MachODump.cpp revision a2561a0153237291980722383f409a6499b12efc
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> 42using namespace llvm; 43using namespace object; 44 45static 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 49static cl::opt<bool> 50 UseDbg("g", cl::desc("Print line information from debug info if available")); 51 52static cl::opt<std::string> 53 DSYMFile("dsym", cl::desc("Use .dSYM file for debug info")); 54 55static const Target *GetTarget(const MachOObjectFileBase *MachOObj) { 56 // Figure out the target triple. 57 if (TripleName.empty()) { 58 llvm::Triple TT("unknown-unknown-unknown"); 59 switch (MachOObj->getHeader()->CPUType) { 60 case llvm::MachO::CPUTypeI386: 61 TT.setArch(Triple::ArchType(Triple::x86)); 62 break; 63 case llvm::MachO::CPUTypeX86_64: 64 TT.setArch(Triple::ArchType(Triple::x86_64)); 65 break; 66 case llvm::MachO::CPUTypeARM: 67 TT.setArch(Triple::ArchType(Triple::arm)); 68 break; 69 case llvm::MachO::CPUTypePowerPC: 70 TT.setArch(Triple::ArchType(Triple::ppc)); 71 break; 72 case llvm::MachO::CPUTypePowerPC64: 73 TT.setArch(Triple::ArchType(Triple::ppc64)); 74 break; 75 } 76 TripleName = TT.str(); 77 } 78 79 // Get the target specific parser. 80 std::string Error; 81 const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error); 82 if (TheTarget) 83 return TheTarget; 84 85 errs() << "llvm-objdump: error: unable to get target for '" << TripleName 86 << "', see --version and --triple.\n"; 87 return 0; 88} 89 90struct SymbolSorter { 91 bool operator()(const SymbolRef &A, const SymbolRef &B) { 92 SymbolRef::Type AType, BType; 93 A.getType(AType); 94 B.getType(BType); 95 96 uint64_t AAddr, BAddr; 97 if (AType != SymbolRef::ST_Function) 98 AAddr = 0; 99 else 100 A.getAddress(AAddr); 101 if (BType != SymbolRef::ST_Function) 102 BAddr = 0; 103 else 104 B.getAddress(BAddr); 105 return AAddr < BAddr; 106 } 107}; 108 109// Print additional information about an address, if available. 110static void DumpAddress(uint64_t Address, ArrayRef<SectionRef> Sections, 111 const MachOObjectFileBase *MachOObj, raw_ostream &OS) { 112 for (unsigned i = 0; i != Sections.size(); ++i) { 113 uint64_t SectAddr = 0, SectSize = 0; 114 Sections[i].getAddress(SectAddr); 115 Sections[i].getSize(SectSize); 116 uint64_t addr = SectAddr; 117 if (SectAddr <= Address && 118 SectAddr + SectSize > Address) { 119 StringRef bytes, name; 120 Sections[i].getContents(bytes); 121 Sections[i].getName(name); 122 // Print constant strings. 123 if (!name.compare("__cstring")) 124 OS << '"' << bytes.substr(addr, bytes.find('\0', addr)) << '"'; 125 // Print constant CFStrings. 126 if (!name.compare("__cfstring")) 127 OS << "@\"" << bytes.substr(addr, bytes.find('\0', addr)) << '"'; 128 } 129 } 130} 131 132typedef std::map<uint64_t, MCFunction*> FunctionMapTy; 133typedef SmallVector<MCFunction, 16> FunctionListTy; 134static 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. 156static 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 202static void getSectionsAndSymbols(const MachOObjectFileBase::Header *Header, 203 MachOObjectFileBase *MachOObj, 204 std::vector<SectionRef> &Sections, 205 std::vector<SymbolRef> &Symbols, 206 SmallVectorImpl<uint64_t> &FoundFns) { 207 error_code ec; 208 for (symbol_iterator SI = MachOObj->begin_symbols(), 209 SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec)) 210 Symbols.push_back(*SI); 211 212 for (section_iterator SI = MachOObj->begin_sections(), 213 SE = MachOObj->end_sections(); SI != SE; SI.increment(ec)) { 214 SectionRef SR = *SI; 215 StringRef SectName; 216 SR.getName(SectName); 217 Sections.push_back(*SI); 218 } 219 220 for (unsigned i = 0; i != Header->NumLoadCommands; ++i) { 221 const MachOObjectFileBase::LoadCommand *Command = 222 MachOObj->getLoadCommandInfo(i); 223 if (Command->Type == macho::LCT_FunctionStarts) { 224 // We found a function starts segment, parse the addresses for later 225 // consumption. 226 const MachOObjectFileBase::LinkeditDataLoadCommand *LLC = 227 reinterpret_cast<const MachOObjectFileBase::LinkeditDataLoadCommand*>(Command); 228 229 MachOObj->ReadULEB128s(LLC->DataOffset, FoundFns); 230 } 231 } 232} 233 234void llvm::DisassembleInputMachO(StringRef Filename) { 235 OwningPtr<MemoryBuffer> Buff; 236 237 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) { 238 errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n"; 239 return; 240 } 241 242 OwningPtr<MachOObjectFileBase> MachOOF(static_cast<MachOObjectFileBase*>( 243 ObjectFile::createMachOObjectFile(Buff.take()))); 244 245 const Target *TheTarget = GetTarget(MachOOF.get()); 246 if (!TheTarget) { 247 // GetTarget prints out stuff. 248 return; 249 } 250 OwningPtr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo()); 251 OwningPtr<MCInstrAnalysis> 252 InstrAnalysis(TheTarget->createMCInstrAnalysis(InstrInfo.get())); 253 254 // Set up disassembler. 255 OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName)); 256 OwningPtr<const MCSubtargetInfo> 257 STI(TheTarget->createMCSubtargetInfo(TripleName, "", "")); 258 OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI)); 259 OwningPtr<const MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName)); 260 int AsmPrinterVariant = AsmInfo->getAssemblerDialect(); 261 OwningPtr<MCInstPrinter> 262 IP(TheTarget->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *InstrInfo, 263 *MRI, *STI)); 264 265 if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) { 266 errs() << "error: couldn't initialize disassembler for target " 267 << TripleName << '\n'; 268 return; 269 } 270 271 outs() << '\n' << Filename << ":\n\n"; 272 273 const MachOObjectFileBase::Header *Header = MachOOF->getHeader(); 274 275 std::vector<SectionRef> Sections; 276 std::vector<SymbolRef> Symbols; 277 SmallVector<uint64_t, 8> FoundFns; 278 279 getSectionsAndSymbols(Header, MachOOF.get(), Sections, Symbols, FoundFns); 280 281 // Make a copy of the unsorted symbol list. FIXME: duplication 282 std::vector<SymbolRef> UnsortedSymbols(Symbols); 283 // Sort the symbols by address, just in case they didn't come in that way. 284 std::sort(Symbols.begin(), Symbols.end(), SymbolSorter()); 285 286#ifndef NDEBUG 287 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls(); 288#else 289 raw_ostream &DebugOut = nulls(); 290#endif 291 292 OwningPtr<DIContext> diContext; 293 ObjectFile *DbgObj = MachOOF.get(); 294 // Try to find debug info and set up the DIContext for it. 295 if (UseDbg) { 296 // A separate DSym file path was specified, parse it as a macho file, 297 // get the sections and supply it to the section name parsing machinery. 298 if (!DSYMFile.empty()) { 299 OwningPtr<MemoryBuffer> Buf; 300 if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile.c_str(), Buf)) { 301 errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n'; 302 return; 303 } 304 DbgObj = ObjectFile::createMachOObjectFile(Buf.take()); 305 } 306 307 // Setup the DIContext 308 diContext.reset(DIContext::getDWARFContext(DbgObj)); 309 } 310 311 FunctionMapTy FunctionMap; 312 FunctionListTy Functions; 313 314 for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) { 315 StringRef SectName; 316 if (Sections[SectIdx].getName(SectName) || 317 SectName != "__text") 318 continue; // Skip non-text sections 319 320 DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl(); 321 StringRef SegmentName = MachOOF->getSectionFinalSegmentName(DR); 322 if (SegmentName != "__TEXT") 323 continue; 324 325 // Insert the functions from the function starts segment into our map. 326 uint64_t VMAddr; 327 Sections[SectIdx].getAddress(VMAddr); 328 for (unsigned i = 0, e = FoundFns.size(); i != e; ++i) { 329 StringRef SectBegin; 330 Sections[SectIdx].getContents(SectBegin); 331 uint64_t Offset = (uint64_t)SectBegin.data(); 332 FunctionMap.insert(std::make_pair(VMAddr + FoundFns[i]-Offset, 333 (MCFunction*)0)); 334 } 335 336 StringRef Bytes; 337 Sections[SectIdx].getContents(Bytes); 338 StringRefMemoryObject memoryObject(Bytes); 339 bool symbolTableWorked = false; 340 341 // Parse relocations. 342 std::vector<std::pair<uint64_t, SymbolRef> > Relocs; 343 error_code ec; 344 for (relocation_iterator RI = Sections[SectIdx].begin_relocations(), 345 RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) { 346 uint64_t RelocOffset, SectionAddress; 347 RI->getAddress(RelocOffset); 348 Sections[SectIdx].getAddress(SectionAddress); 349 RelocOffset -= SectionAddress; 350 351 SymbolRef RelocSym; 352 RI->getSymbol(RelocSym); 353 354 Relocs.push_back(std::make_pair(RelocOffset, RelocSym)); 355 } 356 array_pod_sort(Relocs.begin(), Relocs.end()); 357 358 // Disassemble symbol by symbol. 359 for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) { 360 StringRef SymName; 361 Symbols[SymIdx].getName(SymName); 362 363 SymbolRef::Type ST; 364 Symbols[SymIdx].getType(ST); 365 if (ST != SymbolRef::ST_Function) 366 continue; 367 368 // Make sure the symbol is defined in this section. 369 bool containsSym = false; 370 Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym); 371 if (!containsSym) 372 continue; 373 374 // Start at the address of the symbol relative to the section's address. 375 uint64_t SectionAddress = 0; 376 uint64_t Start = 0; 377 Sections[SectIdx].getAddress(SectionAddress); 378 Symbols[SymIdx].getAddress(Start); 379 Start -= SectionAddress; 380 381 // Stop disassembling either at the beginning of the next symbol or at 382 // the end of the section. 383 bool containsNextSym = false; 384 uint64_t NextSym = 0; 385 uint64_t NextSymIdx = SymIdx+1; 386 while (Symbols.size() > NextSymIdx) { 387 SymbolRef::Type NextSymType; 388 Symbols[NextSymIdx].getType(NextSymType); 389 if (NextSymType == SymbolRef::ST_Function) { 390 Sections[SectIdx].containsSymbol(Symbols[NextSymIdx], 391 containsNextSym); 392 Symbols[NextSymIdx].getAddress(NextSym); 393 NextSym -= SectionAddress; 394 break; 395 } 396 ++NextSymIdx; 397 } 398 399 uint64_t SectSize; 400 Sections[SectIdx].getSize(SectSize); 401 uint64_t End = containsNextSym ? NextSym : SectSize; 402 uint64_t Size; 403 404 symbolTableWorked = true; 405 406 if (!CFG) { 407 // Normal disassembly, print addresses, bytes and mnemonic form. 408 StringRef SymName; 409 Symbols[SymIdx].getName(SymName); 410 411 outs() << SymName << ":\n"; 412 DILineInfo lastLine; 413 for (uint64_t Index = Start; Index < End; Index += Size) { 414 MCInst Inst; 415 416 if (DisAsm->getInstruction(Inst, Size, memoryObject, Index, 417 DebugOut, nulls())) { 418 uint64_t SectAddress = 0; 419 Sections[SectIdx].getAddress(SectAddress); 420 outs() << format("%8" PRIx64 ":\t", SectAddress + Index); 421 422 DumpBytes(StringRef(Bytes.data() + Index, Size)); 423 IP->printInst(&Inst, outs(), ""); 424 425 // Print debug info. 426 if (diContext) { 427 DILineInfo dli = 428 diContext->getLineInfoForAddress(SectAddress + Index); 429 // Print valid line info if it changed. 430 if (dli != lastLine && dli.getLine() != 0) 431 outs() << "\t## " << dli.getFileName() << ':' 432 << dli.getLine() << ':' << dli.getColumn(); 433 lastLine = dli; 434 } 435 outs() << "\n"; 436 } else { 437 errs() << "llvm-objdump: warning: invalid instruction encoding\n"; 438 if (Size == 0) 439 Size = 1; // skip illegible bytes 440 } 441 } 442 } else { 443 // Create CFG and use it for disassembly. 444 StringRef SymName; 445 Symbols[SymIdx].getName(SymName); 446 createMCFunctionAndSaveCalls( 447 SymName, DisAsm.get(), memoryObject, Start, End, 448 InstrAnalysis.get(), Start, DebugOut, FunctionMap, Functions); 449 } 450 } 451 if (!CFG && !symbolTableWorked) { 452 // Reading the symbol table didn't work, disassemble the whole section. 453 uint64_t SectAddress; 454 Sections[SectIdx].getAddress(SectAddress); 455 uint64_t SectSize; 456 Sections[SectIdx].getSize(SectSize); 457 uint64_t InstSize; 458 for (uint64_t Index = 0; Index < SectSize; Index += InstSize) { 459 MCInst Inst; 460 461 if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index, 462 DebugOut, nulls())) { 463 outs() << format("%8" PRIx64 ":\t", SectAddress + Index); 464 DumpBytes(StringRef(Bytes.data() + Index, InstSize)); 465 IP->printInst(&Inst, outs(), ""); 466 outs() << "\n"; 467 } else { 468 errs() << "llvm-objdump: warning: invalid instruction encoding\n"; 469 if (InstSize == 0) 470 InstSize = 1; // skip illegible bytes 471 } 472 } 473 } 474 475 if (CFG) { 476 if (!symbolTableWorked) { 477 // Reading the symbol table didn't work, create a big __TEXT symbol. 478 uint64_t SectSize = 0, SectAddress = 0; 479 Sections[SectIdx].getSize(SectSize); 480 Sections[SectIdx].getAddress(SectAddress); 481 createMCFunctionAndSaveCalls("__TEXT", DisAsm.get(), memoryObject, 482 0, SectSize, 483 InstrAnalysis.get(), 484 SectAddress, DebugOut, 485 FunctionMap, Functions); 486 } 487 for (std::map<uint64_t, MCFunction*>::iterator mi = FunctionMap.begin(), 488 me = FunctionMap.end(); mi != me; ++mi) 489 if (mi->second == 0) { 490 // Create functions for the remaining callees we have gathered, 491 // but we didn't find a name for them. 492 uint64_t SectSize = 0; 493 Sections[SectIdx].getSize(SectSize); 494 495 SmallVector<uint64_t, 16> Calls; 496 MCFunction f = 497 MCFunction::createFunctionFromMC("unknown", DisAsm.get(), 498 memoryObject, mi->first, 499 SectSize, 500 InstrAnalysis.get(), DebugOut, 501 Calls); 502 Functions.push_back(f); 503 mi->second = &Functions.back(); 504 for (unsigned i = 0, e = Calls.size(); i != e; ++i) { 505 std::pair<uint64_t, MCFunction*> p(Calls[i], (MCFunction*)0); 506 if (FunctionMap.insert(p).second) 507 mi = FunctionMap.begin(); 508 } 509 } 510 511 DenseSet<uint64_t> PrintedBlocks; 512 for (unsigned ffi = 0, ffe = Functions.size(); ffi != ffe; ++ffi) { 513 MCFunction &f = Functions[ffi]; 514 for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){ 515 if (!PrintedBlocks.insert(fi->first).second) 516 continue; // We already printed this block. 517 518 // We assume a block has predecessors when it's the first block after 519 // a symbol. 520 bool hasPreds = FunctionMap.find(fi->first) != FunctionMap.end(); 521 522 // See if this block has predecessors. 523 // FIXME: Slow. 524 for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe; 525 ++pi) 526 if (pi->second.contains(fi->first)) { 527 hasPreds = true; 528 break; 529 } 530 531 uint64_t SectSize = 0, SectAddress; 532 Sections[SectIdx].getSize(SectSize); 533 Sections[SectIdx].getAddress(SectAddress); 534 535 // No predecessors, this is a data block. Print as .byte directives. 536 if (!hasPreds) { 537 uint64_t End = llvm::next(fi) == fe ? SectSize : 538 llvm::next(fi)->first; 539 outs() << "# " << End-fi->first << " bytes of data:\n"; 540 for (unsigned pos = fi->first; pos != End; ++pos) { 541 outs() << format("%8x:\t", SectAddress + pos); 542 DumpBytes(StringRef(Bytes.data() + pos, 1)); 543 outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]); 544 } 545 continue; 546 } 547 548 if (fi->second.contains(fi->first)) // Print a header for simple loops 549 outs() << "# Loop begin:\n"; 550 551 DILineInfo lastLine; 552 // Walk over the instructions and print them. 553 for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie; 554 ++ii) { 555 const MCDecodedInst &Inst = fi->second.getInsts()[ii]; 556 557 // If there's a symbol at this address, print its name. 558 if (FunctionMap.find(SectAddress + Inst.Address) != 559 FunctionMap.end()) 560 outs() << FunctionMap[SectAddress + Inst.Address]-> getName() 561 << ":\n"; 562 563 outs() << format("%8" PRIx64 ":\t", SectAddress + Inst.Address); 564 DumpBytes(StringRef(Bytes.data() + Inst.Address, Inst.Size)); 565 566 if (fi->second.contains(fi->first)) // Indent simple loops. 567 outs() << '\t'; 568 569 IP->printInst(&Inst.Inst, outs(), ""); 570 571 // Look for relocations inside this instructions, if there is one 572 // print its target and additional information if available. 573 for (unsigned j = 0; j != Relocs.size(); ++j) 574 if (Relocs[j].first >= SectAddress + Inst.Address && 575 Relocs[j].first < SectAddress + Inst.Address + Inst.Size) { 576 StringRef SymName; 577 uint64_t Addr; 578 Relocs[j].second.getAddress(Addr); 579 Relocs[j].second.getName(SymName); 580 581 outs() << "\t# " << SymName << ' '; 582 DumpAddress(Addr, Sections, MachOOF.get(), outs()); 583 } 584 585 // If this instructions contains an address, see if we can evaluate 586 // it and print additional information. 587 uint64_t targ = InstrAnalysis->evaluateBranch(Inst.Inst, 588 Inst.Address, 589 Inst.Size); 590 if (targ != -1ULL) 591 DumpAddress(targ, Sections, MachOOF.get(), outs()); 592 593 // Print debug info. 594 if (diContext) { 595 DILineInfo dli = 596 diContext->getLineInfoForAddress(SectAddress + Inst.Address); 597 // Print valid line info if it changed. 598 if (dli != lastLine && dli.getLine() != 0) 599 outs() << "\t## " << dli.getFileName() << ':' 600 << dli.getLine() << ':' << dli.getColumn(); 601 lastLine = dli; 602 } 603 604 outs() << '\n'; 605 } 606 } 607 608 emitDOTFile((f.getName().str() + ".dot").c_str(), f, IP.get()); 609 } 610 } 611 } 612} 613