3 Copyright (C) 2000-2005, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
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"
33 #include "expression.h"
37 #include "filenames.h" /* For DOSish file names. */
41 #include "tracepoint.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"
51 #include "python/python.h"
54 #include "tui/tui.h" /* For tui_active et.al. */
59 /* Prototypes for local command functions */
61 static void complete_command (char *, int);
63 static void echo_command (char *, int);
65 static void pwd_command (char *, int);
67 static void show_version (char *, int);
69 static void help_command (char *, int);
71 static void show_command (char *, int);
73 static void info_command (char *, int);
75 static void show_debug (char *, int);
77 static void set_debug (char *, int);
79 static void show_user (char *, int);
81 static void make_command (char *, int);
83 static void shell_escape (char *, int);
85 static void edit_command (char *, int);
87 static void list_command (char *, int);
89 void apropos_command (char *, int);
91 /* Prototypes for local utility functions */
93 static void ambiguous_line_spec (struct symtabs_and_lines *);
95 static void filter_sals (struct symtabs_and_lines *);
98 /* Limit the call depth of user-defined commands */
99 int max_user_call_depth;
101 /* Define all cmd_list_elements. */
103 /* Chain containing all defined commands. */
105 struct cmd_list_element *cmdlist;
107 /* Chain containing all defined info subcommands. */
109 struct cmd_list_element *infolist;
111 /* Chain containing all defined enable subcommands. */
113 struct cmd_list_element *enablelist;
115 /* Chain containing all defined disable subcommands. */
117 struct cmd_list_element *disablelist;
119 /* Chain containing all defined toggle subcommands. */
121 struct cmd_list_element *togglelist;
123 /* Chain containing all defined stop subcommands. */
125 struct cmd_list_element *stoplist;
127 /* Chain containing all defined delete subcommands. */
129 struct cmd_list_element *deletelist;
131 /* Chain containing all defined detach subcommands. */
133 struct cmd_list_element *detachlist;
135 /* Chain containing all defined kill subcommands. */
137 struct cmd_list_element *killlist;
139 /* Chain containing all defined "enable breakpoint" subcommands. */
141 struct cmd_list_element *enablebreaklist;
143 /* Chain containing all defined set subcommands */
145 struct cmd_list_element *setlist;
147 /* Chain containing all defined unset subcommands */
149 struct cmd_list_element *unsetlist;
151 /* Chain containing all defined show subcommands. */
153 struct cmd_list_element *showlist;
155 /* Chain containing all defined \"set history\". */
157 struct cmd_list_element *sethistlist;
159 /* Chain containing all defined \"show history\". */
161 struct cmd_list_element *showhistlist;
163 /* Chain containing all defined \"unset history\". */
165 struct cmd_list_element *unsethistlist;
167 /* Chain containing all defined maintenance subcommands. */
169 struct cmd_list_element *maintenancelist;
171 /* Chain containing all defined "maintenance info" subcommands. */
173 struct cmd_list_element *maintenanceinfolist;
175 /* Chain containing all defined "maintenance print" subcommands. */
177 struct cmd_list_element *maintenanceprintlist;
179 struct cmd_list_element *setprintlist;
181 struct cmd_list_element *showprintlist;
183 struct cmd_list_element *setdebuglist;
185 struct cmd_list_element *showdebuglist;
187 struct cmd_list_element *setchecklist;
189 struct cmd_list_element *showchecklist;
191 struct cmd_list_element *skiplist;
193 /* Command tracing state. */
195 int source_verbose = 0;
196 int trace_commands = 0;
198 /* 'script-extension' option support. */
200 static const char script_ext_off[] = "off";
201 static const char script_ext_soft[] = "soft";
202 static const char script_ext_strict[] = "strict";
204 static const char *script_ext_enums[] = {
211 static const char *script_ext_mode = script_ext_soft;
213 /* Utility used everywhere when at least one argument is needed and
217 error_no_arg (char *why)
219 error (_("Argument required (%s)."), why);
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
227 info_command (char *arg, int from_tty)
229 printf_unfiltered (_("\"info\" must be followed by "
230 "the name of an info command.\n"));
231 help_list (infolist, "info ", -1, gdb_stdout);
234 /* The "show" command with no arguments shows all the settings. */
237 show_command (char *arg, int from_tty)
239 cmd_show_list (showlist, from_tty, "");
242 /* Provide documentation on command or list given by COMMAND. FROM_TTY
246 help_command (char *command, int from_tty)
248 help_cmd (command, gdb_stdout);
251 /* The "complete" command is used by Emacs to implement completion. */
254 complete_command (char *arg, int from_tty)
257 char **completions, *point, *arg_prefix;
263 argpoint = strlen (arg);
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;
272 if (strchr (rl_completer_word_break_characters, point[-1]) != 0)
277 arg_prefix = alloca (point - arg + 1);
278 memcpy (arg_prefix, arg, point - arg);
279 arg_prefix[point - arg] = 0;
281 completions = complete_line (point, arg, argpoint);
287 for (size = 0; completions[size]; ++size)
289 qsort (completions, size, sizeof (char *), compare_strings);
291 /* We do extra processing here since we only want to print each
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]))
303 xfree (completions[next_item]);
307 xfree (completions[item]);
316 is_complete_command (struct cmd_list_element *c)
318 return cmd_cfunc_eq (c, complete_command);
322 show_version (char *args, int from_tty)
325 print_gdb_version (gdb_stdout);
326 printf_filtered ("\n");
330 /* Handle the quit command. */
333 quit_command (char *args, int from_tty)
335 if (!quit_confirm ())
336 error (_("Not confirmed."));
338 disconnect_tracing (from_tty);
340 quit_force (args, from_tty);
344 pwd_command (char *args, int from_tty)
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));
352 if (strcmp (gdb_dirbuf, current_directory) != 0)
353 printf_unfiltered (_("Working directory %s\n (canonically %s).\n"),
354 current_directory, gdb_dirbuf);
356 printf_unfiltered (_("Working directory %s.\n"), current_directory);
360 cd_command (char *dir, int from_tty)
363 /* Found something other than leading repetitions of "/..". */
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. */
372 error_no_arg (_("new working directory"));
374 dir = tilde_expand (dir);
375 make_cleanup (xfree, dir);
378 perror_with_name (dir);
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));
388 if (IS_DIR_SEPARATOR (dir[len - 1]))
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:/" */
400 dir = savestring (dir, len);
401 if (IS_ABSOLUTE_PATH (dir))
402 current_directory = dir;
405 if (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]))
406 current_directory = concat (current_directory, dir, (char *)NULL);
408 current_directory = concat (current_directory, SLASH_STRING,
413 /* Now simplify any occurrences of `.' and `..' in the pathname. */
416 for (p = current_directory; *p;)
418 if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.'
419 && (p[2] == 0 || IS_DIR_SEPARATOR (p[2])))
421 else if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' && p[2] == '.'
422 && (p[3] == 0 || IS_DIR_SEPARATOR (p[3])))
426 /* Search backwards for the directory just before the "/.."
427 and obliterate it and the "/..". */
430 while (q != current_directory && !IS_DIR_SEPARATOR (q[-1]))
433 if (q == current_directory)
434 /* current_directory is
435 a relative pathname ("can't happen"--leave it alone). */
439 strcpy (q - 1, p + 3);
444 /* We are dealing with leading repetitions of "/..", for
445 example "/../..", which is the Mach super-root. */
455 forget_cached_source_info ();
458 pwd_command ((char *) 0, 1);
461 /* Show the current value of the 'script-extension' option. */
464 show_script_ext_mode (struct ui_file *file, int from_tty,
465 struct cmd_list_element *c, const char *value)
467 fprintf_filtered (file,
468 _("Script filename extension recognition is \"%s\".\n"),
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
479 If SEARCH_PATH is non-zero, and the file isn't found in cwd,
480 search for it in the source search path.
482 NOTE: This calls openp which uses xfullpath to compute the full path
483 instead of gdb_realpath. Symbolic links are not resolved. */
486 find_and_open_script (const char *script_file, int search_path,
487 FILE **streamp, char **full_pathp)
491 struct cleanup *old_cleanups;
492 int search_flags = OPF_TRY_CWD_FIRST;
494 file = tilde_expand (script_file);
495 old_cleanups = make_cleanup (xfree, file);
498 search_flags |= OPF_SEARCH_IN_PATH;
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);
507 int save_errno = errno;
508 do_cleanups (old_cleanups);
513 do_cleanups (old_cleanups);
515 *streamp = fdopen (fd, FOPEN_RT);
519 /* Load script FILE, which has already been opened as STREAM.
520 STREAM is closed before we return. */
523 source_script_from_stream (FILE *stream, const char *file)
525 if (script_ext_mode != script_ext_off
526 && strlen (file) > 3 && !strcmp (&file[strlen (file) - 3], ".py"))
528 volatile struct gdb_exception e;
530 TRY_CATCH (e, RETURN_MASK_ERROR)
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);
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)
542 fseek (stream, 0, SEEK_SET);
543 script_from_file (stream, (char*) file);
547 /* Nope, just punt. */
556 script_from_file (stream, file);
559 /* Worker to perform the "source" command.
561 If SEARCH_PATH is non-zero, and the file isn't found in cwd,
562 search for it in the source search path. */
565 source_script_with_search (const char *file, int from_tty, int search_path)
569 struct cleanup *old_cleanups;
571 if (file == NULL || *file == 0)
572 error (_("source command requires file name of file to source."));
574 if (!find_and_open_script (file, search_path, &stream, &full_path))
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. */
581 perror_with_name (file);
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);
596 /* Wrapper around source_script_with_search to export it to main.c
597 for use in loading .gdbinit scripts. */
600 source_script (char *file, int from_tty)
602 source_script_with_search (file, from_tty, 0);
605 /* Return the source_verbose global variable to its previous state
606 on exit from the source command, by whatever means. */
608 source_verbose_cleanup (void *old_value)
610 source_verbose = *(int *)old_value;
615 source_command (char *args, int from_tty)
617 struct cleanup *old_cleanups;
619 int *old_source_verbose = xmalloc (sizeof(int));
622 *old_source_verbose = source_verbose;
623 old_cleanups = make_cleanup (source_verbose_cleanup,
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. */
634 while (args[0] != '\0')
636 /* Make sure leading white space does not break the
638 while (isspace(args[0]))
644 if (args[1] == 'v' && isspace (args[2]))
648 /* Skip passed -v. */
651 else if (args[1] == 's' && isspace (args[2]))
655 /* Skip passed -s. */
662 while (isspace (args[0]))
667 source_script_with_search (file, from_tty, search_path);
669 do_cleanups (old_cleanups);
674 echo_command (char *text, int from_tty)
680 while ((c = *p++) != '\0')
684 /* \ at end of argument is used after spaces
685 so they won't be lost. */
689 c = parse_escape (get_current_arch (), &p);
691 printf_filtered ("%c", c);
694 printf_filtered ("%c", c);
697 /* Force this output to appear now. */
699 gdb_flush (gdb_stdout);
703 shell_escape (char *arg, int from_tty)
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 : "");
712 arg = "inferior shell";
716 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg,
717 safe_strerror (errno));
718 gdb_flush (gdb_stderr);
722 fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc);
723 gdb_flush (gdb_stderr);
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);
730 #else /* Can fork. */
733 if ((pid = vfork ()) == 0)
735 const char *p, *user_shell;
737 if ((user_shell = (char *) getenv ("SHELL")) == NULL)
738 user_shell = "/bin/sh";
740 /* Get the name of the shell for arg0. */
741 p = lbasename (user_shell);
744 execl (user_shell, p, (char *) 0);
746 execl (user_shell, p, "-c", arg, (char *) 0);
748 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell,
749 safe_strerror (errno));
750 gdb_flush (gdb_stderr);
755 waitpid (pid, &status, 0);
757 error (_("Fork failed"));
758 #endif /* Can fork. */
762 edit_command (char *arg, int from_tty)
764 struct symtabs_and_lines sals;
765 struct symtab_and_line sal;
771 /* Pull in the current default source line if necessary. */
774 set_default_source_symtab_and_line ();
775 sal = get_current_source_symtab_and_line ();
778 /* Bare "edit" edits file with present line. */
783 error (_("No default source file yet."));
784 sal.line += get_lines_to_list () / 2;
788 /* Now should only be one argument -- decode it in SAL. */
791 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
801 ambiguous_line_spec (&sals);
810 error (_("Junk at end of line specification."));
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. */
818 struct gdbarch *gdbarch;
821 /* FIXME-32x64--assumes sal.pc fits in long. */
822 error (_("No source file for address %s."),
823 hex_string ((unsigned long) sal.pc));
825 gdbarch = get_objfile_arch (sal.symtab->objfile);
826 sym = find_pc_function (sal.pc);
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);
833 printf_filtered ("%s is at %s:%d.\n",
834 paddress (gdbarch, sal.pc),
835 sal.symtab->filename, sal.line);
838 /* If what was given does not imply a symtab, it must be an
839 undebuggable symbol which means no source code. */
842 error (_("No line number known for %s."), arg);
845 if ((editor = (char *) getenv ("EDITOR")) == NULL)
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)
852 fn = symtab_to_fullname (sal.symtab);
857 fn = sal.symtab->fullname;
859 /* Quote the file name, in case it has whitespace or other special
861 p = xstrprintf ("%s +%d \"%s\"", editor, sal.line, fn);
862 shell_escape (p, from_tty);
867 list_command (char *arg, int from_tty)
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 };
881 /* Pull in the current default source line if necessary. */
882 if (arg == 0 || arg[0] == '+' || arg[0] == '-')
884 set_default_source_symtab_and_line ();
885 cursal = get_current_source_symtab_and_line ();
888 /* "l" or "l +" lists next ten lines. */
890 if (arg == 0 || strcmp (arg, "+") == 0)
892 print_source_lines (cursal.symtab, cursal.line,
893 cursal.line + get_lines_to_list (), 0);
897 /* "l -" lists previous ten lines, the ones before the ten just
899 if (strcmp (arg, "-") == 0)
901 print_source_lines (cursal.symtab,
902 max (get_first_line_listed ()
903 - get_lines_to_list (), 1),
904 get_first_line_listed (), 0);
908 /* Now if there is only one argument, decode it in SAL
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. */
914 if (!have_full_symbols () && !have_partial_symbols ())
915 error (_("No symbol table is loaded. Use the \"file\" command."));
922 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
929 ambiguous_line_spec (&sals);
938 /* Record whether the BEG arg is all digits. */
940 for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
941 linenum_beg = (p == arg1);
943 while (*arg1 == ' ' || *arg1 == '\t')
949 while (*arg1 == ' ' || *arg1 == '\t')
956 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
958 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE,
959 sal.symtab, sal.line);
961 if (sals_end.nelts == 0)
963 if (sals_end.nelts > 1)
965 ambiguous_line_spec (&sals_end);
966 xfree (sals_end.sals);
969 sal_end = sals_end.sals[0];
970 xfree (sals_end.sals);
975 error (_("Junk at end of line specification."));
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."));
983 /* If line was specified by address,
984 first print exactly which line, and which file.
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. */
990 struct gdbarch *gdbarch;
993 /* FIXME-32x64--assumes sal.pc fits in long. */
994 error (_("No source file for address %s."),
995 hex_string ((unsigned long) sal.pc));
997 gdbarch = get_objfile_arch (sal.symtab->objfile);
998 sym = find_pc_function (sal.pc);
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);
1005 printf_filtered ("%s is at %s:%d.\n",
1006 paddress (gdbarch, sal.pc),
1007 sal.symtab->filename, sal.line);
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
1014 if (!linenum_beg && sal.symtab == 0)
1015 error (_("No line number known for %s."), arg);
1017 /* If this command is repeated with RET,
1018 turn it into the no-arg variant. */
1023 if (dummy_beg && sal_end.symtab == 0)
1024 error (_("No default source file yet. Do \"help list\"."));
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\"."));
1033 int first_line = sal.line - get_lines_to_list () / 2;
1035 if (first_line < 1) first_line = 1;
1037 print_source_lines (sal.symtab,
1039 first_line + get_lines_to_list (),
1043 print_source_lines (sal.symtab, sal.line,
1045 ? sal.line + get_lines_to_list ()
1046 : sal_end.line + 1),
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. */
1057 print_disassembly (struct gdbarch *gdbarch, const char *name,
1058 CORE_ADDR low, CORE_ADDR high, int flags)
1061 if (!tui_is_window_visible (DISASSEM_WIN))
1064 printf_filtered ("Dump of assembler code ");
1066 printf_filtered ("for function %s:\n", name);
1068 printf_filtered ("from %s to %s:\n",
1069 paddress (gdbarch, low), paddress (gdbarch, high));
1071 /* Dump the specified range. */
1072 gdb_disassembly (gdbarch, current_uiout, 0, flags, -1, low, high);
1074 printf_filtered ("End of assembler dump.\n");
1075 gdb_flush (gdb_stdout);
1080 tui_show_assembly (gdbarch, low);
1085 /* Subroutine of disassemble_command to simplify it.
1086 Print a disassembly of the current function according to FLAGS. */
1089 disassemble_current_function (int flags)
1091 struct frame_info *frame;
1092 struct gdbarch *gdbarch;
1093 CORE_ADDR low, high, pc;
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."));
1102 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1105 /* FIXME: cagney/2004-02-07: This should be an observer. */
1106 low = tui_get_low_disassembly_address (gdbarch, low, pc);
1108 low += gdbarch_deprecated_function_start_offset (gdbarch);
1110 print_disassembly (gdbarch, name, low, high, flags);
1113 /* Dump a specified section of assembly code.
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)
1124 A /m modifier will include source code with the assembly.
1125 A /r modifier will include raw instructions in hex with the assembly. */
1128 disassemble_command (char *arg, int from_tty)
1130 struct gdbarch *gdbarch = get_current_arch ();
1131 CORE_ADDR low, high;
1139 if (arg && *arg == '/')
1144 error (_("Missing modifier."));
1146 while (*arg && ! isspace (*arg))
1151 flags |= DISASSEMBLY_SOURCE;
1154 flags |= DISASSEMBLY_RAW_INSN;
1157 error (_("Invalid disassembly modifier."));
1161 while (isspace (*arg))
1165 if (! arg || ! *arg)
1167 flags |= DISASSEMBLY_OMIT_FNAME;
1168 disassemble_current_function (flags);
1172 pc = value_as_address (parse_to_comma_and_eval (&arg));
1178 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
1179 error (_("No function contains specified address."));
1181 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1184 /* FIXME: cagney/2004-02-07: This should be an observer. */
1185 low = tui_get_low_disassembly_address (gdbarch, low, pc);
1187 low += gdbarch_deprecated_function_start_offset (gdbarch);
1188 flags |= DISASSEMBLY_OMIT_FNAME;
1192 /* Two arguments. */
1195 while (isspace (*arg))
1202 high = parse_and_eval_address (arg);
1207 print_disassembly (gdbarch, name, low, high, flags);
1211 make_command (char *arg, int from_tty)
1219 p = xmalloc (sizeof ("make ") + strlen (arg));
1220 strcpy (p, "make ");
1221 strcpy (p + sizeof ("make ") - 1, arg);
1224 shell_escape (p, from_tty);
1228 show_user (char *args, int from_tty)
1230 struct cmd_list_element *c;
1231 extern struct cmd_list_element *cmdlist;
1235 char *comname = args;
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);
1244 for (c = cmdlist; c; c = c->next)
1246 if (c->class == class_user || c->prefixlist != NULL)
1247 show_user_1 (c, "", c->name, gdb_stdout);
1252 /* Search through names of commands and documentations for a certain
1253 regular expression. */
1256 apropos_command (char *searchstr, int from_tty)
1261 if (searchstr == NULL)
1262 error (_("REGEXP string is empty"));
1264 code = regcomp (&pattern, searchstr, REG_ICASE);
1267 struct cleanup *cleanups;
1269 cleanups = make_regfree_cleanup (&pattern);
1270 apropos_cmd (gdb_stdout, cmdlist, &pattern, "");
1271 do_cleanups (cleanups);
1275 char *err = get_regcomp_error (code, &pattern);
1277 make_cleanup (xfree, err);
1278 error (_("Error in regular expression: %s"), err);
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
1290 argv_to_dyn_string (char **argv, int n)
1293 dyn_string_t result = dyn_string_new (10);
1295 gdb_assert (argv != NULL);
1296 gdb_assert (n >= 0 && n <= countargv (argv));
1298 for (i = 0; i < n; ++i)
1301 dyn_string_append_char (result, ' ');
1302 dyn_string_append_cstr (result, argv[i]);
1308 /* Subroutine of alias_command to simplify it.
1309 Return TRUE if COMMAND exists, unambiguously. Otherwise FALSE. */
1312 valid_command_p (char *command)
1314 struct cmd_list_element *c;
1316 c = lookup_cmd_1 (& command, cmdlist, NULL, 1);
1318 if (c == NULL || c == (struct cmd_list_element *) -1)
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')
1326 return *command == '\0';
1329 /* Make an alias of an existing command. */
1332 alias_command (char *args, int from_tty)
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");
1342 if (args == NULL || strchr (args, '=') == NULL)
1345 args2 = xstrdup (args);
1346 make_cleanup (xfree, args2);
1347 equals = strchr (args2, '=');
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);
1354 for (i = 0; alias_argv[i] != NULL; )
1356 if (strcmp (alias_argv[i], "-a") == 0)
1361 else if (strcmp (alias_argv[i], "--") == 0)
1370 if (alias_argv[0] == NULL || command_argv[0] == NULL
1371 || *alias_argv[0] == '\0' || *command_argv[0] == '\0')
1374 for (i = 0; alias_argv[i] != NULL; ++i)
1376 if (! valid_user_defined_cmd_name_p (alias_argv[i]))
1379 error (_("Invalid command name: %s"), alias_argv[i]);
1381 error (_("Invalid command element name: %s"), alias_argv[i]);
1385 alias_argc = countargv (alias_argv);
1386 command_argc = countargv (command_argv);
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);
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);
1404 /* If ALIAS is one word, it is an alias for the entire COMMAND.
1405 Example: alias spe = set print elements
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. */
1413 if (alias_argc == 1)
1415 /* add_cmd requires *we* allocate space for name, hence the xstrdup. */
1416 add_com_alias (xstrdup (alias_argv[0]), command, class_alias,
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;
1426 if (alias_argc != command_argc)
1427 error (_("Mismatched command length between ALIAS and COMMAND."));
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);
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."));
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);
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. */
1462 ambiguous_line_spec (struct symtabs_and_lines *sals)
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);
1471 /* Sort function for filter_sals. */
1474 compare_symtabs (const void *a, const void *b)
1476 const struct symtab_and_line *sala = a;
1477 const struct symtab_and_line *salb = b;
1480 if (!sala->symtab->dirname)
1482 if (salb->symtab->dirname)
1485 else if (!salb->symtab->dirname)
1487 if (sala->symtab->dirname)
1492 r = filename_cmp (sala->symtab->dirname, salb->symtab->dirname);
1497 r = filename_cmp (sala->symtab->filename, salb->symtab->filename);
1501 if (sala->line < salb->line)
1503 return sala->line == salb->line ? 0 : 1;
1506 /* Remove any SALs that do not match the current program space, or
1507 which appear to be "file:line" duplicates. */
1510 filter_sals (struct symtabs_and_lines *sals)
1515 for (i = 0; i < sals->nelts; ++i)
1517 if (sals->sals[i].pspace == current_program_space
1518 && sals->sals[i].symtab != NULL)
1520 sals->sals[out] = sals->sals[i];
1526 qsort (sals->sals, sals->nelts, sizeof (struct symtab_and_line),
1531 for (i = 1; i < sals->nelts; ++i)
1533 if (compare_symtabs (&sals->sals[prev], &sals->sals[i]))
1535 /* Symtabs differ. */
1536 sals->sals[out] = sals->sals[i];
1543 if (sals->nelts == 0)
1551 set_debug (char *arg, int from_tty)
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);
1559 show_debug (char *args, int from_tty)
1561 cmd_show_list (showdebuglist, from_tty, "");
1565 init_cmd_lists (void)
1567 max_user_call_depth = 1024;
1577 enablebreaklist = 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;
1595 show_info_verbose (struct ui_file *file, int from_tty,
1596 struct cmd_list_element *c,
1600 fprintf_filtered (file,
1601 _("Verbose printing of informational messages is %s.\n"),
1604 fprintf_filtered (file, _("Verbosity is %s.\n"), value);
1608 show_history_expansion_p (struct ui_file *file, int from_tty,
1609 struct cmd_list_element *c, const char *value)
1611 fprintf_filtered (file, _("History expansion on command input is %s.\n"),
1616 show_baud_rate (struct ui_file *file, int from_tty,
1617 struct cmd_list_element *c, const char *value)
1619 fprintf_filtered (file, _("Baud rate for remote serial I/O is %s.\n"),
1624 show_remote_debug (struct ui_file *file, int from_tty,
1625 struct cmd_list_element *c, const char *value)
1627 fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"),
1632 show_remote_timeout (struct ui_file *file, int from_tty,
1633 struct cmd_list_element *c, const char *value)
1635 fprintf_filtered (file,
1636 _("Timeout limit to wait for target to respond is %s.\n"),
1641 show_max_user_call_depth (struct ui_file *file, int from_tty,
1642 struct cmd_list_element *c, const char *value)
1644 fprintf_filtered (file,
1645 _("The max call depth for user-defined commands is %s.\n"),
1651 init_cli_cmds (void)
1653 struct cmd_list_element *c;
1654 char *source_help_text;
1656 /* Define the classes of commands.
1657 They will appear in the help list in alphabetical order. */
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."),
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);
1674 add_cmd ("status", class_info, NULL, _("Status inquiries."), &cmdlist);
1675 add_cmd ("files", class_files, NULL, _("Specifying and examining files."),
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."),
1689 add_cmd ("running", class_run, NULL, _("Running the program."), &cmdlist);
1691 /* Define general commands. */
1693 add_com ("pwd", class_files, pwd_command, _("\
1694 Print working directory. This is used for your program as well."));
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);
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."));
1721 source_help_text = xstrprintf (_("\
1722 Read commands from a file named FILE.\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\
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);
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"
1742 strict == evaluate script according to filename extension, error if not supported"
1745 show_script_ext_mode,
1746 &setlist, &showlist);
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);
1755 add_setshow_boolean_cmd ("verbose", class_support, &info_verbose, _("\
1756 Set verbosity."), _("\
1757 Show verbosity."), NULL,
1760 &setlist, &showlist);
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);
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."),
1774 show_history_expansion_p,
1775 &sethistlist, &showhistlist);
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);
1783 add_com ("complete", class_obscure, complete_command,
1784 _("List the completions for the rest of the line as a command."));
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."));
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."),
1798 add_cmd ("version", no_set_class, show_version,
1799 _("Show what version of GDB this is."), &showlist);
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'."));
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."));
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."),
1823 &setlist, &showlist);
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\
1832 &setdebuglist, &showdebuglist);
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\
1840 show_remote_timeout,
1841 &setlist, &showlist);
1843 add_prefix_cmd ("debug", no_class, set_debug,
1844 _("Generic command for setting gdb debugging flags"),
1845 &setdebuglist, "set debug ", 0, &setlist);
1847 add_prefix_cmd ("debug", no_class, show_debug,
1848 _("Generic command for showing gdb debugging flags"),
1849 &showdebuglist, "show debug ", 0, &showlist);
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);
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)."));
1866 c->completer = location_completer;
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 \
1884 add_com_alias ("l", "list", class_files, 1);
1886 add_com_alias ("v", "list", class_files, 1);
1889 add_com_alias ("file", "list", class_files, 1);
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);
1901 add_com_alias ("va", "disassemble", class_xdb, 0);
1903 add_com_alias ("!", "shell", class_support, 0);
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"));
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,
1920 show_max_user_call_depth,
1921 &setlist, &showlist);
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."),
1929 &setlist, &showlist);
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\
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"));