| 1 | /* Skipping uninteresting files and functions while stepping. |
| 2 | |
| 3 | Copyright (C) 2011-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include "defs.h" |
| 19 | #include "skip.h" |
| 20 | #include "value.h" |
| 21 | #include "valprint.h" |
| 22 | #include "ui-out.h" |
| 23 | #include "symtab.h" |
| 24 | #include "gdbcmd.h" |
| 25 | #include "command.h" |
| 26 | #include "completer.h" |
| 27 | #include "stack.h" |
| 28 | #include "cli/cli-utils.h" |
| 29 | #include "arch-utils.h" |
| 30 | #include "linespec.h" |
| 31 | #include "objfiles.h" |
| 32 | #include "breakpoint.h" /* for get_sal_arch () */ |
| 33 | #include "source.h" |
| 34 | #include "filenames.h" |
| 35 | #include "fnmatch.h" |
| 36 | #include "gdb_regex.h" |
| 37 | |
| 38 | struct skiplist_entry |
| 39 | { |
| 40 | int number; |
| 41 | |
| 42 | /* Non-zero if FILE is a glob-style pattern. |
| 43 | Otherewise it is the plain file name (possibly with directories). */ |
| 44 | int file_is_glob; |
| 45 | |
| 46 | /* The name of the file or NULL. |
| 47 | The skiplist entry owns this pointer. */ |
| 48 | char *file; |
| 49 | |
| 50 | /* Non-zero if FUNCTION is a regexp. |
| 51 | Otherwise it is a plain function name (possibly with arguments, |
| 52 | for C++). */ |
| 53 | int function_is_regexp; |
| 54 | |
| 55 | /* The name of the function or NULL. |
| 56 | The skiplist entry owns this pointer. */ |
| 57 | char *function; |
| 58 | |
| 59 | /* If this is a function regexp, the compiled form. */ |
| 60 | regex_t compiled_function_regexp; |
| 61 | |
| 62 | /* Non-zero if the function regexp has been compiled. */ |
| 63 | int compiled_function_regexp_is_valid; |
| 64 | |
| 65 | int enabled; |
| 66 | |
| 67 | struct skiplist_entry *next; |
| 68 | }; |
| 69 | |
| 70 | static void add_skiplist_entry (struct skiplist_entry *e); |
| 71 | |
| 72 | static struct skiplist_entry *skiplist_entry_chain; |
| 73 | static int skiplist_entry_count; |
| 74 | |
| 75 | #define ALL_SKIPLIST_ENTRIES(E) \ |
| 76 | for (E = skiplist_entry_chain; E; E = E->next) |
| 77 | |
| 78 | #define ALL_SKIPLIST_ENTRIES_SAFE(E,TMP) \ |
| 79 | for (E = skiplist_entry_chain; \ |
| 80 | E ? (TMP = E->next, 1) : 0; \ |
| 81 | E = TMP) |
| 82 | |
| 83 | /* Create a skip object. */ |
| 84 | |
| 85 | static struct skiplist_entry * |
| 86 | make_skip_entry (int file_is_glob, const char *file, |
| 87 | int function_is_regexp, const char *function) |
| 88 | { |
| 89 | struct skiplist_entry *e = XCNEW (struct skiplist_entry); |
| 90 | |
| 91 | gdb_assert (file != NULL || function != NULL); |
| 92 | if (file_is_glob) |
| 93 | gdb_assert (file != NULL); |
| 94 | if (function_is_regexp) |
| 95 | gdb_assert (function != NULL); |
| 96 | |
| 97 | if (file != NULL) |
| 98 | e->file = xstrdup (file); |
| 99 | if (function != NULL) |
| 100 | e->function = xstrdup (function); |
| 101 | e->file_is_glob = file_is_glob; |
| 102 | e->function_is_regexp = function_is_regexp; |
| 103 | e->enabled = 1; |
| 104 | |
| 105 | return e; |
| 106 | } |
| 107 | |
| 108 | /* Free a skiplist entry. */ |
| 109 | |
| 110 | static void |
| 111 | free_skiplist_entry (struct skiplist_entry *e) |
| 112 | { |
| 113 | xfree (e->file); |
| 114 | xfree (e->function); |
| 115 | if (e->function_is_regexp && e->compiled_function_regexp_is_valid) |
| 116 | regfree (&e->compiled_function_regexp); |
| 117 | xfree (e); |
| 118 | } |
| 119 | |
| 120 | /* Wrapper to free_skiplist_entry for use as a cleanup. */ |
| 121 | |
| 122 | static void |
| 123 | free_skiplist_entry_cleanup (void *e) |
| 124 | { |
| 125 | free_skiplist_entry ((struct skiplist_entry *) e); |
| 126 | } |
| 127 | |
| 128 | /* Create a cleanup to free skiplist entry E. */ |
| 129 | |
| 130 | static struct cleanup * |
| 131 | make_free_skiplist_entry_cleanup (struct skiplist_entry *e) |
| 132 | { |
| 133 | return make_cleanup (free_skiplist_entry_cleanup, e); |
| 134 | } |
| 135 | |
| 136 | static void |
| 137 | skip_file_command (char *arg, int from_tty) |
| 138 | { |
| 139 | struct symtab *symtab; |
| 140 | const char *filename = NULL; |
| 141 | |
| 142 | /* If no argument was given, try to default to the last |
| 143 | displayed codepoint. */ |
| 144 | if (arg == NULL) |
| 145 | { |
| 146 | symtab = get_last_displayed_symtab (); |
| 147 | if (symtab == NULL) |
| 148 | error (_("No default file now.")); |
| 149 | |
| 150 | /* It is not a typo, symtab_to_filename_for_display woule be needlessly |
| 151 | ambiguous. */ |
| 152 | filename = symtab_to_fullname (symtab); |
| 153 | } |
| 154 | else |
| 155 | filename = arg; |
| 156 | |
| 157 | add_skiplist_entry (make_skip_entry (0, filename, 0, NULL)); |
| 158 | |
| 159 | printf_filtered (_("File %s will be skipped when stepping.\n"), filename); |
| 160 | } |
| 161 | |
| 162 | /* Create a skiplist entry for the given function NAME and add it to the |
| 163 | list. */ |
| 164 | |
| 165 | static void |
| 166 | skip_function (const char *name) |
| 167 | { |
| 168 | add_skiplist_entry (make_skip_entry (0, NULL, 0, name)); |
| 169 | |
| 170 | printf_filtered (_("Function %s will be skipped when stepping.\n"), name); |
| 171 | } |
| 172 | |
| 173 | static void |
| 174 | skip_function_command (char *arg, int from_tty) |
| 175 | { |
| 176 | /* Default to the current function if no argument is given. */ |
| 177 | if (arg == NULL) |
| 178 | { |
| 179 | const char *name = NULL; |
| 180 | CORE_ADDR pc; |
| 181 | |
| 182 | if (!last_displayed_sal_is_valid ()) |
| 183 | error (_("No default function now.")); |
| 184 | |
| 185 | pc = get_last_displayed_addr (); |
| 186 | if (!find_pc_partial_function (pc, &name, NULL, NULL)) |
| 187 | { |
| 188 | error (_("No function found containing current program point %s."), |
| 189 | paddress (get_current_arch (), pc)); |
| 190 | } |
| 191 | skip_function (name); |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | skip_function (arg); |
| 196 | } |
| 197 | |
| 198 | /* Compile the regexp in E. |
| 199 | An error is thrown if there's an error. |
| 200 | MESSAGE is used as a prefix of the error message. */ |
| 201 | |
| 202 | static void |
| 203 | compile_skip_regexp (struct skiplist_entry *e, const char *message) |
| 204 | { |
| 205 | int code; |
| 206 | int flags = REG_NOSUB; |
| 207 | |
| 208 | #ifdef REG_EXTENDED |
| 209 | flags |= REG_EXTENDED; |
| 210 | #endif |
| 211 | |
| 212 | gdb_assert (e->function_is_regexp && e->function != NULL); |
| 213 | |
| 214 | code = regcomp (&e->compiled_function_regexp, e->function, flags); |
| 215 | if (code != 0) |
| 216 | { |
| 217 | char *err = get_regcomp_error (code, &e->compiled_function_regexp); |
| 218 | |
| 219 | make_cleanup (xfree, err); |
| 220 | error (_("%s: %s"), message, err); |
| 221 | } |
| 222 | e->compiled_function_regexp_is_valid = 1; |
| 223 | } |
| 224 | |
| 225 | /* Process "skip ..." that does not match "skip file" or "skip function". */ |
| 226 | |
| 227 | static void |
| 228 | skip_command (char *arg, int from_tty) |
| 229 | { |
| 230 | const char *file = NULL; |
| 231 | const char *gfile = NULL; |
| 232 | const char *function = NULL; |
| 233 | const char *rfunction = NULL; |
| 234 | char **argv; |
| 235 | struct cleanup *cleanups; |
| 236 | struct skiplist_entry *e; |
| 237 | int i; |
| 238 | |
| 239 | if (arg == NULL) |
| 240 | { |
| 241 | skip_function_command (arg, from_tty); |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | argv = buildargv (arg); |
| 246 | cleanups = make_cleanup_freeargv (argv); |
| 247 | |
| 248 | for (i = 0; argv[i] != NULL; ++i) |
| 249 | { |
| 250 | const char *p = argv[i]; |
| 251 | const char *value = argv[i + 1]; |
| 252 | |
| 253 | if (strcmp (p, "-fi") == 0 |
| 254 | || strcmp (p, "-file") == 0) |
| 255 | { |
| 256 | if (value == NULL) |
| 257 | error (_("Missing value for %s option."), p); |
| 258 | file = value; |
| 259 | ++i; |
| 260 | } |
| 261 | else if (strcmp (p, "-gfi") == 0 |
| 262 | || strcmp (p, "-gfile") == 0) |
| 263 | { |
| 264 | if (value == NULL) |
| 265 | error (_("Missing value for %s option."), p); |
| 266 | gfile = value; |
| 267 | ++i; |
| 268 | } |
| 269 | else if (strcmp (p, "-fu") == 0 |
| 270 | || strcmp (p, "-function") == 0) |
| 271 | { |
| 272 | if (value == NULL) |
| 273 | error (_("Missing value for %s option."), p); |
| 274 | function = value; |
| 275 | ++i; |
| 276 | } |
| 277 | else if (strcmp (p, "-rfu") == 0 |
| 278 | || strcmp (p, "-rfunction") == 0) |
| 279 | { |
| 280 | if (value == NULL) |
| 281 | error (_("Missing value for %s option."), p); |
| 282 | rfunction = value; |
| 283 | ++i; |
| 284 | } |
| 285 | else if (*p == '-') |
| 286 | error (_("Invalid skip option: %s"), p); |
| 287 | else if (i == 0) |
| 288 | { |
| 289 | /* Assume the user entered "skip FUNCTION-NAME". |
| 290 | FUNCTION-NAME may be `foo (int)', and therefore we pass the |
| 291 | complete original arg to skip_function command as if the user |
| 292 | typed "skip function arg". */ |
| 293 | do_cleanups (cleanups); |
| 294 | skip_function_command (arg, from_tty); |
| 295 | return; |
| 296 | } |
| 297 | else |
| 298 | error (_("Invalid argument: %s"), p); |
| 299 | } |
| 300 | |
| 301 | if (file != NULL && gfile != NULL) |
| 302 | error (_("Cannot specify both -file and -gfile.")); |
| 303 | |
| 304 | if (function != NULL && rfunction != NULL) |
| 305 | error (_("Cannot specify both -function and -rfunction.")); |
| 306 | |
| 307 | /* This shouldn't happen as "skip" by itself gets punted to |
| 308 | skip_function_command. */ |
| 309 | gdb_assert (file != NULL || gfile != NULL |
| 310 | || function != NULL || rfunction != NULL); |
| 311 | |
| 312 | e = make_skip_entry (gfile != NULL, file ? file : gfile, |
| 313 | rfunction != NULL, function ? function : rfunction); |
| 314 | if (rfunction != NULL) |
| 315 | { |
| 316 | struct cleanup *rf_cleanups = make_free_skiplist_entry_cleanup (e); |
| 317 | |
| 318 | compile_skip_regexp (e, _("regexp")); |
| 319 | discard_cleanups (rf_cleanups); |
| 320 | } |
| 321 | add_skiplist_entry (e); |
| 322 | |
| 323 | /* I18N concerns drive some of the choices here (we can't piece together |
| 324 | the output too much). OTOH we want to keep this simple. Therefore the |
| 325 | only polish we add to the output is to append "(s)" to "File" or |
| 326 | "Function" if they're a glob/regexp. */ |
| 327 | { |
| 328 | const char *file_to_print = file != NULL ? file : gfile; |
| 329 | const char *function_to_print = function != NULL ? function : rfunction; |
| 330 | const char *file_text = gfile != NULL ? _("File(s)") : _("File"); |
| 331 | const char *lower_file_text = gfile != NULL ? _("file(s)") : _("file"); |
| 332 | const char *function_text |
| 333 | = rfunction != NULL ? _("Function(s)") : _("Function"); |
| 334 | |
| 335 | if (function_to_print == NULL) |
| 336 | { |
| 337 | printf_filtered (_("%s %s will be skipped when stepping.\n"), |
| 338 | file_text, file_to_print); |
| 339 | } |
| 340 | else if (file_to_print == NULL) |
| 341 | { |
| 342 | printf_filtered (_("%s %s will be skipped when stepping.\n"), |
| 343 | function_text, function_to_print); |
| 344 | } |
| 345 | else |
| 346 | { |
| 347 | printf_filtered (_("%s %s in %s %s will be skipped" |
| 348 | " when stepping.\n"), |
| 349 | function_text, function_to_print, |
| 350 | lower_file_text, file_to_print); |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | do_cleanups (cleanups); |
| 355 | } |
| 356 | |
| 357 | static void |
| 358 | skip_info (char *arg, int from_tty) |
| 359 | { |
| 360 | struct skiplist_entry *e; |
| 361 | int num_printable_entries = 0; |
| 362 | struct value_print_options opts; |
| 363 | struct cleanup *tbl_chain; |
| 364 | |
| 365 | get_user_print_options (&opts); |
| 366 | |
| 367 | /* Count the number of rows in the table and see if we need space for a |
| 368 | 64-bit address anywhere. */ |
| 369 | ALL_SKIPLIST_ENTRIES (e) |
| 370 | if (arg == NULL || number_is_in_list (arg, e->number)) |
| 371 | num_printable_entries++; |
| 372 | |
| 373 | if (num_printable_entries == 0) |
| 374 | { |
| 375 | if (arg == NULL) |
| 376 | ui_out_message (current_uiout, 0, _("\ |
| 377 | Not skipping any files or functions.\n")); |
| 378 | else |
| 379 | ui_out_message (current_uiout, 0, |
| 380 | _("No skiplist entries found with number %s.\n"), arg); |
| 381 | |
| 382 | return; |
| 383 | } |
| 384 | |
| 385 | tbl_chain = make_cleanup_ui_out_table_begin_end (current_uiout, 6, |
| 386 | num_printable_entries, |
| 387 | "SkiplistTable"); |
| 388 | |
| 389 | ui_out_table_header (current_uiout, 5, ui_left, "number", "Num"); /* 1 */ |
| 390 | ui_out_table_header (current_uiout, 3, ui_left, "enabled", "Enb"); /* 2 */ |
| 391 | ui_out_table_header (current_uiout, 4, ui_right, "regexp", "Glob"); /* 3 */ |
| 392 | ui_out_table_header (current_uiout, 20, ui_left, "file", "File"); /* 4 */ |
| 393 | ui_out_table_header (current_uiout, 2, ui_right, "regexp", "RE"); /* 5 */ |
| 394 | ui_out_table_header (current_uiout, 40, ui_noalign, |
| 395 | "function", "Function"); /* 6 */ |
| 396 | ui_out_table_body (current_uiout); |
| 397 | |
| 398 | ALL_SKIPLIST_ENTRIES (e) |
| 399 | { |
| 400 | struct cleanup *entry_chain; |
| 401 | |
| 402 | QUIT; |
| 403 | if (arg != NULL && !number_is_in_list (arg, e->number)) |
| 404 | continue; |
| 405 | |
| 406 | entry_chain = make_cleanup_ui_out_tuple_begin_end (current_uiout, |
| 407 | "blklst-entry"); |
| 408 | ui_out_field_int (current_uiout, "number", e->number); /* 1 */ |
| 409 | |
| 410 | if (e->enabled) |
| 411 | ui_out_field_string (current_uiout, "enabled", "y"); /* 2 */ |
| 412 | else |
| 413 | ui_out_field_string (current_uiout, "enabled", "n"); /* 2 */ |
| 414 | |
| 415 | if (e->file_is_glob) |
| 416 | ui_out_field_string (current_uiout, "regexp", "y"); /* 3 */ |
| 417 | else |
| 418 | ui_out_field_string (current_uiout, "regexp", "n"); /* 3 */ |
| 419 | |
| 420 | ui_out_field_string (current_uiout, "file", |
| 421 | e->file ? e->file : "<none>"); /* 4 */ |
| 422 | if (e->function_is_regexp) |
| 423 | ui_out_field_string (current_uiout, "regexp", "y"); /* 5 */ |
| 424 | else |
| 425 | ui_out_field_string (current_uiout, "regexp", "n"); /* 5 */ |
| 426 | |
| 427 | ui_out_field_string (current_uiout, "function", |
| 428 | e->function ? e->function : "<none>"); /* 6 */ |
| 429 | |
| 430 | ui_out_text (current_uiout, "\n"); |
| 431 | do_cleanups (entry_chain); |
| 432 | } |
| 433 | |
| 434 | do_cleanups (tbl_chain); |
| 435 | } |
| 436 | |
| 437 | static void |
| 438 | skip_enable_command (char *arg, int from_tty) |
| 439 | { |
| 440 | struct skiplist_entry *e; |
| 441 | int found = 0; |
| 442 | |
| 443 | ALL_SKIPLIST_ENTRIES (e) |
| 444 | if (arg == NULL || number_is_in_list (arg, e->number)) |
| 445 | { |
| 446 | e->enabled = 1; |
| 447 | found = 1; |
| 448 | } |
| 449 | |
| 450 | if (!found) |
| 451 | error (_("No skiplist entries found with number %s."), arg); |
| 452 | } |
| 453 | |
| 454 | static void |
| 455 | skip_disable_command (char *arg, int from_tty) |
| 456 | { |
| 457 | struct skiplist_entry *e; |
| 458 | int found = 0; |
| 459 | |
| 460 | ALL_SKIPLIST_ENTRIES (e) |
| 461 | if (arg == NULL || number_is_in_list (arg, e->number)) |
| 462 | { |
| 463 | e->enabled = 0; |
| 464 | found = 1; |
| 465 | } |
| 466 | |
| 467 | if (!found) |
| 468 | error (_("No skiplist entries found with number %s."), arg); |
| 469 | } |
| 470 | |
| 471 | static void |
| 472 | skip_delete_command (char *arg, int from_tty) |
| 473 | { |
| 474 | struct skiplist_entry *e, *temp, *b_prev; |
| 475 | int found = 0; |
| 476 | |
| 477 | b_prev = 0; |
| 478 | ALL_SKIPLIST_ENTRIES_SAFE (e, temp) |
| 479 | if (arg == NULL || number_is_in_list (arg, e->number)) |
| 480 | { |
| 481 | if (b_prev != NULL) |
| 482 | b_prev->next = e->next; |
| 483 | else |
| 484 | skiplist_entry_chain = e->next; |
| 485 | |
| 486 | free_skiplist_entry (e); |
| 487 | found = 1; |
| 488 | } |
| 489 | else |
| 490 | { |
| 491 | b_prev = e; |
| 492 | } |
| 493 | |
| 494 | if (!found) |
| 495 | error (_("No skiplist entries found with number %s."), arg); |
| 496 | } |
| 497 | |
| 498 | /* Add the given skiplist entry to our list, and set the entry's number. */ |
| 499 | |
| 500 | static void |
| 501 | add_skiplist_entry (struct skiplist_entry *e) |
| 502 | { |
| 503 | struct skiplist_entry *e1; |
| 504 | |
| 505 | e->number = ++skiplist_entry_count; |
| 506 | |
| 507 | /* Add to the end of the chain so that the list of |
| 508 | skiplist entries will be in numerical order. */ |
| 509 | |
| 510 | e1 = skiplist_entry_chain; |
| 511 | if (e1 == NULL) |
| 512 | skiplist_entry_chain = e; |
| 513 | else |
| 514 | { |
| 515 | while (e1->next) |
| 516 | e1 = e1->next; |
| 517 | e1->next = e; |
| 518 | } |
| 519 | } |
| 520 | |
| 521 | /* Return non-zero if we're stopped at a file to be skipped. */ |
| 522 | |
| 523 | static int |
| 524 | skip_file_p (struct skiplist_entry *e, |
| 525 | const struct symtab_and_line *function_sal) |
| 526 | { |
| 527 | gdb_assert (e->file != NULL && !e->file_is_glob); |
| 528 | |
| 529 | if (function_sal->symtab == NULL) |
| 530 | return 0; |
| 531 | |
| 532 | /* Check first sole SYMTAB->FILENAME. It may not be a substring of |
| 533 | symtab_to_fullname as it may contain "./" etc. */ |
| 534 | if (compare_filenames_for_search (function_sal->symtab->filename, e->file)) |
| 535 | return 1; |
| 536 | |
| 537 | /* Before we invoke realpath, which can get expensive when many |
| 538 | files are involved, do a quick comparison of the basenames. */ |
| 539 | if (!basenames_may_differ |
| 540 | && filename_cmp (lbasename (function_sal->symtab->filename), |
| 541 | lbasename (e->file)) != 0) |
| 542 | return 0; |
| 543 | |
| 544 | /* Note: symtab_to_fullname caches its result, thus we don't have to. */ |
| 545 | { |
| 546 | const char *fullname = symtab_to_fullname (function_sal->symtab); |
| 547 | |
| 548 | if (compare_filenames_for_search (fullname, e->file)) |
| 549 | return 1; |
| 550 | } |
| 551 | |
| 552 | return 0; |
| 553 | } |
| 554 | |
| 555 | /* Return non-zero if we're stopped at a globbed file to be skipped. */ |
| 556 | |
| 557 | static int |
| 558 | skip_gfile_p (struct skiplist_entry *e, |
| 559 | const struct symtab_and_line *function_sal) |
| 560 | { |
| 561 | gdb_assert (e->file != NULL && e->file_is_glob); |
| 562 | |
| 563 | if (function_sal->symtab == NULL) |
| 564 | return 0; |
| 565 | |
| 566 | /* Check first sole SYMTAB->FILENAME. It may not be a substring of |
| 567 | symtab_to_fullname as it may contain "./" etc. */ |
| 568 | if (gdb_filename_fnmatch (e->file, function_sal->symtab->filename, |
| 569 | FNM_FILE_NAME | FNM_NOESCAPE) == 0) |
| 570 | return 1; |
| 571 | |
| 572 | /* Before we invoke symtab_to_fullname, which is expensive, do a quick |
| 573 | comparison of the basenames. |
| 574 | Note that we assume that lbasename works with glob-style patterns. |
| 575 | If the basename of the glob pattern is something like "*.c" then this |
| 576 | isn't much of a win. Oh well. */ |
| 577 | if (!basenames_may_differ |
| 578 | && gdb_filename_fnmatch (lbasename (e->file), |
| 579 | lbasename (function_sal->symtab->filename), |
| 580 | FNM_FILE_NAME | FNM_NOESCAPE) != 0) |
| 581 | return 0; |
| 582 | |
| 583 | /* Note: symtab_to_fullname caches its result, thus we don't have to. */ |
| 584 | { |
| 585 | const char *fullname = symtab_to_fullname (function_sal->symtab); |
| 586 | |
| 587 | if (compare_glob_filenames_for_search (fullname, e->file)) |
| 588 | return 1; |
| 589 | } |
| 590 | |
| 591 | return 0; |
| 592 | } |
| 593 | |
| 594 | /* Return non-zero if we're stopped at a function to be skipped. */ |
| 595 | |
| 596 | static int |
| 597 | skip_function_p (struct skiplist_entry *e, const char *function_name) |
| 598 | { |
| 599 | gdb_assert (e->function != NULL && !e->function_is_regexp); |
| 600 | return strcmp_iw (function_name, e->function) == 0; |
| 601 | } |
| 602 | |
| 603 | /* Return non-zero if we're stopped at a function regexp to be skipped. */ |
| 604 | |
| 605 | static int |
| 606 | skip_rfunction_p (struct skiplist_entry *e, const char *function_name) |
| 607 | { |
| 608 | gdb_assert (e->function != NULL && e->function_is_regexp |
| 609 | && e->compiled_function_regexp_is_valid); |
| 610 | return (regexec (&e->compiled_function_regexp, function_name, 0, NULL, 0) |
| 611 | == 0); |
| 612 | } |
| 613 | |
| 614 | /* See skip.h. */ |
| 615 | |
| 616 | int |
| 617 | function_name_is_marked_for_skip (const char *function_name, |
| 618 | const struct symtab_and_line *function_sal) |
| 619 | { |
| 620 | struct skiplist_entry *e; |
| 621 | |
| 622 | if (function_name == NULL) |
| 623 | return 0; |
| 624 | |
| 625 | ALL_SKIPLIST_ENTRIES (e) |
| 626 | { |
| 627 | int skip_by_file = 0; |
| 628 | int skip_by_function = 0; |
| 629 | |
| 630 | if (!e->enabled) |
| 631 | continue; |
| 632 | |
| 633 | if (e->file != NULL) |
| 634 | { |
| 635 | if (e->file_is_glob) |
| 636 | { |
| 637 | if (skip_gfile_p (e, function_sal)) |
| 638 | skip_by_file = 1; |
| 639 | } |
| 640 | else |
| 641 | { |
| 642 | if (skip_file_p (e, function_sal)) |
| 643 | skip_by_file = 1; |
| 644 | } |
| 645 | } |
| 646 | if (e->function != NULL) |
| 647 | { |
| 648 | if (e->function_is_regexp) |
| 649 | { |
| 650 | if (skip_rfunction_p (e, function_name)) |
| 651 | skip_by_function = 1; |
| 652 | } |
| 653 | else |
| 654 | { |
| 655 | if (skip_function_p (e, function_name)) |
| 656 | skip_by_function = 1; |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | /* If both file and function must match, make sure we don't errantly |
| 661 | exit if only one of them match. */ |
| 662 | if (e->file != NULL && e->function != NULL) |
| 663 | { |
| 664 | if (skip_by_file && skip_by_function) |
| 665 | return 1; |
| 666 | } |
| 667 | /* Only one of file/function is specified. */ |
| 668 | else if (skip_by_file || skip_by_function) |
| 669 | return 1; |
| 670 | } |
| 671 | |
| 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 676 | extern initialize_file_ftype _initialize_step_skip; |
| 677 | |
| 678 | void |
| 679 | _initialize_step_skip (void) |
| 680 | { |
| 681 | static struct cmd_list_element *skiplist = NULL; |
| 682 | struct cmd_list_element *c; |
| 683 | |
| 684 | skiplist_entry_chain = 0; |
| 685 | skiplist_entry_count = 0; |
| 686 | |
| 687 | add_prefix_cmd ("skip", class_breakpoint, skip_command, _("\ |
| 688 | Ignore a function while stepping.\n\ |
| 689 | \n\ |
| 690 | Usage: skip [FUNCTION-NAME]\n\ |
| 691 | skip [<file-spec>] [<function-spec>]\n\ |
| 692 | If no arguments are given, ignore the current function.\n\ |
| 693 | \n\ |
| 694 | <file-spec> is one of:\n\ |
| 695 | -fi|-file FILE-NAME\n\ |
| 696 | -gfi|-gfile GLOB-FILE-PATTERN\n\ |
| 697 | <function-spec> is one of:\n\ |
| 698 | -fu|-function FUNCTION-NAME\n\ |
| 699 | -rfu|-rfunction FUNCTION-NAME-REGULAR-EXPRESSION"), |
| 700 | &skiplist, "skip ", 1, &cmdlist); |
| 701 | |
| 702 | c = add_cmd ("file", class_breakpoint, skip_file_command, _("\ |
| 703 | Ignore a file while stepping.\n\ |
| 704 | Usage: skip file [FILE-NAME]\n\ |
| 705 | If no filename is given, ignore the current file."), |
| 706 | &skiplist); |
| 707 | set_cmd_completer (c, filename_completer); |
| 708 | |
| 709 | c = add_cmd ("function", class_breakpoint, skip_function_command, _("\ |
| 710 | Ignore a function while stepping.\n\ |
| 711 | Usage: skip function [FUNCTION-NAME]\n\ |
| 712 | If no function name is given, skip the current function."), |
| 713 | &skiplist); |
| 714 | set_cmd_completer (c, location_completer); |
| 715 | |
| 716 | add_cmd ("enable", class_breakpoint, skip_enable_command, _("\ |
| 717 | Enable skip entries. You can specify numbers (e.g. \"skip enable 1 3\"), \ |
| 718 | ranges (e.g. \"skip enable 4-8\"), or both (e.g. \"skip enable 1 3 4-8\").\n\n\ |
| 719 | If you don't specify any numbers or ranges, we'll enable all skip entries.\n\n\ |
| 720 | Usage: skip enable [NUMBERS AND/OR RANGES]"), |
| 721 | &skiplist); |
| 722 | |
| 723 | add_cmd ("disable", class_breakpoint, skip_disable_command, _("\ |
| 724 | Disable skip entries. You can specify numbers (e.g. \"skip disable 1 3\"), \ |
| 725 | ranges (e.g. \"skip disable 4-8\"), or both (e.g. \"skip disable 1 3 4-8\").\n\n\ |
| 726 | If you don't specify any numbers or ranges, we'll disable all skip entries.\n\n\ |
| 727 | Usage: skip disable [NUMBERS AND/OR RANGES]"), |
| 728 | &skiplist); |
| 729 | |
| 730 | add_cmd ("delete", class_breakpoint, skip_delete_command, _("\ |
| 731 | Delete skip entries. You can specify numbers (e.g. \"skip delete 1 3\"), \ |
| 732 | ranges (e.g. \"skip delete 4-8\"), or both (e.g. \"skip delete 1 3 4-8\").\n\n\ |
| 733 | If you don't specify any numbers or ranges, we'll delete all skip entries.\n\n\ |
| 734 | Usage: skip delete [NUMBERS AND/OR RANGES]"), |
| 735 | &skiplist); |
| 736 | |
| 737 | add_info ("skip", skip_info, _("\ |
| 738 | Display the status of skips. You can specify numbers (e.g. \"skip info 1 3\"), \ |
| 739 | ranges (e.g. \"skip info 4-8\"), or both (e.g. \"skip info 1 3 4-8\").\n\n\ |
| 740 | If you don't specify any numbers or ranges, we'll show all skips.\n\n\ |
| 741 | Usage: skip info [NUMBERS AND/OR RANGES]\n\ |
| 742 | The \"Type\" column indicates one of:\n\ |
| 743 | \tfile - ignored file\n\ |
| 744 | \tfunction - ignored function")); |
| 745 | } |