OptionalHeader

pub const OptionalHeader = extern struct {
    magic: OptionalHeader.Magic,
    major_linker_version: u8,
    minor_linker_version: u8,
    size_of_code: u32,
    size_of_initialized_data: u32,
    size_of_uninitialized_data: u32,
    address_of_entry_point: u32,
    base_of_code: u32,

    pub const Magic = enum(u16) {
        PE32 = 0x10b,
        @"PE32+" = 0x20b,
        _,
    };

    pub const PE32 = extern struct {
        standard: OptionalHeader,
        base_of_data: u32,
        image_base: u32,
        section_alignment: u32,
        file_alignment: u32,
        major_operating_system_version: u16,
        minor_operating_system_version: u16,
        major_image_version: u16,
        minor_image_version: u16,
        major_subsystem_version: u16,
        minor_subsystem_version: u16,
        win32_version_value: u32,
        size_of_image: u32,
        size_of_headers: u32,
        checksum: u32,
        subsystem: Subsystem,
        dll_flags: DllFlags,
        size_of_stack_reserve: u32,
        size_of_stack_commit: u32,
        size_of_heap_reserve: u32,
        size_of_heap_commit: u32,
        loader_flags: u32,
        number_of_rva_and_sizes: u32,
    };

    pub const @"PE32+" = extern struct {
        standard: OptionalHeader,
        image_base: u64,
        section_alignment: u32,
        file_alignment: u32,
        major_operating_system_version: u16,
        minor_operating_system_version: u16,
        major_image_version: u16,
        minor_image_version: u16,
        major_subsystem_version: u16,
        minor_subsystem_version: u16,
        win32_version_value: u32,
        size_of_image: u32,
        size_of_headers: u32,
        checksum: u32,
        subsystem: Subsystem,
        dll_flags: DllFlags,
        size_of_stack_reserve: u64,
        size_of_stack_commit: u64,
        size_of_heap_reserve: u64,
        size_of_heap_commit: u64,
        loader_flags: u32,
        number_of_rva_and_sizes: u32,
    };
}