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