Commit | Line | Data |
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8517f62b AC |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _SIM_EVENTS_C_ | |
23 | #define _SIM_EVENTS_C_ | |
24 | ||
25 | #include "sim-main.h" | |
26 | #include "sim-assert.h" | |
27 | ||
50a2a691 AC |
28 | #ifdef HAVE_STRING_H |
29 | #include <string.h> | |
30 | #else | |
31 | #ifdef HAVE_STRINGS_H | |
32 | #include <strings.h> | |
33 | #endif | |
34 | #endif | |
35 | ||
8517f62b AC |
36 | #include <signal.h> |
37 | ||
50a2a691 | 38 | |
f03b093c AC |
39 | typedef enum { |
40 | watch_invalid, | |
41 | ||
42 | /* core - target byte order */ | |
43 | watch_core_targ_1, | |
44 | watch_core_targ_2, | |
45 | watch_core_targ_4, | |
46 | watch_core_targ_8, | |
47 | /* core - big-endian */ | |
48 | watch_core_be_1, | |
49 | watch_core_be_2, | |
50 | watch_core_be_4, | |
51 | watch_core_be_8, | |
52 | /* core - little-endian */ | |
53 | watch_core_le_1, | |
54 | watch_core_le_2, | |
55 | watch_core_le_4, | |
56 | watch_core_le_8, | |
57 | ||
58 | /* sim - host byte order */ | |
59 | watch_sim_host_1, | |
60 | watch_sim_host_2, | |
61 | watch_sim_host_4, | |
62 | watch_sim_host_8, | |
63 | /* sim - big-endian */ | |
64 | watch_sim_be_1, | |
65 | watch_sim_be_2, | |
66 | watch_sim_be_4, | |
67 | watch_sim_be_8, | |
68 | /* sim - little-endian */ | |
69 | watch_sim_le_1, | |
70 | watch_sim_le_2, | |
71 | watch_sim_le_4, | |
72 | watch_sim_le_8, | |
73 | ||
74 | /* wallclock */ | |
75 | watch_clock, | |
76 | ||
77 | /* timer */ | |
78 | watch_timer, | |
50a2a691 | 79 | } sim_event_watchpoints; |
f03b093c AC |
80 | |
81 | ||
82 | struct _sim_event { | |
50a2a691 | 83 | sim_event_watchpoints watching; |
f03b093c AC |
84 | void *data; |
85 | sim_event_handler *handler; | |
86 | /* timer event */ | |
87 | signed64 time_of_event; | |
88 | /* watch wallclock event */ | |
89 | unsigned wallclock; | |
90 | /* watch core address */ | |
91 | address_word core_addr; | |
92 | sim_core_maps core_map; | |
93 | /* watch sim addr */ | |
94 | void *host_addr; | |
95 | /* watch core/sim range */ | |
2f2e6c5d | 96 | int is_within; /* 0/1 */ |
f03b093c AC |
97 | unsigned ub; |
98 | unsigned lb; | |
99 | unsigned64 ub64; | |
100 | unsigned64 lb64; | |
101 | /* list */ | |
102 | sim_event *next; | |
103 | }; | |
104 | ||
8517f62b AC |
105 | |
106 | /* The event queue maintains a single absolute time using two | |
107 | variables. | |
108 | ||
109 | TIME_OF_EVENT: this holds the time at which the next event is ment | |
110 | to occure. If no next event it will hold the time of the last | |
111 | event. | |
112 | ||
113 | TIME_FROM_EVENT: The current distance from TIME_OF_EVENT. If an | |
114 | event is pending, this will be positive. If no future event is | |
50a2a691 AC |
115 | pending (eg when poll-event is being processed) this will be |
116 | negative. This variable is decremented once for each iteration of | |
117 | a clock cycle. | |
8517f62b AC |
118 | |
119 | Initially, the clock is started at time one (0) with TIME_OF_EVENT | |
120 | == 0 and TIME_FROM_EVENT == 0. | |
121 | ||
122 | Clearly there is a bug in that this code assumes that the absolute | |
123 | time counter will never become greater than 2^62. | |
124 | ||
125 | To avoid the need to use 64bit arithmetic, the event queue always | |
126 | contains at least one event scheduled every 16 000 ticks. This | |
127 | limits the time from event counter to values less than | |
128 | 16 000. */ | |
129 | ||
130 | ||
131 | #if !defined (SIM_EVENTS_POLL_RATE) | |
4a203fba | 132 | #define SIM_EVENTS_POLL_RATE 0x1000 |
8517f62b AC |
133 | #endif |
134 | ||
135 | ||
4a203fba | 136 | #define _ETRACE sd, NULL |
8517f62b AC |
137 | |
138 | #undef ETRACE | |
139 | #define ETRACE(ARGS) \ | |
140 | do \ | |
141 | { \ | |
142 | if (WITH_TRACE) \ | |
143 | { \ | |
f03b093c | 144 | if (STATE_EVENTS (sd)->trace) \ |
8517f62b AC |
145 | { \ |
146 | const char *file; \ | |
f03b093c | 147 | SIM_FILTER_PATH (file, __FILE__); \ |
4a203fba AC |
148 | trace_printf (sd, NULL, "%s:%d: ", file, __LINE__); \ |
149 | trace_printf ARGS; \ | |
8517f62b AC |
150 | } \ |
151 | } \ | |
152 | } \ | |
153 | while (0) | |
154 | ||
155 | ||
50a2a691 AC |
156 | /* event queue iterator - don't iterate over the held queue. */ |
157 | ||
f03b093c AC |
158 | STATIC_INLINE_SIM_EVENTS\ |
159 | (sim_event **) | |
160 | next_event_queue (SIM_DESC sd, | |
161 | sim_event **queue) | |
162 | { | |
163 | if (queue == NULL) | |
164 | return &STATE_EVENTS (sd)->queue; | |
165 | else if (queue == &STATE_EVENTS (sd)->queue) | |
166 | return &STATE_EVENTS (sd)->watchpoints; | |
167 | else if (queue == &STATE_EVENTS (sd)->watchpoints) | |
168 | return &STATE_EVENTS (sd)->watchedpoints; | |
169 | else if (queue == &STATE_EVENTS (sd)->watchedpoints) | |
170 | return NULL; | |
171 | else | |
172 | sim_io_error (sd, "next_event_queue - bad queue"); | |
173 | return NULL; | |
174 | } | |
175 | ||
176 | ||
8517f62b AC |
177 | STATIC_INLINE_SIM_EVENTS\ |
178 | (void) | |
f03b093c AC |
179 | sim_events_poll (SIM_DESC sd, |
180 | void *data) | |
8517f62b AC |
181 | { |
182 | /* just re-schedule in 1000 million ticks time */ | |
f03b093c | 183 | sim_events_schedule (sd, SIM_EVENTS_POLL_RATE, sim_events_poll, sd); |
8517f62b AC |
184 | sim_io_poll_quit (sd); |
185 | } | |
186 | ||
187 | ||
f03b093c AC |
188 | /* "events" module install handler. |
189 | This is called via sim_module_install to install the "events" subsystem | |
190 | into the simulator. */ | |
191 | ||
fdd64f95 AC |
192 | STATIC_SIM_EVENTS (MODULE_UNINSTALL_FN) sim_events_uninstall; |
193 | STATIC_SIM_EVENTS (MODULE_INIT_FN) sim_events_init; | |
194 | STATIC_SIM_EVENTS (MODULE_RESUME_FN) sim_events_resume; | |
195 | STATIC_SIM_EVENTS (MODULE_SUSPEND_FN) sim_events_suspend; | |
196 | ||
f03b093c AC |
197 | EXTERN_SIM_EVENTS\ |
198 | (SIM_RC) | |
199 | sim_events_install (SIM_DESC sd) | |
200 | { | |
50a2a691 | 201 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
f03b093c AC |
202 | sim_module_add_uninstall_fn (sd, sim_events_uninstall); |
203 | sim_module_add_init_fn (sd, sim_events_init); | |
fdd64f95 AC |
204 | sim_module_add_resume_fn (sd, sim_events_resume); |
205 | sim_module_add_suspend_fn (sd, sim_events_suspend); | |
206 | return SIM_RC_OK; | |
207 | } | |
208 | ||
209 | ||
210 | /* Suspend/resume the event queue manager when the simulator is not | |
211 | running */ | |
212 | ||
213 | STATIC_SIM_EVENTS\ | |
214 | (SIM_RC) | |
215 | sim_events_resume (SIM_DESC sd) | |
216 | { | |
217 | sim_events *events = STATE_EVENTS (sd); | |
218 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
219 | SIM_ASSERT (events->resume_wallclock == 0); | |
220 | events->resume_wallclock = sim_elapsed_time_get (); | |
221 | return SIM_RC_OK; | |
222 | } | |
223 | ||
224 | STATIC_SIM_EVENTS\ | |
225 | (SIM_RC) | |
226 | sim_events_suspend (SIM_DESC sd) | |
227 | { | |
228 | sim_events *events = STATE_EVENTS (sd); | |
229 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
230 | SIM_ASSERT (events->resume_wallclock != 0); | |
231 | events->elapsed_wallclock += sim_elapsed_time_since (events->resume_wallclock); | |
232 | events->resume_wallclock = 0; | |
f03b093c AC |
233 | return SIM_RC_OK; |
234 | } | |
235 | ||
236 | ||
237 | /* Uninstall the "events" subsystem from the simulator. */ | |
238 | ||
fdd64f95 | 239 | STATIC_SIM_EVENTS\ |
8517f62b | 240 | (void) |
f03b093c | 241 | sim_events_uninstall (SIM_DESC sd) |
8517f62b | 242 | { |
fdd64f95 | 243 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
f03b093c AC |
244 | /* FIXME: free buffers, etc. */ |
245 | } | |
246 | ||
247 | ||
50a2a691 AC |
248 | /* malloc/free */ |
249 | ||
250 | STATIC_INLINE_SIM_EVENTS\ | |
251 | (sim_event *) | |
252 | sim_events_zalloc (SIM_DESC sd) | |
253 | { | |
254 | sim_events *events = STATE_EVENTS (sd); | |
255 | sim_event *new = events->free_list; | |
256 | if (new != NULL) | |
257 | { | |
258 | events->free_list = new->next; | |
259 | memset (new, 0, sizeof (*new)); | |
260 | } | |
261 | else | |
262 | { | |
263 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
264 | /*-LOCK-*/ | |
265 | sigset_t old_mask; | |
266 | sigset_t new_mask; | |
267 | sigfillset(&new_mask); | |
268 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
269 | #endif | |
270 | new = ZALLOC (sim_event); | |
271 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
272 | /*-UNLOCK-*/ | |
273 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
274 | #endif | |
275 | } | |
276 | return new; | |
277 | } | |
278 | ||
279 | STATIC_INLINE_SIM_EVENTS\ | |
280 | (void) | |
281 | sim_events_free (SIM_DESC sd, | |
282 | sim_event *dead) | |
283 | { | |
284 | sim_events *events = STATE_EVENTS (sd); | |
285 | dead->next = events->free_list; | |
286 | events->free_list = dead; | |
287 | } | |
288 | ||
289 | ||
f03b093c AC |
290 | /* Initialize the simulator event manager */ |
291 | ||
292 | EXTERN_SIM_EVENTS\ | |
293 | (SIM_RC) | |
294 | sim_events_init (SIM_DESC sd) | |
295 | { | |
296 | sim_events *events = STATE_EVENTS (sd); | |
8517f62b AC |
297 | |
298 | /* drain the interrupt queue */ | |
50a2a691 AC |
299 | events->nr_held = 0; |
300 | if (events->held == NULL) | |
301 | events->held = zalloc (sizeof (sim_event) * MAX_NR_SIGNAL_SIM_EVENTS); | |
8517f62b | 302 | |
f03b093c AC |
303 | /* drain the normal queues */ |
304 | { | |
305 | sim_event **queue = NULL; | |
306 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
307 | { | |
308 | if (queue == NULL) break; | |
309 | while (*queue != NULL) | |
310 | { | |
311 | sim_event *dead = *queue; | |
312 | *queue = dead->next; | |
50a2a691 | 313 | sim_events_free (sd, dead); |
f03b093c AC |
314 | } |
315 | *queue = NULL; | |
316 | } | |
8517f62b | 317 | } |
f03b093c | 318 | |
8517f62b | 319 | /* wind time back to zero */ |
50a2a691 | 320 | events->nr_ticks_to_process = 1; /* start by doing queue */ |
8517f62b AC |
321 | events->time_of_event = 0; |
322 | events->time_from_event = 0; | |
fdd64f95 AC |
323 | events->elapsed_wallclock = 0; |
324 | events->resume_wallclock = 0; | |
8517f62b AC |
325 | |
326 | /* schedule our initial counter event */ | |
f03b093c | 327 | sim_events_schedule (sd, 0, sim_events_poll, sd); |
8517f62b AC |
328 | |
329 | /* from now on, except when the large-int event is being processed | |
330 | the event queue is non empty */ | |
f03b093c AC |
331 | SIM_ASSERT (events->queue != NULL); |
332 | ||
333 | return SIM_RC_OK; | |
8517f62b AC |
334 | } |
335 | ||
f03b093c | 336 | |
8517f62b AC |
337 | INLINE_SIM_EVENTS\ |
338 | (signed64) | |
f03b093c | 339 | sim_events_time (SIM_DESC sd) |
8517f62b | 340 | { |
f03b093c | 341 | sim_events *events = STATE_EVENTS (sd); |
8517f62b AC |
342 | return events->time_of_event - events->time_from_event; |
343 | } | |
344 | ||
f03b093c | 345 | |
93e7a1b5 AC |
346 | INLINE_SIM_EVENTS\ |
347 | (unsigned long) | |
348 | sim_events_elapsed_time (SIM_DESC sd) | |
349 | { | |
350 | return (sim_elapsed_time_since (STATE_EVENTS (sd)->resume_wallclock) | |
351 | + STATE_EVENTS (sd)->elapsed_wallclock); | |
352 | } | |
353 | ||
354 | ||
8517f62b AC |
355 | STATIC_INLINE_SIM_EVENTS\ |
356 | (void) | |
f03b093c | 357 | update_time_from_event (SIM_DESC sd) |
8517f62b | 358 | { |
f03b093c AC |
359 | sim_events *events = STATE_EVENTS (sd); |
360 | signed64 current_time = sim_events_time (sd); | |
361 | if (events->queue != NULL) | |
362 | { | |
363 | events->time_from_event = (events->queue->time_of_event - current_time); | |
364 | events->time_of_event = events->queue->time_of_event; | |
365 | } | |
366 | else | |
367 | { | |
368 | events->time_of_event = current_time - 1; | |
369 | events->time_from_event = -1; | |
370 | } | |
371 | SIM_ASSERT (current_time == sim_events_time (sd)); | |
372 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); | |
8517f62b AC |
373 | } |
374 | ||
f03b093c | 375 | |
8517f62b AC |
376 | STATIC_INLINE_SIM_EVENTS\ |
377 | (void) | |
f03b093c AC |
378 | insert_sim_event (SIM_DESC sd, |
379 | sim_event *new_event, | |
380 | signed64 delta) | |
8517f62b | 381 | { |
f03b093c | 382 | sim_events *events = STATE_EVENTS (sd); |
8517f62b AC |
383 | sim_event *curr; |
384 | sim_event **prev; | |
385 | signed64 time_of_event; | |
386 | ||
387 | if (delta < 0) | |
f03b093c AC |
388 | sim_io_error (sd, "what is past is past!\n"); |
389 | ||
8517f62b | 390 | /* compute when the event should occure */ |
f03b093c AC |
391 | time_of_event = sim_events_time (sd) + delta; |
392 | ||
8517f62b AC |
393 | /* find the queue insertion point - things are time ordered */ |
394 | prev = &events->queue; | |
395 | curr = events->queue; | |
f03b093c AC |
396 | while (curr != NULL && time_of_event >= curr->time_of_event) |
397 | { | |
398 | SIM_ASSERT (curr->next == NULL | |
399 | || curr->time_of_event <= curr->next->time_of_event); | |
400 | prev = &curr->next; | |
401 | curr = curr->next; | |
402 | } | |
403 | SIM_ASSERT (curr == NULL || time_of_event < curr->time_of_event); | |
404 | ||
8517f62b AC |
405 | /* insert it */ |
406 | new_event->next = curr; | |
407 | *prev = new_event; | |
408 | new_event->time_of_event = time_of_event; | |
f03b093c | 409 | |
8517f62b | 410 | /* adjust the time until the first event */ |
f03b093c | 411 | update_time_from_event (sd); |
8517f62b AC |
412 | } |
413 | ||
f03b093c AC |
414 | |
415 | EXTERN_SIM_EVENTS\ | |
8517f62b | 416 | (sim_event *) |
f03b093c AC |
417 | sim_events_schedule (SIM_DESC sd, |
418 | signed64 delta_time, | |
419 | sim_event_handler *handler, | |
420 | void *data) | |
8517f62b | 421 | { |
50a2a691 | 422 | sim_event *new_event = sim_events_zalloc (sd); |
8517f62b AC |
423 | new_event->data = data; |
424 | new_event->handler = handler; | |
f03b093c | 425 | new_event->watching = watch_timer; |
8517f62b AC |
426 | insert_sim_event(sd, new_event, delta_time); |
427 | ETRACE((_ETRACE, | |
428 | "event scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
429 | (long)sim_events_time(sd), | |
430 | (long)new_event, | |
431 | (long)new_event->time_of_event, | |
432 | (long)new_event->handler, | |
433 | (long)new_event->data)); | |
434 | return new_event; | |
435 | } | |
436 | ||
437 | ||
f03b093c | 438 | EXTERN_SIM_EVENTS\ |
50a2a691 AC |
439 | (void) |
440 | sim_events_schedule_after_signal (SIM_DESC sd, | |
441 | signed64 delta_time, | |
442 | sim_event_handler *handler, | |
443 | void *data) | |
8517f62b | 444 | { |
f03b093c | 445 | sim_events *events = STATE_EVENTS (sd); |
50a2a691 AC |
446 | sim_event *new_event; |
447 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
448 | /*-LOCK-*/ | |
449 | sigset_t old_mask; | |
450 | sigset_t new_mask; | |
451 | sigfillset(&new_mask); | |
452 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
453 | #endif | |
454 | ||
455 | /* allocate an event entry from the signal buffer */ | |
456 | new_event = &events->held [events->nr_held]; | |
457 | events->nr_held ++; | |
f90b720b | 458 | if (events->nr_held > MAX_NR_SIGNAL_SIM_EVENTS) |
50a2a691 AC |
459 | { |
460 | sim_engine_abort (NULL, NULL, NULL_CIA, | |
461 | "sim_events_schedule_after_signal - buffer oveflow"); | |
462 | } | |
f03b093c | 463 | |
8517f62b AC |
464 | new_event->data = data; |
465 | new_event->handler = handler; | |
466 | new_event->time_of_event = delta_time; /* work it out later */ | |
467 | new_event->next = NULL; | |
50a2a691 AC |
468 | |
469 | events->work_pending = 1; /* notify main process */ | |
470 | ||
f03b093c | 471 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) |
50a2a691 AC |
472 | /*-UNLOCK-*/ |
473 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
8517f62b | 474 | #endif |
f03b093c AC |
475 | |
476 | ETRACE ((_ETRACE, | |
50a2a691 | 477 | "signal scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", |
f03b093c AC |
478 | (long)sim_events_time(sd), |
479 | (long)new_event, | |
480 | (long)new_event->time_of_event, | |
481 | (long)new_event->handler, | |
482 | (long)new_event->data)); | |
f03b093c | 483 | } |
8517f62b | 484 | |
8517f62b | 485 | |
f03b093c AC |
486 | EXTERN_SIM_EVENTS\ |
487 | (sim_event *) | |
488 | sim_events_watch_clock (SIM_DESC sd, | |
50a2a691 | 489 | unsigned delta_ms_time, |
f03b093c AC |
490 | sim_event_handler *handler, |
491 | void *data) | |
492 | { | |
493 | sim_events *events = STATE_EVENTS (sd); | |
50a2a691 | 494 | sim_event *new_event = sim_events_zalloc (sd); |
f03b093c AC |
495 | /* type */ |
496 | new_event->watching = watch_clock; | |
497 | /* handler */ | |
498 | new_event->data = data; | |
499 | new_event->handler = handler; | |
500 | /* data */ | |
fdd64f95 AC |
501 | if (events->resume_wallclock == 0) |
502 | new_event->wallclock = (events->elapsed_wallclock + delta_ms_time); | |
503 | else | |
504 | new_event->wallclock = (events->elapsed_wallclock | |
505 | + sim_elapsed_time_since (events->resume_wallclock) | |
506 | + delta_ms_time); | |
f03b093c AC |
507 | /* insert */ |
508 | new_event->next = events->watchpoints; | |
509 | events->watchpoints = new_event; | |
510 | events->work_pending = 1; | |
511 | ETRACE ((_ETRACE, | |
512 | "event watching clock at %ld - tag 0x%lx - wallclock %ld, handler 0x%lx, data 0x%lx\n", | |
513 | (long)sim_events_time (sd), | |
514 | (long)new_event, | |
515 | (long)new_event->wallclock, | |
516 | (long)new_event->handler, | |
517 | (long)new_event->data)); | |
8517f62b AC |
518 | return new_event; |
519 | } | |
520 | ||
521 | ||
f03b093c AC |
522 | EXTERN_SIM_EVENTS\ |
523 | (sim_event *) | |
524 | sim_events_watch_sim (SIM_DESC sd, | |
525 | void *host_addr, | |
526 | int nr_bytes, | |
527 | int byte_order, | |
2f2e6c5d | 528 | int is_within, |
f03b093c AC |
529 | unsigned64 lb, |
530 | unsigned64 ub, | |
531 | sim_event_handler *handler, | |
532 | void *data) | |
533 | { | |
534 | sim_events *events = STATE_EVENTS (sd); | |
50a2a691 | 535 | sim_event *new_event = sim_events_zalloc (sd); |
f03b093c AC |
536 | /* type */ |
537 | switch (byte_order) | |
538 | { | |
539 | case 0: | |
540 | switch (nr_bytes) | |
541 | { | |
542 | case 1: new_event->watching = watch_sim_host_1; break; | |
543 | case 2: new_event->watching = watch_sim_host_2; break; | |
544 | case 4: new_event->watching = watch_sim_host_4; break; | |
545 | case 8: new_event->watching = watch_sim_host_8; break; | |
546 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
547 | } | |
548 | break; | |
549 | case BIG_ENDIAN: | |
550 | switch (nr_bytes) | |
551 | { | |
552 | case 1: new_event->watching = watch_sim_be_1; break; | |
553 | case 2: new_event->watching = watch_sim_be_2; break; | |
554 | case 4: new_event->watching = watch_sim_be_4; break; | |
555 | case 8: new_event->watching = watch_sim_be_8; break; | |
556 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
557 | } | |
558 | break; | |
559 | case LITTLE_ENDIAN: | |
560 | switch (nr_bytes) | |
561 | { | |
562 | case 1: new_event->watching = watch_sim_le_1; break; | |
563 | case 2: new_event->watching = watch_sim_le_2; break; | |
564 | case 4: new_event->watching = watch_sim_le_4; break; | |
565 | case 8: new_event->watching = watch_sim_le_8; break; | |
566 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
567 | } | |
568 | break; | |
569 | default: | |
570 | sim_io_error (sd, "sim_events_watch_sim - invalid byte order"); | |
571 | } | |
572 | /* handler */ | |
573 | new_event->data = data; | |
574 | new_event->handler = handler; | |
575 | /* data */ | |
576 | new_event->host_addr = host_addr; | |
577 | new_event->lb = lb; | |
578 | new_event->lb64 = lb; | |
579 | new_event->ub = ub; | |
580 | new_event->ub64 = ub; | |
2f2e6c5d | 581 | new_event->is_within = (is_within != 0); |
f03b093c AC |
582 | /* insert */ |
583 | new_event->next = events->watchpoints; | |
584 | events->watchpoints = new_event; | |
585 | events->work_pending = 1; | |
586 | ETRACE ((_ETRACE, | |
587 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
588 | (long)sim_events_time (sd), | |
589 | (long)new_event, | |
590 | (long)new_event->host_addr, | |
591 | (long)new_event->lb, | |
592 | (long)new_event->ub, | |
593 | (long)new_event->handler, | |
594 | (long)new_event->data)); | |
595 | return new_event; | |
596 | } | |
597 | ||
598 | ||
599 | EXTERN_SIM_EVENTS\ | |
600 | (sim_event *) | |
601 | sim_events_watch_core (SIM_DESC sd, | |
602 | address_word core_addr, | |
603 | sim_core_maps core_map, | |
604 | int nr_bytes, | |
605 | int byte_order, | |
2f2e6c5d | 606 | int is_within, |
f03b093c AC |
607 | unsigned64 lb, |
608 | unsigned64 ub, | |
609 | sim_event_handler *handler, | |
610 | void *data) | |
611 | { | |
612 | sim_events *events = STATE_EVENTS (sd); | |
50a2a691 | 613 | sim_event *new_event = sim_events_zalloc (sd); |
f03b093c AC |
614 | /* type */ |
615 | switch (byte_order) | |
616 | { | |
617 | case 0: | |
618 | switch (nr_bytes) | |
619 | { | |
620 | case 1: new_event->watching = watch_core_targ_1; break; | |
621 | case 2: new_event->watching = watch_core_targ_2; break; | |
622 | case 4: new_event->watching = watch_core_targ_4; break; | |
623 | case 8: new_event->watching = watch_core_targ_8; break; | |
624 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
625 | } | |
626 | break; | |
627 | case BIG_ENDIAN: | |
628 | switch (nr_bytes) | |
629 | { | |
630 | case 1: new_event->watching = watch_core_be_1; break; | |
631 | case 2: new_event->watching = watch_core_be_2; break; | |
632 | case 4: new_event->watching = watch_core_be_4; break; | |
633 | case 8: new_event->watching = watch_core_be_8; break; | |
634 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
635 | } | |
636 | break; | |
637 | case LITTLE_ENDIAN: | |
638 | switch (nr_bytes) | |
639 | { | |
640 | case 1: new_event->watching = watch_core_le_1; break; | |
641 | case 2: new_event->watching = watch_core_le_2; break; | |
642 | case 4: new_event->watching = watch_core_le_4; break; | |
643 | case 8: new_event->watching = watch_core_le_8; break; | |
644 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
645 | } | |
646 | break; | |
647 | default: | |
648 | sim_io_error (sd, "sim_events_watch_core - invalid byte order"); | |
649 | } | |
650 | /* handler */ | |
651 | new_event->data = data; | |
652 | new_event->handler = handler; | |
653 | /* data */ | |
654 | new_event->core_addr = core_addr; | |
655 | new_event->core_map = core_map; | |
656 | new_event->lb = lb; | |
657 | new_event->lb64 = lb; | |
658 | new_event->ub = ub; | |
659 | new_event->ub64 = ub; | |
2f2e6c5d | 660 | new_event->is_within = (is_within != 0); |
f03b093c AC |
661 | /* insert */ |
662 | new_event->next = events->watchpoints; | |
663 | events->watchpoints = new_event; | |
664 | events->work_pending = 1; | |
665 | ETRACE ((_ETRACE, | |
666 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
667 | (long)sim_events_time (sd), | |
668 | (long)new_event, | |
669 | (long)new_event->host_addr, | |
670 | (long)new_event->lb, | |
671 | (long)new_event->ub, | |
672 | (long)new_event->handler, | |
673 | (long)new_event->data)); | |
674 | return new_event; | |
675 | } | |
676 | ||
677 | ||
678 | EXTERN_SIM_EVENTS\ | |
8517f62b | 679 | (void) |
f03b093c AC |
680 | sim_events_deschedule (SIM_DESC sd, |
681 | sim_event *event_to_remove) | |
8517f62b | 682 | { |
f03b093c | 683 | sim_events *events = STATE_EVENTS (sd); |
8517f62b | 684 | sim_event *to_remove = (sim_event*)event_to_remove; |
f03b093c AC |
685 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); |
686 | if (event_to_remove != NULL) | |
687 | { | |
688 | sim_event **queue = NULL; | |
689 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
690 | { | |
691 | sim_event **ptr_to_current; | |
692 | for (ptr_to_current = queue; | |
693 | *ptr_to_current != NULL && *ptr_to_current != to_remove; | |
694 | ptr_to_current = &(*ptr_to_current)->next); | |
695 | if (*ptr_to_current == to_remove) | |
696 | { | |
697 | sim_event *dead = *ptr_to_current; | |
698 | *ptr_to_current = dead->next; | |
699 | ETRACE ((_ETRACE, | |
700 | "event/watch descheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
701 | (long) sim_events_time (sd), | |
702 | (long) event_to_remove, | |
703 | (long) dead->time_of_event, | |
704 | (long) dead->handler, | |
705 | (long) dead->data)); | |
50a2a691 | 706 | sim_events_free (sd, dead); |
f03b093c AC |
707 | update_time_from_event (sd); |
708 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); | |
709 | return; | |
710 | } | |
711 | } | |
8517f62b | 712 | } |
f03b093c AC |
713 | ETRACE ((_ETRACE, |
714 | "event/watch descheduled at %ld - tag 0x%lx - not found\n", | |
715 | (long) sim_events_time (sd), | |
716 | (long) event_to_remove)); | |
8517f62b AC |
717 | } |
718 | ||
719 | ||
f03b093c AC |
720 | STATIC_INLINE_SIM_EVENTS\ |
721 | (int) | |
722 | sim_watch_valid (SIM_DESC sd, | |
723 | sim_event *to_do) | |
724 | { | |
725 | switch (to_do->watching) | |
726 | { | |
727 | ||
50a2a691 | 728 | #define WATCH_CORE(N,OP,EXT) \ |
1a70e182 AC |
729 | int ok; \ |
730 | unsigned_##N word = 0; \ | |
731 | int nr_read = sim_core_read_buffer (sd, NULL, to_do->core_map, &word, \ | |
732 | to_do->core_addr, sizeof (word)); \ | |
733 | OP (word); \ | |
734 | ok = (nr_read == sizeof (unsigned_##N) \ | |
735 | && (to_do->is_within \ | |
736 | == (word >= to_do->lb##EXT \ | |
737 | && word <= to_do->ub##EXT))); | |
738 | ||
739 | case watch_core_targ_1: | |
740 | { | |
741 | WATCH_CORE (1, T2H,); | |
742 | return ok; | |
743 | } | |
744 | case watch_core_targ_2: | |
745 | { | |
746 | WATCH_CORE (2, T2H,); | |
747 | return ok; | |
748 | } | |
749 | case watch_core_targ_4: | |
750 | { | |
751 | WATCH_CORE (4, T2H,); | |
752 | return ok; | |
753 | } | |
754 | case watch_core_targ_8: | |
755 | { | |
756 | WATCH_CORE (8, T2H,64); | |
757 | return ok; | |
758 | } | |
759 | ||
760 | case watch_core_be_1: | |
761 | { | |
762 | WATCH_CORE (1, BE2H,); | |
763 | return ok; | |
764 | } | |
765 | case watch_core_be_2: | |
766 | { | |
767 | WATCH_CORE (2, BE2H,); | |
768 | return ok; | |
769 | } | |
770 | case watch_core_be_4: | |
771 | { | |
772 | WATCH_CORE (4, BE2H,); | |
773 | return ok; | |
774 | } | |
775 | case watch_core_be_8: | |
776 | { | |
777 | WATCH_CORE (8, BE2H,64); | |
778 | return ok; | |
779 | } | |
780 | ||
781 | case watch_core_le_1: | |
782 | { | |
783 | WATCH_CORE (1, LE2H,); | |
784 | return ok; | |
785 | } | |
786 | case watch_core_le_2: | |
787 | { | |
788 | WATCH_CORE (2, LE2H,); | |
789 | return ok; | |
790 | } | |
791 | case watch_core_le_4: | |
792 | { | |
793 | WATCH_CORE (4, LE2H,); | |
794 | return ok; | |
795 | } | |
796 | case watch_core_le_8: | |
797 | { | |
798 | WATCH_CORE (8, LE2H,64); | |
799 | return ok; | |
f03b093c | 800 | } |
f03b093c AC |
801 | #undef WATCH_CORE |
802 | ||
50a2a691 | 803 | #define WATCH_SIM(N,OP,EXT) \ |
1a70e182 AC |
804 | int ok; \ |
805 | unsigned_##N word = *(unsigned_##N*)to_do->host_addr; \ | |
806 | OP (word); \ | |
807 | ok = (to_do->is_within \ | |
808 | == (word >= to_do->lb##EXT \ | |
809 | && word <= to_do->ub##EXT)); | |
810 | ||
811 | case watch_sim_host_1: | |
812 | { | |
813 | WATCH_SIM (1, word = ,); | |
814 | return ok; | |
815 | } | |
816 | case watch_sim_host_2: | |
817 | { | |
818 | WATCH_SIM (2, word = ,); | |
819 | return ok; | |
820 | } | |
821 | case watch_sim_host_4: | |
822 | { | |
823 | WATCH_SIM (4, word = ,); | |
824 | return ok; | |
825 | } | |
826 | case watch_sim_host_8: | |
827 | { | |
828 | WATCH_SIM (8, word = ,64); | |
829 | return ok; | |
f03b093c AC |
830 | } |
831 | ||
1a70e182 AC |
832 | case watch_sim_be_1: |
833 | { | |
834 | WATCH_SIM (1, BE2H,); | |
835 | return ok; | |
836 | } | |
837 | case watch_sim_be_2: | |
838 | { | |
839 | WATCH_SIM (2, BE2H,); | |
840 | return ok; | |
841 | } | |
842 | case watch_sim_be_4: | |
843 | { | |
844 | WATCH_SIM (4, BE2H,); | |
845 | return ok; | |
846 | } | |
847 | case watch_sim_be_8: | |
848 | { | |
849 | WATCH_SIM (8, BE2H,64); | |
850 | return ok; | |
851 | } | |
f03b093c | 852 | |
1a70e182 AC |
853 | case watch_sim_le_1: |
854 | { | |
855 | WATCH_SIM (1, LE2H,); | |
856 | return ok; | |
857 | } | |
858 | case watch_sim_le_2: | |
859 | { | |
860 | WATCH_SIM (1, LE2H,); | |
861 | return ok; | |
862 | } | |
863 | case watch_sim_le_4: | |
864 | { | |
865 | WATCH_SIM (1, LE2H,); | |
866 | return ok; | |
867 | } | |
868 | case watch_sim_le_8: | |
869 | { | |
870 | WATCH_SIM (1, LE2H,64); | |
871 | return ok; | |
872 | } | |
f03b093c AC |
873 | #undef WATCH_SIM |
874 | ||
875 | case watch_clock: /* wallclock */ | |
50a2a691 | 876 | { |
93e7a1b5 | 877 | unsigned long elapsed_time = sim_events_elapsed_time (sd); |
50a2a691 AC |
878 | return (elapsed_time >= to_do->wallclock); |
879 | } | |
f03b093c | 880 | |
50a2a691 | 881 | default: |
f03b093c AC |
882 | sim_io_error (sd, "sim_watch_valid - bad switch"); |
883 | break; | |
884 | ||
885 | } | |
886 | return 1; | |
887 | } | |
8517f62b AC |
888 | |
889 | ||
890 | INLINE_SIM_EVENTS\ | |
891 | (int) | |
f03b093c | 892 | sim_events_tick (SIM_DESC sd) |
8517f62b | 893 | { |
f03b093c | 894 | sim_events *events = STATE_EVENTS (sd); |
4a203fba | 895 | SIM_ASSERT (events->nr_ticks_to_process == 0); |
8517f62b | 896 | |
50a2a691 AC |
897 | /* this should only be called after the previous ticks have been |
898 | fully processed */ | |
8517f62b AC |
899 | |
900 | /* Advance the time but *only* if there is nothing to process */ | |
f03b093c AC |
901 | if (events->work_pending |
902 | || events->time_from_event == 0) | |
903 | { | |
4a203fba | 904 | events->nr_ticks_to_process += 1; |
f03b093c AC |
905 | return 1; |
906 | } | |
8517f62b AC |
907 | else { |
908 | events->time_from_event -= 1; | |
909 | return 0; | |
910 | } | |
911 | } | |
912 | ||
913 | ||
50a2a691 AC |
914 | INLINE_SIM_EVENTS\ |
915 | (int) | |
916 | sim_events_tickn (SIM_DESC sd, | |
f90b720b | 917 | int n) |
50a2a691 AC |
918 | { |
919 | sim_events *events = STATE_EVENTS (sd); | |
4a203fba | 920 | SIM_ASSERT (n > 0); |
50a2a691 AC |
921 | |
922 | /* this should only be called after the previous ticks have been | |
923 | fully processed */ | |
50a2a691 AC |
924 | |
925 | /* Advance the time but *only* if there is nothing to process */ | |
926 | if (events->work_pending | |
927 | || events->time_from_event < n) | |
928 | { | |
4a203fba | 929 | events->nr_ticks_to_process += n; |
50a2a691 AC |
930 | return 1; |
931 | } | |
932 | else { | |
933 | events->time_from_event -= n; | |
934 | return 0; | |
935 | } | |
936 | } | |
937 | ||
938 | ||
4a203fba AC |
939 | INLINE_SIM_EVENTS\ |
940 | (void) | |
941 | sim_events_slip (SIM_DESC sd, | |
942 | int slip) | |
943 | { | |
944 | sim_events *events = STATE_EVENTS (sd); | |
945 | SIM_ASSERT (slip > 0); | |
946 | ||
947 | /* Advance either TIME_FROM_EVENT or NR_TICKS_TO_PROCESS dependant | |
948 | on which is closer for this SLIP. While previous slips may have | |
949 | advanced a different counter is sitll valid as the accumulative | |
950 | effect is still the same. */ | |
951 | if (events->time_from_event < slip) | |
952 | { | |
953 | events->nr_ticks_to_process += slip; | |
954 | events->work_pending = 1; | |
955 | } | |
956 | else | |
957 | { | |
958 | events->time_from_event -= slip; | |
959 | } | |
960 | } | |
961 | ||
962 | ||
f03b093c AC |
963 | INLINE_SIM_EVENTS\ |
964 | (void) | |
965 | sim_events_preprocess (SIM_DESC sd, | |
966 | int events_were_last, | |
967 | int events_were_next) | |
968 | { | |
969 | sim_events *events = STATE_EVENTS(sd); | |
4a203fba | 970 | if (events_were_last) |
f03b093c | 971 | { |
4a203fba AC |
972 | /* Halted part way through event processing */ |
973 | ASSERT (events->nr_ticks_to_process != 0); | |
974 | /* The external world can't tell if the event that stopped the | |
975 | simulator was the last event to process. */ | |
976 | ASSERT (events_were_next); | |
f03b093c AC |
977 | sim_events_process (sd); |
978 | } | |
979 | else if (events_were_next) | |
980 | { | |
981 | /* Halted by the last processor */ | |
f03b093c AC |
982 | if (sim_events_tick (sd)) |
983 | sim_events_process (sd); | |
984 | } | |
985 | } | |
986 | ||
8517f62b AC |
987 | |
988 | INLINE_SIM_EVENTS\ | |
989 | (void) | |
f03b093c | 990 | sim_events_process (SIM_DESC sd) |
8517f62b | 991 | { |
f03b093c | 992 | sim_events *events = STATE_EVENTS(sd); |
8517f62b AC |
993 | signed64 event_time = sim_events_time(sd); |
994 | ||
50a2a691 | 995 | ASSERT (events->nr_ticks_to_process != 0); |
8517f62b | 996 | |
4a203fba AC |
997 | /* Clear work_pending before checking nr_held. Clearing |
998 | work_pending after nr_held (with out a lock could loose an | |
999 | event). */ | |
1000 | events->work_pending = 0; | |
1001 | ||
1002 | /* move any events that were asynchronously queued by any signal | |
1003 | handlers onto the real event queue. */ | |
50a2a691 | 1004 | if (events->nr_held > 0) |
f03b093c | 1005 | { |
50a2a691 | 1006 | int i; |
f03b093c | 1007 | |
8517f62b | 1008 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
f03b093c AC |
1009 | /*-LOCK-*/ |
1010 | sigset_t old_mask; | |
1011 | sigset_t new_mask; | |
1012 | sigfillset(&new_mask); | |
1013 | sigprocmask(SIG_SETMASK, &new_mask, &old_mask); | |
8517f62b | 1014 | #endif |
4a203fba | 1015 | |
50a2a691 AC |
1016 | for (i = 0; i < events->nr_held; i++) |
1017 | { | |
1018 | sim_event *entry = &events->held [i]; | |
1019 | sim_events_schedule (sd, | |
1020 | entry->time_of_event, | |
1021 | entry->handler, | |
1022 | entry->data); | |
1023 | } | |
1024 | events->nr_held = 0; | |
f03b093c | 1025 | |
8517f62b | 1026 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
f03b093c AC |
1027 | /*-UNLOCK-*/ |
1028 | sigprocmask(SIG_SETMASK, &old_mask, NULL); | |
8517f62b | 1029 | #endif |
f03b093c | 1030 | |
f03b093c AC |
1031 | } |
1032 | ||
1033 | /* Process any watchpoints. Be careful to allow a watchpoint to | |
1034 | appear/disappear under our feet. | |
1035 | To ensure that watchpoints are processed only once per cycle, | |
1036 | they are moved onto a watched queue, this returned to the | |
1037 | watchpoint queue when all queue processing has been | |
1038 | completed. */ | |
1039 | while (events->watchpoints != NULL) | |
1040 | { | |
1041 | sim_event *to_do = events->watchpoints; | |
1042 | events->watchpoints = to_do->next; | |
1043 | if (sim_watch_valid (sd, to_do)) | |
1044 | { | |
1045 | sim_event_handler *handler = to_do->handler; | |
1046 | void *data = to_do->data; | |
f03b093c AC |
1047 | ETRACE((_ETRACE, |
1048 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx\n", | |
1049 | (long) event_time, | |
1050 | (long) to_do, | |
1051 | (long) handler, | |
1052 | (long) data)); | |
50a2a691 | 1053 | sim_events_free (sd, to_do); |
f03b093c AC |
1054 | handler (sd, data); |
1055 | } | |
1056 | else | |
1057 | { | |
1058 | to_do->next = events->watchedpoints; | |
1059 | events->watchedpoints = to_do; | |
1060 | } | |
1061 | } | |
1062 | ||
8517f62b | 1063 | /* consume all events for this or earlier times. Be careful to |
f03b093c | 1064 | allow an event to appear/disappear under our feet */ |
50a2a691 AC |
1065 | while (events->queue->time_of_event < |
1066 | (event_time + events->nr_ticks_to_process)) | |
f03b093c AC |
1067 | { |
1068 | sim_event *to_do = events->queue; | |
1069 | sim_event_handler *handler = to_do->handler; | |
1070 | void *data = to_do->data; | |
1071 | events->queue = to_do->next; | |
1072 | ETRACE((_ETRACE, | |
1073 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx\n", | |
1074 | (long) event_time, | |
1075 | (long) to_do, | |
1076 | (long) handler, | |
1077 | (long) data)); | |
50a2a691 | 1078 | sim_events_free (sd, to_do); |
f03b093c AC |
1079 | handler (sd, data); |
1080 | } | |
1081 | ||
1082 | /* put things back where they belong ready for the next iteration */ | |
1083 | events->watchpoints = events->watchedpoints; | |
1084 | events->watchedpoints = NULL; | |
1085 | if (events->watchpoints != NULL) | |
1086 | events->work_pending = 1; | |
1087 | ||
50a2a691 | 1088 | /* re-caculate time for new events then advance the time */ |
8517f62b | 1089 | update_time_from_event(sd); |
50a2a691 AC |
1090 | SIM_ASSERT (events->time_from_event >= events->nr_ticks_to_process); |
1091 | SIM_ASSERT (events->queue != NULL); /* always poll event */ | |
1092 | events->time_from_event -= events->nr_ticks_to_process; | |
1093 | ||
1094 | /* this round of processing complete */ | |
1095 | events->nr_ticks_to_process = 0; | |
8517f62b AC |
1096 | } |
1097 | ||
1098 | #endif |