1 //===-- llvm/Support/COFF.h -------------------------------------*- C++ -*-===// 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 file contains an definitions used in Windows COFF Files. 11 // 12 // Structures and enums defined within this file where created using 13 // information from Microsoft's publicly available PE/COFF format document: 14 // 15 // Microsoft Portable Executable and Common Object File Format Specification 16 // Revision 8.1 - February 15, 2008 17 // 18 // As of 5/2/2010, hosted by Microsoft at: 19 // http://www.microsoft.com/whdc/system/platform/firmware/pecoff.mspx 20 // 21 //===----------------------------------------------------------------------===// 22 23 #ifndef LLVM_SUPPORT_COFF_H 24 #define LLVM_SUPPORT_COFF_H 25 26 #include "llvm/Support/DataTypes.h" 27 #include <cassert> 28 #include <cstring> 29 30 namespace llvm { 31 namespace COFF { 32 33 // The maximum number of sections that a COFF object can have (inclusive). 34 const int32_t MaxNumberOfSections16 = 65279; 35 36 // The PE signature bytes that follows the DOS stub header. 37 static const char PEMagic[] = { 'P', 'E', '\0', '\0' }; 38 39 static const char BigObjMagic[] = { 40 '\xc7', '\xa1', '\xba', '\xd1', '\xee', '\xba', '\xa9', '\x4b', 41 '\xaf', '\x20', '\xfa', '\xf6', '\x6a', '\xa4', '\xdc', '\xb8', 42 }; 43 44 // Sizes in bytes of various things in the COFF format. 45 enum { 46 Header16Size = 20, 47 Header32Size = 56, 48 NameSize = 8, 49 Symbol16Size = 18, 50 Symbol32Size = 20, 51 SectionSize = 40, 52 RelocationSize = 10 53 }; 54 55 struct header { 56 uint16_t Machine; 57 int32_t NumberOfSections; 58 uint32_t TimeDateStamp; 59 uint32_t PointerToSymbolTable; 60 uint32_t NumberOfSymbols; 61 uint16_t SizeOfOptionalHeader; 62 uint16_t Characteristics; 63 }; 64 65 struct BigObjHeader { 66 enum : uint16_t { MinBigObjectVersion = 2 }; 67 68 uint16_t Sig1; ///< Must be IMAGE_FILE_MACHINE_UNKNOWN (0). 69 uint16_t Sig2; ///< Must be 0xFFFF. 70 uint16_t Version; 71 uint16_t Machine; 72 uint32_t TimeDateStamp; 73 uint8_t UUID[16]; 74 uint32_t unused1; 75 uint32_t unused2; 76 uint32_t unused3; 77 uint32_t unused4; 78 uint32_t NumberOfSections; 79 uint32_t PointerToSymbolTable; 80 uint32_t NumberOfSymbols; 81 }; 82 83 enum MachineTypes { 84 MT_Invalid = 0xffff, 85 86 IMAGE_FILE_MACHINE_UNKNOWN = 0x0, 87 IMAGE_FILE_MACHINE_AM33 = 0x13, 88 IMAGE_FILE_MACHINE_AMD64 = 0x8664, 89 IMAGE_FILE_MACHINE_ARM = 0x1C0, 90 IMAGE_FILE_MACHINE_ARMNT = 0x1C4, 91 IMAGE_FILE_MACHINE_EBC = 0xEBC, 92 IMAGE_FILE_MACHINE_I386 = 0x14C, 93 IMAGE_FILE_MACHINE_IA64 = 0x200, 94 IMAGE_FILE_MACHINE_M32R = 0x9041, 95 IMAGE_FILE_MACHINE_MIPS16 = 0x266, 96 IMAGE_FILE_MACHINE_MIPSFPU = 0x366, 97 IMAGE_FILE_MACHINE_MIPSFPU16 = 0x466, 98 IMAGE_FILE_MACHINE_POWERPC = 0x1F0, 99 IMAGE_FILE_MACHINE_POWERPCFP = 0x1F1, 100 IMAGE_FILE_MACHINE_R4000 = 0x166, 101 IMAGE_FILE_MACHINE_SH3 = 0x1A2, 102 IMAGE_FILE_MACHINE_SH3DSP = 0x1A3, 103 IMAGE_FILE_MACHINE_SH4 = 0x1A6, 104 IMAGE_FILE_MACHINE_SH5 = 0x1A8, 105 IMAGE_FILE_MACHINE_THUMB = 0x1C2, 106 IMAGE_FILE_MACHINE_WCEMIPSV2 = 0x169 107 }; 108 109 enum Characteristics { 110 C_Invalid = 0, 111 112 /// The file does not contain base relocations and must be loaded at its 113 /// preferred base. If this cannot be done, the loader will error. 114 IMAGE_FILE_RELOCS_STRIPPED = 0x0001, 115 /// The file is valid and can be run. 116 IMAGE_FILE_EXECUTABLE_IMAGE = 0x0002, 117 /// COFF line numbers have been stripped. This is deprecated and should be 118 /// 0. 119 IMAGE_FILE_LINE_NUMS_STRIPPED = 0x0004, 120 /// COFF symbol table entries for local symbols have been removed. This is 121 /// deprecated and should be 0. 122 IMAGE_FILE_LOCAL_SYMS_STRIPPED = 0x0008, 123 /// Aggressively trim working set. This is deprecated and must be 0. 124 IMAGE_FILE_AGGRESSIVE_WS_TRIM = 0x0010, 125 /// Image can handle > 2GiB addresses. 126 IMAGE_FILE_LARGE_ADDRESS_AWARE = 0x0020, 127 /// Little endian: the LSB precedes the MSB in memory. This is deprecated 128 /// and should be 0. 129 IMAGE_FILE_BYTES_REVERSED_LO = 0x0080, 130 /// Machine is based on a 32bit word architecture. 131 IMAGE_FILE_32BIT_MACHINE = 0x0100, 132 /// Debugging info has been removed. 133 IMAGE_FILE_DEBUG_STRIPPED = 0x0200, 134 /// If the image is on removable media, fully load it and copy it to swap. 135 IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP = 0x0400, 136 /// If the image is on network media, fully load it and copy it to swap. 137 IMAGE_FILE_NET_RUN_FROM_SWAP = 0x0800, 138 /// The image file is a system file, not a user program. 139 IMAGE_FILE_SYSTEM = 0x1000, 140 /// The image file is a DLL. 141 IMAGE_FILE_DLL = 0x2000, 142 /// This file should only be run on a uniprocessor machine. 143 IMAGE_FILE_UP_SYSTEM_ONLY = 0x4000, 144 /// Big endian: the MSB precedes the LSB in memory. This is deprecated 145 /// and should be 0. 146 IMAGE_FILE_BYTES_REVERSED_HI = 0x8000 147 }; 148 149 struct symbol { 150 char Name[NameSize]; 151 uint32_t Value; 152 int32_t SectionNumber; 153 uint16_t Type; 154 uint8_t StorageClass; 155 uint8_t NumberOfAuxSymbols; 156 }; 157 158 enum SymbolFlags { 159 SF_TypeMask = 0x0000FFFF, 160 SF_TypeShift = 0, 161 162 SF_ClassMask = 0x00FF0000, 163 SF_ClassShift = 16, 164 165 SF_WeakExternal = 0x01000000 166 }; 167 168 enum SymbolSectionNumber : int32_t { 169 IMAGE_SYM_DEBUG = -2, 170 IMAGE_SYM_ABSOLUTE = -1, 171 IMAGE_SYM_UNDEFINED = 0 172 }; 173 174 /// Storage class tells where and what the symbol represents 175 enum SymbolStorageClass { 176 SSC_Invalid = 0xff, 177 178 IMAGE_SYM_CLASS_END_OF_FUNCTION = -1, ///< Physical end of function 179 IMAGE_SYM_CLASS_NULL = 0, ///< No symbol 180 IMAGE_SYM_CLASS_AUTOMATIC = 1, ///< Stack variable 181 IMAGE_SYM_CLASS_EXTERNAL = 2, ///< External symbol 182 IMAGE_SYM_CLASS_STATIC = 3, ///< Static 183 IMAGE_SYM_CLASS_REGISTER = 4, ///< Register variable 184 IMAGE_SYM_CLASS_EXTERNAL_DEF = 5, ///< External definition 185 IMAGE_SYM_CLASS_LABEL = 6, ///< Label 186 IMAGE_SYM_CLASS_UNDEFINED_LABEL = 7, ///< Undefined label 187 IMAGE_SYM_CLASS_MEMBER_OF_STRUCT = 8, ///< Member of structure 188 IMAGE_SYM_CLASS_ARGUMENT = 9, ///< Function argument 189 IMAGE_SYM_CLASS_STRUCT_TAG = 10, ///< Structure tag 190 IMAGE_SYM_CLASS_MEMBER_OF_UNION = 11, ///< Member of union 191 IMAGE_SYM_CLASS_UNION_TAG = 12, ///< Union tag 192 IMAGE_SYM_CLASS_TYPE_DEFINITION = 13, ///< Type definition 193 IMAGE_SYM_CLASS_UNDEFINED_STATIC = 14, ///< Undefined static 194 IMAGE_SYM_CLASS_ENUM_TAG = 15, ///< Enumeration tag 195 IMAGE_SYM_CLASS_MEMBER_OF_ENUM = 16, ///< Member of enumeration 196 IMAGE_SYM_CLASS_REGISTER_PARAM = 17, ///< Register parameter 197 IMAGE_SYM_CLASS_BIT_FIELD = 18, ///< Bit field 198 /// ".bb" or ".eb" - beginning or end of block 199 IMAGE_SYM_CLASS_BLOCK = 100, 200 /// ".bf" or ".ef" - beginning or end of function 201 IMAGE_SYM_CLASS_FUNCTION = 101, 202 IMAGE_SYM_CLASS_END_OF_STRUCT = 102, ///< End of structure 203 IMAGE_SYM_CLASS_FILE = 103, ///< File name 204 /// Line number, reformatted as symbol 205 IMAGE_SYM_CLASS_SECTION = 104, 206 IMAGE_SYM_CLASS_WEAK_EXTERNAL = 105, ///< Duplicate tag 207 /// External symbol in dmert public lib 208 IMAGE_SYM_CLASS_CLR_TOKEN = 107 209 }; 210 211 enum SymbolBaseType { 212 IMAGE_SYM_TYPE_NULL = 0, ///< No type information or unknown base type. 213 IMAGE_SYM_TYPE_VOID = 1, ///< Used with void pointers and functions. 214 IMAGE_SYM_TYPE_CHAR = 2, ///< A character (signed byte). 215 IMAGE_SYM_TYPE_SHORT = 3, ///< A 2-byte signed integer. 216 IMAGE_SYM_TYPE_INT = 4, ///< A natural integer type on the target. 217 IMAGE_SYM_TYPE_LONG = 5, ///< A 4-byte signed integer. 218 IMAGE_SYM_TYPE_FLOAT = 6, ///< A 4-byte floating-point number. 219 IMAGE_SYM_TYPE_DOUBLE = 7, ///< An 8-byte floating-point number. 220 IMAGE_SYM_TYPE_STRUCT = 8, ///< A structure. 221 IMAGE_SYM_TYPE_UNION = 9, ///< An union. 222 IMAGE_SYM_TYPE_ENUM = 10, ///< An enumerated type. 223 IMAGE_SYM_TYPE_MOE = 11, ///< A member of enumeration (a specific value). 224 IMAGE_SYM_TYPE_BYTE = 12, ///< A byte; unsigned 1-byte integer. 225 IMAGE_SYM_TYPE_WORD = 13, ///< A word; unsigned 2-byte integer. 226 IMAGE_SYM_TYPE_UINT = 14, ///< An unsigned integer of natural size. 227 IMAGE_SYM_TYPE_DWORD = 15 ///< An unsigned 4-byte integer. 228 }; 229 230 enum SymbolComplexType { 231 IMAGE_SYM_DTYPE_NULL = 0, ///< No complex type; simple scalar variable. 232 IMAGE_SYM_DTYPE_POINTER = 1, ///< A pointer to base type. 233 IMAGE_SYM_DTYPE_FUNCTION = 2, ///< A function that returns a base type. 234 IMAGE_SYM_DTYPE_ARRAY = 3, ///< An array of base type. 235 236 /// Type is formed as (base + (derived << SCT_COMPLEX_TYPE_SHIFT)) 237 SCT_COMPLEX_TYPE_SHIFT = 4 238 }; 239 240 enum AuxSymbolType { 241 IMAGE_AUX_SYMBOL_TYPE_TOKEN_DEF = 1 242 }; 243 244 struct section { 245 char Name[NameSize]; 246 uint32_t VirtualSize; 247 uint32_t VirtualAddress; 248 uint32_t SizeOfRawData; 249 uint32_t PointerToRawData; 250 uint32_t PointerToRelocations; 251 uint32_t PointerToLineNumbers; 252 uint16_t NumberOfRelocations; 253 uint16_t NumberOfLineNumbers; 254 uint32_t Characteristics; 255 }; 256 257 enum SectionCharacteristics : uint32_t { 258 SC_Invalid = 0xffffffff, 259 260 IMAGE_SCN_TYPE_NO_PAD = 0x00000008, 261 IMAGE_SCN_CNT_CODE = 0x00000020, 262 IMAGE_SCN_CNT_INITIALIZED_DATA = 0x00000040, 263 IMAGE_SCN_CNT_UNINITIALIZED_DATA = 0x00000080, 264 IMAGE_SCN_LNK_OTHER = 0x00000100, 265 IMAGE_SCN_LNK_INFO = 0x00000200, 266 IMAGE_SCN_LNK_REMOVE = 0x00000800, 267 IMAGE_SCN_LNK_COMDAT = 0x00001000, 268 IMAGE_SCN_GPREL = 0x00008000, 269 IMAGE_SCN_MEM_PURGEABLE = 0x00020000, 270 IMAGE_SCN_MEM_16BIT = 0x00020000, 271 IMAGE_SCN_MEM_LOCKED = 0x00040000, 272 IMAGE_SCN_MEM_PRELOAD = 0x00080000, 273 IMAGE_SCN_ALIGN_1BYTES = 0x00100000, 274 IMAGE_SCN_ALIGN_2BYTES = 0x00200000, 275 IMAGE_SCN_ALIGN_4BYTES = 0x00300000, 276 IMAGE_SCN_ALIGN_8BYTES = 0x00400000, 277 IMAGE_SCN_ALIGN_16BYTES = 0x00500000, 278 IMAGE_SCN_ALIGN_32BYTES = 0x00600000, 279 IMAGE_SCN_ALIGN_64BYTES = 0x00700000, 280 IMAGE_SCN_ALIGN_128BYTES = 0x00800000, 281 IMAGE_SCN_ALIGN_256BYTES = 0x00900000, 282 IMAGE_SCN_ALIGN_512BYTES = 0x00A00000, 283 IMAGE_SCN_ALIGN_1024BYTES = 0x00B00000, 284 IMAGE_SCN_ALIGN_2048BYTES = 0x00C00000, 285 IMAGE_SCN_ALIGN_4096BYTES = 0x00D00000, 286 IMAGE_SCN_ALIGN_8192BYTES = 0x00E00000, 287 IMAGE_SCN_LNK_NRELOC_OVFL = 0x01000000, 288 IMAGE_SCN_MEM_DISCARDABLE = 0x02000000, 289 IMAGE_SCN_MEM_NOT_CACHED = 0x04000000, 290 IMAGE_SCN_MEM_NOT_PAGED = 0x08000000, 291 IMAGE_SCN_MEM_SHARED = 0x10000000, 292 IMAGE_SCN_MEM_EXECUTE = 0x20000000, 293 IMAGE_SCN_MEM_READ = 0x40000000, 294 IMAGE_SCN_MEM_WRITE = 0x80000000 295 }; 296 297 struct relocation { 298 uint32_t VirtualAddress; 299 uint32_t SymbolTableIndex; 300 uint16_t Type; 301 }; 302 303 enum RelocationTypeI386 { 304 IMAGE_REL_I386_ABSOLUTE = 0x0000, 305 IMAGE_REL_I386_DIR16 = 0x0001, 306 IMAGE_REL_I386_REL16 = 0x0002, 307 IMAGE_REL_I386_DIR32 = 0x0006, 308 IMAGE_REL_I386_DIR32NB = 0x0007, 309 IMAGE_REL_I386_SEG12 = 0x0009, 310 IMAGE_REL_I386_SECTION = 0x000A, 311 IMAGE_REL_I386_SECREL = 0x000B, 312 IMAGE_REL_I386_TOKEN = 0x000C, 313 IMAGE_REL_I386_SECREL7 = 0x000D, 314 IMAGE_REL_I386_REL32 = 0x0014 315 }; 316 317 enum RelocationTypeAMD64 { 318 IMAGE_REL_AMD64_ABSOLUTE = 0x0000, 319 IMAGE_REL_AMD64_ADDR64 = 0x0001, 320 IMAGE_REL_AMD64_ADDR32 = 0x0002, 321 IMAGE_REL_AMD64_ADDR32NB = 0x0003, 322 IMAGE_REL_AMD64_REL32 = 0x0004, 323 IMAGE_REL_AMD64_REL32_1 = 0x0005, 324 IMAGE_REL_AMD64_REL32_2 = 0x0006, 325 IMAGE_REL_AMD64_REL32_3 = 0x0007, 326 IMAGE_REL_AMD64_REL32_4 = 0x0008, 327 IMAGE_REL_AMD64_REL32_5 = 0x0009, 328 IMAGE_REL_AMD64_SECTION = 0x000A, 329 IMAGE_REL_AMD64_SECREL = 0x000B, 330 IMAGE_REL_AMD64_SECREL7 = 0x000C, 331 IMAGE_REL_AMD64_TOKEN = 0x000D, 332 IMAGE_REL_AMD64_SREL32 = 0x000E, 333 IMAGE_REL_AMD64_PAIR = 0x000F, 334 IMAGE_REL_AMD64_SSPAN32 = 0x0010 335 }; 336 337 enum RelocationTypesARM { 338 IMAGE_REL_ARM_ABSOLUTE = 0x0000, 339 IMAGE_REL_ARM_ADDR32 = 0x0001, 340 IMAGE_REL_ARM_ADDR32NB = 0x0002, 341 IMAGE_REL_ARM_BRANCH24 = 0x0003, 342 IMAGE_REL_ARM_BRANCH11 = 0x0004, 343 IMAGE_REL_ARM_TOKEN = 0x0005, 344 IMAGE_REL_ARM_BLX24 = 0x0008, 345 IMAGE_REL_ARM_BLX11 = 0x0009, 346 IMAGE_REL_ARM_SECTION = 0x000E, 347 IMAGE_REL_ARM_SECREL = 0x000F, 348 IMAGE_REL_ARM_MOV32A = 0x0010, 349 IMAGE_REL_ARM_MOV32T = 0x0011, 350 IMAGE_REL_ARM_BRANCH20T = 0x0012, 351 IMAGE_REL_ARM_BRANCH24T = 0x0014, 352 IMAGE_REL_ARM_BLX23T = 0x0015 353 }; 354 355 enum COMDATType { 356 IMAGE_COMDAT_SELECT_NODUPLICATES = 1, 357 IMAGE_COMDAT_SELECT_ANY, 358 IMAGE_COMDAT_SELECT_SAME_SIZE, 359 IMAGE_COMDAT_SELECT_EXACT_MATCH, 360 IMAGE_COMDAT_SELECT_ASSOCIATIVE, 361 IMAGE_COMDAT_SELECT_LARGEST, 362 IMAGE_COMDAT_SELECT_NEWEST 363 }; 364 365 // Auxiliary Symbol Formats 366 struct AuxiliaryFunctionDefinition { 367 uint32_t TagIndex; 368 uint32_t TotalSize; 369 uint32_t PointerToLinenumber; 370 uint32_t PointerToNextFunction; 371 char unused[2]; 372 }; 373 374 struct AuxiliarybfAndefSymbol { 375 uint8_t unused1[4]; 376 uint16_t Linenumber; 377 uint8_t unused2[6]; 378 uint32_t PointerToNextFunction; 379 uint8_t unused3[2]; 380 }; 381 382 struct AuxiliaryWeakExternal { 383 uint32_t TagIndex; 384 uint32_t Characteristics; 385 uint8_t unused[10]; 386 }; 387 388 /// These are not documented in the spec, but are located in WinNT.h. 389 enum WeakExternalCharacteristics { 390 IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY = 1, 391 IMAGE_WEAK_EXTERN_SEARCH_LIBRARY = 2, 392 IMAGE_WEAK_EXTERN_SEARCH_ALIAS = 3 393 }; 394 395 struct AuxiliarySectionDefinition { 396 uint32_t Length; 397 uint16_t NumberOfRelocations; 398 uint16_t NumberOfLinenumbers; 399 uint32_t CheckSum; 400 uint32_t Number; 401 uint8_t Selection; 402 char unused; 403 }; 404 405 struct AuxiliaryCLRToken { 406 uint8_t AuxType; 407 uint8_t unused1; 408 uint32_t SymbolTableIndex; 409 char unused2[12]; 410 }; 411 412 union Auxiliary { 413 AuxiliaryFunctionDefinition FunctionDefinition; 414 AuxiliarybfAndefSymbol bfAndefSymbol; 415 AuxiliaryWeakExternal WeakExternal; 416 AuxiliarySectionDefinition SectionDefinition; 417 }; 418 419 /// @brief The Import Directory Table. 420 /// 421 /// There is a single array of these and one entry per imported DLL. 422 struct ImportDirectoryTableEntry { 423 uint32_t ImportLookupTableRVA; 424 uint32_t TimeDateStamp; 425 uint32_t ForwarderChain; 426 uint32_t NameRVA; 427 uint32_t ImportAddressTableRVA; 428 }; 429 430 /// @brief The PE32 Import Lookup Table. 431 /// 432 /// There is an array of these for each imported DLL. It represents either 433 /// the ordinal to import from the target DLL, or a name to lookup and import 434 /// from the target DLL. 435 /// 436 /// This also happens to be the same format used by the Import Address Table 437 /// when it is initially written out to the image. 438 struct ImportLookupTableEntry32 { 439 uint32_t data; 440 441 /// @brief Is this entry specified by ordinal, or name? isOrdinalImportLookupTableEntry32442 bool isOrdinal() const { return data & 0x80000000; } 443 444 /// @brief Get the ordinal value of this entry. isOrdinal must be true. getOrdinalImportLookupTableEntry32445 uint16_t getOrdinal() const { 446 assert(isOrdinal() && "ILT entry is not an ordinal!"); 447 return data & 0xFFFF; 448 } 449 450 /// @brief Set the ordinal value and set isOrdinal to true. setOrdinalImportLookupTableEntry32451 void setOrdinal(uint16_t o) { 452 data = o; 453 data |= 0x80000000; 454 } 455 456 /// @brief Get the Hint/Name entry RVA. isOrdinal must be false. getHintNameRVAImportLookupTableEntry32457 uint32_t getHintNameRVA() const { 458 assert(!isOrdinal() && "ILT entry is not a Hint/Name RVA!"); 459 return data; 460 } 461 462 /// @brief Set the Hint/Name entry RVA and set isOrdinal to false. setHintNameRVAImportLookupTableEntry32463 void setHintNameRVA(uint32_t rva) { data = rva; } 464 }; 465 466 /// @brief The DOS compatible header at the front of all PEs. 467 struct DOSHeader { 468 uint16_t Magic; 469 uint16_t UsedBytesInTheLastPage; 470 uint16_t FileSizeInPages; 471 uint16_t NumberOfRelocationItems; 472 uint16_t HeaderSizeInParagraphs; 473 uint16_t MinimumExtraParagraphs; 474 uint16_t MaximumExtraParagraphs; 475 uint16_t InitialRelativeSS; 476 uint16_t InitialSP; 477 uint16_t Checksum; 478 uint16_t InitialIP; 479 uint16_t InitialRelativeCS; 480 uint16_t AddressOfRelocationTable; 481 uint16_t OverlayNumber; 482 uint16_t Reserved[4]; 483 uint16_t OEMid; 484 uint16_t OEMinfo; 485 uint16_t Reserved2[10]; 486 uint32_t AddressOfNewExeHeader; 487 }; 488 489 struct PE32Header { 490 enum { 491 PE32 = 0x10b, 492 PE32_PLUS = 0x20b 493 }; 494 495 uint16_t Magic; 496 uint8_t MajorLinkerVersion; 497 uint8_t MinorLinkerVersion; 498 uint32_t SizeOfCode; 499 uint32_t SizeOfInitializedData; 500 uint32_t SizeOfUninitializedData; 501 uint32_t AddressOfEntryPoint; // RVA 502 uint32_t BaseOfCode; // RVA 503 uint32_t BaseOfData; // RVA 504 uint32_t ImageBase; 505 uint32_t SectionAlignment; 506 uint32_t FileAlignment; 507 uint16_t MajorOperatingSystemVersion; 508 uint16_t MinorOperatingSystemVersion; 509 uint16_t MajorImageVersion; 510 uint16_t MinorImageVersion; 511 uint16_t MajorSubsystemVersion; 512 uint16_t MinorSubsystemVersion; 513 uint32_t Win32VersionValue; 514 uint32_t SizeOfImage; 515 uint32_t SizeOfHeaders; 516 uint32_t CheckSum; 517 uint16_t Subsystem; 518 // FIXME: This should be DllCharacteristics to match the COFF spec. 519 uint16_t DLLCharacteristics; 520 uint32_t SizeOfStackReserve; 521 uint32_t SizeOfStackCommit; 522 uint32_t SizeOfHeapReserve; 523 uint32_t SizeOfHeapCommit; 524 uint32_t LoaderFlags; 525 // FIXME: This should be NumberOfRvaAndSizes to match the COFF spec. 526 uint32_t NumberOfRvaAndSize; 527 }; 528 529 struct DataDirectory { 530 uint32_t RelativeVirtualAddress; 531 uint32_t Size; 532 }; 533 534 enum DataDirectoryIndex { 535 EXPORT_TABLE = 0, 536 IMPORT_TABLE, 537 RESOURCE_TABLE, 538 EXCEPTION_TABLE, 539 CERTIFICATE_TABLE, 540 BASE_RELOCATION_TABLE, 541 DEBUG, 542 ARCHITECTURE, 543 GLOBAL_PTR, 544 TLS_TABLE, 545 LOAD_CONFIG_TABLE, 546 BOUND_IMPORT, 547 IAT, 548 DELAY_IMPORT_DESCRIPTOR, 549 CLR_RUNTIME_HEADER, 550 551 NUM_DATA_DIRECTORIES 552 }; 553 554 enum WindowsSubsystem { 555 IMAGE_SUBSYSTEM_UNKNOWN = 0, ///< An unknown subsystem. 556 IMAGE_SUBSYSTEM_NATIVE = 1, ///< Device drivers and native Windows processes 557 IMAGE_SUBSYSTEM_WINDOWS_GUI = 2, ///< The Windows GUI subsystem. 558 IMAGE_SUBSYSTEM_WINDOWS_CUI = 3, ///< The Windows character subsystem. 559 IMAGE_SUBSYSTEM_OS2_CUI = 5, ///< The OS/2 character subsytem. 560 IMAGE_SUBSYSTEM_POSIX_CUI = 7, ///< The POSIX character subsystem. 561 IMAGE_SUBSYSTEM_NATIVE_WINDOWS = 8, ///< Native Windows 9x driver. 562 IMAGE_SUBSYSTEM_WINDOWS_CE_GUI = 9, ///< Windows CE. 563 IMAGE_SUBSYSTEM_EFI_APPLICATION = 10, ///< An EFI application. 564 IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER = 11, ///< An EFI driver with boot 565 /// services. 566 IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER = 12, ///< An EFI driver with run-time 567 /// services. 568 IMAGE_SUBSYSTEM_EFI_ROM = 13, ///< An EFI ROM image. 569 IMAGE_SUBSYSTEM_XBOX = 14, ///< XBOX. 570 IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION = 16 ///< A BCD application. 571 }; 572 573 enum DLLCharacteristics { 574 /// ASLR with 64 bit address space. 575 IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA = 0x0020, 576 /// DLL can be relocated at load time. 577 IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE = 0x0040, 578 /// Code integrity checks are enforced. 579 IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY = 0x0080, 580 ///< Image is NX compatible. 581 IMAGE_DLL_CHARACTERISTICS_NX_COMPAT = 0x0100, 582 /// Isolation aware, but do not isolate the image. 583 IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION = 0x0200, 584 /// Does not use structured exception handling (SEH). No SEH handler may be 585 /// called in this image. 586 IMAGE_DLL_CHARACTERISTICS_NO_SEH = 0x0400, 587 /// Do not bind the image. 588 IMAGE_DLL_CHARACTERISTICS_NO_BIND = 0x0800, 589 ///< Image should execute in an AppContainer. 590 IMAGE_DLL_CHARACTERISTICS_APPCONTAINER = 0x1000, 591 ///< A WDM driver. 592 IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER = 0x2000, 593 ///< Image supports Control Flow Guard. 594 IMAGE_DLL_CHARACTERISTICS_GUARD_CF = 0x4000, 595 /// Terminal Server aware. 596 IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE = 0x8000 597 }; 598 599 enum DebugType { 600 IMAGE_DEBUG_TYPE_UNKNOWN = 0, 601 IMAGE_DEBUG_TYPE_COFF = 1, 602 IMAGE_DEBUG_TYPE_CODEVIEW = 2, 603 IMAGE_DEBUG_TYPE_FPO = 3, 604 IMAGE_DEBUG_TYPE_MISC = 4, 605 IMAGE_DEBUG_TYPE_EXCEPTION = 5, 606 IMAGE_DEBUG_TYPE_FIXUP = 6, 607 IMAGE_DEBUG_TYPE_OMAP_TO_SRC = 7, 608 IMAGE_DEBUG_TYPE_OMAP_FROM_SRC = 8, 609 IMAGE_DEBUG_TYPE_BORLAND = 9, 610 IMAGE_DEBUG_TYPE_CLSID = 11 611 }; 612 613 enum BaseRelocationType { 614 IMAGE_REL_BASED_ABSOLUTE = 0, 615 IMAGE_REL_BASED_HIGH = 1, 616 IMAGE_REL_BASED_LOW = 2, 617 IMAGE_REL_BASED_HIGHLOW = 3, 618 IMAGE_REL_BASED_HIGHADJ = 4, 619 IMAGE_REL_BASED_MIPS_JMPADDR = 5, 620 IMAGE_REL_BASED_ARM_MOV32A = 5, 621 IMAGE_REL_BASED_ARM_MOV32T = 7, 622 IMAGE_REL_BASED_MIPS_JMPADDR16 = 9, 623 IMAGE_REL_BASED_DIR64 = 10 624 }; 625 626 enum ImportType { 627 IMPORT_CODE = 0, 628 IMPORT_DATA = 1, 629 IMPORT_CONST = 2 630 }; 631 632 enum ImportNameType { 633 /// Import is by ordinal. This indicates that the value in the Ordinal/Hint 634 /// field of the import header is the import's ordinal. If this constant is 635 /// not specified, then the Ordinal/Hint field should always be interpreted 636 /// as the import's hint. 637 IMPORT_ORDINAL = 0, 638 /// The import name is identical to the public symbol name 639 IMPORT_NAME = 1, 640 /// The import name is the public symbol name, but skipping the leading ?, 641 /// @, or optionally _. 642 IMPORT_NAME_NOPREFIX = 2, 643 /// The import name is the public symbol name, but skipping the leading ?, 644 /// @, or optionally _, and truncating at the first @. 645 IMPORT_NAME_UNDECORATE = 3 646 }; 647 648 struct ImportHeader { 649 uint16_t Sig1; ///< Must be IMAGE_FILE_MACHINE_UNKNOWN (0). 650 uint16_t Sig2; ///< Must be 0xFFFF. 651 uint16_t Version; 652 uint16_t Machine; 653 uint32_t TimeDateStamp; 654 uint32_t SizeOfData; 655 uint16_t OrdinalHint; 656 uint16_t TypeInfo; 657 getTypeImportHeader658 ImportType getType() const { 659 return static_cast<ImportType>(TypeInfo & 0x3); 660 } 661 getNameTypeImportHeader662 ImportNameType getNameType() const { 663 return static_cast<ImportNameType>((TypeInfo & 0x1C) >> 3); 664 } 665 }; 666 667 enum CodeViewIdentifiers { 668 DEBUG_SECTION_MAGIC = 0x4, 669 DEBUG_SYMBOL_SUBSECTION = 0xF1, 670 DEBUG_LINE_TABLE_SUBSECTION = 0xF2, 671 DEBUG_STRING_TABLE_SUBSECTION = 0xF3, 672 DEBUG_INDEX_SUBSECTION = 0xF4, 673 674 // Symbol subsections are split into records of different types. 675 DEBUG_SYMBOL_TYPE_PROC_START = 0x1147, 676 DEBUG_SYMBOL_TYPE_PROC_END = 0x114F 677 }; 678 isReservedSectionNumber(int32_t SectionNumber)679 inline bool isReservedSectionNumber(int32_t SectionNumber) { 680 return SectionNumber <= 0; 681 } 682 683 } // End namespace COFF. 684 } // End namespace llvm. 685 686 #endif 687