static void HandleArgs1(Vm vm)
{
if (vm.stack.TopIsReturnAddress ()) {
vm.currentEnvironment.Frame.Values [0] = vm.stack.UnderTopOne ();
vm.stack.UnderPopOneAndCopyTop ();
} else {
vm.currentEnvironment.Frame.Values [0] = vm.stack.PopTop ();
}
vm.programCounter++;
}