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(), RelInfo, Obj));
330 DisAsm->setSymbolizer(std::move(Symzer));
334 std::unique_ptr<const MCInstrAnalysis> MIA(
335 TheTarget->createMCInstrAnalysis(MII.get()));
337 int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
338 std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
339 AsmPrinterVariant, *AsmInfo, *MII, *MRI, *STI));
341 errs() << "error: no instruction printer for target " << TripleName
346 if (CFG || !YAMLCFG.empty()) {
347 std::unique_ptr<MCObjectDisassembler> OD(
348 new MCObjectDisassembler(*Obj, *DisAsm, *MIA));
349 std::unique_ptr<MCModule> Mod(OD->buildModule(/* withCFG */ true));
350 for (MCModule::const_atom_iterator AI = Mod->atom_begin(),
351 AE = Mod->atom_end();
353 outs() << "Atom " << (*AI)->getName() << ": \n";
354 if (const MCTextAtom *TA = dyn_cast<MCTextAtom>(*AI)) {
355 for (MCTextAtom::const_iterator II = TA->begin(), IE = TA->end();
358 IP->printInst(&II->Inst, outs(), "");
364 for (MCModule::const_func_iterator FI = Mod->func_begin(),
365 FE = Mod->func_end();
367 static int filenum = 0;
368 emitDOTFile((Twine((*FI)->getName()) + "_" +
369 utostr(filenum) + ".dot").str().c_str(),
374 if (!YAMLCFG.empty()) {
376 raw_fd_ostream YAMLOut(YAMLCFG.c_str(), Error, sys::fs::F_Text);
377 if (!Error.empty()) {
378 errs() << ToolName << ": warning: " << Error << '\n';
381 mcmodule2yaml(YAMLOut, *Mod, *MII, *MRI);
385 // Create a mapping, RelocSecs = SectionRelocMap[S], where sections
386 // in RelocSecs contain the relocations for section S.
388 std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap;
389 for (const SectionRef &Section : Obj->sections()) {
390 section_iterator Sec2 = Section.getRelocatedSection();
391 if (Sec2 != Obj->section_end())
392 SectionRelocMap[*Sec2].push_back(Section);
395 for (const SectionRef &Section : Obj->sections()) {
397 if (error(Section.isText(Text)))
402 uint64_t SectionAddr;
403 if (error(Section.getAddress(SectionAddr)))
407 if (error(Section.getSize(SectSize)))
410 // Make a list of all the symbols in this section.
411 std::vector<std::pair<uint64_t, StringRef> > Symbols;
412 for (symbol_iterator SI = Obj->symbol_begin(), SE = Obj->symbol_end();
415 if (!error(Section.containsSymbol(*SI, contains)) && contains) {
417 if (error(SI->getAddress(Address)))
419 if (Address == UnknownAddressOrSize)
421 Address -= SectionAddr;
422 if (Address >= SectSize)
426 if (error(SI->getName(Name)))
428 Symbols.push_back(std::make_pair(Address, Name));
432 // Sort the symbols by address, just in case they didn't come in that way.
433 array_pod_sort(Symbols.begin(), Symbols.end());
435 // Make a list of all the relocations for this section.
436 std::vector<RelocationRef> Rels;
438 SmallVectorImpl<SectionRef> *RelocSecs = &SectionRelocMap[Section];
439 for (SmallVectorImpl<SectionRef>::iterator RelocSec = RelocSecs->begin(),
440 E = RelocSecs->end();
441 RelocSec != E; ++RelocSec) {
442 for (relocation_iterator RI = RelocSec->relocation_begin(),
443 RE = RelocSec->relocation_end();
449 // Sort relocations by address.
450 std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
452 StringRef SegmentName = "";
453 if (const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(Obj)) {
454 DataRefImpl DR = Section.getRawDataRefImpl();
455 SegmentName = MachO->getSectionFinalSegmentName(DR);
458 if (error(Section.getName(name)))
460 outs() << "Disassembly of section ";
461 if (!SegmentName.empty())
462 outs() << SegmentName << ",";
463 outs() << name << ':';
465 // If the section has no symbols just insert a dummy one and disassemble
466 // the whole section.
468 Symbols.push_back(std::make_pair(0, name));
471 SmallString<40> Comments;
472 raw_svector_ostream CommentStream(Comments);
475 if (error(Section.getContents(Bytes)))
477 StringRefMemoryObject memoryObject(Bytes, SectionAddr);
481 std::vector<RelocationRef>::const_iterator rel_cur = Rels.begin();
482 std::vector<RelocationRef>::const_iterator rel_end = Rels.end();
483 // Disassemble symbol by symbol.
484 for (unsigned si = 0, se = Symbols.size(); si != se; ++si) {
485 uint64_t Start = Symbols[si].first;
487 // The end is either the size of the section or the beginning of the next
491 // Make sure this symbol takes up space.
492 else if (Symbols[si + 1].first != Start)
493 End = Symbols[si + 1].first - 1;
495 // This symbol has the same address as the next symbol. Skip it.
498 outs() << '\n' << Symbols[si].second << ":\n";
501 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
503 raw_ostream &DebugOut = nulls();
506 for (Index = Start; Index < End; Index += Size) {
509 if (DisAsm->getInstruction(Inst, Size, memoryObject,
511 DebugOut, CommentStream)) {
512 outs() << format("%8" PRIx64 ":", SectionAddr + Index);
513 if (!NoShowRawInsn) {
515 DumpBytes(StringRef(Bytes.data() + Index, Size));
517 IP->printInst(&Inst, outs(), "");
518 outs() << CommentStream.str();
522 errs() << ToolName << ": warning: invalid instruction encoding\n";
524 Size = 1; // skip illegible bytes
527 // Print relocation for instruction.
528 while (rel_cur != rel_end) {
531 SmallString<16> name;
534 // If this relocation is hidden, skip it.
535 if (error(rel_cur->getHidden(hidden))) goto skip_print_rel;
536 if (hidden) goto skip_print_rel;
538 if (error(rel_cur->getOffset(addr))) goto skip_print_rel;
539 // Stop when rel_cur's address is past the current instruction.
540 if (addr >= Index + Size) break;
541 if (error(rel_cur->getTypeName(name))) goto skip_print_rel;
542 if (error(rel_cur->getValueString(val))) goto skip_print_rel;
544 outs() << format("\t\t\t%8" PRIx64 ": ", SectionAddr + addr) << name
545 << "\t" << val << "\n";
555 static void PrintRelocations(const ObjectFile *Obj) {
556 for (const SectionRef &Section : Obj->sections()) {
557 if (Section.relocation_begin() == Section.relocation_end())
560 if (error(Section.getName(secname)))
562 outs() << "RELOCATION RECORDS FOR [" << secname << "]:\n";
563 for (relocation_iterator ri = Section.relocation_begin(),
564 re = Section.relocation_end();
568 SmallString<32> relocname;
569 SmallString<32> valuestr;
570 if (error(ri->getHidden(hidden))) continue;
571 if (hidden) continue;
572 if (error(ri->getTypeName(relocname))) continue;
573 if (error(ri->getOffset(address))) continue;
574 if (error(ri->getValueString(valuestr))) continue;
575 outs() << address << " " << relocname << " " << valuestr << "\n";
581 static void PrintSectionHeaders(const ObjectFile *Obj) {
582 outs() << "Sections:\n"
583 "Idx Name Size Address Type\n";
585 for (const SectionRef &Section : Obj->sections()) {
587 if (error(Section.getName(Name)))
590 if (error(Section.getAddress(Address)))
593 if (error(Section.getSize(Size)))
595 bool Text, Data, BSS;
596 if (error(Section.isText(Text)))
598 if (error(Section.isData(Data)))
600 if (error(Section.isBSS(BSS)))
602 std::string Type = (std::string(Text ? "TEXT " : "") +
603 (Data ? "DATA " : "") + (BSS ? "BSS" : ""));
604 outs() << format("%3d %-13s %08" PRIx64 " %016" PRIx64 " %s\n", i,
605 Name.str().c_str(), Size, Address, Type.c_str());
610 static void PrintSectionContents(const ObjectFile *Obj) {
612 for (const SectionRef &Section : Obj->sections()) {
617 if (error(Section.getName(Name)))
619 if (error(Section.getContents(Contents)))
621 if (error(Section.getAddress(BaseAddr)))
623 if (error(Section.isBSS(BSS)))
626 outs() << "Contents of section " << Name << ":\n";
628 outs() << format("<skipping contents of bss section at [%04" PRIx64
629 ", %04" PRIx64 ")>\n", BaseAddr,
630 BaseAddr + Contents.size());
634 // Dump out the content as hex and printable ascii characters.
635 for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) {
636 outs() << format(" %04" PRIx64 " ", BaseAddr + addr);
638 for (std::size_t i = 0; i < 16; ++i) {
639 if (i != 0 && i % 4 == 0)
642 outs() << hexdigit((Contents[addr + i] >> 4) & 0xF, true)
643 << hexdigit(Contents[addr + i] & 0xF, true);
649 for (std::size_t i = 0; i < 16 && addr + i < end; ++i) {
650 if (std::isprint(static_cast<unsigned char>(Contents[addr + i]) & 0xFF))
651 outs() << Contents[addr + i];
660 static void PrintCOFFSymbolTable(const COFFObjectFile *coff) {
661 const coff_file_header *header;
662 if (error(coff->getHeader(header))) return;
664 const coff_symbol *symbol = 0;
665 for (int i = 0, e = header->NumberOfSymbols; i != e; ++i) {
667 // Figure out which type of aux this is.
668 if (symbol->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC
669 && symbol->Value == 0) { // Section definition.
670 const coff_aux_section_definition *asd;
671 if (error(coff->getAuxSymbol<coff_aux_section_definition>(i, asd)))
674 << format("scnlen 0x%x nreloc %d nlnno %d checksum 0x%x "
675 , unsigned(asd->Length)
676 , unsigned(asd->NumberOfRelocations)
677 , unsigned(asd->NumberOfLinenumbers)
678 , unsigned(asd->CheckSum))
679 << format("assoc %d comdat %d\n"
680 , unsigned(asd->Number)
681 , unsigned(asd->Selection));
683 outs() << "AUX Unknown\n";
686 if (error(coff->getSymbol(i, symbol))) return;
687 if (error(coff->getSymbolName(symbol, name))) return;
688 outs() << "[" << format("%2d", i) << "]"
689 << "(sec " << format("%2d", int(symbol->SectionNumber)) << ")"
690 << "(fl 0x00)" // Flag bits, which COFF doesn't have.
691 << "(ty " << format("%3x", unsigned(symbol->Type)) << ")"
692 << "(scl " << format("%3x", unsigned(symbol->StorageClass)) << ") "
693 << "(nx " << unsigned(symbol->NumberOfAuxSymbols) << ") "
694 << "0x" << format("%08x", unsigned(symbol->Value)) << " "
696 aux_count = symbol->NumberOfAuxSymbols;
701 static void PrintSymbolTable(const ObjectFile *o) {
702 outs() << "SYMBOL TABLE:\n";
704 if (const COFFObjectFile *coff = dyn_cast<const COFFObjectFile>(o))
705 PrintCOFFSymbolTable(coff);
707 for (symbol_iterator si = o->symbol_begin(), se = o->symbol_end();
711 SymbolRef::Type Type;
713 uint32_t Flags = si->getFlags();
714 section_iterator Section = o->section_end();
715 if (error(si->getName(Name))) continue;
716 if (error(si->getAddress(Address))) continue;
717 if (error(si->getType(Type))) continue;
718 if (error(si->getSize(Size))) continue;
719 if (error(si->getSection(Section))) continue;
721 bool Global = Flags & SymbolRef::SF_Global;
722 bool Weak = Flags & SymbolRef::SF_Weak;
723 bool Absolute = Flags & SymbolRef::SF_Absolute;
725 if (Address == UnknownAddressOrSize)
727 if (Size == UnknownAddressOrSize)
730 if (Type != SymbolRef::ST_Unknown)
731 GlobLoc = Global ? 'g' : 'l';
732 char Debug = (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File)
735 if (Type == SymbolRef::ST_File)
737 else if (Type == SymbolRef::ST_Function)
740 const char *Fmt = o->getBytesInAddress() > 4 ? "%016" PRIx64 :
743 outs() << format(Fmt, Address) << " "
744 << GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' '
745 << (Weak ? 'w' : ' ') // Weak?
746 << ' ' // Constructor. Not supported yet.
747 << ' ' // Warning. Not supported yet.
748 << ' ' // Indirect reference to another symbol.
749 << Debug // Debugging (d) or dynamic (D) symbol.
750 << FileFunc // Name of function (F), file (f) or object (O).
754 else if (Section == o->section_end())
757 if (const MachOObjectFile *MachO =
758 dyn_cast<const MachOObjectFile>(o)) {
759 DataRefImpl DR = Section->getRawDataRefImpl();
760 StringRef SegmentName = MachO->getSectionFinalSegmentName(DR);
761 outs() << SegmentName << ",";
763 StringRef SectionName;
764 if (error(Section->getName(SectionName)))
766 outs() << SectionName;
769 << format("%08" PRIx64 " ", Size)
776 static void PrintUnwindInfo(const ObjectFile *o) {
777 outs() << "Unwind info:\n\n";
779 if (const COFFObjectFile *coff = dyn_cast<COFFObjectFile>(o)) {
780 printCOFFUnwindInfo(coff);
782 // TODO: Extract DWARF dump tool to objdump.
783 errs() << "This operation is only currently supported "
784 "for COFF object files.\n";
789 static void printPrivateFileHeader(const ObjectFile *o) {
791 printELFFileHeader(o);
792 } else if (o->isCOFF()) {
793 printCOFFFileHeader(o);
797 static void DumpObject(const ObjectFile *o) {
799 outs() << o->getFileName()
800 << ":\tfile format " << o->getFileFormatName() << "\n\n";
803 DisassembleObject(o, Relocations);
804 if (Relocations && !Disassemble)
807 PrintSectionHeaders(o);
809 PrintSectionContents(o);
815 printPrivateFileHeader(o);
818 /// @brief Dump each object file in \a a;
819 static void DumpArchive(const Archive *a) {
820 for (Archive::child_iterator i = a->child_begin(), e = a->child_end(); i != e;
822 std::unique_ptr<Binary> child;
823 if (error_code EC = i->getAsBinary(child)) {
824 // Ignore non-object files.
825 if (EC != object_error::invalid_file_type)
826 errs() << ToolName << ": '" << a->getFileName() << "': " << EC.message()
830 if (ObjectFile *o = dyn_cast<ObjectFile>(child.get()))
833 errs() << ToolName << ": '" << a->getFileName() << "': "
834 << "Unrecognized file type.\n";
838 /// @brief Open file and figure out how to dump it.
839 static void DumpInput(StringRef file) {
840 // If file isn't stdin, check that it exists.
841 if (file != "-" && !sys::fs::exists(file)) {
842 errs() << ToolName << ": '" << file << "': " << "No such file\n";
846 if (MachOOpt && Disassemble) {
847 DisassembleInputMachO(file);
851 // Attempt to open the binary.
852 ErrorOr<Binary *> BinaryOrErr = createBinary(file);
853 if (error_code EC = BinaryOrErr.getError()) {
854 errs() << ToolName << ": '" << file << "': " << EC.message() << ".\n";
857 std::unique_ptr<Binary> binary(BinaryOrErr.get());
859 if (Archive *a = dyn_cast<Archive>(binary.get()))
861 else if (ObjectFile *o = dyn_cast<ObjectFile>(binary.get()))
864 errs() << ToolName << ": '" << file << "': " << "Unrecognized file type.\n";
867 int main(int argc, char **argv) {
868 // Print a stack trace if we signal out.
869 sys::PrintStackTraceOnErrorSignal();
870 PrettyStackTraceProgram X(argc, argv);
871 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
873 // Initialize targets and assembly printers/parsers.
874 llvm::InitializeAllTargetInfos();
875 llvm::InitializeAllTargetMCs();
876 llvm::InitializeAllAsmParsers();
877 llvm::InitializeAllDisassemblers();
879 // Register the target printer for --version.
880 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
882 cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n");
883 TripleName = Triple::normalize(TripleName);
887 // Defaults to a.out if no filenames specified.
888 if (InputFilenames.size() == 0)
889 InputFilenames.push_back("a.out");
897 && !PrivateHeaders) {
898 cl::PrintHelpMessage();
902 std::for_each(InputFilenames.begin(), InputFilenames.end(),