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   void printCOFFBaseReloc() override;
  61
  62 private:
  63   void printSymbol(const SymbolRef &Sym);
  64   void printRelocation(const SectionRef &Section, const RelocationRef &Reloc);
  65   void printDataDirectory(uint32_t Index, const std::string &FieldName);
  66
  67   void printDOSHeader(const dos_header *DH);
  68   template <class PEHeader> void printPEHeader(const PEHeader *Hdr);
  69   void printBaseOfDataField(const pe32_header *Hdr);
  70   void printBaseOfDataField(const pe32plus_header *Hdr);
  71
  72   void printCodeViewLineTables(const SectionRef &Section);
  73
  74   void printCodeViewSymbolsSubsection(StringRef Subsection,
  75                                       const SectionRef &Section,
  76                                       uint32_t Offset);
  77
  78   void cacheRelocations();
  79
  80   std::error_code resolveSymbol(const coff_section *Section, uint64_t Offset,
  81                                 SymbolRef &Sym);
  82   std::error_code resolveSymbolName(const coff_section *Section,
  83                                     uint64_t Offset, StringRef &Name);
  84   void printImportedSymbols(iterator_range<imported_symbol_iterator> Range);
  85   void printDelayImportedSymbols(
  86       const DelayImportDirectoryEntryRef &I,
  87       iterator_range<imported_symbol_iterator> Range);
  88
  89   typedef DenseMap<const coff_section*, std::vector<RelocationRef> > RelocMapTy;
  90
  91   const llvm::object::COFFObjectFile *Obj;
  92   RelocMapTy RelocMap;
  93   StringRef CVFileIndexToStringOffsetTable;
  94   StringRef CVStringTable;
  95 };
  96
  97 } // namespace
  98
  99
 100 namespace llvm {
 101
 102 std::error_code createCOFFDumper(const object::ObjectFile *Obj,
 103                                  StreamWriter &Writer,
 104                                  std::unique_ptr<ObjDumper> &Result) {
 105   const COFFObjectFile *COFFObj = dyn_cast<COFFObjectFile>(Obj);
 106   if (!COFFObj)
 107     return readobj_error::unsupported_obj_file_format;
 108
 109   Result.reset(new COFFDumper(COFFObj, Writer));
 110   return readobj_error::success;
 111 }
 112
 113 } // namespace llvm
 114
 115 // Given a a section and an offset into this section the function returns the
 116 // symbol used for the relocation at the offset.
 117 std::error_code COFFDumper::resolveSymbol(const coff_section *Section,
 118                                           uint64_t Offset, SymbolRef &Sym) {
 119   const auto &Relocations = RelocMap[Section];
 120   for (const auto &Relocation : Relocations) {
 121     uint64_t RelocationOffset;
 122     if (std::error_code EC = Relocation.getOffset(RelocationOffset))
 123       return EC;
 124
 125     if (RelocationOffset == Offset) {
 126       Sym = *Relocation.getSymbol();
 127       return readobj_error::success;
 128     }
 129   }
 130   return readobj_error::unknown_symbol;
 131 }
 132
 133 // Given a section and an offset into this section the function returns the name
 134 // of the symbol used for the relocation at the offset.
 135 std::error_code COFFDumper::resolveSymbolName(const coff_section *Section,
 136                                               uint64_t Offset,
 137                                               StringRef &Name) {
 138   SymbolRef Symbol;
 139   if (std::error_code EC = resolveSymbol(Section, Offset, Symbol))
 140     return EC;
 141   if (std::error_code EC = Symbol.getName(Name))
 142     return EC;
 143   return object_error::success;
 144 }
 145
 146 static const EnumEntry<COFF::MachineTypes> ImageFileMachineType[] = {
 147   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_UNKNOWN  ),
 148   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AM33     ),
 149   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AMD64    ),
 150   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARM      ),
 151   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARMNT    ),
 152   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_EBC      ),
 153   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_I386     ),
 154   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_IA64     ),
 155   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_M32R     ),
 156   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPS16   ),
 157   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU  ),
 158   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU16),
 159   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPC  ),
 160   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPCFP),
 161   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_R4000    ),
 162   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3      ),
 163   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3DSP   ),
 164   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH4      ),
 165   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH5      ),
 166   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_THUMB    ),
 167   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_WCEMIPSV2)
 168 };
 169
 170 static const EnumEntry<COFF::Characteristics> ImageFileCharacteristics[] = {
 171   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_RELOCS_STRIPPED        ),
 172   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_EXECUTABLE_IMAGE       ),
 173   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LINE_NUMS_STRIPPED     ),
 174   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LOCAL_SYMS_STRIPPED    ),
 175   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_AGGRESSIVE_WS_TRIM     ),
 176   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LARGE_ADDRESS_AWARE    ),
 177   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_LO      ),
 178   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_32BIT_MACHINE          ),
 179   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DEBUG_STRIPPED         ),
 180   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP),
 181   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_NET_RUN_FROM_SWAP      ),
 182   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_SYSTEM                 ),
 183   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DLL                    ),
 184   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_UP_SYSTEM_ONLY         ),
 185   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_HI      )
 186 };
 187
 188 static const EnumEntry<COFF::WindowsSubsystem> PEWindowsSubsystem[] = {
 189   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_UNKNOWN                ),
 190   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_NATIVE                 ),
 191   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_GUI            ),
 192   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CUI            ),
 193   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_POSIX_CUI              ),
 194   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI         ),
 195   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_APPLICATION        ),
 196   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER),
 197   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER     ),
 198   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_ROM                ),
 199   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_XBOX                   ),
 200 };
 201
 202 static const EnumEntry<COFF::DLLCharacteristics> PEDLLCharacteristics[] = {
 203   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA      ),
 204   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE         ),
 205   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY      ),
 206   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT            ),
 207   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION         ),
 208   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_SEH               ),
 209   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_BIND              ),
 210   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_APPCONTAINER         ),
 211   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER           ),
 212   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_GUARD_CF             ),
 213   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE),
 214 };
 215
 216 static const EnumEntry<COFF::SectionCharacteristics>
 217 ImageSectionCharacteristics[] = {
 218   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_TYPE_NO_PAD           ),
 219   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_CODE              ),
 220   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_INITIALIZED_DATA  ),
 221   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_UNINITIALIZED_DATA),
 222   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_OTHER             ),
 223   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_INFO              ),
 224   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_REMOVE            ),
 225   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_COMDAT            ),
 226   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_GPREL                 ),
 227   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PURGEABLE         ),
 228   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_16BIT             ),
 229   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_LOCKED            ),
 230   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PRELOAD           ),
 231   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1BYTES          ),
 232   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2BYTES          ),
 233   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4BYTES          ),
 234   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8BYTES          ),
 235   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_16BYTES         ),
 236   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_32BYTES         ),
 237   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_64BYTES         ),
 238   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_128BYTES        ),
 239   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_256BYTES        ),
 240   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_512BYTES        ),
 241   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1024BYTES       ),
 242   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2048BYTES       ),
 243   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4096BYTES       ),
 244   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8192BYTES       ),
 245   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_NRELOC_OVFL       ),
 246   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_DISCARDABLE       ),
 247   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_CACHED        ),
 248   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_PAGED         ),
 249   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_SHARED            ),
 250   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_EXECUTE           ),
 251   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_READ              ),
 252   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_WRITE             )
 253 };
 254
 255 static const EnumEntry<COFF::SymbolBaseType> ImageSymType[] = {
 256   { "Null"  , COFF::IMAGE_SYM_TYPE_NULL   },
 257   { "Void"  , COFF::IMAGE_SYM_TYPE_VOID   },
 258   { "Char"  , COFF::IMAGE_SYM_TYPE_CHAR   },
 259   { "Short" , COFF::IMAGE_SYM_TYPE_SHORT  },
 260   { "Int"   , COFF::IMAGE_SYM_TYPE_INT    },
 261   { "Long"  , COFF::IMAGE_SYM_TYPE_LONG   },
 262   { "Float" , COFF::IMAGE_SYM_TYPE_FLOAT  },
 263   { "Double", COFF::IMAGE_SYM_TYPE_DOUBLE },
 264   { "Struct", COFF::IMAGE_SYM_TYPE_STRUCT },
 265   { "Union" , COFF::IMAGE_SYM_TYPE_UNION  },
 266   { "Enum"  , COFF::IMAGE_SYM_TYPE_ENUM   },
 267   { "MOE"   , COFF::IMAGE_SYM_TYPE_MOE    },
 268   { "Byte"  , COFF::IMAGE_SYM_TYPE_BYTE   },
 269   { "Word"  , COFF::IMAGE_SYM_TYPE_WORD   },
 270   { "UInt"  , COFF::IMAGE_SYM_TYPE_UINT   },
 271   { "DWord" , COFF::IMAGE_SYM_TYPE_DWORD  }
 272 };
 273
 274 static const EnumEntry<COFF::SymbolComplexType> ImageSymDType[] = {
 275   { "Null"    , COFF::IMAGE_SYM_DTYPE_NULL     },
 276   { "Pointer" , COFF::IMAGE_SYM_DTYPE_POINTER  },
 277   { "Function", COFF::IMAGE_SYM_DTYPE_FUNCTION },
 278   { "Array"   , COFF::IMAGE_SYM_DTYPE_ARRAY    }
 279 };
 280
 281 static const EnumEntry<COFF::SymbolStorageClass> ImageSymClass[] = {
 282   { "EndOfFunction"  , COFF::IMAGE_SYM_CLASS_END_OF_FUNCTION  },
 283   { "Null"           , COFF::IMAGE_SYM_CLASS_NULL             },
 284   { "Automatic"      , COFF::IMAGE_SYM_CLASS_AUTOMATIC        },
 285   { "External"       , COFF::IMAGE_SYM_CLASS_EXTERNAL         },
 286   { "Static"         , COFF::IMAGE_SYM_CLASS_STATIC           },
 287   { "Register"       , COFF::IMAGE_SYM_CLASS_REGISTER         },
 288   { "ExternalDef"    , COFF::IMAGE_SYM_CLASS_EXTERNAL_DEF     },
 289   { "Label"          , COFF::IMAGE_SYM_CLASS_LABEL            },
 290   { "UndefinedLabel" , COFF::IMAGE_SYM_CLASS_UNDEFINED_LABEL  },
 291   { "MemberOfStruct" , COFF::IMAGE_SYM_CLASS_MEMBER_OF_STRUCT },
 292   { "Argument"       , COFF::IMAGE_SYM_CLASS_ARGUMENT         },
 293   { "StructTag"      , COFF::IMAGE_SYM_CLASS_STRUCT_TAG       },
 294   { "MemberOfUnion"  , COFF::IMAGE_SYM_CLASS_MEMBER_OF_UNION  },
 295   { "UnionTag"       , COFF::IMAGE_SYM_CLASS_UNION_TAG        },
 296   { "TypeDefinition" , COFF::IMAGE_SYM_CLASS_TYPE_DEFINITION  },
 297   { "UndefinedStatic", COFF::IMAGE_SYM_CLASS_UNDEFINED_STATIC },
 298   { "EnumTag"        , COFF::IMAGE_SYM_CLASS_ENUM_TAG         },
 299   { "MemberOfEnum"   , COFF::IMAGE_SYM_CLASS_MEMBER_OF_ENUM   },
 300   { "RegisterParam"  , COFF::IMAGE_SYM_CLASS_REGISTER_PARAM   },
 301   { "BitField"       , COFF::IMAGE_SYM_CLASS_BIT_FIELD        },
 302   { "Block"          , COFF::IMAGE_SYM_CLASS_BLOCK            },
 303   { "Function"       , COFF::IMAGE_SYM_CLASS_FUNCTION         },
 304   { "EndOfStruct"    , COFF::IMAGE_SYM_CLASS_END_OF_STRUCT    },
 305   { "File"           , COFF::IMAGE_SYM_CLASS_FILE             },
 306   { "Section"        , COFF::IMAGE_SYM_CLASS_SECTION          },
 307   { "WeakExternal"   , COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL    },
 308   { "CLRToken"       , COFF::IMAGE_SYM_CLASS_CLR_TOKEN        }
 309 };
 310
 311 static const EnumEntry<COFF::COMDATType> ImageCOMDATSelect[] = {
 312   { "NoDuplicates", COFF::IMAGE_COMDAT_SELECT_NODUPLICATES },
 313   { "Any"         , COFF::IMAGE_COMDAT_SELECT_ANY          },
 314   { "SameSize"    , COFF::IMAGE_COMDAT_SELECT_SAME_SIZE    },
 315   { "ExactMatch"  , COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH  },
 316   { "Associative" , COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE  },
 317   { "Largest"     , COFF::IMAGE_COMDAT_SELECT_LARGEST      },
 318   { "Newest"      , COFF::IMAGE_COMDAT_SELECT_NEWEST       }
 319 };
 320
 321 static const EnumEntry<COFF::WeakExternalCharacteristics>
 322 WeakExternalCharacteristics[] = {
 323   { "NoLibrary", COFF::IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY },
 324   { "Library"  , COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY   },
 325   { "Alias"    , COFF::IMAGE_WEAK_EXTERN_SEARCH_ALIAS     }
 326 };
 327
 328 template <typename T>
 329 static std::error_code getSymbolAuxData(const COFFObjectFile *Obj,
 330                                         COFFSymbolRef Symbol,
 331                                         uint8_t AuxSymbolIdx, const T *&Aux) {
 332   ArrayRef<uint8_t> AuxData = Obj->getSymbolAuxData(Symbol);
 333   AuxData = AuxData.slice(AuxSymbolIdx * Obj->getSymbolTableEntrySize());
 334   Aux = reinterpret_cast<const T*>(AuxData.data());
 335   return readobj_error::success;
 336 }
 337
 338 void COFFDumper::cacheRelocations() {
 339   for (const SectionRef &S : Obj->sections()) {
 340     const coff_section *Section = Obj->getCOFFSection(S);
 341
 342     for (const RelocationRef &Reloc : S.relocations())
 343       RelocMap[Section].push_back(Reloc);
 344
 345     // Sort relocations by address.
 346     std::sort(RelocMap[Section].begin(), RelocMap[Section].end(),
 347               relocAddressLess);
 348   }
 349 }
 350
 351 void COFFDumper::printDataDirectory(uint32_t Index, const std::string &FieldName) {
 352   const data_directory *Data;
 353   if (Obj->getDataDirectory(Index, Data))
 354     return;
 355   W.printHex(FieldName + "RVA", Data->RelativeVirtualAddress);
 356   W.printHex(FieldName + "Size", Data->Size);
 357 }
 358
 359 void COFFDumper::printFileHeaders() {
 360   time_t TDS = Obj->getTimeDateStamp();
 361   char FormattedTime[20] = { };
 362   strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS));
 363
 364   {
 365     DictScope D(W, "ImageFileHeader");
 366     W.printEnum  ("Machine", Obj->getMachine(),
 367                     makeArrayRef(ImageFileMachineType));
 368     W.printNumber("SectionCount", Obj->getNumberOfSections());
 369     W.printHex   ("TimeDateStamp", FormattedTime, Obj->getTimeDateStamp());
 370     W.printHex   ("PointerToSymbolTable", Obj->getPointerToSymbolTable());
 371     W.printNumber("SymbolCount", Obj->getNumberOfSymbols());
 372     W.printNumber("OptionalHeaderSize", Obj->getSizeOfOptionalHeader());
 373     W.printFlags ("Characteristics", Obj->getCharacteristics(),
 374                     makeArrayRef(ImageFileCharacteristics));
 375   }
 376
 377   // Print PE header. This header does not exist if this is an object file and
 378   // not an executable.
 379   const pe32_header *PEHeader = nullptr;
 380   if (error(Obj->getPE32Header(PEHeader)))
 381     return;
 382   if (PEHeader)
 383     printPEHeader<pe32_header>(PEHeader);
 384
 385   const pe32plus_header *PEPlusHeader = nullptr;
 386   if (error(Obj->getPE32PlusHeader(PEPlusHeader)))
 387     return;
 388   if (PEPlusHeader)
 389     printPEHeader<pe32plus_header>(PEPlusHeader);
 390
 391   if (const dos_header *DH = Obj->getDOSHeader())
 392     printDOSHeader(DH);
 393 }
 394
 395 void COFFDumper::printDOSHeader(const dos_header *DH) {
 396   DictScope D(W, "DOSHeader");
 397   W.printString("Magic", StringRef(DH->Magic, sizeof(DH->Magic)));
 398   W.printNumber("UsedBytesInTheLastPage", DH->UsedBytesInTheLastPage);
 399   W.printNumber("FileSizeInPages", DH->FileSizeInPages);
 400   W.printNumber("NumberOfRelocationItems", DH->NumberOfRelocationItems);
 401   W.printNumber("HeaderSizeInParagraphs", DH->HeaderSizeInParagraphs);
 402   W.printNumber("MinimumExtraParagraphs", DH->MinimumExtraParagraphs);
 403   W.printNumber("MaximumExtraParagraphs", DH->MaximumExtraParagraphs);
 404   W.printNumber("InitialRelativeSS", DH->InitialRelativeSS);
 405   W.printNumber("InitialSP", DH->InitialSP);
 406   W.printNumber("Checksum", DH->Checksum);
 407   W.printNumber("InitialIP", DH->InitialIP);
 408   W.printNumber("InitialRelativeCS", DH->InitialRelativeCS);
 409   W.printNumber("AddressOfRelocationTable", DH->AddressOfRelocationTable);
 410   W.printNumber("OverlayNumber", DH->OverlayNumber);
 411   W.printNumber("OEMid", DH->OEMid);
 412   W.printNumber("OEMinfo", DH->OEMinfo);
 413   W.printNumber("AddressOfNewExeHeader", DH->AddressOfNewExeHeader);
 414 }
 415
 416 template <class PEHeader>
 417 void COFFDumper::printPEHeader(const PEHeader *Hdr) {
 418   DictScope D(W, "ImageOptionalHeader");
 419   W.printNumber("MajorLinkerVersion", Hdr->MajorLinkerVersion);
 420   W.printNumber("MinorLinkerVersion", Hdr->MinorLinkerVersion);
 421   W.printNumber("SizeOfCode", Hdr->SizeOfCode);
 422   W.printNumber("SizeOfInitializedData", Hdr->SizeOfInitializedData);
 423   W.printNumber("SizeOfUninitializedData", Hdr->SizeOfUninitializedData);
 424   W.printHex   ("AddressOfEntryPoint", Hdr->AddressOfEntryPoint);
 425   W.printHex   ("BaseOfCode", Hdr->BaseOfCode);
 426   printBaseOfDataField(Hdr);
 427   W.printHex   ("ImageBase", Hdr->ImageBase);
 428   W.printNumber("SectionAlignment", Hdr->SectionAlignment);
 429   W.printNumber("FileAlignment", Hdr->FileAlignment);
 430   W.printNumber("MajorOperatingSystemVersion",
 431                 Hdr->MajorOperatingSystemVersion);
 432   W.printNumber("MinorOperatingSystemVersion",
 433                 Hdr->MinorOperatingSystemVersion);
 434   W.printNumber("MajorImageVersion", Hdr->MajorImageVersion);
 435   W.printNumber("MinorImageVersion", Hdr->MinorImageVersion);
 436   W.printNumber("MajorSubsystemVersion", Hdr->MajorSubsystemVersion);
 437   W.printNumber("MinorSubsystemVersion", Hdr->MinorSubsystemVersion);
 438   W.printNumber("SizeOfImage", Hdr->SizeOfImage);
 439   W.printNumber("SizeOfHeaders", Hdr->SizeOfHeaders);
 440   W.printEnum  ("Subsystem", Hdr->Subsystem, makeArrayRef(PEWindowsSubsystem));
 441   W.printFlags ("Characteristics", Hdr->DLLCharacteristics,
 442                 makeArrayRef(PEDLLCharacteristics));
 443   W.printNumber("SizeOfStackReserve", Hdr->SizeOfStackReserve);
 444   W.printNumber("SizeOfStackCommit", Hdr->SizeOfStackCommit);
 445   W.printNumber("SizeOfHeapReserve", Hdr->SizeOfHeapReserve);
 446   W.printNumber("SizeOfHeapCommit", Hdr->SizeOfHeapCommit);
 447   W.printNumber("NumberOfRvaAndSize", Hdr->NumberOfRvaAndSize);
 448
 449   if (Hdr->NumberOfRvaAndSize > 0) {
 450     DictScope D(W, "DataDirectory");
 451     static const char * const directory[] = {
 452       "ExportTable", "ImportTable", "ResourceTable", "ExceptionTable",
 453       "CertificateTable", "BaseRelocationTable", "Debug", "Architecture",
 454       "GlobalPtr", "TLSTable", "LoadConfigTable", "BoundImport", "IAT",
 455       "DelayImportDescriptor", "CLRRuntimeHeader", "Reserved"
 456     };
 457
 458     for (uint32_t i = 0; i < Hdr->NumberOfRvaAndSize; ++i) {
 459       printDataDirectory(i, directory[i]);
 460     }
 461   }
 462 }
 463
 464 void COFFDumper::printBaseOfDataField(const pe32_header *Hdr) {
 465   W.printHex("BaseOfData", Hdr->BaseOfData);
 466 }
 467
 468 void COFFDumper::printBaseOfDataField(const pe32plus_header *) {}
 469
 470 void COFFDumper::printCodeViewLineTables(const SectionRef &Section) {
 471   StringRef Data;
 472   if (error(Section.getContents(Data)))
 473     return;
 474
 475   SmallVector<StringRef, 10> FunctionNames;
 476   StringMap<StringRef> FunctionLineTables;
 477
 478   ListScope D(W, "CodeViewLineTables");
 479   {
 480     // FIXME: Add more offset correctness checks.
 481     DataExtractor DE(Data, true, 4);
 482     uint32_t Offset = 0,
 483              Magic = DE.getU32(&Offset);
 484     W.printHex("Magic", Magic);
 485     if (Magic != COFF::DEBUG_SECTION_MAGIC) {
 486       error(object_error::parse_failed);
 487       return;
 488     }
 489
 490     bool Finished = false;
 491     while (DE.isValidOffset(Offset) && !Finished) {
 492       // The section consists of a number of subsection in the following format:
 493       // |Type|PayloadSize|Payload...|
 494       uint32_t SubSectionType = DE.getU32(&Offset),
 495                PayloadSize = DE.getU32(&Offset);
 496       ListScope S(W, "Subsection");
 497       W.printHex("Type", SubSectionType);
 498       W.printHex("PayloadSize", PayloadSize);
 499       if (PayloadSize > Data.size() - Offset) {
 500         error(object_error::parse_failed);
 501         return;
 502       }
 503
 504       // Print the raw contents to simplify debugging if anything goes wrong
 505       // afterwards.
 506       StringRef Contents = Data.substr(Offset, PayloadSize);
 507       W.printBinaryBlock("Contents", Contents);
 508
 509       switch (SubSectionType) {
 510       case COFF::DEBUG_SYMBOL_SUBSECTION:
 511         printCodeViewSymbolsSubsection(Contents, Section, Offset);
 512         break;
 513       case COFF::DEBUG_LINE_TABLE_SUBSECTION: {
 514         // Holds a PC to file:line table.  Some data to parse this subsection is
 515         // stored in the other subsections, so just check sanity and store the
 516         // pointers for deferred processing.
 517
 518         if (PayloadSize < 12) {
 519           // There should be at least three words to store two function
 520           // relocations and size of the code.
 521           error(object_error::parse_failed);
 522           return;
 523         }
 524
 525         StringRef FunctionName;
 526         if (error(resolveSymbolName(Obj->getCOFFSection(Section), Offset,
 527                                     FunctionName)))
 528           return;
 529         W.printString("FunctionName", FunctionName);
 530         if (FunctionLineTables.count(FunctionName) != 0) {
 531           // Saw debug info for this function already?
 532           error(object_error::parse_failed);
 533           return;
 534         }
 535
 536         FunctionLineTables[FunctionName] = Contents;
 537         FunctionNames.push_back(FunctionName);
 538         break;
 539       }
 540       case COFF::DEBUG_STRING_TABLE_SUBSECTION:
 541         if (PayloadSize == 0 || CVStringTable.data() != nullptr ||
 542             Contents.back() != '\0') {
 543           // Empty or duplicate or non-null-terminated subsection.
 544           error(object_error::parse_failed);
 545           return;
 546         }
 547         CVStringTable = Contents;
 548         break;
 549       case COFF::DEBUG_INDEX_SUBSECTION:
 550         // Holds the translation table from file indices
 551         // to offsets in the string table.
 552
 553         if (PayloadSize == 0 ||
 554             CVFileIndexToStringOffsetTable.data() != nullptr) {
 555           // Empty or duplicate subsection.
 556           error(object_error::parse_failed);
 557           return;
 558         }
 559         CVFileIndexToStringOffsetTable = Contents;
 560         break;
 561       }
 562       Offset += PayloadSize;
 563
 564       // Align the reading pointer by 4.
 565       Offset += (-Offset) % 4;
 566     }
 567   }
 568
 569   // Dump the line tables now that we've read all the subsections and know all
 570   // the required information.
 571   for (unsigned I = 0, E = FunctionNames.size(); I != E; ++I) {
 572     StringRef Name = FunctionNames[I];
 573     ListScope S(W, "FunctionLineTable");
 574     W.printString("FunctionName", Name);
 575
 576     DataExtractor DE(FunctionLineTables[Name], true, 4);
 577     uint32_t Offset = 8;  // Skip relocations.
 578     uint32_t FunctionSize = DE.getU32(&Offset);
 579     W.printHex("CodeSize", FunctionSize);
 580     while (DE.isValidOffset(Offset)) {
 581       // For each range of lines with the same filename, we have a segment
 582       // in the line table.  The filename string is accessed using double
 583       // indirection to the string table subsection using the index subsection.
 584       uint32_t OffsetInIndex = DE.getU32(&Offset),
 585                SegmentLength   = DE.getU32(&Offset),
 586                FullSegmentSize = DE.getU32(&Offset);
 587       if (FullSegmentSize != 12 + 8 * SegmentLength) {
 588         error(object_error::parse_failed);
 589         return;
 590       }
 591
 592       uint32_t FilenameOffset;
 593       {
 594         DataExtractor SDE(CVFileIndexToStringOffsetTable, true, 4);
 595         uint32_t OffsetInSDE = OffsetInIndex;
 596         if (!SDE.isValidOffset(OffsetInSDE)) {
 597           error(object_error::parse_failed);
 598           return;
 599         }
 600         FilenameOffset = SDE.getU32(&OffsetInSDE);
 601       }
 602
 603       if (FilenameOffset == 0 || FilenameOffset + 1 >= CVStringTable.size() ||
 604           CVStringTable.data()[FilenameOffset - 1] != '\0') {
 605         // Each string in an F3 subsection should be preceded by a null
 606         // character.
 607         error(object_error::parse_failed);
 608         return;
 609       }
 610
 611       StringRef Filename(CVStringTable.data() + FilenameOffset);
 612       ListScope S(W, "FilenameSegment");
 613       W.printString("Filename", Filename);
 614       for (unsigned J = 0; J != SegmentLength && DE.isValidOffset(Offset);
 615            ++J) {
 616         // Then go the (PC, LineNumber) pairs.  The line number is stored in the
 617         // least significant 31 bits of the respective word in the table.
 618         uint32_t PC = DE.getU32(&Offset),
 619                  LineNumber = DE.getU32(&Offset) & 0x7fffffff;
 620         if (PC >= FunctionSize) {
 621           error(object_error::parse_failed);
 622           return;
 623         }
 624         char Buffer[32];
 625         format("+0x%X", PC).snprint(Buffer, 32);
 626         W.printNumber(Buffer, LineNumber);
 627       }
 628     }
 629   }
 630 }
 631
 632 void COFFDumper::printCodeViewSymbolsSubsection(StringRef Subsection,
 633                                                 const SectionRef &Section,
 634                                                 uint32_t OffsetInSection) {
 635   if (Subsection.size() == 0) {
 636     error(object_error::parse_failed);
 637     return;
 638   }
 639   DataExtractor DE(Subsection, true, 4);
 640   uint32_t Offset = 0;
 641
 642   // Function-level subsections have "procedure start" and "procedure end"
 643   // commands that should come in pairs and surround relevant info.
 644   bool InFunctionScope = false;
 645   while (DE.isValidOffset(Offset)) {
 646     // Read subsection segments one by one.
 647     uint16_t Size = DE.getU16(&Offset);
 648     // The section size includes the size of the type identifier.
 649     if (Size < 2 || !DE.isValidOffsetForDataOfSize(Offset, Size)) {
 650       error(object_error::parse_failed);
 651       return;
 652     }
 653     Size -= 2;
 654     uint16_t Type = DE.getU16(&Offset);
 655     switch (Type) {
 656     case COFF::DEBUG_SYMBOL_TYPE_PROC_START: {
 657       DictScope S(W, "ProcStart");
 658       if (InFunctionScope || Size < 36) {
 659         error(object_error::parse_failed);
 660         return;
 661       }
 662       InFunctionScope = true;
 663
 664       // We're currently interested in a limited subset of fields in this
 665       // segment, just ignore the rest of the fields for now.
 666       uint8_t Unused[12];
 667       DE.getU8(&Offset, Unused, 12);
 668       uint32_t CodeSize = DE.getU32(&Offset);
 669       DE.getU8(&Offset, Unused, 12);
 670       StringRef SectionName;
 671       if (error(resolveSymbolName(Obj->getCOFFSection(Section),
 672                                   OffsetInSection + Offset, SectionName)))
 673         return;
 674       Offset += 4;
 675       DE.getU8(&Offset, Unused, 3);
 676       StringRef DisplayName = DE.getCStr(&Offset);
 677       if (!DE.isValidOffset(Offset)) {
 678         error(object_error::parse_failed);
 679         return;
 680       }
 681       W.printString("DisplayName", DisplayName);
 682       W.printString("Section", SectionName);
 683       W.printHex("CodeSize", CodeSize);
 684
 685       break;
 686     }
 687     case COFF::DEBUG_SYMBOL_TYPE_PROC_END: {
 688       W.startLine() << "ProcEnd\n";
 689       if (!InFunctionScope || Size > 0) {
 690         error(object_error::parse_failed);
 691         return;
 692       }
 693       InFunctionScope = false;
 694       break;
 695     }
 696     default:
 697       Offset += Size;
 698       break;
 699     }
 700   }
 701
 702   if (InFunctionScope)
 703     error(object_error::parse_failed);
 704 }
 705
 706 void COFFDumper::printSections() {
 707   ListScope SectionsD(W, "Sections");
 708   int SectionNumber = 0;
 709   for (const SectionRef &Sec : Obj->sections()) {
 710     ++SectionNumber;
 711     const coff_section *Section = Obj->getCOFFSection(Sec);
 712
 713     StringRef Name;
 714     if (error(Sec.getName(Name)))
 715       Name = "";
 716
 717     DictScope D(W, "Section");
 718     W.printNumber("Number", SectionNumber);
 719     W.printBinary("Name", Name, Section->Name);
 720     W.printHex   ("VirtualSize", Section->VirtualSize);
 721     W.printHex   ("VirtualAddress", Section->VirtualAddress);
 722     W.printNumber("RawDataSize", Section->SizeOfRawData);
 723     W.printHex   ("PointerToRawData", Section->PointerToRawData);
 724     W.printHex   ("PointerToRelocations", Section->PointerToRelocations);
 725     W.printHex   ("PointerToLineNumbers", Section->PointerToLinenumbers);
 726     W.printNumber("RelocationCount", Section->NumberOfRelocations);
 727     W.printNumber("LineNumberCount", Section->NumberOfLinenumbers);
 728     W.printFlags ("Characteristics", Section->Characteristics,
 729                     makeArrayRef(ImageSectionCharacteristics),
 730                     COFF::SectionCharacteristics(0x00F00000));
 731
 732     if (opts::SectionRelocations) {
 733       ListScope D(W, "Relocations");
 734       for (const RelocationRef &Reloc : Sec.relocations())
 735         printRelocation(Sec, Reloc);
 736     }
 737
 738     if (opts::SectionSymbols) {
 739       ListScope D(W, "Symbols");
 740       for (const SymbolRef &Symbol : Obj->symbols()) {
 741         if (!Sec.containsSymbol(Symbol))
 742           continue;
 743
 744         printSymbol(Symbol);
 745       }
 746     }
 747
 748     if (Name == ".debug$S" && opts::CodeViewLineTables)
 749       printCodeViewLineTables(Sec);
 750
 751     if (opts::SectionData &&
 752         !(Section->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)) {
 753       StringRef Data;
 754       if (error(Sec.getContents(Data)))
 755         break;
 756
 757       W.printBinaryBlock("SectionData", Data);
 758     }
 759   }
 760 }
 761
 762 void COFFDumper::printRelocations() {
 763   ListScope D(W, "Relocations");
 764
 765   int SectionNumber = 0;
 766   for (const SectionRef &Section : Obj->sections()) {
 767     ++SectionNumber;
 768     StringRef Name;
 769     if (error(Section.getName(Name)))
 770       continue;
 771
 772     bool PrintedGroup = false;
 773     for (const RelocationRef &Reloc : Section.relocations()) {
 774       if (!PrintedGroup) {
 775         W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
 776         W.indent();
 777         PrintedGroup = true;
 778       }
 779
 780       printRelocation(Section, Reloc);
 781     }
 782
 783     if (PrintedGroup) {
 784       W.unindent();
 785       W.startLine() << "}\n";
 786     }
 787   }
 788 }
 789
 790 void COFFDumper::printRelocation(const SectionRef &Section,
 791                                  const RelocationRef &Reloc) {
 792   uint64_t Offset;
 793   uint64_t RelocType;
 794   SmallString<32> RelocName;
 795   StringRef SymbolName;
 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 (Symbol != Obj->symbol_end() && error(Symbol->getName(SymbolName)))
 804     return;
 805
 806   if (opts::ExpandRelocs) {
 807     DictScope Group(W, "Relocation");
 808     W.printHex("Offset", Offset);
 809     W.printNumber("Type", RelocName, RelocType);
 810     W.printString("Symbol", SymbolName.empty() ? "-" : SymbolName);
 811   } else {
 812     raw_ostream& OS = W.startLine();
 813     OS << W.hex(Offset)
 814        << " " << RelocName
 815        << " " << (SymbolName.empty() ? "-" : SymbolName)
 816        << "\n";
 817   }
 818 }
 819
 820 void COFFDumper::printSymbols() {
 821   ListScope Group(W, "Symbols");
 822
 823   for (const SymbolRef &Symbol : Obj->symbols())
 824     printSymbol(Symbol);
 825 }
 826
 827 void COFFDumper::printDynamicSymbols() { ListScope Group(W, "DynamicSymbols"); }
 828
 829 static ErrorOr<StringRef>
 830 getSectionName(const llvm::object::COFFObjectFile *Obj, int32_t SectionNumber,
 831                const coff_section *Section) {
 832   if (Section) {
 833     StringRef SectionName;
 834     if (std::error_code EC = Obj->getSectionName(Section, SectionName))
 835       return EC;
 836     return SectionName;
 837   }
 838   if (SectionNumber == llvm::COFF::IMAGE_SYM_DEBUG)
 839     return StringRef("IMAGE_SYM_DEBUG");
 840   if (SectionNumber == llvm::COFF::IMAGE_SYM_ABSOLUTE)
 841     return StringRef("IMAGE_SYM_ABSOLUTE");
 842   if (SectionNumber == llvm::COFF::IMAGE_SYM_UNDEFINED)
 843     return StringRef("IMAGE_SYM_UNDEFINED");
 844   return StringRef("");
 845 }
 846
 847 void COFFDumper::printSymbol(const SymbolRef &Sym) {
 848   DictScope D(W, "Symbol");
 849
 850   COFFSymbolRef Symbol = Obj->getCOFFSymbol(Sym);
 851   const coff_section *Section;
 852   if (std::error_code EC = Obj->getSection(Symbol.getSectionNumber(), Section)) {
 853     W.startLine() << "Invalid section number: " << EC.message() << "\n";
 854     W.flush();
 855     return;
 856   }
 857
 858   StringRef SymbolName;
 859   if (Obj->getSymbolName(Symbol, SymbolName))
 860     SymbolName = "";
 861
 862   StringRef SectionName = "";
 863   ErrorOr<StringRef> Res =
 864       getSectionName(Obj, Symbol.getSectionNumber(), Section);
 865   if (Res)
 866     SectionName = *Res;
 867
 868   W.printString("Name", SymbolName);
 869   W.printNumber("Value", Symbol.getValue());
 870   W.printNumber("Section", SectionName, Symbol.getSectionNumber());
 871   W.printEnum  ("BaseType", Symbol.getBaseType(), makeArrayRef(ImageSymType));
 872   W.printEnum  ("ComplexType", Symbol.getComplexType(),
 873                                                    makeArrayRef(ImageSymDType));
 874   W.printEnum  ("StorageClass", Symbol.getStorageClass(),
 875                                                    makeArrayRef(ImageSymClass));
 876   W.printNumber("AuxSymbolCount", Symbol.getNumberOfAuxSymbols());
 877
 878   for (uint8_t I = 0; I < Symbol.getNumberOfAuxSymbols(); ++I) {
 879     if (Symbol.isFunctionDefinition()) {
 880       const coff_aux_function_definition *Aux;
 881       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 882         break;
 883
 884       DictScope AS(W, "AuxFunctionDef");
 885       W.printNumber("TagIndex", Aux->TagIndex);
 886       W.printNumber("TotalSize", Aux->TotalSize);
 887       W.printHex("PointerToLineNumber", Aux->PointerToLinenumber);
 888       W.printHex("PointerToNextFunction", Aux->PointerToNextFunction);
 889
 890     } else if (Symbol.isAnyUndefined()) {
 891       const coff_aux_weak_external *Aux;
 892       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 893         break;
 894
 895       ErrorOr<COFFSymbolRef> Linked = Obj->getSymbol(Aux->TagIndex);
 896       StringRef LinkedName;
 897       std::error_code EC = Linked.getError();
 898       if (EC || (EC = Obj->getSymbolName(*Linked, LinkedName))) {
 899         LinkedName = "";
 900         error(EC);
 901       }
 902
 903       DictScope AS(W, "AuxWeakExternal");
 904       W.printNumber("Linked", LinkedName, Aux->TagIndex);
 905       W.printEnum  ("Search", Aux->Characteristics,
 906                     makeArrayRef(WeakExternalCharacteristics));
 907
 908     } else if (Symbol.isFileRecord()) {
 909       const char *FileName;
 910       if (error(getSymbolAuxData(Obj, Symbol, I, FileName)))
 911         break;
 912
 913       DictScope AS(W, "AuxFileRecord");
 914
 915       StringRef Name(FileName, Symbol.getNumberOfAuxSymbols() *
 916                                    Obj->getSymbolTableEntrySize());
 917       W.printString("FileName", Name.rtrim(StringRef("\0", 1)));
 918       break;
 919     } else if (Symbol.isSectionDefinition()) {
 920       const coff_aux_section_definition *Aux;
 921       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 922         break;
 923
 924       int32_t AuxNumber = Aux->getNumber(Symbol.isBigObj());
 925
 926       DictScope AS(W, "AuxSectionDef");
 927       W.printNumber("Length", Aux->Length);
 928       W.printNumber("RelocationCount", Aux->NumberOfRelocations);
 929       W.printNumber("LineNumberCount", Aux->NumberOfLinenumbers);
 930       W.printHex("Checksum", Aux->CheckSum);
 931       W.printNumber("Number", AuxNumber);
 932       W.printEnum("Selection", Aux->Selection, makeArrayRef(ImageCOMDATSelect));
 933
 934       if (Section && Section->Characteristics & COFF::IMAGE_SCN_LNK_COMDAT
 935           && Aux->Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE) {
 936         const coff_section *Assoc;
 937         StringRef AssocName = "";
 938         std::error_code EC = Obj->getSection(AuxNumber, Assoc);
 939         ErrorOr<StringRef> Res = getSectionName(Obj, AuxNumber, Assoc);
 940         if (Res)
 941           AssocName = *Res;
 942         if (!EC)
 943           EC = Res.getError();
 944         if (EC) {
 945           AssocName = "";
 946           error(EC);
 947         }
 948
 949         W.printNumber("AssocSection", AssocName, AuxNumber);
 950       }
 951     } else if (Symbol.isCLRToken()) {
 952       const coff_aux_clr_token *Aux;
 953       if (error(getSymbolAuxData(Obj, Symbol, I, Aux)))
 954         break;
 955
 956       ErrorOr<COFFSymbolRef> ReferredSym =
 957           Obj->getSymbol(Aux->SymbolTableIndex);
 958       StringRef ReferredName;
 959       std::error_code EC = ReferredSym.getError();
 960       if (EC || (EC = Obj->getSymbolName(*ReferredSym, ReferredName))) {
 961         ReferredName = "";
 962         error(EC);
 963       }
 964
 965       DictScope AS(W, "AuxCLRToken");
 966       W.printNumber("AuxType", Aux->AuxType);
 967       W.printNumber("Reserved", Aux->Reserved);
 968       W.printNumber("SymbolTableIndex", ReferredName, Aux->SymbolTableIndex);
 969
 970     } else {
 971       W.startLine() << "<unhandled auxiliary record>\n";
 972     }
 973   }
 974 }
 975
 976 void COFFDumper::printUnwindInfo() {
 977   ListScope D(W, "UnwindInformation");
 978   switch (Obj->getMachine()) {
 979   case COFF::IMAGE_FILE_MACHINE_AMD64: {
 980     Win64EH::Dumper Dumper(W);
 981     Win64EH::Dumper::SymbolResolver
 982     Resolver = [](const object::coff_section *Section, uint64_t Offset,
 983                   SymbolRef &Symbol, void *user_data) -> std::error_code {
 984       COFFDumper *Dumper = reinterpret_cast<COFFDumper *>(user_data);
 985       return Dumper->resolveSymbol(Section, Offset, Symbol);
 986     };
 987     Win64EH::Dumper::Context Ctx(*Obj, Resolver, this);
 988     Dumper.printData(Ctx);
 989     break;
 990   }
 991   case COFF::IMAGE_FILE_MACHINE_ARMNT: {
 992     ARM::WinEH::Decoder Decoder(W);
 993     Decoder.dumpProcedureData(*Obj);
 994     break;
 995   }
 996   default:
 997     W.printEnum("unsupported Image Machine", Obj->getMachine(),
 998                 makeArrayRef(ImageFileMachineType));
 999     break;
1000   }
1001 }
1002
1003 void COFFDumper::printImportedSymbols(
1004     iterator_range<imported_symbol_iterator> Range) {
1005   for (const ImportedSymbolRef &I : Range) {
1006     StringRef Sym;
1007     if (error(I.getSymbolName(Sym))) return;
1008     uint16_t Ordinal;
1009     if (error(I.getOrdinal(Ordinal))) return;
1010     W.printNumber("Symbol", Sym, Ordinal);
1011   }
1012 }
1013
1014 void COFFDumper::printDelayImportedSymbols(
1015     const DelayImportDirectoryEntryRef &I,
1016     iterator_range<imported_symbol_iterator> Range) {
1017   int Index = 0;
1018   for (const ImportedSymbolRef &S : Range) {
1019     DictScope Import(W, "Import");
1020     StringRef Sym;
1021     if (error(S.getSymbolName(Sym))) return;
1022     uint16_t Ordinal;
1023     if (error(S.getOrdinal(Ordinal))) return;
1024     W.printNumber("Symbol", Sym, Ordinal);
1025     uint64_t Addr;
1026     if (error(I.getImportAddress(Index++, Addr))) return;
1027     W.printHex("Address", Addr);
1028   }
1029 }
1030
1031 void COFFDumper::printCOFFImports() {
1032   // Regular imports
1033   for (const ImportDirectoryEntryRef &I : Obj->import_directories()) {
1034     DictScope Import(W, "Import");
1035     StringRef Name;
1036     if (error(I.getName(Name))) return;
1037     W.printString("Name", Name);
1038     uint32_t Addr;
1039     if (error(I.getImportLookupTableRVA(Addr))) return;
1040     W.printHex("ImportLookupTableRVA", Addr);
1041     if (error(I.getImportAddressTableRVA(Addr))) return;
1042     W.printHex("ImportAddressTableRVA", Addr);
1043     printImportedSymbols(I.imported_symbols());
1044   }
1045
1046   // Delay imports
1047   for (const DelayImportDirectoryEntryRef &I : Obj->delay_import_directories()) {
1048     DictScope Import(W, "DelayImport");
1049     StringRef Name;
1050     if (error(I.getName(Name))) return;
1051     W.printString("Name", Name);
1052     const delay_import_directory_table_entry *Table;
1053     if (error(I.getDelayImportTable(Table))) return;
1054     W.printHex("Attributes", Table->Attributes);
1055     W.printHex("ModuleHandle", Table->ModuleHandle);
1056     W.printHex("ImportAddressTable", Table->DelayImportAddressTable);
1057     W.printHex("ImportNameTable", Table->DelayImportNameTable);
1058     W.printHex("BoundDelayImportTable", Table->BoundDelayImportTable);
1059     W.printHex("UnloadDelayImportTable", Table->UnloadDelayImportTable);
1060     printDelayImportedSymbols(I, I.imported_symbols());
1061   }
1062 }
1063
1064 void COFFDumper::printCOFFDirectives() {
1065   for (const SectionRef &Section : Obj->sections()) {
1066     StringRef Contents;
1067     StringRef Name;
1068
1069     if (error(Section.getName(Name)))
1070       continue;
1071     if (Name != ".drectve")
1072       continue;
1073
1074     if (error(Section.getContents(Contents)))
1075       return;
1076
1077     W.printString("Directive(s)", Contents);
1078   }
1079 }
1080
1081 static StringRef getBaseRelocTypeName(uint8_t Type) {
1082   switch (Type) {
1083   case COFF::IMAGE_REL_BASED_ABSOLUTE: return "ABSOLUTE";
1084   case COFF::IMAGE_REL_BASED_HIGH: return "HIGH";
1085   case COFF::IMAGE_REL_BASED_LOW: return "LOW";
1086   case COFF::IMAGE_REL_BASED_HIGHLOW: return "HIGHLOW";
1087   case COFF::IMAGE_REL_BASED_HIGHADJ: return "HIGHADJ";
1088   case COFF::IMAGE_REL_BASED_DIR64: return "DIR64";
1089   default: return "unknown (" + std::to_string(Type) + ")";
1090   }
1091 }
1092
1093 void COFFDumper::printCOFFBaseReloc() {
1094   ListScope D(W, "BaseReloc");
1095   for (const BaseRelocRef &I : Obj->base_relocs()) {
1096     uint8_t Type;
1097     uint32_t RVA;
1098     if (error(I.getRVA(RVA)))
1099       continue;
1100     if (error(I.getType(Type)))
1101       continue;
1102     DictScope Import(W, "Entry");
1103     W.printString("Type", getBaseRelocTypeName(Type));
1104     W.printHex("Address", RVA);
1105   }
1106 }