LessCursedVM

import signal
import sys
import threading
from cursed_vm import Asm, CursedVm
def main():
 # Build the guest program
 asm = Asm()
 asm.push_string("Hello, World!\n")
 asm.mov_rsi_rsp()
 asm.print_loop(port=0x10)
 # Handle Ctrl+C
 stop = threading.Event()
 signal.signal(signal.SIGINT, lambda *_: stop.set())
 # Run the VM on a background thread
 def vm_thread():
 with CursedVm() as vm:
 vm.load(asm.code())
 vm.run(lambda port, data: (
 sys.stdout.write(chr(data[0])) or sys.stdout.flush()
 if port == 0x10 and len(data) == 1
 else None
 ))
 t = threading.Thread(target=vm_thread, daemon=True)
 t.start()
 stop.wait()
 print("\nBye.")
if __name__ == "__main__":
 main()