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 (section_iterator I = Obj->section_begin(), E = Obj->section_end();
391 section_iterator Sec2 = I->getRelocatedSection();
392 if (Sec2 != Obj->section_end())
393 SectionRelocMap[*Sec2].push_back(*I);
396 for (section_iterator I = Obj->section_begin(), E = Obj->section_end();
399 if (error(I->isText(Text)))
404 uint64_t SectionAddr;
405 if (error(I->getAddress(SectionAddr)))
409 if (error(I->getSize(SectSize)))
412 // Make a list of all the symbols in this section.
413 std::vector<std::pair<uint64_t, StringRef> > Symbols;
414 for (symbol_iterator SI = Obj->symbol_begin(), SE = Obj->symbol_end();
417 if (!error(I->containsSymbol(*SI, contains)) && contains) {
419 if (error(SI->getAddress(Address)))
421 if (Address == UnknownAddressOrSize)
423 Address -= SectionAddr;
424 if (Address >= SectSize)
428 if (error(SI->getName(Name)))
430 Symbols.push_back(std::make_pair(Address, Name));
434 // Sort the symbols by address, just in case they didn't come in that way.
435 array_pod_sort(Symbols.begin(), Symbols.end());
437 // Make a list of all the relocations for this section.
438 std::vector<RelocationRef> Rels;
440 SmallVectorImpl<SectionRef> *RelocSecs = &SectionRelocMap[*I];
441 for (SmallVectorImpl<SectionRef>::iterator RelocSec = RelocSecs->begin(),
442 E = RelocSecs->end();
443 RelocSec != E; ++RelocSec) {
444 for (relocation_iterator RI = RelocSec->relocation_begin(),
445 RE = RelocSec->relocation_end();
451 // Sort relocations by address.
452 std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
454 StringRef SegmentName = "";
455 if (const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(Obj)) {
456 DataRefImpl DR = I->getRawDataRefImpl();
457 SegmentName = MachO->getSectionFinalSegmentName(DR);
460 if (error(I->getName(name)))
462 outs() << "Disassembly of section ";
463 if (!SegmentName.empty())
464 outs() << SegmentName << ",";
465 outs() << name << ':';
467 // If the section has no symbols just insert a dummy one and disassemble
468 // the whole section.
470 Symbols.push_back(std::make_pair(0, name));
473 SmallString<40> Comments;
474 raw_svector_ostream CommentStream(Comments);
477 if (error(I->getContents(Bytes)))
479 StringRefMemoryObject memoryObject(Bytes, SectionAddr);
483 std::vector<RelocationRef>::const_iterator rel_cur = Rels.begin();
484 std::vector<RelocationRef>::const_iterator rel_end = Rels.end();
485 // Disassemble symbol by symbol.
486 for (unsigned si = 0, se = Symbols.size(); si != se; ++si) {
487 uint64_t Start = Symbols[si].first;
489 // The end is either the size of the section or the beginning of the next
493 // Make sure this symbol takes up space.
494 else if (Symbols[si + 1].first != Start)
495 End = Symbols[si + 1].first - 1;
497 // This symbol has the same address as the next symbol. Skip it.
500 outs() << '\n' << Symbols[si].second << ":\n";
503 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
505 raw_ostream &DebugOut = nulls();
508 for (Index = Start; Index < End; Index += Size) {
511 if (DisAsm->getInstruction(Inst, Size, memoryObject,
513 DebugOut, CommentStream)) {
514 outs() << format("%8" PRIx64 ":", SectionAddr + Index);
515 if (!NoShowRawInsn) {
517 DumpBytes(StringRef(Bytes.data() + Index, Size));
519 IP->printInst(&Inst, outs(), "");
520 outs() << CommentStream.str();
524 errs() << ToolName << ": warning: invalid instruction encoding\n";
526 Size = 1; // skip illegible bytes
529 // Print relocation for instruction.
530 while (rel_cur != rel_end) {
533 SmallString<16> name;
536 // If this relocation is hidden, skip it.
537 if (error(rel_cur->getHidden(hidden))) goto skip_print_rel;
538 if (hidden) goto skip_print_rel;
540 if (error(rel_cur->getOffset(addr))) goto skip_print_rel;
541 // Stop when rel_cur's address is past the current instruction.
542 if (addr >= Index + Size) break;
543 if (error(rel_cur->getTypeName(name))) goto skip_print_rel;
544 if (error(rel_cur->getValueString(val))) goto skip_print_rel;
546 outs() << format("\t\t\t%8" PRIx64 ": ", SectionAddr + addr) << name
547 << "\t" << val << "\n";
557 static void PrintRelocations(const ObjectFile *o) {
558 for (section_iterator si = o->section_begin(), se = o->section_end();
560 if (si->relocation_begin() == si->relocation_end())
563 if (error(si->getName(secname))) continue;
564 outs() << "RELOCATION RECORDS FOR [" << secname << "]:\n";
565 for (relocation_iterator ri = si->relocation_begin(),
566 re = si->relocation_end();
570 SmallString<32> relocname;
571 SmallString<32> valuestr;
572 if (error(ri->getHidden(hidden))) continue;
573 if (hidden) continue;
574 if (error(ri->getTypeName(relocname))) continue;
575 if (error(ri->getOffset(address))) continue;
576 if (error(ri->getValueString(valuestr))) continue;
577 outs() << address << " " << relocname << " " << valuestr << "\n";
583 static void PrintSectionHeaders(const ObjectFile *o) {
584 outs() << "Sections:\n"
585 "Idx Name Size Address Type\n";
587 for (section_iterator si = o->section_begin(), se = o->section_end();
590 if (error(si->getName(Name)))
593 if (error(si->getAddress(Address))) return;
595 if (error(si->getSize(Size))) return;
596 bool Text, Data, BSS;
597 if (error(si->isText(Text))) return;
598 if (error(si->isData(Data))) return;
599 if (error(si->isBSS(BSS))) return;
600 std::string Type = (std::string(Text ? "TEXT " : "") +
601 (Data ? "DATA " : "") + (BSS ? "BSS" : ""));
602 outs() << format("%3d %-13s %08" PRIx64 " %016" PRIx64 " %s\n",
603 i, Name.str().c_str(), Size, Address, Type.c_str());
608 static void PrintSectionContents(const ObjectFile *o) {
610 for (section_iterator si = o->section_begin(), se = o->section_end();
616 if (error(si->getName(Name))) continue;
617 if (error(si->getContents(Contents))) continue;
618 if (error(si->getAddress(BaseAddr))) continue;
619 if (error(si->isBSS(BSS))) continue;
621 outs() << "Contents of section " << Name << ":\n";
623 outs() << format("<skipping contents of bss section at [%04" PRIx64
624 ", %04" PRIx64 ")>\n", BaseAddr,
625 BaseAddr + Contents.size());
629 // Dump out the content as hex and printable ascii characters.
630 for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) {
631 outs() << format(" %04" PRIx64 " ", BaseAddr + addr);
633 for (std::size_t i = 0; i < 16; ++i) {
634 if (i != 0 && i % 4 == 0)
637 outs() << hexdigit((Contents[addr + i] >> 4) & 0xF, true)
638 << hexdigit(Contents[addr + i] & 0xF, true);
644 for (std::size_t i = 0; i < 16 && addr + i < end; ++i) {
645 if (std::isprint(static_cast<unsigned char>(Contents[addr + i]) & 0xFF))
646 outs() << Contents[addr + i];
655 static void PrintCOFFSymbolTable(const COFFObjectFile *coff) {
656 const coff_file_header *header;
657 if (error(coff->getHeader(header))) return;
659 const coff_symbol *symbol = 0;
660 for (int i = 0, e = header->NumberOfSymbols; i != e; ++i) {
662 // Figure out which type of aux this is.
663 if (symbol->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC
664 && symbol->Value == 0) { // Section definition.
665 const coff_aux_section_definition *asd;
666 if (error(coff->getAuxSymbol<coff_aux_section_definition>(i, asd)))
669 << format("scnlen 0x%x nreloc %d nlnno %d checksum 0x%x "
670 , unsigned(asd->Length)
671 , unsigned(asd->NumberOfRelocations)
672 , unsigned(asd->NumberOfLinenumbers)
673 , unsigned(asd->CheckSum))
674 << format("assoc %d comdat %d\n"
675 , unsigned(asd->Number)
676 , unsigned(asd->Selection));
678 outs() << "AUX Unknown\n";
681 if (error(coff->getSymbol(i, symbol))) return;
682 if (error(coff->getSymbolName(symbol, name))) return;
683 outs() << "[" << format("%2d", i) << "]"
684 << "(sec " << format("%2d", int(symbol->SectionNumber)) << ")"
685 << "(fl 0x00)" // Flag bits, which COFF doesn't have.
686 << "(ty " << format("%3x", unsigned(symbol->Type)) << ")"
687 << "(scl " << format("%3x", unsigned(symbol->StorageClass)) << ") "
688 << "(nx " << unsigned(symbol->NumberOfAuxSymbols) << ") "
689 << "0x" << format("%08x", unsigned(symbol->Value)) << " "
691 aux_count = symbol->NumberOfAuxSymbols;
696 static void PrintSymbolTable(const ObjectFile *o) {
697 outs() << "SYMBOL TABLE:\n";
699 if (const COFFObjectFile *coff = dyn_cast<const COFFObjectFile>(o))
700 PrintCOFFSymbolTable(coff);
702 for (symbol_iterator si = o->symbol_begin(), se = o->symbol_end();
706 SymbolRef::Type Type;
708 uint32_t Flags = si->getFlags();
709 section_iterator Section = o->section_end();
710 if (error(si->getName(Name))) continue;
711 if (error(si->getAddress(Address))) continue;
712 if (error(si->getType(Type))) continue;
713 if (error(si->getSize(Size))) continue;
714 if (error(si->getSection(Section))) continue;
716 bool Global = Flags & SymbolRef::SF_Global;
717 bool Weak = Flags & SymbolRef::SF_Weak;
718 bool Absolute = Flags & SymbolRef::SF_Absolute;
720 if (Address == UnknownAddressOrSize)
722 if (Size == UnknownAddressOrSize)
725 if (Type != SymbolRef::ST_Unknown)
726 GlobLoc = Global ? 'g' : 'l';
727 char Debug = (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File)
730 if (Type == SymbolRef::ST_File)
732 else if (Type == SymbolRef::ST_Function)
735 const char *Fmt = o->getBytesInAddress() > 4 ? "%016" PRIx64 :
738 outs() << format(Fmt, Address) << " "
739 << GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' '
740 << (Weak ? 'w' : ' ') // Weak?
741 << ' ' // Constructor. Not supported yet.
742 << ' ' // Warning. Not supported yet.
743 << ' ' // Indirect reference to another symbol.
744 << Debug // Debugging (d) or dynamic (D) symbol.
745 << FileFunc // Name of function (F), file (f) or object (O).
749 else if (Section == o->section_end())
752 if (const MachOObjectFile *MachO =
753 dyn_cast<const MachOObjectFile>(o)) {
754 DataRefImpl DR = Section->getRawDataRefImpl();
755 StringRef SegmentName = MachO->getSectionFinalSegmentName(DR);
756 outs() << SegmentName << ",";
758 StringRef SectionName;
759 if (error(Section->getName(SectionName)))
761 outs() << SectionName;
764 << format("%08" PRIx64 " ", Size)
771 static void PrintUnwindInfo(const ObjectFile *o) {
772 outs() << "Unwind info:\n\n";
774 if (const COFFObjectFile *coff = dyn_cast<COFFObjectFile>(o)) {
775 printCOFFUnwindInfo(coff);
777 // TODO: Extract DWARF dump tool to objdump.
778 errs() << "This operation is only currently supported "
779 "for COFF object files.\n";
784 static void printPrivateFileHeader(const ObjectFile *o) {
786 printELFFileHeader(o);
787 } else if (o->isCOFF()) {
788 printCOFFFileHeader(o);
792 static void DumpObject(const ObjectFile *o) {
794 outs() << o->getFileName()
795 << ":\tfile format " << o->getFileFormatName() << "\n\n";
798 DisassembleObject(o, Relocations);
799 if (Relocations && !Disassemble)
802 PrintSectionHeaders(o);
804 PrintSectionContents(o);
810 printPrivateFileHeader(o);
813 /// @brief Dump each object file in \a a;
814 static void DumpArchive(const Archive *a) {
815 for (Archive::child_iterator i = a->child_begin(), e = a->child_end(); i != e;
817 std::unique_ptr<Binary> child;
818 if (error_code EC = i->getAsBinary(child)) {
819 // Ignore non-object files.
820 if (EC != object_error::invalid_file_type)
821 errs() << ToolName << ": '" << a->getFileName() << "': " << EC.message()
825 if (ObjectFile *o = dyn_cast<ObjectFile>(child.get()))
828 errs() << ToolName << ": '" << a->getFileName() << "': "
829 << "Unrecognized file type.\n";
833 /// @brief Open file and figure out how to dump it.
834 static void DumpInput(StringRef file) {
835 // If file isn't stdin, check that it exists.
836 if (file != "-" && !sys::fs::exists(file)) {
837 errs() << ToolName << ": '" << file << "': " << "No such file\n";
841 if (MachOOpt && Disassemble) {
842 DisassembleInputMachO(file);
846 // Attempt to open the binary.
847 ErrorOr<Binary *> BinaryOrErr = createBinary(file);
848 if (error_code EC = BinaryOrErr.getError()) {
849 errs() << ToolName << ": '" << file << "': " << EC.message() << ".\n";
852 std::unique_ptr<Binary> binary(BinaryOrErr.get());
854 if (Archive *a = dyn_cast<Archive>(binary.get()))
856 else if (ObjectFile *o = dyn_cast<ObjectFile>(binary.get()))
859 errs() << ToolName << ": '" << file << "': " << "Unrecognized file type.\n";
862 int main(int argc, char **argv) {
863 // Print a stack trace if we signal out.
864 sys::PrintStackTraceOnErrorSignal();
865 PrettyStackTraceProgram X(argc, argv);
866 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
868 // Initialize targets and assembly printers/parsers.
869 llvm::InitializeAllTargetInfos();
870 llvm::InitializeAllTargetMCs();
871 llvm::InitializeAllAsmParsers();
872 llvm::InitializeAllDisassemblers();
874 // Register the target printer for --version.
875 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
877 cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n");
878 TripleName = Triple::normalize(TripleName);
882 // Defaults to a.out if no filenames specified.
883 if (InputFilenames.size() == 0)
884 InputFilenames.push_back("a.out");
892 && !PrivateHeaders) {
893 cl::PrintHelpMessage();
897 std::for_each(InputFilenames.begin(), InputFilenames.end(),