C++ (Cpp) switch_to_old_consoleの例

コード例 #1

ファイル: pe_init.c プロジェクト: DJHartley/xnu

int PE_initialize_console( PE_Video * info, int op )
{
    static int   last_console = -1;

    if (info) {
	info->v_offset  = 0;
	info->v_length  = 0;
	info->v_display = GRAPHICS_MODE;
    }

    switch ( op ) {

        case kPEDisableScreen:
            initialize_screen(info, op);
            kprintf("kPEDisableScreen %d\n", last_console);
	    if (!console_is_serial())
		last_console = switch_to_serial_console();
            break;

        case kPEEnableScreen:
            initialize_screen(info, op);
            if (info) PE_state.video = *info;
            kprintf("kPEEnableScreen %d\n", last_console);
            if( last_console != -1)
                switch_to_old_console( last_console);
            break;
	
        case kPEBaseAddressChange:
            if (info) PE_state.video = *info;
            /* fall thru */

        default:
            initialize_screen(info, op);
            break;
    }

    return 0;
}

コード例 #2

ファイル: db_interface.c プロジェクト: OpenDarwin-CVS/SEDarwin

/*
 *  kdb_trap - field a TRACE or BPT trap
 */
void
kdb_trap(
	int			type,
	struct savearea *regs)
{
	boolean_t	trap_from_user;
	int			previous_console_device;
	int			code=0;

	previous_console_device=switch_to_serial_console();

	switch (type) {
	    case T_TRACE:	/* single_step */
	    case T_PROGRAM:	/* breakpoint */
#if 0
	    case T_WATCHPOINT:	/* watchpoint */
#endif
	    case -1:	/* keyboard interrupt */
		break;

	    default:
		if (db_recover) {
		    ppc_nested_saved_state = *regs;
		    db_printf("Caught ");
		    if (type > TRAP_TYPES)
			db_printf("type %d", type);
		    else
			db_printf("%s", trap_type[type]);
		    db_printf(" trap, pc = %x\n",
			      regs->save_srr0);
		    db_error("");
		    /*NOTREACHED*/
		}
		kdbprinttrap(type, code, (int *)&regs->save_srr0, regs->save_r1);
	}

	saved_state[cpu_number()] = regs;

	ppc_last_saved_statep = regs;
	ppc_last_kdb_sp = (unsigned) &type;

	if (!IS_USER_TRAP(regs)) {
		bzero((char *)&ddb_regs, sizeof (ddb_regs));
		ddb_regs = *regs;
		trap_from_user = FALSE;	

	}
	else {
		ddb_regs = *regs;
		trap_from_user = TRUE;
	}

	db_task_trap(type, code, trap_from_user);

	*regs = ddb_regs;

	if ((type == T_PROGRAM) &&
	    (db_get_task_value(regs->save_srr0,
			       BKPT_SIZE,
			       FALSE,
			       db_target_space(current_act(),
					       trap_from_user))
	                      == BKPT_INST))
	    regs->save_srr0 += BKPT_SIZE;

kdb_exit:
	saved_state[cpu_number()] = 0;
	switch_to_old_console(previous_console_device);

}