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);
516 if (*streamp == NULL)
518 int save_errno = errno;
530 /* Load script FILE, which has already been opened as STREAM. */
533 source_script_from_stream (FILE *stream, const char *file)
535 if (script_ext_mode != script_ext_off
536 && strlen (file) > 3 && !strcmp (&file[strlen (file) - 3], ".py"))
538 volatile struct gdb_exception e;
540 TRY_CATCH (e, RETURN_MASK_ERROR)
542 source_python_script (stream, file);
546 /* Should we fallback to ye olde GDB script mode? */
547 if (script_ext_mode == script_ext_soft
548 && e.reason == RETURN_ERROR && e.error == UNSUPPORTED_ERROR)
550 fseek (stream, 0, SEEK_SET);
551 script_from_file (stream, (char*) file);
555 /* Nope, just punt. */
561 script_from_file (stream, file);
564 /* Worker to perform the "source" command.
566 If SEARCH_PATH is non-zero, and the file isn't found in cwd,
567 search for it in the source search path. */
570 source_script_with_search (const char *file, int from_tty, int search_path)
574 struct cleanup *old_cleanups;
576 if (file == NULL || *file == 0)
577 error (_("source command requires file name of file to source."));
579 if (!find_and_open_script (file, search_path, &stream, &full_path))
581 /* The script wasn't found, or was otherwise inaccessible.
582 If the source command was invoked interactively, throw an
583 error. Otherwise (e.g. if it was invoked by a script),
584 silently ignore the error. */
586 perror_with_name (file);
591 old_cleanups = make_cleanup (xfree, full_path);
592 make_cleanup_fclose (stream);
593 /* The python support reopens the file, so we need to pass full_path here
594 in case the file was found on the search path. It's useful to do this
595 anyway so that error messages show the actual file used. But only do
596 this if we (may have) used search_path, as printing the full path in
597 errors for the non-search case can be more noise than signal. */
598 source_script_from_stream (stream, search_path ? full_path : file);
599 do_cleanups (old_cleanups);
602 /* Wrapper around source_script_with_search to export it to main.c
603 for use in loading .gdbinit scripts. */
606 source_script (char *file, int from_tty)
608 source_script_with_search (file, from_tty, 0);
611 /* Return the source_verbose global variable to its previous state
612 on exit from the source command, by whatever means. */
614 source_verbose_cleanup (void *old_value)
616 source_verbose = *(int *)old_value;
621 source_command (char *args, int from_tty)
623 struct cleanup *old_cleanups;
625 int *old_source_verbose = xmalloc (sizeof(int));
628 *old_source_verbose = source_verbose;
629 old_cleanups = make_cleanup (source_verbose_cleanup,
632 /* -v causes the source command to run in verbose mode.
633 -s causes the file to be searched in the source search path,
634 even if the file name contains a '/'.
635 We still have to be able to handle filenames with spaces in a
636 backward compatible way, so buildargv is not appropriate. */
640 while (args[0] != '\0')
642 /* Make sure leading white space does not break the
644 while (isspace(args[0]))
650 if (args[1] == 'v' && isspace (args[2]))
654 /* Skip passed -v. */
657 else if (args[1] == 's' && isspace (args[2]))
661 /* Skip passed -s. */
668 while (isspace (args[0]))
673 source_script_with_search (file, from_tty, search_path);
675 do_cleanups (old_cleanups);
680 echo_command (char *text, int from_tty)
686 while ((c = *p++) != '\0')
690 /* \ at end of argument is used after spaces
691 so they won't be lost. */
695 c = parse_escape (get_current_arch (), &p);
697 printf_filtered ("%c", c);
700 printf_filtered ("%c", c);
703 /* Force this output to appear now. */
705 gdb_flush (gdb_stdout);
709 shell_escape (char *arg, int from_tty)
711 #if defined(CANT_FORK) || \
712 (!defined(HAVE_WORKING_VFORK) && !defined(HAVE_WORKING_FORK))
713 /* If ARG is NULL, they want an inferior shell, but `system' just
714 reports if the shell is available when passed a NULL arg. */
715 int rc = system (arg ? arg : "");
718 arg = "inferior shell";
722 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg,
723 safe_strerror (errno));
724 gdb_flush (gdb_stderr);
728 fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc);
729 gdb_flush (gdb_stderr);
732 /* Make sure to return to the directory GDB thinks it is, in case
733 the shell command we just ran changed it. */
734 chdir (current_directory);
736 #else /* Can fork. */
739 if ((pid = vfork ()) == 0)
741 const char *p, *user_shell;
743 if ((user_shell = (char *) getenv ("SHELL")) == NULL)
744 user_shell = "/bin/sh";
746 /* Get the name of the shell for arg0. */
747 p = lbasename (user_shell);
750 execl (user_shell, p, (char *) 0);
752 execl (user_shell, p, "-c", arg, (char *) 0);
754 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell,
755 safe_strerror (errno));
756 gdb_flush (gdb_stderr);
761 waitpid (pid, &status, 0);
763 error (_("Fork failed"));
764 #endif /* Can fork. */
768 edit_command (char *arg, int from_tty)
770 struct symtabs_and_lines sals;
771 struct symtab_and_line sal;
777 /* Pull in the current default source line if necessary. */
780 set_default_source_symtab_and_line ();
781 sal = get_current_source_symtab_and_line ();
784 /* Bare "edit" edits file with present line. */
789 error (_("No default source file yet."));
790 sal.line += get_lines_to_list () / 2;
794 /* Now should only be one argument -- decode it in SAL. */
797 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
807 ambiguous_line_spec (&sals);
816 error (_("Junk at end of line specification."));
818 /* If line was specified by address, first print exactly which
819 line, and which file. In this case, sal.symtab == 0 means
820 address is outside of all known source files, not that user
821 failed to give a filename. */
824 struct gdbarch *gdbarch;
827 /* FIXME-32x64--assumes sal.pc fits in long. */
828 error (_("No source file for address %s."),
829 hex_string ((unsigned long) sal.pc));
831 gdbarch = get_objfile_arch (sal.symtab->objfile);
832 sym = find_pc_function (sal.pc);
834 printf_filtered ("%s is in %s (%s:%d).\n",
835 paddress (gdbarch, sal.pc),
836 SYMBOL_PRINT_NAME (sym),
837 sal.symtab->filename, sal.line);
839 printf_filtered ("%s is at %s:%d.\n",
840 paddress (gdbarch, sal.pc),
841 sal.symtab->filename, sal.line);
844 /* If what was given does not imply a symtab, it must be an
845 undebuggable symbol which means no source code. */
848 error (_("No line number known for %s."), arg);
851 if ((editor = (char *) getenv ("EDITOR")) == NULL)
854 /* If we don't already know the full absolute file name of the
855 source file, find it now. */
856 if (!sal.symtab->fullname)
858 fn = symtab_to_fullname (sal.symtab);
863 fn = sal.symtab->fullname;
865 /* Quote the file name, in case it has whitespace or other special
867 p = xstrprintf ("%s +%d \"%s\"", editor, sal.line, fn);
868 shell_escape (p, from_tty);
873 list_command (char *arg, int from_tty)
875 struct symtabs_and_lines sals, sals_end;
876 struct symtab_and_line sal = { 0 };
877 struct symtab_and_line sal_end = { 0 };
878 struct symtab_and_line cursal = { 0 };
887 /* Pull in the current default source line if necessary. */
888 if (arg == 0 || arg[0] == '+' || arg[0] == '-')
890 set_default_source_symtab_and_line ();
891 cursal = get_current_source_symtab_and_line ();
894 /* "l" or "l +" lists next ten lines. */
896 if (arg == 0 || strcmp (arg, "+") == 0)
898 print_source_lines (cursal.symtab, cursal.line,
899 cursal.line + get_lines_to_list (), 0);
903 /* "l -" lists previous ten lines, the ones before the ten just
905 if (strcmp (arg, "-") == 0)
907 print_source_lines (cursal.symtab,
908 max (get_first_line_listed ()
909 - get_lines_to_list (), 1),
910 get_first_line_listed (), 0);
914 /* Now if there is only one argument, decode it in SAL
916 If there are two arguments, decode them in SAL and SAL_END
917 and clear NO_END; however, if one of the arguments is blank,
918 set DUMMY_BEG or DUMMY_END to record that fact. */
920 if (!have_full_symbols () && !have_partial_symbols ())
921 error (_("No symbol table is loaded. Use the \"file\" command."));
928 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
935 ambiguous_line_spec (&sals);
944 /* Record whether the BEG arg is all digits. */
946 for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
947 linenum_beg = (p == arg1);
949 while (*arg1 == ' ' || *arg1 == '\t')
955 while (*arg1 == ' ' || *arg1 == '\t')
962 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
964 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE,
965 sal.symtab, sal.line);
967 if (sals_end.nelts == 0)
969 if (sals_end.nelts > 1)
971 ambiguous_line_spec (&sals_end);
972 xfree (sals_end.sals);
975 sal_end = sals_end.sals[0];
976 xfree (sals_end.sals);
981 error (_("Junk at end of line specification."));
983 if (!no_end && !dummy_beg && !dummy_end
984 && sal.symtab != sal_end.symtab)
985 error (_("Specified start and end are in different files."));
986 if (dummy_beg && dummy_end)
987 error (_("Two empty args do not say what lines to list."));
989 /* If line was specified by address,
990 first print exactly which line, and which file.
992 In this case, sal.symtab == 0 means address is outside of all
993 known source files, not that user failed to give a filename. */
996 struct gdbarch *gdbarch;
999 /* FIXME-32x64--assumes sal.pc fits in long. */
1000 error (_("No source file for address %s."),
1001 hex_string ((unsigned long) sal.pc));
1003 gdbarch = get_objfile_arch (sal.symtab->objfile);
1004 sym = find_pc_function (sal.pc);
1006 printf_filtered ("%s is in %s (%s:%d).\n",
1007 paddress (gdbarch, sal.pc),
1008 SYMBOL_PRINT_NAME (sym),
1009 sal.symtab->filename, sal.line);
1011 printf_filtered ("%s is at %s:%d.\n",
1012 paddress (gdbarch, sal.pc),
1013 sal.symtab->filename, sal.line);
1016 /* If line was not specified by just a line number, and it does not
1017 imply a symtab, it must be an undebuggable symbol which means no
1020 if (!linenum_beg && sal.symtab == 0)
1021 error (_("No line number known for %s."), arg);
1023 /* If this command is repeated with RET,
1024 turn it into the no-arg variant. */
1029 if (dummy_beg && sal_end.symtab == 0)
1030 error (_("No default source file yet. Do \"help list\"."));
1032 print_source_lines (sal_end.symtab,
1033 max (sal_end.line - (get_lines_to_list () - 1), 1),
1034 sal_end.line + 1, 0);
1035 else if (sal.symtab == 0)
1036 error (_("No default source file yet. Do \"help list\"."));
1039 int first_line = sal.line - get_lines_to_list () / 2;
1041 if (first_line < 1) first_line = 1;
1043 print_source_lines (sal.symtab,
1045 first_line + get_lines_to_list (),
1049 print_source_lines (sal.symtab, sal.line,
1051 ? sal.line + get_lines_to_list ()
1052 : sal_end.line + 1),
1056 /* Subroutine of disassemble_command to simplify it.
1057 Perform the disassembly.
1058 NAME is the name of the function if known, or NULL.
1059 [LOW,HIGH) are the range of addresses to disassemble.
1060 MIXED is non-zero to print source with the assembler. */
1063 print_disassembly (struct gdbarch *gdbarch, const char *name,
1064 CORE_ADDR low, CORE_ADDR high, int flags)
1067 if (!tui_is_window_visible (DISASSEM_WIN))
1070 printf_filtered ("Dump of assembler code ");
1072 printf_filtered ("for function %s:\n", name);
1074 printf_filtered ("from %s to %s:\n",
1075 paddress (gdbarch, low), paddress (gdbarch, high));
1077 /* Dump the specified range. */
1078 gdb_disassembly (gdbarch, current_uiout, 0, flags, -1, low, high);
1080 printf_filtered ("End of assembler dump.\n");
1081 gdb_flush (gdb_stdout);
1086 tui_show_assembly (gdbarch, low);
1091 /* Subroutine of disassemble_command to simplify it.
1092 Print a disassembly of the current function according to FLAGS. */
1095 disassemble_current_function (int flags)
1097 struct frame_info *frame;
1098 struct gdbarch *gdbarch;
1099 CORE_ADDR low, high, pc;
1102 frame = get_selected_frame (_("No frame selected."));
1103 gdbarch = get_frame_arch (frame);
1104 pc = get_frame_pc (frame);
1105 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
1106 error (_("No function contains program counter for selected frame."));
1108 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1111 /* FIXME: cagney/2004-02-07: This should be an observer. */
1112 low = tui_get_low_disassembly_address (gdbarch, low, pc);
1114 low += gdbarch_deprecated_function_start_offset (gdbarch);
1116 print_disassembly (gdbarch, name, low, high, flags);
1119 /* Dump a specified section of assembly code.
1123 - dump the assembly code for the function of the current pc
1124 disassemble [/mr] addr
1125 - dump the assembly code for the function at ADDR
1126 disassemble [/mr] low,high
1127 disassemble [/mr] low,+length
1128 - dump the assembly code in the range [LOW,HIGH), or [LOW,LOW+length)
1130 A /m modifier will include source code with the assembly.
1131 A /r modifier will include raw instructions in hex with the assembly. */
1134 disassemble_command (char *arg, int from_tty)
1136 struct gdbarch *gdbarch = get_current_arch ();
1137 CORE_ADDR low, high;
1145 if (arg && *arg == '/')
1150 error (_("Missing modifier."));
1152 while (*arg && ! isspace (*arg))
1157 flags |= DISASSEMBLY_SOURCE;
1160 flags |= DISASSEMBLY_RAW_INSN;
1163 error (_("Invalid disassembly modifier."));
1167 while (isspace (*arg))
1171 if (! arg || ! *arg)
1173 flags |= DISASSEMBLY_OMIT_FNAME;
1174 disassemble_current_function (flags);
1178 pc = value_as_address (parse_to_comma_and_eval (&arg));
1184 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
1185 error (_("No function contains specified address."));
1187 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1190 /* FIXME: cagney/2004-02-07: This should be an observer. */
1191 low = tui_get_low_disassembly_address (gdbarch, low, pc);
1193 low += gdbarch_deprecated_function_start_offset (gdbarch);
1194 flags |= DISASSEMBLY_OMIT_FNAME;
1198 /* Two arguments. */
1201 while (isspace (*arg))
1208 high = parse_and_eval_address (arg);
1213 print_disassembly (gdbarch, name, low, high, flags);
1217 make_command (char *arg, int from_tty)
1225 p = xmalloc (sizeof ("make ") + strlen (arg));
1226 strcpy (p, "make ");
1227 strcpy (p + sizeof ("make ") - 1, arg);
1230 shell_escape (p, from_tty);
1234 show_user (char *args, int from_tty)
1236 struct cmd_list_element *c;
1237 extern struct cmd_list_element *cmdlist;
1241 char *comname = args;
1243 c = lookup_cmd (&comname, cmdlist, "", 0, 1);
1244 if (c->class != class_user)
1245 error (_("Not a user command."));
1246 show_user_1 (c, "", args, gdb_stdout);
1250 for (c = cmdlist; c; c = c->next)
1252 if (c->class == class_user || c->prefixlist != NULL)
1253 show_user_1 (c, "", c->name, gdb_stdout);
1258 /* Search through names of commands and documentations for a certain
1259 regular expression. */
1262 apropos_command (char *searchstr, int from_tty)
1267 if (searchstr == NULL)
1268 error (_("REGEXP string is empty"));
1270 code = regcomp (&pattern, searchstr, REG_ICASE);
1273 struct cleanup *cleanups;
1275 cleanups = make_regfree_cleanup (&pattern);
1276 apropos_cmd (gdb_stdout, cmdlist, &pattern, "");
1277 do_cleanups (cleanups);
1281 char *err = get_regcomp_error (code, &pattern);
1283 make_cleanup (xfree, err);
1284 error (_("Error in regular expression: %s"), err);
1288 /* Subroutine of alias_command to simplify it.
1289 Return the first N elements of ARGV flattened back to a string
1290 with a space separating each element.
1291 ARGV may not be NULL.
1292 This does not take care of quoting elements in case they contain spaces
1296 argv_to_dyn_string (char **argv, int n)
1299 dyn_string_t result = dyn_string_new (10);
1301 gdb_assert (argv != NULL);
1302 gdb_assert (n >= 0 && n <= countargv (argv));
1304 for (i = 0; i < n; ++i)
1307 dyn_string_append_char (result, ' ');
1308 dyn_string_append_cstr (result, argv[i]);
1314 /* Subroutine of alias_command to simplify it.
1315 Return TRUE if COMMAND exists, unambiguously. Otherwise FALSE. */
1318 valid_command_p (char *command)
1320 struct cmd_list_element *c;
1322 c = lookup_cmd_1 (& command, cmdlist, NULL, 1);
1324 if (c == NULL || c == (struct cmd_list_element *) -1)
1327 /* This is the slightly tricky part.
1328 lookup_cmd_1 will return a pointer to the last part of COMMAND
1329 to match, leaving COMMAND pointing at the remainder. */
1330 while (*command == ' ' || *command == '\t')
1332 return *command == '\0';
1335 /* Make an alias of an existing command. */
1338 alias_command (char *args, int from_tty)
1340 int i, alias_argc, command_argc;
1341 int abbrev_flag = 0;
1342 char *args2, *equals, *alias, *command;
1343 char **alias_argv, **command_argv;
1344 dyn_string_t alias_dyn_string, command_dyn_string;
1345 struct cmd_list_element *c;
1346 static const char usage[] = N_("Usage: alias [-a] [--] ALIAS = COMMAND");
1348 if (args == NULL || strchr (args, '=') == NULL)
1351 args2 = xstrdup (args);
1352 make_cleanup (xfree, args2);
1353 equals = strchr (args2, '=');
1355 alias_argv = gdb_buildargv (args2);
1356 make_cleanup_freeargv (alias_argv);
1357 command_argv = gdb_buildargv (equals + 1);
1358 make_cleanup_freeargv (command_argv);
1360 for (i = 0; alias_argv[i] != NULL; )
1362 if (strcmp (alias_argv[i], "-a") == 0)
1367 else if (strcmp (alias_argv[i], "--") == 0)
1376 if (alias_argv[0] == NULL || command_argv[0] == NULL
1377 || *alias_argv[0] == '\0' || *command_argv[0] == '\0')
1380 for (i = 0; alias_argv[i] != NULL; ++i)
1382 if (! valid_user_defined_cmd_name_p (alias_argv[i]))
1385 error (_("Invalid command name: %s"), alias_argv[i]);
1387 error (_("Invalid command element name: %s"), alias_argv[i]);
1391 alias_argc = countargv (alias_argv);
1392 command_argc = countargv (command_argv);
1394 /* COMMAND must exist.
1395 Reconstruct the command to remove any extraneous spaces,
1396 for better error messages. */
1397 command_dyn_string = argv_to_dyn_string (command_argv, command_argc);
1398 make_cleanup_dyn_string_delete (command_dyn_string);
1399 command = dyn_string_buf (command_dyn_string);
1400 if (! valid_command_p (command))
1401 error (_("Invalid command to alias to: %s"), command);
1403 /* ALIAS must not exist. */
1404 alias_dyn_string = argv_to_dyn_string (alias_argv, alias_argc);
1405 make_cleanup_dyn_string_delete (alias_dyn_string);
1406 alias = dyn_string_buf (alias_dyn_string);
1407 if (valid_command_p (alias))
1408 error (_("Alias already exists: %s"), alias);
1410 /* If ALIAS is one word, it is an alias for the entire COMMAND.
1411 Example: alias spe = set print elements
1413 Otherwise ALIAS and COMMAND must have the same number of words,
1414 and every word except the last must match; and the last word of
1415 ALIAS is made an alias of the last word of COMMAND.
1416 Example: alias set print elms = set pr elem
1417 Note that unambiguous abbreviations are allowed. */
1419 if (alias_argc == 1)
1421 /* add_cmd requires *we* allocate space for name, hence the xstrdup. */
1422 add_com_alias (xstrdup (alias_argv[0]), command, class_alias,
1428 dyn_string_t alias_prefix_dyn_string, command_prefix_dyn_string;
1429 char *alias_prefix, *command_prefix;
1430 struct cmd_list_element *c_alias, *c_command;
1432 if (alias_argc != command_argc)
1433 error (_("Mismatched command length between ALIAS and COMMAND."));
1435 /* Create copies of ALIAS and COMMAND without the last word,
1436 and use that to verify the leading elements match. */
1437 alias_prefix_dyn_string =
1438 argv_to_dyn_string (alias_argv, alias_argc - 1);
1439 make_cleanup_dyn_string_delete (alias_prefix_dyn_string);
1440 command_prefix_dyn_string =
1441 argv_to_dyn_string (alias_argv, command_argc - 1);
1442 make_cleanup_dyn_string_delete (command_prefix_dyn_string);
1443 alias_prefix = dyn_string_buf (alias_prefix_dyn_string);
1444 command_prefix = dyn_string_buf (command_prefix_dyn_string);
1446 c_command = lookup_cmd_1 (& command_prefix, cmdlist, NULL, 1);
1447 /* We've already tried to look up COMMAND. */
1448 gdb_assert (c_command != NULL
1449 && c_command != (struct cmd_list_element *) -1);
1450 gdb_assert (c_command->prefixlist != NULL);
1451 c_alias = lookup_cmd_1 (& alias_prefix, cmdlist, NULL, 1);
1452 if (c_alias != c_command)
1453 error (_("ALIAS and COMMAND prefixes do not match."));
1455 /* add_cmd requires *we* allocate space for name, hence the xstrdup. */
1456 add_alias_cmd (xstrdup (alias_argv[alias_argc - 1]),
1457 command_argv[command_argc - 1],
1458 class_alias, abbrev_flag, c_command->prefixlist);
1462 /* Print a list of files and line numbers which a user may choose from
1463 in order to list a function which was specified ambiguously (as
1464 with `list classname::overloadedfuncname', for example). The
1465 vector in SALS provides the filenames and line numbers. */
1468 ambiguous_line_spec (struct symtabs_and_lines *sals)
1472 for (i = 0; i < sals->nelts; ++i)
1473 printf_filtered (_("file: \"%s\", line number: %d\n"),
1474 sals->sals[i].symtab->filename, sals->sals[i].line);
1477 /* Sort function for filter_sals. */
1480 compare_symtabs (const void *a, const void *b)
1482 const struct symtab_and_line *sala = a;
1483 const struct symtab_and_line *salb = b;
1486 if (!sala->symtab->dirname)
1488 if (salb->symtab->dirname)
1491 else if (!salb->symtab->dirname)
1493 if (sala->symtab->dirname)
1498 r = filename_cmp (sala->symtab->dirname, salb->symtab->dirname);
1503 r = filename_cmp (sala->symtab->filename, salb->symtab->filename);
1507 if (sala->line < salb->line)
1509 return sala->line == salb->line ? 0 : 1;
1512 /* Remove any SALs that do not match the current program space, or
1513 which appear to be "file:line" duplicates. */
1516 filter_sals (struct symtabs_and_lines *sals)
1521 for (i = 0; i < sals->nelts; ++i)
1523 if (sals->sals[i].pspace == current_program_space
1524 && sals->sals[i].symtab != NULL)
1526 sals->sals[out] = sals->sals[i];
1532 qsort (sals->sals, sals->nelts, sizeof (struct symtab_and_line),
1537 for (i = 1; i < sals->nelts; ++i)
1539 if (compare_symtabs (&sals->sals[prev], &sals->sals[i]))
1541 /* Symtabs differ. */
1542 sals->sals[out] = sals->sals[i];
1549 if (sals->nelts == 0)
1557 set_debug (char *arg, int from_tty)
1559 printf_unfiltered (_("\"set debug\" must be followed by "
1560 "the name of a debug subcommand.\n"));
1561 help_list (setdebuglist, "set debug ", -1, gdb_stdout);
1565 show_debug (char *args, int from_tty)
1567 cmd_show_list (showdebuglist, from_tty, "");
1571 init_cmd_lists (void)
1573 max_user_call_depth = 1024;
1583 enablebreaklist = NULL;
1588 showhistlist = NULL;
1589 unsethistlist = NULL;
1590 maintenancelist = NULL;
1591 maintenanceinfolist = NULL;
1592 maintenanceprintlist = NULL;
1593 setprintlist = NULL;
1594 showprintlist = NULL;
1595 setchecklist = NULL;
1596 showchecklist = NULL;
1601 show_info_verbose (struct ui_file *file, int from_tty,
1602 struct cmd_list_element *c,
1606 fprintf_filtered (file,
1607 _("Verbose printing of informational messages is %s.\n"),
1610 fprintf_filtered (file, _("Verbosity is %s.\n"), value);
1614 show_history_expansion_p (struct ui_file *file, int from_tty,
1615 struct cmd_list_element *c, const char *value)
1617 fprintf_filtered (file, _("History expansion on command input is %s.\n"),
1622 show_baud_rate (struct ui_file *file, int from_tty,
1623 struct cmd_list_element *c, const char *value)
1625 fprintf_filtered (file, _("Baud rate for remote serial I/O is %s.\n"),
1630 show_remote_debug (struct ui_file *file, int from_tty,
1631 struct cmd_list_element *c, const char *value)
1633 fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"),
1638 show_remote_timeout (struct ui_file *file, int from_tty,
1639 struct cmd_list_element *c, const char *value)
1641 fprintf_filtered (file,
1642 _("Timeout limit to wait for target to respond is %s.\n"),
1647 show_max_user_call_depth (struct ui_file *file, int from_tty,
1648 struct cmd_list_element *c, const char *value)
1650 fprintf_filtered (file,
1651 _("The max call depth for user-defined commands is %s.\n"),
1657 init_cli_cmds (void)
1659 struct cmd_list_element *c;
1660 char *source_help_text;
1662 /* Define the classes of commands.
1663 They will appear in the help list in alphabetical order. */
1665 add_cmd ("internals", class_maintenance, NULL, _("\
1666 Maintenance commands.\n\
1667 Some gdb commands are provided just for use by gdb maintainers.\n\
1668 These commands are subject to frequent change, and may not be as\n\
1669 well documented as user commands."),
1671 add_cmd ("obscure", class_obscure, NULL, _("Obscure features."), &cmdlist);
1672 add_cmd ("aliases", class_alias, NULL,
1673 _("Aliases of other commands."), &cmdlist);
1674 add_cmd ("user-defined", class_user, NULL, _("\
1675 User-defined commands.\n\
1676 The commands in this class are those defined by the user.\n\
1677 Use the \"define\" command to define a command."), &cmdlist);
1678 add_cmd ("support", class_support, NULL, _("Support facilities."), &cmdlist);
1680 add_cmd ("status", class_info, NULL, _("Status inquiries."), &cmdlist);
1681 add_cmd ("files", class_files, NULL, _("Specifying and examining files."),
1683 add_cmd ("breakpoints", class_breakpoint, NULL,
1684 _("Making program stop at certain points."), &cmdlist);
1685 add_cmd ("data", class_vars, NULL, _("Examining data."), &cmdlist);
1686 add_cmd ("stack", class_stack, NULL, _("\
1687 Examining the stack.\n\
1688 The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
1689 counting from zero for the innermost (currently executing) frame.\n\n\
1690 At any time gdb identifies one frame as the \"selected\" frame.\n\
1691 Variable lookups are done with respect to the selected frame.\n\
1692 When the program being debugged stops, gdb selects the innermost frame.\n\
1693 The commands below can be used to select other frames by number or address."),
1695 add_cmd ("running", class_run, NULL, _("Running the program."), &cmdlist);
1697 /* Define general commands. */
1699 add_com ("pwd", class_files, pwd_command, _("\
1700 Print working directory. This is used for your program as well."));
1702 c = add_cmd ("cd", class_files, cd_command, _("\
1703 Set working directory to DIR for debugger and program being debugged.\n\
1704 The change does not take effect for the program being debugged\n\
1705 until the next time it is started."), &cmdlist);
1706 set_cmd_completer (c, filename_completer);
1708 add_com ("echo", class_support, echo_command, _("\
1709 Print a constant string. Give string as argument.\n\
1710 C escape sequences may be used in the argument.\n\
1711 No newline is added at the end of the argument;\n\
1712 use \"\\n\" if you want a newline to be printed.\n\
1713 Since leading and trailing whitespace are ignored in command arguments,\n\
1714 if you want to print some you must use \"\\\" before leading whitespace\n\
1715 to be printed or after trailing whitespace."));
1716 add_com ("document", class_support, document_command, _("\
1717 Document a user-defined command.\n\
1718 Give command name as argument. Give documentation on following lines.\n\
1719 End with a line of just \"end\"."));
1720 add_com ("define", class_support, define_command, _("\
1721 Define a new command name. Command name is argument.\n\
1722 Definition appears on following lines, one command per line.\n\
1723 End with a line of just \"end\".\n\
1724 Use the \"document\" command to give documentation for the new command.\n\
1725 Commands defined in this way may have up to ten arguments."));
1727 source_help_text = xstrprintf (_("\
1728 Read commands from a file named FILE.\n\
1730 Usage: source [-s] [-v] FILE\n\
1731 -s: search for the script in the source search path,\n\
1732 even if FILE contains directories.\n\
1733 -v: each command in FILE is echoed as it is executed.\n\
1735 Note that the file \"%s\" is read automatically in this way\n\
1736 when GDB is started."), gdbinit);
1737 c = add_cmd ("source", class_support, source_command,
1738 source_help_text, &cmdlist);
1739 set_cmd_completer (c, filename_completer);
1741 add_setshow_enum_cmd ("script-extension", class_support,
1742 script_ext_enums, &script_ext_mode, _("\
1743 Set mode for script filename extension recognition."), _("\
1744 Show mode for script filename extension recognition."), _("\
1745 off == no filename extension recognition (all sourced files are GDB scripts)\n\
1746 soft == evaluate script according to filename extension, fallback to GDB script"
1748 strict == evaluate script according to filename extension, error if not supported"
1751 show_script_ext_mode,
1752 &setlist, &showlist);
1754 add_com ("quit", class_support, quit_command, _("Exit gdb."));
1755 c = add_com ("help", class_support, help_command,
1756 _("Print list of commands."));
1757 set_cmd_completer (c, command_completer);
1758 add_com_alias ("q", "quit", class_support, 1);
1759 add_com_alias ("h", "help", class_support, 1);
1761 add_setshow_boolean_cmd ("verbose", class_support, &info_verbose, _("\
1762 Set verbosity."), _("\
1763 Show verbosity."), NULL,
1766 &setlist, &showlist);
1768 add_prefix_cmd ("history", class_support, set_history,
1769 _("Generic command for setting command history parameters."),
1770 &sethistlist, "set history ", 0, &setlist);
1771 add_prefix_cmd ("history", class_support, show_history,
1772 _("Generic command for showing command history parameters."),
1773 &showhistlist, "show history ", 0, &showlist);
1775 add_setshow_boolean_cmd ("expansion", no_class, &history_expansion_p, _("\
1776 Set history expansion on command input."), _("\
1777 Show history expansion on command input."), _("\
1778 Without an argument, history expansion is enabled."),
1780 show_history_expansion_p,
1781 &sethistlist, &showhistlist);
1783 add_prefix_cmd ("info", class_info, info_command, _("\
1784 Generic command for showing things about the program being debugged."),
1785 &infolist, "info ", 0, &cmdlist);
1786 add_com_alias ("i", "info", class_info, 1);
1787 add_com_alias ("inf", "info", class_info, 1);
1789 add_com ("complete", class_obscure, complete_command,
1790 _("List the completions for the rest of the line as a command."));
1792 add_prefix_cmd ("show", class_info, show_command, _("\
1793 Generic command for showing things about the debugger."),
1794 &showlist, "show ", 0, &cmdlist);
1795 /* Another way to get at the same thing. */
1796 add_info ("set", show_command, _("Show all GDB settings."));
1798 add_cmd ("commands", no_set_class, show_commands, _("\
1799 Show the history of commands you typed.\n\
1800 You can supply a command number to start with, or a `+' to start after\n\
1801 the previous command number shown."),
1804 add_cmd ("version", no_set_class, show_version,
1805 _("Show what version of GDB this is."), &showlist);
1807 add_com ("while", class_support, while_command, _("\
1808 Execute nested commands WHILE the conditional expression is non zero.\n\
1809 The conditional expression must follow the word `while' 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 `end'."));
1813 add_com ("if", class_support, if_command, _("\
1814 Execute nested commands once IF the conditional expression is non zero.\n\
1815 The conditional expression must follow the word `if' and must in turn be\n\
1816 followed by a new line. The nested commands must be entered one per line,\n\
1817 and should be terminated by the word 'else' or `end'. If an else clause\n\
1818 is used, the same rules apply to its nested commands as to the first ones."));
1820 /* If target is open when baud changes, it doesn't take effect until
1821 the next open (I think, not sure). */
1822 add_setshow_zinteger_cmd ("remotebaud", no_class, &baud_rate, _("\
1823 Set baud rate for remote serial I/O."), _("\
1824 Show baud rate for remote serial I/O."), _("\
1825 This value is used to set the speed of the serial port when debugging\n\
1826 using remote targets."),
1829 &setlist, &showlist);
1831 add_setshow_zinteger_cmd ("remote", no_class, &remote_debug, _("\
1832 Set debugging of remote protocol."), _("\
1833 Show debugging of remote protocol."), _("\
1834 When enabled, each packet sent or received with the remote target\n\
1838 &setdebuglist, &showdebuglist);
1840 add_setshow_integer_cmd ("remotetimeout", no_class, &remote_timeout, _("\
1841 Set timeout limit to wait for target to respond."), _("\
1842 Show timeout limit to wait for target to respond."), _("\
1843 This value is used to set the time limit for gdb to wait for a response\n\
1846 show_remote_timeout,
1847 &setlist, &showlist);
1849 add_prefix_cmd ("debug", no_class, set_debug,
1850 _("Generic command for setting gdb debugging flags"),
1851 &setdebuglist, "set debug ", 0, &setlist);
1853 add_prefix_cmd ("debug", no_class, show_debug,
1854 _("Generic command for showing gdb debugging flags"),
1855 &showdebuglist, "show debug ", 0, &showlist);
1857 c = add_com ("shell", class_support, shell_escape, _("\
1858 Execute the rest of the line as a shell command.\n\
1859 With no arguments, run an inferior shell."));
1860 set_cmd_completer (c, filename_completer);
1862 c = add_com ("edit", class_files, edit_command, _("\
1863 Edit specified file or function.\n\
1864 With no argument, edits file containing most recent line listed.\n\
1865 Editing targets can be specified in these ways:\n\
1866 FILE:LINENUM, to edit at that line in that file,\n\
1867 FUNCTION, to edit at the beginning of that function,\n\
1868 FILE:FUNCTION, to distinguish among like-named static functions.\n\
1869 *ADDRESS, to edit at the line containing that address.\n\
1870 Uses EDITOR environment variable contents as editor (or ex as default)."));
1872 c->completer = location_completer;
1874 add_com ("list", class_files, list_command, _("\
1875 List specified function or line.\n\
1876 With no argument, lists ten more lines after or around previous listing.\n\
1877 \"list -\" lists the ten lines before a previous ten-line listing.\n\
1878 One argument specifies a line, and ten lines are listed around that line.\n\
1879 Two arguments with comma between specify starting and ending lines to list.\n\
1880 Lines can be specified in these ways:\n\
1881 LINENUM, to list around that line in current file,\n\
1882 FILE:LINENUM, to list around that line in that file,\n\
1883 FUNCTION, to list around beginning of that function,\n\
1884 FILE:FUNCTION, to distinguish among like-named static functions.\n\
1885 *ADDRESS, to list around the line containing that address.\n\
1886 With two args if one is empty it stands for ten lines away from \
1890 add_com_alias ("l", "list", class_files, 1);
1892 add_com_alias ("v", "list", class_files, 1);
1895 add_com_alias ("file", "list", class_files, 1);
1897 c = add_com ("disassemble", class_vars, disassemble_command, _("\
1898 Disassemble a specified section of memory.\n\
1899 Default is the function surrounding the pc of the selected frame.\n\
1900 With a /m modifier, source lines are included (if available).\n\
1901 With a /r modifier, raw instructions in hex are included.\n\
1902 With a single argument, the function surrounding that address is dumped.\n\
1903 Two arguments (separated by a comma) are taken as a range of memory to dump,\n\
1904 in the form of \"start,end\", or \"start,+length\"."));
1905 set_cmd_completer (c, location_completer);
1907 add_com_alias ("va", "disassemble", class_xdb, 0);
1909 add_com_alias ("!", "shell", class_support, 0);
1911 c = add_com ("make", class_support, make_command, _("\
1912 Run the ``make'' program using the rest of the line as arguments."));
1913 set_cmd_completer (c, filename_completer);
1914 add_cmd ("user", no_class, show_user, _("\
1915 Show definitions of user defined commands.\n\
1916 Argument is the name of the user defined command.\n\
1917 With no argument, show definitions of all user defined commands."), &showlist);
1918 add_com ("apropos", class_support, apropos_command,
1919 _("Search for commands matching a REGEXP"));
1921 add_setshow_integer_cmd ("max-user-call-depth", no_class,
1922 &max_user_call_depth, _("\
1923 Set the max call depth for user-defined commands."), _("\
1924 Show the max call depth for user-defined commands."), NULL,
1926 show_max_user_call_depth,
1927 &setlist, &showlist);
1929 add_setshow_boolean_cmd ("trace-commands", no_class, &trace_commands, _("\
1930 Set tracing of GDB CLI commands."), _("\
1931 Show state of GDB CLI command tracing."), _("\
1932 When 'on', each command is displayed as it is executed."),
1935 &setlist, &showlist);
1937 c = add_com ("alias", class_support, alias_command, _("\
1938 Define a new command that is an alias of an existing command.\n\
1939 Usage: alias [-a] [--] ALIAS = COMMAND\n\
1940 ALIAS is the name of the alias command to create.\n\
1941 COMMAND is the command being aliased to.\n\
1942 If \"-a\" is specified, the command is an abbreviation,\n\
1943 and will not appear in help command list output.\n\
1946 Make \"spe\" an alias of \"set print elements\":\n\
1947 alias spe = set print elements\n\
1948 Make \"elms\" an alias of \"elements\" in the \"set print\" command:\n\
1949 alias -a set print elms = set print elements"));