target *TheTarget = GetTarget(MachOObj);
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  int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
260  OwningPtr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
261                              AsmPrinterVariant, *AsmInfo, *STI));
262
263  if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
264    errs() << "error: couldn't initialize disassembler for target "
265           << TripleName << '\n';
266    return;
267  }
268
269  outs() << '\n' << Filename << ":\n\n";
270
271  const macho::Header &Header = MachOObj->getHeader();
272
273  const MachOObject::LoadCommandInfo *SymtabLCI = 0;
274  // First, find the symbol table segment.
275  for (unsigned i = 0; i != Header.NumLoadCommands; ++i) {
276    const MachOObject::LoadCommandInfo &LCI = MachOObj->getLoadCommandInfo(i);
277    if (LCI.Command.Type == macho::LCT_Symtab) {
278      SymtabLCI = &LCI;
279      break;
280    }
281  }
282
283  // Read and register the symbol table data.
284  InMemoryStruct<macho::SymtabLoadCommand> SymtabLC;
285  MachOObj->ReadSymtabLoadCommand(*SymtabLCI, SymtabLC);
286  MachOObj->RegisterStringTable(*SymtabLC);
287
288  std::vector<SectionRef> Sections;
289  std::vector<SymbolRef> Symbols;
290  SmallVector<uint64_t, 8> FoundFns;
291
292  getSectionsAndSymbols(Header, MachOOF.get(), &SymtabLC, Sections, Symbols,
293                        FoundFns);
294
295  // Make a copy of the unsorted symbol list. FIXME: duplication
296  std::vector<SymbolRef> UnsortedSymbols(Symbols);
297  // Sort the symbols by address, just in case they didn't come in that way.
298  std::sort(Symbols.begin(), Symbols.end(), SymbolSorter());
299
300#ifndef NDEBUG
301  raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
302#else
303  raw_ostream &DebugOut = nulls();
304#endif
305
306  StringRef DebugAbbrevSection, DebugInfoSection, DebugArangesSection,
307            DebugLineSection, DebugStrSection;
308  OwningPtr<DIContext> diContext;
309  OwningPtr<MachOObjectFile> DSYMObj;
310  MachOObject *DbgInfoObj = MachOObj;
311  // Try to find debug info and set up the DIContext for it.
312  if (UseDbg) {
313    ArrayRef<SectionRef> DebugSections = Sections;
314    std::vector<SectionRef> DSYMSections;
315
316    // A separate DSym file path was specified, parse it as a macho file,
317    // get the sections and supply it to the section name parsing machinery.
318    if (!DSYMFile.empty()) {
319      OwningPtr<MemoryBuffer> Buf;
320      if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile.c_str(), Buf)) {
321        errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n';
322        return;
323      }
324      DSYMObj.reset(static_cast<MachOObjectFile*>(
325            ObjectFile::createMachOObjectFile(Buf.take())));
326      const macho::Header &Header = DSYMObj->getObject()->getHeader();
327
328      std::vector<SymbolRef> Symbols;
329      SmallVector<uint64_t, 8> FoundFns;
330      getSectionsAndSymbols(Header, DSYMObj.get(), 0, DSYMSections, Symbols,
331                            FoundFns);
332      DebugSections = DSYMSections;
333      DbgInfoObj = DSYMObj.get()->getObject();
334    }
335
336    // Find the named debug info sections.
337    for (unsigned SectIdx = 0; SectIdx != DebugSections.size(); SectIdx++) {
338      StringRef SectName;
339      if (!DebugSections[SectIdx].getName(SectName)) {
340        if (SectName.equals("__DWARF,__debug_abbrev"))
341          DebugSections[SectIdx].getContents(DebugAbbrevSection);
342        else if (SectName.equals("__DWARF,__debug_info"))
343          DebugSections[SectIdx].getContents(DebugInfoSection);
344        else if (SectName.equals("__DWARF,__debug_aranges"))
345          DebugSections[SectIdx].getContents(DebugArangesSection);
346        else if (SectName.equals("__DWARF,__debug_line"))
347          DebugSections[SectIdx].getContents(DebugLineSection);
348        else if (SectName.equals("__DWARF,__debug_str"))
349          DebugSections[SectIdx].getContents(DebugStrSection);
350      }
351    }
352
353    // Setup the DIContext.
354    diContext.reset(DIContext::getDWARFContext(DbgInfoObj->isLittleEndian(),
355                                               DebugInfoSection,
356                                               DebugAbbrevSection,
357                                               DebugArangesSection,
358                                               DebugLineSection,
359                                               DebugStrSection));
360  }
361
362  FunctionMapTy FunctionMap;
363  FunctionListTy Functions;
364
365  for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
366    StringRef SectName;
367    if (Sections[SectIdx].getName(SectName) ||
368        SectName.compare("__TEXT,__text"))
369      continue; // Skip non-text sections
370
371    // Insert the functions from the function starts segment into our map.
372    uint64_t VMAddr;
373    Sections[SectIdx].getAddress(VMAddr);
374    for (unsigned i = 0, e = FoundFns.size(); i != e; ++i) {
375      StringRef SectBegin;
376      Sections[SectIdx].getContents(SectBegin);
377      uint64_t Offset = (uint64_t)SectBegin.data();
378      FunctionMap.insert(std::make_pair(VMAddr + FoundFns[i]-Offset,
379                                        (MCFunction*)0));
380    }
381
382    StringRef Bytes;
383    Sections[SectIdx].getContents(Bytes);
384    StringRefMemoryObject memoryObject(Bytes);
385    bool symbolTableWorked = false;
386
387    // Parse relocations.
388    std::vector<std::pair<uint64_t, SymbolRef> > Relocs;
389    error_code ec;
390    for (relocation_iterator RI = Sections[SectIdx].begin_relocations(),
391         RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) {
392      uint64_t RelocOffset, SectionAddress;
393      RI->getAddress(RelocOffset);
394      Sections[SectIdx].getAddress(SectionAddress);
395      RelocOffset -= SectionAddress;
396
397      SymbolRef RelocSym;
398      RI->getSymbol(RelocSym);
399
400      Relocs.push_back(std::make_pair(RelocOffset, RelocSym));
401    }
402    array_pod_sort(Relocs.begin(), Relocs.end());
403
404    // Disassemble symbol by symbol.
405    for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
406      StringRef SymName;
407      Symbols[SymIdx].getName(SymName);
408
409      SymbolRef::Type ST;
410      Symbols[SymIdx].getType(ST);
411      if (ST != SymbolRef::ST_Function)
412        continue;
413
414      // Make sure the symbol is defined in this section.
415      bool containsSym = false;
416      Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym);
417      if (!containsSym)
418        continue;
419
420      // Start at the address of the symbol relative to the section's address.
421      uint64_t Start = 0;
422      Symbols[SymIdx].getOffset(Start);
423
424      // Stop disassembling either at the beginning of the next symbol or at
425      // the end of the section.
426      bool containsNextSym = true;
427      uint64_t NextSym = 0;
428      uint64_t NextSymIdx = SymIdx+1;
429      while (Symbols.size() > NextSymIdx) {
430        SymbolRef::Type NextSymType;
431        Symbols[NextSymIdx].getType(NextSymType);
432        if (NextSymType == SymbolRef::ST_Function) {
433          Sections[SectIdx].containsSymbol(Symbols[NextSymIdx],
434                                           containsNextSym);
435          Symbols[NextSymIdx].getOffset(NextSym);
436          break;
437        }
438        ++NextSymIdx;
439      }
440
441      uint64_t SectSize;
442      Sections[SectIdx].getSize(SectSize);
443      uint64_t End = containsNextSym ?  NextSym : SectSize;
444      uint64_t Size;
445
446      symbolTableWorked = true;
447
448      if (!CFG) {
449        // Normal disassembly, print addresses, bytes and mnemonic form.
450        StringRef SymName;
451        Symbols[SymIdx].getName(SymName);
452
453        outs() << SymName << ":\n";
454        DILineInfo lastLine;
455        for (uint64_t Index = Start; Index < End; Index += Size) {
456          MCInst Inst;
457
458          if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
459                                     DebugOut, nulls())) {
460            uint64_t SectAddress = 0;
461            Sections[SectIdx].getAddress(SectAddress);
462            outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
463
464            DumpBytes(StringRef(Bytes.data() + Index, Size));
465            IP->printInst(&Inst, outs(), "");
466
467            // Print debug info.
468            if (diContext) {
469              DILineInfo dli =
470                diContext->getLineInfoForAddress(SectAddress + Index);
471              // Print valid line info if it changed.
472              if (dli != lastLine && dli.getLine() != 0)
473                outs() << "\t## " << dli.getFileName() << ':'
474                       << dli.getLine() << ':' << dli.getColumn();
475              lastLine = dli;
476            }
477            outs() << "\n";
478          } else {
479            errs() << "llvm-objdump: warning: invalid instruction encoding\n";
480            if (Size == 0)
481              Size = 1; // skip illegible bytes
482          }
483        }
484      } else {
485        // Create CFG and use it for disassembly.
486        StringRef SymName;
487        Symbols[SymIdx].getName(SymName);
488        createMCFunctionAndSaveCalls(
489            SymName, DisAsm.get(), memoryObject, Start, End,
490            InstrAnalysis.get(), Start, DebugOut, FunctionMap, Functions);
491      }
492    }
493
494    if (CFG) {
495      if (!symbolTableWorked) {
496        // Reading the symbol table didn't work, create a big __TEXT symbol.
497        uint64_t SectSize = 0, SectAddress = 0;
498        Sections[SectIdx].getSize(SectSize);
499        Sections[SectIdx].getAddress(SectAddress);
500        createMCFunctionAndSaveCalls("__TEXT", DisAsm.get(), memoryObject,
501                                     0, SectSize,
502                                     InstrAnalysis.get(),
503                                     SectAddress, DebugOut,
504                                     FunctionMap, Functions);
505      }
506      for (std::map<uint64_t, MCFunction*>::iterator mi = FunctionMap.begin(),
507           me = FunctionMap.end(); mi != me; ++mi)
508        if (mi->second == 0) {
509          // Create functions for the remaining callees we have gathered,
510          // but we didn't find a name for them.
511          uint64_t SectSize = 0;
512          Sections[SectIdx].getSize(SectSize);
513
514          SmallVector<uint64_t, 16> Calls;
515          MCFunction f =
516            MCFunction::createFunctionFromMC("unknown", DisAsm.get(),
517                                             memoryObject, mi->first,
518                                             SectSize,
519                                             InstrAnalysis.get(), DebugOut,
520                                             Calls);
521          Functions.push_back(f);
522          mi->second = &Functions.back();
523          for (unsigned i = 0, e = Calls.size(); i != e; ++i) {
524            std::pair<uint64_t, MCFunction*> p(Calls[i], (MCFunction*)0);
525            if (FunctionMap.insert(p).second)
526              mi = FunctionMap.begin();
527          }
528        }
529
530      DenseSet<uint64_t> PrintedBlocks;
531      for (unsigned ffi = 0, ffe = Functions.size(); ffi != ffe; ++ffi) {
532        MCFunction &f = Functions[ffi];
533        for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){
534          if (!PrintedBlocks.insert(fi->first).second)
535            continue; // We already printed this block.
536
537          // We assume a block has predecessors when it's the first block after
538          // a symbol.
539          bool hasPreds = FunctionMap.find(fi->first) != FunctionMap.end();
540
541          // See if this block has predecessors.
542          // FIXME: Slow.
543          for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
544              ++pi)
545            if (pi->second.contains(fi->first)) {
546              hasPreds = true;
547              break;
548            }
549
550          uint64_t SectSize = 0, SectAddress;
551          Sections[SectIdx].getSize(SectSize);
552          Sections[SectIdx].getAddress(SectAddress);
553
554          // No predecessors, this is a data block. Print as .byte directives.
555          if (!hasPreds) {
556            uint64_t End = llvm::next(fi) == fe ? SectSize :
557                                                  llvm::next(fi)->first;
558            outs() << "# " << End-fi->first << " bytes of data:\n";
559            for (unsigned pos = fi->first; pos != End; ++pos) {
560              outs() << format("%8x:\t", SectAddress + pos);
561              DumpBytes(StringRef(Bytes.data() + pos, 1));
562              outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]);
563            }
564            continue;
565          }
566
567          if (fi->second.contains(fi->first)) // Print a header for simple loops
568            outs() << "# Loop begin:\n";
569
570          DILineInfo lastLine;
571          // Walk over the instructions and print them.
572          for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie;
573               ++ii) {
574            const MCDecodedInst &Inst = fi->second.getInsts()[ii];
575
576            // If there's a symbol at this address, print its name.
577            if (FunctionMap.find(SectAddress + Inst.Address) !=
578                FunctionMap.end())
579              outs() << FunctionMap[SectAddress + Inst.Address]-> getName()
580                     << ":\n";
581
582            outs() << format("%8" PRIx64 ":\t", SectAddress + Inst.Address);
583            DumpBytes(StringRef(Bytes.data() + Inst.Address, Inst.Size));
584
585            if (fi->second.contains(fi->first)) // Indent simple loops.
586              outs() << '\t';
587
588            IP->printInst(&Inst.Inst, outs(), "");
589
590            // Look for relocations inside this instructions, if there is one
591            // print its target and additional information if available.
592            for (unsigned j = 0; j != Relocs.size(); ++j)
593              if (Relocs[j].first >= SectAddress + Inst.Address &&
594                  Relocs[j].first < SectAddress + Inst.Address + Inst.Size) {
595                StringRef SymName;
596                uint64_t Addr;
597                Relocs[j].second.getAddress(Addr);
598                Relocs[j].second.getName(SymName);
599
600                outs() << "\t# " << SymName << ' ';
601                DumpAddress(Addr, Sections, MachOObj, outs());
602              }
603
604            // If this instructions contains an address, see if we can evaluate
605            // it and print additional information.
606            uint64_t targ = InstrAnalysis->evaluateBranch(Inst.Inst,
607                                                          Inst.Address,
608                                                          Inst.Size);
609            if (targ != -1ULL)
610              DumpAddress(targ, Sections, MachOObj, outs());
611
612            // Print debug info.
613            if (diContext) {
614              DILineInfo dli =
615                diContext->getLineInfoForAddress(SectAddress + Inst.Address);
616              // Print valid line info if it changed.
617              if (dli != lastLine && dli.getLine() != 0)
618                outs() << "\t## " << dli.getFileName() << ':'
619                       << dli.getLine() << ':' << dli.getColumn();
620              lastLine = dli;
621            }
622
623            outs() << '\n';
624          }
625        }
626
627        emitDOTFile((f.getName().str() + ".dot").c_str(), f, IP.get());
628      }
629    }
630  }
631}
632