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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 | ||
28 | #include <signal.h> | |
29 | ||
f03b093c AC |
30 | typedef enum { |
31 | watch_invalid, | |
32 | ||
33 | /* core - target byte order */ | |
34 | watch_core_targ_1, | |
35 | watch_core_targ_2, | |
36 | watch_core_targ_4, | |
37 | watch_core_targ_8, | |
38 | /* core - big-endian */ | |
39 | watch_core_be_1, | |
40 | watch_core_be_2, | |
41 | watch_core_be_4, | |
42 | watch_core_be_8, | |
43 | /* core - little-endian */ | |
44 | watch_core_le_1, | |
45 | watch_core_le_2, | |
46 | watch_core_le_4, | |
47 | watch_core_le_8, | |
48 | ||
49 | /* sim - host byte order */ | |
50 | watch_sim_host_1, | |
51 | watch_sim_host_2, | |
52 | watch_sim_host_4, | |
53 | watch_sim_host_8, | |
54 | /* sim - big-endian */ | |
55 | watch_sim_be_1, | |
56 | watch_sim_be_2, | |
57 | watch_sim_be_4, | |
58 | watch_sim_be_8, | |
59 | /* sim - little-endian */ | |
60 | watch_sim_le_1, | |
61 | watch_sim_le_2, | |
62 | watch_sim_le_4, | |
63 | watch_sim_le_8, | |
64 | ||
65 | /* wallclock */ | |
66 | watch_clock, | |
67 | ||
68 | /* timer */ | |
69 | watch_timer, | |
70 | } sim_watchpoints; | |
71 | ||
72 | ||
73 | struct _sim_event { | |
74 | sim_watchpoints watching; | |
75 | void *data; | |
76 | sim_event_handler *handler; | |
77 | /* timer event */ | |
78 | signed64 time_of_event; | |
79 | /* watch wallclock event */ | |
80 | unsigned wallclock; | |
81 | /* watch core address */ | |
82 | address_word core_addr; | |
83 | sim_core_maps core_map; | |
84 | /* watch sim addr */ | |
85 | void *host_addr; | |
86 | /* watch core/sim range */ | |
87 | unsigned ub; | |
88 | unsigned lb; | |
89 | unsigned64 ub64; | |
90 | unsigned64 lb64; | |
91 | /* list */ | |
92 | sim_event *next; | |
93 | }; | |
94 | ||
8517f62b AC |
95 | |
96 | /* The event queue maintains a single absolute time using two | |
97 | variables. | |
98 | ||
99 | TIME_OF_EVENT: this holds the time at which the next event is ment | |
100 | to occure. If no next event it will hold the time of the last | |
101 | event. | |
102 | ||
103 | TIME_FROM_EVENT: The current distance from TIME_OF_EVENT. If an | |
104 | event is pending, this will be positive. If no future event is | |
105 | pending this will be negative. This variable is decremented once | |
106 | for each iteration of a clock cycle. | |
107 | ||
108 | Initially, the clock is started at time one (0) with TIME_OF_EVENT | |
109 | == 0 and TIME_FROM_EVENT == 0. | |
110 | ||
111 | Clearly there is a bug in that this code assumes that the absolute | |
112 | time counter will never become greater than 2^62. | |
113 | ||
114 | To avoid the need to use 64bit arithmetic, the event queue always | |
115 | contains at least one event scheduled every 16 000 ticks. This | |
116 | limits the time from event counter to values less than | |
117 | 16 000. */ | |
118 | ||
119 | ||
120 | #if !defined (SIM_EVENTS_POLL_RATE) | |
121 | #define SIM_EVENTS_POLL_RATE 0x4000 | |
122 | #endif | |
123 | ||
124 | ||
125 | #define _ETRACE sd | |
126 | ||
127 | #undef ETRACE | |
128 | #define ETRACE(ARGS) \ | |
129 | do \ | |
130 | { \ | |
131 | if (WITH_TRACE) \ | |
132 | { \ | |
f03b093c | 133 | if (STATE_EVENTS (sd)->trace) \ |
8517f62b AC |
134 | { \ |
135 | const char *file; \ | |
f03b093c | 136 | SIM_FILTER_PATH (file, __FILE__); \ |
8517f62b AC |
137 | sim_io_printf (sd, "%s:%d: ", file, __LINE__); \ |
138 | sim_io_printf ARGS; \ | |
139 | } \ | |
140 | } \ | |
141 | } \ | |
142 | while (0) | |
143 | ||
144 | ||
f03b093c AC |
145 | /* event queue iterator */ |
146 | STATIC_INLINE_SIM_EVENTS\ | |
147 | (sim_event **) | |
148 | next_event_queue (SIM_DESC sd, | |
149 | sim_event **queue) | |
150 | { | |
151 | if (queue == NULL) | |
152 | return &STATE_EVENTS (sd)->queue; | |
153 | else if (queue == &STATE_EVENTS (sd)->queue) | |
154 | return &STATE_EVENTS (sd)->watchpoints; | |
155 | else if (queue == &STATE_EVENTS (sd)->watchpoints) | |
156 | return &STATE_EVENTS (sd)->watchedpoints; | |
157 | else if (queue == &STATE_EVENTS (sd)->watchedpoints) | |
158 | return NULL; | |
159 | else | |
160 | sim_io_error (sd, "next_event_queue - bad queue"); | |
161 | return NULL; | |
162 | } | |
163 | ||
164 | ||
8517f62b AC |
165 | STATIC_INLINE_SIM_EVENTS\ |
166 | (void) | |
f03b093c AC |
167 | sim_events_poll (SIM_DESC sd, |
168 | void *data) | |
8517f62b AC |
169 | { |
170 | /* just re-schedule in 1000 million ticks time */ | |
f03b093c | 171 | sim_events_schedule (sd, SIM_EVENTS_POLL_RATE, sim_events_poll, sd); |
8517f62b AC |
172 | sim_io_poll_quit (sd); |
173 | } | |
174 | ||
175 | ||
f03b093c AC |
176 | /* "events" module install handler. |
177 | This is called via sim_module_install to install the "events" subsystem | |
178 | into the simulator. */ | |
179 | ||
180 | EXTERN_SIM_EVENTS\ | |
181 | (SIM_RC) | |
182 | sim_events_install (SIM_DESC sd) | |
183 | { | |
184 | sim_module_add_uninstall_fn (sd, sim_events_uninstall); | |
185 | sim_module_add_init_fn (sd, sim_events_init); | |
186 | return SIM_RC_OK; | |
187 | } | |
188 | ||
189 | ||
190 | /* Uninstall the "events" subsystem from the simulator. */ | |
191 | ||
192 | EXTERN_SIM_EVENTS\ | |
8517f62b | 193 | (void) |
f03b093c | 194 | sim_events_uninstall (SIM_DESC sd) |
8517f62b | 195 | { |
f03b093c AC |
196 | /* FIXME: free buffers, etc. */ |
197 | } | |
198 | ||
199 | ||
200 | /* Initialize the simulator event manager */ | |
201 | ||
202 | EXTERN_SIM_EVENTS\ | |
203 | (SIM_RC) | |
204 | sim_events_init (SIM_DESC sd) | |
205 | { | |
206 | sim_events *events = STATE_EVENTS (sd); | |
8517f62b AC |
207 | |
208 | /* drain the interrupt queue */ | |
209 | { | |
f03b093c | 210 | sim_event *event; |
8517f62b AC |
211 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
212 | sigset_t old_mask; | |
213 | sigset_t new_mask; | |
214 | sigfillset(&new_mask); | |
215 | /*-LOCK-*/ sigprocmask(SIG_SETMASK, &new_mask, &old_mask); | |
216 | #endif | |
217 | event = events->held; | |
218 | while (event != NULL) { | |
219 | sim_event *dead = event; | |
220 | event = event->next; | |
221 | zfree(dead); | |
222 | } | |
223 | events->held = NULL; | |
224 | events->held_end = &events->held; | |
f03b093c | 225 | events->work_pending = 0; |
8517f62b AC |
226 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
227 | /*-UNLOCK-*/ sigprocmask(SIG_SETMASK, &old_mask, NULL); | |
228 | #endif | |
229 | } | |
230 | ||
f03b093c AC |
231 | /* drain the normal queues */ |
232 | { | |
233 | sim_event **queue = NULL; | |
234 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
235 | { | |
236 | if (queue == NULL) break; | |
237 | while (*queue != NULL) | |
238 | { | |
239 | sim_event *dead = *queue; | |
240 | *queue = dead->next; | |
241 | zfree (dead); | |
242 | } | |
243 | *queue = NULL; | |
244 | } | |
8517f62b | 245 | } |
f03b093c | 246 | |
8517f62b | 247 | /* wind time back to zero */ |
f03b093c | 248 | events->processing = 1; /* start by doing queue */ |
8517f62b AC |
249 | events->time_of_event = 0; |
250 | events->time_from_event = 0; | |
f03b093c | 251 | events->initial_wallclock = sim_elapsed_time_get (); |
8517f62b AC |
252 | |
253 | /* schedule our initial counter event */ | |
f03b093c | 254 | sim_events_schedule (sd, 0, sim_events_poll, sd); |
8517f62b AC |
255 | |
256 | /* from now on, except when the large-int event is being processed | |
257 | the event queue is non empty */ | |
f03b093c AC |
258 | SIM_ASSERT (events->queue != NULL); |
259 | ||
260 | return SIM_RC_OK; | |
8517f62b AC |
261 | } |
262 | ||
f03b093c | 263 | |
8517f62b AC |
264 | INLINE_SIM_EVENTS\ |
265 | (signed64) | |
f03b093c | 266 | sim_events_time (SIM_DESC sd) |
8517f62b | 267 | { |
f03b093c | 268 | sim_events *events = STATE_EVENTS (sd); |
8517f62b AC |
269 | return events->time_of_event - events->time_from_event; |
270 | } | |
271 | ||
f03b093c | 272 | |
8517f62b AC |
273 | STATIC_INLINE_SIM_EVENTS\ |
274 | (void) | |
f03b093c | 275 | update_time_from_event (SIM_DESC sd) |
8517f62b | 276 | { |
f03b093c AC |
277 | sim_events *events = STATE_EVENTS (sd); |
278 | signed64 current_time = sim_events_time (sd); | |
279 | if (events->queue != NULL) | |
280 | { | |
281 | events->time_from_event = (events->queue->time_of_event - current_time); | |
282 | events->time_of_event = events->queue->time_of_event; | |
283 | } | |
284 | else | |
285 | { | |
286 | events->time_of_event = current_time - 1; | |
287 | events->time_from_event = -1; | |
288 | } | |
289 | SIM_ASSERT (current_time == sim_events_time (sd)); | |
290 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); | |
8517f62b AC |
291 | } |
292 | ||
f03b093c | 293 | |
8517f62b AC |
294 | STATIC_INLINE_SIM_EVENTS\ |
295 | (void) | |
f03b093c AC |
296 | insert_sim_event (SIM_DESC sd, |
297 | sim_event *new_event, | |
298 | signed64 delta) | |
8517f62b | 299 | { |
f03b093c | 300 | sim_events *events = STATE_EVENTS (sd); |
8517f62b AC |
301 | sim_event *curr; |
302 | sim_event **prev; | |
303 | signed64 time_of_event; | |
304 | ||
305 | if (delta < 0) | |
f03b093c AC |
306 | sim_io_error (sd, "what is past is past!\n"); |
307 | ||
8517f62b | 308 | /* compute when the event should occure */ |
f03b093c AC |
309 | time_of_event = sim_events_time (sd) + delta; |
310 | ||
8517f62b AC |
311 | /* find the queue insertion point - things are time ordered */ |
312 | prev = &events->queue; | |
313 | curr = events->queue; | |
f03b093c AC |
314 | while (curr != NULL && time_of_event >= curr->time_of_event) |
315 | { | |
316 | SIM_ASSERT (curr->next == NULL | |
317 | || curr->time_of_event <= curr->next->time_of_event); | |
318 | prev = &curr->next; | |
319 | curr = curr->next; | |
320 | } | |
321 | SIM_ASSERT (curr == NULL || time_of_event < curr->time_of_event); | |
322 | ||
8517f62b AC |
323 | /* insert it */ |
324 | new_event->next = curr; | |
325 | *prev = new_event; | |
326 | new_event->time_of_event = time_of_event; | |
f03b093c | 327 | |
8517f62b | 328 | /* adjust the time until the first event */ |
f03b093c | 329 | update_time_from_event (sd); |
8517f62b AC |
330 | } |
331 | ||
f03b093c AC |
332 | |
333 | EXTERN_SIM_EVENTS\ | |
8517f62b | 334 | (sim_event *) |
f03b093c AC |
335 | sim_events_schedule (SIM_DESC sd, |
336 | signed64 delta_time, | |
337 | sim_event_handler *handler, | |
338 | void *data) | |
8517f62b AC |
339 | { |
340 | sim_event *new_event = ZALLOC(sim_event); | |
341 | new_event->data = data; | |
342 | new_event->handler = handler; | |
f03b093c | 343 | new_event->watching = watch_timer; |
8517f62b AC |
344 | insert_sim_event(sd, new_event, delta_time); |
345 | ETRACE((_ETRACE, | |
346 | "event scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
347 | (long)sim_events_time(sd), | |
348 | (long)new_event, | |
349 | (long)new_event->time_of_event, | |
350 | (long)new_event->handler, | |
351 | (long)new_event->data)); | |
352 | return new_event; | |
353 | } | |
354 | ||
355 | ||
f03b093c | 356 | EXTERN_SIM_EVENTS\ |
8517f62b AC |
357 | (sim_event *) |
358 | sim_events_schedule_after_signal(SIM_DESC sd, | |
359 | signed64 delta_time, | |
360 | sim_event_handler *handler, | |
361 | void *data) | |
362 | { | |
f03b093c AC |
363 | sim_events *events = STATE_EVENTS (sd); |
364 | sim_event *new_event = ZALLOC (sim_event); | |
365 | ||
8517f62b AC |
366 | new_event->data = data; |
367 | new_event->handler = handler; | |
368 | new_event->time_of_event = delta_time; /* work it out later */ | |
369 | new_event->next = NULL; | |
f03b093c | 370 | |
8517f62b | 371 | { |
f03b093c AC |
372 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) |
373 | /*-LOCK-*/ | |
8517f62b AC |
374 | sigset_t old_mask; |
375 | sigset_t new_mask; | |
376 | sigfillset(&new_mask); | |
f03b093c | 377 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); |
8517f62b AC |
378 | #endif |
379 | if (events->held == NULL) { | |
380 | events->held = new_event; | |
381 | } | |
382 | else { | |
383 | *events->held_end = new_event; | |
384 | } | |
385 | events->held_end = &new_event->next; | |
f03b093c AC |
386 | events->work_pending = 1; /* notify main process */ |
387 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
388 | /*-UNLOCK-*/ | |
389 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
8517f62b AC |
390 | #endif |
391 | } | |
f03b093c AC |
392 | |
393 | ETRACE ((_ETRACE, | |
394 | "event scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
395 | (long)sim_events_time(sd), | |
396 | (long)new_event, | |
397 | (long)new_event->time_of_event, | |
398 | (long)new_event->handler, | |
399 | (long)new_event->data)); | |
400 | ||
401 | return new_event; | |
402 | } | |
8517f62b | 403 | |
8517f62b | 404 | |
f03b093c AC |
405 | EXTERN_SIM_EVENTS\ |
406 | (sim_event *) | |
407 | sim_events_watch_clock (SIM_DESC sd, | |
408 | unsigned wallclock_ms_time, | |
409 | sim_event_handler *handler, | |
410 | void *data) | |
411 | { | |
412 | sim_events *events = STATE_EVENTS (sd); | |
413 | sim_event *new_event = ZALLOC (sim_event); | |
414 | /* type */ | |
415 | new_event->watching = watch_clock; | |
416 | /* handler */ | |
417 | new_event->data = data; | |
418 | new_event->handler = handler; | |
419 | /* data */ | |
420 | new_event->wallclock = wallclock_ms_time; | |
421 | /* insert */ | |
422 | new_event->next = events->watchpoints; | |
423 | events->watchpoints = new_event; | |
424 | events->work_pending = 1; | |
425 | ETRACE ((_ETRACE, | |
426 | "event watching clock at %ld - tag 0x%lx - wallclock %ld, handler 0x%lx, data 0x%lx\n", | |
427 | (long)sim_events_time (sd), | |
428 | (long)new_event, | |
429 | (long)new_event->wallclock, | |
430 | (long)new_event->handler, | |
431 | (long)new_event->data)); | |
8517f62b AC |
432 | return new_event; |
433 | } | |
434 | ||
435 | ||
f03b093c AC |
436 | EXTERN_SIM_EVENTS\ |
437 | (sim_event *) | |
438 | sim_events_watch_sim (SIM_DESC sd, | |
439 | void *host_addr, | |
440 | int nr_bytes, | |
441 | int byte_order, | |
442 | unsigned64 lb, | |
443 | unsigned64 ub, | |
444 | sim_event_handler *handler, | |
445 | void *data) | |
446 | { | |
447 | sim_events *events = STATE_EVENTS (sd); | |
448 | sim_event *new_event = ZALLOC (sim_event); | |
449 | /* type */ | |
450 | switch (byte_order) | |
451 | { | |
452 | case 0: | |
453 | switch (nr_bytes) | |
454 | { | |
455 | case 1: new_event->watching = watch_sim_host_1; break; | |
456 | case 2: new_event->watching = watch_sim_host_2; break; | |
457 | case 4: new_event->watching = watch_sim_host_4; break; | |
458 | case 8: new_event->watching = watch_sim_host_8; break; | |
459 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
460 | } | |
461 | break; | |
462 | case BIG_ENDIAN: | |
463 | switch (nr_bytes) | |
464 | { | |
465 | case 1: new_event->watching = watch_sim_be_1; break; | |
466 | case 2: new_event->watching = watch_sim_be_2; break; | |
467 | case 4: new_event->watching = watch_sim_be_4; break; | |
468 | case 8: new_event->watching = watch_sim_be_8; break; | |
469 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
470 | } | |
471 | break; | |
472 | case LITTLE_ENDIAN: | |
473 | switch (nr_bytes) | |
474 | { | |
475 | case 1: new_event->watching = watch_sim_le_1; break; | |
476 | case 2: new_event->watching = watch_sim_le_2; break; | |
477 | case 4: new_event->watching = watch_sim_le_4; break; | |
478 | case 8: new_event->watching = watch_sim_le_8; break; | |
479 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
480 | } | |
481 | break; | |
482 | default: | |
483 | sim_io_error (sd, "sim_events_watch_sim - invalid byte order"); | |
484 | } | |
485 | /* handler */ | |
486 | new_event->data = data; | |
487 | new_event->handler = handler; | |
488 | /* data */ | |
489 | new_event->host_addr = host_addr; | |
490 | new_event->lb = lb; | |
491 | new_event->lb64 = lb; | |
492 | new_event->ub = ub; | |
493 | new_event->ub64 = ub; | |
494 | /* insert */ | |
495 | new_event->next = events->watchpoints; | |
496 | events->watchpoints = new_event; | |
497 | events->work_pending = 1; | |
498 | ETRACE ((_ETRACE, | |
499 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
500 | (long)sim_events_time (sd), | |
501 | (long)new_event, | |
502 | (long)new_event->host_addr, | |
503 | (long)new_event->lb, | |
504 | (long)new_event->ub, | |
505 | (long)new_event->handler, | |
506 | (long)new_event->data)); | |
507 | return new_event; | |
508 | } | |
509 | ||
510 | ||
511 | EXTERN_SIM_EVENTS\ | |
512 | (sim_event *) | |
513 | sim_events_watch_core (SIM_DESC sd, | |
514 | address_word core_addr, | |
515 | sim_core_maps core_map, | |
516 | int nr_bytes, | |
517 | int byte_order, | |
518 | unsigned64 lb, | |
519 | unsigned64 ub, | |
520 | sim_event_handler *handler, | |
521 | void *data) | |
522 | { | |
523 | sim_events *events = STATE_EVENTS (sd); | |
524 | sim_event *new_event = ZALLOC (sim_event); | |
525 | /* type */ | |
526 | switch (byte_order) | |
527 | { | |
528 | case 0: | |
529 | switch (nr_bytes) | |
530 | { | |
531 | case 1: new_event->watching = watch_core_targ_1; break; | |
532 | case 2: new_event->watching = watch_core_targ_2; break; | |
533 | case 4: new_event->watching = watch_core_targ_4; break; | |
534 | case 8: new_event->watching = watch_core_targ_8; break; | |
535 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
536 | } | |
537 | break; | |
538 | case BIG_ENDIAN: | |
539 | switch (nr_bytes) | |
540 | { | |
541 | case 1: new_event->watching = watch_core_be_1; break; | |
542 | case 2: new_event->watching = watch_core_be_2; break; | |
543 | case 4: new_event->watching = watch_core_be_4; break; | |
544 | case 8: new_event->watching = watch_core_be_8; break; | |
545 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
546 | } | |
547 | break; | |
548 | case LITTLE_ENDIAN: | |
549 | switch (nr_bytes) | |
550 | { | |
551 | case 1: new_event->watching = watch_core_le_1; break; | |
552 | case 2: new_event->watching = watch_core_le_2; break; | |
553 | case 4: new_event->watching = watch_core_le_4; break; | |
554 | case 8: new_event->watching = watch_core_le_8; break; | |
555 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
556 | } | |
557 | break; | |
558 | default: | |
559 | sim_io_error (sd, "sim_events_watch_core - invalid byte order"); | |
560 | } | |
561 | /* handler */ | |
562 | new_event->data = data; | |
563 | new_event->handler = handler; | |
564 | /* data */ | |
565 | new_event->core_addr = core_addr; | |
566 | new_event->core_map = core_map; | |
567 | new_event->lb = lb; | |
568 | new_event->lb64 = lb; | |
569 | new_event->ub = ub; | |
570 | new_event->ub64 = ub; | |
571 | /* insert */ | |
572 | new_event->next = events->watchpoints; | |
573 | events->watchpoints = new_event; | |
574 | events->work_pending = 1; | |
575 | ETRACE ((_ETRACE, | |
576 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
577 | (long)sim_events_time (sd), | |
578 | (long)new_event, | |
579 | (long)new_event->host_addr, | |
580 | (long)new_event->lb, | |
581 | (long)new_event->ub, | |
582 | (long)new_event->handler, | |
583 | (long)new_event->data)); | |
584 | return new_event; | |
585 | } | |
586 | ||
587 | ||
588 | EXTERN_SIM_EVENTS\ | |
8517f62b | 589 | (void) |
f03b093c AC |
590 | sim_events_deschedule (SIM_DESC sd, |
591 | sim_event *event_to_remove) | |
8517f62b | 592 | { |
f03b093c | 593 | sim_events *events = STATE_EVENTS (sd); |
8517f62b | 594 | sim_event *to_remove = (sim_event*)event_to_remove; |
f03b093c AC |
595 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); |
596 | if (event_to_remove != NULL) | |
597 | { | |
598 | sim_event **queue = NULL; | |
599 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
600 | { | |
601 | sim_event **ptr_to_current; | |
602 | for (ptr_to_current = queue; | |
603 | *ptr_to_current != NULL && *ptr_to_current != to_remove; | |
604 | ptr_to_current = &(*ptr_to_current)->next); | |
605 | if (*ptr_to_current == to_remove) | |
606 | { | |
607 | sim_event *dead = *ptr_to_current; | |
608 | *ptr_to_current = dead->next; | |
609 | ETRACE ((_ETRACE, | |
610 | "event/watch descheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
611 | (long) sim_events_time (sd), | |
612 | (long) event_to_remove, | |
613 | (long) dead->time_of_event, | |
614 | (long) dead->handler, | |
615 | (long) dead->data)); | |
616 | zfree (dead); | |
617 | update_time_from_event (sd); | |
618 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); | |
619 | return; | |
620 | } | |
621 | } | |
8517f62b | 622 | } |
f03b093c AC |
623 | ETRACE ((_ETRACE, |
624 | "event/watch descheduled at %ld - tag 0x%lx - not found\n", | |
625 | (long) sim_events_time (sd), | |
626 | (long) event_to_remove)); | |
8517f62b AC |
627 | } |
628 | ||
629 | ||
f03b093c AC |
630 | STATIC_INLINE_SIM_EVENTS\ |
631 | (int) | |
632 | sim_watch_valid (SIM_DESC sd, | |
633 | sim_event *to_do) | |
634 | { | |
635 | switch (to_do->watching) | |
636 | { | |
637 | ||
638 | #define WATCH_CORE(N,OP) \ | |
639 | { \ | |
640 | unsigned_##N word; \ | |
641 | sim_core_read_buffer (sd, to_do->core_map, &word, to_do->core_addr, sizeof (word)); \ | |
642 | OP (word); \ | |
643 | return (word >= to_do->lb && word <= to_do->ub); \ | |
644 | } | |
645 | ||
646 | case watch_core_targ_1: WATCH_CORE (1, T2H); | |
647 | case watch_core_targ_2: WATCH_CORE (2, T2H); | |
648 | case watch_core_targ_4: WATCH_CORE (4, T2H); | |
649 | case watch_core_targ_8: WATCH_CORE (8, T2H); | |
650 | ||
651 | case watch_core_be_1: WATCH_CORE (1, BE2H); | |
652 | case watch_core_be_2: WATCH_CORE (2, BE2H); | |
653 | case watch_core_be_4: WATCH_CORE (4, BE2H); | |
654 | case watch_core_be_8: WATCH_CORE (8, BE2H); | |
655 | ||
656 | case watch_core_le_1: WATCH_CORE (1, LE2H); | |
657 | case watch_core_le_2: WATCH_CORE (2, LE2H); | |
658 | case watch_core_le_4: WATCH_CORE (4, LE2H); | |
659 | case watch_core_le_8: WATCH_CORE (8, LE2H); | |
660 | ||
661 | #undef WATCH_CORE | |
662 | ||
663 | #define WATCH_SIM(N,OP) \ | |
664 | { \ | |
665 | unsigned_##N word = *(unsigned_##N*)to_do->host_addr; \ | |
666 | OP (word); \ | |
667 | return (word >= to_do->lb && word <= to_do->ub); \ | |
668 | } | |
669 | ||
670 | case watch_sim_host_1: WATCH_SIM (1, word = ); | |
671 | case watch_sim_host_2: WATCH_SIM (2, word = ); | |
672 | case watch_sim_host_4: WATCH_SIM (4, word = ); | |
673 | case watch_sim_host_8: WATCH_SIM (8, word = ); | |
674 | ||
675 | case watch_sim_be_1: WATCH_SIM (1, BE2H); | |
676 | case watch_sim_be_2: WATCH_SIM (2, BE2H); | |
677 | case watch_sim_be_4: WATCH_SIM (4, BE2H); | |
678 | case watch_sim_be_8: WATCH_SIM (8, BE2H); | |
679 | ||
680 | case watch_sim_le_1: WATCH_SIM (1, LE2H); | |
681 | case watch_sim_le_2: WATCH_SIM (1, LE2H); | |
682 | case watch_sim_le_4: WATCH_SIM (1, LE2H); | |
683 | case watch_sim_le_8: WATCH_SIM (1, LE2H); | |
684 | #undef WATCH_SIM | |
685 | ||
686 | case watch_clock: /* wallclock */ | |
687 | return (sim_elapsed_time_since (STATE_EVENTS (sd)->initial_wallclock) | |
688 | < to_do->wallclock); | |
689 | ||
690 | case watch_timer: | |
691 | case watch_invalid: | |
692 | sim_io_error (sd, "sim_watch_valid - bad switch"); | |
693 | break; | |
694 | ||
695 | } | |
696 | return 1; | |
697 | } | |
8517f62b AC |
698 | |
699 | ||
700 | INLINE_SIM_EVENTS\ | |
701 | (int) | |
f03b093c | 702 | sim_events_tick (SIM_DESC sd) |
8517f62b | 703 | { |
f03b093c | 704 | sim_events *events = STATE_EVENTS (sd); |
8517f62b | 705 | |
f03b093c | 706 | /* this should only be called after the previous tick has been fully |
8517f62b | 707 | processed */ |
f03b093c | 708 | SIM_ASSERT (!events->processing); |
8517f62b AC |
709 | |
710 | /* Advance the time but *only* if there is nothing to process */ | |
f03b093c AC |
711 | if (events->work_pending |
712 | || events->time_from_event == 0) | |
713 | { | |
714 | events->processing = 1; | |
715 | return 1; | |
716 | } | |
8517f62b AC |
717 | else { |
718 | events->time_from_event -= 1; | |
719 | return 0; | |
720 | } | |
721 | } | |
722 | ||
723 | ||
f03b093c AC |
724 | INLINE_SIM_EVENTS\ |
725 | (void) | |
726 | sim_events_preprocess (SIM_DESC sd, | |
727 | int events_were_last, | |
728 | int events_were_next) | |
729 | { | |
730 | sim_events *events = STATE_EVENTS(sd); | |
731 | if (events->processing) | |
732 | { | |
733 | /* Halted midway through event processing */ | |
734 | ASSERT (events_were_last && events_were_next); | |
735 | sim_events_process (sd); | |
736 | } | |
737 | else if (events_were_next) | |
738 | { | |
739 | /* Halted by the last processor */ | |
740 | ASSERT (!events->processing && !events_were_last); | |
741 | if (sim_events_tick (sd)) | |
742 | sim_events_process (sd); | |
743 | } | |
744 | } | |
745 | ||
8517f62b AC |
746 | |
747 | INLINE_SIM_EVENTS\ | |
748 | (void) | |
f03b093c | 749 | sim_events_process (SIM_DESC sd) |
8517f62b | 750 | { |
f03b093c | 751 | sim_events *events = STATE_EVENTS(sd); |
8517f62b AC |
752 | signed64 event_time = sim_events_time(sd); |
753 | ||
f03b093c | 754 | ASSERT (events->processing); |
8517f62b | 755 | |
f03b093c AC |
756 | /* move any events that were queued by any signal handlers onto |
757 | the real event queue. */ | |
758 | if (events->held != NULL) | |
759 | { | |
760 | sim_event *held_events; | |
761 | sim_event *curr_event; | |
762 | ||
8517f62b | 763 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
f03b093c AC |
764 | /*-LOCK-*/ |
765 | sigset_t old_mask; | |
766 | sigset_t new_mask; | |
767 | sigfillset(&new_mask); | |
768 | sigprocmask(SIG_SETMASK, &new_mask, &old_mask); | |
8517f62b | 769 | #endif |
f03b093c AC |
770 | |
771 | held_events = events->held; | |
772 | events->held = NULL; | |
773 | events->held_end = &events->held; | |
774 | events->work_pending = 0; | |
775 | ||
8517f62b | 776 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
f03b093c AC |
777 | /*-UNLOCK-*/ |
778 | sigprocmask(SIG_SETMASK, &old_mask, NULL); | |
8517f62b | 779 | #endif |
f03b093c AC |
780 | |
781 | do | |
782 | { | |
783 | curr_event = held_events; | |
784 | held_events = curr_event->next; | |
785 | insert_sim_event (sd, curr_event, | |
786 | curr_event->time_of_event); | |
787 | } | |
788 | while (held_events != NULL); | |
789 | } | |
790 | ||
791 | /* Process any watchpoints. Be careful to allow a watchpoint to | |
792 | appear/disappear under our feet. | |
793 | To ensure that watchpoints are processed only once per cycle, | |
794 | they are moved onto a watched queue, this returned to the | |
795 | watchpoint queue when all queue processing has been | |
796 | completed. */ | |
797 | while (events->watchpoints != NULL) | |
798 | { | |
799 | sim_event *to_do = events->watchpoints; | |
800 | events->watchpoints = to_do->next; | |
801 | if (sim_watch_valid (sd, to_do)) | |
802 | { | |
803 | sim_event_handler *handler = to_do->handler; | |
804 | void *data = to_do->data; | |
805 | events->queue = to_do->next; | |
806 | ETRACE((_ETRACE, | |
807 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx\n", | |
808 | (long) event_time, | |
809 | (long) to_do, | |
810 | (long) handler, | |
811 | (long) data)); | |
812 | zfree (to_do); | |
813 | handler (sd, data); | |
814 | } | |
815 | else | |
816 | { | |
817 | to_do->next = events->watchedpoints; | |
818 | events->watchedpoints = to_do; | |
819 | } | |
820 | } | |
821 | ||
8517f62b | 822 | /* consume all events for this or earlier times. Be careful to |
f03b093c AC |
823 | allow an event to appear/disappear under our feet */ |
824 | while (events->queue->time_of_event <= event_time) | |
825 | { | |
826 | sim_event *to_do = events->queue; | |
827 | sim_event_handler *handler = to_do->handler; | |
828 | void *data = to_do->data; | |
829 | events->queue = to_do->next; | |
830 | ETRACE((_ETRACE, | |
831 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx\n", | |
832 | (long) event_time, | |
833 | (long) to_do, | |
834 | (long) handler, | |
835 | (long) data)); | |
836 | zfree (to_do); | |
837 | handler (sd, data); | |
838 | } | |
839 | ||
840 | /* put things back where they belong ready for the next iteration */ | |
841 | events->watchpoints = events->watchedpoints; | |
842 | events->watchedpoints = NULL; | |
843 | if (events->watchpoints != NULL) | |
844 | events->work_pending = 1; | |
845 | ||
846 | /* this round of processing complete */ | |
8517f62b | 847 | events->processing = 0; |
f03b093c | 848 | |
8517f62b AC |
849 | /* re-caculate time for new events - advance the time */ |
850 | update_time_from_event(sd); | |
851 | SIM_ASSERT(events->time_from_event > 0 && events->queue != NULL); | |
852 | events->time_from_event -= 1; | |
853 | } | |
854 | ||
855 | #endif |