diff options
Diffstat (limited to 'contrib/llvm/tools/llvm-readobj/MachODumper.cpp')
| -rw-r--r-- | contrib/llvm/tools/llvm-readobj/MachODumper.cpp | 821 |
1 files changed, 821 insertions, 0 deletions
diff --git a/contrib/llvm/tools/llvm-readobj/MachODumper.cpp b/contrib/llvm/tools/llvm-readobj/MachODumper.cpp new file mode 100644 index 0000000..58d2c9f --- /dev/null +++ b/contrib/llvm/tools/llvm-readobj/MachODumper.cpp @@ -0,0 +1,821 @@ +//===-- MachODump.cpp - Object file dumping utility for llvm --------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements the MachO-specific dumper for llvm-readobj. +// +//===----------------------------------------------------------------------===// + +#include "llvm-readobj.h" +#include "Error.h" +#include "ObjDumper.h" +#include "StackMapPrinter.h" +#include "StreamWriter.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/Object/MachO.h" +#include "llvm/Support/Casting.h" + +using namespace llvm; +using namespace object; + +namespace { + +class MachODumper : public ObjDumper { +public: + MachODumper(const MachOObjectFile *Obj, StreamWriter& Writer) + : ObjDumper(Writer) + , Obj(Obj) { } + + void printFileHeaders() override; + void printSections() override; + void printRelocations() override; + void printSymbols() override; + void printDynamicSymbols() override; + void printUnwindInfo() override; + void printStackMap() const 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 printSymbol(const SymbolRef &Symbol); + + void printRelocation(const RelocationRef &Reloc); + + void printRelocation(const MachOObjectFile *Obj, const RelocationRef &Reloc); + + void printSections(const MachOObjectFile *Obj); + + const MachOObjectFile *Obj; +}; + +} // namespace + + +namespace llvm { + +std::error_code createMachODumper(const object::ObjectFile *Obj, + StreamWriter &Writer, + std::unique_ptr<ObjDumper> &Result) { + const MachOObjectFile *MachOObj = dyn_cast<MachOObjectFile>(Obj); + if (!MachOObj) + return readobj_error::unsupported_obj_file_format; + + Result.reset(new MachODumper(MachOObj, Writer)); + return readobj_error::success; +} + +} // 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), +}; + +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> 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 } +}; + +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::printSections() { + return printSections(Obj); +} + +void MachODumper::printSections(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; + error(Section.getName(Name)); + + 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(MachOSectionAttributes)); + 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) { + bool IsBSS = Section.isBSS(); + if (!IsBSS) { + StringRef Data; + error(Section.getContents(Data)); + + W.printBinaryBlock("SectionData", Data); + } + } + } +} + +void MachODumper::printRelocations() { + ListScope D(W, "Relocations"); + + std::error_code EC; + for (const SectionRef &Section : Obj->sections()) { + StringRef Name; + error(Section.getName(Name)); + + 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()) { + ErrorOr<StringRef> TargetNameOrErr = Symbol->getName(); + error(TargetNameOrErr.getError()); + TargetName = *TargetNameOrErr; + } + } else if (!IsScattered) { + section_iterator SecI = Obj->getRelocationSection(DR); + if (SecI != Obj->section_end()) { + error(SecI->getName(TargetName)); + } + } + 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; + if (ErrorOr<StringRef> SymbolNameOrErr = Symbol.getName()) + SymbolName = *SymbolNameOrErr; + + MachOSymbol MOSymbol; + getSymbol(Obj, Symbol.getRawDataRefImpl(), MOSymbol); + + StringRef SectionName = ""; + ErrorOr<section_iterator> SecIOrErr = Symbol.getSection(); + error(SecIOrErr.getError()); + section_iterator SecI = *SecIOrErr; + if (SecI != Obj->section_end()) + error(SecI->getName(SectionName)); + + 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; + Sec.getName(Name); + if (Name == "__llvm_stackmaps") { + StackMapSection = Sec; + break; + } + } + + if (StackMapSection == object::SectionRef()) + return; + + StringRef StackMapContents; + StackMapSection.getContents(StackMapContents); + ArrayRef<uint8_t> StackMapContentsArray( + reinterpret_cast<const uint8_t*>(StackMapContents.data()), + StackMapContents.size()); + + if (Obj->isLittleEndian()) + prettyPrintStackMap( + llvm::outs(), + StackMapV1Parser<support::little>(StackMapContentsArray)); + else + prettyPrintStackMap(llvm::outs(), + StackMapV1Parser<support::big>(StackMapContentsArray)); +} + +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; + default: + continue; + } + + MachO::version_min_command VMC = Obj->getVersionMinLoadCommand(Load); + DictScope Group(W, "MinVersion"); + 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; + } + } + } +} |
