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