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 "ObjDumper.h"
  17
  18 #include "Error.h"
  19 #include "StreamWriter.h"
  20
  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/Casting.h"
  26 #include "llvm/Support/Compiler.h"
  27 #include "llvm/Support/Format.h"
  28 #include "llvm/Support/SourceMgr.h"
  29 #include "llvm/Support/Win64EH.h"
  30 #include "llvm/Support/raw_ostream.h"
  31 #include "llvm/Support/system_error.h"
  32
  33 #include <algorithm>
  34 #include <cstring>
  35 #include <time.h>
  36
  37 using namespace llvm;
  38 using namespace llvm::object;
  39 using namespace llvm::Win64EH;
  40
  41 namespace {
  42
  43 class COFFDumper : public ObjDumper {
  44 public:
  45   COFFDumper(const llvm::object::COFFObjectFile *Obj, StreamWriter& Writer)
  46     : ObjDumper(Writer)
  47     , Obj(Obj) {
  48     cacheRelocations();
  49   }
  50
  51   virtual void printFileHeaders() LLVM_OVERRIDE;
  52   virtual void printSections() LLVM_OVERRIDE;
  53   virtual void printRelocations() LLVM_OVERRIDE;
  54   virtual void printSymbols() LLVM_OVERRIDE;
  55   virtual void printDynamicSymbols() LLVM_OVERRIDE;
  56   virtual void printUnwindInfo() LLVM_OVERRIDE;
  57
  58 private:
  59   void printSymbol(symbol_iterator SymI);
  60
  61   void printRelocation(section_iterator SecI, relocation_iterator RelI);
  62
  63   void printX64UnwindInfo();
  64
  65   void printRuntimeFunction(
  66     const RuntimeFunction& RTF,
  67     uint64_t OffsetInSection,
  68     const std::vector<RelocationRef> &Rels);
  69
  70   void printUnwindInfo(
  71     const Win64EH::UnwindInfo& UI,
  72     uint64_t OffsetInSection,
  73     const std::vector<RelocationRef> &Rels);
  74
  75   void printUnwindCode(const Win64EH::UnwindInfo& UI, ArrayRef<UnwindCode> UCs);
  76
  77   void cacheRelocations();
  78
  79   error_code getSectionContents(
  80     const std::vector<RelocationRef> &Rels,
  81     uint64_t Offset,
  82     ArrayRef<uint8_t> &Contents,
  83     uint64_t &Addr);
  84
  85   error_code getSection(
  86     const std::vector<RelocationRef> &Rels,
  87     uint64_t Offset,
  88     const coff_section **Section,
  89     uint64_t *AddrPtr);
  90
  91   typedef DenseMap<const coff_section*, std::vector<RelocationRef> > RelocMapTy;
  92
  93   const llvm::object::COFFObjectFile *Obj;
  94   RelocMapTy RelocMap;
  95   std::vector<RelocationRef> EmptyRelocs;
  96 };
  97
  98 } // namespace
  99
 100
 101 namespace llvm {
 102
 103 error_code createCOFFDumper(const object::ObjectFile *Obj,
 104                             StreamWriter& Writer,
 105                             OwningPtr<ObjDumper> &Result) {
 106   const COFFObjectFile *COFFObj = dyn_cast<COFFObjectFile>(Obj);
 107   if (!COFFObj)
 108     return readobj_error::unsupported_obj_file_format;
 109
 110   Result.reset(new COFFDumper(COFFObj, Writer));
 111   return readobj_error::success;
 112 }
 113
 114 } // namespace llvm
 115
 116
 117 // Returns the name of the unwind code.
 118 static StringRef getUnwindCodeTypeName(uint8_t Code) {
 119   switch(Code) {
 120   default: llvm_unreachable("Invalid unwind code");
 121   case UOP_PushNonVol: return "PUSH_NONVOL";
 122   case UOP_AllocLarge: return "ALLOC_LARGE";
 123   case UOP_AllocSmall: return "ALLOC_SMALL";
 124   case UOP_SetFPReg: return "SET_FPREG";
 125   case UOP_SaveNonVol: return "SAVE_NONVOL";
 126   case UOP_SaveNonVolBig: return "SAVE_NONVOL_FAR";
 127   case UOP_SaveXMM128: return "SAVE_XMM128";
 128   case UOP_SaveXMM128Big: return "SAVE_XMM128_FAR";
 129   case UOP_PushMachFrame: return "PUSH_MACHFRAME";
 130   }
 131 }
 132
 133 // Returns the name of a referenced register.
 134 static StringRef getUnwindRegisterName(uint8_t Reg) {
 135   switch(Reg) {
 136   default: llvm_unreachable("Invalid register");
 137   case 0: return "RAX";
 138   case 1: return "RCX";
 139   case 2: return "RDX";
 140   case 3: return "RBX";
 141   case 4: return "RSP";
 142   case 5: return "RBP";
 143   case 6: return "RSI";
 144   case 7: return "RDI";
 145   case 8: return "R8";
 146   case 9: return "R9";
 147   case 10: return "R10";
 148   case 11: return "R11";
 149   case 12: return "R12";
 150   case 13: return "R13";
 151   case 14: return "R14";
 152   case 15: return "R15";
 153   }
 154 }
 155
 156 // Calculates the number of array slots required for the unwind code.
 157 static unsigned getNumUsedSlots(const UnwindCode &UnwindCode) {
 158   switch (UnwindCode.getUnwindOp()) {
 159   default: llvm_unreachable("Invalid unwind code");
 160   case UOP_PushNonVol:
 161   case UOP_AllocSmall:
 162   case UOP_SetFPReg:
 163   case UOP_PushMachFrame:
 164     return 1;
 165   case UOP_SaveNonVol:
 166   case UOP_SaveXMM128:
 167     return 2;
 168   case UOP_SaveNonVolBig:
 169   case UOP_SaveXMM128Big:
 170     return 3;
 171   case UOP_AllocLarge:
 172     return (UnwindCode.getOpInfo() == 0) ? 2 : 3;
 173   }
 174 }
 175
 176 // Given a symbol sym this functions returns the address and section of it.
 177 static error_code resolveSectionAndAddress(const COFFObjectFile *Obj,
 178                                            const SymbolRef &Sym,
 179                                            const coff_section *&ResolvedSection,
 180                                            uint64_t &ResolvedAddr) {
 181   if (error_code EC = Sym.getAddress(ResolvedAddr))
 182     return EC;
 183
 184   section_iterator iter(Obj->begin_sections());
 185   if (error_code EC = Sym.getSection(iter))
 186     return EC;
 187
 188   ResolvedSection = Obj->getCOFFSection(iter);
 189   return object_error::success;
 190 }
 191
 192 // Given a vector of relocations for a section and an offset into this section
 193 // the function returns the symbol used for the relocation at the offset.
 194 static error_code resolveSymbol(const std::vector<RelocationRef> &Rels,
 195                                 uint64_t Offset, SymbolRef &Sym) {
 196   for (std::vector<RelocationRef>::const_iterator RelI = Rels.begin(),
 197                                                   RelE = Rels.end();
 198                                                   RelI != RelE; ++RelI) {
 199     uint64_t Ofs;
 200     if (error_code EC = RelI->getOffset(Ofs))
 201       return EC;
 202
 203     if (Ofs == Offset) {
 204       Sym = *RelI->getSymbol();
 205       return readobj_error::success;
 206     }
 207   }
 208
 209   return readobj_error::unknown_symbol;
 210 }
 211
 212 // Given a vector of relocations for a section and an offset into this section
 213 // the function returns the name of the symbol used for the relocation at the
 214 // offset.
 215 static error_code resolveSymbolName(const std::vector<RelocationRef> &Rels,
 216                                     uint64_t Offset, StringRef &Name) {
 217   SymbolRef Sym;
 218   if (error_code EC = resolveSymbol(Rels, Offset, Sym)) return EC;
 219   if (error_code EC = Sym.getName(Name)) return EC;
 220   return object_error::success;
 221 }
 222
 223 static const EnumEntry<COFF::MachineTypes> ImageFileMachineType[] = {
 224   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_UNKNOWN  ),
 225   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AM33     ),
 226   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AMD64    ),
 227   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARM      ),
 228   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARMV7    ),
 229   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_EBC      ),
 230   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_I386     ),
 231   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_IA64     ),
 232   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_M32R     ),
 233   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPS16   ),
 234   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU  ),
 235   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU16),
 236   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPC  ),
 237   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPCFP),
 238   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_R4000    ),
 239   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3      ),
 240   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3DSP   ),
 241   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH4      ),
 242   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH5      ),
 243   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_THUMB    ),
 244   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_WCEMIPSV2)
 245 };
 246
 247 static const EnumEntry<COFF::Characteristics> ImageFileCharacteristics[] = {
 248   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_RELOCS_STRIPPED        ),
 249   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_EXECUTABLE_IMAGE       ),
 250   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LINE_NUMS_STRIPPED     ),
 251   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LOCAL_SYMS_STRIPPED    ),
 252   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_AGGRESSIVE_WS_TRIM     ),
 253   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LARGE_ADDRESS_AWARE    ),
 254   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_LO      ),
 255   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_32BIT_MACHINE          ),
 256   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DEBUG_STRIPPED         ),
 257   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP),
 258   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_NET_RUN_FROM_SWAP      ),
 259   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_SYSTEM                 ),
 260   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DLL                    ),
 261   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_UP_SYSTEM_ONLY         ),
 262   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_HI      )
 263 };
 264
 265 static const EnumEntry<COFF::WindowsSubsystem> PEWindowsSubsystem[] = {
 266   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_UNKNOWN                ),
 267   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_NATIVE                 ),
 268   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_GUI            ),
 269   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CUI            ),
 270   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_POSIX_CUI              ),
 271   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI         ),
 272   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_APPLICATION        ),
 273   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER),
 274   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER     ),
 275   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_ROM                ),
 276   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_XBOX                   ),
 277 };
 278
 279 static const EnumEntry<COFF::DLLCharacteristics> PEDLLCharacteristics[] = {
 280   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE         ),
 281   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY      ),
 282   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT            ),
 283   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION         ),
 284   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_SEH               ),
 285   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_BIND              ),
 286   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER           ),
 287   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE),
 288 };
 289
 290 static const EnumEntry<COFF::SectionCharacteristics>
 291 ImageSectionCharacteristics[] = {
 292   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_TYPE_NO_PAD           ),
 293   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_CODE              ),
 294   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_INITIALIZED_DATA  ),
 295   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_UNINITIALIZED_DATA),
 296   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_OTHER             ),
 297   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_INFO              ),
 298   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_REMOVE            ),
 299   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_COMDAT            ),
 300   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_GPREL                 ),
 301   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PURGEABLE         ),
 302   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_16BIT             ),
 303   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_LOCKED            ),
 304   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PRELOAD           ),
 305   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1BYTES          ),
 306   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2BYTES          ),
 307   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4BYTES          ),
 308   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8BYTES          ),
 309   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_16BYTES         ),
 310   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_32BYTES         ),
 311   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_64BYTES         ),
 312   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_128BYTES        ),
 313   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_256BYTES        ),
 314   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_512BYTES        ),
 315   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1024BYTES       ),
 316   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2048BYTES       ),
 317   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4096BYTES       ),
 318   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8192BYTES       ),
 319   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_NRELOC_OVFL       ),
 320   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_DISCARDABLE       ),
 321   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_CACHED        ),
 322   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_PAGED         ),
 323   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_SHARED            ),
 324   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_EXECUTE           ),
 325   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_READ              ),
 326   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_WRITE             )
 327 };
 328
 329 static const EnumEntry<COFF::SymbolBaseType> ImageSymType[] = {
 330   { "Null"  , COFF::IMAGE_SYM_TYPE_NULL   },
 331   { "Void"  , COFF::IMAGE_SYM_TYPE_VOID   },
 332   { "Char"  , COFF::IMAGE_SYM_TYPE_CHAR   },
 333   { "Short" , COFF::IMAGE_SYM_TYPE_SHORT  },
 334   { "Int"   , COFF::IMAGE_SYM_TYPE_INT    },
 335   { "Long"  , COFF::IMAGE_SYM_TYPE_LONG   },
 336   { "Float" , COFF::IMAGE_SYM_TYPE_FLOAT  },
 337   { "Double", COFF::IMAGE_SYM_TYPE_DOUBLE },
 338   { "Struct", COFF::IMAGE_SYM_TYPE_STRUCT },
 339   { "Union" , COFF::IMAGE_SYM_TYPE_UNION  },
 340   { "Enum"  , COFF::IMAGE_SYM_TYPE_ENUM   },
 341   { "MOE"   , COFF::IMAGE_SYM_TYPE_MOE    },
 342   { "Byte"  , COFF::IMAGE_SYM_TYPE_BYTE   },
 343   { "Word"  , COFF::IMAGE_SYM_TYPE_WORD   },
 344   { "UInt"  , COFF::IMAGE_SYM_TYPE_UINT   },
 345   { "DWord" , COFF::IMAGE_SYM_TYPE_DWORD  }
 346 };
 347
 348 static const EnumEntry<COFF::SymbolComplexType> ImageSymDType[] = {
 349   { "Null"    , COFF::IMAGE_SYM_DTYPE_NULL     },
 350   { "Pointer" , COFF::IMAGE_SYM_DTYPE_POINTER  },
 351   { "Function", COFF::IMAGE_SYM_DTYPE_FUNCTION },
 352   { "Array"   , COFF::IMAGE_SYM_DTYPE_ARRAY    }
 353 };
 354
 355 static const EnumEntry<COFF::SymbolStorageClass> ImageSymClass[] = {
 356   { "EndOfFunction"  , COFF::IMAGE_SYM_CLASS_END_OF_FUNCTION  },
 357   { "Null"           , COFF::IMAGE_SYM_CLASS_NULL             },
 358   { "Automatic"      , COFF::IMAGE_SYM_CLASS_AUTOMATIC        },
 359   { "External"       , COFF::IMAGE_SYM_CLASS_EXTERNAL         },
 360   { "Static"         , COFF::IMAGE_SYM_CLASS_STATIC           },
 361   { "Register"       , COFF::IMAGE_SYM_CLASS_REGISTER         },
 362   { "ExternalDef"    , COFF::IMAGE_SYM_CLASS_EXTERNAL_DEF     },
 363   { "Label"          , COFF::IMAGE_SYM_CLASS_LABEL            },
 364   { "UndefinedLabel" , COFF::IMAGE_SYM_CLASS_UNDEFINED_LABEL  },
 365   { "MemberOfStruct" , COFF::IMAGE_SYM_CLASS_MEMBER_OF_STRUCT },
 366   { "Argument"       , COFF::IMAGE_SYM_CLASS_ARGUMENT         },
 367   { "StructTag"      , COFF::IMAGE_SYM_CLASS_STRUCT_TAG       },
 368   { "MemberOfUnion"  , COFF::IMAGE_SYM_CLASS_MEMBER_OF_UNION  },
 369   { "UnionTag"       , COFF::IMAGE_SYM_CLASS_UNION_TAG        },
 370   { "TypeDefinition" , COFF::IMAGE_SYM_CLASS_TYPE_DEFINITION  },
 371   { "UndefinedStatic", COFF::IMAGE_SYM_CLASS_UNDEFINED_STATIC },
 372   { "EnumTag"        , COFF::IMAGE_SYM_CLASS_ENUM_TAG         },
 373   { "MemberOfEnum"   , COFF::IMAGE_SYM_CLASS_MEMBER_OF_ENUM   },
 374   { "RegisterParam"  , COFF::IMAGE_SYM_CLASS_REGISTER_PARAM   },
 375   { "BitField"       , COFF::IMAGE_SYM_CLASS_BIT_FIELD        },
 376   { "Block"          , COFF::IMAGE_SYM_CLASS_BLOCK            },
 377   { "Function"       , COFF::IMAGE_SYM_CLASS_FUNCTION         },
 378   { "EndOfStruct"    , COFF::IMAGE_SYM_CLASS_END_OF_STRUCT    },
 379   { "File"           , COFF::IMAGE_SYM_CLASS_FILE             },
 380   { "Section"        , COFF::IMAGE_SYM_CLASS_SECTION          },
 381   { "WeakExternal"   , COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL    },
 382   { "CLRToken"       , COFF::IMAGE_SYM_CLASS_CLR_TOKEN        }
 383 };
 384
 385 static const EnumEntry<COFF::COMDATType> ImageCOMDATSelect[] = {
 386   { "NoDuplicates", COFF::IMAGE_COMDAT_SELECT_NODUPLICATES },
 387   { "Any"         , COFF::IMAGE_COMDAT_SELECT_ANY          },
 388   { "SameSize"    , COFF::IMAGE_COMDAT_SELECT_SAME_SIZE    },
 389   { "ExactMatch"  , COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH  },
 390   { "Associative" , COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE  },
 391   { "Largest"     , COFF::IMAGE_COMDAT_SELECT_LARGEST      },
 392   { "Newest"      , COFF::IMAGE_COMDAT_SELECT_NEWEST       }
 393 };
 394
 395 static const EnumEntry<COFF::WeakExternalCharacteristics>
 396 WeakExternalCharacteristics[] = {
 397   { "NoLibrary", COFF::IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY },
 398   { "Library"  , COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY   },
 399   { "Alias"    , COFF::IMAGE_WEAK_EXTERN_SEARCH_ALIAS     }
 400 };
 401
 402 static const EnumEntry<unsigned> UnwindFlags[] = {
 403   { "ExceptionHandler", Win64EH::UNW_ExceptionHandler },
 404   { "TerminateHandler", Win64EH::UNW_TerminateHandler },
 405   { "ChainInfo"       , Win64EH::UNW_ChainInfo        }
 406 };
 407
 408 static const EnumEntry<unsigned> UnwindOpInfo[] = {
 409   { "RAX",  0 },
 410   { "RCX",  1 },
 411   { "RDX",  2 },
 412   { "RBX",  3 },
 413   { "RSP",  4 },
 414   { "RBP",  5 },
 415   { "RSI",  6 },
 416   { "RDI",  7 },
 417   { "R8",   8 },
 418   { "R9",   9 },
 419   { "R10", 10 },
 420   { "R11", 11 },
 421   { "R12", 12 },
 422   { "R13", 13 },
 423   { "R14", 14 },
 424   { "R15", 15 }
 425 };
 426
 427 // Some additional COFF structures not defined by llvm::object.
 428 namespace {
 429   struct coff_aux_function_definition {
 430     support::ulittle32_t TagIndex;
 431     support::ulittle32_t TotalSize;
 432     support::ulittle32_t PointerToLineNumber;
 433     support::ulittle32_t PointerToNextFunction;
 434     uint8_t Unused[2];
 435   };
 436
 437   struct coff_aux_weak_external_definition {
 438     support::ulittle32_t TagIndex;
 439     support::ulittle32_t Characteristics;
 440     uint8_t Unused[10];
 441   };
 442
 443   struct coff_aux_file_record {
 444     char FileName[18];
 445   };
 446
 447   struct coff_aux_clr_token {
 448     support::ulittle8_t AuxType;
 449     support::ulittle8_t Reserved;
 450     support::ulittle32_t SymbolTableIndex;
 451     uint8_t Unused[12];
 452   };
 453 } // namespace
 454
 455 static uint64_t getOffsetOfLSDA(const Win64EH::UnwindInfo& UI) {
 456   return static_cast<const char*>(UI.getLanguageSpecificData())
 457          - reinterpret_cast<const char*>(&UI);
 458 }
 459
 460 static uint32_t getLargeSlotValue(ArrayRef<UnwindCode> UCs) {
 461   if (UCs.size() < 3)
 462     return 0;
 463
 464   return UCs[1].FrameOffset + (static_cast<uint32_t>(UCs[2].FrameOffset) << 16);
 465 }
 466
 467 template<typename T>
 468 static error_code getSymbolAuxData(const COFFObjectFile *Obj,
 469                                    const coff_symbol *Symbol, const T* &Aux) {
 470   ArrayRef<uint8_t> AuxData = Obj->getSymbolAuxData(Symbol);
 471   Aux = reinterpret_cast<const T*>(AuxData.data());
 472   return readobj_error::success;
 473 }
 474
 475 static std::string formatSymbol(const std::vector<RelocationRef> &Rels,
 476                                 uint64_t Offset, uint32_t Disp) {
 477   std::string Buffer;
 478   raw_string_ostream Str(Buffer);
 479
 480   StringRef Sym;
 481   if (resolveSymbolName(Rels, Offset, Sym)) {
 482     Str << format(" (0x%" PRIX64 ")", Offset);
 483     return Str.str();
 484   }
 485
 486   Str << Sym;
 487   if (Disp > 0) {
 488     Str << format(" +0x%X (0x%" PRIX64 ")", Disp, Offset);
 489   } else {
 490     Str << format(" (0x%" PRIX64 ")", Offset);
 491   }
 492
 493   return Str.str();
 494 }
 495
 496 // Given a vector of relocations for a section and an offset into this section
 497 // the function resolves the symbol used for the relocation at the offset and
 498 // returns the section content and the address inside the content pointed to
 499 // by the symbol.
 500 error_code COFFDumper::getSectionContents(
 501     const std::vector<RelocationRef> &Rels, uint64_t Offset,
 502     ArrayRef<uint8_t> &Contents, uint64_t &Addr) {
 503
 504   SymbolRef Sym;
 505   const coff_section *Section;
 506
 507   if (error_code EC = resolveSymbol(Rels, Offset, Sym))
 508     return EC;
 509   if (error_code EC = resolveSectionAndAddress(Obj, Sym, Section, Addr))
 510     return EC;
 511   if (error_code EC = Obj->getSectionContents(Section, Contents))
 512     return EC;
 513
 514   return object_error::success;
 515 }
 516
 517 error_code COFFDumper::getSection(
 518     const std::vector<RelocationRef> &Rels, uint64_t Offset,
 519     const coff_section **SectionPtr, uint64_t *AddrPtr) {
 520
 521   SymbolRef Sym;
 522   if (error_code EC = resolveSymbol(Rels, Offset, Sym))
 523     return EC;
 524
 525   const coff_section *Section;
 526   uint64_t Addr;
 527   if (error_code EC = resolveSectionAndAddress(Obj, Sym, Section, Addr))
 528     return EC;
 529
 530   if (SectionPtr)
 531     *SectionPtr = Section;
 532   if (AddrPtr)
 533     *AddrPtr = Addr;
 534
 535   return object_error::success;
 536 }
 537
 538 void COFFDumper::cacheRelocations() {
 539   error_code EC;
 540   for (section_iterator SecI = Obj->begin_sections(),
 541                         SecE = Obj->end_sections();
 542                         SecI != SecE; SecI.increment(EC)) {
 543     if (error(EC))
 544       break;
 545
 546     const coff_section *Section = Obj->getCOFFSection(SecI);
 547
 548     for (relocation_iterator RelI = SecI->begin_relocations(),
 549                              RelE = SecI->end_relocations();
 550                              RelI != RelE; RelI.increment(EC)) {
 551       if (error(EC))
 552         break;
 553
 554       RelocMap[Section].push_back(*RelI);
 555     }
 556
 557     // Sort relocations by address.
 558     std::sort(RelocMap[Section].begin(), RelocMap[Section].end(),
 559               relocAddressLess);
 560   }
 561 }
 562
 563 void COFFDumper::printFileHeaders() {
 564   // Print COFF header
 565   const coff_file_header *COFFHeader = 0;
 566   if (error(Obj->getCOFFHeader(COFFHeader)))
 567     return;
 568
 569   time_t TDS = COFFHeader->TimeDateStamp;
 570   char FormattedTime[20] = { };
 571   strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS));
 572
 573   {
 574     DictScope D(W, "ImageFileHeader");
 575     W.printEnum  ("Machine", COFFHeader->Machine,
 576                     makeArrayRef(ImageFileMachineType));
 577     W.printNumber("SectionCount", COFFHeader->NumberOfSections);
 578     W.printHex   ("TimeDateStamp", FormattedTime, COFFHeader->TimeDateStamp);
 579     W.printHex   ("PointerToSymbolTable", COFFHeader->PointerToSymbolTable);
 580     W.printNumber("SymbolCount", COFFHeader->NumberOfSymbols);
 581     W.printNumber("OptionalHeaderSize", COFFHeader->SizeOfOptionalHeader);
 582     W.printFlags ("Characteristics", COFFHeader->Characteristics,
 583                     makeArrayRef(ImageFileCharacteristics));
 584   }
 585
 586   // Print PE header. This header does not exist if this is an object file and
 587   // not an executable.
 588   const pe32_header *PEHeader = 0;
 589   if (error(Obj->getPE32Header(PEHeader)))
 590     return;
 591
 592   if (PEHeader) {
 593     DictScope D(W, "ImageOptionalHeader");
 594     W.printNumber("MajorLinkerVersion", PEHeader->MajorLinkerVersion);
 595     W.printNumber("MinorLinkerVersion", PEHeader->MinorLinkerVersion);
 596     W.printNumber("SizeOfCode", PEHeader->SizeOfCode);
 597     W.printNumber("SizeOfInitializedData", PEHeader->SizeOfInitializedData);
 598     W.printNumber("SizeOfUninitializedData", PEHeader->SizeOfUninitializedData);
 599     W.printHex   ("AddressOfEntryPoint", PEHeader->AddressOfEntryPoint);
 600     W.printHex   ("BaseOfCode", PEHeader->BaseOfCode);
 601     W.printHex   ("BaseOfData", PEHeader->BaseOfData);
 602     W.printHex   ("ImageBase", PEHeader->ImageBase);
 603     W.printNumber("SectionAlignment", PEHeader->SectionAlignment);
 604     W.printNumber("FileAlignment", PEHeader->FileAlignment);
 605     W.printNumber("MajorOperatingSystemVersion",
 606                   PEHeader->MajorOperatingSystemVersion);
 607     W.printNumber("MinorOperatingSystemVersion",
 608                   PEHeader->MinorOperatingSystemVersion);
 609     W.printNumber("MajorImageVersion", PEHeader->MajorImageVersion);
 610     W.printNumber("MinorImageVersion", PEHeader->MinorImageVersion);
 611     W.printNumber("MajorSubsystemVersion", PEHeader->MajorSubsystemVersion);
 612     W.printNumber("MinorSubsystemVersion", PEHeader->MinorSubsystemVersion);
 613     W.printNumber("SizeOfImage", PEHeader->SizeOfImage);
 614     W.printNumber("SizeOfHeaders", PEHeader->SizeOfHeaders);
 615     W.printEnum  ("Subsystem", PEHeader->Subsystem,
 616                     makeArrayRef(PEWindowsSubsystem));
 617     W.printFlags ("Subsystem", PEHeader->DLLCharacteristics,
 618                     makeArrayRef(PEDLLCharacteristics));
 619     W.printNumber("SizeOfStackReserve", PEHeader->SizeOfStackReserve);
 620     W.printNumber("SizeOfStackCommit", PEHeader->SizeOfStackCommit);
 621     W.printNumber("SizeOfHeapReserve", PEHeader->SizeOfHeapReserve);
 622     W.printNumber("SizeOfHeapCommit", PEHeader->SizeOfHeapCommit);
 623     W.printNumber("NumberOfRvaAndSize", PEHeader->NumberOfRvaAndSize);
 624   }
 625 }
 626
 627 void COFFDumper::printSections() {
 628   error_code EC;
 629
 630   ListScope SectionsD(W, "Sections");
 631   int SectionNumber = 0;
 632   for (section_iterator SecI = Obj->begin_sections(),
 633                         SecE = Obj->end_sections();
 634                         SecI != SecE; SecI.increment(EC)) {
 635     if (error(EC))
 636       break;
 637
 638     ++SectionNumber;
 639     const coff_section *Section = Obj->getCOFFSection(SecI);
 640
 641     StringRef Name;
 642     if (error(SecI->getName(Name)))
 643         Name = "";
 644
 645     DictScope D(W, "Section");
 646     W.printNumber("Number", SectionNumber);
 647     W.printBinary("Name", Name, Section->Name);
 648     W.printHex   ("VirtualSize", Section->VirtualSize);
 649     W.printHex   ("VirtualAddress", Section->VirtualAddress);
 650     W.printNumber("RawDataSize", Section->SizeOfRawData);
 651     W.printHex   ("PointerToRawData", Section->PointerToRawData);
 652     W.printHex   ("PointerToRelocations", Section->PointerToRelocations);
 653     W.printHex   ("PointerToLineNumbers", Section->PointerToLinenumbers);
 654     W.printNumber("RelocationCount", Section->NumberOfRelocations);
 655     W.printNumber("LineNumberCount", Section->NumberOfLinenumbers);
 656     W.printFlags ("Characteristics", Section->Characteristics,
 657                     makeArrayRef(ImageSectionCharacteristics),
 658                     COFF::SectionCharacteristics(0x00F00000));
 659
 660     if (opts::SectionRelocations) {
 661       ListScope D(W, "Relocations");
 662       for (relocation_iterator RelI = SecI->begin_relocations(),
 663                                RelE = SecI->end_relocations();
 664                                RelI != RelE; RelI.increment(EC)) {
 665         if (error(EC)) break;
 666
 667         printRelocation(SecI, RelI);
 668       }
 669     }
 670
 671     if (opts::SectionSymbols) {
 672       ListScope D(W, "Symbols");
 673       for (symbol_iterator SymI = Obj->begin_symbols(),
 674                            SymE = Obj->end_symbols();
 675                            SymI != SymE; SymI.increment(EC)) {
 676         if (error(EC)) break;
 677
 678         bool Contained = false;
 679         if (SecI->containsSymbol(*SymI, Contained) || !Contained)
 680           continue;
 681
 682         printSymbol(SymI);
 683       }
 684     }
 685
 686     if (opts::SectionData) {
 687       StringRef Data;
 688       if (error(SecI->getContents(Data))) break;
 689
 690       W.printBinaryBlock("SectionData", Data);
 691     }
 692   }
 693 }
 694
 695 void COFFDumper::printRelocations() {
 696   ListScope D(W, "Relocations");
 697
 698   error_code EC;
 699   int SectionNumber = 0;
 700   for (section_iterator SecI = Obj->begin_sections(),
 701                         SecE = Obj->end_sections();
 702                         SecI != SecE; SecI.increment(EC)) {
 703     ++SectionNumber;
 704     if (error(EC))
 705       break;
 706
 707     StringRef Name;
 708     if (error(SecI->getName(Name)))
 709       continue;
 710
 711     bool PrintedGroup = false;
 712     for (relocation_iterator RelI = SecI->begin_relocations(),
 713                              RelE = SecI->end_relocations();
 714                              RelI != RelE; RelI.increment(EC)) {
 715       if (error(EC)) break;
 716
 717       if (!PrintedGroup) {
 718         W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
 719         W.indent();
 720         PrintedGroup = true;
 721       }
 722
 723       printRelocation(SecI, RelI);
 724     }
 725
 726     if (PrintedGroup) {
 727       W.unindent();
 728       W.startLine() << "}\n";
 729     }
 730   }
 731 }
 732
 733 void COFFDumper::printRelocation(section_iterator SecI,
 734                                  relocation_iterator RelI) {
 735   uint64_t Offset;
 736   uint64_t RelocType;
 737   SmallString<32> RelocName;
 738   StringRef SymbolName;
 739   StringRef Contents;
 740   if (error(RelI->getOffset(Offset))) return;
 741   if (error(RelI->getType(RelocType))) return;
 742   if (error(RelI->getTypeName(RelocName))) return;
 743   symbol_iterator Symbol = RelI->getSymbol();
 744   if (error(Symbol->getName(SymbolName))) return;
 745   if (error(SecI->getContents(Contents))) return;
 746
 747   if (opts::ExpandRelocs) {
 748     DictScope Group(W, "Relocation");
 749     W.printHex("Offset", Offset);
 750     W.printNumber("Type", RelocName, RelocType);
 751     W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-");
 752   } else {
 753     raw_ostream& OS = W.startLine();
 754     OS << W.hex(Offset)
 755        << " " << RelocName
 756        << " " << (SymbolName.size() > 0 ? SymbolName : "-")
 757        << "\n";
 758   }
 759 }
 760
 761 void COFFDumper::printSymbols() {
 762   ListScope Group(W, "Symbols");
 763
 764   error_code EC;
 765   for (symbol_iterator SymI = Obj->begin_symbols(),
 766                        SymE = Obj->end_symbols();
 767                        SymI != SymE; SymI.increment(EC)) {
 768     if (error(EC)) break;
 769
 770     printSymbol(SymI);
 771   }
 772 }
 773
 774 void COFFDumper::printDynamicSymbols() {
 775   ListScope Group(W, "DynamicSymbols");
 776 }
 777
 778 void COFFDumper::printSymbol(symbol_iterator SymI) {
 779   DictScope D(W, "Symbol");
 780
 781   const coff_symbol *Symbol = Obj->getCOFFSymbol(SymI);
 782   const coff_section *Section;
 783   if (error_code EC = Obj->getSection(Symbol->SectionNumber, Section)) {
 784     W.startLine() << "Invalid section number: " << EC.message() << "\n";
 785     W.flush();
 786     return;
 787   }
 788
 789   StringRef SymbolName;
 790   if (Obj->getSymbolName(Symbol, SymbolName))
 791     SymbolName = "";
 792
 793   StringRef SectionName = "";
 794   if (Section)
 795     Obj->getSectionName(Section, SectionName);
 796
 797   W.printString("Name", SymbolName);
 798   W.printNumber("Value", Symbol->Value);
 799   W.printNumber("Section", SectionName, Symbol->SectionNumber);
 800   W.printEnum  ("BaseType", Symbol->getBaseType(), makeArrayRef(ImageSymType));
 801   W.printEnum  ("ComplexType", Symbol->getComplexType(),
 802                                                    makeArrayRef(ImageSymDType));
 803   W.printEnum  ("StorageClass", Symbol->StorageClass,
 804                                                    makeArrayRef(ImageSymClass));
 805   W.printNumber("AuxSymbolCount", Symbol->NumberOfAuxSymbols);
 806
 807   for (unsigned I = 0; I < Symbol->NumberOfAuxSymbols; ++I) {
 808     if (Symbol->StorageClass     == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
 809         Symbol->getBaseType()    == COFF::IMAGE_SYM_TYPE_NULL &&
 810         Symbol->getComplexType() == COFF::IMAGE_SYM_DTYPE_FUNCTION &&
 811         Symbol->SectionNumber > 0) {
 812       const coff_aux_function_definition *Aux;
 813       if (error(getSymbolAuxData(Obj, Symbol + I, Aux)))
 814         break;
 815
 816       DictScope AS(W, "AuxFunctionDef");
 817       W.printNumber("TagIndex", Aux->TagIndex);
 818       W.printNumber("TotalSize", Aux->TotalSize);
 819       W.printHex("PointerToLineNumber", Aux->PointerToLineNumber);
 820       W.printHex("PointerToNextFunction", Aux->PointerToNextFunction);
 821       W.printBinary("Unused", makeArrayRef(Aux->Unused));
 822
 823     } else if (
 824         Symbol->StorageClass   == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL ||
 825         (Symbol->StorageClass  == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
 826          Symbol->SectionNumber == 0 &&
 827          Symbol->Value         == 0)) {
 828       const coff_aux_weak_external_definition *Aux;
 829       if (error(getSymbolAuxData(Obj, Symbol + I, Aux)))
 830         break;
 831
 832       const coff_symbol *Linked;
 833       StringRef LinkedName;
 834       error_code EC;
 835       if ((EC = Obj->getSymbol(Aux->TagIndex, Linked)) ||
 836           (EC = Obj->getSymbolName(Linked, LinkedName))) {
 837         LinkedName = "";
 838         error(EC);
 839       }
 840
 841       DictScope AS(W, "AuxWeakExternal");
 842       W.printNumber("Linked", LinkedName, Aux->TagIndex);
 843       W.printEnum  ("Search", Aux->Characteristics,
 844                     makeArrayRef(WeakExternalCharacteristics));
 845       W.printBinary("Unused", Aux->Unused);
 846
 847     } else if (Symbol->StorageClass == COFF::IMAGE_SYM_CLASS_FILE) {
 848       const coff_aux_file_record *Aux;
 849       if (error(getSymbolAuxData(Obj, Symbol + I, Aux)))
 850         break;
 851
 852       DictScope AS(W, "AuxFileRecord");
 853       W.printString("FileName", StringRef(Aux->FileName));
 854
 855     } else if (Symbol->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC ||
 856                (Symbol->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
 857                 Symbol->SectionNumber != COFF::IMAGE_SYM_UNDEFINED)) {
 858       const coff_aux_section_definition *Aux;
 859       if (error(getSymbolAuxData(Obj, Symbol + I, Aux)))
 860         break;
 861
 862       DictScope AS(W, "AuxSectionDef");
 863       W.printNumber("Length", Aux->Length);
 864       W.printNumber("RelocationCount", Aux->NumberOfRelocations);
 865       W.printNumber("LineNumberCount", Aux->NumberOfLinenumbers);
 866       W.printHex("Checksum", Aux->CheckSum);
 867       W.printNumber("Number", Aux->Number);
 868       W.printEnum("Selection", Aux->Selection, makeArrayRef(ImageCOMDATSelect));
 869       W.printBinary("Unused", makeArrayRef(Aux->Unused));
 870
 871       if (Section && Section->Characteristics & COFF::IMAGE_SCN_LNK_COMDAT
 872           && Aux->Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE) {
 873         const coff_section *Assoc;
 874         StringRef AssocName;
 875         error_code EC;
 876         if ((EC = Obj->getSection(Aux->Number, Assoc)) ||
 877             (EC = Obj->getSectionName(Assoc, AssocName))) {
 878           AssocName = "";
 879           error(EC);
 880         }
 881
 882         W.printNumber("AssocSection", AssocName, Aux->Number);
 883       }
 884     } else if (Symbol->StorageClass == COFF::IMAGE_SYM_CLASS_CLR_TOKEN) {
 885       const coff_aux_clr_token *Aux;
 886       if (error(getSymbolAuxData(Obj, Symbol + I, Aux)))
 887         break;
 888
 889       DictScope AS(W, "AuxCLRToken");
 890       W.printNumber("AuxType", Aux->AuxType);
 891       W.printNumber("Reserved", Aux->Reserved);
 892       W.printNumber("SymbolTableIndex", Aux->SymbolTableIndex);
 893       W.printBinary("Unused", Aux->Unused);
 894
 895     } else {
 896       W.startLine() << "<unhandled auxiliary record>\n";
 897     }
 898   }
 899 }
 900
 901 void COFFDumper::printUnwindInfo() {
 902   const coff_file_header *Header;
 903   if (error(Obj->getCOFFHeader(Header)))
 904     return;
 905
 906   ListScope D(W, "UnwindInformation");
 907   if (Header->Machine != COFF::IMAGE_FILE_MACHINE_AMD64) {
 908     W.startLine() << "Unsupported image machine type "
 909               "(currently only AMD64 is supported).\n";
 910     return;
 911   }
 912
 913   printX64UnwindInfo();
 914 }
 915
 916 void COFFDumper::printX64UnwindInfo() {
 917   error_code EC;
 918   for (section_iterator SecI = Obj->begin_sections(),
 919                         SecE = Obj->end_sections();
 920                         SecI != SecE; SecI.increment(EC)) {
 921     if (error(EC)) break;
 922
 923     StringRef Name;
 924     if (error(SecI->getName(Name)))
 925       continue;
 926     if (Name != ".pdata" && !Name.startswith(".pdata$"))
 927       continue;
 928
 929     const coff_section *PData = Obj->getCOFFSection(SecI);
 930
 931     ArrayRef<uint8_t> Contents;
 932     if (error(Obj->getSectionContents(PData, Contents)) ||
 933         Contents.empty())
 934       continue;
 935
 936     ArrayRef<RuntimeFunction> RFs(
 937       reinterpret_cast<const RuntimeFunction *>(Contents.data()),
 938       Contents.size() / sizeof(RuntimeFunction));
 939
 940     for (const RuntimeFunction *I = RFs.begin(), *E = RFs.end(); I < E; ++I) {
 941       const uint64_t OffsetInSection = std::distance(RFs.begin(), I)
 942                                      * sizeof(RuntimeFunction);
 943
 944       printRuntimeFunction(*I, OffsetInSection, RelocMap[PData]);
 945     }
 946   }
 947 }
 948
 949 void COFFDumper::printRuntimeFunction(
 950     const RuntimeFunction& RTF,
 951     uint64_t OffsetInSection,
 952     const std::vector<RelocationRef> &Rels) {
 953
 954   DictScope D(W, "RuntimeFunction");
 955   W.printString("StartAddress",
 956                 formatSymbol(Rels, OffsetInSection + 0, RTF.StartAddress));
 957   W.printString("EndAddress",
 958                 formatSymbol(Rels, OffsetInSection + 4, RTF.EndAddress));
 959   W.printString("UnwindInfoAddress",
 960                 formatSymbol(Rels, OffsetInSection + 8, RTF.UnwindInfoOffset));
 961
 962   const coff_section* XData = 0;
 963   uint64_t UnwindInfoOffset = 0;
 964   if (error(getSection(Rels, OffsetInSection + 8, &XData, &UnwindInfoOffset)))
 965     return;
 966
 967   ArrayRef<uint8_t> XContents;
 968   if (error(Obj->getSectionContents(XData, XContents)) || XContents.empty())
 969     return;
 970
 971   UnwindInfoOffset += RTF.UnwindInfoOffset;
 972   if (UnwindInfoOffset > XContents.size())
 973     return;
 974
 975   const Win64EH::UnwindInfo *UI =
 976     reinterpret_cast<const Win64EH::UnwindInfo *>(
 977       XContents.data() + UnwindInfoOffset);
 978
 979   printUnwindInfo(*UI, UnwindInfoOffset, RelocMap[XData]);
 980 }
 981
 982 void COFFDumper::printUnwindInfo(
 983     const Win64EH::UnwindInfo& UI,
 984     uint64_t OffsetInSection,
 985     const std::vector<RelocationRef> &Rels) {
 986   DictScope D(W, "UnwindInfo");
 987   W.printNumber("Version", UI.getVersion());
 988   W.printFlags("Flags", UI.getFlags(), makeArrayRef(UnwindFlags));
 989   W.printNumber("PrologSize", UI.PrologSize);
 990   if (UI.getFrameRegister() != 0) {
 991     W.printEnum("FrameRegister", UI.getFrameRegister(),
 992                 makeArrayRef(UnwindOpInfo));
 993     W.printHex("FrameOffset", UI.getFrameOffset());
 994   } else {
 995     W.printString("FrameRegister", StringRef("-"));
 996     W.printString("FrameOffset", StringRef("-"));
 997   }
 998
 999   W.printNumber("UnwindCodeCount", UI.NumCodes);
1000   {
1001     ListScope CodesD(W, "UnwindCodes");
1002     ArrayRef<UnwindCode> UCs(&UI.UnwindCodes[0], UI.NumCodes);
1003     for (const UnwindCode *I = UCs.begin(), *E = UCs.end(); I < E; ++I) {
1004       unsigned UsedSlots = getNumUsedSlots(*I);
1005       if (UsedSlots > UCs.size()) {
1006         errs() << "Corrupt unwind data";
1007         return;
1008       }
1009       printUnwindCode(UI, ArrayRef<UnwindCode>(I, E));
1010       I += UsedSlots - 1;
1011     }
1012   }
1013
1014   uint64_t LSDAOffset = OffsetInSection + getOffsetOfLSDA(UI);
1015   if (UI.getFlags() & (UNW_ExceptionHandler | UNW_TerminateHandler)) {
1016     W.printString("Handler", formatSymbol(Rels, LSDAOffset,
1017                                         UI.getLanguageSpecificHandlerOffset()));
1018   } else if (UI.getFlags() & UNW_ChainInfo) {
1019     const RuntimeFunction *Chained = UI.getChainedFunctionEntry();
1020     if (Chained) {
1021       DictScope D(W, "Chained");
1022       W.printString("StartAddress", formatSymbol(Rels, LSDAOffset + 0,
1023                                                         Chained->StartAddress));
1024       W.printString("EndAddress", formatSymbol(Rels, LSDAOffset + 4,
1025                                                           Chained->EndAddress));
1026       W.printString("UnwindInfoAddress", formatSymbol(Rels, LSDAOffset + 8,
1027                                                     Chained->UnwindInfoOffset));
1028     }
1029   }
1030 }
1031
1032 // Prints one unwind code. Because an unwind code can occupy up to 3 slots in
1033 // the unwind codes array, this function requires that the correct number of
1034 // slots is provided.
1035 void COFFDumper::printUnwindCode(const Win64EH::UnwindInfo& UI,
1036                                  ArrayRef<UnwindCode> UCs) {
1037   assert(UCs.size() >= getNumUsedSlots(UCs[0]));
1038
1039   W.startLine() << format("0x%02X: ", unsigned(UCs[0].u.CodeOffset))
1040                 << getUnwindCodeTypeName(UCs[0].getUnwindOp());
1041
1042   uint32_t AllocSize = 0;
1043
1044   switch (UCs[0].getUnwindOp()) {
1045   case UOP_PushNonVol:
1046     outs() << " reg=" << getUnwindRegisterName(UCs[0].getOpInfo());
1047     break;
1048
1049   case UOP_AllocLarge:
1050     if (UCs[0].getOpInfo() == 0) {
1051       AllocSize = UCs[1].FrameOffset * 8;
1052     } else {
1053       AllocSize = getLargeSlotValue(UCs);
1054     }
1055     outs() << " size=" << AllocSize;
1056     break;
1057   case UOP_AllocSmall:
1058     outs() << " size=" << ((UCs[0].getOpInfo() + 1) * 8);
1059     break;
1060   case UOP_SetFPReg:
1061     if (UI.getFrameRegister() == 0) {
1062       outs() << " reg=<invalid>";
1063     } else {
1064       outs() << " reg=" << getUnwindRegisterName(UI.getFrameRegister())
1065              << format(", offset=0x%X", UI.getFrameOffset() * 16);
1066     }
1067     break;
1068   case UOP_SaveNonVol:
1069     outs() << " reg=" << getUnwindRegisterName(UCs[0].getOpInfo())
1070            << format(", offset=0x%X", UCs[1].FrameOffset * 8);
1071     break;
1072   case UOP_SaveNonVolBig:
1073     outs() << " reg=" << getUnwindRegisterName(UCs[0].getOpInfo())
1074            << format(", offset=0x%X", getLargeSlotValue(UCs));
1075     break;
1076   case UOP_SaveXMM128:
1077     outs() << " reg=XMM" << static_cast<uint32_t>(UCs[0].getOpInfo())
1078            << format(", offset=0x%X", UCs[1].FrameOffset * 16);
1079     break;
1080   case UOP_SaveXMM128Big:
1081     outs() << " reg=XMM" << static_cast<uint32_t>(UCs[0].getOpInfo())
1082            << format(", offset=0x%X", getLargeSlotValue(UCs));
1083     break;
1084   case UOP_PushMachFrame:
1085     outs() << " errcode=" << (UCs[0].getOpInfo() == 0 ? "no" : "yes");
1086     break;
1087   }
1088
1089   outs() << "\n";
1090 }