| 1 | /* file ada-tasks.c: Ada tasking control for GDB |
| 2 | Copyright 1997 Free Software Foundation, Inc. |
| 3 | Contributed by Ada Core Technologies, Inc |
| 4 | . |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | [$Id$] |
| 8 | Authors: Roch-Alexandre Nomine Beguin, Arnaud Charlet <charlet@gnat.com> |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 2 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | */ |
| 16 | |
| 17 | #include <ctype.h> |
| 18 | #include "defs.h" |
| 19 | #include "command.h" |
| 20 | #include "value.h" |
| 21 | #include "language.h" |
| 22 | #include "inferior.h" |
| 23 | #include "symtab.h" |
| 24 | #include "target.h" |
| 25 | #include "regcache.h" |
| 26 | #include "gdbcore.h" |
| 27 | |
| 28 | #if (defined(__alpha__) && defined(__osf__) && !defined(__alpha_vxworks)) |
| 29 | #include <sys/procfs.h> |
| 30 | #endif |
| 31 | |
| 32 | #if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) |
| 33 | #include "gregset.h" |
| 34 | #endif |
| 35 | |
| 36 | #include "ada-lang.h" |
| 37 | |
| 38 | /* FIXME: move all this conditional compilation in description |
| 39 | files or in configure.in */ |
| 40 | |
| 41 | #if defined (VXWORKS_TARGET) |
| 42 | #define THREAD_TO_PID(tid,lwpid) (tid) |
| 43 | |
| 44 | #elif defined (linux) |
| 45 | #define THREAD_TO_PID(tid,lwpid) (0) |
| 46 | |
| 47 | #elif (defined (sun) && defined (__SVR4)) |
| 48 | #define THREAD_TO_PID thread_to_pid |
| 49 | |
| 50 | #elif defined (sgi) || defined (__WIN32__) || defined (hpux) |
| 51 | #define THREAD_TO_PID(tid,lwpid) ((int)lwpid) |
| 52 | |
| 53 | #else |
| 54 | #define THREAD_TO_PID(tid,lwpid) (0) |
| 55 | #endif |
| 56 | |
| 57 | #if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) |
| 58 | #define THREAD_FETCH_REGISTERS dec_thread_fetch_registers |
| 59 | #define GET_CURRENT_THREAD dec_thread_get_current_thread |
| 60 | extern int dec_thread_get_registers (gdb_gregset_t *, gdb_fpregset_t *); |
| 61 | #endif |
| 62 | |
| 63 | #if defined (_AIX) |
| 64 | #define THREAD_FETCH_REGISTERS aix_thread_fetch_registers |
| 65 | #define GET_CURRENT_THREAD aix_thread_get_current_thread |
| 66 | #endif |
| 67 | |
| 68 | #if defined(VXWORKS_TARGET) |
| 69 | #define GET_CURRENT_THREAD() ((void*)inferior_pid) |
| 70 | #define THREAD_FETCH_REGISTERS() (-1) |
| 71 | |
| 72 | #elif defined (sun) && defined (__SVR4) |
| 73 | #define GET_CURRENT_THREAD solaris_thread_get_current_thread |
| 74 | #define THREAD_FETCH_REGISTERS() (-1) |
| 75 | extern void *GET_CURRENT_THREAD (); |
| 76 | |
| 77 | #elif defined (_AIX) || (defined(__alpha__) && defined(__osf__)) |
| 78 | extern void *GET_CURRENT_THREAD (); |
| 79 | |
| 80 | #elif defined (__WIN32__) || defined (hpux) |
| 81 | #define GET_CURRENT_THREAD() (inferior_pid) |
| 82 | #define THREAD_FETCH_REGISTERS() (-1) |
| 83 | |
| 84 | #else |
| 85 | #define GET_CURRENT_THREAD() (NULL) |
| 86 | #define THREAD_FETCH_REGISTERS() (-1) |
| 87 | #endif |
| 88 | |
| 89 | #define KNOWN_TASKS_NAME "system__tasking__debug__known_tasks" |
| 90 | |
| 91 | #define READ_MEMORY(addr, var) read_memory (addr, (char*) &var, sizeof (var)) |
| 92 | /* external declarations */ |
| 93 | |
| 94 | /* Global visible variables */ |
| 95 | |
| 96 | struct task_entry *task_list = NULL; |
| 97 | int ada__tasks_check_symbol_table = 1; |
| 98 | void *pthread_kern_addr = NULL; |
| 99 | |
| 100 | #if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) |
| 101 | gdb_gregset_t gregset_saved; |
| 102 | gdb_fpregset_t fpregset_saved; |
| 103 | #endif |
| 104 | |
| 105 | /* The maximum number of tasks known to the Ada runtime */ |
| 106 | const int MAX_NUMBER_OF_KNOWN_TASKS = 1000; |
| 107 | |
| 108 | /* the current task */ |
| 109 | int current_task = -1, current_task_id = -1, current_task_index; |
| 110 | void *current_thread, *current_lwp; |
| 111 | |
| 112 | char *ada_task_states[] = { |
| 113 | "Unactivated", |
| 114 | "Runnable", |
| 115 | "Terminated", |
| 116 | "Child Activation Wait", |
| 117 | "Accept Statement", |
| 118 | "Waiting on entry call", |
| 119 | "Async Select Wait", |
| 120 | "Delay Sleep", |
| 121 | "Child Termination Wait", |
| 122 | "Wait Child in Term Alt", |
| 123 | "", |
| 124 | "", |
| 125 | "", |
| 126 | "", |
| 127 | "Asynchronous Hold" |
| 128 | }; |
| 129 | |
| 130 | /* Global internal types */ |
| 131 | |
| 132 | static char *ada_long_task_states[] = { |
| 133 | "Unactivated", |
| 134 | "Runnable", |
| 135 | "Terminated", |
| 136 | "Waiting for child activation", |
| 137 | "Blocked in accept statement", |
| 138 | "Waiting on entry call", |
| 139 | "Asynchronous Selective Wait", |
| 140 | "Delay Sleep", |
| 141 | "Waiting for children termination", |
| 142 | "Waiting for children in terminate alternative", |
| 143 | "", |
| 144 | "", |
| 145 | "", |
| 146 | "", |
| 147 | "Asynchronous Hold" |
| 148 | }; |
| 149 | |
| 150 | /* Global internal variables */ |
| 151 | |
| 152 | static int highest_task_num = 0; |
| 153 | int thread_support = 0; /* 1 if the thread library in use is supported */ |
| 154 | static int gdbtk_task_initialization = 0; |
| 155 | |
| 156 | static int |
| 157 | add_task_entry (void *p_task_id, int index) |
| 158 | { |
| 159 | struct task_entry *new_task_entry = NULL; |
| 160 | struct task_entry *pt; |
| 161 | |
| 162 | highest_task_num++; |
| 163 | new_task_entry = xmalloc (sizeof (struct task_entry)); |
| 164 | new_task_entry->task_num = highest_task_num; |
| 165 | new_task_entry->task_id = p_task_id; |
| 166 | new_task_entry->known_tasks_index = index; |
| 167 | new_task_entry->next_task = NULL; |
| 168 | pt = task_list; |
| 169 | if (pt) |
| 170 | { |
| 171 | while (pt->next_task) |
| 172 | pt = pt->next_task; |
| 173 | pt->next_task = new_task_entry; |
| 174 | pt->stack_per = 0; |
| 175 | } |
| 176 | else |
| 177 | task_list = new_task_entry; |
| 178 | return new_task_entry->task_num; |
| 179 | } |
| 180 | |
| 181 | int |
| 182 | get_entry_number (void *p_task_id) |
| 183 | { |
| 184 | struct task_entry *pt; |
| 185 | |
| 186 | pt = task_list; |
| 187 | while (pt != NULL) |
| 188 | { |
| 189 | if (pt->task_id == p_task_id) |
| 190 | return pt->task_num; |
| 191 | pt = pt->next_task; |
| 192 | } |
| 193 | return 0; |
| 194 | } |
| 195 | |
| 196 | static struct task_entry * |
| 197 | get_thread_entry_vptr (void *thread) |
| 198 | { |
| 199 | struct task_entry *pt; |
| 200 | |
| 201 | pt = task_list; |
| 202 | while (pt != NULL) |
| 203 | { |
| 204 | if (pt->thread == thread) |
| 205 | return pt; |
| 206 | pt = pt->next_task; |
| 207 | } |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | static struct task_entry * |
| 212 | get_entry_vptr (int p_task_num) |
| 213 | { |
| 214 | struct task_entry *pt; |
| 215 | |
| 216 | pt = task_list; |
| 217 | while (pt) |
| 218 | { |
| 219 | if (pt->task_num == p_task_num) |
| 220 | return pt; |
| 221 | pt = pt->next_task; |
| 222 | } |
| 223 | return NULL; |
| 224 | } |
| 225 | |
| 226 | void |
| 227 | init_task_list (void) |
| 228 | { |
| 229 | struct task_entry *pt, *old_pt; |
| 230 | |
| 231 | pt = task_list; |
| 232 | while (pt) |
| 233 | { |
| 234 | old_pt = pt; |
| 235 | pt = pt->next_task; |
| 236 | xfree (old_pt); |
| 237 | }; |
| 238 | task_list = NULL; |
| 239 | highest_task_num = 0; |
| 240 | } |
| 241 | |
| 242 | int |
| 243 | valid_task_id (int task) |
| 244 | { |
| 245 | return get_entry_vptr (task) != NULL; |
| 246 | } |
| 247 | |
| 248 | void * |
| 249 | get_self_id (void) |
| 250 | { |
| 251 | struct value *val; |
| 252 | void *self_id; |
| 253 | int result; |
| 254 | struct task_entry *ent; |
| 255 | extern int do_not_insert_breakpoints; |
| 256 | |
| 257 | #if !((defined(sun) && defined(__SVR4)) || defined(VXWORKS_TARGET) || defined(__WIN32__)) |
| 258 | if (thread_support) |
| 259 | #endif |
| 260 | { |
| 261 | ent = get_thread_entry_vptr (GET_CURRENT_THREAD ()); |
| 262 | return ent ? ent->task_id : 0; |
| 263 | } |
| 264 | |
| 265 | /* FIXME: calling a function in the inferior with a multithreaded application |
| 266 | is not reliable, so return NULL if there is no safe way to get the current |
| 267 | task */ |
| 268 | return NULL; |
| 269 | } |
| 270 | |
| 271 | int |
| 272 | get_current_task (void) |
| 273 | { |
| 274 | int result; |
| 275 | |
| 276 | /* FIXME: language_ada should be defined in defs.h */ |
| 277 | /* if (current_language->la_language != language_ada) return -1; */ |
| 278 | |
| 279 | result = get_entry_number (get_self_id ()); |
| 280 | |
| 281 | /* return -1 if not found */ |
| 282 | return result == 0 ? -1 : result; |
| 283 | } |
| 284 | |
| 285 | /* Print detailed information about specified task */ |
| 286 | |
| 287 | static void |
| 288 | info_task (char *arg, int from_tty) |
| 289 | { |
| 290 | void *temp_task; |
| 291 | struct task_entry *pt, *pt2; |
| 292 | void *self_id, *caller; |
| 293 | struct task_fields atcb, atcb2; |
| 294 | struct entry_call call; |
| 295 | int bounds[2]; |
| 296 | char image[256]; |
| 297 | int num; |
| 298 | |
| 299 | /* FIXME: language_ada should be defined in defs.h */ |
| 300 | /* if (current_language->la_language != language_ada) |
| 301 | { |
| 302 | printf_filtered ("The current language does not support tasks.\n"); |
| 303 | return; |
| 304 | } |
| 305 | */ |
| 306 | pt = get_entry_vptr (atoi (arg)); |
| 307 | if (pt == NULL) |
| 308 | { |
| 309 | printf_filtered ("Task %s not found.\n", arg); |
| 310 | return; |
| 311 | } |
| 312 | |
| 313 | temp_task = pt->task_id; |
| 314 | |
| 315 | /* read the atcb in the inferior */ |
| 316 | READ_MEMORY ((CORE_ADDR) temp_task, atcb); |
| 317 | |
| 318 | /* print the Ada task id */ |
| 319 | printf_filtered ("Ada Task: %p\n", temp_task); |
| 320 | |
| 321 | /* print the name of the task */ |
| 322 | if (atcb.image.P_ARRAY != NULL) |
| 323 | { |
| 324 | READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_BOUNDS), bounds); |
| 325 | bounds[1] = EXTRACT_INT (bounds[1]); |
| 326 | read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_ARRAY), |
| 327 | (char *) &image, bounds[1]); |
| 328 | printf_filtered ("Name: %.*s\n", bounds[1], image); |
| 329 | } |
| 330 | else |
| 331 | printf_filtered ("<no name>\n"); |
| 332 | |
| 333 | /* print the thread id */ |
| 334 | |
| 335 | if ((long) pt->thread < 65536) |
| 336 | printf_filtered ("Thread: %ld\n", (long int) pt->thread); |
| 337 | else |
| 338 | printf_filtered ("Thread: %p\n", pt->thread); |
| 339 | |
| 340 | if ((long) pt->lwp != 0) |
| 341 | { |
| 342 | if ((long) pt->lwp < 65536) |
| 343 | printf_filtered ("LWP: %ld\n", (long int) pt->lwp); |
| 344 | else |
| 345 | printf_filtered ("LWP: %p\n", pt->lwp); |
| 346 | } |
| 347 | |
| 348 | /* print the parent gdb task id */ |
| 349 | num = get_entry_number (EXTRACT_ADDRESS (atcb.parent)); |
| 350 | if (num != 0) |
| 351 | { |
| 352 | printf_filtered ("Parent: %d", num); |
| 353 | pt2 = get_entry_vptr (num); |
| 354 | READ_MEMORY ((CORE_ADDR) pt2->task_id, atcb2); |
| 355 | |
| 356 | /* print the name of the task */ |
| 357 | if (atcb2.image.P_ARRAY != NULL) |
| 358 | { |
| 359 | READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_BOUNDS), |
| 360 | bounds); |
| 361 | bounds[1] = EXTRACT_INT (bounds[1]); |
| 362 | read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_ARRAY), |
| 363 | (char *) &image, bounds[1]); |
| 364 | printf_filtered (" (%.*s)\n", bounds[1], image); |
| 365 | } |
| 366 | else |
| 367 | printf_filtered ("\n"); |
| 368 | } |
| 369 | else |
| 370 | printf_filtered ("No parent\n"); |
| 371 | |
| 372 | /* print the base priority of the task */ |
| 373 | printf_filtered ("Base Priority: %d\n", EXTRACT_INT (atcb.priority)); |
| 374 | |
| 375 | /* print the current state of the task */ |
| 376 | |
| 377 | /* check if this task is accepting a rendezvous */ |
| 378 | if (atcb.call == NULL) |
| 379 | caller = NULL; |
| 380 | else |
| 381 | { |
| 382 | READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.call), call); |
| 383 | caller = EXTRACT_ADDRESS (call.self); |
| 384 | } |
| 385 | |
| 386 | if (caller != NULL) |
| 387 | { |
| 388 | num = get_entry_number (caller); |
| 389 | printf_filtered ("Accepting rendezvous with %d", num); |
| 390 | |
| 391 | if (num != 0) |
| 392 | { |
| 393 | pt2 = get_entry_vptr (num); |
| 394 | READ_MEMORY ((CORE_ADDR) pt2->task_id, atcb2); |
| 395 | |
| 396 | /* print the name of the task */ |
| 397 | if (atcb2.image.P_ARRAY != NULL) |
| 398 | { |
| 399 | READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_BOUNDS), |
| 400 | bounds); |
| 401 | bounds[1] = EXTRACT_INT (bounds[1]); |
| 402 | read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_ARRAY), |
| 403 | (char *) &image, bounds[1]); |
| 404 | printf_filtered (" (%.*s)\n", bounds[1], image); |
| 405 | } |
| 406 | else |
| 407 | printf_filtered ("\n"); |
| 408 | } |
| 409 | else |
| 410 | printf_filtered ("\n"); |
| 411 | } |
| 412 | else |
| 413 | printf_filtered ("State: %s\n", ada_long_task_states[atcb.state]); |
| 414 | } |
| 415 | |
| 416 | #if 0 |
| 417 | |
| 418 | /* A useful function that shows the alignment of all the fields in the |
| 419 | tasks_fields structure |
| 420 | */ |
| 421 | |
| 422 | print_align (void) |
| 423 | { |
| 424 | struct task_fields tf; |
| 425 | void *tf_base = &(tf); |
| 426 | void *tf_state = &(tf.state); |
| 427 | void *tf_entry_num = &(tf.entry_num); |
| 428 | void *tf_parent = &(tf.parent); |
| 429 | void *tf_priority = &(tf.priority); |
| 430 | void *tf_current_priority = &(tf.current_priority); |
| 431 | void *tf_image = &(tf.image); |
| 432 | void *tf_call = &(tf.call); |
| 433 | void *tf_thread = &(tf.thread); |
| 434 | void *tf_lwp = &(tf.lwp); |
| 435 | printf_filtered ("\n"); |
| 436 | printf_filtered ("(tf_base = 0x%x)\n", tf_base); |
| 437 | printf_filtered ("task_fields.entry_num at %3d (0x%x)\n", |
| 438 | tf_entry_num - tf_base, tf_entry_num); |
| 439 | printf_filtered ("task_fields.state at %3d (0x%x)\n", |
| 440 | tf_state - tf_base, tf_state); |
| 441 | printf_filtered ("task_fields.parent at %3d (0x%x)\n", |
| 442 | tf_parent - tf_base, tf_parent); |
| 443 | printf_filtered ("task_fields.priority at %3d (0x%x)\n", |
| 444 | tf_priority - tf_base, tf_priority); |
| 445 | printf_filtered ("task_fields.current_priority at %3d (0x%x)\n", |
| 446 | tf_current_priority - tf_base, tf_current_priority); |
| 447 | printf_filtered ("task_fields.image at %3d (0x%x)\n", |
| 448 | tf_image - tf_base, tf_image); |
| 449 | printf_filtered ("task_fields.call at %3d (0x%x)\n", |
| 450 | tf_call - tf_base, tf_call); |
| 451 | printf_filtered ("task_fields.thread at %3d (0x%x)\n", |
| 452 | tf_thread - tf_base, tf_thread); |
| 453 | printf_filtered ("task_fields.lwp at %3d (0x%x)\n", |
| 454 | tf_lwp - tf_base, tf_lwp); |
| 455 | printf_filtered ("\n"); |
| 456 | } |
| 457 | #endif |
| 458 | |
| 459 | /* Print information about currently known tasks */ |
| 460 | |
| 461 | static void |
| 462 | info_tasks (char *arg, int from_tty) |
| 463 | { |
| 464 | struct value *val; |
| 465 | int i, task_number, state; |
| 466 | void *temp_task, *temp_tasks[MAX_NUMBER_OF_KNOWN_TASKS]; |
| 467 | struct task_entry *pt; |
| 468 | void *self_id, *caller, *thread_id = NULL; |
| 469 | struct task_fields atcb; |
| 470 | struct entry_call call; |
| 471 | int bounds[2]; |
| 472 | char image[256]; |
| 473 | int size; |
| 474 | char car; |
| 475 | |
| 476 | #if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) |
| 477 | pthreadTeb_t thr; |
| 478 | gdb_gregset_t regs; |
| 479 | #endif |
| 480 | |
| 481 | static struct symbol *sym; |
| 482 | static struct minimal_symbol *msym; |
| 483 | static void *known_tasks_addr = NULL; |
| 484 | |
| 485 | int init_only = gdbtk_task_initialization; |
| 486 | gdbtk_task_initialization = 0; |
| 487 | |
| 488 | task_number = 0; |
| 489 | |
| 490 | if (PIDGET (inferior_ptid) == 0) |
| 491 | { |
| 492 | printf_filtered ("The program is not being run under gdb. "); |
| 493 | printf_filtered ("Use 'run' or 'attach' first.\n"); |
| 494 | return; |
| 495 | } |
| 496 | |
| 497 | if (ada__tasks_check_symbol_table) |
| 498 | { |
| 499 | thread_support = 0; |
| 500 | #if (defined(__alpha__) && defined(__osf__) & !defined(VXWORKS_TARGET)) || \ |
| 501 | defined (_AIX) |
| 502 | thread_support = 1; |
| 503 | #endif |
| 504 | |
| 505 | msym = lookup_minimal_symbol (KNOWN_TASKS_NAME, NULL, NULL); |
| 506 | if (msym != NULL) |
| 507 | known_tasks_addr = (void *) SYMBOL_VALUE_ADDRESS (msym); |
| 508 | else |
| 509 | #ifndef VXWORKS_TARGET |
| 510 | return; |
| 511 | #else |
| 512 | { |
| 513 | if (target_lookup_symbol (KNOWN_TASKS_NAME, &known_tasks_addr) != 0) |
| 514 | return; |
| 515 | } |
| 516 | #endif |
| 517 | |
| 518 | ada__tasks_check_symbol_table = 0; |
| 519 | } |
| 520 | |
| 521 | if (known_tasks_addr == NULL) |
| 522 | return; |
| 523 | |
| 524 | #if !((defined(sun) && defined(__SVR4)) || defined(VXWORKS_TARGET) || defined(__WIN32__) || defined (hpux)) |
| 525 | if (thread_support) |
| 526 | #endif |
| 527 | thread_id = GET_CURRENT_THREAD (); |
| 528 | |
| 529 | /* then we get a list of tasks created */ |
| 530 | |
| 531 | init_task_list (); |
| 532 | |
| 533 | READ_MEMORY ((CORE_ADDR) known_tasks_addr, temp_tasks); |
| 534 | |
| 535 | for (i = 0; i < MAX_NUMBER_OF_KNOWN_TASKS; i++) |
| 536 | { |
| 537 | temp_task = EXTRACT_ADDRESS (temp_tasks[i]); |
| 538 | |
| 539 | if (temp_task != NULL) |
| 540 | { |
| 541 | task_number = get_entry_number (temp_task); |
| 542 | if (task_number == 0) |
| 543 | task_number = add_task_entry (temp_task, i); |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | /* Return without printing anything if this function was called in |
| 548 | order to init GDBTK tasking. */ |
| 549 | |
| 550 | if (init_only) |
| 551 | return; |
| 552 | |
| 553 | /* print the header */ |
| 554 | |
| 555 | #if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) |
| 556 | printf_filtered |
| 557 | (" ID TID P-ID Pri Stack %% State Name\n"); |
| 558 | #else |
| 559 | printf_filtered (" ID TID P-ID Pri State Name\n"); |
| 560 | #endif |
| 561 | |
| 562 | /* Now that we have a list of task id's, we can print them */ |
| 563 | pt = task_list; |
| 564 | while (pt) |
| 565 | { |
| 566 | temp_task = pt->task_id; |
| 567 | |
| 568 | /* read the atcb in the inferior */ |
| 569 | READ_MEMORY ((CORE_ADDR) temp_task, atcb); |
| 570 | |
| 571 | /* store the thread id for future use */ |
| 572 | pt->thread = EXTRACT_ADDRESS (atcb.thread); |
| 573 | |
| 574 | #if defined (linux) |
| 575 | pt->lwp = (void *) THREAD_TO_PID (atcb.thread, 0); |
| 576 | #else |
| 577 | pt->lwp = EXTRACT_ADDRESS (atcb.lwp); |
| 578 | #endif |
| 579 | |
| 580 | /* print a star if this task is the current one */ |
| 581 | if (thread_id) |
| 582 | #if defined (__WIN32__) || defined (SGI) || defined (hpux) |
| 583 | printf_filtered (pt->lwp == thread_id ? "*" : " "); |
| 584 | #else |
| 585 | printf_filtered (pt->thread == thread_id ? "*" : " "); |
| 586 | #endif |
| 587 | |
| 588 | /* print the gdb task id */ |
| 589 | printf_filtered ("%3d", pt->task_num); |
| 590 | |
| 591 | /* print the Ada task id */ |
| 592 | #ifndef VXWORKS_TARGET |
| 593 | printf_filtered (" %9lx", (long) temp_task); |
| 594 | #else |
| 595 | #ifdef TARGET_64 |
| 596 | printf_filtered (" %#9lx", (unsigned long) pt->thread & 0x3ffffffffff); |
| 597 | #else |
| 598 | printf_filtered (" %#9lx", (long) pt->thread); |
| 599 | #endif |
| 600 | #endif |
| 601 | |
| 602 | /* print the parent gdb task id */ |
| 603 | printf_filtered |
| 604 | (" %4d", get_entry_number (EXTRACT_ADDRESS (atcb.parent))); |
| 605 | |
| 606 | /* print the base priority of the task */ |
| 607 | printf_filtered (" %3d", EXTRACT_INT (atcb.priority)); |
| 608 | |
| 609 | #if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) |
| 610 | if (pt->task_num == 1 || atcb.state == Terminated) |
| 611 | { |
| 612 | printf_filtered (" Unknown"); |
| 613 | goto next; |
| 614 | } |
| 615 | |
| 616 | read_memory ((CORE_ADDR) atcb.thread, &thr, sizeof (thr)); |
| 617 | current_thread = atcb.thread; |
| 618 | regs.regs[SP_REGNUM] = 0; |
| 619 | if (dec_thread_get_registers (®s, NULL) == 0) |
| 620 | { |
| 621 | pt->stack_per = (100 * ((long) thr.__stack_base - |
| 622 | regs.regs[SP_REGNUM])) / thr.__stack_size; |
| 623 | /* if the thread is terminated but still there, the |
| 624 | stack_base/size values are erroneous. Try to patch it */ |
| 625 | if (pt->stack_per < 0 || pt->stack_per > 100) |
| 626 | pt->stack_per = 0; |
| 627 | } |
| 628 | |
| 629 | /* print information about stack space used in the thread */ |
| 630 | if (thr.__stack_size < 1024 * 1024) |
| 631 | { |
| 632 | size = thr.__stack_size / 1024; |
| 633 | car = 'K'; |
| 634 | } |
| 635 | else if (thr.__stack_size < 1024 * 1024 * 1024) |
| 636 | { |
| 637 | size = thr.__stack_size / 1024 / 1024; |
| 638 | car = 'M'; |
| 639 | } |
| 640 | else /* Who knows... */ |
| 641 | { |
| 642 | size = thr.__stack_size / 1024 / 1024 / 1024; |
| 643 | car = 'G'; |
| 644 | } |
| 645 | printf_filtered (" %4d%c %2d", size, car, pt->stack_per); |
| 646 | next: |
| 647 | #endif |
| 648 | |
| 649 | /* print the current state of the task */ |
| 650 | |
| 651 | /* check if this task is accepting a rendezvous */ |
| 652 | if (atcb.call == NULL) |
| 653 | caller = NULL; |
| 654 | else |
| 655 | { |
| 656 | READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.call), call); |
| 657 | caller = EXTRACT_ADDRESS (call.self); |
| 658 | } |
| 659 | |
| 660 | if (caller != NULL) |
| 661 | printf_filtered (" Accepting RV with %-4d", |
| 662 | get_entry_number (caller)); |
| 663 | else |
| 664 | { |
| 665 | state = atcb.state; |
| 666 | #if defined (__WIN32__) || defined (SGI) || defined (hpux) |
| 667 | if (state == Runnable && (thread_id && pt->lwp == thread_id)) |
| 668 | #else |
| 669 | if (state == Runnable && (thread_id && pt->thread == thread_id)) |
| 670 | #endif |
| 671 | /* Replace "Runnable" by "Running" if this is the current task */ |
| 672 | printf_filtered (" %-22s", "Running"); |
| 673 | else |
| 674 | printf_filtered (" %-22s", ada_task_states[state]); |
| 675 | } |
| 676 | |
| 677 | /* finally, print the name of the task */ |
| 678 | if (atcb.image.P_ARRAY != NULL) |
| 679 | { |
| 680 | READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_BOUNDS), |
| 681 | bounds); |
| 682 | bounds[1] = EXTRACT_INT (bounds[1]); |
| 683 | read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_ARRAY), |
| 684 | (char *) &image, bounds[1]); |
| 685 | printf_filtered (" %.*s\n", bounds[1], image); |
| 686 | } |
| 687 | else |
| 688 | printf_filtered (" <no name>\n"); |
| 689 | |
| 690 | pt = pt->next_task; |
| 691 | } |
| 692 | } |
| 693 | |
| 694 | /* Task list initialization for GDB-Tk. We basically use info_tasks() |
| 695 | to initialize our variables, but abort that function before we |
| 696 | actually print anything. */ |
| 697 | |
| 698 | int |
| 699 | gdbtk_tcl_tasks_initialize (void) |
| 700 | { |
| 701 | gdbtk_task_initialization = 1; |
| 702 | info_tasks ("", gdb_stdout); |
| 703 | |
| 704 | return (task_list != NULL); |
| 705 | } |
| 706 | |
| 707 | static void |
| 708 | info_tasks_command (char *arg, int from_tty) |
| 709 | { |
| 710 | if (arg == NULL || *arg == '\000') |
| 711 | info_tasks (arg, from_tty); |
| 712 | else |
| 713 | info_task (arg, from_tty); |
| 714 | } |
| 715 | |
| 716 | /* Switch from one thread to another. */ |
| 717 | |
| 718 | static void |
| 719 | switch_to_thread (ptid_t ptid) |
| 720 | { |
| 721 | if (ptid_equal (ptid, inferior_ptid)) |
| 722 | return; |
| 723 | |
| 724 | inferior_ptid = ptid; |
| 725 | flush_cached_frames (); |
| 726 | registers_changed (); |
| 727 | stop_pc = read_pc (); |
| 728 | select_frame (get_current_frame ()); |
| 729 | } |
| 730 | |
| 731 | /* Switch to a specified task. */ |
| 732 | |
| 733 | static int |
| 734 | task_switch (void *tid, void *lwpid) |
| 735 | { |
| 736 | int res = 0, pid; |
| 737 | |
| 738 | if (thread_support) |
| 739 | { |
| 740 | flush_cached_frames (); |
| 741 | |
| 742 | if (current_task != current_task_id) |
| 743 | { |
| 744 | res = THREAD_FETCH_REGISTERS (); |
| 745 | } |
| 746 | else |
| 747 | { |
| 748 | #if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) |
| 749 | supply_gregset (&gregset_saved); |
| 750 | supply_fpregset (&fpregset_saved); |
| 751 | #endif |
| 752 | } |
| 753 | |
| 754 | if (res == 0) |
| 755 | stop_pc = read_pc (); |
| 756 | select_frame (get_current_frame ()); |
| 757 | return res; |
| 758 | } |
| 759 | |
| 760 | return -1; |
| 761 | } |
| 762 | |
| 763 | static void |
| 764 | task_command (char *tidstr, int from_tty) |
| 765 | { |
| 766 | int num; |
| 767 | struct task_entry *e; |
| 768 | |
| 769 | if (!tidstr) |
| 770 | error ("Please specify a task ID. Use the \"info tasks\" command to\n" |
| 771 | "see the IDs of currently known tasks."); |
| 772 | |
| 773 | num = atoi (tidstr); |
| 774 | e = get_entry_vptr (num); |
| 775 | |
| 776 | if (e == NULL) |
| 777 | error ("Task ID %d not known. Use the \"info tasks\" command to\n" |
| 778 | "see the IDs of currently known tasks.", num); |
| 779 | |
| 780 | if (current_task_id == -1) |
| 781 | { |
| 782 | #if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) |
| 783 | fill_gregset (&gregset_saved, -1); |
| 784 | fill_fpregset (&fpregset_saved, -1); |
| 785 | #endif |
| 786 | current_task_id = get_current_task (); |
| 787 | } |
| 788 | |
| 789 | current_task = num; |
| 790 | current_task_index = e->known_tasks_index; |
| 791 | current_thread = e->thread; |
| 792 | current_lwp = e->lwp; |
| 793 | if (task_switch (e->thread, e->lwp) == 0) |
| 794 | { |
| 795 | /* FIXME: find_printable_frame should be defined in frame.h, and |
| 796 | implemented in ada-lang.c */ |
| 797 | /* find_printable_frame (deprecated_selected_frame, frame_relative_level (deprecated_selected_frame)); */ |
| 798 | printf_filtered ("[Switching to task %d]\n", num); |
| 799 | print_stack_frame (deprecated_selected_frame, |
| 800 | frame_relative_level (deprecated_selected_frame), 1); |
| 801 | } |
| 802 | else |
| 803 | printf_filtered ("Unable to switch to task %d\n", num); |
| 804 | } |
| 805 | |
| 806 | void |
| 807 | _initialize_tasks (void) |
| 808 | { |
| 809 | static struct cmd_list_element *task_cmd_list = NULL; |
| 810 | extern struct cmd_list_element *cmdlist; |
| 811 | |
| 812 | add_info ("tasks", info_tasks_command, |
| 813 | "Without argument: list all known Ada tasks, with status information.\n" |
| 814 | "info tasks n: print detailed information of task n.\n"); |
| 815 | |
| 816 | add_prefix_cmd ("task", class_run, task_command, |
| 817 | "Use this command to switch between tasks.\n\ |
| 818 | The new task ID must be currently known.", &task_cmd_list, "task ", 1, &cmdlist); |
| 819 | } |