Split out hw-event code. Clean up interface. Update all users.

1 files changed, 140 insertions, 0 deletions

diff --git a/sim/common/hw-events.c b/sim/common/hw-events.c
new file mode 100644
index 0000000..ca6d441
--- /dev/null
+++ b/sim/common/hw-events.c
@@ -0,0 +1,140 @@
+/* Hardware event manager.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+
+This file is part of GDB, the GNU debugger.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+
+#include "sim-main.h"
+#include "hw-base.h"
+
+#include "sim-events.h"
+
+
+/* The hw-events object is implemented using sim-events */
+
+struct hw_event {
+  void *data;
+  struct hw *me;
+  hw_event_callback *callback;
+  sim_event *real;
+  struct hw_event_data *entry;
+};
+
+struct hw_event_data {
+  struct hw_event event;
+  struct hw_event_data *next;
+  struct hw_event_data **prev;
+};
+
+void
+create_hw_event_data (struct hw *me)
+{
+  /* NOP */
+}
+
+void
+delete_hw_event_data (struct hw *me)
+{
+  if (me->events_of_hw != NULL)
+    hw_abort (me, "stray events");
+}
+
+
+static void
+delete_hw_event (struct hw *me,
+		 struct hw_event **event)
+{
+  struct hw_event_data *entry = (*event)->entry;
+  *(entry->prev) = entry->next;
+  entry->next->prev = entry->prev;
+  (*event) = NULL;
+}
+
+
+static void
+create_hw_event (struct hw *me,
+		 struct hw_event **event)
+{
+  struct hw_event_data *entry = HW_ZALLOC (me, struct hw_event_data);
+  entry->next = me->events_of_hw;
+  entry->prev = &me->events_of_hw;
+  me->events_of_hw->prev = &entry->next;
+  me->events_of_hw = entry;
+  (*event) = &entry->event;
+}
+
+
+
+/* Pass the H/W event onto the real callback */
+
+static void
+bounce_hw_event (SIM_DESC sd,
+		 void *data)
+{
+  /* save the data */
+  struct hw_event *event = (struct hw_event*)data;
+  struct hw *me = event->me;
+  void *event_data = event->data;
+  hw_event_callback *callback = event->callback;
+  hw_free (me, data);
+  event = NULL;
+  callback (me, event_data);
+}
+
+
+
+/* Map onto the event functions */
+
+struct hw_event *
+hw_event_queue_schedule (struct hw *me,
+			 signed64 delta_time,
+			 hw_event_callback *callback,
+			 void *data)
+{
+  struct hw_event *event;
+  create_hw_event (me, &event);
+  /* fill it in */
+  event->data = data;
+  event->callback = callback;
+  event->me = me;
+  event->real = sim_events_schedule (hw_system (me),
+				     delta_time,
+				     bounce_hw_event,
+				     event);
+  return event;
+}
+
+
+void
+hw_event_queue_deschedule (struct hw *me,
+			   struct hw_event *event_to_remove)
+{
+  /* remove it from the event queue */
+  sim_events_deschedule (hw_system (me),
+			 event_to_remove->real);
+  delete_hw_event (me, &event_to_remove);
+}
+
+
+signed64
+hw_event_queue_time (struct hw *me)
+{
+  return sim_events_time (hw_system (me));
+}
+
+