| 1 | /* The common simulator framework for GDB, the GNU Debugger. |
| 2 | |
| 3 | Copyright 2002-2020 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | |
| 23 | #ifndef _SIM_EVENTS_C_ |
| 24 | #define _SIM_EVENTS_C_ |
| 25 | |
| 26 | #include "sim-main.h" |
| 27 | #include "sim-assert.h" |
| 28 | #include "libiberty.h" |
| 29 | |
| 30 | #ifdef HAVE_STRING_H |
| 31 | #include <string.h> |
| 32 | #else |
| 33 | #ifdef HAVE_STRINGS_H |
| 34 | #include <strings.h> |
| 35 | #endif |
| 36 | #endif |
| 37 | |
| 38 | #ifdef HAVE_STDLIB_H |
| 39 | #include <stdlib.h> |
| 40 | #endif |
| 41 | |
| 42 | #include <signal.h> /* For SIGPROCMASK et al. */ |
| 43 | |
| 44 | typedef enum { |
| 45 | watch_invalid, |
| 46 | |
| 47 | /* core - target byte order */ |
| 48 | watch_core_targ_1, |
| 49 | watch_core_targ_2, |
| 50 | watch_core_targ_4, |
| 51 | watch_core_targ_8, |
| 52 | /* core - big-endian */ |
| 53 | watch_core_be_1, |
| 54 | watch_core_be_2, |
| 55 | watch_core_be_4, |
| 56 | watch_core_be_8, |
| 57 | /* core - little-endian */ |
| 58 | watch_core_le_1, |
| 59 | watch_core_le_2, |
| 60 | watch_core_le_4, |
| 61 | watch_core_le_8, |
| 62 | |
| 63 | /* sim - host byte order */ |
| 64 | watch_sim_host_1, |
| 65 | watch_sim_host_2, |
| 66 | watch_sim_host_4, |
| 67 | watch_sim_host_8, |
| 68 | /* sim - big-endian */ |
| 69 | watch_sim_be_1, |
| 70 | watch_sim_be_2, |
| 71 | watch_sim_be_4, |
| 72 | watch_sim_be_8, |
| 73 | /* sim - little-endian */ |
| 74 | watch_sim_le_1, |
| 75 | watch_sim_le_2, |
| 76 | watch_sim_le_4, |
| 77 | watch_sim_le_8, |
| 78 | |
| 79 | /* wallclock */ |
| 80 | watch_clock, |
| 81 | |
| 82 | /* timer */ |
| 83 | watch_timer, |
| 84 | } sim_event_watchpoints; |
| 85 | |
| 86 | |
| 87 | struct _sim_event { |
| 88 | sim_event_watchpoints watching; |
| 89 | void *data; |
| 90 | sim_event_handler *handler; |
| 91 | /* timer event */ |
| 92 | signed64 time_of_event; |
| 93 | /* watch wallclock event */ |
| 94 | unsigned wallclock; |
| 95 | /* watch core address */ |
| 96 | address_word core_addr; |
| 97 | unsigned core_map; |
| 98 | /* watch sim addr */ |
| 99 | void *host_addr; |
| 100 | /* watch core/sim range */ |
| 101 | int is_within; /* 0/1 */ |
| 102 | unsigned ub; |
| 103 | unsigned lb; |
| 104 | unsigned64 ub64; |
| 105 | unsigned64 lb64; |
| 106 | /* trace info (if any) */ |
| 107 | char *trace; |
| 108 | /* list */ |
| 109 | sim_event *next; |
| 110 | }; |
| 111 | |
| 112 | |
| 113 | /* The event queue maintains a single absolute time using two |
| 114 | variables. |
| 115 | |
| 116 | TIME_OF_EVENT: this holds the time at which the next event is ment |
| 117 | to occur. If no next event it will hold the time of the last |
| 118 | event. |
| 119 | |
| 120 | TIME_FROM_EVENT: The current distance from TIME_OF_EVENT. A value |
| 121 | <= 0 (except when poll-event is being processed) indicates that |
| 122 | event processing is due. This variable is decremented once for |
| 123 | each iteration of a clock cycle. |
| 124 | |
| 125 | Initially, the clock is started at time one (0) with TIME_OF_EVENT |
| 126 | == 0 and TIME_FROM_EVENT == 0 and with NR_TICKS_TO_PROCESS == 1. |
| 127 | |
| 128 | Clearly there is a bug in that this code assumes that the absolute |
| 129 | time counter will never become greater than 2^62. |
| 130 | |
| 131 | To avoid the need to use 64bit arithmetic, the event queue always |
| 132 | contains at least one event scheduled every 16 000 ticks. This |
| 133 | limits the time from event counter to values less than |
| 134 | 16 000. */ |
| 135 | |
| 136 | |
| 137 | #if !defined (SIM_EVENTS_POLL_RATE) |
| 138 | #define SIM_EVENTS_POLL_RATE 0x1000 |
| 139 | #endif |
| 140 | |
| 141 | |
| 142 | #define _ETRACE sd, NULL |
| 143 | |
| 144 | #undef ETRACE |
| 145 | #define ETRACE(ARGS) \ |
| 146 | do \ |
| 147 | { \ |
| 148 | if (STRACE_EVENTS_P (sd)) \ |
| 149 | { \ |
| 150 | if (STRACE_DEBUG_P (sd)) \ |
| 151 | trace_printf (sd, NULL, "%s:%d: ", lbasename (__FILE__), __LINE__); \ |
| 152 | trace_printf ARGS; \ |
| 153 | } \ |
| 154 | } \ |
| 155 | while (0) |
| 156 | |
| 157 | |
| 158 | /* event queue iterator - don't iterate over the held queue. */ |
| 159 | |
| 160 | #if EXTERN_SIM_EVENTS_P |
| 161 | static sim_event ** |
| 162 | next_event_queue (SIM_DESC sd, |
| 163 | sim_event **queue) |
| 164 | { |
| 165 | if (queue == NULL) |
| 166 | return &STATE_EVENTS (sd)->queue; |
| 167 | else if (queue == &STATE_EVENTS (sd)->queue) |
| 168 | return &STATE_EVENTS (sd)->watchpoints; |
| 169 | else if (queue == &STATE_EVENTS (sd)->watchpoints) |
| 170 | return &STATE_EVENTS (sd)->watchedpoints; |
| 171 | else if (queue == &STATE_EVENTS (sd)->watchedpoints) |
| 172 | return NULL; |
| 173 | else |
| 174 | sim_io_error (sd, "next_event_queue - bad queue"); |
| 175 | return NULL; |
| 176 | } |
| 177 | #endif |
| 178 | |
| 179 | |
| 180 | STATIC_INLINE_SIM_EVENTS\ |
| 181 | (void) |
| 182 | sim_events_poll (SIM_DESC sd, |
| 183 | void *data) |
| 184 | { |
| 185 | /* just re-schedule in 1000 million ticks time */ |
| 186 | sim_events_schedule (sd, SIM_EVENTS_POLL_RATE, sim_events_poll, sd); |
| 187 | sim_io_poll_quit (sd); |
| 188 | } |
| 189 | |
| 190 | |
| 191 | /* "events" module install handler. |
| 192 | This is called via sim_module_install to install the "events" subsystem |
| 193 | into the simulator. */ |
| 194 | |
| 195 | #if EXTERN_SIM_EVENTS_P |
| 196 | STATIC_SIM_EVENTS (MODULE_UNINSTALL_FN) sim_events_uninstall; |
| 197 | STATIC_SIM_EVENTS (MODULE_INIT_FN) sim_events_init; |
| 198 | STATIC_SIM_EVENTS (MODULE_RESUME_FN) sim_events_resume; |
| 199 | STATIC_SIM_EVENTS (MODULE_SUSPEND_FN) sim_events_suspend; |
| 200 | #endif |
| 201 | |
| 202 | #if EXTERN_SIM_EVENTS_P |
| 203 | SIM_RC |
| 204 | sim_events_install (SIM_DESC sd) |
| 205 | { |
| 206 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 207 | sim_module_add_uninstall_fn (sd, sim_events_uninstall); |
| 208 | sim_module_add_init_fn (sd, sim_events_init); |
| 209 | sim_module_add_resume_fn (sd, sim_events_resume); |
| 210 | sim_module_add_suspend_fn (sd, sim_events_suspend); |
| 211 | return SIM_RC_OK; |
| 212 | } |
| 213 | #endif |
| 214 | |
| 215 | |
| 216 | /* Suspend/resume the event queue manager when the simulator is not |
| 217 | running */ |
| 218 | |
| 219 | #if EXTERN_SIM_EVENTS_P |
| 220 | static SIM_RC |
| 221 | sim_events_resume (SIM_DESC sd) |
| 222 | { |
| 223 | sim_events *events = STATE_EVENTS (sd); |
| 224 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 225 | SIM_ASSERT (events->resume_wallclock == 0); |
| 226 | events->resume_wallclock = sim_elapsed_time_get (); |
| 227 | return SIM_RC_OK; |
| 228 | } |
| 229 | #endif |
| 230 | |
| 231 | #if EXTERN_SIM_EVENTS_P |
| 232 | static SIM_RC |
| 233 | sim_events_suspend (SIM_DESC sd) |
| 234 | { |
| 235 | sim_events *events = STATE_EVENTS (sd); |
| 236 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 237 | SIM_ASSERT (events->resume_wallclock != 0); |
| 238 | events->elapsed_wallclock += sim_elapsed_time_since (events->resume_wallclock); |
| 239 | events->resume_wallclock = 0; |
| 240 | return SIM_RC_OK; |
| 241 | } |
| 242 | #endif |
| 243 | |
| 244 | |
| 245 | /* Uninstall the "events" subsystem from the simulator. */ |
| 246 | |
| 247 | #if EXTERN_SIM_EVENTS_P |
| 248 | static void |
| 249 | sim_events_uninstall (SIM_DESC sd) |
| 250 | { |
| 251 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 252 | /* FIXME: free buffers, etc. */ |
| 253 | } |
| 254 | #endif |
| 255 | |
| 256 | |
| 257 | /* malloc/free */ |
| 258 | |
| 259 | #if EXTERN_SIM_EVENTS_P |
| 260 | static sim_event * |
| 261 | sim_events_zalloc (SIM_DESC sd) |
| 262 | { |
| 263 | sim_events *events = STATE_EVENTS (sd); |
| 264 | sim_event *new = events->free_list; |
| 265 | if (new != NULL) |
| 266 | { |
| 267 | events->free_list = new->next; |
| 268 | memset (new, 0, sizeof (*new)); |
| 269 | } |
| 270 | else |
| 271 | { |
| 272 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) |
| 273 | /*-LOCK-*/ |
| 274 | sigset_t old_mask; |
| 275 | sigset_t new_mask; |
| 276 | sigfillset (&new_mask); |
| 277 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); |
| 278 | #endif |
| 279 | new = ZALLOC (sim_event); |
| 280 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) |
| 281 | /*-UNLOCK-*/ |
| 282 | sigprocmask (SIG_SETMASK, &old_mask, NULL); |
| 283 | #endif |
| 284 | } |
| 285 | return new; |
| 286 | } |
| 287 | #endif |
| 288 | |
| 289 | STATIC_INLINE_SIM_EVENTS\ |
| 290 | (void) |
| 291 | sim_events_free (SIM_DESC sd, |
| 292 | sim_event *dead) |
| 293 | { |
| 294 | sim_events *events = STATE_EVENTS (sd); |
| 295 | dead->next = events->free_list; |
| 296 | events->free_list = dead; |
| 297 | if (dead->trace != NULL) |
| 298 | { |
| 299 | free (dead->trace); /* NB: asprintf returns a `free' buf */ |
| 300 | dead->trace = NULL; |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | |
| 305 | /* Initialize the simulator event manager */ |
| 306 | |
| 307 | #if EXTERN_SIM_EVENTS_P |
| 308 | SIM_RC |
| 309 | sim_events_init (SIM_DESC sd) |
| 310 | { |
| 311 | sim_events *events = STATE_EVENTS (sd); |
| 312 | |
| 313 | /* drain the interrupt queue */ |
| 314 | events->nr_held = 0; |
| 315 | if (events->held == NULL) |
| 316 | events->held = NZALLOC (sim_event, MAX_NR_SIGNAL_SIM_EVENTS); |
| 317 | |
| 318 | /* drain the normal queues */ |
| 319 | { |
| 320 | sim_event **queue = NULL; |
| 321 | while ((queue = next_event_queue (sd, queue)) != NULL) |
| 322 | { |
| 323 | if (queue == NULL) break; |
| 324 | while (*queue != NULL) |
| 325 | { |
| 326 | sim_event *dead = *queue; |
| 327 | *queue = dead->next; |
| 328 | sim_events_free (sd, dead); |
| 329 | } |
| 330 | *queue = NULL; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | /* wind time back to zero */ |
| 335 | events->nr_ticks_to_process = 1; /* start by doing queue */ |
| 336 | events->time_of_event = 0; |
| 337 | events->time_from_event = 0; |
| 338 | events->elapsed_wallclock = 0; |
| 339 | events->resume_wallclock = 0; |
| 340 | |
| 341 | /* schedule our initial counter event */ |
| 342 | sim_events_schedule (sd, 0, sim_events_poll, sd); |
| 343 | |
| 344 | /* from now on, except when the large-int event is being processed |
| 345 | the event queue is non empty */ |
| 346 | SIM_ASSERT (events->queue != NULL); |
| 347 | |
| 348 | return SIM_RC_OK; |
| 349 | } |
| 350 | #endif |
| 351 | |
| 352 | |
| 353 | INLINE_SIM_EVENTS\ |
| 354 | (signed64) |
| 355 | sim_events_time (SIM_DESC sd) |
| 356 | { |
| 357 | sim_events *events = STATE_EVENTS (sd); |
| 358 | return (events->time_of_event - events->time_from_event); |
| 359 | } |
| 360 | |
| 361 | |
| 362 | INLINE_SIM_EVENTS\ |
| 363 | (unsigned long) |
| 364 | sim_events_elapsed_time (SIM_DESC sd) |
| 365 | { |
| 366 | unsigned long elapsed = STATE_EVENTS (sd)->elapsed_wallclock; |
| 367 | |
| 368 | /* Are we being called inside sim_resume? |
| 369 | (Is there a simulation in progress?) */ |
| 370 | if (STATE_EVENTS (sd)->resume_wallclock != 0) |
| 371 | elapsed += sim_elapsed_time_since (STATE_EVENTS (sd)->resume_wallclock); |
| 372 | |
| 373 | return elapsed; |
| 374 | } |
| 375 | |
| 376 | |
| 377 | /* Returns the time that remains before the event is raised. */ |
| 378 | INLINE_SIM_EVENTS\ |
| 379 | (signed64) |
| 380 | sim_events_remain_time (SIM_DESC sd, sim_event *event) |
| 381 | { |
| 382 | if (event == 0) |
| 383 | return 0; |
| 384 | |
| 385 | return (event->time_of_event - sim_events_time (sd)); |
| 386 | } |
| 387 | |
| 388 | |
| 389 | |
| 390 | STATIC_INLINE_SIM_EVENTS\ |
| 391 | (void) |
| 392 | update_time_from_event (SIM_DESC sd) |
| 393 | { |
| 394 | sim_events *events = STATE_EVENTS (sd); |
| 395 | signed64 current_time = sim_events_time (sd); |
| 396 | if (events->queue != NULL) |
| 397 | { |
| 398 | events->time_of_event = events->queue->time_of_event; |
| 399 | events->time_from_event = (events->queue->time_of_event - current_time); |
| 400 | } |
| 401 | else |
| 402 | { |
| 403 | events->time_of_event = current_time - 1; |
| 404 | events->time_from_event = -1; |
| 405 | } |
| 406 | if (STRACE_EVENTS_P (sd)) |
| 407 | { |
| 408 | sim_event *event; |
| 409 | int i; |
| 410 | for (event = events->queue, i = 0; |
| 411 | event != NULL; |
| 412 | event = event->next, i++) |
| 413 | { |
| 414 | ETRACE ((_ETRACE, |
| 415 | "event time-from-event - time %ld, delta %ld - event %d, tag 0x%lx, time %ld, handler 0x%lx, data 0x%lx%s%s\n", |
| 416 | (long)current_time, |
| 417 | (long)events->time_from_event, |
| 418 | i, |
| 419 | (long)event, |
| 420 | (long)event->time_of_event, |
| 421 | (long)event->handler, |
| 422 | (long)event->data, |
| 423 | (event->trace != NULL) ? ", " : "", |
| 424 | (event->trace != NULL) ? event->trace : "")); |
| 425 | } |
| 426 | } |
| 427 | SIM_ASSERT (current_time == sim_events_time (sd)); |
| 428 | } |
| 429 | |
| 430 | |
| 431 | #if EXTERN_SIM_EVENTS_P |
| 432 | static void |
| 433 | insert_sim_event (SIM_DESC sd, |
| 434 | sim_event *new_event, |
| 435 | signed64 delta) |
| 436 | { |
| 437 | sim_events *events = STATE_EVENTS (sd); |
| 438 | sim_event *curr; |
| 439 | sim_event **prev; |
| 440 | signed64 time_of_event; |
| 441 | |
| 442 | if (delta < 0) |
| 443 | sim_io_error (sd, "what is past is past!\n"); |
| 444 | |
| 445 | /* compute when the event should occur */ |
| 446 | time_of_event = sim_events_time (sd) + delta; |
| 447 | |
| 448 | /* find the queue insertion point - things are time ordered */ |
| 449 | prev = &events->queue; |
| 450 | curr = events->queue; |
| 451 | while (curr != NULL && time_of_event >= curr->time_of_event) |
| 452 | { |
| 453 | SIM_ASSERT (curr->next == NULL |
| 454 | || curr->time_of_event <= curr->next->time_of_event); |
| 455 | prev = &curr->next; |
| 456 | curr = curr->next; |
| 457 | } |
| 458 | SIM_ASSERT (curr == NULL || time_of_event < curr->time_of_event); |
| 459 | |
| 460 | /* insert it */ |
| 461 | new_event->next = curr; |
| 462 | *prev = new_event; |
| 463 | new_event->time_of_event = time_of_event; |
| 464 | |
| 465 | /* adjust the time until the first event */ |
| 466 | update_time_from_event (sd); |
| 467 | } |
| 468 | #endif |
| 469 | |
| 470 | |
| 471 | #if EXTERN_SIM_EVENTS_P |
| 472 | sim_event * |
| 473 | sim_events_schedule (SIM_DESC sd, |
| 474 | signed64 delta_time, |
| 475 | sim_event_handler *handler, |
| 476 | void *data) |
| 477 | { |
| 478 | va_list dummy; |
| 479 | memset (&dummy, 0, sizeof dummy); |
| 480 | return sim_events_schedule_vtracef (sd, delta_time, handler, data, |
| 481 | NULL, dummy); |
| 482 | } |
| 483 | #endif |
| 484 | |
| 485 | |
| 486 | #if EXTERN_SIM_EVENTS_P |
| 487 | sim_event * |
| 488 | sim_events_schedule_tracef (SIM_DESC sd, |
| 489 | signed64 delta_time, |
| 490 | sim_event_handler *handler, |
| 491 | void *data, |
| 492 | const char *fmt, |
| 493 | ...) |
| 494 | { |
| 495 | sim_event *new_event; |
| 496 | va_list ap; |
| 497 | va_start (ap, fmt); |
| 498 | new_event = sim_events_schedule_vtracef (sd, delta_time, handler, data, fmt, ap); |
| 499 | va_end (ap); |
| 500 | return new_event; |
| 501 | } |
| 502 | #endif |
| 503 | |
| 504 | |
| 505 | #if EXTERN_SIM_EVENTS_P |
| 506 | sim_event * |
| 507 | sim_events_schedule_vtracef (SIM_DESC sd, |
| 508 | signed64 delta_time, |
| 509 | sim_event_handler *handler, |
| 510 | void *data, |
| 511 | const char *fmt, |
| 512 | va_list ap) |
| 513 | { |
| 514 | sim_event *new_event = sim_events_zalloc (sd); |
| 515 | new_event->data = data; |
| 516 | new_event->handler = handler; |
| 517 | new_event->watching = watch_timer; |
| 518 | if (fmt == NULL || !STRACE_EVENTS_P (sd) || vasprintf (&new_event->trace, fmt, ap) < 0) |
| 519 | new_event->trace = NULL; |
| 520 | insert_sim_event (sd, new_event, delta_time); |
| 521 | ETRACE ((_ETRACE, |
| 522 | "event scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", |
| 523 | (long)sim_events_time (sd), |
| 524 | (long)new_event, |
| 525 | (long)new_event->time_of_event, |
| 526 | (long)new_event->handler, |
| 527 | (long)new_event->data, |
| 528 | (new_event->trace != NULL) ? ", " : "", |
| 529 | (new_event->trace != NULL) ? new_event->trace : "")); |
| 530 | return new_event; |
| 531 | } |
| 532 | #endif |
| 533 | |
| 534 | |
| 535 | #if EXTERN_SIM_EVENTS_P |
| 536 | void |
| 537 | sim_events_schedule_after_signal (SIM_DESC sd, |
| 538 | signed64 delta_time, |
| 539 | sim_event_handler *handler, |
| 540 | void *data) |
| 541 | { |
| 542 | sim_events *events = STATE_EVENTS (sd); |
| 543 | sim_event *new_event; |
| 544 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) |
| 545 | /*-LOCK-*/ |
| 546 | sigset_t old_mask; |
| 547 | sigset_t new_mask; |
| 548 | sigfillset (&new_mask); |
| 549 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); |
| 550 | #endif |
| 551 | |
| 552 | /* allocate an event entry from the signal buffer */ |
| 553 | new_event = &events->held [events->nr_held]; |
| 554 | events->nr_held ++; |
| 555 | if (events->nr_held > MAX_NR_SIGNAL_SIM_EVENTS) |
| 556 | { |
| 557 | sim_engine_abort (NULL, NULL, NULL_CIA, |
| 558 | "sim_events_schedule_after_signal - buffer overflow"); |
| 559 | } |
| 560 | |
| 561 | new_event->data = data; |
| 562 | new_event->handler = handler; |
| 563 | new_event->time_of_event = delta_time; /* work it out later */ |
| 564 | new_event->next = NULL; |
| 565 | |
| 566 | events->work_pending = 1; /* notify main process */ |
| 567 | |
| 568 | #if defined (HAVE_SIGPROCMASK) && defined (SIG_SETMASK) |
| 569 | /*-UNLOCK-*/ |
| 570 | sigprocmask (SIG_SETMASK, &old_mask, NULL); |
| 571 | #endif |
| 572 | |
| 573 | ETRACE ((_ETRACE, |
| 574 | "signal scheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx\n", |
| 575 | (long)sim_events_time (sd), |
| 576 | (long)new_event, |
| 577 | (long)new_event->time_of_event, |
| 578 | (long)new_event->handler, |
| 579 | (long)new_event->data)); |
| 580 | } |
| 581 | #endif |
| 582 | |
| 583 | |
| 584 | #if EXTERN_SIM_EVENTS_P |
| 585 | sim_event * |
| 586 | sim_events_watch_clock (SIM_DESC sd, |
| 587 | unsigned delta_ms_time, |
| 588 | sim_event_handler *handler, |
| 589 | void *data) |
| 590 | { |
| 591 | sim_events *events = STATE_EVENTS (sd); |
| 592 | sim_event *new_event = sim_events_zalloc (sd); |
| 593 | /* type */ |
| 594 | new_event->watching = watch_clock; |
| 595 | /* handler */ |
| 596 | new_event->data = data; |
| 597 | new_event->handler = handler; |
| 598 | /* data */ |
| 599 | if (events->resume_wallclock == 0) |
| 600 | new_event->wallclock = (events->elapsed_wallclock + delta_ms_time); |
| 601 | else |
| 602 | new_event->wallclock = (events->elapsed_wallclock |
| 603 | + sim_elapsed_time_since (events->resume_wallclock) |
| 604 | + delta_ms_time); |
| 605 | /* insert */ |
| 606 | new_event->next = events->watchpoints; |
| 607 | events->watchpoints = new_event; |
| 608 | events->work_pending = 1; |
| 609 | ETRACE ((_ETRACE, |
| 610 | "event watching clock at %ld - tag 0x%lx - wallclock %ld, handler 0x%lx, data 0x%lx\n", |
| 611 | (long)sim_events_time (sd), |
| 612 | (long)new_event, |
| 613 | (long)new_event->wallclock, |
| 614 | (long)new_event->handler, |
| 615 | (long)new_event->data)); |
| 616 | return new_event; |
| 617 | } |
| 618 | #endif |
| 619 | |
| 620 | |
| 621 | #if EXTERN_SIM_EVENTS_P |
| 622 | sim_event * |
| 623 | sim_events_watch_sim (SIM_DESC sd, |
| 624 | void *host_addr, |
| 625 | int nr_bytes, |
| 626 | int byte_order, |
| 627 | int is_within, |
| 628 | unsigned64 lb, |
| 629 | unsigned64 ub, |
| 630 | sim_event_handler *handler, |
| 631 | void *data) |
| 632 | { |
| 633 | sim_events *events = STATE_EVENTS (sd); |
| 634 | sim_event *new_event = sim_events_zalloc (sd); |
| 635 | /* type */ |
| 636 | switch (byte_order) |
| 637 | { |
| 638 | case BFD_ENDIAN_UNKNOWN: |
| 639 | switch (nr_bytes) |
| 640 | { |
| 641 | case 1: new_event->watching = watch_sim_host_1; break; |
| 642 | case 2: new_event->watching = watch_sim_host_2; break; |
| 643 | case 4: new_event->watching = watch_sim_host_4; break; |
| 644 | case 8: new_event->watching = watch_sim_host_8; break; |
| 645 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); |
| 646 | } |
| 647 | break; |
| 648 | case BFD_ENDIAN_BIG: |
| 649 | switch (nr_bytes) |
| 650 | { |
| 651 | case 1: new_event->watching = watch_sim_be_1; break; |
| 652 | case 2: new_event->watching = watch_sim_be_2; break; |
| 653 | case 4: new_event->watching = watch_sim_be_4; break; |
| 654 | case 8: new_event->watching = watch_sim_be_8; break; |
| 655 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); |
| 656 | } |
| 657 | break; |
| 658 | case BFD_ENDIAN_LITTLE: |
| 659 | switch (nr_bytes) |
| 660 | { |
| 661 | case 1: new_event->watching = watch_sim_le_1; break; |
| 662 | case 2: new_event->watching = watch_sim_le_2; break; |
| 663 | case 4: new_event->watching = watch_sim_le_4; break; |
| 664 | case 8: new_event->watching = watch_sim_le_8; break; |
| 665 | default: sim_io_error (sd, "sim_events_watch_sim - invalid nr bytes"); |
| 666 | } |
| 667 | break; |
| 668 | default: |
| 669 | sim_io_error (sd, "sim_events_watch_sim - invalid byte order"); |
| 670 | } |
| 671 | /* handler */ |
| 672 | new_event->data = data; |
| 673 | new_event->handler = handler; |
| 674 | /* data */ |
| 675 | new_event->host_addr = host_addr; |
| 676 | new_event->lb = lb; |
| 677 | new_event->lb64 = lb; |
| 678 | new_event->ub = ub; |
| 679 | new_event->ub64 = ub; |
| 680 | new_event->is_within = (is_within != 0); |
| 681 | /* insert */ |
| 682 | new_event->next = events->watchpoints; |
| 683 | events->watchpoints = new_event; |
| 684 | events->work_pending = 1; |
| 685 | ETRACE ((_ETRACE, |
| 686 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", |
| 687 | (long)sim_events_time (sd), |
| 688 | (long)new_event, |
| 689 | (long)new_event->host_addr, |
| 690 | (long)new_event->lb, |
| 691 | (long)new_event->ub, |
| 692 | (long)new_event->handler, |
| 693 | (long)new_event->data)); |
| 694 | return new_event; |
| 695 | } |
| 696 | #endif |
| 697 | |
| 698 | |
| 699 | #if EXTERN_SIM_EVENTS_P |
| 700 | sim_event * |
| 701 | sim_events_watch_core (SIM_DESC sd, |
| 702 | address_word core_addr, |
| 703 | unsigned core_map, |
| 704 | int nr_bytes, |
| 705 | int byte_order, |
| 706 | int is_within, |
| 707 | unsigned64 lb, |
| 708 | unsigned64 ub, |
| 709 | sim_event_handler *handler, |
| 710 | void *data) |
| 711 | { |
| 712 | sim_events *events = STATE_EVENTS (sd); |
| 713 | sim_event *new_event = sim_events_zalloc (sd); |
| 714 | /* type */ |
| 715 | switch (byte_order) |
| 716 | { |
| 717 | case BFD_ENDIAN_UNKNOWN: |
| 718 | switch (nr_bytes) |
| 719 | { |
| 720 | case 1: new_event->watching = watch_core_targ_1; break; |
| 721 | case 2: new_event->watching = watch_core_targ_2; break; |
| 722 | case 4: new_event->watching = watch_core_targ_4; break; |
| 723 | case 8: new_event->watching = watch_core_targ_8; break; |
| 724 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); |
| 725 | } |
| 726 | break; |
| 727 | case BFD_ENDIAN_BIG: |
| 728 | switch (nr_bytes) |
| 729 | { |
| 730 | case 1: new_event->watching = watch_core_be_1; break; |
| 731 | case 2: new_event->watching = watch_core_be_2; break; |
| 732 | case 4: new_event->watching = watch_core_be_4; break; |
| 733 | case 8: new_event->watching = watch_core_be_8; break; |
| 734 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); |
| 735 | } |
| 736 | break; |
| 737 | case BFD_ENDIAN_LITTLE: |
| 738 | switch (nr_bytes) |
| 739 | { |
| 740 | case 1: new_event->watching = watch_core_le_1; break; |
| 741 | case 2: new_event->watching = watch_core_le_2; break; |
| 742 | case 4: new_event->watching = watch_core_le_4; break; |
| 743 | case 8: new_event->watching = watch_core_le_8; break; |
| 744 | default: sim_io_error (sd, "sim_events_watch_core - invalid nr bytes"); |
| 745 | } |
| 746 | break; |
| 747 | default: |
| 748 | sim_io_error (sd, "sim_events_watch_core - invalid byte order"); |
| 749 | } |
| 750 | /* handler */ |
| 751 | new_event->data = data; |
| 752 | new_event->handler = handler; |
| 753 | /* data */ |
| 754 | new_event->core_addr = core_addr; |
| 755 | new_event->core_map = core_map; |
| 756 | new_event->lb = lb; |
| 757 | new_event->lb64 = lb; |
| 758 | new_event->ub = ub; |
| 759 | new_event->ub64 = ub; |
| 760 | new_event->is_within = (is_within != 0); |
| 761 | /* insert */ |
| 762 | new_event->next = events->watchpoints; |
| 763 | events->watchpoints = new_event; |
| 764 | events->work_pending = 1; |
| 765 | ETRACE ((_ETRACE, |
| 766 | "event watching host at %ld - tag 0x%lx - host-addr 0x%lx, 0x%lx..0x%lx, handler 0x%lx, data 0x%lx\n", |
| 767 | (long)sim_events_time (sd), |
| 768 | (long)new_event, |
| 769 | (long)new_event->host_addr, |
| 770 | (long)new_event->lb, |
| 771 | (long)new_event->ub, |
| 772 | (long)new_event->handler, |
| 773 | (long)new_event->data)); |
| 774 | return new_event; |
| 775 | } |
| 776 | #endif |
| 777 | |
| 778 | |
| 779 | #if EXTERN_SIM_EVENTS_P |
| 780 | void |
| 781 | sim_events_deschedule (SIM_DESC sd, |
| 782 | sim_event *event_to_remove) |
| 783 | { |
| 784 | sim_events *events = STATE_EVENTS (sd); |
| 785 | sim_event *to_remove = (sim_event*)event_to_remove; |
| 786 | if (event_to_remove != NULL) |
| 787 | { |
| 788 | sim_event **queue = NULL; |
| 789 | while ((queue = next_event_queue (sd, queue)) != NULL) |
| 790 | { |
| 791 | sim_event **ptr_to_current; |
| 792 | for (ptr_to_current = queue; |
| 793 | *ptr_to_current != NULL && *ptr_to_current != to_remove; |
| 794 | ptr_to_current = &(*ptr_to_current)->next); |
| 795 | if (*ptr_to_current == to_remove) |
| 796 | { |
| 797 | sim_event *dead = *ptr_to_current; |
| 798 | *ptr_to_current = dead->next; |
| 799 | ETRACE ((_ETRACE, |
| 800 | "event/watch descheduled at %ld - tag 0x%lx - time %ld, handler 0x%lx, data 0x%lx%s%s\n", |
| 801 | (long) sim_events_time (sd), |
| 802 | (long) event_to_remove, |
| 803 | (long) dead->time_of_event, |
| 804 | (long) dead->handler, |
| 805 | (long) dead->data, |
| 806 | (dead->trace != NULL) ? ", " : "", |
| 807 | (dead->trace != NULL) ? dead->trace : "")); |
| 808 | sim_events_free (sd, dead); |
| 809 | update_time_from_event (sd); |
| 810 | SIM_ASSERT ((events->time_from_event >= 0) == (events->queue != NULL)); |
| 811 | return; |
| 812 | } |
| 813 | } |
| 814 | } |
| 815 | ETRACE ((_ETRACE, |
| 816 | "event/watch descheduled at %ld - tag 0x%lx - not found\n", |
| 817 | (long) sim_events_time (sd), |
| 818 | (long) event_to_remove)); |
| 819 | } |
| 820 | #endif |
| 821 | |
| 822 | |
| 823 | STATIC_INLINE_SIM_EVENTS\ |
| 824 | (int) |
| 825 | sim_watch_valid (SIM_DESC sd, |
| 826 | sim_event *to_do) |
| 827 | { |
| 828 | switch (to_do->watching) |
| 829 | { |
| 830 | |
| 831 | #define WATCH_CORE(N,OP,EXT) \ |
| 832 | int ok; \ |
| 833 | unsigned_##N word = 0; \ |
| 834 | int nr_read = sim_core_read_buffer (sd, NULL, to_do->core_map, &word, \ |
| 835 | to_do->core_addr, sizeof (word)); \ |
| 836 | OP (word); \ |
| 837 | ok = (nr_read == sizeof (unsigned_##N) \ |
| 838 | && (to_do->is_within \ |
| 839 | == (word >= to_do->lb##EXT \ |
| 840 | && word <= to_do->ub##EXT))); |
| 841 | |
| 842 | case watch_core_targ_1: |
| 843 | { |
| 844 | WATCH_CORE (1, T2H,); |
| 845 | return ok; |
| 846 | } |
| 847 | case watch_core_targ_2: |
| 848 | { |
| 849 | WATCH_CORE (2, T2H,); |
| 850 | return ok; |
| 851 | } |
| 852 | case watch_core_targ_4: |
| 853 | { |
| 854 | WATCH_CORE (4, T2H,); |
| 855 | return ok; |
| 856 | } |
| 857 | case watch_core_targ_8: |
| 858 | { |
| 859 | WATCH_CORE (8, T2H,64); |
| 860 | return ok; |
| 861 | } |
| 862 | |
| 863 | case watch_core_be_1: |
| 864 | { |
| 865 | WATCH_CORE (1, BE2H,); |
| 866 | return ok; |
| 867 | } |
| 868 | case watch_core_be_2: |
| 869 | { |
| 870 | WATCH_CORE (2, BE2H,); |
| 871 | return ok; |
| 872 | } |
| 873 | case watch_core_be_4: |
| 874 | { |
| 875 | WATCH_CORE (4, BE2H,); |
| 876 | return ok; |
| 877 | } |
| 878 | case watch_core_be_8: |
| 879 | { |
| 880 | WATCH_CORE (8, BE2H,64); |
| 881 | return ok; |
| 882 | } |
| 883 | |
| 884 | case watch_core_le_1: |
| 885 | { |
| 886 | WATCH_CORE (1, LE2H,); |
| 887 | return ok; |
| 888 | } |
| 889 | case watch_core_le_2: |
| 890 | { |
| 891 | WATCH_CORE (2, LE2H,); |
| 892 | return ok; |
| 893 | } |
| 894 | case watch_core_le_4: |
| 895 | { |
| 896 | WATCH_CORE (4, LE2H,); |
| 897 | return ok; |
| 898 | } |
| 899 | case watch_core_le_8: |
| 900 | { |
| 901 | WATCH_CORE (8, LE2H,64); |
| 902 | return ok; |
| 903 | } |
| 904 | #undef WATCH_CORE |
| 905 | |
| 906 | #define WATCH_SIM(N,OP,EXT) \ |
| 907 | int ok; \ |
| 908 | unsigned_##N word = *(unsigned_##N*)to_do->host_addr; \ |
| 909 | OP (word); \ |
| 910 | ok = (to_do->is_within \ |
| 911 | == (word >= to_do->lb##EXT \ |
| 912 | && word <= to_do->ub##EXT)); |
| 913 | |
| 914 | case watch_sim_host_1: |
| 915 | { |
| 916 | WATCH_SIM (1, word = ,); |
| 917 | return ok; |
| 918 | } |
| 919 | case watch_sim_host_2: |
| 920 | { |
| 921 | WATCH_SIM (2, word = ,); |
| 922 | return ok; |
| 923 | } |
| 924 | case watch_sim_host_4: |
| 925 | { |
| 926 | WATCH_SIM (4, word = ,); |
| 927 | return ok; |
| 928 | } |
| 929 | case watch_sim_host_8: |
| 930 | { |
| 931 | WATCH_SIM (8, word = ,64); |
| 932 | return ok; |
| 933 | } |
| 934 | |
| 935 | case watch_sim_be_1: |
| 936 | { |
| 937 | WATCH_SIM (1, BE2H,); |
| 938 | return ok; |
| 939 | } |
| 940 | case watch_sim_be_2: |
| 941 | { |
| 942 | WATCH_SIM (2, BE2H,); |
| 943 | return ok; |
| 944 | } |
| 945 | case watch_sim_be_4: |
| 946 | { |
| 947 | WATCH_SIM (4, BE2H,); |
| 948 | return ok; |
| 949 | } |
| 950 | case watch_sim_be_8: |
| 951 | { |
| 952 | WATCH_SIM (8, BE2H,64); |
| 953 | return ok; |
| 954 | } |
| 955 | |
| 956 | case watch_sim_le_1: |
| 957 | { |
| 958 | WATCH_SIM (1, LE2H,); |
| 959 | return ok; |
| 960 | } |
| 961 | case watch_sim_le_2: |
| 962 | { |
| 963 | WATCH_SIM (1, LE2H,); |
| 964 | return ok; |
| 965 | } |
| 966 | case watch_sim_le_4: |
| 967 | { |
| 968 | WATCH_SIM (1, LE2H,); |
| 969 | return ok; |
| 970 | } |
| 971 | case watch_sim_le_8: |
| 972 | { |
| 973 | WATCH_SIM (1, LE2H,64); |
| 974 | return ok; |
| 975 | } |
| 976 | #undef WATCH_SIM |
| 977 | |
| 978 | case watch_clock: /* wallclock */ |
| 979 | { |
| 980 | unsigned long elapsed_time = sim_events_elapsed_time (sd); |
| 981 | return (elapsed_time >= to_do->wallclock); |
| 982 | } |
| 983 | |
| 984 | default: |
| 985 | sim_io_error (sd, "sim_watch_valid - bad switch"); |
| 986 | break; |
| 987 | |
| 988 | } |
| 989 | return 1; |
| 990 | } |
| 991 | |
| 992 | |
| 993 | INLINE_SIM_EVENTS\ |
| 994 | (int) |
| 995 | sim_events_tick (SIM_DESC sd) |
| 996 | { |
| 997 | sim_events *events = STATE_EVENTS (sd); |
| 998 | |
| 999 | /* this should only be called after the previous ticks have been |
| 1000 | fully processed */ |
| 1001 | |
| 1002 | /* Advance the time but *only* if there is nothing to process */ |
| 1003 | if (events->work_pending |
| 1004 | || events->time_from_event == 0) |
| 1005 | { |
| 1006 | events->nr_ticks_to_process += 1; |
| 1007 | return 1; |
| 1008 | } |
| 1009 | else |
| 1010 | { |
| 1011 | events->time_from_event -= 1; |
| 1012 | return 0; |
| 1013 | } |
| 1014 | } |
| 1015 | |
| 1016 | |
| 1017 | INLINE_SIM_EVENTS\ |
| 1018 | (int) |
| 1019 | sim_events_tickn (SIM_DESC sd, |
| 1020 | int n) |
| 1021 | { |
| 1022 | sim_events *events = STATE_EVENTS (sd); |
| 1023 | SIM_ASSERT (n > 0); |
| 1024 | |
| 1025 | /* this should only be called after the previous ticks have been |
| 1026 | fully processed */ |
| 1027 | |
| 1028 | /* Advance the time but *only* if there is nothing to process */ |
| 1029 | if (events->work_pending || events->time_from_event < n) |
| 1030 | { |
| 1031 | events->nr_ticks_to_process += n; |
| 1032 | return 1; |
| 1033 | } |
| 1034 | else |
| 1035 | { |
| 1036 | events->time_from_event -= n; |
| 1037 | return 0; |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | |
| 1042 | INLINE_SIM_EVENTS\ |
| 1043 | (void) |
| 1044 | sim_events_slip (SIM_DESC sd, |
| 1045 | int slip) |
| 1046 | { |
| 1047 | sim_events *events = STATE_EVENTS (sd); |
| 1048 | SIM_ASSERT (slip > 0); |
| 1049 | |
| 1050 | /* Flag a ready event with work_pending instead of number of ticks |
| 1051 | to process so that the time continues to be correct */ |
| 1052 | if (events->time_from_event < slip) |
| 1053 | { |
| 1054 | events->work_pending = 1; |
| 1055 | } |
| 1056 | events->time_from_event -= slip; |
| 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | INLINE_SIM_EVENTS\ |
| 1061 | (void) |
| 1062 | sim_events_preprocess (SIM_DESC sd, |
| 1063 | int events_were_last, |
| 1064 | int events_were_next) |
| 1065 | { |
| 1066 | sim_events *events = STATE_EVENTS (sd); |
| 1067 | if (events_were_last) |
| 1068 | { |
| 1069 | /* Halted part way through event processing */ |
| 1070 | ASSERT (events->nr_ticks_to_process != 0); |
| 1071 | /* The external world can't tell if the event that stopped the |
| 1072 | simulator was the last event to process. */ |
| 1073 | ASSERT (events_were_next); |
| 1074 | sim_events_process (sd); |
| 1075 | } |
| 1076 | else if (events_were_next) |
| 1077 | { |
| 1078 | /* Halted by the last processor */ |
| 1079 | if (sim_events_tick (sd)) |
| 1080 | sim_events_process (sd); |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | INLINE_SIM_EVENTS\ |
| 1086 | (void) |
| 1087 | sim_events_process (SIM_DESC sd) |
| 1088 | { |
| 1089 | sim_events *events = STATE_EVENTS (sd); |
| 1090 | signed64 event_time = sim_events_time (sd); |
| 1091 | |
| 1092 | /* Clear work_pending before checking nr_held. Clearing |
| 1093 | work_pending after nr_held (with out a lock could loose an |
| 1094 | event). */ |
| 1095 | events->work_pending = 0; |
| 1096 | |
| 1097 | /* move any events that were asynchronously queued by any signal |
| 1098 | handlers onto the real event queue. */ |
| 1099 | if (events->nr_held > 0) |
| 1100 | { |
| 1101 | int i; |
| 1102 | |
| 1103 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
| 1104 | /*-LOCK-*/ |
| 1105 | sigset_t old_mask; |
| 1106 | sigset_t new_mask; |
| 1107 | sigfillset (&new_mask); |
| 1108 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); |
| 1109 | #endif |
| 1110 | |
| 1111 | for (i = 0; i < events->nr_held; i++) |
| 1112 | { |
| 1113 | sim_event *entry = &events->held [i]; |
| 1114 | sim_events_schedule (sd, |
| 1115 | entry->time_of_event, |
| 1116 | entry->handler, |
| 1117 | entry->data); |
| 1118 | } |
| 1119 | events->nr_held = 0; |
| 1120 | |
| 1121 | #if defined(HAVE_SIGPROCMASK) && defined(SIG_SETMASK) |
| 1122 | /*-UNLOCK-*/ |
| 1123 | sigprocmask (SIG_SETMASK, &old_mask, NULL); |
| 1124 | #endif |
| 1125 | |
| 1126 | } |
| 1127 | |
| 1128 | /* Process any watchpoints. Be careful to allow a watchpoint to |
| 1129 | appear/disappear under our feet. |
| 1130 | To ensure that watchpoints are processed only once per cycle, |
| 1131 | they are moved onto a watched queue, this returned to the |
| 1132 | watchpoint queue when all queue processing has been |
| 1133 | completed. */ |
| 1134 | while (events->watchpoints != NULL) |
| 1135 | { |
| 1136 | sim_event *to_do = events->watchpoints; |
| 1137 | events->watchpoints = to_do->next; |
| 1138 | if (sim_watch_valid (sd, to_do)) |
| 1139 | { |
| 1140 | sim_event_handler *handler = to_do->handler; |
| 1141 | void *data = to_do->data; |
| 1142 | ETRACE ((_ETRACE, |
| 1143 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", |
| 1144 | (long) event_time, |
| 1145 | (long) to_do, |
| 1146 | (long) handler, |
| 1147 | (long) data, |
| 1148 | (to_do->trace != NULL) ? ", " : "", |
| 1149 | (to_do->trace != NULL) ? to_do->trace : "")); |
| 1150 | sim_events_free (sd, to_do); |
| 1151 | handler (sd, data); |
| 1152 | } |
| 1153 | else |
| 1154 | { |
| 1155 | to_do->next = events->watchedpoints; |
| 1156 | events->watchedpoints = to_do; |
| 1157 | } |
| 1158 | } |
| 1159 | |
| 1160 | /* consume all events for this or earlier times. Be careful to |
| 1161 | allow an event to appear/disappear under our feet */ |
| 1162 | while (events->queue->time_of_event < |
| 1163 | (event_time + events->nr_ticks_to_process)) |
| 1164 | { |
| 1165 | sim_event *to_do = events->queue; |
| 1166 | sim_event_handler *handler = to_do->handler; |
| 1167 | void *data = to_do->data; |
| 1168 | events->queue = to_do->next; |
| 1169 | update_time_from_event (sd); |
| 1170 | ETRACE ((_ETRACE, |
| 1171 | "event issued at %ld - tag 0x%lx - handler 0x%lx, data 0x%lx%s%s\n", |
| 1172 | (long) event_time, |
| 1173 | (long) to_do, |
| 1174 | (long) handler, |
| 1175 | (long) data, |
| 1176 | (to_do->trace != NULL) ? ", " : "", |
| 1177 | (to_do->trace != NULL) ? to_do->trace : "")); |
| 1178 | sim_events_free (sd, to_do); |
| 1179 | handler (sd, data); |
| 1180 | } |
| 1181 | |
| 1182 | /* put things back where they belong ready for the next iteration */ |
| 1183 | events->watchpoints = events->watchedpoints; |
| 1184 | events->watchedpoints = NULL; |
| 1185 | if (events->watchpoints != NULL) |
| 1186 | events->work_pending = 1; |
| 1187 | |
| 1188 | /* advance the time */ |
| 1189 | SIM_ASSERT (events->time_from_event >= events->nr_ticks_to_process); |
| 1190 | SIM_ASSERT (events->queue != NULL); /* always poll event */ |
| 1191 | events->time_from_event -= events->nr_ticks_to_process; |
| 1192 | |
| 1193 | /* this round of processing complete */ |
| 1194 | events->nr_ticks_to_process = 0; |
| 1195 | } |
| 1196 | |
| 1197 | #endif |