| 1 | /* GDB CLI commands. |
| 2 | |
| 3 | Copyright (C) 2000-2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "arch-utils.h" |
| 22 | #include "readline/tilde.h" |
| 23 | #include "completer.h" |
| 24 | #include "target.h" /* For baud_rate, remote_debug and remote_timeout. */ |
| 25 | #include "gdbsupport/gdb_wait.h" /* For shell escape implementation. */ |
| 26 | #include "gdbcmd.h" |
| 27 | #include "gdb_regex.h" /* Used by apropos_command. */ |
| 28 | #include "gdb_vfork.h" |
| 29 | #include "linespec.h" |
| 30 | #include "expression.h" |
| 31 | #include "frame.h" |
| 32 | #include "value.h" |
| 33 | #include "language.h" |
| 34 | #include "filenames.h" /* For DOSish file names. */ |
| 35 | #include "objfiles.h" |
| 36 | #include "source.h" |
| 37 | #include "disasm.h" |
| 38 | #include "tracepoint.h" |
| 39 | #include "gdbsupport/filestuff.h" |
| 40 | #include "location.h" |
| 41 | #include "block.h" |
| 42 | |
| 43 | #include "ui-out.h" |
| 44 | #include "interps.h" |
| 45 | |
| 46 | #include "top.h" |
| 47 | #include "cli/cli-decode.h" |
| 48 | #include "cli/cli-script.h" |
| 49 | #include "cli/cli-setshow.h" |
| 50 | #include "cli/cli-cmds.h" |
| 51 | #include "cli/cli-style.h" |
| 52 | #include "cli/cli-utils.h" |
| 53 | |
| 54 | #include "extension.h" |
| 55 | #include "gdbsupport/pathstuff.h" |
| 56 | |
| 57 | #ifdef TUI |
| 58 | #include "tui/tui.h" /* For tui_active et.al. */ |
| 59 | #endif |
| 60 | |
| 61 | #include <fcntl.h> |
| 62 | #include <algorithm> |
| 63 | #include <string> |
| 64 | |
| 65 | /* Prototypes for local utility functions */ |
| 66 | |
| 67 | static void print_sal_location (const symtab_and_line &sal); |
| 68 | |
| 69 | static void ambiguous_line_spec (gdb::array_view<const symtab_and_line> sals, |
| 70 | const char *format, ...) |
| 71 | ATTRIBUTE_PRINTF (2, 3); |
| 72 | |
| 73 | static void filter_sals (std::vector<symtab_and_line> &); |
| 74 | |
| 75 | \f |
| 76 | /* See cli-cmds.h. */ |
| 77 | unsigned int max_user_call_depth; |
| 78 | |
| 79 | /* Define all cmd_list_elements. */ |
| 80 | |
| 81 | /* Chain containing all defined commands. */ |
| 82 | |
| 83 | struct cmd_list_element *cmdlist; |
| 84 | |
| 85 | /* Chain containing all defined info subcommands. */ |
| 86 | |
| 87 | struct cmd_list_element *infolist; |
| 88 | |
| 89 | /* Chain containing all defined enable subcommands. */ |
| 90 | |
| 91 | struct cmd_list_element *enablelist; |
| 92 | |
| 93 | /* Chain containing all defined disable subcommands. */ |
| 94 | |
| 95 | struct cmd_list_element *disablelist; |
| 96 | |
| 97 | /* Chain containing all defined stop subcommands. */ |
| 98 | |
| 99 | struct cmd_list_element *stoplist; |
| 100 | |
| 101 | /* Chain containing all defined delete subcommands. */ |
| 102 | |
| 103 | struct cmd_list_element *deletelist; |
| 104 | |
| 105 | /* Chain containing all defined detach subcommands. */ |
| 106 | |
| 107 | struct cmd_list_element *detachlist; |
| 108 | |
| 109 | /* Chain containing all defined kill subcommands. */ |
| 110 | |
| 111 | struct cmd_list_element *killlist; |
| 112 | |
| 113 | /* Chain containing all defined set subcommands */ |
| 114 | |
| 115 | struct cmd_list_element *setlist; |
| 116 | |
| 117 | /* Chain containing all defined unset subcommands */ |
| 118 | |
| 119 | struct cmd_list_element *unsetlist; |
| 120 | |
| 121 | /* Chain containing all defined show subcommands. */ |
| 122 | |
| 123 | struct cmd_list_element *showlist; |
| 124 | |
| 125 | /* Chain containing all defined \"set history\". */ |
| 126 | |
| 127 | struct cmd_list_element *sethistlist; |
| 128 | |
| 129 | /* Chain containing all defined \"show history\". */ |
| 130 | |
| 131 | struct cmd_list_element *showhistlist; |
| 132 | |
| 133 | /* Chain containing all defined \"unset history\". */ |
| 134 | |
| 135 | struct cmd_list_element *unsethistlist; |
| 136 | |
| 137 | /* Chain containing all defined maintenance subcommands. */ |
| 138 | |
| 139 | struct cmd_list_element *maintenancelist; |
| 140 | |
| 141 | /* Chain containing all defined "maintenance info" subcommands. */ |
| 142 | |
| 143 | struct cmd_list_element *maintenanceinfolist; |
| 144 | |
| 145 | /* Chain containing all defined "maintenance print" subcommands. */ |
| 146 | |
| 147 | struct cmd_list_element *maintenanceprintlist; |
| 148 | |
| 149 | /* Chain containing all defined "maintenance check" subcommands. */ |
| 150 | |
| 151 | struct cmd_list_element *maintenancechecklist; |
| 152 | |
| 153 | struct cmd_list_element *setprintlist; |
| 154 | |
| 155 | struct cmd_list_element *showprintlist; |
| 156 | |
| 157 | struct cmd_list_element *setdebuglist; |
| 158 | |
| 159 | struct cmd_list_element *showdebuglist; |
| 160 | |
| 161 | struct cmd_list_element *setchecklist; |
| 162 | |
| 163 | struct cmd_list_element *showchecklist; |
| 164 | |
| 165 | /* Command tracing state. */ |
| 166 | |
| 167 | int source_verbose = 0; |
| 168 | bool trace_commands = false; |
| 169 | \f |
| 170 | /* 'script-extension' option support. */ |
| 171 | |
| 172 | static const char script_ext_off[] = "off"; |
| 173 | static const char script_ext_soft[] = "soft"; |
| 174 | static const char script_ext_strict[] = "strict"; |
| 175 | |
| 176 | static const char *const script_ext_enums[] = { |
| 177 | script_ext_off, |
| 178 | script_ext_soft, |
| 179 | script_ext_strict, |
| 180 | NULL |
| 181 | }; |
| 182 | |
| 183 | static const char *script_ext_mode = script_ext_soft; |
| 184 | \f |
| 185 | /* Utility used everywhere when at least one argument is needed and |
| 186 | none is supplied. */ |
| 187 | |
| 188 | void |
| 189 | error_no_arg (const char *why) |
| 190 | { |
| 191 | error (_("Argument required (%s)."), why); |
| 192 | } |
| 193 | |
| 194 | /* This implements the "info" prefix command. Normally such commands |
| 195 | are automatically handled by add_basic_prefix_cmd, but in this case |
| 196 | a separate command is used so that it can be hooked into by |
| 197 | gdb-gdb.gdb. */ |
| 198 | |
| 199 | static void |
| 200 | info_command (const char *arg, int from_tty) |
| 201 | { |
| 202 | help_list (infolist, "info ", all_commands, gdb_stdout); |
| 203 | } |
| 204 | |
| 205 | /* See cli/cli-cmds.h. */ |
| 206 | |
| 207 | void |
| 208 | with_command_1 (const char *set_cmd_prefix, |
| 209 | cmd_list_element *setlist, const char *args, int from_tty) |
| 210 | { |
| 211 | if (args == nullptr) |
| 212 | error (_("Missing arguments.")); |
| 213 | |
| 214 | const char *delim = strstr (args, "--"); |
| 215 | const char *nested_cmd = nullptr; |
| 216 | |
| 217 | if (delim == args) |
| 218 | error (_("Missing setting before '--' delimiter")); |
| 219 | |
| 220 | if (delim == nullptr || *skip_spaces (&delim[2]) == '\0') |
| 221 | nested_cmd = repeat_previous (); |
| 222 | |
| 223 | cmd_list_element *set_cmd = lookup_cmd (&args, setlist, set_cmd_prefix, |
| 224 | /*allow_unknown=*/ 0, |
| 225 | /*ignore_help_classes=*/ 1); |
| 226 | gdb_assert (set_cmd != nullptr); |
| 227 | |
| 228 | if (set_cmd->var == nullptr) |
| 229 | error (_("Cannot use this setting with the \"with\" command")); |
| 230 | |
| 231 | std::string temp_value |
| 232 | = (delim == nullptr ? args : std::string (args, delim - args)); |
| 233 | |
| 234 | if (nested_cmd == nullptr) |
| 235 | nested_cmd = skip_spaces (delim + 2); |
| 236 | |
| 237 | std::string org_value = get_setshow_command_value_string (set_cmd); |
| 238 | |
| 239 | /* Tweak the setting to the new temporary value. */ |
| 240 | do_set_command (temp_value.c_str (), from_tty, set_cmd); |
| 241 | |
| 242 | try |
| 243 | { |
| 244 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
| 245 | |
| 246 | /* Execute the nested command. */ |
| 247 | execute_command (nested_cmd, from_tty); |
| 248 | } |
| 249 | catch (const gdb_exception &ex) |
| 250 | { |
| 251 | /* Restore the setting and rethrow. If restoring the setting |
| 252 | throws, swallow the new exception and warn. There's nothing |
| 253 | else we can reasonably do. */ |
| 254 | try |
| 255 | { |
| 256 | do_set_command (org_value.c_str (), from_tty, set_cmd); |
| 257 | } |
| 258 | catch (const gdb_exception &ex2) |
| 259 | { |
| 260 | warning (_("Couldn't restore setting: %s"), ex2.what ()); |
| 261 | } |
| 262 | |
| 263 | throw; |
| 264 | } |
| 265 | |
| 266 | /* Restore the setting. */ |
| 267 | do_set_command (org_value.c_str (), from_tty, set_cmd); |
| 268 | } |
| 269 | |
| 270 | /* See cli/cli-cmds.h. */ |
| 271 | |
| 272 | void |
| 273 | with_command_completer_1 (const char *set_cmd_prefix, |
| 274 | completion_tracker &tracker, |
| 275 | const char *text) |
| 276 | { |
| 277 | tracker.set_use_custom_word_point (true); |
| 278 | |
| 279 | const char *delim = strstr (text, "--"); |
| 280 | |
| 281 | /* If we're still not past the "--" delimiter, complete the "with" |
| 282 | command as if it was a "set" command. */ |
| 283 | if (delim == text |
| 284 | || delim == nullptr |
| 285 | || !isspace (delim[-1]) |
| 286 | || !(isspace (delim[2]) || delim[2] == '\0')) |
| 287 | { |
| 288 | std::string new_text = std::string (set_cmd_prefix) + text; |
| 289 | tracker.advance_custom_word_point_by (-(int) strlen (set_cmd_prefix)); |
| 290 | complete_nested_command_line (tracker, new_text.c_str ()); |
| 291 | return; |
| 292 | } |
| 293 | |
| 294 | /* We're past the "--" delimiter. Complete on the sub command. */ |
| 295 | const char *nested_cmd = skip_spaces (delim + 2); |
| 296 | tracker.advance_custom_word_point_by (nested_cmd - text); |
| 297 | complete_nested_command_line (tracker, nested_cmd); |
| 298 | } |
| 299 | |
| 300 | /* The "with" command. */ |
| 301 | |
| 302 | static void |
| 303 | with_command (const char *args, int from_tty) |
| 304 | { |
| 305 | with_command_1 ("set ", setlist, args, from_tty); |
| 306 | } |
| 307 | |
| 308 | /* "with" command completer. */ |
| 309 | |
| 310 | static void |
| 311 | with_command_completer (struct cmd_list_element *ignore, |
| 312 | completion_tracker &tracker, |
| 313 | const char *text, const char * /*word*/) |
| 314 | { |
| 315 | with_command_completer_1 ("set ", tracker, text); |
| 316 | } |
| 317 | |
| 318 | \f |
| 319 | /* Provide documentation on command or list given by COMMAND. FROM_TTY |
| 320 | is ignored. */ |
| 321 | |
| 322 | static void |
| 323 | help_command (const char *command, int from_tty) |
| 324 | { |
| 325 | help_cmd (command, gdb_stdout); |
| 326 | } |
| 327 | \f |
| 328 | |
| 329 | /* Note: The "complete" command is used by Emacs to implement completion. |
| 330 | [Is that why this function writes output with *_unfiltered?] */ |
| 331 | |
| 332 | static void |
| 333 | complete_command (const char *arg, int from_tty) |
| 334 | { |
| 335 | dont_repeat (); |
| 336 | |
| 337 | if (max_completions == 0) |
| 338 | { |
| 339 | /* Only print this for non-mi frontends. An MI frontend may not |
| 340 | be able to handle this. */ |
| 341 | if (!current_uiout->is_mi_like_p ()) |
| 342 | { |
| 343 | printf_unfiltered (_("max-completions is zero," |
| 344 | " completion is disabled.\n")); |
| 345 | } |
| 346 | return; |
| 347 | } |
| 348 | |
| 349 | if (arg == NULL) |
| 350 | arg = ""; |
| 351 | |
| 352 | int quote_char = '\0'; |
| 353 | const char *word; |
| 354 | |
| 355 | completion_result result = complete (arg, &word, "e_char); |
| 356 | |
| 357 | if (result.number_matches != 0) |
| 358 | { |
| 359 | std::string arg_prefix (arg, word - arg); |
| 360 | |
| 361 | if (result.number_matches == 1) |
| 362 | printf_unfiltered ("%s%s\n", arg_prefix.c_str (), result.match_list[0]); |
| 363 | else |
| 364 | { |
| 365 | result.sort_match_list (); |
| 366 | |
| 367 | for (size_t i = 0; i < result.number_matches; i++) |
| 368 | { |
| 369 | printf_unfiltered ("%s%s", |
| 370 | arg_prefix.c_str (), |
| 371 | result.match_list[i + 1]); |
| 372 | if (quote_char) |
| 373 | printf_unfiltered ("%c", quote_char); |
| 374 | printf_unfiltered ("\n"); |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | if (result.number_matches == max_completions) |
| 379 | { |
| 380 | /* ARG_PREFIX and WORD are included in the output so that emacs |
| 381 | will include the message in the output. */ |
| 382 | printf_unfiltered (_("%s%s %s\n"), |
| 383 | arg_prefix.c_str (), word, |
| 384 | get_max_completions_reached_message ()); |
| 385 | } |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | int |
| 390 | is_complete_command (struct cmd_list_element *c) |
| 391 | { |
| 392 | return cmd_cfunc_eq (c, complete_command); |
| 393 | } |
| 394 | |
| 395 | static void |
| 396 | show_version (const char *args, int from_tty) |
| 397 | { |
| 398 | print_gdb_version (gdb_stdout, true); |
| 399 | printf_filtered ("\n"); |
| 400 | } |
| 401 | |
| 402 | static void |
| 403 | show_configuration (const char *args, int from_tty) |
| 404 | { |
| 405 | print_gdb_configuration (gdb_stdout); |
| 406 | } |
| 407 | |
| 408 | /* Handle the quit command. */ |
| 409 | |
| 410 | void |
| 411 | quit_command (const char *args, int from_tty) |
| 412 | { |
| 413 | int exit_code = 0; |
| 414 | |
| 415 | /* An optional expression may be used to cause gdb to terminate with |
| 416 | the value of that expression. */ |
| 417 | if (args) |
| 418 | { |
| 419 | struct value *val = parse_and_eval (args); |
| 420 | |
| 421 | exit_code = (int) value_as_long (val); |
| 422 | } |
| 423 | |
| 424 | if (!quit_confirm ()) |
| 425 | error (_("Not confirmed.")); |
| 426 | |
| 427 | query_if_trace_running (from_tty); |
| 428 | |
| 429 | quit_force (args ? &exit_code : NULL, from_tty); |
| 430 | } |
| 431 | |
| 432 | static void |
| 433 | pwd_command (const char *args, int from_tty) |
| 434 | { |
| 435 | if (args) |
| 436 | error (_("The \"pwd\" command does not take an argument: %s"), args); |
| 437 | |
| 438 | gdb::unique_xmalloc_ptr<char> cwd (getcwd (NULL, 0)); |
| 439 | |
| 440 | if (cwd == NULL) |
| 441 | error (_("Error finding name of working directory: %s"), |
| 442 | safe_strerror (errno)); |
| 443 | |
| 444 | if (strcmp (cwd.get (), current_directory) != 0) |
| 445 | printf_unfiltered (_("Working directory %ps\n (canonically %ps).\n"), |
| 446 | styled_string (file_name_style.style (), |
| 447 | current_directory), |
| 448 | styled_string (file_name_style.style (), cwd.get ())); |
| 449 | else |
| 450 | printf_unfiltered (_("Working directory %ps.\n"), |
| 451 | styled_string (file_name_style.style (), |
| 452 | current_directory)); |
| 453 | } |
| 454 | |
| 455 | void |
| 456 | cd_command (const char *dir, int from_tty) |
| 457 | { |
| 458 | int len; |
| 459 | /* Found something other than leading repetitions of "/..". */ |
| 460 | int found_real_path; |
| 461 | char *p; |
| 462 | |
| 463 | /* If the new directory is absolute, repeat is a no-op; if relative, |
| 464 | repeat might be useful but is more likely to be a mistake. */ |
| 465 | dont_repeat (); |
| 466 | |
| 467 | gdb::unique_xmalloc_ptr<char> dir_holder |
| 468 | (tilde_expand (dir != NULL ? dir : "~")); |
| 469 | dir = dir_holder.get (); |
| 470 | |
| 471 | if (chdir (dir) < 0) |
| 472 | perror_with_name (dir); |
| 473 | |
| 474 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| 475 | /* There's too much mess with DOSish names like "d:", "d:.", |
| 476 | "d:./foo" etc. Instead of having lots of special #ifdef'ed code, |
| 477 | simply get the canonicalized name of the current directory. */ |
| 478 | gdb::unique_xmalloc_ptr<char> cwd (getcwd (NULL, 0)); |
| 479 | dir = cwd.get (); |
| 480 | #endif |
| 481 | |
| 482 | len = strlen (dir); |
| 483 | if (IS_DIR_SEPARATOR (dir[len - 1])) |
| 484 | { |
| 485 | /* Remove the trailing slash unless this is a root directory |
| 486 | (including a drive letter on non-Unix systems). */ |
| 487 | if (!(len == 1) /* "/" */ |
| 488 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| 489 | && !(len == 3 && dir[1] == ':') /* "d:/" */ |
| 490 | #endif |
| 491 | ) |
| 492 | len--; |
| 493 | } |
| 494 | |
| 495 | dir_holder.reset (savestring (dir, len)); |
| 496 | if (IS_ABSOLUTE_PATH (dir_holder.get ())) |
| 497 | { |
| 498 | xfree (current_directory); |
| 499 | current_directory = dir_holder.release (); |
| 500 | } |
| 501 | else |
| 502 | { |
| 503 | if (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])) |
| 504 | current_directory = concat (current_directory, dir_holder.get (), |
| 505 | (char *) NULL); |
| 506 | else |
| 507 | current_directory = concat (current_directory, SLASH_STRING, |
| 508 | dir_holder.get (), (char *) NULL); |
| 509 | } |
| 510 | |
| 511 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ |
| 512 | |
| 513 | found_real_path = 0; |
| 514 | for (p = current_directory; *p;) |
| 515 | { |
| 516 | if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' |
| 517 | && (p[2] == 0 || IS_DIR_SEPARATOR (p[2]))) |
| 518 | memmove (p, p + 2, strlen (p + 2) + 1); |
| 519 | else if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' && p[2] == '.' |
| 520 | && (p[3] == 0 || IS_DIR_SEPARATOR (p[3]))) |
| 521 | { |
| 522 | if (found_real_path) |
| 523 | { |
| 524 | /* Search backwards for the directory just before the "/.." |
| 525 | and obliterate it and the "/..". */ |
| 526 | char *q = p; |
| 527 | |
| 528 | while (q != current_directory && !IS_DIR_SEPARATOR (q[-1])) |
| 529 | --q; |
| 530 | |
| 531 | if (q == current_directory) |
| 532 | /* current_directory is |
| 533 | a relative pathname ("can't happen"--leave it alone). */ |
| 534 | ++p; |
| 535 | else |
| 536 | { |
| 537 | memmove (q - 1, p + 3, strlen (p + 3) + 1); |
| 538 | p = q - 1; |
| 539 | } |
| 540 | } |
| 541 | else |
| 542 | /* We are dealing with leading repetitions of "/..", for |
| 543 | example "/../..", which is the Mach super-root. */ |
| 544 | p += 3; |
| 545 | } |
| 546 | else |
| 547 | { |
| 548 | found_real_path = 1; |
| 549 | ++p; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | forget_cached_source_info (); |
| 554 | |
| 555 | if (from_tty) |
| 556 | pwd_command ((char *) 0, 1); |
| 557 | } |
| 558 | \f |
| 559 | /* Show the current value of the 'script-extension' option. */ |
| 560 | |
| 561 | static void |
| 562 | show_script_ext_mode (struct ui_file *file, int from_tty, |
| 563 | struct cmd_list_element *c, const char *value) |
| 564 | { |
| 565 | fprintf_filtered (file, |
| 566 | _("Script filename extension recognition is \"%s\".\n"), |
| 567 | value); |
| 568 | } |
| 569 | |
| 570 | /* Try to open SCRIPT_FILE. |
| 571 | If successful, the full path name is stored in *FULL_PATHP, |
| 572 | and the stream is returned. |
| 573 | If not successful, return NULL; errno is set for the last file |
| 574 | we tried to open. |
| 575 | |
| 576 | If SEARCH_PATH is non-zero, and the file isn't found in cwd, |
| 577 | search for it in the source search path. */ |
| 578 | |
| 579 | gdb::optional<open_script> |
| 580 | find_and_open_script (const char *script_file, int search_path) |
| 581 | { |
| 582 | int fd; |
| 583 | openp_flags search_flags = OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH; |
| 584 | gdb::optional<open_script> opened; |
| 585 | |
| 586 | gdb::unique_xmalloc_ptr<char> file (tilde_expand (script_file)); |
| 587 | |
| 588 | if (search_path) |
| 589 | search_flags |= OPF_SEARCH_IN_PATH; |
| 590 | |
| 591 | /* Search for and open 'file' on the search path used for source |
| 592 | files. Put the full location in *FULL_PATHP. */ |
| 593 | gdb::unique_xmalloc_ptr<char> full_path; |
| 594 | fd = openp (source_path, search_flags, |
| 595 | file.get (), O_RDONLY, &full_path); |
| 596 | |
| 597 | if (fd == -1) |
| 598 | return opened; |
| 599 | |
| 600 | FILE *result = fdopen (fd, FOPEN_RT); |
| 601 | if (result == NULL) |
| 602 | { |
| 603 | int save_errno = errno; |
| 604 | |
| 605 | close (fd); |
| 606 | errno = save_errno; |
| 607 | } |
| 608 | else |
| 609 | opened.emplace (gdb_file_up (result), std::move (full_path)); |
| 610 | |
| 611 | return opened; |
| 612 | } |
| 613 | |
| 614 | /* Load script FILE, which has already been opened as STREAM. |
| 615 | FILE_TO_OPEN is the form of FILE to use if one needs to open the file. |
| 616 | This is provided as FILE may have been found via the source search path. |
| 617 | An important thing to note here is that FILE may be a symlink to a file |
| 618 | with a different or non-existing suffix, and thus one cannot infer the |
| 619 | extension language from FILE_TO_OPEN. */ |
| 620 | |
| 621 | static void |
| 622 | source_script_from_stream (FILE *stream, const char *file, |
| 623 | const char *file_to_open) |
| 624 | { |
| 625 | if (script_ext_mode != script_ext_off) |
| 626 | { |
| 627 | const struct extension_language_defn *extlang |
| 628 | = get_ext_lang_of_file (file); |
| 629 | |
| 630 | if (extlang != NULL) |
| 631 | { |
| 632 | if (ext_lang_present_p (extlang)) |
| 633 | { |
| 634 | script_sourcer_func *sourcer |
| 635 | = ext_lang_script_sourcer (extlang); |
| 636 | |
| 637 | gdb_assert (sourcer != NULL); |
| 638 | sourcer (extlang, stream, file_to_open); |
| 639 | return; |
| 640 | } |
| 641 | else if (script_ext_mode == script_ext_soft) |
| 642 | { |
| 643 | /* Assume the file is a gdb script. |
| 644 | This is handled below. */ |
| 645 | } |
| 646 | else |
| 647 | throw_ext_lang_unsupported (extlang); |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | script_from_file (stream, file); |
| 652 | } |
| 653 | |
| 654 | /* Worker to perform the "source" command. |
| 655 | Load script FILE. |
| 656 | If SEARCH_PATH is non-zero, and the file isn't found in cwd, |
| 657 | search for it in the source search path. */ |
| 658 | |
| 659 | static void |
| 660 | source_script_with_search (const char *file, int from_tty, int search_path) |
| 661 | { |
| 662 | |
| 663 | if (file == NULL || *file == 0) |
| 664 | error (_("source command requires file name of file to source.")); |
| 665 | |
| 666 | gdb::optional<open_script> opened = find_and_open_script (file, search_path); |
| 667 | if (!opened) |
| 668 | { |
| 669 | /* The script wasn't found, or was otherwise inaccessible. |
| 670 | If the source command was invoked interactively, throw an |
| 671 | error. Otherwise (e.g. if it was invoked by a script), |
| 672 | just emit a warning, rather than cause an error. */ |
| 673 | if (from_tty) |
| 674 | perror_with_name (file); |
| 675 | else |
| 676 | { |
| 677 | perror_warning_with_name (file); |
| 678 | return; |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | /* The python support reopens the file, so we need to pass full_path here |
| 683 | in case the file was found on the search path. It's useful to do this |
| 684 | anyway so that error messages show the actual file used. But only do |
| 685 | this if we (may have) used search_path, as printing the full path in |
| 686 | errors for the non-search case can be more noise than signal. */ |
| 687 | source_script_from_stream (opened->stream.get (), file, |
| 688 | search_path ? opened->full_path.get () : file); |
| 689 | } |
| 690 | |
| 691 | /* Wrapper around source_script_with_search to export it to main.c |
| 692 | for use in loading .gdbinit scripts. */ |
| 693 | |
| 694 | void |
| 695 | source_script (const char *file, int from_tty) |
| 696 | { |
| 697 | source_script_with_search (file, from_tty, 0); |
| 698 | } |
| 699 | |
| 700 | static void |
| 701 | source_command (const char *args, int from_tty) |
| 702 | { |
| 703 | const char *file = args; |
| 704 | int search_path = 0; |
| 705 | |
| 706 | scoped_restore save_source_verbose = make_scoped_restore (&source_verbose); |
| 707 | |
| 708 | /* -v causes the source command to run in verbose mode. |
| 709 | -s causes the file to be searched in the source search path, |
| 710 | even if the file name contains a '/'. |
| 711 | We still have to be able to handle filenames with spaces in a |
| 712 | backward compatible way, so buildargv is not appropriate. */ |
| 713 | |
| 714 | if (args) |
| 715 | { |
| 716 | while (args[0] != '\0') |
| 717 | { |
| 718 | /* Make sure leading white space does not break the |
| 719 | comparisons. */ |
| 720 | args = skip_spaces (args); |
| 721 | |
| 722 | if (args[0] != '-') |
| 723 | break; |
| 724 | |
| 725 | if (args[1] == 'v' && isspace (args[2])) |
| 726 | { |
| 727 | source_verbose = 1; |
| 728 | |
| 729 | /* Skip passed -v. */ |
| 730 | args = &args[3]; |
| 731 | } |
| 732 | else if (args[1] == 's' && isspace (args[2])) |
| 733 | { |
| 734 | search_path = 1; |
| 735 | |
| 736 | /* Skip passed -s. */ |
| 737 | args = &args[3]; |
| 738 | } |
| 739 | else |
| 740 | break; |
| 741 | } |
| 742 | |
| 743 | file = skip_spaces (args); |
| 744 | } |
| 745 | |
| 746 | source_script_with_search (file, from_tty, search_path); |
| 747 | } |
| 748 | |
| 749 | |
| 750 | static void |
| 751 | echo_command (const char *text, int from_tty) |
| 752 | { |
| 753 | const char *p = text; |
| 754 | int c; |
| 755 | |
| 756 | if (text) |
| 757 | while ((c = *p++) != '\0') |
| 758 | { |
| 759 | if (c == '\\') |
| 760 | { |
| 761 | /* \ at end of argument is used after spaces |
| 762 | so they won't be lost. */ |
| 763 | if (*p == 0) |
| 764 | return; |
| 765 | |
| 766 | c = parse_escape (get_current_arch (), &p); |
| 767 | if (c >= 0) |
| 768 | printf_filtered ("%c", c); |
| 769 | } |
| 770 | else |
| 771 | printf_filtered ("%c", c); |
| 772 | } |
| 773 | |
| 774 | reset_terminal_style (gdb_stdout); |
| 775 | |
| 776 | /* Force this output to appear now. */ |
| 777 | wrap_here (""); |
| 778 | gdb_flush (gdb_stdout); |
| 779 | } |
| 780 | |
| 781 | /* Sets the last launched shell command convenience variables based on |
| 782 | EXIT_STATUS. */ |
| 783 | |
| 784 | static void |
| 785 | exit_status_set_internal_vars (int exit_status) |
| 786 | { |
| 787 | struct internalvar *var_code = lookup_internalvar ("_shell_exitcode"); |
| 788 | struct internalvar *var_signal = lookup_internalvar ("_shell_exitsignal"); |
| 789 | |
| 790 | clear_internalvar (var_code); |
| 791 | clear_internalvar (var_signal); |
| 792 | if (WIFEXITED (exit_status)) |
| 793 | set_internalvar_integer (var_code, WEXITSTATUS (exit_status)); |
| 794 | #ifdef __MINGW32__ |
| 795 | else if (WIFSIGNALED (exit_status) && WTERMSIG (exit_status) == -1) |
| 796 | { |
| 797 | /* The -1 condition can happen on MinGW, if we don't recognize |
| 798 | the fatal exception code encoded in the exit status; see |
| 799 | gdbsupport/gdb_wait.c. We don't want to lose information in |
| 800 | the exit status in that case. Record it as a normal exit |
| 801 | with the full exit status, including the higher 0xC0000000 |
| 802 | bits. */ |
| 803 | set_internalvar_integer (var_code, exit_status); |
| 804 | } |
| 805 | #endif |
| 806 | else if (WIFSIGNALED (exit_status)) |
| 807 | set_internalvar_integer (var_signal, WTERMSIG (exit_status)); |
| 808 | else |
| 809 | warning (_("unexpected shell command exit status %d"), exit_status); |
| 810 | } |
| 811 | |
| 812 | static void |
| 813 | shell_escape (const char *arg, int from_tty) |
| 814 | { |
| 815 | #if defined(CANT_FORK) || \ |
| 816 | (!defined(HAVE_WORKING_VFORK) && !defined(HAVE_WORKING_FORK)) |
| 817 | /* If ARG is NULL, they want an inferior shell, but `system' just |
| 818 | reports if the shell is available when passed a NULL arg. */ |
| 819 | int rc = system (arg ? arg : ""); |
| 820 | |
| 821 | if (!arg) |
| 822 | arg = "inferior shell"; |
| 823 | |
| 824 | if (rc == -1) |
| 825 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg, |
| 826 | safe_strerror (errno)); |
| 827 | else if (rc) |
| 828 | fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc); |
| 829 | #ifdef GLOBAL_CURDIR |
| 830 | /* Make sure to return to the directory GDB thinks it is, in case |
| 831 | the shell command we just ran changed it. */ |
| 832 | chdir (current_directory); |
| 833 | #endif |
| 834 | exit_status_set_internal_vars (rc); |
| 835 | #else /* Can fork. */ |
| 836 | int status, pid; |
| 837 | |
| 838 | if ((pid = vfork ()) == 0) |
| 839 | { |
| 840 | const char *p, *user_shell = get_shell (); |
| 841 | |
| 842 | close_most_fds (); |
| 843 | |
| 844 | /* Get the name of the shell for arg0. */ |
| 845 | p = lbasename (user_shell); |
| 846 | |
| 847 | if (!arg) |
| 848 | execl (user_shell, p, (char *) 0); |
| 849 | else |
| 850 | execl (user_shell, p, "-c", arg, (char *) 0); |
| 851 | |
| 852 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell, |
| 853 | safe_strerror (errno)); |
| 854 | _exit (0177); |
| 855 | } |
| 856 | |
| 857 | if (pid != -1) |
| 858 | waitpid (pid, &status, 0); |
| 859 | else |
| 860 | error (_("Fork failed")); |
| 861 | exit_status_set_internal_vars (status); |
| 862 | #endif /* Can fork. */ |
| 863 | } |
| 864 | |
| 865 | /* Implementation of the "shell" command. */ |
| 866 | |
| 867 | static void |
| 868 | shell_command (const char *arg, int from_tty) |
| 869 | { |
| 870 | shell_escape (arg, from_tty); |
| 871 | } |
| 872 | |
| 873 | static void |
| 874 | edit_command (const char *arg, int from_tty) |
| 875 | { |
| 876 | struct symtab_and_line sal; |
| 877 | struct symbol *sym; |
| 878 | const char *editor; |
| 879 | char *p; |
| 880 | const char *fn; |
| 881 | |
| 882 | /* Pull in the current default source line if necessary. */ |
| 883 | if (arg == 0) |
| 884 | { |
| 885 | set_default_source_symtab_and_line (); |
| 886 | sal = get_current_source_symtab_and_line (); |
| 887 | } |
| 888 | |
| 889 | /* Bare "edit" edits file with present line. */ |
| 890 | |
| 891 | if (arg == 0) |
| 892 | { |
| 893 | if (sal.symtab == 0) |
| 894 | error (_("No default source file yet.")); |
| 895 | sal.line += get_lines_to_list () / 2; |
| 896 | } |
| 897 | else |
| 898 | { |
| 899 | const char *arg1; |
| 900 | |
| 901 | /* Now should only be one argument -- decode it in SAL. */ |
| 902 | arg1 = arg; |
| 903 | event_location_up location = string_to_event_location (&arg1, |
| 904 | current_language); |
| 905 | std::vector<symtab_and_line> sals = decode_line_1 (location.get (), |
| 906 | DECODE_LINE_LIST_MODE, |
| 907 | NULL, NULL, 0); |
| 908 | |
| 909 | filter_sals (sals); |
| 910 | if (sals.empty ()) |
| 911 | { |
| 912 | /* C++ */ |
| 913 | return; |
| 914 | } |
| 915 | if (sals.size () > 1) |
| 916 | { |
| 917 | ambiguous_line_spec (sals, |
| 918 | _("Specified line is ambiguous:\n")); |
| 919 | return; |
| 920 | } |
| 921 | |
| 922 | sal = sals[0]; |
| 923 | |
| 924 | if (*arg1) |
| 925 | error (_("Junk at end of line specification.")); |
| 926 | |
| 927 | /* If line was specified by address, first print exactly which |
| 928 | line, and which file. In this case, sal.symtab == 0 means |
| 929 | address is outside of all known source files, not that user |
| 930 | failed to give a filename. */ |
| 931 | if (*arg == '*') |
| 932 | { |
| 933 | struct gdbarch *gdbarch; |
| 934 | |
| 935 | if (sal.symtab == 0) |
| 936 | error (_("No source file for address %s."), |
| 937 | paddress (get_current_arch (), sal.pc)); |
| 938 | |
| 939 | gdbarch = SYMTAB_OBJFILE (sal.symtab)->arch (); |
| 940 | sym = find_pc_function (sal.pc); |
| 941 | if (sym) |
| 942 | printf_filtered ("%s is in %s (%s:%d).\n", |
| 943 | paddress (gdbarch, sal.pc), |
| 944 | sym->print_name (), |
| 945 | symtab_to_filename_for_display (sal.symtab), |
| 946 | sal.line); |
| 947 | else |
| 948 | printf_filtered ("%s is at %s:%d.\n", |
| 949 | paddress (gdbarch, sal.pc), |
| 950 | symtab_to_filename_for_display (sal.symtab), |
| 951 | sal.line); |
| 952 | } |
| 953 | |
| 954 | /* If what was given does not imply a symtab, it must be an |
| 955 | undebuggable symbol which means no source code. */ |
| 956 | |
| 957 | if (sal.symtab == 0) |
| 958 | error (_("No line number known for %s."), arg); |
| 959 | } |
| 960 | |
| 961 | if ((editor = getenv ("EDITOR")) == NULL) |
| 962 | editor = "/bin/ex"; |
| 963 | |
| 964 | fn = symtab_to_fullname (sal.symtab); |
| 965 | |
| 966 | /* Quote the file name, in case it has whitespace or other special |
| 967 | characters. */ |
| 968 | p = xstrprintf ("%s +%d \"%s\"", editor, sal.line, fn); |
| 969 | shell_escape (p, from_tty); |
| 970 | xfree (p); |
| 971 | } |
| 972 | |
| 973 | /* The options for the "pipe" command. */ |
| 974 | |
| 975 | struct pipe_cmd_opts |
| 976 | { |
| 977 | /* For "-d". */ |
| 978 | char *delimiter = nullptr; |
| 979 | |
| 980 | ~pipe_cmd_opts () |
| 981 | { |
| 982 | xfree (delimiter); |
| 983 | } |
| 984 | }; |
| 985 | |
| 986 | static const gdb::option::option_def pipe_cmd_option_defs[] = { |
| 987 | |
| 988 | gdb::option::string_option_def<pipe_cmd_opts> { |
| 989 | "d", |
| 990 | [] (pipe_cmd_opts *opts) { return &opts->delimiter; }, |
| 991 | nullptr, |
| 992 | N_("Indicates to use the specified delimiter string to separate\n\ |
| 993 | COMMAND from SHELL_COMMAND, in alternative to |. This is useful in\n\ |
| 994 | case COMMAND contains a | character."), |
| 995 | }, |
| 996 | |
| 997 | }; |
| 998 | |
| 999 | /* Create an option_def_group for the "pipe" command's options, with |
| 1000 | OPTS as context. */ |
| 1001 | |
| 1002 | static inline gdb::option::option_def_group |
| 1003 | make_pipe_cmd_options_def_group (pipe_cmd_opts *opts) |
| 1004 | { |
| 1005 | return {{pipe_cmd_option_defs}, opts}; |
| 1006 | } |
| 1007 | |
| 1008 | /* Implementation of the "pipe" command. */ |
| 1009 | |
| 1010 | static void |
| 1011 | pipe_command (const char *arg, int from_tty) |
| 1012 | { |
| 1013 | pipe_cmd_opts opts; |
| 1014 | |
| 1015 | auto grp = make_pipe_cmd_options_def_group (&opts); |
| 1016 | gdb::option::process_options |
| 1017 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); |
| 1018 | |
| 1019 | const char *delim = "|"; |
| 1020 | if (opts.delimiter != nullptr) |
| 1021 | delim = opts.delimiter; |
| 1022 | |
| 1023 | const char *command = arg; |
| 1024 | if (command == nullptr) |
| 1025 | error (_("Missing COMMAND")); |
| 1026 | |
| 1027 | arg = strstr (arg, delim); |
| 1028 | |
| 1029 | if (arg == nullptr) |
| 1030 | error (_("Missing delimiter before SHELL_COMMAND")); |
| 1031 | |
| 1032 | std::string gdb_cmd (command, arg - command); |
| 1033 | |
| 1034 | arg += strlen (delim); /* Skip the delimiter. */ |
| 1035 | |
| 1036 | if (gdb_cmd.empty ()) |
| 1037 | gdb_cmd = repeat_previous (); |
| 1038 | |
| 1039 | const char *shell_command = skip_spaces (arg); |
| 1040 | if (*shell_command == '\0') |
| 1041 | error (_("Missing SHELL_COMMAND")); |
| 1042 | |
| 1043 | FILE *to_shell_command = popen (shell_command, "w"); |
| 1044 | |
| 1045 | if (to_shell_command == nullptr) |
| 1046 | error (_("Error launching \"%s\""), shell_command); |
| 1047 | |
| 1048 | try |
| 1049 | { |
| 1050 | stdio_file pipe_file (to_shell_command); |
| 1051 | |
| 1052 | execute_command_to_ui_file (&pipe_file, gdb_cmd.c_str (), from_tty); |
| 1053 | } |
| 1054 | catch (...) |
| 1055 | { |
| 1056 | pclose (to_shell_command); |
| 1057 | throw; |
| 1058 | } |
| 1059 | |
| 1060 | int exit_status = pclose (to_shell_command); |
| 1061 | |
| 1062 | if (exit_status < 0) |
| 1063 | error (_("shell command \"%s\" failed: %s"), shell_command, |
| 1064 | safe_strerror (errno)); |
| 1065 | exit_status_set_internal_vars (exit_status); |
| 1066 | } |
| 1067 | |
| 1068 | /* Completer for the pipe command. */ |
| 1069 | |
| 1070 | static void |
| 1071 | pipe_command_completer (struct cmd_list_element *ignore, |
| 1072 | completion_tracker &tracker, |
| 1073 | const char *text, const char *word_ignored) |
| 1074 | { |
| 1075 | pipe_cmd_opts opts; |
| 1076 | |
| 1077 | const char *org_text = text; |
| 1078 | auto grp = make_pipe_cmd_options_def_group (&opts); |
| 1079 | if (gdb::option::complete_options |
| 1080 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp)) |
| 1081 | return; |
| 1082 | |
| 1083 | const char *delimiter = "|"; |
| 1084 | if (opts.delimiter != nullptr) |
| 1085 | delimiter = opts.delimiter; |
| 1086 | |
| 1087 | /* Check if we're past option values already. */ |
| 1088 | if (text > org_text && !isspace (text[-1])) |
| 1089 | return; |
| 1090 | |
| 1091 | const char *delim = strstr (text, delimiter); |
| 1092 | |
| 1093 | /* If we're still not past the delimiter, complete the gdb |
| 1094 | command. */ |
| 1095 | if (delim == nullptr || delim == text) |
| 1096 | { |
| 1097 | complete_nested_command_line (tracker, text); |
| 1098 | return; |
| 1099 | } |
| 1100 | |
| 1101 | /* We're past the delimiter. What follows is a shell command, which |
| 1102 | we don't know how to complete. */ |
| 1103 | } |
| 1104 | |
| 1105 | static void |
| 1106 | list_command (const char *arg, int from_tty) |
| 1107 | { |
| 1108 | struct symbol *sym; |
| 1109 | const char *arg1; |
| 1110 | int no_end = 1; |
| 1111 | int dummy_end = 0; |
| 1112 | int dummy_beg = 0; |
| 1113 | int linenum_beg = 0; |
| 1114 | const char *p; |
| 1115 | |
| 1116 | /* Pull in the current default source line if necessary. */ |
| 1117 | if (arg == NULL || ((arg[0] == '+' || arg[0] == '-') && arg[1] == '\0')) |
| 1118 | { |
| 1119 | set_default_source_symtab_and_line (); |
| 1120 | symtab_and_line cursal = get_current_source_symtab_and_line (); |
| 1121 | |
| 1122 | /* If this is the first "list" since we've set the current |
| 1123 | source line, center the listing around that line. */ |
| 1124 | if (get_first_line_listed () == 0) |
| 1125 | { |
| 1126 | int first; |
| 1127 | |
| 1128 | first = std::max (cursal.line - get_lines_to_list () / 2, 1); |
| 1129 | |
| 1130 | /* A small special case --- if listing backwards, and we |
| 1131 | should list only one line, list the preceding line, |
| 1132 | instead of the exact line we've just shown after e.g., |
| 1133 | stopping for a breakpoint. */ |
| 1134 | if (arg != NULL && arg[0] == '-' |
| 1135 | && get_lines_to_list () == 1 && first > 1) |
| 1136 | first -= 1; |
| 1137 | |
| 1138 | print_source_lines (cursal.symtab, source_lines_range (first), 0); |
| 1139 | } |
| 1140 | |
| 1141 | /* "l" or "l +" lists next ten lines. */ |
| 1142 | else if (arg == NULL || arg[0] == '+') |
| 1143 | print_source_lines (cursal.symtab, |
| 1144 | source_lines_range (cursal.line), 0); |
| 1145 | |
| 1146 | /* "l -" lists previous ten lines, the ones before the ten just |
| 1147 | listed. */ |
| 1148 | else if (arg[0] == '-') |
| 1149 | { |
| 1150 | if (get_first_line_listed () == 1) |
| 1151 | error (_("Already at the start of %s."), |
| 1152 | symtab_to_filename_for_display (cursal.symtab)); |
| 1153 | source_lines_range range (get_first_line_listed (), |
| 1154 | source_lines_range::BACKWARD); |
| 1155 | print_source_lines (cursal.symtab, range, 0); |
| 1156 | } |
| 1157 | |
| 1158 | return; |
| 1159 | } |
| 1160 | |
| 1161 | /* Now if there is only one argument, decode it in SAL |
| 1162 | and set NO_END. |
| 1163 | If there are two arguments, decode them in SAL and SAL_END |
| 1164 | and clear NO_END; however, if one of the arguments is blank, |
| 1165 | set DUMMY_BEG or DUMMY_END to record that fact. */ |
| 1166 | |
| 1167 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 1168 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
| 1169 | |
| 1170 | std::vector<symtab_and_line> sals; |
| 1171 | symtab_and_line sal, sal_end; |
| 1172 | |
| 1173 | arg1 = arg; |
| 1174 | if (*arg1 == ',') |
| 1175 | dummy_beg = 1; |
| 1176 | else |
| 1177 | { |
| 1178 | event_location_up location = string_to_event_location (&arg1, |
| 1179 | current_language); |
| 1180 | sals = decode_line_1 (location.get (), DECODE_LINE_LIST_MODE, |
| 1181 | NULL, NULL, 0); |
| 1182 | filter_sals (sals); |
| 1183 | if (sals.empty ()) |
| 1184 | { |
| 1185 | /* C++ */ |
| 1186 | return; |
| 1187 | } |
| 1188 | |
| 1189 | sal = sals[0]; |
| 1190 | } |
| 1191 | |
| 1192 | /* Record whether the BEG arg is all digits. */ |
| 1193 | |
| 1194 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); |
| 1195 | linenum_beg = (p == arg1); |
| 1196 | |
| 1197 | /* Save the range of the first argument, in case we need to let the |
| 1198 | user know it was ambiguous. */ |
| 1199 | const char *beg = arg; |
| 1200 | size_t beg_len = arg1 - beg; |
| 1201 | |
| 1202 | while (*arg1 == ' ' || *arg1 == '\t') |
| 1203 | arg1++; |
| 1204 | if (*arg1 == ',') |
| 1205 | { |
| 1206 | no_end = 0; |
| 1207 | if (sals.size () > 1) |
| 1208 | { |
| 1209 | ambiguous_line_spec (sals, |
| 1210 | _("Specified first line '%.*s' is ambiguous:\n"), |
| 1211 | (int) beg_len, beg); |
| 1212 | return; |
| 1213 | } |
| 1214 | arg1++; |
| 1215 | while (*arg1 == ' ' || *arg1 == '\t') |
| 1216 | arg1++; |
| 1217 | if (*arg1 == 0) |
| 1218 | dummy_end = 1; |
| 1219 | else |
| 1220 | { |
| 1221 | /* Save the last argument, in case we need to let the user |
| 1222 | know it was ambiguous. */ |
| 1223 | const char *end_arg = arg1; |
| 1224 | |
| 1225 | event_location_up location |
| 1226 | = string_to_event_location (&arg1, current_language); |
| 1227 | |
| 1228 | std::vector<symtab_and_line> sals_end |
| 1229 | = (dummy_beg |
| 1230 | ? decode_line_1 (location.get (), DECODE_LINE_LIST_MODE, |
| 1231 | NULL, NULL, 0) |
| 1232 | : decode_line_1 (location.get (), DECODE_LINE_LIST_MODE, |
| 1233 | NULL, sal.symtab, sal.line)); |
| 1234 | |
| 1235 | filter_sals (sals_end); |
| 1236 | if (sals_end.empty ()) |
| 1237 | return; |
| 1238 | if (sals_end.size () > 1) |
| 1239 | { |
| 1240 | ambiguous_line_spec (sals_end, |
| 1241 | _("Specified last line '%s' is ambiguous:\n"), |
| 1242 | end_arg); |
| 1243 | return; |
| 1244 | } |
| 1245 | sal_end = sals_end[0]; |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | if (*arg1) |
| 1250 | error (_("Junk at end of line specification.")); |
| 1251 | |
| 1252 | if (!no_end && !dummy_beg && !dummy_end |
| 1253 | && sal.symtab != sal_end.symtab) |
| 1254 | error (_("Specified first and last lines are in different files.")); |
| 1255 | if (dummy_beg && dummy_end) |
| 1256 | error (_("Two empty args do not say what lines to list.")); |
| 1257 | |
| 1258 | /* If line was specified by address, |
| 1259 | first print exactly which line, and which file. |
| 1260 | |
| 1261 | In this case, sal.symtab == 0 means address is outside of all |
| 1262 | known source files, not that user failed to give a filename. */ |
| 1263 | if (*arg == '*') |
| 1264 | { |
| 1265 | struct gdbarch *gdbarch; |
| 1266 | |
| 1267 | if (sal.symtab == 0) |
| 1268 | error (_("No source file for address %s."), |
| 1269 | paddress (get_current_arch (), sal.pc)); |
| 1270 | |
| 1271 | gdbarch = SYMTAB_OBJFILE (sal.symtab)->arch (); |
| 1272 | sym = find_pc_function (sal.pc); |
| 1273 | if (sym) |
| 1274 | printf_filtered ("%s is in %s (%s:%d).\n", |
| 1275 | paddress (gdbarch, sal.pc), |
| 1276 | sym->print_name (), |
| 1277 | symtab_to_filename_for_display (sal.symtab), sal.line); |
| 1278 | else |
| 1279 | printf_filtered ("%s is at %s:%d.\n", |
| 1280 | paddress (gdbarch, sal.pc), |
| 1281 | symtab_to_filename_for_display (sal.symtab), sal.line); |
| 1282 | } |
| 1283 | |
| 1284 | /* If line was not specified by just a line number, and it does not |
| 1285 | imply a symtab, it must be an undebuggable symbol which means no |
| 1286 | source code. */ |
| 1287 | |
| 1288 | if (!linenum_beg && sal.symtab == 0) |
| 1289 | error (_("No line number known for %s."), arg); |
| 1290 | |
| 1291 | /* If this command is repeated with RET, |
| 1292 | turn it into the no-arg variant. */ |
| 1293 | |
| 1294 | if (from_tty) |
| 1295 | set_repeat_arguments (""); |
| 1296 | |
| 1297 | if (dummy_beg && sal_end.symtab == 0) |
| 1298 | error (_("No default source file yet. Do \"help list\".")); |
| 1299 | if (dummy_beg) |
| 1300 | { |
| 1301 | source_lines_range range (sal_end.line + 1, |
| 1302 | source_lines_range::BACKWARD); |
| 1303 | print_source_lines (sal_end.symtab, range, 0); |
| 1304 | } |
| 1305 | else if (sal.symtab == 0) |
| 1306 | error (_("No default source file yet. Do \"help list\".")); |
| 1307 | else if (no_end) |
| 1308 | { |
| 1309 | for (int i = 0; i < sals.size (); i++) |
| 1310 | { |
| 1311 | sal = sals[i]; |
| 1312 | int first_line = sal.line - get_lines_to_list () / 2; |
| 1313 | if (first_line < 1) |
| 1314 | first_line = 1; |
| 1315 | if (sals.size () > 1) |
| 1316 | print_sal_location (sal); |
| 1317 | print_source_lines (sal.symtab, source_lines_range (first_line), 0); |
| 1318 | } |
| 1319 | } |
| 1320 | else if (dummy_end) |
| 1321 | print_source_lines (sal.symtab, source_lines_range (sal.line), 0); |
| 1322 | else |
| 1323 | print_source_lines (sal.symtab, |
| 1324 | source_lines_range (sal.line, (sal_end.line + 1)), |
| 1325 | 0); |
| 1326 | } |
| 1327 | |
| 1328 | /* Subroutine of disassemble_command to simplify it. |
| 1329 | Perform the disassembly. |
| 1330 | NAME is the name of the function if known, or NULL. |
| 1331 | [LOW,HIGH) are the range of addresses to disassemble. |
| 1332 | BLOCK is the block to disassemble; it needs to be provided |
| 1333 | when non-contiguous blocks are disassembled; otherwise |
| 1334 | it can be NULL. |
| 1335 | MIXED is non-zero to print source with the assembler. */ |
| 1336 | |
| 1337 | static void |
| 1338 | print_disassembly (struct gdbarch *gdbarch, const char *name, |
| 1339 | CORE_ADDR low, CORE_ADDR high, |
| 1340 | const struct block *block, |
| 1341 | gdb_disassembly_flags flags) |
| 1342 | { |
| 1343 | #if defined(TUI) |
| 1344 | if (tui_is_window_visible (DISASSEM_WIN)) |
| 1345 | tui_show_assembly (gdbarch, low); |
| 1346 | else |
| 1347 | #endif |
| 1348 | { |
| 1349 | printf_filtered ("Dump of assembler code "); |
| 1350 | if (name != NULL) |
| 1351 | printf_filtered ("for function %s:\n", name); |
| 1352 | if (block == nullptr || BLOCK_CONTIGUOUS_P (block)) |
| 1353 | { |
| 1354 | if (name == NULL) |
| 1355 | printf_filtered ("from %s to %s:\n", |
| 1356 | paddress (gdbarch, low), paddress (gdbarch, high)); |
| 1357 | |
| 1358 | /* Dump the specified range. */ |
| 1359 | gdb_disassembly (gdbarch, current_uiout, flags, -1, low, high); |
| 1360 | } |
| 1361 | else |
| 1362 | { |
| 1363 | for (int i = 0; i < BLOCK_NRANGES (block); i++) |
| 1364 | { |
| 1365 | CORE_ADDR range_low = BLOCK_RANGE_START (block, i); |
| 1366 | CORE_ADDR range_high = BLOCK_RANGE_END (block, i); |
| 1367 | printf_filtered (_("Address range %s to %s:\n"), |
| 1368 | paddress (gdbarch, range_low), |
| 1369 | paddress (gdbarch, range_high)); |
| 1370 | gdb_disassembly (gdbarch, current_uiout, flags, -1, |
| 1371 | range_low, range_high); |
| 1372 | } |
| 1373 | } |
| 1374 | printf_filtered ("End of assembler dump.\n"); |
| 1375 | } |
| 1376 | } |
| 1377 | |
| 1378 | /* Subroutine of disassemble_command to simplify it. |
| 1379 | Print a disassembly of the current function according to FLAGS. */ |
| 1380 | |
| 1381 | static void |
| 1382 | disassemble_current_function (gdb_disassembly_flags flags) |
| 1383 | { |
| 1384 | struct frame_info *frame; |
| 1385 | struct gdbarch *gdbarch; |
| 1386 | CORE_ADDR low, high, pc; |
| 1387 | const char *name; |
| 1388 | const struct block *block; |
| 1389 | |
| 1390 | frame = get_selected_frame (_("No frame selected.")); |
| 1391 | gdbarch = get_frame_arch (frame); |
| 1392 | pc = get_frame_address_in_block (frame); |
| 1393 | if (find_pc_partial_function (pc, &name, &low, &high, &block) == 0) |
| 1394 | error (_("No function contains program counter for selected frame.")); |
| 1395 | #if defined(TUI) |
| 1396 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
| 1397 | `tui_version'. */ |
| 1398 | if (tui_active) |
| 1399 | /* FIXME: cagney/2004-02-07: This should be an observer. */ |
| 1400 | low = tui_get_low_disassembly_address (gdbarch, low, pc); |
| 1401 | #endif |
| 1402 | low += gdbarch_deprecated_function_start_offset (gdbarch); |
| 1403 | |
| 1404 | print_disassembly (gdbarch, name, low, high, block, flags); |
| 1405 | } |
| 1406 | |
| 1407 | /* Dump a specified section of assembly code. |
| 1408 | |
| 1409 | Usage: |
| 1410 | disassemble [/mrs] |
| 1411 | - dump the assembly code for the function of the current pc |
| 1412 | disassemble [/mrs] addr |
| 1413 | - dump the assembly code for the function at ADDR |
| 1414 | disassemble [/mrs] low,high |
| 1415 | disassemble [/mrs] low,+length |
| 1416 | - dump the assembly code in the range [LOW,HIGH), or [LOW,LOW+length) |
| 1417 | |
| 1418 | A /m modifier will include source code with the assembly in a |
| 1419 | "source centric" view. This view lists only the file of the first insn, |
| 1420 | even if other source files are involved (e.g., inlined functions), and |
| 1421 | the output is in source order, even with optimized code. This view is |
| 1422 | considered deprecated as it hasn't been useful in practice. |
| 1423 | |
| 1424 | A /r modifier will include raw instructions in hex with the assembly. |
| 1425 | |
| 1426 | A /s modifier will include source code with the assembly, like /m, with |
| 1427 | two important differences: |
| 1428 | 1) The output is still in pc address order. |
| 1429 | 2) File names and contents for all relevant source files are displayed. */ |
| 1430 | |
| 1431 | static void |
| 1432 | disassemble_command (const char *arg, int from_tty) |
| 1433 | { |
| 1434 | struct gdbarch *gdbarch = get_current_arch (); |
| 1435 | CORE_ADDR low, high; |
| 1436 | const char *name; |
| 1437 | CORE_ADDR pc; |
| 1438 | gdb_disassembly_flags flags; |
| 1439 | const char *p; |
| 1440 | const struct block *block = nullptr; |
| 1441 | |
| 1442 | p = arg; |
| 1443 | name = NULL; |
| 1444 | flags = 0; |
| 1445 | |
| 1446 | if (p && *p == '/') |
| 1447 | { |
| 1448 | ++p; |
| 1449 | |
| 1450 | if (*p == '\0') |
| 1451 | error (_("Missing modifier.")); |
| 1452 | |
| 1453 | while (*p && ! isspace (*p)) |
| 1454 | { |
| 1455 | switch (*p++) |
| 1456 | { |
| 1457 | case 'm': |
| 1458 | flags |= DISASSEMBLY_SOURCE_DEPRECATED; |
| 1459 | break; |
| 1460 | case 'r': |
| 1461 | flags |= DISASSEMBLY_RAW_INSN; |
| 1462 | break; |
| 1463 | case 's': |
| 1464 | flags |= DISASSEMBLY_SOURCE; |
| 1465 | break; |
| 1466 | default: |
| 1467 | error (_("Invalid disassembly modifier.")); |
| 1468 | } |
| 1469 | } |
| 1470 | |
| 1471 | p = skip_spaces (p); |
| 1472 | } |
| 1473 | |
| 1474 | if ((flags & (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE)) |
| 1475 | == (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE)) |
| 1476 | error (_("Cannot specify both /m and /s.")); |
| 1477 | |
| 1478 | if (! p || ! *p) |
| 1479 | { |
| 1480 | flags |= DISASSEMBLY_OMIT_FNAME; |
| 1481 | disassemble_current_function (flags); |
| 1482 | return; |
| 1483 | } |
| 1484 | |
| 1485 | pc = value_as_address (parse_to_comma_and_eval (&p)); |
| 1486 | if (p[0] == ',') |
| 1487 | ++p; |
| 1488 | if (p[0] == '\0') |
| 1489 | { |
| 1490 | /* One argument. */ |
| 1491 | if (find_pc_partial_function (pc, &name, &low, &high, &block) == 0) |
| 1492 | error (_("No function contains specified address.")); |
| 1493 | #if defined(TUI) |
| 1494 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
| 1495 | `tui_version'. */ |
| 1496 | if (tui_active) |
| 1497 | /* FIXME: cagney/2004-02-07: This should be an observer. */ |
| 1498 | low = tui_get_low_disassembly_address (gdbarch, low, pc); |
| 1499 | #endif |
| 1500 | low += gdbarch_deprecated_function_start_offset (gdbarch); |
| 1501 | flags |= DISASSEMBLY_OMIT_FNAME; |
| 1502 | } |
| 1503 | else |
| 1504 | { |
| 1505 | /* Two arguments. */ |
| 1506 | int incl_flag = 0; |
| 1507 | low = pc; |
| 1508 | p = skip_spaces (p); |
| 1509 | if (p[0] == '+') |
| 1510 | { |
| 1511 | ++p; |
| 1512 | incl_flag = 1; |
| 1513 | } |
| 1514 | high = parse_and_eval_address (p); |
| 1515 | if (incl_flag) |
| 1516 | high += low; |
| 1517 | } |
| 1518 | |
| 1519 | print_disassembly (gdbarch, name, low, high, block, flags); |
| 1520 | } |
| 1521 | |
| 1522 | static void |
| 1523 | make_command (const char *arg, int from_tty) |
| 1524 | { |
| 1525 | if (arg == 0) |
| 1526 | shell_escape ("make", from_tty); |
| 1527 | else |
| 1528 | { |
| 1529 | std::string cmd = std::string ("make ") + arg; |
| 1530 | |
| 1531 | shell_escape (cmd.c_str (), from_tty); |
| 1532 | } |
| 1533 | } |
| 1534 | |
| 1535 | static void |
| 1536 | show_user (const char *args, int from_tty) |
| 1537 | { |
| 1538 | struct cmd_list_element *c; |
| 1539 | |
| 1540 | if (args) |
| 1541 | { |
| 1542 | const char *comname = args; |
| 1543 | |
| 1544 | c = lookup_cmd (&comname, cmdlist, "", 0, 1); |
| 1545 | if (!cli_user_command_p (c)) |
| 1546 | error (_("Not a user command.")); |
| 1547 | show_user_1 (c, "", args, gdb_stdout); |
| 1548 | } |
| 1549 | else |
| 1550 | { |
| 1551 | for (c = cmdlist; c; c = c->next) |
| 1552 | { |
| 1553 | if (cli_user_command_p (c) || c->prefixlist != NULL) |
| 1554 | show_user_1 (c, "", c->name, gdb_stdout); |
| 1555 | } |
| 1556 | } |
| 1557 | } |
| 1558 | |
| 1559 | /* Search through names of commands and documentations for a certain |
| 1560 | regular expression. */ |
| 1561 | |
| 1562 | static void |
| 1563 | apropos_command (const char *arg, int from_tty) |
| 1564 | { |
| 1565 | bool verbose = arg && check_for_argument (&arg, "-v", 2); |
| 1566 | |
| 1567 | if (arg == NULL || *arg == '\0') |
| 1568 | error (_("REGEXP string is empty")); |
| 1569 | |
| 1570 | compiled_regex pattern (arg, REG_ICASE, |
| 1571 | _("Error in regular expression")); |
| 1572 | |
| 1573 | apropos_cmd (gdb_stdout, cmdlist, verbose, pattern, ""); |
| 1574 | } |
| 1575 | |
| 1576 | /* Subroutine of alias_command to simplify it. |
| 1577 | Return the first N elements of ARGV flattened back to a string |
| 1578 | with a space separating each element. |
| 1579 | ARGV may not be NULL. |
| 1580 | This does not take care of quoting elements in case they contain spaces |
| 1581 | on purpose. */ |
| 1582 | |
| 1583 | static std::string |
| 1584 | argv_to_string (char **argv, int n) |
| 1585 | { |
| 1586 | int i; |
| 1587 | std::string result; |
| 1588 | |
| 1589 | gdb_assert (argv != NULL); |
| 1590 | gdb_assert (n >= 0 && n <= countargv (argv)); |
| 1591 | |
| 1592 | for (i = 0; i < n; ++i) |
| 1593 | { |
| 1594 | if (i > 0) |
| 1595 | result += " "; |
| 1596 | result += argv[i]; |
| 1597 | } |
| 1598 | |
| 1599 | return result; |
| 1600 | } |
| 1601 | |
| 1602 | /* Subroutine of alias_command to simplify it. |
| 1603 | Return true if COMMAND exists, unambiguously. Otherwise false. */ |
| 1604 | |
| 1605 | static bool |
| 1606 | valid_command_p (const char *command) |
| 1607 | { |
| 1608 | struct cmd_list_element *c; |
| 1609 | |
| 1610 | c = lookup_cmd_1 (& command, cmdlist, NULL, 1); |
| 1611 | |
| 1612 | if (c == NULL || c == (struct cmd_list_element *) -1) |
| 1613 | return false; |
| 1614 | |
| 1615 | /* This is the slightly tricky part. |
| 1616 | lookup_cmd_1 will return a pointer to the last part of COMMAND |
| 1617 | to match, leaving COMMAND pointing at the remainder. */ |
| 1618 | while (*command == ' ' || *command == '\t') |
| 1619 | ++command; |
| 1620 | return *command == '\0'; |
| 1621 | } |
| 1622 | |
| 1623 | /* Called when "alias" was incorrectly used. */ |
| 1624 | |
| 1625 | static void |
| 1626 | alias_usage_error (void) |
| 1627 | { |
| 1628 | error (_("Usage: alias [-a] [--] ALIAS = COMMAND")); |
| 1629 | } |
| 1630 | |
| 1631 | /* Make an alias of an existing command. */ |
| 1632 | |
| 1633 | static void |
| 1634 | alias_command (const char *args, int from_tty) |
| 1635 | { |
| 1636 | int i, alias_argc, command_argc; |
| 1637 | int abbrev_flag = 0; |
| 1638 | const char *equals; |
| 1639 | const char *alias, *command; |
| 1640 | |
| 1641 | if (args == NULL || strchr (args, '=') == NULL) |
| 1642 | alias_usage_error (); |
| 1643 | |
| 1644 | equals = strchr (args, '='); |
| 1645 | std::string args2 (args, equals - args); |
| 1646 | |
| 1647 | gdb_argv built_alias_argv (args2.c_str ()); |
| 1648 | gdb_argv command_argv (equals + 1); |
| 1649 | |
| 1650 | char **alias_argv = built_alias_argv.get (); |
| 1651 | while (alias_argv[0] != NULL) |
| 1652 | { |
| 1653 | if (strcmp (alias_argv[0], "-a") == 0) |
| 1654 | { |
| 1655 | ++alias_argv; |
| 1656 | abbrev_flag = 1; |
| 1657 | } |
| 1658 | else if (strcmp (alias_argv[0], "--") == 0) |
| 1659 | { |
| 1660 | ++alias_argv; |
| 1661 | break; |
| 1662 | } |
| 1663 | else |
| 1664 | break; |
| 1665 | } |
| 1666 | |
| 1667 | if (alias_argv[0] == NULL || command_argv[0] == NULL |
| 1668 | || *alias_argv[0] == '\0' || *command_argv[0] == '\0') |
| 1669 | alias_usage_error (); |
| 1670 | |
| 1671 | for (i = 0; alias_argv[i] != NULL; ++i) |
| 1672 | { |
| 1673 | if (! valid_user_defined_cmd_name_p (alias_argv[i])) |
| 1674 | { |
| 1675 | if (i == 0) |
| 1676 | error (_("Invalid command name: %s"), alias_argv[i]); |
| 1677 | else |
| 1678 | error (_("Invalid command element name: %s"), alias_argv[i]); |
| 1679 | } |
| 1680 | } |
| 1681 | |
| 1682 | alias_argc = countargv (alias_argv); |
| 1683 | command_argc = command_argv.count (); |
| 1684 | |
| 1685 | /* COMMAND must exist. |
| 1686 | Reconstruct the command to remove any extraneous spaces, |
| 1687 | for better error messages. */ |
| 1688 | std::string command_string (argv_to_string (command_argv.get (), |
| 1689 | command_argc)); |
| 1690 | command = command_string.c_str (); |
| 1691 | if (! valid_command_p (command)) |
| 1692 | error (_("Invalid command to alias to: %s"), command); |
| 1693 | |
| 1694 | /* ALIAS must not exist. */ |
| 1695 | std::string alias_string (argv_to_string (alias_argv, alias_argc)); |
| 1696 | alias = alias_string.c_str (); |
| 1697 | { |
| 1698 | cmd_list_element *alias_cmd, *prefix_cmd, *cmd; |
| 1699 | |
| 1700 | if (lookup_cmd_composition (alias, &alias_cmd, &prefix_cmd, &cmd)) |
| 1701 | { |
| 1702 | const char *alias_name = alias_argv[alias_argc-1]; |
| 1703 | |
| 1704 | /* If we found an existing ALIAS_CMD, check that the prefix differ or |
| 1705 | the name differ. */ |
| 1706 | |
| 1707 | if (alias_cmd != nullptr |
| 1708 | && alias_cmd->prefix == prefix_cmd |
| 1709 | && strcmp (alias_name, alias_cmd->name) == 0) |
| 1710 | error (_("Alias already exists: %s"), alias); |
| 1711 | |
| 1712 | /* Check ALIAS differs from the found CMD. */ |
| 1713 | |
| 1714 | if (cmd->prefix == prefix_cmd |
| 1715 | && strcmp (alias_name, cmd->name) == 0) |
| 1716 | error (_("Alias %s is the name of an existing command"), alias); |
| 1717 | } |
| 1718 | } |
| 1719 | |
| 1720 | |
| 1721 | /* If ALIAS is one word, it is an alias for the entire COMMAND. |
| 1722 | Example: alias spe = set print elements |
| 1723 | |
| 1724 | Otherwise ALIAS and COMMAND must have the same number of words, |
| 1725 | and every word except the last must identify the same prefix command; |
| 1726 | and the last word of ALIAS is made an alias of the last word of COMMAND. |
| 1727 | Example: alias set print elms = set pr elem |
| 1728 | Note that unambiguous abbreviations are allowed. */ |
| 1729 | |
| 1730 | if (alias_argc == 1) |
| 1731 | { |
| 1732 | /* add_cmd requires *we* allocate space for name, hence the xstrdup. */ |
| 1733 | add_com_alias (xstrdup (alias_argv[0]), command, class_alias, |
| 1734 | abbrev_flag); |
| 1735 | } |
| 1736 | else |
| 1737 | { |
| 1738 | const char *alias_prefix, *command_prefix; |
| 1739 | struct cmd_list_element *c_alias, *c_command; |
| 1740 | |
| 1741 | if (alias_argc != command_argc) |
| 1742 | error (_("Mismatched command length between ALIAS and COMMAND.")); |
| 1743 | |
| 1744 | /* Create copies of ALIAS and COMMAND without the last word, |
| 1745 | and use that to verify the leading elements give the same |
| 1746 | prefix command. */ |
| 1747 | std::string alias_prefix_string (argv_to_string (alias_argv, |
| 1748 | alias_argc - 1)); |
| 1749 | std::string command_prefix_string (argv_to_string (command_argv.get (), |
| 1750 | command_argc - 1)); |
| 1751 | alias_prefix = alias_prefix_string.c_str (); |
| 1752 | command_prefix = command_prefix_string.c_str (); |
| 1753 | |
| 1754 | c_command = lookup_cmd_1 (& command_prefix, cmdlist, NULL, 1); |
| 1755 | /* We've already tried to look up COMMAND. */ |
| 1756 | gdb_assert (c_command != NULL |
| 1757 | && c_command != (struct cmd_list_element *) -1); |
| 1758 | gdb_assert (c_command->prefixlist != NULL); |
| 1759 | c_alias = lookup_cmd_1 (& alias_prefix, cmdlist, NULL, 1); |
| 1760 | if (c_alias != c_command) |
| 1761 | error (_("ALIAS and COMMAND prefixes do not match.")); |
| 1762 | |
| 1763 | /* add_cmd requires *we* allocate space for name, hence the xstrdup. */ |
| 1764 | add_alias_cmd (xstrdup (alias_argv[alias_argc - 1]), |
| 1765 | command_argv[command_argc - 1], |
| 1766 | class_alias, abbrev_flag, c_command->prefixlist); |
| 1767 | } |
| 1768 | } |
| 1769 | \f |
| 1770 | /* Print the file / line number / symbol name of the location |
| 1771 | specified by SAL. */ |
| 1772 | |
| 1773 | static void |
| 1774 | print_sal_location (const symtab_and_line &sal) |
| 1775 | { |
| 1776 | scoped_restore_current_program_space restore_pspace; |
| 1777 | set_current_program_space (sal.pspace); |
| 1778 | |
| 1779 | const char *sym_name = NULL; |
| 1780 | if (sal.symbol != NULL) |
| 1781 | sym_name = sal.symbol->print_name (); |
| 1782 | printf_filtered (_("file: \"%s\", line number: %d, symbol: \"%s\"\n"), |
| 1783 | symtab_to_filename_for_display (sal.symtab), |
| 1784 | sal.line, sym_name != NULL ? sym_name : "???"); |
| 1785 | } |
| 1786 | |
| 1787 | /* Print a list of files and line numbers which a user may choose from |
| 1788 | in order to list a function which was specified ambiguously (as |
| 1789 | with `list classname::overloadedfuncname', for example). The SALS |
| 1790 | array provides the filenames and line numbers. FORMAT is a |
| 1791 | printf-style format string used to tell the user what was |
| 1792 | ambiguous. */ |
| 1793 | |
| 1794 | static void |
| 1795 | ambiguous_line_spec (gdb::array_view<const symtab_and_line> sals, |
| 1796 | const char *format, ...) |
| 1797 | { |
| 1798 | va_list ap; |
| 1799 | va_start (ap, format); |
| 1800 | vprintf_filtered (format, ap); |
| 1801 | va_end (ap); |
| 1802 | |
| 1803 | for (const auto &sal : sals) |
| 1804 | print_sal_location (sal); |
| 1805 | } |
| 1806 | |
| 1807 | /* Comparison function for filter_sals. Returns a qsort-style |
| 1808 | result. */ |
| 1809 | |
| 1810 | static int |
| 1811 | cmp_symtabs (const symtab_and_line &sala, const symtab_and_line &salb) |
| 1812 | { |
| 1813 | const char *dira = SYMTAB_DIRNAME (sala.symtab); |
| 1814 | const char *dirb = SYMTAB_DIRNAME (salb.symtab); |
| 1815 | int r; |
| 1816 | |
| 1817 | if (dira == NULL) |
| 1818 | { |
| 1819 | if (dirb != NULL) |
| 1820 | return -1; |
| 1821 | } |
| 1822 | else if (dirb == NULL) |
| 1823 | { |
| 1824 | if (dira != NULL) |
| 1825 | return 1; |
| 1826 | } |
| 1827 | else |
| 1828 | { |
| 1829 | r = filename_cmp (dira, dirb); |
| 1830 | if (r) |
| 1831 | return r; |
| 1832 | } |
| 1833 | |
| 1834 | r = filename_cmp (sala.symtab->filename, salb.symtab->filename); |
| 1835 | if (r) |
| 1836 | return r; |
| 1837 | |
| 1838 | if (sala.line < salb.line) |
| 1839 | return -1; |
| 1840 | return sala.line == salb.line ? 0 : 1; |
| 1841 | } |
| 1842 | |
| 1843 | /* Remove any SALs that do not match the current program space, or |
| 1844 | which appear to be "file:line" duplicates. */ |
| 1845 | |
| 1846 | static void |
| 1847 | filter_sals (std::vector<symtab_and_line> &sals) |
| 1848 | { |
| 1849 | /* Remove SALs that do not match. */ |
| 1850 | auto from = std::remove_if (sals.begin (), sals.end (), |
| 1851 | [&] (const symtab_and_line &sal) |
| 1852 | { return (sal.pspace != current_program_space || sal.symtab == NULL); }); |
| 1853 | |
| 1854 | /* Remove dups. */ |
| 1855 | std::sort (sals.begin (), from, |
| 1856 | [] (const symtab_and_line &sala, const symtab_and_line &salb) |
| 1857 | { return cmp_symtabs (sala, salb) < 0; }); |
| 1858 | |
| 1859 | from = std::unique (sals.begin (), from, |
| 1860 | [&] (const symtab_and_line &sala, |
| 1861 | const symtab_and_line &salb) |
| 1862 | { return cmp_symtabs (sala, salb) == 0; }); |
| 1863 | |
| 1864 | sals.erase (from, sals.end ()); |
| 1865 | } |
| 1866 | |
| 1867 | void |
| 1868 | init_cmd_lists (void) |
| 1869 | { |
| 1870 | max_user_call_depth = 1024; |
| 1871 | } |
| 1872 | |
| 1873 | static void |
| 1874 | show_info_verbose (struct ui_file *file, int from_tty, |
| 1875 | struct cmd_list_element *c, |
| 1876 | const char *value) |
| 1877 | { |
| 1878 | if (info_verbose) |
| 1879 | fprintf_filtered (file, |
| 1880 | _("Verbose printing of informational messages is %s.\n"), |
| 1881 | value); |
| 1882 | else |
| 1883 | fprintf_filtered (file, _("Verbosity is %s.\n"), value); |
| 1884 | } |
| 1885 | |
| 1886 | static void |
| 1887 | show_history_expansion_p (struct ui_file *file, int from_tty, |
| 1888 | struct cmd_list_element *c, const char *value) |
| 1889 | { |
| 1890 | fprintf_filtered (file, _("History expansion on command input is %s.\n"), |
| 1891 | value); |
| 1892 | } |
| 1893 | |
| 1894 | static void |
| 1895 | show_remote_debug (struct ui_file *file, int from_tty, |
| 1896 | struct cmd_list_element *c, const char *value) |
| 1897 | { |
| 1898 | fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"), |
| 1899 | value); |
| 1900 | } |
| 1901 | |
| 1902 | static void |
| 1903 | show_remote_timeout (struct ui_file *file, int from_tty, |
| 1904 | struct cmd_list_element *c, const char *value) |
| 1905 | { |
| 1906 | fprintf_filtered (file, |
| 1907 | _("Timeout limit to wait for target to respond is %s.\n"), |
| 1908 | value); |
| 1909 | } |
| 1910 | |
| 1911 | static void |
| 1912 | show_max_user_call_depth (struct ui_file *file, int from_tty, |
| 1913 | struct cmd_list_element *c, const char *value) |
| 1914 | { |
| 1915 | fprintf_filtered (file, |
| 1916 | _("The max call depth for user-defined commands is %s.\n"), |
| 1917 | value); |
| 1918 | } |
| 1919 | |
| 1920 | /* Returns the cmd_list_element in SHOWLIST corresponding to the first |
| 1921 | argument of ARGV, which must contain one single value. |
| 1922 | Throws an error if no value provided, or value not correct. |
| 1923 | FNNAME is used in the error message. */ |
| 1924 | |
| 1925 | static cmd_list_element * |
| 1926 | setting_cmd (const char *fnname, struct cmd_list_element *showlist, |
| 1927 | int argc, struct value **argv) |
| 1928 | { |
| 1929 | if (argc == 0) |
| 1930 | error (_("You must provide an argument to %s"), fnname); |
| 1931 | if (argc != 1) |
| 1932 | error (_("You can only provide one argument to %s"), fnname); |
| 1933 | |
| 1934 | struct type *type0 = check_typedef (value_type (argv[0])); |
| 1935 | |
| 1936 | if (type0->code () != TYPE_CODE_ARRAY |
| 1937 | && type0->code () != TYPE_CODE_STRING) |
| 1938 | error (_("First argument of %s must be a string."), fnname); |
| 1939 | |
| 1940 | const char *a0 = (const char *) value_contents (argv[0]); |
| 1941 | cmd_list_element *cmd = lookup_cmd (&a0, showlist, "", -1, 0); |
| 1942 | |
| 1943 | if (cmd == nullptr || cmd_type (cmd) != show_cmd) |
| 1944 | error (_("First argument of %s must be a " |
| 1945 | "valid setting of the 'show' command."), fnname); |
| 1946 | |
| 1947 | return cmd; |
| 1948 | } |
| 1949 | |
| 1950 | /* Builds a value from the show CMD. */ |
| 1951 | |
| 1952 | static struct value * |
| 1953 | value_from_setting (const cmd_list_element *cmd, struct gdbarch *gdbarch) |
| 1954 | { |
| 1955 | switch (cmd->var_type) |
| 1956 | { |
| 1957 | case var_integer: |
| 1958 | if (*(int *) cmd->var == INT_MAX) |
| 1959 | return value_from_longest (builtin_type (gdbarch)->builtin_int, |
| 1960 | 0); |
| 1961 | else |
| 1962 | return value_from_longest (builtin_type (gdbarch)->builtin_int, |
| 1963 | *(int *) cmd->var); |
| 1964 | case var_zinteger: |
| 1965 | return value_from_longest (builtin_type (gdbarch)->builtin_int, |
| 1966 | *(int *) cmd->var); |
| 1967 | case var_boolean: |
| 1968 | return value_from_longest (builtin_type (gdbarch)->builtin_int, |
| 1969 | *(bool *) cmd->var ? 1 : 0); |
| 1970 | case var_zuinteger_unlimited: |
| 1971 | return value_from_longest (builtin_type (gdbarch)->builtin_int, |
| 1972 | *(int *) cmd->var); |
| 1973 | case var_auto_boolean: |
| 1974 | { |
| 1975 | int val; |
| 1976 | |
| 1977 | switch (*(enum auto_boolean*) cmd->var) |
| 1978 | { |
| 1979 | case AUTO_BOOLEAN_TRUE: |
| 1980 | val = 1; |
| 1981 | break; |
| 1982 | case AUTO_BOOLEAN_FALSE: |
| 1983 | val = 0; |
| 1984 | break; |
| 1985 | case AUTO_BOOLEAN_AUTO: |
| 1986 | val = -1; |
| 1987 | break; |
| 1988 | default: |
| 1989 | gdb_assert_not_reached ("invalid var_auto_boolean"); |
| 1990 | } |
| 1991 | return value_from_longest (builtin_type (gdbarch)->builtin_int, |
| 1992 | val); |
| 1993 | } |
| 1994 | case var_uinteger: |
| 1995 | if (*(unsigned int *) cmd->var == UINT_MAX) |
| 1996 | return value_from_ulongest |
| 1997 | (builtin_type (gdbarch)->builtin_unsigned_int, 0); |
| 1998 | else |
| 1999 | return value_from_ulongest |
| 2000 | (builtin_type (gdbarch)->builtin_unsigned_int, |
| 2001 | *(unsigned int *) cmd->var); |
| 2002 | case var_zuinteger: |
| 2003 | return value_from_ulongest (builtin_type (gdbarch)->builtin_unsigned_int, |
| 2004 | *(unsigned int *) cmd->var); |
| 2005 | case var_string: |
| 2006 | case var_string_noescape: |
| 2007 | case var_optional_filename: |
| 2008 | case var_filename: |
| 2009 | case var_enum: |
| 2010 | if (*(char **) cmd->var) |
| 2011 | return value_cstring (*(char **) cmd->var, strlen (*(char **) cmd->var), |
| 2012 | builtin_type (gdbarch)->builtin_char); |
| 2013 | else |
| 2014 | return value_cstring ("", 1, |
| 2015 | builtin_type (gdbarch)->builtin_char); |
| 2016 | default: |
| 2017 | gdb_assert_not_reached ("bad var_type"); |
| 2018 | } |
| 2019 | } |
| 2020 | |
| 2021 | /* Implementation of the convenience function $_gdb_setting. */ |
| 2022 | |
| 2023 | static struct value * |
| 2024 | gdb_setting_internal_fn (struct gdbarch *gdbarch, |
| 2025 | const struct language_defn *language, |
| 2026 | void *cookie, int argc, struct value **argv) |
| 2027 | { |
| 2028 | return value_from_setting (setting_cmd ("$_gdb_setting", showlist, |
| 2029 | argc, argv), |
| 2030 | gdbarch); |
| 2031 | } |
| 2032 | |
| 2033 | /* Implementation of the convenience function $_gdb_maint_setting. */ |
| 2034 | |
| 2035 | static struct value * |
| 2036 | gdb_maint_setting_internal_fn (struct gdbarch *gdbarch, |
| 2037 | const struct language_defn *language, |
| 2038 | void *cookie, int argc, struct value **argv) |
| 2039 | { |
| 2040 | return value_from_setting (setting_cmd ("$_gdb_maint_setting", |
| 2041 | maintenance_show_cmdlist, |
| 2042 | argc, argv), |
| 2043 | gdbarch); |
| 2044 | } |
| 2045 | |
| 2046 | /* Builds a string value from the show CMD. */ |
| 2047 | |
| 2048 | static struct value * |
| 2049 | str_value_from_setting (const cmd_list_element *cmd, struct gdbarch *gdbarch) |
| 2050 | { |
| 2051 | switch (cmd->var_type) |
| 2052 | { |
| 2053 | case var_integer: |
| 2054 | case var_zinteger: |
| 2055 | case var_boolean: |
| 2056 | case var_zuinteger_unlimited: |
| 2057 | case var_auto_boolean: |
| 2058 | case var_uinteger: |
| 2059 | case var_zuinteger: |
| 2060 | { |
| 2061 | std::string cmd_val = get_setshow_command_value_string (cmd); |
| 2062 | |
| 2063 | return value_cstring (cmd_val.c_str (), cmd_val.size (), |
| 2064 | builtin_type (gdbarch)->builtin_char); |
| 2065 | } |
| 2066 | |
| 2067 | case var_string: |
| 2068 | case var_string_noescape: |
| 2069 | case var_optional_filename: |
| 2070 | case var_filename: |
| 2071 | case var_enum: |
| 2072 | /* For these cases, we do not use get_setshow_command_value_string, |
| 2073 | as this function handle some characters specially, e.g. by |
| 2074 | escaping quotes. So, we directly use the cmd->var string value, |
| 2075 | similarly to the value_from_setting code for these cases. */ |
| 2076 | if (*(char **) cmd->var) |
| 2077 | return value_cstring (*(char **) cmd->var, strlen (*(char **) cmd->var), |
| 2078 | builtin_type (gdbarch)->builtin_char); |
| 2079 | else |
| 2080 | return value_cstring ("", 1, |
| 2081 | builtin_type (gdbarch)->builtin_char); |
| 2082 | |
| 2083 | default: |
| 2084 | gdb_assert_not_reached ("bad var_type"); |
| 2085 | } |
| 2086 | } |
| 2087 | |
| 2088 | /* Implementation of the convenience function $_gdb_setting_str. */ |
| 2089 | |
| 2090 | static struct value * |
| 2091 | gdb_setting_str_internal_fn (struct gdbarch *gdbarch, |
| 2092 | const struct language_defn *language, |
| 2093 | void *cookie, int argc, struct value **argv) |
| 2094 | { |
| 2095 | return str_value_from_setting (setting_cmd ("$_gdb_setting_str", |
| 2096 | showlist, argc, argv), |
| 2097 | gdbarch); |
| 2098 | } |
| 2099 | |
| 2100 | |
| 2101 | /* Implementation of the convenience function $_gdb_maint_setting_str. */ |
| 2102 | |
| 2103 | static struct value * |
| 2104 | gdb_maint_setting_str_internal_fn (struct gdbarch *gdbarch, |
| 2105 | const struct language_defn *language, |
| 2106 | void *cookie, int argc, struct value **argv) |
| 2107 | { |
| 2108 | return str_value_from_setting (setting_cmd ("$_gdb_maint_setting_str", |
| 2109 | maintenance_show_cmdlist, |
| 2110 | argc, argv), |
| 2111 | gdbarch); |
| 2112 | } |
| 2113 | |
| 2114 | void _initialize_cli_cmds (); |
| 2115 | void |
| 2116 | _initialize_cli_cmds () |
| 2117 | { |
| 2118 | struct cmd_list_element *c; |
| 2119 | |
| 2120 | /* Define the classes of commands. |
| 2121 | They will appear in the help list in alphabetical order. */ |
| 2122 | |
| 2123 | add_cmd ("internals", class_maintenance, _("\ |
| 2124 | Maintenance commands.\n\ |
| 2125 | Some gdb commands are provided just for use by gdb maintainers.\n\ |
| 2126 | These commands are subject to frequent change, and may not be as\n\ |
| 2127 | well documented as user commands."), |
| 2128 | &cmdlist); |
| 2129 | add_cmd ("obscure", class_obscure, _("Obscure features."), &cmdlist); |
| 2130 | add_cmd ("aliases", class_alias, |
| 2131 | _("Aliases of other commands."), &cmdlist); |
| 2132 | add_cmd ("user-defined", class_user, _("\ |
| 2133 | User-defined commands.\n\ |
| 2134 | The commands in this class are those defined by the user.\n\ |
| 2135 | Use the \"define\" command to define a command."), &cmdlist); |
| 2136 | add_cmd ("support", class_support, _("Support facilities."), &cmdlist); |
| 2137 | if (!dbx_commands) |
| 2138 | add_cmd ("status", class_info, _("Status inquiries."), &cmdlist); |
| 2139 | add_cmd ("files", class_files, _("Specifying and examining files."), |
| 2140 | &cmdlist); |
| 2141 | add_cmd ("breakpoints", class_breakpoint, |
| 2142 | _("Making program stop at certain points."), &cmdlist); |
| 2143 | add_cmd ("data", class_vars, _("Examining data."), &cmdlist); |
| 2144 | add_cmd ("stack", class_stack, _("\ |
| 2145 | Examining the stack.\n\ |
| 2146 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ |
| 2147 | counting from zero for the innermost (currently executing) frame.\n\n\ |
| 2148 | At any time gdb identifies one frame as the \"selected\" frame.\n\ |
| 2149 | Variable lookups are done with respect to the selected frame.\n\ |
| 2150 | When the program being debugged stops, gdb selects the innermost frame.\n\ |
| 2151 | The commands below can be used to select other frames by number or address."), |
| 2152 | &cmdlist); |
| 2153 | #ifdef TUI |
| 2154 | add_cmd ("text-user-interface", class_tui, |
| 2155 | _("TUI is the GDB text based interface.\n\ |
| 2156 | In TUI mode, GDB can display several text windows showing\n\ |
| 2157 | the source file, the processor registers, the program disassembly, ..."), &cmdlist); |
| 2158 | #endif |
| 2159 | add_cmd ("running", class_run, _("Running the program."), &cmdlist); |
| 2160 | |
| 2161 | /* Define general commands. */ |
| 2162 | |
| 2163 | add_com ("pwd", class_files, pwd_command, _("\ |
| 2164 | Print working directory.\n\ |
| 2165 | This is used for your program as well.")); |
| 2166 | |
| 2167 | c = add_cmd ("cd", class_files, cd_command, _("\ |
| 2168 | Set working directory to DIR for debugger.\n\ |
| 2169 | The debugger's current working directory specifies where scripts and other\n\ |
| 2170 | files that can be loaded by GDB are located.\n\ |
| 2171 | In order to change the inferior's current working directory, the recommended\n\ |
| 2172 | way is to use the \"set cwd\" command."), &cmdlist); |
| 2173 | set_cmd_completer (c, filename_completer); |
| 2174 | |
| 2175 | add_com ("echo", class_support, echo_command, _("\ |
| 2176 | Print a constant string. Give string as argument.\n\ |
| 2177 | C escape sequences may be used in the argument.\n\ |
| 2178 | No newline is added at the end of the argument;\n\ |
| 2179 | use \"\\n\" if you want a newline to be printed.\n\ |
| 2180 | Since leading and trailing whitespace are ignored in command arguments,\n\ |
| 2181 | if you want to print some you must use \"\\\" before leading whitespace\n\ |
| 2182 | to be printed or after trailing whitespace.")); |
| 2183 | |
| 2184 | add_setshow_enum_cmd ("script-extension", class_support, |
| 2185 | script_ext_enums, &script_ext_mode, _("\ |
| 2186 | Set mode for script filename extension recognition."), _("\ |
| 2187 | Show mode for script filename extension recognition."), _("\ |
| 2188 | off == no filename extension recognition (all sourced files are GDB scripts)\n\ |
| 2189 | soft == evaluate script according to filename extension, fallback to GDB script" |
| 2190 | "\n\ |
| 2191 | strict == evaluate script according to filename extension, error if not supported" |
| 2192 | ), |
| 2193 | NULL, |
| 2194 | show_script_ext_mode, |
| 2195 | &setlist, &showlist); |
| 2196 | |
| 2197 | add_com ("quit", class_support, quit_command, _("\ |
| 2198 | Exit gdb.\n\ |
| 2199 | Usage: quit [EXPR]\n\ |
| 2200 | The optional expression EXPR, if present, is evaluated and the result\n\ |
| 2201 | used as GDB's exit code. The default is zero.")); |
| 2202 | c = add_com ("help", class_support, help_command, |
| 2203 | _("Print list of commands.")); |
| 2204 | set_cmd_completer (c, command_completer); |
| 2205 | add_com_alias ("q", "quit", class_support, 1); |
| 2206 | add_com_alias ("h", "help", class_support, 1); |
| 2207 | |
| 2208 | add_setshow_boolean_cmd ("verbose", class_support, &info_verbose, _("\ |
| 2209 | Set verbosity."), _("\ |
| 2210 | Show verbosity."), NULL, |
| 2211 | set_verbose, |
| 2212 | show_info_verbose, |
| 2213 | &setlist, &showlist); |
| 2214 | |
| 2215 | add_basic_prefix_cmd ("history", class_support, _("\ |
| 2216 | Generic command for setting command history parameters."), |
| 2217 | &sethistlist, "set history ", 0, &setlist); |
| 2218 | add_show_prefix_cmd ("history", class_support, _("\ |
| 2219 | Generic command for showing command history parameters."), |
| 2220 | &showhistlist, "show history ", 0, &showlist); |
| 2221 | |
| 2222 | add_setshow_boolean_cmd ("expansion", no_class, &history_expansion_p, _("\ |
| 2223 | Set history expansion on command input."), _("\ |
| 2224 | Show history expansion on command input."), _("\ |
| 2225 | Without an argument, history expansion is enabled."), |
| 2226 | NULL, |
| 2227 | show_history_expansion_p, |
| 2228 | &sethistlist, &showhistlist); |
| 2229 | |
| 2230 | add_prefix_cmd ("info", class_info, info_command, _("\ |
| 2231 | Generic command for showing things about the program being debugged."), |
| 2232 | &infolist, "info ", 0, &cmdlist); |
| 2233 | add_com_alias ("i", "info", class_info, 1); |
| 2234 | add_com_alias ("inf", "info", class_info, 1); |
| 2235 | |
| 2236 | add_com ("complete", class_obscure, complete_command, |
| 2237 | _("List the completions for the rest of the line as a command.")); |
| 2238 | |
| 2239 | c = add_show_prefix_cmd ("show", class_info, _("\ |
| 2240 | Generic command for showing things about the debugger."), |
| 2241 | &showlist, "show ", 0, &cmdlist); |
| 2242 | /* Another way to get at the same thing. */ |
| 2243 | add_alias_cmd ("set", c, class_info, 0, &infolist); |
| 2244 | |
| 2245 | c = add_com ("with", class_vars, with_command, _("\ |
| 2246 | Temporarily set SETTING to VALUE, run COMMAND, and restore SETTING.\n\ |
| 2247 | Usage: with SETTING [VALUE] [-- COMMAND]\n\ |
| 2248 | Usage: w SETTING [VALUE] [-- COMMAND]\n\ |
| 2249 | With no COMMAND, repeats the last executed command.\n\ |
| 2250 | \n\ |
| 2251 | SETTING is any setting you can change with the \"set\" subcommands.\n\ |
| 2252 | E.g.:\n\ |
| 2253 | with language pascal -- print obj\n\ |
| 2254 | with print elements unlimited -- print obj\n\ |
| 2255 | \n\ |
| 2256 | You can change multiple settings using nested with, and use\n\ |
| 2257 | abbreviations for commands and/or values. E.g.:\n\ |
| 2258 | w la p -- w p el u -- p obj")); |
| 2259 | set_cmd_completer_handle_brkchars (c, with_command_completer); |
| 2260 | add_com_alias ("w", "with", class_vars, 1); |
| 2261 | |
| 2262 | add_internal_function ("_gdb_setting_str", _("\ |
| 2263 | $_gdb_setting_str - returns the value of a GDB setting as a string.\n\ |
| 2264 | Usage: $_gdb_setting_str (setting)\n\ |
| 2265 | \n\ |
| 2266 | auto-boolean values are \"off\", \"on\", \"auto\".\n\ |
| 2267 | boolean values are \"off\", \"on\".\n\ |
| 2268 | Some integer settings accept an unlimited value, returned\n\ |
| 2269 | as \"unlimited\"."), |
| 2270 | gdb_setting_str_internal_fn, NULL); |
| 2271 | |
| 2272 | add_internal_function ("_gdb_setting", _("\ |
| 2273 | $_gdb_setting - returns the value of a GDB setting.\n\ |
| 2274 | Usage: $_gdb_setting (setting)\n\ |
| 2275 | auto-boolean values are \"off\", \"on\", \"auto\".\n\ |
| 2276 | boolean values are \"off\", \"on\".\n\ |
| 2277 | Some integer settings accept an unlimited value, returned\n\ |
| 2278 | as 0 or -1 depending on the setting."), |
| 2279 | gdb_setting_internal_fn, NULL); |
| 2280 | |
| 2281 | add_internal_function ("_gdb_maint_setting_str", _("\ |
| 2282 | $_gdb_maint_setting_str - returns the value of a GDB maintenance setting as a string.\n\ |
| 2283 | Usage: $_gdb_maint_setting_str (setting)\n\ |
| 2284 | \n\ |
| 2285 | auto-boolean values are \"off\", \"on\", \"auto\".\n\ |
| 2286 | boolean values are \"off\", \"on\".\n\ |
| 2287 | Some integer settings accept an unlimited value, returned\n\ |
| 2288 | as \"unlimited\"."), |
| 2289 | gdb_maint_setting_str_internal_fn, NULL); |
| 2290 | |
| 2291 | add_internal_function ("_gdb_maint_setting", _("\ |
| 2292 | $_gdb_maint_setting - returns the value of a GDB maintenance setting.\n\ |
| 2293 | Usage: $_gdb_maint_setting (setting)\n\ |
| 2294 | auto-boolean values are \"off\", \"on\", \"auto\".\n\ |
| 2295 | boolean values are \"off\", \"on\".\n\ |
| 2296 | Some integer settings accept an unlimited value, returned\n\ |
| 2297 | as 0 or -1 depending on the setting."), |
| 2298 | gdb_maint_setting_internal_fn, NULL); |
| 2299 | |
| 2300 | add_cmd ("commands", no_set_class, show_commands, _("\ |
| 2301 | Show the history of commands you typed.\n\ |
| 2302 | You can supply a command number to start with, or a `+' to start after\n\ |
| 2303 | the previous command number shown."), |
| 2304 | &showlist); |
| 2305 | |
| 2306 | add_cmd ("version", no_set_class, show_version, |
| 2307 | _("Show what version of GDB this is."), &showlist); |
| 2308 | |
| 2309 | add_cmd ("configuration", no_set_class, show_configuration, |
| 2310 | _("Show how GDB was configured at build time."), &showlist); |
| 2311 | |
| 2312 | add_setshow_zinteger_cmd ("remote", no_class, &remote_debug, _("\ |
| 2313 | Set debugging of remote protocol."), _("\ |
| 2314 | Show debugging of remote protocol."), _("\ |
| 2315 | When enabled, each packet sent or received with the remote target\n\ |
| 2316 | is displayed."), |
| 2317 | NULL, |
| 2318 | show_remote_debug, |
| 2319 | &setdebuglist, &showdebuglist); |
| 2320 | |
| 2321 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, |
| 2322 | &remote_timeout, _("\ |
| 2323 | Set timeout limit to wait for target to respond."), _("\ |
| 2324 | Show timeout limit to wait for target to respond."), _("\ |
| 2325 | This value is used to set the time limit for gdb to wait for a response\n\ |
| 2326 | from the target."), |
| 2327 | NULL, |
| 2328 | show_remote_timeout, |
| 2329 | &setlist, &showlist); |
| 2330 | |
| 2331 | add_basic_prefix_cmd ("debug", no_class, |
| 2332 | _("Generic command for setting gdb debugging flags."), |
| 2333 | &setdebuglist, "set debug ", 0, &setlist); |
| 2334 | |
| 2335 | add_show_prefix_cmd ("debug", no_class, |
| 2336 | _("Generic command for showing gdb debugging flags."), |
| 2337 | &showdebuglist, "show debug ", 0, &showlist); |
| 2338 | |
| 2339 | c = add_com ("shell", class_support, shell_command, _("\ |
| 2340 | Execute the rest of the line as a shell command.\n\ |
| 2341 | With no arguments, run an inferior shell.")); |
| 2342 | set_cmd_completer (c, filename_completer); |
| 2343 | |
| 2344 | add_com_alias ("!", "shell", class_support, 0); |
| 2345 | |
| 2346 | c = add_com ("edit", class_files, edit_command, _("\ |
| 2347 | Edit specified file or function.\n\ |
| 2348 | With no argument, edits file containing most recent line listed.\n\ |
| 2349 | Editing targets can be specified in these ways:\n\ |
| 2350 | FILE:LINENUM, to edit at that line in that file,\n\ |
| 2351 | FUNCTION, to edit at the beginning of that function,\n\ |
| 2352 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ |
| 2353 | *ADDRESS, to edit at the line containing that address.\n\ |
| 2354 | Uses EDITOR environment variable contents as editor (or ex as default).")); |
| 2355 | |
| 2356 | c->completer = location_completer; |
| 2357 | |
| 2358 | c = add_com ("pipe", class_support, pipe_command, _("\ |
| 2359 | Send the output of a gdb command to a shell command.\n\ |
| 2360 | Usage: | [COMMAND] | SHELL_COMMAND\n\ |
| 2361 | Usage: | -d DELIM COMMAND DELIM SHELL_COMMAND\n\ |
| 2362 | Usage: pipe [COMMAND] | SHELL_COMMAND\n\ |
| 2363 | Usage: pipe -d DELIM COMMAND DELIM SHELL_COMMAND\n\ |
| 2364 | \n\ |
| 2365 | Executes COMMAND and sends its output to SHELL_COMMAND.\n\ |
| 2366 | \n\ |
| 2367 | The -d option indicates to use the string DELIM to separate COMMAND\n\ |
| 2368 | from SHELL_COMMAND, in alternative to |. This is useful in\n\ |
| 2369 | case COMMAND contains a | character.\n\ |
| 2370 | \n\ |
| 2371 | With no COMMAND, repeat the last executed command\n\ |
| 2372 | and send its output to SHELL_COMMAND.")); |
| 2373 | set_cmd_completer_handle_brkchars (c, pipe_command_completer); |
| 2374 | add_com_alias ("|", "pipe", class_support, 0); |
| 2375 | |
| 2376 | add_com ("list", class_files, list_command, _("\ |
| 2377 | List specified function or line.\n\ |
| 2378 | With no argument, lists ten more lines after or around previous listing.\n\ |
| 2379 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ |
| 2380 | One argument specifies a line, and ten lines are listed around that line.\n\ |
| 2381 | Two arguments with comma between specify starting and ending lines to list.\n\ |
| 2382 | Lines can be specified in these ways:\n\ |
| 2383 | LINENUM, to list around that line in current file,\n\ |
| 2384 | FILE:LINENUM, to list around that line in that file,\n\ |
| 2385 | FUNCTION, to list around beginning of that function,\n\ |
| 2386 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ |
| 2387 | *ADDRESS, to list around the line containing that address.\n\ |
| 2388 | With two args, if one is empty, it stands for ten lines away from\n\ |
| 2389 | the other arg.\n\ |
| 2390 | \n\ |
| 2391 | By default, when a single location is given, display ten lines.\n\ |
| 2392 | This can be changed using \"set listsize\", and the current value\n\ |
| 2393 | can be shown using \"show listsize\".")); |
| 2394 | |
| 2395 | add_com_alias ("l", "list", class_files, 1); |
| 2396 | |
| 2397 | if (dbx_commands) |
| 2398 | add_com_alias ("file", "list", class_files, 1); |
| 2399 | |
| 2400 | c = add_com ("disassemble", class_vars, disassemble_command, _("\ |
| 2401 | Disassemble a specified section of memory.\n\ |
| 2402 | Default is the function surrounding the pc of the selected frame.\n\ |
| 2403 | \n\ |
| 2404 | With a /m modifier, source lines are included (if available).\n\ |
| 2405 | This view is \"source centric\": the output is in source line order,\n\ |
| 2406 | regardless of any optimization that is present. Only the main source file\n\ |
| 2407 | is displayed, not those of, e.g., any inlined functions.\n\ |
| 2408 | This modifier hasn't proved useful in practice and is deprecated\n\ |
| 2409 | in favor of /s.\n\ |
| 2410 | \n\ |
| 2411 | With a /s modifier, source lines are included (if available).\n\ |
| 2412 | This differs from /m in two important respects:\n\ |
| 2413 | - the output is still in pc address order, and\n\ |
| 2414 | - file names and contents for all relevant source files are displayed.\n\ |
| 2415 | \n\ |
| 2416 | With a /r modifier, raw instructions in hex are included.\n\ |
| 2417 | \n\ |
| 2418 | With a single argument, the function surrounding that address is dumped.\n\ |
| 2419 | Two arguments (separated by a comma) are taken as a range of memory to dump,\n\ |
| 2420 | in the form of \"start,end\", or \"start,+length\".\n\ |
| 2421 | \n\ |
| 2422 | Note that the address is interpreted as an expression, not as a location\n\ |
| 2423 | like in the \"break\" command.\n\ |
| 2424 | So, for example, if you want to disassemble function bar in file foo.c\n\ |
| 2425 | you must type \"disassemble 'foo.c'::bar\" and not \"disassemble foo.c:bar\".")); |
| 2426 | set_cmd_completer (c, location_completer); |
| 2427 | |
| 2428 | c = add_com ("make", class_support, make_command, _("\ |
| 2429 | Run the ``make'' program using the rest of the line as arguments.")); |
| 2430 | set_cmd_completer (c, filename_completer); |
| 2431 | add_cmd ("user", no_class, show_user, _("\ |
| 2432 | Show definitions of non-python/scheme user defined commands.\n\ |
| 2433 | Argument is the name of the user defined command.\n\ |
| 2434 | With no argument, show definitions of all user defined commands."), &showlist); |
| 2435 | add_com ("apropos", class_support, apropos_command, _("\ |
| 2436 | Search for commands matching a REGEXP.\n\ |
| 2437 | Usage: apropos [-v] REGEXP\n\ |
| 2438 | Flag -v indicates to produce a verbose output, showing full documentation\n\ |
| 2439 | of the matching commands.")); |
| 2440 | |
| 2441 | add_setshow_uinteger_cmd ("max-user-call-depth", no_class, |
| 2442 | &max_user_call_depth, _("\ |
| 2443 | Set the max call depth for non-python/scheme user-defined commands."), _("\ |
| 2444 | Show the max call depth for non-python/scheme user-defined commands."), NULL, |
| 2445 | NULL, |
| 2446 | show_max_user_call_depth, |
| 2447 | &setlist, &showlist); |
| 2448 | |
| 2449 | add_setshow_boolean_cmd ("trace-commands", no_class, &trace_commands, _("\ |
| 2450 | Set tracing of GDB CLI commands."), _("\ |
| 2451 | Show state of GDB CLI command tracing."), _("\ |
| 2452 | When 'on', each command is displayed as it is executed."), |
| 2453 | NULL, |
| 2454 | NULL, |
| 2455 | &setlist, &showlist); |
| 2456 | |
| 2457 | c = add_com ("alias", class_support, alias_command, _("\ |
| 2458 | Define a new command that is an alias of an existing command.\n\ |
| 2459 | Usage: alias [-a] [--] ALIAS = COMMAND\n\ |
| 2460 | ALIAS is the name of the alias command to create.\n\ |
| 2461 | COMMAND is the command being aliased to.\n\ |
| 2462 | If \"-a\" is specified, the command is an abbreviation,\n\ |
| 2463 | and will not be used in command completion.\n\ |
| 2464 | \n\ |
| 2465 | Examples:\n\ |
| 2466 | Make \"spe\" an alias of \"set print elements\":\n\ |
| 2467 | alias spe = set print elements\n\ |
| 2468 | Make \"elms\" an alias of \"elements\" in the \"set print\" command:\n\ |
| 2469 | alias -a set print elms = set print elements")); |
| 2470 | |
| 2471 | const char *source_help_text = xstrprintf (_("\ |
| 2472 | Read commands from a file named FILE.\n\ |
| 2473 | \n\ |
| 2474 | Usage: source [-s] [-v] FILE\n\ |
| 2475 | -s: search for the script in the source search path,\n\ |
| 2476 | even if FILE contains directories.\n\ |
| 2477 | -v: each command in FILE is echoed as it is executed.\n\ |
| 2478 | \n\ |
| 2479 | Note that the file \"%s\" is read automatically in this way\n\ |
| 2480 | when GDB is started."), GDBINIT); |
| 2481 | c = add_cmd ("source", class_support, source_command, |
| 2482 | source_help_text, &cmdlist); |
| 2483 | set_cmd_completer (c, filename_completer); |
| 2484 | } |