1 /* Top level `main' program for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
3 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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
23 #include "call-cmds.h"
28 #include "breakpoint.h"
30 #include "expression.h"
32 #include "terminal.h" /* For job_control. */
37 /* readline include files */
41 /* readline defines this. */
44 #include <sys/types.h>
46 /* What is this for? X_OK? */
55 #include <sys/param.h>
59 /* Prototypes for local functions */
62 symbol_completion_function
PARAMS ((char *, int));
65 command_loop
PARAMS ((void));
68 command_loop_marker
PARAMS ((int));
71 print_gdb_version
PARAMS ((GDB_FILE
*));
74 quit_command
PARAMS ((char *, int));
77 init_main
PARAMS ((void));
80 init_history
PARAMS ((void));
83 init_cmd_lists
PARAMS ((void));
86 float_handler
PARAMS ((int));
89 source_command
PARAMS ((char *, int));
91 static void cd_command
PARAMS ((char *, int));
94 print_gnu_advertisement
PARAMS ((void));
97 init_signals
PARAMS ((void));
100 read_command_file
PARAMS ((FILE *));
103 set_verbose
PARAMS ((char *, int, struct cmd_list_element
*));
106 show_history
PARAMS ((char *, int));
109 set_history
PARAMS ((char *, int));
112 set_history_size_command
PARAMS ((char *, int, struct cmd_list_element
*));
115 show_commands
PARAMS ((char *, int));
118 echo_command
PARAMS ((char *, int));
121 pwd_command
PARAMS ((char *, int));
124 show_version
PARAMS ((char *, int));
127 document_command
PARAMS ((char *, int));
130 define_command
PARAMS ((char *, int));
133 validate_comname
PARAMS ((char *));
136 help_command
PARAMS ((char *, int));
139 show_command
PARAMS ((char *, int));
142 info_command
PARAMS ((char *, int));
145 complete_command
PARAMS ((char *, int));
148 do_nothing
PARAMS ((int));
151 quit_cover
PARAMS ((char *));
154 disconnect
PARAMS ((int));
157 source_cleanup
PARAMS ((FILE *));
159 /* If this definition isn't overridden by the header files, assume
160 that isatty and fileno exist on this system. */
162 #define ISATTY(FP) (isatty (fileno (FP)))
165 /* Initialization file name for gdb. This is overridden in some configs. */
167 #ifndef GDBINIT_FILENAME
168 #define GDBINIT_FILENAME ".gdbinit"
170 static char gdbinit
[] = GDBINIT_FILENAME
;
171 static int inhibit_gdbinit
= 0;
173 #define ALL_CLEANUPS ((struct cleanup *)0)
175 /* Version number of GDB, as a string. */
177 extern char *version
;
179 /* Canonical host name as a string. */
181 extern char *host_name
;
183 /* Canonical target name as a string. */
185 extern char *target_name
;
187 extern char lang_frame_mismatch_warn
[]; /* language.c */
189 /* Flag for whether we want all the "from_tty" gubbish printed. */
191 int caution
= 1; /* Default is yes, sigh. */
194 * Define all cmd_list_element's
197 /* Chain containing all defined commands. */
199 struct cmd_list_element
*cmdlist
;
201 /* Chain containing all defined info subcommands. */
203 struct cmd_list_element
*infolist
;
205 /* Chain containing all defined enable subcommands. */
207 struct cmd_list_element
*enablelist
;
209 /* Chain containing all defined disable subcommands. */
211 struct cmd_list_element
*disablelist
;
213 /* Chain containing all defined delete subcommands. */
215 struct cmd_list_element
*deletelist
;
217 /* Chain containing all defined "enable breakpoint" subcommands. */
219 struct cmd_list_element
*enablebreaklist
;
221 /* Chain containing all defined set subcommands */
223 struct cmd_list_element
*setlist
;
225 /* Chain containing all defined unset subcommands */
227 struct cmd_list_element
*unsetlist
;
229 /* Chain containing all defined show subcommands. */
231 struct cmd_list_element
*showlist
;
233 /* Chain containing all defined \"set history\". */
235 struct cmd_list_element
*sethistlist
;
237 /* Chain containing all defined \"show history\". */
239 struct cmd_list_element
*showhistlist
;
241 /* Chain containing all defined \"unset history\". */
243 struct cmd_list_element
*unsethistlist
;
245 /* Chain containing all defined maintenance subcommands. */
248 struct cmd_list_element
*maintenancelist
;
251 /* Chain containing all defined "maintenance info" subcommands. */
254 struct cmd_list_element
*maintenanceinfolist
;
257 /* Chain containing all defined "maintenance print" subcommands. */
260 struct cmd_list_element
*maintenanceprintlist
;
263 struct cmd_list_element
*setprintlist
;
265 struct cmd_list_element
*showprintlist
;
267 struct cmd_list_element
*setchecklist
;
269 struct cmd_list_element
*showchecklist
;
271 /* stdio stream that command input is being read from. Set to stdin normally.
272 Set by source_command to the file we are sourcing. Set to NULL if we are
273 executing a user-defined command. */
277 /* Current working directory. */
279 char *current_directory
;
281 /* The directory name is actually stored here (usually). */
282 static char dirbuf
[1024];
284 /* Function to call before reading a command, if nonzero.
285 The function receives two args: an input stream,
286 and a prompt string. */
288 void (*window_hook
) PARAMS ((FILE *, char *));
290 extern int mapped_symbol_files
;
291 extern int readnow_symbol_files
;
296 /* gdb prints this when reading a command interactively */
299 /* Buffer used for reading command lines, and the size
300 allocated for it so far. */
305 /* Nonzero if the current command is modified by "server ". This
306 affects things like recording into the command history, comamnds
307 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
308 whatever) can issue its own commands and also send along commands
309 from the user, and have the user not notice that the user interface
310 is issuing commands too. */
313 /* Baud rate specified for talking to serial target systems. Default
314 is left as -1, so targets can choose their own defaults. */
315 /* FIXME: This means that "show remotebaud" and gr_files_info can print -1
316 or (unsigned int)-1. This is a Bad User Interface. */
320 /* Non-zero tells remote* modules to output debugging info. */
322 int remote_debug
= 0;
324 /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
328 #define STOP_SIGNAL SIGTSTP
329 static void stop_sig
PARAMS ((int));
333 /* Some System V have job control but not sigsetmask(). */
334 #if !defined (HAVE_SIGSETMASK)
336 #define HAVE_SIGSETMASK 1
338 #define HAVE_SIGSETMASK 0
342 #if 0 == (HAVE_SIGSETMASK)
343 #define sigsetmask(n)
346 /* Where to go for return_to_top_level (RETURN_ERROR). */
347 static jmp_buf error_return
;
348 /* Where to go for return_to_top_level (RETURN_QUIT). */
349 static jmp_buf quit_return
;
351 /* Temporary variable for SET_TOP_LEVEL. */
352 static int top_level_val
;
354 /* Do a setjmp on error_return and quit_return. catch_errors is
355 generally a cleaner way to do this, but main() would look pretty
356 ugly if it had to use catch_errors each time. */
358 #define SET_TOP_LEVEL() \
359 (((top_level_val = setjmp (error_return)) \
360 ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \
363 /* Return for reason REASON. This generally gets back to the command
364 loop, but can be caught via catch_errors. */
367 return_to_top_level (reason
)
368 enum return_reason reason
;
373 /* Perhaps it would be cleaner to do this via the cleanup chain (not sure
374 I can think of a reason why that is vital, though). */
375 bpstat_clear_actions(stop_bpstat
); /* Clear queued breakpoint commands */
377 disable_current_display ();
378 do_cleanups (ALL_CLEANUPS
);
380 if (annotation_level
> 1)
391 (NORETURN
void) longjmp
392 (reason
== RETURN_ERROR
? error_return
: quit_return
, 1);
395 /* Call FUNC with arg ARGS, catching any errors. If there is no
396 error, return the value returned by FUNC. If there is an error,
397 print ERRSTRING, print the specific error message, then return
400 Must not be called with immediate_quit in effect (bad things might
401 happen, say we got a signal in the middle of a memcpy to quit_return).
402 This is an OK restriction; with very few exceptions immediate_quit can
403 be replaced by judicious use of QUIT.
405 MASK specifies what to catch; it is normally set to
406 RETURN_MASK_ALL, if for no other reason than that the code which
407 calls catch_errors might not be set up to deal with a quit which
408 isn't caught. But if the code can deal with it, it generally
409 should be RETURN_MASK_ERROR, unless for some reason it is more
410 useful to abort only the portion of the operation inside the
411 catch_errors. Note that quit should return to the command line
412 fairly quickly, even if some further processing is being done. */
415 catch_errors (func
, args
, errstring
, mask
)
416 int (*func
) PARAMS ((char *));
425 struct cleanup
*saved_cleanup_chain
;
426 char *saved_error_pre_print
;
428 saved_cleanup_chain
= save_cleanups ();
429 saved_error_pre_print
= error_pre_print
;
431 if (mask
& RETURN_MASK_ERROR
)
432 memcpy ((char *)saved_error
, (char *)error_return
, sizeof (jmp_buf));
433 if (mask
& RETURN_MASK_QUIT
)
434 memcpy (saved_quit
, quit_return
, sizeof (jmp_buf));
435 error_pre_print
= errstring
;
437 if (setjmp (tmp_jmp
) == 0)
439 if (mask
& RETURN_MASK_ERROR
)
440 memcpy (error_return
, tmp_jmp
, sizeof (jmp_buf));
441 if (mask
& RETURN_MASK_QUIT
)
442 memcpy (quit_return
, tmp_jmp
, sizeof (jmp_buf));
443 val
= (*func
) (args
);
448 restore_cleanups (saved_cleanup_chain
);
450 error_pre_print
= saved_error_pre_print
;
451 if (mask
& RETURN_MASK_ERROR
)
452 memcpy (error_return
, saved_error
, sizeof (jmp_buf));
453 if (mask
& RETURN_MASK_QUIT
)
454 memcpy (quit_return
, saved_quit
, sizeof (jmp_buf));
458 /* Handler for SIGHUP. */
464 catch_errors (quit_cover
, NULL
,
465 "Could not kill the program being debugged", RETURN_MASK_ALL
);
466 signal (SIGHUP
, SIG_DFL
);
467 kill (getpid (), SIGHUP
);
470 /* Just a little helper function for disconnect(). */
476 caution
= 0; /* Throw caution to the wind -- we're exiting.
477 This prevents asking the user dumb questions. */
478 quit_command((char *)0, 0);
482 /* Line number we are currently in in a file which is being sourced. */
483 static int source_line_number
;
485 /* Name of the file we are sourcing. */
486 static char *source_file_name
;
488 /* Buffer containing the error_pre_print used by the source stuff.
490 static char *source_error
;
491 static int source_error_allocated
;
493 /* Something to glom on to the start of error_pre_print if source_file_name
495 static char *source_pre_error
;
497 /* Clean up on error during a "source" command (or execution of a
498 user-defined command). */
501 source_cleanup (stream
)
504 /* Restore the previous input stream. */
508 /* Read commands from STREAM. */
510 read_command_file (stream
)
513 struct cleanup
*cleanups
;
515 cleanups
= make_cleanup (source_cleanup
, instream
);
518 do_cleanups (cleanups
);
524 /* Run the init function of each source file */
526 init_cmd_lists (); /* This needs to be done first */
527 initialize_all_files ();
528 init_main (); /* But that omits this file! Do it now */
531 /* We need a default language for parsing expressions, so simple things like
532 "set width 0" won't fail if no language is explicitly set in a config file
533 or implicitly set by reading an executable during startup. */
534 set_language (language_c
);
535 expected_language
= current_language
; /* don't warn about the change. */
538 #ifndef MAIN_OVERRIDE
545 static int quiet
= 0;
546 static int batch
= 0;
548 /* Pointers to various arguments from command line. */
550 char *execarg
= NULL
;
551 char *corearg
= NULL
;
555 /* These are static so that we can take their address in an initializer. */
556 static int print_help
;
557 static int print_version
;
559 /* Pointers to all arguments of --command option. */
561 /* Allocated size of cmdarg. */
563 /* Number of elements of cmdarg used. */
566 /* Indices of all arguments of --directory option. */
568 /* Allocated size. */
570 /* Number of elements used. */
573 struct stat homebuf
, cwdbuf
;
574 char *homedir
, *homeinit
;
578 /* start-sanitize-mpw */
580 /* Drop into MacsBug, but only if the executable is specially named. */
581 if (strcmp(argv
[0], "DEBUGGDB") == 0)
582 DebugStr("\pat start of GDB main");
585 mac_app
= mac_init ();
587 /* end-sanitize-mpw */
588 /* This needs to happen before the first use of malloc. */
589 init_malloc ((PTR
) NULL
);
591 #if defined (ALIGN_STACK_ON_STARTUP)
592 i
= (int) &count
& 0x3;
597 /* If error() is called from initialization code, just exit */
598 if (SET_TOP_LEVEL ()) {
603 cmdarg
= (char **) xmalloc (cmdsize
* sizeof (*cmdarg
));
606 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
610 line
= (char *) xmalloc (linesize
);
611 line
[0] = '\0'; /* Terminate saved (now empty) cmd line */
614 getcwd (dirbuf
, sizeof (dirbuf
));
615 current_directory
= dirbuf
;
617 /* Parse arguments and options. */
620 /* When var field is 0, use flag field to record the equivalent
621 short option (or arbitrary numbers starting at 10 for those
622 with no equivalent). */
623 static struct option long_options
[] =
625 {"readnow", no_argument
, &readnow_symbol_files
, 1},
626 {"r", no_argument
, &readnow_symbol_files
, 1},
627 {"mapped", no_argument
, &mapped_symbol_files
, 1},
628 {"m", no_argument
, &mapped_symbol_files
, 1},
629 {"quiet", no_argument
, &quiet
, 1},
630 {"q", no_argument
, &quiet
, 1},
631 {"silent", no_argument
, &quiet
, 1},
632 {"nx", no_argument
, &inhibit_gdbinit
, 1},
633 {"n", no_argument
, &inhibit_gdbinit
, 1},
634 {"batch", no_argument
, &batch
, 1},
635 {"epoch", no_argument
, &epoch_interface
, 1},
637 /* This is a synonym for "--annotate=1". --annotate is now preferred,
638 but keep this here for a long time because people will be running
639 emacses which use --fullname. */
640 {"fullname", no_argument
, 0, 'f'},
641 {"f", no_argument
, 0, 'f'},
643 {"annotate", required_argument
, 0, 12},
644 {"help", no_argument
, &print_help
, 1},
645 {"se", required_argument
, 0, 10},
646 {"symbols", required_argument
, 0, 's'},
647 {"s", required_argument
, 0, 's'},
648 {"exec", required_argument
, 0, 'e'},
649 {"e", required_argument
, 0, 'e'},
650 {"core", required_argument
, 0, 'c'},
651 {"c", required_argument
, 0, 'c'},
652 {"command", required_argument
, 0, 'x'},
653 {"version", no_argument
, &print_version
, 1},
654 {"x", required_argument
, 0, 'x'},
655 {"directory", required_argument
, 0, 'd'},
656 {"cd", required_argument
, 0, 11},
657 {"tty", required_argument
, 0, 't'},
658 {"baud", required_argument
, 0, 'b'},
659 {"b", required_argument
, 0, 'b'},
660 /* Allow machine descriptions to add more options... */
661 #ifdef ADDITIONAL_OPTIONS
664 {0, no_argument
, 0, 0},
671 c
= getopt_long_only (argc
, argv
, "",
672 long_options
, &option_index
);
676 /* Long option that takes an argument. */
677 if (c
== 0 && long_options
[option_index
].flag
== 0)
678 c
= long_options
[option_index
].val
;
683 /* Long option that just sets a flag. */
693 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
694 annotation_level
= atoi (optarg
);
697 annotation_level
= 1;
709 cmdarg
[ncmd
++] = optarg
;
713 cmdarg
= (char **) xrealloc ((char *)cmdarg
,
714 cmdsize
* sizeof (*cmdarg
));
718 dirarg
[ndir
++] = optarg
;
722 dirarg
= (char **) xrealloc ((char *)dirarg
,
723 dirsize
* sizeof (*dirarg
));
737 i
= strtol (optarg
, &p
, 0);
738 if (i
== 0 && p
== optarg
)
740 /* Don't use *_filtered or warning() (which relies on
741 current_target) until after initialize_all_files(). */
745 "warning: could not set baud rate to `%s'.\n", optarg
);
751 #ifdef ADDITIONAL_OPTION_CASES
752 ADDITIONAL_OPTION_CASES
755 fprintf_unfiltered (gdb_stderr
,
756 "Use `%s --help' for a complete list of options.\n",
762 /* OK, that's all the options. The other arguments are filenames. */
764 for (; optind
< argc
; optind
++)
768 symarg
= argv
[optind
];
769 execarg
= argv
[optind
];
772 corearg
= argv
[optind
];
775 fprintf_unfiltered (gdb_stderr
,
776 "Excess command line arguments ignored. (%s%s)\n",
777 argv
[optind
], (optind
== argc
- 1) ? "" : " ...");
786 /* Do these (and anything which might call wrap_here or *_filtered)
787 after initialize_all_files. */
790 print_gdb_version (gdb_stdout
);
792 printf_filtered ("\n");
798 /* --version is intentionally not documented here, because we
799 are printing the version here, and the help is long enough
802 print_gdb_version (gdb_stdout
);
803 /* Make sure the output gets printed. */
805 printf_filtered ("\n");
807 /* But don't use *_filtered here. We don't want to prompt for continue
808 no matter how small the screen or how much we're going to print. */
809 /* start-sanitize-mpw */
810 /* For reasons too ugly to describe... */
812 fputs_unfiltered ("This is the GNU debugger.\n", gdb_stdout
);
814 /* end-sanitize-mpw */
816 This is the GNU debugger. Usage:\n\
817 gdb [options] [executable-file [core-file or process-id]]\n\
819 --help Print this message.\n\
820 --quiet Do not print version number on startup.\n\
821 --fullname Output information used by emacs-GDB interface.\n\
822 --epoch Output information used by epoch emacs-GDB interface.\n\
823 --batch Exit after processing options.\n\
824 --nx Do not read .gdbinit file.\n\
825 --tty=TTY Use TTY for input/output by the program being debugged.\n\
826 --cd=DIR Change current directory to DIR.\n\
827 --directory=DIR Search for source files in DIR.\n\
828 --command=FILE Execute GDB commands from FILE.\n\
829 --symbols=SYMFILE Read symbols from SYMFILE.\n\
830 --exec=EXECFILE Use EXECFILE as the executable.\n\
831 --se=FILE Use FILE as symbol file and executable file.\n\
832 --core=COREFILE Analyze the core dump COREFILE.\n\
833 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
834 --mapped Use mapped symbol files if supported on this system.\n\
835 --readnow Fully read symbol files on first access.\n\
837 /* start-sanitize-mpw */
839 /* end-sanitize-mpw */
840 #ifdef ADDITIONAL_OPTION_HELP
841 fputs_unfiltered (ADDITIONAL_OPTION_HELP
, gdb_stdout
);
843 fputs_unfiltered ("\n\
844 For more information, type \"help\" from within GDB, or consult the\n\
845 GDB manual (available as on-line info or a printed manual).\n", gdb_stdout
);
851 /* Print all the junk at the top, with trailing "..." if we are about
852 to read a symbol file (possibly slowly). */
853 print_gnu_advertisement ();
854 print_gdb_version (gdb_stdout
);
856 printf_filtered ("..");
858 gdb_flush (gdb_stdout
); /* Force to screen during slow operations */
861 error_pre_print
= "\n\n";
862 /* We may get more than one warning, don't double space all of them... */
863 warning_pre_print
= "\nwarning: ";
865 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
866 *before* all the command line arguments are processed; it sets
867 global parameters, which are independent of what file you are
868 debugging or what directory you are in. */
869 homedir
= getenv ("HOME");
872 homeinit
= (char *) alloca (strlen (getenv ("HOME")) +
873 strlen (gdbinit
) + 10);
874 strcpy (homeinit
, getenv ("HOME"));
875 strcat (homeinit
, "/");
876 strcat (homeinit
, gdbinit
);
877 if (!inhibit_gdbinit
&& access (homeinit
, R_OK
) == 0)
879 if (!SET_TOP_LEVEL ())
880 source_command (homeinit
, 0);
882 do_cleanups (ALL_CLEANUPS
);
884 /* Do stats; no need to do them elsewhere since we'll only
885 need them if homedir is set. Make sure that they are
886 zero in case one of them fails (this guarantees that they
887 won't match if either exists). */
889 memset (&homebuf
, 0, sizeof (struct stat
));
890 memset (&cwdbuf
, 0, sizeof (struct stat
));
892 stat (homeinit
, &homebuf
);
893 stat (gdbinit
, &cwdbuf
); /* We'll only need this if
897 /* Now perform all the actions indicated by the arguments. */
900 if (!SET_TOP_LEVEL ())
902 cd_command (cdarg
, 0);
905 do_cleanups (ALL_CLEANUPS
);
907 for (i
= 0; i
< ndir
; i
++)
908 if (!SET_TOP_LEVEL ())
909 directory_command (dirarg
[i
], 0);
911 do_cleanups (ALL_CLEANUPS
);
915 && STREQ (execarg
, symarg
))
917 /* The exec file and the symbol-file are the same. If we can't open
918 it, better only print one error message. */
919 if (!SET_TOP_LEVEL ())
921 exec_file_command (execarg
, !batch
);
922 symbol_file_command (symarg
, 0);
928 if (!SET_TOP_LEVEL ())
929 exec_file_command (execarg
, !batch
);
931 if (!SET_TOP_LEVEL ())
932 symbol_file_command (symarg
, 0);
934 do_cleanups (ALL_CLEANUPS
);
936 /* After the symbol file has been read, print a newline to get us
937 beyond the copyright line... But errors should still set off
938 the error message with a (single) blank line. */
940 printf_filtered ("\n");
941 error_pre_print
= "\n";
942 warning_pre_print
= "\nwarning: ";
945 if (!SET_TOP_LEVEL ())
946 core_file_command (corearg
, !batch
);
947 else if (isdigit (corearg
[0]) && !SET_TOP_LEVEL ())
948 attach_command (corearg
, !batch
);
949 do_cleanups (ALL_CLEANUPS
);
952 if (!SET_TOP_LEVEL ())
953 tty_command (ttyarg
, !batch
);
954 do_cleanups (ALL_CLEANUPS
);
956 #ifdef ADDITIONAL_OPTION_HANDLER
957 ADDITIONAL_OPTION_HANDLER
;
960 /* Error messages should no longer be distinguished with extra output. */
962 warning_pre_print
= "warning: ";
964 /* Read the .gdbinit file in the current directory, *if* it isn't
965 the same as the $HOME/.gdbinit file (it should exist, also). */
968 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
, sizeof (struct stat
)))
969 if (!inhibit_gdbinit
&& access (gdbinit
, R_OK
) == 0)
971 if (!SET_TOP_LEVEL ())
972 source_command (gdbinit
, 0);
974 do_cleanups (ALL_CLEANUPS
);
976 for (i
= 0; i
< ncmd
; i
++)
978 if (!SET_TOP_LEVEL ())
980 if (cmdarg
[i
][0] == '-' && cmdarg
[i
][1] == '\0')
981 read_command_file (stdin
);
983 source_command (cmdarg
[i
], !batch
);
984 do_cleanups (ALL_CLEANUPS
);
989 /* Read in the old history after all the command files have been read. */
994 /* We have hit the end of the batch file. */
998 /* Do any host- or target-specific hacks. This is used for i960 targets
999 to force the user to set a nindy target and spec its parameters. */
1001 #ifdef BEFORE_MAIN_LOOP_HOOK
1002 BEFORE_MAIN_LOOP_HOOK
;
1005 /* The command loop. */
1009 if (!SET_TOP_LEVEL ())
1011 do_cleanups (ALL_CLEANUPS
); /* Do complete cleanup */
1012 /* start-sanitize-mpw */
1014 /* If we're being a Mac application, go into a Mac-specific
1015 event-handling loop instead. We still want to be inside
1016 the outer loop, because that will catch longjmps resulting
1017 from some command executions. */
1019 mac_command_loop ();
1022 /* end-sanitize-mpw */
1024 quit_command ((char *)0, instream
== stdin
);
1027 /* No exit -- exit is through quit_command. */
1029 #endif /* MAIN_OVERRIDE */
1032 execute_user_command (c
, args
)
1033 struct cmd_list_element
*c
;
1036 register struct command_line
*cmdlines
;
1037 struct cleanup
*old_chain
;
1040 error ("User-defined commands cannot take arguments.");
1042 cmdlines
= c
->user_commands
;
1047 /* Set the instream to 0, indicating execution of a
1048 user-defined function. */
1049 old_chain
= make_cleanup (source_cleanup
, instream
);
1050 instream
= (FILE *) 0;
1053 execute_command (cmdlines
->line
, 0);
1054 cmdlines
= cmdlines
->next
;
1056 do_cleanups (old_chain
);
1059 /* Execute the line P as a command.
1060 Pass FROM_TTY as second argument to the defining function. */
1063 execute_command (p
, from_tty
)
1067 register struct cmd_list_element
*c
;
1068 register enum language flang
;
1069 static int warned
= 0;
1073 /* This can happen when command_line_input hits end of file. */
1077 while (*p
== ' ' || *p
== '\t') p
++;
1082 c
= lookup_cmd (&p
, cmdlist
, "", 0, 1);
1083 /* Pass null arg rather than an empty one. */
1086 /* If this command has been hooked, run the hook first. */
1088 execute_user_command (c
->hook
, (char *)0);
1090 if (c
->class == class_user
)
1091 execute_user_command (c
, arg
);
1092 else if (c
->type
== set_cmd
|| c
->type
== show_cmd
)
1093 do_setshow_command (arg
, from_tty
& caution
, c
);
1094 else if (c
->function
.cfunc
== NO_FUNCTION
)
1095 error ("That is not a command, just a help topic.");
1097 (*c
->function
.cfunc
) (arg
, from_tty
& caution
);
1100 /* Tell the user if the language has changed (except first time). */
1101 if (current_language
!= expected_language
)
1103 if (language_mode
== language_mode_auto
) {
1104 language_info (1); /* Print what changed. */
1109 /* Warn the user if the working language does not match the
1110 language of the current frame. Only warn the user if we are
1111 actually running the program, i.e. there is a stack. */
1112 /* FIXME: This should be cacheing the frame and only running when
1113 the frame changes. */
1114 if (target_has_stack
)
1116 flang
= get_frame_language ();
1118 && flang
!= language_unknown
1119 && flang
!= current_language
->la_language
)
1121 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
1129 command_loop_marker (foo
)
1134 /* Read commands from `instream' and execute them
1135 until end of file or error reading instream. */
1139 struct cleanup
*old_chain
;
1141 int stdin_is_tty
= ISATTY (stdin
);
1143 while (!feof (instream
))
1145 if (window_hook
&& instream
== stdin
)
1146 (*window_hook
) (instream
, prompt
);
1149 if (instream
== stdin
&& stdin_is_tty
)
1150 reinitialize_more_filter ();
1151 old_chain
= make_cleanup (command_loop_marker
, 0);
1152 command
= command_line_input (instream
== stdin
? prompt
: (char *) NULL
,
1153 instream
== stdin
, "prompt");
1156 execute_command (command
, instream
== stdin
);
1157 /* Do any commands attached to breakpoint we stopped at. */
1158 bpstat_do_actions (&stop_bpstat
);
1159 do_cleanups (old_chain
);
1163 /* Commands call this if they do not want to be repeated by null lines. */
1171 /* If we aren't reading from standard input, we are saving the last
1172 thing read from stdin in line and don't want to delete it. Null lines
1173 won't repeat here in any case. */
1174 if (instream
== stdin
)
1178 /* Read a line from the stream "instream" without command line editing.
1180 It prints PRROMPT once at the start.
1181 Action is compatible with "readline", e.g. space for the result is
1182 malloc'd and should be freed by the caller.
1184 A NULL return means end of file. */
1186 gdb_readline (prrompt
)
1191 int input_index
= 0;
1192 int result_size
= 80;
1196 /* Don't use a _filtered function here. It causes the assumed
1197 character position to be off, since the newline we read from
1198 the user is not accounted for. */
1199 fputs_unfiltered (prrompt
, gdb_stdout
);
1200 /* start-sanitize-mpw */
1202 /* Move to a new line so the entered line doesn't have a prompt
1203 on the front of it. */
1204 fputs_unfiltered ("\n", gdb_stdout
);
1206 /* end-sanitize-mpw */
1207 gdb_flush (gdb_stdout
);
1210 result
= (char *) xmalloc (result_size
);
1214 /* Read from stdin if we are executing a user defined command.
1215 This is the right thing for prompt_for_continue, at least. */
1216 c
= fgetc (instream
? instream
: stdin
);
1220 if (input_index
> 0)
1221 /* The last line does not end with a newline. Return it, and
1222 if we are called again fgetc will still return EOF and
1223 we'll return NULL then. */
1232 result
[input_index
++] = c
;
1233 while (input_index
>= result_size
)
1236 result
= (char *) xrealloc (result
, result_size
);
1240 result
[input_index
++] = '\0';
1244 /* Variables which control command line editing and history
1245 substitution. These variables are given default values at the end
1247 static int command_editing_p
;
1248 static int history_expansion_p
;
1249 static int write_history_p
;
1250 static int history_size
;
1251 static char *history_filename
;
1253 /* readline uses the word breaks for two things:
1254 (1) In figuring out where to point the TEXT parameter to the
1255 rl_completion_entry_function. Since we don't use TEXT for much,
1256 it doesn't matter a lot what the word breaks are for this purpose, but
1257 it does affect how much stuff M-? lists.
1258 (2) If one of the matches contains a word break character, readline
1259 will quote it. That's why we switch between
1260 gdb_completer_word_break_characters and
1261 gdb_completer_command_word_break_characters. I'm not sure when
1262 we need this behavior (perhaps for funky characters in C++ symbols?). */
1264 /* Variables which are necessary for fancy command line editing. */
1265 char *gdb_completer_word_break_characters
=
1266 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1268 /* When completing on command names, we remove '-' from the list of
1269 word break characters, since we use it in command names. If the
1270 readline library sees one in any of the current completion strings,
1271 it thinks that the string needs to be quoted and automatically supplies
1273 char *gdb_completer_command_word_break_characters
=
1274 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
1276 /* Characters that can be used to quote completion strings. Note that we
1277 can't include '"' because the gdb C parser treats such quoted sequences
1279 char *gdb_completer_quote_characters
=
1282 /* Functions that are used as part of the fancy command line editing. */
1284 /* This can be used for functions which don't want to complete on symbols
1285 but don't want to complete on anything else either. */
1288 noop_completer (text
, prefix
)
1295 /* Complete on filenames. */
1297 filename_completer (text
, word
)
1301 /* From readline. */
1302 extern char *filename_completion_function ();
1303 int subsequent_name
;
1305 int return_val_used
;
1306 int return_val_alloced
;
1308 return_val_used
= 0;
1309 /* Small for testing. */
1310 return_val_alloced
= 1;
1311 return_val
= (char **) xmalloc (return_val_alloced
* sizeof (char *));
1313 subsequent_name
= 0;
1317 p
= filename_completion_function (text
, subsequent_name
);
1318 if (return_val_used
>= return_val_alloced
)
1320 return_val_alloced
*= 2;
1322 (char **) xrealloc (return_val
,
1323 return_val_alloced
* sizeof (char *));
1327 return_val
[return_val_used
++] = p
;
1330 /* Like emacs, don't complete on old versions. Especially useful
1331 in the "source" command. */
1332 if (p
[strlen (p
) - 1] == '~')
1338 /* Return exactly p. */
1339 return_val
[return_val_used
++] = p
;
1340 else if (word
> text
)
1342 /* Return some portion of p. */
1343 q
= xmalloc (strlen (p
) + 5);
1344 strcpy (q
, p
+ (word
- text
));
1345 return_val
[return_val_used
++] = q
;
1350 /* Return some of TEXT plus p. */
1351 q
= xmalloc (strlen (p
) + (text
- word
) + 5);
1352 strncpy (q
, word
, text
- word
);
1353 q
[text
- word
] = '\0';
1355 return_val
[return_val_used
++] = q
;
1359 subsequent_name
= 1;
1362 /* There is no way to do this just long enough to affect quote inserting
1363 without also affecting the next completion. This should be fixed in
1365 /* Insure that readline does the right thing
1366 with respect to inserting quotes. */
1367 rl_completer_word_break_characters
= "";
1372 /* Here are some useful test cases for completion. FIXME: These should
1373 be put in the test suite. They should be tested with both M-? and TAB.
1375 "show output-" "radix"
1376 "show output" "-radix"
1377 "p" ambiguous (commands starting with p--path, print, printf, etc.)
1378 "p " ambiguous (all symbols)
1379 "info t foo" no completions
1380 "info t " no completions
1381 "info t" ambiguous ("info target", "info terminal", etc.)
1382 "info ajksdlfk" no completions
1383 "info ajksdlfk " no completions
1385 "info " ambiguous (all info commands)
1386 "p \"a" no completions (string constant)
1387 "p 'a" ambiguous (all symbols starting with a)
1388 "p b-a" ambiguous (all symbols starting with a)
1389 "p b-" ambiguous (all symbols)
1390 "file Make" "file" (word break hard to screw up here)
1391 "file ../gdb.stabs/we" "ird" (needs to not break word at slash)
1394 /* Generate completions one by one for the completer. Each time we are
1395 called return another potential completion to the caller. The function
1396 is misnamed; it just completes on commands or passes the buck to the
1397 command's completer function; the stuff specific to symbol completion
1398 is in make_symbol_completion_list.
1400 TEXT is readline's idea of the "word" we are looking at; we don't really
1401 like readline's ideas about word breaking so we ignore it.
1403 MATCHES is the number of matches that have currently been collected from
1404 calling this completion function. When zero, then we need to initialize,
1405 otherwise the initialization has already taken place and we can just
1406 return the next potential completion string.
1408 Returns NULL if there are no more completions, else a pointer to a string
1409 which is a possible completion.
1411 RL_LINE_BUFFER is available to be looked at; it contains the entire text
1412 of the line. RL_POINT is the offset in that line of the cursor. You
1413 should pretend that the line ends at RL_POINT. */
1416 symbol_completion_function (text
, matches
)
1420 static char **list
= (char **)NULL
; /* Cache of completions */
1421 static int index
; /* Next cached completion */
1422 char *output
= NULL
;
1423 char *tmp_command
, *p
;
1424 /* Pointer within tmp_command which corresponds to text. */
1426 struct cmd_list_element
*c
, *result_list
;
1430 /* The caller is beginning to accumulate a new set of completions, so
1431 we need to find all of them now, and cache them for returning one at
1432 a time on future calls. */
1436 /* Free the storage used by LIST, but not by the strings inside.
1437 This is because rl_complete_internal () frees the strings. */
1443 /* Choose the default set of word break characters to break completions.
1444 If we later find out that we are doing completions on command strings
1445 (as opposed to strings supplied by the individual command completer
1446 functions, which can be any string) then we will switch to the
1447 special word break set for command strings, which leaves out the
1448 '-' character used in some commands. */
1450 rl_completer_word_break_characters
=
1451 gdb_completer_word_break_characters
;
1453 /* Decide whether to complete on a list of gdb commands or on symbols. */
1454 tmp_command
= (char *) alloca (rl_point
+ 1);
1457 strncpy (tmp_command
, rl_line_buffer
, rl_point
);
1458 tmp_command
[rl_point
] = '\0';
1459 /* Since text always contains some number of characters leading up
1460 to rl_point, we can find the equivalent position in tmp_command
1461 by subtracting that many characters from the end of tmp_command. */
1462 word
= tmp_command
+ rl_point
- strlen (text
);
1466 /* An empty line we want to consider ambiguous; that is, it
1467 could be any command. */
1468 c
= (struct cmd_list_element
*) -1;
1473 c
= lookup_cmd_1 (&p
, cmdlist
, &result_list
, 1);
1476 /* Move p up to the next interesting thing. */
1477 while (*p
== ' ' || *p
== '\t')
1484 /* It is an unrecognized command. So there are no
1485 possible completions. */
1488 else if (c
== (struct cmd_list_element
*) -1)
1492 /* lookup_cmd_1 advances p up to the first ambiguous thing, but
1493 doesn't advance over that thing itself. Do so now. */
1495 while (*q
&& (isalnum (*q
) || *q
== '-' || *q
== '_'))
1497 if (q
!= tmp_command
+ rl_point
)
1499 /* There is something beyond the ambiguous
1500 command, so there are no possible completions. For
1501 example, "info t " or "info t foo" does not complete
1502 to anything, because "info t" can be "info target" or
1508 /* We're trying to complete on the command which was ambiguous.
1509 This we can deal with. */
1512 list
= complete_on_cmdlist (*result_list
->prefixlist
, p
,
1517 list
= complete_on_cmdlist (cmdlist
, p
, word
);
1519 /* Insure that readline does the right thing with respect to
1520 inserting quotes. */
1521 rl_completer_word_break_characters
=
1522 gdb_completer_command_word_break_characters
;
1527 /* We've recognized a full command. */
1529 if (p
== tmp_command
+ rl_point
)
1531 /* There is no non-whitespace in the line beyond the command. */
1533 if (p
[-1] == ' ' || p
[-1] == '\t')
1535 /* The command is followed by whitespace; we need to complete
1536 on whatever comes after command. */
1539 /* It is a prefix command; what comes after it is
1540 a subcommand (e.g. "info "). */
1541 list
= complete_on_cmdlist (*c
->prefixlist
, p
, word
);
1543 /* Insure that readline does the right thing
1544 with respect to inserting quotes. */
1545 rl_completer_word_break_characters
=
1546 gdb_completer_command_word_break_characters
;
1550 /* It is a normal command; what comes after it is
1551 completed by the command's completer function. */
1552 list
= (*c
->completer
) (p
, word
);
1557 /* The command is not followed by whitespace; we need to
1558 complete on the command itself. e.g. "p" which is a
1559 command itself but also can complete to "print", "ptype"
1563 /* Find the command we are completing on. */
1565 while (q
> tmp_command
)
1567 if (isalnum (q
[-1]) || q
[-1] == '-' || q
[-1] == '_')
1573 list
= complete_on_cmdlist (result_list
, q
, word
);
1575 /* Insure that readline does the right thing
1576 with respect to inserting quotes. */
1577 rl_completer_word_break_characters
=
1578 gdb_completer_command_word_break_characters
;
1583 /* There is non-whitespace beyond the command. */
1585 if (c
->prefixlist
&& !c
->allow_unknown
)
1587 /* It is an unrecognized subcommand of a prefix command,
1588 e.g. "info adsfkdj". */
1593 /* It is a normal command. */
1594 list
= (*c
->completer
) (p
, word
);
1600 /* If we found a list of potential completions during initialization then
1601 dole them out one at a time. The vector of completions is NULL
1602 terminated, so after returning the last one, return NULL (and continue
1603 to do so) each time we are called after that, until a new list is
1608 output
= list
[index
];
1616 /* Can't do this because readline hasn't yet checked the word breaks
1617 for figuring out whether to insert a quote. */
1619 /* Make sure the word break characters are set back to normal for the
1620 next time that readline tries to complete something. */
1621 rl_completer_word_break_characters
=
1622 gdb_completer_word_break_characters
;
1628 /* Skip over a possibly quoted word (as defined by the quote characters
1629 and word break characters the completer uses). Returns pointer to the
1630 location after the "word". */
1636 char quote_char
= '\0';
1639 for (scan
= str
; *scan
!= '\0'; scan
++)
1641 if (quote_char
!= '\0')
1643 /* Ignore everything until the matching close quote char */
1644 if (*scan
== quote_char
)
1646 /* Found matching close quote. */
1651 else if (strchr (gdb_completer_quote_characters
, *scan
))
1653 /* Found start of a quoted string. */
1656 else if (strchr (gdb_completer_word_break_characters
, *scan
))
1670 #if STOP_SIGNAL == SIGTSTP
1671 signal (SIGTSTP
, SIG_DFL
);
1673 kill (getpid (), SIGTSTP
);
1674 signal (SIGTSTP
, stop_sig
);
1676 signal (STOP_SIGNAL
, stop_sig
);
1678 printf_unfiltered ("%s", prompt
);
1679 gdb_flush (gdb_stdout
);
1681 /* Forget about any previous command -- null line now will do nothing. */
1684 #endif /* STOP_SIGNAL */
1686 /* Initialize signal handlers. */
1696 signal (SIGINT
, request_quit
);
1698 /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get
1699 passed to the inferior, which we don't want. It would be
1700 possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but
1701 on BSD4.3 systems using vfork, that can affect the
1702 GDB process as well as the inferior (the signal handling tables
1703 might be in memory, shared between the two). Since we establish
1704 a handler for SIGQUIT, when we call exec it will set the signal
1705 to SIG_DFL for us. */
1706 signal (SIGQUIT
, do_nothing
);
1707 if (signal (SIGHUP
, do_nothing
) != SIG_IGN
)
1708 signal (SIGHUP
, disconnect
);
1709 signal (SIGFPE
, float_handler
);
1711 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1712 signal (SIGWINCH
, SIGWINCH_HANDLER
);
1716 /* Read one line from the command input stream `instream'
1717 into the local static buffer `linebuffer' (whose current length
1719 The buffer is made bigger as necessary.
1720 Returns the address of the start of the line.
1722 NULL is returned for end of file.
1724 *If* the instream == stdin & stdin is a terminal, the line read
1725 is copied into the file line saver (global var char *line,
1726 length linesize) so that it can be duplicated.
1728 This routine either uses fancy command line editing or
1729 simple input as the user has requested. */
1732 command_line_input (prrompt
, repeat
, annotation_suffix
)
1735 char *annotation_suffix
;
1737 static char *linebuffer
= 0;
1738 static unsigned linelength
= 0;
1742 char *local_prompt
= prrompt
;
1747 if (annotation_level
> 1 && instream
== stdin
)
1749 local_prompt
= alloca ((prrompt
== NULL
? 0 : strlen (prrompt
))
1750 + strlen (annotation_suffix
) + 40);
1751 if (prrompt
== NULL
)
1752 local_prompt
[0] = '\0';
1754 strcpy (local_prompt
, prrompt
);
1755 strcat (local_prompt
, "\n\032\032");
1756 strcat (local_prompt
, annotation_suffix
);
1757 strcat (local_prompt
, "\n");
1760 if (linebuffer
== 0)
1763 linebuffer
= (char *) xmalloc (linelength
);
1768 /* Control-C quits instantly if typed while in this loop
1769 since it should not wait until the user types a newline. */
1773 signal (STOP_SIGNAL
, stop_sig
);
1778 /* Make sure that all output has been output. Some machines may let
1779 you get away with leaving out some of the gdb_flush, but not all. */
1781 gdb_flush (gdb_stdout
);
1782 gdb_flush (gdb_stderr
);
1784 if (source_file_name
!= NULL
)
1786 ++source_line_number
;
1787 sprintf (source_error
,
1788 "%s%s:%d: Error in sourced command file:\n",
1791 source_line_number
);
1792 error_pre_print
= source_error
;
1795 if (annotation_level
> 1 && instream
== stdin
)
1797 printf_unfiltered ("\n\032\032pre-");
1798 printf_unfiltered (annotation_suffix
);
1799 printf_unfiltered ("\n");
1802 /* Don't use fancy stuff if not talking to stdin. */
1803 if (command_editing_p
&& instream
== stdin
1804 && ISATTY (instream
))
1805 rl
= readline (local_prompt
);
1807 rl
= gdb_readline (local_prompt
);
1809 if (annotation_level
> 1 && instream
== stdin
)
1811 printf_unfiltered ("\n\032\032post-");
1812 printf_unfiltered (annotation_suffix
);
1813 printf_unfiltered ("\n");
1816 if (!rl
|| rl
== (char *) EOF
)
1821 if (strlen(rl
) + 1 + (p
- linebuffer
) > linelength
)
1823 linelength
= strlen(rl
) + 1 + (p
- linebuffer
);
1824 nline
= (char *) xrealloc (linebuffer
, linelength
);
1825 p
+= nline
- linebuffer
;
1829 /* Copy line. Don't copy null at end. (Leaves line alone
1830 if this was just a newline) */
1834 free (rl
); /* Allocated in readline. */
1836 if (p
== linebuffer
|| *(p
- 1) != '\\')
1839 p
--; /* Put on top of '\'. */
1840 local_prompt
= (char *) 0;
1845 signal (STOP_SIGNAL
, SIG_DFL
);
1852 #define SERVER_COMMAND_LENGTH 7
1854 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1855 && STREQN (linebuffer
, "server ", SERVER_COMMAND_LENGTH
);
1858 /* Note that we don't set `line'. Between this and the check in
1859 dont_repeat, this insures that repeating will still do the
1862 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1865 /* Do history expansion if that is wished. */
1866 if (history_expansion_p
&& instream
== stdin
1867 && ISATTY (instream
))
1869 char *history_value
;
1872 *p
= '\0'; /* Insert null now. */
1873 expanded
= history_expand (linebuffer
, &history_value
);
1876 /* Print the changes. */
1877 printf_unfiltered ("%s\n", history_value
);
1879 /* If there was an error, call this function again. */
1882 free (history_value
);
1883 return command_line_input (prrompt
, repeat
, annotation_suffix
);
1885 if (strlen (history_value
) > linelength
)
1887 linelength
= strlen (history_value
) + 1;
1888 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1890 strcpy (linebuffer
, history_value
);
1891 p
= linebuffer
+ strlen(linebuffer
);
1892 free (history_value
);
1896 /* If we just got an empty line, and that is supposed
1897 to repeat the previous command, return the value in the
1901 if (p
== linebuffer
)
1904 while (*p1
== ' ' || *p1
== '\t')
1912 /* Add line to history if appropriate. */
1913 if (instream
== stdin
1914 && ISATTY (stdin
) && *linebuffer
)
1915 add_history (linebuffer
);
1917 /* Note: lines consisting solely of comments are added to the command
1918 history. This is useful when you type a command, and then
1919 realize you don't want to execute it quite yet. You can comment
1920 out the command and then later fetch it from the value history
1921 and remove the '#'. The kill ring is probably better, but some
1922 people are in the habit of commenting things out. */
1924 while ((c
= *p1
++) != '\0')
1927 while ((c
= *p1
++) != '"')
1929 /* Make sure an escaped '"' doesn't make us think the string
1937 while ((c
= *p1
++) != '\'')
1939 /* Make sure an escaped '\'' doesn't make us think the string
1948 /* Found a comment. */
1954 /* Save into global buffer if appropriate. */
1957 if (linelength
> linesize
)
1959 line
= xrealloc (line
, linelength
);
1960 linesize
= linelength
;
1962 strcpy (line
, linebuffer
);
1969 /* Read lines from the input stream
1970 and accumulate them in a chain of struct command_line's
1971 which is then returned. */
1973 struct command_line
*
1974 read_command_lines ()
1976 struct command_line
*first
= 0;
1977 register struct command_line
*next
, *tail
= 0;
1978 register char *p
, *p1
;
1979 struct cleanup
*old_chain
= 0;
1984 p
= command_line_input ((char *) NULL
, instream
== stdin
, "commands");
1986 /* Treat end of file like "end". */
1989 /* Remove leading and trailing blanks. */
1990 while (*p
== ' ' || *p
== '\t') p
++;
1991 p1
= p
+ strlen (p
);
1992 while (p1
!= p
&& (p1
[-1] == ' ' || p1
[-1] == '\t')) p1
--;
1994 /* Is this "end"? */
1995 if (p1
- p
== 3 && !strncmp (p
, "end", 3))
1998 /* No => add this line to the chain of command lines. */
1999 next
= (struct command_line
*) xmalloc (sizeof (struct command_line
));
2000 next
->line
= savestring (p
, p1
- p
);
2008 /* We just read the first line.
2009 From now on, arrange to throw away the lines we have
2010 if we quit or get an error while inside this function. */
2012 old_chain
= make_cleanup (free_command_lines
, &first
);
2019 /* Now we are about to return the chain to our caller,
2020 so freeing it becomes his responsibility. */
2022 discard_cleanups (old_chain
);
2026 /* Free a chain of struct command_line's. */
2029 free_command_lines (lptr
)
2030 struct command_line
**lptr
;
2032 register struct command_line
*l
= *lptr
;
2033 register struct command_line
*next
;
2044 /* Add an element to the list of info subcommands. */
2047 add_info (name
, fun
, doc
)
2049 void (*fun
) PARAMS ((char *, int));
2052 add_cmd (name
, no_class
, fun
, doc
, &infolist
);
2055 /* Add an alias to the list of info subcommands. */
2058 add_info_alias (name
, oldname
, abbrev_flag
)
2063 add_alias_cmd (name
, oldname
, 0, abbrev_flag
, &infolist
);
2066 /* The "info" command is defined as a prefix, with allow_unknown = 0.
2067 Therefore, its own definition is called only for "info" with no args. */
2071 info_command (arg
, from_tty
)
2075 printf_unfiltered ("\"info\" must be followed by the name of an info command.\n");
2076 help_list (infolist
, "info ", -1, gdb_stdout
);
2079 /* The "complete" command is used by Emacs to implement completion. */
2083 complete_command (arg
, from_tty
)
2094 rl_line_buffer
[0] = '\0';
2099 strcpy (rl_line_buffer
, arg
);
2100 rl_point
= strlen (arg
);
2103 for (completion
= symbol_completion_function (rl_line_buffer
, i
= 0);
2105 completion
= symbol_completion_function (rl_line_buffer
, ++i
))
2106 printf_unfiltered ("%s\n", completion
);
2109 /* The "show" command with no arguments shows all the settings. */
2113 show_command (arg
, from_tty
)
2117 cmd_show_list (showlist
, from_tty
, "");
2120 /* Add an element to the list of commands. */
2123 add_com (name
, class, fun
, doc
)
2125 enum command_class
class;
2126 void (*fun
) PARAMS ((char *, int));
2129 add_cmd (name
, class, fun
, doc
, &cmdlist
);
2132 /* Add an alias or abbreviation command to the list of commands. */
2135 add_com_alias (name
, oldname
, class, abbrev_flag
)
2138 enum command_class
class;
2141 add_alias_cmd (name
, oldname
, class, abbrev_flag
, &cmdlist
);
2148 error ("Argument required (%s).", why
);
2153 help_command (command
, from_tty
)
2155 int from_tty
; /* Ignored */
2157 help_cmd (command
, gdb_stdout
);
2161 validate_comname (comname
)
2167 error_no_arg ("name of command to define");
2172 if (!isalnum(*p
) && *p
!= '-')
2173 error ("Junk in argument list: \"%s\"", p
);
2178 /* This is just a placeholder in the command data structures. */
2180 user_defined_command (ignore
, from_tty
)
2187 define_command (comname
, from_tty
)
2191 register struct command_line
*cmds
;
2192 register struct cmd_list_element
*c
, *newc
, *hookc
= 0;
2193 char *tem
= comname
;
2194 #define HOOK_STRING "hook-"
2197 validate_comname (comname
);
2199 /* Look it up, and verify that we got an exact match. */
2200 c
= lookup_cmd (&tem
, cmdlist
, "", -1, 1);
2201 if (c
&& !STREQ (comname
, c
->name
))
2206 if (c
->class == class_user
|| c
->class == class_alias
)
2207 tem
= "Redefine command \"%s\"? ";
2209 tem
= "Really redefine built-in command \"%s\"? ";
2210 if (!query (tem
, c
->name
))
2211 error ("Command \"%s\" not redefined.", c
->name
);
2214 /* If this new command is a hook, then mark the command which it
2215 is hooking. Note that we allow hooking `help' commands, so that
2216 we can hook the `stop' pseudo-command. */
2218 if (!strncmp (comname
, HOOK_STRING
, HOOK_LEN
))
2220 /* Look up cmd it hooks, and verify that we got an exact match. */
2221 tem
= comname
+HOOK_LEN
;
2222 hookc
= lookup_cmd (&tem
, cmdlist
, "", -1, 0);
2223 if (hookc
&& !STREQ (comname
+HOOK_LEN
, hookc
->name
))
2227 warning ("Your new `%s' command does not hook any existing command.",
2229 if (!query ("Proceed? ", (char *)0))
2230 error ("Not confirmed.");
2234 comname
= savestring (comname
, strlen (comname
));
2236 /* If the rest of the commands will be case insensitive, this one
2237 should behave in the same manner. */
2238 for (tem
= comname
; *tem
; tem
++)
2239 if (isupper(*tem
)) *tem
= tolower(*tem
);
2243 printf_unfiltered ("Type commands for definition of \"%s\".\n\
2244 End with a line saying just \"end\".\n", comname
);
2245 gdb_flush (gdb_stdout
);
2248 cmds
= read_command_lines ();
2250 if (c
&& c
->class == class_user
)
2251 free_command_lines (&c
->user_commands
);
2253 newc
= add_cmd (comname
, class_user
, user_defined_command
,
2254 (c
&& c
->class == class_user
)
2255 ? c
->doc
: savestring ("User-defined.", 13), &cmdlist
);
2256 newc
->user_commands
= cmds
;
2258 /* If this new command is a hook, then mark both commands as being
2262 hookc
->hook
= newc
; /* Target gets hooked. */
2263 newc
->hookee
= hookc
; /* We are marked as hooking target cmd. */
2268 document_command (comname
, from_tty
)
2272 struct command_line
*doclines
;
2273 register struct cmd_list_element
*c
;
2274 char *tem
= comname
;
2276 validate_comname (comname
);
2278 c
= lookup_cmd (&tem
, cmdlist
, "", 0, 1);
2280 if (c
->class != class_user
)
2281 error ("Command \"%s\" is built-in.", comname
);
2284 printf_unfiltered ("Type documentation for \"%s\".\n\
2285 End with a line saying just \"end\".\n", comname
);
2287 doclines
= read_command_lines ();
2289 if (c
->doc
) free (c
->doc
);
2292 register struct command_line
*cl1
;
2293 register int len
= 0;
2295 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2296 len
+= strlen (cl1
->line
) + 1;
2298 c
->doc
= (char *) xmalloc (len
+ 1);
2301 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2303 strcat (c
->doc
, cl1
->line
);
2305 strcat (c
->doc
, "\n");
2309 free_command_lines (&doclines
);
2313 print_gnu_advertisement()
2315 printf_unfiltered ("\
2316 GDB is free software and you are welcome to distribute copies of it\n\
2317 under certain conditions; type \"show copying\" to see the conditions.\n\
2318 There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\
2323 print_gdb_version (stream
)
2326 fprintf_filtered (stream
, "\
2327 GDB %s (%s", version
, host_name
);
2329 if (!STREQ (host_name
, target_name
))
2330 fprintf_filtered (stream
, " --target %s", target_name
);
2332 fprintf_filtered (stream
, "), ");
2334 fprintf_filtered (stream
, "Copyright 1994 Free Software Foundation, Inc.");
2339 show_version (args
, from_tty
)
2344 print_gnu_advertisement ();
2345 print_gdb_version (gdb_stdout
);
2346 printf_filtered ("\n");
2350 /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb
2356 printf_unfiltered ("%s", prompt
);
2357 gdb_flush (gdb_stdout
);
2361 quit_command (args
, from_tty
)
2365 if (inferior_pid
!= 0 && target_has_execution
)
2369 if (query ("The program is running. Quit anyway (and detach it)? "))
2370 target_detach (args
, from_tty
);
2372 error ("Not confirmed.");
2376 if (query ("The program is running. Quit anyway (and kill it)? "))
2379 error ("Not confirmed.");
2382 /* UDI wants this, to kill the TIP. */
2385 /* Save the history information if it is appropriate to do so. */
2386 if (write_history_p
&& history_filename
)
2387 write_history (history_filename
);
2392 /* Returns whether GDB is running on a terminal and whether the user
2393 desires that questions be asked of them on that terminal. */
2396 input_from_terminal_p ()
2398 return gdb_has_a_terminal () && (instream
== stdin
) & caution
;
2403 pwd_command (args
, from_tty
)
2407 if (args
) error ("The \"pwd\" command does not take an argument: %s", args
);
2408 getcwd (dirbuf
, sizeof (dirbuf
));
2410 if (!STREQ (dirbuf
, current_directory
))
2411 printf_unfiltered ("Working directory %s\n (canonically %s).\n",
2412 current_directory
, dirbuf
);
2414 printf_unfiltered ("Working directory %s.\n", current_directory
);
2418 cd_command (dir
, from_tty
)
2423 /* Found something other than leading repetitions of "/..". */
2424 int found_real_path
;
2427 /* If the new directory is absolute, repeat is a no-op; if relative,
2428 repeat might be useful but is more likely to be a mistake. */
2432 error_no_arg ("new working directory");
2434 dir
= tilde_expand (dir
);
2435 make_cleanup (free
, dir
);
2437 if (chdir (dir
) < 0)
2438 perror_with_name (dir
);
2441 dir
= savestring (dir
, len
- (len
> 1 && dir
[len
-1] == '/'));
2443 current_directory
= dir
;
2446 if (current_directory
[0] == '/' && current_directory
[1] == '\0')
2447 current_directory
= concat (current_directory
, dir
, NULL
);
2449 current_directory
= concat (current_directory
, "/", dir
, NULL
);
2453 /* Now simplify any occurrences of `.' and `..' in the pathname. */
2455 found_real_path
= 0;
2456 for (p
= current_directory
; *p
;)
2458 if (p
[0] == '/' && p
[1] == '.' && (p
[2] == 0 || p
[2] == '/'))
2460 else if (p
[0] == '/' && p
[1] == '.' && p
[2] == '.'
2461 && (p
[3] == 0 || p
[3] == '/'))
2463 if (found_real_path
)
2465 /* Search backwards for the directory just before the "/.."
2466 and obliterate it and the "/..". */
2468 while (q
!= current_directory
&& q
[-1] != '/')
2471 if (q
== current_directory
)
2472 /* current_directory is
2473 a relative pathname ("can't happen"--leave it alone). */
2477 strcpy (q
- 1, p
+ 3);
2482 /* We are dealing with leading repetitions of "/..", for example
2483 "/../..", which is the Mach super-root. */
2488 found_real_path
= 1;
2493 forget_cached_source_info ();
2496 pwd_command ((char *) 0, 1);
2499 struct source_cleanup_lines_args
{
2502 char *old_pre_error
;
2503 char *old_error_pre_print
;
2507 source_cleanup_lines (args
)
2510 struct source_cleanup_lines_args
*p
=
2511 (struct source_cleanup_lines_args
*)args
;
2512 source_line_number
= p
->old_line
;
2513 source_file_name
= p
->old_file
;
2514 source_pre_error
= p
->old_pre_error
;
2515 error_pre_print
= p
->old_error_pre_print
;
2520 source_command (args
, from_tty
)
2525 struct cleanup
*old_cleanups
;
2527 struct source_cleanup_lines_args old_lines
;
2532 error ("source command requires pathname of file to source.");
2535 file
= tilde_expand (file
);
2536 old_cleanups
= make_cleanup (free
, file
);
2538 stream
= fopen (file
, FOPEN_RT
);
2540 perror_with_name (file
);
2542 make_cleanup (fclose
, stream
);
2544 old_lines
.old_line
= source_line_number
;
2545 old_lines
.old_file
= source_file_name
;
2546 old_lines
.old_pre_error
= source_pre_error
;
2547 old_lines
.old_error_pre_print
= error_pre_print
;
2548 make_cleanup (source_cleanup_lines
, &old_lines
);
2549 source_line_number
= 0;
2550 source_file_name
= file
;
2551 source_pre_error
= error_pre_print
== NULL
? "" : error_pre_print
;
2552 source_pre_error
= savestring (source_pre_error
, strlen (source_pre_error
));
2553 make_cleanup (free
, source_pre_error
);
2554 /* This will get set every time we read a line. So it won't stay "" for
2556 error_pre_print
= "";
2558 needed_length
= strlen (source_file_name
) + strlen (source_pre_error
) + 80;
2559 if (source_error_allocated
< needed_length
)
2561 source_error_allocated
*= 2;
2562 if (source_error_allocated
< needed_length
)
2563 source_error_allocated
= needed_length
;
2564 if (source_error
== NULL
)
2565 source_error
= xmalloc (source_error_allocated
);
2567 source_error
= xrealloc (source_error
, source_error_allocated
);
2570 read_command_file (stream
);
2572 do_cleanups (old_cleanups
);
2577 echo_command (text
, from_tty
)
2585 while ((c
= *p
++) != '\0')
2589 /* \ at end of argument is used after spaces
2590 so they won't be lost. */
2594 c
= parse_escape (&p
);
2596 printf_filtered ("%c", c
);
2599 printf_filtered ("%c", c
);
2602 /* Force this output to appear now. */
2604 gdb_flush (gdb_stdout
);
2608 /* Functions to manipulate command line editing control variables. */
2610 /* Number of commands to print in each call to show_commands. */
2611 #define Hist_print 10
2613 show_commands (args
, from_tty
)
2617 /* Index for history commands. Relative to history_base. */
2620 /* Number of the history entry which we are planning to display next.
2621 Relative to history_base. */
2624 /* The first command in the history which doesn't exist (i.e. one more
2625 than the number of the last command). Relative to history_base. */
2628 extern HIST_ENTRY
*history_get
PARAMS ((int));
2630 /* Print out some of the commands from the command history. */
2631 /* First determine the length of the history list. */
2632 hist_len
= history_size
;
2633 for (offset
= 0; offset
< history_size
; offset
++)
2635 if (!history_get (history_base
+ offset
))
2644 if (args
[0] == '+' && args
[1] == '\0')
2645 /* "info editing +" should print from the stored position. */
2648 /* "info editing <exp>" should print around command number <exp>. */
2649 num
= (parse_and_eval_address (args
) - history_base
) - Hist_print
/ 2;
2651 /* "show commands" means print the last Hist_print commands. */
2654 num
= hist_len
- Hist_print
;
2660 /* If there are at least Hist_print commands, we want to display the last
2661 Hist_print rather than, say, the last 6. */
2662 if (hist_len
- num
< Hist_print
)
2664 num
= hist_len
- Hist_print
;
2669 for (offset
= num
; offset
< num
+ Hist_print
&& offset
< hist_len
; offset
++)
2671 printf_filtered ("%5d %s\n", history_base
+ offset
,
2672 (history_get (history_base
+ offset
))->line
);
2675 /* The next command we want to display is the next one that we haven't
2679 /* If the user repeats this command with return, it should do what
2680 "show commands +" does. This is unnecessary if arg is null,
2681 because "show commands +" is not useful after "show commands". */
2682 if (from_tty
&& args
)
2689 /* Called by do_setshow_command. */
2692 set_history_size_command (args
, from_tty
, c
)
2695 struct cmd_list_element
*c
;
2697 if (history_size
== INT_MAX
)
2698 unstifle_history ();
2699 else if (history_size
>= 0)
2700 stifle_history (history_size
);
2703 history_size
= INT_MAX
;
2704 error ("History size must be non-negative");
2710 set_history (args
, from_tty
)
2714 printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n");
2715 help_list (sethistlist
, "set history ", -1, gdb_stdout
);
2720 show_history (args
, from_tty
)
2724 cmd_show_list (showhistlist
, from_tty
, "");
2727 int info_verbose
= 0; /* Default verbose msgs off */
2729 /* Called by do_setshow_command. An elaborate joke. */
2732 set_verbose (args
, from_tty
, c
)
2735 struct cmd_list_element
*c
;
2737 char *cmdname
= "verbose";
2738 struct cmd_list_element
*showcmd
;
2740 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
2744 c
->doc
= "Set verbose printing of informational messages.";
2745 showcmd
->doc
= "Show verbose printing of informational messages.";
2749 c
->doc
= "Set verbosity.";
2750 showcmd
->doc
= "Show verbosity.";
2755 float_handler (signo
)
2758 /* This message is based on ANSI C, section 4.7. Note that integer
2759 divide by zero causes this, so "float" is a misnomer. */
2760 signal (SIGFPE
, float_handler
);
2761 error ("Erroneous arithmetic operation.");
2764 /* Return whether we are running a batch file or from terminal. */
2768 return !(instream
== stdin
&& ISATTY (stdin
));
2780 enablebreaklist
= NULL
;
2785 showhistlist
= NULL
;
2786 unsethistlist
= NULL
;
2787 #if MAINTENANCE_CMDS
2788 maintenancelist
= NULL
;
2789 maintenanceinfolist
= NULL
;
2790 maintenanceprintlist
= NULL
;
2792 setprintlist
= NULL
;
2793 showprintlist
= NULL
;
2794 setchecklist
= NULL
;
2795 showchecklist
= NULL
;
2798 /* Init the history buffer. Note that we are called after the init file(s)
2799 * have been read so that the user can change the history file via his
2800 * .gdbinit file (for instance). The GDBHISTFILE environment variable
2801 * overrides all of this.
2809 tmpenv
= getenv ("HISTSIZE");
2811 history_size
= atoi (tmpenv
);
2812 else if (!history_size
)
2815 stifle_history (history_size
);
2817 tmpenv
= getenv ("GDBHISTFILE");
2819 history_filename
= savestring (tmpenv
, strlen(tmpenv
));
2820 else if (!history_filename
) {
2821 /* We include the current directory so that if the user changes
2822 directories the file written will be the same as the one
2824 history_filename
= concat (current_directory
, "/.gdb_history", NULL
);
2826 read_history (history_filename
);
2832 struct cmd_list_element
*c
;
2834 #ifdef DEFAULT_PROMPT
2835 prompt
= savestring (DEFAULT_PROMPT
, strlen(DEFAULT_PROMPT
));
2837 prompt
= savestring ("(gdb) ", 6);
2840 /* Set the important stuff up for command editing. */
2841 command_editing_p
= 1;
2842 history_expansion_p
= 0;
2843 write_history_p
= 0;
2845 /* Setup important stuff for command line editing. */
2846 rl_completion_entry_function
= (int (*)()) symbol_completion_function
;
2847 rl_completer_word_break_characters
= gdb_completer_word_break_characters
;
2848 rl_completer_quote_characters
= gdb_completer_quote_characters
;
2849 rl_readline_name
= "gdb";
2851 /* Define the classes of commands.
2852 They will appear in the help list in the reverse of this order. */
2854 add_cmd ("internals", class_maintenance
, NO_FUNCTION
,
2855 "Maintenance commands.\n\
2856 Some gdb commands are provided just for use by gdb maintainers.\n\
2857 These commands are subject to frequent change, and may not be as\n\
2858 well documented as user commands.",
2860 add_cmd ("obscure", class_obscure
, NO_FUNCTION
, "Obscure features.", &cmdlist
);
2861 add_cmd ("aliases", class_alias
, NO_FUNCTION
, "Aliases of other commands.", &cmdlist
);
2862 add_cmd ("user-defined", class_user
, NO_FUNCTION
, "User-defined commands.\n\
2863 The commands in this class are those defined by the user.\n\
2864 Use the \"define\" command to define a command.", &cmdlist
);
2865 add_cmd ("support", class_support
, NO_FUNCTION
, "Support facilities.", &cmdlist
);
2866 add_cmd ("status", class_info
, NO_FUNCTION
, "Status inquiries.", &cmdlist
);
2867 add_cmd ("files", class_files
, NO_FUNCTION
, "Specifying and examining files.", &cmdlist
);
2868 add_cmd ("breakpoints", class_breakpoint
, NO_FUNCTION
, "Making program stop at certain points.", &cmdlist
);
2869 add_cmd ("data", class_vars
, NO_FUNCTION
, "Examining data.", &cmdlist
);
2870 add_cmd ("stack", class_stack
, NO_FUNCTION
, "Examining the stack.\n\
2871 The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
2872 counting from zero for the innermost (currently executing) frame.\n\n\
2873 At any time gdb identifies one frame as the \"selected\" frame.\n\
2874 Variable lookups are done with respect to the selected frame.\n\
2875 When the program being debugged stops, gdb selects the innermost frame.\n\
2876 The commands below can be used to select other frames by number or address.",
2878 add_cmd ("running", class_run
, NO_FUNCTION
, "Running the program.", &cmdlist
);
2880 add_com ("pwd", class_files
, pwd_command
,
2881 "Print working directory. This is used for your program as well.");
2882 c
= add_cmd ("cd", class_files
, cd_command
,
2883 "Set working directory to DIR for debugger and program being debugged.\n\
2884 The change does not take effect for the program being debugged\n\
2885 until the next time it is started.", &cmdlist
);
2886 c
->completer
= filename_completer
;
2889 (add_set_cmd ("prompt", class_support
, var_string
, (char *)&prompt
,
2894 add_com ("echo", class_support
, echo_command
,
2895 "Print a constant string. Give string as argument.\n\
2896 C escape sequences may be used in the argument.\n\
2897 No newline is added at the end of the argument;\n\
2898 use \"\\n\" if you want a newline to be printed.\n\
2899 Since leading and trailing whitespace are ignored in command arguments,\n\
2900 if you want to print some you must use \"\\\" before leading whitespace\n\
2901 to be printed or after trailing whitespace.");
2902 add_com ("document", class_support
, document_command
,
2903 "Document a user-defined command.\n\
2904 Give command name as argument. Give documentation on following lines.\n\
2905 End with a line of just \"end\".");
2906 add_com ("define", class_support
, define_command
,
2907 "Define a new command name. Command name is argument.\n\
2908 Definition appears on following lines, one command per line.\n\
2909 End with a line of just \"end\".\n\
2910 Use the \"document\" command to give documentation for the new command.\n\
2911 Commands defined in this way do not take arguments.");
2914 c
= add_cmd ("source", class_support
, source_command
,
2915 "Read commands from a file named FILE.\n\
2916 Note that the file \"" GDBINIT_FILENAME
"\" is read automatically in this way\n\
2917 when gdb is started.", &cmdlist
);
2919 /* Punt file name, we can't help it easily. */
2920 c
= add_cmd ("source", class_support
, source_command
,
2921 "Read commands from a file named FILE.\n\
2922 Note that the file \".gdbinit\" is read automatically in this way\n\
2923 when gdb is started.", &cmdlist
);
2925 c
->completer
= filename_completer
;
2927 add_com ("quit", class_support
, quit_command
, "Exit gdb.");
2928 add_com ("help", class_support
, help_command
, "Print list of commands.");
2929 add_com_alias ("q", "quit", class_support
, 1);
2930 add_com_alias ("h", "help", class_support
, 1);
2933 c
= add_set_cmd ("verbose", class_support
, var_boolean
, (char *)&info_verbose
,
2936 add_show_from_set (c
, &showlist
);
2937 c
->function
.sfunc
= set_verbose
;
2938 set_verbose (NULL
, 0, c
);
2941 (add_set_cmd ("editing", class_support
, var_boolean
, (char *)&command_editing_p
,
2942 "Set editing of command lines as they are typed.\n\
2943 Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\
2944 Without an argument, command line editing is enabled. To edit, use\n\
2945 EMACS-like or VI-like commands like control-P or ESC.", &setlist
),
2948 add_prefix_cmd ("history", class_support
, set_history
,
2949 "Generic command for setting command history parameters.",
2950 &sethistlist
, "set history ", 0, &setlist
);
2951 add_prefix_cmd ("history", class_support
, show_history
,
2952 "Generic command for showing command history parameters.",
2953 &showhistlist
, "show history ", 0, &showlist
);
2956 (add_set_cmd ("expansion", no_class
, var_boolean
, (char *)&history_expansion_p
,
2957 "Set history expansion on command input.\n\
2958 Without an argument, history expansion is enabled.", &sethistlist
),
2962 (add_set_cmd ("save", no_class
, var_boolean
, (char *)&write_history_p
,
2963 "Set saving of the history record on exit.\n\
2964 Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\
2965 Without an argument, saving is enabled.", &sethistlist
),
2968 c
= add_set_cmd ("size", no_class
, var_integer
, (char *)&history_size
,
2969 "Set the size of the command history, \n\
2970 ie. the number of previous commands to keep a record of.", &sethistlist
);
2971 add_show_from_set (c
, &showhistlist
);
2972 c
->function
.sfunc
= set_history_size_command
;
2975 (add_set_cmd ("filename", no_class
, var_filename
, (char *)&history_filename
,
2976 "Set the filename in which to record the command history\n\
2977 (the list of previous commands of which a record is kept).", &sethistlist
),
2981 (add_set_cmd ("confirm", class_support
, var_boolean
,
2983 "Set whether to confirm potentially dangerous operations.",
2987 add_prefix_cmd ("info", class_info
, info_command
,
2988 "Generic command for showing things about the program being debugged.",
2989 &infolist
, "info ", 0, &cmdlist
);
2990 add_com_alias ("i", "info", class_info
, 1);
2992 add_com ("complete", class_obscure
, complete_command
,
2993 "List the completions for the rest of the line as a command.");
2995 add_prefix_cmd ("show", class_info
, show_command
,
2996 "Generic command for showing things about the debugger.",
2997 &showlist
, "show ", 0, &cmdlist
);
2998 /* Another way to get at the same thing. */
2999 add_info ("set", show_command
, "Show all GDB settings.");
3001 add_cmd ("commands", no_class
, show_commands
,
3002 "Show the the history of commands you typed.\n\
3003 You can supply a command number to start with, or a `+' to start after\n\
3004 the previous command number shown.",
3007 add_cmd ("version", no_class
, show_version
,
3008 "Show what version of GDB this is.", &showlist
);
3010 /* If target is open when baud changes, it doesn't take effect until the
3011 next open (I think, not sure). */
3012 add_show_from_set (add_set_cmd ("remotebaud", no_class
,
3013 var_zinteger
, (char *)&baud_rate
,
3014 "Set baud rate for remote serial I/O.\n\
3015 This value is used to set the speed of the serial port when debugging\n\
3016 using remote targets.", &setlist
),
3020 add_set_cmd ("remotedebug", no_class
, var_zinteger
, (char *)&remote_debug
,
3021 "Set debugging of remote protocol.\n\
3022 When enabled, each packet sent or received with the remote target\n\
3023 is displayed.", &setlist
),