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
GetTarget(const MachOObject * MachOObj)55 static const Target *GetTarget(const MachOObject *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 {
operator ()SymbolSorter91 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.
DumpAddress(uint64_t Address,ArrayRef<SectionRef> Sections,MachOObject * MachOObj,raw_ostream & OS)110 static void DumpAddress(uint64_t Address, ArrayRef<SectionRef> Sections,
111 MachOObject *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;
createMCFunctionAndSaveCalls(StringRef Name,const MCDisassembler * DisAsm,MemoryObject & Object,uint64_t Start,uint64_t End,MCInstrAnalysis * InstrAnalysis,uint64_t Address,raw_ostream & DebugOut,FunctionMapTy & FunctionMap,FunctionListTy & Functions)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.
emitDOTFile(const char * FileName,const MCFunction & f,MCInstPrinter * IP)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
getSectionsAndSymbols(const macho::Header & Header,MachOObjectFile * MachOObj,InMemoryStruct<macho::SymtabLoadCommand> * SymtabLC,std::vector<SectionRef> & Sections,std::vector<SymbolRef> & Symbols,SmallVectorImpl<uint64_t> & FoundFns)202 static void getSectionsAndSymbols(const macho::Header &Header,
203 MachOObjectFile *MachOObj,
204 InMemoryStruct<macho::SymtabLoadCommand> *SymtabLC,
205 std::vector<SectionRef> &Sections,
206 std::vector<SymbolRef> &Symbols,
207 SmallVectorImpl<uint64_t> &FoundFns) {
208 error_code ec;
209 for (symbol_iterator SI = MachOObj->begin_symbols(),
210 SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec))
211 Symbols.push_back(*SI);
212
213 for (section_iterator SI = MachOObj->begin_sections(),
214 SE = MachOObj->end_sections(); SI != SE; SI.increment(ec)) {
215 SectionRef SR = *SI;
216 StringRef SectName;
217 SR.getName(SectName);
218 Sections.push_back(*SI);
219 }
220
221 for (unsigned i = 0; i != Header.NumLoadCommands; ++i) {
222 const MachOObject::LoadCommandInfo &LCI =
223 MachOObj->getObject()->getLoadCommandInfo(i);
224 if (LCI.Command.Type == macho::LCT_FunctionStarts) {
225 // We found a function starts segment, parse the addresses for later
226 // consumption.
227 InMemoryStruct<macho::LinkeditDataLoadCommand> LLC;
228 MachOObj->getObject()->ReadLinkeditDataLoadCommand(LCI, LLC);
229
230 MachOObj->getObject()->ReadULEB128s(LLC->DataOffset, FoundFns);
231 }
232 }
233 }
234
DisassembleInputMachO(StringRef Filename)235 void llvm::DisassembleInputMachO(StringRef Filename) {
236 OwningPtr<MemoryBuffer> Buff;
237
238 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
239 errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n";
240 return;
241 }
242
243 OwningPtr<MachOObjectFile> MachOOF(static_cast<MachOObjectFile*>(
244 ObjectFile::createMachOObjectFile(Buff.take())));
245 MachOObject *MachOObj = MachOOF->getObject();
246
247 const Target *TheTarget = GetTarget(MachOObj);
248 if (!TheTarget) {
249 // GetTarget prints out stuff.
250 return;
251 }
252 OwningPtr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo());
253 OwningPtr<MCInstrAnalysis>
254 InstrAnalysis(TheTarget->createMCInstrAnalysis(InstrInfo.get()));
255
256 // Set up disassembler.
257 OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName));
258 OwningPtr<const MCSubtargetInfo>
259 STI(TheTarget->createMCSubtargetInfo(TripleName, "", ""));
260 OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
261 OwningPtr<const MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
262 int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
263 OwningPtr<MCInstPrinter>
264 IP(TheTarget->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *InstrInfo,
265 *MRI, *STI));
266
267 if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
268 errs() << "error: couldn't initialize disassembler for target "
269 << TripleName << '\n';
270 return;
271 }
272
273 outs() << '\n' << Filename << ":\n\n";
274
275 const macho::Header &Header = MachOObj->getHeader();
276
277 const MachOObject::LoadCommandInfo *SymtabLCI = 0;
278 // First, find the symbol table segment.
279 for (unsigned i = 0; i != Header.NumLoadCommands; ++i) {
280 const MachOObject::LoadCommandInfo &LCI = MachOObj->getLoadCommandInfo(i);
281 if (LCI.Command.Type == macho::LCT_Symtab) {
282 SymtabLCI = &LCI;
283 break;
284 }
285 }
286
287 // Read and register the symbol table data.
288 InMemoryStruct<macho::SymtabLoadCommand> SymtabLC;
289 if (SymtabLCI) {
290 MachOObj->ReadSymtabLoadCommand(*SymtabLCI, SymtabLC);
291 MachOObj->RegisterStringTable(*SymtabLC);
292 }
293
294 std::vector<SectionRef> Sections;
295 std::vector<SymbolRef> Symbols;
296 SmallVector<uint64_t, 8> FoundFns;
297
298 getSectionsAndSymbols(Header, MachOOF.get(), &SymtabLC, Sections, Symbols,
299 FoundFns);
300
301 // Make a copy of the unsorted symbol list. FIXME: duplication
302 std::vector<SymbolRef> UnsortedSymbols(Symbols);
303 // Sort the symbols by address, just in case they didn't come in that way.
304 std::sort(Symbols.begin(), Symbols.end(), SymbolSorter());
305
306 #ifndef NDEBUG
307 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
308 #else
309 raw_ostream &DebugOut = nulls();
310 #endif
311
312 OwningPtr<DIContext> diContext;
313 ObjectFile *DbgObj = MachOOF.get();
314 // Try to find debug info and set up the DIContext for it.
315 if (UseDbg) {
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 DbgObj = ObjectFile::createMachOObjectFile(Buf.take());
325 }
326
327 // Setup the DIContext
328 diContext.reset(DIContext::getDWARFContext(DbgObj));
329 }
330
331 FunctionMapTy FunctionMap;
332 FunctionListTy Functions;
333
334 for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
335 StringRef SectName;
336 if (Sections[SectIdx].getName(SectName) ||
337 SectName != "__text")
338 continue; // Skip non-text sections
339
340 StringRef SegmentName;
341 DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl();
342 if (MachOOF->getSectionFinalSegmentName(DR, SegmentName) ||
343 SegmentName != "__TEXT")
344 continue;
345
346 // Insert the functions from the function starts segment into our map.
347 uint64_t VMAddr;
348 Sections[SectIdx].getAddress(VMAddr);
349 for (unsigned i = 0, e = FoundFns.size(); i != e; ++i) {
350 StringRef SectBegin;
351 Sections[SectIdx].getContents(SectBegin);
352 uint64_t Offset = (uint64_t)SectBegin.data();
353 FunctionMap.insert(std::make_pair(VMAddr + FoundFns[i]-Offset,
354 (MCFunction*)0));
355 }
356
357 StringRef Bytes;
358 Sections[SectIdx].getContents(Bytes);
359 StringRefMemoryObject memoryObject(Bytes);
360 bool symbolTableWorked = false;
361
362 // Parse relocations.
363 std::vector<std::pair<uint64_t, SymbolRef> > Relocs;
364 error_code ec;
365 for (relocation_iterator RI = Sections[SectIdx].begin_relocations(),
366 RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) {
367 uint64_t RelocOffset, SectionAddress;
368 RI->getAddress(RelocOffset);
369 Sections[SectIdx].getAddress(SectionAddress);
370 RelocOffset -= SectionAddress;
371
372 SymbolRef RelocSym;
373 RI->getSymbol(RelocSym);
374
375 Relocs.push_back(std::make_pair(RelocOffset, RelocSym));
376 }
377 array_pod_sort(Relocs.begin(), Relocs.end());
378
379 // Disassemble symbol by symbol.
380 for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
381 StringRef SymName;
382 Symbols[SymIdx].getName(SymName);
383
384 SymbolRef::Type ST;
385 Symbols[SymIdx].getType(ST);
386 if (ST != SymbolRef::ST_Function)
387 continue;
388
389 // Make sure the symbol is defined in this section.
390 bool containsSym = false;
391 Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym);
392 if (!containsSym)
393 continue;
394
395 // Start at the address of the symbol relative to the section's address.
396 uint64_t SectionAddress = 0;
397 uint64_t Start = 0;
398 Sections[SectIdx].getAddress(SectionAddress);
399 Symbols[SymIdx].getAddress(Start);
400 Start -= SectionAddress;
401
402 // Stop disassembling either at the beginning of the next symbol or at
403 // the end of the section.
404 bool containsNextSym = false;
405 uint64_t NextSym = 0;
406 uint64_t NextSymIdx = SymIdx+1;
407 while (Symbols.size() > NextSymIdx) {
408 SymbolRef::Type NextSymType;
409 Symbols[NextSymIdx].getType(NextSymType);
410 if (NextSymType == SymbolRef::ST_Function) {
411 Sections[SectIdx].containsSymbol(Symbols[NextSymIdx],
412 containsNextSym);
413 Symbols[NextSymIdx].getAddress(NextSym);
414 NextSym -= SectionAddress;
415 break;
416 }
417 ++NextSymIdx;
418 }
419
420 uint64_t SectSize;
421 Sections[SectIdx].getSize(SectSize);
422 uint64_t End = containsNextSym ? NextSym : SectSize;
423 uint64_t Size;
424
425 symbolTableWorked = true;
426
427 if (!CFG) {
428 // Normal disassembly, print addresses, bytes and mnemonic form.
429 StringRef SymName;
430 Symbols[SymIdx].getName(SymName);
431
432 outs() << SymName << ":\n";
433 DILineInfo lastLine;
434 for (uint64_t Index = Start; Index < End; Index += Size) {
435 MCInst Inst;
436
437 if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
438 DebugOut, nulls())) {
439 uint64_t SectAddress = 0;
440 Sections[SectIdx].getAddress(SectAddress);
441 outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
442
443 DumpBytes(StringRef(Bytes.data() + Index, Size));
444 IP->printInst(&Inst, outs(), "");
445
446 // Print debug info.
447 if (diContext) {
448 DILineInfo dli =
449 diContext->getLineInfoForAddress(SectAddress + Index);
450 // Print valid line info if it changed.
451 if (dli != lastLine && dli.getLine() != 0)
452 outs() << "\t## " << dli.getFileName() << ':'
453 << dli.getLine() << ':' << dli.getColumn();
454 lastLine = dli;
455 }
456 outs() << "\n";
457 } else {
458 errs() << "llvm-objdump: warning: invalid instruction encoding\n";
459 if (Size == 0)
460 Size = 1; // skip illegible bytes
461 }
462 }
463 } else {
464 // Create CFG and use it for disassembly.
465 StringRef SymName;
466 Symbols[SymIdx].getName(SymName);
467 createMCFunctionAndSaveCalls(
468 SymName, DisAsm.get(), memoryObject, Start, End,
469 InstrAnalysis.get(), Start, DebugOut, FunctionMap, Functions);
470 }
471 }
472 if (!CFG && !symbolTableWorked) {
473 // Reading the symbol table didn't work, disassemble the whole section.
474 uint64_t SectAddress;
475 Sections[SectIdx].getAddress(SectAddress);
476 uint64_t SectSize;
477 Sections[SectIdx].getSize(SectSize);
478 uint64_t InstSize;
479 for (uint64_t Index = 0; Index < SectSize; Index += InstSize) {
480 MCInst Inst;
481
482 if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index,
483 DebugOut, nulls())) {
484 outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
485 DumpBytes(StringRef(Bytes.data() + Index, InstSize));
486 IP->printInst(&Inst, outs(), "");
487 outs() << "\n";
488 } else {
489 errs() << "llvm-objdump: warning: invalid instruction encoding\n";
490 if (InstSize == 0)
491 InstSize = 1; // skip illegible bytes
492 }
493 }
494 }
495
496 if (CFG) {
497 if (!symbolTableWorked) {
498 // Reading the symbol table didn't work, create a big __TEXT symbol.
499 uint64_t SectSize = 0, SectAddress = 0;
500 Sections[SectIdx].getSize(SectSize);
501 Sections[SectIdx].getAddress(SectAddress);
502 createMCFunctionAndSaveCalls("__TEXT", DisAsm.get(), memoryObject,
503 0, SectSize,
504 InstrAnalysis.get(),
505 SectAddress, DebugOut,
506 FunctionMap, Functions);
507 }
508 for (std::map<uint64_t, MCFunction*>::iterator mi = FunctionMap.begin(),
509 me = FunctionMap.end(); mi != me; ++mi)
510 if (mi->second == 0) {
511 // Create functions for the remaining callees we have gathered,
512 // but we didn't find a name for them.
513 uint64_t SectSize = 0;
514 Sections[SectIdx].getSize(SectSize);
515
516 SmallVector<uint64_t, 16> Calls;
517 MCFunction f =
518 MCFunction::createFunctionFromMC("unknown", DisAsm.get(),
519 memoryObject, mi->first,
520 SectSize,
521 InstrAnalysis.get(), DebugOut,
522 Calls);
523 Functions.push_back(f);
524 mi->second = &Functions.back();
525 for (unsigned i = 0, e = Calls.size(); i != e; ++i) {
526 std::pair<uint64_t, MCFunction*> p(Calls[i], (MCFunction*)0);
527 if (FunctionMap.insert(p).second)
528 mi = FunctionMap.begin();
529 }
530 }
531
532 DenseSet<uint64_t> PrintedBlocks;
533 for (unsigned ffi = 0, ffe = Functions.size(); ffi != ffe; ++ffi) {
534 MCFunction &f = Functions[ffi];
535 for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){
536 if (!PrintedBlocks.insert(fi->first).second)
537 continue; // We already printed this block.
538
539 // We assume a block has predecessors when it's the first block after
540 // a symbol.
541 bool hasPreds = FunctionMap.find(fi->first) != FunctionMap.end();
542
543 // See if this block has predecessors.
544 // FIXME: Slow.
545 for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
546 ++pi)
547 if (pi->second.contains(fi->first)) {
548 hasPreds = true;
549 break;
550 }
551
552 uint64_t SectSize = 0, SectAddress;
553 Sections[SectIdx].getSize(SectSize);
554 Sections[SectIdx].getAddress(SectAddress);
555
556 // No predecessors, this is a data block. Print as .byte directives.
557 if (!hasPreds) {
558 uint64_t End = llvm::next(fi) == fe ? SectSize :
559 llvm::next(fi)->first;
560 outs() << "# " << End-fi->first << " bytes of data:\n";
561 for (unsigned pos = fi->first; pos != End; ++pos) {
562 outs() << format("%8x:\t", SectAddress + pos);
563 DumpBytes(StringRef(Bytes.data() + pos, 1));
564 outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]);
565 }
566 continue;
567 }
568
569 if (fi->second.contains(fi->first)) // Print a header for simple loops
570 outs() << "# Loop begin:\n";
571
572 DILineInfo lastLine;
573 // Walk over the instructions and print them.
574 for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie;
575 ++ii) {
576 const MCDecodedInst &Inst = fi->second.getInsts()[ii];
577
578 // If there's a symbol at this address, print its name.
579 if (FunctionMap.find(SectAddress + Inst.Address) !=
580 FunctionMap.end())
581 outs() << FunctionMap[SectAddress + Inst.Address]-> getName()
582 << ":\n";
583
584 outs() << format("%8" PRIx64 ":\t", SectAddress + Inst.Address);
585 DumpBytes(StringRef(Bytes.data() + Inst.Address, Inst.Size));
586
587 if (fi->second.contains(fi->first)) // Indent simple loops.
588 outs() << '\t';
589
590 IP->printInst(&Inst.Inst, outs(), "");
591
592 // Look for relocations inside this instructions, if there is one
593 // print its target and additional information if available.
594 for (unsigned j = 0; j != Relocs.size(); ++j)
595 if (Relocs[j].first >= SectAddress + Inst.Address &&
596 Relocs[j].first < SectAddress + Inst.Address + Inst.Size) {
597 StringRef SymName;
598 uint64_t Addr;
599 Relocs[j].second.getAddress(Addr);
600 Relocs[j].second.getName(SymName);
601
602 outs() << "\t# " << SymName << ' ';
603 DumpAddress(Addr, Sections, MachOObj, outs());
604 }
605
606 // If this instructions contains an address, see if we can evaluate
607 // it and print additional information.
608 uint64_t targ = InstrAnalysis->evaluateBranch(Inst.Inst,
609 Inst.Address,
610 Inst.Size);
611 if (targ != -1ULL)
612 DumpAddress(targ, Sections, MachOObj, outs());
613
614 // Print debug info.
615 if (diContext) {
616 DILineInfo dli =
617 diContext->getLineInfoForAddress(SectAddress + Inst.Address);
618 // Print valid line info if it changed.
619 if (dli != lastLine && dli.getLine() != 0)
620 outs() << "\t## " << dli.getFileName() << ':'
621 << dli.getLine() << ':' << dli.getColumn();
622 lastLine = dli;
623 }
624
625 outs() << '\n';
626 }
627 }
628
629 emitDOTFile((f.getName().str() + ".dot").c_str(), f, IP.get());
630 }
631 }
632 }
633 }
634