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