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::section Header;
 119     StringRef SectionData;
 120     std::vector<COFF::relocation> Relocations;
 121     StringRef Name;
 122     Section() {
 123       memset(&Header, 0, sizeof(COFF::section));
 124     }
 125   };
 126
 127   struct Symbol {
 128     COFF::symbol Header;
 129     COFF::SymbolBaseType SimpleType;
 130     COFF::SymbolComplexType ComplexType;
 131     StringRef AuxillaryData;
 132     StringRef Name;
 133     Symbol() {
 134       memset(&Header, 0, sizeof(COFF::symbol));
 135     }
 136   };
 137
 138   struct Object {
 139     COFF::header Header;
 140     std::vector<Section> Sections;
 141     std::vector<Symbol> Symbols;
 142     Object() {
 143       memset(&Header, 0, sizeof(COFF::header));
 144     }
 145   };
 146 }
 147
 148 /// This parses a yaml stream that represents a COFF object file.
 149 /// See docs/yaml2obj for the yaml scheema.
 150 struct COFFParser {
 151   COFFParser(COFFYAML::Object &Obj) : Obj(Obj) {
 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   bool parseSections() {
 158     for (std::vector<COFFYAML::Section>::iterator i = Obj.Sections.begin(),
 159            e = Obj.Sections.end(); i != e; ++i) {
 160       COFFYAML::Section &Sec = *i;
 161
 162       // If the name is less than 8 bytes, store it in place, otherwise
 163       // store it in the string table.
 164       StringRef Name = Sec.Name;
 165
 166       if (Name.size() <= COFF::NameSize) {
 167         std::copy(Name.begin(), Name.end(), Sec.Header.Name);
 168       } else {
 169         // Add string to the string table and format the index for output.
 170         unsigned Index = getStringIndex(Name);
 171         std::string str = utostr(Index);
 172         if (str.size() > 7) {
 173           errs() << "String table got too large";
 174           return false;
 175         }
 176         Sec.Header.Name[0] = '/';
 177         std::copy(str.begin(), str.end(), Sec.Header.Name + 1);
 178       }
 179     }
 180     return true;
 181   }
 182
 183   bool parseSymbols() {
 184     for (std::vector<COFFYAML::Symbol>::iterator i = Obj.Symbols.begin(),
 185            e = Obj.Symbols.end(); i != e; ++i) {
 186       COFFYAML::Symbol &Sym = *i;
 187
 188       // If the name is less than 8 bytes, store it in place, otherwise
 189       // store it in the string table.
 190       StringRef Name = Sym.Name;
 191       if (Name.size() <= COFF::NameSize) {
 192         std::copy(Name.begin(), Name.end(), Sym.Header.Name);
 193       } else {
 194         // Add string to the string table and format the index for output.
 195         unsigned Index = getStringIndex(Name);
 196         *reinterpret_cast<support::aligned_ulittle32_t*>(
 197             Sym.Header.Name + 4) = Index;
 198       }
 199
 200       Sym.Header.Type = Sym.SimpleType;
 201       Sym.Header.Type |= Sym.ComplexType << COFF::SCT_COMPLEX_TYPE_SHIFT;
 202     }
 203     return true;
 204   }
 205
 206   bool parse() {
 207     if (!parseSections())
 208       return false;
 209     if (!parseSymbols())
 210       return false;
 211     return true;
 212   }
 213
 214   unsigned getStringIndex(StringRef Str) {
 215     StringMap<unsigned>::iterator i = StringTableMap.find(Str);
 216     if (i == StringTableMap.end()) {
 217       unsigned Index = StringTable.size();
 218       StringTable.append(Str.begin(), Str.end());
 219       StringTable.push_back(0);
 220       StringTableMap[Str] = Index;
 221       return Index;
 222     }
 223     return i->second;
 224   }
 225
 226   COFFYAML::Object &Obj;
 227
 228   StringMap<unsigned> StringTableMap;
 229   std::string StringTable;
 230 };
 231
 232 // Take a CP and assign addresses and sizes to everything. Returns false if the
 233 // layout is not valid to do.
 234 static bool layoutCOFF(COFFParser &CP) {
 235   uint32_t SectionTableStart = 0;
 236   uint32_t SectionTableSize  = 0;
 237
 238   // The section table starts immediately after the header, including the
 239   // optional header.
 240   SectionTableStart = sizeof(COFF::header) + CP.Obj.Header.SizeOfOptionalHeader;
 241   SectionTableSize = sizeof(COFF::section) * CP.Obj.Sections.size();
 242
 243   uint32_t CurrentSectionDataOffset = SectionTableStart + SectionTableSize;
 244
 245   // Assign each section data address consecutively.
 246   for (std::vector<COFFYAML::Section>::iterator i = CP.Obj.Sections.begin(),
 247                                                 e = CP.Obj.Sections.end();
 248                                                 i != e; ++i) {
 249     if (!i->SectionData.empty()) {
 250       i->Header.SizeOfRawData = i->SectionData.size()/2;
 251       i->Header.PointerToRawData = CurrentSectionDataOffset;
 252       CurrentSectionDataOffset += i->Header.SizeOfRawData;
 253       if (!i->Relocations.empty()) {
 254         i->Header.PointerToRelocations = CurrentSectionDataOffset;
 255         i->Header.NumberOfRelocations = i->Relocations.size();
 256         CurrentSectionDataOffset += i->Header.NumberOfRelocations *
 257           COFF::RelocationSize;
 258       }
 259       // TODO: Handle alignment.
 260     } else {
 261       i->Header.SizeOfRawData = 0;
 262       i->Header.PointerToRawData = 0;
 263     }
 264   }
 265
 266   uint32_t SymbolTableStart = CurrentSectionDataOffset;
 267
 268   // Calculate number of symbols.
 269   uint32_t NumberOfSymbols = 0;
 270   for (std::vector<COFFYAML::Symbol>::iterator i = CP.Obj.Symbols.begin(),
 271                                                e = CP.Obj.Symbols.end();
 272                                                i != e; ++i) {
 273     unsigned AuxBytes = i->AuxillaryData.size() / 2;
 274     if (AuxBytes % COFF::SymbolSize != 0) {
 275       errs() << "AuxillaryData size not a multiple of symbol size!\n";
 276       return false;
 277     }
 278     i->Header.NumberOfAuxSymbols = AuxBytes / COFF::SymbolSize;
 279     NumberOfSymbols += 1 + i->Header.NumberOfAuxSymbols;
 280   }
 281
 282   // Store all the allocated start addresses in the header.
 283   CP.Obj.Header.NumberOfSections = CP.Obj.Sections.size();
 284   CP.Obj.Header.NumberOfSymbols = NumberOfSymbols;
 285   CP.Obj.Header.PointerToSymbolTable = SymbolTableStart;
 286
 287   *reinterpret_cast<support::ulittle32_t *>(&CP.StringTable[0])
 288     = CP.StringTable.size();
 289
 290   return true;
 291 }
 292
 293 template <typename value_type>
 294 struct binary_le_impl {
 295   value_type Value;
 296   binary_le_impl(value_type V) : Value(V) {}
 297 };
 298
 299 template <typename value_type>
 300 raw_ostream &operator <<( raw_ostream &OS
 301                         , const binary_le_impl<value_type> &BLE) {
 302   char Buffer[sizeof(BLE.Value)];
 303   support::endian::write<value_type, support::little, support::unaligned>(
 304     Buffer, BLE.Value);
 305   OS.write(Buffer, sizeof(BLE.Value));
 306   return OS;
 307 }
 308
 309 template <typename value_type>
 310 binary_le_impl<value_type> binary_le(value_type V) {
 311   return binary_le_impl<value_type>(V);
 312 }
 313
 314 bool writeCOFF(COFFParser &CP, raw_ostream &OS) {
 315   OS << binary_le(CP.Obj.Header.Machine)
 316      << binary_le(CP.Obj.Header.NumberOfSections)
 317      << binary_le(CP.Obj.Header.TimeDateStamp)
 318      << binary_le(CP.Obj.Header.PointerToSymbolTable)
 319      << binary_le(CP.Obj.Header.NumberOfSymbols)
 320      << binary_le(CP.Obj.Header.SizeOfOptionalHeader)
 321      << binary_le(CP.Obj.Header.Characteristics);
 322
 323   // Output section table.
 324   for (std::vector<COFFYAML::Section>::iterator i = CP.Obj.Sections.begin(),
 325                                                 e = CP.Obj.Sections.end();
 326                                                 i != e; ++i) {
 327     OS.write(i->Header.Name, COFF::NameSize);
 328     OS << binary_le(i->Header.VirtualSize)
 329        << binary_le(i->Header.VirtualAddress)
 330        << binary_le(i->Header.SizeOfRawData)
 331        << binary_le(i->Header.PointerToRawData)
 332        << binary_le(i->Header.PointerToRelocations)
 333        << binary_le(i->Header.PointerToLineNumbers)
 334        << binary_le(i->Header.NumberOfRelocations)
 335        << binary_le(i->Header.NumberOfLineNumbers)
 336        << binary_le(i->Header.Characteristics);
 337   }
 338
 339   // Output section data.
 340   for (std::vector<COFFYAML::Section>::iterator i = CP.Obj.Sections.begin(),
 341                                                 e = CP.Obj.Sections.end();
 342                                                 i != e; ++i) {
 343     if (!i->SectionData.empty()) {
 344       std::vector<uint8_t> Data;
 345       if (!hexStringToByteArray(i->SectionData, Data)) {
 346         errs() << "SectionData must be a collection of pairs of hex bytes";
 347         return false;
 348       }
 349
 350       OS.write(reinterpret_cast<const char*>(&Data[0]), Data.size());
 351     }
 352     for (unsigned I2 = 0, E2 = i->Relocations.size(); I2 != E2; ++I2) {
 353       const COFF::relocation &R = i->Relocations[I2];
 354       OS << binary_le(R.VirtualAddress)
 355          << binary_le(R.SymbolTableIndex)
 356          << binary_le(R.Type);
 357     }
 358   }
 359
 360   // Output symbol table.
 361
 362   for (std::vector<COFFYAML::Symbol>::const_iterator i = CP.Obj.Symbols.begin(),
 363                                                      e = CP.Obj.Symbols.end();
 364                                                      i != e; ++i) {
 365     OS.write(i->Header.Name, COFF::NameSize);
 366     OS << binary_le(i->Header.Value)
 367        << binary_le(i->Header.SectionNumber)
 368        << binary_le(i->Header.Type)
 369        << binary_le(i->Header.StorageClass)
 370        << binary_le(i->Header.NumberOfAuxSymbols);
 371     if (!i->AuxillaryData.empty()) {
 372       std::vector<uint8_t> AuxSymbols;
 373       if (!hexStringToByteArray(i->AuxillaryData, AuxSymbols)) {
 374         errs() << "AuxillaryData must be a collection of pairs of hex bytes";
 375         return false;
 376       }
 377
 378       OS.write(reinterpret_cast<const char*>(&AuxSymbols[0]),
 379                AuxSymbols.size());
 380     }
 381   }
 382
 383   // Output string table.
 384   OS.write(&CP.StringTable[0], CP.StringTable.size());
 385   return true;
 386 }
 387
 388 LLVM_YAML_IS_SEQUENCE_VECTOR(COFF::relocation)
 389 LLVM_YAML_IS_SEQUENCE_VECTOR(COFFYAML::Section)
 390 LLVM_YAML_IS_SEQUENCE_VECTOR(COFFYAML::Symbol)
 391
 392 namespace llvm {
 393
 394 namespace COFF {
 395   Characteristics operator|(Characteristics a, Characteristics b) {
 396     uint32_t Ret = static_cast<uint32_t>(a) | static_cast<uint32_t>(b);
 397     return static_cast<Characteristics>(Ret);
 398   }
 399
 400   SectionCharacteristics
 401   operator|(SectionCharacteristics a, SectionCharacteristics b) {
 402     uint32_t Ret = static_cast<uint32_t>(a) | static_cast<uint32_t>(b);
 403     return static_cast<SectionCharacteristics>(Ret);
 404   }
 405 }
 406
 407 namespace yaml {
 408
 409 #define BCase(X) IO.bitSetCase(Value, #X, COFF::X);
 410
 411 template <>
 412 struct ScalarBitSetTraits<COFF::SectionCharacteristics> {
 413   static void bitset(IO &IO, COFF::SectionCharacteristics &Value) {
 414     BCase(IMAGE_SCN_TYPE_NO_PAD);
 415     BCase(IMAGE_SCN_CNT_CODE);
 416     BCase(IMAGE_SCN_CNT_INITIALIZED_DATA);
 417     BCase(IMAGE_SCN_CNT_UNINITIALIZED_DATA);
 418     BCase(IMAGE_SCN_LNK_OTHER);
 419     BCase(IMAGE_SCN_LNK_INFO);
 420     BCase(IMAGE_SCN_LNK_REMOVE);
 421     BCase(IMAGE_SCN_LNK_COMDAT);
 422     BCase(IMAGE_SCN_GPREL);
 423     BCase(IMAGE_SCN_MEM_PURGEABLE);
 424     BCase(IMAGE_SCN_MEM_16BIT);
 425     BCase(IMAGE_SCN_MEM_LOCKED);
 426     BCase(IMAGE_SCN_MEM_PRELOAD);
 427     BCase(IMAGE_SCN_ALIGN_1BYTES);
 428     BCase(IMAGE_SCN_ALIGN_2BYTES);
 429     BCase(IMAGE_SCN_ALIGN_4BYTES);
 430     BCase(IMAGE_SCN_ALIGN_8BYTES);
 431     BCase(IMAGE_SCN_ALIGN_16BYTES);
 432     BCase(IMAGE_SCN_ALIGN_32BYTES);
 433     BCase(IMAGE_SCN_ALIGN_64BYTES);
 434     BCase(IMAGE_SCN_ALIGN_128BYTES);
 435     BCase(IMAGE_SCN_ALIGN_256BYTES);
 436     BCase(IMAGE_SCN_ALIGN_512BYTES);
 437     BCase(IMAGE_SCN_ALIGN_1024BYTES);
 438     BCase(IMAGE_SCN_ALIGN_2048BYTES);
 439     BCase(IMAGE_SCN_ALIGN_4096BYTES);
 440     BCase(IMAGE_SCN_ALIGN_8192BYTES);
 441     BCase(IMAGE_SCN_LNK_NRELOC_OVFL);
 442     BCase(IMAGE_SCN_MEM_DISCARDABLE);
 443     BCase(IMAGE_SCN_MEM_NOT_CACHED);
 444     BCase(IMAGE_SCN_MEM_NOT_PAGED);
 445     BCase(IMAGE_SCN_MEM_SHARED);
 446     BCase(IMAGE_SCN_MEM_EXECUTE);
 447     BCase(IMAGE_SCN_MEM_READ);
 448     BCase(IMAGE_SCN_MEM_WRITE);
 449   }
 450 };
 451
 452 template <>
 453 struct ScalarBitSetTraits<COFF::Characteristics> {
 454   static void bitset(IO &IO, COFF::Characteristics &Value) {
 455     BCase(IMAGE_FILE_RELOCS_STRIPPED);
 456     BCase(IMAGE_FILE_EXECUTABLE_IMAGE);
 457     BCase(IMAGE_FILE_LINE_NUMS_STRIPPED);
 458     BCase(IMAGE_FILE_LOCAL_SYMS_STRIPPED);
 459     BCase(IMAGE_FILE_AGGRESSIVE_WS_TRIM);
 460     BCase(IMAGE_FILE_LARGE_ADDRESS_AWARE);
 461     BCase(IMAGE_FILE_BYTES_REVERSED_LO);
 462     BCase(IMAGE_FILE_32BIT_MACHINE);
 463     BCase(IMAGE_FILE_DEBUG_STRIPPED);
 464     BCase(IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP);
 465     BCase(IMAGE_FILE_NET_RUN_FROM_SWAP);
 466     BCase(IMAGE_FILE_SYSTEM);
 467     BCase(IMAGE_FILE_DLL);
 468     BCase(IMAGE_FILE_UP_SYSTEM_ONLY);
 469     BCase(IMAGE_FILE_BYTES_REVERSED_HI);
 470   }
 471 };
 472 #undef BCase
 473
 474 #define ECase(X) IO.enumCase(Value, #X, COFF::X);
 475
 476 template <>
 477 struct ScalarEnumerationTraits<COFF::SymbolComplexType> {
 478   static void enumeration(IO &IO, COFF::SymbolComplexType &Value) {
 479     ECase(IMAGE_SYM_DTYPE_NULL);
 480     ECase(IMAGE_SYM_DTYPE_POINTER);
 481     ECase(IMAGE_SYM_DTYPE_FUNCTION);
 482     ECase(IMAGE_SYM_DTYPE_ARRAY);
 483   }
 484 };
 485
 486 template <>
 487 struct ScalarEnumerationTraits<COFF::SymbolStorageClass> {
 488   static void enumeration(IO &IO, COFF::SymbolStorageClass &Value) {
 489     ECase(IMAGE_SYM_CLASS_END_OF_FUNCTION);
 490     ECase(IMAGE_SYM_CLASS_NULL);
 491     ECase(IMAGE_SYM_CLASS_AUTOMATIC);
 492     ECase(IMAGE_SYM_CLASS_EXTERNAL);
 493     ECase(IMAGE_SYM_CLASS_STATIC);
 494     ECase(IMAGE_SYM_CLASS_REGISTER);
 495     ECase(IMAGE_SYM_CLASS_EXTERNAL_DEF);
 496     ECase(IMAGE_SYM_CLASS_LABEL);
 497     ECase(IMAGE_SYM_CLASS_UNDEFINED_LABEL);
 498     ECase(IMAGE_SYM_CLASS_MEMBER_OF_STRUCT);
 499     ECase(IMAGE_SYM_CLASS_ARGUMENT);
 500     ECase(IMAGE_SYM_CLASS_STRUCT_TAG);
 501     ECase(IMAGE_SYM_CLASS_MEMBER_OF_UNION);
 502     ECase(IMAGE_SYM_CLASS_UNION_TAG);
 503     ECase(IMAGE_SYM_CLASS_TYPE_DEFINITION);
 504     ECase(IMAGE_SYM_CLASS_UNDEFINED_STATIC);
 505     ECase(IMAGE_SYM_CLASS_ENUM_TAG);
 506     ECase(IMAGE_SYM_CLASS_MEMBER_OF_ENUM);
 507     ECase(IMAGE_SYM_CLASS_REGISTER_PARAM);
 508     ECase(IMAGE_SYM_CLASS_BIT_FIELD);
 509     ECase(IMAGE_SYM_CLASS_BLOCK);
 510     ECase(IMAGE_SYM_CLASS_FUNCTION);
 511     ECase(IMAGE_SYM_CLASS_END_OF_STRUCT);
 512     ECase(IMAGE_SYM_CLASS_FILE);
 513     ECase(IMAGE_SYM_CLASS_SECTION);
 514     ECase(IMAGE_SYM_CLASS_WEAK_EXTERNAL);
 515     ECase(IMAGE_SYM_CLASS_CLR_TOKEN);
 516   }
 517 };
 518
 519 template <>
 520 struct ScalarEnumerationTraits<COFF::SymbolBaseType> {
 521   static void enumeration(IO &IO, COFF::SymbolBaseType &Value) {
 522     ECase(IMAGE_SYM_TYPE_NULL);
 523     ECase(IMAGE_SYM_TYPE_VOID);
 524     ECase(IMAGE_SYM_TYPE_CHAR);
 525     ECase(IMAGE_SYM_TYPE_SHORT);
 526     ECase(IMAGE_SYM_TYPE_INT);
 527     ECase(IMAGE_SYM_TYPE_LONG);
 528     ECase(IMAGE_SYM_TYPE_FLOAT);
 529     ECase(IMAGE_SYM_TYPE_DOUBLE);
 530     ECase(IMAGE_SYM_TYPE_STRUCT);
 531     ECase(IMAGE_SYM_TYPE_UNION);
 532     ECase(IMAGE_SYM_TYPE_ENUM);
 533     ECase(IMAGE_SYM_TYPE_MOE);
 534     ECase(IMAGE_SYM_TYPE_BYTE);
 535     ECase(IMAGE_SYM_TYPE_WORD);
 536     ECase(IMAGE_SYM_TYPE_UINT);
 537     ECase(IMAGE_SYM_TYPE_DWORD);
 538   }
 539 };
 540
 541 template <>
 542 struct ScalarEnumerationTraits<COFF::MachineTypes> {
 543   static void enumeration(IO &IO, COFF::MachineTypes &Value) {
 544     ECase(IMAGE_FILE_MACHINE_UNKNOWN);
 545     ECase(IMAGE_FILE_MACHINE_AM33);
 546     ECase(IMAGE_FILE_MACHINE_AMD64);
 547     ECase(IMAGE_FILE_MACHINE_ARM);
 548     ECase(IMAGE_FILE_MACHINE_ARMV7);
 549     ECase(IMAGE_FILE_MACHINE_EBC);
 550     ECase(IMAGE_FILE_MACHINE_I386);
 551     ECase(IMAGE_FILE_MACHINE_IA64);
 552     ECase(IMAGE_FILE_MACHINE_M32R);
 553     ECase(IMAGE_FILE_MACHINE_MIPS16);
 554     ECase(IMAGE_FILE_MACHINE_MIPSFPU);
 555     ECase(IMAGE_FILE_MACHINE_MIPSFPU16);
 556     ECase(IMAGE_FILE_MACHINE_POWERPC);
 557     ECase(IMAGE_FILE_MACHINE_POWERPCFP);
 558     ECase(IMAGE_FILE_MACHINE_R4000);
 559     ECase(IMAGE_FILE_MACHINE_SH3);
 560     ECase(IMAGE_FILE_MACHINE_SH3DSP);
 561     ECase(IMAGE_FILE_MACHINE_SH4);
 562     ECase(IMAGE_FILE_MACHINE_SH5);
 563     ECase(IMAGE_FILE_MACHINE_THUMB);
 564     ECase(IMAGE_FILE_MACHINE_WCEMIPSV2);
 565   }
 566 };
 567
 568 template <>
 569 struct ScalarEnumerationTraits<COFF::RelocationTypeX86> {
 570   static void enumeration(IO &IO, COFF::RelocationTypeX86 &Value) {
 571     ECase(IMAGE_REL_I386_ABSOLUTE);
 572     ECase(IMAGE_REL_I386_DIR16);
 573     ECase(IMAGE_REL_I386_REL16);
 574     ECase(IMAGE_REL_I386_DIR32);
 575     ECase(IMAGE_REL_I386_DIR32NB);
 576     ECase(IMAGE_REL_I386_SEG12);
 577     ECase(IMAGE_REL_I386_SECTION);
 578     ECase(IMAGE_REL_I386_SECREL);
 579     ECase(IMAGE_REL_I386_TOKEN);
 580     ECase(IMAGE_REL_I386_SECREL7);
 581     ECase(IMAGE_REL_I386_REL32);
 582     ECase(IMAGE_REL_AMD64_ABSOLUTE);
 583     ECase(IMAGE_REL_AMD64_ADDR64);
 584     ECase(IMAGE_REL_AMD64_ADDR32);
 585     ECase(IMAGE_REL_AMD64_ADDR32NB);
 586     ECase(IMAGE_REL_AMD64_REL32);
 587     ECase(IMAGE_REL_AMD64_REL32_1);
 588     ECase(IMAGE_REL_AMD64_REL32_2);
 589     ECase(IMAGE_REL_AMD64_REL32_3);
 590     ECase(IMAGE_REL_AMD64_REL32_4);
 591     ECase(IMAGE_REL_AMD64_REL32_5);
 592     ECase(IMAGE_REL_AMD64_SECTION);
 593     ECase(IMAGE_REL_AMD64_SECREL);
 594     ECase(IMAGE_REL_AMD64_SECREL7);
 595     ECase(IMAGE_REL_AMD64_TOKEN);
 596     ECase(IMAGE_REL_AMD64_SREL32);
 597     ECase(IMAGE_REL_AMD64_PAIR);
 598     ECase(IMAGE_REL_AMD64_SSPAN32);
 599   }
 600 };
 601
 602 #undef ECase
 603
 604 template <>
 605 struct MappingTraits<COFFYAML::Symbol> {
 606   struct NStorageClass {
 607     NStorageClass(IO&) : StorageClass(COFF::SymbolStorageClass(0)) {
 608     }
 609     NStorageClass(IO&, uint8_t S) : StorageClass(COFF::SymbolStorageClass(S)) {
 610     }
 611     uint8_t denormalize(IO &) {
 612       return StorageClass;
 613     }
 614
 615     COFF::SymbolStorageClass StorageClass;
 616   };
 617
 618   static void mapping(IO &IO, COFFYAML::Symbol &S) {
 619     MappingNormalization<NStorageClass, uint8_t> NS(IO, S.Header.StorageClass);
 620
 621     IO.mapRequired("SimpleType", S.SimpleType);
 622     IO.mapOptional("NumberOfAuxSymbols", S.Header.NumberOfAuxSymbols);
 623     IO.mapRequired("Name", S.Name);
 624     IO.mapRequired("StorageClass", NS->StorageClass);
 625     IO.mapOptional("AuxillaryData", S.AuxillaryData); // FIXME: typo
 626     IO.mapRequired("ComplexType", S.ComplexType);
 627     IO.mapRequired("Value", S.Header.Value);
 628     IO.mapRequired("SectionNumber", S.Header.SectionNumber);
 629   }
 630 };
 631
 632 template <>
 633 struct MappingTraits<COFF::header> {
 634   struct NMachine {
 635     NMachine(IO&) : Machine(COFF::MachineTypes(0)) {
 636     }
 637     NMachine(IO&, uint16_t M) : Machine(COFF::MachineTypes(M)) {
 638     }
 639     uint16_t denormalize(IO &) {
 640       return Machine;
 641     }
 642     COFF::MachineTypes Machine;
 643   };
 644
 645   struct NCharacteristics {
 646     NCharacteristics(IO&) : Characteristics(COFF::Characteristics(0)) {
 647     }
 648     NCharacteristics(IO&, uint16_t C) :
 649       Characteristics(COFF::Characteristics(C)) {
 650     }
 651     uint16_t denormalize(IO &) {
 652       return Characteristics;
 653     }
 654
 655     COFF::Characteristics Characteristics;
 656   };
 657
 658   static void mapping(IO &IO, COFF::header &H) {
 659     MappingNormalization<NMachine, uint16_t> NM(IO, H.Machine);
 660     MappingNormalization<NCharacteristics, uint16_t> NC(IO, H.Characteristics);
 661
 662     IO.mapRequired("Machine", NM->Machine);
 663     IO.mapOptional("Characteristics", NC->Characteristics);
 664   }
 665 };
 666
 667 template <>
 668 struct MappingTraits<COFF::relocation> {
 669   struct NType {
 670     NType(IO &) : Type(COFF::RelocationTypeX86(0)) {
 671     }
 672     NType(IO &, uint16_t T) : Type(COFF::RelocationTypeX86(T)) {
 673     }
 674     uint16_t denormalize(IO &) {
 675       return Type;
 676     }
 677     COFF::RelocationTypeX86 Type;
 678   };
 679
 680   static void mapping(IO &IO, COFF::relocation &Rel) {
 681     MappingNormalization<NType, uint16_t> NT(IO, Rel.Type);
 682
 683     IO.mapRequired("Type", NT->Type);
 684     IO.mapRequired("VirtualAddress", Rel.VirtualAddress);
 685     IO.mapRequired("SymbolTableIndex", Rel.SymbolTableIndex);
 686   }
 687 };
 688
 689 template <>
 690 struct MappingTraits<COFFYAML::Section> {
 691   struct NCharacteristics {
 692     NCharacteristics(IO &) : Characteristics(COFF::SectionCharacteristics(0)) {
 693     }
 694     NCharacteristics(IO &, uint32_t C) :
 695       Characteristics(COFF::SectionCharacteristics(C)) {
 696     }
 697     uint32_t denormalize(IO &) {
 698       return Characteristics;
 699     }
 700     COFF::SectionCharacteristics Characteristics;
 701   };
 702
 703   static void mapping(IO &IO, COFFYAML::Section &Sec) {
 704     MappingNormalization<NCharacteristics, uint32_t> NC(IO,
 705                                                     Sec.Header.Characteristics);
 706     IO.mapOptional("Relocations", Sec.Relocations);
 707     IO.mapRequired("SectionData", Sec.SectionData);
 708     IO.mapRequired("Characteristics", NC->Characteristics);
 709     IO.mapRequired("Name", Sec.Name);
 710   }
 711 };
 712
 713 template <>
 714 struct MappingTraits<COFFYAML::Object> {
 715   static void mapping(IO &IO, COFFYAML::Object &Obj) {
 716     IO.mapRequired("sections", Obj.Sections);
 717     IO.mapRequired("header", Obj.Header);
 718     IO.mapRequired("symbols", Obj.Symbols);
 719   }
 720 };
 721 } // end namespace yaml
 722 } // end namespace llvm
 723
 724 int main(int argc, char **argv) {
 725   cl::ParseCommandLineOptions(argc, argv);
 726   sys::PrintStackTraceOnErrorSignal();
 727   PrettyStackTraceProgram X(argc, argv);
 728   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
 729
 730   OwningPtr<MemoryBuffer> Buf;
 731   if (MemoryBuffer::getFileOrSTDIN(Input, Buf))
 732     return 1;
 733
 734   yaml::Input YIn(Buf->getBuffer());
 735   COFFYAML::Object Doc;
 736   YIn >> Doc;
 737   if (YIn.error()) {
 738     errs() << "yaml2obj: Failed to parse YAML file!\n";
 739     return 1;
 740   }
 741
 742   COFFParser CP(Doc);
 743   if (!CP.parse()) {
 744     errs() << "yaml2obj: Failed to parse YAML file!\n";
 745     return 1;
 746   }
 747
 748   if (!layoutCOFF(CP)) {
 749     errs() << "yaml2obj: Failed to layout COFF file!\n";
 750     return 1;
 751   }
 752   if (!writeCOFF(CP, outs())) {
 753     errs() << "yaml2obj: Failed to write COFF file!\n";
 754     return 1;
 755   }
 756 }