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