1 /* Hardware event manager.
2 Copyright (C) 1998 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "sim-events.h"
28 /* The hw-events object is implemented using sim-events */
33 hw_event_callback *callback;
35 struct hw_event_data *entry;
38 struct hw_event_data {
39 struct hw_event event;
40 struct hw_event_data *next;
44 create_hw_event_data (struct hw *me)
46 if (me->events_of_hw != NULL)
47 hw_abort (me, "stray events");
52 delete_hw_event_data (struct hw *me)
54 /* Remove the scheduled event. */
55 while (me->events_of_hw)
56 hw_event_queue_deschedule (me, &me->events_of_hw->event);
60 /* Pass the H/W event onto the real callback */
63 bounce_hw_event (SIM_DESC sd,
67 struct hw_event_data *entry = (struct hw_event_data *) data;
68 struct hw *me = entry->event.me;
69 void *event_data = entry->event.data;
70 hw_event_callback *callback = entry->event.callback;
71 struct hw_event_data **prev = &me->events_of_hw;
72 while ((*prev) != entry)
73 prev = &(*prev)->next;
74 (*prev) = entry->next;
76 callback (me, event_data); /* may not return */
81 /* Map onto the event functions */
84 hw_event_queue_schedule (struct hw *me,
86 hw_event_callback *callback,
89 struct hw_event *event;
91 memset (&dummy, 0, sizeof dummy);
92 event = hw_event_queue_schedule_vtracef (me, delta_time, callback, data,
98 hw_event_queue_schedule_tracef (struct hw *me,
100 hw_event_callback *callback,
105 struct hw_event *event;
108 event = hw_event_queue_schedule_vtracef (me, delta_time, callback, data, fmt, ap);
114 hw_event_queue_schedule_vtracef (struct hw *me,
116 hw_event_callback *callback,
121 struct hw_event_data *entry = HW_ZALLOC (me, struct hw_event_data);
122 entry->next = me->events_of_hw;
123 me->events_of_hw = entry;
125 entry->event.entry = entry;
126 entry->event.data = data;
127 entry->event.callback = callback;
128 entry->event.me = me;
129 entry->event.real = sim_events_schedule_vtracef (hw_system (me),
134 return &entry->event;
139 hw_event_queue_deschedule (struct hw *me,
140 struct hw_event *event_to_remove)
142 /* ZAP the event but only if it is still in the event queue. Note
143 that event_to_remove is only de-referenced after its validity has
145 struct hw_event_data **prev;
146 for (prev = &me->events_of_hw;
148 prev = &(*prev)->next)
150 struct hw_event_data *entry = (*prev);
151 if (&entry->event == event_to_remove)
153 sim_events_deschedule (hw_system (me),
155 (*prev) = entry->next;
164 hw_event_queue_time (struct hw *me)
166 return sim_events_time (hw_system (me));
169 /* Returns the time that remains before the event is raised. */
171 hw_event_remain_time (struct hw *me, struct hw_event *event)
175 t = sim_events_remain_time (hw_system (me), event->real);
179 /* Only worry about this compling on ANSI systems.
180 Build with `make test-hw-events' in sim/<cpu> directory*/
183 #include "sim-main.h"
188 test_handler (struct hw *me,
192 if (*n != hw_event_queue_time (me))
201 host_callback *cb = ZALLOC (host_callback);
202 struct sim_state *sd = sim_state_alloc (0, cb);
203 struct hw *me = ZALLOC (struct hw);
204 sim_pre_argv_init (sd, "test-hw-events");
205 sim_post_argv_init (sd);
206 me->system_of_hw = sd;
208 printf ("Create hw-event-data\n");
210 create_hw_alloc_data (me);
211 create_hw_event_data (me);
212 delete_hw_event_data (me);
213 delete_hw_alloc_data (me);
216 printf ("Create hw-events\n");
222 create_hw_alloc_data (me);
223 create_hw_event_data (me);
224 a = hw_event_queue_schedule (me, 0, NULL, NULL);
225 b = hw_event_queue_schedule (me, 1, NULL, NULL);
226 c = hw_event_queue_schedule (me, 2, NULL, NULL);
227 d = hw_event_queue_schedule (me, 1, NULL, NULL);
228 hw_event_queue_deschedule (me, c);
229 hw_event_queue_deschedule (me, b);
230 hw_event_queue_deschedule (me, a);
231 hw_event_queue_deschedule (me, d);
232 c = HW_ZALLOC (me, struct hw_event);
233 hw_event_queue_deschedule (me, b); /* OOPS! */
235 delete_hw_event_data (me);
236 delete_hw_alloc_data (me);
239 printf ("Schedule hw-events\n");
245 e = HW_NZALLOC (me, struct hw_event *, nr);
246 n = HW_NZALLOC (me, int, nr);
247 create_hw_alloc_data (me);
248 create_hw_event_data (me);
249 for (i = 0; i < nr; i++)
252 e[i] = hw_event_queue_schedule (me, i, test_handler, &n[i]);
254 sim_events_preprocess (sd, 1, 1);
255 for (i = 0; i < nr; i++)
257 if (sim_events_tick (sd))
258 sim_events_process (sd);
260 for (i = 0; i < nr; i++)
264 hw_event_queue_deschedule (me, e[i]);
268 delete_hw_event_data (me);
269 delete_hw_alloc_data (me);