3 Copyright (C) 2000-2015 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 "arch-utils.h"
22 #include "dyn-string.h"
23 #include "readline/readline.h"
24 #include "readline/tilde.h"
25 #include "completer.h"
26 #include "target.h" /* For baud_rate, remote_debug and remote_timeout. */
27 #include "gdb_wait.h" /* For shell escape implementation. */
28 #include "gdb_regex.h" /* Used by apropos_command. */
29 #include "gdb_vfork.h"
31 #include "expression.h"
35 #include "filenames.h" /* For DOSish file names. */
39 #include "tracepoint.h"
40 #include "filestuff.h"
45 #include "cli/cli-decode.h"
46 #include "cli/cli-script.h"
47 #include "cli/cli-setshow.h"
48 #include "cli/cli-cmds.h"
49 #include "cli/cli-utils.h"
51 #include "extension.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 /* Prototypes for local utility functions */
91 static void ambiguous_line_spec (struct symtabs_and_lines *);
93 static void filter_sals (struct symtabs_and_lines *);
96 /* Limit the call depth of user-defined commands */
97 unsigned int max_user_call_depth;
99 /* Define all cmd_list_elements. */
101 /* Chain containing all defined commands. */
103 struct cmd_list_element *cmdlist;
105 /* Chain containing all defined info subcommands. */
107 struct cmd_list_element *infolist;
109 /* Chain containing all defined enable subcommands. */
111 struct cmd_list_element *enablelist;
113 /* Chain containing all defined disable subcommands. */
115 struct cmd_list_element *disablelist;
117 /* Chain containing all defined stop subcommands. */
119 struct cmd_list_element *stoplist;
121 /* Chain containing all defined delete subcommands. */
123 struct cmd_list_element *deletelist;
125 /* Chain containing all defined detach subcommands. */
127 struct cmd_list_element *detachlist;
129 /* Chain containing all defined kill subcommands. */
131 struct cmd_list_element *killlist;
133 /* Chain containing all defined set subcommands */
135 struct cmd_list_element *setlist;
137 /* Chain containing all defined unset subcommands */
139 struct cmd_list_element *unsetlist;
141 /* Chain containing all defined show subcommands. */
143 struct cmd_list_element *showlist;
145 /* Chain containing all defined \"set history\". */
147 struct cmd_list_element *sethistlist;
149 /* Chain containing all defined \"show history\". */
151 struct cmd_list_element *showhistlist;
153 /* Chain containing all defined \"unset history\". */
155 struct cmd_list_element *unsethistlist;
157 /* Chain containing all defined maintenance subcommands. */
159 struct cmd_list_element *maintenancelist;
161 /* Chain containing all defined "maintenance info" subcommands. */
163 struct cmd_list_element *maintenanceinfolist;
165 /* Chain containing all defined "maintenance print" subcommands. */
167 struct cmd_list_element *maintenanceprintlist;
169 struct cmd_list_element *setprintlist;
171 struct cmd_list_element *showprintlist;
173 struct cmd_list_element *setdebuglist;
175 struct cmd_list_element *showdebuglist;
177 struct cmd_list_element *setchecklist;
179 struct cmd_list_element *showchecklist;
181 /* Command tracing state. */
183 int source_verbose = 0;
184 int trace_commands = 0;
186 /* 'script-extension' option support. */
188 static const char script_ext_off[] = "off";
189 static const char script_ext_soft[] = "soft";
190 static const char script_ext_strict[] = "strict";
192 static const char *const script_ext_enums[] = {
199 static const char *script_ext_mode = script_ext_soft;
201 /* Utility used everywhere when at least one argument is needed and
205 error_no_arg (const char *why)
207 error (_("Argument required (%s)."), why);
210 /* The "info" command is defined as a prefix, with allow_unknown = 0.
211 Therefore, its own definition is called only for "info" with no
215 info_command (char *arg, int from_tty)
217 printf_unfiltered (_("\"info\" must be followed by "
218 "the name of an info command.\n"));
219 help_list (infolist, "info ", all_commands, gdb_stdout);
222 /* The "show" command with no arguments shows all the settings. */
225 show_command (char *arg, int from_tty)
227 cmd_show_list (showlist, from_tty, "");
230 /* Provide documentation on command or list given by COMMAND. FROM_TTY
234 help_command (char *command, int from_tty)
236 help_cmd (command, gdb_stdout);
239 /* Note: The "complete" command is used by Emacs to implement completion.
240 [Is that why this function writes output with *_unfiltered?] */
243 complete_command (char *arg, int from_tty)
246 char *point, *arg_prefix;
247 VEC (char_ptr) *completions;
251 if (max_completions == 0)
253 /* Only print this for non-mi frontends. An MI frontend may not
254 be able to handle this. */
255 if (!ui_out_is_mi_like_p (current_uiout))
257 printf_unfiltered (_("max-completions is zero,"
258 " completion is disabled.\n"));
265 argpoint = strlen (arg);
267 /* complete_line assumes that its first argument is somewhere
268 within, and except for filenames at the beginning of, the word to
269 be completed. The following crude imitation of readline's
270 word-breaking tries to accomodate this. */
271 point = arg + argpoint;
274 if (strchr (rl_completer_word_break_characters, point[-1]) != 0)
279 arg_prefix = alloca (point - arg + 1);
280 memcpy (arg_prefix, arg, point - arg);
281 arg_prefix[point - arg] = 0;
283 completions = complete_line (point, arg, argpoint);
287 int ix, size = VEC_length (char_ptr, completions);
288 char *item, *prev = NULL;
290 qsort (VEC_address (char_ptr, completions), size,
291 sizeof (char *), compare_strings);
293 /* We do extra processing here since we only want to print each
295 for (ix = 0; VEC_iterate (char_ptr, completions, ix, item); ++ix)
297 if (prev == NULL || strcmp (item, prev) != 0)
299 printf_unfiltered ("%s%s\n", arg_prefix, item);
308 VEC_free (char_ptr, completions);
310 if (size == max_completions)
312 /* ARG_PREFIX and POINT are included in the output so that emacs
313 will include the message in the output. */
314 printf_unfiltered (_("%s%s %s\n"),
316 get_max_completions_reached_message ());
322 is_complete_command (struct cmd_list_element *c)
324 return cmd_cfunc_eq (c, complete_command);
328 show_version (char *args, int from_tty)
330 print_gdb_version (gdb_stdout);
331 printf_filtered ("\n");
335 show_configuration (char *args, int from_tty)
337 print_gdb_configuration (gdb_stdout);
340 /* Handle the quit command. */
343 quit_command (char *args, int from_tty)
345 if (!quit_confirm ())
346 error (_("Not confirmed."));
348 query_if_trace_running (from_tty);
350 quit_force (args, from_tty);
354 pwd_command (char *args, int from_tty)
357 error (_("The \"pwd\" command does not take an argument: %s"), args);
358 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
359 error (_("Error finding name of working directory: %s"),
360 safe_strerror (errno));
362 if (strcmp (gdb_dirbuf, current_directory) != 0)
363 printf_unfiltered (_("Working directory %s\n (canonically %s).\n"),
364 current_directory, gdb_dirbuf);
366 printf_unfiltered (_("Working directory %s.\n"), current_directory);
370 cd_command (char *dir, int from_tty)
373 /* Found something other than leading repetitions of "/..". */
376 struct cleanup *cleanup;
378 /* If the new directory is absolute, repeat is a no-op; if relative,
379 repeat might be useful but is more likely to be a mistake. */
385 dir = tilde_expand (dir);
386 cleanup = make_cleanup (xfree, dir);
389 perror_with_name (dir);
391 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
392 /* There's too much mess with DOSish names like "d:", "d:.",
393 "d:./foo" etc. Instead of having lots of special #ifdef'ed code,
394 simply get the canonicalized name of the current directory. */
395 dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
399 if (IS_DIR_SEPARATOR (dir[len - 1]))
401 /* Remove the trailing slash unless this is a root directory
402 (including a drive letter on non-Unix systems). */
403 if (!(len == 1) /* "/" */
404 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
405 && !(len == 3 && dir[1] == ':') /* "d:/" */
411 dir = savestring (dir, len);
412 if (IS_ABSOLUTE_PATH (dir))
413 current_directory = dir;
416 if (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]))
417 current_directory = concat (current_directory, dir, (char *)NULL);
419 current_directory = concat (current_directory, SLASH_STRING,
424 /* Now simplify any occurrences of `.' and `..' in the pathname. */
427 for (p = current_directory; *p;)
429 if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.'
430 && (p[2] == 0 || IS_DIR_SEPARATOR (p[2])))
431 memmove (p, p + 2, strlen (p + 2) + 1);
432 else if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' && p[2] == '.'
433 && (p[3] == 0 || IS_DIR_SEPARATOR (p[3])))
437 /* Search backwards for the directory just before the "/.."
438 and obliterate it and the "/..". */
441 while (q != current_directory && !IS_DIR_SEPARATOR (q[-1]))
444 if (q == current_directory)
445 /* current_directory is
446 a relative pathname ("can't happen"--leave it alone). */
450 memmove (q - 1, p + 3, strlen (p + 3) + 1);
455 /* We are dealing with leading repetitions of "/..", for
456 example "/../..", which is the Mach super-root. */
466 forget_cached_source_info ();
469 pwd_command ((char *) 0, 1);
471 do_cleanups (cleanup);
474 /* Show the current value of the 'script-extension' option. */
477 show_script_ext_mode (struct ui_file *file, int from_tty,
478 struct cmd_list_element *c, const char *value)
480 fprintf_filtered (file,
481 _("Script filename extension recognition is \"%s\".\n"),
485 /* Try to open SCRIPT_FILE.
486 If successful, the full path name is stored in *FULL_PATHP,
487 the stream is stored in *STREAMP, and return 1.
488 The caller is responsible for freeing *FULL_PATHP.
489 If not successful, return 0; errno is set for the last file
492 If SEARCH_PATH is non-zero, and the file isn't found in cwd,
493 search for it in the source search path. */
496 find_and_open_script (const char *script_file, int search_path,
497 FILE **streamp, char **full_pathp)
501 struct cleanup *old_cleanups;
502 int search_flags = OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH;
504 file = tilde_expand (script_file);
505 old_cleanups = make_cleanup (xfree, file);
508 search_flags |= OPF_SEARCH_IN_PATH;
510 /* Search for and open 'file' on the search path used for source
511 files. Put the full location in *FULL_PATHP. */
512 fd = openp (source_path, search_flags,
513 file, O_RDONLY, full_pathp);
517 int save_errno = errno;
518 do_cleanups (old_cleanups);
523 do_cleanups (old_cleanups);
525 *streamp = fdopen (fd, FOPEN_RT);
526 if (*streamp == NULL)
528 int save_errno = errno;
540 /* Load script FILE, which has already been opened as STREAM. */
543 source_script_from_stream (FILE *stream, const char *file)
545 if (script_ext_mode != script_ext_off)
547 const struct extension_language_defn *extlang
548 = get_ext_lang_of_file (file);
552 if (ext_lang_present_p (extlang))
554 script_sourcer_func *sourcer
555 = ext_lang_script_sourcer (extlang);
557 gdb_assert (sourcer != NULL);
558 sourcer (extlang, stream, file);
561 else if (script_ext_mode == script_ext_soft)
563 /* Assume the file is a gdb script.
564 This is handled below. */
567 throw_ext_lang_unsupported (extlang);
571 script_from_file (stream, file);
574 /* Worker to perform the "source" command.
576 If SEARCH_PATH is non-zero, and the file isn't found in cwd,
577 search for it in the source search path. */
580 source_script_with_search (const char *file, int from_tty, int search_path)
584 struct cleanup *old_cleanups;
586 if (file == NULL || *file == 0)
587 error (_("source command requires file name of file to source."));
589 if (!find_and_open_script (file, search_path, &stream, &full_path))
591 /* The script wasn't found, or was otherwise inaccessible.
592 If the source command was invoked interactively, throw an
593 error. Otherwise (e.g. if it was invoked by a script),
594 just emit a warning, rather than cause an error. */
596 perror_with_name (file);
599 perror_warning_with_name (file);
604 old_cleanups = make_cleanup (xfree, full_path);
605 make_cleanup_fclose (stream);
606 /* The python support reopens the file, so we need to pass full_path here
607 in case the file was found on the search path. It's useful to do this
608 anyway so that error messages show the actual file used. But only do
609 this if we (may have) used search_path, as printing the full path in
610 errors for the non-search case can be more noise than signal. */
611 source_script_from_stream (stream, search_path ? full_path : file);
612 do_cleanups (old_cleanups);
615 /* Wrapper around source_script_with_search to export it to main.c
616 for use in loading .gdbinit scripts. */
619 source_script (const char *file, int from_tty)
621 source_script_with_search (file, from_tty, 0);
624 /* Return the source_verbose global variable to its previous state
625 on exit from the source command, by whatever means. */
627 source_verbose_cleanup (void *old_value)
629 source_verbose = *(int *)old_value;
634 source_command (char *args, int from_tty)
636 struct cleanup *old_cleanups;
638 int *old_source_verbose = xmalloc (sizeof(int));
641 *old_source_verbose = source_verbose;
642 old_cleanups = make_cleanup (source_verbose_cleanup,
645 /* -v causes the source command to run in verbose mode.
646 -s causes the file to be searched in the source search path,
647 even if the file name contains a '/'.
648 We still have to be able to handle filenames with spaces in a
649 backward compatible way, so buildargv is not appropriate. */
653 while (args[0] != '\0')
655 /* Make sure leading white space does not break the
657 args = skip_spaces (args);
662 if (args[1] == 'v' && isspace (args[2]))
666 /* Skip passed -v. */
669 else if (args[1] == 's' && isspace (args[2]))
673 /* Skip passed -s. */
680 file = skip_spaces (args);
683 source_script_with_search (file, from_tty, search_path);
685 do_cleanups (old_cleanups);
690 echo_command (char *text, int from_tty)
692 const char *p = text;
696 while ((c = *p++) != '\0')
700 /* \ at end of argument is used after spaces
701 so they won't be lost. */
705 c = parse_escape (get_current_arch (), &p);
707 printf_filtered ("%c", c);
710 printf_filtered ("%c", c);
713 /* Force this output to appear now. */
715 gdb_flush (gdb_stdout);
719 shell_escape (char *arg, int from_tty)
721 #if defined(CANT_FORK) || \
722 (!defined(HAVE_WORKING_VFORK) && !defined(HAVE_WORKING_FORK))
723 /* If ARG is NULL, they want an inferior shell, but `system' just
724 reports if the shell is available when passed a NULL arg. */
725 int rc = system (arg ? arg : "");
728 arg = "inferior shell";
732 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg,
733 safe_strerror (errno));
734 gdb_flush (gdb_stderr);
738 fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc);
739 gdb_flush (gdb_stderr);
742 /* Make sure to return to the directory GDB thinks it is, in case
743 the shell command we just ran changed it. */
744 chdir (current_directory);
746 #else /* Can fork. */
749 if ((pid = vfork ()) == 0)
751 const char *p, *user_shell;
755 if ((user_shell = (char *) getenv ("SHELL")) == NULL)
756 user_shell = "/bin/sh";
758 /* Get the name of the shell for arg0. */
759 p = lbasename (user_shell);
762 execl (user_shell, p, (char *) 0);
764 execl (user_shell, p, "-c", arg, (char *) 0);
766 fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell,
767 safe_strerror (errno));
768 gdb_flush (gdb_stderr);
773 waitpid (pid, &status, 0);
775 error (_("Fork failed"));
776 #endif /* Can fork. */
780 edit_command (char *arg, int from_tty)
782 struct symtabs_and_lines sals;
783 struct symtab_and_line sal;
790 /* Pull in the current default source line if necessary. */
793 set_default_source_symtab_and_line ();
794 sal = get_current_source_symtab_and_line ();
797 /* Bare "edit" edits file with present line. */
802 error (_("No default source file yet."));
803 sal.line += get_lines_to_list () / 2;
807 /* Now should only be one argument -- decode it in SAL. */
810 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
820 ambiguous_line_spec (&sals);
829 error (_("Junk at end of line specification."));
831 /* If line was specified by address, first print exactly which
832 line, and which file. In this case, sal.symtab == 0 means
833 address is outside of all known source files, not that user
834 failed to give a filename. */
837 struct gdbarch *gdbarch;
840 error (_("No source file for address %s."),
841 paddress (get_current_arch (), sal.pc));
843 gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));
844 sym = find_pc_function (sal.pc);
846 printf_filtered ("%s is in %s (%s:%d).\n",
847 paddress (gdbarch, sal.pc),
848 SYMBOL_PRINT_NAME (sym),
849 symtab_to_filename_for_display (sal.symtab),
852 printf_filtered ("%s is at %s:%d.\n",
853 paddress (gdbarch, sal.pc),
854 symtab_to_filename_for_display (sal.symtab),
858 /* If what was given does not imply a symtab, it must be an
859 undebuggable symbol which means no source code. */
862 error (_("No line number known for %s."), arg);
865 if ((editor = (char *) getenv ("EDITOR")) == NULL)
868 fn = symtab_to_fullname (sal.symtab);
870 /* Quote the file name, in case it has whitespace or other special
872 p = xstrprintf ("%s +%d \"%s\"", editor, sal.line, fn);
873 shell_escape (p, from_tty);
878 list_command (char *arg, int from_tty)
880 struct symtabs_and_lines sals, sals_end;
881 struct symtab_and_line sal = { 0 };
882 struct symtab_and_line sal_end = { 0 };
883 struct symtab_and_line cursal = { 0 };
892 /* Pull in the current default source line if necessary. */
893 if (arg == 0 || arg[0] == '+' || arg[0] == '-')
895 set_default_source_symtab_and_line ();
896 cursal = get_current_source_symtab_and_line ();
898 /* If this is the first "list" since we've set the current
899 source line, center the listing around that line. */
900 if (get_first_line_listed () == 0)
904 first = max (cursal.line - get_lines_to_list () / 2, 1);
906 /* A small special case --- if listing backwards, and we
907 should list only one line, list the preceding line,
908 instead of the exact line we've just shown after e.g.,
909 stopping for a breakpoint. */
910 if (arg != NULL && arg[0] == '-'
911 && get_lines_to_list () == 1 && first > 1)
914 print_source_lines (cursal.symtab, first,
915 first + get_lines_to_list (), 0);
920 /* "l" or "l +" lists next ten lines. */
922 if (arg == 0 || strcmp (arg, "+") == 0)
924 print_source_lines (cursal.symtab, cursal.line,
925 cursal.line + get_lines_to_list (), 0);
929 /* "l -" lists previous ten lines, the ones before the ten just
931 if (strcmp (arg, "-") == 0)
933 print_source_lines (cursal.symtab,
934 max (get_first_line_listed ()
935 - get_lines_to_list (), 1),
936 get_first_line_listed (), 0);
940 /* Now if there is only one argument, decode it in SAL
942 If there are two arguments, decode them in SAL and SAL_END
943 and clear NO_END; however, if one of the arguments is blank,
944 set DUMMY_BEG or DUMMY_END to record that fact. */
946 if (!have_full_symbols () && !have_partial_symbols ())
947 error (_("No symbol table is loaded. Use the \"file\" command."));
954 sals = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
961 ambiguous_line_spec (&sals);
970 /* Record whether the BEG arg is all digits. */
972 for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
973 linenum_beg = (p == arg1);
975 while (*arg1 == ' ' || *arg1 == '\t')
981 while (*arg1 == ' ' || *arg1 == '\t')
988 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE, 0, 0);
990 sals_end = decode_line_1 (&arg1, DECODE_LINE_LIST_MODE,
991 sal.symtab, sal.line);
992 filter_sals (&sals_end);
993 if (sals_end.nelts == 0)
995 if (sals_end.nelts > 1)
997 ambiguous_line_spec (&sals_end);
998 xfree (sals_end.sals);
1001 sal_end = sals_end.sals[0];
1002 xfree (sals_end.sals);
1007 error (_("Junk at end of line specification."));
1009 if (!no_end && !dummy_beg && !dummy_end
1010 && sal.symtab != sal_end.symtab)
1011 error (_("Specified start and end are in different files."));
1012 if (dummy_beg && dummy_end)
1013 error (_("Two empty args do not say what lines to list."));
1015 /* If line was specified by address,
1016 first print exactly which line, and which file.
1018 In this case, sal.symtab == 0 means address is outside of all
1019 known source files, not that user failed to give a filename. */
1022 struct gdbarch *gdbarch;
1024 if (sal.symtab == 0)
1025 error (_("No source file for address %s."),
1026 paddress (get_current_arch (), sal.pc));
1028 gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));
1029 sym = find_pc_function (sal.pc);
1031 printf_filtered ("%s is in %s (%s:%d).\n",
1032 paddress (gdbarch, sal.pc),
1033 SYMBOL_PRINT_NAME (sym),
1034 symtab_to_filename_for_display (sal.symtab), sal.line);
1036 printf_filtered ("%s is at %s:%d.\n",
1037 paddress (gdbarch, sal.pc),
1038 symtab_to_filename_for_display (sal.symtab), sal.line);
1041 /* If line was not specified by just a line number, and it does not
1042 imply a symtab, it must be an undebuggable symbol which means no
1045 if (!linenum_beg && sal.symtab == 0)
1046 error (_("No line number known for %s."), arg);
1048 /* If this command is repeated with RET,
1049 turn it into the no-arg variant. */
1054 if (dummy_beg && sal_end.symtab == 0)
1055 error (_("No default source file yet. Do \"help list\"."));
1057 print_source_lines (sal_end.symtab,
1058 max (sal_end.line - (get_lines_to_list () - 1), 1),
1059 sal_end.line + 1, 0);
1060 else if (sal.symtab == 0)
1061 error (_("No default source file yet. Do \"help list\"."));
1064 int first_line = sal.line - get_lines_to_list () / 2;
1066 if (first_line < 1) first_line = 1;
1068 print_source_lines (sal.symtab,
1070 first_line + get_lines_to_list (),
1074 print_source_lines (sal.symtab, sal.line,
1076 ? sal.line + get_lines_to_list ()
1077 : sal_end.line + 1),
1081 /* Subroutine of disassemble_command to simplify it.
1082 Perform the disassembly.
1083 NAME is the name of the function if known, or NULL.
1084 [LOW,HIGH) are the range of addresses to disassemble.
1085 MIXED is non-zero to print source with the assembler. */
1088 print_disassembly (struct gdbarch *gdbarch, const char *name,
1089 CORE_ADDR low, CORE_ADDR high, int flags)
1092 if (!tui_is_window_visible (DISASSEM_WIN))
1095 printf_filtered ("Dump of assembler code ");
1097 printf_filtered ("for function %s:\n", name);
1099 printf_filtered ("from %s to %s:\n",
1100 paddress (gdbarch, low), paddress (gdbarch, high));
1102 /* Dump the specified range. */
1103 gdb_disassembly (gdbarch, current_uiout, 0, flags, -1, low, high);
1105 printf_filtered ("End of assembler dump.\n");
1106 gdb_flush (gdb_stdout);
1111 tui_show_assembly (gdbarch, low);
1116 /* Subroutine of disassemble_command to simplify it.
1117 Print a disassembly of the current function according to FLAGS. */
1120 disassemble_current_function (int flags)
1122 struct frame_info *frame;
1123 struct gdbarch *gdbarch;
1124 CORE_ADDR low, high, pc;
1127 frame = get_selected_frame (_("No frame selected."));
1128 gdbarch = get_frame_arch (frame);
1129 pc = get_frame_address_in_block (frame);
1130 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
1131 error (_("No function contains program counter for selected frame."));
1133 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1136 /* FIXME: cagney/2004-02-07: This should be an observer. */
1137 low = tui_get_low_disassembly_address (gdbarch, low, pc);
1139 low += gdbarch_deprecated_function_start_offset (gdbarch);
1141 print_disassembly (gdbarch, name, low, high, flags);
1144 /* Dump a specified section of assembly code.
1148 - dump the assembly code for the function of the current pc
1149 disassemble [/mr] addr
1150 - dump the assembly code for the function at ADDR
1151 disassemble [/mr] low,high
1152 disassemble [/mr] low,+length
1153 - dump the assembly code in the range [LOW,HIGH), or [LOW,LOW+length)
1155 A /m modifier will include source code with the assembly.
1156 A /r modifier will include raw instructions in hex with the assembly. */
1159 disassemble_command (char *arg, int from_tty)
1161 struct gdbarch *gdbarch = get_current_arch ();
1162 CORE_ADDR low, high;
1177 error (_("Missing modifier."));
1179 while (*p && ! isspace (*p))
1184 flags |= DISASSEMBLY_SOURCE;
1187 flags |= DISASSEMBLY_RAW_INSN;
1190 error (_("Invalid disassembly modifier."));
1194 p = skip_spaces_const (p);
1199 flags |= DISASSEMBLY_OMIT_FNAME;
1200 disassemble_current_function (flags);
1204 pc = value_as_address (parse_to_comma_and_eval (&p));
1210 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
1211 error (_("No function contains specified address."));
1213 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1216 /* FIXME: cagney/2004-02-07: This should be an observer. */
1217 low = tui_get_low_disassembly_address (gdbarch, low, pc);
1219 low += gdbarch_deprecated_function_start_offset (gdbarch);
1220 flags |= DISASSEMBLY_OMIT_FNAME;
1224 /* Two arguments. */
1227 p = skip_spaces_const (p);
1233 high = parse_and_eval_address (p);
1238 print_disassembly (gdbarch, name, low, high, flags);
1242 make_command (char *arg, int from_tty)
1250 p = xmalloc (sizeof ("make ") + strlen (arg));
1251 strcpy (p, "make ");
1252 strcpy (p + sizeof ("make ") - 1, arg);
1255 shell_escape (p, from_tty);
1259 show_user (char *args, int from_tty)
1261 struct cmd_list_element *c;
1262 extern struct cmd_list_element *cmdlist;
1266 const char *comname = args;
1268 c = lookup_cmd (&comname, cmdlist, "", 0, 1);
1269 if (!cli_user_command_p (c))
1270 error (_("Not a user command."));
1271 show_user_1 (c, "", args, gdb_stdout);
1275 for (c = cmdlist; c; c = c->next)
1277 if (cli_user_command_p (c) || c->prefixlist != NULL)
1278 show_user_1 (c, "", c->name, gdb_stdout);
1283 /* Search through names of commands and documentations for a certain
1284 regular expression. */
1287 apropos_command (char *searchstr, int from_tty)
1292 if (searchstr == NULL)
1293 error (_("REGEXP string is empty"));
1295 code = regcomp (&pattern, searchstr, REG_ICASE);
1298 struct cleanup *cleanups;
1300 cleanups = make_regfree_cleanup (&pattern);
1301 apropos_cmd (gdb_stdout, cmdlist, &pattern, "");
1302 do_cleanups (cleanups);
1306 char *err = get_regcomp_error (code, &pattern);
1308 make_cleanup (xfree, err);
1309 error (_("Error in regular expression: %s"), err);
1313 /* Subroutine of alias_command to simplify it.
1314 Return the first N elements of ARGV flattened back to a string
1315 with a space separating each element.
1316 ARGV may not be NULL.
1317 This does not take care of quoting elements in case they contain spaces
1321 argv_to_dyn_string (char **argv, int n)
1324 dyn_string_t result = dyn_string_new (10);
1326 gdb_assert (argv != NULL);
1327 gdb_assert (n >= 0 && n <= countargv (argv));
1329 for (i = 0; i < n; ++i)
1332 dyn_string_append_char (result, ' ');
1333 dyn_string_append_cstr (result, argv[i]);
1339 /* Subroutine of alias_command to simplify it.
1340 Return TRUE if COMMAND exists, unambiguously. Otherwise FALSE. */
1343 valid_command_p (const char *command)
1345 struct cmd_list_element *c;
1347 c = lookup_cmd_1 (& command, cmdlist, NULL, 1);
1349 if (c == NULL || c == (struct cmd_list_element *) -1)
1352 /* This is the slightly tricky part.
1353 lookup_cmd_1 will return a pointer to the last part of COMMAND
1354 to match, leaving COMMAND pointing at the remainder. */
1355 while (*command == ' ' || *command == '\t')
1357 return *command == '\0';
1360 /* Make an alias of an existing command. */
1363 alias_command (char *args, int from_tty)
1365 int i, alias_argc, command_argc;
1366 int abbrev_flag = 0;
1367 char *args2, *equals, *alias, *command;
1368 char **alias_argv, **command_argv;
1369 dyn_string_t alias_dyn_string, command_dyn_string;
1370 struct cleanup *cleanup;
1371 static const char usage[] = N_("Usage: alias [-a] [--] ALIAS = COMMAND");
1373 if (args == NULL || strchr (args, '=') == NULL)
1376 args2 = xstrdup (args);
1377 cleanup = make_cleanup (xfree, args2);
1378 equals = strchr (args2, '=');
1380 alias_argv = gdb_buildargv (args2);
1381 make_cleanup_freeargv (alias_argv);
1382 command_argv = gdb_buildargv (equals + 1);
1383 make_cleanup_freeargv (command_argv);
1385 for (i = 0; alias_argv[i] != NULL; )
1387 if (strcmp (alias_argv[i], "-a") == 0)
1392 else if (strcmp (alias_argv[i], "--") == 0)
1401 if (alias_argv[0] == NULL || command_argv[0] == NULL
1402 || *alias_argv[0] == '\0' || *command_argv[0] == '\0')
1405 for (i = 0; alias_argv[i] != NULL; ++i)
1407 if (! valid_user_defined_cmd_name_p (alias_argv[i]))
1410 error (_("Invalid command name: %s"), alias_argv[i]);
1412 error (_("Invalid command element name: %s"), alias_argv[i]);
1416 alias_argc = countargv (alias_argv);
1417 command_argc = countargv (command_argv);
1419 /* COMMAND must exist.
1420 Reconstruct the command to remove any extraneous spaces,
1421 for better error messages. */
1422 command_dyn_string = argv_to_dyn_string (command_argv, command_argc);
1423 make_cleanup_dyn_string_delete (command_dyn_string);
1424 command = dyn_string_buf (command_dyn_string);
1425 if (! valid_command_p (command))
1426 error (_("Invalid command to alias to: %s"), command);
1428 /* ALIAS must not exist. */
1429 alias_dyn_string = argv_to_dyn_string (alias_argv, alias_argc);
1430 make_cleanup_dyn_string_delete (alias_dyn_string);
1431 alias = dyn_string_buf (alias_dyn_string);
1432 if (valid_command_p (alias))
1433 error (_("Alias already exists: %s"), alias);
1435 /* If ALIAS is one word, it is an alias for the entire COMMAND.
1436 Example: alias spe = set print elements
1438 Otherwise ALIAS and COMMAND must have the same number of words,
1439 and every word except the last must match; and the last word of
1440 ALIAS is made an alias of the last word of COMMAND.
1441 Example: alias set print elms = set pr elem
1442 Note that unambiguous abbreviations are allowed. */
1444 if (alias_argc == 1)
1446 /* add_cmd requires *we* allocate space for name, hence the xstrdup. */
1447 add_com_alias (xstrdup (alias_argv[0]), command, class_alias,
1452 dyn_string_t alias_prefix_dyn_string, command_prefix_dyn_string;
1453 const char *alias_prefix, *command_prefix;
1454 struct cmd_list_element *c_alias, *c_command;
1456 if (alias_argc != command_argc)
1457 error (_("Mismatched command length between ALIAS and COMMAND."));
1459 /* Create copies of ALIAS and COMMAND without the last word,
1460 and use that to verify the leading elements match. */
1461 alias_prefix_dyn_string =
1462 argv_to_dyn_string (alias_argv, alias_argc - 1);
1463 make_cleanup_dyn_string_delete (alias_prefix_dyn_string);
1464 command_prefix_dyn_string =
1465 argv_to_dyn_string (alias_argv, command_argc - 1);
1466 make_cleanup_dyn_string_delete (command_prefix_dyn_string);
1467 alias_prefix = dyn_string_buf (alias_prefix_dyn_string);
1468 command_prefix = dyn_string_buf (command_prefix_dyn_string);
1470 c_command = lookup_cmd_1 (& command_prefix, cmdlist, NULL, 1);
1471 /* We've already tried to look up COMMAND. */
1472 gdb_assert (c_command != NULL
1473 && c_command != (struct cmd_list_element *) -1);
1474 gdb_assert (c_command->prefixlist != NULL);
1475 c_alias = lookup_cmd_1 (& alias_prefix, cmdlist, NULL, 1);
1476 if (c_alias != c_command)
1477 error (_("ALIAS and COMMAND prefixes do not match."));
1479 /* add_cmd requires *we* allocate space for name, hence the xstrdup. */
1480 add_alias_cmd (xstrdup (alias_argv[alias_argc - 1]),
1481 command_argv[command_argc - 1],
1482 class_alias, abbrev_flag, c_command->prefixlist);
1485 do_cleanups (cleanup);
1488 /* Print a list of files and line numbers which a user may choose from
1489 in order to list a function which was specified ambiguously (as
1490 with `list classname::overloadedfuncname', for example). The
1491 vector in SALS provides the filenames and line numbers. */
1494 ambiguous_line_spec (struct symtabs_and_lines *sals)
1498 for (i = 0; i < sals->nelts; ++i)
1499 printf_filtered (_("file: \"%s\", line number: %d\n"),
1500 symtab_to_filename_for_display (sals->sals[i].symtab),
1501 sals->sals[i].line);
1504 /* Sort function for filter_sals. */
1507 compare_symtabs (const void *a, const void *b)
1509 const struct symtab_and_line *sala = a;
1510 const struct symtab_and_line *salb = b;
1511 const char *dira = SYMTAB_DIRNAME (sala->symtab);
1512 const char *dirb = SYMTAB_DIRNAME (salb->symtab);
1520 else if (dirb == NULL)
1527 r = filename_cmp (dira, dirb);
1532 r = filename_cmp (sala->symtab->filename, salb->symtab->filename);
1536 if (sala->line < salb->line)
1538 return sala->line == salb->line ? 0 : 1;
1541 /* Remove any SALs that do not match the current program space, or
1542 which appear to be "file:line" duplicates. */
1545 filter_sals (struct symtabs_and_lines *sals)
1550 for (i = 0; i < sals->nelts; ++i)
1552 if (sals->sals[i].pspace == current_program_space
1553 && sals->sals[i].symtab != NULL)
1555 sals->sals[out] = sals->sals[i];
1561 qsort (sals->sals, sals->nelts, sizeof (struct symtab_and_line),
1566 for (i = 1; i < sals->nelts; ++i)
1568 if (compare_symtabs (&sals->sals[prev], &sals->sals[i]))
1570 /* Symtabs differ. */
1571 sals->sals[out] = sals->sals[i];
1577 if (sals->nelts == 0)
1587 set_debug (char *arg, int from_tty)
1589 printf_unfiltered (_("\"set debug\" must be followed by "
1590 "the name of a debug subcommand.\n"));
1591 help_list (setdebuglist, "set debug ", all_commands, gdb_stdout);
1595 show_debug (char *args, int from_tty)
1597 cmd_show_list (showdebuglist, from_tty, "");
1601 init_cmd_lists (void)
1603 max_user_call_depth = 1024;
1607 show_info_verbose (struct ui_file *file, int from_tty,
1608 struct cmd_list_element *c,
1612 fprintf_filtered (file,
1613 _("Verbose printing of informational messages is %s.\n"),
1616 fprintf_filtered (file, _("Verbosity is %s.\n"), value);
1620 show_history_expansion_p (struct ui_file *file, int from_tty,
1621 struct cmd_list_element *c, const char *value)
1623 fprintf_filtered (file, _("History expansion on command input is %s.\n"),
1628 show_remote_debug (struct ui_file *file, int from_tty,
1629 struct cmd_list_element *c, const char *value)
1631 fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"),
1636 show_remote_timeout (struct ui_file *file, int from_tty,
1637 struct cmd_list_element *c, const char *value)
1639 fprintf_filtered (file,
1640 _("Timeout limit to wait for target to respond is %s.\n"),
1645 show_max_user_call_depth (struct ui_file *file, int from_tty,
1646 struct cmd_list_element *c, const char *value)
1648 fprintf_filtered (file,
1649 _("The max call depth for user-defined commands is %s.\n"),
1655 initialize_file_ftype _initialize_cli_cmds;
1658 _initialize_cli_cmds (void)
1660 struct cmd_list_element *c;
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."));
1717 add_setshow_enum_cmd ("script-extension", class_support,
1718 script_ext_enums, &script_ext_mode, _("\
1719 Set mode for script filename extension recognition."), _("\
1720 Show mode for script filename extension recognition."), _("\
1721 off == no filename extension recognition (all sourced files are GDB scripts)\n\
1722 soft == evaluate script according to filename extension, fallback to GDB script"
1724 strict == evaluate script according to filename extension, error if not supported"
1727 show_script_ext_mode,
1728 &setlist, &showlist);
1730 add_com ("quit", class_support, quit_command, _("\
1732 Usage: quit [EXPR]\n\
1733 The optional expression EXPR, if present, is evaluated and the result\n\
1734 used as GDB's exit code. The default is zero."));
1735 c = add_com ("help", class_support, help_command,
1736 _("Print list of commands."));
1737 set_cmd_completer (c, command_completer);
1738 add_com_alias ("q", "quit", class_support, 1);
1739 add_com_alias ("h", "help", class_support, 1);
1741 add_setshow_boolean_cmd ("verbose", class_support, &info_verbose, _("\
1742 Set verbosity."), _("\
1743 Show verbosity."), NULL,
1746 &setlist, &showlist);
1748 add_prefix_cmd ("history", class_support, set_history,
1749 _("Generic command for setting command history parameters."),
1750 &sethistlist, "set history ", 0, &setlist);
1751 add_prefix_cmd ("history", class_support, show_history,
1752 _("Generic command for showing command history parameters."),
1753 &showhistlist, "show history ", 0, &showlist);
1755 add_setshow_boolean_cmd ("expansion", no_class, &history_expansion_p, _("\
1756 Set history expansion on command input."), _("\
1757 Show history expansion on command input."), _("\
1758 Without an argument, history expansion is enabled."),
1760 show_history_expansion_p,
1761 &sethistlist, &showhistlist);
1763 add_prefix_cmd ("info", class_info, info_command, _("\
1764 Generic command for showing things about the program being debugged."),
1765 &infolist, "info ", 0, &cmdlist);
1766 add_com_alias ("i", "info", class_info, 1);
1767 add_com_alias ("inf", "info", class_info, 1);
1769 add_com ("complete", class_obscure, complete_command,
1770 _("List the completions for the rest of the line as a command."));
1772 add_prefix_cmd ("show", class_info, show_command, _("\
1773 Generic command for showing things about the debugger."),
1774 &showlist, "show ", 0, &cmdlist);
1775 /* Another way to get at the same thing. */
1776 add_info ("set", show_command, _("Show all GDB settings."));
1778 add_cmd ("commands", no_set_class, show_commands, _("\
1779 Show the history of commands you typed.\n\
1780 You can supply a command number to start with, or a `+' to start after\n\
1781 the previous command number shown."),
1784 add_cmd ("version", no_set_class, show_version,
1785 _("Show what version of GDB this is."), &showlist);
1787 add_cmd ("configuration", no_set_class, show_configuration,
1788 _("Show how GDB was configured at build time."), &showlist);
1790 add_setshow_zinteger_cmd ("remote", no_class, &remote_debug, _("\
1791 Set debugging of remote protocol."), _("\
1792 Show debugging of remote protocol."), _("\
1793 When enabled, each packet sent or received with the remote target\n\
1797 &setdebuglist, &showdebuglist);
1799 add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class,
1800 &remote_timeout, _("\
1801 Set timeout limit to wait for target to respond."), _("\
1802 Show timeout limit to wait for target to respond."), _("\
1803 This value is used to set the time limit for gdb to wait for a response\n\
1806 show_remote_timeout,
1807 &setlist, &showlist);
1809 add_prefix_cmd ("debug", no_class, set_debug,
1810 _("Generic command for setting gdb debugging flags"),
1811 &setdebuglist, "set debug ", 0, &setlist);
1813 add_prefix_cmd ("debug", no_class, show_debug,
1814 _("Generic command for showing gdb debugging flags"),
1815 &showdebuglist, "show debug ", 0, &showlist);
1817 c = add_com ("shell", class_support, shell_escape, _("\
1818 Execute the rest of the line as a shell command.\n\
1819 With no arguments, run an inferior shell."));
1820 set_cmd_completer (c, filename_completer);
1822 c = add_com ("edit", class_files, edit_command, _("\
1823 Edit specified file or function.\n\
1824 With no argument, edits file containing most recent line listed.\n\
1825 Editing targets can be specified in these ways:\n\
1826 FILE:LINENUM, to edit at that line in that file,\n\
1827 FUNCTION, to edit at the beginning of that function,\n\
1828 FILE:FUNCTION, to distinguish among like-named static functions.\n\
1829 *ADDRESS, to edit at the line containing that address.\n\
1830 Uses EDITOR environment variable contents as editor (or ex as default)."));
1832 c->completer = location_completer;
1834 add_com ("list", class_files, list_command, _("\
1835 List specified function or line.\n\
1836 With no argument, lists ten more lines after or around previous listing.\n\
1837 \"list -\" lists the ten lines before a previous ten-line listing.\n\
1838 One argument specifies a line, and ten lines are listed around that line.\n\
1839 Two arguments with comma between specify starting and ending lines to list.\n\
1840 Lines can be specified in these ways:\n\
1841 LINENUM, to list around that line in current file,\n\
1842 FILE:LINENUM, to list around that line in that file,\n\
1843 FUNCTION, to list around beginning of that function,\n\
1844 FILE:FUNCTION, to distinguish among like-named static functions.\n\
1845 *ADDRESS, to list around the line containing that address.\n\
1846 With two args if one is empty it stands for ten lines away from \
1849 add_com_alias ("l", "list", class_files, 1);
1852 add_com_alias ("file", "list", class_files, 1);
1854 c = add_com ("disassemble", class_vars, disassemble_command, _("\
1855 Disassemble a specified section of memory.\n\
1856 Default is the function surrounding the pc of the selected frame.\n\
1857 With a /m modifier, source lines are included (if available).\n\
1858 With a /r modifier, raw instructions in hex are included.\n\
1859 With a single argument, the function surrounding that address is dumped.\n\
1860 Two arguments (separated by a comma) are taken as a range of memory to dump,\n\
1861 in the form of \"start,end\", or \"start,+length\".\n\
1863 Note that the address is interpreted as an expression, not as a location\n\
1864 like in the \"break\" command.\n\
1865 So, for example, if you want to disassemble function bar in file foo.c\n\
1866 you must type \"disassemble 'foo.c'::bar\" and not \"disassemble foo.c:bar\"."));
1867 set_cmd_completer (c, location_completer);
1869 add_com_alias ("!", "shell", class_support, 0);
1871 c = add_com ("make", class_support, make_command, _("\
1872 Run the ``make'' program using the rest of the line as arguments."));
1873 set_cmd_completer (c, filename_completer);
1874 add_cmd ("user", no_class, show_user, _("\
1875 Show definitions of non-python/scheme user defined commands.\n\
1876 Argument is the name of the user defined command.\n\
1877 With no argument, show definitions of all user defined commands."), &showlist);
1878 add_com ("apropos", class_support, apropos_command,
1879 _("Search for commands matching a REGEXP"));
1881 add_setshow_uinteger_cmd ("max-user-call-depth", no_class,
1882 &max_user_call_depth, _("\
1883 Set the max call depth for non-python/scheme user-defined commands."), _("\
1884 Show the max call depth for non-python/scheme user-defined commands."), NULL,
1886 show_max_user_call_depth,
1887 &setlist, &showlist);
1889 add_setshow_boolean_cmd ("trace-commands", no_class, &trace_commands, _("\
1890 Set tracing of GDB CLI commands."), _("\
1891 Show state of GDB CLI command tracing."), _("\
1892 When 'on', each command is displayed as it is executed."),
1895 &setlist, &showlist);
1897 c = add_com ("alias", class_support, alias_command, _("\
1898 Define a new command that is an alias of an existing command.\n\
1899 Usage: alias [-a] [--] ALIAS = COMMAND\n\
1900 ALIAS is the name of the alias command to create.\n\
1901 COMMAND is the command being aliased to.\n\
1902 If \"-a\" is specified, the command is an abbreviation,\n\
1903 and will not appear in help command list output.\n\
1906 Make \"spe\" an alias of \"set print elements\":\n\
1907 alias spe = set print elements\n\
1908 Make \"elms\" an alias of \"elements\" in the \"set print\" command:\n\
1909 alias -a set print elms = set print elements"));
1913 init_cli_cmds (void)
1915 struct cmd_list_element *c;
1916 char *source_help_text;
1918 source_help_text = xstrprintf (_("\
1919 Read commands from a file named FILE.\n\
1921 Usage: source [-s] [-v] FILE\n\
1922 -s: search for the script in the source search path,\n\
1923 even if FILE contains directories.\n\
1924 -v: each command in FILE is echoed as it is executed.\n\
1926 Note that the file \"%s\" is read automatically in this way\n\
1927 when GDB is started."), gdbinit);
1928 c = add_cmd ("source", class_support, source_command,
1929 source_help_text, &cmdlist);
1930 set_cmd_completer (c, filename_completer);