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