Current Path : /usr/src/contrib/llvm/include/llvm/Support/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //usr/src/contrib/llvm/include/llvm/Support/COFF.h |
//===-- llvm/Support/COFF.h -------------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file contains an definitions used in Windows COFF Files. // // Structures and enums defined within this file where created using // information from Microsoft's publicly available PE/COFF format document: // // Microsoft Portable Executable and Common Object File Format Specification // Revision 8.1 - February 15, 2008 // // As of 5/2/2010, hosted by Microsoft at: // http://www.microsoft.com/whdc/system/platform/firmware/pecoff.mspx // //===----------------------------------------------------------------------===// #ifndef LLVM_SUPPORT_WIN_COFF_H #define LLVM_SUPPORT_WIN_COFF_H #include "llvm/Support/DataTypes.h" #include <cassert> #include <cstring> namespace llvm { namespace COFF { // Sizes in bytes of various things in the COFF format. enum { HeaderSize = 20, NameSize = 8, SymbolSize = 18, SectionSize = 40, RelocationSize = 10 }; struct header { uint16_t Machine; uint16_t NumberOfSections; uint32_t TimeDateStamp; uint32_t PointerToSymbolTable; uint32_t NumberOfSymbols; uint16_t SizeOfOptionalHeader; uint16_t Characteristics; }; enum MachineTypes { IMAGE_FILE_MACHINE_UNKNOWN = 0x0, IMAGE_FILE_MACHINE_AM33 = 0x13, IMAGE_FILE_MACHINE_AMD64 = 0x8664, IMAGE_FILE_MACHINE_ARM = 0x1C0, IMAGE_FILE_MACHINE_ARMV7 = 0x1C4, IMAGE_FILE_MACHINE_EBC = 0xEBC, IMAGE_FILE_MACHINE_I386 = 0x14C, IMAGE_FILE_MACHINE_IA64 = 0x200, IMAGE_FILE_MACHINE_M32R = 0x9041, IMAGE_FILE_MACHINE_MIPS16 = 0x266, IMAGE_FILE_MACHINE_MIPSFPU = 0x366, IMAGE_FILE_MACHINE_MIPSFPU16 = 0x466, IMAGE_FILE_MACHINE_POWERPC = 0x1F0, IMAGE_FILE_MACHINE_POWERPCFP = 0x1F1, IMAGE_FILE_MACHINE_R4000 = 0x166, IMAGE_FILE_MACHINE_SH3 = 0x1A2, IMAGE_FILE_MACHINE_SH3DSP = 0x1A3, IMAGE_FILE_MACHINE_SH4 = 0x1A6, IMAGE_FILE_MACHINE_SH5 = 0x1A8, IMAGE_FILE_MACHINE_THUMB = 0x1C2, IMAGE_FILE_MACHINE_WCEMIPSV2 = 0x169 }; enum Characteristics { /// The file does not contain base relocations and must be loaded at its /// preferred base. If this cannot be done, the loader will error. IMAGE_FILE_RELOCS_STRIPPED = 0x0001, /// The file is valid and can be run. IMAGE_FILE_EXECUTABLE_IMAGE = 0x0002, /// COFF line numbers have been stripped. This is deprecated and should be /// 0. IMAGE_FILE_LINE_NUMS_STRIPPED = 0x0004, /// COFF symbol table entries for local symbols have been removed. This is /// deprecated and should be 0. IMAGE_FILE_LOCAL_SYMS_STRIPPED = 0x0008, /// Aggressively trim working set. This is deprecated and must be 0. IMAGE_FILE_AGGRESSIVE_WS_TRIM = 0x0010, /// Image can handle > 2GiB addresses. IMAGE_FILE_LARGE_ADDRESS_AWARE = 0x0020, /// Little endian: the LSB precedes the MSB in memory. This is deprecated /// and should be 0. IMAGE_FILE_BYTES_REVERSED_LO = 0x0080, /// Machine is based on a 32bit word architecture. IMAGE_FILE_32BIT_MACHINE = 0x0100, /// Debugging info has been removed. IMAGE_FILE_DEBUG_STRIPPED = 0x0200, /// If the image is on removable media, fully load it and copy it to swap. IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP = 0x0400, /// If the image is on network media, fully load it and copy it to swap. IMAGE_FILE_NET_RUN_FROM_SWAP = 0x0800, /// The image file is a system file, not a user program. IMAGE_FILE_SYSTEM = 0x1000, /// The image file is a DLL. IMAGE_FILE_DLL = 0x2000, /// This file should only be run on a uniprocessor machine. IMAGE_FILE_UP_SYSTEM_ONLY = 0x4000, /// Big endian: the MSB precedes the LSB in memory. This is deprecated /// and should be 0. IMAGE_FILE_BYTES_REVERSED_HI = 0x8000 }; struct symbol { char Name[NameSize]; uint32_t Value; uint16_t Type; uint8_t StorageClass; uint16_t SectionNumber; uint8_t NumberOfAuxSymbols; }; enum SymbolFlags { SF_TypeMask = 0x0000FFFF, SF_TypeShift = 0, SF_ClassMask = 0x00FF0000, SF_ClassShift = 16, SF_WeakExternal = 0x01000000 }; enum SymbolSectionNumber { IMAGE_SYM_DEBUG = -2, IMAGE_SYM_ABSOLUTE = -1, IMAGE_SYM_UNDEFINED = 0 }; /// Storage class tells where and what the symbol represents enum SymbolStorageClass { IMAGE_SYM_CLASS_END_OF_FUNCTION = -1, ///< Physical end of function IMAGE_SYM_CLASS_NULL = 0, ///< No symbol IMAGE_SYM_CLASS_AUTOMATIC = 1, ///< Stack variable IMAGE_SYM_CLASS_EXTERNAL = 2, ///< External symbol IMAGE_SYM_CLASS_STATIC = 3, ///< Static IMAGE_SYM_CLASS_REGISTER = 4, ///< Register variable IMAGE_SYM_CLASS_EXTERNAL_DEF = 5, ///< External definition IMAGE_SYM_CLASS_LABEL = 6, ///< Label IMAGE_SYM_CLASS_UNDEFINED_LABEL = 7, ///< Undefined label IMAGE_SYM_CLASS_MEMBER_OF_STRUCT = 8, ///< Member of structure IMAGE_SYM_CLASS_ARGUMENT = 9, ///< Function argument IMAGE_SYM_CLASS_STRUCT_TAG = 10, ///< Structure tag IMAGE_SYM_CLASS_MEMBER_OF_UNION = 11, ///< Member of union IMAGE_SYM_CLASS_UNION_TAG = 12, ///< Union tag IMAGE_SYM_CLASS_TYPE_DEFINITION = 13, ///< Type definition IMAGE_SYM_CLASS_UNDEFINED_STATIC = 14, ///< Undefined static IMAGE_SYM_CLASS_ENUM_TAG = 15, ///< Enumeration tag IMAGE_SYM_CLASS_MEMBER_OF_ENUM = 16, ///< Member of enumeration IMAGE_SYM_CLASS_REGISTER_PARAM = 17, ///< Register parameter IMAGE_SYM_CLASS_BIT_FIELD = 18, ///< Bit field /// ".bb" or ".eb" - beginning or end of block IMAGE_SYM_CLASS_BLOCK = 100, /// ".bf" or ".ef" - beginning or end of function IMAGE_SYM_CLASS_FUNCTION = 101, IMAGE_SYM_CLASS_END_OF_STRUCT = 102, ///< End of structure IMAGE_SYM_CLASS_FILE = 103, ///< File name /// Line number, reformatted as symbol IMAGE_SYM_CLASS_SECTION = 104, IMAGE_SYM_CLASS_WEAK_EXTERNAL = 105, ///< Duplicate tag /// External symbol in dmert public lib IMAGE_SYM_CLASS_CLR_TOKEN = 107 }; enum SymbolBaseType { IMAGE_SYM_TYPE_NULL = 0, ///< No type information or unknown base type. IMAGE_SYM_TYPE_VOID = 1, ///< Used with void pointers and functions. IMAGE_SYM_TYPE_CHAR = 2, ///< A character (signed byte). IMAGE_SYM_TYPE_SHORT = 3, ///< A 2-byte signed integer. IMAGE_SYM_TYPE_INT = 4, ///< A natural integer type on the target. IMAGE_SYM_TYPE_LONG = 5, ///< A 4-byte signed integer. IMAGE_SYM_TYPE_FLOAT = 6, ///< A 4-byte floating-point number. IMAGE_SYM_TYPE_DOUBLE = 7, ///< An 8-byte floating-point number. IMAGE_SYM_TYPE_STRUCT = 8, ///< A structure. IMAGE_SYM_TYPE_UNION = 9, ///< An union. IMAGE_SYM_TYPE_ENUM = 10, ///< An enumerated type. IMAGE_SYM_TYPE_MOE = 11, ///< A member of enumeration (a specific value). IMAGE_SYM_TYPE_BYTE = 12, ///< A byte; unsigned 1-byte integer. IMAGE_SYM_TYPE_WORD = 13, ///< A word; unsigned 2-byte integer. IMAGE_SYM_TYPE_UINT = 14, ///< An unsigned integer of natural size. IMAGE_SYM_TYPE_DWORD = 15 ///< An unsigned 4-byte integer. }; enum SymbolComplexType { IMAGE_SYM_DTYPE_NULL = 0, ///< No complex type; simple scalar variable. IMAGE_SYM_DTYPE_POINTER = 1, ///< A pointer to base type. IMAGE_SYM_DTYPE_FUNCTION = 2, ///< A function that returns a base type. IMAGE_SYM_DTYPE_ARRAY = 3, ///< An array of base type. /// Type is formed as (base + (derived << SCT_COMPLEX_TYPE_SHIFT)) SCT_COMPLEX_TYPE_SHIFT = 4 }; struct section { char Name[NameSize]; uint32_t VirtualSize; uint32_t VirtualAddress; uint32_t SizeOfRawData; uint32_t PointerToRawData; uint32_t PointerToRelocations; uint32_t PointerToLineNumbers; uint16_t NumberOfRelocations; uint16_t NumberOfLineNumbers; uint32_t Characteristics; }; enum SectionCharacteristics { IMAGE_SCN_TYPE_NO_PAD = 0x00000008, IMAGE_SCN_CNT_CODE = 0x00000020, IMAGE_SCN_CNT_INITIALIZED_DATA = 0x00000040, IMAGE_SCN_CNT_UNINITIALIZED_DATA = 0x00000080, IMAGE_SCN_LNK_OTHER = 0x00000100, IMAGE_SCN_LNK_INFO = 0x00000200, IMAGE_SCN_LNK_REMOVE = 0x00000800, IMAGE_SCN_LNK_COMDAT = 0x00001000, IMAGE_SCN_GPREL = 0x00008000, IMAGE_SCN_MEM_PURGEABLE = 0x00020000, IMAGE_SCN_MEM_16BIT = 0x00020000, IMAGE_SCN_MEM_LOCKED = 0x00040000, IMAGE_SCN_MEM_PRELOAD = 0x00080000, IMAGE_SCN_ALIGN_1BYTES = 0x00100000, IMAGE_SCN_ALIGN_2BYTES = 0x00200000, IMAGE_SCN_ALIGN_4BYTES = 0x00300000, IMAGE_SCN_ALIGN_8BYTES = 0x00400000, IMAGE_SCN_ALIGN_16BYTES = 0x00500000, IMAGE_SCN_ALIGN_32BYTES = 0x00600000, IMAGE_SCN_ALIGN_64BYTES = 0x00700000, IMAGE_SCN_ALIGN_128BYTES = 0x00800000, IMAGE_SCN_ALIGN_256BYTES = 0x00900000, IMAGE_SCN_ALIGN_512BYTES = 0x00A00000, IMAGE_SCN_ALIGN_1024BYTES = 0x00B00000, IMAGE_SCN_ALIGN_2048BYTES = 0x00C00000, IMAGE_SCN_ALIGN_4096BYTES = 0x00D00000, IMAGE_SCN_ALIGN_8192BYTES = 0x00E00000, IMAGE_SCN_LNK_NRELOC_OVFL = 0x01000000, IMAGE_SCN_MEM_DISCARDABLE = 0x02000000, IMAGE_SCN_MEM_NOT_CACHED = 0x04000000, IMAGE_SCN_MEM_NOT_PAGED = 0x08000000, IMAGE_SCN_MEM_SHARED = 0x10000000, IMAGE_SCN_MEM_EXECUTE = 0x20000000, IMAGE_SCN_MEM_READ = 0x40000000, IMAGE_SCN_MEM_WRITE = 0x80000000 }; struct relocation { uint32_t VirtualAddress; uint32_t SymbolTableIndex; uint16_t Type; }; enum RelocationTypeX86 { IMAGE_REL_I386_ABSOLUTE = 0x0000, IMAGE_REL_I386_DIR16 = 0x0001, IMAGE_REL_I386_REL16 = 0x0002, IMAGE_REL_I386_DIR32 = 0x0006, IMAGE_REL_I386_DIR32NB = 0x0007, IMAGE_REL_I386_SEG12 = 0x0009, IMAGE_REL_I386_SECTION = 0x000A, IMAGE_REL_I386_SECREL = 0x000B, IMAGE_REL_I386_TOKEN = 0x000C, IMAGE_REL_I386_SECREL7 = 0x000D, IMAGE_REL_I386_REL32 = 0x0014, IMAGE_REL_AMD64_ABSOLUTE = 0x0000, IMAGE_REL_AMD64_ADDR64 = 0x0001, IMAGE_REL_AMD64_ADDR32 = 0x0002, IMAGE_REL_AMD64_ADDR32NB = 0x0003, IMAGE_REL_AMD64_REL32 = 0x0004, IMAGE_REL_AMD64_REL32_1 = 0x0005, IMAGE_REL_AMD64_REL32_2 = 0x0006, IMAGE_REL_AMD64_REL32_3 = 0x0007, IMAGE_REL_AMD64_REL32_4 = 0x0008, IMAGE_REL_AMD64_REL32_5 = 0x0009, IMAGE_REL_AMD64_SECTION = 0x000A, IMAGE_REL_AMD64_SECREL = 0x000B, IMAGE_REL_AMD64_SECREL7 = 0x000C, IMAGE_REL_AMD64_TOKEN = 0x000D, IMAGE_REL_AMD64_SREL32 = 0x000E, IMAGE_REL_AMD64_PAIR = 0x000F, IMAGE_REL_AMD64_SSPAN32 = 0x0010 }; enum RelocationTypesARM { IMAGE_REL_ARM_ABSOLUTE = 0x0000, IMAGE_REL_ARM_ADDR32 = 0x0001, IMAGE_REL_ARM_ADDR32NB = 0x0002, IMAGE_REL_ARM_BRANCH24 = 0x0003, IMAGE_REL_ARM_BRANCH11 = 0x0004, IMAGE_REL_ARM_TOKEN = 0x0005, IMAGE_REL_ARM_BLX24 = 0x0008, IMAGE_REL_ARM_BLX11 = 0x0009, IMAGE_REL_ARM_SECTION = 0x000E, IMAGE_REL_ARM_SECREL = 0x000F, IMAGE_REL_ARM_MOV32A = 0x0010, IMAGE_REL_ARM_MOV32T = 0x0011, IMAGE_REL_ARM_BRANCH20T = 0x0012, IMAGE_REL_ARM_BRANCH24T = 0x0014, IMAGE_REL_ARM_BLX23T = 0x0015 }; enum COMDATType { IMAGE_COMDAT_SELECT_NODUPLICATES = 1, IMAGE_COMDAT_SELECT_ANY, IMAGE_COMDAT_SELECT_SAME_SIZE, IMAGE_COMDAT_SELECT_EXACT_MATCH, IMAGE_COMDAT_SELECT_ASSOCIATIVE, IMAGE_COMDAT_SELECT_LARGEST }; // Auxiliary Symbol Formats struct AuxiliaryFunctionDefinition { uint32_t TagIndex; uint32_t TotalSize; uint32_t PointerToLinenumber; uint32_t PointerToNextFunction; uint8_t unused[2]; }; struct AuxiliarybfAndefSymbol { uint8_t unused1[4]; uint16_t Linenumber; uint8_t unused2[6]; uint32_t PointerToNextFunction; uint8_t unused3[2]; }; struct AuxiliaryWeakExternal { uint32_t TagIndex; uint32_t Characteristics; uint8_t unused[10]; }; /// These are not documented in the spec, but are located in WinNT.h. enum WeakExternalCharacteristics { IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY = 1, IMAGE_WEAK_EXTERN_SEARCH_LIBRARY = 2, IMAGE_WEAK_EXTERN_SEARCH_ALIAS = 3 }; struct AuxiliaryFile { uint8_t FileName[18]; }; struct AuxiliarySectionDefinition { uint32_t Length; uint16_t NumberOfRelocations; uint16_t NumberOfLinenumbers; uint32_t CheckSum; uint16_t Number; uint8_t Selection; uint8_t unused[3]; }; union Auxiliary { AuxiliaryFunctionDefinition FunctionDefinition; AuxiliarybfAndefSymbol bfAndefSymbol; AuxiliaryWeakExternal WeakExternal; AuxiliaryFile File; AuxiliarySectionDefinition SectionDefinition; }; /// @brief The Import Directory Table. /// /// There is a single array of these and one entry per imported DLL. struct ImportDirectoryTableEntry { uint32_t ImportLookupTableRVA; uint32_t TimeDateStamp; uint32_t ForwarderChain; uint32_t NameRVA; uint32_t ImportAddressTableRVA; }; /// @brief The PE32 Import Lookup Table. /// /// There is an array of these for each imported DLL. It represents either /// the ordinal to import from the target DLL, or a name to lookup and import /// from the target DLL. /// /// This also happens to be the same format used by the Import Address Table /// when it is initially written out to the image. struct ImportLookupTableEntry32 { uint32_t data; /// @brief Is this entry specified by ordinal, or name? bool isOrdinal() const { return data & 0x80000000; } /// @brief Get the ordinal value of this entry. isOrdinal must be true. uint16_t getOrdinal() const { assert(isOrdinal() && "ILT entry is not an ordinal!"); return data & 0xFFFF; } /// @brief Set the ordinal value and set isOrdinal to true. void setOrdinal(uint16_t o) { data = o; data |= 0x80000000; } /// @brief Get the Hint/Name entry RVA. isOrdinal must be false. uint32_t getHintNameRVA() const { assert(!isOrdinal() && "ILT entry is not a Hint/Name RVA!"); return data; } /// @brief Set the Hint/Name entry RVA and set isOrdinal to false. void setHintNameRVA(uint32_t rva) { data = rva; } }; /// @brief The DOS compatible header at the front of all PEs. struct DOSHeader { uint16_t Magic; uint16_t UsedBytesInTheLastPage; uint16_t FileSizeInPages; uint16_t NumberOfRelocationItems; uint16_t HeaderSizeInParagraphs; uint16_t MinimumExtraParagraphs; uint16_t MaximumExtraParagraphs; uint16_t InitialRelativeSS; uint16_t InitialSP; uint16_t Checksum; uint16_t InitialIP; uint16_t InitialRelativeCS; uint16_t AddressOfRelocationTable; uint16_t OverlayNumber; uint16_t Reserved[4]; uint16_t OEMid; uint16_t OEMinfo; uint16_t Reserved2[10]; uint32_t AddressOfNewExeHeader; }; struct PEHeader { uint32_t Signature; header COFFHeader; uint16_t Magic; uint8_t MajorLinkerVersion; uint8_t MinorLinkerVersion; uint32_t SizeOfCode; uint32_t SizeOfInitializedData; uint32_t SizeOfUninitializedData; uint32_t AddressOfEntryPoint; // RVA uint32_t BaseOfCode; // RVA uint32_t BaseOfData; // RVA uint64_t ImageBase; uint32_t SectionAlignment; uint32_t FileAlignment; uint16_t MajorOperatingSystemVersion; uint16_t MinorOperatingSystemVersion; uint16_t MajorImageVersion; uint16_t MinorImageVersion; uint16_t MajorSubsystemVersion; uint16_t MinorSubsystemVersion; uint32_t Win32VersionValue; uint32_t SizeOfImage; uint32_t SizeOfHeaders; uint32_t CheckSum; uint16_t Subsystem; uint16_t DLLCharacteristics; uint64_t SizeOfStackReserve; uint64_t SizeOfStackCommit; uint64_t SizeOfHeapReserve; uint64_t SizeOfHeapCommit; uint32_t LoaderFlags; uint32_t NumberOfRvaAndSize; }; struct DataDirectory { uint32_t RelativeVirtualAddress; uint32_t Size; }; enum WindowsSubsystem { IMAGE_SUBSYSTEM_UNKNOWN = 0, ///< An unknown subsystem. IMAGE_SUBSYSTEM_NATIVE = 1, ///< Device drivers and native Windows processes IMAGE_SUBSYSTEM_WINDOWS_GUI = 2, ///< The Windows GUI subsystem. IMAGE_SUBSYSTEM_WINDOWS_CUI = 3, ///< The Windows character subsystem. IMAGE_SUBSYSTEM_POSIX_CUI = 7, ///< The POSIX character subsystem. IMAGE_SUBSYSTEM_WINDOWS_CE_GUI = 9, ///< Windows CE. IMAGE_SUBSYSTEM_EFI_APPLICATION = 10, ///< An EFI application. IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER = 11, ///< An EFI driver with boot /// services. IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER = 12, ///< An EFI driver with run-time /// services. IMAGE_SUBSYSTEM_EFI_ROM = 13, ///< An EFI ROM image. IMAGE_SUBSYSTEM_XBOX = 14 ///< XBOX. }; enum DLLCharacteristics { /// DLL can be relocated at load time. IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE = 0x0040, /// Code integrity checks are enforced. IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY = 0x0080, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT = 0x0100, ///< Image is NX compatible. /// Isolation aware, but do not isolate the image. IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION = 0x0200, /// Does not use structured exception handling (SEH). No SEH handler may be /// called in this image. IMAGE_DLL_CHARACTERISTICS_NO_SEH = 0x0400, /// Do not bind the image. IMAGE_DLL_CHARACTERISTICS_NO_BIND = 0x0800, IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER = 0x2000, ///< A WDM driver. /// Terminal Server aware. IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE = 0x8000 }; enum DebugType { IMAGE_DEBUG_TYPE_UNKNOWN = 0, IMAGE_DEBUG_TYPE_COFF = 1, IMAGE_DEBUG_TYPE_CODEVIEW = 2, IMAGE_DEBUG_TYPE_FPO = 3, IMAGE_DEBUG_TYPE_MISC = 4, IMAGE_DEBUG_TYPE_EXCEPTION = 5, IMAGE_DEBUG_TYPE_FIXUP = 6, IMAGE_DEBUG_TYPE_OMAP_TO_SRC = 7, IMAGE_DEBUG_TYPE_OMAP_FROM_SRC = 8, IMAGE_DEBUG_TYPE_BORLAND = 9, IMAGE_DEBUG_TYPE_CLSID = 11 }; enum BaseRelocationType { IMAGE_REL_BASED_ABSOLUTE = 0, IMAGE_REL_BASED_HIGH = 1, IMAGE_REL_BASED_LOW = 2, IMAGE_REL_BASED_HIGHLOW = 3, IMAGE_REL_BASED_HIGHADJ = 4, IMAGE_REL_BASED_MIPS_JMPADDR = 5, IMAGE_REL_BASED_ARM_MOV32A = 5, IMAGE_REL_BASED_ARM_MOV32T = 7, IMAGE_REL_BASED_MIPS_JMPADDR16 = 9, IMAGE_REL_BASED_DIR64 = 10 }; enum ImportType { IMPORT_CODE = 0, IMPORT_DATA = 1, IMPORT_CONST = 2 }; enum ImportNameType { /// Import is by ordinal. This indicates that the value in the Ordinal/Hint /// field of the import header is the import's ordinal. If this constant is /// not specified, then the Ordinal/Hint field should always be interpreted /// as the import's hint. IMPORT_ORDINAL = 0, /// The import name is identical to the public symbol name IMPORT_NAME = 1, /// The import name is the public symbol name, but skipping the leading ?, /// @, or optionally _. IMPORT_NAME_NOPREFIX = 2, /// The import name is the public symbol name, but skipping the leading ?, /// @, or optionally _, and truncating at the first @. IMPORT_NAME_UNDECORATE = 3 }; struct ImportHeader { uint16_t Sig1; ///< Must be IMAGE_FILE_MACHINE_UNKNOWN (0). uint16_t Sig2; ///< Must be 0xFFFF. uint16_t Version; uint16_t Machine; uint32_t TimeDateStamp; uint32_t SizeOfData; uint16_t OrdinalHint; uint16_t TypeInfo; ImportType getType() const { return static_cast<ImportType>(TypeInfo & 0x3); } ImportNameType getNameType() const { return static_cast<ImportNameType>((TypeInfo & 0x1C) >> 3); } }; } // End namespace COFF. } // End namespace llvm. #endif