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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
6aba47ca | 3 | Copyright 2002, 2007 Free Software Foundation, Inc. |
b85e4829 AC |
4 | |
5 | Contributed by Andrew Cagney and Red Hat. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
b85e4829 AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | ||
23 | #ifndef _SIM_EVENTS_C_ | |
24 | #define _SIM_EVENTS_C_ | |
25 | ||
26 | #include "sim-main.h" | |
27 | #include "sim-assert.h" | |
28 | ||
29 | #ifdef HAVE_STRING_H | |
30 | #include <string.h> | |
31 | #else | |
32 | #ifdef HAVE_STRINGS_H | |
33 | #include <strings.h> | |
34 | #endif | |
35 | #endif | |
36 | ||
37 | #ifdef HAVE_STDLIB_H | |
38 | #include <stdlib.h> | |
39 | #endif | |
40 | ||
6439295f | 41 | #include <signal.h> /* For SIGPROCMASK et al. */ |
c906108c | 42 | |
c906108c SS |
43 | typedef enum { |
44 | watch_invalid, | |
45 | ||
46 | /* core - target byte order */ | |
47 | watch_core_targ_1, | |
48 | watch_core_targ_2, | |
49 | watch_core_targ_4, | |
50 | watch_core_targ_8, | |
51 | /* core - big-endian */ | |
52 | watch_core_be_1, | |
53 | watch_core_be_2, | |
54 | watch_core_be_4, | |
55 | watch_core_be_8, | |
56 | /* core - little-endian */ | |
57 | watch_core_le_1, | |
58 | watch_core_le_2, | |
59 | watch_core_le_4, | |
60 | watch_core_le_8, | |
61 | ||
62 | /* sim - host byte order */ | |
63 | watch_sim_host_1, | |
64 | watch_sim_host_2, | |
65 | watch_sim_host_4, | |
66 | watch_sim_host_8, | |
67 | /* sim - big-endian */ | |
68 | watch_sim_be_1, | |
69 | watch_sim_be_2, | |
70 | watch_sim_be_4, | |
71 | watch_sim_be_8, | |
72 | /* sim - little-endian */ | |
73 | watch_sim_le_1, | |
74 | watch_sim_le_2, | |
75 | watch_sim_le_4, | |
76 | watch_sim_le_8, | |
77 | ||
78 | /* wallclock */ | |
79 | watch_clock, | |
80 | ||
81 | /* timer */ | |
82 | watch_timer, | |
83 | } sim_event_watchpoints; | |
84 | ||
85 | ||
86 | struct _sim_event { | |
87 | sim_event_watchpoints watching; | |
88 | void *data; | |
89 | sim_event_handler *handler; | |
90 | /* timer event */ | |
91 | signed64 time_of_event; | |
92 | /* watch wallclock event */ | |
93 | unsigned wallclock; | |
94 | /* watch core address */ | |
95 | address_word core_addr; | |
96 | unsigned core_map; | |
97 | /* watch sim addr */ | |
98 | void *host_addr; | |
99 | /* watch core/sim range */ | |
100 | int is_within; /* 0/1 */ | |
101 | unsigned ub; | |
102 | unsigned lb; | |
103 | unsigned64 ub64; | |
104 | unsigned64 lb64; | |
105 | /* trace info (if any) */ | |
106 | char *trace; | |
107 | /* list */ | |
108 | sim_event *next; | |
109 | }; | |
110 | ||
111 | ||
112 | /* The event queue maintains a single absolute time using two | |
113 | variables. | |
114 | ||
115 | TIME_OF_EVENT: this holds the time at which the next event is ment | |
6439295f | 116 | to occur. If no next event it will hold the time of the last |
c906108c SS |
117 | event. |
118 | ||
119 | TIME_FROM_EVENT: The current distance from TIME_OF_EVENT. A value | |
120 | <= 0 (except when poll-event is being processed) indicates that | |
121 | event processing is due. This variable is decremented once for | |
122 | each iteration of a clock cycle. | |
123 | ||
124 | Initially, the clock is started at time one (0) with TIME_OF_EVENT | |
125 | == 0 and TIME_FROM_EVENT == 0 and with NR_TICKS_TO_PROCESS == 1. | |
126 | ||
127 | Clearly there is a bug in that this code assumes that the absolute | |
128 | time counter will never become greater than 2^62. | |
129 | ||
130 | To avoid the need to use 64bit arithmetic, the event queue always | |
131 | contains at least one event scheduled every 16 000 ticks. This | |
132 | limits the time from event counter to values less than | |
133 | 16 000. */ | |
134 | ||
135 | ||
136 | #if !defined (SIM_EVENTS_POLL_RATE) | |
137 | #define SIM_EVENTS_POLL_RATE 0x1000 | |
138 | #endif | |
139 | ||
140 | ||
141 | #define _ETRACE sd, NULL | |
142 | ||
143 | #undef ETRACE_P | |
144 | #define ETRACE_P (WITH_TRACE && STATE_EVENTS (sd)->trace) | |
145 | ||
146 | #undef ETRACE | |
147 | #define ETRACE(ARGS) \ | |
148 | do \ | |
149 | { \ | |
150 | if (ETRACE_P) \ | |
151 | { \ | |
152 | if (STRACE_DEBUG_P (sd)) \ | |
153 | { \ | |
154 | const char *file; \ | |
155 | SIM_FILTER_PATH (file, __FILE__); \ | |
156 | trace_printf (sd, NULL, "%s:%d: ", file, __LINE__); \ | |
157 | } \ | |
158 | trace_printf ARGS; \ | |
159 | } \ | |
160 | } \ | |
161 | while (0) | |
162 | ||
163 | ||
164 | /* event queue iterator - don't iterate over the held queue. */ | |
165 | ||
166 | #if EXTERN_SIM_EVENTS_P | |
167 | static sim_event ** | |
168 | next_event_queue (SIM_DESC sd, | |
169 | sim_event **queue) | |
170 | { | |
171 | if (queue == NULL) | |
172 | return &STATE_EVENTS (sd)->queue; | |
173 | else if (queue == &STATE_EVENTS (sd)->queue) | |
174 | return &STATE_EVENTS (sd)->watchpoints; | |
175 | else if (queue == &STATE_EVENTS (sd)->watchpoints) | |
176 | return &STATE_EVENTS (sd)->watchedpoints; | |
177 | else if (queue == &STATE_EVENTS (sd)->watchedpoints) | |
178 | return NULL; | |
179 | else | |
180 | sim_io_error (sd, "next_event_queue - bad queue"); | |
181 | return NULL; | |
182 | } | |
183 | #endif | |
184 | ||
185 | ||
186 | STATIC_INLINE_SIM_EVENTS\ | |
187 | (void) | |
188 | sim_events_poll (SIM_DESC sd, | |
189 | void *data) | |
190 | { | |
191 | /* just re-schedule in 1000 million ticks time */ | |
192 | sim_events_schedule (sd, SIM_EVENTS_POLL_RATE, sim_events_poll, sd); | |
193 | sim_io_poll_quit (sd); | |
194 | } | |
195 | ||
196 | ||
197 | /* "events" module install handler. | |
198 | This is called via sim_module_install to install the "events" subsystem | |
199 | into the simulator. */ | |
200 | ||
201 | #if EXTERN_SIM_EVENTS_P | |
202 | STATIC_SIM_EVENTS (MODULE_UNINSTALL_FN) sim_events_uninstall; | |
203 | STATIC_SIM_EVENTS (MODULE_INIT_FN) sim_events_init; | |
204 | STATIC_SIM_EVENTS (MODULE_RESUME_FN) sim_events_resume; | |
205 | STATIC_SIM_EVENTS (MODULE_SUSPEND_FN) sim_events_suspend; | |
206 | #endif | |
207 | ||
208 | #if EXTERN_SIM_EVENTS_P | |
209 | SIM_RC | |
210 | sim_events_install (SIM_DESC sd) | |
211 | { | |
212 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
213 | sim_module_add_uninstall_fn (sd, sim_events_uninstall); | |
214 | sim_module_add_init_fn (sd, sim_events_init); | |
215 | sim_module_add_resume_fn (sd, sim_events_resume); | |
216 | sim_module_add_suspend_fn (sd, sim_events_suspend); | |
217 | return SIM_RC_OK; | |
218 | } | |
219 | #endif | |
220 | ||
221 | ||
222 | /* Suspend/resume the event queue manager when the simulator is not | |
223 | running */ | |
224 | ||
225 | #if EXTERN_SIM_EVENTS_P | |
226 | static SIM_RC | |
227 | sim_events_resume (SIM_DESC sd) | |
228 | { | |
229 | sim_events *events = STATE_EVENTS (sd); | |
230 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
231 | SIM_ASSERT (events->resume_wallclock == 0); | |
232 | events->resume_wallclock = sim_elapsed_time_get (); | |
233 | return SIM_RC_OK; | |
234 | } | |
235 | #endif | |
236 | ||
237 | #if EXTERN_SIM_EVENTS_P | |
238 | static SIM_RC | |
239 | sim_events_suspend (SIM_DESC sd) | |
240 | { | |
241 | sim_events *events = STATE_EVENTS (sd); | |
242 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
243 | SIM_ASSERT (events->resume_wallclock != 0); | |
244 | events->elapsed_wallclock += sim_elapsed_time_since (events->resume_wallclock); | |
245 | events->resume_wallclock = 0; | |
246 | return SIM_RC_OK; | |
247 | } | |
248 | #endif | |
249 | ||
250 | ||
251 | /* Uninstall the "events" subsystem from the simulator. */ | |
252 | ||
253 | #if EXTERN_SIM_EVENTS_P | |
254 | static void | |
255 | sim_events_uninstall (SIM_DESC sd) | |
256 | { | |
257 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
258 | /* FIXME: free buffers, etc. */ | |
259 | } | |
260 | #endif | |
261 | ||
262 | ||
263 | /* malloc/free */ | |
264 | ||
265 | #if EXTERN_SIM_EVENTS_P | |
266 | static sim_event * | |
267 | sim_events_zalloc (SIM_DESC sd) | |
268 | { | |
269 | sim_events *events = STATE_EVENTS (sd); | |
270 | sim_event *new = events->free_list; | |
271 | if (new != NULL) | |
272 | { | |
273 | events->free_list = new->next; | |
274 | memset (new, 0, sizeof (*new)); | |
275 | } | |
276 | else | |
277 | { | |
278 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
279 | /*-LOCK-*/ | |
280 | sigset_t old_mask; | |
281 | sigset_t new_mask; | |
282 | sigfillset(&new_mask); | |
283 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
284 | #endif | |
285 | new = ZALLOC (sim_event); | |
286 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
287 | /*-UNLOCK-*/ | |
288 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
289 | #endif | |
290 | } | |
291 | return new; | |
292 | } | |
293 | #endif | |
294 | ||
295 | STATIC_INLINE_SIM_EVENTS\ | |
296 | (void) | |
297 | sim_events_free (SIM_DESC sd, | |
298 | sim_event *dead) | |
299 | { | |
300 | sim_events *events = STATE_EVENTS (sd); | |
301 | dead->next = events->free_list; | |
302 | events->free_list = dead; | |
303 | if (dead->trace != NULL) | |
304 | { | |
305 | free (dead->trace); /* NB: asprintf returns a `free' buf */ | |
306 | dead->trace = NULL; | |
307 | } | |
308 | } | |
309 | ||
310 | ||
311 | /* Initialize the simulator event manager */ | |
312 | ||
313 | #if EXTERN_SIM_EVENTS_P | |
314 | SIM_RC | |
315 | sim_events_init (SIM_DESC sd) | |
316 | { | |
317 | sim_events *events = STATE_EVENTS (sd); | |
318 | ||
319 | /* drain the interrupt queue */ | |
320 | events->nr_held = 0; | |
321 | if (events->held == NULL) | |
322 | events->held = NZALLOC (sim_event, MAX_NR_SIGNAL_SIM_EVENTS); | |
323 | ||
324 | /* drain the normal queues */ | |
325 | { | |
326 | sim_event **queue = NULL; | |
327 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
328 | { | |
329 | if (queue == NULL) break; | |
330 | while (*queue != NULL) | |
331 | { | |
332 | sim_event *dead = *queue; | |
333 | *queue = dead->next; | |
334 | sim_events_free (sd, dead); | |
335 | } | |
336 | *queue = NULL; | |
337 | } | |
338 | } | |
339 | ||
340 | /* wind time back to zero */ | |
341 | events->nr_ticks_to_process = 1; /* start by doing queue */ | |
342 | events->time_of_event = 0; | |
343 | events->time_from_event = 0; | |
344 | events->elapsed_wallclock = 0; | |
345 | events->resume_wallclock = 0; | |
346 | ||
347 | /* schedule our initial counter event */ | |
348 | sim_events_schedule (sd, 0, sim_events_poll, sd); | |
349 | ||
350 | /* from now on, except when the large-int event is being processed | |
351 | the event queue is non empty */ | |
352 | SIM_ASSERT (events->queue != NULL); | |
353 | ||
354 | return SIM_RC_OK; | |
355 | } | |
356 | #endif | |
357 | ||
358 | ||
359 | INLINE_SIM_EVENTS\ | |
360 | (signed64) | |
361 | sim_events_time (SIM_DESC sd) | |
362 | { | |
363 | sim_events *events = STATE_EVENTS (sd); | |
364 | return (events->time_of_event - events->time_from_event); | |
365 | } | |
366 | ||
367 | ||
368 | INLINE_SIM_EVENTS\ | |
369 | (unsigned long) | |
370 | sim_events_elapsed_time (SIM_DESC sd) | |
371 | { | |
372 | unsigned long elapsed = STATE_EVENTS (sd)->elapsed_wallclock; | |
373 | ||
374 | /* Are we being called inside sim_resume? | |
375 | (Is there a simulation in progress?) */ | |
376 | if (STATE_EVENTS (sd)->resume_wallclock != 0) | |
377 | elapsed += sim_elapsed_time_since (STATE_EVENTS (sd)->resume_wallclock); | |
378 | ||
379 | return elapsed; | |
380 | } | |
381 | ||
382 | ||
38e64f35 AC |
383 | /* Returns the time that remains before the event is raised. */ |
384 | INLINE_SIM_EVENTS\ | |
385 | (signed64) | |
386 | sim_events_remain_time (SIM_DESC sd, sim_event *event) | |
387 | { | |
388 | if (event == 0) | |
389 | return 0; | |
390 | ||
391 | return (event->time_of_event - sim_events_time (sd)); | |
392 | } | |
393 | ||
394 | ||
395 | ||
c906108c SS |
396 | STATIC_INLINE_SIM_EVENTS\ |
397 | (void) | |
398 | update_time_from_event (SIM_DESC sd) | |
399 | { | |
400 | sim_events *events = STATE_EVENTS (sd); | |
401 | signed64 current_time = sim_events_time (sd); | |
402 | if (events->queue != NULL) | |
403 | { | |
404 | events->time_of_event = events->queue->time_of_event; | |
405 | events->time_from_event = (events->queue->time_of_event - current_time); | |
406 | } | |
407 | else | |
408 | { | |
409 | events->time_of_event = current_time - 1; | |
410 | events->time_from_event = -1; | |
411 | } | |
5eb1a8fa AC |
412 | if (ETRACE_P) |
413 | { | |
414 | sim_event *event; | |
415 | int i; | |
416 | for (event = events->queue, i = 0; | |
417 | event != NULL; | |
418 | event = event->next, i++) | |
419 | { | |
420 | ETRACE ((_ETRACE, | |
421 | "event time-from-event - time %ld, delta %ld - event %d, tag 0x%lx, time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
422 | (long)current_time, | |
423 | (long)events->time_from_event, | |
424 | i, | |
425 | (long)event, | |
426 | (long)event->time_of_event, | |
427 | (long)event->handler, | |
428 | (long)event->data, | |
429 | (event->trace != NULL) ? ", " : "", | |
430 | (event->trace != NULL) ? event->trace : "")); | |
431 | } | |
432 | } | |
c906108c SS |
433 | SIM_ASSERT (current_time == sim_events_time (sd)); |
434 | } | |
435 | ||
436 | ||
437 | #if EXTERN_SIM_EVENTS_P | |
438 | static void | |
439 | insert_sim_event (SIM_DESC sd, | |
440 | sim_event *new_event, | |
441 | signed64 delta) | |
442 | { | |
443 | sim_events *events = STATE_EVENTS (sd); | |
444 | sim_event *curr; | |
445 | sim_event **prev; | |
446 | signed64 time_of_event; | |
447 | ||
448 | if (delta < 0) | |
449 | sim_io_error (sd, "what is past is past!\n"); | |
450 | ||
6439295f | 451 | /* compute when the event should occur */ |
c906108c SS |
452 | time_of_event = sim_events_time (sd) + delta; |
453 | ||
454 | /* find the queue insertion point - things are time ordered */ | |
455 | prev = &events->queue; | |
456 | curr = events->queue; | |
457 | while (curr != NULL && time_of_event >= curr->time_of_event) | |
458 | { | |
459 | SIM_ASSERT (curr->next == NULL | |
460 | || curr->time_of_event <= curr->next->time_of_event); | |
461 | prev = &curr->next; | |
462 | curr = curr->next; | |
463 | } | |
464 | SIM_ASSERT (curr == NULL || time_of_event < curr->time_of_event); | |
465 | ||
466 | /* insert it */ | |
467 | new_event->next = curr; | |
468 | *prev = new_event; | |
469 | new_event->time_of_event = time_of_event; | |
470 | ||
471 | /* adjust the time until the first event */ | |
472 | update_time_from_event (sd); | |
473 | } | |
474 | #endif | |
475 | ||
476 | ||
477 | #if EXTERN_SIM_EVENTS_P | |
478 | sim_event * | |
479 | sim_events_schedule (SIM_DESC sd, | |
480 | signed64 delta_time, | |
481 | sim_event_handler *handler, | |
482 | void *data) | |
483 | { | |
484 | va_list dummy; | |
bf962092 | 485 | memset (&dummy, 0, sizeof dummy); |
c906108c SS |
486 | return sim_events_schedule_vtracef (sd, delta_time, handler, data, |
487 | NULL, dummy); | |
488 | } | |
489 | #endif | |
490 | ||
491 | ||
492 | #if EXTERN_SIM_EVENTS_P | |
493 | sim_event * | |
494 | sim_events_schedule_tracef (SIM_DESC sd, | |
495 | signed64 delta_time, | |
496 | sim_event_handler *handler, | |
497 | void *data, | |
498 | const char *fmt, | |
499 | ...) | |
500 | { | |
501 | sim_event *new_event; | |
502 | va_list ap; | |
503 | va_start (ap, fmt); | |
504 | new_event = sim_events_schedule_vtracef (sd, delta_time, handler, data, fmt, ap); | |
505 | va_end (ap); | |
506 | return new_event; | |
507 | } | |
508 | #endif | |
509 | ||
510 | ||
511 | #if EXTERN_SIM_EVENTS_P | |
512 | sim_event * | |
513 | sim_events_schedule_vtracef (SIM_DESC sd, | |
514 | signed64 delta_time, | |
515 | sim_event_handler *handler, | |
516 | void *data, | |
517 | const char *fmt, | |
518 | va_list ap) | |
519 | { | |
520 | sim_event *new_event = sim_events_zalloc (sd); | |
521 | new_event->data = data; | |
522 | new_event->handler = handler; | |
523 | new_event->watching = watch_timer; | |
524 | if (fmt == NULL || !ETRACE_P || vasprintf (&new_event->trace, fmt, ap) < 0) | |
525 | new_event->trace = NULL; | |
526 | insert_sim_event(sd, new_event, delta_time); | |
527 | ETRACE((_ETRACE, | |
528 | "event scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
529 | (long)sim_events_time(sd), | |
530 | (long)new_event, | |
531 | (long)new_event->time_of_event, | |
532 | (long)new_event->handler, | |
533 | (long)new_event->data, | |
534 | (new_event->trace != NULL) ? ", " : "", | |
535 | (new_event->trace != NULL) ? new_event->trace : "")); | |
536 | return new_event; | |
537 | } | |
538 | #endif | |
539 | ||
540 | ||
541 | #if EXTERN_SIM_EVENTS_P | |
542 | void | |
543 | sim_events_schedule_after_signal (SIM_DESC sd, | |
544 | signed64 delta_time, | |
545 | sim_event_handler *handler, | |
546 | void *data) | |
547 | { | |
548 | sim_events *events = STATE_EVENTS (sd); | |
549 | sim_event *new_event; | |
550 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
551 | /*-LOCK-*/ | |
552 | sigset_t old_mask; | |
553 | sigset_t new_mask; | |
554 | sigfillset(&new_mask); | |
555 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
556 | #endif | |
557 | ||
558 | /* allocate an event entry from the signal buffer */ | |
559 | new_event = &events->held [events->nr_held]; | |
560 | events->nr_held ++; | |
561 | if (events->nr_held > MAX_NR_SIGNAL_SIM_EVENTS) | |
562 | { | |
563 | sim_engine_abort (NULL, NULL, NULL_CIA, | |
564 | "sim_events_schedule_after_signal - buffer oveflow"); | |
565 | } | |
566 | ||
567 | new_event->data = data; | |
568 | new_event->handler = handler; | |
569 | new_event->time_of_event = delta_time; /* work it out later */ | |
570 | new_event->next = NULL; | |
571 | ||
572 | events->work_pending = 1; /* notify main process */ | |
573 | ||
574 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
575 | /*-UNLOCK-*/ | |
576 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
577 | #endif | |
578 | ||
579 | ETRACE ((_ETRACE, | |
580 | "signal scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
581 | (long)sim_events_time(sd), | |
582 | (long)new_event, | |
583 | (long)new_event->time_of_event, | |
584 | (long)new_event->handler, | |
585 | (long)new_event->data)); | |
586 | } | |
587 | #endif | |
588 | ||
589 | ||
590 | #if EXTERN_SIM_EVENTS_P | |
591 | sim_event * | |
592 | sim_events_watch_clock (SIM_DESC sd, | |
593 | unsigned delta_ms_time, | |
594 | sim_event_handler *handler, | |
595 | void *data) | |
596 | { | |
597 | sim_events *events = STATE_EVENTS (sd); | |
598 | sim_event *new_event = sim_events_zalloc (sd); | |
599 | /* type */ | |
600 | new_event->watching = watch_clock; | |
601 | /* handler */ | |
602 | new_event->data = data; | |
603 | new_event->handler = handler; | |
604 | /* data */ | |
605 | if (events->resume_wallclock == 0) | |
606 | new_event->wallclock = (events->elapsed_wallclock + delta_ms_time); | |
607 | else | |
608 | new_event->wallclock = (events->elapsed_wallclock | |
609 | + sim_elapsed_time_since (events->resume_wallclock) | |
610 | + delta_ms_time); | |
611 | /* insert */ | |
612 | new_event->next = events->watchpoints; | |
613 | events->watchpoints = new_event; | |
614 | events->work_pending = 1; | |
615 | ETRACE ((_ETRACE, | |
616 | "event watching clock at %ld - tag 0x%lx - wallclock %ld, handler 0x%lx, data 0x%lx\n", | |
617 | (long)sim_events_time (sd), | |
618 | (long)new_event, | |
619 | (long)new_event->wallclock, | |
620 | (long)new_event->handler, | |
621 | (long)new_event->data)); | |
622 | return new_event; | |
623 | } | |
624 | #endif | |
625 | ||
626 | ||
627 | #if EXTERN_SIM_EVENTS_P | |
628 | sim_event * | |
629 | sim_events_watch_sim (SIM_DESC sd, | |
630 | void *host_addr, | |
631 | int nr_bytes, | |
632 | int byte_order, | |
633 | int is_within, | |
634 | unsigned64 lb, | |
635 | unsigned64 ub, | |
636 | sim_event_handler *handler, | |
637 | void *data) | |
638 | { | |
639 | sim_events *events = STATE_EVENTS (sd); | |
640 | sim_event *new_event = sim_events_zalloc (sd); | |
641 | /* type */ | |
642 | switch (byte_order) | |
643 | { | |
644 | case 0: | |
645 | switch (nr_bytes) | |
646 | { | |
647 | case 1: new_event->watching = watch_sim_host_1; break; | |
648 | case 2: new_event->watching = watch_sim_host_2; break; | |
649 | case 4: new_event->watching = watch_sim_host_4; break; | |
650 | case 8: new_event->watching = watch_sim_host_8; break; | |
651 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
652 | } | |
653 | break; | |
654 | case BIG_ENDIAN: | |
655 | switch (nr_bytes) | |
656 | { | |
657 | case 1: new_event->watching = watch_sim_be_1; break; | |
658 | case 2: new_event->watching = watch_sim_be_2; break; | |
659 | case 4: new_event->watching = watch_sim_be_4; break; | |
660 | case 8: new_event->watching = watch_sim_be_8; break; | |
661 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
662 | } | |
663 | break; | |
664 | case LITTLE_ENDIAN: | |
665 | switch (nr_bytes) | |
666 | { | |
667 | case 1: new_event->watching = watch_sim_le_1; break; | |
668 | case 2: new_event->watching = watch_sim_le_2; break; | |
669 | case 4: new_event->watching = watch_sim_le_4; break; | |
670 | case 8: new_event->watching = watch_sim_le_8; break; | |
671 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
672 | } | |
673 | break; | |
674 | default: | |
675 | sim_io_error (sd, "sim_events_watch_sim - invalid byte order"); | |
676 | } | |
677 | /* handler */ | |
678 | new_event->data = data; | |
679 | new_event->handler = handler; | |
680 | /* data */ | |
681 | new_event->host_addr = host_addr; | |
682 | new_event->lb = lb; | |
683 | new_event->lb64 = lb; | |
684 | new_event->ub = ub; | |
685 | new_event->ub64 = ub; | |
686 | new_event->is_within = (is_within != 0); | |
687 | /* insert */ | |
688 | new_event->next = events->watchpoints; | |
689 | events->watchpoints = new_event; | |
690 | events->work_pending = 1; | |
691 | ETRACE ((_ETRACE, | |
692 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
693 | (long)sim_events_time (sd), | |
694 | (long)new_event, | |
695 | (long)new_event->host_addr, | |
696 | (long)new_event->lb, | |
697 | (long)new_event->ub, | |
698 | (long)new_event->handler, | |
699 | (long)new_event->data)); | |
700 | return new_event; | |
701 | } | |
702 | #endif | |
703 | ||
704 | ||
705 | #if EXTERN_SIM_EVENTS_P | |
706 | sim_event * | |
707 | sim_events_watch_core (SIM_DESC sd, | |
708 | address_word core_addr, | |
709 | unsigned core_map, | |
710 | int nr_bytes, | |
711 | int byte_order, | |
712 | int is_within, | |
713 | unsigned64 lb, | |
714 | unsigned64 ub, | |
715 | sim_event_handler *handler, | |
716 | void *data) | |
717 | { | |
718 | sim_events *events = STATE_EVENTS (sd); | |
719 | sim_event *new_event = sim_events_zalloc (sd); | |
720 | /* type */ | |
721 | switch (byte_order) | |
722 | { | |
723 | case 0: | |
724 | switch (nr_bytes) | |
725 | { | |
726 | case 1: new_event->watching = watch_core_targ_1; break; | |
727 | case 2: new_event->watching = watch_core_targ_2; break; | |
728 | case 4: new_event->watching = watch_core_targ_4; break; | |
729 | case 8: new_event->watching = watch_core_targ_8; break; | |
730 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
731 | } | |
732 | break; | |
733 | case BIG_ENDIAN: | |
734 | switch (nr_bytes) | |
735 | { | |
736 | case 1: new_event->watching = watch_core_be_1; break; | |
737 | case 2: new_event->watching = watch_core_be_2; break; | |
738 | case 4: new_event->watching = watch_core_be_4; break; | |
739 | case 8: new_event->watching = watch_core_be_8; break; | |
740 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
741 | } | |
742 | break; | |
743 | case LITTLE_ENDIAN: | |
744 | switch (nr_bytes) | |
745 | { | |
746 | case 1: new_event->watching = watch_core_le_1; break; | |
747 | case 2: new_event->watching = watch_core_le_2; break; | |
748 | case 4: new_event->watching = watch_core_le_4; break; | |
749 | case 8: new_event->watching = watch_core_le_8; break; | |
750 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
751 | } | |
752 | break; | |
753 | default: | |
754 | sim_io_error (sd, "sim_events_watch_core - invalid byte order"); | |
755 | } | |
756 | /* handler */ | |
757 | new_event->data = data; | |
758 | new_event->handler = handler; | |
759 | /* data */ | |
760 | new_event->core_addr = core_addr; | |
761 | new_event->core_map = core_map; | |
762 | new_event->lb = lb; | |
763 | new_event->lb64 = lb; | |
764 | new_event->ub = ub; | |
765 | new_event->ub64 = ub; | |
766 | new_event->is_within = (is_within != 0); | |
767 | /* insert */ | |
768 | new_event->next = events->watchpoints; | |
769 | events->watchpoints = new_event; | |
770 | events->work_pending = 1; | |
771 | ETRACE ((_ETRACE, | |
772 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
773 | (long)sim_events_time (sd), | |
774 | (long)new_event, | |
775 | (long)new_event->host_addr, | |
776 | (long)new_event->lb, | |
777 | (long)new_event->ub, | |
778 | (long)new_event->handler, | |
779 | (long)new_event->data)); | |
780 | return new_event; | |
781 | } | |
782 | #endif | |
783 | ||
784 | ||
785 | #if EXTERN_SIM_EVENTS_P | |
786 | void | |
787 | sim_events_deschedule (SIM_DESC sd, | |
788 | sim_event *event_to_remove) | |
789 | { | |
790 | sim_events *events = STATE_EVENTS (sd); | |
791 | sim_event *to_remove = (sim_event*)event_to_remove; | |
792 | if (event_to_remove != NULL) | |
793 | { | |
794 | sim_event **queue = NULL; | |
795 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
796 | { | |
797 | sim_event **ptr_to_current; | |
798 | for (ptr_to_current = queue; | |
799 | *ptr_to_current != NULL && *ptr_to_current != to_remove; | |
800 | ptr_to_current = &(*ptr_to_current)->next); | |
801 | if (*ptr_to_current == to_remove) | |
802 | { | |
803 | sim_event *dead = *ptr_to_current; | |
804 | *ptr_to_current = dead->next; | |
805 | ETRACE ((_ETRACE, | |
806 | "event/watch descheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
807 | (long) sim_events_time (sd), | |
808 | (long) event_to_remove, | |
809 | (long) dead->time_of_event, | |
810 | (long) dead->handler, | |
811 | (long) dead->data, | |
812 | (dead->trace != NULL) ? ", " : "", | |
813 | (dead->trace != NULL) ? dead->trace : "")); | |
814 | sim_events_free (sd, dead); | |
815 | update_time_from_event (sd); | |
816 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); | |
817 | return; | |
818 | } | |
819 | } | |
820 | } | |
821 | ETRACE ((_ETRACE, | |
822 | "event/watch descheduled at %ld - tag 0x%lx - not found\n", | |
823 | (long) sim_events_time (sd), | |
824 | (long) event_to_remove)); | |
825 | } | |
826 | #endif | |
827 | ||
828 | ||
829 | STATIC_INLINE_SIM_EVENTS\ | |
830 | (int) | |
831 | sim_watch_valid (SIM_DESC sd, | |
832 | sim_event *to_do) | |
833 | { | |
834 | switch (to_do->watching) | |
835 | { | |
836 | ||
837 | #define WATCH_CORE(N,OP,EXT) \ | |
838 | int ok; \ | |
839 | unsigned_##N word = 0; \ | |
840 | int nr_read = sim_core_read_buffer (sd, NULL, to_do->core_map, &word, \ | |
841 | to_do->core_addr, sizeof (word)); \ | |
842 | OP (word); \ | |
843 | ok = (nr_read == sizeof (unsigned_##N) \ | |
844 | && (to_do->is_within \ | |
845 | == (word >= to_do->lb##EXT \ | |
846 | && word <= to_do->ub##EXT))); | |
847 | ||
848 | case watch_core_targ_1: | |
849 | { | |
850 | WATCH_CORE (1, T2H,); | |
851 | return ok; | |
852 | } | |
853 | case watch_core_targ_2: | |
854 | { | |
855 | WATCH_CORE (2, T2H,); | |
856 | return ok; | |
857 | } | |
858 | case watch_core_targ_4: | |
859 | { | |
860 | WATCH_CORE (4, T2H,); | |
861 | return ok; | |
862 | } | |
863 | case watch_core_targ_8: | |
864 | { | |
865 | WATCH_CORE (8, T2H,64); | |
866 | return ok; | |
867 | } | |
868 | ||
869 | case watch_core_be_1: | |
870 | { | |
871 | WATCH_CORE (1, BE2H,); | |
872 | return ok; | |
873 | } | |
874 | case watch_core_be_2: | |
875 | { | |
876 | WATCH_CORE (2, BE2H,); | |
877 | return ok; | |
878 | } | |
879 | case watch_core_be_4: | |
880 | { | |
881 | WATCH_CORE (4, BE2H,); | |
882 | return ok; | |
883 | } | |
884 | case watch_core_be_8: | |
885 | { | |
886 | WATCH_CORE (8, BE2H,64); | |
887 | return ok; | |
888 | } | |
889 | ||
890 | case watch_core_le_1: | |
891 | { | |
892 | WATCH_CORE (1, LE2H,); | |
893 | return ok; | |
894 | } | |
895 | case watch_core_le_2: | |
896 | { | |
897 | WATCH_CORE (2, LE2H,); | |
898 | return ok; | |
899 | } | |
900 | case watch_core_le_4: | |
901 | { | |
902 | WATCH_CORE (4, LE2H,); | |
903 | return ok; | |
904 | } | |
905 | case watch_core_le_8: | |
906 | { | |
907 | WATCH_CORE (8, LE2H,64); | |
908 | return ok; | |
909 | } | |
910 | #undef WATCH_CORE | |
911 | ||
912 | #define WATCH_SIM(N,OP,EXT) \ | |
913 | int ok; \ | |
914 | unsigned_##N word = *(unsigned_##N*)to_do->host_addr; \ | |
915 | OP (word); \ | |
916 | ok = (to_do->is_within \ | |
917 | == (word >= to_do->lb##EXT \ | |
918 | && word <= to_do->ub##EXT)); | |
919 | ||
920 | case watch_sim_host_1: | |
921 | { | |
922 | WATCH_SIM (1, word = ,); | |
923 | return ok; | |
924 | } | |
925 | case watch_sim_host_2: | |
926 | { | |
927 | WATCH_SIM (2, word = ,); | |
928 | return ok; | |
929 | } | |
930 | case watch_sim_host_4: | |
931 | { | |
932 | WATCH_SIM (4, word = ,); | |
933 | return ok; | |
934 | } | |
935 | case watch_sim_host_8: | |
936 | { | |
937 | WATCH_SIM (8, word = ,64); | |
938 | return ok; | |
939 | } | |
940 | ||
941 | case watch_sim_be_1: | |
942 | { | |
943 | WATCH_SIM (1, BE2H,); | |
944 | return ok; | |
945 | } | |
946 | case watch_sim_be_2: | |
947 | { | |
948 | WATCH_SIM (2, BE2H,); | |
949 | return ok; | |
950 | } | |
951 | case watch_sim_be_4: | |
952 | { | |
953 | WATCH_SIM (4, BE2H,); | |
954 | return ok; | |
955 | } | |
956 | case watch_sim_be_8: | |
957 | { | |
958 | WATCH_SIM (8, BE2H,64); | |
959 | return ok; | |
960 | } | |
961 | ||
962 | case watch_sim_le_1: | |
963 | { | |
964 | WATCH_SIM (1, LE2H,); | |
965 | return ok; | |
966 | } | |
967 | case watch_sim_le_2: | |
968 | { | |
969 | WATCH_SIM (1, LE2H,); | |
970 | return ok; | |
971 | } | |
972 | case watch_sim_le_4: | |
973 | { | |
974 | WATCH_SIM (1, LE2H,); | |
975 | return ok; | |
976 | } | |
977 | case watch_sim_le_8: | |
978 | { | |
979 | WATCH_SIM (1, LE2H,64); | |
980 | return ok; | |
981 | } | |
982 | #undef WATCH_SIM | |
983 | ||
984 | case watch_clock: /* wallclock */ | |
985 | { | |
986 | unsigned long elapsed_time = sim_events_elapsed_time (sd); | |
987 | return (elapsed_time >= to_do->wallclock); | |
988 | } | |
989 | ||
990 | default: | |
991 | sim_io_error (sd, "sim_watch_valid - bad switch"); | |
992 | break; | |
993 | ||
994 | } | |
995 | return 1; | |
996 | } | |
997 | ||
998 | ||
999 | INLINE_SIM_EVENTS\ | |
1000 | (int) | |
1001 | sim_events_tick (SIM_DESC sd) | |
1002 | { | |
1003 | sim_events *events = STATE_EVENTS (sd); | |
1004 | ||
1005 | /* this should only be called after the previous ticks have been | |
1006 | fully processed */ | |
1007 | ||
1008 | /* Advance the time but *only* if there is nothing to process */ | |
1009 | if (events->work_pending | |
1010 | || events->time_from_event == 0) | |
1011 | { | |
1012 | events->nr_ticks_to_process += 1; | |
1013 | return 1; | |
1014 | } | |
1015 | else | |
1016 | { | |
1017 | events->time_from_event -= 1; | |
1018 | return 0; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | ||
1023 | INLINE_SIM_EVENTS\ | |
1024 | (int) | |
1025 | sim_events_tickn (SIM_DESC sd, | |
1026 | int n) | |
1027 | { | |
1028 | sim_events *events = STATE_EVENTS (sd); | |
1029 | SIM_ASSERT (n > 0); | |
1030 | ||
1031 | /* this should only be called after the previous ticks have been | |
1032 | fully processed */ | |
1033 | ||
1034 | /* Advance the time but *only* if there is nothing to process */ | |
1035 | if (events->work_pending || events->time_from_event < n) | |
1036 | { | |
1037 | events->nr_ticks_to_process += n; | |
1038 | return 1; | |
1039 | } | |
1040 | else | |
1041 | { | |
1042 | events->time_from_event -= n; | |
1043 | return 0; | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | ||
1048 | INLINE_SIM_EVENTS\ | |
1049 | (void) | |
1050 | sim_events_slip (SIM_DESC sd, | |
1051 | int slip) | |
1052 | { | |
1053 | sim_events *events = STATE_EVENTS (sd); | |
1054 | SIM_ASSERT (slip > 0); | |
1055 | ||
1056 | /* Flag a ready event with work_pending instead of number of ticks | |
1057 | to process so that the time continues to be correct */ | |
1058 | if (events->time_from_event < slip) | |
1059 | { | |
1060 | events->work_pending = 1; | |
1061 | } | |
1062 | events->time_from_event -= slip; | |
1063 | } | |
1064 | ||
1065 | ||
1066 | INLINE_SIM_EVENTS\ | |
1067 | (void) | |
1068 | sim_events_preprocess (SIM_DESC sd, | |
1069 | int events_were_last, | |
1070 | int events_were_next) | |
1071 | { | |
1072 | sim_events *events = STATE_EVENTS(sd); | |
1073 | if (events_were_last) | |
1074 | { | |
1075 | /* Halted part way through event processing */ | |
1076 | ASSERT (events->nr_ticks_to_process != 0); | |
1077 | /* The external world can't tell if the event that stopped the | |
1078 | simulator was the last event to process. */ | |
1079 | ASSERT (events_were_next); | |
1080 | sim_events_process (sd); | |
1081 | } | |
1082 | else if (events_were_next) | |
1083 | { | |
1084 | /* Halted by the last processor */ | |
1085 | if (sim_events_tick (sd)) | |
1086 | sim_events_process (sd); | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | ||
1091 | INLINE_SIM_EVENTS\ | |
1092 | (void) | |
1093 | sim_events_process (SIM_DESC sd) | |
1094 | { | |
1095 | sim_events *events = STATE_EVENTS(sd); | |
1096 | signed64 event_time = sim_events_time(sd); | |
1097 | ||
1098 | /* Clear work_pending before checking nr_held. Clearing | |
1099 | work_pending after nr_held (with out a lock could loose an | |
1100 | event). */ | |
1101 | events->work_pending = 0; | |
1102 | ||
1103 | /* move any events that were asynchronously queued by any signal | |
1104 | handlers onto the real event queue. */ | |
1105 | if (events->nr_held > 0) | |
1106 | { | |
1107 | int i; | |
1108 | ||
1109 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) | |
1110 | /*-LOCK-*/ | |
1111 | sigset_t old_mask; | |
1112 | sigset_t new_mask; | |
1113 | sigfillset(&new_mask); | |
1114 | sigprocmask(SIG_SETMASK, &new_mask, &old_mask); | |
1115 | #endif | |
1116 | ||
1117 | for (i = 0; i < events->nr_held; i++) | |
1118 | { | |
1119 | sim_event *entry = &events->held [i]; | |
1120 | sim_events_schedule (sd, | |
1121 | entry->time_of_event, | |
1122 | entry->handler, | |
1123 | entry->data); | |
1124 | } | |
1125 | events->nr_held = 0; | |
1126 | ||
1127 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) | |
1128 | /*-UNLOCK-*/ | |
1129 | sigprocmask(SIG_SETMASK, &old_mask, NULL); | |
1130 | #endif | |
1131 | ||
1132 | } | |
1133 | ||
1134 | /* Process any watchpoints. Be careful to allow a watchpoint to | |
1135 | appear/disappear under our feet. | |
1136 | To ensure that watchpoints are processed only once per cycle, | |
1137 | they are moved onto a watched queue, this returned to the | |
1138 | watchpoint queue when all queue processing has been | |
1139 | completed. */ | |
1140 | while (events->watchpoints != NULL) | |
1141 | { | |
1142 | sim_event *to_do = events->watchpoints; | |
1143 | events->watchpoints = to_do->next; | |
1144 | if (sim_watch_valid (sd, to_do)) | |
1145 | { | |
1146 | sim_event_handler *handler = to_do->handler; | |
1147 | void *data = to_do->data; | |
1148 | ETRACE((_ETRACE, | |
1149 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", | |
1150 | (long) event_time, | |
1151 | (long) to_do, | |
1152 | (long) handler, | |
1153 | (long) data, | |
1154 | (to_do->trace != NULL) ? ", " : "", | |
1155 | (to_do->trace != NULL) ? to_do->trace : "")); | |
1156 | sim_events_free (sd, to_do); | |
1157 | handler (sd, data); | |
1158 | } | |
1159 | else | |
1160 | { | |
1161 | to_do->next = events->watchedpoints; | |
1162 | events->watchedpoints = to_do; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | /* consume all events for this or earlier times. Be careful to | |
1167 | allow an event to appear/disappear under our feet */ | |
1168 | while (events->queue->time_of_event < | |
1169 | (event_time + events->nr_ticks_to_process)) | |
1170 | { | |
1171 | sim_event *to_do = events->queue; | |
1172 | sim_event_handler *handler = to_do->handler; | |
1173 | void *data = to_do->data; | |
1174 | events->queue = to_do->next; | |
1175 | update_time_from_event (sd); | |
1176 | ETRACE((_ETRACE, | |
1177 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", | |
1178 | (long) event_time, | |
1179 | (long) to_do, | |
1180 | (long) handler, | |
1181 | (long) data, | |
1182 | (to_do->trace != NULL) ? ", " : "", | |
1183 | (to_do->trace != NULL) ? to_do->trace : "")); | |
1184 | sim_events_free (sd, to_do); | |
1185 | handler (sd, data); | |
1186 | } | |
1187 | ||
1188 | /* put things back where they belong ready for the next iteration */ | |
1189 | events->watchpoints = events->watchedpoints; | |
1190 | events->watchedpoints = NULL; | |
1191 | if (events->watchpoints != NULL) | |
1192 | events->work_pending = 1; | |
1193 | ||
1194 | /* advance the time */ | |
1195 | SIM_ASSERT (events->time_from_event >= events->nr_ticks_to_process); | |
1196 | SIM_ASSERT (events->queue != NULL); /* always poll event */ | |
1197 | events->time_from_event -= events->nr_ticks_to_process; | |
1198 | ||
1199 | /* this round of processing complete */ | |
1200 | events->nr_ticks_to_process = 0; | |
c906108c SS |
1201 | } |
1202 | ||
1203 | #endif |