QMP: Drop DEBUG event

This event has been introduced in the first round of QMP commits,
turns out that it's based on the usage of the EXCP_DEBUG macro,
which has discussable semantics when exposed through QMP.

As libvirt doesn't use this, let's just drop it.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

QMP/qmp-events.txt

@@ -19,12 +19,6 @@ Data: None.
 Description: Issued when the Virtual Machine is stopped.
 Data: None.
 
-4 DEBUG
--------
-
-Description: Issued when the Virtual Machine enters debug mode.
-Data: None.
-
 4 VNC_CONNECTED
 ---------------
 

monitor.c

@@ -399,9 +399,6 @@ void monitor_protocol_event(MonitorEvent event, QObject *data)
     assert(event < QEVENT_MAX);
 
     switch (event) {
-        case QEVENT_DEBUG:
-            event_name = "DEBUG";
-            break;
         case QEVENT_SHUTDOWN:
             event_name = "SHUTDOWN";
             break;

monitor.h

@@ -15,7 +15,6 @@ extern Monitor *cur_mon;
 
 /* QMP events */
 typedef enum MonitorEvent {
-    QEVENT_DEBUG,
     QEVENT_SHUTDOWN,
     QEVENT_RESET,
     QEVENT_POWERDOWN,

vl.c

@@ -4086,7 +4086,6 @@ static void main_loop(void)
         } while (vm_can_run());
 
         if (qemu_debug_requested()) {
-            monitor_protocol_event(QEVENT_DEBUG, NULL);
             vm_stop(EXCP_DEBUG);
         }
         if (qemu_shutdown_requested()) {