| //===- MachODumper.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 file implements the MachO-specific dumper for llvm-readobj. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ObjDumper.h" |
| #include "StackMapPrinter.h" |
| #include "llvm-readobj.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Object/MachO.h" |
| #include "llvm/Support/Casting.h" |
| #include "llvm/Support/ScopedPrinter.h" |
| |
| using namespace llvm; |
| using namespace object; |
| |
| namespace { |
| |
| class MachODumper : public ObjDumper { |
| public: |
| MachODumper(const MachOObjectFile *Obj, ScopedPrinter &Writer) |
| : ObjDumper(Writer, Obj->getFileName()), Obj(Obj) {} |
| |
| void printFileHeaders() override; |
| void printSectionHeaders() override; |
| void printRelocations() override; |
| void printUnwindInfo() override; |
| void printStackMap() const override; |
| |
| void printNeededLibraries() override; |
| |
| // MachO-specific. |
| void printMachODataInCode() override; |
| void printMachOVersionMin() override; |
| void printMachODysymtab() override; |
| void printMachOSegment() override; |
| void printMachOIndirectSymbols() override; |
| void printMachOLinkerOptions () override; |
| |
| private: |
| template<class MachHeader> |
| void printFileHeaders(const MachHeader &Header); |
| |
| void printSymbols() override; |
| void printDynamicSymbols() override; |
| void printSymbol(const SymbolRef &Symbol); |
| |
| void printRelocation(const RelocationRef &Reloc); |
| |
| void printRelocation(const MachOObjectFile *Obj, const RelocationRef &Reloc); |
| |
| void printSectionHeaders(const MachOObjectFile *Obj); |
| |
| const MachOObjectFile *Obj; |
| }; |
| |
| } // namespace |
| |
| |
| namespace llvm { |
| |
| std::unique_ptr<ObjDumper> createMachODumper(const object::MachOObjectFile &Obj, |
| ScopedPrinter &Writer) { |
| return std::make_unique<MachODumper>(&Obj, Writer); |
| } |
| |
| } // namespace llvm |
| |
| static const EnumEntry<uint32_t> MachOMagics[] = { |
| { "Magic", MachO::MH_MAGIC }, |
| { "Cigam", MachO::MH_CIGAM }, |
| { "Magic64", MachO::MH_MAGIC_64 }, |
| { "Cigam64", MachO::MH_CIGAM_64 }, |
| { "FatMagic", MachO::FAT_MAGIC }, |
| { "FatCigam", MachO::FAT_CIGAM }, |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderFileTypes[] = { |
| { "Relocatable", MachO::MH_OBJECT }, |
| { "Executable", MachO::MH_EXECUTE }, |
| { "FixedVMLibrary", MachO::MH_FVMLIB }, |
| { "Core", MachO::MH_CORE }, |
| { "PreloadedExecutable", MachO::MH_PRELOAD }, |
| { "DynamicLibrary", MachO::MH_DYLIB }, |
| { "DynamicLinker", MachO::MH_DYLINKER }, |
| { "Bundle", MachO::MH_BUNDLE }, |
| { "DynamicLibraryStub", MachO::MH_DYLIB_STUB }, |
| { "DWARFSymbol", MachO::MH_DSYM }, |
| { "KextBundle", MachO::MH_KEXT_BUNDLE }, |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderCpuTypes[] = { |
| { "Any" , static_cast<uint32_t>(MachO::CPU_TYPE_ANY) }, |
| { "X86" , MachO::CPU_TYPE_X86 }, |
| { "X86-64" , MachO::CPU_TYPE_X86_64 }, |
| { "Mc98000" , MachO::CPU_TYPE_MC98000 }, |
| { "Arm" , MachO::CPU_TYPE_ARM }, |
| { "Arm64" , MachO::CPU_TYPE_ARM64 }, |
| { "Sparc" , MachO::CPU_TYPE_SPARC }, |
| { "PowerPC" , MachO::CPU_TYPE_POWERPC }, |
| { "PowerPC64" , MachO::CPU_TYPE_POWERPC64 }, |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX86[] = { |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_I386_ALL), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_386), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486SX), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_586), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTPRO), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M3), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M5), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON_MOBILE), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_M), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_XEON), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_M), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4_M), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM_2), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON_MP), |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX64[] = { |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_ALL), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_ARCH1), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_H), |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM[] = { |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_ALL), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V4T), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5TEJ), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_XSCALE), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7S), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7K), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6M), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7M), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7EM), |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM64[] = { |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_ALL), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_V8), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64E), |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesSPARC[] = { |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_SPARC_ALL), |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesPPC[] = { |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_ALL), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_601), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_602), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603e), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603ev), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604e), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_620), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_750), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7400), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7450), |
| LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_970), |
| }; |
| |
| static const EnumEntry<uint32_t> MachOHeaderFlags[] = { |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_NOUNDEFS), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_INCRLINK), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_DYLDLINK), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDATLOAD), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBOUND), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_SPLIT_SEGS), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_LAZY_INIT), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_TWOLEVEL), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_FORCE_FLAT), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_NOMULTIDEFS), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_NOFIXPREBINDING), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBINDABLE), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLMODSBOUND), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_SUBSECTIONS_VIA_SYMBOLS), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_CANONICAL), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_WEAK_DEFINES), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDS_TO_WEAK), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLOW_STACK_EXECUTION), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_ROOT_SAFE), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_SETUID_SAFE), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_REEXPORTED_DYLIBS), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_PIE), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_DEAD_STRIPPABLE_DYLIB), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_HAS_TLV_DESCRIPTORS), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_HEAP_EXECUTION), |
| LLVM_READOBJ_ENUM_ENT(MachO, MH_APP_EXTENSION_SAFE), |
| }; |
| |
| static const EnumEntry<unsigned> MachOSectionTypes[] = { |
| { "Regular" , MachO::S_REGULAR }, |
| { "ZeroFill" , MachO::S_ZEROFILL }, |
| { "CStringLiterals" , MachO::S_CSTRING_LITERALS }, |
| { "4ByteLiterals" , MachO::S_4BYTE_LITERALS }, |
| { "8ByteLiterals" , MachO::S_8BYTE_LITERALS }, |
| { "LiteralPointers" , MachO::S_LITERAL_POINTERS }, |
| { "NonLazySymbolPointers" , MachO::S_NON_LAZY_SYMBOL_POINTERS }, |
| { "LazySymbolPointers" , MachO::S_LAZY_SYMBOL_POINTERS }, |
| { "SymbolStubs" , MachO::S_SYMBOL_STUBS }, |
| { "ModInitFuncPointers" , MachO::S_MOD_INIT_FUNC_POINTERS }, |
| { "ModTermFuncPointers" , MachO::S_MOD_TERM_FUNC_POINTERS }, |
| { "Coalesced" , MachO::S_COALESCED }, |
| { "GBZeroFill" , MachO::S_GB_ZEROFILL }, |
| { "Interposing" , MachO::S_INTERPOSING }, |
| { "16ByteLiterals" , MachO::S_16BYTE_LITERALS }, |
| { "DTraceDOF" , MachO::S_DTRACE_DOF }, |
| { "LazyDylibSymbolPointers" , MachO::S_LAZY_DYLIB_SYMBOL_POINTERS }, |
| { "ThreadLocalRegular" , MachO::S_THREAD_LOCAL_REGULAR }, |
| { "ThreadLocalZerofill" , MachO::S_THREAD_LOCAL_ZEROFILL }, |
| { "ThreadLocalVariables" , MachO::S_THREAD_LOCAL_VARIABLES }, |
| { "ThreadLocalVariablePointers" , MachO::S_THREAD_LOCAL_VARIABLE_POINTERS }, |
| { "ThreadLocalInitFunctionPointers", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS } |
| }; |
| |
| static const EnumEntry<unsigned> MachOSectionAttributes[] = { |
| { "LocReloc" , 1 << 0 /*S_ATTR_LOC_RELOC */ }, |
| { "ExtReloc" , 1 << 1 /*S_ATTR_EXT_RELOC */ }, |
| { "SomeInstructions" , 1 << 2 /*S_ATTR_SOME_INSTRUCTIONS */ }, |
| { "Debug" , 1 << 17 /*S_ATTR_DEBUG */ }, |
| { "SelfModifyingCode", 1 << 18 /*S_ATTR_SELF_MODIFYING_CODE*/ }, |
| { "LiveSupport" , 1 << 19 /*S_ATTR_LIVE_SUPPORT */ }, |
| { "NoDeadStrip" , 1 << 20 /*S_ATTR_NO_DEAD_STRIP */ }, |
| { "StripStaticSyms" , 1 << 21 /*S_ATTR_STRIP_STATIC_SYMS */ }, |
| { "NoTOC" , 1 << 22 /*S_ATTR_NO_TOC */ }, |
| { "PureInstructions" , 1 << 23 /*S_ATTR_PURE_INSTRUCTIONS */ }, |
| }; |
| |
| static const EnumEntry<unsigned> MachOSymbolRefTypes[] = { |
| { "UndefinedNonLazy", 0 }, |
| { "ReferenceFlagUndefinedLazy", 1 }, |
| { "ReferenceFlagDefined", 2 }, |
| { "ReferenceFlagPrivateDefined", 3 }, |
| { "ReferenceFlagPrivateUndefinedNonLazy", 4 }, |
| { "ReferenceFlagPrivateUndefinedLazy", 5 } |
| }; |
| |
| static const EnumEntry<unsigned> MachOSymbolFlags[] = { |
| { "ReferencedDynamically", 0x10 }, |
| { "NoDeadStrip", 0x20 }, |
| { "WeakRef", 0x40 }, |
| { "WeakDef", 0x80 }, |
| { "AltEntry", 0x200 }, |
| }; |
| |
| static const EnumEntry<unsigned> MachOSymbolTypes[] = { |
| { "Undef", 0x0 }, |
| { "Abs", 0x2 }, |
| { "Indirect", 0xA }, |
| { "PreboundUndef", 0xC }, |
| { "Section", 0xE } |
| }; |
| |
| namespace { |
| struct MachOSection { |
| ArrayRef<char> Name; |
| ArrayRef<char> SegmentName; |
| uint64_t Address; |
| uint64_t Size; |
| uint32_t Offset; |
| uint32_t Alignment; |
| uint32_t RelocationTableOffset; |
| uint32_t NumRelocationTableEntries; |
| uint32_t Flags; |
| uint32_t Reserved1; |
| uint32_t Reserved2; |
| uint32_t Reserved3; |
| }; |
| |
| struct MachOSegment { |
| std::string CmdName; |
| std::string SegName; |
| uint64_t cmdsize; |
| uint64_t vmaddr; |
| uint64_t vmsize; |
| uint64_t fileoff; |
| uint64_t filesize; |
| uint32_t maxprot; |
| uint32_t initprot; |
| uint32_t nsects; |
| uint32_t flags; |
| }; |
| |
| struct MachOSymbol { |
| uint32_t StringIndex; |
| uint8_t Type; |
| uint8_t SectionIndex; |
| uint16_t Flags; |
| uint64_t Value; |
| }; |
| } |
| |
| static std::string getMask(uint32_t prot) |
| { |
| // TODO (davide): This always assumes prot is valid. |
| // Catch mistakes and report if needed. |
| std::string Prot; |
| Prot = ""; |
| Prot += (prot & MachO::VM_PROT_READ) ? "r" : "-"; |
| Prot += (prot & MachO::VM_PROT_WRITE) ? "w" : "-"; |
| Prot += (prot & MachO::VM_PROT_EXECUTE) ? "x" : "-"; |
| return Prot; |
| } |
| |
| static void getSection(const MachOObjectFile *Obj, |
| DataRefImpl Sec, |
| MachOSection &Section) { |
| if (!Obj->is64Bit()) { |
| MachO::section Sect = Obj->getSection(Sec); |
| Section.Address = Sect.addr; |
| Section.Size = Sect.size; |
| Section.Offset = Sect.offset; |
| Section.Alignment = Sect.align; |
| Section.RelocationTableOffset = Sect.reloff; |
| Section.NumRelocationTableEntries = Sect.nreloc; |
| Section.Flags = Sect.flags; |
| Section.Reserved1 = Sect.reserved1; |
| Section.Reserved2 = Sect.reserved2; |
| return; |
| } |
| MachO::section_64 Sect = Obj->getSection64(Sec); |
| Section.Address = Sect.addr; |
| Section.Size = Sect.size; |
| Section.Offset = Sect.offset; |
| Section.Alignment = Sect.align; |
| Section.RelocationTableOffset = Sect.reloff; |
| Section.NumRelocationTableEntries = Sect.nreloc; |
| Section.Flags = Sect.flags; |
| Section.Reserved1 = Sect.reserved1; |
| Section.Reserved2 = Sect.reserved2; |
| Section.Reserved3 = Sect.reserved3; |
| } |
| |
| static void getSegment(const MachOObjectFile *Obj, |
| const MachOObjectFile::LoadCommandInfo &L, |
| MachOSegment &Segment) { |
| if (!Obj->is64Bit()) { |
| MachO::segment_command SC = Obj->getSegmentLoadCommand(L); |
| Segment.CmdName = "LC_SEGMENT"; |
| Segment.SegName = SC.segname; |
| Segment.cmdsize = SC.cmdsize; |
| Segment.vmaddr = SC.vmaddr; |
| Segment.vmsize = SC.vmsize; |
| Segment.fileoff = SC.fileoff; |
| Segment.filesize = SC.filesize; |
| Segment.maxprot = SC.maxprot; |
| Segment.initprot = SC.initprot; |
| Segment.nsects = SC.nsects; |
| Segment.flags = SC.flags; |
| return; |
| } |
| MachO::segment_command_64 SC = Obj->getSegment64LoadCommand(L); |
| Segment.CmdName = "LC_SEGMENT_64"; |
| Segment.SegName = SC.segname; |
| Segment.cmdsize = SC.cmdsize; |
| Segment.vmaddr = SC.vmaddr; |
| Segment.vmsize = SC.vmsize; |
| Segment.fileoff = SC.fileoff; |
| Segment.filesize = SC.filesize; |
| Segment.maxprot = SC.maxprot; |
| Segment.initprot = SC.initprot; |
| Segment.nsects = SC.nsects; |
| Segment.flags = SC.flags; |
| } |
| |
| static void getSymbol(const MachOObjectFile *Obj, |
| DataRefImpl DRI, |
| MachOSymbol &Symbol) { |
| if (!Obj->is64Bit()) { |
| MachO::nlist Entry = Obj->getSymbolTableEntry(DRI); |
| Symbol.StringIndex = Entry.n_strx; |
| Symbol.Type = Entry.n_type; |
| Symbol.SectionIndex = Entry.n_sect; |
| Symbol.Flags = Entry.n_desc; |
| Symbol.Value = Entry.n_value; |
| return; |
| } |
| MachO::nlist_64 Entry = Obj->getSymbol64TableEntry(DRI); |
| Symbol.StringIndex = Entry.n_strx; |
| Symbol.Type = Entry.n_type; |
| Symbol.SectionIndex = Entry.n_sect; |
| Symbol.Flags = Entry.n_desc; |
| Symbol.Value = Entry.n_value; |
| } |
| |
| void MachODumper::printFileHeaders() { |
| DictScope H(W, "MachHeader"); |
| if (!Obj->is64Bit()) { |
| printFileHeaders(Obj->getHeader()); |
| } else { |
| printFileHeaders(Obj->getHeader64()); |
| W.printHex("Reserved", Obj->getHeader64().reserved); |
| } |
| } |
| |
| template<class MachHeader> |
| void MachODumper::printFileHeaders(const MachHeader &Header) { |
| W.printEnum("Magic", Header.magic, makeArrayRef(MachOMagics)); |
| W.printEnum("CpuType", Header.cputype, makeArrayRef(MachOHeaderCpuTypes)); |
| uint32_t subtype = Header.cpusubtype & ~MachO::CPU_SUBTYPE_MASK; |
| switch (Header.cputype) { |
| case MachO::CPU_TYPE_X86: |
| W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX86)); |
| break; |
| case MachO::CPU_TYPE_X86_64: |
| W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX64)); |
| break; |
| case MachO::CPU_TYPE_ARM: |
| W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM)); |
| break; |
| case MachO::CPU_TYPE_POWERPC: |
| W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesPPC)); |
| break; |
| case MachO::CPU_TYPE_SPARC: |
| W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesSPARC)); |
| break; |
| case MachO::CPU_TYPE_ARM64: |
| W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM64)); |
| break; |
| case MachO::CPU_TYPE_POWERPC64: |
| default: |
| W.printHex("CpuSubtype", subtype); |
| } |
| W.printEnum("FileType", Header.filetype, makeArrayRef(MachOHeaderFileTypes)); |
| W.printNumber("NumOfLoadCommands", Header.ncmds); |
| W.printNumber("SizeOfLoadCommands", Header.sizeofcmds); |
| W.printFlags("Flags", Header.flags, makeArrayRef(MachOHeaderFlags)); |
| } |
| |
| void MachODumper::printSectionHeaders() { return printSectionHeaders(Obj); } |
| |
| void MachODumper::printSectionHeaders(const MachOObjectFile *Obj) { |
| ListScope Group(W, "Sections"); |
| |
| int SectionIndex = -1; |
| for (const SectionRef &Section : Obj->sections()) { |
| ++SectionIndex; |
| |
| MachOSection MOSection; |
| getSection(Obj, Section.getRawDataRefImpl(), MOSection); |
| DataRefImpl DR = Section.getRawDataRefImpl(); |
| StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName()); |
| ArrayRef<char> RawName = Obj->getSectionRawName(DR); |
| StringRef SegmentName = Obj->getSectionFinalSegmentName(DR); |
| ArrayRef<char> RawSegmentName = Obj->getSectionRawFinalSegmentName(DR); |
| |
| DictScope SectionD(W, "Section"); |
| W.printNumber("Index", SectionIndex); |
| W.printBinary("Name", Name, RawName); |
| W.printBinary("Segment", SegmentName, RawSegmentName); |
| W.printHex("Address", MOSection.Address); |
| W.printHex("Size", MOSection.Size); |
| W.printNumber("Offset", MOSection.Offset); |
| W.printNumber("Alignment", MOSection.Alignment); |
| W.printHex("RelocationOffset", MOSection.RelocationTableOffset); |
| W.printNumber("RelocationCount", MOSection.NumRelocationTableEntries); |
| W.printEnum("Type", MOSection.Flags & 0xFF, |
| makeArrayRef(MachOSectionTypes)); |
| W.printFlags("Attributes", MOSection.Flags >> 8, |
| makeArrayRef(MachOSectionAttributes)); |
| W.printHex("Reserved1", MOSection.Reserved1); |
| W.printHex("Reserved2", MOSection.Reserved2); |
| if (Obj->is64Bit()) |
| W.printHex("Reserved3", MOSection.Reserved3); |
| |
| if (opts::SectionRelocations) { |
| ListScope D(W, "Relocations"); |
| for (const RelocationRef &Reloc : Section.relocations()) |
| printRelocation(Reloc); |
| } |
| |
| if (opts::SectionSymbols) { |
| ListScope D(W, "Symbols"); |
| for (const SymbolRef &Symbol : Obj->symbols()) { |
| if (!Section.containsSymbol(Symbol)) |
| continue; |
| |
| printSymbol(Symbol); |
| } |
| } |
| |
| if (opts::SectionData && !Section.isBSS()) |
| W.printBinaryBlock("SectionData", unwrapOrError(Obj->getFileName(), |
| Section.getContents())); |
| } |
| } |
| |
| void MachODumper::printRelocations() { |
| ListScope D(W, "Relocations"); |
| |
| std::error_code EC; |
| for (const SectionRef &Section : Obj->sections()) { |
| StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName()); |
| bool PrintedGroup = false; |
| for (const RelocationRef &Reloc : Section.relocations()) { |
| if (!PrintedGroup) { |
| W.startLine() << "Section " << Name << " {\n"; |
| W.indent(); |
| PrintedGroup = true; |
| } |
| |
| printRelocation(Reloc); |
| } |
| |
| if (PrintedGroup) { |
| W.unindent(); |
| W.startLine() << "}\n"; |
| } |
| } |
| } |
| |
| void MachODumper::printRelocation(const RelocationRef &Reloc) { |
| return printRelocation(Obj, Reloc); |
| } |
| |
| void MachODumper::printRelocation(const MachOObjectFile *Obj, |
| const RelocationRef &Reloc) { |
| uint64_t Offset = Reloc.getOffset(); |
| SmallString<32> RelocName; |
| Reloc.getTypeName(RelocName); |
| |
| DataRefImpl DR = Reloc.getRawDataRefImpl(); |
| MachO::any_relocation_info RE = Obj->getRelocation(DR); |
| bool IsScattered = Obj->isRelocationScattered(RE); |
| bool IsExtern = !IsScattered && Obj->getPlainRelocationExternal(RE); |
| |
| StringRef TargetName; |
| if (IsExtern) { |
| symbol_iterator Symbol = Reloc.getSymbol(); |
| if (Symbol != Obj->symbol_end()) { |
| Expected<StringRef> TargetNameOrErr = Symbol->getName(); |
| if (!TargetNameOrErr) |
| reportError(TargetNameOrErr.takeError(), Obj->getFileName()); |
| TargetName = *TargetNameOrErr; |
| } |
| } else if (!IsScattered) { |
| section_iterator SecI = Obj->getRelocationSection(DR); |
| if (SecI != Obj->section_end()) |
| TargetName = unwrapOrError(Obj->getFileName(), SecI->getName()); |
| } |
| if (TargetName.empty()) |
| TargetName = "-"; |
| |
| if (opts::ExpandRelocs) { |
| DictScope Group(W, "Relocation"); |
| W.printHex("Offset", Offset); |
| W.printNumber("PCRel", Obj->getAnyRelocationPCRel(RE)); |
| W.printNumber("Length", Obj->getAnyRelocationLength(RE)); |
| W.printNumber("Type", RelocName, Obj->getAnyRelocationType(RE)); |
| if (IsScattered) { |
| W.printHex("Value", Obj->getScatteredRelocationValue(RE)); |
| } else { |
| const char *Kind = IsExtern ? "Symbol" : "Section"; |
| W.printNumber(Kind, TargetName, Obj->getPlainRelocationSymbolNum(RE)); |
| } |
| } else { |
| SmallString<32> SymbolNameOrOffset("0x"); |
| if (IsScattered) { |
| // Scattered relocations don't really have an associated symbol for some |
| // reason, even if one exists in the symtab at the correct address. |
| SymbolNameOrOffset += utohexstr(Obj->getScatteredRelocationValue(RE)); |
| } else { |
| SymbolNameOrOffset = TargetName; |
| } |
| |
| raw_ostream& OS = W.startLine(); |
| OS << W.hex(Offset) |
| << " " << Obj->getAnyRelocationPCRel(RE) |
| << " " << Obj->getAnyRelocationLength(RE); |
| if (IsScattered) |
| OS << " n/a"; |
| else |
| OS << " " << Obj->getPlainRelocationExternal(RE); |
| OS << " " << RelocName |
| << " " << IsScattered |
| << " " << SymbolNameOrOffset |
| << "\n"; |
| } |
| } |
| |
| void MachODumper::printSymbols() { |
| ListScope Group(W, "Symbols"); |
| |
| for (const SymbolRef &Symbol : Obj->symbols()) { |
| printSymbol(Symbol); |
| } |
| } |
| |
| void MachODumper::printDynamicSymbols() { |
| ListScope Group(W, "DynamicSymbols"); |
| } |
| |
| void MachODumper::printSymbol(const SymbolRef &Symbol) { |
| StringRef SymbolName; |
| Expected<StringRef> SymbolNameOrErr = Symbol.getName(); |
| if (!SymbolNameOrErr) { |
| // TODO: Actually report errors helpfully. |
| consumeError(SymbolNameOrErr.takeError()); |
| } else |
| SymbolName = *SymbolNameOrErr; |
| |
| MachOSymbol MOSymbol; |
| getSymbol(Obj, Symbol.getRawDataRefImpl(), MOSymbol); |
| |
| StringRef SectionName = ""; |
| // Don't ask a Mach-O STABS symbol for its section unless we know that |
| // STAB symbol's section field refers to a valid section index. Otherwise |
| // the symbol may error trying to load a section that does not exist. |
| // TODO: Add a whitelist of STABS symbol types that contain valid section |
| // indices. |
| if (!(MOSymbol.Type & MachO::N_STAB)) { |
| Expected<section_iterator> SecIOrErr = Symbol.getSection(); |
| if (!SecIOrErr) |
| reportError(SecIOrErr.takeError(), Obj->getFileName()); |
| |
| section_iterator SecI = *SecIOrErr; |
| if (SecI != Obj->section_end()) |
| SectionName = unwrapOrError(Obj->getFileName(), SecI->getName()); |
| } |
| |
| DictScope D(W, "Symbol"); |
| W.printNumber("Name", SymbolName, MOSymbol.StringIndex); |
| if (MOSymbol.Type & MachO::N_STAB) { |
| W.printHex("Type", "SymDebugTable", MOSymbol.Type); |
| } else { |
| if (MOSymbol.Type & MachO::N_PEXT) |
| W.startLine() << "PrivateExtern\n"; |
| if (MOSymbol.Type & MachO::N_EXT) |
| W.startLine() << "Extern\n"; |
| W.printEnum("Type", uint8_t(MOSymbol.Type & MachO::N_TYPE), |
| makeArrayRef(MachOSymbolTypes)); |
| } |
| W.printHex("Section", SectionName, MOSymbol.SectionIndex); |
| W.printEnum("RefType", static_cast<uint16_t>(MOSymbol.Flags & 0xF), |
| makeArrayRef(MachOSymbolRefTypes)); |
| W.printFlags("Flags", static_cast<uint16_t>(MOSymbol.Flags & ~0xF), |
| makeArrayRef(MachOSymbolFlags)); |
| W.printHex("Value", MOSymbol.Value); |
| } |
| |
| void MachODumper::printUnwindInfo() { |
| W.startLine() << "UnwindInfo not implemented.\n"; |
| } |
| |
| void MachODumper::printStackMap() const { |
| object::SectionRef StackMapSection; |
| for (auto Sec : Obj->sections()) { |
| StringRef Name; |
| if (Expected<StringRef> NameOrErr = Sec.getName()) |
| Name = *NameOrErr; |
| else |
| consumeError(NameOrErr.takeError()); |
| |
| if (Name == "__llvm_stackmaps") { |
| StackMapSection = Sec; |
| break; |
| } |
| } |
| |
| if (StackMapSection == object::SectionRef()) |
| return; |
| |
| StringRef StackMapContents = |
| unwrapOrError(Obj->getFileName(), StackMapSection.getContents()); |
| ArrayRef<uint8_t> StackMapContentsArray = |
| arrayRefFromStringRef(StackMapContents); |
| |
| if (Obj->isLittleEndian()) |
| prettyPrintStackMap( |
| W, StackMapParser<support::little>(StackMapContentsArray)); |
| else |
| prettyPrintStackMap( |
| W, StackMapParser<support::big>(StackMapContentsArray)); |
| } |
| |
| void MachODumper::printNeededLibraries() { |
| ListScope D(W, "NeededLibraries"); |
| |
| using LibsTy = std::vector<StringRef>; |
| LibsTy Libs; |
| |
| for (const auto &Command : Obj->load_commands()) { |
| if (Command.C.cmd == MachO::LC_LOAD_DYLIB || |
| Command.C.cmd == MachO::LC_ID_DYLIB || |
| Command.C.cmd == MachO::LC_LOAD_WEAK_DYLIB || |
| Command.C.cmd == MachO::LC_REEXPORT_DYLIB || |
| Command.C.cmd == MachO::LC_LAZY_LOAD_DYLIB || |
| Command.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) { |
| MachO::dylib_command Dl = Obj->getDylibIDLoadCommand(Command); |
| if (Dl.dylib.name < Dl.cmdsize) { |
| auto *P = static_cast<const char*>(Command.Ptr) + Dl.dylib.name; |
| Libs.push_back(P); |
| } |
| } |
| } |
| |
| llvm::stable_sort(Libs); |
| |
| for (const auto &L : Libs) { |
| W.startLine() << L << "\n"; |
| } |
| } |
| |
| void MachODumper::printMachODataInCode() { |
| for (const auto &Load : Obj->load_commands()) { |
| if (Load.C.cmd == MachO::LC_DATA_IN_CODE) { |
| MachO::linkedit_data_command LLC = Obj->getLinkeditDataLoadCommand(Load); |
| DictScope Group(W, "DataInCode"); |
| W.printNumber("Data offset", LLC.dataoff); |
| W.printNumber("Data size", LLC.datasize); |
| ListScope D(W, "Data entries"); |
| 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); |
| DictScope Group(W, "Entry"); |
| W.printNumber("Index", i); |
| W.printNumber("Offset", DICE.offset); |
| W.printNumber("Length", DICE.length); |
| W.printNumber("Kind", DICE.kind); |
| } |
| } |
| } |
| } |
| |
| void MachODumper::printMachOVersionMin() { |
| for (const auto &Load : Obj->load_commands()) { |
| StringRef Cmd; |
| switch (Load.C.cmd) { |
| case MachO::LC_VERSION_MIN_MACOSX: |
| Cmd = "LC_VERSION_MIN_MACOSX"; |
| break; |
| case MachO::LC_VERSION_MIN_IPHONEOS: |
| Cmd = "LC_VERSION_MIN_IPHONEOS"; |
| break; |
| case MachO::LC_VERSION_MIN_TVOS: |
| Cmd = "LC_VERSION_MIN_TVOS"; |
| break; |
| case MachO::LC_VERSION_MIN_WATCHOS: |
| Cmd = "LC_VERSION_MIN_WATCHOS"; |
| break; |
| case MachO::LC_BUILD_VERSION: |
| Cmd = "LC_BUILD_VERSION"; |
| break; |
| default: |
| continue; |
| } |
| |
| DictScope Group(W, "MinVersion"); |
| // Handle LC_BUILD_VERSION. |
| if (Load.C.cmd == MachO::LC_BUILD_VERSION) { |
| MachO::build_version_command BVC = Obj->getBuildVersionLoadCommand(Load); |
| W.printString("Cmd", Cmd); |
| W.printNumber("Size", BVC.cmdsize); |
| W.printString("Platform", |
| MachOObjectFile::getBuildPlatform(BVC.platform)); |
| W.printString("Version", MachOObjectFile::getVersionString(BVC.minos)); |
| if (BVC.sdk) |
| W.printString("SDK", MachOObjectFile::getVersionString(BVC.sdk)); |
| else |
| W.printString("SDK", StringRef("n/a")); |
| continue; |
| } |
| |
| MachO::version_min_command VMC = Obj->getVersionMinLoadCommand(Load); |
| W.printString("Cmd", Cmd); |
| W.printNumber("Size", VMC.cmdsize); |
| SmallString<32> Version; |
| Version = utostr(MachOObjectFile::getVersionMinMajor(VMC, false)) + "." + |
| utostr(MachOObjectFile::getVersionMinMinor(VMC, false)); |
| uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, false); |
| if (Update != 0) |
| Version += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, false)); |
| W.printString("Version", Version); |
| SmallString<32> SDK; |
| if (VMC.sdk == 0) |
| SDK = "n/a"; |
| else { |
| SDK = utostr(MachOObjectFile::getVersionMinMajor(VMC, true)) + "." + |
| utostr(MachOObjectFile::getVersionMinMinor(VMC, true)); |
| uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, true); |
| if (Update != 0) |
| SDK += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, true)); |
| } |
| W.printString("SDK", SDK); |
| } |
| } |
| |
| void MachODumper::printMachODysymtab() { |
| for (const auto &Load : Obj->load_commands()) { |
| if (Load.C.cmd == MachO::LC_DYSYMTAB) { |
| MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand(); |
| DictScope Group(W, "Dysymtab"); |
| W.printNumber("ilocalsym", DLC.ilocalsym); |
| W.printNumber("nlocalsym", DLC.nlocalsym); |
| W.printNumber("iextdefsym", DLC.iextdefsym); |
| W.printNumber("nextdefsym", DLC.nextdefsym); |
| W.printNumber("iundefsym", DLC.iundefsym); |
| W.printNumber("nundefsym", DLC.nundefsym); |
| W.printNumber("tocoff", DLC.tocoff); |
| W.printNumber("ntoc", DLC.ntoc); |
| W.printNumber("modtaboff", DLC.modtaboff); |
| W.printNumber("nmodtab", DLC.nmodtab); |
| W.printNumber("extrefsymoff", DLC.extrefsymoff); |
| W.printNumber("nextrefsyms", DLC.nextrefsyms); |
| W.printNumber("indirectsymoff", DLC.indirectsymoff); |
| W.printNumber("nindirectsyms", DLC.nindirectsyms); |
| W.printNumber("extreloff", DLC.extreloff); |
| W.printNumber("nextrel", DLC.nextrel); |
| W.printNumber("locreloff", DLC.locreloff); |
| W.printNumber("nlocrel", DLC.nlocrel); |
| } |
| } |
| } |
| |
| void MachODumper::printMachOSegment() { |
| for (const auto &Load : Obj->load_commands()) { |
| if (Load.C.cmd == MachO::LC_SEGMENT || Load.C.cmd == MachO::LC_SEGMENT_64) { |
| MachOSegment MOSegment; |
| getSegment(Obj, Load, MOSegment); |
| DictScope Group(W, "Segment"); |
| W.printString("Cmd", MOSegment.CmdName); |
| W.printString("Name", MOSegment.SegName); |
| W.printNumber("Size", MOSegment.cmdsize); |
| W.printHex("vmaddr", MOSegment.vmaddr); |
| W.printHex("vmsize", MOSegment.vmsize); |
| W.printNumber("fileoff", MOSegment.fileoff); |
| W.printNumber("filesize", MOSegment.filesize); |
| W.printString("maxprot", getMask(MOSegment.maxprot)); |
| W.printString("initprot", getMask(MOSegment.initprot)); |
| W.printNumber("nsects", MOSegment.nsects); |
| W.printHex("flags", MOSegment.flags); |
| } |
| } |
| } |
| |
| void MachODumper::printMachOIndirectSymbols() { |
| for (const auto &Load : Obj->load_commands()) { |
| if (Load.C.cmd == MachO::LC_DYSYMTAB) { |
| MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand(); |
| DictScope Group(W, "Indirect Symbols"); |
| W.printNumber("Number", DLC.nindirectsyms); |
| ListScope D(W, "Symbols"); |
| for (unsigned i = 0; i < DLC.nindirectsyms; ++i) { |
| DictScope Group(W, "Entry"); |
| W.printNumber("Entry Index", i); |
| W.printHex("Symbol Index", Obj->getIndirectSymbolTableEntry(DLC, i)); |
| } |
| } |
| } |
| } |
| |
| void MachODumper::printMachOLinkerOptions() { |
| for (const auto &Load : Obj->load_commands()) { |
| if (Load.C.cmd == MachO::LC_LINKER_OPTION) { |
| MachO::linker_option_command LOLC = Obj->getLinkerOptionLoadCommand(Load); |
| DictScope Group(W, "Linker Options"); |
| W.printNumber("Size", LOLC.cmdsize); |
| ListScope D(W, "Strings"); |
| uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_option_command); |
| const char *P = Load.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'); |
| W.printString("Value", Split.first); |
| Data = Split.second; |
| } |
| } |
| } |
| } |
