gdb/annotate.c

   1 /* Annotation routines for GDB.
   2    Copyright (C) 1986-2020 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include "defs.h"
  20 #include "annotate.h"
  21 #include "value.h"
  22 #include "target.h"
  23 #include "gdbtypes.h"
  24 #include "breakpoint.h"
  25 #include "observable.h"
  26 #include "inferior.h"
  27 #include "infrun.h"
  28 #include "top.h"
  29 #include "source.h"
  30 #include "objfiles.h"
  31 #include "source-cache.h"
  32 \f
  33
  34 /* Prototypes for local functions.  */
  35
  36 static void print_value_flags (struct type *);
  37
  38 static void breakpoint_changed (struct breakpoint *b);
  39
  40
  41 void (*deprecated_annotate_signalled_hook) (void);
  42 void (*deprecated_annotate_signal_hook) (void);
  43
  44 /* Booleans indicating whether we've emitted certain notifications.
  45    Used to suppress useless repeated notifications until the next time
  46    we're ready to accept more commands.  Reset whenever a prompt is
  47    displayed.  */
  48 static int frames_invalid_emitted;
  49 static int breakpoints_invalid_emitted;
  50
  51 static void
  52 print_value_flags (struct type *t)
  53 {
  54   if (can_dereference (t))
  55     printf_filtered (("*"));
  56   else
  57     printf_filtered (("-"));
  58 }
  59
  60 static void
  61 annotate_breakpoints_invalid (void)
  62 {
  63   if (annotation_level == 2
  64       && (!breakpoints_invalid_emitted
  65           || current_ui->prompt_state != PROMPT_BLOCKED))
  66     {
  67       target_terminal::scoped_restore_terminal_state term_state;
  68       target_terminal::ours_for_output ();
  69
  70       printf_unfiltered (("\n\032\032breakpoints-invalid\n"));
  71       breakpoints_invalid_emitted = 1;
  72     }
  73 }
  74
  75 void
  76 annotate_breakpoint (int num)
  77 {
  78   if (annotation_level > 1)
  79     printf_filtered (("\n\032\032breakpoint %d\n"), num);
  80 }
  81
  82 void
  83 annotate_catchpoint (int num)
  84 {
  85   if (annotation_level > 1)
  86     printf_filtered (("\n\032\032catchpoint %d\n"), num);
  87 }
  88
  89 void
  90 annotate_watchpoint (int num)
  91 {
  92   if (annotation_level > 1)
  93     printf_filtered (("\n\032\032watchpoint %d\n"), num);
  94 }
  95
  96 void
  97 annotate_starting (void)
  98 {
  99   if (annotation_level > 1)
 100     printf_filtered (("\n\032\032starting\n"));
 101 }
 102
 103 void
 104 annotate_stopped (void)
 105 {
 106   if (annotation_level > 1)
 107     printf_filtered (("\n\032\032stopped\n"));
 108 }
 109
 110 void
 111 annotate_exited (int exitstatus)
 112 {
 113   if (annotation_level > 1)
 114     printf_filtered (("\n\032\032exited %d\n"), exitstatus);
 115 }
 116
 117 void
 118 annotate_signalled (void)
 119 {
 120   if (deprecated_annotate_signalled_hook)
 121     deprecated_annotate_signalled_hook ();
 122
 123   if (annotation_level > 1)
 124     printf_filtered (("\n\032\032signalled\n"));
 125 }
 126
 127 void
 128 annotate_signal_name (void)
 129 {
 130   if (annotation_level == 2)
 131     printf_filtered (("\n\032\032signal-name\n"));
 132 }
 133
 134 void
 135 annotate_signal_name_end (void)
 136 {
 137   if (annotation_level == 2)
 138     printf_filtered (("\n\032\032signal-name-end\n"));
 139 }
 140
 141 void
 142 annotate_signal_string (void)
 143 {
 144   if (annotation_level == 2)
 145     printf_filtered (("\n\032\032signal-string\n"));
 146 }
 147
 148 void
 149 annotate_signal_string_end (void)
 150 {
 151   if (annotation_level == 2)
 152     printf_filtered (("\n\032\032signal-string-end\n"));
 153 }
 154
 155 void
 156 annotate_signal (void)
 157 {
 158   if (deprecated_annotate_signal_hook)
 159     deprecated_annotate_signal_hook ();
 160
 161   if (annotation_level > 1)
 162     printf_filtered (("\n\032\032signal\n"));
 163 }
 164 \f
 165 void
 166 annotate_breakpoints_headers (void)
 167 {
 168   if (annotation_level == 2)
 169     printf_filtered (("\n\032\032breakpoints-headers\n"));
 170 }
 171
 172 void
 173 annotate_field (int num)
 174 {
 175   if (annotation_level == 2)
 176     printf_filtered (("\n\032\032field %d\n"), num);
 177 }
 178
 179 void
 180 annotate_breakpoints_table (void)
 181 {
 182   if (annotation_level == 2)
 183     printf_filtered (("\n\032\032breakpoints-table\n"));
 184 }
 185
 186 void
 187 annotate_record (void)
 188 {
 189   if (annotation_level == 2)
 190     printf_filtered (("\n\032\032record\n"));
 191 }
 192
 193 void
 194 annotate_breakpoints_table_end (void)
 195 {
 196   if (annotation_level == 2)
 197     printf_filtered (("\n\032\032breakpoints-table-end\n"));
 198 }
 199
 200 void
 201 annotate_frames_invalid (void)
 202 {
 203   if (annotation_level == 2
 204       && (!frames_invalid_emitted
 205           || current_ui->prompt_state != PROMPT_BLOCKED))
 206     {
 207       target_terminal::scoped_restore_terminal_state term_state;
 208       target_terminal::ours_for_output ();
 209
 210       printf_unfiltered (("\n\032\032frames-invalid\n"));
 211       frames_invalid_emitted = 1;
 212     }
 213 }
 214
 215 void
 216 annotate_new_thread (void)
 217 {
 218   if (annotation_level > 1)
 219     {
 220       printf_unfiltered (("\n\032\032new-thread\n"));
 221     }
 222 }
 223
 224 void
 225 annotate_thread_changed (void)
 226 {
 227   if (annotation_level > 1)
 228     {
 229       printf_unfiltered (("\n\032\032thread-changed\n"));
 230     }
 231 }
 232
 233 /* Emit notification on thread exit.  */
 234
 235 static void
 236 annotate_thread_exited (struct thread_info *t, int silent)
 237 {
 238   if (annotation_level > 1)
 239     {
 240       printf_filtered(("\n\032\032thread-exited,"
 241                        "id=\"%d\",group-id=\"i%d\"\n"),
 242                       t->global_num, t->inf->num);
 243     }
 244 }
 245
 246 void
 247 annotate_field_begin (struct type *type)
 248 {
 249   if (annotation_level == 2)
 250     {
 251       printf_filtered (("\n\032\032field-begin "));
 252       print_value_flags (type);
 253       printf_filtered (("\n"));
 254     }
 255 }
 256
 257 void
 258 annotate_field_name_end (void)
 259 {
 260   if (annotation_level == 2)
 261     printf_filtered (("\n\032\032field-name-end\n"));
 262 }
 263
 264 void
 265 annotate_field_value (void)
 266 {
 267   if (annotation_level == 2)
 268     printf_filtered (("\n\032\032field-value\n"));
 269 }
 270
 271 void
 272 annotate_field_end (void)
 273 {
 274   if (annotation_level == 2)
 275     printf_filtered (("\n\032\032field-end\n"));
 276 }
 277 \f
 278 void
 279 annotate_quit (void)
 280 {
 281   if (annotation_level > 1)
 282     printf_filtered (("\n\032\032quit\n"));
 283 }
 284
 285 void
 286 annotate_error (void)
 287 {
 288   if (annotation_level > 1)
 289     printf_filtered (("\n\032\032error\n"));
 290 }
 291
 292 void
 293 annotate_error_begin (void)
 294 {
 295   if (annotation_level > 1)
 296     fprintf_filtered (gdb_stderr, "\n\032\032error-begin\n");
 297 }
 298
 299 void
 300 annotate_value_history_begin (int histindex, struct type *type)
 301 {
 302   if (annotation_level == 2)
 303     {
 304       printf_filtered (("\n\032\032value-history-begin %d "), histindex);
 305       print_value_flags (type);
 306       printf_filtered (("\n"));
 307     }
 308 }
 309
 310 void
 311 annotate_value_begin (struct type *type)
 312 {
 313   if (annotation_level == 2)
 314     {
 315       printf_filtered (("\n\032\032value-begin "));
 316       print_value_flags (type);
 317       printf_filtered (("\n"));
 318     }
 319 }
 320
 321 void
 322 annotate_value_history_value (void)
 323 {
 324   if (annotation_level == 2)
 325     printf_filtered (("\n\032\032value-history-value\n"));
 326 }
 327
 328 void
 329 annotate_value_history_end (void)
 330 {
 331   if (annotation_level == 2)
 332     printf_filtered (("\n\032\032value-history-end\n"));
 333 }
 334
 335 void
 336 annotate_value_end (void)
 337 {
 338   if (annotation_level == 2)
 339     printf_filtered (("\n\032\032value-end\n"));
 340 }
 341
 342 void
 343 annotate_display_begin (void)
 344 {
 345   if (annotation_level == 2)
 346     printf_filtered (("\n\032\032display-begin\n"));
 347 }
 348
 349 void
 350 annotate_display_number_end (void)
 351 {
 352   if (annotation_level == 2)
 353     printf_filtered (("\n\032\032display-number-end\n"));
 354 }
 355
 356 void
 357 annotate_display_format (void)
 358 {
 359   if (annotation_level == 2)
 360     printf_filtered (("\n\032\032display-format\n"));
 361 }
 362
 363 void
 364 annotate_display_expression (void)
 365 {
 366   if (annotation_level == 2)
 367     printf_filtered (("\n\032\032display-expression\n"));
 368 }
 369
 370 void
 371 annotate_display_expression_end (void)
 372 {
 373   if (annotation_level == 2)
 374     printf_filtered (("\n\032\032display-expression-end\n"));
 375 }
 376
 377 void
 378 annotate_display_value (void)
 379 {
 380   if (annotation_level == 2)
 381     printf_filtered (("\n\032\032display-value\n"));
 382 }
 383
 384 void
 385 annotate_display_end (void)
 386 {
 387   if (annotation_level == 2)
 388     printf_filtered (("\n\032\032display-end\n"));
 389 }
 390
 391 void
 392 annotate_arg_begin (void)
 393 {
 394   if (annotation_level == 2)
 395     printf_filtered (("\n\032\032arg-begin\n"));
 396 }
 397
 398 void
 399 annotate_arg_name_end (void)
 400 {
 401   if (annotation_level == 2)
 402     printf_filtered (("\n\032\032arg-name-end\n"));
 403 }
 404
 405 void
 406 annotate_arg_value (struct type *type)
 407 {
 408   if (annotation_level == 2)
 409     {
 410       printf_filtered (("\n\032\032arg-value "));
 411       print_value_flags (type);
 412       printf_filtered (("\n"));
 413     }
 414 }
 415
 416 void
 417 annotate_arg_end (void)
 418 {
 419   if (annotation_level == 2)
 420     printf_filtered (("\n\032\032arg-end\n"));
 421 }
 422
 423 static void
 424 annotate_source (const char *filename, int line, int character, int mid,
 425                  struct gdbarch *gdbarch, CORE_ADDR pc)
 426 {
 427   if (annotation_level > 1)
 428     printf_filtered (("\n\032\032source "));
 429   else
 430     printf_filtered (("\032\032"));
 431
 432   printf_filtered (("%s:%d:%d:%s:%s\n"), filename, line, character,
 433                    mid ? "middle" : "beg", paddress (gdbarch, pc));
 434 }
 435
 436 /* See annotate.h.  */
 437
 438 bool
 439 annotate_source_line (struct symtab *s, int line, int mid_statement,
 440                       CORE_ADDR pc)
 441 {
 442   if (annotation_level > 0)
 443     {
 444       const std::vector<off_t> *offsets;
 445       if (!g_source_cache.get_line_charpos (s, &offsets))
 446         return false;
 447       if (line > offsets->size ())
 448         return false;
 449
 450       annotate_source (s->fullname, line, (int) (*offsets)[line - 1],
 451                        mid_statement, SYMTAB_OBJFILE (s)->arch (),
 452                        pc);
 453
 454       /* Update the current symtab and line.  */
 455       symtab_and_line sal;
 456       sal.pspace = SYMTAB_PSPACE (s);
 457       sal.symtab = s;
 458       sal.line = line;
 459       set_current_source_symtab_and_line (sal);
 460
 461       return true;
 462     }
 463
 464   return false;
 465 }
 466
 467
 468 void
 469 annotate_frame_begin (int level, struct gdbarch *gdbarch, CORE_ADDR pc)
 470 {
 471   if (annotation_level > 1)
 472     printf_filtered (("\n\032\032frame-begin %d %s\n"),
 473                      level, paddress (gdbarch, pc));
 474 }
 475
 476 void
 477 annotate_function_call (void)
 478 {
 479   if (annotation_level == 2)
 480     printf_filtered (("\n\032\032function-call\n"));
 481 }
 482
 483 void
 484 annotate_signal_handler_caller (void)
 485 {
 486   if (annotation_level == 2)
 487     printf_filtered (("\n\032\032signal-handler-caller\n"));
 488 }
 489
 490 void
 491 annotate_frame_address (void)
 492 {
 493   if (annotation_level == 2)
 494     printf_filtered (("\n\032\032frame-address\n"));
 495 }
 496
 497 void
 498 annotate_frame_address_end (void)
 499 {
 500   if (annotation_level == 2)
 501     printf_filtered (("\n\032\032frame-address-end\n"));
 502 }
 503
 504 void
 505 annotate_frame_function_name (void)
 506 {
 507   if (annotation_level == 2)
 508     printf_filtered (("\n\032\032frame-function-name\n"));
 509 }
 510
 511 void
 512 annotate_frame_args (void)
 513 {
 514   if (annotation_level == 2)
 515     printf_filtered (("\n\032\032frame-args\n"));
 516 }
 517
 518 void
 519 annotate_frame_source_begin (void)
 520 {
 521   if (annotation_level == 2)
 522     printf_filtered (("\n\032\032frame-source-begin\n"));
 523 }
 524
 525 void
 526 annotate_frame_source_file (void)
 527 {
 528   if (annotation_level == 2)
 529     printf_filtered (("\n\032\032frame-source-file\n"));
 530 }
 531
 532 void
 533 annotate_frame_source_file_end (void)
 534 {
 535   if (annotation_level == 2)
 536     printf_filtered (("\n\032\032frame-source-file-end\n"));
 537 }
 538
 539 void
 540 annotate_frame_source_line (void)
 541 {
 542   if (annotation_level == 2)
 543     printf_filtered (("\n\032\032frame-source-line\n"));
 544 }
 545
 546 void
 547 annotate_frame_source_end (void)
 548 {
 549   if (annotation_level == 2)
 550     printf_filtered (("\n\032\032frame-source-end\n"));
 551 }
 552
 553 void
 554 annotate_frame_where (void)
 555 {
 556   if (annotation_level == 2)
 557     printf_filtered (("\n\032\032frame-where\n"));
 558 }
 559
 560 void
 561 annotate_frame_end (void)
 562 {
 563   if (annotation_level == 2)
 564     printf_filtered (("\n\032\032frame-end\n"));
 565 }
 566 \f
 567 void
 568 annotate_array_section_begin (int idx, struct type *elttype)
 569 {
 570   if (annotation_level == 2)
 571     {
 572       printf_filtered (("\n\032\032array-section-begin %d "), idx);
 573       print_value_flags (elttype);
 574       printf_filtered (("\n"));
 575     }
 576 }
 577
 578 void
 579 annotate_elt_rep (unsigned int repcount)
 580 {
 581   if (annotation_level == 2)
 582     printf_filtered (("\n\032\032elt-rep %u\n"), repcount);
 583 }
 584
 585 void
 586 annotate_elt_rep_end (void)
 587 {
 588   if (annotation_level == 2)
 589     printf_filtered (("\n\032\032elt-rep-end\n"));
 590 }
 591
 592 void
 593 annotate_elt (void)
 594 {
 595   if (annotation_level == 2)
 596     printf_filtered (("\n\032\032elt\n"));
 597 }
 598
 599 void
 600 annotate_array_section_end (void)
 601 {
 602   if (annotation_level == 2)
 603     printf_filtered (("\n\032\032array-section-end\n"));
 604 }
 605
 606 /* Called when GDB is about to display the prompt.  Used to reset
 607    annotation suppression whenever we're ready to accept new
 608    frontend/user commands.  */
 609
 610 void
 611 annotate_display_prompt (void)
 612 {
 613   frames_invalid_emitted = 0;
 614   breakpoints_invalid_emitted = 0;
 615 }
 616
 617 static void
 618 breakpoint_changed (struct breakpoint *b)
 619 {
 620   if (b->number <= 0)
 621     return;
 622
 623   annotate_breakpoints_invalid ();
 624 }
 625
 626 void _initialize_annotate ();
 627 void
 628 _initialize_annotate ()
 629 {
 630   gdb::observers::breakpoint_created.attach (breakpoint_changed);
 631   gdb::observers::breakpoint_deleted.attach (breakpoint_changed);
 632   gdb::observers::breakpoint_modified.attach (breakpoint_changed);
 633   gdb::observers::thread_exit.attach (annotate_thread_exited);
 634 }