| 1 | /* Skipping uninteresting files and functions while stepping. |
| 2 | |
| 3 | Copyright (C) 2011-2020 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 | #include "gdbsupport/gdb_optional.h" |
| 38 | #include <list> |
| 39 | #include "cli/cli-style.h" |
| 40 | |
| 41 | /* True if we want to print debug printouts related to file/function |
| 42 | skipping. */ |
| 43 | static bool debug_skip = false; |
| 44 | |
| 45 | class skiplist_entry |
| 46 | { |
| 47 | public: |
| 48 | /* Create a skiplist_entry object and add it to the chain. */ |
| 49 | static void add_entry (bool file_is_glob, |
| 50 | std::string &&file, |
| 51 | bool function_is_regexp, |
| 52 | std::string &&function); |
| 53 | |
| 54 | /* Return true if the skip entry has a file or glob-style file |
| 55 | pattern that matches FUNCTION_SAL. */ |
| 56 | bool skip_file_p (const symtab_and_line &function_sal) const; |
| 57 | |
| 58 | /* Return true if the skip entry has a function or function regexp |
| 59 | that matches FUNCTION_NAME. */ |
| 60 | bool skip_function_p (const char *function_name) const; |
| 61 | |
| 62 | /* Getters. */ |
| 63 | int number () const { return m_number; }; |
| 64 | bool enabled () const { return m_enabled; }; |
| 65 | bool file_is_glob () const { return m_file_is_glob; } |
| 66 | const std::string &file () const { return m_file; } |
| 67 | const std::string &function () const { return m_function; } |
| 68 | bool function_is_regexp () const { return m_function_is_regexp; } |
| 69 | |
| 70 | /* Setters. */ |
| 71 | void enable () { m_enabled = true; }; |
| 72 | void disable () { m_enabled = false; }; |
| 73 | |
| 74 | /* Disable copy. */ |
| 75 | skiplist_entry (const skiplist_entry &) = delete; |
| 76 | void operator= (const skiplist_entry &) = delete; |
| 77 | |
| 78 | private: |
| 79 | /* Key that grants access to the constructor. */ |
| 80 | struct private_key {}; |
| 81 | public: |
| 82 | /* Public so we can construct with container::emplace_back. Since |
| 83 | it requires a private class key, it can't be called from outside. |
| 84 | Use the add_entry static factory method to construct instead. */ |
| 85 | skiplist_entry (bool file_is_glob, std::string &&file, |
| 86 | bool function_is_regexp, std::string &&function, |
| 87 | private_key); |
| 88 | |
| 89 | private: |
| 90 | /* Return true if we're stopped at a file to be skipped. */ |
| 91 | bool do_skip_file_p (const symtab_and_line &function_sal) const; |
| 92 | |
| 93 | /* Return true if we're stopped at a globbed file to be skipped. */ |
| 94 | bool do_skip_gfile_p (const symtab_and_line &function_sal) const; |
| 95 | |
| 96 | private: /* data */ |
| 97 | int m_number = -1; |
| 98 | |
| 99 | /* True if FILE is a glob-style pattern. |
| 100 | Otherwise it is the plain file name (possibly with directories). */ |
| 101 | bool m_file_is_glob; |
| 102 | |
| 103 | /* The name of the file or empty if no name. */ |
| 104 | std::string m_file; |
| 105 | |
| 106 | /* True if FUNCTION is a regexp. |
| 107 | Otherwise it is a plain function name (possibly with arguments, |
| 108 | for C++). */ |
| 109 | bool m_function_is_regexp; |
| 110 | |
| 111 | /* The name of the function or empty if no name. */ |
| 112 | std::string m_function; |
| 113 | |
| 114 | /* If this is a function regexp, the compiled form. */ |
| 115 | gdb::optional<compiled_regex> m_compiled_function_regexp; |
| 116 | |
| 117 | /* Enabled/disabled state. */ |
| 118 | bool m_enabled = true; |
| 119 | }; |
| 120 | |
| 121 | static std::list<skiplist_entry> skiplist_entries; |
| 122 | static int highest_skiplist_entry_num = 0; |
| 123 | |
| 124 | skiplist_entry::skiplist_entry (bool file_is_glob, |
| 125 | std::string &&file, |
| 126 | bool function_is_regexp, |
| 127 | std::string &&function, |
| 128 | private_key) |
| 129 | : m_file_is_glob (file_is_glob), |
| 130 | m_file (std::move (file)), |
| 131 | m_function_is_regexp (function_is_regexp), |
| 132 | m_function (std::move (function)) |
| 133 | { |
| 134 | gdb_assert (!m_file.empty () || !m_function.empty ()); |
| 135 | |
| 136 | if (m_file_is_glob) |
| 137 | gdb_assert (!m_file.empty ()); |
| 138 | |
| 139 | if (m_function_is_regexp) |
| 140 | { |
| 141 | gdb_assert (!m_function.empty ()); |
| 142 | |
| 143 | int flags = REG_NOSUB; |
| 144 | #ifdef REG_EXTENDED |
| 145 | flags |= REG_EXTENDED; |
| 146 | #endif |
| 147 | |
| 148 | gdb_assert (!m_function.empty ()); |
| 149 | m_compiled_function_regexp.emplace (m_function.c_str (), flags, |
| 150 | _("regexp")); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | void |
| 155 | skiplist_entry::add_entry (bool file_is_glob, std::string &&file, |
| 156 | bool function_is_regexp, std::string &&function) |
| 157 | { |
| 158 | skiplist_entries.emplace_back (file_is_glob, |
| 159 | std::move (file), |
| 160 | function_is_regexp, |
| 161 | std::move (function), |
| 162 | private_key {}); |
| 163 | |
| 164 | /* Incremented after push_back, in case push_back throws. */ |
| 165 | skiplist_entries.back ().m_number = ++highest_skiplist_entry_num; |
| 166 | } |
| 167 | |
| 168 | static void |
| 169 | skip_file_command (const char *arg, int from_tty) |
| 170 | { |
| 171 | struct symtab *symtab; |
| 172 | const char *filename = NULL; |
| 173 | |
| 174 | /* If no argument was given, try to default to the last |
| 175 | displayed codepoint. */ |
| 176 | if (arg == NULL) |
| 177 | { |
| 178 | symtab = get_last_displayed_symtab (); |
| 179 | if (symtab == NULL) |
| 180 | error (_("No default file now.")); |
| 181 | |
| 182 | /* It is not a typo, symtab_to_filename_for_display would be needlessly |
| 183 | ambiguous. */ |
| 184 | filename = symtab_to_fullname (symtab); |
| 185 | } |
| 186 | else |
| 187 | filename = arg; |
| 188 | |
| 189 | skiplist_entry::add_entry (false, std::string (filename), |
| 190 | false, std::string ()); |
| 191 | |
| 192 | printf_filtered (_("File %s will be skipped when stepping.\n"), filename); |
| 193 | } |
| 194 | |
| 195 | /* Create a skiplist entry for the given function NAME and add it to the |
| 196 | list. */ |
| 197 | |
| 198 | static void |
| 199 | skip_function (const char *name) |
| 200 | { |
| 201 | skiplist_entry::add_entry (false, std::string (), false, std::string (name)); |
| 202 | |
| 203 | printf_filtered (_("Function %s will be skipped when stepping.\n"), name); |
| 204 | } |
| 205 | |
| 206 | static void |
| 207 | skip_function_command (const char *arg, int from_tty) |
| 208 | { |
| 209 | /* Default to the current function if no argument is given. */ |
| 210 | if (arg == NULL) |
| 211 | { |
| 212 | frame_info *fi = get_selected_frame (_("No default function now.")); |
| 213 | struct symbol *sym = get_frame_function (fi); |
| 214 | const char *name = NULL; |
| 215 | |
| 216 | if (sym != NULL) |
| 217 | name = sym->print_name (); |
| 218 | else |
| 219 | error (_("No function found containing current program point %s."), |
| 220 | paddress (get_current_arch (), get_frame_pc (fi))); |
| 221 | skip_function (name); |
| 222 | return; |
| 223 | } |
| 224 | |
| 225 | skip_function (arg); |
| 226 | } |
| 227 | |
| 228 | /* Process "skip ..." that does not match "skip file" or "skip function". */ |
| 229 | |
| 230 | static void |
| 231 | skip_command (const char *arg, int from_tty) |
| 232 | { |
| 233 | const char *file = NULL; |
| 234 | const char *gfile = NULL; |
| 235 | const char *function = NULL; |
| 236 | const char *rfunction = NULL; |
| 237 | int i; |
| 238 | |
| 239 | if (arg == NULL) |
| 240 | { |
| 241 | skip_function_command (arg, from_tty); |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | gdb_argv argv (arg); |
| 246 | |
| 247 | for (i = 0; argv[i] != NULL; ++i) |
| 248 | { |
| 249 | const char *p = argv[i]; |
| 250 | const char *value = argv[i + 1]; |
| 251 | |
| 252 | if (strcmp (p, "-fi") == 0 |
| 253 | || strcmp (p, "-file") == 0) |
| 254 | { |
| 255 | if (value == NULL) |
| 256 | error (_("Missing value for %s option."), p); |
| 257 | file = value; |
| 258 | ++i; |
| 259 | } |
| 260 | else if (strcmp (p, "-gfi") == 0 |
| 261 | || strcmp (p, "-gfile") == 0) |
| 262 | { |
| 263 | if (value == NULL) |
| 264 | error (_("Missing value for %s option."), p); |
| 265 | gfile = value; |
| 266 | ++i; |
| 267 | } |
| 268 | else if (strcmp (p, "-fu") == 0 |
| 269 | || strcmp (p, "-function") == 0) |
| 270 | { |
| 271 | if (value == NULL) |
| 272 | error (_("Missing value for %s option."), p); |
| 273 | function = value; |
| 274 | ++i; |
| 275 | } |
| 276 | else if (strcmp (p, "-rfu") == 0 |
| 277 | || strcmp (p, "-rfunction") == 0) |
| 278 | { |
| 279 | if (value == NULL) |
| 280 | error (_("Missing value for %s option."), p); |
| 281 | rfunction = value; |
| 282 | ++i; |
| 283 | } |
| 284 | else if (*p == '-') |
| 285 | error (_("Invalid skip option: %s"), p); |
| 286 | else if (i == 0) |
| 287 | { |
| 288 | /* Assume the user entered "skip FUNCTION-NAME". |
| 289 | FUNCTION-NAME may be `foo (int)', and therefore we pass the |
| 290 | complete original arg to skip_function command as if the user |
| 291 | typed "skip function arg". */ |
| 292 | skip_function_command (arg, from_tty); |
| 293 | return; |
| 294 | } |
| 295 | else |
| 296 | error (_("Invalid argument: %s"), p); |
| 297 | } |
| 298 | |
| 299 | if (file != NULL && gfile != NULL) |
| 300 | error (_("Cannot specify both -file and -gfile.")); |
| 301 | |
| 302 | if (function != NULL && rfunction != NULL) |
| 303 | error (_("Cannot specify both -function and -rfunction.")); |
| 304 | |
| 305 | /* This shouldn't happen as "skip" by itself gets punted to |
| 306 | skip_function_command. */ |
| 307 | gdb_assert (file != NULL || gfile != NULL |
| 308 | || function != NULL || rfunction != NULL); |
| 309 | |
| 310 | std::string entry_file; |
| 311 | if (file != NULL) |
| 312 | entry_file = file; |
| 313 | else if (gfile != NULL) |
| 314 | entry_file = gfile; |
| 315 | |
| 316 | std::string entry_function; |
| 317 | if (function != NULL) |
| 318 | entry_function = function; |
| 319 | else if (rfunction != NULL) |
| 320 | entry_function = rfunction; |
| 321 | |
| 322 | skiplist_entry::add_entry (gfile != NULL, std::move (entry_file), |
| 323 | rfunction != NULL, std::move (entry_function)); |
| 324 | |
| 325 | /* I18N concerns drive some of the choices here (we can't piece together |
| 326 | the output too much). OTOH we want to keep this simple. Therefore the |
| 327 | only polish we add to the output is to append "(s)" to "File" or |
| 328 | "Function" if they're a glob/regexp. */ |
| 329 | { |
| 330 | const char *file_to_print = file != NULL ? file : gfile; |
| 331 | const char *function_to_print = function != NULL ? function : rfunction; |
| 332 | const char *file_text = gfile != NULL ? _("File(s)") : _("File"); |
| 333 | const char *lower_file_text = gfile != NULL ? _("file(s)") : _("file"); |
| 334 | const char *function_text |
| 335 | = rfunction != NULL ? _("Function(s)") : _("Function"); |
| 336 | |
| 337 | if (function_to_print == NULL) |
| 338 | { |
| 339 | printf_filtered (_("%s %s will be skipped when stepping.\n"), |
| 340 | file_text, file_to_print); |
| 341 | } |
| 342 | else if (file_to_print == NULL) |
| 343 | { |
| 344 | printf_filtered (_("%s %s will be skipped when stepping.\n"), |
| 345 | function_text, function_to_print); |
| 346 | } |
| 347 | else |
| 348 | { |
| 349 | printf_filtered (_("%s %s in %s %s will be skipped" |
| 350 | " when stepping.\n"), |
| 351 | function_text, function_to_print, |
| 352 | lower_file_text, file_to_print); |
| 353 | } |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | static void |
| 358 | info_skip_command (const char *arg, int from_tty) |
| 359 | { |
| 360 | int num_printable_entries = 0; |
| 361 | struct value_print_options opts; |
| 362 | |
| 363 | get_user_print_options (&opts); |
| 364 | |
| 365 | /* Count the number of rows in the table and see if we need space for a |
| 366 | 64-bit address anywhere. */ |
| 367 | for (const skiplist_entry &e : skiplist_entries) |
| 368 | if (arg == NULL || number_is_in_list (arg, e.number ())) |
| 369 | num_printable_entries++; |
| 370 | |
| 371 | if (num_printable_entries == 0) |
| 372 | { |
| 373 | if (arg == NULL) |
| 374 | current_uiout->message (_("Not skipping any files or functions.\n")); |
| 375 | else |
| 376 | current_uiout->message ( |
| 377 | _("No skiplist entries found with number %s.\n"), arg); |
| 378 | |
| 379 | return; |
| 380 | } |
| 381 | |
| 382 | ui_out_emit_table table_emitter (current_uiout, 6, num_printable_entries, |
| 383 | "SkiplistTable"); |
| 384 | |
| 385 | current_uiout->table_header (5, ui_left, "number", "Num"); /* 1 */ |
| 386 | current_uiout->table_header (3, ui_left, "enabled", "Enb"); /* 2 */ |
| 387 | current_uiout->table_header (4, ui_right, "regexp", "Glob"); /* 3 */ |
| 388 | current_uiout->table_header (20, ui_left, "file", "File"); /* 4 */ |
| 389 | current_uiout->table_header (2, ui_right, "regexp", "RE"); /* 5 */ |
| 390 | current_uiout->table_header (40, ui_noalign, "function", "Function"); /* 6 */ |
| 391 | current_uiout->table_body (); |
| 392 | |
| 393 | for (const skiplist_entry &e : skiplist_entries) |
| 394 | { |
| 395 | QUIT; |
| 396 | if (arg != NULL && !number_is_in_list (arg, e.number ())) |
| 397 | continue; |
| 398 | |
| 399 | ui_out_emit_tuple tuple_emitter (current_uiout, "blklst-entry"); |
| 400 | current_uiout->field_signed ("number", e.number ()); /* 1 */ |
| 401 | |
| 402 | if (e.enabled ()) |
| 403 | current_uiout->field_string ("enabled", "y"); /* 2 */ |
| 404 | else |
| 405 | current_uiout->field_string ("enabled", "n"); /* 2 */ |
| 406 | |
| 407 | if (e.file_is_glob ()) |
| 408 | current_uiout->field_string ("regexp", "y"); /* 3 */ |
| 409 | else |
| 410 | current_uiout->field_string ("regexp", "n"); /* 3 */ |
| 411 | |
| 412 | current_uiout->field_string ("file", |
| 413 | e.file ().empty () ? "<none>" |
| 414 | : e.file ().c_str (), |
| 415 | e.file ().empty () |
| 416 | ? metadata_style.style () |
| 417 | : file_name_style.style ()); /* 4 */ |
| 418 | if (e.function_is_regexp ()) |
| 419 | current_uiout->field_string ("regexp", "y"); /* 5 */ |
| 420 | else |
| 421 | current_uiout->field_string ("regexp", "n"); /* 5 */ |
| 422 | |
| 423 | current_uiout->field_string ("function", |
| 424 | e.function ().empty () ? "<none>" |
| 425 | : e.function ().c_str (), |
| 426 | e.function ().empty () |
| 427 | ? metadata_style.style () |
| 428 | : function_name_style.style ()); /* 6 */ |
| 429 | |
| 430 | current_uiout->text ("\n"); |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | static void |
| 435 | skip_enable_command (const char *arg, int from_tty) |
| 436 | { |
| 437 | bool found = false; |
| 438 | |
| 439 | for (skiplist_entry &e : skiplist_entries) |
| 440 | if (arg == NULL || number_is_in_list (arg, e.number ())) |
| 441 | { |
| 442 | e.enable (); |
| 443 | found = true; |
| 444 | } |
| 445 | |
| 446 | if (!found) |
| 447 | error (_("No skiplist entries found with number %s."), arg); |
| 448 | } |
| 449 | |
| 450 | static void |
| 451 | skip_disable_command (const char *arg, int from_tty) |
| 452 | { |
| 453 | bool found = false; |
| 454 | |
| 455 | for (skiplist_entry &e : skiplist_entries) |
| 456 | if (arg == NULL || number_is_in_list (arg, e.number ())) |
| 457 | { |
| 458 | e.disable (); |
| 459 | found = true; |
| 460 | } |
| 461 | |
| 462 | if (!found) |
| 463 | error (_("No skiplist entries found with number %s."), arg); |
| 464 | } |
| 465 | |
| 466 | static void |
| 467 | skip_delete_command (const char *arg, int from_tty) |
| 468 | { |
| 469 | bool found = false; |
| 470 | |
| 471 | for (auto it = skiplist_entries.begin (), |
| 472 | end = skiplist_entries.end (); |
| 473 | it != end;) |
| 474 | { |
| 475 | const skiplist_entry &e = *it; |
| 476 | |
| 477 | if (arg == NULL || number_is_in_list (arg, e.number ())) |
| 478 | { |
| 479 | it = skiplist_entries.erase (it); |
| 480 | found = true; |
| 481 | } |
| 482 | else |
| 483 | ++it; |
| 484 | } |
| 485 | |
| 486 | if (!found) |
| 487 | error (_("No skiplist entries found with number %s."), arg); |
| 488 | } |
| 489 | |
| 490 | bool |
| 491 | skiplist_entry::do_skip_file_p (const symtab_and_line &function_sal) const |
| 492 | { |
| 493 | if (debug_skip) |
| 494 | fprintf_unfiltered (gdb_stdlog, |
| 495 | "skip: checking if file %s matches non-glob %s...", |
| 496 | function_sal.symtab->filename, m_file.c_str ()); |
| 497 | |
| 498 | bool result; |
| 499 | |
| 500 | /* Check first sole SYMTAB->FILENAME. It may not be a substring of |
| 501 | symtab_to_fullname as it may contain "./" etc. */ |
| 502 | if (compare_filenames_for_search (function_sal.symtab->filename, |
| 503 | m_file.c_str ())) |
| 504 | result = true; |
| 505 | |
| 506 | /* Before we invoke realpath, which can get expensive when many |
| 507 | files are involved, do a quick comparison of the basenames. */ |
| 508 | else if (!basenames_may_differ |
| 509 | && filename_cmp (lbasename (function_sal.symtab->filename), |
| 510 | lbasename (m_file.c_str ())) != 0) |
| 511 | result = false; |
| 512 | else |
| 513 | { |
| 514 | /* Note: symtab_to_fullname caches its result, thus we don't have to. */ |
| 515 | const char *fullname = symtab_to_fullname (function_sal.symtab); |
| 516 | |
| 517 | result = compare_filenames_for_search (fullname, m_file.c_str ()); |
| 518 | } |
| 519 | |
| 520 | if (debug_skip) |
| 521 | fprintf_unfiltered (gdb_stdlog, result ? "yes.\n" : "no.\n"); |
| 522 | |
| 523 | return result; |
| 524 | } |
| 525 | |
| 526 | bool |
| 527 | skiplist_entry::do_skip_gfile_p (const symtab_and_line &function_sal) const |
| 528 | { |
| 529 | if (debug_skip) |
| 530 | fprintf_unfiltered (gdb_stdlog, |
| 531 | "skip: checking if file %s matches glob %s...", |
| 532 | function_sal.symtab->filename, m_file.c_str ()); |
| 533 | |
| 534 | bool result; |
| 535 | |
| 536 | /* Check first sole SYMTAB->FILENAME. It may not be a substring of |
| 537 | symtab_to_fullname as it may contain "./" etc. */ |
| 538 | if (gdb_filename_fnmatch (m_file.c_str (), function_sal.symtab->filename, |
| 539 | FNM_FILE_NAME | FNM_NOESCAPE) == 0) |
| 540 | result = true; |
| 541 | |
| 542 | /* Before we invoke symtab_to_fullname, which is expensive, do a quick |
| 543 | comparison of the basenames. |
| 544 | Note that we assume that lbasename works with glob-style patterns. |
| 545 | If the basename of the glob pattern is something like "*.c" then this |
| 546 | isn't much of a win. Oh well. */ |
| 547 | else if (!basenames_may_differ |
| 548 | && gdb_filename_fnmatch (lbasename (m_file.c_str ()), |
| 549 | lbasename (function_sal.symtab->filename), |
| 550 | FNM_FILE_NAME | FNM_NOESCAPE) != 0) |
| 551 | result = false; |
| 552 | else |
| 553 | { |
| 554 | /* Note: symtab_to_fullname caches its result, thus we don't have to. */ |
| 555 | const char *fullname = symtab_to_fullname (function_sal.symtab); |
| 556 | |
| 557 | result = compare_glob_filenames_for_search (fullname, m_file.c_str ()); |
| 558 | } |
| 559 | |
| 560 | if (debug_skip) |
| 561 | fprintf_unfiltered (gdb_stdlog, result ? "yes.\n" : "no.\n"); |
| 562 | |
| 563 | return result; |
| 564 | } |
| 565 | |
| 566 | bool |
| 567 | skiplist_entry::skip_file_p (const symtab_and_line &function_sal) const |
| 568 | { |
| 569 | if (m_file.empty ()) |
| 570 | return false; |
| 571 | |
| 572 | if (function_sal.symtab == NULL) |
| 573 | return false; |
| 574 | |
| 575 | if (m_file_is_glob) |
| 576 | return do_skip_gfile_p (function_sal); |
| 577 | else |
| 578 | return do_skip_file_p (function_sal); |
| 579 | } |
| 580 | |
| 581 | bool |
| 582 | skiplist_entry::skip_function_p (const char *function_name) const |
| 583 | { |
| 584 | if (m_function.empty ()) |
| 585 | return false; |
| 586 | |
| 587 | bool result; |
| 588 | |
| 589 | if (m_function_is_regexp) |
| 590 | { |
| 591 | if (debug_skip) |
| 592 | fprintf_unfiltered (gdb_stdlog, |
| 593 | "skip: checking if function %s matches regex %s...", |
| 594 | function_name, m_function.c_str ()); |
| 595 | |
| 596 | gdb_assert (m_compiled_function_regexp); |
| 597 | result |
| 598 | = (m_compiled_function_regexp->exec (function_name, 0, NULL, 0) == 0); |
| 599 | } |
| 600 | else |
| 601 | { |
| 602 | if (debug_skip) |
| 603 | fprintf_unfiltered (gdb_stdlog, |
| 604 | ("skip: checking if function %s matches non-regex " |
| 605 | "%s..."), |
| 606 | function_name, m_function.c_str ()); |
| 607 | result = (strcmp_iw (function_name, m_function.c_str ()) == 0); |
| 608 | } |
| 609 | |
| 610 | if (debug_skip) |
| 611 | fprintf_unfiltered (gdb_stdlog, result ? "yes.\n" : "no.\n"); |
| 612 | |
| 613 | return result; |
| 614 | } |
| 615 | |
| 616 | /* See skip.h. */ |
| 617 | |
| 618 | bool |
| 619 | function_name_is_marked_for_skip (const char *function_name, |
| 620 | const symtab_and_line &function_sal) |
| 621 | { |
| 622 | if (function_name == NULL) |
| 623 | return false; |
| 624 | |
| 625 | for (const skiplist_entry &e : skiplist_entries) |
| 626 | { |
| 627 | if (!e.enabled ()) |
| 628 | continue; |
| 629 | |
| 630 | bool skip_by_file = e.skip_file_p (function_sal); |
| 631 | bool skip_by_function = e.skip_function_p (function_name); |
| 632 | |
| 633 | /* If both file and function must match, make sure we don't errantly |
| 634 | exit if only one of them match. */ |
| 635 | if (!e.file ().empty () && !e.function ().empty ()) |
| 636 | { |
| 637 | if (skip_by_file && skip_by_function) |
| 638 | return true; |
| 639 | } |
| 640 | /* Only one of file/function is specified. */ |
| 641 | else if (skip_by_file || skip_by_function) |
| 642 | return true; |
| 643 | } |
| 644 | |
| 645 | return false; |
| 646 | } |
| 647 | |
| 648 | /* Completer for skip numbers. */ |
| 649 | |
| 650 | static void |
| 651 | complete_skip_number (cmd_list_element *cmd, |
| 652 | completion_tracker &completer, |
| 653 | const char *text, const char *word) |
| 654 | { |
| 655 | size_t word_len = strlen (word); |
| 656 | |
| 657 | for (const skiplist_entry &entry : skiplist_entries) |
| 658 | { |
| 659 | gdb::unique_xmalloc_ptr<char> name (xstrprintf ("%d", entry.number ())); |
| 660 | if (strncmp (word, name.get (), word_len) == 0) |
| 661 | completer.add_completion (std::move (name)); |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | void _initialize_step_skip (); |
| 666 | void |
| 667 | _initialize_step_skip () |
| 668 | { |
| 669 | static struct cmd_list_element *skiplist = NULL; |
| 670 | struct cmd_list_element *c; |
| 671 | |
| 672 | add_prefix_cmd ("skip", class_breakpoint, skip_command, _("\ |
| 673 | Ignore a function while stepping.\n\ |
| 674 | \n\ |
| 675 | Usage: skip [FUNCTION-NAME]\n\ |
| 676 | skip [FILE-SPEC] [FUNCTION-SPEC]\n\ |
| 677 | If no arguments are given, ignore the current function.\n\ |
| 678 | \n\ |
| 679 | FILE-SPEC is one of:\n\ |
| 680 | -fi|-file FILE-NAME\n\ |
| 681 | -gfi|-gfile GLOB-FILE-PATTERN\n\ |
| 682 | FUNCTION-SPEC is one of:\n\ |
| 683 | -fu|-function FUNCTION-NAME\n\ |
| 684 | -rfu|-rfunction FUNCTION-NAME-REGULAR-EXPRESSION"), |
| 685 | &skiplist, "skip ", 1, &cmdlist); |
| 686 | |
| 687 | c = add_cmd ("file", class_breakpoint, skip_file_command, _("\ |
| 688 | Ignore a file while stepping.\n\ |
| 689 | Usage: skip file [FILE-NAME]\n\ |
| 690 | If no filename is given, ignore the current file."), |
| 691 | &skiplist); |
| 692 | set_cmd_completer (c, filename_completer); |
| 693 | |
| 694 | c = add_cmd ("function", class_breakpoint, skip_function_command, _("\ |
| 695 | Ignore a function while stepping.\n\ |
| 696 | Usage: skip function [FUNCTION-NAME]\n\ |
| 697 | If no function name is given, skip the current function."), |
| 698 | &skiplist); |
| 699 | set_cmd_completer (c, location_completer); |
| 700 | |
| 701 | c = add_cmd ("enable", class_breakpoint, skip_enable_command, _("\ |
| 702 | Enable skip entries.\n\ |
| 703 | Usage: skip enable [NUMBER | RANGE]...\n\ |
| 704 | You can specify numbers (e.g. \"skip enable 1 3\"),\n\ |
| 705 | ranges (e.g. \"skip enable 4-8\"), or both (e.g. \"skip enable 1 3 4-8\").\n\n\ |
| 706 | If you don't specify any numbers or ranges, we'll enable all skip entries."), |
| 707 | &skiplist); |
| 708 | set_cmd_completer (c, complete_skip_number); |
| 709 | |
| 710 | c = add_cmd ("disable", class_breakpoint, skip_disable_command, _("\ |
| 711 | Disable skip entries.\n\ |
| 712 | Usage: skip disable [NUMBER | RANGE]...\n\ |
| 713 | You can specify numbers (e.g. \"skip disable 1 3\"),\n\ |
| 714 | ranges (e.g. \"skip disable 4-8\"), or both (e.g. \"skip disable 1 3 4-8\").\n\n\ |
| 715 | If you don't specify any numbers or ranges, we'll disable all skip entries."), |
| 716 | &skiplist); |
| 717 | set_cmd_completer (c, complete_skip_number); |
| 718 | |
| 719 | c = add_cmd ("delete", class_breakpoint, skip_delete_command, _("\ |
| 720 | Delete skip entries.\n\ |
| 721 | Usage: skip delete [NUMBER | RANGES]...\n\ |
| 722 | You can specify numbers (e.g. \"skip delete 1 3\"),\n\ |
| 723 | ranges (e.g. \"skip delete 4-8\"), or both (e.g. \"skip delete 1 3 4-8\").\n\n\ |
| 724 | If you don't specify any numbers or ranges, we'll delete all skip entries."), |
| 725 | &skiplist); |
| 726 | set_cmd_completer (c, complete_skip_number); |
| 727 | |
| 728 | add_info ("skip", info_skip_command, _("\ |
| 729 | Display the status of skips.\n\ |
| 730 | Usage: info skip [NUMBER | RANGES]...\n\ |
| 731 | You can specify numbers (e.g. \"info skip 1 3\"), \n\ |
| 732 | ranges (e.g. \"info skip 4-8\"), or both (e.g. \"info skip 1 3 4-8\").\n\n\ |
| 733 | If you don't specify any numbers or ranges, we'll show all skips.")); |
| 734 | set_cmd_completer (c, complete_skip_number); |
| 735 | |
| 736 | add_setshow_boolean_cmd ("skip", class_maintenance, |
| 737 | &debug_skip, _("\ |
| 738 | Set whether to print the debug output about skipping files and functions."), |
| 739 | _("\ |
| 740 | Show whether the debug output about skipping files and functions is printed."), |
| 741 | _("\ |
| 742 | When non-zero, debug output about skipping files and functions is displayed."), |
| 743 | NULL, NULL, |
| 744 | &setdebuglist, &showdebuglist); |
| 745 | } |