tools/llvm-readobj/COFFDumper.cpp

   1 //===-- COFFDumper.cpp - COFF-specific dumper -------------------*- C++ -*-===//
   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 /// \file
  11 /// \brief This file implements the COFF-specific dumper for llvm-readobj.
  12 ///
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm-readobj.h"
  16 #include "ARMWinEHPrinter.h"
  17 #include "Error.h"
  18 #include "ObjDumper.h"
  19 #include "StreamWriter.h"
  20 #include "Win64EHDumper.h"
  21 #include "llvm/ADT/DenseMap.h"
  22 #include "llvm/ADT/SmallString.h"
  23 #include "llvm/Object/COFF.h"
  24 #include "llvm/Object/ObjectFile.h"
  25 #include "llvm/Support/COFF.h"
  26 #include "llvm/Support/Casting.h"
  27 #include "llvm/Support/Compiler.h"
  28 #include "llvm/Support/DataExtractor.h"
  29 #include "llvm/Support/Format.h"
  30 #include "llvm/Support/SourceMgr.h"
  31 #include "llvm/Support/Win64EH.h"
  32 #include "llvm/Support/raw_ostream.h"
  33 #include <algorithm>
  34 #include <cstring>
  35 #include <system_error>
  36 #include <time.h>
  37
  38 using namespace llvm;
  39 using namespace llvm::object;
  40 using namespace llvm::Win64EH;
  41
  42 namespace {
  43
  44 class COFFDumper : public ObjDumper {
  45 public:
  46   COFFDumper(const llvm::object::COFFObjectFile *Obj, StreamWriter& Writer)
  47     : ObjDumper(Writer)
  48     , Obj(Obj) {
  49     cacheRelocations();
  50   }
  51
  52   void printFileHeaders() override;
  53   void printSections() override;
  54   void printRelocations() override;
  55   void printSymbols() override;
  56   void printDynamicSymbols() override;
  57   void printUnwindInfo() override;
  58   void printCOFFImports() override;
  59   void printCOFFDirectives() override;
  60
  61 private:
  62   void printSymbol(const SymbolRef &Sym);
  63   void printRelocation(const SectionRef &Section, const RelocationRef &Reloc);
  64   void printDataDirectory(uint32_t Index, const std::string &FieldName);
  65
  66   void printDOSHeader(const dos_header *DH);
  67   template <class PEHeader> void printPEHeader(const PEHeader *Hdr);
  68   void printBaseOfDataField(const pe32_header *Hdr);
  69   void printBaseOfDataField(const pe32plus_header *Hdr);
  70
  71   void printCodeViewLineTables(const SectionRef &Section);
  72
  73   void printCodeViewSymbolsSubsection(StringRef Subsection,
  74                                       const SectionRef &Section,
  75                                       uint32_t Offset);
  76
  77   void cacheRelocations();
  78
  79   std::error_code resolveSymbol(const coff_section *Section, uint64_t Offset,
  80                                 SymbolRef &Sym);
  81   std::error_code resolveSymbolName(const coff_section *Section,
  82                                     uint64_t Offset, StringRef &Name);
  83   void printImportedSymbols(iterator_range<imported_symbol_iterator> Range);
  84   void printDelayImportedSymbols(
  85       const DelayImportDirectoryEntryRef &I,
  86       iterator_range<imported_symbol_iterator> Range);
  87
  88   typedef DenseMap<const coff_section*, std::vector<RelocationRef> > RelocMapTy;
  89
  90   const llvm::object::COFFObjectFile *Obj;
  91   RelocMapTy RelocMap;
  92   StringRef CVFileIndexToStringOffsetTable;
  93   StringRef CVStringTable;
  94 };
  95
  96 } // namespace
  97
  98
  99 namespace llvm {
 100
 101 std::error_code createCOFFDumper(const object::ObjectFile *Obj,
 102                                  StreamWriter &Writer,
 103                                  std::unique_ptr<ObjDumper> &Result) {
 104   const COFFObjectFile *COFFObj = dyn_cast<COFFObjectFile>(Obj);
 105   if (!COFFObj)
 106     return readobj_error::unsupported_obj_file_format;
 107
 108   Result.reset(new COFFDumper(COFFObj, Writer));
 109   return readobj_error::success;
 110 }
 111
 112 } // namespace llvm
 113
 114 // Given a a section and an offset into this section the function returns the
 115 // symbol used for the relocation at the offset.
 116 std::error_code COFFDumper::resolveSymbol(const coff_section *Section,
 117                                           uint64_t Offset, SymbolRef &Sym) {
 118   const auto &Relocations = RelocMap[Section];
 119   for (const auto &Relocation : Relocations) {
 120     uint64_t RelocationOffset;
 121     if (std::error_code EC = Relocation.getOffset(RelocationOffset))
 122       return EC;
 123
 124     if (RelocationOffset == Offset) {
 125       Sym = *Relocation.getSymbol();
 126       return readobj_error::success;
 127     }
 128   }
 129   return readobj_error::unknown_symbol;
 130 }
 131
 132 // Given a section and an offset into this section the function returns the name
 133 // of the symbol used for the relocation at the offset.
 134 std::error_code COFFDumper::resolveSymbolName(const coff_section *Section,
 135                                               uint64_t Offset,
 136                                               StringRef &Name) {
 137   SymbolRef Symbol;
 138   if (std::error_code EC = resolveSymbol(Section, Offset, Symbol))
 139     return EC;
 140   if (std::error_code EC = Symbol.getName(Name))
 141     return EC;
 142   return object_error::success;
 143 }
 144
 145 static const EnumEntry<COFF::MachineTypes> ImageFileMachineType[] = {
 146   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_UNKNOWN  ),
 147   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AM33     ),
 148   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AMD64    ),
 149   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARM      ),
 150   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARMNT    ),
 151   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_EBC      ),
 152   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_I386     ),
 153   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_IA64     ),
 154   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_M32R     ),
 155   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPS16   ),
 156   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU  ),
 157   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU16),
 158   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPC  ),
 159   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPCFP),
 160   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_R4000    ),
 161   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3      ),
 162   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3DSP   ),
 163   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH4      ),
 164   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH5      ),
 165   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_THUMB    ),
 166   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_WCEMIPSV2)
 167 };
 168
 169 static const EnumEntry<COFF::Characteristics> ImageFileCharacteristics[] = {
 170   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_RELOCS_STRIPPED        ),
 171   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_EXECUTABLE_IMAGE       ),
 172   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LINE_NUMS_STRIPPED     ),
 173   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LOCAL_SYMS_STRIPPED    ),
 174   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_AGGRESSIVE_WS_TRIM     ),
 175   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LARGE_ADDRESS_AWARE    ),
 176   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_LO      ),
 177   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_32BIT_MACHINE          ),
 178   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DEBUG_STRIPPED         ),
 179   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP),
 180   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_NET_RUN_FROM_SWAP      ),
 181   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_SYSTEM                 ),
 182   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DLL                    ),
 183   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_UP_SYSTEM_ONLY         ),
 184   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_HI      )
 185 };
 186
 187 static const EnumEntry<COFF::WindowsSubsystem> PEWindowsSubsystem[] = {
 188   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_UNKNOWN                ),
 189   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_NATIVE                 ),
 190   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_GUI            ),
 191   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CUI            ),
 192   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_POSIX_CUI              ),
 193   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI         ),
 194   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_APPLICATION        ),
 195   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER),
 196   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER     ),
 197   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_ROM                ),
 198   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_XBOX                   ),
 199 };
 200
 201 static const EnumEntry<COFF::DLLCharacteristics> PEDLLCharacteristics[] = {
 202   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA      ),
 203   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE         ),
 204   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY      ),
 205   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT            ),
 206   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION         ),
 207   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_SEH               ),
 208   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_BIND              ),
 209   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_APPCONTAINER         ),
 210   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER           ),
 211   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_GUARD_CF             ),
 212   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE),
 213 };
 214
 215 static const EnumEntry<COFF::SectionCharacteristics>
 216 ImageSectionCharacteristics[] = {
 217   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_TYPE_NO_PAD           ),
 218   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_CODE              ),
 219   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_INITIALIZED_DATA  ),
 220   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_UNINITIALIZED_DATA),
 221   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_OTHER             ),
 222   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_INFO              ),
 223   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_REMOVE            ),
 224   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_COMDAT            ),
 225   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_GPREL                 ),
 226   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PURGEABLE         ),
 227   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_16BIT             ),
 228   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_LOCKED            ),
 229   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PRELOAD           ),
 230   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1BYTES          ),
 231   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2BYTES          ),
 232   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4BYTES          ),
 233   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8BYTES          ),
 234   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_16BYTES         ),
 235   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_32BYTES         ),
 236   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_64BYTES         ),
 237   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_128BYTES        ),
 238   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_256BYTES        ),
 239   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_512BYTES        ),
 240   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1024BYTES       ),
 241   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2048BYTES       ),
 242   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4096BYTES       ),
 243   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8192BYTES       ),
 244   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_NRELOC_OVFL       ),
 245   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_DISCARDABLE       ),
 246   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_CACHED        ),
 247   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_PAGED         ),
 248   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_SHARED            ),
 249   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_EXECUTE           ),
 250   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_READ              ),
 251   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_WRITE             )
 252 };
 253
 254 static const EnumEntry<COFF::SymbolBaseType> ImageSymType[] = {
 255   { "Null"  , COFF::IMAGE_SYM_TYPE_NULL   },
 256   { "Void"  , COFF::IMAGE_SYM_TYPE_VOID   },
 257   { "Char"  , COFF::IMAGE_SYM_TYPE_CHAR   },
 258   { "Short" , COFF::IMAGE_SYM_TYPE_SHORT  },
 259   { "Int"   , COFF::IMAGE_SYM_TYPE_INT    },
 260   { "Long"  , COFF::IMAGE_SYM_TYPE_LONG   },
 261   { "Float" , COFF::IMAGE_SYM_TYPE_FLOAT  },
 262   { "Double", COFF::IMAGE_SYM_TYPE_DOUBLE },
 263   { "Struct", COFF::IMAGE_SYM_TYPE_STRUCT },
 264   { "Union" , COFF::IMAGE_SYM_TYPE_UNION  },
 265   { "Enum"  , COFF::IMAGE_SYM_TYPE_ENUM   },
 266   { "MOE"   , COFF::IMAGE_SYM_TYPE_MOE    },
 267   { "Byte"  , COFF::IMAGE_SYM_TYPE_BYTE   },
 268   { "Word"  , COFF::IMAGE_SYM_TYPE_WORD   },
 269   { "UInt"  , COFF::IMAGE_SYM_TYPE_UINT   },
 270   { "DWord" , COFF::IMAGE_SYM_TYPE_DWORD  }
 271 };
 272
 273 static const EnumEntry<COFF::SymbolComplexType> ImageSymDType[] = {
 274   { "Null"    , COFF::IMAGE_SYM_DTYPE_NULL     },
 275   { "Pointer" , COFF::IMAGE_SYM_DTYPE_POINTER  },
 276   { "Function", COFF::IMAGE_SYM_DTYPE_FUNCTION },
 277   { "Array"   , COFF::IMAGE_SYM_DTYPE_ARRAY    }
 278 };
 279
 280 static const EnumEntry<COFF::SymbolStorageClass> ImageSymClass[] = {
 281   { "EndOfFunction"  , COFF::IMAGE_SYM_CLASS_END_OF_FUNCTION  },
 282   { "Null"           , COFF::IMAGE_SYM_CLASS_NULL             },
 283   { "Automatic"      , COFF::IMAGE_SYM_CLASS_AUTOMATIC        },
 284   { "External"       , COFF::IMAGE_SYM_CLASS_EXTERNAL         },
 285   { "Static"         , COFF::IMAGE_SYM_CLASS_STATIC           },
 286   { "Register"       , COFF::IMAGE_SYM_CLASS_REGISTER         },
 287   { "ExternalDef"    , COFF::IMAGE_SYM_CLASS_EXTERNAL_DEF     },
 288   { "Label"          , COFF::IMAGE_SYM_CLASS_LABEL            },
 289   { "UndefinedLabel" , COFF::IMAGE_SYM_CLASS_UNDEFINED_LABEL  },
 290   { "MemberOfStruct" , COFF::IMAGE_SYM_CLASS_MEMBER_OF_STRUCT },
 291   { "Argument"       , COFF::IMAGE_SYM_CLASS_ARGUMENT         },
 292   { "StructTag"      , COFF::IMAGE_SYM_CLASS_STRUCT_TAG       },
 293   { "MemberOfUnion"  , COFF::IMAGE_SYM_CLASS_MEMBER_OF_UNION  },
 294   { "UnionTag"       , COFF::IMAGE_SYM_CLASS_UNION_TAG        },
 295   { "TypeDefinition" , COFF::IMAGE_SYM_CLASS_TYPE_DEFINITION  },
 296   { "UndefinedStatic", COFF::IMAGE_SYM_CLASS_UNDEFINED_STATIC },
 297   { "EnumTag"        , COFF::IMAGE_SYM_CLASS_ENUM_TAG         },
 298   { "MemberOfEnum"   , COFF::IMAGE_SYM_CLASS_MEMBER_OF_ENUM   },
 299   { "RegisterParam"  , COFF::IMAGE_SYM_CLASS_REGISTER_PARAM   },
 300   { "BitField"       , COFF::IMAGE_SYM_CLASS_BIT_FIELD        },
 301   { "Block"          , COFF::IMAGE_SYM_CLASS_BLOCK            },
 302   { "Function"       , COFF::IMAGE_SYM_CLASS_FUNCTION         },
 303   { "EndOfStruct"    , COFF::IMAGE_SYM_CLASS_END_OF_STRUCT    },
 304   { "File"           , COFF::IMAGE_SYM_CLASS_FILE             },
 305   { "Section"        , COFF::IMAGE_SYM_CLASS_SECTION          },
 306   { "WeakExternal"   , COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL    },
 307   { "CLRToken"       , COFF::IMAGE_SYM_CLASS_CLR_TOKEN        }
 308 };
 309
 310 static const EnumEntry<COFF::COMDATType> ImageCOMDATSelect[] = {
 311   { "NoDuplicates", COFF::IMAGE_COMDAT_SELECT_NODUPLICATES },
 312   { "Any"         , COFF::IMAGE_COMDAT_SELECT_ANY          },
 313   { "SameSize"    , COFF::IMAGE_COMDAT_SELECT_SAME_SIZE    },
 314   { "ExactMatch"  , COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH  },
 315   { "Associative" , COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE  },
 316   { "Largest"     , COFF::IMAGE_COMDAT_SELECT_LARGEST      },
 317   { "Newest"      , COFF::IMAGE_COMDAT_SELECT_NEWEST       }
 318 };
 319
 320 static const EnumEntry<COFF::WeakExternalCharacteristics>
 321 WeakExternalCharacteristics[] = {
 322   { "NoLibrary", COFF::IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY },
 323   { "Library"  , COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY   },
 324   { "Alias"    , COFF::IMAGE_WEAK_EXTERN_SEARCH_ALIAS     }
 325 };
 326
 327 template <typename T>
 328 static std::error_code getSymbolAuxData(const COFFObjectFile *Obj,
 329                                         COFFSymbolRef Symbol,
 330                                         uint8_t AuxSymbolIdx, const T *&Aux) {
 331   ArrayRef<uint8_t> AuxData = Obj->getSymbolAuxData(Symbol);
 332   AuxData = AuxData.slice(AuxSymbolIdx * Obj->getSymbolTableEntrySize());
 333   Aux = reinterpret_cast<const T*>(AuxData.data());
 334   return readobj_error::success;
 335 }
 336
 337 void COFFDumper::cacheRelocations() {
 338   for (const SectionRef &S : Obj->sections()) {
 339     const coff_section *Section = Obj->getCOFFSection(S);
 340
 341     for (const RelocationRef &Reloc : S.relocations())
 342       RelocMap[Section].push_back(Reloc);
 343
 344     // Sort relocations by address.
 345     std::sort(RelocMap[Section].begin(), RelocMap[Section].end(),
 346               relocAddressLess);
 347   }
 348 }
 349
 350 void COFFDumper::printDataDirectory(uint32_t Index, const std::string &FieldName) {
 351   const data_directory *Data;
 352   if (Obj->getDataDirectory(Index, Data))
 353     return;
 354   W.printHex(FieldName + "RVA", Data->RelativeVirtualAddress);
 355   W.printHex(FieldName + "Size", Data->Size);
 356 }
 357
 358 void COFFDumper::printFileHeaders() {
 359   time_t TDS = Obj->getTimeDateStamp();
 360   char FormattedTime[20] = { };
 361   strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS));
 362
 363   {
 364     DictScope D(W, "ImageFileHeader");
 365     W.printEnum  ("Machine", Obj->getMachine(),
 366                     makeArrayRef(ImageFileMachineType));
 367     W.printNumber("SectionCount", Obj->getNumberOfSections());
 368     W.printHex   ("TimeDateStamp", FormattedTime, Obj->getTimeDateStamp());
 369     W.printHex   ("PointerToSymbolTable", Obj->getPointerToSymbolTable());
 370     W.printNumber("SymbolCount", Obj->getNumberOfSymbols());
 371     W.printNumber("OptionalHeaderSize", Obj->getSizeOfOptionalHeader());
 372     W.printFlags ("Characteristics", Obj->getCharacteristics(),
 373                     makeArrayRef(ImageFileCharacteristics));
 374   }
 375
 376   // Print PE header. This header does not exist if this is an object file and
 377   // not an executable.
 378   const pe32_header *PEHeader = nullptr;
 379   if (error(Obj->getPE32Header(PEHeader)))
 380     return;
 381   if (PEHeader)
 382     printPEHeader<pe32_header>(PEHeader);
 383
 384   const pe32plus_header *PEPlusHeader = nullptr;
 385   if (error(Obj->getPE32PlusHeader(PEPlusHeader)))
 386     return;
 387   if (PEPlusHeader)
 388     printPEHeader<pe32plus_header>(PEPlusHeader);
 389
 390   if (const dos_header *DH = Obj->getDOSHeader())
 391     printDOSHeader(DH);
 392 }
 393
 394 void COFFDumper::printDOSHeader(const dos_header *DH) {
 395   DictScope D(W, "DOSHeader");
 396   W.printString("Magic", StringRef(DH->Magic, sizeof(DH->Magic)));
 397   W.printNumber("UsedBytesInTheLastPage", DH->UsedBytesInTheLastPage);
 398   W.printNumber("FileSizeInPages", DH->FileSizeInPages);
 399   W.printNumber("NumberOfRelocationItems", DH->NumberOfRelocationItems);
 400   W.printNumber("HeaderSizeInParagraphs", DH->HeaderSizeInParagraphs);
 401   W.printNumber("MinimumExtraParagraphs", DH->MinimumExtraParagraphs);
 402   W.printNumber("MaximumExtraParagraphs", DH->MaximumExtraParagraphs);
 403   W.printNumber("InitialRelativeSS", DH->InitialRelativeSS);
 404   W.printNumber("InitialSP", DH->InitialSP);
 405   W.printNumber("Checksum", DH->Checksum);
 406   W.printNumber("InitialIP", DH->InitialIP);
 407   W.printNumber("InitialRelativeCS", DH->InitialRelativeCS);
 408   W.printNumber("AddressOfRelocationTable", DH->AddressOfRelocationTable);
 409   W.printNumber("OverlayNumber", DH->OverlayNumber);
 410   W.printNumber("OEMid", DH->OEMid);
 411   W.printNumber("OEMinfo", DH->OEMinfo);
 412   W.printNumber("AddressOfNewExeHeader", DH->AddressOfNewExeHeader);
 413 }
 414
 415 template <class PEHeader>
 416 void COFFDumper::printPEHeader(const PEHeader *Hdr) {
 417   DictScope D(W, "ImageOptionalHeader");
 418   W.printNumber("MajorLinkerVersion", Hdr->MajorLinkerVersion);
 419   W.printNumber("MinorLinkerVersion", Hdr->MinorLinkerVersion);
 420   W.printNumber("SizeOfCode", Hdr->SizeOfCode);
 421   W.printNumber("SizeOfInitializedData", Hdr->SizeOfInitializedData);
 422   W.printNumber("SizeOfUninitializedData", Hdr->SizeOfUninitializedData);
 423   W.printHex   ("AddressOfEntryPoint", Hdr->AddressOfEntryPoint);
 424   W.printHex   ("BaseOfCode", Hdr->BaseOfCode);
 425   printBaseOfDataField(Hdr);
 426   W.printHex   ("ImageBase", Hdr->ImageBase);
 427   W.printNumber("SectionAlignment", Hdr->SectionAlignment);
 428   W.printNumber("FileAlignment", Hdr->FileAlignment);
 429   W.printNumber("MajorOperatingSystemVersion",
 430                 Hdr->MajorOperatingSystemVersion);
 431   W.printNumber("MinorOperatingSystemVersion",
 432                 Hdr->MinorOperatingSystemVersion);
 433   W.printNumber("MajorImageVersion", Hdr->MajorImageVersion);
 434   W.printNumber("MinorImageVersion", Hdr->MinorImageVersion);
 435   W.printNumber("MajorSubsystemVersion", Hdr->MajorSubsystemVersion);
 436   W.printNumber("MinorSubsystemVersion", Hdr->MinorSubsystemVersion);
 437   W.printNumber("SizeOfImage", Hdr->SizeOfImage);
 438   W.printNumber("SizeOfHeaders", Hdr->SizeOfHeaders);
 439   W.printEnum  ("Subsystem", Hdr->Subsystem, makeArrayRef(PEWindowsSubsystem));
 440   W.printFlags ("Subsystem", Hdr->DLLCharacteristics,
 441                 makeArrayRef(PEDLLCharacteristics));
 442   W.printNumber("SizeOfStackReserve", Hdr->SizeOfStackReserve);
 443   W.printNumber("SizeOfStackCommit", Hdr->SizeOfStackCommit);
 444   W.printNumber("SizeOfHeapReserve", Hdr->SizeOfHeapReserve);
 445   W.printNumber("SizeOfHeapCommit", Hdr->SizeOfHeapCommit);
 446   W.printNumber("NumberOfRvaAndSize", Hdr->NumberOfRvaAndSize);
 447
 448   if (Hdr->NumberOfRvaAndSize > 0) {
 449     DictScope D(W, "DataDirectory");
 450     static const char * const directory[] = {
 451       "ExportTable", "ImportTable", "ResourceTable", "ExceptionTable",
 452       "CertificateTable", "BaseRelocationTable", "Debug", "Architecture",
 453       "GlobalPtr", "TLSTable", "LoadConfigTable", "BoundImport", "IAT",
 454       "DelayImportDescriptor", "CLRRuntimeHeader", "Reserved"
 455     };
 456
 457     for (uint32_t i = 0; i < Hdr->NumberOfRvaAndSize; ++i) {
 458       printDataDirectory(i, directory[i]);
 459     }
 460   }
 461 }
 462
 463 void COFFDumper::printBaseOfDataField(const pe32_header *Hdr) {
 464   W.printHex("BaseOfData", Hdr->BaseOfData);
 465 }
 466
 467 void COFFDumper::printBaseOfDataField(const pe32plus_header *) {}
 468
 469 void COFFDumper::printCodeViewLineTables(const SectionRef &Section) {
 470   StringRef Data;
 471   if (error(Section.getContents(Data)))
 472     return;
 473
 474   SmallVector<StringRef, 10> FunctionNames;
 475   StringMap<StringRef> FunctionLineTables;
 476
 477   ListScope D(W, "CodeViewLineTables");
 478   {
 479     // FIXME: Add more offset correctness checks.
 480     DataExtractor DE(Data, true, 4);
 481     uint32_t Offset = 0,
 482              Magic = DE.getU32(&Offset);
 483     W.printHex("Magic", Magic);
 484     if (Magic != COFF::DEBUG_SECTION_MAGIC) {
 485       error(object_error::parse_failed);
 486       return;
 487     }
 488
 489     bool Finished = false;
 490     while (DE.isValidOffset(Offset) && !Finished) {
 491       // The section consists of a number of subsection in the following format:
 492       // |Type|PayloadSize|Payload...|
 493       uint32_t SubSectionType = DE.getU32(&Offset),
 494                PayloadSize = DE.getU32(&Offset);
 495       ListScope S(W, "Subsection");
 496       W.printHex("Type", SubSectionType);
 497       W.printHex("PayloadSize", PayloadSize);
 498       if (PayloadSize > Data.size() - Offset) {
 499         error(object_error::parse_failed);
 500         return;
 501       }
 502
 503       // Print the raw contents to simplify debugging if anything goes wrong
 504       // afterwards.
 505       StringRef Contents = Data.substr(Offset, PayloadSize);
 506       W.printBinaryBlock("Contents", Contents);
 507
 508       switch (SubSectionType) {
 509       case COFF::DEBUG_SYMBOL_SUBSECTION:
 510         printCodeViewSymbolsSubsection(Contents, Section, Offset);
 511         break;
 512       case COFF::DEBUG_LINE_TABLE_SUBSECTION: {
 513         // Holds a PC to file:line table.  Some data to parse this subsection is
 514         // stored in the other subsections, so just check sanity and store the
 515         // pointers for deferred processing.
 516
 517         if (PayloadSize < 12) {
 518           // There should be at least three words to store two function
 519           // relocations and size of the code.
 520           error(object_error::parse_failed);
 521           return;
 522         }
 523
 524         StringRef FunctionName;
 525         if (error(resolveSymbolName(Obj->getCOFFSection(Section), Offset,
 526                                     FunctionName)))
 527           return;
 528         W.printString("FunctionName", FunctionName);
 529         if (FunctionLineTables.count(FunctionName) != 0) {
 530           // Saw debug info for this function already?
 531           error(object_error::parse_failed);
 532           return;
 533         }
 534
 535         FunctionLineTables[FunctionName] = Contents;
 536         FunctionNames.push_back(FunctionName);
 537         break;
 538       }
 539       case COFF::DEBUG_STRING_TABLE_SUBSECTION:
 540         if (PayloadSize == 0 || CVStringTable.data() != nullptr ||
 541             Contents.back() != '\0') {
 542           // Empty or duplicate or non-null-terminated subsection.
 543           error(object_error::parse_failed);
 544           return;
 545         }
 546         CVStringTable = Contents;
 547         break;
 548       case COFF::DEBUG_INDEX_SUBSECTION:
 549         // Holds the translation table from file indices
 550         // to offsets in the string table.
 551
 552         if (PayloadSize == 0 ||
 553             CVFileIndexToStringOffsetTable.data() != nullptr) {
 554           // Empty or duplicate subsection.
 555           error(object_error::parse_failed);
 556           return;
 557         }
 558         CVFileIndexToStringOffsetTable = Contents;
 559         break;
 560       }
 561       Offset += PayloadSize;
 562
 563       // Align the reading pointer by 4.
 564       Offset += (-Offset) % 4;
 565     }
 566   }
 567
 568   // Dump the line tables now that we've read all the subsections and know all
 569   // the required information.
 570   for (unsigned I = 0, E = FunctionNames.size(); I != E; ++I) {
 571     StringRef Name = FunctionNames[I];
 572     ListScope S(W, "FunctionLineTable");
 573     W.printString("FunctionName", Name);
 574
 575     DataExtractor DE(FunctionLineTables[Name], true, 4);
 576     uint32_t Offset = 8;  // Skip relocations.
 577     uint32_t FunctionSize = DE.getU32(&Offset);
 578     W.printHex("CodeSize", FunctionSize);
 579     while (DE.isValidOffset(Offset)) {
 580       // For each range of lines with the same filename, we have a segment
 581       // in the line table.  The filename string is accessed using double
 582       // indirection to the string table subsection using the index subsection.
 583       uint32_t OffsetInIndex = DE.getU32(&Offset),
 584                SegmentLength   = DE.getU32(&Offset),
 585                FullSegmentSize = DE.getU32(&Offset);
 586       if (FullSegmentSize != 12 + 8 * SegmentLength) {
 587         error(object_error::parse_failed);
 588         return;
 589       }
 590
 591       uint32_t FilenameOffset;
 592       {
 593         DataExtractor SDE(CVFileIndexToStringOffsetTable, true, 4);
 594         uint32_t OffsetInSDE = OffsetInIndex;
 595         if (!SDE.isValidOffset(OffsetInSDE)) {
 596           error(object_error::parse_failed);
 597           return;
 598         }
 599         FilenameOffset = SDE.getU32(&OffsetInSDE);
 600       }
 601
 602       if (FilenameOffset == 0 || FilenameOffset + 1 >= CVStringTable.size() ||
 603           CVStringTable.data()[FilenameOffset - 1] != '\0') {
 604         // Each string in an F3 subsection should be preceded by a null
 605         // character.
 606         error(object_error::parse_failed);
 607         return;
 608       }
 609
 610       StringRef Filename(CVStringTable.data() + FilenameOffset);
 611       ListScope S(W, "FilenameSegment");
 612       W.printString("Filename", Filename);
 613       for (unsigned J = 0; J != SegmentLength && DE.isValidOffset(Offset);
 614            ++J) {
 615         // Then go the (PC, LineNumber) pairs.  The line number is stored in the
 616         // least significant 31 bits of the respective word in the table.
 617         uint32_t PC = DE.getU32(&Offset),
 618                  LineNumber = DE.getU32(&Offset) & 0x7fffffff;
 619         if (PC >= FunctionSize) {
 620           error(object_error::parse_failed);
 621           return;
 622         }
 623         char Buffer[32];
 624         format("+0x%X", PC).snprint(Buffer, 32);
 625         W.printNumber(Buffer, LineNumber);
 626       }
 627     }
 628   }
 629 }
 630
 631 void COFFDumper::printCodeViewSymbolsSubsection(StringRef Subsection,
 632                                                 const SectionRef &Section,
 633                                                 uint32_t OffsetInSection) {
 634   if (Subsection.size() == 0) {
 635     error(object_error::parse_failed);
 636     return;
 637   }
 638   DataExtractor DE(Subsection, true, 4);
 639   uint32_t Offset = 0;
 640
 641   // Function-level subsections have "procedure start" and "procedure end"
 642   // commands that should come in pairs and surround relevant info.
 643   bool InFunctionScope = false;
 644   while (DE.isValidOffset(Offset)) {
 645     // Read subsection segments one by one.
 646     uint16_t Size = DE.getU16(&Offset);
 647     // The section size includes the size of the type identifier.
 648     if (Size < 2 || !DE.isValidOffsetForDataOfSize(Offset, Size)) {
 649       error(object_error::parse_failed);
 650       return;
 651     }
 652     Size -= 2;
 653     uint16_t Type = DE.getU16(&Offset);
 654     switch (Type) {
 655     case COFF::DEBUG_SYMBOL_TYPE_PROC_START: {
 656       DictScope S(W, "ProcStart");
 657       if (InFunctionScope || Size < 36) {
 658         error(object_error::parse_failed);
 659         return;
 660       }
 661       InFunctionScope = true;
 662
 663       // We're currently interested in a limited subset of fields in this
 664       // segment, just ignore the rest of the fields for now.
 665       uint8_t Unused[12];
 666       DE.getU8(&Offset, Unused, 12);
 667       uint32_t CodeSize = DE.getU32(&Offset);
 668       DE.getU8(&Offset, Unused, 12);
 669       StringRef SectionName;
 670       if (error(resolveSymbolName(Obj->getCOFFSection(Section),
 671                                   OffsetInSection + Offset, SectionName)))
 672         return;
 673       Offset += 4;
 674       DE.getU8(&Offset, Unused, 3);
 675       StringRef DisplayName = DE.getCStr(&Offset);
 676       if (!DE.isValidOffset(Offset)) {
 677         error(object_error::parse_failed);
 678         return;
 679       }
 680       W.printString("DisplayName", DisplayName);
 681       W.printString("Section", SectionName);
 682       W.printHex("CodeSize", CodeSize);
 683
 684       break;
 685     }
 686     case COFF::DEBUG_SYMBOL_TYPE_PROC_END: {
 687       W.startLine() << "ProcEnd\n";
 688       if (!InFunctionScope || Size > 0) {
 689         error(object_error::parse_failed);
 690         return;
 691       }
 692       InFunctionScope = false;
 693       break;
 694     }
 695     default:
 696       Offset += Size;
 697       break;
 698     }
 699   }
 700
 701   if (InFunctionScope)
 702     error(object_error::parse_failed);
 703 }
 704
 705 void COFFDumper::printSections() {
 706   ListScope SectionsD(W, "Sections");
 707   int SectionNumber = 0;
 708   for (const SectionRef &Sec : Obj->sections()) {
 709     ++SectionNumber;
 710     const coff_section *Section = Obj->getCOFFSection(Sec);
 711
 712     StringRef Name;
 713     if (error(Sec.getName(Name)))
 714       Name = "";
 715
 716     DictScope D(W, "Section");
 717     W.printNumber("Number", SectionNumber);
 718     W.printBinary("Name", Name, Section->Name);
 719     W.printHex   ("VirtualSize", Section->VirtualSize);
 720     W.printHex   ("VirtualAddress", Section->VirtualAddress);
 721     W.printNumber("RawDataSize", Section->SizeOfRawData);
 722     W.printHex   ("PointerToRawData", Section->PointerToRawData);
 723     W.printHex   ("PointerToRelocations", Section->PointerToRelocations);
 724     W.printHex   ("PointerToLineNumbers", Section->PointerToLinenumbers);
 725     W.printNumber("RelocationCount", Section->NumberOfRelocations);
 726     W.printNumber("LineNumberCount", Section->NumberOfLinenumbers);
 727     W.printFlags ("Characteristics", Section->Characteristics,
 728                     makeArrayRef(ImageSectionCharacteristics),
 729                     COFF::SectionCharacteristics(0x00F00000));
 730
 731     if (opts::SectionRelocations) {
 732       ListScope D(W, "Relocations");
 733       for (const RelocationRef &Reloc : Sec.relocations())
 734         printRelocation(Sec, Reloc);
 735     }
 736
 737     if (opts::SectionSymbols) {
 738       ListScope D(W, "Symbols");
 739       for (const SymbolRef &Symbol : Obj->symbols()) {
 740         if (!Sec.containsSymbol(Symbol))
 741           continue;
 742
 743         printSymbol(Symbol);
 744       }
 745     }
 746
 747     if (Name == ".debug$S" && opts::CodeViewLineTables)
 748       printCodeViewLineTables(Sec);
 749
 750     if (opts::SectionData &&
 751         !(Section->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)) {
 752       StringRef Data;
 753       if (error(Sec.getContents(Data)))
 754         break;
 755
 756       W.printBinaryBlock("SectionData", Data);
 757     }
 758   }
 759 }
 760
 761 void COFFDumper::printRelocations() {
 762   ListScope D(W, "Relocations");
 763
 764   int SectionNumber = 0;
 765   for (const SectionRef &Section : Obj->sections()) {
 766     ++SectionNumber;
 767     StringRef Name;
 768     if (error(Section.getName(Name)))
 769       continue;
 770
 771     bool PrintedGroup = false;
 772     for (const RelocationRef &Reloc : Section.relocations()) {
 773       if (!PrintedGroup) {
 774         W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
 775         W.indent();
 776         PrintedGroup = true;
 777       }
 778
 779       printRelocation(Section, Reloc);
 780     }
 781
 782     if (PrintedGroup) {
 783       W.unindent();
 784       W.startLine() << "}\n";
 785     }
 786   }
 787 }
 788
 789 void COFFDumper::printRelocation(const SectionRef &Section,
 790                                  const RelocationRef &Reloc) {
 791   uint64_t Offset;
 792   uint64_t RelocType;
 793   SmallString<32> RelocName;
 794   StringRef SymbolName;
 795   StringRef Contents;
 796   if (error(Reloc.getOffset(Offset)))
 797     return;
 798   if (error(Reloc.getType(RelocType)))
 799     return;
 800   if (error(Reloc.getTypeName(RelocName)))
 801     return;
 802   symbol_iterator Symbol = Reloc.getSymbol();
 803   if (error(Symbol->getName(SymbolName)))
 804     return;
 805   if (error(Section.getContents(Contents)))
 806     return;
 807
 808   if (opts::ExpandRelocs) {
 809     DictScope Group(W, "Relocation");
 810     W.printHex("Offset", Offset);
 811     W.printNumber("Type", RelocName, RelocType);
 812     W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-");
 813   } else {
 814     raw_ostream& OS = W.startLine();
 815     OS << W.hex(Offset)
 816        << " " << RelocName
 817        << " " << (SymbolName.size() > 0 ? SymbolName : "-")
 818        << "\n";
 819   }
 820 }
 821
 822 void COFFDumper::printSymbols() {
 823   ListScope Group(W, "Symbols");
 824
 825   for (const SymbolRef &Symbol : Obj->symbols())
 826     printSymbol(Symbol);
 827 }
 828
 829 void COFFDumper::printDynamicSymbols() { ListScope Group(W, "DynamicSymbols"); }
 830
 831 static StringRef getSectionName(const llvm::object::COFFObjectFile *Obj,
 832                                 COFFSymbolRef Symbol,
 833                                 const coff_section *Section) {
 834   if (Section) {
 835     StringRef SectionName;
 836     Obj->getSectionName(Section, SectionName);
 837     return SectionName;
 838   }
 839   int32_t SectionNumber = Symbol.getSectionNumber();
 840   if (SectionNumber == llvm::COFF::IMAGE_SYM_DEBUG)
 841     return "IMAGE_SYM_DEBUG";
 842   if (SectionNumber == llvm::COFF::IMAGE_SYM_ABSOLUTE)
 843     return "IMAGE_SYM_ABSOLUTE";
 844   if (SectionNumber == llvm::COFF::IMAGE_SYM_UNDEFINED)
 845     return "IMAGE_SYM_UNDEFINED";
 846   return "";
 847 }
 848
 849 void COFFDumper::printSymbol(const SymbolRef &Sym) {
 850   DictScope D(W, "Symbol");
 851
 852   COFFSymbolRef Symbol = Obj->getCOFFSymbol(Sym);
 853   const coff_section *Section;
 854   if (std::error_code EC = Obj->getSection(Symbol.getSectionNumber(), Section)) {
 855     W.startLine() << "Invalid section number: " << EC.message() << "\n";
 856     W.flush();
 857     return;
 858   }
 859
 860   StringRef SymbolName;
 861   if (Obj->getSymbolName(Symbol, SymbolName))
 862     SymbolName = "";
 863
 864   StringRef SectionName = getSectionName(Obj, Symbol, Section);
 865
 866   W.printString("Name", SymbolName);
 867   W.printNumber("Value", Symbol.getValue());
 868   W.printNumber("Section", SectionName, Symbol.getSectionNumber());
 869   W.printEnum  ("BaseType", Symbol.getBaseType(), makeArrayRef(ImageSymType));
 870   W.printEnum  ("ComplexType", Symbol.getComplexType(),
 871                                                    makeArrayRef(ImageSymDType));
 872   W.printEnum  ("StorageClass", Symbol.getStorageClass(),
 873                                                    makeArrayRef(ImageSymClass));
 874   W.printNumber("AuxSymbolCount", Symbol.getNumberOfAuxSymbols());
 875
 876   for (uint8_t I = 0; I < Symbol.getNumberOfAuxSymbols(); ++I) {
 877     if (Symbol.isFunctionDefinition()) {
 878       const coff_aux_function_definition *Aux;
 879       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 880         break;
 881
 882       DictScope AS(W, "AuxFunctionDef");
 883       W.printNumber("TagIndex", Aux->TagIndex);
 884       W.printNumber("TotalSize", Aux->TotalSize);
 885       W.printHex("PointerToLineNumber", Aux->PointerToLinenumber);
 886       W.printHex("PointerToNextFunction", Aux->PointerToNextFunction);
 887
 888     } else if (Symbol.isAnyUndefined()) {
 889       const coff_aux_weak_external *Aux;
 890       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 891         break;
 892
 893       ErrorOr<COFFSymbolRef> Linked = Obj->getSymbol(Aux->TagIndex);
 894       StringRef LinkedName;
 895       std::error_code EC = Linked.getError();
 896       if (EC || (EC = Obj->getSymbolName(*Linked, LinkedName))) {
 897         LinkedName = "";
 898         error(EC);
 899       }
 900
 901       DictScope AS(W, "AuxWeakExternal");
 902       W.printNumber("Linked", LinkedName, Aux->TagIndex);
 903       W.printEnum  ("Search", Aux->Characteristics,
 904                     makeArrayRef(WeakExternalCharacteristics));
 905
 906     } else if (Symbol.isFileRecord()) {
 907       const char *FileName;
 908       if (error(getSymbolAuxData(Obj, Symbol, I, FileName)))
 909         break;
 910
 911       DictScope AS(W, "AuxFileRecord");
 912
 913       StringRef Name(FileName, Symbol.getNumberOfAuxSymbols() *
 914                                    Obj->getSymbolTableEntrySize());
 915       W.printString("FileName", Name.rtrim(StringRef("\0", 1)));
 916       break;
 917     } else if (Symbol.isSectionDefinition()) {
 918       const coff_aux_section_definition *Aux;
 919       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 920         break;
 921
 922       int32_t AuxNumber = Aux->getNumber(Symbol.isBigObj());
 923
 924       DictScope AS(W, "AuxSectionDef");
 925       W.printNumber("Length", Aux->Length);
 926       W.printNumber("RelocationCount", Aux->NumberOfRelocations);
 927       W.printNumber("LineNumberCount", Aux->NumberOfLinenumbers);
 928       W.printHex("Checksum", Aux->CheckSum);
 929       W.printNumber("Number", AuxNumber);
 930       W.printEnum("Selection", Aux->Selection, makeArrayRef(ImageCOMDATSelect));
 931
 932       if (Section && Section->Characteristics & COFF::IMAGE_SCN_LNK_COMDAT
 933           && Aux->Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE) {
 934         const coff_section *Assoc;
 935         StringRef AssocName;
 936         std::error_code EC;
 937         if ((EC = Obj->getSection(AuxNumber, Assoc)) ||
 938             (EC = Obj->getSectionName(Assoc, AssocName))) {
 939           AssocName = "";
 940           error(EC);
 941         }
 942
 943         W.printNumber("AssocSection", AssocName, AuxNumber);
 944       }
 945     } else if (Symbol.isCLRToken()) {
 946       const coff_aux_clr_token *Aux;
 947       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 948         break;
 949
 950       ErrorOr<COFFSymbolRef> ReferredSym =
 951           Obj->getSymbol(Aux->SymbolTableIndex);
 952       StringRef ReferredName;
 953       std::error_code EC = ReferredSym.getError();
 954       if (EC || (EC = Obj->getSymbolName(*ReferredSym, ReferredName))) {
 955         ReferredName = "";
 956         error(EC);
 957       }
 958
 959       DictScope AS(W, "AuxCLRToken");
 960       W.printNumber("AuxType", Aux->AuxType);
 961       W.printNumber("Reserved", Aux->Reserved);
 962       W.printNumber("SymbolTableIndex", ReferredName, Aux->SymbolTableIndex);
 963
 964     } else {
 965       W.startLine() << "<unhandled auxiliary record>\n";
 966     }
 967   }
 968 }
 969
 970 void COFFDumper::printUnwindInfo() {
 971   ListScope D(W, "UnwindInformation");
 972   switch (Obj->getMachine()) {
 973   case COFF::IMAGE_FILE_MACHINE_AMD64: {
 974     Win64EH::Dumper Dumper(W);
 975     Win64EH::Dumper::SymbolResolver
 976     Resolver = [](const object::coff_section *Section, uint64_t Offset,
 977                   SymbolRef &Symbol, void *user_data) -> std::error_code {
 978       COFFDumper *Dumper = reinterpret_cast<COFFDumper *>(user_data);
 979       return Dumper->resolveSymbol(Section, Offset, Symbol);
 980     };
 981     Win64EH::Dumper::Context Ctx(*Obj, Resolver, this);
 982     Dumper.printData(Ctx);
 983     break;
 984   }
 985   case COFF::IMAGE_FILE_MACHINE_ARMNT: {
 986     ARM::WinEH::Decoder Decoder(W);
 987     Decoder.dumpProcedureData(*Obj);
 988     break;
 989   }
 990   default:
 991     W.printEnum("unsupported Image Machine", Obj->getMachine(),
 992                 makeArrayRef(ImageFileMachineType));
 993     break;
 994   }
 995 }
 996
 997 void COFFDumper::printImportedSymbols(
 998     iterator_range<imported_symbol_iterator> Range) {
 999   for (const ImportedSymbolRef &I : Range) {
1000     StringRef Sym;
1001     if (error(I.getSymbolName(Sym))) return;
1002     uint16_t Ordinal;
1003     if (error(I.getOrdinal(Ordinal))) return;
1004     W.printNumber("Symbol", Sym, Ordinal);
1005   }
1006 }
1007
1008 void COFFDumper::printDelayImportedSymbols(
1009     const DelayImportDirectoryEntryRef &I,
1010     iterator_range<imported_symbol_iterator> Range) {
1011   int Index = 0;
1012   for (const ImportedSymbolRef &S : Range) {
1013     DictScope Import(W, "Import");
1014     StringRef Sym;
1015     if (error(S.getSymbolName(Sym))) return;
1016     uint16_t Ordinal;
1017     if (error(S.getOrdinal(Ordinal))) return;
1018     W.printNumber("Symbol", Sym, Ordinal);
1019     uint64_t Addr;
1020     if (error(I.getImportAddress(Index++, Addr))) return;
1021     W.printHex("Address", Addr);
1022   }
1023 }
1024
1025 void COFFDumper::printCOFFImports() {
1026   // Regular imports
1027   for (const ImportDirectoryEntryRef &I : Obj->import_directories()) {
1028     DictScope Import(W, "Import");
1029     StringRef Name;
1030     if (error(I.getName(Name))) return;
1031     W.printString("Name", Name);
1032     uint32_t Addr;
1033     if (error(I.getImportLookupTableRVA(Addr))) return;
1034     W.printHex("ImportLookupTableRVA", Addr);
1035     if (error(I.getImportAddressTableRVA(Addr))) return;
1036     W.printHex("ImportAddressTableRVA", Addr);
1037     printImportedSymbols(I.imported_symbols());
1038   }
1039
1040   // Delay imports
1041   for (const DelayImportDirectoryEntryRef &I : Obj->delay_import_directories()) {
1042     DictScope Import(W, "DelayImport");
1043     StringRef Name;
1044     if (error(I.getName(Name))) return;
1045     W.printString("Name", Name);
1046     const delay_import_directory_table_entry *Table;
1047     if (error(I.getDelayImportTable(Table))) return;
1048     W.printHex("Attributes", Table->Attributes);
1049     W.printHex("ModuleHandle", Table->ModuleHandle);
1050     W.printHex("ImportAddressTable", Table->DelayImportAddressTable);
1051     W.printHex("ImportNameTable", Table->DelayImportNameTable);
1052     W.printHex("BoundDelayImportTable", Table->BoundDelayImportTable);
1053     W.printHex("UnloadDelayImportTable", Table->UnloadDelayImportTable);
1054     printDelayImportedSymbols(I, I.imported_symbols());
1055   }
1056 }
1057
1058 void COFFDumper::printCOFFDirectives() {
1059   for (const SectionRef &Section : Obj->sections()) {
1060     StringRef Contents;
1061     StringRef Name;
1062
1063     if (error(Section.getName(Name)))
1064       continue;
1065     if (Name != ".drectve")
1066       continue;
1067
1068     if (error(Section.getContents(Contents)))
1069       return;
1070
1071     W.printString("Directive(s)", Contents);
1072   }
1073 }