tools/yaml2obj/yaml2obj.cpp

   1 //===- yaml2obj - Convert YAML to a binary object file --------------------===//
   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 // This program takes a YAML description of an object file and outputs the
  11 // binary equivalent.
  12 //
  13 // This is used for writing tests that require binary files.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #include "llvm/ADT/SmallString.h"
  18 #include "llvm/ADT/StringExtras.h"
  19 #include "llvm/ADT/StringMap.h"
  20 #include "llvm/ADT/StringSwitch.h"
  21 #include "llvm/Support/COFF.h"
  22 #include "llvm/Support/Casting.h"
  23 #include "llvm/Support/CommandLine.h"
  24 #include "llvm/Support/Endian.h"
  25 #include "llvm/Support/ManagedStatic.h"
  26 #include "llvm/Support/MemoryBuffer.h"
  27 #include "llvm/Support/PrettyStackTrace.h"
  28 #include "llvm/Support/Signals.h"
  29 #include "llvm/Support/SourceMgr.h"
  30 #include "llvm/Support/YAMLTraits.h"
  31 #include "llvm/Support/raw_ostream.h"
  32 #include "llvm/Support/system_error.h"
  33 #include <vector>
  34
  35 using namespace llvm;
  36
  37 static cl::opt<std::string>
  38   Input(cl::Positional, cl::desc("<input>"), cl::init("-"));
  39
  40 template<class T>
  41 typename llvm::enable_if_c<std::numeric_limits<T>::is_integer, bool>::type
  42 getAs(const llvm::yaml::ScalarNode *SN, T &Result) {
  43   SmallString<4> Storage;
  44   StringRef Value = SN->getValue(Storage);
  45   if (Value.getAsInteger(0, Result))
  46     return false;
  47   return true;
  48 }
  49
  50 // Given a container with begin and end with ::value_type of a character type.
  51 // Iterate through pairs of characters in the the set of [a-fA-F0-9] ignoring
  52 // all other characters.
  53 struct hex_pair_iterator {
  54   StringRef::const_iterator Current, End;
  55   typedef SmallVector<char, 2> value_type;
  56   value_type Pair;
  57   bool IsDone;
  58
  59   hex_pair_iterator(StringRef C)
  60     : Current(C.begin()), End(C.end()), IsDone(false) {
  61     // Initalize Pair.
  62     ++*this;
  63   }
  64
  65   // End iterator.
  66   hex_pair_iterator() : Current(), End(), IsDone(true) {}
  67
  68   value_type operator *() const {
  69     return Pair;
  70   }
  71
  72   hex_pair_iterator operator ++() {
  73     // We're at the end of the input.
  74     if (Current == End) {
  75       IsDone = true;
  76       return *this;
  77     }
  78     Pair = value_type();
  79     for (; Current != End && Pair.size() != 2; ++Current) {
  80       // Is a valid hex digit.
  81       if ((*Current >= '0' && *Current <= '9') ||
  82           (*Current >= 'a' && *Current <= 'f') ||
  83           (*Current >= 'A' && *Current <= 'F'))
  84         Pair.push_back(*Current);
  85     }
  86     // Hit the end without getting 2 hex digits. Pair is invalid.
  87     if (Pair.size() != 2)
  88       IsDone = true;
  89     return *this;
  90   }
  91
  92   bool operator ==(const hex_pair_iterator Other) {
  93     return (IsDone == Other.IsDone) ||
  94            (Current == Other.Current && End == Other.End);
  95   }
  96
  97   bool operator !=(const hex_pair_iterator Other) {
  98     return !(*this == Other);
  99   }
 100 };
 101
 102 template <class ContainerOut>
 103 static bool hexStringToByteArray(StringRef Str, ContainerOut &Out) {
 104   for (hex_pair_iterator I(Str), E; I != E; ++I) {
 105     typename hex_pair_iterator::value_type Pair = *I;
 106     typename ContainerOut::value_type Byte;
 107     if (StringRef(Pair.data(), 2).getAsInteger(16, Byte))
 108       return false;
 109     Out.push_back(Byte);
 110   }
 111   return true;
 112 }
 113
 114 // The structure of the yaml files is not an exact 1:1 match to COFF. In order
 115 // to use yaml::IO, we use these structures which are closer to the source.
 116 namespace COFFYAML {
 117   struct Section {
 118     COFF::SectionCharacteristics Characteristics;
 119     StringRef SectionData;
 120     std::vector<COFF::relocation> Relocations;
 121     StringRef Name;
 122   };
 123
 124   struct Symbol {
 125     COFF::SymbolBaseType SimpleType;
 126     uint8_t NumberOfAuxSymbols;
 127     StringRef Name;
 128     COFF::SymbolStorageClass StorageClass;
 129     StringRef AuxillaryData;
 130     COFF::SymbolComplexType ComplexType;
 131     uint32_t Value;
 132     uint16_t SectionNumber;
 133   };
 134
 135   struct Object {
 136     COFF::header HeaderData;
 137     std::vector<Section> Sections;
 138     std::vector<Symbol> Symbols;
 139   };
 140 }
 141
 142 /// This parses a yaml stream that represents a COFF object file.
 143 /// See docs/yaml2obj for the yaml scheema.
 144 struct COFFParser {
 145   COFFParser(COFFYAML::Object &Obj) : Obj(Obj) {
 146     std::memset(&Header, 0, sizeof(Header));
 147     // A COFF string table always starts with a 4 byte size field. Offsets into
 148     // it include this size, so allocate it now.
 149     StringTable.append(4, 0);
 150   }
 151
 152   void parseHeader() {
 153     Header.Machine = Obj.HeaderData.Machine;
 154     Header.Characteristics = Obj.HeaderData.Characteristics;
 155   }
 156
 157   bool parseSections() {
 158     for (std::vector<COFFYAML::Section>::iterator i = Obj.Sections.begin(),
 159            e = Obj.Sections.end(); i != e; ++i) {
 160       const COFFYAML::Section &YamlSection = *i;
 161       Section Sec;
 162       std::memset(&Sec.Header, 0, sizeof(Sec.Header));
 163
 164       // If the name is less than 8 bytes, store it in place, otherwise
 165       // store it in the string table.
 166       StringRef Name = YamlSection.Name;
 167       std::fill_n(Sec.Header.Name, unsigned(COFF::NameSize), 0);
 168       if (Name.size() <= COFF::NameSize) {
 169         std::copy(Name.begin(), Name.end(), Sec.Header.Name);
 170       } else {
 171         // Add string to the string table and format the index for output.
 172         unsigned Index = getStringIndex(Name);
 173         std::string str = utostr(Index);
 174         if (str.size() > 7) {
 175           errs() << "String table got too large";
 176           return false;
 177         }
 178         Sec.Header.Name[0] = '/';
 179         std::copy(str.begin(), str.end(), Sec.Header.Name + 1);
 180       }
 181
 182       Sec.Header.Characteristics = YamlSection.Characteristics;
 183
 184       StringRef Data = YamlSection.SectionData;
 185       if (!hexStringToByteArray(Data, Sec.Data)) {
 186         errs() << "SectionData must be a collection of pairs of hex bytes";
 187         return false;
 188       }
 189       Sections.push_back(Sec);
 190     }
 191     return true;
 192   }
 193
 194   bool parseSymbols() {
 195     for (std::vector<COFFYAML::Symbol>::iterator i = Obj.Symbols.begin(),
 196            e = Obj.Symbols.end(); i != e; ++i) {
 197       COFFYAML::Symbol YamlSymbol = *i;
 198       Symbol Sym;
 199       std::memset(&Sym.Header, 0, sizeof(Sym.Header));
 200
 201       // If the name is less than 8 bytes, store it in place, otherwise
 202       // store it in the string table.
 203       StringRef Name = YamlSymbol.Name;
 204       std::fill_n(Sym.Header.Name, unsigned(COFF::NameSize), 0);
 205       if (Name.size() <= COFF::NameSize) {
 206         std::copy(Name.begin(), Name.end(), Sym.Header.Name);
 207       } else {
 208         // Add string to the string table and format the index for output.
 209         unsigned Index = getStringIndex(Name);
 210         *reinterpret_cast<support::aligned_ulittle32_t*>(
 211             Sym.Header.Name + 4) = Index;
 212       }
 213
 214       Sym.Header.Value = YamlSymbol.Value;
 215       Sym.Header.Type |= YamlSymbol.SimpleType;
 216       Sym.Header.Type |= YamlSymbol.ComplexType << COFF::SCT_COMPLEX_TYPE_SHIFT;
 217       Sym.Header.StorageClass = YamlSymbol.StorageClass;
 218       Sym.Header.SectionNumber = YamlSymbol.SectionNumber;
 219
 220       StringRef Data = YamlSymbol.AuxillaryData;
 221       if (!hexStringToByteArray(Data, Sym.AuxSymbols)) {
 222         errs() << "AuxillaryData must be a collection of pairs of hex bytes";
 223         return false;
 224       }
 225       Symbols.push_back(Sym);
 226     }
 227     return true;
 228   }
 229
 230   bool parse() {
 231     parseHeader();
 232     if (!parseSections())
 233       return false;
 234     if (!parseSymbols())
 235       return false;
 236     return true;
 237   }
 238
 239   unsigned getStringIndex(StringRef Str) {
 240     StringMap<unsigned>::iterator i = StringTableMap.find(Str);
 241     if (i == StringTableMap.end()) {
 242       unsigned Index = StringTable.size();
 243       StringTable.append(Str.begin(), Str.end());
 244       StringTable.push_back(0);
 245       StringTableMap[Str] = Index;
 246       return Index;
 247     }
 248     return i->second;
 249   }
 250
 251   COFFYAML::Object &Obj;
 252   COFF::header Header;
 253
 254   struct Section {
 255     COFF::section Header;
 256     std::vector<uint8_t> Data;
 257     std::vector<COFF::relocation> Relocations;
 258   };
 259
 260   struct Symbol {
 261     COFF::symbol Header;
 262     std::vector<uint8_t> AuxSymbols;
 263   };
 264
 265   std::vector<Section> Sections;
 266   std::vector<Symbol> Symbols;
 267   StringMap<unsigned> StringTableMap;
 268   std::string StringTable;
 269 };
 270
 271 // Take a CP and assign addresses and sizes to everything. Returns false if the
 272 // layout is not valid to do.
 273 static bool layoutCOFF(COFFParser &CP) {
 274   uint32_t SectionTableStart = 0;
 275   uint32_t SectionTableSize  = 0;
 276
 277   // The section table starts immediately after the header, including the
 278   // optional header.
 279   SectionTableStart = sizeof(COFF::header) + CP.Header.SizeOfOptionalHeader;
 280   SectionTableSize = sizeof(COFF::section) * CP.Sections.size();
 281
 282   uint32_t CurrentSectionDataOffset = SectionTableStart + SectionTableSize;
 283
 284   // Assign each section data address consecutively.
 285   for (std::vector<COFFParser::Section>::iterator i = CP.Sections.begin(),
 286                                                   e = CP.Sections.end();
 287                                                   i != e; ++i) {
 288     if (!i->Data.empty()) {
 289       i->Header.SizeOfRawData = i->Data.size();
 290       i->Header.PointerToRawData = CurrentSectionDataOffset;
 291       CurrentSectionDataOffset += i->Header.SizeOfRawData;
 292       // TODO: Handle alignment.
 293     } else {
 294       i->Header.SizeOfRawData = 0;
 295       i->Header.PointerToRawData = 0;
 296     }
 297   }
 298
 299   uint32_t SymbolTableStart = CurrentSectionDataOffset;
 300
 301   // Calculate number of symbols.
 302   uint32_t NumberOfSymbols = 0;
 303   for (std::vector<COFFParser::Symbol>::iterator i = CP.Symbols.begin(),
 304                                                  e = CP.Symbols.end();
 305                                                  i != e; ++i) {
 306     if (i->AuxSymbols.size() % COFF::SymbolSize != 0) {
 307       errs() << "AuxillaryData size not a multiple of symbol size!\n";
 308       return false;
 309     }
 310     i->Header.NumberOfAuxSymbols = i->AuxSymbols.size() / COFF::SymbolSize;
 311     NumberOfSymbols += 1 + i->Header.NumberOfAuxSymbols;
 312   }
 313
 314   // Store all the allocated start addresses in the header.
 315   CP.Header.NumberOfSections = CP.Sections.size();
 316   CP.Header.NumberOfSymbols = NumberOfSymbols;
 317   CP.Header.PointerToSymbolTable = SymbolTableStart;
 318
 319   *reinterpret_cast<support::ulittle32_t *>(&CP.StringTable[0])
 320     = CP.StringTable.size();
 321
 322   return true;
 323 }
 324
 325 template <typename value_type>
 326 struct binary_le_impl {
 327   value_type Value;
 328   binary_le_impl(value_type V) : Value(V) {}
 329 };
 330
 331 template <typename value_type>
 332 raw_ostream &operator <<( raw_ostream &OS
 333                         , const binary_le_impl<value_type> &BLE) {
 334   char Buffer[sizeof(BLE.Value)];
 335   support::endian::write<value_type, support::little, support::unaligned>(
 336     Buffer, BLE.Value);
 337   OS.write(Buffer, sizeof(BLE.Value));
 338   return OS;
 339 }
 340
 341 template <typename value_type>
 342 binary_le_impl<value_type> binary_le(value_type V) {
 343   return binary_le_impl<value_type>(V);
 344 }
 345
 346 void writeCOFF(COFFParser &CP, raw_ostream &OS) {
 347   OS << binary_le(CP.Header.Machine)
 348      << binary_le(CP.Header.NumberOfSections)
 349      << binary_le(CP.Header.TimeDateStamp)
 350      << binary_le(CP.Header.PointerToSymbolTable)
 351      << binary_le(CP.Header.NumberOfSymbols)
 352      << binary_le(CP.Header.SizeOfOptionalHeader)
 353      << binary_le(CP.Header.Characteristics);
 354
 355   // Output section table.
 356   for (std::vector<COFFParser::Section>::const_iterator i = CP.Sections.begin(),
 357                                                         e = CP.Sections.end();
 358                                                         i != e; ++i) {
 359     OS.write(i->Header.Name, COFF::NameSize);
 360     OS << binary_le(i->Header.VirtualSize)
 361        << binary_le(i->Header.VirtualAddress)
 362        << binary_le(i->Header.SizeOfRawData)
 363        << binary_le(i->Header.PointerToRawData)
 364        << binary_le(i->Header.PointerToRelocations)
 365        << binary_le(i->Header.PointerToLineNumbers)
 366        << binary_le(i->Header.NumberOfRelocations)
 367        << binary_le(i->Header.NumberOfLineNumbers)
 368        << binary_le(i->Header.Characteristics);
 369   }
 370
 371   // Output section data.
 372   for (std::vector<COFFParser::Section>::const_iterator i = CP.Sections.begin(),
 373                                                         e = CP.Sections.end();
 374                                                         i != e; ++i) {
 375     if (!i->Data.empty())
 376       OS.write(reinterpret_cast<const char*>(&i->Data[0]), i->Data.size());
 377   }
 378
 379   // Output symbol table.
 380
 381   for (std::vector<COFFParser::Symbol>::const_iterator i = CP.Symbols.begin(),
 382                                                        e = CP.Symbols.end();
 383                                                        i != e; ++i) {
 384     OS.write(i->Header.Name, COFF::NameSize);
 385     OS << binary_le(i->Header.Value)
 386        << binary_le(i->Header.SectionNumber)
 387        << binary_le(i->Header.Type)
 388        << binary_le(i->Header.StorageClass)
 389        << binary_le(i->Header.NumberOfAuxSymbols);
 390     if (!i->AuxSymbols.empty())
 391       OS.write( reinterpret_cast<const char*>(&i->AuxSymbols[0])
 392               , i->AuxSymbols.size());
 393   }
 394
 395   // Output string table.
 396   OS.write(&CP.StringTable[0], CP.StringTable.size());
 397 }
 398
 399 LLVM_YAML_IS_SEQUENCE_VECTOR(COFF::relocation)
 400 LLVM_YAML_IS_SEQUENCE_VECTOR(COFFYAML::Section)
 401 LLVM_YAML_IS_SEQUENCE_VECTOR(COFFYAML::Symbol)
 402
 403 namespace llvm {
 404
 405 namespace COFF {
 406   Characteristics operator|(Characteristics a, Characteristics b) {
 407     uint32_t Ret = static_cast<uint32_t>(a) | static_cast<uint32_t>(b);
 408     return static_cast<Characteristics>(Ret);
 409   }
 410
 411   SectionCharacteristics
 412   operator|(SectionCharacteristics a, SectionCharacteristics b) {
 413     uint32_t Ret = static_cast<uint32_t>(a) | static_cast<uint32_t>(b);
 414     return static_cast<SectionCharacteristics>(Ret);
 415   }
 416 }
 417
 418 namespace yaml {
 419
 420 #define BCase(X) IO.bitSetCase(Value, #X, COFF::X);
 421
 422 template <>
 423 struct ScalarBitSetTraits<COFF::SectionCharacteristics> {
 424   static void bitset(IO &IO, COFF::SectionCharacteristics &Value) {
 425     BCase(IMAGE_SCN_TYPE_NO_PAD);
 426     BCase(IMAGE_SCN_CNT_CODE);
 427     BCase(IMAGE_SCN_CNT_INITIALIZED_DATA);
 428     BCase(IMAGE_SCN_CNT_UNINITIALIZED_DATA);
 429     BCase(IMAGE_SCN_LNK_OTHER);
 430     BCase(IMAGE_SCN_LNK_INFO);
 431     BCase(IMAGE_SCN_LNK_REMOVE);
 432     BCase(IMAGE_SCN_LNK_COMDAT);
 433     BCase(IMAGE_SCN_GPREL);
 434     BCase(IMAGE_SCN_MEM_PURGEABLE);
 435     BCase(IMAGE_SCN_MEM_16BIT);
 436     BCase(IMAGE_SCN_MEM_LOCKED);
 437     BCase(IMAGE_SCN_MEM_PRELOAD);
 438     BCase(IMAGE_SCN_ALIGN_1BYTES);
 439     BCase(IMAGE_SCN_ALIGN_2BYTES);
 440     BCase(IMAGE_SCN_ALIGN_4BYTES);
 441     BCase(IMAGE_SCN_ALIGN_8BYTES);
 442     BCase(IMAGE_SCN_ALIGN_16BYTES);
 443     BCase(IMAGE_SCN_ALIGN_32BYTES);
 444     BCase(IMAGE_SCN_ALIGN_64BYTES);
 445     BCase(IMAGE_SCN_ALIGN_128BYTES);
 446     BCase(IMAGE_SCN_ALIGN_256BYTES);
 447     BCase(IMAGE_SCN_ALIGN_512BYTES);
 448     BCase(IMAGE_SCN_ALIGN_1024BYTES);
 449     BCase(IMAGE_SCN_ALIGN_2048BYTES);
 450     BCase(IMAGE_SCN_ALIGN_4096BYTES);
 451     BCase(IMAGE_SCN_ALIGN_8192BYTES);
 452     BCase(IMAGE_SCN_LNK_NRELOC_OVFL);
 453     BCase(IMAGE_SCN_MEM_DISCARDABLE);
 454     BCase(IMAGE_SCN_MEM_NOT_CACHED);
 455     BCase(IMAGE_SCN_MEM_NOT_PAGED);
 456     BCase(IMAGE_SCN_MEM_SHARED);
 457     BCase(IMAGE_SCN_MEM_EXECUTE);
 458     BCase(IMAGE_SCN_MEM_READ);
 459     BCase(IMAGE_SCN_MEM_WRITE);
 460   }
 461 };
 462
 463 template <>
 464 struct ScalarBitSetTraits<COFF::Characteristics> {
 465   static void bitset(IO &IO, COFF::Characteristics &Value) {
 466     BCase(IMAGE_FILE_RELOCS_STRIPPED);
 467     BCase(IMAGE_FILE_EXECUTABLE_IMAGE);
 468     BCase(IMAGE_FILE_LINE_NUMS_STRIPPED);
 469     BCase(IMAGE_FILE_LOCAL_SYMS_STRIPPED);
 470     BCase(IMAGE_FILE_AGGRESSIVE_WS_TRIM);
 471     BCase(IMAGE_FILE_LARGE_ADDRESS_AWARE);
 472     BCase(IMAGE_FILE_BYTES_REVERSED_LO);
 473     BCase(IMAGE_FILE_32BIT_MACHINE);
 474     BCase(IMAGE_FILE_DEBUG_STRIPPED);
 475     BCase(IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP);
 476     BCase(IMAGE_FILE_NET_RUN_FROM_SWAP);
 477     BCase(IMAGE_FILE_SYSTEM);
 478     BCase(IMAGE_FILE_DLL);
 479     BCase(IMAGE_FILE_UP_SYSTEM_ONLY);
 480     BCase(IMAGE_FILE_BYTES_REVERSED_HI);
 481   }
 482 };
 483 #undef BCase
 484
 485 #define ECase(X) IO.enumCase(Value, #X, COFF::X);
 486
 487 template <>
 488 struct ScalarEnumerationTraits<COFF::SymbolComplexType> {
 489   static void enumeration(IO &IO, COFF::SymbolComplexType &Value) {
 490     ECase(IMAGE_SYM_DTYPE_NULL);
 491     ECase(IMAGE_SYM_DTYPE_POINTER);
 492     ECase(IMAGE_SYM_DTYPE_FUNCTION);
 493     ECase(IMAGE_SYM_DTYPE_ARRAY);
 494   }
 495 };
 496
 497 template <>
 498 struct ScalarEnumerationTraits<COFF::SymbolStorageClass> {
 499   static void enumeration(IO &IO, COFF::SymbolStorageClass &Value) {
 500     ECase(IMAGE_SYM_CLASS_END_OF_FUNCTION);
 501     ECase(IMAGE_SYM_CLASS_NULL);
 502     ECase(IMAGE_SYM_CLASS_AUTOMATIC);
 503     ECase(IMAGE_SYM_CLASS_EXTERNAL);
 504     ECase(IMAGE_SYM_CLASS_STATIC);
 505     ECase(IMAGE_SYM_CLASS_REGISTER);
 506     ECase(IMAGE_SYM_CLASS_EXTERNAL_DEF);
 507     ECase(IMAGE_SYM_CLASS_LABEL);
 508     ECase(IMAGE_SYM_CLASS_UNDEFINED_LABEL);
 509     ECase(IMAGE_SYM_CLASS_MEMBER_OF_STRUCT);
 510     ECase(IMAGE_SYM_CLASS_ARGUMENT);
 511     ECase(IMAGE_SYM_CLASS_STRUCT_TAG);
 512     ECase(IMAGE_SYM_CLASS_MEMBER_OF_UNION);
 513     ECase(IMAGE_SYM_CLASS_UNION_TAG);
 514     ECase(IMAGE_SYM_CLASS_TYPE_DEFINITION);
 515     ECase(IMAGE_SYM_CLASS_UNDEFINED_STATIC);
 516     ECase(IMAGE_SYM_CLASS_ENUM_TAG);
 517     ECase(IMAGE_SYM_CLASS_MEMBER_OF_ENUM);
 518     ECase(IMAGE_SYM_CLASS_REGISTER_PARAM);
 519     ECase(IMAGE_SYM_CLASS_BIT_FIELD);
 520     ECase(IMAGE_SYM_CLASS_BLOCK);
 521     ECase(IMAGE_SYM_CLASS_FUNCTION);
 522     ECase(IMAGE_SYM_CLASS_END_OF_STRUCT);
 523     ECase(IMAGE_SYM_CLASS_FILE);
 524     ECase(IMAGE_SYM_CLASS_SECTION);
 525     ECase(IMAGE_SYM_CLASS_WEAK_EXTERNAL);
 526     ECase(IMAGE_SYM_CLASS_CLR_TOKEN);
 527   }
 528 };
 529
 530 template <>
 531 struct ScalarEnumerationTraits<COFF::SymbolBaseType> {
 532   static void enumeration(IO &IO, COFF::SymbolBaseType &Value) {
 533     ECase(IMAGE_SYM_TYPE_NULL);
 534     ECase(IMAGE_SYM_TYPE_VOID);
 535     ECase(IMAGE_SYM_TYPE_CHAR);
 536     ECase(IMAGE_SYM_TYPE_SHORT);
 537     ECase(IMAGE_SYM_TYPE_INT);
 538     ECase(IMAGE_SYM_TYPE_LONG);
 539     ECase(IMAGE_SYM_TYPE_FLOAT);
 540     ECase(IMAGE_SYM_TYPE_DOUBLE);
 541     ECase(IMAGE_SYM_TYPE_STRUCT);
 542     ECase(IMAGE_SYM_TYPE_UNION);
 543     ECase(IMAGE_SYM_TYPE_ENUM);
 544     ECase(IMAGE_SYM_TYPE_MOE);
 545     ECase(IMAGE_SYM_TYPE_BYTE);
 546     ECase(IMAGE_SYM_TYPE_WORD);
 547     ECase(IMAGE_SYM_TYPE_UINT);
 548     ECase(IMAGE_SYM_TYPE_DWORD);
 549   }
 550 };
 551
 552 template <>
 553 struct ScalarEnumerationTraits<COFF::MachineTypes> {
 554   static void enumeration(IO &IO, COFF::MachineTypes &Value) {
 555     ECase(IMAGE_FILE_MACHINE_UNKNOWN);
 556     ECase(IMAGE_FILE_MACHINE_AM33);
 557     ECase(IMAGE_FILE_MACHINE_AMD64);
 558     ECase(IMAGE_FILE_MACHINE_ARM);
 559     ECase(IMAGE_FILE_MACHINE_ARMV7);
 560     ECase(IMAGE_FILE_MACHINE_EBC);
 561     ECase(IMAGE_FILE_MACHINE_I386);
 562     ECase(IMAGE_FILE_MACHINE_IA64);
 563     ECase(IMAGE_FILE_MACHINE_M32R);
 564     ECase(IMAGE_FILE_MACHINE_MIPS16);
 565     ECase(IMAGE_FILE_MACHINE_MIPSFPU);
 566     ECase(IMAGE_FILE_MACHINE_MIPSFPU16);
 567     ECase(IMAGE_FILE_MACHINE_POWERPC);
 568     ECase(IMAGE_FILE_MACHINE_POWERPCFP);
 569     ECase(IMAGE_FILE_MACHINE_R4000);
 570     ECase(IMAGE_FILE_MACHINE_SH3);
 571     ECase(IMAGE_FILE_MACHINE_SH3DSP);
 572     ECase(IMAGE_FILE_MACHINE_SH4);
 573     ECase(IMAGE_FILE_MACHINE_SH5);
 574     ECase(IMAGE_FILE_MACHINE_THUMB);
 575     ECase(IMAGE_FILE_MACHINE_WCEMIPSV2);
 576   }
 577 };
 578
 579 template <>
 580 struct ScalarEnumerationTraits<COFF::RelocationTypeX86> {
 581   static void enumeration(IO &IO, COFF::RelocationTypeX86 &Value) {
 582     ECase(IMAGE_REL_I386_ABSOLUTE);
 583     ECase(IMAGE_REL_I386_DIR16);
 584     ECase(IMAGE_REL_I386_REL16);
 585     ECase(IMAGE_REL_I386_DIR32);
 586     ECase(IMAGE_REL_I386_DIR32NB);
 587     ECase(IMAGE_REL_I386_SEG12);
 588     ECase(IMAGE_REL_I386_SECTION);
 589     ECase(IMAGE_REL_I386_SECREL);
 590     ECase(IMAGE_REL_I386_TOKEN);
 591     ECase(IMAGE_REL_I386_SECREL7);
 592     ECase(IMAGE_REL_I386_REL32);
 593     ECase(IMAGE_REL_AMD64_ABSOLUTE);
 594     ECase(IMAGE_REL_AMD64_ADDR64);
 595     ECase(IMAGE_REL_AMD64_ADDR32);
 596     ECase(IMAGE_REL_AMD64_ADDR32NB);
 597     ECase(IMAGE_REL_AMD64_REL32);
 598     ECase(IMAGE_REL_AMD64_REL32_1);
 599     ECase(IMAGE_REL_AMD64_REL32_2);
 600     ECase(IMAGE_REL_AMD64_REL32_3);
 601     ECase(IMAGE_REL_AMD64_REL32_4);
 602     ECase(IMAGE_REL_AMD64_REL32_5);
 603     ECase(IMAGE_REL_AMD64_SECTION);
 604     ECase(IMAGE_REL_AMD64_SECREL);
 605     ECase(IMAGE_REL_AMD64_SECREL7);
 606     ECase(IMAGE_REL_AMD64_TOKEN);
 607     ECase(IMAGE_REL_AMD64_SREL32);
 608     ECase(IMAGE_REL_AMD64_PAIR);
 609     ECase(IMAGE_REL_AMD64_SSPAN32);
 610   }
 611 };
 612
 613 #undef ECase
 614
 615 template <>
 616 struct MappingTraits<COFFYAML::Symbol> {
 617   static void mapping(IO &IO, COFFYAML::Symbol &S) {
 618     IO.mapRequired("SimpleType", S.SimpleType);
 619     IO.mapOptional("NumberOfAuxSymbols", S.NumberOfAuxSymbols);
 620     IO.mapRequired("Name", S.Name);
 621     IO.mapRequired("StorageClass", S.StorageClass);
 622     IO.mapOptional("AuxillaryData", S.AuxillaryData); // FIXME: typo
 623     IO.mapRequired("ComplexType", S.ComplexType);
 624     IO.mapRequired("Value", S.Value);
 625     IO.mapRequired("SectionNumber", S.SectionNumber);
 626   }
 627 };
 628
 629 template <>
 630 struct MappingTraits<COFF::header> {
 631   struct NMachine {
 632     NMachine(IO&) : Machine(COFF::MachineTypes(0)) {
 633     }
 634     NMachine(IO&, uint16_t M) : Machine(COFF::MachineTypes(M)) {
 635     }
 636     uint16_t denormalize(IO &) {
 637       return Machine;
 638     }
 639     COFF::MachineTypes Machine;
 640   };
 641
 642   struct NCharacteristics {
 643     NCharacteristics(IO&) : Characteristics(COFF::Characteristics(0)) {
 644     }
 645     NCharacteristics(IO&, uint16_t C) :
 646       Characteristics(COFF::Characteristics(C)) {
 647     }
 648     uint16_t denormalize(IO &) {
 649       return Characteristics;
 650     }
 651
 652     COFF::Characteristics Characteristics;
 653   };
 654
 655   static void mapping(IO &IO, COFF::header &H) {
 656     MappingNormalization<NMachine, uint16_t> NM(IO, H.Machine);
 657     MappingNormalization<NCharacteristics, uint16_t> NC(IO, H.Characteristics);
 658
 659     IO.mapRequired("Machine", NM->Machine);
 660     IO.mapOptional("Characteristics", NC->Characteristics);
 661   }
 662 };
 663
 664 template <>
 665 struct MappingTraits<COFF::relocation> {
 666   struct NType {
 667     NType(IO &) : Type(COFF::RelocationTypeX86(0)) {
 668     }
 669     NType(IO &, uint16_t T) : Type(COFF::RelocationTypeX86(T)) {
 670     }
 671     uint16_t denormalize(IO &) {
 672       return Type;
 673     }
 674     COFF::RelocationTypeX86 Type;
 675   };
 676
 677   static void mapping(IO &IO, COFF::relocation &Rel) {
 678     MappingNormalization<NType, uint16_t> NT(IO, Rel.Type);
 679
 680     IO.mapRequired("Type", NT->Type);
 681     IO.mapRequired("VirtualAddress", Rel.VirtualAddress);
 682     IO.mapRequired("SymbolTableIndex", Rel.SymbolTableIndex);
 683   }
 684 };
 685
 686 template <>
 687 struct MappingTraits<COFFYAML::Section> {
 688   static void mapping(IO &IO, COFFYAML::Section &Sec) {
 689     IO.mapOptional("Relocations", Sec.Relocations);
 690     IO.mapRequired("SectionData", Sec.SectionData);
 691     IO.mapRequired("Characteristics", Sec.Characteristics);
 692     IO.mapRequired("Name", Sec.Name);
 693   }
 694 };
 695
 696 template <>
 697 struct MappingTraits<COFFYAML::Object> {
 698   static void mapping(IO &IO, COFFYAML::Object &Obj) {
 699     IO.mapRequired("sections", Obj.Sections);
 700     IO.mapRequired("header", Obj.HeaderData);
 701     IO.mapRequired("symbols", Obj.Symbols);
 702   }
 703 };
 704 } // end namespace yaml
 705 } // end namespace llvm
 706
 707 int main(int argc, char **argv) {
 708   cl::ParseCommandLineOptions(argc, argv);
 709   sys::PrintStackTraceOnErrorSignal();
 710   PrettyStackTraceProgram X(argc, argv);
 711   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
 712
 713   OwningPtr<MemoryBuffer> Buf;
 714   if (MemoryBuffer::getFileOrSTDIN(Input, Buf))
 715     return 1;
 716
 717   yaml::Input YIn(Buf->getBuffer());
 718   COFFYAML::Object Doc;
 719   YIn >> Doc;
 720   if (YIn.error()) {
 721     errs() << "yaml2obj: Failed to parse YAML file!\n";
 722     return 1;
 723   }
 724
 725   COFFParser CP(Doc);
 726   if (!CP.parse()) {
 727     errs() << "yaml2obj: Failed to parse YAML file!\n";
 728     return 1;
 729   }
 730
 731   if (!layoutCOFF(CP)) {
 732     errs() << "yaml2obj: Failed to layout COFF file!\n";
 733     return 1;
 734   }
 735   writeCOFF(CP, outs());
 736 }