tools/llvm-readobj/MachODumper.cpp

   1 //===-- MachODump.cpp - Object file dumping utility for llvm --------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file implements the MachO-specific dumper for llvm-readobj.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "Error.h"
  15 #include "ObjDumper.h"
  16 #include "StackMapPrinter.h"
  17 #include "llvm-readobj.h"
  18 #include "llvm/ADT/SmallString.h"
  19 #include "llvm/ADT/StringExtras.h"
  20 #include "llvm/Object/MachO.h"
  21 #include "llvm/Support/Casting.h"
  22 #include "llvm/Support/ScopedPrinter.h"
  23
  24 using namespace llvm;
  25 using namespace object;
  26
  27 namespace {
  28
  29 class MachODumper : public ObjDumper {
  30 public:
  31   MachODumper(const MachOObjectFile *Obj, ScopedPrinter &Writer)
  32       : ObjDumper(Writer), Obj(Obj) {}
  33
  34   void printFileHeaders() override;
  35   void printSections() override;
  36   void printRelocations() override;
  37   void printSymbols() override;
  38   void printDynamicSymbols() override;
  39   void printUnwindInfo() override;
  40   void printStackMap() const override;
  41
  42   void printNeededLibraries() override;
  43
  44   // MachO-specific.
  45   void printMachODataInCode() override;
  46   void printMachOVersionMin() override;
  47   void printMachODysymtab() override;
  48   void printMachOSegment() override;
  49   void printMachOIndirectSymbols() override;
  50   void printMachOLinkerOptions () override;
  51
  52 private:
  53   template<class MachHeader>
  54   void printFileHeaders(const MachHeader &Header);
  55
  56   void printSymbol(const SymbolRef &Symbol);
  57
  58   void printRelocation(const RelocationRef &Reloc);
  59
  60   void printRelocation(const MachOObjectFile *Obj, const RelocationRef &Reloc);
  61
  62   void printSections(const MachOObjectFile *Obj);
  63
  64   const MachOObjectFile *Obj;
  65 };
  66
  67 } // namespace
  68
  69
  70 namespace llvm {
  71
  72 std::error_code createMachODumper(const object::ObjectFile *Obj,
  73                                   ScopedPrinter &Writer,
  74                                   std::unique_ptr<ObjDumper> &Result) {
  75   const MachOObjectFile *MachOObj = dyn_cast<MachOObjectFile>(Obj);
  76   if (!MachOObj)
  77     return readobj_error::unsupported_obj_file_format;
  78
  79   Result.reset(new MachODumper(MachOObj, Writer));
  80   return readobj_error::success;
  81 }
  82
  83 } // namespace llvm
  84
  85 static const EnumEntry<uint32_t> MachOMagics[] = {
  86   { "Magic",      MachO::MH_MAGIC    },
  87   { "Cigam",      MachO::MH_CIGAM    },
  88   { "Magic64",    MachO::MH_MAGIC_64 },
  89   { "Cigam64",    MachO::MH_CIGAM_64 },
  90   { "FatMagic",   MachO::FAT_MAGIC   },
  91   { "FatCigam",   MachO::FAT_CIGAM   },
  92 };
  93
  94 static const EnumEntry<uint32_t> MachOHeaderFileTypes[] = {
  95   { "Relocatable",          MachO::MH_OBJECT      },
  96   { "Executable",           MachO::MH_EXECUTE     },
  97   { "FixedVMLibrary",       MachO::MH_FVMLIB      },
  98   { "Core",                 MachO::MH_CORE        },
  99   { "PreloadedExecutable",  MachO::MH_PRELOAD     },
 100   { "DynamicLibrary",       MachO::MH_DYLIB       },
 101   { "DynamicLinker",        MachO::MH_DYLINKER    },
 102   { "Bundle",               MachO::MH_BUNDLE      },
 103   { "DynamicLibraryStub",   MachO::MH_DYLIB_STUB  },
 104   { "DWARFSymbol",          MachO::MH_DSYM        },
 105   { "KextBundle",           MachO::MH_KEXT_BUNDLE },
 106 };
 107
 108 static const EnumEntry<uint32_t> MachOHeaderCpuTypes[] = {
 109   { "Any"       , static_cast<uint32_t>(MachO::CPU_TYPE_ANY) },
 110   { "X86"       , MachO::CPU_TYPE_X86       },
 111   { "X86-64"    , MachO::CPU_TYPE_X86_64    },
 112   { "Mc98000"   , MachO::CPU_TYPE_MC98000   },
 113   { "Arm"       , MachO::CPU_TYPE_ARM       },
 114   { "Arm64"     , MachO::CPU_TYPE_ARM64     },
 115   { "Sparc"     , MachO::CPU_TYPE_SPARC     },
 116   { "PowerPC"   , MachO::CPU_TYPE_POWERPC   },
 117   { "PowerPC64" , MachO::CPU_TYPE_POWERPC64 },
 118 };
 119
 120 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX86[] = {
 121   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_I386_ALL),
 122   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_386),
 123   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486),
 124   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486SX),
 125   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_586),
 126   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTPRO),
 127   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M3),
 128   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M5),
 129   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON),
 130   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON_MOBILE),
 131   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3),
 132   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_M),
 133   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_XEON),
 134   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_M),
 135   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4),
 136   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4_M),
 137   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM),
 138   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM_2),
 139   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON),
 140   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON_MP),
 141 };
 142
 143 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX64[] = {
 144   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_ALL),
 145   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_ARCH1),
 146   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_H),
 147 };
 148
 149 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM[] = {
 150   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_ALL),
 151   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V4T),
 152   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6),
 153   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5),
 154   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5TEJ),
 155   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_XSCALE),
 156   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7),
 157   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7S),
 158   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7K),
 159   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6M),
 160   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7M),
 161   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7EM),
 162 };
 163
 164 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM64[] = {
 165   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_ALL),
 166 };
 167
 168 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesSPARC[] = {
 169   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_SPARC_ALL),
 170 };
 171
 172 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesPPC[] = {
 173   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_ALL),
 174   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_601),
 175   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_602),
 176   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603),
 177   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603e),
 178   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603ev),
 179   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604),
 180   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604e),
 181   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_620),
 182   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_750),
 183   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7400),
 184   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7450),
 185   LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_970),
 186 };
 187
 188 static const EnumEntry<uint32_t> MachOHeaderFlags[] = {
 189   LLVM_READOBJ_ENUM_ENT(MachO, MH_NOUNDEFS),
 190   LLVM_READOBJ_ENUM_ENT(MachO, MH_INCRLINK),
 191   LLVM_READOBJ_ENUM_ENT(MachO, MH_DYLDLINK),
 192   LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDATLOAD),
 193   LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBOUND),
 194   LLVM_READOBJ_ENUM_ENT(MachO, MH_SPLIT_SEGS),
 195   LLVM_READOBJ_ENUM_ENT(MachO, MH_LAZY_INIT),
 196   LLVM_READOBJ_ENUM_ENT(MachO, MH_TWOLEVEL),
 197   LLVM_READOBJ_ENUM_ENT(MachO, MH_FORCE_FLAT),
 198   LLVM_READOBJ_ENUM_ENT(MachO, MH_NOMULTIDEFS),
 199   LLVM_READOBJ_ENUM_ENT(MachO, MH_NOFIXPREBINDING),
 200   LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBINDABLE),
 201   LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLMODSBOUND),
 202   LLVM_READOBJ_ENUM_ENT(MachO, MH_SUBSECTIONS_VIA_SYMBOLS),
 203   LLVM_READOBJ_ENUM_ENT(MachO, MH_CANONICAL),
 204   LLVM_READOBJ_ENUM_ENT(MachO, MH_WEAK_DEFINES),
 205   LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDS_TO_WEAK),
 206   LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLOW_STACK_EXECUTION),
 207   LLVM_READOBJ_ENUM_ENT(MachO, MH_ROOT_SAFE),
 208   LLVM_READOBJ_ENUM_ENT(MachO, MH_SETUID_SAFE),
 209   LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_REEXPORTED_DYLIBS),
 210   LLVM_READOBJ_ENUM_ENT(MachO, MH_PIE),
 211   LLVM_READOBJ_ENUM_ENT(MachO, MH_DEAD_STRIPPABLE_DYLIB),
 212   LLVM_READOBJ_ENUM_ENT(MachO, MH_HAS_TLV_DESCRIPTORS),
 213   LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_HEAP_EXECUTION),
 214   LLVM_READOBJ_ENUM_ENT(MachO, MH_APP_EXTENSION_SAFE),
 215 };
 216
 217 static const EnumEntry<unsigned> MachOSectionAttributes[] = {
 218   { "LocReloc"         , 1 <<  0 /*S_ATTR_LOC_RELOC          */ },
 219   { "ExtReloc"         , 1 <<  1 /*S_ATTR_EXT_RELOC          */ },
 220   { "SomeInstructions" , 1 <<  2 /*S_ATTR_SOME_INSTRUCTIONS  */ },
 221   { "Debug"            , 1 << 17 /*S_ATTR_DEBUG              */ },
 222   { "SelfModifyingCode", 1 << 18 /*S_ATTR_SELF_MODIFYING_CODE*/ },
 223   { "LiveSupport"      , 1 << 19 /*S_ATTR_LIVE_SUPPORT       */ },
 224   { "NoDeadStrip"      , 1 << 20 /*S_ATTR_NO_DEAD_STRIP      */ },
 225   { "StripStaticSyms"  , 1 << 21 /*S_ATTR_STRIP_STATIC_SYMS  */ },
 226   { "NoTOC"            , 1 << 22 /*S_ATTR_NO_TOC             */ },
 227   { "PureInstructions" , 1 << 23 /*S_ATTR_PURE_INSTRUCTIONS  */ },
 228 };
 229
 230 static const EnumEntry<unsigned> MachOSymbolRefTypes[] = {
 231   { "UndefinedNonLazy",                     0 },
 232   { "ReferenceFlagUndefinedLazy",           1 },
 233   { "ReferenceFlagDefined",                 2 },
 234   { "ReferenceFlagPrivateDefined",          3 },
 235   { "ReferenceFlagPrivateUndefinedNonLazy", 4 },
 236   { "ReferenceFlagPrivateUndefinedLazy",    5 }
 237 };
 238
 239 static const EnumEntry<unsigned> MachOSymbolFlags[] = {
 240   { "ReferencedDynamically", 0x10 },
 241   { "NoDeadStrip",           0x20 },
 242   { "WeakRef",               0x40 },
 243   { "WeakDef",               0x80 },
 244   { "AltEntry",             0x200 },
 245 };
 246
 247 static const EnumEntry<unsigned> MachOSymbolTypes[] = {
 248   { "Undef",           0x0 },
 249   { "Abs",             0x2 },
 250   { "Indirect",        0xA },
 251   { "PreboundUndef",   0xC },
 252   { "Section",         0xE }
 253 };
 254
 255 namespace {
 256   struct MachOSection {
 257     ArrayRef<char> Name;
 258     ArrayRef<char> SegmentName;
 259     uint64_t Address;
 260     uint64_t Size;
 261     uint32_t Offset;
 262     uint32_t Alignment;
 263     uint32_t RelocationTableOffset;
 264     uint32_t NumRelocationTableEntries;
 265     uint32_t Flags;
 266     uint32_t Reserved1;
 267     uint32_t Reserved2;
 268     uint32_t Reserved3;
 269   };
 270
 271   struct MachOSegment {
 272     std::string CmdName;
 273     std::string SegName;
 274     uint64_t cmdsize;
 275     uint64_t vmaddr;
 276     uint64_t vmsize;
 277     uint64_t fileoff;
 278     uint64_t filesize;
 279     uint32_t maxprot;
 280     uint32_t initprot;
 281     uint32_t nsects;
 282     uint32_t flags;
 283   };
 284
 285   struct MachOSymbol {
 286     uint32_t StringIndex;
 287     uint8_t Type;
 288     uint8_t SectionIndex;
 289     uint16_t Flags;
 290     uint64_t Value;
 291   };
 292 }
 293
 294 static std::string getMask(uint32_t prot)
 295 {
 296   // TODO (davide): This always assumes prot is valid.
 297   // Catch mistakes and report if needed.
 298   std::string Prot;
 299   Prot = "";
 300   Prot += (prot & MachO::VM_PROT_READ) ? "r" : "-";
 301   Prot += (prot & MachO::VM_PROT_WRITE) ? "w" : "-";
 302   Prot += (prot & MachO::VM_PROT_EXECUTE) ? "x" : "-";
 303   return Prot;
 304 }
 305
 306 static void getSection(const MachOObjectFile *Obj,
 307                        DataRefImpl Sec,
 308                        MachOSection &Section) {
 309   if (!Obj->is64Bit()) {
 310     MachO::section Sect = Obj->getSection(Sec);
 311     Section.Address     = Sect.addr;
 312     Section.Size        = Sect.size;
 313     Section.Offset      = Sect.offset;
 314     Section.Alignment   = Sect.align;
 315     Section.RelocationTableOffset = Sect.reloff;
 316     Section.NumRelocationTableEntries = Sect.nreloc;
 317     Section.Flags       = Sect.flags;
 318     Section.Reserved1   = Sect.reserved1;
 319     Section.Reserved2   = Sect.reserved2;
 320     return;
 321   }
 322   MachO::section_64 Sect = Obj->getSection64(Sec);
 323   Section.Address     = Sect.addr;
 324   Section.Size        = Sect.size;
 325   Section.Offset      = Sect.offset;
 326   Section.Alignment   = Sect.align;
 327   Section.RelocationTableOffset = Sect.reloff;
 328   Section.NumRelocationTableEntries = Sect.nreloc;
 329   Section.Flags       = Sect.flags;
 330   Section.Reserved1   = Sect.reserved1;
 331   Section.Reserved2   = Sect.reserved2;
 332   Section.Reserved3   = Sect.reserved3;
 333 }
 334
 335 static void getSegment(const MachOObjectFile *Obj,
 336                        const MachOObjectFile::LoadCommandInfo &L,
 337                        MachOSegment &Segment) {
 338   if (!Obj->is64Bit()) {
 339     MachO::segment_command SC = Obj->getSegmentLoadCommand(L);
 340     Segment.CmdName = "LC_SEGMENT";
 341     Segment.SegName = SC.segname;
 342     Segment.cmdsize = SC.cmdsize;
 343     Segment.vmaddr = SC.vmaddr;
 344     Segment.vmsize = SC.vmsize;
 345     Segment.fileoff = SC.fileoff;
 346     Segment.filesize = SC.filesize;
 347     Segment.maxprot = SC.maxprot;
 348     Segment.initprot = SC.initprot;
 349     Segment.nsects = SC.nsects;
 350     Segment.flags = SC.flags;
 351     return;
 352   }
 353   MachO::segment_command_64 SC = Obj->getSegment64LoadCommand(L);
 354   Segment.CmdName = "LC_SEGMENT_64";
 355   Segment.SegName = SC.segname;
 356   Segment.cmdsize = SC.cmdsize;
 357   Segment.vmaddr = SC.vmaddr;
 358   Segment.vmsize = SC.vmsize;
 359   Segment.fileoff = SC.fileoff;
 360   Segment.filesize = SC.filesize;
 361   Segment.maxprot = SC.maxprot;
 362   Segment.initprot = SC.initprot;
 363   Segment.nsects = SC.nsects;
 364   Segment.flags = SC.flags;
 365 }
 366
 367 static void getSymbol(const MachOObjectFile *Obj,
 368                       DataRefImpl DRI,
 369                       MachOSymbol &Symbol) {
 370   if (!Obj->is64Bit()) {
 371     MachO::nlist Entry = Obj->getSymbolTableEntry(DRI);
 372     Symbol.StringIndex  = Entry.n_strx;
 373     Symbol.Type         = Entry.n_type;
 374     Symbol.SectionIndex = Entry.n_sect;
 375     Symbol.Flags        = Entry.n_desc;
 376     Symbol.Value        = Entry.n_value;
 377     return;
 378   }
 379   MachO::nlist_64 Entry = Obj->getSymbol64TableEntry(DRI);
 380   Symbol.StringIndex  = Entry.n_strx;
 381   Symbol.Type         = Entry.n_type;
 382   Symbol.SectionIndex = Entry.n_sect;
 383   Symbol.Flags        = Entry.n_desc;
 384   Symbol.Value        = Entry.n_value;
 385 }
 386
 387 void MachODumper::printFileHeaders() {
 388   DictScope H(W, "MachHeader");
 389   if (!Obj->is64Bit()) {
 390     printFileHeaders(Obj->getHeader());
 391   } else {
 392     printFileHeaders(Obj->getHeader64());
 393     W.printHex("Reserved", Obj->getHeader64().reserved);
 394   }
 395 }
 396
 397 template<class MachHeader>
 398 void MachODumper::printFileHeaders(const MachHeader &Header) {
 399   W.printEnum("Magic", Header.magic, makeArrayRef(MachOMagics));
 400   W.printEnum("CpuType", Header.cputype, makeArrayRef(MachOHeaderCpuTypes));
 401   uint32_t subtype = Header.cpusubtype & ~MachO::CPU_SUBTYPE_MASK;
 402   switch (Header.cputype) {
 403   case MachO::CPU_TYPE_X86:
 404     W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX86));
 405     break;
 406   case MachO::CPU_TYPE_X86_64:
 407     W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX64));
 408     break;
 409   case MachO::CPU_TYPE_ARM:
 410     W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM));
 411     break;
 412   case MachO::CPU_TYPE_POWERPC:
 413     W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesPPC));
 414     break;
 415   case MachO::CPU_TYPE_SPARC:
 416     W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesSPARC));
 417     break;
 418   case MachO::CPU_TYPE_ARM64:
 419     W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM64));
 420     break;
 421   case MachO::CPU_TYPE_POWERPC64:
 422   default:
 423     W.printHex("CpuSubtype", subtype);
 424   }
 425   W.printEnum("FileType", Header.filetype, makeArrayRef(MachOHeaderFileTypes));
 426   W.printNumber("NumOfLoadCommands", Header.ncmds);
 427   W.printNumber("SizeOfLoadCommands", Header.sizeofcmds);
 428   W.printFlags("Flags", Header.flags, makeArrayRef(MachOHeaderFlags));
 429 }
 430
 431 void MachODumper::printSections() {
 432   return printSections(Obj);
 433 }
 434
 435 void MachODumper::printSections(const MachOObjectFile *Obj) {
 436   ListScope Group(W, "Sections");
 437
 438   int SectionIndex = -1;
 439   for (const SectionRef &Section : Obj->sections()) {
 440     ++SectionIndex;
 441
 442     MachOSection MOSection;
 443     getSection(Obj, Section.getRawDataRefImpl(), MOSection);
 444     DataRefImpl DR = Section.getRawDataRefImpl();
 445
 446     StringRef Name;
 447     error(Section.getName(Name));
 448
 449     ArrayRef<char> RawName = Obj->getSectionRawName(DR);
 450     StringRef SegmentName = Obj->getSectionFinalSegmentName(DR);
 451     ArrayRef<char> RawSegmentName = Obj->getSectionRawFinalSegmentName(DR);
 452
 453     DictScope SectionD(W, "Section");
 454     W.printNumber("Index", SectionIndex);
 455     W.printBinary("Name", Name, RawName);
 456     W.printBinary("Segment", SegmentName, RawSegmentName);
 457     W.printHex("Address", MOSection.Address);
 458     W.printHex("Size", MOSection.Size);
 459     W.printNumber("Offset", MOSection.Offset);
 460     W.printNumber("Alignment", MOSection.Alignment);
 461     W.printHex("RelocationOffset", MOSection.RelocationTableOffset);
 462     W.printNumber("RelocationCount", MOSection.NumRelocationTableEntries);
 463     W.printEnum("Type", MOSection.Flags & 0xFF,
 464                 makeArrayRef(MachOSectionAttributes));
 465     W.printFlags("Attributes", MOSection.Flags >> 8,
 466                  makeArrayRef(MachOSectionAttributes));
 467     W.printHex("Reserved1", MOSection.Reserved1);
 468     W.printHex("Reserved2", MOSection.Reserved2);
 469     if (Obj->is64Bit())
 470       W.printHex("Reserved3", MOSection.Reserved3);
 471
 472     if (opts::SectionRelocations) {
 473       ListScope D(W, "Relocations");
 474       for (const RelocationRef &Reloc : Section.relocations())
 475         printRelocation(Reloc);
 476     }
 477
 478     if (opts::SectionSymbols) {
 479       ListScope D(W, "Symbols");
 480       for (const SymbolRef &Symbol : Obj->symbols()) {
 481         if (!Section.containsSymbol(Symbol))
 482           continue;
 483
 484         printSymbol(Symbol);
 485       }
 486     }
 487
 488     if (opts::SectionData) {
 489       bool IsBSS = Section.isBSS();
 490       if (!IsBSS) {
 491         StringRef Data;
 492         error(Section.getContents(Data));
 493
 494         W.printBinaryBlock("SectionData", Data);
 495       }
 496     }
 497   }
 498 }
 499
 500 void MachODumper::printRelocations() {
 501   ListScope D(W, "Relocations");
 502
 503   std::error_code EC;
 504   for (const SectionRef &Section : Obj->sections()) {
 505     StringRef Name;
 506     error(Section.getName(Name));
 507
 508     bool PrintedGroup = false;
 509     for (const RelocationRef &Reloc : Section.relocations()) {
 510       if (!PrintedGroup) {
 511         W.startLine() << "Section " << Name << " {\n";
 512         W.indent();
 513         PrintedGroup = true;
 514       }
 515
 516       printRelocation(Reloc);
 517     }
 518
 519     if (PrintedGroup) {
 520       W.unindent();
 521       W.startLine() << "}\n";
 522     }
 523   }
 524 }
 525
 526 void MachODumper::printRelocation(const RelocationRef &Reloc) {
 527   return printRelocation(Obj, Reloc);
 528 }
 529
 530 void MachODumper::printRelocation(const MachOObjectFile *Obj,
 531                                   const RelocationRef &Reloc) {
 532   uint64_t Offset = Reloc.getOffset();
 533   SmallString<32> RelocName;
 534   Reloc.getTypeName(RelocName);
 535
 536   DataRefImpl DR = Reloc.getRawDataRefImpl();
 537   MachO::any_relocation_info RE = Obj->getRelocation(DR);
 538   bool IsScattered = Obj->isRelocationScattered(RE);
 539   bool IsExtern = !IsScattered && Obj->getPlainRelocationExternal(RE);
 540
 541   StringRef TargetName;
 542   if (IsExtern) {
 543     symbol_iterator Symbol = Reloc.getSymbol();
 544     if (Symbol != Obj->symbol_end()) {
 545       Expected<StringRef> TargetNameOrErr = Symbol->getName();
 546       if (!TargetNameOrErr)
 547         error(errorToErrorCode(TargetNameOrErr.takeError()));
 548       TargetName = *TargetNameOrErr;
 549     }
 550   } else if (!IsScattered) {
 551     section_iterator SecI = Obj->getRelocationSection(DR);
 552     if (SecI != Obj->section_end()) {
 553       error(SecI->getName(TargetName));
 554     }
 555   }
 556   if (TargetName.empty())
 557     TargetName = "-";
 558
 559   if (opts::ExpandRelocs) {
 560     DictScope Group(W, "Relocation");
 561     W.printHex("Offset", Offset);
 562     W.printNumber("PCRel", Obj->getAnyRelocationPCRel(RE));
 563     W.printNumber("Length", Obj->getAnyRelocationLength(RE));
 564     W.printNumber("Type", RelocName, Obj->getAnyRelocationType(RE));
 565     if (IsScattered) {
 566       W.printHex("Value", Obj->getScatteredRelocationValue(RE));
 567     } else {
 568       const char *Kind = IsExtern ? "Symbol" : "Section";
 569       W.printNumber(Kind, TargetName, Obj->getPlainRelocationSymbolNum(RE));
 570     }
 571   } else {
 572     SmallString<32> SymbolNameOrOffset("0x");
 573     if (IsScattered) {
 574       // Scattered relocations don't really have an associated symbol for some
 575       // reason, even if one exists in the symtab at the correct address.
 576       SymbolNameOrOffset += utohexstr(Obj->getScatteredRelocationValue(RE));
 577     } else {
 578       SymbolNameOrOffset = TargetName;
 579     }
 580
 581     raw_ostream& OS = W.startLine();
 582     OS << W.hex(Offset)
 583        << " " << Obj->getAnyRelocationPCRel(RE)
 584        << " " << Obj->getAnyRelocationLength(RE);
 585     if (IsScattered)
 586       OS << " n/a";
 587     else
 588       OS << " " << Obj->getPlainRelocationExternal(RE);
 589     OS << " " << RelocName
 590        << " " << IsScattered
 591        << " " << SymbolNameOrOffset
 592        << "\n";
 593   }
 594 }
 595
 596 void MachODumper::printSymbols() {
 597   ListScope Group(W, "Symbols");
 598
 599   for (const SymbolRef &Symbol : Obj->symbols()) {
 600     printSymbol(Symbol);
 601   }
 602 }
 603
 604 void MachODumper::printDynamicSymbols() {
 605   ListScope Group(W, "DynamicSymbols");
 606 }
 607
 608 void MachODumper::printSymbol(const SymbolRef &Symbol) {
 609   StringRef SymbolName;
 610   Expected<StringRef> SymbolNameOrErr = Symbol.getName();
 611   if (!SymbolNameOrErr) {
 612     // TODO: Actually report errors helpfully.
 613     consumeError(SymbolNameOrErr.takeError());
 614   } else
 615     SymbolName = *SymbolNameOrErr;
 616
 617   MachOSymbol MOSymbol;
 618   getSymbol(Obj, Symbol.getRawDataRefImpl(), MOSymbol);
 619
 620   StringRef SectionName = "";
 621   Expected<section_iterator> SecIOrErr = Symbol.getSection();
 622   error(errorToErrorCode(SecIOrErr.takeError()));
 623   section_iterator SecI = *SecIOrErr;
 624   if (SecI != Obj->section_end())
 625     error(SecI->getName(SectionName));
 626
 627   DictScope D(W, "Symbol");
 628   W.printNumber("Name", SymbolName, MOSymbol.StringIndex);
 629   if (MOSymbol.Type & MachO::N_STAB) {
 630     W.printHex("Type", "SymDebugTable", MOSymbol.Type);
 631   } else {
 632     if (MOSymbol.Type & MachO::N_PEXT)
 633       W.startLine() << "PrivateExtern\n";
 634     if (MOSymbol.Type & MachO::N_EXT)
 635       W.startLine() << "Extern\n";
 636     W.printEnum("Type", uint8_t(MOSymbol.Type & MachO::N_TYPE),
 637                 makeArrayRef(MachOSymbolTypes));
 638   }
 639   W.printHex("Section", SectionName, MOSymbol.SectionIndex);
 640   W.printEnum("RefType", static_cast<uint16_t>(MOSymbol.Flags & 0xF),
 641               makeArrayRef(MachOSymbolRefTypes));
 642   W.printFlags("Flags", static_cast<uint16_t>(MOSymbol.Flags & ~0xF),
 643                makeArrayRef(MachOSymbolFlags));
 644   W.printHex("Value", MOSymbol.Value);
 645 }
 646
 647 void MachODumper::printUnwindInfo() {
 648   W.startLine() << "UnwindInfo not implemented.\n";
 649 }
 650
 651 void MachODumper::printStackMap() const {
 652   object::SectionRef StackMapSection;
 653   for (auto Sec : Obj->sections()) {
 654     StringRef Name;
 655     Sec.getName(Name);
 656     if (Name == "__llvm_stackmaps") {
 657       StackMapSection = Sec;
 658       break;
 659     }
 660   }
 661
 662   if (StackMapSection == object::SectionRef())
 663     return;
 664
 665   StringRef StackMapContents;
 666   StackMapSection.getContents(StackMapContents);
 667   ArrayRef<uint8_t> StackMapContentsArray(
 668       reinterpret_cast<const uint8_t*>(StackMapContents.data()),
 669       StackMapContents.size());
 670
 671   if (Obj->isLittleEndian())
 672     prettyPrintStackMap(
 673         W, StackMapV2Parser<support::little>(StackMapContentsArray));
 674   else
 675     prettyPrintStackMap(W,
 676                         StackMapV2Parser<support::big>(StackMapContentsArray));
 677 }
 678
 679 void MachODumper::printNeededLibraries() {
 680   ListScope D(W, "NeededLibraries");
 681
 682   using LibsTy = std::vector<StringRef>;
 683   LibsTy Libs;
 684
 685   for (const auto &Command : Obj->load_commands()) {
 686     if (Command.C.cmd == MachO::LC_LOAD_DYLIB ||
 687         Command.C.cmd == MachO::LC_ID_DYLIB ||
 688         Command.C.cmd == MachO::LC_LOAD_WEAK_DYLIB ||
 689         Command.C.cmd == MachO::LC_REEXPORT_DYLIB ||
 690         Command.C.cmd == MachO::LC_LAZY_LOAD_DYLIB ||
 691         Command.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) {
 692       MachO::dylib_command Dl = Obj->getDylibIDLoadCommand(Command);
 693       if (Dl.dylib.name < Dl.cmdsize) {
 694         auto *P = static_cast<const char*>(Command.Ptr) + Dl.dylib.name;
 695         Libs.push_back(P);
 696       }
 697     }
 698   }
 699
 700   std::stable_sort(Libs.begin(), Libs.end());
 701
 702   for (const auto &L : Libs) {
 703     outs() << "  " << L << "\n";
 704   }
 705 }
 706
 707 void MachODumper::printMachODataInCode() {
 708   for (const auto &Load : Obj->load_commands()) {
 709     if (Load.C.cmd  == MachO::LC_DATA_IN_CODE) {
 710       MachO::linkedit_data_command LLC = Obj->getLinkeditDataLoadCommand(Load);
 711       DictScope Group(W, "DataInCode");
 712       W.printNumber("Data offset", LLC.dataoff);
 713       W.printNumber("Data size", LLC.datasize);
 714       ListScope D(W, "Data entries");
 715       unsigned NumRegions = LLC.datasize / sizeof(MachO::data_in_code_entry);
 716       for (unsigned i = 0; i < NumRegions; ++i) {
 717         MachO::data_in_code_entry DICE = Obj->getDataInCodeTableEntry(
 718                                                               LLC.dataoff, i);
 719         DictScope Group(W, "Entry");
 720         W.printNumber("Index", i);
 721         W.printNumber("Offset", DICE.offset);
 722         W.printNumber("Length", DICE.length);
 723         W.printNumber("Kind", DICE.kind);
 724       }
 725     }
 726   }
 727 }
 728
 729 void MachODumper::printMachOVersionMin() {
 730   for (const auto &Load : Obj->load_commands()) {
 731     StringRef Cmd;
 732     switch (Load.C.cmd) {
 733     case MachO::LC_VERSION_MIN_MACOSX:
 734       Cmd = "LC_VERSION_MIN_MACOSX";
 735       break;
 736     case MachO::LC_VERSION_MIN_IPHONEOS:
 737       Cmd = "LC_VERSION_MIN_IPHONEOS";
 738       break;
 739     case MachO::LC_VERSION_MIN_TVOS:
 740       Cmd = "LC_VERSION_MIN_TVOS";
 741       break;
 742     case MachO::LC_VERSION_MIN_WATCHOS:
 743       Cmd = "LC_VERSION_MIN_WATCHOS";
 744       break;
 745     case MachO::LC_BUILD_VERSION:
 746       Cmd = "LC_BUILD_VERSION";
 747       break;
 748     default:
 749       continue;
 750     }
 751
 752     DictScope Group(W, "MinVersion");
 753     // Handle LC_BUILD_VERSION.
 754     if (Load.C.cmd == MachO::LC_BUILD_VERSION) {
 755       MachO::build_version_command BVC = Obj->getBuildVersionLoadCommand(Load);
 756       W.printString("Cmd", Cmd);
 757       W.printNumber("Size", BVC.cmdsize);
 758       W.printString("Platform",
 759                     MachOObjectFile::getBuildPlatform(BVC.platform));
 760       W.printString("Version", MachOObjectFile::getVersionString(BVC.minos));
 761       if (BVC.sdk)
 762         W.printString("SDK", MachOObjectFile::getVersionString(BVC.sdk));
 763       else
 764         W.printString("SDK", StringRef("n/a"));
 765       continue;
 766     }
 767
 768     MachO::version_min_command VMC = Obj->getVersionMinLoadCommand(Load);
 769     W.printString("Cmd", Cmd);
 770     W.printNumber("Size", VMC.cmdsize);
 771     SmallString<32> Version;
 772     Version = utostr(MachOObjectFile::getVersionMinMajor(VMC, false)) + "." +
 773               utostr(MachOObjectFile::getVersionMinMinor(VMC, false));
 774     uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, false);
 775     if (Update != 0)
 776       Version += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, false));
 777     W.printString("Version", Version);
 778     SmallString<32> SDK;
 779     if (VMC.sdk == 0)
 780       SDK = "n/a";
 781     else {
 782       SDK = utostr(MachOObjectFile::getVersionMinMajor(VMC, true)) + "." +
 783             utostr(MachOObjectFile::getVersionMinMinor(VMC, true));
 784       uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, true);
 785       if (Update != 0)
 786         SDK += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, true));
 787     }
 788     W.printString("SDK", SDK);
 789   }
 790 }
 791
 792 void MachODumper::printMachODysymtab() {
 793   for (const auto &Load : Obj->load_commands()) {
 794     if (Load.C.cmd == MachO::LC_DYSYMTAB) {
 795       MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand();
 796       DictScope Group(W, "Dysymtab");
 797       W.printNumber("ilocalsym", DLC.ilocalsym);
 798       W.printNumber("nlocalsym", DLC.nlocalsym);
 799       W.printNumber("iextdefsym", DLC.iextdefsym);
 800       W.printNumber("nextdefsym", DLC.nextdefsym);
 801       W.printNumber("iundefsym", DLC.iundefsym);
 802       W.printNumber("nundefsym", DLC.nundefsym);
 803       W.printNumber("tocoff", DLC.tocoff);
 804       W.printNumber("ntoc", DLC.ntoc);
 805       W.printNumber("modtaboff", DLC.modtaboff);
 806       W.printNumber("nmodtab", DLC.nmodtab);
 807       W.printNumber("extrefsymoff", DLC.extrefsymoff);
 808       W.printNumber("nextrefsyms", DLC.nextrefsyms);
 809       W.printNumber("indirectsymoff", DLC.indirectsymoff);
 810       W.printNumber("nindirectsyms", DLC.nindirectsyms);
 811       W.printNumber("extreloff", DLC.extreloff);
 812       W.printNumber("nextrel", DLC.nextrel);
 813       W.printNumber("locreloff", DLC.locreloff);
 814       W.printNumber("nlocrel", DLC.nlocrel);
 815     }
 816   }
 817 }
 818
 819 void MachODumper::printMachOSegment() {
 820   for (const auto &Load : Obj->load_commands()) {
 821     if (Load.C.cmd == MachO::LC_SEGMENT || Load.C.cmd == MachO::LC_SEGMENT_64) {
 822       MachOSegment MOSegment;
 823       getSegment(Obj, Load, MOSegment);
 824       DictScope Group(W, "Segment");
 825       W.printString("Cmd", MOSegment.CmdName);
 826       W.printString("Name", MOSegment.SegName);
 827       W.printNumber("Size", MOSegment.cmdsize);
 828       W.printHex("vmaddr", MOSegment.vmaddr);
 829       W.printHex("vmsize", MOSegment.vmsize);
 830       W.printNumber("fileoff", MOSegment.fileoff);
 831       W.printNumber("filesize", MOSegment.filesize);
 832       W.printString("maxprot", getMask(MOSegment.maxprot));
 833       W.printString("initprot", getMask(MOSegment.initprot));
 834       W.printNumber("nsects", MOSegment.nsects);
 835       W.printHex("flags", MOSegment.flags);
 836     }
 837   }
 838 }
 839
 840 void MachODumper::printMachOIndirectSymbols() {
 841   for (const auto &Load : Obj->load_commands()) {
 842     if (Load.C.cmd == MachO::LC_DYSYMTAB) {
 843       MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand();
 844       DictScope Group(W, "Indirect Symbols");
 845       W.printNumber("Number", DLC.nindirectsyms);
 846       ListScope D(W, "Symbols");
 847       for (unsigned i = 0; i < DLC.nindirectsyms; ++i) {
 848         DictScope Group(W, "Entry");
 849         W.printNumber("Entry Index", i);
 850         W.printHex("Symbol Index", Obj->getIndirectSymbolTableEntry(DLC, i));
 851       }
 852     }
 853   }
 854 }
 855
 856 void MachODumper::printMachOLinkerOptions() {
 857   for (const auto &Load : Obj->load_commands()) {
 858     if (Load.C.cmd == MachO::LC_LINKER_OPTION) {
 859       MachO::linker_option_command LOLC = Obj->getLinkerOptionLoadCommand(Load);
 860       DictScope Group(W, "Linker Options");
 861       W.printNumber("Size", LOLC.cmdsize);
 862       ListScope D(W, "Strings");
 863       uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_option_command);
 864       const char *P = Load.Ptr + sizeof(MachO::linker_option_command);
 865       StringRef Data(P, DataSize);
 866       for (unsigned i = 0; i < LOLC.count; ++i) {
 867         std::pair<StringRef,StringRef> Split = Data.split('\0');
 868         W.printString("Value", Split.first);
 869         Data = Split.second;
 870       }
 871     }
 872   }
 873 }