Header

pub const Header = extern struct {
    /// The number that identifies the type of target machine.
    machine: IMAGE.FILE.MACHINE,

    /// The number of sections. This indicates the size of the section table, which immediately follows the headers.
    number_of_sections: u16,

    /// The low 32 bits of the number of seconds since 00:00 January 1, 1970 (a C run-time time_t value),
    /// which indicates when the file was created.
    time_date_stamp: u32,

    /// The file offset of the COFF symbol table, or zero if no COFF symbol table is present.
    /// This value should be zero for an image because COFF debugging information is deprecated.
    pointer_to_symbol_table: u32,

    /// The number of entries in the symbol table.
    /// This data can be used to locate the string table, which immediately follows the symbol table.
    /// This value should be zero for an image because COFF debugging information is deprecated.
    number_of_symbols: u32,

    /// The size of the optional header, which is required for executable files but not for object files.
    /// This value should be zero for an object file. For a description of the header format, see Optional Header (Image Only).
    size_of_optional_header: u16,

    /// The flags that indicate the attributes of the file.
    flags: Header.Flags,

    pub const Flags = packed struct(u16) {
        /// Image only, Windows CE, and Microsoft Windows NT and later.
        /// This indicates that the file does not contain base relocations
        /// and must therefore be loaded at its preferred base address.
        /// If the base address is not available, the loader reports an error.
        /// The default behavior of the linker is to strip base relocations
        /// from executable (EXE) files.
        RELOCS_STRIPPED: bool = false,

        /// Image only. This indicates that the image file is valid and can be run.
        /// If this flag is not set, it indicates a linker error.
        EXECUTABLE_IMAGE: bool = false,

        /// COFF line numbers have been removed. This flag is deprecated and should be zero.
        LINE_NUMS_STRIPPED: bool = false,

        /// COFF symbol table entries for local symbols have been removed.
        /// This flag is deprecated and should be zero.
        LOCAL_SYMS_STRIPPED: bool = false,

        /// Obsolete. Aggressively trim working set.
        /// This flag is deprecated for Windows 2000 and later and must be zero.
        AGGRESSIVE_WS_TRIM: bool = false,

        /// Application can handle > 2-GB addresses.
        LARGE_ADDRESS_AWARE: bool = false,

        /// This flag is reserved for future use.
        RESERVED: bool = false,

        /// Little endian: the least significant bit (LSB) precedes the
        /// most significant bit (MSB) in memory. This flag is deprecated and should be zero.
        BYTES_REVERSED_LO: bool = false,

        /// Machine is based on a 32-bit-word architecture.
        @"32BIT_MACHINE": bool = false,

        /// Debugging information is removed from the image file.
        DEBUG_STRIPPED: bool = false,

        /// If the image is on removable media, fully load it and copy it to the swap file.
        REMOVABLE_RUN_FROM_SWAP: bool = false,

        /// If the image is on network media, fully load it and copy it to the swap file.
        NET_RUN_FROM_SWAP: bool = false,

        /// The image file is a system file, not a user program.
        SYSTEM: bool = false,

        /// The image file is a dynamic-link library (DLL).
        /// Such files are considered executable files for almost all purposes,
        /// although they cannot be directly run.
        DLL: bool = false,

        /// The file should be run only on a uniprocessor machine.
        UP_SYSTEM_ONLY: bool = false,

        /// Big endian: the MSB precedes the LSB in memory. This flag is deprecated and should be zero.
        BYTES_REVERSED_HI: bool = false,
    };
}