+++ /dev/null
-//===-- macho-dump.cpp - Mach Object Dumping Tool -------------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This is a testing tool for use with the MC/Mach-O LLVM components.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Object/MachO.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Format.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
-#include <system_error>
-using namespace llvm;
-using namespace llvm::object;
-
-static cl::opt<std::string>
-InputFile(cl::Positional, cl::desc("<input file>"), cl::init("-"));
-
-static cl::opt<bool>
-ShowSectionData("dump-section-data", cl::desc("Dump the contents of sections"),
- cl::init(false));
-
-///
-
-static const char *ProgramName;
-
-static void Message(const char *Type, const Twine &Msg) {
- errs() << ProgramName << ": " << Type << ": " << Msg << "\n";
-}
-
-static int Error(const Twine &Msg) {
- Message("error", Msg);
- return 1;
-}
-
-static void Warning(const Twine &Msg) {
- Message("warning", Msg);
-}
-
-///
-
-static void DumpSegmentCommandData(StringRef Name,
- uint64_t VMAddr, uint64_t VMSize,
- uint64_t FileOffset, uint64_t FileSize,
- uint32_t MaxProt, uint32_t InitProt,
- uint32_t NumSections, uint32_t Flags) {
- outs() << " ('segment_name', '";
- outs().write_escaped(Name, /*UseHexEscapes=*/true) << "')\n";
- outs() << " ('vm_addr', " << VMAddr << ")\n";
- outs() << " ('vm_size', " << VMSize << ")\n";
- outs() << " ('file_offset', " << FileOffset << ")\n";
- outs() << " ('file_size', " << FileSize << ")\n";
- outs() << " ('maxprot', " << MaxProt << ")\n";
- outs() << " ('initprot', " << InitProt << ")\n";
- outs() << " ('num_sections', " << NumSections << ")\n";
- outs() << " ('flags', " << Flags << ")\n";
-}
-
-static int DumpSectionData(const MachOObjectFile &Obj, unsigned Index,
- StringRef Name,
- StringRef SegmentName, uint64_t Address,
- uint64_t Size, uint32_t Offset,
- uint32_t Align, uint32_t RelocationTableOffset,
- uint32_t NumRelocationTableEntries,
- uint32_t Flags, uint32_t Reserved1,
- uint32_t Reserved2, uint64_t Reserved3 = ~0ULL) {
- outs() << " # Section " << Index << "\n";
- outs() << " (('section_name', '";
- outs().write_escaped(Name, /*UseHexEscapes=*/true) << "')\n";
- outs() << " ('segment_name', '";
- outs().write_escaped(SegmentName, /*UseHexEscapes=*/true) << "')\n";
- outs() << " ('address', " << Address << ")\n";
- outs() << " ('size', " << Size << ")\n";
- outs() << " ('offset', " << Offset << ")\n";
- outs() << " ('alignment', " << Align << ")\n";
- outs() << " ('reloc_offset', " << RelocationTableOffset << ")\n";
- outs() << " ('num_reloc', " << NumRelocationTableEntries << ")\n";
- outs() << " ('flags', " << format("0x%x", Flags) << ")\n";
- outs() << " ('reserved1', " << Reserved1 << ")\n";
- outs() << " ('reserved2', " << Reserved2 << ")\n";
- if (Reserved3 != ~0ULL)
- outs() << " ('reserved3', " << Reserved3 << ")\n";
- outs() << " ),\n";
-
- // Dump the relocation entries.
- outs() << " ('_relocations', [\n";
- unsigned RelNum = 0;
- for (relocation_iterator I = Obj.section_rel_begin(Index),
- E = Obj.section_rel_end(Index);
- I != E; ++I, ++RelNum) {
- MachO::any_relocation_info RE = Obj.getRelocation(I->getRawDataRefImpl());
- outs() << " # Relocation " << RelNum << "\n";
- outs() << " (('word-0', " << format("0x%x", RE.r_word0) << "),\n";
- outs() << " ('word-1', " << format("0x%x", RE.r_word1) << ")),\n";
- }
- outs() << " ])\n";
-
- // Dump the section data, if requested.
- if (ShowSectionData) {
- outs() << " ('_section_data', '";
- StringRef Data = Obj.getData().substr(Offset, Size);
- for (unsigned i = 0; i != Data.size(); ++i) {
- if (i && (i % 4) == 0)
- outs() << ' ';
- outs() << hexdigit((Data[i] >> 4) & 0xF, /*LowerCase=*/true);
- outs() << hexdigit((Data[i] >> 0) & 0xF, /*LowerCase=*/true);
- }
- outs() << "')\n";
- }
-
- return 0;
-}
-
-static int DumpSegmentCommand(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- MachO::segment_command SLC = Obj.getSegmentLoadCommand(LCI);
-
- DumpSegmentCommandData(StringRef(SLC.segname, 16), SLC.vmaddr,
- SLC.vmsize, SLC.fileoff, SLC.filesize,
- SLC.maxprot, SLC.initprot, SLC.nsects, SLC.flags);
-
- // Dump the sections.
- outs() << " ('sections', [\n";
- for (unsigned i = 0; i != SLC.nsects; ++i) {
- MachO::section Sect = Obj.getSection(LCI, i);
- DumpSectionData(Obj, i, StringRef(Sect.sectname, 16),
- StringRef(Sect.segname, 16), Sect.addr,
- Sect.size, Sect.offset, Sect.align,
- Sect.reloff, Sect.nreloc, Sect.flags,
- Sect.reserved1, Sect.reserved2);
- }
- outs() << " ])\n";
-
- return 0;
-}
-
-static int DumpSegment64Command(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- MachO::segment_command_64 SLC = Obj.getSegment64LoadCommand(LCI);
- DumpSegmentCommandData(StringRef(SLC.segname, 16), SLC.vmaddr,
- SLC.vmsize, SLC.fileoff, SLC.filesize,
- SLC.maxprot, SLC.initprot, SLC.nsects, SLC.flags);
-
- // Dump the sections.
- outs() << " ('sections', [\n";
- for (unsigned i = 0; i != SLC.nsects; ++i) {
- MachO::section_64 Sect = Obj.getSection64(LCI, i);
-
- DumpSectionData(Obj, i, StringRef(Sect.sectname, 16),
- StringRef(Sect.segname, 16), Sect.addr,
- Sect.size, Sect.offset, Sect.align,
- Sect.reloff, Sect.nreloc, Sect.flags,
- Sect.reserved1, Sect.reserved2,
- Sect.reserved3);
- }
- outs() << " ])\n";
-
- return 0;
-}
-
-static void DumpSymbolTableEntryData(const MachOObjectFile &Obj,
- unsigned Index, uint32_t StringIndex,
- uint8_t Type, uint8_t SectionIndex,
- uint16_t Flags, uint64_t Value,
- StringRef StringTable) {
- const char *Name = &StringTable.data()[StringIndex];
- outs() << " # Symbol " << Index << "\n";
- outs() << " (('n_strx', " << StringIndex << ")\n";
- outs() << " ('n_type', " << format("0x%x", Type) << ")\n";
- outs() << " ('n_sect', " << uint32_t(SectionIndex) << ")\n";
- outs() << " ('n_desc', " << Flags << ")\n";
- outs() << " ('n_value', " << Value << ")\n";
- outs() << " ('_string', '" << Name << "')\n";
- outs() << " ),\n";
-}
-
-static int DumpSymtabCommand(const MachOObjectFile &Obj) {
- MachO::symtab_command SLC = Obj.getSymtabLoadCommand();
-
- outs() << " ('symoff', " << SLC.symoff << ")\n";
- outs() << " ('nsyms', " << SLC.nsyms << ")\n";
- outs() << " ('stroff', " << SLC.stroff << ")\n";
- outs() << " ('strsize', " << SLC.strsize << ")\n";
-
- // Dump the string data.
- outs() << " ('_string_data', '";
- StringRef StringTable = Obj.getStringTableData();
- outs().write_escaped(StringTable,
- /*UseHexEscapes=*/true) << "')\n";
-
- // Dump the symbol table.
- outs() << " ('_symbols', [\n";
- unsigned SymNum = 0;
- for (const SymbolRef &Symbol : Obj.symbols()) {
- DataRefImpl DRI = Symbol.getRawDataRefImpl();
- if (Obj.is64Bit()) {
- MachO::nlist_64 STE = Obj.getSymbol64TableEntry(DRI);
- DumpSymbolTableEntryData(Obj, SymNum, STE.n_strx, STE.n_type,
- STE.n_sect, STE.n_desc, STE.n_value,
- StringTable);
- } else {
- MachO::nlist STE = Obj.getSymbolTableEntry(DRI);
- DumpSymbolTableEntryData(Obj, SymNum, STE.n_strx, STE.n_type,
- STE.n_sect, STE.n_desc, STE.n_value,
- StringTable);
- }
- SymNum++;
- }
- outs() << " ])\n";
-
- return 0;
-}
-
-static int DumpDysymtabCommand(const MachOObjectFile &Obj) {
- MachO::dysymtab_command DLC = Obj.getDysymtabLoadCommand();
-
- outs() << " ('ilocalsym', " << DLC.ilocalsym << ")\n";
- outs() << " ('nlocalsym', " << DLC.nlocalsym << ")\n";
- outs() << " ('iextdefsym', " << DLC.iextdefsym << ")\n";
- outs() << " ('nextdefsym', " << DLC.nextdefsym << ")\n";
- outs() << " ('iundefsym', " << DLC.iundefsym << ")\n";
- outs() << " ('nundefsym', " << DLC.nundefsym << ")\n";
- outs() << " ('tocoff', " << DLC.tocoff << ")\n";
- outs() << " ('ntoc', " << DLC.ntoc << ")\n";
- outs() << " ('modtaboff', " << DLC.modtaboff << ")\n";
- outs() << " ('nmodtab', " << DLC.nmodtab << ")\n";
- outs() << " ('extrefsymoff', " << DLC.extrefsymoff << ")\n";
- outs() << " ('nextrefsyms', " << DLC.nextrefsyms << ")\n";
- outs() << " ('indirectsymoff', " << DLC.indirectsymoff << ")\n";
- outs() << " ('nindirectsyms', " << DLC.nindirectsyms << ")\n";
- outs() << " ('extreloff', " << DLC.extreloff << ")\n";
- outs() << " ('nextrel', " << DLC.nextrel << ")\n";
- outs() << " ('locreloff', " << DLC.locreloff << ")\n";
- outs() << " ('nlocrel', " << DLC.nlocrel << ")\n";
-
- // Dump the indirect symbol table.
- outs() << " ('_indirect_symbols', [\n";
- for (unsigned i = 0; i != DLC.nindirectsyms; ++i) {
- uint32_t ISTE = Obj.getIndirectSymbolTableEntry(DLC, i);
- outs() << " # Indirect Symbol " << i << "\n";
- outs() << " (('symbol_index', " << format("0x%x", ISTE) << "),),\n";
- }
- outs() << " ])\n";
-
- return 0;
-}
-
-static int
-DumpLinkeditDataCommand(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- MachO::linkedit_data_command LLC = Obj.getLinkeditDataLoadCommand(LCI);
- outs() << " ('dataoff', " << LLC.dataoff << ")\n"
- << " ('datasize', " << LLC.datasize << ")\n"
- << " ('_addresses', [\n";
-
- SmallVector<uint64_t, 8> Addresses;
- Obj.ReadULEB128s(LLC.dataoff, Addresses);
- for (unsigned i = 0, e = Addresses.size(); i != e; ++i)
- outs() << " # Address " << i << '\n'
- << " ('address', " << format("0x%x", Addresses[i]) << "),\n";
-
- outs() << " ])\n";
-
- return 0;
-}
-
-static int
-DumpDataInCodeDataCommand(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- MachO::linkedit_data_command LLC = Obj.getLinkeditDataLoadCommand(LCI);
- outs() << " ('dataoff', " << LLC.dataoff << ")\n"
- << " ('datasize', " << LLC.datasize << ")\n"
- << " ('_data_regions', [\n";
-
- unsigned NumRegions = LLC.datasize / sizeof(MachO::data_in_code_entry);
- for (unsigned i = 0; i < NumRegions; ++i) {
- MachO::data_in_code_entry DICE= Obj.getDataInCodeTableEntry(LLC.dataoff, i);
- outs() << " # DICE " << i << "\n"
- << " ('offset', " << DICE.offset << ")\n"
- << " ('length', " << DICE.length << ")\n"
- << " ('kind', " << DICE.kind << ")\n";
- }
-
- outs() <<" ])\n";
-
- return 0;
-}
-
-static int
-DumpLinkerOptionsCommand(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- MachO::linker_option_command LOLC = Obj.getLinkerOptionLoadCommand(LCI);
- outs() << " ('count', " << LOLC.count << ")\n"
- << " ('_strings', [\n";
-
- uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_option_command);
- const char *P = LCI.Ptr + sizeof(MachO::linker_option_command);
- StringRef Data(P, DataSize);
- for (unsigned i = 0; i != LOLC.count; ++i) {
- std::pair<StringRef,StringRef> Split = Data.split('\0');
- outs() << "\t\"";
- outs().write_escaped(Split.first);
- outs() << "\",\n";
- Data = Split.second;
- }
- outs() <<" ])\n";
-
- return 0;
-}
-
-static int
-DumpVersionMin(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- MachO::version_min_command VMLC = Obj.getVersionMinLoadCommand(LCI);
- outs() << " ('version, " << VMLC.version << ")\n"
- << " ('sdk, " << VMLC.sdk << ")\n";
- return 0;
-}
-
-static int
-DumpDylibID(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- MachO::dylib_command DLLC = Obj.getDylibIDLoadCommand(LCI);
- outs() << " ('install_name', '" << LCI.Ptr + DLLC.dylib.name << "')\n"
- << " ('timestamp, " << DLLC.dylib.timestamp << ")\n"
- << " ('cur_version, " << DLLC.dylib.current_version << ")\n"
- << " ('compat_version, " << DLLC.dylib.compatibility_version << ")\n";
- return 0;
-}
-
-static int DumpLoadCommand(const MachOObjectFile &Obj,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- switch (LCI.C.cmd) {
- case MachO::LC_SEGMENT:
- return DumpSegmentCommand(Obj, LCI);
- case MachO::LC_SEGMENT_64:
- return DumpSegment64Command(Obj, LCI);
- case MachO::LC_SYMTAB:
- return DumpSymtabCommand(Obj);
- case MachO::LC_DYSYMTAB:
- return DumpDysymtabCommand(Obj);
- case MachO::LC_CODE_SIGNATURE:
- case MachO::LC_SEGMENT_SPLIT_INFO:
- case MachO::LC_FUNCTION_STARTS:
- return DumpLinkeditDataCommand(Obj, LCI);
- case MachO::LC_DATA_IN_CODE:
- return DumpDataInCodeDataCommand(Obj, LCI);
- case MachO::LC_LINKER_OPTION:
- return DumpLinkerOptionsCommand(Obj, LCI);
- case MachO::LC_VERSION_MIN_IPHONEOS:
- case MachO::LC_VERSION_MIN_MACOSX:
- return DumpVersionMin(Obj, LCI);
- case MachO::LC_ID_DYLIB:
- return DumpDylibID(Obj, LCI);
- default:
- Warning("unknown load command: " + Twine(LCI.C.cmd));
- return 0;
- }
-}
-
-static int DumpLoadCommand(const MachOObjectFile &Obj, unsigned Index,
- const MachOObjectFile::LoadCommandInfo &LCI) {
- outs() << " # Load Command " << Index << "\n"
- << " (('command', " << LCI.C.cmd << ")\n"
- << " ('size', " << LCI.C.cmdsize << ")\n";
- int Res = DumpLoadCommand(Obj, LCI);
- outs() << " ),\n";
- return Res;
-}
-
-static void printHeader(const MachOObjectFile *Obj,
- const MachO::mach_header &Header) {
- outs() << "('cputype', " << Header.cputype << ")\n";
- outs() << "('cpusubtype', " << Header.cpusubtype << ")\n";
- outs() << "('filetype', " << Header.filetype << ")\n";
- outs() << "('num_load_commands', " << Header.ncmds << ")\n";
- outs() << "('load_commands_size', " << Header.sizeofcmds << ")\n";
- outs() << "('flag', " << Header.flags << ")\n";
-
- // Print extended header if 64-bit.
- if (Obj->is64Bit()) {
- const MachO::mach_header_64 *Header64 =
- reinterpret_cast<const MachO::mach_header_64 *>(&Header);
- outs() << "('reserved', " << Header64->reserved << ")\n";
- }
-}
-
-int main(int argc, char **argv) {
- ProgramName = argv[0];
- llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
-
- cl::ParseCommandLineOptions(argc, argv, "llvm Mach-O dumping tool\n");
-
- ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(InputFile);
- if (std::error_code EC = BinaryOrErr.getError())
- return Error("unable to read input: '" + EC.message() + "'");
- Binary &Binary = *BinaryOrErr.get().getBinary();
-
- const MachOObjectFile *InputObject = dyn_cast<MachOObjectFile>(&Binary);
- if (!InputObject)
- return Error("Not a MachO object");
-
- // Print the header
- MachO::mach_header_64 Header64;
- MachO::mach_header *Header = reinterpret_cast<MachO::mach_header*>(&Header64);
- if (InputObject->is64Bit())
- Header64 = InputObject->getHeader64();
- else
- *Header = InputObject->getHeader();
- printHeader(InputObject, *Header);
-
- // Print the load commands.
- int Res = 0;
- unsigned Index = 0;
- outs() << "('load_commands', [\n";
- for (const auto &Load : InputObject->load_commands()) {
- if (DumpLoadCommand(*InputObject, Index++, Load))
- break;
- }
- outs() << "])\n";
-
- return Res;
-}
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