}
}
+/* Controls if async mode is permitted. */
+int target_async_permitted = 0;
+
+/* The set command writes to this variable. If the inferior is
+ executing, linux_nat_async_permitted is *not* updated. */
+static int target_async_permitted_1 = 0;
+
+static void
+set_maintenance_target_async_permitted (char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ if (target_has_execution)
+ {
+ target_async_permitted_1 = target_async_permitted;
+ error (_("Cannot change this setting while the inferior is running."));
+ }
+
+ target_async_permitted = target_async_permitted_1;
+}
+
+static void
+show_maintenance_target_async_permitted (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+ fprintf_filtered (file, _("\
+Controlling the inferior in asynchronous mode is %s.\n"), value);
+}
+
void
initialize_targets (void)
{
_("Print the name of each layer of the internal target stack."),
&maintenanceprintlist);
+ add_setshow_boolean_cmd ("target-async", no_class,
+ &target_async_permitted_1, _("\
+Set whether gdb controls the inferior in asynchronous mode."), _("\
+Show whether gdb controls the inferior in asynchronous mode."), _("\
+Tells gdb whether to control the inferior in asynchronous mode."),
+ set_maintenance_target_async_permitted,
+ show_maintenance_target_async_permitted,
+ &setlist,
+ &showlist);
+
target_dcache = dcache_init ();
}