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 if (me->events_of_hw != NULL)
55 hw_abort (me, "stray events");
59 /* Pass the H/W event onto the real callback */
62 bounce_hw_event (SIM_DESC sd,
66 struct hw_event_data *entry = (struct hw_event_data *) data;
67 struct hw *me = entry->event.me;
68 void *event_data = entry->event.data;
69 hw_event_callback *callback = entry->event.callback;
70 struct hw_event_data **prev = &me->events_of_hw;
71 while ((*prev) != entry)
72 prev = &(*prev)->next;
73 (*prev) = entry->next;
75 callback (me, event_data); /* may not return */
80 /* Map onto the event functions */
83 hw_event_queue_schedule (struct hw *me,
85 hw_event_callback *callback,
88 struct hw_event *event;
90 event = hw_event_queue_schedule_vtracef (me, delta_time, callback, data,
96 hw_event_queue_schedule_tracef (struct hw *me,
98 hw_event_callback *callback,
103 struct hw_event *event;
106 event = hw_event_queue_schedule_vtracef (me, delta_time, callback, data, fmt, ap);
112 hw_event_queue_schedule_vtracef (struct hw *me,
114 hw_event_callback *callback,
119 struct hw_event_data *entry = HW_ZALLOC (me, struct hw_event_data);
120 entry->next = me->events_of_hw;
121 me->events_of_hw = entry;
123 entry->event.entry = entry;
124 entry->event.data = data;
125 entry->event.callback = callback;
126 entry->event.me = me;
127 entry->event.real = sim_events_schedule_vtracef (hw_system (me),
132 return &entry->event;
137 hw_event_queue_deschedule (struct hw *me,
138 struct hw_event *event_to_remove)
140 /* ZAP the event but only if it is still in the event queue. Note
141 that event_to_remove is only de-referenced after its validity has
143 struct hw_event_data **prev;
144 for (prev = &me->events_of_hw;
146 prev = &(*prev)->next)
148 struct hw_event_data *entry = (*prev);
149 if (&entry->event == event_to_remove)
151 sim_events_deschedule (hw_system (me),
153 (*prev) = entry->next;
162 hw_event_queue_time (struct hw *me)
164 return sim_events_time (hw_system (me));
168 /* Only worry about this compling on ANSI systems.
169 Build with `make test-hw-events' in sim/<cpu> directory*/
172 #include "sim-main.h"
177 test_handler (struct hw *me,
181 if (*n != hw_event_queue_time (me))
190 host_callback *cb = ZALLOC (host_callback);
191 struct sim_state *sd = sim_state_alloc (0, cb);
192 struct hw *me = ZALLOC (struct hw);
193 sim_pre_argv_init (sd, "test-hw-events");
194 sim_post_argv_init (sd);
195 me->system_of_hw = sd;
197 printf ("Create hw-event-data\n");
199 create_hw_alloc_data (me);
200 create_hw_event_data (me);
201 delete_hw_event_data (me);
202 delete_hw_alloc_data (me);
205 printf ("Create hw-events\n");
211 create_hw_alloc_data (me);
212 create_hw_event_data (me);
213 a = hw_event_queue_schedule (me, 0, NULL, NULL);
214 b = hw_event_queue_schedule (me, 1, NULL, NULL);
215 c = hw_event_queue_schedule (me, 2, NULL, NULL);
216 d = hw_event_queue_schedule (me, 1, NULL, NULL);
217 hw_event_queue_deschedule (me, c);
218 hw_event_queue_deschedule (me, b);
219 hw_event_queue_deschedule (me, a);
220 hw_event_queue_deschedule (me, d);
221 c = HW_ZALLOC (me, struct hw_event);
222 hw_event_queue_deschedule (me, b); /* OOPS! */
224 delete_hw_event_data (me);
225 delete_hw_alloc_data (me);
228 printf ("Schedule hw-events\n");
234 e = HW_NZALLOC (me, struct hw_event *, nr);
235 n = HW_NZALLOC (me, int, nr);
236 create_hw_alloc_data (me);
237 create_hw_event_data (me);
238 for (i = 0; i < nr; i++)
241 e[i] = hw_event_queue_schedule (me, i, test_handler, &n[i]);
243 sim_events_preprocess (sd, 1, 1);
244 for (i = 0; i < nr; i++)
246 if (sim_events_tick (sd))
247 sim_events_process (sd);
249 for (i = 0; i < nr; i++)
253 hw_event_queue_deschedule (me, e[i]);
257 delete_hw_event_data (me);
258 delete_hw_alloc_data (me);