Commit | Line | Data |
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c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
a752853e | 2 | |
8acc9f48 | 3 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "gdbcmd.h" | |
210661e7 EZ |
22 | #include "cli/cli-cmds.h" |
23 | #include "cli/cli-script.h" | |
24 | #include "cli/cli-setshow.h" | |
18a642a1 | 25 | #include "cli/cli-decode.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "inferior.h" | |
60250e8b | 28 | #include "exceptions.h" |
042be3a9 | 29 | #include <signal.h> |
c906108c SS |
30 | #include "target.h" |
31 | #include "breakpoint.h" | |
32 | #include "gdbtypes.h" | |
33 | #include "expression.h" | |
34 | #include "value.h" | |
35 | #include "language.h" | |
c5aa993b | 36 | #include "terminal.h" /* For job_control. */ |
c906108c | 37 | #include "annotate.h" |
c5f0f3d0 | 38 | #include "completer.h" |
c906108c | 39 | #include "top.h" |
d4f3574e | 40 | #include "version.h" |
210661e7 | 41 | #include "serial.h" |
d16aafd8 | 42 | #include "doublest.h" |
f9c696d2 | 43 | #include "gdb_assert.h" |
f17517ea | 44 | #include "main.h" |
2e03ee74 | 45 | #include "event-loop.h" |
8ea051c5 | 46 | #include "gdbthread.h" |
9dea9163 | 47 | #include "python/python.h" |
b4a14fd0 | 48 | #include "interps.h" |
6dea1fbd | 49 | #include "observer.h" |
bd712aed | 50 | #include "maint.h" |
97c85fc6 | 51 | #include "filenames.h" |
c906108c | 52 | |
371d5dec | 53 | /* readline include files. */ |
dbda9972 AC |
54 | #include "readline/readline.h" |
55 | #include "readline/history.h" | |
c906108c SS |
56 | |
57 | /* readline defines this. */ | |
58 | #undef savestring | |
59 | ||
60 | #include <sys/types.h> | |
c906108c | 61 | |
c2c6d25f | 62 | #include "event-top.h" |
c906108c SS |
63 | #include "gdb_string.h" |
64 | #include "gdb_stat.h" | |
65 | #include <ctype.h> | |
8b93c638 JM |
66 | #include "ui-out.h" |
67 | #include "cli-out.h" | |
2f9d54cf | 68 | #include "tracepoint.h" |
c906108c | 69 | |
ca7b0bbc TT |
70 | extern void initialize_all_files (void); |
71 | ||
95298e72 PM |
72 | #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt |
73 | #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix | |
74 | #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix | |
75 | ||
371d5dec | 76 | /* Default command line prompt. This is overriden in some configs. */ |
104c1213 JM |
77 | |
78 | #ifndef DEFAULT_PROMPT | |
79 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
80 | #endif |
81 | ||
e655c1a2 | 82 | /* Initialization file name for gdb. This is host-dependent. */ |
eaae3919 | 83 | |
e655c1a2 | 84 | const char gdbinit[] = GDBINIT; |
c906108c SS |
85 | |
86 | int inhibit_gdbinit = 0; | |
87 | ||
88 | /* If nonzero, and GDB has been configured to be able to use windows, | |
89 | attempt to open them upon startup. */ | |
90 | ||
f15ab4a7 | 91 | int use_windows = 0; |
c906108c | 92 | |
c906108c SS |
93 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
94 | ||
050a2e1d PA |
95 | /* Flag for whether we want to confirm potentially dangerous |
96 | operations. Default is yes. */ | |
97 | ||
e360902b | 98 | int confirm = 1; |
c906108c | 99 | |
920d2a44 | 100 | static void |
e360902b | 101 | show_confirm (struct ui_file *file, int from_tty, |
920d2a44 AC |
102 | struct cmd_list_element *c, const char *value) |
103 | { | |
3e43a32a MS |
104 | fprintf_filtered (file, _("Whether to confirm potentially " |
105 | "dangerous operations is %s.\n"), | |
920d2a44 AC |
106 | value); |
107 | } | |
c906108c | 108 | |
371d5dec MS |
109 | /* stdio stream that command input is being read from. Set to stdin |
110 | normally. Set by source_command to the file we are sourcing. Set | |
111 | to NULL if we are executing a user-defined command or interacting | |
112 | via a GUI. */ | |
c906108c SS |
113 | |
114 | FILE *instream; | |
115 | ||
698ba934 DJ |
116 | /* Flag to indicate whether a user defined command is currently running. */ |
117 | ||
118 | int in_user_command; | |
119 | ||
c906108c SS |
120 | /* Current working directory. */ |
121 | ||
122 | char *current_directory; | |
123 | ||
124 | /* The directory name is actually stored here (usually). */ | |
125 | char gdb_dirbuf[1024]; | |
126 | ||
127 | /* Function to call before reading a command, if nonzero. | |
128 | The function receives two args: an input stream, | |
129 | and a prompt string. */ | |
130 | ||
507f3c78 | 131 | void (*window_hook) (FILE *, char *); |
c906108c | 132 | |
c906108c SS |
133 | /* Buffer used for reading command lines, and the size |
134 | allocated for it so far. */ | |
135 | ||
dc7eb48e PA |
136 | char *saved_command_line; |
137 | int saved_command_line_size = 100; | |
c906108c SS |
138 | |
139 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 140 | affects things like recording into the command history, commands |
c906108c SS |
141 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
142 | whatever) can issue its own commands and also send along commands | |
143 | from the user, and have the user not notice that the user interface | |
144 | is issuing commands too. */ | |
145 | int server_command; | |
146 | ||
371d5dec | 147 | /* Timeout limit for response from target. */ |
c906108c | 148 | |
ce808e91 AC |
149 | /* The default value has been changed many times over the years. It |
150 | was originally 5 seconds. But that was thought to be a long time | |
151 | to sit and wait, so it was changed to 2 seconds. That was thought | |
152 | to be plenty unless the connection was going through some terminal | |
153 | server or multiplexer or other form of hairy serial connection. | |
154 | ||
155 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
156 | it began being used in other remote-* targets. It appears that the | |
157 | default was changed to 20 seconds at that time, perhaps because the | |
85a453d5 | 158 | Renesas E7000 ICE didn't always respond in a timely manner. |
ce808e91 AC |
159 | |
160 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
161 | 20 seconds is far worse. This demonstrates the difficulty of using | |
162 | a single variable for all protocol timeouts. | |
163 | ||
164 | As remote.c is used much more than remote-e7000.c, it was changed | |
371d5dec | 165 | back to 2 seconds in 1999. */ |
ce808e91 AC |
166 | |
167 | int remote_timeout = 2; | |
c906108c SS |
168 | |
169 | /* Non-zero tells remote* modules to output debugging info. */ | |
170 | ||
171 | int remote_debug = 0; | |
172 | ||
6dd77b81 RH |
173 | /* Sbrk location on entry to main. Used for statistics only. */ |
174 | #ifdef HAVE_SBRK | |
175 | char *lim_at_start; | |
176 | #endif | |
177 | ||
c906108c SS |
178 | /* Hooks for alternate command interfaces. */ |
179 | ||
371d5dec MS |
180 | /* Called after most modules have been initialized, but before taking |
181 | users command file. | |
1ad24239 | 182 | |
371d5dec MS |
183 | If the UI fails to initialize and it wants GDB to continue using |
184 | the default UI, then it should clear this hook before returning. */ | |
c906108c | 185 | |
9a4105ab | 186 | void (*deprecated_init_ui_hook) (char *argv0); |
7a292a7a | 187 | |
371d5dec MS |
188 | /* This hook is called from within gdb's many mini-event loops which |
189 | could steal control from a real user interface's event loop. It | |
190 | returns non-zero if the user is requesting a detach, zero | |
191 | otherwise. */ | |
7a292a7a | 192 | |
98bbd631 | 193 | int (*deprecated_ui_loop_hook) (int); |
c906108c | 194 | |
c906108c | 195 | |
c906108c SS |
196 | /* Called from print_frame_info to list the line we stopped in. */ |
197 | ||
371d5dec MS |
198 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, |
199 | int line, | |
200 | int stopline, | |
201 | int noerror); | |
c906108c SS |
202 | /* Replaces most of query. */ |
203 | ||
9a4105ab | 204 | int (*deprecated_query_hook) (const char *, va_list); |
c906108c SS |
205 | |
206 | /* Replaces most of warning. */ | |
207 | ||
9a4105ab | 208 | void (*deprecated_warning_hook) (const char *, va_list); |
c906108c | 209 | |
9a4105ab AC |
210 | /* These three functions support getting lines of text from the user. |
211 | They are used in sequence. First deprecated_readline_begin_hook is | |
212 | called with a text string that might be (for example) a message for | |
213 | the user to type in a sequence of commands to be executed at a | |
214 | breakpoint. If this function calls back to a GUI, it might take | |
215 | this opportunity to pop up a text interaction window with this | |
216 | message. Next, deprecated_readline_hook is called with a prompt | |
217 | that is emitted prior to collecting the user input. It can be | |
218 | called multiple times. Finally, deprecated_readline_end_hook is | |
219 | called to notify the GUI that we are done with the interaction | |
220 | window and it can close it. */ | |
c906108c | 221 | |
9a4105ab AC |
222 | void (*deprecated_readline_begin_hook) (char *, ...); |
223 | char *(*deprecated_readline_hook) (char *); | |
224 | void (*deprecated_readline_end_hook) (void); | |
c906108c | 225 | |
6426a772 | 226 | /* Called as appropriate to notify the interface that we have attached |
371d5dec | 227 | to or detached from an already running process. */ |
6426a772 | 228 | |
9a4105ab AC |
229 | void (*deprecated_attach_hook) (void); |
230 | void (*deprecated_detach_hook) (void); | |
6426a772 | 231 | |
371d5dec MS |
232 | /* Called during long calculations to allow GUI to repair window |
233 | damage, and to check for stop buttons, etc... */ | |
c906108c | 234 | |
9a4105ab | 235 | void (*deprecated_interactive_hook) (void); |
c906108c | 236 | |
c378eb4e | 237 | /* Tell the GUI someone changed the register REGNO. -1 means |
c906108c | 238 | that the caller does not know which register changed or |
371d5dec | 239 | that several registers have changed (see value_assign). */ |
9a4105ab | 240 | void (*deprecated_register_changed_hook) (int regno); |
c906108c | 241 | |
371d5dec MS |
242 | /* Called when going to wait for the target. Usually allows the GUI |
243 | to run while waiting for target events. */ | |
c906108c | 244 | |
9a4105ab | 245 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, |
47608cb1 PA |
246 | struct target_waitstatus *status, |
247 | int options); | |
c906108c | 248 | |
371d5dec MS |
249 | /* Used by UI as a wrapper around command execution. May do various |
250 | things like enabling/disabling buttons, etc... */ | |
c906108c | 251 | |
371d5dec MS |
252 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, |
253 | char *cmd, int from_tty); | |
c906108c | 254 | |
96baa820 JM |
255 | /* Called after a `set' command has finished. Is only run if the |
256 | `set' command succeeded. */ | |
257 | ||
9a4105ab | 258 | void (*deprecated_set_hook) (struct cmd_list_element * c); |
96baa820 | 259 | |
c906108c SS |
260 | /* Called when the current thread changes. Argument is thread id. */ |
261 | ||
9a4105ab | 262 | void (*deprecated_context_hook) (int id); |
c906108c | 263 | |
c906108c SS |
264 | /* Handler for SIGHUP. */ |
265 | ||
266 | #ifdef SIGHUP | |
392a587b | 267 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 | 268 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 269 | event-top.c into this file, top.c. */ |
b2cd6b29 JM |
270 | /* static */ void |
271 | quit_cover (void) | |
c906108c | 272 | { |
e360902b PA |
273 | /* Stop asking user for confirmation --- we're exiting. This |
274 | prevents asking the user dumb questions. */ | |
275 | confirm = 0; | |
c5aa993b | 276 | quit_command ((char *) 0, 0); |
c906108c SS |
277 | } |
278 | #endif /* defined SIGHUP */ | |
279 | \f | |
7a9dd1b2 | 280 | /* Line number we are currently in, in a file which is being sourced. */ |
392a587b | 281 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 282 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 283 | event-top.c into this file, top.c. */ |
cd0fc7c3 | 284 | /* static */ int source_line_number; |
c906108c SS |
285 | |
286 | /* Name of the file we are sourcing. */ | |
392a587b | 287 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 288 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 289 | event-top.c into this file, top.c. */ |
05159abe | 290 | /* static */ const char *source_file_name; |
c906108c | 291 | |
c906108c SS |
292 | /* Clean up on error during a "source" command (or execution of a |
293 | user-defined command). */ | |
294 | ||
d318976c | 295 | void |
e41a3b1a | 296 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
297 | { |
298 | /* Restore the previous input stream. */ | |
299 | instream = stream; | |
300 | } | |
301 | ||
302 | /* Read commands from STREAM. */ | |
303 | void | |
fba45db2 | 304 | read_command_file (FILE *stream) |
c906108c SS |
305 | { |
306 | struct cleanup *cleanups; | |
307 | ||
e41a3b1a | 308 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 309 | instream = stream; |
c5aa993b | 310 | command_loop (); |
c906108c SS |
311 | do_cleanups (cleanups); |
312 | } | |
313 | \f | |
507f3c78 | 314 | void (*pre_init_ui_hook) (void); |
c906108c | 315 | |
e41a3b1a | 316 | #ifdef __MSDOS__ |
70976b65 | 317 | static void |
e41a3b1a AC |
318 | do_chdir_cleanup (void *old_dir) |
319 | { | |
320 | chdir (old_dir); | |
b8c9b27d | 321 | xfree (old_dir); |
e41a3b1a AC |
322 | } |
323 | #endif | |
324 | ||
028d0ed5 | 325 | struct cleanup * |
4e5d721f DE |
326 | prepare_execute_command (void) |
327 | { | |
028d0ed5 TJB |
328 | struct value *mark; |
329 | struct cleanup *cleanup; | |
330 | ||
331 | mark = value_mark (); | |
332 | cleanup = make_cleanup_value_free_to_mark (mark); | |
4e5d721f | 333 | |
371d5dec MS |
334 | /* With multiple threads running while the one we're examining is |
335 | stopped, the dcache can get stale without us being able to detect | |
336 | it. For the duration of the command, though, use the dcache to | |
337 | help things like backtrace. */ | |
4e5d721f DE |
338 | if (non_stop) |
339 | target_dcache_invalidate (); | |
028d0ed5 TJB |
340 | |
341 | return cleanup; | |
4e5d721f DE |
342 | } |
343 | ||
77cce10f PA |
344 | /* Tell the user if the language has changed (except first time) after |
345 | executing a command. */ | |
346 | ||
347 | void | |
348 | check_frame_language_change (void) | |
349 | { | |
350 | static int warned = 0; | |
351 | ||
352 | /* First make sure that a new frame has been selected, in case the | |
353 | command or the hooks changed the program state. */ | |
354 | deprecated_safe_get_selected_frame (); | |
355 | if (current_language != expected_language) | |
356 | { | |
357 | if (language_mode == language_mode_auto && info_verbose) | |
358 | { | |
359 | language_info (1); /* Print what changed. */ | |
360 | } | |
361 | warned = 0; | |
362 | } | |
363 | ||
364 | /* Warn the user if the working language does not match the language | |
365 | of the current frame. Only warn the user if we are actually | |
366 | running the program, i.e. there is a stack. */ | |
367 | /* FIXME: This should be cacheing the frame and only running when | |
368 | the frame changes. */ | |
369 | ||
370 | if (has_stack_frames ()) | |
371 | { | |
372 | enum language flang; | |
373 | ||
374 | flang = get_frame_language (); | |
375 | if (!warned | |
376 | && flang != language_unknown | |
377 | && flang != current_language->la_language) | |
378 | { | |
379 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
380 | warned = 1; | |
381 | } | |
382 | } | |
383 | } | |
384 | ||
648bf667 | 385 | /* Execute the line P as a command, in the current user context. |
d318976c | 386 | Pass FROM_TTY as second argument to the defining function. */ |
c906108c | 387 | |
d318976c FN |
388 | void |
389 | execute_command (char *p, int from_tty) | |
c906108c | 390 | { |
353d1d73 | 391 | struct cleanup *cleanup_if_error, *cleanup; |
52f0bd74 | 392 | struct cmd_list_element *c; |
d318976c | 393 | char *line; |
4e5d721f | 394 | |
353d1d73 | 395 | cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
028d0ed5 | 396 | cleanup = prepare_execute_command (); |
c906108c | 397 | |
d318976c FN |
398 | /* Force cleanup of any alloca areas if using C alloca instead of |
399 | a builtin alloca. */ | |
400 | alloca (0); | |
c906108c | 401 | |
d318976c FN |
402 | /* This can happen when command_line_input hits end of file. */ |
403 | if (p == NULL) | |
5fe41fbf TT |
404 | { |
405 | do_cleanups (cleanup); | |
5ae85e44 | 406 | discard_cleanups (cleanup_if_error); |
5fe41fbf TT |
407 | return; |
408 | } | |
c906108c | 409 | |
49d03eab | 410 | target_log_command (p); |
8b93c638 | 411 | |
d318976c FN |
412 | while (*p == ' ' || *p == '\t') |
413 | p++; | |
414 | if (*p) | |
8b93c638 | 415 | { |
6f937416 | 416 | const char *cmd = p; |
d318976c FN |
417 | char *arg; |
418 | line = p; | |
8b93c638 | 419 | |
16026cd7 AS |
420 | /* If trace-commands is set then this will print this command. */ |
421 | print_command_trace (p); | |
422 | ||
6f937416 PA |
423 | c = lookup_cmd (&cmd, cmdlist, "", 0, 1); |
424 | p = (char *) cmd; | |
8b93c638 | 425 | |
d318976c FN |
426 | /* Pass null arg rather than an empty one. */ |
427 | arg = *p ? p : 0; | |
8b93c638 | 428 | |
9f60d481 AC |
429 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
430 | while the is_complete_command(cfunc) test is just plain | |
431 | bogus. They should both be replaced by a test of the form | |
432 | c->strip_trailing_white_space_p. */ | |
433 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
434 | can't be replaced with func. This is because it is the | |
435 | cfunc, and not the func, that has the value that the | |
436 | is_complete_command hack is testing for. */ | |
437 | /* Clear off trailing whitespace, except for set and complete | |
438 | command. */ | |
d318976c FN |
439 | if (arg |
440 | && c->type != set_cmd | |
bbaca940 | 441 | && !is_complete_command (c)) |
8b93c638 | 442 | { |
d318976c FN |
443 | p = arg + strlen (arg) - 1; |
444 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
445 | p--; | |
446 | *(p + 1) = '\0'; | |
8b93c638 JM |
447 | } |
448 | ||
371d5dec | 449 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 450 | execute_cmd_pre_hook (c); |
c906108c | 451 | |
d318976c | 452 | if (c->flags & DEPRECATED_WARN_USER) |
6f937416 | 453 | deprecated_cmd_warning (line); |
c906108c | 454 | |
7d74f244 DE |
455 | /* c->user_commands would be NULL in the case of a python command. */ |
456 | if (c->class == class_user && c->user_commands) | |
d318976c | 457 | execute_user_command (c, arg); |
5b9afe8a YQ |
458 | else if (c->type == set_cmd) |
459 | do_set_command (arg, from_tty, c); | |
460 | else if (c->type == show_cmd) | |
461 | do_show_command (arg, from_tty, c); | |
f436dd25 | 462 | else if (!cmd_func_p (c)) |
8a3fe4f8 | 463 | error (_("That is not a command, just a help topic.")); |
9a4105ab | 464 | else if (deprecated_call_command_hook) |
050a2e1d | 465 | deprecated_call_command_hook (c, arg, from_tty); |
d318976c | 466 | else |
050a2e1d | 467 | cmd_func (c, arg, from_tty); |
b4a14fd0 PA |
468 | |
469 | /* If the interpreter is in sync mode (we're running a user | |
470 | command's list, running command hooks or similars), and we | |
471 | just ran a synchronous command that started the target, wait | |
472 | for that command to end. */ | |
0f641c01 | 473 | if (!interpreter_async && sync_execution) |
b4a14fd0 PA |
474 | { |
475 | while (gdb_do_one_event () >= 0) | |
476 | if (!sync_execution) | |
477 | break; | |
478 | } | |
479 | ||
371d5dec | 480 | /* If this command has been post-hooked, run the hook last. */ |
5913bcb0 | 481 | execute_cmd_post_hook (c); |
c906108c | 482 | |
c906108c SS |
483 | } |
484 | ||
77cce10f | 485 | check_frame_language_change (); |
028d0ed5 | 486 | |
353d1d73 JK |
487 | do_cleanups (cleanup); |
488 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
489 | } |
490 | ||
5da1313b JK |
491 | /* Run execute_command for P and FROM_TTY. Capture its output into the |
492 | returned string, do not display it to the screen. BATCH_FLAG will be | |
493 | temporarily set to true. */ | |
494 | ||
495 | char * | |
496 | execute_command_to_string (char *p, int from_tty) | |
497 | { | |
498 | struct ui_file *str_file; | |
499 | struct cleanup *cleanup; | |
500 | char *retval; | |
501 | ||
502 | /* GDB_STDOUT should be better already restored during these | |
503 | restoration callbacks. */ | |
504 | cleanup = set_batch_flag_and_make_cleanup_restore_page_info (); | |
505 | ||
b4a14fd0 PA |
506 | make_cleanup_restore_integer (&interpreter_async); |
507 | interpreter_async = 0; | |
508 | ||
5da1313b JK |
509 | str_file = mem_fileopen (); |
510 | ||
8d4d924b | 511 | make_cleanup_ui_file_delete (str_file); |
5da1313b JK |
512 | make_cleanup_restore_ui_file (&gdb_stdout); |
513 | make_cleanup_restore_ui_file (&gdb_stderr); | |
8d4d924b JK |
514 | make_cleanup_restore_ui_file (&gdb_stdlog); |
515 | make_cleanup_restore_ui_file (&gdb_stdtarg); | |
516 | make_cleanup_restore_ui_file (&gdb_stdtargerr); | |
517 | ||
79a45e25 | 518 | if (ui_out_redirect (current_uiout, str_file) < 0) |
8d4d924b JK |
519 | warning (_("Current output protocol does not support redirection")); |
520 | else | |
79a45e25 | 521 | make_cleanup_ui_out_redirect_pop (current_uiout); |
5da1313b JK |
522 | |
523 | gdb_stdout = str_file; | |
524 | gdb_stderr = str_file; | |
8d4d924b JK |
525 | gdb_stdlog = str_file; |
526 | gdb_stdtarg = str_file; | |
527 | gdb_stdtargerr = str_file; | |
5da1313b JK |
528 | |
529 | execute_command (p, from_tty); | |
530 | ||
531 | retval = ui_file_xstrdup (str_file, NULL); | |
532 | ||
533 | do_cleanups (cleanup); | |
534 | ||
535 | return retval; | |
536 | } | |
537 | ||
d318976c FN |
538 | /* Read commands from `instream' and execute them |
539 | until end of file or error reading instream. */ | |
c906108c | 540 | |
d318976c FN |
541 | void |
542 | command_loop (void) | |
c906108c | 543 | { |
d318976c FN |
544 | struct cleanup *old_chain; |
545 | char *command; | |
546 | int stdin_is_tty = ISATTY (stdin); | |
c5aa993b | 547 | |
d318976c FN |
548 | while (instream && !feof (instream)) |
549 | { | |
d318976c | 550 | if (window_hook && instream == stdin) |
ab821bc6 | 551 | (*window_hook) (instream, get_prompt ()); |
c906108c | 552 | |
522002f9 | 553 | clear_quit_flag (); |
d318976c FN |
554 | if (instream == stdin && stdin_is_tty) |
555 | reinitialize_more_filter (); | |
556 | old_chain = make_cleanup (null_cleanup, 0); | |
c906108c | 557 | |
c378eb4e | 558 | /* Get a command-line. This calls the readline package. */ |
d318976c | 559 | command = command_line_input (instream == stdin ? |
ab821bc6 | 560 | get_prompt () : (char *) NULL, |
d318976c | 561 | instream == stdin, "prompt"); |
d318976c | 562 | if (command == 0) |
5fe41fbf TT |
563 | { |
564 | do_cleanups (old_chain); | |
565 | return; | |
566 | } | |
c906108c | 567 | |
0f3bb72e | 568 | make_command_stats_cleanup (1); |
9e0b60a8 | 569 | |
d318976c | 570 | execute_command (command, instream == stdin); |
347bddb7 PA |
571 | |
572 | /* Do any commands attached to breakpoint we are stopped at. */ | |
573 | bpstat_do_actions (); | |
574 | ||
d318976c | 575 | do_cleanups (old_chain); |
9e0b60a8 | 576 | } |
9e0b60a8 | 577 | } |
d318976c | 578 | \f |
47a80e90 TT |
579 | /* When nonzero, cause dont_repeat to do nothing. This should only be |
580 | set via prevent_dont_repeat. */ | |
581 | ||
582 | static int suppress_dont_repeat = 0; | |
583 | ||
d318976c | 584 | /* Commands call this if they do not want to be repeated by null lines. */ |
9e0b60a8 | 585 | |
d318976c FN |
586 | void |
587 | dont_repeat (void) | |
9e0b60a8 | 588 | { |
47a80e90 | 589 | if (suppress_dont_repeat || server_command) |
d318976c | 590 | return; |
9e0b60a8 | 591 | |
d318976c | 592 | /* If we aren't reading from standard input, we are saving the last |
371d5dec MS |
593 | thing read from stdin in line and don't want to delete it. Null |
594 | lines won't repeat here in any case. */ | |
d318976c | 595 | if (instream == stdin) |
dc7eb48e | 596 | *saved_command_line = 0; |
9e0b60a8 | 597 | } |
47a80e90 TT |
598 | |
599 | /* Prevent dont_repeat from working, and return a cleanup that | |
600 | restores the previous state. */ | |
601 | ||
602 | struct cleanup * | |
603 | prevent_dont_repeat (void) | |
604 | { | |
605 | struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat); | |
606 | ||
607 | suppress_dont_repeat = 1; | |
608 | return result; | |
609 | } | |
610 | ||
d318976c FN |
611 | \f |
612 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 613 | |
d318976c FN |
614 | It prints PROMPT_ARG once at the start. |
615 | Action is compatible with "readline", e.g. space for the result is | |
616 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 617 | |
d318976c FN |
618 | A NULL return means end of file. */ |
619 | char * | |
620 | gdb_readline (char *prompt_arg) | |
9e0b60a8 | 621 | { |
d318976c FN |
622 | int c; |
623 | char *result; | |
624 | int input_index = 0; | |
625 | int result_size = 80; | |
9e0b60a8 | 626 | |
d318976c | 627 | if (prompt_arg) |
9e0b60a8 | 628 | { |
d318976c FN |
629 | /* Don't use a _filtered function here. It causes the assumed |
630 | character position to be off, since the newline we read from | |
631 | the user is not accounted for. */ | |
632 | fputs_unfiltered (prompt_arg, gdb_stdout); | |
9e0b60a8 JM |
633 | gdb_flush (gdb_stdout); |
634 | } | |
635 | ||
d318976c | 636 | result = (char *) xmalloc (result_size); |
9e0b60a8 JM |
637 | |
638 | while (1) | |
639 | { | |
d318976c FN |
640 | /* Read from stdin if we are executing a user defined command. |
641 | This is the right thing for prompt_for_continue, at least. */ | |
642 | c = fgetc (instream ? instream : stdin); | |
9e0b60a8 | 643 | |
d318976c | 644 | if (c == EOF) |
9e0b60a8 | 645 | { |
d318976c FN |
646 | if (input_index > 0) |
647 | /* The last line does not end with a newline. Return it, and | |
648 | if we are called again fgetc will still return EOF and | |
649 | we'll return NULL then. */ | |
9e0b60a8 | 650 | break; |
b8c9b27d | 651 | xfree (result); |
d318976c | 652 | return NULL; |
9e0b60a8 | 653 | } |
c5aa993b | 654 | |
d318976c | 655 | if (c == '\n') |
9e0b60a8 | 656 | { |
d318976c FN |
657 | if (input_index > 0 && result[input_index - 1] == '\r') |
658 | input_index--; | |
659 | break; | |
9e0b60a8 | 660 | } |
9e0b60a8 | 661 | |
d318976c FN |
662 | result[input_index++] = c; |
663 | while (input_index >= result_size) | |
9e0b60a8 | 664 | { |
d318976c FN |
665 | result_size *= 2; |
666 | result = (char *) xrealloc (result, result_size); | |
9e0b60a8 | 667 | } |
9e0b60a8 JM |
668 | } |
669 | ||
d318976c FN |
670 | result[input_index++] = '\0'; |
671 | return result; | |
9e0b60a8 JM |
672 | } |
673 | ||
d318976c FN |
674 | /* Variables which control command line editing and history |
675 | substitution. These variables are given default values at the end | |
676 | of this file. */ | |
677 | static int command_editing_p; | |
920d2a44 | 678 | |
d318976c FN |
679 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
680 | gdb to use the event loop as the default command loop and we merge | |
c378eb4e | 681 | event-top.c into this file, top.c. */ |
920d2a44 | 682 | |
d318976c | 683 | /* static */ int history_expansion_p; |
920d2a44 | 684 | |
d318976c | 685 | static int write_history_p; |
920d2a44 AC |
686 | static void |
687 | show_write_history_p (struct ui_file *file, int from_tty, | |
688 | struct cmd_list_element *c, const char *value) | |
689 | { | |
690 | fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"), | |
691 | value); | |
692 | } | |
693 | ||
840a9a1f PA |
694 | /* The variable associated with the "set/show history size" |
695 | command. */ | |
696 | static unsigned int history_size_setshow_var; | |
697 | ||
920d2a44 AC |
698 | static void |
699 | show_history_size (struct ui_file *file, int from_tty, | |
700 | struct cmd_list_element *c, const char *value) | |
701 | { | |
702 | fprintf_filtered (file, _("The size of the command history is %s.\n"), | |
703 | value); | |
704 | } | |
705 | ||
d318976c | 706 | static char *history_filename; |
920d2a44 AC |
707 | static void |
708 | show_history_filename (struct ui_file *file, int from_tty, | |
709 | struct cmd_list_element *c, const char *value) | |
710 | { | |
3e43a32a MS |
711 | fprintf_filtered (file, _("The filename in which to record " |
712 | "the command history is \"%s\".\n"), | |
920d2a44 AC |
713 | value); |
714 | } | |
9e0b60a8 | 715 | |
b4f5539f | 716 | /* This is like readline(), but it has some gdb-specific behavior. |
2e03ee74 | 717 | gdb may want readline in both the synchronous and async modes during |
b4f5539f TT |
718 | a single gdb invocation. At the ordinary top-level prompt we might |
719 | be using the async readline. That means we can't use | |
720 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
721 | However, for a secondary prompt (" >", such as occurs during a | |
2e03ee74 DJ |
722 | `define'), gdb wants a synchronous response. |
723 | ||
724 | We used to call readline() directly, running it in synchronous | |
725 | mode. But mixing modes this way is not supported, and as of | |
726 | readline 5.x it no longer works; the arrow keys come unbound during | |
727 | the synchronous call. So we make a nested call into the event | |
728 | loop. That's what gdb_readline_wrapper is for. */ | |
729 | ||
730 | /* A flag set as soon as gdb_readline_wrapper_line is called; we can't | |
731 | rely on gdb_readline_wrapper_result, which might still be NULL if | |
732 | the user types Control-D for EOF. */ | |
733 | static int gdb_readline_wrapper_done; | |
734 | ||
735 | /* The result of the current call to gdb_readline_wrapper, once a newline | |
736 | is seen. */ | |
737 | static char *gdb_readline_wrapper_result; | |
738 | ||
739 | /* Any intercepted hook. Operate-and-get-next sets this, expecting it | |
740 | to be called after the newline is processed (which will redisplay | |
741 | the prompt). But in gdb_readline_wrapper we will not get a new | |
742 | prompt until the next call, or until we return to the event loop. | |
743 | So we disable this hook around the newline and restore it before we | |
744 | return. */ | |
745 | static void (*saved_after_char_processing_hook) (void); | |
746 | ||
747 | /* This function is called when readline has seen a complete line of | |
748 | text. */ | |
749 | ||
750 | static void | |
751 | gdb_readline_wrapper_line (char *line) | |
752 | { | |
753 | gdb_assert (!gdb_readline_wrapper_done); | |
754 | gdb_readline_wrapper_result = line; | |
755 | gdb_readline_wrapper_done = 1; | |
756 | ||
757 | /* Prevent operate-and-get-next from acting too early. */ | |
758 | saved_after_char_processing_hook = after_char_processing_hook; | |
759 | after_char_processing_hook = NULL; | |
1b05479a DJ |
760 | |
761 | /* Prevent parts of the prompt from being redisplayed if annotations | |
762 | are enabled, and readline's state getting out of sync. */ | |
763 | if (async_command_editing_p) | |
764 | rl_callback_handler_remove (); | |
2e03ee74 DJ |
765 | } |
766 | ||
767 | struct gdb_readline_wrapper_cleanup | |
768 | { | |
769 | void (*handler_orig) (char *); | |
2e03ee74 DJ |
770 | int already_prompted_orig; |
771 | }; | |
772 | ||
773 | static void | |
774 | gdb_readline_wrapper_cleanup (void *arg) | |
775 | { | |
776 | struct gdb_readline_wrapper_cleanup *cleanup = arg; | |
777 | ||
2e03ee74 | 778 | rl_already_prompted = cleanup->already_prompted_orig; |
2e03ee74 DJ |
779 | |
780 | gdb_assert (input_handler == gdb_readline_wrapper_line); | |
781 | input_handler = cleanup->handler_orig; | |
782 | gdb_readline_wrapper_result = NULL; | |
783 | gdb_readline_wrapper_done = 0; | |
784 | ||
785 | after_char_processing_hook = saved_after_char_processing_hook; | |
786 | saved_after_char_processing_hook = NULL; | |
787 | ||
788 | xfree (cleanup); | |
789 | } | |
790 | ||
b4f5539f TT |
791 | char * |
792 | gdb_readline_wrapper (char *prompt) | |
793 | { | |
2e03ee74 DJ |
794 | struct cleanup *back_to; |
795 | struct gdb_readline_wrapper_cleanup *cleanup; | |
796 | char *retval; | |
797 | ||
798 | cleanup = xmalloc (sizeof (*cleanup)); | |
799 | cleanup->handler_orig = input_handler; | |
800 | input_handler = gdb_readline_wrapper_line; | |
801 | ||
2e03ee74 DJ |
802 | cleanup->already_prompted_orig = rl_already_prompted; |
803 | ||
804 | back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup); | |
805 | ||
806 | /* Display our prompt and prevent double prompt display. */ | |
1b05479a | 807 | display_gdb_prompt (prompt); |
2e03ee74 DJ |
808 | rl_already_prompted = 1; |
809 | ||
362646f5 | 810 | if (after_char_processing_hook) |
2e03ee74 DJ |
811 | (*after_char_processing_hook) (); |
812 | gdb_assert (after_char_processing_hook == NULL); | |
813 | ||
e0dd0826 | 814 | while (gdb_do_one_event () >= 0) |
2e03ee74 DJ |
815 | if (gdb_readline_wrapper_done) |
816 | break; | |
b4f5539f | 817 | |
2e03ee74 DJ |
818 | retval = gdb_readline_wrapper_result; |
819 | do_cleanups (back_to); | |
820 | return retval; | |
b4f5539f TT |
821 | } |
822 | ||
9e0b60a8 | 823 | \f |
467d8519 TT |
824 | /* The current saved history number from operate-and-get-next. |
825 | This is -1 if not valid. */ | |
826 | static int operate_saved_history = -1; | |
827 | ||
828 | /* This is put on the appropriate hook and helps operate-and-get-next | |
829 | do its work. */ | |
b9362cc7 | 830 | static void |
5ae5f592 | 831 | gdb_rl_operate_and_get_next_completion (void) |
467d8519 TT |
832 | { |
833 | int delta = where_history () - operate_saved_history; | |
5d502164 | 834 | |
467d8519 TT |
835 | /* The `key' argument to rl_get_previous_history is ignored. */ |
836 | rl_get_previous_history (delta, 0); | |
837 | operate_saved_history = -1; | |
838 | ||
839 | /* readline doesn't automatically update the display for us. */ | |
12f4afab | 840 | rl_redisplay (); |
467d8519 TT |
841 | |
842 | after_char_processing_hook = NULL; | |
843 | rl_pre_input_hook = NULL; | |
844 | } | |
845 | ||
846 | /* This is a gdb-local readline command handler. It accepts the | |
847 | current command line (like RET does) and, if this command was taken | |
848 | from the history, arranges for the next command in the history to | |
849 | appear on the command line when the prompt returns. | |
850 | We ignore the arguments. */ | |
851 | static int | |
852 | gdb_rl_operate_and_get_next (int count, int key) | |
853 | { | |
b5686e99 MK |
854 | int where; |
855 | ||
362646f5 AC |
856 | /* Use the async hook. */ |
857 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
467d8519 | 858 | |
b5686e99 MK |
859 | /* Find the current line, and find the next line to use. */ |
860 | where = where_history(); | |
861 | ||
1fb2e2b5 PA |
862 | if ((history_is_stifled () && (history_length >= history_max_entries)) |
863 | || (where >= history_length - 1)) | |
b5686e99 MK |
864 | operate_saved_history = where; |
865 | else | |
866 | operate_saved_history = where + 1; | |
867 | ||
467d8519 TT |
868 | return rl_newline (1, key); |
869 | } | |
870 | \f | |
d318976c FN |
871 | /* Read one line from the command input stream `instream' |
872 | into the local static buffer `linebuffer' (whose current length | |
873 | is `linelength'). | |
874 | The buffer is made bigger as necessary. | |
875 | Returns the address of the start of the line. | |
9e0b60a8 | 876 | |
d318976c | 877 | NULL is returned for end of file. |
9e0b60a8 | 878 | |
d318976c FN |
879 | *If* the instream == stdin & stdin is a terminal, the line read |
880 | is copied into the file line saver (global var char *line, | |
881 | length linesize) so that it can be duplicated. | |
9e0b60a8 | 882 | |
d318976c FN |
883 | This routine either uses fancy command line editing or |
884 | simple input as the user has requested. */ | |
10689f25 | 885 | |
d318976c FN |
886 | char * |
887 | command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) | |
9e0b60a8 | 888 | { |
d318976c FN |
889 | static char *linebuffer = 0; |
890 | static unsigned linelength = 0; | |
52f0bd74 | 891 | char *p; |
d318976c FN |
892 | char *p1; |
893 | char *rl; | |
894 | char *local_prompt = prompt_arg; | |
895 | char *nline; | |
896 | char got_eof = 0; | |
897 | ||
898 | /* The annotation suffix must be non-NULL. */ | |
899 | if (annotation_suffix == NULL) | |
900 | annotation_suffix = ""; | |
9e0b60a8 | 901 | |
d318976c FN |
902 | if (annotation_level > 1 && instream == stdin) |
903 | { | |
904 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
905 | + strlen (annotation_suffix) + 40); | |
906 | if (prompt_arg == NULL) | |
907 | local_prompt[0] = '\0'; | |
908 | else | |
909 | strcpy (local_prompt, prompt_arg); | |
910 | strcat (local_prompt, "\n\032\032"); | |
911 | strcat (local_prompt, annotation_suffix); | |
912 | strcat (local_prompt, "\n"); | |
913 | } | |
9e0b60a8 | 914 | |
d318976c | 915 | if (linebuffer == 0) |
9e0b60a8 | 916 | { |
d318976c FN |
917 | linelength = 80; |
918 | linebuffer = (char *) xmalloc (linelength); | |
9e0b60a8 | 919 | } |
9e0b60a8 | 920 | |
d318976c | 921 | p = linebuffer; |
9e0b60a8 | 922 | |
d318976c FN |
923 | /* Control-C quits instantly if typed while in this loop |
924 | since it should not wait until the user types a newline. */ | |
925 | immediate_quit++; | |
522002f9 | 926 | QUIT; |
d318976c FN |
927 | #ifdef STOP_SIGNAL |
928 | if (job_control) | |
362646f5 | 929 | signal (STOP_SIGNAL, handle_stop_sig); |
d318976c FN |
930 | #endif |
931 | ||
932 | while (1) | |
9e0b60a8 | 933 | { |
371d5dec MS |
934 | /* Make sure that all output has been output. Some machines may |
935 | let you get away with leaving out some of the gdb_flush, but | |
936 | not all. */ | |
d318976c FN |
937 | wrap_here (""); |
938 | gdb_flush (gdb_stdout); | |
939 | gdb_flush (gdb_stderr); | |
940 | ||
941 | if (source_file_name != NULL) | |
637537d0 | 942 | ++source_line_number; |
d318976c FN |
943 | |
944 | if (annotation_level > 1 && instream == stdin) | |
945 | { | |
306d9ac5 DC |
946 | puts_unfiltered ("\n\032\032pre-"); |
947 | puts_unfiltered (annotation_suffix); | |
948 | puts_unfiltered ("\n"); | |
d318976c FN |
949 | } |
950 | ||
951 | /* Don't use fancy stuff if not talking to stdin. */ | |
698ba934 | 952 | if (deprecated_readline_hook && input_from_terminal_p ()) |
d318976c | 953 | { |
9a4105ab | 954 | rl = (*deprecated_readline_hook) (local_prompt); |
d318976c | 955 | } |
698ba934 | 956 | else if (command_editing_p && input_from_terminal_p ()) |
d318976c | 957 | { |
b4f5539f | 958 | rl = gdb_readline_wrapper (local_prompt); |
d318976c | 959 | } |
9e0b60a8 | 960 | else |
d318976c FN |
961 | { |
962 | rl = gdb_readline (local_prompt); | |
963 | } | |
9e0b60a8 | 964 | |
d318976c FN |
965 | if (annotation_level > 1 && instream == stdin) |
966 | { | |
306d9ac5 DC |
967 | puts_unfiltered ("\n\032\032post-"); |
968 | puts_unfiltered (annotation_suffix); | |
969 | puts_unfiltered ("\n"); | |
d318976c | 970 | } |
9e0b60a8 | 971 | |
d318976c | 972 | if (!rl || rl == (char *) EOF) |
9e0b60a8 | 973 | { |
d318976c FN |
974 | got_eof = 1; |
975 | break; | |
9e0b60a8 | 976 | } |
d318976c FN |
977 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
978 | { | |
979 | linelength = strlen (rl) + 1 + (p - linebuffer); | |
980 | nline = (char *) xrealloc (linebuffer, linelength); | |
981 | p += nline - linebuffer; | |
982 | linebuffer = nline; | |
983 | } | |
984 | p1 = rl; | |
985 | /* Copy line. Don't copy null at end. (Leaves line alone | |
371d5dec | 986 | if this was just a newline). */ |
d318976c FN |
987 | while (*p1) |
988 | *p++ = *p1++; | |
9e0b60a8 | 989 | |
b8c9b27d | 990 | xfree (rl); /* Allocated in readline. */ |
9e0b60a8 | 991 | |
d318976c FN |
992 | if (p == linebuffer || *(p - 1) != '\\') |
993 | break; | |
9e0b60a8 | 994 | |
d318976c FN |
995 | p--; /* Put on top of '\'. */ |
996 | local_prompt = (char *) 0; | |
997 | } | |
9e0b60a8 | 998 | |
d318976c FN |
999 | #ifdef STOP_SIGNAL |
1000 | if (job_control) | |
1001 | signal (STOP_SIGNAL, SIG_DFL); | |
1002 | #endif | |
1003 | immediate_quit--; | |
9e0b60a8 | 1004 | |
d318976c FN |
1005 | if (got_eof) |
1006 | return NULL; | |
9e0b60a8 | 1007 | |
d318976c FN |
1008 | #define SERVER_COMMAND_LENGTH 7 |
1009 | server_command = | |
1010 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
bf896cb0 | 1011 | && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0; |
d318976c | 1012 | if (server_command) |
9e0b60a8 | 1013 | { |
d318976c FN |
1014 | /* Note that we don't set `line'. Between this and the check in |
1015 | dont_repeat, this insures that repeating will still do the | |
1016 | right thing. */ | |
1017 | *p = '\0'; | |
1018 | return linebuffer + SERVER_COMMAND_LENGTH; | |
9e0b60a8 | 1019 | } |
9e0b60a8 | 1020 | |
d318976c FN |
1021 | /* Do history expansion if that is wished. */ |
1022 | if (history_expansion_p && instream == stdin | |
1023 | && ISATTY (instream)) | |
1024 | { | |
1025 | char *history_value; | |
1026 | int expanded; | |
9e0b60a8 | 1027 | |
d318976c FN |
1028 | *p = '\0'; /* Insert null now. */ |
1029 | expanded = history_expand (linebuffer, &history_value); | |
1030 | if (expanded) | |
1031 | { | |
1032 | /* Print the changes. */ | |
1033 | printf_unfiltered ("%s\n", history_value); | |
9e0b60a8 | 1034 | |
d318976c FN |
1035 | /* If there was an error, call this function again. */ |
1036 | if (expanded < 0) | |
1037 | { | |
b8c9b27d | 1038 | xfree (history_value); |
3e43a32a MS |
1039 | return command_line_input (prompt_arg, repeat, |
1040 | annotation_suffix); | |
d318976c FN |
1041 | } |
1042 | if (strlen (history_value) > linelength) | |
1043 | { | |
1044 | linelength = strlen (history_value) + 1; | |
1045 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1046 | } | |
1047 | strcpy (linebuffer, history_value); | |
1048 | p = linebuffer + strlen (linebuffer); | |
d318976c | 1049 | } |
91d2803c | 1050 | xfree (history_value); |
d318976c | 1051 | } |
9e0b60a8 | 1052 | |
371d5dec MS |
1053 | /* If we just got an empty line, and that is supposed to repeat the |
1054 | previous command, return the value in the global buffer. */ | |
d318976c | 1055 | if (repeat && p == linebuffer) |
dc7eb48e | 1056 | return saved_command_line; |
d318976c FN |
1057 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); |
1058 | if (repeat && !*p1) | |
dc7eb48e | 1059 | return saved_command_line; |
9e0b60a8 | 1060 | |
d318976c | 1061 | *p = 0; |
9e0b60a8 | 1062 | |
d318976c FN |
1063 | /* Add line to history if appropriate. */ |
1064 | if (instream == stdin | |
1065 | && ISATTY (stdin) && *linebuffer) | |
1066 | add_history (linebuffer); | |
9e0b60a8 | 1067 | |
d318976c FN |
1068 | /* Note: lines consisting solely of comments are added to the command |
1069 | history. This is useful when you type a command, and then | |
1070 | realize you don't want to execute it quite yet. You can comment | |
1071 | out the command and then later fetch it from the value history | |
1072 | and remove the '#'. The kill ring is probably better, but some | |
1073 | people are in the habit of commenting things out. */ | |
1074 | if (*p1 == '#') | |
371d5dec | 1075 | *p1 = '\0'; /* Found a comment. */ |
9e0b60a8 | 1076 | |
d318976c FN |
1077 | /* Save into global buffer if appropriate. */ |
1078 | if (repeat) | |
1079 | { | |
dc7eb48e | 1080 | if (linelength > saved_command_line_size) |
d318976c | 1081 | { |
dc7eb48e PA |
1082 | saved_command_line = xrealloc (saved_command_line, linelength); |
1083 | saved_command_line_size = linelength; | |
d318976c | 1084 | } |
dc7eb48e PA |
1085 | strcpy (saved_command_line, linebuffer); |
1086 | return saved_command_line; | |
d318976c | 1087 | } |
9e0b60a8 | 1088 | |
d318976c | 1089 | return linebuffer; |
9e0b60a8 JM |
1090 | } |
1091 | \f | |
371d5dec | 1092 | /* Print the GDB banner. */ |
9e0b60a8 | 1093 | void |
fba45db2 | 1094 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1095 | { |
1096 | /* From GNU coding standards, first line is meant to be easy for a | |
1097 | program to parse, and is just canonical program name and version | |
371d5dec | 1098 | number, which starts after last space. */ |
9e0b60a8 | 1099 | |
c16158bc | 1100 | fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version); |
9e0b60a8 | 1101 | |
371d5dec | 1102 | /* Second line is a copyright notice. */ |
9e0b60a8 | 1103 | |
3e43a32a | 1104 | fprintf_filtered (stream, |
b9786c74 | 1105 | "Copyright (C) 2013 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1106 | |
1107 | /* Following the copyright is a brief statement that the program is | |
1108 | free software, that users are free to copy and change it on | |
1109 | certain conditions, that it is covered by the GNU GPL, and that | |
371d5dec | 1110 | there is no warranty. */ |
9e0b60a8 JM |
1111 | |
1112 | fprintf_filtered (stream, "\ | |
3e43a32a MS |
1113 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\ |
1114 | \nThis is free software: you are free to change and redistribute it.\n\ | |
0b93d57c | 1115 | There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\ |
b8533aec | 1116 | and \"show warranty\" for details.\n"); |
9e0b60a8 | 1117 | |
371d5dec | 1118 | /* After the required info we print the configuration information. */ |
9e0b60a8 JM |
1119 | |
1120 | fprintf_filtered (stream, "This GDB was configured as \""); | |
6314a349 | 1121 | if (strcmp (host_name, target_name) != 0) |
9e0b60a8 | 1122 | { |
3e43a32a MS |
1123 | fprintf_filtered (stream, "--host=%s --target=%s", |
1124 | host_name, target_name); | |
9e0b60a8 JM |
1125 | } |
1126 | else | |
1127 | { | |
1128 | fprintf_filtered (stream, "%s", host_name); | |
1129 | } | |
6eaaf48b EZ |
1130 | fprintf_filtered (stream, "\".\n\ |
1131 | Type \"show configuration\" for configuration details."); | |
c16158bc JM |
1132 | |
1133 | if (REPORT_BUGS_TO[0]) | |
1134 | { | |
6eaaf48b | 1135 | fprintf_filtered (stream, |
c16158bc | 1136 | _("\nFor bug reporting instructions, please see:\n")); |
1cf55f60 | 1137 | fprintf_filtered (stream, "%s.\n", REPORT_BUGS_TO); |
c16158bc | 1138 | } |
1cf55f60 PM |
1139 | fprintf_filtered (stream, |
1140 | _("Find the GDB manual and other documentation \ | |
1141 | resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n")); | |
1142 | fprintf_filtered (stream, _("For help, type \"help\".\n")); | |
1143 | fprintf_filtered (stream, _("Type \"apropos word\" to search for \ | |
af4c453a | 1144 | commands related to \"word\".")); |
9e0b60a8 | 1145 | } |
6eaaf48b EZ |
1146 | |
1147 | /* Print the details of GDB build-time configuration. */ | |
1148 | void | |
1149 | print_gdb_configuration (struct ui_file *stream) | |
1150 | { | |
1151 | fprintf_filtered (stream, _("\ | |
1152 | This GDB was configured as follows:\n\ | |
1153 | configure --host=%s --target=%s\n\ | |
1154 | "), host_name, target_name); | |
1155 | fprintf_filtered (stream, _("\ | |
1156 | --with-auto-load-dir=%s\n\ | |
1157 | --with-auto-load-safe-path=%s\n\ | |
1158 | "), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH); | |
1159 | #if HAVE_LIBEXPAT | |
1160 | fprintf_filtered (stream, _("\ | |
1161 | --with-expat\n\ | |
1162 | ")); | |
1163 | #else | |
1164 | fprintf_filtered (stream, _("\ | |
1165 | --without-expat\n\ | |
1166 | ")); | |
1167 | #endif | |
1168 | if (GDB_DATADIR[0]) | |
1169 | fprintf_filtered (stream, _("\ | |
1170 | --with-gdb-datadir=%s%s\n\ | |
1171 | "), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : ""); | |
1172 | #ifdef ICONV_BIN | |
1173 | fprintf_filtered (stream, _("\ | |
1174 | --with-iconv-bin=%s%s\n\ | |
1175 | "), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : ""); | |
1176 | #endif | |
1177 | if (JIT_READER_DIR[0]) | |
1178 | fprintf_filtered (stream, _("\ | |
1179 | --with-jit-reader-dir=%s%s\n\ | |
1180 | "), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : ""); | |
1181 | #if HAVE_LIBUNWIND_IA64_H | |
1182 | fprintf_filtered (stream, _("\ | |
1183 | --with-libunwind-ia64\n\ | |
1184 | ")); | |
1185 | #else | |
1186 | fprintf_filtered (stream, _("\ | |
1187 | --without-libunwind-ia64\n\ | |
1188 | ")); | |
1189 | #endif | |
1190 | #if HAVE_LIBLZMA | |
1191 | fprintf_filtered (stream, _("\ | |
1192 | --with-lzma\n\ | |
1193 | ")); | |
1194 | #else | |
1195 | fprintf_filtered (stream, _("\ | |
1196 | --without-lzma\n\ | |
1197 | ")); | |
1198 | #endif | |
1199 | #ifdef WITH_PYTHON_PATH | |
1200 | fprintf_filtered (stream, _("\ | |
1201 | --with-python=%s%s\n\ | |
1202 | "), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : ""); | |
1203 | #endif | |
1204 | #ifdef RELOC_SRCDIR | |
1205 | fprintf_filtered (stream, _("\ | |
1206 | --with-relocated-sources=%s\n\ | |
1207 | "), RELOC_SRCDIR); | |
1208 | #endif | |
1209 | if (DEBUGDIR[0]) | |
1210 | fprintf_filtered (stream, _("\ | |
1211 | --with-separate-debug-dir=%s%s\n\ | |
1212 | "), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : ""); | |
1213 | if (TARGET_SYSTEM_ROOT[0]) | |
1214 | fprintf_filtered (stream, _("\ | |
1215 | --with-sysroot=%s%s\n\ | |
1216 | "), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : ""); | |
1217 | if (SYSTEM_GDBINIT[0]) | |
1218 | fprintf_filtered (stream, _("\ | |
1219 | --with-system-gdbinit=%s%s\n\ | |
1220 | "), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : ""); | |
1221 | #if HAVE_ZLIB_H | |
1222 | fprintf_filtered (stream, _("\ | |
1223 | --with-zlib\n\ | |
1224 | ")); | |
1225 | #else | |
1226 | fprintf_filtered (stream, _("\ | |
1227 | --without-zlib\n\ | |
1228 | ")); | |
1229 | #endif | |
ab116149 YQ |
1230 | #if HAVE_LIBBABELTRACE |
1231 | fprintf_filtered (stream, _("\ | |
1232 | --with-babeltrace\n\ | |
1233 | ")); | |
1234 | #else | |
1235 | fprintf_filtered (stream, _("\ | |
1236 | --without-babeltrace\n\ | |
1237 | ")); | |
1238 | #endif | |
48d1d6f5 EZ |
1239 | /* We assume "relocatable" will be printed at least once, thus we always |
1240 | print this text. It's a reasonably safe assumption for now. */ | |
1241 | fprintf_filtered (stream, _("\n\ | |
1242 | (\"Relocatable\" means the directory can be moved with the GDB installation\n\ | |
1243 | tree, and GDB will still find it.)\n\ | |
1244 | ")); | |
6eaaf48b | 1245 | } |
9e0b60a8 | 1246 | \f |
95298e72 | 1247 | |
ab821bc6 PA |
1248 | /* The current top level prompt, settable with "set prompt", and/or |
1249 | with the python `gdb.prompt_hook' hook. */ | |
1250 | static char *top_prompt; | |
9e0b60a8 | 1251 | |
ab821bc6 | 1252 | /* Access method for the GDB prompt string. */ |
95298e72 PM |
1253 | |
1254 | char * | |
ab821bc6 | 1255 | get_prompt (void) |
95298e72 | 1256 | { |
ab821bc6 | 1257 | return top_prompt; |
95298e72 PM |
1258 | } |
1259 | ||
ab821bc6 | 1260 | /* Set method for the GDB prompt string. */ |
95298e72 PM |
1261 | |
1262 | void | |
ab821bc6 | 1263 | set_prompt (const char *s) |
95298e72 | 1264 | { |
ab821bc6 | 1265 | char *p = xstrdup (s); |
95298e72 | 1266 | |
ab821bc6 PA |
1267 | xfree (top_prompt); |
1268 | top_prompt = p; | |
9e0b60a8 | 1269 | } |
9e0b60a8 | 1270 | \f |
c5aa993b | 1271 | |
b0abbc58 | 1272 | struct qt_args |
9e0b60a8 | 1273 | { |
b0abbc58 JJ |
1274 | char *args; |
1275 | int from_tty; | |
1276 | }; | |
9e0b60a8 | 1277 | |
54a012c9 PA |
1278 | /* Callback for iterate_over_inferiors. Kills or detaches the given |
1279 | inferior, depending on how we originally gained control of it. */ | |
1280 | ||
1281 | static int | |
1282 | kill_or_detach (struct inferior *inf, void *args) | |
1283 | { | |
1284 | struct qt_args *qt = args; | |
1285 | struct thread_info *thread; | |
1286 | ||
6c95b8df PA |
1287 | if (inf->pid == 0) |
1288 | return 0; | |
1289 | ||
b8fa0bfa PA |
1290 | thread = any_thread_of_process (inf->pid); |
1291 | if (thread != NULL) | |
9e0b60a8 | 1292 | { |
54a012c9 | 1293 | switch_to_thread (thread->ptid); |
c35b1492 PA |
1294 | |
1295 | /* Leave core files alone. */ | |
1296 | if (target_has_execution) | |
1297 | { | |
1298 | if (inf->attach_flag) | |
1299 | target_detach (qt->args, qt->from_tty); | |
1300 | else | |
1301 | target_kill (); | |
1302 | } | |
9e0b60a8 JM |
1303 | } |
1304 | ||
54a012c9 PA |
1305 | return 0; |
1306 | } | |
1307 | ||
b8fa0bfa PA |
1308 | /* Callback for iterate_over_inferiors. Prints info about what GDB |
1309 | will do to each inferior on a "quit". ARG points to a struct | |
1310 | ui_out where output is to be collected. */ | |
1311 | ||
1312 | static int | |
1313 | print_inferior_quit_action (struct inferior *inf, void *arg) | |
1314 | { | |
1315 | struct ui_file *stb = arg; | |
1316 | ||
6c95b8df PA |
1317 | if (inf->pid == 0) |
1318 | return 0; | |
1319 | ||
b8fa0bfa PA |
1320 | if (inf->attach_flag) |
1321 | fprintf_filtered (stb, | |
1322 | _("\tInferior %d [%s] will be detached.\n"), inf->num, | |
1323 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1324 | else | |
1325 | fprintf_filtered (stb, | |
1326 | _("\tInferior %d [%s] will be killed.\n"), inf->num, | |
1327 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1328 | ||
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | /* If necessary, make the user confirm that we should quit. Return | |
1333 | non-zero if we should quit, zero if we shouldn't. */ | |
1334 | ||
1335 | int | |
1336 | quit_confirm (void) | |
1337 | { | |
1338 | struct ui_file *stb; | |
1339 | struct cleanup *old_chain; | |
1340 | char *str; | |
1341 | int qr; | |
1342 | ||
1343 | /* Don't even ask if we're only debugging a core file inferior. */ | |
1344 | if (!have_live_inferiors ()) | |
1345 | return 1; | |
1346 | ||
1347 | /* Build the query string as a single string. */ | |
1348 | stb = mem_fileopen (); | |
1349 | old_chain = make_cleanup_ui_file_delete (stb); | |
1350 | ||
5a5d8ead AB |
1351 | fprintf_filtered (stb, _("A debugging session is active.\n\n")); |
1352 | iterate_over_inferiors (print_inferior_quit_action, stb); | |
1353 | fprintf_filtered (stb, _("\nQuit anyway? ")); | |
b8fa0bfa PA |
1354 | |
1355 | str = ui_file_xstrdup (stb, NULL); | |
1356 | make_cleanup (xfree, str); | |
1357 | ||
1358 | qr = query ("%s", str); | |
1359 | do_cleanups (old_chain); | |
1360 | return qr; | |
1361 | } | |
1362 | ||
b0abbc58 JJ |
1363 | /* Quit without asking for confirmation. */ |
1364 | ||
1365 | void | |
1366 | quit_force (char *args, int from_tty) | |
1367 | { | |
1368 | int exit_code = 0; | |
365c70b1 | 1369 | struct qt_args qt; |
2f9d54cf | 1370 | volatile struct gdb_exception ex; |
b0abbc58 JJ |
1371 | |
1372 | /* An optional expression may be used to cause gdb to terminate with the | |
371d5dec | 1373 | value of that expression. */ |
b0abbc58 JJ |
1374 | if (args) |
1375 | { | |
1376 | struct value *val = parse_and_eval (args); | |
1377 | ||
1378 | exit_code = (int) value_as_long (val); | |
1379 | } | |
4b0ad762 AS |
1380 | else if (return_child_result) |
1381 | exit_code = return_child_result_value; | |
b0abbc58 | 1382 | |
365c70b1 JJ |
1383 | qt.args = args; |
1384 | qt.from_tty = from_tty; | |
1385 | ||
2f9d54cf PA |
1386 | /* Wrappers to make the code below a bit more readable. */ |
1387 | #define DO_TRY \ | |
1388 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1389 | ||
1390 | #define DO_PRINT_EX \ | |
1391 | if (ex.reason < 0) \ | |
1392 | exception_print (gdb_stderr, ex) | |
1393 | ||
b0abbc58 | 1394 | /* We want to handle any quit errors and exit regardless. */ |
2f9d54cf PA |
1395 | |
1396 | /* Get out of tfind mode, and kill or detach all inferiors. */ | |
1397 | DO_TRY | |
1398 | { | |
1399 | disconnect_tracing (); | |
1400 | iterate_over_inferiors (kill_or_detach, &qt); | |
1401 | } | |
1402 | DO_PRINT_EX; | |
1403 | ||
1404 | /* Give all pushed targets a chance to do minimal cleanup, and pop | |
1405 | them all out. */ | |
1406 | DO_TRY | |
1407 | { | |
1408 | pop_all_targets (); | |
1409 | } | |
1410 | DO_PRINT_EX; | |
1411 | ||
1412 | /* Save the history information if it is appropriate to do so. */ | |
1413 | DO_TRY | |
1414 | { | |
35ab155d MB |
1415 | if (write_history_p && history_filename |
1416 | && input_from_terminal_p ()) | |
2f9d54cf PA |
1417 | write_history (history_filename); |
1418 | } | |
1419 | DO_PRINT_EX; | |
1420 | ||
1421 | /* Do any final cleanups before exiting. */ | |
1422 | DO_TRY | |
1423 | { | |
1424 | do_final_cleanups (all_cleanups ()); | |
1425 | } | |
1426 | DO_PRINT_EX; | |
b0abbc58 | 1427 | |
9e0b60a8 JM |
1428 | exit (exit_code); |
1429 | } | |
1430 | ||
698ba934 DJ |
1431 | /* Returns whether GDB is running on a terminal and input is |
1432 | currently coming from that terminal. */ | |
9e0b60a8 JM |
1433 | |
1434 | int | |
fba45db2 | 1435 | input_from_terminal_p (void) |
9e0b60a8 | 1436 | { |
c63a1f86 JK |
1437 | if (batch_flag) |
1438 | return 0; | |
1439 | ||
698ba934 DJ |
1440 | if (gdb_has_a_terminal () && instream == stdin) |
1441 | return 1; | |
1442 | ||
1443 | /* If INSTREAM is unset, and we are not in a user command, we | |
1444 | must be in Insight. That's like having a terminal, for our | |
1445 | purposes. */ | |
1446 | if (instream == NULL && !in_user_command) | |
1447 | return 1; | |
1448 | ||
1449 | return 0; | |
9e0b60a8 JM |
1450 | } |
1451 | \f | |
9e0b60a8 | 1452 | static void |
fba45db2 | 1453 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1454 | { |
dc7eb48e PA |
1455 | /* Can't call dont_repeat here because we're not necessarily reading |
1456 | from stdin. */ | |
1457 | *saved_command_line = 0; | |
9e0b60a8 JM |
1458 | } |
1459 | \f | |
1460 | /* Functions to manipulate command line editing control variables. */ | |
1461 | ||
1462 | /* Number of commands to print in each call to show_commands. */ | |
1463 | #define Hist_print 10 | |
d318976c | 1464 | void |
fba45db2 | 1465 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1466 | { |
1467 | /* Index for history commands. Relative to history_base. */ | |
1468 | int offset; | |
1469 | ||
1470 | /* Number of the history entry which we are planning to display next. | |
1471 | Relative to history_base. */ | |
1472 | static int num = 0; | |
1473 | ||
9e0b60a8 | 1474 | /* Print out some of the commands from the command history. */ |
9e0b60a8 JM |
1475 | |
1476 | if (args) | |
1477 | { | |
1478 | if (args[0] == '+' && args[1] == '\0') | |
1479 | /* "info editing +" should print from the stored position. */ | |
1480 | ; | |
1481 | else | |
1482 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1483 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1484 | } |
1485 | /* "show commands" means print the last Hist_print commands. */ | |
1486 | else | |
1487 | { | |
840a9a1f | 1488 | num = history_length - Hist_print; |
9e0b60a8 JM |
1489 | } |
1490 | ||
1491 | if (num < 0) | |
1492 | num = 0; | |
1493 | ||
1494 | /* If there are at least Hist_print commands, we want to display the last | |
1495 | Hist_print rather than, say, the last 6. */ | |
840a9a1f | 1496 | if (history_length - num < Hist_print) |
9e0b60a8 | 1497 | { |
840a9a1f | 1498 | num = history_length - Hist_print; |
9e0b60a8 JM |
1499 | if (num < 0) |
1500 | num = 0; | |
1501 | } | |
1502 | ||
840a9a1f PA |
1503 | for (offset = num; |
1504 | offset < num + Hist_print && offset < history_length; | |
1505 | offset++) | |
9e0b60a8 JM |
1506 | { |
1507 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1508 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1509 | } |
1510 | ||
1511 | /* The next command we want to display is the next one that we haven't | |
1512 | displayed yet. */ | |
1513 | num += Hist_print; | |
1514 | ||
1515 | /* If the user repeats this command with return, it should do what | |
1516 | "show commands +" does. This is unnecessary if arg is null, | |
1517 | because "show commands +" is not useful after "show commands". */ | |
1518 | if (from_tty && args) | |
1519 | { | |
1520 | args[0] = '+'; | |
1521 | args[1] = '\0'; | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | /* Called by do_setshow_command. */ | |
9e0b60a8 | 1526 | static void |
fba45db2 | 1527 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1528 | { |
840a9a1f PA |
1529 | /* Readline's history interface works with 'int', so it can only |
1530 | handle history sizes up to INT_MAX. The command itself is | |
1531 | uinteger, so UINT_MAX means "unlimited", but we only get that if | |
1532 | the user does "set history size 0" -- "set history size <UINT_MAX>" | |
1533 | throws out-of-range. */ | |
1534 | if (history_size_setshow_var > INT_MAX | |
1535 | && history_size_setshow_var != UINT_MAX) | |
9e0b60a8 | 1536 | { |
840a9a1f PA |
1537 | unsigned int new_value = history_size_setshow_var; |
1538 | ||
1539 | /* Restore previous value before throwing. */ | |
1540 | if (history_is_stifled ()) | |
1541 | history_size_setshow_var = history_max_entries; | |
1542 | else | |
1543 | history_size_setshow_var = UINT_MAX; | |
1544 | ||
1545 | error (_("integer %u out of range"), new_value); | |
9e0b60a8 | 1546 | } |
840a9a1f PA |
1547 | |
1548 | /* Commit the new value to readline's history. */ | |
1549 | if (history_size_setshow_var == UINT_MAX) | |
1550 | unstifle_history (); | |
883b9c6c | 1551 | else |
840a9a1f | 1552 | stifle_history (history_size_setshow_var); |
9e0b60a8 JM |
1553 | } |
1554 | ||
d318976c | 1555 | void |
fba45db2 | 1556 | set_history (char *args, int from_tty) |
9e0b60a8 | 1557 | { |
3e43a32a MS |
1558 | printf_unfiltered (_("\"set history\" must be followed " |
1559 | "by the name of a history subcommand.\n")); | |
9e0b60a8 JM |
1560 | help_list (sethistlist, "set history ", -1, gdb_stdout); |
1561 | } | |
1562 | ||
d318976c | 1563 | void |
fba45db2 | 1564 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1565 | { |
1566 | cmd_show_list (showhistlist, from_tty, ""); | |
1567 | } | |
1568 | ||
371d5dec | 1569 | int info_verbose = 0; /* Default verbose msgs off. */ |
9e0b60a8 JM |
1570 | |
1571 | /* Called by do_setshow_command. An elaborate joke. */ | |
d318976c | 1572 | void |
fba45db2 | 1573 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1574 | { |
6f937416 | 1575 | const char *cmdname = "verbose"; |
9e0b60a8 JM |
1576 | struct cmd_list_element *showcmd; |
1577 | ||
1578 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1427fe5e | 1579 | gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS); |
9e0b60a8 JM |
1580 | |
1581 | if (info_verbose) | |
1582 | { | |
1583 | c->doc = "Set verbose printing of informational messages."; | |
1584 | showcmd->doc = "Show verbose printing of informational messages."; | |
1585 | } | |
1586 | else | |
1587 | { | |
1588 | c->doc = "Set verbosity."; | |
1589 | showcmd->doc = "Show verbosity."; | |
1590 | } | |
1591 | } | |
1592 | ||
9e0b60a8 | 1593 | /* Init the history buffer. Note that we are called after the init file(s) |
371d5dec MS |
1594 | have been read so that the user can change the history file via his |
1595 | .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1596 | overrides all of this. */ | |
9e0b60a8 JM |
1597 | |
1598 | void | |
fba45db2 | 1599 | init_history (void) |
9e0b60a8 JM |
1600 | { |
1601 | char *tmpenv; | |
1602 | ||
1603 | tmpenv = getenv ("HISTSIZE"); | |
1604 | if (tmpenv) | |
840a9a1f PA |
1605 | { |
1606 | int var; | |
1607 | ||
1608 | var = atoi (tmpenv); | |
1609 | if (var < 0) | |
1610 | { | |
1611 | /* Prefer ending up with no history rather than overflowing | |
1612 | readline's history interface, which uses signed 'int' | |
1613 | everywhere. */ | |
1614 | var = 0; | |
1615 | } | |
1616 | ||
1617 | history_size_setshow_var = var; | |
1618 | } | |
1619 | /* If the init file hasn't set a size yet, pick the default. */ | |
1620 | else if (history_size_setshow_var == 0) | |
1621 | history_size_setshow_var = 256; | |
9e0b60a8 | 1622 | |
840a9a1f PA |
1623 | /* Note that unlike "set history size 0", "HISTSIZE=0" really sets |
1624 | the history size to 0... */ | |
1625 | stifle_history (history_size_setshow_var); | |
9e0b60a8 JM |
1626 | |
1627 | tmpenv = getenv ("GDBHISTFILE"); | |
1628 | if (tmpenv) | |
1b36a34b | 1629 | history_filename = xstrdup (tmpenv); |
c5aa993b JM |
1630 | else if (!history_filename) |
1631 | { | |
1632 | /* We include the current directory so that if the user changes | |
1633 | directories the file written will be the same as the one | |
1634 | that was read. */ | |
a0b3c4fd | 1635 | #ifdef __MSDOS__ |
eb2f494a | 1636 | /* No leading dots in file names are allowed on MSDOS. */ |
1754f103 MK |
1637 | history_filename = concat (current_directory, "/_gdb_history", |
1638 | (char *)NULL); | |
a0b3c4fd | 1639 | #else |
1754f103 MK |
1640 | history_filename = concat (current_directory, "/.gdb_history", |
1641 | (char *)NULL); | |
a0b3c4fd | 1642 | #endif |
c5aa993b | 1643 | } |
9e0b60a8 JM |
1644 | read_history (history_filename); |
1645 | } | |
1646 | ||
920d2a44 | 1647 | static void |
ab821bc6 PA |
1648 | show_prompt (struct ui_file *file, int from_tty, |
1649 | struct cmd_list_element *c, const char *value) | |
920d2a44 AC |
1650 | { |
1651 | fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value); | |
1652 | } | |
1653 | ||
1654 | static void | |
1655 | show_async_command_editing_p (struct ui_file *file, int from_tty, | |
1656 | struct cmd_list_element *c, const char *value) | |
1657 | { | |
3e43a32a MS |
1658 | fprintf_filtered (file, _("Editing of command lines as " |
1659 | "they are typed is %s.\n"), | |
920d2a44 AC |
1660 | value); |
1661 | } | |
1662 | ||
1663 | static void | |
1664 | show_annotation_level (struct ui_file *file, int from_tty, | |
1665 | struct cmd_list_element *c, const char *value) | |
1666 | { | |
1667 | fprintf_filtered (file, _("Annotation_level is %s.\n"), value); | |
1668 | } | |
1669 | ||
1670 | static void | |
1671 | show_exec_done_display_p (struct ui_file *file, int from_tty, | |
1672 | struct cmd_list_element *c, const char *value) | |
1673 | { | |
3e43a32a MS |
1674 | fprintf_filtered (file, _("Notification of completion for " |
1675 | "asynchronous execution commands is %s.\n"), | |
920d2a44 AC |
1676 | value); |
1677 | } | |
6dea1fbd JK |
1678 | |
1679 | /* "set" command for the gdb_datadir configuration variable. */ | |
1680 | ||
1681 | static void | |
1682 | set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c) | |
1683 | { | |
1684 | observer_notify_gdb_datadir_changed (); | |
1685 | } | |
1686 | ||
97c85fc6 MB |
1687 | static void |
1688 | set_history_filename (char *args, int from_tty, struct cmd_list_element *c) | |
1689 | { | |
1690 | /* We include the current directory so that if the user changes | |
1691 | directories the file written will be the same as the one | |
1692 | that was read. */ | |
1693 | if (!IS_ABSOLUTE_PATH (history_filename)) | |
1694 | history_filename = reconcat (history_filename, current_directory, "/", | |
1695 | history_filename, (char *) NULL); | |
1696 | } | |
1697 | ||
9e0b60a8 | 1698 | static void |
fba45db2 | 1699 | init_main (void) |
9e0b60a8 | 1700 | { |
ab821bc6 PA |
1701 | /* Initialize the prompt to a simple "(gdb) " prompt or to whatever |
1702 | the DEFAULT_PROMPT is. */ | |
1703 | set_prompt (DEFAULT_PROMPT); | |
1704 | ||
362646f5 AC |
1705 | /* Set things up for annotation_level > 1, if the user ever decides |
1706 | to use it. */ | |
1707 | async_annotation_suffix = "prompt"; | |
362646f5 | 1708 | |
9e0b60a8 JM |
1709 | /* Set the important stuff up for command editing. */ |
1710 | command_editing_p = 1; | |
9e0b60a8 JM |
1711 | history_expansion_p = 0; |
1712 | write_history_p = 0; | |
1713 | ||
1714 | /* Setup important stuff for command line editing. */ | |
67c296a2 | 1715 | rl_completion_word_break_hook = gdb_completion_word_break_characters; |
38017ce8 | 1716 | rl_completion_entry_function = readline_line_completion_function; |
51065942 | 1717 | rl_completer_word_break_characters = default_word_break_characters (); |
d318976c | 1718 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); |
9e0b60a8 | 1719 | rl_readline_name = "gdb"; |
7cb3ec5e | 1720 | rl_terminal_name = getenv ("TERM"); |
9e0b60a8 | 1721 | |
467d8519 TT |
1722 | /* The name for this defun comes from Bash, where it originated. |
1723 | 15 is Control-o, the same binding this function has in Bash. */ | |
1724 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1725 | ||
4d28ad1e | 1726 | add_setshow_string_cmd ("prompt", class_support, |
ab821bc6 | 1727 | &top_prompt, |
3e43a32a MS |
1728 | _("Set gdb's prompt"), |
1729 | _("Show gdb's prompt"), | |
ab821bc6 PA |
1730 | NULL, NULL, |
1731 | show_prompt, | |
4d28ad1e | 1732 | &setlist, &showlist); |
9e0b60a8 | 1733 | |
1bedd215 | 1734 | add_com ("dont-repeat", class_support, dont_repeat_command, _("\ |
3e43a32a MS |
1735 | Don't repeat this command.\nPrimarily \ |
1736 | used inside of user-defined commands that should not be repeated when\n\ | |
1bedd215 | 1737 | hitting return.")); |
9e0b60a8 | 1738 | |
5bf193a2 AC |
1739 | add_setshow_boolean_cmd ("editing", class_support, |
1740 | &async_command_editing_p, _("\ | |
1741 | Set editing of command lines as they are typed."), _("\ | |
1742 | Show editing of command lines as they are typed."), _("\ | |
9e0b60a8 JM |
1743 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
1744 | Without an argument, command line editing is enabled. To edit, use\n\ | |
5bf193a2 AC |
1745 | EMACS-like or VI-like commands like control-P or ESC."), |
1746 | set_async_editing_command, | |
920d2a44 | 1747 | show_async_command_editing_p, |
5bf193a2 AC |
1748 | &setlist, &showlist); |
1749 | ||
1750 | add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\ | |
1751 | Set saving of the history record on exit."), _("\ | |
1752 | Show saving of the history record on exit."), _("\ | |
9e0b60a8 | 1753 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
5bf193a2 AC |
1754 | Without an argument, saving is enabled."), |
1755 | NULL, | |
920d2a44 | 1756 | show_write_history_p, |
5bf193a2 | 1757 | &sethistlist, &showhistlist); |
9e0b60a8 | 1758 | |
840a9a1f | 1759 | add_setshow_uinteger_cmd ("size", no_class, &history_size_setshow_var, _("\ |
4d28ad1e AC |
1760 | Set the size of the command history,"), _("\ |
1761 | Show the size of the command history,"), _("\ | |
f81d1120 PA |
1762 | ie. the number of previous commands to keep a record of.\n\ |
1763 | If set to \"unlimited\", the number of commands kept in the history\n\ | |
1764 | list is unlimited. This defaults to the value of the environment\n\ | |
1765 | variable \"HISTSIZE\", or to 256 if this variable is not set."), | |
883b9c6c YQ |
1766 | set_history_size_command, |
1767 | show_history_size, | |
1768 | &sethistlist, &showhistlist); | |
4d28ad1e AC |
1769 | |
1770 | add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\ | |
1771 | Set the filename in which to record the command history"), _("\ | |
1772 | Show the filename in which to record the command history"), _("\ | |
1773 | (the list of previous commands of which a record is kept)."), | |
97c85fc6 | 1774 | set_history_filename, |
920d2a44 | 1775 | show_history_filename, |
4d28ad1e | 1776 | &sethistlist, &showhistlist); |
9e0b60a8 | 1777 | |
e360902b | 1778 | add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\ |
5bf193a2 AC |
1779 | Set whether to confirm potentially dangerous operations."), _("\ |
1780 | Show whether to confirm potentially dangerous operations."), NULL, | |
1781 | NULL, | |
e360902b | 1782 | show_confirm, |
5bf193a2 | 1783 | &setlist, &showlist); |
9e0b60a8 | 1784 | |
85c07804 AC |
1785 | add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\ |
1786 | Set annotation_level."), _("\ | |
1787 | Show annotation_level."), _("\ | |
9e0b60a8 | 1788 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
85c07804 | 1789 | 2 == output annotated suitably for use by programs that control GDB."), |
ab821bc6 | 1790 | NULL, |
920d2a44 | 1791 | show_annotation_level, |
85c07804 | 1792 | &setlist, &showlist); |
362646f5 | 1793 | |
5bf193a2 AC |
1794 | add_setshow_boolean_cmd ("exec-done-display", class_support, |
1795 | &exec_done_display_p, _("\ | |
1796 | Set notification of completion for asynchronous execution commands."), _("\ | |
1797 | Show notification of completion for asynchronous execution commands."), _("\ | |
1798 | Use \"on\" to enable the notification, and \"off\" to disable it."), | |
1799 | NULL, | |
920d2a44 | 1800 | show_exec_done_display_p, |
5bf193a2 | 1801 | &setlist, &showlist); |
b14b1491 TT |
1802 | |
1803 | add_setshow_filename_cmd ("data-directory", class_maintenance, | |
1804 | &gdb_datadir, _("Set GDB's data directory."), | |
1805 | _("Show GDB's data directory."), | |
1806 | _("\ | |
1807 | When set, GDB uses the specified path to search for data files."), | |
6dea1fbd | 1808 | set_gdb_datadir, NULL, |
b14b1491 TT |
1809 | &setlist, |
1810 | &showlist); | |
9e0b60a8 | 1811 | } |
64cdedad EZ |
1812 | |
1813 | void | |
1814 | gdb_init (char *argv0) | |
1815 | { | |
1816 | if (pre_init_ui_hook) | |
1817 | pre_init_ui_hook (); | |
1818 | ||
371d5dec | 1819 | /* Run the init function of each source file. */ |
64cdedad | 1820 | |
64cdedad EZ |
1821 | #ifdef __MSDOS__ |
1822 | /* Make sure we return to the original directory upon exit, come | |
1823 | what may, since the OS doesn't do that for us. */ | |
1824 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1825 | #endif | |
1826 | ||
371d5dec MS |
1827 | init_cmd_lists (); /* This needs to be done first. */ |
1828 | initialize_targets (); /* Setup target_terminal macros for utils.c. */ | |
1829 | initialize_utils (); /* Make errors and warnings possible. */ | |
9dea9163 DE |
1830 | |
1831 | /* Here is where we call all the _initialize_foo routines. */ | |
64cdedad | 1832 | initialize_all_files (); |
9dea9163 | 1833 | |
6c95b8df PA |
1834 | /* This creates the current_program_space. Do this after all the |
1835 | _initialize_foo routines have had a chance to install their | |
1836 | per-sspace data keys. Also do this before | |
1837 | initialize_current_architecture is called, because it accesses | |
1838 | exec_bfd of the current program space. */ | |
1839 | initialize_progspace (); | |
1840 | initialize_inferiors (); | |
64cdedad EZ |
1841 | initialize_current_architecture (); |
1842 | init_cli_cmds(); | |
843b20dc | 1843 | initialize_event_loop (); |
371d5dec | 1844 | init_main (); /* But that omits this file! Do it now. */ |
64cdedad | 1845 | |
0ea3f30e DJ |
1846 | initialize_stdin_serial (); |
1847 | ||
362646f5 | 1848 | async_init_signals (); |
64cdedad | 1849 | |
371d5dec MS |
1850 | /* We need a default language for parsing expressions, so simple |
1851 | things like "set width 0" won't fail if no language is explicitly | |
1852 | set in a config file or implicitly set by reading an executable | |
1853 | during startup. */ | |
64cdedad | 1854 | set_language (language_c); |
371d5dec | 1855 | expected_language = current_language; /* Don't warn about the change. */ |
64cdedad | 1856 | |
c378eb4e | 1857 | /* Allow another UI to initialize. If the UI fails to initialize, |
9a4105ab AC |
1858 | and it wants GDB to revert to the CLI, it should clear |
1859 | deprecated_init_ui_hook. */ | |
1860 | if (deprecated_init_ui_hook) | |
1861 | deprecated_init_ui_hook (argv0); | |
9dea9163 DE |
1862 | |
1863 | #ifdef HAVE_PYTHON | |
371d5dec MS |
1864 | /* Python initialization can require various commands to be |
1865 | installed. For example "info pretty-printer" needs the "info" | |
1866 | prefix to be installed. Keep things simple and just do final | |
1867 | python initialization here. */ | |
9dea9163 DE |
1868 | finish_python_initialization (); |
1869 | #endif | |
64cdedad | 1870 | } |