sim_do_command (args);
error ("Not connected to the simulator target"); }  sim_do_command (gdbsim_desc, args);   registers_changed ();
simulator_command (args, from_tty)     char *args;     int from_tty;{  /* The user may give a command before the simulator is opened, so     ensure that the callbacks have been set up.  */  sim_set_callbacks (&default_callback);  default_callback.init (&default_callback);  sim_do_command (args);}