1 /* Hardware event manager.
2 Copyright (C) 1998, 2007, 2008, 2009, 2010, 2011
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
6 This file is part of GDB, the GNU debugger.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "sim-events.h"
28 /* The hw-events object is implemented using sim-events */
34 hw_event_callback *callback;
36 struct hw_event_data *entry;
41 struct hw_event event;
42 struct hw_event_data *next;
46 create_hw_event_data (struct hw *me)
48 if (me->events_of_hw != NULL)
49 hw_abort (me, "stray events");
54 delete_hw_event_data (struct hw *me)
56 /* Remove the scheduled event. */
57 while (me->events_of_hw)
58 hw_event_queue_deschedule (me, &me->events_of_hw->event);
62 /* Pass the H/W event onto the real callback */
65 bounce_hw_event (SIM_DESC sd,
69 struct hw_event_data *entry = (struct hw_event_data *) data;
70 struct hw *me = entry->event.me;
71 void *event_data = entry->event.data;
72 hw_event_callback *callback = entry->event.callback;
73 struct hw_event_data **prev = &me->events_of_hw;
74 while ((*prev) != entry)
75 prev = &(*prev)->next;
76 (*prev) = entry->next;
78 callback (me, event_data); /* may not return */
83 /* Map onto the event functions */
86 hw_event_queue_schedule (struct hw *me,
88 hw_event_callback *callback,
91 struct hw_event *event;
93 memset (&dummy, 0, sizeof dummy);
94 event = hw_event_queue_schedule_vtracef (me, delta_time, callback, data,
100 hw_event_queue_schedule_tracef (struct hw *me,
102 hw_event_callback *callback,
107 struct hw_event *event;
110 event = hw_event_queue_schedule_vtracef (me, delta_time, callback, data, fmt, ap);
116 hw_event_queue_schedule_vtracef (struct hw *me,
118 hw_event_callback *callback,
123 struct hw_event_data *entry = HW_ZALLOC (me, struct hw_event_data);
124 entry->next = me->events_of_hw;
125 me->events_of_hw = entry;
127 entry->event.entry = entry;
128 entry->event.data = data;
129 entry->event.callback = callback;
130 entry->event.me = me;
131 entry->event.real = sim_events_schedule_vtracef (hw_system (me),
136 return &entry->event;
141 hw_event_queue_deschedule (struct hw *me,
142 struct hw_event *event_to_remove)
144 /* ZAP the event but only if it is still in the event queue. Note
145 that event_to_remove is only de-referenced after its validity has
147 struct hw_event_data **prev;
148 for (prev = &me->events_of_hw;
150 prev = &(*prev)->next)
152 struct hw_event_data *entry = (*prev);
153 if (&entry->event == event_to_remove)
155 sim_events_deschedule (hw_system (me),
157 (*prev) = entry->next;
166 hw_event_queue_time (struct hw *me)
168 return sim_events_time (hw_system (me));
171 /* Returns the time that remains before the event is raised. */
173 hw_event_remain_time (struct hw *me, struct hw_event *event)
177 t = sim_events_remain_time (hw_system (me), event->real);
181 /* Only worry about this compling on ANSI systems.
182 Build with `make test-hw-events' in sim/<cpu> directory*/
185 #include "sim-main.h"
190 test_handler (struct hw *me,
194 if (*n != hw_event_queue_time (me))
203 host_callback *cb = ZALLOC (host_callback);
204 struct sim_state *sd = sim_state_alloc (0, cb);
205 struct hw *me = ZALLOC (struct hw);
206 sim_pre_argv_init (sd, "test-hw-events");
207 sim_post_argv_init (sd);
208 me->system_of_hw = sd;
210 printf ("Create hw-event-data\n");
212 create_hw_alloc_data (me);
213 create_hw_event_data (me);
214 delete_hw_event_data (me);
215 delete_hw_alloc_data (me);
218 printf ("Create hw-events\n");
224 create_hw_alloc_data (me);
225 create_hw_event_data (me);
226 a = hw_event_queue_schedule (me, 0, NULL, NULL);
227 b = hw_event_queue_schedule (me, 1, NULL, NULL);
228 c = hw_event_queue_schedule (me, 2, NULL, NULL);
229 d = hw_event_queue_schedule (me, 1, NULL, NULL);
230 hw_event_queue_deschedule (me, c);
231 hw_event_queue_deschedule (me, b);
232 hw_event_queue_deschedule (me, a);
233 hw_event_queue_deschedule (me, d);
234 c = HW_ZALLOC (me, struct hw_event);
235 hw_event_queue_deschedule (me, b); /* OOPS! */
237 delete_hw_event_data (me);
238 delete_hw_alloc_data (me);
241 printf ("Schedule hw-events\n");
247 e = HW_NZALLOC (me, struct hw_event *, nr);
248 n = HW_NZALLOC (me, int, nr);
249 create_hw_alloc_data (me);
250 create_hw_event_data (me);
251 for (i = 0; i < nr; i++)
254 e[i] = hw_event_queue_schedule (me, i, test_handler, &n[i]);
256 sim_events_preprocess (sd, 1, 1);
257 for (i = 0; i < nr; i++)
259 if (sim_events_tick (sd))
260 sim_events_process (sd);
262 for (i = 0; i < nr; i++)
266 hw_event_queue_deschedule (me, e[i]);
270 delete_hw_event_data (me);
271 delete_hw_alloc_data (me);