//
//===----------------------------------------------------------------------===//
+#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_options_command LOLC = Obj.getLinkerOptionsLoadCommand(LCI);
+ outs() << " ('count', " << LOLC.count << ")\n"
+ << " ('_strings', [\n";
+
+ uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_options_command);
+ const char *P = LCI.Ptr + sizeof(MachO::linker_options_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"
+ << " ('reserved, " << VMLC.reserved << ")\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,
+ 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_OPTIONS:
+ 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,
+ 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) {
- const char *ProgramName = argv[0];
+ ProgramName = argv[0];
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, "llvm Mach-O dumping tool\n");
- errs() << ProgramName << ": " << "not yet implemented!" << "\n";
- return 1;
+ ErrorOr<Binary *> BinaryOrErr = createBinary(InputFile);
+ if (std::error_code EC = BinaryOrErr.getError())
+ return Error("unable to read input: '" + EC.message() + "'");
+ std::unique_ptr<Binary> Binary(BinaryOrErr.get());
+
+ const MachOObjectFile *InputObject = dyn_cast<MachOObjectFile>(Binary.get());
+ 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;
+ MachOObjectFile::LoadCommandInfo Command =
+ InputObject->getFirstLoadCommandInfo();
+ outs() << "('load_commands', [\n";
+ for (unsigned i = 0; ; ++i) {
+ if (DumpLoadCommand(*InputObject, i, Command))
+ break;
+
+ if (i == Header->ncmds - 1)
+ break;
+ Command = InputObject->getNextLoadCommandInfo(Command);
+ }
+ outs() << "])\n";
+
+ return Res;
}
projects / oota-llvm.git / blobdiff