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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
3666a048 | 3 | Copyright 2002-2021 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" | |
4c0d76b9 | 28 | #include "sim-cpu.h" |
e7505490 | 29 | #include "libiberty.h" |
c906108c | 30 | |
c906108c | 31 | #include <string.h> |
c906108c | 32 | #include <stdlib.h> |
6439295f | 33 | #include <signal.h> /* For SIGPROCMASK et al. */ |
c906108c | 34 | |
c906108c SS |
35 | typedef enum { |
36 | watch_invalid, | |
37 | ||
38 | /* core - target byte order */ | |
39 | watch_core_targ_1, | |
40 | watch_core_targ_2, | |
41 | watch_core_targ_4, | |
42 | watch_core_targ_8, | |
43 | /* core - big-endian */ | |
44 | watch_core_be_1, | |
45 | watch_core_be_2, | |
46 | watch_core_be_4, | |
47 | watch_core_be_8, | |
48 | /* core - little-endian */ | |
49 | watch_core_le_1, | |
50 | watch_core_le_2, | |
51 | watch_core_le_4, | |
52 | watch_core_le_8, | |
53 | ||
54 | /* sim - host byte order */ | |
55 | watch_sim_host_1, | |
56 | watch_sim_host_2, | |
57 | watch_sim_host_4, | |
58 | watch_sim_host_8, | |
59 | /* sim - big-endian */ | |
60 | watch_sim_be_1, | |
61 | watch_sim_be_2, | |
62 | watch_sim_be_4, | |
63 | watch_sim_be_8, | |
64 | /* sim - little-endian */ | |
65 | watch_sim_le_1, | |
66 | watch_sim_le_2, | |
67 | watch_sim_le_4, | |
68 | watch_sim_le_8, | |
028f6515 | 69 | |
4c0d76b9 MF |
70 | /* pc */ |
71 | watch_pc, | |
72 | ||
c906108c SS |
73 | /* wallclock */ |
74 | watch_clock, | |
75 | ||
76 | /* timer */ | |
77 | watch_timer, | |
78 | } sim_event_watchpoints; | |
79 | ||
80 | ||
81 | struct _sim_event { | |
82 | sim_event_watchpoints watching; | |
83 | void *data; | |
84 | sim_event_handler *handler; | |
85 | /* timer event */ | |
86 | signed64 time_of_event; | |
87 | /* watch wallclock event */ | |
88 | unsigned wallclock; | |
89 | /* watch core address */ | |
90 | address_word core_addr; | |
91 | unsigned core_map; | |
92 | /* watch sim addr */ | |
93 | void *host_addr; | |
94 | /* watch core/sim range */ | |
95 | int is_within; /* 0/1 */ | |
96 | unsigned ub; | |
97 | unsigned lb; | |
98 | unsigned64 ub64; | |
99 | unsigned64 lb64; | |
100 | /* trace info (if any) */ | |
101 | char *trace; | |
102 | /* list */ | |
103 | sim_event *next; | |
104 | }; | |
105 | ||
106 | ||
107 | /* The event queue maintains a single absolute time using two | |
108 | variables. | |
028f6515 | 109 | |
c906108c | 110 | TIME_OF_EVENT: this holds the time at which the next event is ment |
6439295f | 111 | to occur. If no next event it will hold the time of the last |
c906108c SS |
112 | event. |
113 | ||
114 | TIME_FROM_EVENT: The current distance from TIME_OF_EVENT. A value | |
115 | <= 0 (except when poll-event is being processed) indicates that | |
116 | event processing is due. This variable is decremented once for | |
117 | each iteration of a clock cycle. | |
118 | ||
119 | Initially, the clock is started at time one (0) with TIME_OF_EVENT | |
120 | == 0 and TIME_FROM_EVENT == 0 and with NR_TICKS_TO_PROCESS == 1. | |
121 | ||
122 | Clearly there is a bug in that this code assumes that the absolute | |
123 | time counter will never become greater than 2^62. | |
124 | ||
125 | To avoid the need to use 64bit arithmetic, the event queue always | |
126 | contains at least one event scheduled every 16 000 ticks. This | |
127 | limits the time from event counter to values less than | |
128 | 16 000. */ | |
129 | ||
130 | ||
131 | #if !defined (SIM_EVENTS_POLL_RATE) | |
132 | #define SIM_EVENTS_POLL_RATE 0x1000 | |
133 | #endif | |
134 | ||
135 | ||
136 | #define _ETRACE sd, NULL | |
137 | ||
c906108c SS |
138 | #undef ETRACE |
139 | #define ETRACE(ARGS) \ | |
140 | do \ | |
141 | { \ | |
83034798 | 142 | if (STRACE_EVENTS_P (sd)) \ |
c906108c SS |
143 | { \ |
144 | if (STRACE_DEBUG_P (sd)) \ | |
e7505490 | 145 | trace_printf (sd, NULL, "%s:%d: ", lbasename (__FILE__), __LINE__); \ |
c906108c SS |
146 | trace_printf ARGS; \ |
147 | } \ | |
148 | } \ | |
149 | while (0) | |
150 | ||
151 | ||
152 | /* event queue iterator - don't iterate over the held queue. */ | |
153 | ||
154 | #if EXTERN_SIM_EVENTS_P | |
155 | static sim_event ** | |
156 | next_event_queue (SIM_DESC sd, | |
157 | sim_event **queue) | |
158 | { | |
159 | if (queue == NULL) | |
160 | return &STATE_EVENTS (sd)->queue; | |
161 | else if (queue == &STATE_EVENTS (sd)->queue) | |
162 | return &STATE_EVENTS (sd)->watchpoints; | |
163 | else if (queue == &STATE_EVENTS (sd)->watchpoints) | |
164 | return &STATE_EVENTS (sd)->watchedpoints; | |
165 | else if (queue == &STATE_EVENTS (sd)->watchedpoints) | |
166 | return NULL; | |
167 | else | |
168 | sim_io_error (sd, "next_event_queue - bad queue"); | |
169 | return NULL; | |
170 | } | |
171 | #endif | |
172 | ||
173 | ||
174 | STATIC_INLINE_SIM_EVENTS\ | |
175 | (void) | |
176 | sim_events_poll (SIM_DESC sd, | |
177 | void *data) | |
178 | { | |
179 | /* just re-schedule in 1000 million ticks time */ | |
180 | sim_events_schedule (sd, SIM_EVENTS_POLL_RATE, sim_events_poll, sd); | |
181 | sim_io_poll_quit (sd); | |
182 | } | |
183 | ||
184 | ||
185 | /* "events" module install handler. | |
186 | This is called via sim_module_install to install the "events" subsystem | |
187 | into the simulator. */ | |
188 | ||
189 | #if EXTERN_SIM_EVENTS_P | |
190 | STATIC_SIM_EVENTS (MODULE_UNINSTALL_FN) sim_events_uninstall; | |
191 | STATIC_SIM_EVENTS (MODULE_INIT_FN) sim_events_init; | |
192 | STATIC_SIM_EVENTS (MODULE_RESUME_FN) sim_events_resume; | |
193 | STATIC_SIM_EVENTS (MODULE_SUSPEND_FN) sim_events_suspend; | |
194 | #endif | |
195 | ||
196 | #if EXTERN_SIM_EVENTS_P | |
197 | SIM_RC | |
198 | sim_events_install (SIM_DESC sd) | |
199 | { | |
200 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
201 | sim_module_add_uninstall_fn (sd, sim_events_uninstall); | |
202 | sim_module_add_init_fn (sd, sim_events_init); | |
203 | sim_module_add_resume_fn (sd, sim_events_resume); | |
204 | sim_module_add_suspend_fn (sd, sim_events_suspend); | |
205 | return SIM_RC_OK; | |
206 | } | |
207 | #endif | |
208 | ||
209 | ||
210 | /* Suspend/resume the event queue manager when the simulator is not | |
211 | running */ | |
212 | ||
213 | #if EXTERN_SIM_EVENTS_P | |
214 | static SIM_RC | |
215 | sim_events_resume (SIM_DESC sd) | |
216 | { | |
217 | sim_events *events = STATE_EVENTS (sd); | |
218 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
219 | SIM_ASSERT (events->resume_wallclock == 0); | |
220 | events->resume_wallclock = sim_elapsed_time_get (); | |
221 | return SIM_RC_OK; | |
222 | } | |
223 | #endif | |
224 | ||
225 | #if EXTERN_SIM_EVENTS_P | |
226 | static SIM_RC | |
227 | sim_events_suspend (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->elapsed_wallclock += sim_elapsed_time_since (events->resume_wallclock); | |
233 | events->resume_wallclock = 0; | |
234 | return SIM_RC_OK; | |
235 | } | |
236 | #endif | |
237 | ||
238 | ||
239 | /* Uninstall the "events" subsystem from the simulator. */ | |
240 | ||
241 | #if EXTERN_SIM_EVENTS_P | |
242 | static void | |
243 | sim_events_uninstall (SIM_DESC sd) | |
244 | { | |
245 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
246 | /* FIXME: free buffers, etc. */ | |
247 | } | |
248 | #endif | |
249 | ||
250 | ||
251 | /* malloc/free */ | |
252 | ||
253 | #if EXTERN_SIM_EVENTS_P | |
254 | static sim_event * | |
255 | sim_events_zalloc (SIM_DESC sd) | |
256 | { | |
257 | sim_events *events = STATE_EVENTS (sd); | |
258 | sim_event *new = events->free_list; | |
259 | if (new != NULL) | |
260 | { | |
261 | events->free_list = new->next; | |
262 | memset (new, 0, sizeof (*new)); | |
263 | } | |
264 | else | |
265 | { | |
266 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
267 | /*-LOCK-*/ | |
268 | sigset_t old_mask; | |
269 | sigset_t new_mask; | |
34b47c38 | 270 | sigfillset (&new_mask); |
c906108c SS |
271 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); |
272 | #endif | |
273 | new = ZALLOC (sim_event); | |
274 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
275 | /*-UNLOCK-*/ | |
276 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
277 | #endif | |
278 | } | |
279 | return new; | |
280 | } | |
281 | #endif | |
282 | ||
283 | STATIC_INLINE_SIM_EVENTS\ | |
284 | (void) | |
285 | sim_events_free (SIM_DESC sd, | |
286 | sim_event *dead) | |
287 | { | |
288 | sim_events *events = STATE_EVENTS (sd); | |
289 | dead->next = events->free_list; | |
290 | events->free_list = dead; | |
291 | if (dead->trace != NULL) | |
292 | { | |
293 | free (dead->trace); /* NB: asprintf returns a `free' buf */ | |
294 | dead->trace = NULL; | |
295 | } | |
296 | } | |
297 | ||
298 | ||
299 | /* Initialize the simulator event manager */ | |
300 | ||
301 | #if EXTERN_SIM_EVENTS_P | |
302 | SIM_RC | |
303 | sim_events_init (SIM_DESC sd) | |
304 | { | |
305 | sim_events *events = STATE_EVENTS (sd); | |
306 | ||
307 | /* drain the interrupt queue */ | |
308 | events->nr_held = 0; | |
309 | if (events->held == NULL) | |
310 | events->held = NZALLOC (sim_event, MAX_NR_SIGNAL_SIM_EVENTS); | |
311 | ||
312 | /* drain the normal queues */ | |
313 | { | |
314 | sim_event **queue = NULL; | |
315 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
316 | { | |
317 | if (queue == NULL) break; | |
318 | while (*queue != NULL) | |
319 | { | |
320 | sim_event *dead = *queue; | |
321 | *queue = dead->next; | |
322 | sim_events_free (sd, dead); | |
323 | } | |
324 | *queue = NULL; | |
325 | } | |
326 | } | |
327 | ||
328 | /* wind time back to zero */ | |
329 | events->nr_ticks_to_process = 1; /* start by doing queue */ | |
330 | events->time_of_event = 0; | |
331 | events->time_from_event = 0; | |
332 | events->elapsed_wallclock = 0; | |
333 | events->resume_wallclock = 0; | |
334 | ||
335 | /* schedule our initial counter event */ | |
336 | sim_events_schedule (sd, 0, sim_events_poll, sd); | |
337 | ||
338 | /* from now on, except when the large-int event is being processed | |
339 | the event queue is non empty */ | |
340 | SIM_ASSERT (events->queue != NULL); | |
341 | ||
342 | return SIM_RC_OK; | |
343 | } | |
344 | #endif | |
345 | ||
346 | ||
347 | INLINE_SIM_EVENTS\ | |
348 | (signed64) | |
349 | sim_events_time (SIM_DESC sd) | |
350 | { | |
351 | sim_events *events = STATE_EVENTS (sd); | |
352 | return (events->time_of_event - events->time_from_event); | |
353 | } | |
354 | ||
355 | ||
356 | INLINE_SIM_EVENTS\ | |
357 | (unsigned long) | |
358 | sim_events_elapsed_time (SIM_DESC sd) | |
359 | { | |
360 | unsigned long elapsed = STATE_EVENTS (sd)->elapsed_wallclock; | |
361 | ||
362 | /* Are we being called inside sim_resume? | |
363 | (Is there a simulation in progress?) */ | |
364 | if (STATE_EVENTS (sd)->resume_wallclock != 0) | |
365 | elapsed += sim_elapsed_time_since (STATE_EVENTS (sd)->resume_wallclock); | |
366 | ||
367 | return elapsed; | |
368 | } | |
369 | ||
370 | ||
38e64f35 AC |
371 | /* Returns the time that remains before the event is raised. */ |
372 | INLINE_SIM_EVENTS\ | |
373 | (signed64) | |
374 | sim_events_remain_time (SIM_DESC sd, sim_event *event) | |
375 | { | |
376 | if (event == 0) | |
377 | return 0; | |
028f6515 | 378 | |
38e64f35 AC |
379 | return (event->time_of_event - sim_events_time (sd)); |
380 | } | |
381 | ||
382 | ||
383 | ||
c906108c SS |
384 | STATIC_INLINE_SIM_EVENTS\ |
385 | (void) | |
386 | update_time_from_event (SIM_DESC sd) | |
387 | { | |
388 | sim_events *events = STATE_EVENTS (sd); | |
389 | signed64 current_time = sim_events_time (sd); | |
390 | if (events->queue != NULL) | |
391 | { | |
392 | events->time_of_event = events->queue->time_of_event; | |
393 | events->time_from_event = (events->queue->time_of_event - current_time); | |
394 | } | |
395 | else | |
396 | { | |
397 | events->time_of_event = current_time - 1; | |
398 | events->time_from_event = -1; | |
399 | } | |
83034798 | 400 | if (STRACE_EVENTS_P (sd)) |
5eb1a8fa AC |
401 | { |
402 | sim_event *event; | |
403 | int i; | |
404 | for (event = events->queue, i = 0; | |
405 | event != NULL; | |
406 | event = event->next, i++) | |
407 | { | |
408 | ETRACE ((_ETRACE, | |
409 | "event time-from-event - time %ld, delta %ld - event %d, tag 0x%lx, time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
410 | (long)current_time, | |
411 | (long)events->time_from_event, | |
412 | i, | |
413 | (long)event, | |
414 | (long)event->time_of_event, | |
415 | (long)event->handler, | |
416 | (long)event->data, | |
417 | (event->trace != NULL) ? ", " : "", | |
418 | (event->trace != NULL) ? event->trace : "")); | |
419 | } | |
420 | } | |
c906108c SS |
421 | SIM_ASSERT (current_time == sim_events_time (sd)); |
422 | } | |
423 | ||
424 | ||
425 | #if EXTERN_SIM_EVENTS_P | |
426 | static void | |
427 | insert_sim_event (SIM_DESC sd, | |
428 | sim_event *new_event, | |
429 | signed64 delta) | |
430 | { | |
431 | sim_events *events = STATE_EVENTS (sd); | |
432 | sim_event *curr; | |
433 | sim_event **prev; | |
434 | signed64 time_of_event; | |
435 | ||
436 | if (delta < 0) | |
437 | sim_io_error (sd, "what is past is past!\n"); | |
028f6515 | 438 | |
6439295f | 439 | /* compute when the event should occur */ |
c906108c | 440 | time_of_event = sim_events_time (sd) + delta; |
028f6515 | 441 | |
c906108c SS |
442 | /* find the queue insertion point - things are time ordered */ |
443 | prev = &events->queue; | |
444 | curr = events->queue; | |
445 | while (curr != NULL && time_of_event >= curr->time_of_event) | |
446 | { | |
447 | SIM_ASSERT (curr->next == NULL | |
448 | || curr->time_of_event <= curr->next->time_of_event); | |
449 | prev = &curr->next; | |
450 | curr = curr->next; | |
451 | } | |
452 | SIM_ASSERT (curr == NULL || time_of_event < curr->time_of_event); | |
028f6515 | 453 | |
c906108c SS |
454 | /* insert it */ |
455 | new_event->next = curr; | |
456 | *prev = new_event; | |
457 | new_event->time_of_event = time_of_event; | |
028f6515 | 458 | |
c906108c SS |
459 | /* adjust the time until the first event */ |
460 | update_time_from_event (sd); | |
461 | } | |
462 | #endif | |
463 | ||
464 | ||
465 | #if EXTERN_SIM_EVENTS_P | |
466 | sim_event * | |
467 | sim_events_schedule (SIM_DESC sd, | |
468 | signed64 delta_time, | |
469 | sim_event_handler *handler, | |
470 | void *data) | |
471 | { | |
dbc0e7ce | 472 | return sim_events_schedule_tracef (sd, delta_time, handler, data, NULL); |
c906108c SS |
473 | } |
474 | #endif | |
475 | ||
476 | ||
477 | #if EXTERN_SIM_EVENTS_P | |
478 | sim_event * | |
479 | sim_events_schedule_tracef (SIM_DESC sd, | |
480 | signed64 delta_time, | |
481 | sim_event_handler *handler, | |
482 | void *data, | |
483 | const char *fmt, | |
484 | ...) | |
485 | { | |
486 | sim_event *new_event; | |
487 | va_list ap; | |
488 | va_start (ap, fmt); | |
489 | new_event = sim_events_schedule_vtracef (sd, delta_time, handler, data, fmt, ap); | |
490 | va_end (ap); | |
491 | return new_event; | |
492 | } | |
493 | #endif | |
494 | ||
495 | ||
496 | #if EXTERN_SIM_EVENTS_P | |
497 | sim_event * | |
498 | sim_events_schedule_vtracef (SIM_DESC sd, | |
499 | signed64 delta_time, | |
500 | sim_event_handler *handler, | |
501 | void *data, | |
502 | const char *fmt, | |
503 | va_list ap) | |
504 | { | |
505 | sim_event *new_event = sim_events_zalloc (sd); | |
506 | new_event->data = data; | |
507 | new_event->handler = handler; | |
508 | new_event->watching = watch_timer; | |
83034798 | 509 | if (fmt == NULL || !STRACE_EVENTS_P (sd) || vasprintf (&new_event->trace, fmt, ap) < 0) |
c906108c | 510 | new_event->trace = NULL; |
34b47c38 MF |
511 | insert_sim_event (sd, new_event, delta_time); |
512 | ETRACE ((_ETRACE, | |
513 | "event scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
514 | (long)sim_events_time (sd), | |
515 | (long)new_event, | |
516 | (long)new_event->time_of_event, | |
517 | (long)new_event->handler, | |
518 | (long)new_event->data, | |
519 | (new_event->trace != NULL) ? ", " : "", | |
520 | (new_event->trace != NULL) ? new_event->trace : "")); | |
c906108c SS |
521 | return new_event; |
522 | } | |
523 | #endif | |
524 | ||
525 | ||
526 | #if EXTERN_SIM_EVENTS_P | |
527 | void | |
528 | sim_events_schedule_after_signal (SIM_DESC sd, | |
529 | signed64 delta_time, | |
530 | sim_event_handler *handler, | |
531 | void *data) | |
532 | { | |
533 | sim_events *events = STATE_EVENTS (sd); | |
534 | sim_event *new_event; | |
535 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
536 | /*-LOCK-*/ | |
537 | sigset_t old_mask; | |
538 | sigset_t new_mask; | |
34b47c38 | 539 | sigfillset (&new_mask); |
c906108c SS |
540 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); |
541 | #endif | |
028f6515 | 542 | |
c906108c SS |
543 | /* allocate an event entry from the signal buffer */ |
544 | new_event = &events->held [events->nr_held]; | |
545 | events->nr_held ++; | |
546 | if (events->nr_held > MAX_NR_SIGNAL_SIM_EVENTS) | |
547 | { | |
548 | sim_engine_abort (NULL, NULL, NULL_CIA, | |
509c2f32 | 549 | "sim_events_schedule_after_signal - buffer overflow"); |
c906108c | 550 | } |
028f6515 | 551 | |
c906108c SS |
552 | new_event->data = data; |
553 | new_event->handler = handler; | |
554 | new_event->time_of_event = delta_time; /* work it out later */ | |
555 | new_event->next = NULL; | |
556 | ||
557 | events->work_pending = 1; /* notify main process */ | |
558 | ||
559 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) | |
560 | /*-UNLOCK-*/ | |
561 | sigprocmask (SIG_SETMASK, &old_mask, NULL); | |
562 | #endif | |
028f6515 | 563 | |
c906108c SS |
564 | ETRACE ((_ETRACE, |
565 | "signal scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", | |
34b47c38 | 566 | (long)sim_events_time (sd), |
c906108c SS |
567 | (long)new_event, |
568 | (long)new_event->time_of_event, | |
569 | (long)new_event->handler, | |
570 | (long)new_event->data)); | |
571 | } | |
572 | #endif | |
573 | ||
574 | ||
575 | #if EXTERN_SIM_EVENTS_P | |
576 | sim_event * | |
577 | sim_events_watch_clock (SIM_DESC sd, | |
578 | unsigned delta_ms_time, | |
579 | sim_event_handler *handler, | |
580 | void *data) | |
581 | { | |
582 | sim_events *events = STATE_EVENTS (sd); | |
583 | sim_event *new_event = sim_events_zalloc (sd); | |
584 | /* type */ | |
585 | new_event->watching = watch_clock; | |
586 | /* handler */ | |
587 | new_event->data = data; | |
588 | new_event->handler = handler; | |
589 | /* data */ | |
590 | if (events->resume_wallclock == 0) | |
591 | new_event->wallclock = (events->elapsed_wallclock + delta_ms_time); | |
592 | else | |
593 | new_event->wallclock = (events->elapsed_wallclock | |
594 | + sim_elapsed_time_since (events->resume_wallclock) | |
595 | + delta_ms_time); | |
596 | /* insert */ | |
597 | new_event->next = events->watchpoints; | |
598 | events->watchpoints = new_event; | |
599 | events->work_pending = 1; | |
600 | ETRACE ((_ETRACE, | |
601 | "event watching clock at %ld - tag 0x%lx - wallclock %ld, handler 0x%lx, data 0x%lx\n", | |
602 | (long)sim_events_time (sd), | |
603 | (long)new_event, | |
604 | (long)new_event->wallclock, | |
605 | (long)new_event->handler, | |
606 | (long)new_event->data)); | |
607 | return new_event; | |
608 | } | |
609 | #endif | |
610 | ||
611 | ||
4c0d76b9 MF |
612 | #if EXTERN_SIM_EVENTS_P |
613 | sim_event * | |
614 | sim_events_watch_pc (SIM_DESC sd, | |
615 | int is_within, | |
616 | unsigned64 lb, | |
617 | unsigned64 ub, | |
618 | sim_event_handler *handler, | |
619 | void *data) | |
620 | { | |
621 | sim_events *events = STATE_EVENTS (sd); | |
622 | sim_event *new_event = sim_events_zalloc (sd); | |
623 | /* type */ | |
624 | new_event->watching = watch_pc; | |
625 | /* handler */ | |
626 | new_event->data = data; | |
627 | new_event->handler = handler; | |
628 | /* data */ | |
629 | new_event->lb = lb; | |
630 | new_event->lb64 = lb; | |
631 | new_event->ub = ub; | |
632 | new_event->ub64 = ub; | |
633 | new_event->is_within = (is_within != 0); | |
634 | /* insert */ | |
635 | new_event->next = events->watchpoints; | |
636 | events->watchpoints = new_event; | |
637 | events->work_pending = 1; | |
638 | ETRACE ((_ETRACE, | |
639 | "event watching pc at %ld - tag 0x%lx - pc 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
640 | (long)sim_events_time (sd), | |
641 | (long)new_event, | |
642 | (long)new_event->lb, | |
643 | (long)new_event->ub, | |
644 | (long)new_event->handler, | |
645 | (long)new_event->data)); | |
646 | return new_event; | |
647 | } | |
648 | #endif | |
649 | ||
650 | ||
c906108c SS |
651 | #if EXTERN_SIM_EVENTS_P |
652 | sim_event * | |
653 | sim_events_watch_sim (SIM_DESC sd, | |
654 | void *host_addr, | |
655 | int nr_bytes, | |
62fe7512 | 656 | enum bfd_endian byte_order, |
c906108c SS |
657 | int is_within, |
658 | unsigned64 lb, | |
659 | unsigned64 ub, | |
660 | sim_event_handler *handler, | |
661 | void *data) | |
662 | { | |
663 | sim_events *events = STATE_EVENTS (sd); | |
664 | sim_event *new_event = sim_events_zalloc (sd); | |
665 | /* type */ | |
666 | switch (byte_order) | |
667 | { | |
1ac72f06 | 668 | case BFD_ENDIAN_UNKNOWN: |
c906108c SS |
669 | switch (nr_bytes) |
670 | { | |
671 | case 1: new_event->watching = watch_sim_host_1; break; | |
672 | case 2: new_event->watching = watch_sim_host_2; break; | |
673 | case 4: new_event->watching = watch_sim_host_4; break; | |
674 | case 8: new_event->watching = watch_sim_host_8; break; | |
675 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
676 | } | |
677 | break; | |
1ac72f06 | 678 | case BFD_ENDIAN_BIG: |
c906108c SS |
679 | switch (nr_bytes) |
680 | { | |
681 | case 1: new_event->watching = watch_sim_be_1; break; | |
682 | case 2: new_event->watching = watch_sim_be_2; break; | |
683 | case 4: new_event->watching = watch_sim_be_4; break; | |
684 | case 8: new_event->watching = watch_sim_be_8; break; | |
685 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
686 | } | |
687 | break; | |
1ac72f06 | 688 | case BFD_ENDIAN_LITTLE: |
c906108c SS |
689 | switch (nr_bytes) |
690 | { | |
691 | case 1: new_event->watching = watch_sim_le_1; break; | |
692 | case 2: new_event->watching = watch_sim_le_2; break; | |
693 | case 4: new_event->watching = watch_sim_le_4; break; | |
694 | case 8: new_event->watching = watch_sim_le_8; break; | |
695 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); | |
696 | } | |
697 | break; | |
698 | default: | |
699 | sim_io_error (sd, "sim_events_watch_sim - invalid byte order"); | |
700 | } | |
701 | /* handler */ | |
702 | new_event->data = data; | |
703 | new_event->handler = handler; | |
704 | /* data */ | |
705 | new_event->host_addr = host_addr; | |
706 | new_event->lb = lb; | |
707 | new_event->lb64 = lb; | |
708 | new_event->ub = ub; | |
709 | new_event->ub64 = ub; | |
710 | new_event->is_within = (is_within != 0); | |
711 | /* insert */ | |
712 | new_event->next = events->watchpoints; | |
713 | events->watchpoints = new_event; | |
714 | events->work_pending = 1; | |
715 | ETRACE ((_ETRACE, | |
716 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
717 | (long)sim_events_time (sd), | |
718 | (long)new_event, | |
719 | (long)new_event->host_addr, | |
720 | (long)new_event->lb, | |
721 | (long)new_event->ub, | |
722 | (long)new_event->handler, | |
723 | (long)new_event->data)); | |
724 | return new_event; | |
725 | } | |
726 | #endif | |
727 | ||
728 | ||
729 | #if EXTERN_SIM_EVENTS_P | |
730 | sim_event * | |
731 | sim_events_watch_core (SIM_DESC sd, | |
732 | address_word core_addr, | |
733 | unsigned core_map, | |
734 | int nr_bytes, | |
62fe7512 | 735 | enum bfd_endian byte_order, |
c906108c SS |
736 | int is_within, |
737 | unsigned64 lb, | |
738 | unsigned64 ub, | |
739 | sim_event_handler *handler, | |
740 | void *data) | |
741 | { | |
742 | sim_events *events = STATE_EVENTS (sd); | |
743 | sim_event *new_event = sim_events_zalloc (sd); | |
744 | /* type */ | |
745 | switch (byte_order) | |
746 | { | |
1ac72f06 | 747 | case BFD_ENDIAN_UNKNOWN: |
c906108c SS |
748 | switch (nr_bytes) |
749 | { | |
750 | case 1: new_event->watching = watch_core_targ_1; break; | |
751 | case 2: new_event->watching = watch_core_targ_2; break; | |
752 | case 4: new_event->watching = watch_core_targ_4; break; | |
753 | case 8: new_event->watching = watch_core_targ_8; break; | |
754 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
755 | } | |
756 | break; | |
1ac72f06 | 757 | case BFD_ENDIAN_BIG: |
c906108c SS |
758 | switch (nr_bytes) |
759 | { | |
760 | case 1: new_event->watching = watch_core_be_1; break; | |
761 | case 2: new_event->watching = watch_core_be_2; break; | |
762 | case 4: new_event->watching = watch_core_be_4; break; | |
763 | case 8: new_event->watching = watch_core_be_8; break; | |
764 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
765 | } | |
766 | break; | |
1ac72f06 | 767 | case BFD_ENDIAN_LITTLE: |
c906108c SS |
768 | switch (nr_bytes) |
769 | { | |
770 | case 1: new_event->watching = watch_core_le_1; break; | |
771 | case 2: new_event->watching = watch_core_le_2; break; | |
772 | case 4: new_event->watching = watch_core_le_4; break; | |
773 | case 8: new_event->watching = watch_core_le_8; break; | |
774 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); | |
775 | } | |
776 | break; | |
777 | default: | |
778 | sim_io_error (sd, "sim_events_watch_core - invalid byte order"); | |
779 | } | |
780 | /* handler */ | |
781 | new_event->data = data; | |
782 | new_event->handler = handler; | |
783 | /* data */ | |
784 | new_event->core_addr = core_addr; | |
785 | new_event->core_map = core_map; | |
786 | new_event->lb = lb; | |
787 | new_event->lb64 = lb; | |
788 | new_event->ub = ub; | |
789 | new_event->ub64 = ub; | |
790 | new_event->is_within = (is_within != 0); | |
791 | /* insert */ | |
792 | new_event->next = events->watchpoints; | |
793 | events->watchpoints = new_event; | |
794 | events->work_pending = 1; | |
795 | ETRACE ((_ETRACE, | |
796 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", | |
797 | (long)sim_events_time (sd), | |
798 | (long)new_event, | |
799 | (long)new_event->host_addr, | |
800 | (long)new_event->lb, | |
801 | (long)new_event->ub, | |
802 | (long)new_event->handler, | |
803 | (long)new_event->data)); | |
804 | return new_event; | |
805 | } | |
806 | #endif | |
807 | ||
808 | ||
809 | #if EXTERN_SIM_EVENTS_P | |
810 | void | |
811 | sim_events_deschedule (SIM_DESC sd, | |
812 | sim_event *event_to_remove) | |
813 | { | |
814 | sim_events *events = STATE_EVENTS (sd); | |
815 | sim_event *to_remove = (sim_event*)event_to_remove; | |
816 | if (event_to_remove != NULL) | |
817 | { | |
818 | sim_event **queue = NULL; | |
819 | while ((queue = next_event_queue (sd, queue)) != NULL) | |
820 | { | |
821 | sim_event **ptr_to_current; | |
822 | for (ptr_to_current = queue; | |
823 | *ptr_to_current != NULL && *ptr_to_current != to_remove; | |
824 | ptr_to_current = &(*ptr_to_current)->next); | |
825 | if (*ptr_to_current == to_remove) | |
826 | { | |
827 | sim_event *dead = *ptr_to_current; | |
828 | *ptr_to_current = dead->next; | |
829 | ETRACE ((_ETRACE, | |
830 | "event/watch descheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", | |
831 | (long) sim_events_time (sd), | |
832 | (long) event_to_remove, | |
833 | (long) dead->time_of_event, | |
834 | (long) dead->handler, | |
835 | (long) dead->data, | |
836 | (dead->trace != NULL) ? ", " : "", | |
837 | (dead->trace != NULL) ? dead->trace : "")); | |
838 | sim_events_free (sd, dead); | |
839 | update_time_from_event (sd); | |
840 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); | |
841 | return; | |
842 | } | |
843 | } | |
844 | } | |
845 | ETRACE ((_ETRACE, | |
846 | "event/watch descheduled at %ld - tag 0x%lx - not found\n", | |
847 | (long) sim_events_time (sd), | |
848 | (long) event_to_remove)); | |
849 | } | |
850 | #endif | |
851 | ||
852 | ||
853 | STATIC_INLINE_SIM_EVENTS\ | |
854 | (int) | |
855 | sim_watch_valid (SIM_DESC sd, | |
856 | sim_event *to_do) | |
857 | { | |
858 | switch (to_do->watching) | |
859 | { | |
860 | ||
861 | #define WATCH_CORE(N,OP,EXT) \ | |
862 | int ok; \ | |
863 | unsigned_##N word = 0; \ | |
864 | int nr_read = sim_core_read_buffer (sd, NULL, to_do->core_map, &word, \ | |
865 | to_do->core_addr, sizeof (word)); \ | |
866 | OP (word); \ | |
867 | ok = (nr_read == sizeof (unsigned_##N) \ | |
868 | && (to_do->is_within \ | |
869 | == (word >= to_do->lb##EXT \ | |
870 | && word <= to_do->ub##EXT))); | |
871 | ||
872 | case watch_core_targ_1: | |
873 | { | |
874 | WATCH_CORE (1, T2H,); | |
875 | return ok; | |
876 | } | |
877 | case watch_core_targ_2: | |
878 | { | |
879 | WATCH_CORE (2, T2H,); | |
880 | return ok; | |
881 | } | |
882 | case watch_core_targ_4: | |
883 | { | |
884 | WATCH_CORE (4, T2H,); | |
885 | return ok; | |
886 | } | |
887 | case watch_core_targ_8: | |
888 | { | |
889 | WATCH_CORE (8, T2H,64); | |
890 | return ok; | |
891 | } | |
892 | ||
893 | case watch_core_be_1: | |
894 | { | |
895 | WATCH_CORE (1, BE2H,); | |
896 | return ok; | |
897 | } | |
898 | case watch_core_be_2: | |
899 | { | |
900 | WATCH_CORE (2, BE2H,); | |
901 | return ok; | |
902 | } | |
903 | case watch_core_be_4: | |
904 | { | |
905 | WATCH_CORE (4, BE2H,); | |
906 | return ok; | |
907 | } | |
908 | case watch_core_be_8: | |
909 | { | |
910 | WATCH_CORE (8, BE2H,64); | |
911 | return ok; | |
912 | } | |
913 | ||
914 | case watch_core_le_1: | |
915 | { | |
916 | WATCH_CORE (1, LE2H,); | |
917 | return ok; | |
918 | } | |
919 | case watch_core_le_2: | |
920 | { | |
921 | WATCH_CORE (2, LE2H,); | |
922 | return ok; | |
923 | } | |
924 | case watch_core_le_4: | |
925 | { | |
926 | WATCH_CORE (4, LE2H,); | |
927 | return ok; | |
928 | } | |
929 | case watch_core_le_8: | |
930 | { | |
931 | WATCH_CORE (8, LE2H,64); | |
932 | return ok; | |
933 | } | |
934 | #undef WATCH_CORE | |
935 | ||
936 | #define WATCH_SIM(N,OP,EXT) \ | |
937 | int ok; \ | |
938 | unsigned_##N word = *(unsigned_##N*)to_do->host_addr; \ | |
939 | OP (word); \ | |
940 | ok = (to_do->is_within \ | |
941 | == (word >= to_do->lb##EXT \ | |
942 | && word <= to_do->ub##EXT)); | |
943 | ||
944 | case watch_sim_host_1: | |
945 | { | |
946 | WATCH_SIM (1, word = ,); | |
947 | return ok; | |
948 | } | |
949 | case watch_sim_host_2: | |
950 | { | |
951 | WATCH_SIM (2, word = ,); | |
952 | return ok; | |
953 | } | |
954 | case watch_sim_host_4: | |
955 | { | |
956 | WATCH_SIM (4, word = ,); | |
957 | return ok; | |
958 | } | |
959 | case watch_sim_host_8: | |
960 | { | |
961 | WATCH_SIM (8, word = ,64); | |
962 | return ok; | |
963 | } | |
964 | ||
965 | case watch_sim_be_1: | |
966 | { | |
967 | WATCH_SIM (1, BE2H,); | |
968 | return ok; | |
969 | } | |
970 | case watch_sim_be_2: | |
971 | { | |
972 | WATCH_SIM (2, BE2H,); | |
973 | return ok; | |
974 | } | |
975 | case watch_sim_be_4: | |
976 | { | |
977 | WATCH_SIM (4, BE2H,); | |
978 | return ok; | |
979 | } | |
980 | case watch_sim_be_8: | |
981 | { | |
982 | WATCH_SIM (8, BE2H,64); | |
983 | return ok; | |
984 | } | |
985 | ||
986 | case watch_sim_le_1: | |
987 | { | |
988 | WATCH_SIM (1, LE2H,); | |
989 | return ok; | |
990 | } | |
991 | case watch_sim_le_2: | |
992 | { | |
993 | WATCH_SIM (1, LE2H,); | |
994 | return ok; | |
995 | } | |
996 | case watch_sim_le_4: | |
997 | { | |
998 | WATCH_SIM (1, LE2H,); | |
999 | return ok; | |
1000 | } | |
1001 | case watch_sim_le_8: | |
1002 | { | |
1003 | WATCH_SIM (1, LE2H,64); | |
1004 | return ok; | |
1005 | } | |
1006 | #undef WATCH_SIM | |
1007 | ||
4c0d76b9 MF |
1008 | case watch_pc: |
1009 | { | |
1010 | int c; | |
1011 | ||
1012 | for (c = 0; c < MAX_NR_PROCESSORS; ++c) | |
1013 | { | |
1014 | sim_cpu *cpu = STATE_CPU (sd, c); | |
1015 | sim_cia cia = sim_pc_get (cpu); | |
1016 | ||
1017 | if (to_do->is_within == (cia >= to_do->lb64 && cia <= to_do->ub64)) | |
1018 | return 1; | |
1019 | } | |
1020 | return 0; | |
1021 | } | |
1022 | ||
c906108c SS |
1023 | case watch_clock: /* wallclock */ |
1024 | { | |
1025 | unsigned long elapsed_time = sim_events_elapsed_time (sd); | |
1026 | return (elapsed_time >= to_do->wallclock); | |
1027 | } | |
1028 | ||
1029 | default: | |
1030 | sim_io_error (sd, "sim_watch_valid - bad switch"); | |
1031 | break; | |
1032 | ||
1033 | } | |
1034 | return 1; | |
1035 | } | |
1036 | ||
1037 | ||
1038 | INLINE_SIM_EVENTS\ | |
1039 | (int) | |
1040 | sim_events_tick (SIM_DESC sd) | |
1041 | { | |
1042 | sim_events *events = STATE_EVENTS (sd); | |
1043 | ||
1044 | /* this should only be called after the previous ticks have been | |
1045 | fully processed */ | |
1046 | ||
1047 | /* Advance the time but *only* if there is nothing to process */ | |
1048 | if (events->work_pending | |
1049 | || events->time_from_event == 0) | |
1050 | { | |
1051 | events->nr_ticks_to_process += 1; | |
1052 | return 1; | |
1053 | } | |
1054 | else | |
1055 | { | |
1056 | events->time_from_event -= 1; | |
1057 | return 0; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | ||
1062 | INLINE_SIM_EVENTS\ | |
1063 | (int) | |
1064 | sim_events_tickn (SIM_DESC sd, | |
1065 | int n) | |
1066 | { | |
1067 | sim_events *events = STATE_EVENTS (sd); | |
1068 | SIM_ASSERT (n > 0); | |
1069 | ||
1070 | /* this should only be called after the previous ticks have been | |
1071 | fully processed */ | |
1072 | ||
1073 | /* Advance the time but *only* if there is nothing to process */ | |
1074 | if (events->work_pending || events->time_from_event < n) | |
1075 | { | |
1076 | events->nr_ticks_to_process += n; | |
1077 | return 1; | |
1078 | } | |
1079 | else | |
1080 | { | |
1081 | events->time_from_event -= n; | |
1082 | return 0; | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | ||
1087 | INLINE_SIM_EVENTS\ | |
1088 | (void) | |
1089 | sim_events_slip (SIM_DESC sd, | |
1090 | int slip) | |
1091 | { | |
1092 | sim_events *events = STATE_EVENTS (sd); | |
1093 | SIM_ASSERT (slip > 0); | |
1094 | ||
1095 | /* Flag a ready event with work_pending instead of number of ticks | |
1096 | to process so that the time continues to be correct */ | |
1097 | if (events->time_from_event < slip) | |
1098 | { | |
1099 | events->work_pending = 1; | |
1100 | } | |
1101 | events->time_from_event -= slip; | |
1102 | } | |
1103 | ||
1104 | ||
1105 | INLINE_SIM_EVENTS\ | |
1106 | (void) | |
1107 | sim_events_preprocess (SIM_DESC sd, | |
1108 | int events_were_last, | |
1109 | int events_were_next) | |
1110 | { | |
34b47c38 | 1111 | sim_events *events = STATE_EVENTS (sd); |
c906108c SS |
1112 | if (events_were_last) |
1113 | { | |
1114 | /* Halted part way through event processing */ | |
1115 | ASSERT (events->nr_ticks_to_process != 0); | |
1116 | /* The external world can't tell if the event that stopped the | |
1117 | simulator was the last event to process. */ | |
1118 | ASSERT (events_were_next); | |
1119 | sim_events_process (sd); | |
1120 | } | |
1121 | else if (events_were_next) | |
1122 | { | |
1123 | /* Halted by the last processor */ | |
1124 | if (sim_events_tick (sd)) | |
1125 | sim_events_process (sd); | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | ||
1130 | INLINE_SIM_EVENTS\ | |
1131 | (void) | |
1132 | sim_events_process (SIM_DESC sd) | |
1133 | { | |
34b47c38 MF |
1134 | sim_events *events = STATE_EVENTS (sd); |
1135 | signed64 event_time = sim_events_time (sd); | |
c906108c SS |
1136 | |
1137 | /* Clear work_pending before checking nr_held. Clearing | |
1138 | work_pending after nr_held (with out a lock could loose an | |
1139 | event). */ | |
1140 | events->work_pending = 0; | |
1141 | ||
1142 | /* move any events that were asynchronously queued by any signal | |
1143 | handlers onto the real event queue. */ | |
1144 | if (events->nr_held > 0) | |
1145 | { | |
1146 | int i; | |
028f6515 | 1147 | |
c906108c SS |
1148 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
1149 | /*-LOCK-*/ | |
1150 | sigset_t old_mask; | |
1151 | sigset_t new_mask; | |
34b47c38 MF |
1152 | sigfillset (&new_mask); |
1153 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
c906108c SS |
1154 | #endif |
1155 | ||
1156 | for (i = 0; i < events->nr_held; i++) | |
1157 | { | |
1158 | sim_event *entry = &events->held [i]; | |
1159 | sim_events_schedule (sd, | |
1160 | entry->time_of_event, | |
1161 | entry->handler, | |
1162 | entry->data); | |
1163 | } | |
1164 | events->nr_held = 0; | |
028f6515 | 1165 | |
c906108c SS |
1166 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
1167 | /*-UNLOCK-*/ | |
34b47c38 | 1168 | sigprocmask (SIG_SETMASK, &old_mask, NULL); |
c906108c | 1169 | #endif |
028f6515 | 1170 | |
c906108c | 1171 | } |
028f6515 | 1172 | |
c906108c SS |
1173 | /* Process any watchpoints. Be careful to allow a watchpoint to |
1174 | appear/disappear under our feet. | |
1175 | To ensure that watchpoints are processed only once per cycle, | |
1176 | they are moved onto a watched queue, this returned to the | |
1177 | watchpoint queue when all queue processing has been | |
1178 | completed. */ | |
1179 | while (events->watchpoints != NULL) | |
1180 | { | |
1181 | sim_event *to_do = events->watchpoints; | |
1182 | events->watchpoints = to_do->next; | |
1183 | if (sim_watch_valid (sd, to_do)) | |
1184 | { | |
1185 | sim_event_handler *handler = to_do->handler; | |
1186 | void *data = to_do->data; | |
34b47c38 MF |
1187 | ETRACE ((_ETRACE, |
1188 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", | |
1189 | (long) event_time, | |
1190 | (long) to_do, | |
1191 | (long) handler, | |
1192 | (long) data, | |
1193 | (to_do->trace != NULL) ? ", " : "", | |
1194 | (to_do->trace != NULL) ? to_do->trace : "")); | |
c906108c SS |
1195 | sim_events_free (sd, to_do); |
1196 | handler (sd, data); | |
1197 | } | |
1198 | else | |
1199 | { | |
1200 | to_do->next = events->watchedpoints; | |
1201 | events->watchedpoints = to_do; | |
1202 | } | |
1203 | } | |
028f6515 | 1204 | |
c906108c SS |
1205 | /* consume all events for this or earlier times. Be careful to |
1206 | allow an event to appear/disappear under our feet */ | |
1207 | while (events->queue->time_of_event < | |
1208 | (event_time + events->nr_ticks_to_process)) | |
1209 | { | |
1210 | sim_event *to_do = events->queue; | |
1211 | sim_event_handler *handler = to_do->handler; | |
1212 | void *data = to_do->data; | |
1213 | events->queue = to_do->next; | |
1214 | update_time_from_event (sd); | |
34b47c38 MF |
1215 | ETRACE ((_ETRACE, |
1216 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", | |
1217 | (long) event_time, | |
1218 | (long) to_do, | |
1219 | (long) handler, | |
1220 | (long) data, | |
1221 | (to_do->trace != NULL) ? ", " : "", | |
1222 | (to_do->trace != NULL) ? to_do->trace : "")); | |
c906108c SS |
1223 | sim_events_free (sd, to_do); |
1224 | handler (sd, data); | |
1225 | } | |
028f6515 | 1226 | |
c906108c SS |
1227 | /* put things back where they belong ready for the next iteration */ |
1228 | events->watchpoints = events->watchedpoints; | |
1229 | events->watchedpoints = NULL; | |
1230 | if (events->watchpoints != NULL) | |
1231 | events->work_pending = 1; | |
028f6515 | 1232 | |
c906108c SS |
1233 | /* advance the time */ |
1234 | SIM_ASSERT (events->time_from_event >= events->nr_ticks_to_process); | |
1235 | SIM_ASSERT (events->queue != NULL); /* always poll event */ | |
1236 | events->time_from_event -= events->nr_ticks_to_process; | |
1237 | ||
1238 | /* this round of processing complete */ | |
1239 | events->nr_ticks_to_process = 0; | |
c906108c SS |
1240 | } |
1241 | ||
1242 | #endif |