patterns/coff: Added COFF pattern

README.md

@@ -59,6 +59,7 @@ Hex patterns, include patterns and magic files for the use with the ImHex Hex Ed
 | WAD | | [`patterns/wad.hexpat`](patterns/wad.hexpat) | DOOM WAD Archive |
 | GIF | `image/gif` | [`patterns/gif.hexpat`](patterns/gif.hexpat) | GIF image files |
 | ZSTD | `application/zstd` | [`patterns/zstd.hexpat`](patterns/zstd.hexpat) | Zstandard compressed data format |
+| COFF | `application/x-coff` | [`patterns/coff.hexpat`](patterns/coff.hexpat) | Common Object File Format (COFF) executable |
 
 ### Scripts
 

patterns/coff.hexpat

@@ -0,0 +1,209 @@
+#pragma MIME application/x-coff
+
+#include <type/time.pat>
+#include <type/size.pat>
+
+enum Machine : u16 {
+    Unknown     = 0x0000,
+    AM33        = 0x01D3,
+    AMD64       = 0x8664,
+    ARM         = 0x01C0,
+    ARM64       = 0xAA64,
+    ARMNT       = 0x01C4,
+    EBC         = 0x0EBC,
+    I386        = 0x014C,
+    IA64        = 0x0200,
+    LOONGARCH32 = 0x6232,
+    LOONGARCH64 = 0x6264,
+    M32R        = 0x9041,
+    MIPS16      = 0x0226,
+    MIPSFPU     = 0x0366,
+    MIPSFPU16   = 0x0466,
+    POWERPC     = 0x01F0,
+    POWERPCFP   = 0x01F0,
+    R4000       = 0x0166,
+    RISCV32     = 0x5032,
+    RISCV64     = 0x5064,
+    RISCV128    = 0x5128,
+    SH3         = 0x01A2,
+    SH3DSP      = 0x01A3,
+    SH4         = 0x01A6,
+    SH5         = 0x01A8,
+    THUMB       = 0x01C2,
+    WCEMIPSV2   = 0x0169
+};
+
+bitfield Characteristics {
+    relocsStripped          : 1;
+    executableImage         : 1;
+    lineNumsStripped        : 1;
+    localSymsStripped       : 1;
+    aggressiveWsTrim        : 1;
+    largeAddressAware       : 1;
+    padding                 : 1;
+    bytesReversedLo         : 1;
+    _32BitMachine           : 1;
+    debugStripped           : 1;
+    removableRunFromSwap    : 1;
+    netRunFromSwap          : 1;
+    system                  : 1;
+    dll                     : 1;
+    upSystemOnly            : 1;
+    bytesReversedHi         : 1;
+} [[right_to_left]];
+
+enum Type : u16 {
+    Null    = 0,
+    Void    = 1,
+    Char    = 2,
+    Short   = 3,
+    Int     = 4,
+    Long    = 5,
+    Float   = 6,
+    Double  = 7,
+    Struct  = 8,
+    Union   = 9,
+    Enum    = 10,
+    MOE     = 11,
+    Byte    = 12,
+    Word    = 13,
+    UInt    = 14,
+    DWord   = 15
+};
+
+enum StorageClass : u8 {
+    EndOfFunction   = 0xFF,
+    Null            = 0,
+    Automatic       = 1,
+    External        = 2,
+    Static          = 3,
+    Register        = 4,
+    ExternalDef     = 5,
+    Label           = 6,
+    UndefinedLabel  = 7,
+    MemberOfStruct  = 8,
+    Argument        = 9,
+    StructTag       = 10,
+    MemberOfUnion   = 11,
+    UnionTag        = 12,
+    TypeDefinition  = 13,
+    UndefinedStatic = 14,
+    EnumTag         = 15,
+    MemberOfEnum    = 16,
+    RegisterParam   = 17,
+    BitField        = 18,
+    Block           = 100,
+    Function        = 101,
+    EndOfStruct     = 102,
+    File            = 103,
+    Section         = 104,
+    WeakExternal    = 105,
+    CLRToken        = 107
+};
+
+struct AuxSymbol {
+    u8 data[18];
+};
+
+u32 countedSymbols = 0;
+struct SymbolTable {
+    char name[8];
+    u32 value;
+    u16 sectionNumber;
+    Type type;
+    StorageClass storageClass;
+    u8 numberOfAuxSymbols;
+
+    countedSymbols += 1 + numberOfAuxSymbols;
+
+    AuxSymbol auxSymbols[numberOfAuxSymbols];
+
+    if (countedSymbols >= parent.header.numberOfSymbols)
+        break;
+};
+
+struct String {
+    char value[];
+};
+
+struct StringTable {
+    u32 size;
+    String strings[while($ < addressof(size) + size)];
+};
+
+bitfield SectionFlags {
+    padding             : 3;
+    typeNoPad           : 1;
+    padding             : 1;
+    cntCode             : 1;
+    initializedData     : 1;
+    uninitializedData   : 1;
+    lnkOther            : 1;
+    lnkInfo             : 1;
+    padding             : 1;
+    lnkRemove           : 1;
+    lnkCOMDAT           : 1;
+    padding             : 2;
+    gprel               : 1;
+    padding             : 1;
+    memPurgeable        : 1;
+    memLocked           : 1;
+    memPreload          : 1;
+    alignment           : 4 [[format("format_alignment")]];
+    lnkNrelocOvfl       : 1;
+    memDiscardable      : 1;
+    memNotCached        : 1;
+    memNotPaged         : 1;
+    memShared           : 1;
+    memExecute          : 1;
+    memRead             : 1;
+    memWrite            : 1;
+} [[right_to_left]];
+
+fn format_alignment(u8 alignment) {
+    return 1 << alignment;
+};
+
+struct Relocations {
+    u32 virtualAddress;
+    u32 symbolTableIndex;
+    Type type;
+};
+
+struct Section {
+    char name[8];
+    type::Size<u32> virtualSize;
+    u32 virtualAddress;
+    type::Size<u32> sizeOfRawData;
+    u32 pointerToRawData;
+    u32 pointerToRelocations;
+    u32 pointerToLineNumbers;
+    u16 numberOfRelocations;
+    u16 numberOfLineNumbers;
+    SectionFlags characteristics;
+
+    u8 rawData[sizeOfRawData] @ pointerToRawData [[sealed]];
+    Relocations relocations[numberOfRelocations] @ pointerToRelocations;
+};
+
+struct Header {
+    Machine machine;
+    u16 numberOfSections;
+    type::time32_t timeDateStamp;
+    u32 pointerToSymbolTable;
+    u32 numberOfSymbols;
+    u16 sizeOfOptionalHeader;
+    Characteristics characteristics;
+};
+
+
+struct COFF {
+    Header header;
+
+    Section sectionTable[header.numberOfSections];
+
+    SymbolTable symbolTable[header.numberOfSymbols] @ header.pointerToSymbolTable;
+    StringTable stringTable @ addressof(symbolTable) + sizeof(symbolTable);
+};
+
+COFF coff @ 0x00;