diff --git a/monitor.c b/monitor.c
index 549e98b47a99a6f77db9111ec9bcd49f1c29de47..6733022a160e8ead71eecd97847cf731408e98bb 100644
--- a/monitor.c
+++ b/monitor.c
@@ -119,6 +119,12 @@ Monitor *cur_mon = NULL;
 static void monitor_command_cb(Monitor *mon, const char *cmdline,
                                void *opaque);
 
+/* Return true if in control mode, false otherwise */
+static inline int monitor_ctrl_mode(const Monitor *mon)
+{
+    return (mon->flags & MONITOR_USE_CONTROL);
+}
+
 static void monitor_read_command(Monitor *mon, int show_prompt)
 {
     readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
diff --git a/monitor.h b/monitor.h
index c7d2d0bca0a4f8a1326c4419f883df717d161982..6cb1d4b35332c4a9105f1d08d0a43c3617bb2aff 100644
--- a/monitor.h
+++ b/monitor.h
@@ -11,6 +11,7 @@ extern Monitor *cur_mon;
 /* flags for monitor_init */
 #define MONITOR_IS_DEFAULT    0x01
 #define MONITOR_USE_READLINE  0x02
+#define MONITOR_USE_CONTROL   0x04
 
 void monitor_init(CharDriverState *chr, int flags);