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/MCRegisterInfo.h" 30#include "llvm/MC/MCSubtargetInfo.h" 31#include "llvm/Support/CommandLine.h" 32#include "llvm/Support/Debug.h" 33#include "llvm/Support/Format.h" 34#include "llvm/Support/GraphWriter.h" 35#include "llvm/Support/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 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 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 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 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 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 235void 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 StringRef DebugAbbrevSection, DebugInfoSection, DebugArangesSection, 313 DebugLineSection, DebugStrSection; 314 OwningPtr<DIContext> diContext; 315 OwningPtr<MachOObjectFile> DSYMObj; 316 MachOObject *DbgInfoObj = MachOObj; 317 // Try to find debug info and set up the DIContext for it. 318 if (UseDbg) { 319 ArrayRef<SectionRef> DebugSections = Sections; 320 std::vector<SectionRef> DSYMSections; 321 322 // A separate DSym file path was specified, parse it as a macho file, 323 // get the sections and supply it to the section name parsing machinery. 324 if (!DSYMFile.empty()) { 325 OwningPtr<MemoryBuffer> Buf; 326 if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile.c_str(), Buf)) { 327 errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n'; 328 return; 329 } 330 DSYMObj.reset(static_cast<MachOObjectFile*>( 331 ObjectFile::createMachOObjectFile(Buf.take()))); 332 const macho::Header &Header = DSYMObj->getObject()->getHeader(); 333 334 std::vector<SymbolRef> Symbols; 335 SmallVector<uint64_t, 8> FoundFns; 336 getSectionsAndSymbols(Header, DSYMObj.get(), 0, DSYMSections, Symbols, 337 FoundFns); 338 DebugSections = DSYMSections; 339 DbgInfoObj = DSYMObj.get()->getObject(); 340 } 341 342 // Find the named debug info sections. 343 for (unsigned SectIdx = 0; SectIdx != DebugSections.size(); SectIdx++) { 344 StringRef SectName; 345 if (!DebugSections[SectIdx].getName(SectName)) { 346 if (SectName.equals("__DWARF,__debug_abbrev")) 347 DebugSections[SectIdx].getContents(DebugAbbrevSection); 348 else if (SectName.equals("__DWARF,__debug_info")) 349 DebugSections[SectIdx].getContents(DebugInfoSection); 350 else if (SectName.equals("__DWARF,__debug_aranges")) 351 DebugSections[SectIdx].getContents(DebugArangesSection); 352 else if (SectName.equals("__DWARF,__debug_line")) 353 DebugSections[SectIdx].getContents(DebugLineSection); 354 else if (SectName.equals("__DWARF,__debug_str")) 355 DebugSections[SectIdx].getContents(DebugStrSection); 356 } 357 } 358 359 // Setup the DIContext. 360 diContext.reset(DIContext::getDWARFContext(DbgInfoObj->isLittleEndian(), 361 DebugInfoSection, 362 DebugAbbrevSection, 363 DebugArangesSection, 364 DebugLineSection, 365 DebugStrSection)); 366 } 367 368 FunctionMapTy FunctionMap; 369 FunctionListTy Functions; 370 371 for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) { 372 StringRef SectName; 373 if (Sections[SectIdx].getName(SectName) || 374 SectName.compare("__TEXT,__text")) 375 continue; // Skip non-text sections 376 377 // Insert the functions from the function starts segment into our map. 378 uint64_t VMAddr; 379 Sections[SectIdx].getAddress(VMAddr); 380 for (unsigned i = 0, e = FoundFns.size(); i != e; ++i) { 381 StringRef SectBegin; 382 Sections[SectIdx].getContents(SectBegin); 383 uint64_t Offset = (uint64_t)SectBegin.data(); 384 FunctionMap.insert(std::make_pair(VMAddr + FoundFns[i]-Offset, 385 (MCFunction*)0)); 386 } 387 388 StringRef Bytes; 389 Sections[SectIdx].getContents(Bytes); 390 StringRefMemoryObject memoryObject(Bytes); 391 bool symbolTableWorked = false; 392 393 // Parse relocations. 394 std::vector<std::pair<uint64_t, SymbolRef> > Relocs; 395 error_code ec; 396 for (relocation_iterator RI = Sections[SectIdx].begin_relocations(), 397 RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) { 398 uint64_t RelocOffset, SectionAddress; 399 RI->getAddress(RelocOffset); 400 Sections[SectIdx].getAddress(SectionAddress); 401 RelocOffset -= SectionAddress; 402 403 SymbolRef RelocSym; 404 RI->getSymbol(RelocSym); 405 406 Relocs.push_back(std::make_pair(RelocOffset, RelocSym)); 407 } 408 array_pod_sort(Relocs.begin(), Relocs.end()); 409 410 // Disassemble symbol by symbol. 411 for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) { 412 StringRef SymName; 413 Symbols[SymIdx].getName(SymName); 414 415 SymbolRef::Type ST; 416 Symbols[SymIdx].getType(ST); 417 if (ST != SymbolRef::ST_Function) 418 continue; 419 420 // Make sure the symbol is defined in this section. 421 bool containsSym = false; 422 Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym); 423 if (!containsSym) 424 continue; 425 426 // Start at the address of the symbol relative to the section's address. 427 uint64_t SectionAddress = 0; 428 uint64_t Start = 0; 429 Sections[SectIdx].getAddress(SectionAddress); 430 Symbols[SymIdx].getAddress(Start); 431 Start -= SectionAddress; 432 433 // Stop disassembling either at the beginning of the next symbol or at 434 // the end of the section. 435 bool containsNextSym = false; 436 uint64_t NextSym = 0; 437 uint64_t NextSymIdx = SymIdx+1; 438 while (Symbols.size() > NextSymIdx) { 439 SymbolRef::Type NextSymType; 440 Symbols[NextSymIdx].getType(NextSymType); 441 if (NextSymType == SymbolRef::ST_Function) { 442 Sections[SectIdx].containsSymbol(Symbols[NextSymIdx], 443 containsNextSym); 444 Symbols[NextSymIdx].getAddress(NextSym); 445 NextSym -= SectionAddress; 446 break; 447 } 448 ++NextSymIdx; 449 } 450 451 uint64_t SectSize; 452 Sections[SectIdx].getSize(SectSize); 453 uint64_t End = containsNextSym ? NextSym : SectSize; 454 uint64_t Size; 455 456 symbolTableWorked = true; 457 458 if (!CFG) { 459 // Normal disassembly, print addresses, bytes and mnemonic form. 460 StringRef SymName; 461 Symbols[SymIdx].getName(SymName); 462 463 outs() << SymName << ":\n"; 464 DILineInfo lastLine; 465 for (uint64_t Index = Start; Index < End; Index += Size) { 466 MCInst Inst; 467 468 if (DisAsm->getInstruction(Inst, Size, memoryObject, Index, 469 DebugOut, nulls())) { 470 uint64_t SectAddress = 0; 471 Sections[SectIdx].getAddress(SectAddress); 472 outs() << format("%8" PRIx64 ":\t", SectAddress + Index); 473 474 DumpBytes(StringRef(Bytes.data() + Index, Size)); 475 IP->printInst(&Inst, outs(), ""); 476 477 // Print debug info. 478 if (diContext) { 479 DILineInfo dli = 480 diContext->getLineInfoForAddress(SectAddress + Index); 481 // Print valid line info if it changed. 482 if (dli != lastLine && dli.getLine() != 0) 483 outs() << "\t## " << dli.getFileName() << ':' 484 << dli.getLine() << ':' << dli.getColumn(); 485 lastLine = dli; 486 } 487 outs() << "\n"; 488 } else { 489 errs() << "llvm-objdump: warning: invalid instruction encoding\n"; 490 if (Size == 0) 491 Size = 1; // skip illegible bytes 492 } 493 } 494 } else { 495 // Create CFG and use it for disassembly. 496 StringRef SymName; 497 Symbols[SymIdx].getName(SymName); 498 createMCFunctionAndSaveCalls( 499 SymName, DisAsm.get(), memoryObject, Start, End, 500 InstrAnalysis.get(), Start, DebugOut, FunctionMap, Functions); 501 } 502 } 503 if (!CFG && !symbolTableWorked) { 504 // Reading the symbol table didn't work, disassemble the whole section. 505 uint64_t SectAddress; 506 Sections[SectIdx].getAddress(SectAddress); 507 uint64_t SectSize; 508 Sections[SectIdx].getSize(SectSize); 509 uint64_t InstSize; 510 for (uint64_t Index = 0; Index < SectSize; Index += InstSize) { 511 MCInst Inst; 512 513 if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index, 514 DebugOut, nulls())) { 515 outs() << format("%8" PRIx64 ":\t", SectAddress + Index); 516 DumpBytes(StringRef(Bytes.data() + Index, InstSize)); 517 IP->printInst(&Inst, outs(), ""); 518 outs() << "\n"; 519 } else { 520 errs() << "llvm-objdump: warning: invalid instruction encoding\n"; 521 if (InstSize == 0) 522 InstSize = 1; // skip illegible bytes 523 } 524 } 525 } 526 527 if (CFG) { 528 if (!symbolTableWorked) { 529 // Reading the symbol table didn't work, create a big __TEXT symbol. 530 uint64_t SectSize = 0, SectAddress = 0; 531 Sections[SectIdx].getSize(SectSize); 532 Sections[SectIdx].getAddress(SectAddress); 533 createMCFunctionAndSaveCalls("__TEXT", DisAsm.get(), memoryObject, 534 0, SectSize, 535 InstrAnalysis.get(), 536 SectAddress, DebugOut, 537 FunctionMap, Functions); 538 } 539 for (std::map<uint64_t, MCFunction*>::iterator mi = FunctionMap.begin(), 540 me = FunctionMap.end(); mi != me; ++mi) 541 if (mi->second == 0) { 542 // Create functions for the remaining callees we have gathered, 543 // but we didn't find a name for them. 544 uint64_t SectSize = 0; 545 Sections[SectIdx].getSize(SectSize); 546 547 SmallVector<uint64_t, 16> Calls; 548 MCFunction f = 549 MCFunction::createFunctionFromMC("unknown", DisAsm.get(), 550 memoryObject, mi->first, 551 SectSize, 552 InstrAnalysis.get(), DebugOut, 553 Calls); 554 Functions.push_back(f); 555 mi->second = &Functions.back(); 556 for (unsigned i = 0, e = Calls.size(); i != e; ++i) { 557 std::pair<uint64_t, MCFunction*> p(Calls[i], (MCFunction*)0); 558 if (FunctionMap.insert(p).second) 559 mi = FunctionMap.begin(); 560 } 561 } 562 563 DenseSet<uint64_t> PrintedBlocks; 564 for (unsigned ffi = 0, ffe = Functions.size(); ffi != ffe; ++ffi) { 565 MCFunction &f = Functions[ffi]; 566 for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){ 567 if (!PrintedBlocks.insert(fi->first).second) 568 continue; // We already printed this block. 569 570 // We assume a block has predecessors when it's the first block after 571 // a symbol. 572 bool hasPreds = FunctionMap.find(fi->first) != FunctionMap.end(); 573 574 // See if this block has predecessors. 575 // FIXME: Slow. 576 for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe; 577 ++pi) 578 if (pi->second.contains(fi->first)) { 579 hasPreds = true; 580 break; 581 } 582 583 uint64_t SectSize = 0, SectAddress; 584 Sections[SectIdx].getSize(SectSize); 585 Sections[SectIdx].getAddress(SectAddress); 586 587 // No predecessors, this is a data block. Print as .byte directives. 588 if (!hasPreds) { 589 uint64_t End = llvm::next(fi) == fe ? SectSize : 590 llvm::next(fi)->first; 591 outs() << "# " << End-fi->first << " bytes of data:\n"; 592 for (unsigned pos = fi->first; pos != End; ++pos) { 593 outs() << format("%8x:\t", SectAddress + pos); 594 DumpBytes(StringRef(Bytes.data() + pos, 1)); 595 outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]); 596 } 597 continue; 598 } 599 600 if (fi->second.contains(fi->first)) // Print a header for simple loops 601 outs() << "# Loop begin:\n"; 602 603 DILineInfo lastLine; 604 // Walk over the instructions and print them. 605 for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie; 606 ++ii) { 607 const MCDecodedInst &Inst = fi->second.getInsts()[ii]; 608 609 // If there's a symbol at this address, print its name. 610 if (FunctionMap.find(SectAddress + Inst.Address) != 611 FunctionMap.end()) 612 outs() << FunctionMap[SectAddress + Inst.Address]-> getName() 613 << ":\n"; 614 615 outs() << format("%8" PRIx64 ":\t", SectAddress + Inst.Address); 616 DumpBytes(StringRef(Bytes.data() + Inst.Address, Inst.Size)); 617 618 if (fi->second.contains(fi->first)) // Indent simple loops. 619 outs() << '\t'; 620 621 IP->printInst(&Inst.Inst, outs(), ""); 622 623 // Look for relocations inside this instructions, if there is one 624 // print its target and additional information if available. 625 for (unsigned j = 0; j != Relocs.size(); ++j) 626 if (Relocs[j].first >= SectAddress + Inst.Address && 627 Relocs[j].first < SectAddress + Inst.Address + Inst.Size) { 628 StringRef SymName; 629 uint64_t Addr; 630 Relocs[j].second.getAddress(Addr); 631 Relocs[j].second.getName(SymName); 632 633 outs() << "\t# " << SymName << ' '; 634 DumpAddress(Addr, Sections, MachOObj, outs()); 635 } 636 637 // If this instructions contains an address, see if we can evaluate 638 // it and print additional information. 639 uint64_t targ = InstrAnalysis->evaluateBranch(Inst.Inst, 640 Inst.Address, 641 Inst.Size); 642 if (targ != -1ULL) 643 DumpAddress(targ, Sections, MachOObj, outs()); 644 645 // Print debug info. 646 if (diContext) { 647 DILineInfo dli = 648 diContext->getLineInfoForAddress(SectAddress + Inst.Address); 649 // Print valid line info if it changed. 650 if (dli != lastLine && dli.getLine() != 0) 651 outs() << "\t## " << dli.getFileName() << ':' 652 << dli.getLine() << ':' << dli.getColumn(); 653 lastLine = dli; 654 } 655 656 outs() << '\n'; 657 } 658 } 659 660 emitDOTFile((f.getName().str() + ".dot").c_str(), f, IP.get()); 661 } 662 } 663 } 664} 665