1 //===-- llvm-objdump.cpp - Object file dumping utility for llvm -----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This program is a utility that works like binutils "objdump", that is, it
11 // dumps out a plethora of information about an object file depending on the
14 // The flags and output of this program should be near identical to those of
17 //===----------------------------------------------------------------------===//
19 #include "llvm-objdump.h"
20 #include "llvm/ADT/STLExtras.h"
21 #include "llvm/ADT/StringExtras.h"
22 #include "llvm/ADT/Triple.h"
23 #include "llvm/MC/MCAsmInfo.h"
24 #include "llvm/MC/MCAtom.h"
25 #include "llvm/MC/MCContext.h"
26 #include "llvm/MC/MCDisassembler.h"
27 #include "llvm/MC/MCFunction.h"
28 #include "llvm/MC/MCInst.h"
29 #include "llvm/MC/MCInstPrinter.h"
30 #include "llvm/MC/MCInstrAnalysis.h"
31 #include "llvm/MC/MCInstrInfo.h"
32 #include "llvm/MC/MCModule.h"
33 #include "llvm/MC/MCModuleYAML.h"
34 #include "llvm/MC/MCObjectDisassembler.h"
35 #include "llvm/MC/MCObjectFileInfo.h"
36 #include "llvm/MC/MCObjectSymbolizer.h"
37 #include "llvm/MC/MCRegisterInfo.h"
38 #include "llvm/MC/MCRelocationInfo.h"
39 #include "llvm/MC/MCSubtargetInfo.h"
40 #include "llvm/Object/Archive.h"
41 #include "llvm/Object/COFF.h"
42 #include "llvm/Object/MachO.h"
43 #include "llvm/Object/ObjectFile.h"
44 #include "llvm/Support/Casting.h"
45 #include "llvm/Support/CommandLine.h"
46 #include "llvm/Support/Debug.h"
47 #include "llvm/Support/FileSystem.h"
48 #include "llvm/Support/Format.h"
49 #include "llvm/Support/GraphWriter.h"
50 #include "llvm/Support/Host.h"
51 #include "llvm/Support/ManagedStatic.h"
52 #include "llvm/Support/MemoryBuffer.h"
53 #include "llvm/Support/MemoryObject.h"
54 #include "llvm/Support/PrettyStackTrace.h"
55 #include "llvm/Support/Signals.h"
56 #include "llvm/Support/SourceMgr.h"
57 #include "llvm/Support/TargetRegistry.h"
58 #include "llvm/Support/TargetSelect.h"
59 #include "llvm/Support/raw_ostream.h"
60 #include "llvm/Support/system_error.h"
66 using namespace object;
68 static cl::list<std::string>
69 InputFilenames(cl::Positional, cl::desc("<input object files>"),cl::ZeroOrMore);
72 Disassemble("disassemble",
73 cl::desc("Display assembler mnemonics for the machine instructions"));
75 Disassembled("d", cl::desc("Alias for --disassemble"),
76 cl::aliasopt(Disassemble));
79 Relocations("r", cl::desc("Display the relocation entries in the file"));
82 SectionContents("s", cl::desc("Display the content of each section"));
85 SymbolTable("t", cl::desc("Display the symbol table"));
88 MachOOpt("macho", cl::desc("Use MachO specific object file parser"));
90 MachOm("m", cl::desc("Alias for --macho"), cl::aliasopt(MachOOpt));
93 llvm::TripleName("triple", cl::desc("Target triple to disassemble for, "
94 "see -version for available targets"));
97 llvm::ArchName("arch", cl::desc("Target arch to disassemble for, "
98 "see -version for available targets"));
101 SectionHeaders("section-headers", cl::desc("Display summaries of the headers "
102 "for each section."));
104 SectionHeadersShort("headers", cl::desc("Alias for --section-headers"),
105 cl::aliasopt(SectionHeaders));
107 SectionHeadersShorter("h", cl::desc("Alias for --section-headers"),
108 cl::aliasopt(SectionHeaders));
110 static cl::list<std::string>
113 cl::desc("Target specific attributes"),
114 cl::value_desc("a1,+a2,-a3,..."));
117 NoShowRawInsn("no-show-raw-insn", cl::desc("When disassembling instructions, "
118 "do not print the instruction bytes."));
121 UnwindInfo("unwind-info", cl::desc("Display unwind information"));
124 UnwindInfoShort("u", cl::desc("Alias for --unwind-info"),
125 cl::aliasopt(UnwindInfo));
128 PrivateHeaders("private-headers",
129 cl::desc("Display format specific file headers"));
132 PrivateHeadersShort("p", cl::desc("Alias for --private-headers"),
133 cl::aliasopt(PrivateHeaders));
136 Symbolize("symbolize", cl::desc("When disassembling instructions, "
137 "try to symbolize operands."));
140 CFG("cfg", cl::desc("Create a CFG for every function found in the object"
141 " and write it to a graphviz file"));
143 // FIXME: Does it make sense to have a dedicated tool for yaml cfg output?
144 static cl::opt<std::string>
146 cl::desc("Create a CFG and write it as a YAML MCModule."),
147 cl::value_desc("yaml output file"));
149 static StringRef ToolName;
151 bool llvm::error(error_code EC) {
155 outs() << ToolName << ": error reading file: " << EC.message() << ".\n";
160 static const Target *getTarget(const ObjectFile *Obj = NULL) {
161 // Figure out the target triple.
162 llvm::Triple TheTriple("unknown-unknown-unknown");
163 if (TripleName.empty()) {
165 TheTriple.setArch(Triple::ArchType(Obj->getArch()));
166 // TheTriple defaults to ELF, and COFF doesn't have an environment:
167 // the best we can do here is indicate that it is mach-o.
169 TheTriple.setObjectFormat(Triple::MachO);
172 TheTriple.setTriple(Triple::normalize(TripleName));
174 // Get the target specific parser.
176 const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple,
179 errs() << ToolName << ": " << Error;
183 // Update the triple name and return the found target.
184 TripleName = TheTriple.getTriple();
188 // Write a graphviz file for the CFG inside an MCFunction.
189 // FIXME: Use GraphWriter
190 static void emitDOTFile(const char *FileName, const MCFunction &f,
192 // Start a new dot file.
194 raw_fd_ostream Out(FileName, Error, sys::fs::F_Text);
195 if (!Error.empty()) {
196 errs() << "llvm-objdump: warning: " << Error << '\n';
200 Out << "digraph \"" << f.getName() << "\" {\n";
201 Out << "graph [ rankdir = \"LR\" ];\n";
202 for (MCFunction::const_iterator i = f.begin(), e = f.end(); i != e; ++i) {
203 // Only print blocks that have predecessors.
204 bool hasPreds = (*i)->pred_begin() != (*i)->pred_end();
206 if (!hasPreds && i != f.begin())
209 Out << '"' << (*i)->getInsts()->getBeginAddr() << "\" [ label=\"<a>";
210 // Print instructions.
211 for (unsigned ii = 0, ie = (*i)->getInsts()->size(); ii != ie;
213 if (ii != 0) // Not the first line, start a new row.
215 if (ii + 1 == ie) // Last line, add an end id.
218 // Escape special chars and print the instruction in mnemonic form.
220 raw_string_ostream OS(Str);
221 IP->printInst(&(*i)->getInsts()->at(ii).Inst, OS, "");
222 Out << DOT::EscapeString(OS.str());
224 Out << "\" shape=\"record\" ];\n";
227 for (MCBasicBlock::succ_const_iterator si = (*i)->succ_begin(),
228 se = (*i)->succ_end(); si != se; ++si)
229 Out << (*i)->getInsts()->getBeginAddr() << ":o -> "
230 << (*si)->getInsts()->getBeginAddr() << ":a\n";
235 void llvm::DumpBytes(StringRef bytes) {
236 static const char hex_rep[] = "0123456789abcdef";
237 // FIXME: The real way to do this is to figure out the longest instruction
238 // and align to that size before printing. I'll fix this when I get
239 // around to outputting relocations.
240 // 15 is the longest x86 instruction
241 // 3 is for the hex rep of a byte + a space.
242 // 1 is for the null terminator.
243 enum { OutputSize = (15 * 3) + 1 };
244 char output[OutputSize];
246 assert(bytes.size() <= 15
247 && "DumpBytes only supports instructions of up to 15 bytes");
248 memset(output, ' ', sizeof(output));
250 for (StringRef::iterator i = bytes.begin(),
251 e = bytes.end(); i != e; ++i) {
252 output[index] = hex_rep[(*i & 0xF0) >> 4];
253 output[index + 1] = hex_rep[*i & 0xF];
257 output[sizeof(output) - 1] = 0;
261 bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
262 uint64_t a_addr, b_addr;
263 if (error(a.getOffset(a_addr))) return false;
264 if (error(b.getOffset(b_addr))) return false;
265 return a_addr < b_addr;
268 static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
269 const Target *TheTarget = getTarget(Obj);
270 // getTarget() will have already issued a diagnostic if necessary, so
271 // just bail here if it failed.
275 // Package up features to be passed to target/subtarget
276 std::string FeaturesStr;
278 SubtargetFeatures Features;
279 for (unsigned i = 0; i != MAttrs.size(); ++i)
280 Features.AddFeature(MAttrs[i]);
281 FeaturesStr = Features.getString();
284 std::unique_ptr<const MCRegisterInfo> MRI(
285 TheTarget->createMCRegInfo(TripleName));
287 errs() << "error: no register info for target " << TripleName << "\n";
291 // Set up disassembler.
292 std::unique_ptr<const MCAsmInfo> AsmInfo(
293 TheTarget->createMCAsmInfo(*MRI, TripleName));
295 errs() << "error: no assembly info for target " << TripleName << "\n";
299 std::unique_ptr<const MCSubtargetInfo> STI(
300 TheTarget->createMCSubtargetInfo(TripleName, "", FeaturesStr));
302 errs() << "error: no subtarget info for target " << TripleName << "\n";
306 std::unique_ptr<const MCInstrInfo> MII(TheTarget->createMCInstrInfo());
308 errs() << "error: no instruction info for target " << TripleName << "\n";
312 std::unique_ptr<MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
314 errs() << "error: no disassembler for target " << TripleName << "\n";
318 std::unique_ptr<const MCObjectFileInfo> MOFI;
319 std::unique_ptr<MCContext> Ctx;
322 MOFI.reset(new MCObjectFileInfo);
323 Ctx.reset(new MCContext(AsmInfo.get(), MRI.get(), MOFI.get()));
324 std::unique_ptr<MCRelocationInfo> RelInfo(
325 TheTarget->createMCRelocationInfo(TripleName, *Ctx.get()));
327 std::unique_ptr<MCSymbolizer> Symzer(
328 MCObjectSymbolizer::createObjectSymbolizer(*Ctx.get(),
329 std::move(RelInfo), Obj));
331 DisAsm->setSymbolizer(std::move(Symzer));
335 std::unique_ptr<const MCInstrAnalysis> MIA(
336 TheTarget->createMCInstrAnalysis(MII.get()));
338 int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
339 std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
340 AsmPrinterVariant, *AsmInfo, *MII, *MRI, *STI));
342 errs() << "error: no instruction printer for target " << TripleName
347 if (CFG || !YAMLCFG.empty()) {
348 std::unique_ptr<MCObjectDisassembler> OD(
349 new MCObjectDisassembler(*Obj, *DisAsm, *MIA));
350 std::unique_ptr<MCModule> Mod(OD->buildModule(/* withCFG */ true));
351 for (MCModule::const_atom_iterator AI = Mod->atom_begin(),
352 AE = Mod->atom_end();
354 outs() << "Atom " << (*AI)->getName() << ": \n";
355 if (const MCTextAtom *TA = dyn_cast<MCTextAtom>(*AI)) {
356 for (MCTextAtom::const_iterator II = TA->begin(), IE = TA->end();
359 IP->printInst(&II->Inst, outs(), "");
365 for (MCModule::const_func_iterator FI = Mod->func_begin(),
366 FE = Mod->func_end();
368 static int filenum = 0;
369 emitDOTFile((Twine((*FI)->getName()) + "_" +
370 utostr(filenum) + ".dot").str().c_str(),
375 if (!YAMLCFG.empty()) {
377 raw_fd_ostream YAMLOut(YAMLCFG.c_str(), Error, sys::fs::F_Text);
378 if (!Error.empty()) {
379 errs() << ToolName << ": warning: " << Error << '\n';
382 mcmodule2yaml(YAMLOut, *Mod, *MII, *MRI);
386 StringRef Fmt = Obj->getBytesInAddress() > 4 ? "\t\t%016" PRIx64 ": " :
387 "\t\t\t%08" PRIx64 ": ";
389 // Create a mapping, RelocSecs = SectionRelocMap[S], where sections
390 // in RelocSecs contain the relocations for section S.
392 std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap;
393 for (const SectionRef &Section : Obj->sections()) {
394 section_iterator Sec2 = Section.getRelocatedSection();
395 if (Sec2 != Obj->section_end())
396 SectionRelocMap[*Sec2].push_back(Section);
399 for (const SectionRef &Section : Obj->sections()) {
401 if (error(Section.isText(Text)))
406 uint64_t SectionAddr;
407 if (error(Section.getAddress(SectionAddr)))
411 if (error(Section.getSize(SectSize)))
414 // Make a list of all the symbols in this section.
415 std::vector<std::pair<uint64_t, StringRef>> Symbols;
416 for (const SymbolRef &Symbol : Obj->symbols()) {
418 if (!error(Section.containsSymbol(Symbol, contains)) && contains) {
420 if (error(Symbol.getAddress(Address)))
422 if (Address == UnknownAddressOrSize)
424 Address -= SectionAddr;
425 if (Address >= SectSize)
429 if (error(Symbol.getName(Name)))
431 Symbols.push_back(std::make_pair(Address, Name));
435 // Sort the symbols by address, just in case they didn't come in that way.
436 array_pod_sort(Symbols.begin(), Symbols.end());
438 // Make a list of all the relocations for this section.
439 std::vector<RelocationRef> Rels;
441 for (const SectionRef &RelocSec : SectionRelocMap[Section]) {
442 for (const RelocationRef &Reloc : RelocSec.relocations()) {
443 Rels.push_back(Reloc);
448 // Sort relocations by address.
449 std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
451 StringRef SegmentName = "";
452 if (const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(Obj)) {
453 DataRefImpl DR = Section.getRawDataRefImpl();
454 SegmentName = MachO->getSectionFinalSegmentName(DR);
457 if (error(Section.getName(name)))
459 outs() << "Disassembly of section ";
460 if (!SegmentName.empty())
461 outs() << SegmentName << ",";
462 outs() << name << ':';
464 // If the section has no symbols just insert a dummy one and disassemble
465 // the whole section.
467 Symbols.push_back(std::make_pair(0, name));
470 SmallString<40> Comments;
471 raw_svector_ostream CommentStream(Comments);
474 if (error(Section.getContents(Bytes)))
476 StringRefMemoryObject memoryObject(Bytes, SectionAddr);
480 std::vector<RelocationRef>::const_iterator rel_cur = Rels.begin();
481 std::vector<RelocationRef>::const_iterator rel_end = Rels.end();
482 // Disassemble symbol by symbol.
483 for (unsigned si = 0, se = Symbols.size(); si != se; ++si) {
484 uint64_t Start = Symbols[si].first;
486 // The end is either the size of the section or the beginning of the next
490 // Make sure this symbol takes up space.
491 else if (Symbols[si + 1].first != Start)
492 End = Symbols[si + 1].first - 1;
494 // This symbol has the same address as the next symbol. Skip it.
497 outs() << '\n' << Symbols[si].second << ":\n";
500 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
502 raw_ostream &DebugOut = nulls();
505 for (Index = Start; Index < End; Index += Size) {
508 if (DisAsm->getInstruction(Inst, Size, memoryObject,
510 DebugOut, CommentStream)) {
511 outs() << format("%8" PRIx64 ":", SectionAddr + Index);
512 if (!NoShowRawInsn) {
514 DumpBytes(StringRef(Bytes.data() + Index, Size));
516 IP->printInst(&Inst, outs(), "");
517 outs() << CommentStream.str();
521 errs() << ToolName << ": warning: invalid instruction encoding\n";
523 Size = 1; // skip illegible bytes
526 // Print relocation for instruction.
527 while (rel_cur != rel_end) {
530 SmallString<16> name;
533 // If this relocation is hidden, skip it.
534 if (error(rel_cur->getHidden(hidden))) goto skip_print_rel;
535 if (hidden) goto skip_print_rel;
537 if (error(rel_cur->getOffset(addr))) goto skip_print_rel;
538 // Stop when rel_cur's address is past the current instruction.
539 if (addr >= Index + Size) break;
540 if (error(rel_cur->getTypeName(name))) goto skip_print_rel;
541 if (error(rel_cur->getValueString(val))) goto skip_print_rel;
543 outs() << format(Fmt.data(), SectionAddr + addr) << name
544 << "\t" << val << "\n";
554 static void PrintRelocations(const ObjectFile *Obj) {
555 StringRef Fmt = Obj->getBytesInAddress() > 4 ? "%016" PRIx64 :
557 for (const SectionRef &Section : Obj->sections()) {
558 if (Section.relocation_begin() == Section.relocation_end())
561 if (error(Section.getName(secname)))
563 outs() << "RELOCATION RECORDS FOR [" << secname << "]:\n";
564 for (const RelocationRef &Reloc : Section.relocations()) {
567 SmallString<32> relocname;
568 SmallString<32> valuestr;
569 if (error(Reloc.getHidden(hidden)))
573 if (error(Reloc.getTypeName(relocname)))
575 if (error(Reloc.getOffset(address)))
577 if (error(Reloc.getValueString(valuestr)))
579 outs() << format(Fmt.data(), address) << " " << relocname << " "
586 static void PrintSectionHeaders(const ObjectFile *Obj) {
587 outs() << "Sections:\n"
588 "Idx Name Size Address Type\n";
590 for (const SectionRef &Section : Obj->sections()) {
592 if (error(Section.getName(Name)))
595 if (error(Section.getAddress(Address)))
598 if (error(Section.getSize(Size)))
600 bool Text, Data, BSS;
601 if (error(Section.isText(Text)))
603 if (error(Section.isData(Data)))
605 if (error(Section.isBSS(BSS)))
607 std::string Type = (std::string(Text ? "TEXT " : "") +
608 (Data ? "DATA " : "") + (BSS ? "BSS" : ""));
609 outs() << format("%3d %-13s %08" PRIx64 " %016" PRIx64 " %s\n", i,
610 Name.str().c_str(), Size, Address, Type.c_str());
615 static void PrintSectionContents(const ObjectFile *Obj) {
617 for (const SectionRef &Section : Obj->sections()) {
622 if (error(Section.getName(Name)))
624 if (error(Section.getContents(Contents)))
626 if (error(Section.getAddress(BaseAddr)))
628 if (error(Section.isBSS(BSS)))
631 outs() << "Contents of section " << Name << ":\n";
633 outs() << format("<skipping contents of bss section at [%04" PRIx64
634 ", %04" PRIx64 ")>\n", BaseAddr,
635 BaseAddr + Contents.size());
639 // Dump out the content as hex and printable ascii characters.
640 for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) {
641 outs() << format(" %04" PRIx64 " ", BaseAddr + addr);
643 for (std::size_t i = 0; i < 16; ++i) {
644 if (i != 0 && i % 4 == 0)
647 outs() << hexdigit((Contents[addr + i] >> 4) & 0xF, true)
648 << hexdigit(Contents[addr + i] & 0xF, true);
654 for (std::size_t i = 0; i < 16 && addr + i < end; ++i) {
655 if (std::isprint(static_cast<unsigned char>(Contents[addr + i]) & 0xFF))
656 outs() << Contents[addr + i];
665 static void PrintCOFFSymbolTable(const COFFObjectFile *coff) {
666 const coff_file_header *header;
667 if (error(coff->getHeader(header)))
670 for (unsigned SI = 0, SE = header->NumberOfSymbols; SI != SE; ++SI) {
671 const coff_symbol *Symbol;
673 if (error(coff->getSymbol(SI, Symbol)))
676 if (error(coff->getSymbolName(Symbol, Name)))
679 outs() << "[" << format("%2d", SI) << "]"
680 << "(sec " << format("%2d", int(Symbol->SectionNumber)) << ")"
681 << "(fl 0x00)" // Flag bits, which COFF doesn't have.
682 << "(ty " << format("%3x", unsigned(Symbol->Type)) << ")"
683 << "(scl " << format("%3x", unsigned(Symbol->StorageClass)) << ") "
684 << "(nx " << unsigned(Symbol->NumberOfAuxSymbols) << ") "
685 << "0x" << format("%08x", unsigned(Symbol->Value)) << " "
688 for (unsigned AI = 0, AE = Symbol->NumberOfAuxSymbols; AI < AE; ++AI, ++SI) {
689 if (Symbol->isSectionDefinition()) {
690 const coff_aux_section_definition *asd;
691 if (error(coff->getAuxSymbol<coff_aux_section_definition>(SI + 1, asd)))
695 << format("scnlen 0x%x nreloc %d nlnno %d checksum 0x%x "
696 , unsigned(asd->Length)
697 , unsigned(asd->NumberOfRelocations)
698 , unsigned(asd->NumberOfLinenumbers)
699 , unsigned(asd->CheckSum))
700 << format("assoc %d comdat %d\n"
701 , unsigned(asd->Number)
702 , unsigned(asd->Selection));
703 } else if (Symbol->isFileRecord()) {
704 const coff_aux_file *AF;
705 if (error(coff->getAuxSymbol<coff_aux_file>(SI + 1, AF)))
708 StringRef Name(AF->FileName,
709 Symbol->NumberOfAuxSymbols * COFF::SymbolSize);
710 outs() << "AUX " << Name.rtrim(StringRef("\0", 1)) << '\n';
712 SI = SI + Symbol->NumberOfAuxSymbols;
715 outs() << "AUX Unknown\n";
721 static void PrintSymbolTable(const ObjectFile *o) {
722 outs() << "SYMBOL TABLE:\n";
724 if (const COFFObjectFile *coff = dyn_cast<const COFFObjectFile>(o)) {
725 PrintCOFFSymbolTable(coff);
728 for (const SymbolRef &Symbol : o->symbols()) {
731 SymbolRef::Type Type;
733 uint32_t Flags = Symbol.getFlags();
734 section_iterator Section = o->section_end();
735 if (error(Symbol.getName(Name)))
737 if (error(Symbol.getAddress(Address)))
739 if (error(Symbol.getType(Type)))
741 if (error(Symbol.getSize(Size)))
743 if (error(Symbol.getSection(Section)))
746 bool Global = Flags & SymbolRef::SF_Global;
747 bool Weak = Flags & SymbolRef::SF_Weak;
748 bool Absolute = Flags & SymbolRef::SF_Absolute;
750 if (Address == UnknownAddressOrSize)
752 if (Size == UnknownAddressOrSize)
755 if (Type != SymbolRef::ST_Unknown)
756 GlobLoc = Global ? 'g' : 'l';
757 char Debug = (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File)
760 if (Type == SymbolRef::ST_File)
762 else if (Type == SymbolRef::ST_Function)
765 const char *Fmt = o->getBytesInAddress() > 4 ? "%016" PRIx64 :
768 outs() << format(Fmt, Address) << " "
769 << GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' '
770 << (Weak ? 'w' : ' ') // Weak?
771 << ' ' // Constructor. Not supported yet.
772 << ' ' // Warning. Not supported yet.
773 << ' ' // Indirect reference to another symbol.
774 << Debug // Debugging (d) or dynamic (D) symbol.
775 << FileFunc // Name of function (F), file (f) or object (O).
779 } else if (Section == o->section_end()) {
782 if (const MachOObjectFile *MachO =
783 dyn_cast<const MachOObjectFile>(o)) {
784 DataRefImpl DR = Section->getRawDataRefImpl();
785 StringRef SegmentName = MachO->getSectionFinalSegmentName(DR);
786 outs() << SegmentName << ",";
788 StringRef SectionName;
789 if (error(Section->getName(SectionName)))
791 outs() << SectionName;
794 << format("%08" PRIx64 " ", Size)
800 static void PrintUnwindInfo(const ObjectFile *o) {
801 outs() << "Unwind info:\n\n";
803 if (const COFFObjectFile *coff = dyn_cast<COFFObjectFile>(o)) {
804 printCOFFUnwindInfo(coff);
806 // TODO: Extract DWARF dump tool to objdump.
807 errs() << "This operation is only currently supported "
808 "for COFF object files.\n";
813 static void printPrivateFileHeader(const ObjectFile *o) {
815 printELFFileHeader(o);
816 } else if (o->isCOFF()) {
817 printCOFFFileHeader(o);
821 static void DumpObject(const ObjectFile *o) {
823 outs() << o->getFileName()
824 << ":\tfile format " << o->getFileFormatName() << "\n\n";
827 DisassembleObject(o, Relocations);
828 if (Relocations && !Disassemble)
831 PrintSectionHeaders(o);
833 PrintSectionContents(o);
839 printPrivateFileHeader(o);
842 /// @brief Dump each object file in \a a;
843 static void DumpArchive(const Archive *a) {
844 for (Archive::child_iterator i = a->child_begin(), e = a->child_end(); i != e;
846 std::unique_ptr<Binary> child;
847 if (error_code EC = i->getAsBinary(child)) {
848 // Ignore non-object files.
849 if (EC != object_error::invalid_file_type)
850 errs() << ToolName << ": '" << a->getFileName() << "': " << EC.message()
854 if (ObjectFile *o = dyn_cast<ObjectFile>(child.get()))
857 errs() << ToolName << ": '" << a->getFileName() << "': "
858 << "Unrecognized file type.\n";
862 /// @brief Open file and figure out how to dump it.
863 static void DumpInput(StringRef file) {
864 // If file isn't stdin, check that it exists.
865 if (file != "-" && !sys::fs::exists(file)) {
866 errs() << ToolName << ": '" << file << "': " << "No such file\n";
870 if (MachOOpt && Disassemble) {
871 DisassembleInputMachO(file);
875 // Attempt to open the binary.
876 ErrorOr<Binary *> BinaryOrErr = createBinary(file);
877 if (error_code EC = BinaryOrErr.getError()) {
878 errs() << ToolName << ": '" << file << "': " << EC.message() << ".\n";
881 std::unique_ptr<Binary> binary(BinaryOrErr.get());
883 if (Archive *a = dyn_cast<Archive>(binary.get()))
885 else if (ObjectFile *o = dyn_cast<ObjectFile>(binary.get()))
888 errs() << ToolName << ": '" << file << "': " << "Unrecognized file type.\n";
891 int main(int argc, char **argv) {
892 // Print a stack trace if we signal out.
893 sys::PrintStackTraceOnErrorSignal();
894 PrettyStackTraceProgram X(argc, argv);
895 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
897 // Initialize targets and assembly printers/parsers.
898 llvm::InitializeAllTargetInfos();
899 llvm::InitializeAllTargetMCs();
900 llvm::InitializeAllAsmParsers();
901 llvm::InitializeAllDisassemblers();
903 // Register the target printer for --version.
904 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
906 cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n");
907 TripleName = Triple::normalize(TripleName);
911 // Defaults to a.out if no filenames specified.
912 if (InputFilenames.size() == 0)
913 InputFilenames.push_back("a.out");
921 && !PrivateHeaders) {
922 cl::PrintHelpMessage();
926 std::for_each(InputFilenames.begin(), InputFilenames.end(),