1 /* GDB CLI commands. 2 3 Copyright (C) 2000-2005, 2007-2012 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 "exceptions.h" 22 #include "arch-utils.h" 23 #include "dyn-string.h" 24 #include "readline/readline.h" 25 #include "readline/tilde.h" 26 #include "completer.h" 27 #include "target.h" /* For baud_rate, remote_debug and remote_timeout. */ 28 #include "gdb_wait.h" /* For shell escape implementation. */ 29 #include "gdb_regex.h" /* Used by apropos_command. */ 30 #include "gdb_string.h" 31 #include "gdb_vfork.h" 32 #include "linespec.h" 33 #include "expression.h" 34 #include "frame.h" 35 #include "value.h" 36 #include "language.h" 37 #include "filenames.h" /* For DOSish file names. */ 38 #include "objfiles.h" 39 #include "source.h" 40 #include "disasm.h" 41 #include "tracepoint.h" 42 43 #include "ui-out.h" 44 45 #include "top.h" 46 #include "cli/cli-decode.h" 47 #include "cli/cli-script.h" 48 #include "cli/cli-setshow.h" 49 #include "cli/cli-cmds.h" 50 51 #include "python/python.h" 52 53 #ifdef TUI 54 #include "tui/tui.h" /* For tui_active et.al. */ 55 #endif 56 57 #include <fcntl.h> 58 59 /* Prototypes for local command functions */ 60 61 static void complete_command (char *, int); 62 63 static void echo_command (char *, int); 64 65 static void pwd_command (char *, int); 66 67 static void show_version (char *, int); 68 69 static void help_command (char *, int); 70 71 static void show_command (char *, int); 72 73 static void info_command (char *, int); 74 75 static void show_debug (char *, int); 76 77 static void set_debug (char *, int); 78 79 static void show_user (char *, int); 80 81 static void make_command (char *, int); 82 83 static void shell_escape (char *, int); 84 85 static void edit_command (char *, int); 86 87 static void list_command (char *, int); 88 89 void apropos_command (char *, int); 90 91 /* Prototypes for local utility functions */ 92 93 static void ambiguous_line_spec (struct symtabs_and_lines *); 94 95 static void filter_sals (struct symtabs_and_lines *); 96 97 98 /* Limit the call depth of user-defined commands */ 99 int max_user_call_depth; 100 101 /* Define all cmd_list_elements. */ 102 103 /* Chain containing all defined commands. */ 104 105 struct cmd_list_element *cmdlist; 106 107 /* Chain containing all defined info subcommands. */ 108 109 struct cmd_list_element *infolist; 110 111 /* Chain containing all defined enable subcommands. */ 112 113 struct cmd_list_element *enablelist; 114 115 /* Chain containing all defined disable subcommands. */ 116 117 struct cmd_list_element *disablelist; 118 119 /* Chain containing all defined toggle subcommands. */ 120 121 struct cmd_list_element *togglelist; 122 123 /* Chain containing all defined stop subcommands. */ 124 125 struct cmd_list_element *stoplist; 126 127 /* Chain containing all defined delete subcommands. */ 128 129 struct cmd_list_element *deletelist; 130 131 /* Chain containing all defined detach subcommands. */ 132 133 struct cmd_list_element *detachlist; 134 135 /* Chain containing all defined kill subcommands. */ 136 137 struct cmd_list_element *killlist; 138 139 /* Chain containing all defined "enable breakpoint" subcommands. */ 140 141 struct cmd_list_element *enablebreaklist; 142 143 /* Chain containing all defined set subcommands */ 144 145 struct cmd_list_element *setlist; 146 147 /* Chain containing all defined unset subcommands */ 148 149 struct cmd_list_element *unsetlist; 150 151 /* Chain containing all defined show subcommands. */ 152 153 struct cmd_list_element *showlist; 154 155 /* Chain containing all defined \"set history\". */ 156 157 struct cmd_list_element *sethistlist; 158 159 /* Chain containing all defined \"show history\". */ 160 161 struct cmd_list_element *showhistlist; 162 163 /* Chain containing all defined \"unset history\". */ 164 165 struct cmd_list_element *unsethistlist; 166 167 /* Chain containing all defined maintenance subcommands. */ 168 169 struct cmd_list_element *maintenancelist; 170 171 /* Chain containing all defined "maintenance info" subcommands. */ 172 173 struct cmd_list_element *maintenanceinfolist; 174 175 /* Chain containing all defined "maintenance print" subcommands. */ 176 177 struct cmd_list_element *maintenanceprintlist; 178 179 struct cmd_list_element *setprintlist; 180 181 struct cmd_list_element *showprintlist; 182 183 struct cmd_list_element *setdebuglist; 184 185 struct cmd_list_element *showdebuglist; 186 187 struct cmd_list_element *setchecklist; 188 189 struct cmd_list_element *showchecklist; 190 191 struct cmd_list_element *skiplist; 192 193 /* Command tracing state. */ 194 195 int source_verbose = 0; 196 int trace_commands = 0; 197 198 /* 'script-extension' option support. */ 199 200 static const char script_ext_off[] = "off"; 201 static const char script_ext_soft[] = "soft"; 202 static const char script_ext_strict[] = "strict"; 203 204 static const char *script_ext_enums[] = { 205 script_ext_off, 206 script_ext_soft, 207 script_ext_strict, 208 NULL 209 }; 210 211 static const char *script_ext_mode = script_ext_soft; 212 213 /* Utility used everywhere when at least one argument is needed and 214 none is supplied. */ 215 216 void 217 error_no_arg (char *why) 218 { 219 error (_("Argument required (%s)."), why); 220 } 221 222 /* The "info" command is defined as a prefix, with allow_unknown = 0. 223 Therefore, its own definition is called only for "info" with no 224 args. */ 225 226 static void 227 info_command (char *arg, int from_tty) 228 { 229 printf_unfiltered (_("\"info\" must be followed by " 230 "the name of an info command.\n")); 231 help_list (infolist, "info ", -1, gdb_stdout); 232 } 233 234 /* The "show" command with no arguments shows all the settings. */ 235 236 static void 237 show_command (char *arg, int from_tty) 238 { 239 cmd_show_list (showlist, from_tty, ""); 240 } 241 242 /* Provide documentation on command or list given by COMMAND. FROM_TTY 243 is ignored. */ 244 245 static void 246 help_command (char *command, int from_tty) 247 { 248 help_cmd (command, gdb_stdout); 249 } 250 251 /* The "complete" command is used by Emacs to implement completion. */ 252 253 static void 254 complete_command (char *arg, int from_tty) 255 { 256 int argpoint; 257 char **completions, *point, *arg_prefix; 258 259 dont_repeat (); 260 261 if (arg == NULL) 262 arg = ""; 263 argpoint = strlen (arg); 264 265 /* complete_line assumes that its first argument is somewhere 266 within, and except for filenames at the beginning of, the word to 267 be completed. The following crude imitation of readline's 268 word-breaking tries to accomodate this. */ 269 point = arg + argpoint; 270 while (point > arg) 271 { 272 if (strchr (rl_completer_word_break_characters, point[-1]) != 0) 273 break; 274 point--; 275 } 276 277 arg_prefix = alloca (point - arg + 1); 278 memcpy (arg_prefix, arg, point - arg); 279 arg_prefix[point - arg] = 0; 280 281 completions = complete_line (point, arg, argpoint); 282 283 if (completions) 284 { 285 int item, size; 286 287 for (size = 0; completions[size]; ++size) 288 ; 289 qsort (completions, size, sizeof (char *), compare_strings); 290 291 /* We do extra processing here since we only want to print each 292 unique item once. */ 293 item = 0; 294 while (item < size) 295 { 296 int next_item; 297 298 printf_unfiltered ("%s%s\n", arg_prefix, completions[item]); 299 next_item = item + 1; 300 while (next_item < size 301 && ! strcmp (completions[item], completions[next_item])) 302 { 303 xfree (completions[next_item]); 304 ++next_item; 305 } 306 307 xfree (completions[item]); 308 item = next_item; 309 } 310 311 xfree (completions); 312 } 313 } 314 315 int 316 is_complete_command (struct cmd_list_element *c) 317 { 318 return cmd_cfunc_eq (c, complete_command); 319 } 320 321 static void 322 show_version (char *args, int from_tty) 323 { 324 immediate_quit++; 325 print_gdb_version (gdb_stdout); 326 printf_filtered ("\n"); 327 immediate_quit--; 328 } 329 330 /* Handle the quit command. */ 331 332 void 333 quit_command (char *args, int from_tty) 334 { 335 if (!quit_confirm ()) 336 error (_("Not confirmed.")); 337 338 disconnect_tracing (from_tty); 339 340 quit_force (args, from_tty); 341 } 342 343 static void 344 pwd_command (char *args, int from_tty) 345 { 346 if (args) 347 error (_("The \"pwd\" command does not take an argument: %s"), args); 348 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf))) 349 error (_("Error finding name of working directory: %s"), 350 safe_strerror (errno)); 351 352 if (strcmp (gdb_dirbuf, current_directory) != 0) 353 printf_unfiltered (_("Working directory %s\n (canonically %s).\n"), 354 current_directory, gdb_dirbuf); 355 else 356 printf_unfiltered (_("Working directory %s.\n"), current_directory); 357 } 358 359 void 360 cd_command (char *dir, int from_tty) 361 { 362 int len; 363 /* Found something other than leading repetitions of "/..". */ 364 int found_real_path; 365 char *p; 366 367 /* If the new directory is absolute, repeat is a no-op; if relative, 368 repeat might be useful but is more likely to be a mistake. */ 369 dont_repeat (); 370 371 if (dir == 0) 372 error_no_arg (_("new working directory")); 373 374 dir = tilde_expand (dir); 375 make_cleanup (xfree, dir); 376 377 if (chdir (dir) < 0) 378 perror_with_name (dir); 379 380 #ifdef HAVE_DOS_BASED_FILE_SYSTEM 381 /* There's too much mess with DOSish names like "d:", "d:.", 382 "d:./foo" etc. Instead of having lots of special #ifdef'ed code, 383 simply get the canonicalized name of the current directory. */ 384 dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); 385 #endif 386 387 len = strlen (dir); 388 if (IS_DIR_SEPARATOR (dir[len - 1])) 389 { 390 /* Remove the trailing slash unless this is a root directory 391 (including a drive letter on non-Unix systems). */ 392 if (!(len == 1) /* "/" */ 393 #ifdef HAVE_DOS_BASED_FILE_SYSTEM 394 && !(len == 3 && dir[1] == ':') /* "d:/" */ 395 #endif 396 ) 397 len--; 398 } 399 400 dir = savestring (dir, len); 401 if (IS_ABSOLUTE_PATH (dir)) 402 current_directory = dir; 403 else 404 { 405 if (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])) 406 current_directory = concat (current_directory, dir, (char *)NULL); 407 else 408 current_directory = concat (current_directory, SLASH_STRING, 409 dir, (char *)NULL); 410 xfree (dir); 411 } 412 413 /* Now simplify any occurrences of `.' and `..' in the pathname. */ 414 415 found_real_path = 0; 416 for (p = current_directory; *p;) 417 { 418 if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' 419 && (p[2] == 0 || IS_DIR_SEPARATOR (p[2]))) 420 strcpy (p, p + 2); 421 else if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' && p[2] == '.' 422 && (p[3] == 0 || IS_DIR_SEPARATOR (p[3]))) 423 { 424 if (found_real_path) 425 { 426 /* Search backwards for the directory just before the "/.." 427 and obliterate it and the "/..". */ 428 char *q = p; 429 430 while (q != current_directory && !IS_DIR_SEPARATOR (q[-1])) 431 --q; 432 433 if (q == current_directory) 434 /* current_directory is 435 a relative pathname ("can't happen"--leave it alone). */ 436 ++p; 437 else 438 { 439 strcpy (q - 1, p + 3); 440 p = q - 1; 441 } 442 } 443 else 444 /* We are dealing with leading repetitions of "/..", for 445 example "/../..", which is the Mach super-root. */ 446 p += 3; 447 } 448 else 449 { 450 found_real_path = 1; 451 ++p; 452 } 453 } 454 455 forget_cached_source_info (); 456 457 if (from_tty) 458 pwd_command ((char *) 0, 1); 459 } 460 461 /* Show the current value of the 'script-extension' option. */ 462 463 static void 464 show_script_ext_mode (struct ui_file *file, int from_tty, 465 struct cmd_list_element *c, const char *value) 466 { 467 fprintf_filtered (file, 468 _("Script filename extension recognition is \"%s\".\n"), 469 value); 470 } 471 472 /* Try to open SCRIPT_FILE. 473 If successful, the full path name is stored in *FULL_PATHP, 474 the stream is stored in *STREAMP, and return 1. 475 The caller is responsible for freeing *FULL_PATHP. 476 If not successful, return 0; errno is set for the last file 477 we tried to open. 478 479 If SEARCH_PATH is non-zero, and the file isn't found in cwd, 480 search for it in the source search path. 481 482 NOTE: This calls openp which uses xfullpath to compute the full path 483 instead of gdb_realpath. Symbolic links are not resolved. */ 484 485 int 486 find_and_open_script (const char *script_file, int search_path, 487 FILE **streamp, char **full_pathp) 488 { 489 char *file; 490 int fd; 491 struct cleanup *old_cleanups; 492 int search_flags = OPF_TRY_CWD_FIRST; 493 494 file = tilde_expand (script_file); 495 old_cleanups = make_cleanup (xfree, file); 496 497 if (search_path) 498 search_flags |= OPF_SEARCH_IN_PATH; 499 500 /* Search for and open 'file' on the search path used for source 501 files. Put the full location in *FULL_PATHP. */ 502 fd = openp (source_path, search_flags, 503 file, O_RDONLY, full_pathp); 504 505 if (fd == -1) 506 { 507 int save_errno = errno; 508 do_cleanups (old_cleanups); 509 errno = save_errno; 510 return 0; 511 } 512 513 do_cleanups (old_cleanups); 514 515 *streamp = fdopen (fd, FOPEN_RT); 516 return 1; 517 } 518 519 /* Load script FILE, which has already been opened as STREAM. 520 STREAM is closed before we return. */ 521 522 static void 523 source_script_from_stream (FILE *stream, const char *file) 524 { 525 if (script_ext_mode != script_ext_off 526 && strlen (file) > 3 && !strcmp (&file[strlen (file) - 3], ".py")) 527 { 528 volatile struct gdb_exception e; 529 530 TRY_CATCH (e, RETURN_MASK_ERROR) 531 { 532 /* The python support reopens the file using python functions, 533 so there's no point in passing STREAM here. */ 534 source_python_script (file); 535 } 536 if (e.reason < 0) 537 { 538 /* Should we fallback to ye olde GDB script mode? */ 539 if (script_ext_mode == script_ext_soft 540 && e.reason == RETURN_ERROR && e.error == UNSUPPORTED_ERROR) 541 { 542 fseek (stream, 0, SEEK_SET); 543 script_from_file (stream, (char*) file); 544 } 545 else 546 { 547 /* Nope, just punt. */ 548 fclose (stream); 549 throw_exception (e); 550 } 551 } 552 else 553 fclose (stream); 554 } 555 else 556 script_from_file (stream, file); 557 } 558 559 /* Worker to perform the "source" command. 560 Load script FILE. 561 If SEARCH_PATH is non-zero, and the file isn't found in cwd, 562 search for it in the source search path. */ 563 564 static void 565 source_script_with_search (const char *file, int from_tty, int search_path) 566 { 567 FILE *stream; 568 char *full_path; 569 struct cleanup *old_cleanups; 570 571 if (file == NULL || *file == 0) 572 error (_("source command requires file name of file to source.")); 573 574 if (!find_and_open_script (file, search_path, &stream, &full_path)) 575 { 576 /* The script wasn't found, or was otherwise inaccessible. 577 If the source command was invoked interactively, throw an 578 error. Otherwise (e.g. if it was invoked by a script), 579 silently ignore the error. */ 580 if (from_tty) 581 perror_with_name (file); 582 else 583 return; 584 } 585 586 old_cleanups = make_cleanup (xfree, full_path); 587 /* The python support reopens the file, so we need to pass full_path here 588 in case the file was found on the search path. It's useful to do this 589 anyway so that error messages show the actual file used. But only do 590 this if we (may have) used search_path, as printing the full path in 591 errors for the non-search case can be more noise than signal. */ 592 source_script_from_stream (stream, search_path ? full_path : file); 593 do_cleanups (old_cleanups); 594 } 595 596 /* Wrapper around source_script_with_search to export it to main.c 597 for use in loading .gdbinit scripts. */ 598 599 void 600 source_script (char *file, int from_tty) 601 { 602 source_script_with_search (file, from_tty, 0); 603 } 604 605 /* Return the source_verbose global variable to its previous state 606 on exit from the source command, by whatever means. */ 607 static void 608 source_verbose_cleanup (void *old_value) 609 { 610 source_verbose = *(int *)old_value; 611 xfree (old_value); 612 } 613 614 static void 615 source_command (char *args, int from_tty) 616 { 617 struct cleanup *old_cleanups; 618 char *file = args; 619 int *old_source_verbose = xmalloc (sizeof(int)); 620 int search_path = 0; 621 622 *old_source_verbose = source_verbose; 623 old_cleanups = make_cleanup (source_verbose_cleanup, 624 old_source_verbose); 625 626 /* -v causes the source command to run in verbose mode. 627 -s causes the file to be searched in the source search path, 628 even if the file name contains a '/'. 629 We still have to be able to handle filenames with spaces in a 630 backward compatible way, so buildargv is not appropriate. */ 631 632 if (args) 633 { 634 while (args[0] != '\0') 635 { 636 /* Make sure leading white space does not break the 637 comparisons. */ 638 while (isspace(args[0])) 639 args++; 640 641 if (args[0] != '-') 642 break; 643 644 if (args[1] == 'v' && isspace (args[2])) 645 { 646 source_verbose = 1; 647 648 /* Skip passed -v. */ 649 args = &args[3]; 650 } 651 else if (args[1] == 's' && isspace (args[2])) 652 { 653 search_path = 1; 654 655 /* Skip passed -s. */ 656 args = &args[3]; 657 } 658 else 659 break; 660 } 661 662 while (isspace (args[0])) 663 args++; 664 file = args; 665 } 666 667 source_script_with_search (file, from_tty, search_path); 668 669 do_cleanups (old_cleanups); 670 } 671 672 673 static void 674 echo_command (char *text, int from_tty) 675 { 676 char *p = text; 677 int c; 678 679 if (text) 680 while ((c = *p++) != '\0') 681 { 682 if (c == '\\') 683 { 684 /* \ at end of argument is used after spaces 685 so they won't be lost. */ 686 if (*p == 0) 687 return; 688 689 c = parse_escape (get_current_arch (), &p); 690 if (c >= 0) 691 printf_filtered ("%c", c); 692 } 693 else 694 printf_filtered ("%c", c); 695 } 696 697 /* Force this output to appear now. */ 698 wrap_here (""); 699 gdb_flush (gdb_stdout); 700 } 701 702 static void 703 shell_escape (char *arg, int from_tty) 704 { 705 #if defined(CANT_FORK) || \ 706 (!defined(HAVE_WORKING_VFORK) && !defined(HAVE_WORKING_FORK)) 707 /* If ARG is NULL, they want an inferior shell, but `system' just 708 reports if the shell is available when passed a NULL arg. */ 709 int rc = system (arg ? arg : ""); 710 711 if (!arg) 712 arg = "inferior shell"; 713 714 if (rc == -1) 715 { 716 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg, 717 safe_strerror (errno)); 718 gdb_flush (gdb_stderr); 719 } 720 else if (rc) 721 { 722 fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc); 723 gdb_flush (gdb_stderr); 724 } 725 #ifdef GLOBAL_CURDIR 726 /* Make sure to return to the directory GDB thinks it is, in case 727 the shell command we just ran changed it. */ 728 chdir (current_directory); 729 #endif 730 #else /* Can fork. */ 731 int status, pid; 732 733 if ((pid = vfork ()) == 0) 734 { 735 const char *p, *user_shell; 736 737 if ((user_shell = (char *) getenv ("SHELL")) == NULL) 738 user_shell = "/bin/sh"; 739 740 /* Get the name of the shell for arg0. */ 741 p = lbasename (user_shell); 742 743 if (!arg) 744 execl (user_shell, p, (char *) 0); 745 else 746 execl (user_shell, p, "-c", arg, (char *) 0); 747 748 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell, 749 safe_strerror (errno)); 750 gdb_flush (gdb_stderr); 751 _exit (0177); 752 } 753 754 if (pid != -1) 755 waitpid (pid, &status, 0); 756 else 757 error (_("Fork failed")); 758 #endif /* Can fork. */ 759 } 760 761 static void 762 edit_command (char *arg, int from_tty) 763 { 764 struct symtabs_and_lines sals; 765 struct symtab_and_line sal; 766 struct symbol *sym; 767 char *arg1; 768 char *editor; 769 char *p, *fn; 770 771 /* Pull in the current default source line if necessary. */ 772 if (arg == 0) 773 { 774 set_default_source_symtab_and_line (); 775 sal = get_current_source_symtab_and_line (); 776 } 777 778 /* Bare "edit" edits file with present line. */ 779 780 if (arg == 0) 781 { 782 if (sal.symtab == 0) 783 error (_("No default source file yet.")); 784 sal.line += get_lines_to_list () / 2; 785 } 786 else 787 { 788 /* Now should only be one argument -- decode it in SAL. */ 789 790 arg1 = arg; 791 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0); 792 793 filter_sals (&sals); 794 if (! sals.nelts) 795 { 796 /* C++ */ 797 return; 798 } 799 if (sals.nelts > 1) 800 { 801 ambiguous_line_spec (&sals); 802 xfree (sals.sals); 803 return; 804 } 805 806 sal = sals.sals[0]; 807 xfree (sals.sals); 808 809 if (*arg1) 810 error (_("Junk at end of line specification.")); 811 812 /* If line was specified by address, first print exactly which 813 line, and which file. In this case, sal.symtab == 0 means 814 address is outside of all known source files, not that user 815 failed to give a filename. */ 816 if (*arg == '*') 817 { 818 struct gdbarch *gdbarch; 819 820 if (sal.symtab == 0) 821 /* FIXME-32x64--assumes sal.pc fits in long. */ 822 error (_("No source file for address %s."), 823 hex_string ((unsigned long) sal.pc)); 824 825 gdbarch = get_objfile_arch (sal.symtab->objfile); 826 sym = find_pc_function (sal.pc); 827 if (sym) 828 printf_filtered ("%s is in %s (%s:%d).\n", 829 paddress (gdbarch, sal.pc), 830 SYMBOL_PRINT_NAME (sym), 831 sal.symtab->filename, sal.line); 832 else 833 printf_filtered ("%s is at %s:%d.\n", 834 paddress (gdbarch, sal.pc), 835 sal.symtab->filename, sal.line); 836 } 837 838 /* If what was given does not imply a symtab, it must be an 839 undebuggable symbol which means no source code. */ 840 841 if (sal.symtab == 0) 842 error (_("No line number known for %s."), arg); 843 } 844 845 if ((editor = (char *) getenv ("EDITOR")) == NULL) 846 editor = "/bin/ex"; 847 848 /* If we don't already know the full absolute file name of the 849 source file, find it now. */ 850 if (!sal.symtab->fullname) 851 { 852 fn = symtab_to_fullname (sal.symtab); 853 if (!fn) 854 fn = "unknown"; 855 } 856 else 857 fn = sal.symtab->fullname; 858 859 /* Quote the file name, in case it has whitespace or other special 860 characters. */ 861 p = xstrprintf ("%s +%d \"%s\"", editor, sal.line, fn); 862 shell_escape (p, from_tty); 863 xfree (p); 864 } 865 866 static void 867 list_command (char *arg, int from_tty) 868 { 869 struct symtabs_and_lines sals, sals_end; 870 struct symtab_and_line sal = { 0 }; 871 struct symtab_and_line sal_end = { 0 }; 872 struct symtab_and_line cursal = { 0 }; 873 struct symbol *sym; 874 char *arg1; 875 int no_end = 1; 876 int dummy_end = 0; 877 int dummy_beg = 0; 878 int linenum_beg = 0; 879 char *p; 880 881 /* Pull in the current default source line if necessary. */ 882 if (arg == 0 || arg[0] == '+' || arg[0] == '-') 883 { 884 set_default_source_symtab_and_line (); 885 cursal = get_current_source_symtab_and_line (); 886 } 887 888 /* "l" or "l +" lists next ten lines. */ 889 890 if (arg == 0 || strcmp (arg, "+") == 0) 891 { 892 print_source_lines (cursal.symtab, cursal.line, 893 cursal.line + get_lines_to_list (), 0); 894 return; 895 } 896 897 /* "l -" lists previous ten lines, the ones before the ten just 898 listed. */ 899 if (strcmp (arg, "-") == 0) 900 { 901 print_source_lines (cursal.symtab, 902 max (get_first_line_listed () 903 - get_lines_to_list (), 1), 904 get_first_line_listed (), 0); 905 return; 906 } 907 908 /* Now if there is only one argument, decode it in SAL 909 and set NO_END. 910 If there are two arguments, decode them in SAL and SAL_END 911 and clear NO_END; however, if one of the arguments is blank, 912 set DUMMY_BEG or DUMMY_END to record that fact. */ 913 914 if (!have_full_symbols () && !have_partial_symbols ()) 915 error (_("No symbol table is loaded. Use the \"file\" command.")); 916 917 arg1 = arg; 918 if (*arg1 == ',') 919 dummy_beg = 1; 920 else 921 { 922 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0); 923 924 filter_sals (&sals); 925 if (!sals.nelts) 926 return; /* C++ */ 927 if (sals.nelts > 1) 928 { 929 ambiguous_line_spec (&sals); 930 xfree (sals.sals); 931 return; 932 } 933 934 sal = sals.sals[0]; 935 xfree (sals.sals); 936 } 937 938 /* Record whether the BEG arg is all digits. */ 939 940 for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); 941 linenum_beg = (p == arg1); 942 943 while (*arg1 == ' ' || *arg1 == '\t') 944 arg1++; 945 if (*arg1 == ',') 946 { 947 no_end = 0; 948 arg1++; 949 while (*arg1 == ' ' || *arg1 == '\t') 950 arg1++; 951 if (*arg1 == 0) 952 dummy_end = 1; 953 else 954 { 955 if (dummy_beg) 956 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0); 957 else 958 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 959 sal.symtab, sal.line); 960 filter_sals (&sals); 961 if (sals_end.nelts == 0) 962 return; 963 if (sals_end.nelts > 1) 964 { 965 ambiguous_line_spec (&sals_end); 966 xfree (sals_end.sals); 967 return; 968 } 969 sal_end = sals_end.sals[0]; 970 xfree (sals_end.sals); 971 } 972 } 973 974 if (*arg1) 975 error (_("Junk at end of line specification.")); 976 977 if (!no_end && !dummy_beg && !dummy_end 978 && sal.symtab != sal_end.symtab) 979 error (_("Specified start and end are in different files.")); 980 if (dummy_beg && dummy_end) 981 error (_("Two empty args do not say what lines to list.")); 982 983 /* If line was specified by address, 984 first print exactly which line, and which file. 985 986 In this case, sal.symtab == 0 means address is outside of all 987 known source files, not that user failed to give a filename. */ 988 if (*arg == '*') 989 { 990 struct gdbarch *gdbarch; 991 992 if (sal.symtab == 0) 993 /* FIXME-32x64--assumes sal.pc fits in long. */ 994 error (_("No source file for address %s."), 995 hex_string ((unsigned long) sal.pc)); 996 997 gdbarch = get_objfile_arch (sal.symtab->objfile); 998 sym = find_pc_function (sal.pc); 999 if (sym) 1000 printf_filtered ("%s is in %s (%s:%d).\n", 1001 paddress (gdbarch, sal.pc), 1002 SYMBOL_PRINT_NAME (sym), 1003 sal.symtab->filename, sal.line); 1004 else 1005 printf_filtered ("%s is at %s:%d.\n", 1006 paddress (gdbarch, sal.pc), 1007 sal.symtab->filename, sal.line); 1008 } 1009 1010 /* If line was not specified by just a line number, and it does not 1011 imply a symtab, it must be an undebuggable symbol which means no 1012 source code. */ 1013 1014 if (!linenum_beg && sal.symtab == 0) 1015 error (_("No line number known for %s."), arg); 1016 1017 /* If this command is repeated with RET, 1018 turn it into the no-arg variant. */ 1019 1020 if (from_tty) 1021 *arg = 0; 1022 1023 if (dummy_beg && sal_end.symtab == 0) 1024 error (_("No default source file yet. Do \"help list\".")); 1025 if (dummy_beg) 1026 print_source_lines (sal_end.symtab, 1027 max (sal_end.line - (get_lines_to_list () - 1), 1), 1028 sal_end.line + 1, 0); 1029 else if (sal.symtab == 0) 1030 error (_("No default source file yet. Do \"help list\".")); 1031 else if (no_end) 1032 { 1033 int first_line = sal.line - get_lines_to_list () / 2; 1034 1035 if (first_line < 1) first_line = 1; 1036 1037 print_source_lines (sal.symtab, 1038 first_line, 1039 first_line + get_lines_to_list (), 1040 0); 1041 } 1042 else 1043 print_source_lines (sal.symtab, sal.line, 1044 (dummy_end 1045 ? sal.line + get_lines_to_list () 1046 : sal_end.line + 1), 1047 0); 1048 } 1049 1050 /* Subroutine of disassemble_command to simplify it. 1051 Perform the disassembly. 1052 NAME is the name of the function if known, or NULL. 1053 [LOW,HIGH) are the range of addresses to disassemble. 1054 MIXED is non-zero to print source with the assembler. */ 1055 1056 static void 1057 print_disassembly (struct gdbarch *gdbarch, const char *name, 1058 CORE_ADDR low, CORE_ADDR high, int flags) 1059 { 1060 #if defined(TUI) 1061 if (!tui_is_window_visible (DISASSEM_WIN)) 1062 #endif 1063 { 1064 printf_filtered ("Dump of assembler code "); 1065 if (name != NULL) 1066 printf_filtered ("for function %s:\n", name); 1067 else 1068 printf_filtered ("from %s to %s:\n", 1069 paddress (gdbarch, low), paddress (gdbarch, high)); 1070 1071 /* Dump the specified range. */ 1072 gdb_disassembly (gdbarch, current_uiout, 0, flags, -1, low, high); 1073 1074 printf_filtered ("End of assembler dump.\n"); 1075 gdb_flush (gdb_stdout); 1076 } 1077 #if defined(TUI) 1078 else 1079 { 1080 tui_show_assembly (gdbarch, low); 1081 } 1082 #endif 1083 } 1084 1085 /* Subroutine of disassemble_command to simplify it. 1086 Print a disassembly of the current function according to FLAGS. */ 1087 1088 static void 1089 disassemble_current_function (int flags) 1090 { 1091 struct frame_info *frame; 1092 struct gdbarch *gdbarch; 1093 CORE_ADDR low, high, pc; 1094 char *name; 1095 1096 frame = get_selected_frame (_("No frame selected.")); 1097 gdbarch = get_frame_arch (frame); 1098 pc = get_frame_pc (frame); 1099 if (find_pc_partial_function (pc, &name, &low, &high) == 0) 1100 error (_("No function contains program counter for selected frame.")); 1101 #if defined(TUI) 1102 /* NOTE: cagney/2003-02-13 The `tui_active' was previously 1103 `tui_version'. */ 1104 if (tui_active) 1105 /* FIXME: cagney/2004-02-07: This should be an observer. */ 1106 low = tui_get_low_disassembly_address (gdbarch, low, pc); 1107 #endif 1108 low += gdbarch_deprecated_function_start_offset (gdbarch); 1109 1110 print_disassembly (gdbarch, name, low, high, flags); 1111 } 1112 1113 /* Dump a specified section of assembly code. 1114 1115 Usage: 1116 disassemble [/mr] 1117 - dump the assembly code for the function of the current pc 1118 disassemble [/mr] addr 1119 - dump the assembly code for the function at ADDR 1120 disassemble [/mr] low,high 1121 disassemble [/mr] low,+length 1122 - dump the assembly code in the range [LOW,HIGH), or [LOW,LOW+length) 1123 1124 A /m modifier will include source code with the assembly. 1125 A /r modifier will include raw instructions in hex with the assembly. */ 1126 1127 static void 1128 disassemble_command (char *arg, int from_tty) 1129 { 1130 struct gdbarch *gdbarch = get_current_arch (); 1131 CORE_ADDR low, high; 1132 char *name; 1133 CORE_ADDR pc; 1134 int flags; 1135 1136 name = NULL; 1137 flags = 0; 1138 1139 if (arg && *arg == '/') 1140 { 1141 ++arg; 1142 1143 if (*arg == '\0') 1144 error (_("Missing modifier.")); 1145 1146 while (*arg && ! isspace (*arg)) 1147 { 1148 switch (*arg++) 1149 { 1150 case 'm': 1151 flags |= DISASSEMBLY_SOURCE; 1152 break; 1153 case 'r': 1154 flags |= DISASSEMBLY_RAW_INSN; 1155 break; 1156 default: 1157 error (_("Invalid disassembly modifier.")); 1158 } 1159 } 1160 1161 while (isspace (*arg)) 1162 ++arg; 1163 } 1164 1165 if (! arg || ! *arg) 1166 { 1167 flags |= DISASSEMBLY_OMIT_FNAME; 1168 disassemble_current_function (flags); 1169 return; 1170 } 1171 1172 pc = value_as_address (parse_to_comma_and_eval (&arg)); 1173 if (arg[0] == ',') 1174 ++arg; 1175 if (arg[0] == '\0') 1176 { 1177 /* One argument. */ 1178 if (find_pc_partial_function (pc, &name, &low, &high) == 0) 1179 error (_("No function contains specified address.")); 1180 #if defined(TUI) 1181 /* NOTE: cagney/2003-02-13 The `tui_active' was previously 1182 `tui_version'. */ 1183 if (tui_active) 1184 /* FIXME: cagney/2004-02-07: This should be an observer. */ 1185 low = tui_get_low_disassembly_address (gdbarch, low, pc); 1186 #endif 1187 low += gdbarch_deprecated_function_start_offset (gdbarch); 1188 flags |= DISASSEMBLY_OMIT_FNAME; 1189 } 1190 else 1191 { 1192 /* Two arguments. */ 1193 int incl_flag = 0; 1194 low = pc; 1195 while (isspace (*arg)) 1196 arg++; 1197 if (arg[0] == '+') 1198 { 1199 ++arg; 1200 incl_flag = 1; 1201 } 1202 high = parse_and_eval_address (arg); 1203 if (incl_flag) 1204 high += low; 1205 } 1206 1207 print_disassembly (gdbarch, name, low, high, flags); 1208 } 1209 1210 static void 1211 make_command (char *arg, int from_tty) 1212 { 1213 char *p; 1214 1215 if (arg == 0) 1216 p = "make"; 1217 else 1218 { 1219 p = xmalloc (sizeof ("make ") + strlen (arg)); 1220 strcpy (p, "make "); 1221 strcpy (p + sizeof ("make ") - 1, arg); 1222 } 1223 1224 shell_escape (p, from_tty); 1225 } 1226 1227 static void 1228 show_user (char *args, int from_tty) 1229 { 1230 struct cmd_list_element *c; 1231 extern struct cmd_list_element *cmdlist; 1232 1233 if (args) 1234 { 1235 char *comname = args; 1236 1237 c = lookup_cmd (&comname, cmdlist, "", 0, 1); 1238 if (c->class != class_user) 1239 error (_("Not a user command.")); 1240 show_user_1 (c, "", args, gdb_stdout); 1241 } 1242 else 1243 { 1244 for (c = cmdlist; c; c = c->next) 1245 { 1246 if (c->class == class_user || c->prefixlist != NULL) 1247 show_user_1 (c, "", c->name, gdb_stdout); 1248 } 1249 } 1250 } 1251 1252 /* Search through names of commands and documentations for a certain 1253 regular expression. */ 1254 1255 void 1256 apropos_command (char *searchstr, int from_tty) 1257 { 1258 regex_t pattern; 1259 int code; 1260 1261 if (searchstr == NULL) 1262 error (_("REGEXP string is empty")); 1263 1264 code = regcomp (&pattern, searchstr, REG_ICASE); 1265 if (code == 0) 1266 { 1267 struct cleanup *cleanups; 1268 1269 cleanups = make_regfree_cleanup (&pattern); 1270 apropos_cmd (gdb_stdout, cmdlist, &pattern, ""); 1271 do_cleanups (cleanups); 1272 } 1273 else 1274 { 1275 char *err = get_regcomp_error (code, &pattern); 1276 1277 make_cleanup (xfree, err); 1278 error (_("Error in regular expression: %s"), err); 1279 } 1280 } 1281 1282 /* Subroutine of alias_command to simplify it. 1283 Return the first N elements of ARGV flattened back to a string 1284 with a space separating each element. 1285 ARGV may not be NULL. 1286 This does not take care of quoting elements in case they contain spaces 1287 on purpose. */ 1288 1289 static dyn_string_t 1290 argv_to_dyn_string (char **argv, int n) 1291 { 1292 int i; 1293 dyn_string_t result = dyn_string_new (10); 1294 1295 gdb_assert (argv != NULL); 1296 gdb_assert (n >= 0 && n <= countargv (argv)); 1297 1298 for (i = 0; i < n; ++i) 1299 { 1300 if (i > 0) 1301 dyn_string_append_char (result, ' '); 1302 dyn_string_append_cstr (result, argv[i]); 1303 } 1304 1305 return result; 1306 } 1307 1308 /* Subroutine of alias_command to simplify it. 1309 Return TRUE if COMMAND exists, unambiguously. Otherwise FALSE. */ 1310 1311 static int 1312 valid_command_p (char *command) 1313 { 1314 struct cmd_list_element *c; 1315 1316 c = lookup_cmd_1 (& command, cmdlist, NULL, 1); 1317 1318 if (c == NULL || c == (struct cmd_list_element *) -1) 1319 return FALSE; 1320 1321 /* This is the slightly tricky part. 1322 lookup_cmd_1 will return a pointer to the last part of COMMAND 1323 to match, leaving COMMAND pointing at the remainder. */ 1324 while (*command == ' ' || *command == '\t') 1325 ++command; 1326 return *command == '\0'; 1327 } 1328 1329 /* Make an alias of an existing command. */ 1330 1331 static void 1332 alias_command (char *args, int from_tty) 1333 { 1334 int i, alias_argc, command_argc; 1335 int abbrev_flag = 0; 1336 char *args2, *equals, *alias, *command; 1337 char **alias_argv, **command_argv; 1338 dyn_string_t alias_dyn_string, command_dyn_string; 1339 struct cmd_list_element *c; 1340 static const char usage[] = N_("Usage: alias [-a] [--] ALIAS = COMMAND"); 1341 1342 if (args == NULL || strchr (args, '=') == NULL) 1343 error (_(usage)); 1344 1345 args2 = xstrdup (args); 1346 make_cleanup (xfree, args2); 1347 equals = strchr (args2, '='); 1348 *equals = '\0'; 1349 alias_argv = gdb_buildargv (args2); 1350 make_cleanup_freeargv (alias_argv); 1351 command_argv = gdb_buildargv (equals + 1); 1352 make_cleanup_freeargv (command_argv); 1353 1354 for (i = 0; alias_argv[i] != NULL; ) 1355 { 1356 if (strcmp (alias_argv[i], "-a") == 0) 1357 { 1358 ++alias_argv; 1359 abbrev_flag = 1; 1360 } 1361 else if (strcmp (alias_argv[i], "--") == 0) 1362 { 1363 ++alias_argv; 1364 break; 1365 } 1366 else 1367 break; 1368 } 1369 1370 if (alias_argv[0] == NULL || command_argv[0] == NULL 1371 || *alias_argv[0] == '\0' || *command_argv[0] == '\0') 1372 error (_(usage)); 1373 1374 for (i = 0; alias_argv[i] != NULL; ++i) 1375 { 1376 if (! valid_user_defined_cmd_name_p (alias_argv[i])) 1377 { 1378 if (i == 0) 1379 error (_("Invalid command name: %s"), alias_argv[i]); 1380 else 1381 error (_("Invalid command element name: %s"), alias_argv[i]); 1382 } 1383 } 1384 1385 alias_argc = countargv (alias_argv); 1386 command_argc = countargv (command_argv); 1387 1388 /* COMMAND must exist. 1389 Reconstruct the command to remove any extraneous spaces, 1390 for better error messages. */ 1391 command_dyn_string = argv_to_dyn_string (command_argv, command_argc); 1392 make_cleanup_dyn_string_delete (command_dyn_string); 1393 command = dyn_string_buf (command_dyn_string); 1394 if (! valid_command_p (command)) 1395 error (_("Invalid command to alias to: %s"), command); 1396 1397 /* ALIAS must not exist. */ 1398 alias_dyn_string = argv_to_dyn_string (alias_argv, alias_argc); 1399 make_cleanup_dyn_string_delete (alias_dyn_string); 1400 alias = dyn_string_buf (alias_dyn_string); 1401 if (valid_command_p (alias)) 1402 error (_("Alias already exists: %s"), alias); 1403 1404 /* If ALIAS is one word, it is an alias for the entire COMMAND. 1405 Example: alias spe = set print elements 1406 1407 Otherwise ALIAS and COMMAND must have the same number of words, 1408 and every word except the last must match; and the last word of 1409 ALIAS is made an alias of the last word of COMMAND. 1410 Example: alias set print elms = set pr elem 1411 Note that unambiguous abbreviations are allowed. */ 1412 1413 if (alias_argc == 1) 1414 { 1415 /* add_cmd requires *we* allocate space for name, hence the xstrdup. */ 1416 add_com_alias (xstrdup (alias_argv[0]), command, class_alias, 1417 abbrev_flag); 1418 } 1419 else 1420 { 1421 int i; 1422 dyn_string_t alias_prefix_dyn_string, command_prefix_dyn_string; 1423 char *alias_prefix, *command_prefix; 1424 struct cmd_list_element *c_alias, *c_command; 1425 1426 if (alias_argc != command_argc) 1427 error (_("Mismatched command length between ALIAS and COMMAND.")); 1428 1429 /* Create copies of ALIAS and COMMAND without the last word, 1430 and use that to verify the leading elements match. */ 1431 alias_prefix_dyn_string = 1432 argv_to_dyn_string (alias_argv, alias_argc - 1); 1433 make_cleanup_dyn_string_delete (alias_prefix_dyn_string); 1434 command_prefix_dyn_string = 1435 argv_to_dyn_string (alias_argv, command_argc - 1); 1436 make_cleanup_dyn_string_delete (command_prefix_dyn_string); 1437 alias_prefix = dyn_string_buf (alias_prefix_dyn_string); 1438 command_prefix = dyn_string_buf (command_prefix_dyn_string); 1439 1440 c_command = lookup_cmd_1 (& command_prefix, cmdlist, NULL, 1); 1441 /* We've already tried to look up COMMAND. */ 1442 gdb_assert (c_command != NULL 1443 && c_command != (struct cmd_list_element *) -1); 1444 gdb_assert (c_command->prefixlist != NULL); 1445 c_alias = lookup_cmd_1 (& alias_prefix, cmdlist, NULL, 1); 1446 if (c_alias != c_command) 1447 error (_("ALIAS and COMMAND prefixes do not match.")); 1448 1449 /* add_cmd requires *we* allocate space for name, hence the xstrdup. */ 1450 add_alias_cmd (xstrdup (alias_argv[alias_argc - 1]), 1451 command_argv[command_argc - 1], 1452 class_alias, abbrev_flag, c_command->prefixlist); 1453 } 1454 } 1455 1456 /* Print a list of files and line numbers which a user may choose from 1457 in order to list a function which was specified ambiguously (as 1458 with `list classname::overloadedfuncname', for example). The 1459 vector in SALS provides the filenames and line numbers. */ 1460 1461 static void 1462 ambiguous_line_spec (struct symtabs_and_lines *sals) 1463 { 1464 int i; 1465 1466 for (i = 0; i < sals->nelts; ++i) 1467 printf_filtered (_("file: \"%s\", line number: %d\n"), 1468 sals->sals[i].symtab->filename, sals->sals[i].line); 1469 } 1470 1471 /* Sort function for filter_sals. */ 1472 1473 static int 1474 compare_symtabs (const void *a, const void *b) 1475 { 1476 const struct symtab_and_line *sala = a; 1477 const struct symtab_and_line *salb = b; 1478 int r; 1479 1480 if (!sala->symtab->dirname) 1481 { 1482 if (salb->symtab->dirname) 1483 return -1; 1484 } 1485 else if (!salb->symtab->dirname) 1486 { 1487 if (sala->symtab->dirname) 1488 return 1; 1489 } 1490 else 1491 { 1492 r = filename_cmp (sala->symtab->dirname, salb->symtab->dirname); 1493 if (r) 1494 return r; 1495 } 1496 1497 r = filename_cmp (sala->symtab->filename, salb->symtab->filename); 1498 if (r) 1499 return r; 1500 1501 if (sala->line < salb->line) 1502 return -1; 1503 return sala->line == salb->line ? 0 : 1; 1504 } 1505 1506 /* Remove any SALs that do not match the current program space, or 1507 which appear to be "file:line" duplicates. */ 1508 1509 static void 1510 filter_sals (struct symtabs_and_lines *sals) 1511 { 1512 int i, out, prev; 1513 1514 out = 0; 1515 for (i = 0; i < sals->nelts; ++i) 1516 { 1517 if (sals->sals[i].pspace == current_program_space 1518 && sals->sals[i].symtab != NULL) 1519 { 1520 sals->sals[out] = sals->sals[i]; 1521 ++out; 1522 } 1523 } 1524 sals->nelts = out; 1525 1526 qsort (sals->sals, sals->nelts, sizeof (struct symtab_and_line), 1527 compare_symtabs); 1528 1529 out = 1; 1530 prev = 0; 1531 for (i = 1; i < sals->nelts; ++i) 1532 { 1533 if (compare_symtabs (&sals->sals[prev], &sals->sals[i])) 1534 { 1535 /* Symtabs differ. */ 1536 sals->sals[out] = sals->sals[i]; 1537 prev = out; 1538 ++out; 1539 } 1540 } 1541 sals->nelts = out; 1542 1543 if (sals->nelts == 0) 1544 { 1545 xfree (sals->sals); 1546 sals->sals = NULL; 1547 } 1548 } 1549 1550 static void 1551 set_debug (char *arg, int from_tty) 1552 { 1553 printf_unfiltered (_("\"set debug\" must be followed by " 1554 "the name of a debug subcommand.\n")); 1555 help_list (setdebuglist, "set debug ", -1, gdb_stdout); 1556 } 1557 1558 static void 1559 show_debug (char *args, int from_tty) 1560 { 1561 cmd_show_list (showdebuglist, from_tty, ""); 1562 } 1563 1564 void 1565 init_cmd_lists (void) 1566 { 1567 max_user_call_depth = 1024; 1568 1569 cmdlist = NULL; 1570 infolist = NULL; 1571 enablelist = NULL; 1572 disablelist = NULL; 1573 togglelist = NULL; 1574 stoplist = NULL; 1575 deletelist = NULL; 1576 detachlist = NULL; 1577 enablebreaklist = NULL; 1578 setlist = NULL; 1579 unsetlist = NULL; 1580 showlist = NULL; 1581 sethistlist = NULL; 1582 showhistlist = NULL; 1583 unsethistlist = NULL; 1584 maintenancelist = NULL; 1585 maintenanceinfolist = NULL; 1586 maintenanceprintlist = NULL; 1587 setprintlist = NULL; 1588 showprintlist = NULL; 1589 setchecklist = NULL; 1590 showchecklist = NULL; 1591 skiplist = NULL; 1592 } 1593 1594 static void 1595 show_info_verbose (struct ui_file *file, int from_tty, 1596 struct cmd_list_element *c, 1597 const char *value) 1598 { 1599 if (info_verbose) 1600 fprintf_filtered (file, 1601 _("Verbose printing of informational messages is %s.\n"), 1602 value); 1603 else 1604 fprintf_filtered (file, _("Verbosity is %s.\n"), value); 1605 } 1606 1607 static void 1608 show_history_expansion_p (struct ui_file *file, int from_tty, 1609 struct cmd_list_element *c, const char *value) 1610 { 1611 fprintf_filtered (file, _("History expansion on command input is %s.\n"), 1612 value); 1613 } 1614 1615 static void 1616 show_baud_rate (struct ui_file *file, int from_tty, 1617 struct cmd_list_element *c, const char *value) 1618 { 1619 fprintf_filtered (file, _("Baud rate for remote serial I/O is %s.\n"), 1620 value); 1621 } 1622 1623 static void 1624 show_remote_debug (struct ui_file *file, int from_tty, 1625 struct cmd_list_element *c, const char *value) 1626 { 1627 fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"), 1628 value); 1629 } 1630 1631 static void 1632 show_remote_timeout (struct ui_file *file, int from_tty, 1633 struct cmd_list_element *c, const char *value) 1634 { 1635 fprintf_filtered (file, 1636 _("Timeout limit to wait for target to respond is %s.\n"), 1637 value); 1638 } 1639 1640 static void 1641 show_max_user_call_depth (struct ui_file *file, int from_tty, 1642 struct cmd_list_element *c, const char *value) 1643 { 1644 fprintf_filtered (file, 1645 _("The max call depth for user-defined commands is %s.\n"), 1646 value); 1647 } 1648 1649 1650 void 1651 init_cli_cmds (void) 1652 { 1653 struct cmd_list_element *c; 1654 char *source_help_text; 1655 1656 /* Define the classes of commands. 1657 They will appear in the help list in alphabetical order. */ 1658 1659 add_cmd ("internals", class_maintenance, NULL, _("\ 1660 Maintenance commands.\n\ 1661 Some gdb commands are provided just for use by gdb maintainers.\n\ 1662 These commands are subject to frequent change, and may not be as\n\ 1663 well documented as user commands."), 1664 &cmdlist); 1665 add_cmd ("obscure", class_obscure, NULL, _("Obscure features."), &cmdlist); 1666 add_cmd ("aliases", class_alias, NULL, 1667 _("Aliases of other commands."), &cmdlist); 1668 add_cmd ("user-defined", class_user, NULL, _("\ 1669 User-defined commands.\n\ 1670 The commands in this class are those defined by the user.\n\ 1671 Use the \"define\" command to define a command."), &cmdlist); 1672 add_cmd ("support", class_support, NULL, _("Support facilities."), &cmdlist); 1673 if (!dbx_commands) 1674 add_cmd ("status", class_info, NULL, _("Status inquiries."), &cmdlist); 1675 add_cmd ("files", class_files, NULL, _("Specifying and examining files."), 1676 &cmdlist); 1677 add_cmd ("breakpoints", class_breakpoint, NULL, 1678 _("Making program stop at certain points."), &cmdlist); 1679 add_cmd ("data", class_vars, NULL, _("Examining data."), &cmdlist); 1680 add_cmd ("stack", class_stack, NULL, _("\ 1681 Examining the stack.\n\ 1682 The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ 1683 counting from zero for the innermost (currently executing) frame.\n\n\ 1684 At any time gdb identifies one frame as the \"selected\" frame.\n\ 1685 Variable lookups are done with respect to the selected frame.\n\ 1686 When the program being debugged stops, gdb selects the innermost frame.\n\ 1687 The commands below can be used to select other frames by number or address."), 1688 &cmdlist); 1689 add_cmd ("running", class_run, NULL, _("Running the program."), &cmdlist); 1690 1691 /* Define general commands. */ 1692 1693 add_com ("pwd", class_files, pwd_command, _("\ 1694 Print working directory. This is used for your program as well.")); 1695 1696 c = add_cmd ("cd", class_files, cd_command, _("\ 1697 Set working directory to DIR for debugger and program being debugged.\n\ 1698 The change does not take effect for the program being debugged\n\ 1699 until the next time it is started."), &cmdlist); 1700 set_cmd_completer (c, filename_completer); 1701 1702 add_com ("echo", class_support, echo_command, _("\ 1703 Print a constant string. Give string as argument.\n\ 1704 C escape sequences may be used in the argument.\n\ 1705 No newline is added at the end of the argument;\n\ 1706 use \"\\n\" if you want a newline to be printed.\n\ 1707 Since leading and trailing whitespace are ignored in command arguments,\n\ 1708 if you want to print some you must use \"\\\" before leading whitespace\n\ 1709 to be printed or after trailing whitespace.")); 1710 add_com ("document", class_support, document_command, _("\ 1711 Document a user-defined command.\n\ 1712 Give command name as argument. Give documentation on following lines.\n\ 1713 End with a line of just \"end\".")); 1714 add_com ("define", class_support, define_command, _("\ 1715 Define a new command name. Command name is argument.\n\ 1716 Definition appears on following lines, one command per line.\n\ 1717 End with a line of just \"end\".\n\ 1718 Use the \"document\" command to give documentation for the new command.\n\ 1719 Commands defined in this way may have up to ten arguments.")); 1720 1721 source_help_text = xstrprintf (_("\ 1722 Read commands from a file named FILE.\n\ 1723 \n\ 1724 Usage: source [-s] [-v] FILE\n\ 1725 -s: search for the script in the source search path,\n\ 1726 even if FILE contains directories.\n\ 1727 -v: each command in FILE is echoed as it is executed.\n\ 1728 \n\ 1729 Note that the file \"%s\" is read automatically in this way\n\ 1730 when GDB is started."), gdbinit); 1731 c = add_cmd ("source", class_support, source_command, 1732 source_help_text, &cmdlist); 1733 set_cmd_completer (c, filename_completer); 1734 1735 add_setshow_enum_cmd ("script-extension", class_support, 1736 script_ext_enums, &script_ext_mode, _("\ 1737 Set mode for script filename extension recognition."), _("\ 1738 Show mode for script filename extension recognition."), _("\ 1739 off == no filename extension recognition (all sourced files are GDB scripts)\n\ 1740 soft == evaluate script according to filename extension, fallback to GDB script" 1741 "\n\ 1742 strict == evaluate script according to filename extension, error if not supported" 1743 ), 1744 NULL, 1745 show_script_ext_mode, 1746 &setlist, &showlist); 1747 1748 add_com ("quit", class_support, quit_command, _("Exit gdb.")); 1749 c = add_com ("help", class_support, help_command, 1750 _("Print list of commands.")); 1751 set_cmd_completer (c, command_completer); 1752 add_com_alias ("q", "quit", class_support, 1); 1753 add_com_alias ("h", "help", class_support, 1); 1754 1755 add_setshow_boolean_cmd ("verbose", class_support, &info_verbose, _("\ 1756 Set verbosity."), _("\ 1757 Show verbosity."), NULL, 1758 set_verbose, 1759 show_info_verbose, 1760 &setlist, &showlist); 1761 1762 add_prefix_cmd ("history", class_support, set_history, 1763 _("Generic command for setting command history parameters."), 1764 &sethistlist, "set history ", 0, &setlist); 1765 add_prefix_cmd ("history", class_support, show_history, 1766 _("Generic command for showing command history parameters."), 1767 &showhistlist, "show history ", 0, &showlist); 1768 1769 add_setshow_boolean_cmd ("expansion", no_class, &history_expansion_p, _("\ 1770 Set history expansion on command input."), _("\ 1771 Show history expansion on command input."), _("\ 1772 Without an argument, history expansion is enabled."), 1773 NULL, 1774 show_history_expansion_p, 1775 &sethistlist, &showhistlist); 1776 1777 add_prefix_cmd ("info", class_info, info_command, _("\ 1778 Generic command for showing things about the program being debugged."), 1779 &infolist, "info ", 0, &cmdlist); 1780 add_com_alias ("i", "info", class_info, 1); 1781 add_com_alias ("inf", "info", class_info, 1); 1782 1783 add_com ("complete", class_obscure, complete_command, 1784 _("List the completions for the rest of the line as a command.")); 1785 1786 add_prefix_cmd ("show", class_info, show_command, _("\ 1787 Generic command for showing things about the debugger."), 1788 &showlist, "show ", 0, &cmdlist); 1789 /* Another way to get at the same thing. */ 1790 add_info ("set", show_command, _("Show all GDB settings.")); 1791 1792 add_cmd ("commands", no_set_class, show_commands, _("\ 1793 Show the history of commands you typed.\n\ 1794 You can supply a command number to start with, or a `+' to start after\n\ 1795 the previous command number shown."), 1796 &showlist); 1797 1798 add_cmd ("version", no_set_class, show_version, 1799 _("Show what version of GDB this is."), &showlist); 1800 1801 add_com ("while", class_support, while_command, _("\ 1802 Execute nested commands WHILE the conditional expression is non zero.\n\ 1803 The conditional expression must follow the word `while' and must in turn be\n\ 1804 followed by a new line. The nested commands must be entered one per line,\n\ 1805 and should be terminated by the word `end'.")); 1806 1807 add_com ("if", class_support, if_command, _("\ 1808 Execute nested commands once IF the conditional expression is non zero.\n\ 1809 The conditional expression must follow the word `if' and must in turn be\n\ 1810 followed by a new line. The nested commands must be entered one per line,\n\ 1811 and should be terminated by the word 'else' or `end'. If an else clause\n\ 1812 is used, the same rules apply to its nested commands as to the first ones.")); 1813 1814 /* If target is open when baud changes, it doesn't take effect until 1815 the next open (I think, not sure). */ 1816 add_setshow_zinteger_cmd ("remotebaud", no_class, &baud_rate, _("\ 1817 Set baud rate for remote serial I/O."), _("\ 1818 Show baud rate for remote serial I/O."), _("\ 1819 This value is used to set the speed of the serial port when debugging\n\ 1820 using remote targets."), 1821 NULL, 1822 show_baud_rate, 1823 &setlist, &showlist); 1824 1825 add_setshow_zinteger_cmd ("remote", no_class, &remote_debug, _("\ 1826 Set debugging of remote protocol."), _("\ 1827 Show debugging of remote protocol."), _("\ 1828 When enabled, each packet sent or received with the remote target\n\ 1829 is displayed."), 1830 NULL, 1831 show_remote_debug, 1832 &setdebuglist, &showdebuglist); 1833 1834 add_setshow_integer_cmd ("remotetimeout", no_class, &remote_timeout, _("\ 1835 Set timeout limit to wait for target to respond."), _("\ 1836 Show timeout limit to wait for target to respond."), _("\ 1837 This value is used to set the time limit for gdb to wait for a response\n\ 1838 from the target."), 1839 NULL, 1840 show_remote_timeout, 1841 &setlist, &showlist); 1842 1843 add_prefix_cmd ("debug", no_class, set_debug, 1844 _("Generic command for setting gdb debugging flags"), 1845 &setdebuglist, "set debug ", 0, &setlist); 1846 1847 add_prefix_cmd ("debug", no_class, show_debug, 1848 _("Generic command for showing gdb debugging flags"), 1849 &showdebuglist, "show debug ", 0, &showlist); 1850 1851 c = add_com ("shell", class_support, shell_escape, _("\ 1852 Execute the rest of the line as a shell command.\n\ 1853 With no arguments, run an inferior shell.")); 1854 set_cmd_completer (c, filename_completer); 1855 1856 c = add_com ("edit", class_files, edit_command, _("\ 1857 Edit specified file or function.\n\ 1858 With no argument, edits file containing most recent line listed.\n\ 1859 Editing targets can be specified in these ways:\n\ 1860 FILE:LINENUM, to edit at that line in that file,\n\ 1861 FUNCTION, to edit at the beginning of that function,\n\ 1862 FILE:FUNCTION, to distinguish among like-named static functions.\n\ 1863 *ADDRESS, to edit at the line containing that address.\n\ 1864 Uses EDITOR environment variable contents as editor (or ex as default).")); 1865 1866 c->completer = location_completer; 1867 1868 add_com ("list", class_files, list_command, _("\ 1869 List specified function or line.\n\ 1870 With no argument, lists ten more lines after or around previous listing.\n\ 1871 \"list -\" lists the ten lines before a previous ten-line listing.\n\ 1872 One argument specifies a line, and ten lines are listed around that line.\n\ 1873 Two arguments with comma between specify starting and ending lines to list.\n\ 1874 Lines can be specified in these ways:\n\ 1875 LINENUM, to list around that line in current file,\n\ 1876 FILE:LINENUM, to list around that line in that file,\n\ 1877 FUNCTION, to list around beginning of that function,\n\ 1878 FILE:FUNCTION, to distinguish among like-named static functions.\n\ 1879 *ADDRESS, to list around the line containing that address.\n\ 1880 With two args if one is empty it stands for ten lines away from \ 1881 the other arg.")); 1882 1883 if (!xdb_commands) 1884 add_com_alias ("l", "list", class_files, 1); 1885 else 1886 add_com_alias ("v", "list", class_files, 1); 1887 1888 if (dbx_commands) 1889 add_com_alias ("file", "list", class_files, 1); 1890 1891 c = add_com ("disassemble", class_vars, disassemble_command, _("\ 1892 Disassemble a specified section of memory.\n\ 1893 Default is the function surrounding the pc of the selected frame.\n\ 1894 With a /m modifier, source lines are included (if available).\n\ 1895 With a /r modifier, raw instructions in hex are included.\n\ 1896 With a single argument, the function surrounding that address is dumped.\n\ 1897 Two arguments (separated by a comma) are taken as a range of memory to dump,\n\ 1898 in the form of \"start,end\", or \"start,+length\".")); 1899 set_cmd_completer (c, location_completer); 1900 if (xdb_commands) 1901 add_com_alias ("va", "disassemble", class_xdb, 0); 1902 1903 add_com_alias ("!", "shell", class_support, 0); 1904 1905 c = add_com ("make", class_support, make_command, _("\ 1906 Run the ``make'' program using the rest of the line as arguments.")); 1907 set_cmd_completer (c, filename_completer); 1908 add_cmd ("user", no_class, show_user, _("\ 1909 Show definitions of user defined commands.\n\ 1910 Argument is the name of the user defined command.\n\ 1911 With no argument, show definitions of all user defined commands."), &showlist); 1912 add_com ("apropos", class_support, apropos_command, 1913 _("Search for commands matching a REGEXP")); 1914 1915 add_setshow_integer_cmd ("max-user-call-depth", no_class, 1916 &max_user_call_depth, _("\ 1917 Set the max call depth for user-defined commands."), _("\ 1918 Show the max call depth for user-defined commands."), NULL, 1919 NULL, 1920 show_max_user_call_depth, 1921 &setlist, &showlist); 1922 1923 add_setshow_boolean_cmd ("trace-commands", no_class, &trace_commands, _("\ 1924 Set tracing of GDB CLI commands."), _("\ 1925 Show state of GDB CLI command tracing."), _("\ 1926 When 'on', each command is displayed as it is executed."), 1927 NULL, 1928 NULL, 1929 &setlist, &showlist); 1930 1931 c = add_com ("alias", class_support, alias_command, _("\ 1932 Define a new command that is an alias of an existing command.\n\ 1933 Usage: alias [-a] [--] ALIAS = COMMAND\n\ 1934 ALIAS is the name of the alias command to create.\n\ 1935 COMMAND is the command being aliased to.\n\ 1936 If \"-a\" is specified, the command is an abbreviation,\n\ 1937 and will not appear in help command list output.\n\ 1938 \n\ 1939 Examples:\n\ 1940 Make \"spe\" an alias of \"set print elements\":\n\ 1941 alias spe = set print elements\n\ 1942 Make \"elms\" an alias of \"elements\" in the \"set print\" command:\n\ 1943 alias -a set print elms = set print elements")); 1944 } 1945