from . import x86

@"Platform"
def architecture_support():
    """
        Config ISA related features
    """

    @flag
    def arch_x86_32() -> bool:
        return arch.val == "i386"
    
    @flag
    def arch_x86_64() -> bool:
        return arch.val == "x86_64"
    
    @flag
    def arch_x86() -> bool:
        return arch.val in ["x86_64", "i386"]

    @"Architecture"
    def arch() -> "i386" | "x86_64":
        """ 
            Config ISA support 
        """
        _arch = env("ARCH")
        return _arch if _arch else "x86_64"

    @"Base operand size"
    @readonly
    def arch_bits() -> 32 | 64:
        """ 
            Defines the base size of a general register of the 
            current selected ISA.

            This the 'bits' part when we are talking about a CPU
        """

        match arch.val:
            case "i386": 
                return 32
            case "aarch64": 
                return 64
            case "rv64": 
                return 64
            case "x86_64": 
                return 64
            case _:
                return 32