| //===-- llvm-objdump.cpp - Object file dumping utility for llvm -----------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This program is a utility that works like binutils "objdump", that is, it |
| // dumps out a plethora of information about an object file depending on the |
| // flags. |
| // |
| // The flags and output of this program should be near identical to those of |
| // binutils objdump. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm-objdump.h" |
| #include "llvm/ADT/Optional.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/StringSet.h" |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/CodeGen/FaultMaps.h" |
| #include "llvm/DebugInfo/DWARF/DWARFContext.h" |
| #include "llvm/DebugInfo/Symbolize/Symbolize.h" |
| #include "llvm/Demangle/Demangle.h" |
| #include "llvm/MC/MCAsmInfo.h" |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/MC/MCDisassembler/MCDisassembler.h" |
| #include "llvm/MC/MCDisassembler/MCRelocationInfo.h" |
| #include "llvm/MC/MCInst.h" |
| #include "llvm/MC/MCInstPrinter.h" |
| #include "llvm/MC/MCInstrAnalysis.h" |
| #include "llvm/MC/MCInstrInfo.h" |
| #include "llvm/MC/MCObjectFileInfo.h" |
| #include "llvm/MC/MCRegisterInfo.h" |
| #include "llvm/MC/MCSubtargetInfo.h" |
| #include "llvm/Object/Archive.h" |
| #include "llvm/Object/COFF.h" |
| #include "llvm/Object/COFFImportFile.h" |
| #include "llvm/Object/ELFObjectFile.h" |
| #include "llvm/Object/MachO.h" |
| #include "llvm/Object/MachOUniversal.h" |
| #include "llvm/Object/ObjectFile.h" |
| #include "llvm/Object/Wasm.h" |
| #include "llvm/Support/Casting.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/Debug.h" |
| #include "llvm/Support/Errc.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Format.h" |
| #include "llvm/Support/GraphWriter.h" |
| #include "llvm/Support/Host.h" |
| #include "llvm/Support/InitLLVM.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/SourceMgr.h" |
| #include "llvm/Support/StringSaver.h" |
| #include "llvm/Support/TargetRegistry.h" |
| #include "llvm/Support/TargetSelect.h" |
| #include "llvm/Support/WithColor.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <algorithm> |
| #include <cctype> |
| #include <cstring> |
| #include <system_error> |
| #include <unordered_map> |
| #include <utility> |
| |
| using namespace llvm; |
| using namespace object; |
| |
| cl::opt<unsigned long long> AdjustVMA( |
| "adjust-vma", |
| cl::desc("Increase the displayed address by the specified offset"), |
| cl::value_desc("offset"), cl::init(0)); |
| |
| cl::opt<bool> |
| llvm::AllHeaders("all-headers", |
| cl::desc("Display all available header information")); |
| static cl::alias AllHeadersShort("x", cl::desc("Alias for --all-headers"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(AllHeaders)); |
| |
| static cl::list<std::string> |
| InputFilenames(cl::Positional, cl::desc("<input object files>"),cl::ZeroOrMore); |
| |
| cl::opt<bool> |
| llvm::Disassemble("disassemble", |
| cl::desc("Display assembler mnemonics for the machine instructions")); |
| static cl::alias Disassembled("d", cl::desc("Alias for --disassemble"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(Disassemble)); |
| |
| cl::opt<bool> |
| llvm::DisassembleAll("disassemble-all", |
| cl::desc("Display assembler mnemonics for the machine instructions")); |
| static cl::alias DisassembleAlld("D", cl::desc("Alias for --disassemble-all"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(DisassembleAll)); |
| |
| cl::opt<bool> llvm::Demangle("demangle", cl::desc("Demangle symbols names"), |
| cl::init(false)); |
| |
| static cl::alias DemangleShort("C", cl::desc("Alias for --demangle"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(llvm::Demangle)); |
| |
| static cl::list<std::string> |
| DisassembleFunctions("disassemble-functions", |
| cl::CommaSeparated, |
| cl::desc("List of functions to disassemble")); |
| static StringSet<> DisasmFuncsSet; |
| |
| cl::opt<bool> |
| llvm::Relocations("reloc", |
| cl::desc("Display the relocation entries in the file")); |
| static cl::alias RelocationsShort("r", cl::desc("Alias for --reloc"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(llvm::Relocations)); |
| |
| cl::opt<bool> |
| llvm::DynamicRelocations("dynamic-reloc", |
| cl::desc("Display the dynamic relocation entries in the file")); |
| static cl::alias DynamicRelocationsd("R", cl::desc("Alias for --dynamic-reloc"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(DynamicRelocations)); |
| |
| cl::opt<bool> |
| llvm::SectionContents("full-contents", |
| cl::desc("Display the content of each section")); |
| static cl::alias SectionContentsShort("s", |
| cl::desc("Alias for --full-contents"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(SectionContents)); |
| |
| cl::opt<bool> llvm::SymbolTable("syms", cl::desc("Display the symbol table")); |
| static cl::alias SymbolTableShort("t", cl::desc("Alias for --syms"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(llvm::SymbolTable)); |
| |
| cl::opt<bool> |
| llvm::ExportsTrie("exports-trie", cl::desc("Display mach-o exported symbols")); |
| |
| cl::opt<bool> |
| llvm::Rebase("rebase", cl::desc("Display mach-o rebasing info")); |
| |
| cl::opt<bool> |
| llvm::Bind("bind", cl::desc("Display mach-o binding info")); |
| |
| cl::opt<bool> |
| llvm::LazyBind("lazy-bind", cl::desc("Display mach-o lazy binding info")); |
| |
| cl::opt<bool> |
| llvm::WeakBind("weak-bind", cl::desc("Display mach-o weak binding info")); |
| |
| cl::opt<bool> |
| llvm::RawClangAST("raw-clang-ast", |
| cl::desc("Dump the raw binary contents of the clang AST section")); |
| |
| static cl::opt<bool> |
| MachOOpt("macho", cl::desc("Use MachO specific object file parser")); |
| static cl::alias MachOm("m", cl::desc("Alias for --macho"), cl::NotHidden, |
| cl::Grouping, cl::aliasopt(MachOOpt)); |
| |
| cl::opt<std::string> |
| llvm::TripleName("triple", cl::desc("Target triple to disassemble for, " |
| "see -version for available targets")); |
| |
| cl::opt<std::string> |
| llvm::MCPU("mcpu", |
| cl::desc("Target a specific cpu type (-mcpu=help for details)"), |
| cl::value_desc("cpu-name"), |
| cl::init("")); |
| |
| cl::opt<std::string> |
| llvm::ArchName("arch-name", cl::desc("Target arch to disassemble for, " |
| "see -version for available targets")); |
| |
| cl::opt<bool> |
| llvm::SectionHeaders("section-headers", cl::desc("Display summaries of the " |
| "headers for each section.")); |
| static cl::alias SectionHeadersShort("headers", |
| cl::desc("Alias for --section-headers"), |
| cl::NotHidden, |
| cl::aliasopt(SectionHeaders)); |
| static cl::alias SectionHeadersShorter("h", |
| cl::desc("Alias for --section-headers"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(SectionHeaders)); |
| |
| static cl::opt<bool> |
| ShowLMA("show-lma", |
| cl::desc("Display LMA column when dumping ELF section headers")); |
| |
| cl::list<std::string> |
| llvm::FilterSections("section", cl::desc("Operate on the specified sections only. " |
| "With -macho dump segment,section")); |
| cl::alias static FilterSectionsj("j", cl::desc("Alias for --section"), |
| cl::NotHidden, cl::Grouping, cl::Prefix, |
| cl::aliasopt(llvm::FilterSections)); |
| |
| cl::list<std::string> |
| llvm::MAttrs("mattr", |
| cl::CommaSeparated, |
| cl::desc("Target specific attributes"), |
| cl::value_desc("a1,+a2,-a3,...")); |
| |
| cl::opt<bool> |
| llvm::NoShowRawInsn("no-show-raw-insn", cl::desc("When disassembling " |
| "instructions, do not print " |
| "the instruction bytes.")); |
| cl::opt<bool> |
| llvm::NoLeadingAddr("no-leading-addr", cl::desc("Print no leading address")); |
| |
| cl::opt<bool> |
| llvm::UnwindInfo("unwind-info", cl::desc("Display unwind information")); |
| |
| static cl::alias UnwindInfoShort("u", cl::desc("Alias for --unwind-info"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(UnwindInfo)); |
| |
| cl::opt<bool> |
| llvm::PrivateHeaders("private-headers", |
| cl::desc("Display format specific file headers")); |
| |
| cl::opt<bool> |
| llvm::FirstPrivateHeader("private-header", |
| cl::desc("Display only the first format specific file " |
| "header")); |
| |
| static cl::alias PrivateHeadersShort("p", |
| cl::desc("Alias for --private-headers"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(PrivateHeaders)); |
| |
| cl::opt<bool> llvm::FileHeaders( |
| "file-headers", |
| cl::desc("Display the contents of the overall file header")); |
| |
| static cl::alias FileHeadersShort("f", cl::desc("Alias for --file-headers"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(FileHeaders)); |
| |
| cl::opt<bool> |
| llvm::ArchiveHeaders("archive-headers", |
| cl::desc("Display archive header information")); |
| |
| cl::alias ArchiveHeadersShort("a", cl::desc("Alias for --archive-headers"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(ArchiveHeaders)); |
| |
| cl::opt<bool> |
| llvm::PrintImmHex("print-imm-hex", |
| cl::desc("Use hex format for immediate values")); |
| |
| cl::opt<bool> PrintFaultMaps("fault-map-section", |
| cl::desc("Display contents of faultmap section")); |
| |
| cl::opt<DIDumpType> llvm::DwarfDumpType( |
| "dwarf", cl::init(DIDT_Null), cl::desc("Dump of dwarf debug sections:"), |
| cl::values(clEnumValN(DIDT_DebugFrame, "frames", ".debug_frame"))); |
| |
| cl::opt<bool> PrintSource( |
| "source", |
| cl::desc( |
| "Display source inlined with disassembly. Implies disassemble object")); |
| |
| cl::alias PrintSourceShort("S", cl::desc("Alias for -source"), cl::NotHidden, |
| cl::Grouping, cl::aliasopt(PrintSource)); |
| |
| cl::opt<bool> PrintLines("line-numbers", |
| cl::desc("Display source line numbers with " |
| "disassembly. Implies disassemble object")); |
| |
| cl::alias PrintLinesShort("l", cl::desc("Alias for -line-numbers"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(PrintLines)); |
| |
| cl::opt<unsigned long long> |
| StartAddress("start-address", cl::desc("Disassemble beginning at address"), |
| cl::value_desc("address"), cl::init(0)); |
| cl::opt<unsigned long long> |
| StopAddress("stop-address", |
| cl::desc("Stop disassembly at address"), |
| cl::value_desc("address"), cl::init(UINT64_MAX)); |
| |
| cl::opt<bool> DisassembleZeroes( |
| "disassemble-zeroes", |
| cl::desc("Do not skip blocks of zeroes when disassembling")); |
| cl::alias DisassembleZeroesShort("z", |
| cl::desc("Alias for --disassemble-zeroes"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(DisassembleZeroes)); |
| |
| static cl::list<std::string> |
| DisassemblerOptions("disassembler-options", |
| cl::desc("Pass target specific disassembler options"), |
| cl::value_desc("options"), cl::CommaSeparated); |
| static cl::alias |
| DisassemblerOptionsShort("M", cl::desc("Alias for --disassembler-options"), |
| cl::NotHidden, cl::Grouping, cl::Prefix, |
| cl::CommaSeparated, |
| cl::aliasopt(DisassemblerOptions)); |
| |
| static StringRef ToolName; |
| |
| typedef std::vector<std::tuple<uint64_t, StringRef, uint8_t>> SectionSymbolsTy; |
| |
| SectionFilter llvm::ToolSectionFilter(llvm::object::ObjectFile const &O) { |
| return SectionFilter( |
| [](llvm::object::SectionRef const &S) { |
| if (FilterSections.empty()) |
| return true; |
| llvm::StringRef String; |
| std::error_code error = S.getName(String); |
| if (error) |
| return false; |
| return is_contained(FilterSections, String); |
| }, |
| O); |
| } |
| |
| void llvm::error(std::error_code EC) { |
| if (!EC) |
| return; |
| WithColor::error(errs(), ToolName) |
| << "reading file: " << EC.message() << ".\n"; |
| errs().flush(); |
| exit(1); |
| } |
| |
| LLVM_ATTRIBUTE_NORETURN void llvm::error(Twine Message) { |
| WithColor::error(errs(), ToolName) << Message << ".\n"; |
| errs().flush(); |
| exit(1); |
| } |
| |
| void llvm::warn(StringRef Message) { |
| WithColor::warning(errs(), ToolName) << Message << ".\n"; |
| errs().flush(); |
| } |
| |
| LLVM_ATTRIBUTE_NORETURN void llvm::report_error(StringRef File, |
| Twine Message) { |
| WithColor::error(errs(), ToolName) |
| << "'" << File << "': " << Message << ".\n"; |
| exit(1); |
| } |
| |
| LLVM_ATTRIBUTE_NORETURN void llvm::report_error(StringRef File, |
| std::error_code EC) { |
| assert(EC); |
| WithColor::error(errs(), ToolName) |
| << "'" << File << "': " << EC.message() << ".\n"; |
| exit(1); |
| } |
| |
| LLVM_ATTRIBUTE_NORETURN void llvm::report_error(StringRef File, |
| llvm::Error E) { |
| assert(E); |
| std::string Buf; |
| raw_string_ostream OS(Buf); |
| logAllUnhandledErrors(std::move(E), OS); |
| OS.flush(); |
| WithColor::error(errs(), ToolName) << "'" << File << "': " << Buf; |
| exit(1); |
| } |
| |
| LLVM_ATTRIBUTE_NORETURN void llvm::report_error(StringRef ArchiveName, |
| StringRef FileName, |
| llvm::Error E, |
| StringRef ArchitectureName) { |
| assert(E); |
| WithColor::error(errs(), ToolName); |
| if (ArchiveName != "") |
| errs() << ArchiveName << "(" << FileName << ")"; |
| else |
| errs() << "'" << FileName << "'"; |
| if (!ArchitectureName.empty()) |
| errs() << " (for architecture " << ArchitectureName << ")"; |
| std::string Buf; |
| raw_string_ostream OS(Buf); |
| logAllUnhandledErrors(std::move(E), OS); |
| OS.flush(); |
| errs() << ": " << Buf; |
| exit(1); |
| } |
| |
| LLVM_ATTRIBUTE_NORETURN void llvm::report_error(StringRef ArchiveName, |
| const object::Archive::Child &C, |
| llvm::Error E, |
| StringRef ArchitectureName) { |
| Expected<StringRef> NameOrErr = C.getName(); |
| // TODO: if we have a error getting the name then it would be nice to print |
| // the index of which archive member this is and or its offset in the |
| // archive instead of "???" as the name. |
| if (!NameOrErr) { |
| consumeError(NameOrErr.takeError()); |
| llvm::report_error(ArchiveName, "???", std::move(E), ArchitectureName); |
| } else |
| llvm::report_error(ArchiveName, NameOrErr.get(), std::move(E), |
| ArchitectureName); |
| } |
| |
| static const Target *getTarget(const ObjectFile *Obj = nullptr) { |
| // Figure out the target triple. |
| llvm::Triple TheTriple("unknown-unknown-unknown"); |
| if (TripleName.empty()) { |
| if (Obj) |
| TheTriple = Obj->makeTriple(); |
| } else { |
| TheTriple.setTriple(Triple::normalize(TripleName)); |
| |
| // Use the triple, but also try to combine with ARM build attributes. |
| if (Obj) { |
| auto Arch = Obj->getArch(); |
| if (Arch == Triple::arm || Arch == Triple::armeb) |
| Obj->setARMSubArch(TheTriple); |
| } |
| } |
| |
| // Get the target specific parser. |
| std::string Error; |
| const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple, |
| Error); |
| if (!TheTarget) { |
| if (Obj) |
| report_error(Obj->getFileName(), "can't find target: " + Error); |
| else |
| error("can't find target: " + Error); |
| } |
| |
| // Update the triple name and return the found target. |
| TripleName = TheTriple.getTriple(); |
| return TheTarget; |
| } |
| |
| bool llvm::isRelocAddressLess(RelocationRef A, RelocationRef B) { |
| return A.getOffset() < B.getOffset(); |
| } |
| |
| static std::error_code getRelocationValueString(const RelocationRef &Rel, |
| SmallVectorImpl<char> &Result) { |
| const ObjectFile *Obj = Rel.getObject(); |
| if (auto *ELF = dyn_cast<ELFObjectFileBase>(Obj)) |
| return getELFRelocationValueString(ELF, Rel, Result); |
| if (auto *COFF = dyn_cast<COFFObjectFile>(Obj)) |
| return getCOFFRelocationValueString(COFF, Rel, Result); |
| if (auto *Wasm = dyn_cast<WasmObjectFile>(Obj)) |
| return getWasmRelocationValueString(Wasm, Rel, Result); |
| if (auto *MachO = dyn_cast<MachOObjectFile>(Obj)) |
| return getMachORelocationValueString(MachO, Rel, Result); |
| llvm_unreachable("unknown object file format"); |
| } |
| |
| /// Indicates whether this relocation should hidden when listing |
| /// relocations, usually because it is the trailing part of a multipart |
| /// relocation that will be printed as part of the leading relocation. |
| static bool getHidden(RelocationRef RelRef) { |
| auto *MachO = dyn_cast<MachOObjectFile>(RelRef.getObject()); |
| if (!MachO) |
| return false; |
| |
| unsigned Arch = MachO->getArch(); |
| DataRefImpl Rel = RelRef.getRawDataRefImpl(); |
| uint64_t Type = MachO->getRelocationType(Rel); |
| |
| // On arches that use the generic relocations, GENERIC_RELOC_PAIR |
| // is always hidden. |
| if (Arch == Triple::x86 || Arch == Triple::arm || Arch == Triple::ppc) |
| return Type == MachO::GENERIC_RELOC_PAIR; |
| |
| if (Arch == Triple::x86_64) { |
| // On x86_64, X86_64_RELOC_UNSIGNED is hidden only when it follows |
| // an X86_64_RELOC_SUBTRACTOR. |
| if (Type == MachO::X86_64_RELOC_UNSIGNED && Rel.d.a > 0) { |
| DataRefImpl RelPrev = Rel; |
| RelPrev.d.a--; |
| uint64_t PrevType = MachO->getRelocationType(RelPrev); |
| if (PrevType == MachO::X86_64_RELOC_SUBTRACTOR) |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| namespace { |
| class SourcePrinter { |
| protected: |
| DILineInfo OldLineInfo; |
| const ObjectFile *Obj = nullptr; |
| std::unique_ptr<symbolize::LLVMSymbolizer> Symbolizer; |
| // File name to file contents of source |
| std::unordered_map<std::string, std::unique_ptr<MemoryBuffer>> SourceCache; |
| // Mark the line endings of the cached source |
| std::unordered_map<std::string, std::vector<StringRef>> LineCache; |
| |
| private: |
| bool cacheSource(const DILineInfo& LineInfoFile); |
| |
| public: |
| SourcePrinter() = default; |
| SourcePrinter(const ObjectFile *Obj, StringRef DefaultArch) : Obj(Obj) { |
| symbolize::LLVMSymbolizer::Options SymbolizerOpts( |
| DILineInfoSpecifier::FunctionNameKind::None, true, false, false, |
| DefaultArch); |
| Symbolizer.reset(new symbolize::LLVMSymbolizer(SymbolizerOpts)); |
| } |
| virtual ~SourcePrinter() = default; |
| virtual void printSourceLine(raw_ostream &OS, |
| object::SectionedAddress Address, |
| StringRef Delimiter = "; "); |
| }; |
| |
| bool SourcePrinter::cacheSource(const DILineInfo &LineInfo) { |
| std::unique_ptr<MemoryBuffer> Buffer; |
| if (LineInfo.Source) { |
| Buffer = MemoryBuffer::getMemBuffer(*LineInfo.Source); |
| } else { |
| auto BufferOrError = MemoryBuffer::getFile(LineInfo.FileName); |
| if (!BufferOrError) |
| return false; |
| Buffer = std::move(*BufferOrError); |
| } |
| // Chomp the file to get lines |
| size_t BufferSize = Buffer->getBufferSize(); |
| const char *BufferStart = Buffer->getBufferStart(); |
| for (const char *Start = BufferStart, *End = BufferStart; |
| End < BufferStart + BufferSize; End++) |
| if (*End == '\n' || End == BufferStart + BufferSize - 1 || |
| (*End == '\r' && *(End + 1) == '\n')) { |
| LineCache[LineInfo.FileName].push_back(StringRef(Start, End - Start)); |
| if (*End == '\r') |
| End++; |
| Start = End + 1; |
| } |
| SourceCache[LineInfo.FileName] = std::move(Buffer); |
| return true; |
| } |
| |
| void SourcePrinter::printSourceLine(raw_ostream &OS, |
| object::SectionedAddress Address, |
| StringRef Delimiter) { |
| if (!Symbolizer) |
| return; |
| DILineInfo LineInfo = DILineInfo(); |
| auto ExpectecLineInfo = |
| Symbolizer->symbolizeCode(Obj->getFileName(), Address); |
| if (!ExpectecLineInfo) |
| consumeError(ExpectecLineInfo.takeError()); |
| else |
| LineInfo = *ExpectecLineInfo; |
| |
| if ((LineInfo.FileName == "<invalid>") || OldLineInfo.Line == LineInfo.Line || |
| LineInfo.Line == 0) |
| return; |
| |
| if (PrintLines) |
| OS << Delimiter << LineInfo.FileName << ":" << LineInfo.Line << "\n"; |
| if (PrintSource) { |
| if (SourceCache.find(LineInfo.FileName) == SourceCache.end()) |
| if (!cacheSource(LineInfo)) |
| return; |
| auto FileBuffer = SourceCache.find(LineInfo.FileName); |
| if (FileBuffer != SourceCache.end()) { |
| auto LineBuffer = LineCache.find(LineInfo.FileName); |
| if (LineBuffer != LineCache.end()) { |
| if (LineInfo.Line > LineBuffer->second.size()) |
| return; |
| // Vector begins at 0, line numbers are non-zero |
| OS << Delimiter << LineBuffer->second[LineInfo.Line - 1].ltrim() |
| << "\n"; |
| } |
| } |
| } |
| OldLineInfo = LineInfo; |
| } |
| |
| static bool isArmElf(const ObjectFile *Obj) { |
| return (Obj->isELF() && |
| (Obj->getArch() == Triple::aarch64 || |
| Obj->getArch() == Triple::aarch64_be || |
| Obj->getArch() == Triple::arm || Obj->getArch() == Triple::armeb || |
| Obj->getArch() == Triple::thumb || |
| Obj->getArch() == Triple::thumbeb)); |
| } |
| |
| static void printRelocation(const RelocationRef &Rel, uint64_t Address, |
| uint8_t AddrSize) { |
| StringRef Fmt = |
| AddrSize > 4 ? "\t\t%016" PRIx64 ": " : "\t\t\t%08" PRIx64 ": "; |
| SmallString<16> Name; |
| SmallString<32> Val; |
| Rel.getTypeName(Name); |
| error(getRelocationValueString(Rel, Val)); |
| outs() << format(Fmt.data(), Address) << Name << "\t" << Val << "\n"; |
| } |
| |
| class PrettyPrinter { |
| public: |
| virtual ~PrettyPrinter() = default; |
| virtual void printInst(MCInstPrinter &IP, const MCInst *MI, |
| ArrayRef<uint8_t> Bytes, |
| object::SectionedAddress Address, raw_ostream &OS, |
| StringRef Annot, MCSubtargetInfo const &STI, |
| SourcePrinter *SP, |
| std::vector<RelocationRef> *Rels = nullptr) { |
| if (SP && (PrintSource || PrintLines)) |
| SP->printSourceLine(OS, Address); |
| if (!NoLeadingAddr) |
| OS << format("%8" PRIx64 ":", Address.Address); |
| if (!NoShowRawInsn) { |
| OS << "\t"; |
| dumpBytes(Bytes, OS); |
| } |
| if (MI) |
| IP.printInst(MI, OS, "", STI); |
| else |
| OS << " <unknown>"; |
| } |
| }; |
| PrettyPrinter PrettyPrinterInst; |
| class HexagonPrettyPrinter : public PrettyPrinter { |
| public: |
| void printLead(ArrayRef<uint8_t> Bytes, uint64_t Address, |
| raw_ostream &OS) { |
| uint32_t opcode = |
| (Bytes[3] << 24) | (Bytes[2] << 16) | (Bytes[1] << 8) | Bytes[0]; |
| if (!NoLeadingAddr) |
| OS << format("%8" PRIx64 ":", Address); |
| if (!NoShowRawInsn) { |
| OS << "\t"; |
| dumpBytes(Bytes.slice(0, 4), OS); |
| OS << format("%08" PRIx32, opcode); |
| } |
| } |
| void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes, |
| object::SectionedAddress Address, raw_ostream &OS, |
| StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP, |
| std::vector<RelocationRef> *Rels) override { |
| if (SP && (PrintSource || PrintLines)) |
| SP->printSourceLine(OS, Address, ""); |
| if (!MI) { |
| printLead(Bytes, Address.Address, OS); |
| OS << " <unknown>"; |
| return; |
| } |
| std::string Buffer; |
| { |
| raw_string_ostream TempStream(Buffer); |
| IP.printInst(MI, TempStream, "", STI); |
| } |
| StringRef Contents(Buffer); |
| // Split off bundle attributes |
| auto PacketBundle = Contents.rsplit('\n'); |
| // Split off first instruction from the rest |
| auto HeadTail = PacketBundle.first.split('\n'); |
| auto Preamble = " { "; |
| auto Separator = ""; |
| |
| // Hexagon's packets require relocations to be inline rather than |
| // clustered at the end of the packet. |
| std::vector<RelocationRef>::const_iterator RelCur = Rels->begin(); |
| std::vector<RelocationRef>::const_iterator RelEnd = Rels->end(); |
| auto PrintReloc = [&]() -> void { |
| while ((RelCur != RelEnd) && (RelCur->getOffset() <= Address.Address)) { |
| if (RelCur->getOffset() == Address.Address) { |
| printRelocation(*RelCur, Address.Address, 4); |
| return; |
| } |
| ++RelCur; |
| } |
| }; |
| |
| while (!HeadTail.first.empty()) { |
| OS << Separator; |
| Separator = "\n"; |
| if (SP && (PrintSource || PrintLines)) |
| SP->printSourceLine(OS, Address, ""); |
| printLead(Bytes, Address.Address, OS); |
| OS << Preamble; |
| Preamble = " "; |
| StringRef Inst; |
| auto Duplex = HeadTail.first.split('\v'); |
| if (!Duplex.second.empty()) { |
| OS << Duplex.first; |
| OS << "; "; |
| Inst = Duplex.second; |
| } |
| else |
| Inst = HeadTail.first; |
| OS << Inst; |
| HeadTail = HeadTail.second.split('\n'); |
| if (HeadTail.first.empty()) |
| OS << " } " << PacketBundle.second; |
| PrintReloc(); |
| Bytes = Bytes.slice(4); |
| Address.Address += 4; |
| } |
| } |
| }; |
| HexagonPrettyPrinter HexagonPrettyPrinterInst; |
| |
| class AMDGCNPrettyPrinter : public PrettyPrinter { |
| public: |
| void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes, |
| object::SectionedAddress Address, raw_ostream &OS, |
| StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP, |
| std::vector<RelocationRef> *Rels) override { |
| if (SP && (PrintSource || PrintLines)) |
| SP->printSourceLine(OS, Address); |
| |
| typedef support::ulittle32_t U32; |
| |
| if (MI) { |
| SmallString<40> InstStr; |
| raw_svector_ostream IS(InstStr); |
| |
| IP.printInst(MI, IS, "", STI); |
| |
| OS << left_justify(IS.str(), 60); |
| } else { |
| // an unrecognized encoding - this is probably data so represent it |
| // using the .long directive, or .byte directive if fewer than 4 bytes |
| // remaining |
| if (Bytes.size() >= 4) { |
| OS << format("\t.long 0x%08" PRIx32 " ", |
| static_cast<uint32_t>(*reinterpret_cast<const U32*>(Bytes.data()))); |
| OS.indent(42); |
| } else { |
| OS << format("\t.byte 0x%02" PRIx8, Bytes[0]); |
| for (unsigned int i = 1; i < Bytes.size(); i++) |
| OS << format(", 0x%02" PRIx8, Bytes[i]); |
| OS.indent(55 - (6 * Bytes.size())); |
| } |
| } |
| |
| OS << format("// %012" PRIX64 ": ", Address.Address); |
| if (Bytes.size() >=4) { |
| for (auto D : makeArrayRef(reinterpret_cast<const U32*>(Bytes.data()), |
| Bytes.size() / sizeof(U32))) |
| // D should be explicitly casted to uint32_t here as it is passed |
| // by format to snprintf as vararg. |
| OS << format("%08" PRIX32 " ", static_cast<uint32_t>(D)); |
| } else { |
| for (unsigned int i = 0; i < Bytes.size(); i++) |
| OS << format("%02" PRIX8 " ", Bytes[i]); |
| } |
| |
| if (!Annot.empty()) |
| OS << "// " << Annot; |
| } |
| }; |
| AMDGCNPrettyPrinter AMDGCNPrettyPrinterInst; |
| |
| class BPFPrettyPrinter : public PrettyPrinter { |
| public: |
| void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes, |
| object::SectionedAddress Address, raw_ostream &OS, |
| StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP, |
| std::vector<RelocationRef> *Rels) override { |
| if (SP && (PrintSource || PrintLines)) |
| SP->printSourceLine(OS, Address); |
| if (!NoLeadingAddr) |
| OS << format("%8" PRId64 ":", Address.Address / 8); |
| if (!NoShowRawInsn) { |
| OS << "\t"; |
| dumpBytes(Bytes, OS); |
| } |
| if (MI) |
| IP.printInst(MI, OS, "", STI); |
| else |
| OS << " <unknown>"; |
| } |
| }; |
| BPFPrettyPrinter BPFPrettyPrinterInst; |
| |
| PrettyPrinter &selectPrettyPrinter(Triple const &Triple) { |
| switch(Triple.getArch()) { |
| default: |
| return PrettyPrinterInst; |
| case Triple::hexagon: |
| return HexagonPrettyPrinterInst; |
| case Triple::amdgcn: |
| return AMDGCNPrettyPrinterInst; |
| case Triple::bpfel: |
| case Triple::bpfeb: |
| return BPFPrettyPrinterInst; |
| } |
| } |
| } |
| |
| static uint8_t getElfSymbolType(const ObjectFile *Obj, const SymbolRef &Sym) { |
| assert(Obj->isELF()); |
| if (auto *Elf32LEObj = dyn_cast<ELF32LEObjectFile>(Obj)) |
| return Elf32LEObj->getSymbol(Sym.getRawDataRefImpl())->getType(); |
| if (auto *Elf64LEObj = dyn_cast<ELF64LEObjectFile>(Obj)) |
| return Elf64LEObj->getSymbol(Sym.getRawDataRefImpl())->getType(); |
| if (auto *Elf32BEObj = dyn_cast<ELF32BEObjectFile>(Obj)) |
| return Elf32BEObj->getSymbol(Sym.getRawDataRefImpl())->getType(); |
| if (auto *Elf64BEObj = cast<ELF64BEObjectFile>(Obj)) |
| return Elf64BEObj->getSymbol(Sym.getRawDataRefImpl())->getType(); |
| llvm_unreachable("Unsupported binary format"); |
| } |
| |
| template <class ELFT> static void |
| addDynamicElfSymbols(const ELFObjectFile<ELFT> *Obj, |
| std::map<SectionRef, SectionSymbolsTy> &AllSymbols) { |
| for (auto Symbol : Obj->getDynamicSymbolIterators()) { |
| uint8_t SymbolType = Symbol.getELFType(); |
| if (SymbolType != ELF::STT_FUNC || Symbol.getSize() == 0) |
| continue; |
| |
| Expected<uint64_t> AddressOrErr = Symbol.getAddress(); |
| if (!AddressOrErr) |
| report_error(Obj->getFileName(), AddressOrErr.takeError()); |
| |
| Expected<StringRef> Name = Symbol.getName(); |
| if (!Name) |
| report_error(Obj->getFileName(), Name.takeError()); |
| if (Name->empty()) |
| continue; |
| |
| Expected<section_iterator> SectionOrErr = Symbol.getSection(); |
| if (!SectionOrErr) |
| report_error(Obj->getFileName(), SectionOrErr.takeError()); |
| section_iterator SecI = *SectionOrErr; |
| if (SecI == Obj->section_end()) |
| continue; |
| |
| AllSymbols[*SecI].emplace_back(*AddressOrErr, *Name, SymbolType); |
| } |
| } |
| |
| static void |
| addDynamicElfSymbols(const ObjectFile *Obj, |
| std::map<SectionRef, SectionSymbolsTy> &AllSymbols) { |
| assert(Obj->isELF()); |
| if (auto *Elf32LEObj = dyn_cast<ELF32LEObjectFile>(Obj)) |
| addDynamicElfSymbols(Elf32LEObj, AllSymbols); |
| else if (auto *Elf64LEObj = dyn_cast<ELF64LEObjectFile>(Obj)) |
| addDynamicElfSymbols(Elf64LEObj, AllSymbols); |
| else if (auto *Elf32BEObj = dyn_cast<ELF32BEObjectFile>(Obj)) |
| addDynamicElfSymbols(Elf32BEObj, AllSymbols); |
| else if (auto *Elf64BEObj = cast<ELF64BEObjectFile>(Obj)) |
| addDynamicElfSymbols(Elf64BEObj, AllSymbols); |
| else |
| llvm_unreachable("Unsupported binary format"); |
| } |
| |
| static void addPltEntries(const ObjectFile *Obj, |
| std::map<SectionRef, SectionSymbolsTy> &AllSymbols, |
| StringSaver &Saver) { |
| Optional<SectionRef> Plt = None; |
| for (const SectionRef &Section : Obj->sections()) { |
| StringRef Name; |
| if (Section.getName(Name)) |
| continue; |
| if (Name == ".plt") |
| Plt = Section; |
| } |
| if (!Plt) |
| return; |
| if (auto *ElfObj = dyn_cast<ELFObjectFileBase>(Obj)) { |
| for (auto PltEntry : ElfObj->getPltAddresses()) { |
| SymbolRef Symbol(PltEntry.first, ElfObj); |
| uint8_t SymbolType = getElfSymbolType(Obj, Symbol); |
| |
| Expected<StringRef> NameOrErr = Symbol.getName(); |
| if (!NameOrErr) |
| report_error(Obj->getFileName(), NameOrErr.takeError()); |
| if (NameOrErr->empty()) |
| continue; |
| StringRef Name = Saver.save((*NameOrErr + "@plt").str()); |
| |
| AllSymbols[*Plt].emplace_back(PltEntry.second, Name, SymbolType); |
| } |
| } |
| } |
| |
| // Normally the disassembly output will skip blocks of zeroes. This function |
| // returns the number of zero bytes that can be skipped when dumping the |
| // disassembly of the instructions in Buf. |
| static size_t countSkippableZeroBytes(ArrayRef<uint8_t> Buf) { |
| // Find the number of leading zeroes. |
| size_t N = 0; |
| while (N < Buf.size() && !Buf[N]) |
| ++N; |
| |
| // We may want to skip blocks of zero bytes, but unless we see |
| // at least 8 of them in a row. |
| if (N < 8) |
| return 0; |
| |
| // We skip zeroes in multiples of 4 because do not want to truncate an |
| // instruction if it starts with a zero byte. |
| return N & ~0x3; |
| } |
| |
| // Returns a map from sections to their relocations. |
| static std::map<SectionRef, std::vector<RelocationRef>> |
| getRelocsMap(llvm::object::ObjectFile const &Obj) { |
| std::map<SectionRef, std::vector<RelocationRef>> Ret; |
| for (const SectionRef &Section : ToolSectionFilter(Obj)) { |
| section_iterator RelSec = Section.getRelocatedSection(); |
| if (RelSec == Obj.section_end()) |
| continue; |
| std::vector<RelocationRef> &V = Ret[*RelSec]; |
| for (const RelocationRef &R : Section.relocations()) |
| V.push_back(R); |
| // Sort relocations by address. |
| llvm::sort(V, isRelocAddressLess); |
| } |
| return Ret; |
| } |
| |
| // Used for --adjust-vma to check if address should be adjusted by the |
| // specified value for a given section. |
| // For ELF we do not adjust non-allocatable sections like debug ones, |
| // because they are not loadable. |
| // TODO: implement for other file formats. |
| static bool shouldAdjustVA(const SectionRef &Section) { |
| const ObjectFile *Obj = Section.getObject(); |
| if (isa<object::ELFObjectFileBase>(Obj)) |
| return ELFSectionRef(Section).getFlags() & ELF::SHF_ALLOC; |
| return false; |
| } |
| |
| static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj, |
| MCContext &Ctx, MCDisassembler *DisAsm, |
| const MCInstrAnalysis *MIA, MCInstPrinter *IP, |
| const MCSubtargetInfo *STI, PrettyPrinter &PIP, |
| SourcePrinter &SP, bool InlineRelocs) { |
| std::map<SectionRef, std::vector<RelocationRef>> RelocMap; |
| if (InlineRelocs) |
| RelocMap = getRelocsMap(*Obj); |
| |
| // Create a mapping from virtual address to symbol name. This is used to |
| // pretty print the symbols while disassembling. |
| std::map<SectionRef, SectionSymbolsTy> AllSymbols; |
| SectionSymbolsTy AbsoluteSymbols; |
| for (const SymbolRef &Symbol : Obj->symbols()) { |
| Expected<uint64_t> AddressOrErr = Symbol.getAddress(); |
| if (!AddressOrErr) |
| report_error(Obj->getFileName(), AddressOrErr.takeError()); |
| uint64_t Address = *AddressOrErr; |
| |
| Expected<StringRef> Name = Symbol.getName(); |
| if (!Name) |
| report_error(Obj->getFileName(), Name.takeError()); |
| if (Name->empty()) |
| continue; |
| |
| Expected<section_iterator> SectionOrErr = Symbol.getSection(); |
| if (!SectionOrErr) |
| report_error(Obj->getFileName(), SectionOrErr.takeError()); |
| |
| uint8_t SymbolType = ELF::STT_NOTYPE; |
| if (Obj->isELF()) { |
| SymbolType = getElfSymbolType(Obj, Symbol); |
| if (SymbolType == ELF::STT_SECTION) |
| continue; |
| } |
| |
| section_iterator SecI = *SectionOrErr; |
| if (SecI != Obj->section_end()) |
| AllSymbols[*SecI].emplace_back(Address, *Name, SymbolType); |
| else |
| AbsoluteSymbols.emplace_back(Address, *Name, SymbolType); |
| |
| |
| } |
| if (AllSymbols.empty() && Obj->isELF()) |
| addDynamicElfSymbols(Obj, AllSymbols); |
| |
| BumpPtrAllocator A; |
| StringSaver Saver(A); |
| addPltEntries(Obj, AllSymbols, Saver); |
| |
| // Create a mapping from virtual address to section. |
| std::vector<std::pair<uint64_t, SectionRef>> SectionAddresses; |
| for (SectionRef Sec : Obj->sections()) |
| SectionAddresses.emplace_back(Sec.getAddress(), Sec); |
| array_pod_sort(SectionAddresses.begin(), SectionAddresses.end()); |
| |
| // Linked executables (.exe and .dll files) typically don't include a real |
| // symbol table but they might contain an export table. |
| if (const auto *COFFObj = dyn_cast<COFFObjectFile>(Obj)) { |
| for (const auto &ExportEntry : COFFObj->export_directories()) { |
| StringRef Name; |
| error(ExportEntry.getSymbolName(Name)); |
| if (Name.empty()) |
| continue; |
| uint32_t RVA; |
| error(ExportEntry.getExportRVA(RVA)); |
| |
| uint64_t VA = COFFObj->getImageBase() + RVA; |
| auto Sec = std::upper_bound( |
| SectionAddresses.begin(), SectionAddresses.end(), VA, |
| [](uint64_t LHS, const std::pair<uint64_t, SectionRef> &RHS) { |
| return LHS < RHS.first; |
| }); |
| if (Sec != SectionAddresses.begin()) |
| --Sec; |
| else |
| Sec = SectionAddresses.end(); |
| |
| if (Sec != SectionAddresses.end()) |
| AllSymbols[Sec->second].emplace_back(VA, Name, ELF::STT_NOTYPE); |
| else |
| AbsoluteSymbols.emplace_back(VA, Name, ELF::STT_NOTYPE); |
| } |
| } |
| |
| // Sort all the symbols, this allows us to use a simple binary search to find |
| // a symbol near an address. |
| for (std::pair<const SectionRef, SectionSymbolsTy> &SecSyms : AllSymbols) |
| array_pod_sort(SecSyms.second.begin(), SecSyms.second.end()); |
| array_pod_sort(AbsoluteSymbols.begin(), AbsoluteSymbols.end()); |
| |
| for (const SectionRef &Section : ToolSectionFilter(*Obj)) { |
| if (!DisassembleAll && (!Section.isText() || Section.isVirtual())) |
| continue; |
| |
| uint64_t SectionAddr = Section.getAddress(); |
| uint64_t SectSize = Section.getSize(); |
| if (!SectSize) |
| continue; |
| |
| // Get the list of all the symbols in this section. |
| SectionSymbolsTy &Symbols = AllSymbols[Section]; |
| std::vector<uint64_t> DataMappingSymsAddr; |
| std::vector<uint64_t> TextMappingSymsAddr; |
| if (isArmElf(Obj)) { |
| for (const auto &Symb : Symbols) { |
| uint64_t Address = std::get<0>(Symb); |
| StringRef Name = std::get<1>(Symb); |
| if (Name.startswith("$d")) |
| DataMappingSymsAddr.push_back(Address - SectionAddr); |
| if (Name.startswith("$x")) |
| TextMappingSymsAddr.push_back(Address - SectionAddr); |
| if (Name.startswith("$a")) |
| TextMappingSymsAddr.push_back(Address - SectionAddr); |
| if (Name.startswith("$t")) |
| TextMappingSymsAddr.push_back(Address - SectionAddr); |
| } |
| } |
| |
| llvm::sort(DataMappingSymsAddr); |
| llvm::sort(TextMappingSymsAddr); |
| |
| if (Obj->isELF() && Obj->getArch() == Triple::amdgcn) { |
| // AMDGPU disassembler uses symbolizer for printing labels |
| std::unique_ptr<MCRelocationInfo> RelInfo( |
| TheTarget->createMCRelocationInfo(TripleName, Ctx)); |
| if (RelInfo) { |
| std::unique_ptr<MCSymbolizer> Symbolizer( |
| TheTarget->createMCSymbolizer( |
| TripleName, nullptr, nullptr, &Symbols, &Ctx, std::move(RelInfo))); |
| DisAsm->setSymbolizer(std::move(Symbolizer)); |
| } |
| } |
| |
| StringRef SegmentName = ""; |
| if (const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(Obj)) { |
| DataRefImpl DR = Section.getRawDataRefImpl(); |
| SegmentName = MachO->getSectionFinalSegmentName(DR); |
| } |
| StringRef SectionName; |
| error(Section.getName(SectionName)); |
| |
| // If the section has no symbol at the start, just insert a dummy one. |
| if (Symbols.empty() || std::get<0>(Symbols[0]) != 0) { |
| Symbols.insert( |
| Symbols.begin(), |
| std::make_tuple(SectionAddr, SectionName, |
| Section.isText() ? ELF::STT_FUNC : ELF::STT_OBJECT)); |
| } |
| |
| SmallString<40> Comments; |
| raw_svector_ostream CommentStream(Comments); |
| |
| StringRef BytesStr; |
| error(Section.getContents(BytesStr)); |
| ArrayRef<uint8_t> Bytes(reinterpret_cast<const uint8_t *>(BytesStr.data()), |
| BytesStr.size()); |
| |
| uint64_t VMAAdjustment = 0; |
| if (shouldAdjustVA(Section)) |
| VMAAdjustment = AdjustVMA; |
| |
| uint64_t Size; |
| uint64_t Index; |
| bool PrintedSection = false; |
| std::vector<RelocationRef> Rels = RelocMap[Section]; |
| std::vector<RelocationRef>::const_iterator RelCur = Rels.begin(); |
| std::vector<RelocationRef>::const_iterator RelEnd = Rels.end(); |
| // Disassemble symbol by symbol. |
| for (unsigned SI = 0, SE = Symbols.size(); SI != SE; ++SI) { |
| uint64_t Start = std::get<0>(Symbols[SI]) - SectionAddr; |
| // The end is either the section end or the beginning of the next |
| // symbol. |
| uint64_t End = (SI == SE - 1) |
| ? SectSize |
| : std::get<0>(Symbols[SI + 1]) - SectionAddr; |
| // Don't try to disassemble beyond the end of section contents. |
| if (End > SectSize) |
| End = SectSize; |
| // If this symbol has the same address as the next symbol, then skip it. |
| if (Start >= End) |
| continue; |
| |
| // Check if we need to skip symbol |
| // Skip if the symbol's data is not between StartAddress and StopAddress |
| if (End + SectionAddr < StartAddress || |
| Start + SectionAddr > StopAddress) { |
| continue; |
| } |
| |
| /// Skip if user requested specific symbols and this is not in the list |
| if (!DisasmFuncsSet.empty() && |
| !DisasmFuncsSet.count(std::get<1>(Symbols[SI]))) |
| continue; |
| |
| if (!PrintedSection) { |
| PrintedSection = true; |
| outs() << "Disassembly of section "; |
| if (!SegmentName.empty()) |
| outs() << SegmentName << ","; |
| outs() << SectionName << ':'; |
| } |
| |
| // Stop disassembly at the stop address specified |
| if (End + SectionAddr > StopAddress) |
| End = StopAddress - SectionAddr; |
| |
| if (Obj->isELF() && Obj->getArch() == Triple::amdgcn) { |
| if (std::get<2>(Symbols[SI]) == ELF::STT_AMDGPU_HSA_KERNEL) { |
| // skip amd_kernel_code_t at the begining of kernel symbol (256 bytes) |
| Start += 256; |
| } |
| if (SI == SE - 1 || |
| std::get<2>(Symbols[SI + 1]) == ELF::STT_AMDGPU_HSA_KERNEL) { |
| // cut trailing zeroes at the end of kernel |
| // cut up to 256 bytes |
| const uint64_t EndAlign = 256; |
| const auto Limit = End - (std::min)(EndAlign, End - Start); |
| while (End > Limit && |
| *reinterpret_cast<const support::ulittle32_t*>(&Bytes[End - 4]) == 0) |
| End -= 4; |
| } |
| } |
| |
| outs() << '\n'; |
| if (!NoLeadingAddr) |
| outs() << format("%016" PRIx64 " ", |
| SectionAddr + Start + VMAAdjustment); |
| |
| StringRef SymbolName = std::get<1>(Symbols[SI]); |
| if (Demangle) |
| outs() << demangle(SymbolName) << ":\n"; |
| else |
| outs() << SymbolName << ":\n"; |
| |
| // Don't print raw contents of a virtual section. A virtual section |
| // doesn't have any contents in the file. |
| if (Section.isVirtual()) { |
| outs() << "...\n"; |
| continue; |
| } |
| |
| #ifndef NDEBUG |
| raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls(); |
| #else |
| raw_ostream &DebugOut = nulls(); |
| #endif |
| |
| // Some targets (like WebAssembly) have a special prelude at the start |
| // of each symbol. |
| DisAsm->onSymbolStart(SymbolName, Size, Bytes.slice(Start, End - Start), |
| SectionAddr + Start, DebugOut, CommentStream); |
| Start += Size; |
| |
| for (Index = Start; Index < End; Index += Size) { |
| MCInst Inst; |
| |
| if (Index + SectionAddr < StartAddress || |
| Index + SectionAddr > StopAddress) { |
| // skip byte by byte till StartAddress is reached |
| Size = 1; |
| continue; |
| } |
| // AArch64 ELF binaries can interleave data and text in the |
| // same section. We rely on the markers introduced to |
| // understand what we need to dump. If the data marker is within a |
| // function, it is denoted as a word/short etc |
| if (isArmElf(Obj) && std::get<2>(Symbols[SI]) != ELF::STT_OBJECT && |
| !DisassembleAll) { |
| uint64_t Stride = 0; |
| |
| auto DAI = std::lower_bound(DataMappingSymsAddr.begin(), |
| DataMappingSymsAddr.end(), Index); |
| if (DAI != DataMappingSymsAddr.end() && *DAI == Index) { |
| // Switch to data. |
| while (Index < End) { |
| outs() << format("%8" PRIx64 ":", SectionAddr + Index); |
| outs() << "\t"; |
| if (Index + 4 <= End) { |
| Stride = 4; |
| dumpBytes(Bytes.slice(Index, 4), outs()); |
| outs() << "\t.word\t"; |
| uint32_t Data = 0; |
| if (Obj->isLittleEndian()) { |
| const auto Word = |
| reinterpret_cast<const support::ulittle32_t *>( |
| Bytes.data() + Index); |
| Data = *Word; |
| } else { |
| const auto Word = reinterpret_cast<const support::ubig32_t *>( |
| Bytes.data() + Index); |
| Data = *Word; |
| } |
| outs() << "0x" << format("%08" PRIx32, Data); |
| } else if (Index + 2 <= End) { |
| Stride = 2; |
| dumpBytes(Bytes.slice(Index, 2), outs()); |
| outs() << "\t\t.short\t"; |
| uint16_t Data = 0; |
| if (Obj->isLittleEndian()) { |
| const auto Short = |
| reinterpret_cast<const support::ulittle16_t *>( |
| Bytes.data() + Index); |
| Data = *Short; |
| } else { |
| const auto Short = |
| reinterpret_cast<const support::ubig16_t *>(Bytes.data() + |
| Index); |
| Data = *Short; |
| } |
| outs() << "0x" << format("%04" PRIx16, Data); |
| } else { |
| Stride = 1; |
| dumpBytes(Bytes.slice(Index, 1), outs()); |
| outs() << "\t\t.byte\t"; |
| outs() << "0x" << format("%02" PRIx8, Bytes.slice(Index, 1)[0]); |
| } |
| Index += Stride; |
| outs() << "\n"; |
| auto TAI = std::lower_bound(TextMappingSymsAddr.begin(), |
| TextMappingSymsAddr.end(), Index); |
| if (TAI != TextMappingSymsAddr.end() && *TAI == Index) |
| break; |
| } |
| } |
| } |
| |
| // If there is a data symbol inside an ELF text section and we are only |
| // disassembling text (applicable all architectures), |
| // we are in a situation where we must print the data and not |
| // disassemble it. |
| if (Obj->isELF() && std::get<2>(Symbols[SI]) == ELF::STT_OBJECT && |
| !DisassembleAll && Section.isText()) { |
| // print out data up to 8 bytes at a time in hex and ascii |
| uint8_t AsciiData[9] = {'\0'}; |
| uint8_t Byte; |
| int NumBytes = 0; |
| |
| for (Index = Start; Index < End; Index += 1) { |
| if (((SectionAddr + Index) < StartAddress) || |
| ((SectionAddr + Index) > StopAddress)) |
| continue; |
| if (NumBytes == 0) { |
| outs() << format("%8" PRIx64 ":", SectionAddr + Index); |
| outs() << "\t"; |
| } |
| Byte = Bytes.slice(Index)[0]; |
| outs() << format(" %02x", Byte); |
| AsciiData[NumBytes] = isPrint(Byte) ? Byte : '.'; |
| |
| uint8_t IndentOffset = 0; |
| NumBytes++; |
| if (Index == End - 1 || NumBytes > 8) { |
| // Indent the space for less than 8 bytes data. |
| // 2 spaces for byte and one for space between bytes |
| IndentOffset = 3 * (8 - NumBytes); |
| for (int Excess = NumBytes; Excess < 8; Excess++) |
| AsciiData[Excess] = '\0'; |
| NumBytes = 8; |
| } |
| if (NumBytes == 8) { |
| AsciiData[8] = '\0'; |
| outs() << std::string(IndentOffset, ' ') << " "; |
| outs() << reinterpret_cast<char *>(AsciiData); |
| outs() << '\n'; |
| NumBytes = 0; |
| } |
| } |
| } |
| if (Index >= End) |
| break; |
| |
| // When -z or --disassemble-zeroes are given we always dissasemble them. |
| // Otherwise we might want to skip zero bytes we see. |
| if (!DisassembleZeroes) { |
| uint64_t MaxOffset = End - Index; |
| // For -reloc: print zero blocks patched by relocations, so that |
| // relocations can be shown in the dump. |
| if (RelCur != RelEnd) |
| MaxOffset = RelCur->getOffset() - Index; |
| |
| if (size_t N = |
| countSkippableZeroBytes(Bytes.slice(Index, MaxOffset))) { |
| outs() << "\t\t..." << '\n'; |
| Index += N; |
| if (Index >= End) |
| break; |
| } |
| } |
| |
| // Disassemble a real instruction or a data when disassemble all is |
| // provided |
| bool Disassembled = DisAsm->getInstruction(Inst, Size, Bytes.slice(Index), |
| SectionAddr + Index, DebugOut, |
| CommentStream); |
| if (Size == 0) |
| Size = 1; |
| |
| PIP.printInst(*IP, Disassembled ? &Inst : nullptr, |
| Bytes.slice(Index, Size), |
| {SectionAddr + Index + VMAAdjustment, Section.getIndex()}, |
| outs(), "", *STI, &SP, &Rels); |
| outs() << CommentStream.str(); |
| Comments.clear(); |
| |
| // Try to resolve the target of a call, tail call, etc. to a specific |
| // symbol. |
| if (MIA && (MIA->isCall(Inst) || MIA->isUnconditionalBranch(Inst) || |
| MIA->isConditionalBranch(Inst))) { |
| uint64_t Target; |
| if (MIA->evaluateBranch(Inst, SectionAddr + Index, Size, Target)) { |
| // In a relocatable object, the target's section must reside in |
| // the same section as the call instruction or it is accessed |
| // through a relocation. |
| // |
| // In a non-relocatable object, the target may be in any section. |
| // |
| // N.B. We don't walk the relocations in the relocatable case yet. |
| auto *TargetSectionSymbols = &Symbols; |
| if (!Obj->isRelocatableObject()) { |
| auto SectionAddress = std::upper_bound( |
| SectionAddresses.begin(), SectionAddresses.end(), Target, |
| [](uint64_t LHS, |
| const std::pair<uint64_t, SectionRef> &RHS) { |
| return LHS < RHS.first; |
| }); |
| if (SectionAddress != SectionAddresses.begin()) { |
| --SectionAddress; |
| TargetSectionSymbols = &AllSymbols[SectionAddress->second]; |
| } else { |
| TargetSectionSymbols = &AbsoluteSymbols; |
| } |
| } |
| |
| // Find the first symbol in the section whose offset is less than |
| // or equal to the target. If there isn't a section that contains |
| // the target, find the nearest preceding absolute symbol. |
| auto TargetSym = std::upper_bound( |
| TargetSectionSymbols->begin(), TargetSectionSymbols->end(), |
| Target, [](uint64_t LHS, |
| const std::tuple<uint64_t, StringRef, uint8_t> &RHS) { |
| return LHS < std::get<0>(RHS); |
| }); |
| if (TargetSym == TargetSectionSymbols->begin()) { |
| TargetSectionSymbols = &AbsoluteSymbols; |
| TargetSym = std::upper_bound( |
| AbsoluteSymbols.begin(), AbsoluteSymbols.end(), |
| Target, [](uint64_t LHS, |
| const std::tuple<uint64_t, StringRef, uint8_t> &RHS) { |
| return LHS < std::get<0>(RHS); |
| }); |
| } |
| if (TargetSym != TargetSectionSymbols->begin()) { |
| --TargetSym; |
| uint64_t TargetAddress = std::get<0>(*TargetSym); |
| StringRef TargetName = std::get<1>(*TargetSym); |
| outs() << " <" << TargetName; |
| uint64_t Disp = Target - TargetAddress; |
| if (Disp) |
| outs() << "+0x" << Twine::utohexstr(Disp); |
| outs() << '>'; |
| } |
| } |
| } |
| outs() << "\n"; |
| |
| // Hexagon does this in pretty printer |
| if (Obj->getArch() != Triple::hexagon) { |
| // Print relocation for instruction. |
| while (RelCur != RelEnd) { |
| uint64_t Offset = RelCur->getOffset(); |
| // If this relocation is hidden, skip it. |
| if (getHidden(*RelCur) || ((SectionAddr + Offset) < StartAddress)) { |
| ++RelCur; |
| continue; |
| } |
| |
| // Stop when RelCur's offset is past the current instruction. |
| if (Offset >= Index + Size) |
| break; |
| |
| // When --adjust-vma is used, update the address printed. |
| if (RelCur->getSymbol() != Obj->symbol_end()) { |
| Expected<section_iterator> SymSI = |
| RelCur->getSymbol()->getSection(); |
| if (SymSI && *SymSI != Obj->section_end() && |
| (shouldAdjustVA(**SymSI))) |
| Offset += AdjustVMA; |
| } |
| |
| printRelocation(*RelCur, SectionAddr + Offset, |
| Obj->getBytesInAddress()); |
| ++RelCur; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static void disassembleObject(const ObjectFile *Obj, bool InlineRelocs) { |
| if (StartAddress > StopAddress) |
| error("Start address should be less than stop address"); |
| |
| const Target *TheTarget = getTarget(Obj); |
| |
| // Package up features to be passed to target/subtarget |
| SubtargetFeatures Features = Obj->getFeatures(); |
| if (!MAttrs.empty()) |
| for (unsigned I = 0; I != MAttrs.size(); ++I) |
| Features.AddFeature(MAttrs[I]); |
| |
| std::unique_ptr<const MCRegisterInfo> MRI( |
| TheTarget->createMCRegInfo(TripleName)); |
| if (!MRI) |
| report_error(Obj->getFileName(), |
| "no register info for target " + TripleName); |
| |
| // Set up disassembler. |
| std::unique_ptr<const MCAsmInfo> AsmInfo( |
| TheTarget->createMCAsmInfo(*MRI, TripleName)); |
| if (!AsmInfo) |
| report_error(Obj->getFileName(), |
| "no assembly info for target " + TripleName); |
| std::unique_ptr<const MCSubtargetInfo> STI( |
| TheTarget->createMCSubtargetInfo(TripleName, MCPU, Features.getString())); |
| if (!STI) |
| report_error(Obj->getFileName(), |
| "no subtarget info for target " + TripleName); |
| std::unique_ptr<const MCInstrInfo> MII(TheTarget->createMCInstrInfo()); |
| if (!MII) |
| report_error(Obj->getFileName(), |
| "no instruction info for target " + TripleName); |
| MCObjectFileInfo MOFI; |
| MCContext Ctx(AsmInfo.get(), MRI.get(), &MOFI); |
| // FIXME: for now initialize MCObjectFileInfo with default values |
| MOFI.InitMCObjectFileInfo(Triple(TripleName), false, Ctx); |
| |
| std::unique_ptr<MCDisassembler> DisAsm( |
| TheTarget->createMCDisassembler(*STI, Ctx)); |
| if (!DisAsm) |
| report_error(Obj->getFileName(), |
| "no disassembler for target " + TripleName); |
| |
| std::unique_ptr<const MCInstrAnalysis> MIA( |
| TheTarget->createMCInstrAnalysis(MII.get())); |
| |
| int AsmPrinterVariant = AsmInfo->getAssemblerDialect(); |
| std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter( |
| Triple(TripleName), AsmPrinterVariant, *AsmInfo, *MII, *MRI)); |
| if (!IP) |
| report_error(Obj->getFileName(), |
| "no instruction printer for target " + TripleName); |
| IP->setPrintImmHex(PrintImmHex); |
| |
| PrettyPrinter &PIP = selectPrettyPrinter(Triple(TripleName)); |
| SourcePrinter SP(Obj, TheTarget->getName()); |
| |
| for (StringRef Opt : DisassemblerOptions) |
| if (!IP->applyTargetSpecificCLOption(Opt)) |
| error("Unrecognized disassembler option: " + Opt); |
| |
| disassembleObject(TheTarget, Obj, Ctx, DisAsm.get(), MIA.get(), IP.get(), |
| STI.get(), PIP, SP, InlineRelocs); |
| } |
| |
| void llvm::printRelocations(const ObjectFile *Obj) { |
| StringRef Fmt = Obj->getBytesInAddress() > 4 ? "%016" PRIx64 : |
| "%08" PRIx64; |
| // Regular objdump doesn't print relocations in non-relocatable object |
| // files. |
| if (!Obj->isRelocatableObject()) |
| return; |
| |
| for (const SectionRef &Section : ToolSectionFilter(*Obj)) { |
| if (Section.relocation_begin() == Section.relocation_end()) |
| continue; |
| StringRef SecName; |
| error(Section.getName(SecName)); |
| outs() << "RELOCATION RECORDS FOR [" << SecName << "]:\n"; |
| for (const RelocationRef &Reloc : Section.relocations()) { |
| uint64_t Address = Reloc.getOffset(); |
| SmallString<32> RelocName; |
| SmallString<32> ValueStr; |
| if (Address < StartAddress || Address > StopAddress || getHidden(Reloc)) |
| continue; |
| Reloc.getTypeName(RelocName); |
| error(getRelocationValueString(Reloc, ValueStr)); |
| outs() << format(Fmt.data(), Address) << " " << RelocName << " " |
| << ValueStr << "\n"; |
| } |
| outs() << "\n"; |
| } |
| } |
| |
| void llvm::printDynamicRelocations(const ObjectFile *Obj) { |
| // For the moment, this option is for ELF only |
| if (!Obj->isELF()) |
| return; |
| |
| const auto *Elf = dyn_cast<ELFObjectFileBase>(Obj); |
| if (!Elf || Elf->getEType() != ELF::ET_DYN) { |
| error("not a dynamic object"); |
| return; |
| } |
| |
| std::vector<SectionRef> DynRelSec = Obj->dynamic_relocation_sections(); |
| if (DynRelSec.empty()) |
| return; |
| |
| outs() << "DYNAMIC RELOCATION RECORDS\n"; |
| StringRef Fmt = Obj->getBytesInAddress() > 4 ? "%016" PRIx64 : "%08" PRIx64; |
| for (const SectionRef &Section : DynRelSec) { |
| if (Section.relocation_begin() == Section.relocation_end()) |
| continue; |
| for (const RelocationRef &Reloc : Section.relocations()) { |
| uint64_t Address = Reloc.getOffset(); |
| SmallString<32> RelocName; |
| SmallString<32> ValueStr; |
| Reloc.getTypeName(RelocName); |
| error(getRelocationValueString(Reloc, ValueStr)); |
| outs() << format(Fmt.data(), Address) << " " << RelocName << " " |
| << ValueStr << "\n"; |
| } |
| } |
| } |
| |
| // Returns true if we need to show LMA column when dumping section headers. We |
| // show it only when the platform is ELF and either we have at least one section |
| // whose VMA and LMA are different and/or when --show-lma flag is used. |
| static bool shouldDisplayLMA(const ObjectFile *Obj) { |
| if (!Obj->isELF()) |
| return false; |
| for (const SectionRef &S : ToolSectionFilter(*Obj)) |
| if (S.getAddress() != getELFSectionLMA(S)) |
| return true; |
| return ShowLMA; |
| } |
| |
| void llvm::printSectionHeaders(const ObjectFile *Obj) { |
| bool HasLMAColumn = shouldDisplayLMA(Obj); |
| if (HasLMAColumn) |
| outs() << "Sections:\n" |
| "Idx Name Size VMA LMA " |
| "Type\n"; |
| else |
| outs() << "Sections:\n" |
| "Idx Name Size VMA Type\n"; |
| |
| for (const SectionRef &Section : ToolSectionFilter(*Obj)) { |
| StringRef Name; |
| error(Section.getName(Name)); |
| uint64_t VMA = Section.getAddress(); |
| if (shouldAdjustVA(Section)) |
| VMA += AdjustVMA; |
| |
| uint64_t Size = Section.getSize(); |
| bool Text = Section.isText(); |
| bool Data = Section.isData(); |
| bool BSS = Section.isBSS(); |
| std::string Type = (std::string(Text ? "TEXT " : "") + |
| (Data ? "DATA " : "") + (BSS ? "BSS" : "")); |
| |
| if (HasLMAColumn) |
| outs() << format("%3d %-13s %08" PRIx64 " %016" PRIx64 " %016" PRIx64 |
| " %s\n", |
| (unsigned)Section.getIndex(), Name.str().c_str(), Size, |
| VMA, getELFSectionLMA(Section), Type.c_str()); |
| else |
| outs() << format("%3d %-13s %08" PRIx64 " %016" PRIx64 " %s\n", |
| (unsigned)Section.getIndex(), Name.str().c_str(), Size, |
| VMA, Type.c_str()); |
| } |
| outs() << "\n"; |
| } |
| |
| void llvm::printSectionContents(const ObjectFile *Obj) { |
| std::error_code EC; |
| for (const SectionRef &Section : ToolSectionFilter(*Obj)) { |
| StringRef Name; |
| StringRef Contents; |
| error(Section.getName(Name)); |
| uint64_t BaseAddr = Section.getAddress(); |
| uint64_t Size = Section.getSize(); |
| if (!Size) |
| continue; |
| |
| outs() << "Contents of section " << Name << ":\n"; |
| if (Section.isBSS()) { |
| outs() << format("<skipping contents of bss section at [%04" PRIx64 |
| ", %04" PRIx64 ")>\n", |
| BaseAddr, BaseAddr + Size); |
| continue; |
| } |
| |
| error(Section.getContents(Contents)); |
| |
| // Dump out the content as hex and printable ascii characters. |
| for (std::size_t Addr = 0, End = Contents.size(); Addr < End; Addr += 16) { |
| outs() << format(" %04" PRIx64 " ", BaseAddr + Addr); |
| // Dump line of hex. |
| for (std::size_t I = 0; I < 16; ++I) { |
| if (I != 0 && I % 4 == 0) |
| outs() << ' '; |
| if (Addr + I < End) |
| outs() << hexdigit((Contents[Addr + I] >> 4) & 0xF, true) |
| << hexdigit(Contents[Addr + I] & 0xF, true); |
| else |
| outs() << " "; |
| } |
| // Print ascii. |
| outs() << " "; |
| for (std::size_t I = 0; I < 16 && Addr + I < End; ++I) { |
| if (isPrint(static_cast<unsigned char>(Contents[Addr + I]) & 0xFF)) |
| outs() << Contents[Addr + I]; |
| else |
| outs() << "."; |
| } |
| outs() << "\n"; |
| } |
| } |
| } |
| |
| void llvm::printSymbolTable(const ObjectFile *O, StringRef ArchiveName, |
| StringRef ArchitectureName) { |
| outs() << "SYMBOL TABLE:\n"; |
| |
| if (const COFFObjectFile *Coff = dyn_cast<const COFFObjectFile>(O)) { |
| printCOFFSymbolTable(Coff); |
| return; |
| } |
| |
| for (auto I = O->symbol_begin(), E = O->symbol_end(); I != E; ++I) { |
| // Skip printing the special zero symbol when dumping an ELF file. |
| // This makes the output consistent with the GNU objdump. |
| if (I == O->symbol_begin() && isa<ELFObjectFileBase>(O)) |
| continue; |
| |
| const SymbolRef &Symbol = *I; |
| Expected<uint64_t> AddressOrError = Symbol.getAddress(); |
| if (!AddressOrError) |
| report_error(ArchiveName, O->getFileName(), AddressOrError.takeError(), |
| ArchitectureName); |
| uint64_t Address = *AddressOrError; |
| if ((Address < StartAddress) || (Address > StopAddress)) |
| continue; |
| Expected<SymbolRef::Type> TypeOrError = Symbol.getType(); |
| if (!TypeOrError) |
| report_error(ArchiveName, O->getFileName(), TypeOrError.takeError(), |
| ArchitectureName); |
| SymbolRef::Type Type = *TypeOrError; |
| uint32_t Flags = Symbol.getFlags(); |
| Expected<section_iterator> SectionOrErr = Symbol.getSection(); |
| if (!SectionOrErr) |
| report_error(ArchiveName, O->getFileName(), SectionOrErr.takeError(), |
| ArchitectureName); |
| section_iterator Section = *SectionOrErr; |
| StringRef Name; |
| if (Type == SymbolRef::ST_Debug && Section != O->section_end()) { |
| Section->getName(Name); |
| } else { |
| Expected<StringRef> NameOrErr = Symbol.getName(); |
| if (!NameOrErr) |
| report_error(ArchiveName, O->getFileName(), NameOrErr.takeError(), |
| ArchitectureName); |
| Name = *NameOrErr; |
| } |
| |
| bool Global = Flags & SymbolRef::SF_Global; |
| bool Weak = Flags & SymbolRef::SF_Weak; |
| bool Absolute = Flags & SymbolRef::SF_Absolute; |
| bool Common = Flags & SymbolRef::SF_Common; |
| bool Hidden = Flags & SymbolRef::SF_Hidden; |
| |
| char GlobLoc = ' '; |
| if (Type != SymbolRef::ST_Unknown) |
| GlobLoc = Global ? 'g' : 'l'; |
| char Debug = (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File) |
| ? 'd' : ' '; |
| char FileFunc = ' '; |
| if (Type == SymbolRef::ST_File) |
| FileFunc = 'f'; |
| else if (Type == SymbolRef::ST_Function) |
| FileFunc = 'F'; |
| else if (Type == SymbolRef::ST_Data) |
| FileFunc = 'O'; |
| |
| const char *Fmt = O->getBytesInAddress() > 4 ? "%016" PRIx64 : |
| "%08" PRIx64; |
| |
| outs() << format(Fmt, Address) << " " |
| << GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' ' |
| << (Weak ? 'w' : ' ') // Weak? |
| << ' ' // Constructor. Not supported yet. |
| << ' ' // Warning. Not supported yet. |
| << ' ' // Indirect reference to another symbol. |
| << Debug // Debugging (d) or dynamic (D) symbol. |
| << FileFunc // Name of function (F), file (f) or object (O). |
| << ' '; |
| if (Absolute) { |
| outs() << "*ABS*"; |
| } else if (Common) { |
| outs() << "*COM*"; |
| } else if (Section == O->section_end()) { |
| outs() << "*UND*"; |
| } else { |
| if (const MachOObjectFile *MachO = |
| dyn_cast<const MachOObjectFile>(O)) { |
| DataRefImpl DR = Section->getRawDataRefImpl(); |
| StringRef SegmentName = MachO->getSectionFinalSegmentName(DR); |
| outs() << SegmentName << ","; |
| } |
| StringRef SectionName; |
| error(Section->getName(SectionName)); |
| outs() << SectionName; |
| } |
| |
| outs() << '\t'; |
| if (Common || isa<ELFObjectFileBase>(O)) { |
| uint64_t Val = |
| Common ? Symbol.getAlignment() : ELFSymbolRef(Symbol).getSize(); |
| outs() << format("\t %08" PRIx64 " ", Val); |
| } |
| |
| if (Hidden) |
| outs() << ".hidden "; |
| |
| if (Demangle) |
| outs() << demangle(Name) << '\n'; |
| else |
| outs() << Name << '\n'; |
| } |
| } |
| |
| static void printUnwindInfo(const ObjectFile *O) { |
| outs() << "Unwind info:\n\n"; |
| |
| if (const COFFObjectFile *Coff = dyn_cast<COFFObjectFile>(O)) |
| printCOFFUnwindInfo(Coff); |
| else if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(O)) |
| printMachOUnwindInfo(MachO); |
| else |
| // TODO: Extract DWARF dump tool to objdump. |
| WithColor::error(errs(), ToolName) |
| << "This operation is only currently supported " |
| "for COFF and MachO object files.\n"; |
| } |
| |
| void llvm::printExportsTrie(const ObjectFile *o) { |
| outs() << "Exports trie:\n"; |
| if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o)) |
| printMachOExportsTrie(MachO); |
| else |
| WithColor::error(errs(), ToolName) |
| << "This operation is only currently supported " |
| "for Mach-O executable files.\n"; |
| } |
| |
| void llvm::printRebaseTable(ObjectFile *o) { |
| outs() << "Rebase table:\n"; |
| if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o)) |
| printMachORebaseTable(MachO); |
| else |
| WithColor::error(errs(), ToolName) |
| << "This operation is only currently supported " |
| "for Mach-O executable files.\n"; |
| } |
| |
| void llvm::printBindTable(ObjectFile *o) { |
| outs() << "Bind table:\n"; |
| if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o)) |
| printMachOBindTable(MachO); |
| else |
| WithColor::error(errs(), ToolName) |
| << "This operation is only currently supported " |
| "for Mach-O executable files.\n"; |
| } |
| |
| void llvm::printLazyBindTable(ObjectFile *o) { |
| outs() << "Lazy bind table:\n"; |
| if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o)) |
| printMachOLazyBindTable(MachO); |
| else |
| WithColor::error(errs(), ToolName) |
| << "This operation is only currently supported " |
| "for Mach-O executable files.\n"; |
| } |
| |
| void llvm::printWeakBindTable(ObjectFile *o) { |
| outs() << "Weak bind table:\n"; |
| if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o)) |
| printMachOWeakBindTable(MachO); |
| else |
| WithColor::error(errs(), ToolName) |
| << "This operation is only currently supported " |
| "for Mach-O executable files.\n"; |
| } |
| |
| /// Dump the raw contents of the __clangast section so the output can be piped |
| /// into llvm-bcanalyzer. |
| void llvm::printRawClangAST(const ObjectFile *Obj) { |
| if (outs().is_displayed()) { |
| WithColor::error(errs(), ToolName) |
| << "The -raw-clang-ast option will dump the raw binary contents of " |
| "the clang ast section.\n" |
| "Please redirect the output to a file or another program such as " |
| "llvm-bcanalyzer.\n"; |
| return; |
| } |
| |
| StringRef ClangASTSectionName("__clangast"); |
| if (isa<COFFObjectFile>(Obj)) { |
| ClangASTSectionName = "clangast"; |
| } |
| |
| Optional<object::SectionRef> ClangASTSection; |
| for (auto Sec : ToolSectionFilter(*Obj)) { |
| StringRef Name; |
| Sec.getName(Name); |
| if (Name == ClangASTSectionName) { |
| ClangASTSection = Sec; |
| break; |
| } |
| } |
| if (!ClangASTSection) |
| return; |
| |
| StringRef ClangASTContents; |
| error(ClangASTSection.getValue().getContents(ClangASTContents)); |
| outs().write(ClangASTContents.data(), ClangASTContents.size()); |
| } |
| |
| static void printFaultMaps(const ObjectFile *Obj) { |
| StringRef FaultMapSectionName; |
| |
| if (isa<ELFObjectFileBase>(Obj)) { |
| FaultMapSectionName = ".llvm_faultmaps"; |
| } else if (isa<MachOObjectFile>(Obj)) { |
| FaultMapSectionName = "__llvm_faultmaps"; |
| } else { |
| WithColor::error(errs(), ToolName) |
| << "This operation is only currently supported " |
| "for ELF and Mach-O executable files.\n"; |
| return; |
| } |
| |
| Optional<object::SectionRef> FaultMapSection; |
| |
| for (auto Sec : ToolSectionFilter(*Obj)) { |
| StringRef Name; |
| Sec.getName(Name); |
| if (Name == FaultMapSectionName) { |
| FaultMapSection = Sec; |
| break; |
| } |
| } |
| |
| outs() << "FaultMap table:\n"; |
| |
| if (!FaultMapSection.hasValue()) { |
| outs() << "<not found>\n"; |
| return; |
| } |
| |
| StringRef FaultMapContents; |
| error(FaultMapSection.getValue().getContents(FaultMapContents)); |
| |
| FaultMapParser FMP(FaultMapContents.bytes_begin(), |
| FaultMapContents.bytes_end()); |
| |
| outs() << FMP; |
| } |
| |
| static void printPrivateFileHeaders(const ObjectFile *O, bool OnlyFirst) { |
| if (O->isELF()) { |
| printELFFileHeader(O); |
| printELFDynamicSection(O); |
| printELFSymbolVersionInfo(O); |
| return; |
| } |
| if (O->isCOFF()) |
| return printCOFFFileHeader(O); |
| if (O->isWasm()) |
| return printWasmFileHeader(O); |
| if (O->isMachO()) { |
| printMachOFileHeader(O); |
| if (!OnlyFirst) |
| printMachOLoadCommands(O); |
| return; |
| } |
| report_error(O->getFileName(), "Invalid/Unsupported object file format"); |
| } |
| |
| static void printFileHeaders(const ObjectFile *O) { |
| if (!O->isELF() && !O->isCOFF()) |
| report_error(O->getFileName(), "Invalid/Unsupported object file format"); |
| |
| Triple::ArchType AT = O->getArch(); |
| outs() << "architecture: " << Triple::getArchTypeName(AT) << "\n"; |
| Expected<uint64_t> StartAddrOrErr = O->getStartAddress(); |
| if (!StartAddrOrErr) |
| report_error(O->getFileName(), StartAddrOrErr.takeError()); |
| |
| StringRef Fmt = O->getBytesInAddress() > 4 ? "%016" PRIx64 : "%08" PRIx64; |
| uint64_t Address = StartAddrOrErr.get(); |
| outs() << "start address: " |
| << "0x" << format(Fmt.data(), Address) << "\n\n"; |
| } |
| |
| static void printArchiveChild(StringRef Filename, const Archive::Child &C) { |
| Expected<sys::fs::perms> ModeOrErr = C.getAccessMode(); |
| if (!ModeOrErr) { |
| WithColor::error(errs(), ToolName) << "ill-formed archive entry.\n"; |
| consumeError(ModeOrErr.takeError()); |
| return; |
| } |
| sys::fs::perms Mode = ModeOrErr.get(); |
| outs() << ((Mode & sys::fs::owner_read) ? "r" : "-"); |
| outs() << ((Mode & sys::fs::owner_write) ? "w" : "-"); |
| outs() << ((Mode & sys::fs::owner_exe) ? "x" : "-"); |
| outs() << ((Mode & sys::fs::group_read) ? "r" : "-"); |
| outs() << ((Mode & sys::fs::group_write) ? "w" : "-"); |
| outs() << ((Mode & sys::fs::group_exe) ? "x" : "-"); |
| outs() << ((Mode & sys::fs::others_read) ? "r" : "-"); |
| outs() << ((Mode & sys::fs::others_write) ? "w" : "-"); |
| outs() << ((Mode & sys::fs::others_exe) ? "x" : "-"); |
| |
| outs() << " "; |
| |
| Expected<unsigned> UIDOrErr = C.getUID(); |
| if (!UIDOrErr) |
| report_error(Filename, UIDOrErr.takeError()); |
| unsigned UID = UIDOrErr.get(); |
| outs() << format("%d/", UID); |
| |
| Expected<unsigned> GIDOrErr = C.getGID(); |
| if (!GIDOrErr) |
| report_error(Filename, GIDOrErr.takeError()); |
| unsigned GID = GIDOrErr.get(); |
| outs() << format("%-d ", GID); |
| |
| Expected<uint64_t> Size = C.getRawSize(); |
| if (!Size) |
| report_error(Filename, Size.takeError()); |
| outs() << format("%6" PRId64, Size.get()) << " "; |
| |
| StringRef RawLastModified = C.getRawLastModified(); |
| unsigned Seconds; |
| if (RawLastModified.getAsInteger(10, Seconds)) |
| outs() << "(date: \"" << RawLastModified |
| << "\" contains non-decimal chars) "; |
| else { |
| // Since ctime(3) returns a 26 character string of the form: |
| // "Sun Sep 16 01:03:52 1973\n\0" |
| // just print 24 characters. |
| time_t t = Seconds; |
| outs() << format("%.24s ", ctime(&t)); |
| } |
| |
| StringRef Name = ""; |
| Expected<StringRef> NameOrErr = C.getName(); |
| if (!NameOrErr) { |
| consumeError(NameOrErr.takeError()); |
| Expected<StringRef> RawNameOrErr = C.getRawName(); |
| if (!RawNameOrErr) |
| report_error(Filename, NameOrErr.takeError()); |
| Name = RawNameOrErr.get(); |
| } else { |
| Name = NameOrErr.get(); |
| } |
| outs() << Name << "\n"; |
| } |
| |
| static void dumpObject(ObjectFile *O, const Archive *A = nullptr, |
| const Archive::Child *C = nullptr) { |
| // Avoid other output when using a raw option. |
| if (!RawClangAST) { |
| outs() << '\n'; |
| if (A) |
| outs() << A->getFileName() << "(" << O->getFileName() << ")"; |
| else |
| outs() << O->getFileName(); |
| outs() << ":\tfile format " << O->getFileFormatName() << "\n\n"; |
| } |
| |
| StringRef ArchiveName = A ? A->getFileName() : ""; |
| if (FileHeaders) |
| printFileHeaders(O); |
| if (ArchiveHeaders && !MachOOpt && C) |
| printArchiveChild(ArchiveName, *C); |
| if (Disassemble) |
| disassembleObject(O, Relocations); |
| if (Relocations && !Disassemble) |
| printRelocations(O); |
| if (DynamicRelocations) |
| printDynamicRelocations(O); |
| if (SectionHeaders) |
| printSectionHeaders(O); |
| if (SectionContents) |
| printSectionContents(O); |
| if (SymbolTable) |
| printSymbolTable(O, ArchiveName); |
| if (UnwindInfo) |
| printUnwindInfo(O); |
| if (PrivateHeaders || FirstPrivateHeader) |
| printPrivateFileHeaders(O, FirstPrivateHeader); |
| if (ExportsTrie) |
| printExportsTrie(O); |
| if (Rebase) |
| printRebaseTable(O); |
| if (Bind) |
| printBindTable(O); |
| if (LazyBind) |
| printLazyBindTable(O); |
| if (WeakBind) |
| printWeakBindTable(O); |
| if (RawClangAST) |
| printRawClangAST(O); |
| if (PrintFaultMaps) |
| printFaultMaps(O); |
| if (DwarfDumpType != DIDT_Null) { |
| std::unique_ptr<DIContext> DICtx = DWARFContext::create(*O); |
| // Dump the complete DWARF structure. |
| DIDumpOptions DumpOpts; |
| DumpOpts.DumpType = DwarfDumpType; |
| DICtx->dump(outs(), DumpOpts); |
| } |
| } |
| |
| static void dumpObject(const COFFImportFile *I, const Archive *A, |
| const Archive::Child *C = nullptr) { |
| StringRef ArchiveName = A ? A->getFileName() : ""; |
| |
| // Avoid other output when using a raw option. |
| if (!RawClangAST) |
| outs() << '\n' |
| << ArchiveName << "(" << I->getFileName() << ")" |
| << ":\tfile format COFF-import-file" |
| << "\n\n"; |
| |
| if (ArchiveHeaders && !MachOOpt && C) |
| printArchiveChild(ArchiveName, *C); |
| if (SymbolTable) |
| printCOFFSymbolTable(I); |
| } |
| |
| /// Dump each object file in \a a; |
| static void dumpArchive(const Archive *A) { |
| Error Err = Error::success(); |
| for (auto &C : A->children(Err)) { |
| Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary(); |
| if (!ChildOrErr) { |
| if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) |
| report_error(A->getFileName(), C, std::move(E)); |
| continue; |
| } |
| if (ObjectFile *O = dyn_cast<ObjectFile>(&*ChildOrErr.get())) |
| dumpObject(O, A, &C); |
| else if (COFFImportFile *I = dyn_cast<COFFImportFile>(&*ChildOrErr.get())) |
| dumpObject(I, A, &C); |
| else |
| report_error(A->getFileName(), object_error::invalid_file_type); |
| } |
| if (Err) |
| report_error(A->getFileName(), std::move(Err)); |
| } |
| |
| /// Open file and figure out how to dump it. |
| static void dumpInput(StringRef file) { |
| // If we are using the Mach-O specific object file parser, then let it parse |
| // the file and process the command line options. So the -arch flags can |
| // be used to select specific slices, etc. |
| if (MachOOpt) { |
| parseInputMachO(file); |
| return; |
| } |
| |
| // Attempt to open the binary. |
| Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(file); |
| if (!BinaryOrErr) |
| report_error(file, BinaryOrErr.takeError()); |
| Binary &Binary = *BinaryOrErr.get().getBinary(); |
| |
| if (Archive *A = dyn_cast<Archive>(&Binary)) |
| dumpArchive(A); |
| else if (ObjectFile *O = dyn_cast<ObjectFile>(&Binary)) |
| dumpObject(O); |
| else if (MachOUniversalBinary *UB = dyn_cast<MachOUniversalBinary>(&Binary)) |
| parseInputMachO(UB); |
| else |
| report_error(file, object_error::invalid_file_type); |
| } |
| |
| int main(int argc, char **argv) { |
| InitLLVM X(argc, argv); |
| |
| // Initialize targets and assembly printers/parsers. |
| llvm::InitializeAllTargetInfos(); |
| llvm::InitializeAllTargetMCs(); |
| llvm::InitializeAllDisassemblers(); |
| |
| // Register the target printer for --version. |
| cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); |
| |
| cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n"); |
| |
| ToolName = argv[0]; |
| |
| // Defaults to a.out if no filenames specified. |
| if (InputFilenames.empty()) |
| InputFilenames.push_back("a.out"); |
| |
| if (AllHeaders) |
| ArchiveHeaders = FileHeaders = PrivateHeaders = Relocations = |
| SectionHeaders = SymbolTable = true; |
| |
| if (DisassembleAll || PrintSource || PrintLines) |
| Disassemble = true; |
| |
| if (!Disassemble |
| && !Relocations |
| && !DynamicRelocations |
| && !SectionHeaders |
| && !SectionContents |
| && !SymbolTable |
| && !UnwindInfo |
| && !PrivateHeaders |
| && !FileHeaders |
| && !FirstPrivateHeader |
| && !ExportsTrie |
| && !Rebase |
| && !Bind |
| && !LazyBind |
| && !WeakBind |
| && !RawClangAST |
| && !(UniversalHeaders && MachOOpt) |
| && !ArchiveHeaders |
| && !(IndirectSymbols && MachOOpt) |
| && !(DataInCode && MachOOpt) |
| && !(LinkOptHints && MachOOpt) |
| && !(InfoPlist && MachOOpt) |
| && !(DylibsUsed && MachOOpt) |
| && !(DylibId && MachOOpt) |
| && !(ObjcMetaData && MachOOpt) |
| && !(!FilterSections.empty() && MachOOpt) |
| && !PrintFaultMaps |
| && DwarfDumpType == DIDT_Null) { |
| cl::PrintHelpMessage(); |
| return 2; |
| } |
| |
| DisasmFuncsSet.insert(DisassembleFunctions.begin(), |
| DisassembleFunctions.end()); |
| |
| llvm::for_each(InputFilenames, dumpInput); |
| |
| return EXIT_SUCCESS; |
| } |