path: root/MdePkg/Include/Common/EfiImage.h

/** @file
  EFI image format for PE32 and PE32+. Please note some data structures are 
  different for PE32 and PE32+. EFI_IMAGE_NT_HEADERS32 is for PE32 and 
  EFI_IMAGE_NT_HEADERS64 is for PE32+. 

  This file is coded to the Visual Studio, Microsoft Portable Executable and 
  Common Object File Format Specification, Revision 8.0 - May 16, 2006. 

  Copyright (c) 2006, Intel Corporation                                                         
  All rights reserved. This program and the accompanying materials                          
  are licensed and made available under the terms and conditions of the BSD License         
  which accompanies this distribution.  The full text of the license may be found at        
  http://opensource.org/licenses/bsd-license.php                                            

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

  Module Name:  EfiImage.h

**/

#ifndef __EFI_IMAGE_H__
#define __EFI_IMAGE_H__

//
// PE32+ Subsystem type for EFI images
//
#define EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION         10
#define EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER 11
#define EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER      12
#define EFI_IMAGE_SUBSYSTEM_EFI_EFI_ROM             13

#define EFI_IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER      13


//
// PE32+ Machine type for EFI images
//
#define IMAGE_FILE_MACHINE_I386     0x014c
#define IMAGE_FILE_MACHINE_IA64     0x0200
#define IMAGE_FILE_MACHINE_EBC      0x0EBC
#define IMAGE_FILE_MACHINE_X64      0x8664
//
// Support old names for backward compatible
//
#define EFI_IMAGE_MACHINE_IA32      IMAGE_FILE_MACHINE_I386 
#define EFI_IMAGE_MACHINE_IA64      IMAGE_FILE_MACHINE_IA64  
#define EFI_IMAGE_MACHINE_IPF       IMAGE_FILE_MACHINE_IA64  
#define EFI_IMAGE_MACHINE_EBC       IMAGE_FILE_MACHINE_EBC  
#define EFI_IMAGE_MACHINE_X64       IMAGE_FILE_MACHINE_X64

#define EFI_IMAGE_DOS_SIGNATURE     0x5A4D      // MZ
#define EFI_IMAGE_OS2_SIGNATURE     0x454E      // NE
#define EFI_IMAGE_OS2_SIGNATURE_LE  0x454C      // LE
#define EFI_IMAGE_NT_SIGNATURE      0x00004550  // PE00

///
/// PE images can start with an optional DOS header, so if an image is run
///  under DOS it can print an error message.
///
typedef struct {
  UINT16  e_magic;    // Magic number
  UINT16  e_cblp;     // Bytes on last page of file
  UINT16  e_cp;       // Pages in file
  UINT16  e_crlc;     // Relocations
  UINT16  e_cparhdr;  // Size of header in paragraphs
  UINT16  e_minalloc; // Minimum extra paragraphs needed
  UINT16  e_maxalloc; // Maximum extra paragraphs needed
  UINT16  e_ss;       // Initial (relative) SS value
  UINT16  e_sp;       // Initial SP value
  UINT16  e_csum;     // Checksum
  UINT16  e_ip;       // Initial IP value
  UINT16  e_cs;       // Initial (relative) CS value
  UINT16  e_lfarlc;   // File address of relocation table
  UINT16  e_ovno;     // Overlay number
  UINT16  e_res[4];   // Reserved words
  UINT16  e_oemid;    // OEM identifier (for e_oeminfo)
  UINT16  e_oeminfo;  // OEM information; e_oemid specific
  UINT16  e_res2[10]; // Reserved words
  UINT32  e_lfanew;   // File address of new exe header
} EFI_IMAGE_DOS_HEADER;

///
/// File header format.
///
typedef struct {
  UINT16  Machine;
  UINT16  NumberOfSections;
  UINT32  TimeDateStamp;
  UINT32  PointerToSymbolTable;
  UINT32  NumberOfSymbols;
  UINT16  SizeOfOptionalHeader;
  UINT16  Characteristics;
} EFI_IMAGE_FILE_HEADER;

#define EFI_IMAGE_SIZEOF_FILE_HEADER        20

#define EFI_IMAGE_FILE_RELOCS_STRIPPED      0x0001  // Relocation info stripped from file.
#define EFI_IMAGE_FILE_EXECUTABLE_IMAGE     0x0002  // File is executable  (i.e. no unresolved externel references).
#define EFI_IMAGE_FILE_LINE_NUMS_STRIPPED   0x0004  // Line nunbers stripped from file.
#define EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED  0x0008  // Local symbols stripped from file.
#define EFI_IMAGE_FILE_BYTES_REVERSED_LO    0x0080  // Bytes of machine word are reversed.
#define EFI_IMAGE_FILE_32BIT_MACHINE        0x0100  // 32 bit word machine.
#define EFI_IMAGE_FILE_DEBUG_STRIPPED       0x0200  // Debugging info stripped from file in .DBG file
#define EFI_IMAGE_FILE_SYSTEM               0x1000  // System File.
#define EFI_IMAGE_FILE_DLL                  0x2000  // File is a DLL.
#define EFI_IMAGE_FILE_BYTES_REVERSED_HI    0x8000  // Bytes of machine word are reversed.
#define EFI_IMAGE_FILE_MACHINE_UNKNOWN      0
#define EFI_IMAGE_FILE_MACHINE_I386         0x14c   // Intel 386.
#define EFI_IMAGE_FILE_MACHINE_R3000        0x162   // MIPS* little-endian, 0540 big-endian
#define EFI_IMAGE_FILE_MACHINE_R4000        0x166   // MIPS* little-endian
#define EFI_IMAGE_FILE_MACHINE_ALPHA        0x184   // Alpha_AXP*
#define EFI_IMAGE_FILE_MACHINE_POWERPC      0x1F0   // IBM* PowerPC Little-Endian
#define EFI_IMAGE_FILE_MACHINE_TAHOE        0x7cc   // Intel EM machine
//
// * Other names and brands may be claimed as the property of others.
//

///
/// Directory format.
///
typedef struct {
  UINT32  VirtualAddress;
  UINT32  Size;
} EFI_IMAGE_DATA_DIRECTORY;

#define EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES 16

typedef struct {
  UINT16  Magic;
  UINT8   MajorLinkerVersion;
  UINT8   MinorLinkerVersion;
  UINT32  SizeOfCode;
  UINT32  SizeOfInitializedData;
  UINT32  SizeOfUninitializedData;
  UINT32  AddressOfEntryPoint;
  UINT32  BaseOfCode;
  UINT32  BaseOfData;
  UINT32  BaseOfBss;
  UINT32  GprMask;
  UINT32  CprMask[4];
  UINT32  GpValue;
} EFI_IMAGE_ROM_OPTIONAL_HEADER;

#define EFI_IMAGE_ROM_OPTIONAL_HDR_MAGIC      0x107
#define EFI_IMAGE_SIZEOF_ROM_OPTIONAL_HEADER  sizeof (EFI_IMAGE_ROM_OPTIONAL_HEADER)

typedef struct {
  EFI_IMAGE_FILE_HEADER         FileHeader;
  EFI_IMAGE_ROM_OPTIONAL_HEADER OptionalHeader;
} EFI_IMAGE_ROM_HEADERS;

///
/// @attention
/// EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC means PE32 and 
/// EFI_IMAGE_OPTIONAL_HEADER32 must be used. The data structures only vary
/// after NT additional fields.
///
#define EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC 0x10b

typedef struct {
  //
  // Standard fields.
  //
  UINT16                    Magic;
  UINT8                     MajorLinkerVersion;
  UINT8                     MinorLinkerVersion;
  UINT32                    SizeOfCode;
  UINT32                    SizeOfInitializedData;
  UINT32                    SizeOfUninitializedData;
  UINT32                    AddressOfEntryPoint;
  UINT32                    BaseOfCode;
  UINT32                    BaseOfData;
  //
  // NT additional fields.
  //
  UINT32                    ImageBase;
  UINT32                    SectionAlignment;
  UINT32                    FileAlignment;
  UINT16                    MajorOperatingSystemVersion;
  UINT16                    MinorOperatingSystemVersion;
  UINT16                    MajorImageVersion;
  UINT16                    MinorImageVersion;
  UINT16                    MajorSubsystemVersion;
  UINT16                    MinorSubsystemVersion;
  UINT32                    Win32VersionValue;
  UINT32                    SizeOfImage;
  UINT32                    SizeOfHeaders;
  UINT32                    CheckSum;
  UINT16                    Subsystem;
  UINT16                    DllCharacteristics;
  UINT32                    SizeOfStackReserve;
  UINT32                    SizeOfStackCommit;
  UINT32                    SizeOfHeapReserve;
  UINT32                    SizeOfHeapCommit;
  UINT32                    LoaderFlags;
  UINT32                    NumberOfRvaAndSizes;
  EFI_IMAGE_DATA_DIRECTORY  DataDirectory[EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES];
} EFI_IMAGE_OPTIONAL_HEADER32;

///
/// @attention
/// EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC means PE32+ and 
/// EFI_IMAGE_OPTIONAL_HEADER64 must be used. The data structures only vary
/// after NT additional fields.
///
#define EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC 0x20b

typedef struct {
  //
  // Standard fields.
  //
  UINT16                    Magic;
  UINT8                     MajorLinkerVersion;
  UINT8                     MinorLinkerVersion;
  UINT32                    SizeOfCode;
  UINT32                    SizeOfInitializedData;
  UINT32                    SizeOfUninitializedData;
  UINT32                    AddressOfEntryPoint;
  UINT32                    BaseOfCode;
  //
  // NT additional fields.
  //
  UINT64                    ImageBase;
  UINT32                    SectionAlignment;
  UINT32                    FileAlignment;
  UINT16                    MajorOperatingSystemVersion;
  UINT16                    MinorOperatingSystemVersion;
  UINT16                    MajorImageVersion;
  UINT16                    MinorImageVersion;
  UINT16                    MajorSubsystemVersion;
  UINT16                    MinorSubsystemVersion;
  UINT32                    Win32VersionValue;
  UINT32                    SizeOfImage;
  UINT32                    SizeOfHeaders;
  UINT32                    CheckSum;
  UINT16                    Subsystem;
  UINT16                    DllCharacteristics;
  UINT64                    SizeOfStackReserve;
  UINT64                    SizeOfStackCommit;
  UINT64                    SizeOfHeapReserve;
  UINT64                    SizeOfHeapCommit;
  UINT32                    LoaderFlags;
  UINT32                    NumberOfRvaAndSizes;
  EFI_IMAGE_DATA_DIRECTORY  DataDirectory[EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES];
} EFI_IMAGE_OPTIONAL_HEADER64;


///
/// @attention
/// EFI_IMAGE_NT_HEADERS32 and EFI_IMAGE_HEADERS64 are for use ONLY
/// by tools.  All proper EFI code MUST use EFI_IMAGE_NT_HEADERS ONLY!!!
///
typedef struct {
  UINT32                      Signature;
  EFI_IMAGE_FILE_HEADER       FileHeader;
  EFI_IMAGE_OPTIONAL_HEADER32 OptionalHeader;
} EFI_IMAGE_NT_HEADERS32;

#define EFI_IMAGE_SIZEOF_NT_OPTIONAL32_HEADER sizeof (EFI_IMAGE_NT_HEADERS32)

typedef struct {
  UINT32                      Signature;
  EFI_IMAGE_FILE_HEADER       FileHeader;
  EFI_IMAGE_OPTIONAL_HEADER64 OptionalHeader;
} EFI_IMAGE_NT_HEADERS64;

#define EFI_IMAGE_SIZEOF_NT_OPTIONAL64_HEADER sizeof (EFI_IMAGE_NT_HEADERS64)


//
// Processor specific definition of EFI_IMAGE_OPTIONAL_HEADER so the
// type name EFI_IMAGE_OPTIONAL_HEADER is appropriate to the build.  Same for
// EFI_IMAGE_NT_HEADERS.  These definitions MUST be used by ALL EFI code.
//
#if   defined (MDE_CPU_IA32)

#define EFI_IMAGE_MACHINE_TYPE_SUPPORTED(Machine) \
  (((Machine) == EFI_IMAGE_MACHINE_IA32) || ((Machine) == EFI_IMAGE_MACHINE_EBC))

#define EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED(Machine) ((Machine) == EFI_IMAGE_MACHINE_X64) 

//
// @bug - Remove me when other package updated. 
//
typedef EFI_IMAGE_NT_HEADERS32    EFI_IMAGE_NT_HEADERS;

#elif defined (MDE_CPU_IPF)

#define EFI_IMAGE_MACHINE_TYPE_SUPPORTED(Machine) \
  (((Machine) == EFI_IMAGE_MACHINE_IPF) || ((Machine) == EFI_IMAGE_MACHINE_EBC))

#define EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED(Machine) (FALSE) 

#elif defined (MDE_CPU_X64)

#define EFI_IMAGE_MACHINE_TYPE_SUPPORTED(Machine) \
  (((Machine) == EFI_IMAGE_MACHINE_X64) || ((Machine) == EFI_IMAGE_MACHINE_EBC))

#define EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED(Machine) ((Machine) == EFI_IMAGE_MACHINE_IA32) 

//
// @bug - Remove me when other package updated. 
//
typedef EFI_IMAGE_NT_HEADERS32    EFI_IMAGE_NT_HEADERS;

#elif defined (MDE_CPU_EBC)

//
// This is just to make sure you can cross compile with the EBC compiiler.
// It does not make sense to have a PE loader coded in EBC. You need to 
// understand the basic 
//
#define EFI_IMAGE_MACHINE_TYPE_SUPPORTED(Machine) ((Machine) == EFI_IMAGE_MACHINE_EBC)

#define EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED(Machine) (FALSE) 

#else
#error Unknown Processor Type
#endif


#define EFI_IMAGE_FIRST_SECTION(ntheader) \
    ( \
      (EFI_IMAGE_SECTION_HEADER *) \
        ( \
          (UINT32) ntheader + \
          FIELD_OFFSET (EFI_IMAGE_NT_HEADERS, OptionalHeader) + \
          ((EFI_IMAGE_NT_HEADERS *) (ntheader))->FileHeader.SizeOfOptionalHeader \
        ) \
    )

//
// Subsystem Values
//
#define EFI_IMAGE_SUBSYSTEM_UNKNOWN     0
#define EFI_IMAGE_SUBSYSTEM_NATIVE      1
#define EFI_IMAGE_SUBSYSTEM_WINDOWS_GUI 2
#define EFI_IMAGE_SUBSYSTEM_WINDOWS_CUI 3.
#define EFI_IMAGE_SUBSYSTEM_OS2_CUI     5
#define EFI_IMAGE_SUBSYSTEM_POSIX_CUI   7

//
// Directory Entries
//
#define EFI_IMAGE_DIRECTORY_ENTRY_EXPORT      0
#define EFI_IMAGE_DIRECTORY_ENTRY_IMPORT      1
#define EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE    2
#define EFI_IMAGE_DIRECTORY_ENTRY_EXCEPTION   3
#define EFI_IMAGE_DIRECTORY_ENTRY_SECURITY    4
#define EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC   5
#define EFI_IMAGE_DIRECTORY_ENTRY_DEBUG       6
#define EFI_IMAGE_DIRECTORY_ENTRY_COPYRIGHT   7
#define EFI_IMAGE_DIRECTORY_ENTRY_GLOBALPTR   8
#define EFI_IMAGE_DIRECTORY_ENTRY_TLS         9
#define EFI_IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG 10

//
// Section header format.
//
#define EFI_IMAGE_SIZEOF_SHORT_NAME 8

typedef struct {
  UINT8 Name[EFI_IMAGE_SIZEOF_SHORT_NAME];
  union {
    UINT32  PhysicalAddress;
    UINT32  VirtualSize;
  } Misc;
  UINT32  VirtualAddress;
  UINT32  SizeOfRawData;
  UINT32  PointerToRawData;
  UINT32  PointerToRelocations;
  UINT32  PointerToLinenumbers;
  UINT16  NumberOfRelocations;
  UINT16  NumberOfLinenumbers;
  UINT32  Characteristics;
} EFI_IMAGE_SECTION_HEADER;

#define EFI_IMAGE_SIZEOF_SECTION_HEADER       40

#define EFI_IMAGE_SCN_TYPE_NO_PAD             0x00000008  // Reserved.
#define EFI_IMAGE_SCN_CNT_CODE                0x00000020
#define EFI_IMAGE_SCN_CNT_INITIALIZED_DATA    0x00000040
#define EFI_IMAGE_SCN_CNT_UNINITIALIZED_DATA  0x00000080

#define EFI_IMAGE_SCN_LNK_OTHER               0x00000100  // Reserved.
#define EFI_IMAGE_SCN_LNK_INFO                0x00000200  // Section contains comments or some other type of information.
#define EFI_IMAGE_SCN_LNK_REMOVE              0x00000800  // Section contents will not become part of image.
#define EFI_IMAGE_SCN_LNK_COMDAT              0x00001000

#define EFI_IMAGE_SCN_ALIGN_1BYTES            0x00100000
#define EFI_IMAGE_SCN_ALIGN_2BYTES            0x00200000
#define EFI_IMAGE_SCN_ALIGN_4BYTES            0x00300000
#define EFI_IMAGE_SCN_ALIGN_8BYTES            0x00400000
#define EFI_IMAGE_SCN_ALIGN_16BYTES           0x00500000
#define EFI_IMAGE_SCN_ALIGN_32BYTES           0x00600000
#define EFI_IMAGE_SCN_ALIGN_64BYTES           0x00700000

#define EFI_IMAGE_SCN_MEM_DISCARDABLE         0x02000000
#define EFI_IMAGE_SCN_MEM_NOT_CACHED          0x04000000
#define EFI_IMAGE_SCN_MEM_NOT_PAGED           0x08000000
#define EFI_IMAGE_SCN_MEM_SHARED              0x10000000
#define EFI_IMAGE_SCN_MEM_EXECUTE             0x20000000
#define EFI_IMAGE_SCN_MEM_READ                0x40000000
#define EFI_IMAGE_SCN_MEM_WRITE               0x80000000

///
/// Symbol format.
///
#define EFI_IMAGE_SIZEOF_SYMBOL 18

//
// Section values.
//
// Symbols have a section number of the section in which they are
// defined. Otherwise, section numbers have the following meanings:
//
#define EFI_IMAGE_SYM_UNDEFINED (UINT16) 0  // Symbol is undefined or is common.
#define EFI_IMAGE_SYM_ABSOLUTE  (UINT16) -1 // Symbol is an absolute value.
#define EFI_IMAGE_SYM_DEBUG     (UINT16) -2 // Symbol is a special debug item.
//
// Type (fundamental) values.
//
#define EFI_IMAGE_SYM_TYPE_NULL   0   // no type.
#define EFI_IMAGE_SYM_TYPE_VOID   1   //
#define EFI_IMAGE_SYM_TYPE_CHAR   2   // type character.
#define EFI_IMAGE_SYM_TYPE_SHORT  3   // type short integer.
#define EFI_IMAGE_SYM_TYPE_INT    4
#define EFI_IMAGE_SYM_TYPE_LONG   5
#define EFI_IMAGE_SYM_TYPE_FLOAT  6
#define EFI_IMAGE_SYM_TYPE_DOUBLE 7
#define EFI_IMAGE_SYM_TYPE_STRUCT 8
#define EFI_IMAGE_SYM_TYPE_UNION  9
#define EFI_IMAGE_SYM_TYPE_ENUM   10  // enumeration.
#define EFI_IMAGE_SYM_TYPE_MOE    11  // member of enumeration.
#define EFI_IMAGE_SYM_TYPE_BYTE   12
#define EFI_IMAGE_SYM_TYPE_WORD   13
#define EFI_IMAGE_SYM_TYPE_UINT   14
#define EFI_IMAGE_SYM_TYPE_DWORD  15

//
// Type (derived) values.
//
#define EFI_IMAGE_SYM_DTYPE_NULL      0 // no derived type.
#define EFI_IMAGE_SYM_DTYPE_POINTER   1
#define EFI_IMAGE_SYM_DTYPE_FUNCTION  2
#define EFI_IMAGE_SYM_DTYPE_ARRAY     3

//
// Storage classes.
//
#define EFI_IMAGE_SYM_CLASS_END_OF_FUNCTION   (UINT8) -1
#define EFI_IMAGE_SYM_CLASS_NULL              0
#define EFI_IMAGE_SYM_CLASS_AUTOMATIC         1
#define EFI_IMAGE_SYM_CLASS_EXTERNAL          2
#define EFI_IMAGE_SYM_CLASS_STATIC            3
#define EFI_IMAGE_SYM_CLASS_REGISTER          4
#define EFI_IMAGE_SYM_CLASS_EXTERNAL_DEF      5
#define EFI_IMAGE_SYM_CLASS_LABEL             6
#define EFI_IMAGE_SYM_CLASS_UNDEFINED_LABEL   7
#define EFI_IMAGE_SYM_CLASS_MEMBER_OF_STRUCT  8
#define EFI_IMAGE_SYM_CLASS_ARGUMENT          9
#define EFI_IMAGE_SYM_CLASS_STRUCT_TAG        10
#define EFI_IMAGE_SYM_CLASS_MEMBER_OF_UNION   11
#define EFI_IMAGE_SYM_CLASS_UNION_TAG         12
#define EFI_IMAGE_SYM_CLASS_TYPE_DEFINITION   13
#define EFI_IMAGE_SYM_CLASS_UNDEFINED_STATIC  14
#define EFI_IMAGE_SYM_CLASS_ENUM_TAG          15
#define EFI_IMAGE_SYM_CLASS_MEMBER_OF_ENUM    16
#define EFI_IMAGE_SYM_CLASS_REGISTER_PARAM    17
#define EFI_IMAGE_SYM_CLASS_BIT_FIELD         18
#define EFI_IMAGE_SYM_CLASS_BLOCK             100
#define EFI_IMAGE_SYM_CLASS_FUNCTION          101
#define EFI_IMAGE_SYM_CLASS_END_OF_STRUCT     102
#define EFI_IMAGE_SYM_CLASS_FILE              103
#define EFI_IMAGE_SYM_CLASS_SECTION           104
#define EFI_IMAGE_SYM_CLASS_WEAK_EXTERNAL     105

//
// type packing constants
//
#define EFI_IMAGE_N_BTMASK  017
#define EFI_IMAGE_N_TMASK   060
#define EFI_IMAGE_N_TMASK1  0300
#define EFI_IMAGE_N_TMASK2  0360
#define EFI_IMAGE_N_BTSHFT  4
#define EFI_IMAGE_N_TSHIFT  2

//
// Communal selection types.
//
#define EFI_IMAGE_COMDAT_SELECT_NODUPLICATES    1
#define EFI_IMAGE_COMDAT_SELECT_ANY             2
#define EFI_IMAGE_COMDAT_SELECT_SAME_SIZE       3
#define EFI_IMAGE_COMDAT_SELECT_EXACT_MATCH     4
#define EFI_IMAGE_COMDAT_SELECT_ASSOCIATIVE     5

#define EFI_IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY  1
#define EFI_IMAGE_WEAK_EXTERN_SEARCH_LIBRARY    2
#define EFI_IMAGE_WEAK_EXTERN_SEARCH_ALIAS      3

///
/// Relocation format.
///
typedef struct {
  UINT32  VirtualAddress;
  UINT32  SymbolTableIndex;
  UINT16  Type;
} EFI_IMAGE_RELOCATION;

#define EFI_IMAGE_SIZEOF_RELOCATION 10

//
// I386 relocation types.
//
#define EFI_IMAGE_REL_I386_ABSOLUTE 0x0000   // Reference is absolute, no relocation is necessary
#define EFI_IMAGE_REL_I386_DIR16    0x0001  // Direct 16-bit reference to the symbols virtual address
#define EFI_IMAGE_REL_I386_REL16    0x0002  // PC-relative 16-bit reference to the symbols virtual address
#define EFI_IMAGE_REL_I386_DIR32    0x0006  // Direct 32-bit reference to the symbols virtual address
#define EFI_IMAGE_REL_I386_DIR32NB  0x0007  // Direct 32-bit reference to the symbols virtual address, base not included
#define EFI_IMAGE_REL_I386_SEG12    0x0009 // Direct 16-bit reference to the segment-selector bits of a 32-bit virtual address
#define EFI_IMAGE_REL_I386_SECTION  0x001a
#define EFI_IMAGE_REL_I386_SECREL   0x000b
#define EFI_IMAGE_REL_I386_REL32    0x0014 // PC-relative 32-bit reference to the symbols virtual address

//
// x64 processor relocation types.
//
#define IMAGE_REL_AMD64_ABSOLUTE	0x0000
#define IMAGE_REL_AMD64_ADDR64	  0x0001
#define IMAGE_REL_AMD64_ADDR32	  0x0002
#define IMAGE_REL_AMD64_ADDR32NB	0x0003
#define IMAGE_REL_AMD64_REL32	    0x0004
#define IMAGE_REL_AMD64_REL32_1	  0x0005
#define IMAGE_REL_AMD64_REL32_2	  0x0006
#define IMAGE_REL_AMD64_REL32_3	  0x0007
#define IMAGE_REL_AMD64_REL32_4	  0x0008
#define IMAGE_REL_AMD64_REL32_5	  0x0009
#define IMAGE_REL_AMD64_SECTION	  0x000A
#define IMAGE_REL_AMD64_SECREL	  0x000B
#define IMAGE_REL_AMD64_SECREL7	  0x000C
#define IMAGE_REL_AMD64_TOKEN	    0x000D
#define IMAGE_REL_AMD64_SREL32	  0x000E
#define IMAGE_REL_AMD64_PAIR	    0x000F
#define IMAGE_REL_AMD64_SSPAN32	  0x0010

///
/// Based relocation format.
///
typedef struct {
  UINT32  VirtualAddress;
  UINT32  SizeOfBlock;
} EFI_IMAGE_BASE_RELOCATION;

#define EFI_IMAGE_SIZEOF_BASE_RELOCATION  8

//
// Based relocation types.
//
#define EFI_IMAGE_REL_BASED_ABSOLUTE      0
#define EFI_IMAGE_REL_BASED_HIGH          1
#define EFI_IMAGE_REL_BASED_LOW           2
#define EFI_IMAGE_REL_BASED_HIGHLOW       3
#define EFI_IMAGE_REL_BASED_HIGHADJ       4
#define EFI_IMAGE_REL_BASED_MIPS_JMPADDR  5
#define EFI_IMAGE_REL_BASED_IA64_IMM64    9
#define EFI_IMAGE_REL_BASED_DIR64         10

///
/// Line number format.
///
typedef struct {
  union {
    UINT32  SymbolTableIndex; // Symbol table index of function name if Linenumber is 0.
    UINT32  VirtualAddress;   // Virtual address of line number.
  } Type;
  UINT16  Linenumber;         // Line number.
} EFI_IMAGE_LINENUMBER;

#define EFI_IMAGE_SIZEOF_LINENUMBER 6

//
// Archive format.
//
#define EFI_IMAGE_ARCHIVE_START_SIZE        8
#define EFI_IMAGE_ARCHIVE_START             "!<arch>\n"
#define EFI_IMAGE_ARCHIVE_END               "`\n"
#define EFI_IMAGE_ARCHIVE_PAD               "\n"
#define EFI_IMAGE_ARCHIVE_LINKER_MEMBER     "/               "
#define EFI_IMAGE_ARCHIVE_LONGNAMES_MEMBER  "//              "

typedef struct {
  UINT8 Name[16];     // File member name - `/' terminated.
  UINT8 Date[12];     // File member date - decimal.
  UINT8 UserID[6];    // File member user id - decimal.
  UINT8 GroupID[6];   // File member group id - decimal.
  UINT8 Mode[8];      // File member mode - octal.
  UINT8 Size[10];     // File member size - decimal.
  UINT8 EndHeader[2]; // String to end header.
} EFI_IMAGE_ARCHIVE_MEMBER_HEADER;

#define EFI_IMAGE_SIZEOF_ARCHIVE_MEMBER_HDR 60

//
// DLL support.
//

///
/// DLL Export Format
///
typedef struct {
  UINT32  Characteristics;
  UINT32  TimeDateStamp;
  UINT16  MajorVersion;
  UINT16  MinorVersion;
  UINT32  Name;
  UINT32  Base;
  UINT32  NumberOfFunctions;
  UINT32  NumberOfNames;
  UINT32  AddressOfFunctions;
  UINT32  AddressOfNames;
  UINT32  AddressOfNameOrdinals;
} EFI_IMAGE_EXPORT_DIRECTORY;

///
/// DLL support.
/// Import Format
///
typedef struct {
  UINT16  Hint;
  UINT8   Name[1];
} EFI_IMAGE_IMPORT_BY_NAME;

typedef struct {
  union {
    UINT32                    Function;
    UINT32                    Ordinal;
    EFI_IMAGE_IMPORT_BY_NAME  *AddressOfData;
  } u1;
} EFI_IMAGE_THUNK_DATA;

#define EFI_IMAGE_ORDINAL_FLAG              0x80000000
#define EFI_IMAGE_SNAP_BY_ORDINAL(Ordinal)  ((Ordinal & EFI_IMAGE_ORDINAL_FLAG) != 0)
#define EFI_IMAGE_ORDINAL(Ordinal)          (Ordinal & 0xffff)

typedef struct {
  UINT32                Characteristics;
  UINT32                TimeDateStamp;
  UINT32                ForwarderChain;
  UINT32                Name;
  EFI_IMAGE_THUNK_DATA  *FirstThunk;
} EFI_IMAGE_IMPORT_DESCRIPTOR;

///
/// Debug Format
///
#define EFI_IMAGE_DEBUG_TYPE_CODEVIEW 2

typedef struct {
  UINT32  Characteristics;
  UINT32  TimeDateStamp;
  UINT16  MajorVersion;
  UINT16  MinorVersion;
  UINT32  Type;
  UINT32  SizeOfData;
  UINT32  RVA;
  UINT32  FileOffset;
} EFI_IMAGE_DEBUG_DIRECTORY_ENTRY;

#define CODEVIEW_SIGNATURE_NB10 0x3031424E  // "NB10"
typedef struct {
  UINT32  Signature;                        // "NB10"
  UINT32  Unknown;
  UINT32  Unknown2;
  UINT32  Unknown3;
  //
  // Filename of .PDB goes here
  //
} EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY;

#define CODEVIEW_SIGNATURE_RSDS 0x53445352  // "RSDS"
typedef struct {
  UINT32  Signature;                        // "RSDS"
  UINT32  Unknown;
  UINT32  Unknown2;
  UINT32  Unknown3;
  UINT32  Unknown4;
  UINT32  Unknown5;
  //
  // Filename of .PDB goes here
  //
} EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY;

///
/// Header format for TE images
///
typedef struct {
  UINT16                    Signature;            // signature for TE format = "VZ"
  UINT16                    Machine;              // from the original file header
  UINT8                     NumberOfSections;     // from the original file header
  UINT8                     Subsystem;            // from original optional header
  UINT16                    StrippedSize;         // how many bytes we removed from the header
  UINT32                    AddressOfEntryPoint;  // offset to entry point -- from original optional header
  UINT32                    BaseOfCode;           // from original image -- required for ITP debug
  UINT64                    ImageBase;            // from original file header
  EFI_IMAGE_DATA_DIRECTORY  DataDirectory[2];     // only base relocation and debug directory
} EFI_TE_IMAGE_HEADER;

#define EFI_TE_IMAGE_HEADER_SIGNATURE 0x5A56      // "VZ"

//
// Data directory indexes in our TE image header
//
#define EFI_TE_IMAGE_DIRECTORY_ENTRY_BASERELOC  0
#define EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG      1


//
// Union of PE32, PE32+, and TE headers
//
typedef union {
  EFI_IMAGE_NT_HEADERS32   Pe32;
  EFI_IMAGE_NT_HEADERS64   Pe32Plus;
  EFI_TE_IMAGE_HEADER      Te;
} EFI_IMAGE_OPTIONAL_HEADER_UNION;

typedef union {
  EFI_IMAGE_NT_HEADERS32            *Pe32;
  EFI_IMAGE_NT_HEADERS64            *Pe32Plus;
  EFI_TE_IMAGE_HEADER               *Te;
  EFI_IMAGE_OPTIONAL_HEADER_UNION   *Union;
} EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION;

#endif