from argparse import ArgumentParser
from vm import VM

def main():
    parser = ArgumentParser(
            prog="DP32-emu",
            description="simple emulator for DP32")
    parser.add_argument(
            "mem_file"
            )
    parser.add_argument(
            "-o",
            "--output",
            help="output memory file of virtual machine",
            default="out.mem"
            )
    args = parser.parse_args()
    with open(args.mem_file, 'rb') as f:
        mem = bytearray(f.read())
    vm = VM(mem)
    vm.run()

    with open(args.output, 'wb') as f:
        f.write(vm.mem)

if __name__ == "__main__":
    main()