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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
3 | Copyright 2002 Free Software Foundation, Inc. | |
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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | ||
25 | #ifndef _SIM_EVENTS_C_ | |
26 | #define _SIM_EVENTS_C_ | |
27 | ||
28 | #include "sim-main.h" | |
29 | #include "sim-assert.h" | |
30 | ||
31 | #ifdef HAVE_STRING_H | |
32 | #include <string.h> | |
33 | #else | |
34 | #ifdef HAVE_STRINGS_H | |
35 | #include <strings.h> | |
36 | #endif | |
37 | #endif | |
38 | ||
39 | #ifdef HAVE_STDLIB_H | |
40 | #include <stdlib.h> | |
41 | #endif | |
42 | ||
6439295f | 43 | #include <signal.h> /* For SIGPROCMASK et al. */ |
c906108c | 44 | |
c906108c SS |
45 | typedef enum { |
46 | watch_invalid, | |
47 | ||
48 | /* core - target byte order */ | |
49 | watch_core_targ_1, | |
50 | watch_core_targ_2, | |
51 | watch_core_targ_4, | |
52 | watch_core_targ_8, | |
53 | /* core - big-endian */ | |
54 | watch_core_be_1, | |
55 | watch_core_be_2, | |
56 | watch_core_be_4, | |
57 | watch_core_be_8, | |
58 | /* core - little-endian */ | |
59 | watch_core_le_1, | |
60 | watch_core_le_2, | |
61 | watch_core_le_4, | |
62 | watch_core_le_8, | |
63 | ||
64 | /* sim - host byte order */ | |
65 | watch_sim_host_1, | |
66 | watch_sim_host_2, | |
67 | watch_sim_host_4, | |
68 | watch_sim_host_8, | |
69 | /* sim - big-endian */ | |
70 | watch_sim_be_1, | |
71 | watch_sim_be_2, | |
72 | watch_sim_be_4, | |
73 | watch_sim_be_8, | |
74 | /* sim - little-endian */ | |
75 | watch_sim_le_1, | |
76 | watch_sim_le_2, | |
77 | watch_sim_le_4, | |
78 | watch_sim_le_8, | |
79 | ||
80 | /* wallclock */ | |
81 | watch_clock, | |
82 | ||
83 | /* timer */ | |
84 | watch_timer, | |
85 | } sim_event_watchpoints; | |
86 | ||
87 | ||
88 | struct _sim_event { | |
89 | sim_event_watchpoints watching; | |
90 | void *data; | |
91 | sim_event_handler *handler; | |
92 | /* timer event */ | |
93 | signed64 time_of_event; | |
94 | /* watch wallclock event */ | |
95 | unsigned wallclock; | |
96 | /* watch core address */ | |
97 | address_word core_addr; | |
98 | unsigned core_map; | |
99 | /* watch sim addr */ | |
100 | void *host_addr; | |
101 | /* watch core/sim range */ | |
102 | int is_within; /* 0/1 */ | |
103 | unsigned ub; | |
104 | unsigned lb; | |
105 | unsigned64 ub64; | |
106 | unsigned64 lb64; | |
107 | /* trace info (if any) */ | |
108 | char *trace; | |
109 | /* list */ | |
110 | sim_event *next; | |
111 | }; | |
112 | ||
113 | ||
114 | /* The event queue maintains a single absolute time using two | |
115 | variables. | |
116 | ||
117 | TIME_OF_EVENT: this holds the time at which the next event is ment | |
6439295f | 118 | to occur. If no next event it will hold the time of the last |
c906108c SS |
119 | event. |
120 | ||
121 | TIME_FROM_EVENT: The current distance from TIME_OF_EVENT. A value | |
122 | <= 0 (except when poll-event is being processed) indicates that | |
123 | event processing is due. This variable is decremented once for | |
124 | each iteration of a clock cycle. | |
125 | ||
126 | Initially, the clock is started at time one (0) with TIME_OF_EVENT | |
127 | == 0 and TIME_FROM_EVENT == 0 and with NR_TICKS_TO_PROCESS == 1. | |
128 | ||
129 | Clearly there is a bug in that this code assumes that the absolute | |
130 | time counter will never become greater than 2^62. | |
131 | ||
132 | To avoid the need to use 64bit arithmetic, the event queue always | |
133 | contains at least one event scheduled every 16 000 ticks. This | |
134 | limits the time from event counter to values less than | |
135 | 16 000. */ | |
136 | ||
137 | ||
138 | #if !defined (SIM_EVENTS_POLL_RATE) | |
139 | #define SIM_EVENTS_POLL_RATE 0x1000 | |
140 | #endif | |
141 | ||
142 | ||
143 | #define _ETRACE sd, NULL | |
144 | ||
145 | #undef ETRACE_P | |
146 | #define ETRACE_P (WITH_TRACE && STATE_EVENTS (sd)->trace) | |
147 | ||
148 | #undef ETRACE | |
149 | #define ETRACE(ARGS) \ | |
150 | do \ | |
151 | { \ | |
152 | if (ETRACE_P) \ | |
153 | { \ | |
154 | if (STRACE_DEBUG_P (sd)) \ | |
155 | { \ | |
156 | const char *file; \ | |
157 | SIM_FILTER_PATH (file, __FILE__); \ | |
158 | trace_printf (sd, NULL, "%s:%d: ", file, __LINE__); \ | |
159 | } \ | |
160 | trace_printf ARGS; \ | |
161 | } \ | |
162 | } \ | |
163 | while (0) | |
164 | ||
165 | ||
166 | /* event queue iterator - don't iterate over the held queue. */ | |
167 | ||
168 | #if EXTERN_SIM_EVENTS_P | |
169 | static sim_event ** | |
170 | next_event_queue (SIM_DESC sd, | |
171 | sim_event **queue) | |
172 | { | |
173 | if (queue == NULL) | |
174 | return &STATE_EVENTS (sd)->queue; | |
175 | else if (queue == &STATE_EVENTS (sd)->queue) | |
176 | return &STATE_EVENTS (sd)->watchpoints; | |
177 | else if (queue == &STATE_EVENTS (sd)->watchpoints) | |
178 | return &STATE_EVENTS (sd)->watchedpoints; | |
179 | else if (queue == &STATE_EVENTS (sd)->watchedpoints) | |
180 | return NULL; | |
181 | else | |
182 | sim_io_error (sd, "next_event_queue - bad queue"); | |
183 | return NULL; | |
184 | } | |
185 | #endif | |
186 | ||
187 | ||
188 | STATIC_INLINE_SIM_EVENTS\ | |
189 | (void) | |
190 | sim_events_poll (SIM_DESC sd, | |
191 | void *data) | |
192 | { | |
193 | /* just re-schedule in 1000 million ticks time */ | |
194 | sim_events_schedule (sd, SIM_EVENTS_POLL_RATE, sim_events_poll, sd); | |
195 | sim_io_poll_quit (sd); | |
196 | } | |
197 | ||
198 | ||
199 | /* "events" module install handler. | |
200 | This is called via sim_module_install to install the "events" subsystem | |
201 | into the simulator. */ | |
202 | ||
203 | #if EXTERN_SIM_EVENTS_P | |
204 | STATIC_SIM_EVENTS (MODULE_UNINSTALL_FN) sim_events_uninstall; | |
205 | STATIC_SIM_EVENTS (MODULE_INIT_FN) sim_events_init; | |
206 | STATIC_SIM_EVENTS (MODULE_RESUME_FN) sim_events_resume; | |
207 | STATIC_SIM_EVENTS (MODULE_SUSPEND_FN) sim_events_suspend; | |
208 | #endif | |
209 | ||
210 | #if EXTERN_SIM_EVENTS_P | |
211 | SIM_RC | |
212 | sim_events_install (SIM_DESC sd) | |
213 | { | |
214 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
215 | sim_module_add_uninstall_fn (sd, sim_events_uninstall); | |
216 | sim_module_add_init_fn (sd, sim_events_init); | |
217 | sim_module_add_resume_fn (sd, sim_events_resume); | |
218 | sim_module_add_suspend_fn (sd, sim_events_suspend); | |
219 | return SIM_RC_OK; | |
220 | } | |
221 | #endif | |
222 | ||
223 | ||
224 | /* Suspend/resume the event queue manager when the simulator is not | |
225 | running */ | |
226 | ||
227 | #if EXTERN_SIM_EVENTS_P | |
228 | static SIM_RC | |
229 | sim_events_resume (SIM_DESC sd) | |
230 | { | |
231 | sim_events *events = STATE_EVENTS (sd); | |
232 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
233 | SIM_ASSERT (events->resume_wallclock == 0); | |
234 | events->resume_wallclock = sim_elapsed_time_get (); | |
235 | return SIM_RC_OK; | |
236 | } | |
237 | #endif | |
238 | ||
239 | #if EXTERN_SIM_EVENTS_P | |
240 | static SIM_RC | |
241 | sim_events_suspend (SIM_DESC sd) | |
242 | { | |
243 | sim_events *events = STATE_EVENTS (sd); | |
244 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
245 | SIM_ASSERT (events->resume_wallclock != 0); | |
246 | events->elapsed_wallclock += sim_elapsed_time_since (events->resume_wallclock); | |
247 | events->resume_wallclock = 0; | |
248 | return SIM_RC_OK; | |
249 | } | |
250 | #endif | |
251 | ||
252 | ||
253 | /* Uninstall the "events" subsystem from the simulator. */ | |
254 | ||
255 | #if EXTERN_SIM_EVENTS_P | |
256 | static void | |
257 | sim_events_uninstall (SIM_DESC sd) | |
258 | { | |
259 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
260 | /* FIXME: free buffers, etc. */ | |
261 | } | |
262 | #endif | |
263 | ||
264 | ||
265 | /* malloc/free */ | |
266 | ||
267 | #if EXTERN_SIM_EVENTS_P | |
268 | static sim_event * | |
269 | sim_events_zalloc (SIM_DESC sd) | |
270 | { | |
271 | sim_events *events = STATE_EVENTS (sd); | |
272 | sim_event *new = events->free_list; | |
273 | if (new != NULL) | |
274 | { | |
275 | events->free_list = new->next; | |
276 | memset (new, 0, sizeof (*new)); | |
277 | } | |
278 | else | |
279 | { | |
280 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
281 | /*-LOCK-*/ | |
282 | sigset_t old_mask; | |
283 | sigset_t new_mask; | |
284 | sigfillset(&new_mask); | |
285 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
286 | #endif | |
287 | new = ZALLOC (sim_event); | |
288 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
289 | /*-UNLOCK-*/ | |
290 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
291 | #endif | |
292 | } | |
293 | return new; | |
294 | } | |
295 | #endif | |
296 | ||
297 | STATIC_INLINE_SIM_EVENTS\ | |
298 | (void) | |
299 | sim_events_free (SIM_DESC sd, | |
300 | sim_event *dead) | |
301 | { | |
302 | sim_events *events = STATE_EVENTS (sd); | |
303 | dead->next = events->free_list; | |
304 | events->free_list = dead; | |
305 | if (dead->trace != NULL) | |
306 | { | |
307 | free (dead->trace); /* NB: asprintf returns a `free' buf */ | |
308 | dead->trace = NULL; | |
309 | } | |
310 | } | |
311 | ||
312 | ||
313 | /* Initialize the simulator event manager */ | |
314 | ||
315 | #if EXTERN_SIM_EVENTS_P | |
316 | SIM_RC | |
317 | sim_events_init (SIM_DESC sd) | |
318 | { | |
319 | sim_events *events = STATE_EVENTS (sd); | |
320 | ||
321 | /* drain the interrupt queue */ | |
322 | events->nr_held = 0; | |
323 | if (events->held == NULL) | |
324 | events->held = NZALLOC (sim_event, MAX_NR_SIGNAL_SIM_EVENTS); | |
325 | ||
326 | /* drain the normal queues */ | |
327 | { | |
328 | sim_event **queue = NULL; | |
329 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
330 | { | |
331 | if (queue == NULL) break; | |
332 | while (*queue != NULL) | |
333 | { | |
334 | sim_event *dead = *queue; | |
335 | *queue = dead->next; | |
336 | sim_events_free (sd, dead); | |
337 | } | |
338 | *queue = NULL; | |
339 | } | |
340 | } | |
341 | ||
342 | /* wind time back to zero */ | |
343 | events->nr_ticks_to_process = 1; /* start by doing queue */ | |
344 | events->time_of_event = 0; | |
345 | events->time_from_event = 0; | |
346 | events->elapsed_wallclock = 0; | |
347 | events->resume_wallclock = 0; | |
348 | ||
349 | /* schedule our initial counter event */ | |
350 | sim_events_schedule (sd, 0, sim_events_poll, sd); | |
351 | ||
352 | /* from now on, except when the large-int event is being processed | |
353 | the event queue is non empty */ | |
354 | SIM_ASSERT (events->queue != NULL); | |
355 | ||
356 | return SIM_RC_OK; | |
357 | } | |
358 | #endif | |
359 | ||
360 | ||
361 | INLINE_SIM_EVENTS\ | |
362 | (signed64) | |
363 | sim_events_time (SIM_DESC sd) | |
364 | { | |
365 | sim_events *events = STATE_EVENTS (sd); | |
366 | return (events->time_of_event - events->time_from_event); | |
367 | } | |
368 | ||
369 | ||
370 | INLINE_SIM_EVENTS\ | |
371 | (unsigned long) | |
372 | sim_events_elapsed_time (SIM_DESC sd) | |
373 | { | |
374 | unsigned long elapsed = STATE_EVENTS (sd)->elapsed_wallclock; | |
375 | ||
376 | /* Are we being called inside sim_resume? | |
377 | (Is there a simulation in progress?) */ | |
378 | if (STATE_EVENTS (sd)->resume_wallclock != 0) | |
379 | elapsed += sim_elapsed_time_since (STATE_EVENTS (sd)->resume_wallclock); | |
380 | ||
381 | return elapsed; | |
382 | } | |
383 | ||
384 | ||
38e64f35 AC |
385 | /* Returns the time that remains before the event is raised. */ |
386 | INLINE_SIM_EVENTS\ | |
387 | (signed64) | |
388 | sim_events_remain_time (SIM_DESC sd, sim_event *event) | |
389 | { | |
390 | if (event == 0) | |
391 | return 0; | |
392 | ||
393 | return (event->time_of_event - sim_events_time (sd)); | |
394 | } | |
395 | ||
396 | ||
397 | ||
c906108c SS |
398 | STATIC_INLINE_SIM_EVENTS\ |
399 | (void) | |
400 | update_time_from_event (SIM_DESC sd) | |
401 | { | |
402 | sim_events *events = STATE_EVENTS (sd); | |
403 | signed64 current_time = sim_events_time (sd); | |
404 | if (events->queue != NULL) | |
405 | { | |
406 | events->time_of_event = events->queue->time_of_event; | |
407 | events->time_from_event = (events->queue->time_of_event - current_time); | |
408 | } | |
409 | else | |
410 | { | |
411 | events->time_of_event = current_time - 1; | |
412 | events->time_from_event = -1; | |
413 | } | |
5eb1a8fa AC |
414 | if (ETRACE_P) |
415 | { | |
416 | sim_event *event; | |
417 | int i; | |
418 | for (event = events->queue, i = 0; | |
419 | event != NULL; | |
420 | event = event->next, i++) | |
421 | { | |
422 | ETRACE ((_ETRACE, | |
423 | "event time-from-event - time %ld, delta %ld - event %d, tag 0x%lx, time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
424 | (long)current_time, | |
425 | (long)events->time_from_event, | |
426 | i, | |
427 | (long)event, | |
428 | (long)event->time_of_event, | |
429 | (long)event->handler, | |
430 | (long)event->data, | |
431 | (event->trace != NULL) ? ", " : "", | |
432 | (event->trace != NULL) ? event->trace : "")); | |
433 | } | |
434 | } | |
c906108c SS |
435 | SIM_ASSERT (current_time == sim_events_time (sd)); |
436 | } | |
437 | ||
438 | ||
439 | #if EXTERN_SIM_EVENTS_P | |
440 | static void | |
441 | insert_sim_event (SIM_DESC sd, | |
442 | sim_event *new_event, | |
443 | signed64 delta) | |
444 | { | |
445 | sim_events *events = STATE_EVENTS (sd); | |
446 | sim_event *curr; | |
447 | sim_event **prev; | |
448 | signed64 time_of_event; | |
449 | ||
450 | if (delta < 0) | |
451 | sim_io_error (sd, "what is past is past!\n"); | |
452 | ||
6439295f | 453 | /* compute when the event should occur */ |
c906108c SS |
454 | time_of_event = sim_events_time (sd) + delta; |
455 | ||
456 | /* find the queue insertion point - things are time ordered */ | |
457 | prev = &events->queue; | |
458 | curr = events->queue; | |
459 | while (curr != NULL && time_of_event >= curr->time_of_event) | |
460 | { | |
461 | SIM_ASSERT (curr->next == NULL | |
462 | || curr->time_of_event <= curr->next->time_of_event); | |
463 | prev = &curr->next; | |
464 | curr = curr->next; | |
465 | } | |
466 | SIM_ASSERT (curr == NULL || time_of_event < curr->time_of_event); | |
467 | ||
468 | /* insert it */ | |
469 | new_event->next = curr; | |
470 | *prev = new_event; | |
471 | new_event->time_of_event = time_of_event; | |
472 | ||
473 | /* adjust the time until the first event */ | |
474 | update_time_from_event (sd); | |
475 | } | |
476 | #endif | |
477 | ||
478 | ||
479 | #if EXTERN_SIM_EVENTS_P | |
480 | sim_event * | |
481 | sim_events_schedule (SIM_DESC sd, | |
482 | signed64 delta_time, | |
483 | sim_event_handler *handler, | |
484 | void *data) | |
485 | { | |
486 | va_list dummy; | |
bf962092 | 487 | memset (&dummy, 0, sizeof dummy); |
c906108c SS |
488 | return sim_events_schedule_vtracef (sd, delta_time, handler, data, |
489 | NULL, dummy); | |
490 | } | |
491 | #endif | |
492 | ||
493 | ||
494 | #if EXTERN_SIM_EVENTS_P | |
495 | sim_event * | |
496 | sim_events_schedule_tracef (SIM_DESC sd, | |
497 | signed64 delta_time, | |
498 | sim_event_handler *handler, | |
499 | void *data, | |
500 | const char *fmt, | |
501 | ...) | |
502 | { | |
503 | sim_event *new_event; | |
504 | va_list ap; | |
505 | va_start (ap, fmt); | |
506 | new_event = sim_events_schedule_vtracef (sd, delta_time, handler, data, fmt, ap); | |
507 | va_end (ap); | |
508 | return new_event; | |
509 | } | |
510 | #endif | |
511 | ||
512 | ||
513 | #if EXTERN_SIM_EVENTS_P | |
514 | sim_event * | |
515 | sim_events_schedule_vtracef (SIM_DESC sd, | |
516 | signed64 delta_time, | |
517 | sim_event_handler *handler, | |
518 | void *data, | |
519 | const char *fmt, | |
520 | va_list ap) | |
521 | { | |
522 | sim_event *new_event = sim_events_zalloc (sd); | |
523 | new_event->data = data; | |
524 | new_event->handler = handler; | |
525 | new_event->watching = watch_timer; | |
526 | if (fmt == NULL || !ETRACE_P || vasprintf (&new_event->trace, fmt, ap) < 0) | |
527 | new_event->trace = NULL; | |
528 | insert_sim_event(sd, new_event, delta_time); | |
529 | ETRACE((_ETRACE, | |
530 | "event scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
531 | (long)sim_events_time(sd), | |
532 | (long)new_event, | |
533 | (long)new_event->time_of_event, | |
534 | (long)new_event->handler, | |
535 | (long)new_event->data, | |
536 | (new_event->trace != NULL) ? ", " : "", | |
537 | (new_event->trace != NULL) ? new_event->trace : "")); | |
538 | return new_event; | |
539 | } | |
540 | #endif | |
541 | ||
542 | ||
543 | #if EXTERN_SIM_EVENTS_P | |
544 | void | |
545 | sim_events_schedule_after_signal (SIM_DESC sd, | |
546 | signed64 delta_time, | |
547 | sim_event_handler *handler, | |
548 | void *data) | |
549 | { | |
550 | sim_events *events = STATE_EVENTS (sd); | |
551 | sim_event *new_event; | |
552 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
553 | /*-LOCK-*/ | |
554 | sigset_t old_mask; | |
555 | sigset_t new_mask; | |
556 | sigfillset(&new_mask); | |
557 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
558 | #endif | |
559 | ||
560 | /* allocate an event entry from the signal buffer */ | |
561 | new_event = &events->held [events->nr_held]; | |
562 | events->nr_held ++; | |
563 | if (events->nr_held > MAX_NR_SIGNAL_SIM_EVENTS) | |
564 | { | |
565 | sim_engine_abort (NULL, NULL, NULL_CIA, | |
566 | "sim_events_schedule_after_signal - buffer oveflow"); | |
567 | } | |
568 | ||
569 | new_event->data = data; | |
570 | new_event->handler = handler; | |
571 | new_event->time_of_event = delta_time; /* work it out later */ | |
572 | new_event->next = NULL; | |
573 | ||
574 | events->work_pending = 1; /* notify main process */ | |
575 | ||
576 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
577 | /*-UNLOCK-*/ | |
578 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
579 | #endif | |
580 | ||
581 | ETRACE ((_ETRACE, | |
582 | "signal scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
583 | (long)sim_events_time(sd), | |
584 | (long)new_event, | |
585 | (long)new_event->time_of_event, | |
586 | (long)new_event->handler, | |
587 | (long)new_event->data)); | |
588 | } | |
589 | #endif | |
590 | ||
591 | ||
592 | #if EXTERN_SIM_EVENTS_P | |
593 | sim_event * | |
594 | sim_events_watch_clock (SIM_DESC sd, | |
595 | unsigned delta_ms_time, | |
596 | sim_event_handler *handler, | |
597 | void *data) | |
598 | { | |
599 | sim_events *events = STATE_EVENTS (sd); | |
600 | sim_event *new_event = sim_events_zalloc (sd); | |
601 | /* type */ | |
602 | new_event->watching = watch_clock; | |
603 | /* handler */ | |
604 | new_event->data = data; | |
605 | new_event->handler = handler; | |
606 | /* data */ | |
607 | if (events->resume_wallclock == 0) | |
608 | new_event->wallclock = (events->elapsed_wallclock + delta_ms_time); | |
609 | else | |
610 | new_event->wallclock = (events->elapsed_wallclock | |
611 | + sim_elapsed_time_since (events->resume_wallclock) | |
612 | + delta_ms_time); | |
613 | /* insert */ | |
614 | new_event->next = events->watchpoints; | |
615 | events->watchpoints = new_event; | |
616 | events->work_pending = 1; | |
617 | ETRACE ((_ETRACE, | |
618 | "event watching clock at %ld - tag 0x%lx - wallclock %ld, handler 0x%lx, data 0x%lx\n", | |
619 | (long)sim_events_time (sd), | |
620 | (long)new_event, | |
621 | (long)new_event->wallclock, | |
622 | (long)new_event->handler, | |
623 | (long)new_event->data)); | |
624 | return new_event; | |
625 | } | |
626 | #endif | |
627 | ||
628 | ||
629 | #if EXTERN_SIM_EVENTS_P | |
630 | sim_event * | |
631 | sim_events_watch_sim (SIM_DESC sd, | |
632 | void *host_addr, | |
633 | int nr_bytes, | |
634 | int byte_order, | |
635 | int is_within, | |
636 | unsigned64 lb, | |
637 | unsigned64 ub, | |
638 | sim_event_handler *handler, | |
639 | void *data) | |
640 | { | |
641 | sim_events *events = STATE_EVENTS (sd); | |
642 | sim_event *new_event = sim_events_zalloc (sd); | |
643 | /* type */ | |
644 | switch (byte_order) | |
645 | { | |
646 | case 0: | |
647 | switch (nr_bytes) | |
648 | { | |
649 | case 1: new_event->watching = watch_sim_host_1; break; | |
650 | case 2: new_event->watching = watch_sim_host_2; break; | |
651 | case 4: new_event->watching = watch_sim_host_4; break; | |
652 | case 8: new_event->watching = watch_sim_host_8; break; | |
653 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
654 | } | |
655 | break; | |
656 | case BIG_ENDIAN: | |
657 | switch (nr_bytes) | |
658 | { | |
659 | case 1: new_event->watching = watch_sim_be_1; break; | |
660 | case 2: new_event->watching = watch_sim_be_2; break; | |
661 | case 4: new_event->watching = watch_sim_be_4; break; | |
662 | case 8: new_event->watching = watch_sim_be_8; break; | |
663 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
664 | } | |
665 | break; | |
666 | case LITTLE_ENDIAN: | |
667 | switch (nr_bytes) | |
668 | { | |
669 | case 1: new_event->watching = watch_sim_le_1; break; | |
670 | case 2: new_event->watching = watch_sim_le_2; break; | |
671 | case 4: new_event->watching = watch_sim_le_4; break; | |
672 | case 8: new_event->watching = watch_sim_le_8; break; | |
673 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
674 | } | |
675 | break; | |
676 | default: | |
677 | sim_io_error (sd, "sim_events_watch_sim - invalid byte order"); | |
678 | } | |
679 | /* handler */ | |
680 | new_event->data = data; | |
681 | new_event->handler = handler; | |
682 | /* data */ | |
683 | new_event->host_addr = host_addr; | |
684 | new_event->lb = lb; | |
685 | new_event->lb64 = lb; | |
686 | new_event->ub = ub; | |
687 | new_event->ub64 = ub; | |
688 | new_event->is_within = (is_within != 0); | |
689 | /* insert */ | |
690 | new_event->next = events->watchpoints; | |
691 | events->watchpoints = new_event; | |
692 | events->work_pending = 1; | |
693 | ETRACE ((_ETRACE, | |
694 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
695 | (long)sim_events_time (sd), | |
696 | (long)new_event, | |
697 | (long)new_event->host_addr, | |
698 | (long)new_event->lb, | |
699 | (long)new_event->ub, | |
700 | (long)new_event->handler, | |
701 | (long)new_event->data)); | |
702 | return new_event; | |
703 | } | |
704 | #endif | |
705 | ||
706 | ||
707 | #if EXTERN_SIM_EVENTS_P | |
708 | sim_event * | |
709 | sim_events_watch_core (SIM_DESC sd, | |
710 | address_word core_addr, | |
711 | unsigned core_map, | |
712 | int nr_bytes, | |
713 | int byte_order, | |
714 | int is_within, | |
715 | unsigned64 lb, | |
716 | unsigned64 ub, | |
717 | sim_event_handler *handler, | |
718 | void *data) | |
719 | { | |
720 | sim_events *events = STATE_EVENTS (sd); | |
721 | sim_event *new_event = sim_events_zalloc (sd); | |
722 | /* type */ | |
723 | switch (byte_order) | |
724 | { | |
725 | case 0: | |
726 | switch (nr_bytes) | |
727 | { | |
728 | case 1: new_event->watching = watch_core_targ_1; break; | |
729 | case 2: new_event->watching = watch_core_targ_2; break; | |
730 | case 4: new_event->watching = watch_core_targ_4; break; | |
731 | case 8: new_event->watching = watch_core_targ_8; break; | |
732 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
733 | } | |
734 | break; | |
735 | case BIG_ENDIAN: | |
736 | switch (nr_bytes) | |
737 | { | |
738 | case 1: new_event->watching = watch_core_be_1; break; | |
739 | case 2: new_event->watching = watch_core_be_2; break; | |
740 | case 4: new_event->watching = watch_core_be_4; break; | |
741 | case 8: new_event->watching = watch_core_be_8; break; | |
742 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
743 | } | |
744 | break; | |
745 | case LITTLE_ENDIAN: | |
746 | switch (nr_bytes) | |
747 | { | |
748 | case 1: new_event->watching = watch_core_le_1; break; | |
749 | case 2: new_event->watching = watch_core_le_2; break; | |
750 | case 4: new_event->watching = watch_core_le_4; break; | |
751 | case 8: new_event->watching = watch_core_le_8; break; | |
752 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
753 | } | |
754 | break; | |
755 | default: | |
756 | sim_io_error (sd, "sim_events_watch_core - invalid byte order"); | |
757 | } | |
758 | /* handler */ | |
759 | new_event->data = data; | |
760 | new_event->handler = handler; | |
761 | /* data */ | |
762 | new_event->core_addr = core_addr; | |
763 | new_event->core_map = core_map; | |
764 | new_event->lb = lb; | |
765 | new_event->lb64 = lb; | |
766 | new_event->ub = ub; | |
767 | new_event->ub64 = ub; | |
768 | new_event->is_within = (is_within != 0); | |
769 | /* insert */ | |
770 | new_event->next = events->watchpoints; | |
771 | events->watchpoints = new_event; | |
772 | events->work_pending = 1; | |
773 | ETRACE ((_ETRACE, | |
774 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
775 | (long)sim_events_time (sd), | |
776 | (long)new_event, | |
777 | (long)new_event->host_addr, | |
778 | (long)new_event->lb, | |
779 | (long)new_event->ub, | |
780 | (long)new_event->handler, | |
781 | (long)new_event->data)); | |
782 | return new_event; | |
783 | } | |
784 | #endif | |
785 | ||
786 | ||
787 | #if EXTERN_SIM_EVENTS_P | |
788 | void | |
789 | sim_events_deschedule (SIM_DESC sd, | |
790 | sim_event *event_to_remove) | |
791 | { | |
792 | sim_events *events = STATE_EVENTS (sd); | |
793 | sim_event *to_remove = (sim_event*)event_to_remove; | |
794 | if (event_to_remove != NULL) | |
795 | { | |
796 | sim_event **queue = NULL; | |
797 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
798 | { | |
799 | sim_event **ptr_to_current; | |
800 | for (ptr_to_current = queue; | |
801 | *ptr_to_current != NULL && *ptr_to_current != to_remove; | |
802 | ptr_to_current = &(*ptr_to_current)->next); | |
803 | if (*ptr_to_current == to_remove) | |
804 | { | |
805 | sim_event *dead = *ptr_to_current; | |
806 | *ptr_to_current = dead->next; | |
807 | ETRACE ((_ETRACE, | |
808 | "event/watch descheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
809 | (long) sim_events_time (sd), | |
810 | (long) event_to_remove, | |
811 | (long) dead->time_of_event, | |
812 | (long) dead->handler, | |
813 | (long) dead->data, | |
814 | (dead->trace != NULL) ? ", " : "", | |
815 | (dead->trace != NULL) ? dead->trace : "")); | |
816 | sim_events_free (sd, dead); | |
817 | update_time_from_event (sd); | |
818 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); | |
819 | return; | |
820 | } | |
821 | } | |
822 | } | |
823 | ETRACE ((_ETRACE, | |
824 | "event/watch descheduled at %ld - tag 0x%lx - not found\n", | |
825 | (long) sim_events_time (sd), | |
826 | (long) event_to_remove)); | |
827 | } | |
828 | #endif | |
829 | ||
830 | ||
831 | STATIC_INLINE_SIM_EVENTS\ | |
832 | (int) | |
833 | sim_watch_valid (SIM_DESC sd, | |
834 | sim_event *to_do) | |
835 | { | |
836 | switch (to_do->watching) | |
837 | { | |
838 | ||
839 | #define WATCH_CORE(N,OP,EXT) \ | |
840 | int ok; \ | |
841 | unsigned_##N word = 0; \ | |
842 | int nr_read = sim_core_read_buffer (sd, NULL, to_do->core_map, &word, \ | |
843 | to_do->core_addr, sizeof (word)); \ | |
844 | OP (word); \ | |
845 | ok = (nr_read == sizeof (unsigned_##N) \ | |
846 | && (to_do->is_within \ | |
847 | == (word >= to_do->lb##EXT \ | |
848 | && word <= to_do->ub##EXT))); | |
849 | ||
850 | case watch_core_targ_1: | |
851 | { | |
852 | WATCH_CORE (1, T2H,); | |
853 | return ok; | |
854 | } | |
855 | case watch_core_targ_2: | |
856 | { | |
857 | WATCH_CORE (2, T2H,); | |
858 | return ok; | |
859 | } | |
860 | case watch_core_targ_4: | |
861 | { | |
862 | WATCH_CORE (4, T2H,); | |
863 | return ok; | |
864 | } | |
865 | case watch_core_targ_8: | |
866 | { | |
867 | WATCH_CORE (8, T2H,64); | |
868 | return ok; | |
869 | } | |
870 | ||
871 | case watch_core_be_1: | |
872 | { | |
873 | WATCH_CORE (1, BE2H,); | |
874 | return ok; | |
875 | } | |
876 | case watch_core_be_2: | |
877 | { | |
878 | WATCH_CORE (2, BE2H,); | |
879 | return ok; | |
880 | } | |
881 | case watch_core_be_4: | |
882 | { | |
883 | WATCH_CORE (4, BE2H,); | |
884 | return ok; | |
885 | } | |
886 | case watch_core_be_8: | |
887 | { | |
888 | WATCH_CORE (8, BE2H,64); | |
889 | return ok; | |
890 | } | |
891 | ||
892 | case watch_core_le_1: | |
893 | { | |
894 | WATCH_CORE (1, LE2H,); | |
895 | return ok; | |
896 | } | |
897 | case watch_core_le_2: | |
898 | { | |
899 | WATCH_CORE (2, LE2H,); | |
900 | return ok; | |
901 | } | |
902 | case watch_core_le_4: | |
903 | { | |
904 | WATCH_CORE (4, LE2H,); | |
905 | return ok; | |
906 | } | |
907 | case watch_core_le_8: | |
908 | { | |
909 | WATCH_CORE (8, LE2H,64); | |
910 | return ok; | |
911 | } | |
912 | #undef WATCH_CORE | |
913 | ||
914 | #define WATCH_SIM(N,OP,EXT) \ | |
915 | int ok; \ | |
916 | unsigned_##N word = *(unsigned_##N*)to_do->host_addr; \ | |
917 | OP (word); \ | |
918 | ok = (to_do->is_within \ | |
919 | == (word >= to_do->lb##EXT \ | |
920 | && word <= to_do->ub##EXT)); | |
921 | ||
922 | case watch_sim_host_1: | |
923 | { | |
924 | WATCH_SIM (1, word = ,); | |
925 | return ok; | |
926 | } | |
927 | case watch_sim_host_2: | |
928 | { | |
929 | WATCH_SIM (2, word = ,); | |
930 | return ok; | |
931 | } | |
932 | case watch_sim_host_4: | |
933 | { | |
934 | WATCH_SIM (4, word = ,); | |
935 | return ok; | |
936 | } | |
937 | case watch_sim_host_8: | |
938 | { | |
939 | WATCH_SIM (8, word = ,64); | |
940 | return ok; | |
941 | } | |
942 | ||
943 | case watch_sim_be_1: | |
944 | { | |
945 | WATCH_SIM (1, BE2H,); | |
946 | return ok; | |
947 | } | |
948 | case watch_sim_be_2: | |
949 | { | |
950 | WATCH_SIM (2, BE2H,); | |
951 | return ok; | |
952 | } | |
953 | case watch_sim_be_4: | |
954 | { | |
955 | WATCH_SIM (4, BE2H,); | |
956 | return ok; | |
957 | } | |
958 | case watch_sim_be_8: | |
959 | { | |
960 | WATCH_SIM (8, BE2H,64); | |
961 | return ok; | |
962 | } | |
963 | ||
964 | case watch_sim_le_1: | |
965 | { | |
966 | WATCH_SIM (1, LE2H,); | |
967 | return ok; | |
968 | } | |
969 | case watch_sim_le_2: | |
970 | { | |
971 | WATCH_SIM (1, LE2H,); | |
972 | return ok; | |
973 | } | |
974 | case watch_sim_le_4: | |
975 | { | |
976 | WATCH_SIM (1, LE2H,); | |
977 | return ok; | |
978 | } | |
979 | case watch_sim_le_8: | |
980 | { | |
981 | WATCH_SIM (1, LE2H,64); | |
982 | return ok; | |
983 | } | |
984 | #undef WATCH_SIM | |
985 | ||
986 | case watch_clock: /* wallclock */ | |
987 | { | |
988 | unsigned long elapsed_time = sim_events_elapsed_time (sd); | |
989 | return (elapsed_time >= to_do->wallclock); | |
990 | } | |
991 | ||
992 | default: | |
993 | sim_io_error (sd, "sim_watch_valid - bad switch"); | |
994 | break; | |
995 | ||
996 | } | |
997 | return 1; | |
998 | } | |
999 | ||
1000 | ||
1001 | INLINE_SIM_EVENTS\ | |
1002 | (int) | |
1003 | sim_events_tick (SIM_DESC sd) | |
1004 | { | |
1005 | sim_events *events = STATE_EVENTS (sd); | |
1006 | ||
1007 | /* this should only be called after the previous ticks have been | |
1008 | fully processed */ | |
1009 | ||
1010 | /* Advance the time but *only* if there is nothing to process */ | |
1011 | if (events->work_pending | |
1012 | || events->time_from_event == 0) | |
1013 | { | |
1014 | events->nr_ticks_to_process += 1; | |
1015 | return 1; | |
1016 | } | |
1017 | else | |
1018 | { | |
1019 | events->time_from_event -= 1; | |
1020 | return 0; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | ||
1025 | INLINE_SIM_EVENTS\ | |
1026 | (int) | |
1027 | sim_events_tickn (SIM_DESC sd, | |
1028 | int n) | |
1029 | { | |
1030 | sim_events *events = STATE_EVENTS (sd); | |
1031 | SIM_ASSERT (n > 0); | |
1032 | ||
1033 | /* this should only be called after the previous ticks have been | |
1034 | fully processed */ | |
1035 | ||
1036 | /* Advance the time but *only* if there is nothing to process */ | |
1037 | if (events->work_pending || events->time_from_event < n) | |
1038 | { | |
1039 | events->nr_ticks_to_process += n; | |
1040 | return 1; | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | events->time_from_event -= n; | |
1045 | return 0; | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | ||
1050 | INLINE_SIM_EVENTS\ | |
1051 | (void) | |
1052 | sim_events_slip (SIM_DESC sd, | |
1053 | int slip) | |
1054 | { | |
1055 | sim_events *events = STATE_EVENTS (sd); | |
1056 | SIM_ASSERT (slip > 0); | |
1057 | ||
1058 | /* Flag a ready event with work_pending instead of number of ticks | |
1059 | to process so that the time continues to be correct */ | |
1060 | if (events->time_from_event < slip) | |
1061 | { | |
1062 | events->work_pending = 1; | |
1063 | } | |
1064 | events->time_from_event -= slip; | |
1065 | } | |
1066 | ||
1067 | ||
1068 | INLINE_SIM_EVENTS\ | |
1069 | (void) | |
1070 | sim_events_preprocess (SIM_DESC sd, | |
1071 | int events_were_last, | |
1072 | int events_were_next) | |
1073 | { | |
1074 | sim_events *events = STATE_EVENTS(sd); | |
1075 | if (events_were_last) | |
1076 | { | |
1077 | /* Halted part way through event processing */ | |
1078 | ASSERT (events->nr_ticks_to_process != 0); | |
1079 | /* The external world can't tell if the event that stopped the | |
1080 | simulator was the last event to process. */ | |
1081 | ASSERT (events_were_next); | |
1082 | sim_events_process (sd); | |
1083 | } | |
1084 | else if (events_were_next) | |
1085 | { | |
1086 | /* Halted by the last processor */ | |
1087 | if (sim_events_tick (sd)) | |
1088 | sim_events_process (sd); | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | ||
1093 | INLINE_SIM_EVENTS\ | |
1094 | (void) | |
1095 | sim_events_process (SIM_DESC sd) | |
1096 | { | |
1097 | sim_events *events = STATE_EVENTS(sd); | |
1098 | signed64 event_time = sim_events_time(sd); | |
1099 | ||
1100 | /* Clear work_pending before checking nr_held. Clearing | |
1101 | work_pending after nr_held (with out a lock could loose an | |
1102 | event). */ | |
1103 | events->work_pending = 0; | |
1104 | ||
1105 | /* move any events that were asynchronously queued by any signal | |
1106 | handlers onto the real event queue. */ | |
1107 | if (events->nr_held > 0) | |
1108 | { | |
1109 | int i; | |
1110 | ||
1111 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) | |
1112 | /*-LOCK-*/ | |
1113 | sigset_t old_mask; | |
1114 | sigset_t new_mask; | |
1115 | sigfillset(&new_mask); | |
1116 | sigprocmask(SIG_SETMASK, &new_mask, &old_mask); | |
1117 | #endif | |
1118 | ||
1119 | for (i = 0; i < events->nr_held; i++) | |
1120 | { | |
1121 | sim_event *entry = &events->held [i]; | |
1122 | sim_events_schedule (sd, | |
1123 | entry->time_of_event, | |
1124 | entry->handler, | |
1125 | entry->data); | |
1126 | } | |
1127 | events->nr_held = 0; | |
1128 | ||
1129 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) | |
1130 | /*-UNLOCK-*/ | |
1131 | sigprocmask(SIG_SETMASK, &old_mask, NULL); | |
1132 | #endif | |
1133 | ||
1134 | } | |
1135 | ||
1136 | /* Process any watchpoints. Be careful to allow a watchpoint to | |
1137 | appear/disappear under our feet. | |
1138 | To ensure that watchpoints are processed only once per cycle, | |
1139 | they are moved onto a watched queue, this returned to the | |
1140 | watchpoint queue when all queue processing has been | |
1141 | completed. */ | |
1142 | while (events->watchpoints != NULL) | |
1143 | { | |
1144 | sim_event *to_do = events->watchpoints; | |
1145 | events->watchpoints = to_do->next; | |
1146 | if (sim_watch_valid (sd, to_do)) | |
1147 | { | |
1148 | sim_event_handler *handler = to_do->handler; | |
1149 | void *data = to_do->data; | |
1150 | ETRACE((_ETRACE, | |
1151 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", | |
1152 | (long) event_time, | |
1153 | (long) to_do, | |
1154 | (long) handler, | |
1155 | (long) data, | |
1156 | (to_do->trace != NULL) ? ", " : "", | |
1157 | (to_do->trace != NULL) ? to_do->trace : "")); | |
1158 | sim_events_free (sd, to_do); | |
1159 | handler (sd, data); | |
1160 | } | |
1161 | else | |
1162 | { | |
1163 | to_do->next = events->watchedpoints; | |
1164 | events->watchedpoints = to_do; | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | /* consume all events for this or earlier times. Be careful to | |
1169 | allow an event to appear/disappear under our feet */ | |
1170 | while (events->queue->time_of_event < | |
1171 | (event_time + events->nr_ticks_to_process)) | |
1172 | { | |
1173 | sim_event *to_do = events->queue; | |
1174 | sim_event_handler *handler = to_do->handler; | |
1175 | void *data = to_do->data; | |
1176 | events->queue = to_do->next; | |
1177 | update_time_from_event (sd); | |
1178 | ETRACE((_ETRACE, | |
1179 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", | |
1180 | (long) event_time, | |
1181 | (long) to_do, | |
1182 | (long) handler, | |
1183 | (long) data, | |
1184 | (to_do->trace != NULL) ? ", " : "", | |
1185 | (to_do->trace != NULL) ? to_do->trace : "")); | |
1186 | sim_events_free (sd, to_do); | |
1187 | handler (sd, data); | |
1188 | } | |
1189 | ||
1190 | /* put things back where they belong ready for the next iteration */ | |
1191 | events->watchpoints = events->watchedpoints; | |
1192 | events->watchedpoints = NULL; | |
1193 | if (events->watchpoints != NULL) | |
1194 | events->work_pending = 1; | |
1195 | ||
1196 | /* advance the time */ | |
1197 | SIM_ASSERT (events->time_from_event >= events->nr_ticks_to_process); | |
1198 | SIM_ASSERT (events->queue != NULL); /* always poll event */ | |
1199 | events->time_from_event -= events->nr_ticks_to_process; | |
1200 | ||
1201 | /* this round of processing complete */ | |
1202 | events->nr_ticks_to_process = 0; | |
c906108c SS |
1203 | } |
1204 | ||
1205 | #endif |