Commit | Line | Data |
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c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
a752853e | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 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" | |
45741a9c | 28 | #include "infrun.h" |
042be3a9 | 29 | #include <signal.h> |
c906108c | 30 | #include "target.h" |
68c765e2 | 31 | #include "target-dcache.h" |
c906108c SS |
32 | #include "breakpoint.h" |
33 | #include "gdbtypes.h" | |
34 | #include "expression.h" | |
35 | #include "value.h" | |
36 | #include "language.h" | |
c5aa993b | 37 | #include "terminal.h" /* For job_control. */ |
c906108c | 38 | #include "annotate.h" |
c5f0f3d0 | 39 | #include "completer.h" |
c906108c | 40 | #include "top.h" |
d4f3574e | 41 | #include "version.h" |
210661e7 | 42 | #include "serial.h" |
d16aafd8 | 43 | #include "doublest.h" |
f17517ea | 44 | #include "main.h" |
2e03ee74 | 45 | #include "event-loop.h" |
8ea051c5 | 46 | #include "gdbthread.h" |
6dddc817 | 47 | #include "extension.h" |
b4a14fd0 | 48 | #include "interps.h" |
6dea1fbd | 49 | #include "observer.h" |
bd712aed | 50 | #include "maint.h" |
97c85fc6 | 51 | #include "filenames.h" |
06096720 | 52 | #include "frame.h" |
7a3bde34 | 53 | #include "buffer.h" |
c906108c | 54 | |
371d5dec | 55 | /* readline include files. */ |
dbda9972 AC |
56 | #include "readline/readline.h" |
57 | #include "readline/history.h" | |
c906108c SS |
58 | |
59 | /* readline defines this. */ | |
60 | #undef savestring | |
61 | ||
62 | #include <sys/types.h> | |
c906108c | 63 | |
c2c6d25f | 64 | #include "event-top.h" |
53ce3c39 | 65 | #include <sys/stat.h> |
c906108c | 66 | #include <ctype.h> |
8b93c638 JM |
67 | #include "ui-out.h" |
68 | #include "cli-out.h" | |
2f9d54cf | 69 | #include "tracepoint.h" |
93d6eb10 | 70 | #include "inf-loop.h" |
c906108c | 71 | |
18206ca3 PP |
72 | #if defined(TUI) |
73 | # include "tui/tui.h" | |
74 | #endif | |
75 | ||
ca7b0bbc TT |
76 | extern void initialize_all_files (void); |
77 | ||
95298e72 PM |
78 | #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt |
79 | #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix | |
80 | #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix | |
81 | ||
371d5dec | 82 | /* Default command line prompt. This is overriden in some configs. */ |
104c1213 JM |
83 | |
84 | #ifndef DEFAULT_PROMPT | |
85 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
86 | #endif |
87 | ||
e655c1a2 | 88 | /* Initialization file name for gdb. This is host-dependent. */ |
eaae3919 | 89 | |
e655c1a2 | 90 | const char gdbinit[] = GDBINIT; |
c906108c SS |
91 | |
92 | int inhibit_gdbinit = 0; | |
93 | ||
c906108c SS |
94 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
95 | ||
050a2e1d PA |
96 | /* Flag for whether we want to confirm potentially dangerous |
97 | operations. Default is yes. */ | |
98 | ||
e360902b | 99 | int confirm = 1; |
c906108c | 100 | |
920d2a44 | 101 | static void |
e360902b | 102 | show_confirm (struct ui_file *file, int from_tty, |
920d2a44 AC |
103 | struct cmd_list_element *c, const char *value) |
104 | { | |
3e43a32a MS |
105 | fprintf_filtered (file, _("Whether to confirm potentially " |
106 | "dangerous operations is %s.\n"), | |
920d2a44 AC |
107 | value); |
108 | } | |
c906108c | 109 | |
371d5dec MS |
110 | /* stdio stream that command input is being read from. Set to stdin |
111 | normally. Set by source_command to the file we are sourcing. Set | |
112 | to NULL if we are executing a user-defined command or interacting | |
113 | via a GUI. */ | |
c906108c SS |
114 | |
115 | FILE *instream; | |
116 | ||
698ba934 DJ |
117 | /* Flag to indicate whether a user defined command is currently running. */ |
118 | ||
119 | int in_user_command; | |
120 | ||
c906108c SS |
121 | /* Current working directory. */ |
122 | ||
123 | char *current_directory; | |
124 | ||
125 | /* The directory name is actually stored here (usually). */ | |
126 | char gdb_dirbuf[1024]; | |
127 | ||
2669cade PA |
128 | /* The last command line executed on the console. Used for command |
129 | repetitions. */ | |
dc7eb48e | 130 | char *saved_command_line; |
c906108c SS |
131 | |
132 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 133 | affects things like recording into the command history, commands |
c906108c SS |
134 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
135 | whatever) can issue its own commands and also send along commands | |
136 | from the user, and have the user not notice that the user interface | |
137 | is issuing commands too. */ | |
138 | int server_command; | |
139 | ||
371d5dec | 140 | /* Timeout limit for response from target. */ |
c906108c | 141 | |
ce808e91 AC |
142 | /* The default value has been changed many times over the years. It |
143 | was originally 5 seconds. But that was thought to be a long time | |
144 | to sit and wait, so it was changed to 2 seconds. That was thought | |
145 | to be plenty unless the connection was going through some terminal | |
146 | server or multiplexer or other form of hairy serial connection. | |
147 | ||
148 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
149 | it began being used in other remote-* targets. It appears that the | |
150 | default was changed to 20 seconds at that time, perhaps because the | |
85a453d5 | 151 | Renesas E7000 ICE didn't always respond in a timely manner. |
ce808e91 AC |
152 | |
153 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
154 | 20 seconds is far worse. This demonstrates the difficulty of using | |
155 | a single variable for all protocol timeouts. | |
156 | ||
157 | As remote.c is used much more than remote-e7000.c, it was changed | |
371d5dec | 158 | back to 2 seconds in 1999. */ |
ce808e91 AC |
159 | |
160 | int remote_timeout = 2; | |
c906108c SS |
161 | |
162 | /* Non-zero tells remote* modules to output debugging info. */ | |
163 | ||
164 | int remote_debug = 0; | |
165 | ||
6dd77b81 RH |
166 | /* Sbrk location on entry to main. Used for statistics only. */ |
167 | #ifdef HAVE_SBRK | |
168 | char *lim_at_start; | |
169 | #endif | |
170 | ||
c906108c SS |
171 | /* Hooks for alternate command interfaces. */ |
172 | ||
371d5dec MS |
173 | /* This hook is called from within gdb's many mini-event loops which |
174 | could steal control from a real user interface's event loop. It | |
175 | returns non-zero if the user is requesting a detach, zero | |
176 | otherwise. */ | |
7a292a7a | 177 | |
98bbd631 | 178 | int (*deprecated_ui_loop_hook) (int); |
c906108c | 179 | |
c906108c | 180 | |
c906108c SS |
181 | /* Called from print_frame_info to list the line we stopped in. */ |
182 | ||
371d5dec MS |
183 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, |
184 | int line, | |
185 | int stopline, | |
186 | int noerror); | |
c906108c SS |
187 | /* Replaces most of query. */ |
188 | ||
9a4105ab | 189 | int (*deprecated_query_hook) (const char *, va_list); |
c906108c SS |
190 | |
191 | /* Replaces most of warning. */ | |
192 | ||
9a4105ab | 193 | void (*deprecated_warning_hook) (const char *, va_list); |
c906108c | 194 | |
9a4105ab AC |
195 | /* These three functions support getting lines of text from the user. |
196 | They are used in sequence. First deprecated_readline_begin_hook is | |
197 | called with a text string that might be (for example) a message for | |
198 | the user to type in a sequence of commands to be executed at a | |
199 | breakpoint. If this function calls back to a GUI, it might take | |
200 | this opportunity to pop up a text interaction window with this | |
201 | message. Next, deprecated_readline_hook is called with a prompt | |
202 | that is emitted prior to collecting the user input. It can be | |
203 | called multiple times. Finally, deprecated_readline_end_hook is | |
204 | called to notify the GUI that we are done with the interaction | |
205 | window and it can close it. */ | |
c906108c | 206 | |
9a4105ab | 207 | void (*deprecated_readline_begin_hook) (char *, ...); |
38bcc89d | 208 | char *(*deprecated_readline_hook) (const char *); |
9a4105ab | 209 | void (*deprecated_readline_end_hook) (void); |
c906108c | 210 | |
6426a772 | 211 | /* Called as appropriate to notify the interface that we have attached |
371d5dec | 212 | to or detached from an already running process. */ |
6426a772 | 213 | |
9a4105ab AC |
214 | void (*deprecated_attach_hook) (void); |
215 | void (*deprecated_detach_hook) (void); | |
6426a772 | 216 | |
371d5dec MS |
217 | /* Called during long calculations to allow GUI to repair window |
218 | damage, and to check for stop buttons, etc... */ | |
c906108c | 219 | |
9a4105ab | 220 | void (*deprecated_interactive_hook) (void); |
c906108c | 221 | |
371d5dec MS |
222 | /* Called when going to wait for the target. Usually allows the GUI |
223 | to run while waiting for target events. */ | |
c906108c | 224 | |
9a4105ab | 225 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, |
47608cb1 PA |
226 | struct target_waitstatus *status, |
227 | int options); | |
c906108c | 228 | |
371d5dec MS |
229 | /* Used by UI as a wrapper around command execution. May do various |
230 | things like enabling/disabling buttons, etc... */ | |
c906108c | 231 | |
371d5dec MS |
232 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, |
233 | char *cmd, int from_tty); | |
c906108c SS |
234 | |
235 | /* Called when the current thread changes. Argument is thread id. */ | |
236 | ||
9a4105ab | 237 | void (*deprecated_context_hook) (int id); |
c906108c | 238 | |
c906108c SS |
239 | /* Handler for SIGHUP. */ |
240 | ||
241 | #ifdef SIGHUP | |
392a587b | 242 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 | 243 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 244 | event-top.c into this file, top.c. */ |
b2cd6b29 JM |
245 | /* static */ void |
246 | quit_cover (void) | |
c906108c | 247 | { |
e360902b PA |
248 | /* Stop asking user for confirmation --- we're exiting. This |
249 | prevents asking the user dumb questions. */ | |
250 | confirm = 0; | |
c5aa993b | 251 | quit_command ((char *) 0, 0); |
c906108c SS |
252 | } |
253 | #endif /* defined SIGHUP */ | |
254 | \f | |
7a9dd1b2 | 255 | /* Line number we are currently in, in a file which is being sourced. */ |
392a587b | 256 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 257 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 258 | event-top.c into this file, top.c. */ |
cd0fc7c3 | 259 | /* static */ int source_line_number; |
c906108c SS |
260 | |
261 | /* Name of the file we are sourcing. */ | |
392a587b | 262 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 263 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 264 | event-top.c into this file, top.c. */ |
05159abe | 265 | /* static */ const char *source_file_name; |
c906108c | 266 | |
c906108c SS |
267 | /* Clean up on error during a "source" command (or execution of a |
268 | user-defined command). */ | |
269 | ||
d318976c | 270 | void |
e41a3b1a | 271 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
272 | { |
273 | /* Restore the previous input stream. */ | |
19ba03f4 | 274 | instream = (FILE *) stream; |
c906108c SS |
275 | } |
276 | ||
277 | /* Read commands from STREAM. */ | |
278 | void | |
fba45db2 | 279 | read_command_file (FILE *stream) |
c906108c SS |
280 | { |
281 | struct cleanup *cleanups; | |
282 | ||
e41a3b1a | 283 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 284 | instream = stream; |
c5aa993b | 285 | command_loop (); |
c906108c SS |
286 | do_cleanups (cleanups); |
287 | } | |
288 | \f | |
507f3c78 | 289 | void (*pre_init_ui_hook) (void); |
c906108c | 290 | |
e41a3b1a | 291 | #ifdef __MSDOS__ |
70976b65 | 292 | static void |
e41a3b1a AC |
293 | do_chdir_cleanup (void *old_dir) |
294 | { | |
295 | chdir (old_dir); | |
b8c9b27d | 296 | xfree (old_dir); |
e41a3b1a AC |
297 | } |
298 | #endif | |
299 | ||
028d0ed5 | 300 | struct cleanup * |
4e5d721f DE |
301 | prepare_execute_command (void) |
302 | { | |
028d0ed5 TJB |
303 | struct value *mark; |
304 | struct cleanup *cleanup; | |
305 | ||
306 | mark = value_mark (); | |
307 | cleanup = make_cleanup_value_free_to_mark (mark); | |
4e5d721f | 308 | |
371d5dec MS |
309 | /* With multiple threads running while the one we're examining is |
310 | stopped, the dcache can get stale without us being able to detect | |
311 | it. For the duration of the command, though, use the dcache to | |
312 | help things like backtrace. */ | |
4e5d721f DE |
313 | if (non_stop) |
314 | target_dcache_invalidate (); | |
028d0ed5 TJB |
315 | |
316 | return cleanup; | |
4e5d721f DE |
317 | } |
318 | ||
77cce10f PA |
319 | /* Tell the user if the language has changed (except first time) after |
320 | executing a command. */ | |
321 | ||
322 | void | |
323 | check_frame_language_change (void) | |
324 | { | |
325 | static int warned = 0; | |
7ff38b1c | 326 | struct frame_info *frame; |
77cce10f PA |
327 | |
328 | /* First make sure that a new frame has been selected, in case the | |
329 | command or the hooks changed the program state. */ | |
7ff38b1c | 330 | frame = deprecated_safe_get_selected_frame (); |
77cce10f PA |
331 | if (current_language != expected_language) |
332 | { | |
333 | if (language_mode == language_mode_auto && info_verbose) | |
334 | { | |
335 | language_info (1); /* Print what changed. */ | |
336 | } | |
337 | warned = 0; | |
338 | } | |
339 | ||
340 | /* Warn the user if the working language does not match the language | |
341 | of the current frame. Only warn the user if we are actually | |
342 | running the program, i.e. there is a stack. */ | |
343 | /* FIXME: This should be cacheing the frame and only running when | |
344 | the frame changes. */ | |
345 | ||
346 | if (has_stack_frames ()) | |
347 | { | |
348 | enum language flang; | |
349 | ||
7ff38b1c | 350 | flang = get_frame_language (frame); |
77cce10f PA |
351 | if (!warned |
352 | && flang != language_unknown | |
353 | && flang != current_language->la_language) | |
354 | { | |
355 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
356 | warned = 1; | |
357 | } | |
358 | } | |
359 | } | |
360 | ||
98880d46 PA |
361 | /* See top.h. */ |
362 | ||
0b333c5e PA |
363 | void |
364 | wait_sync_command_done (void) | |
365 | { | |
366 | while (gdb_do_one_event () >= 0) | |
367 | if (!sync_execution) | |
368 | break; | |
369 | } | |
370 | ||
371 | /* See top.h. */ | |
372 | ||
98880d46 PA |
373 | void |
374 | maybe_wait_sync_command_done (int was_sync) | |
375 | { | |
376 | /* If the interpreter is in sync mode (we're running a user | |
377 | command's list, running command hooks or similars), and we | |
378 | just ran a synchronous command that started the target, wait | |
379 | for that command to end. */ | |
380 | if (!interpreter_async && !was_sync && sync_execution) | |
0b333c5e | 381 | wait_sync_command_done (); |
98880d46 PA |
382 | } |
383 | ||
648bf667 | 384 | /* Execute the line P as a command, in the current user context. |
d318976c | 385 | Pass FROM_TTY as second argument to the defining function. */ |
c906108c | 386 | |
d318976c FN |
387 | void |
388 | execute_command (char *p, int from_tty) | |
c906108c | 389 | { |
353d1d73 | 390 | struct cleanup *cleanup_if_error, *cleanup; |
52f0bd74 | 391 | struct cmd_list_element *c; |
d318976c | 392 | char *line; |
4e5d721f | 393 | |
353d1d73 | 394 | cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
028d0ed5 | 395 | cleanup = prepare_execute_command (); |
c906108c | 396 | |
d318976c FN |
397 | /* Force cleanup of any alloca areas if using C alloca instead of |
398 | a builtin alloca. */ | |
399 | alloca (0); | |
c906108c | 400 | |
d318976c FN |
401 | /* This can happen when command_line_input hits end of file. */ |
402 | if (p == NULL) | |
5fe41fbf TT |
403 | { |
404 | do_cleanups (cleanup); | |
5ae85e44 | 405 | discard_cleanups (cleanup_if_error); |
5fe41fbf TT |
406 | return; |
407 | } | |
c906108c | 408 | |
49d03eab | 409 | target_log_command (p); |
8b93c638 | 410 | |
d318976c FN |
411 | while (*p == ' ' || *p == '\t') |
412 | p++; | |
413 | if (*p) | |
8b93c638 | 414 | { |
6f937416 | 415 | const char *cmd = p; |
d318976c | 416 | char *arg; |
90e28950 TT |
417 | int was_sync = sync_execution; |
418 | ||
d318976c | 419 | line = p; |
8b93c638 | 420 | |
16026cd7 AS |
421 | /* If trace-commands is set then this will print this command. */ |
422 | print_command_trace (p); | |
423 | ||
6f937416 PA |
424 | c = lookup_cmd (&cmd, cmdlist, "", 0, 1); |
425 | p = (char *) cmd; | |
8b93c638 | 426 | |
d318976c FN |
427 | /* Pass null arg rather than an empty one. */ |
428 | arg = *p ? p : 0; | |
8b93c638 | 429 | |
9f60d481 AC |
430 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
431 | while the is_complete_command(cfunc) test is just plain | |
432 | bogus. They should both be replaced by a test of the form | |
433 | c->strip_trailing_white_space_p. */ | |
434 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
435 | can't be replaced with func. This is because it is the | |
436 | cfunc, and not the func, that has the value that the | |
437 | is_complete_command hack is testing for. */ | |
438 | /* Clear off trailing whitespace, except for set and complete | |
439 | command. */ | |
d318976c FN |
440 | if (arg |
441 | && c->type != set_cmd | |
bbaca940 | 442 | && !is_complete_command (c)) |
8b93c638 | 443 | { |
d318976c FN |
444 | p = arg + strlen (arg) - 1; |
445 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
446 | p--; | |
447 | *(p + 1) = '\0'; | |
8b93c638 JM |
448 | } |
449 | ||
371d5dec | 450 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 451 | execute_cmd_pre_hook (c); |
c906108c | 452 | |
1f2bdf09 | 453 | if (c->deprecated_warn_user) |
6f937416 | 454 | deprecated_cmd_warning (line); |
c906108c | 455 | |
7d74f244 | 456 | /* c->user_commands would be NULL in the case of a python command. */ |
fe978cb0 | 457 | if (c->theclass == class_user && c->user_commands) |
d318976c | 458 | execute_user_command (c, arg); |
5b9afe8a YQ |
459 | else if (c->type == set_cmd) |
460 | do_set_command (arg, from_tty, c); | |
461 | else if (c->type == show_cmd) | |
462 | do_show_command (arg, from_tty, c); | |
f436dd25 | 463 | else if (!cmd_func_p (c)) |
8a3fe4f8 | 464 | error (_("That is not a command, just a help topic.")); |
9a4105ab | 465 | else if (deprecated_call_command_hook) |
050a2e1d | 466 | deprecated_call_command_hook (c, arg, from_tty); |
d318976c | 467 | else |
050a2e1d | 468 | cmd_func (c, arg, from_tty); |
b4a14fd0 | 469 | |
98880d46 | 470 | maybe_wait_sync_command_done (was_sync); |
b4a14fd0 | 471 | |
371d5dec | 472 | /* If this command has been post-hooked, run the hook last. */ |
5913bcb0 | 473 | execute_cmd_post_hook (c); |
c906108c | 474 | |
c906108c SS |
475 | } |
476 | ||
77cce10f | 477 | check_frame_language_change (); |
028d0ed5 | 478 | |
353d1d73 JK |
479 | do_cleanups (cleanup); |
480 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
481 | } |
482 | ||
5da1313b JK |
483 | /* Run execute_command for P and FROM_TTY. Capture its output into the |
484 | returned string, do not display it to the screen. BATCH_FLAG will be | |
485 | temporarily set to true. */ | |
486 | ||
487 | char * | |
488 | execute_command_to_string (char *p, int from_tty) | |
489 | { | |
490 | struct ui_file *str_file; | |
491 | struct cleanup *cleanup; | |
492 | char *retval; | |
493 | ||
494 | /* GDB_STDOUT should be better already restored during these | |
495 | restoration callbacks. */ | |
496 | cleanup = set_batch_flag_and_make_cleanup_restore_page_info (); | |
497 | ||
b4a14fd0 PA |
498 | make_cleanup_restore_integer (&interpreter_async); |
499 | interpreter_async = 0; | |
500 | ||
5da1313b JK |
501 | str_file = mem_fileopen (); |
502 | ||
8d4d924b | 503 | make_cleanup_ui_file_delete (str_file); |
5da1313b JK |
504 | make_cleanup_restore_ui_file (&gdb_stdout); |
505 | make_cleanup_restore_ui_file (&gdb_stderr); | |
8d4d924b JK |
506 | make_cleanup_restore_ui_file (&gdb_stdlog); |
507 | make_cleanup_restore_ui_file (&gdb_stdtarg); | |
508 | make_cleanup_restore_ui_file (&gdb_stdtargerr); | |
509 | ||
79a45e25 | 510 | if (ui_out_redirect (current_uiout, str_file) < 0) |
8d4d924b JK |
511 | warning (_("Current output protocol does not support redirection")); |
512 | else | |
79a45e25 | 513 | make_cleanup_ui_out_redirect_pop (current_uiout); |
5da1313b JK |
514 | |
515 | gdb_stdout = str_file; | |
516 | gdb_stderr = str_file; | |
8d4d924b JK |
517 | gdb_stdlog = str_file; |
518 | gdb_stdtarg = str_file; | |
519 | gdb_stdtargerr = str_file; | |
5da1313b JK |
520 | |
521 | execute_command (p, from_tty); | |
522 | ||
523 | retval = ui_file_xstrdup (str_file, NULL); | |
524 | ||
525 | do_cleanups (cleanup); | |
526 | ||
527 | return retval; | |
528 | } | |
529 | ||
d318976c FN |
530 | /* Read commands from `instream' and execute them |
531 | until end of file or error reading instream. */ | |
c906108c | 532 | |
d318976c FN |
533 | void |
534 | command_loop (void) | |
c906108c | 535 | { |
d318976c FN |
536 | while (instream && !feof (instream)) |
537 | { | |
b69d38af | 538 | char *command; |
c906108c | 539 | |
c378eb4e | 540 | /* Get a command-line. This calls the readline package. */ |
d318976c | 541 | command = command_line_input (instream == stdin ? |
ab821bc6 | 542 | get_prompt () : (char *) NULL, |
d318976c | 543 | instream == stdin, "prompt"); |
b69d38af PA |
544 | if (command == NULL) |
545 | return; | |
546 | command_handler (command); | |
9e0b60a8 | 547 | } |
9e0b60a8 | 548 | } |
d318976c | 549 | \f |
47a80e90 TT |
550 | /* When nonzero, cause dont_repeat to do nothing. This should only be |
551 | set via prevent_dont_repeat. */ | |
552 | ||
553 | static int suppress_dont_repeat = 0; | |
554 | ||
d318976c | 555 | /* Commands call this if they do not want to be repeated by null lines. */ |
9e0b60a8 | 556 | |
d318976c FN |
557 | void |
558 | dont_repeat (void) | |
9e0b60a8 | 559 | { |
47a80e90 | 560 | if (suppress_dont_repeat || server_command) |
d318976c | 561 | return; |
9e0b60a8 | 562 | |
d318976c | 563 | /* If we aren't reading from standard input, we are saving the last |
371d5dec MS |
564 | thing read from stdin in line and don't want to delete it. Null |
565 | lines won't repeat here in any case. */ | |
d318976c | 566 | if (instream == stdin) |
dc7eb48e | 567 | *saved_command_line = 0; |
9e0b60a8 | 568 | } |
47a80e90 TT |
569 | |
570 | /* Prevent dont_repeat from working, and return a cleanup that | |
571 | restores the previous state. */ | |
572 | ||
573 | struct cleanup * | |
574 | prevent_dont_repeat (void) | |
575 | { | |
576 | struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat); | |
577 | ||
578 | suppress_dont_repeat = 1; | |
579 | return result; | |
580 | } | |
581 | ||
d318976c FN |
582 | \f |
583 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 584 | |
7a3bde34 | 585 | It prints PROMPT once at the start. |
d318976c FN |
586 | Action is compatible with "readline", e.g. space for the result is |
587 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 588 | |
d318976c | 589 | A NULL return means end of file. */ |
c5c136ea PA |
590 | |
591 | static char * | |
7a3bde34 | 592 | gdb_readline_no_editing (const char *prompt) |
9e0b60a8 | 593 | { |
7a3bde34 | 594 | struct buffer line_buffer; |
9e0b60a8 | 595 | |
7a3bde34 PA |
596 | buffer_init (&line_buffer); |
597 | ||
598 | if (prompt != NULL) | |
9e0b60a8 | 599 | { |
d318976c FN |
600 | /* Don't use a _filtered function here. It causes the assumed |
601 | character position to be off, since the newline we read from | |
602 | the user is not accounted for. */ | |
7a3bde34 | 603 | fputs_unfiltered (prompt, gdb_stdout); |
9e0b60a8 JM |
604 | gdb_flush (gdb_stdout); |
605 | } | |
606 | ||
9e0b60a8 JM |
607 | while (1) |
608 | { | |
7a3bde34 PA |
609 | int c; |
610 | ||
d318976c FN |
611 | /* Read from stdin if we are executing a user defined command. |
612 | This is the right thing for prompt_for_continue, at least. */ | |
613 | c = fgetc (instream ? instream : stdin); | |
9e0b60a8 | 614 | |
d318976c | 615 | if (c == EOF) |
9e0b60a8 | 616 | { |
7a3bde34 | 617 | if (line_buffer.used_size > 0) |
d318976c FN |
618 | /* The last line does not end with a newline. Return it, and |
619 | if we are called again fgetc will still return EOF and | |
620 | we'll return NULL then. */ | |
9e0b60a8 | 621 | break; |
7a3bde34 | 622 | xfree (buffer_finish (&line_buffer)); |
d318976c | 623 | return NULL; |
9e0b60a8 | 624 | } |
c5aa993b | 625 | |
d318976c | 626 | if (c == '\n') |
9e0b60a8 | 627 | { |
7a3bde34 PA |
628 | if (line_buffer.used_size > 0 |
629 | && line_buffer.buffer[line_buffer.used_size - 1] == '\r') | |
630 | line_buffer.used_size--; | |
d318976c | 631 | break; |
9e0b60a8 | 632 | } |
9e0b60a8 | 633 | |
7a3bde34 | 634 | buffer_grow_char (&line_buffer, c); |
9e0b60a8 JM |
635 | } |
636 | ||
7a3bde34 PA |
637 | buffer_grow_char (&line_buffer, '\0'); |
638 | return buffer_finish (&line_buffer); | |
9e0b60a8 JM |
639 | } |
640 | ||
d318976c FN |
641 | /* Variables which control command line editing and history |
642 | substitution. These variables are given default values at the end | |
643 | of this file. */ | |
644 | static int command_editing_p; | |
920d2a44 | 645 | |
d318976c FN |
646 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
647 | gdb to use the event loop as the default command loop and we merge | |
c378eb4e | 648 | event-top.c into this file, top.c. */ |
920d2a44 | 649 | |
d318976c | 650 | /* static */ int history_expansion_p; |
920d2a44 | 651 | |
d318976c | 652 | static int write_history_p; |
920d2a44 AC |
653 | static void |
654 | show_write_history_p (struct ui_file *file, int from_tty, | |
655 | struct cmd_list_element *c, const char *value) | |
656 | { | |
657 | fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"), | |
658 | value); | |
659 | } | |
660 | ||
840a9a1f | 661 | /* The variable associated with the "set/show history size" |
ebfd00d2 PP |
662 | command. The value -1 means unlimited, and -2 means undefined. */ |
663 | static int history_size_setshow_var = -2; | |
840a9a1f | 664 | |
920d2a44 AC |
665 | static void |
666 | show_history_size (struct ui_file *file, int from_tty, | |
667 | struct cmd_list_element *c, const char *value) | |
668 | { | |
669 | fprintf_filtered (file, _("The size of the command history is %s.\n"), | |
670 | value); | |
671 | } | |
672 | ||
fc637f04 PP |
673 | /* Variable associated with the "history remove-duplicates" option. |
674 | The value -1 means unlimited. */ | |
675 | static int history_remove_duplicates = 0; | |
676 | ||
677 | static void | |
678 | show_history_remove_duplicates (struct ui_file *file, int from_tty, | |
679 | struct cmd_list_element *c, const char *value) | |
680 | { | |
681 | fprintf_filtered (file, | |
682 | _("The number of history entries to look back at for " | |
683 | "duplicates is %s.\n"), | |
684 | value); | |
685 | } | |
686 | ||
d318976c | 687 | static char *history_filename; |
920d2a44 AC |
688 | static void |
689 | show_history_filename (struct ui_file *file, int from_tty, | |
690 | struct cmd_list_element *c, const char *value) | |
691 | { | |
3e43a32a MS |
692 | fprintf_filtered (file, _("The filename in which to record " |
693 | "the command history is \"%s\".\n"), | |
920d2a44 AC |
694 | value); |
695 | } | |
9e0b60a8 | 696 | |
b4f5539f | 697 | /* This is like readline(), but it has some gdb-specific behavior. |
2e03ee74 | 698 | gdb may want readline in both the synchronous and async modes during |
b4f5539f TT |
699 | a single gdb invocation. At the ordinary top-level prompt we might |
700 | be using the async readline. That means we can't use | |
701 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
702 | However, for a secondary prompt (" >", such as occurs during a | |
2e03ee74 DJ |
703 | `define'), gdb wants a synchronous response. |
704 | ||
705 | We used to call readline() directly, running it in synchronous | |
706 | mode. But mixing modes this way is not supported, and as of | |
707 | readline 5.x it no longer works; the arrow keys come unbound during | |
708 | the synchronous call. So we make a nested call into the event | |
709 | loop. That's what gdb_readline_wrapper is for. */ | |
710 | ||
711 | /* A flag set as soon as gdb_readline_wrapper_line is called; we can't | |
712 | rely on gdb_readline_wrapper_result, which might still be NULL if | |
713 | the user types Control-D for EOF. */ | |
714 | static int gdb_readline_wrapper_done; | |
715 | ||
716 | /* The result of the current call to gdb_readline_wrapper, once a newline | |
717 | is seen. */ | |
718 | static char *gdb_readline_wrapper_result; | |
719 | ||
720 | /* Any intercepted hook. Operate-and-get-next sets this, expecting it | |
721 | to be called after the newline is processed (which will redisplay | |
722 | the prompt). But in gdb_readline_wrapper we will not get a new | |
723 | prompt until the next call, or until we return to the event loop. | |
724 | So we disable this hook around the newline and restore it before we | |
725 | return. */ | |
726 | static void (*saved_after_char_processing_hook) (void); | |
727 | ||
948578a9 PP |
728 | |
729 | /* The number of nested readline secondary prompts that are currently | |
730 | active. */ | |
731 | ||
732 | static int gdb_secondary_prompt_depth = 0; | |
733 | ||
734 | /* See top.h. */ | |
735 | ||
736 | int | |
737 | gdb_in_secondary_prompt_p (void) | |
738 | { | |
739 | return gdb_secondary_prompt_depth > 0; | |
740 | } | |
741 | ||
742 | ||
2e03ee74 DJ |
743 | /* This function is called when readline has seen a complete line of |
744 | text. */ | |
745 | ||
746 | static void | |
747 | gdb_readline_wrapper_line (char *line) | |
748 | { | |
749 | gdb_assert (!gdb_readline_wrapper_done); | |
750 | gdb_readline_wrapper_result = line; | |
751 | gdb_readline_wrapper_done = 1; | |
752 | ||
753 | /* Prevent operate-and-get-next from acting too early. */ | |
754 | saved_after_char_processing_hook = after_char_processing_hook; | |
755 | after_char_processing_hook = NULL; | |
1b05479a DJ |
756 | |
757 | /* Prevent parts of the prompt from being redisplayed if annotations | |
0017922d | 758 | are enabled, and readline's state getting out of sync. We'll |
d3d4baed PA |
759 | reinstall the callback handler, which puts the terminal in raw |
760 | mode (or in readline lingo, in prepped state), when we're next | |
761 | ready to process user input, either in display_gdb_prompt, or if | |
762 | we're handling an asynchronous target event and running in the | |
763 | background, just before returning to the event loop to process | |
764 | further input (or more target events). */ | |
1b05479a | 765 | if (async_command_editing_p) |
d3d4baed | 766 | gdb_rl_callback_handler_remove (); |
2e03ee74 DJ |
767 | } |
768 | ||
769 | struct gdb_readline_wrapper_cleanup | |
770 | { | |
771 | void (*handler_orig) (char *); | |
2e03ee74 | 772 | int already_prompted_orig; |
93d6eb10 PA |
773 | |
774 | /* Whether the target was async. */ | |
775 | int target_is_async_orig; | |
2e03ee74 DJ |
776 | }; |
777 | ||
778 | static void | |
779 | gdb_readline_wrapper_cleanup (void *arg) | |
780 | { | |
19ba03f4 SM |
781 | struct gdb_readline_wrapper_cleanup *cleanup |
782 | = (struct gdb_readline_wrapper_cleanup *) arg; | |
2e03ee74 | 783 | |
2e03ee74 | 784 | rl_already_prompted = cleanup->already_prompted_orig; |
2e03ee74 DJ |
785 | |
786 | gdb_assert (input_handler == gdb_readline_wrapper_line); | |
787 | input_handler = cleanup->handler_orig; | |
0017922d | 788 | |
d3d4baed PA |
789 | /* Don't restore our input handler in readline yet. That would make |
790 | readline prep the terminal (putting it in raw mode), while the | |
791 | line we just read may trigger execution of a command that expects | |
792 | the terminal in the default cooked/canonical mode, such as e.g., | |
793 | running Python's interactive online help utility. See | |
794 | gdb_readline_wrapper_line for when we'll reinstall it. */ | |
0017922d | 795 | |
2e03ee74 DJ |
796 | gdb_readline_wrapper_result = NULL; |
797 | gdb_readline_wrapper_done = 0; | |
948578a9 PP |
798 | gdb_secondary_prompt_depth--; |
799 | gdb_assert (gdb_secondary_prompt_depth >= 0); | |
2e03ee74 DJ |
800 | |
801 | after_char_processing_hook = saved_after_char_processing_hook; | |
802 | saved_after_char_processing_hook = NULL; | |
803 | ||
93d6eb10 | 804 | if (cleanup->target_is_async_orig) |
6a3753b3 | 805 | target_async (1); |
93d6eb10 | 806 | |
2e03ee74 DJ |
807 | xfree (cleanup); |
808 | } | |
809 | ||
b4f5539f | 810 | char * |
38bcc89d | 811 | gdb_readline_wrapper (const char *prompt) |
b4f5539f | 812 | { |
2e03ee74 DJ |
813 | struct cleanup *back_to; |
814 | struct gdb_readline_wrapper_cleanup *cleanup; | |
815 | char *retval; | |
816 | ||
8d749320 | 817 | cleanup = XNEW (struct gdb_readline_wrapper_cleanup); |
2e03ee74 DJ |
818 | cleanup->handler_orig = input_handler; |
819 | input_handler = gdb_readline_wrapper_line; | |
820 | ||
2e03ee74 DJ |
821 | cleanup->already_prompted_orig = rl_already_prompted; |
822 | ||
93d6eb10 PA |
823 | cleanup->target_is_async_orig = target_is_async_p (); |
824 | ||
948578a9 | 825 | gdb_secondary_prompt_depth++; |
2e03ee74 DJ |
826 | back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup); |
827 | ||
93d6eb10 | 828 | if (cleanup->target_is_async_orig) |
6a3753b3 | 829 | target_async (0); |
93d6eb10 | 830 | |
2e03ee74 | 831 | /* Display our prompt and prevent double prompt display. */ |
1b05479a | 832 | display_gdb_prompt (prompt); |
2e03ee74 DJ |
833 | rl_already_prompted = 1; |
834 | ||
362646f5 | 835 | if (after_char_processing_hook) |
2e03ee74 DJ |
836 | (*after_char_processing_hook) (); |
837 | gdb_assert (after_char_processing_hook == NULL); | |
838 | ||
e0dd0826 | 839 | while (gdb_do_one_event () >= 0) |
2e03ee74 DJ |
840 | if (gdb_readline_wrapper_done) |
841 | break; | |
b4f5539f | 842 | |
2e03ee74 DJ |
843 | retval = gdb_readline_wrapper_result; |
844 | do_cleanups (back_to); | |
845 | return retval; | |
b4f5539f TT |
846 | } |
847 | ||
9e0b60a8 | 848 | \f |
467d8519 TT |
849 | /* The current saved history number from operate-and-get-next. |
850 | This is -1 if not valid. */ | |
851 | static int operate_saved_history = -1; | |
852 | ||
853 | /* This is put on the appropriate hook and helps operate-and-get-next | |
854 | do its work. */ | |
b9362cc7 | 855 | static void |
5ae5f592 | 856 | gdb_rl_operate_and_get_next_completion (void) |
467d8519 TT |
857 | { |
858 | int delta = where_history () - operate_saved_history; | |
5d502164 | 859 | |
467d8519 TT |
860 | /* The `key' argument to rl_get_previous_history is ignored. */ |
861 | rl_get_previous_history (delta, 0); | |
862 | operate_saved_history = -1; | |
863 | ||
864 | /* readline doesn't automatically update the display for us. */ | |
12f4afab | 865 | rl_redisplay (); |
467d8519 TT |
866 | |
867 | after_char_processing_hook = NULL; | |
868 | rl_pre_input_hook = NULL; | |
869 | } | |
870 | ||
871 | /* This is a gdb-local readline command handler. It accepts the | |
872 | current command line (like RET does) and, if this command was taken | |
873 | from the history, arranges for the next command in the history to | |
874 | appear on the command line when the prompt returns. | |
875 | We ignore the arguments. */ | |
876 | static int | |
877 | gdb_rl_operate_and_get_next (int count, int key) | |
878 | { | |
b5686e99 MK |
879 | int where; |
880 | ||
362646f5 AC |
881 | /* Use the async hook. */ |
882 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
467d8519 | 883 | |
b5686e99 MK |
884 | /* Find the current line, and find the next line to use. */ |
885 | where = where_history(); | |
886 | ||
1fb2e2b5 PA |
887 | if ((history_is_stifled () && (history_length >= history_max_entries)) |
888 | || (where >= history_length - 1)) | |
b5686e99 MK |
889 | operate_saved_history = where; |
890 | else | |
891 | operate_saved_history = where + 1; | |
892 | ||
467d8519 TT |
893 | return rl_newline (1, key); |
894 | } | |
08b13bdd PP |
895 | |
896 | /* Number of user commands executed during this session. */ | |
897 | ||
898 | static int command_count = 0; | |
899 | ||
900 | /* Add the user command COMMAND to the input history list. */ | |
901 | ||
902 | void | |
903 | gdb_add_history (const char *command) | |
904 | { | |
08b13bdd | 905 | command_count++; |
fc637f04 PP |
906 | |
907 | if (history_remove_duplicates != 0) | |
908 | { | |
909 | int lookbehind; | |
910 | int lookbehind_threshold; | |
911 | ||
912 | /* The lookbehind threshold for finding a duplicate history entry is | |
913 | bounded by command_count because we can't meaningfully delete | |
914 | history entries that are already stored in the history file since | |
915 | the history file is appended to. */ | |
916 | if (history_remove_duplicates == -1 | |
917 | || history_remove_duplicates > command_count) | |
918 | lookbehind_threshold = command_count; | |
919 | else | |
920 | lookbehind_threshold = history_remove_duplicates; | |
921 | ||
922 | using_history (); | |
923 | for (lookbehind = 0; lookbehind < lookbehind_threshold; lookbehind++) | |
924 | { | |
925 | HIST_ENTRY *temp = previous_history (); | |
926 | ||
927 | if (temp == NULL) | |
928 | break; | |
929 | ||
930 | if (strcmp (temp->line, command) == 0) | |
931 | { | |
932 | HIST_ENTRY *prev = remove_history (where_history ()); | |
933 | command_count--; | |
934 | free_history_entry (prev); | |
935 | break; | |
936 | } | |
937 | } | |
938 | using_history (); | |
939 | } | |
940 | ||
941 | add_history (command); | |
08b13bdd PP |
942 | } |
943 | ||
944 | /* Safely append new history entries to the history file in a corruption-free | |
945 | way using an intermediate local history file. */ | |
946 | ||
947 | static void | |
948 | gdb_safe_append_history (void) | |
949 | { | |
950 | int ret, saved_errno; | |
951 | char *local_history_filename; | |
952 | struct cleanup *old_chain; | |
953 | ||
954 | local_history_filename | |
955 | = xstrprintf ("%s-gdb%d~", history_filename, getpid ()); | |
956 | old_chain = make_cleanup (xfree, local_history_filename); | |
957 | ||
958 | ret = rename (history_filename, local_history_filename); | |
959 | saved_errno = errno; | |
960 | if (ret < 0 && saved_errno != ENOENT) | |
961 | { | |
962 | warning (_("Could not rename %s to %s: %s"), | |
963 | history_filename, local_history_filename, | |
964 | safe_strerror (saved_errno)); | |
965 | } | |
966 | else | |
967 | { | |
968 | if (ret < 0) | |
969 | { | |
970 | /* If the rename failed with ENOENT then either the global history | |
971 | file never existed in the first place or another GDB process is | |
972 | currently appending to it (and has thus temporarily renamed it). | |
973 | Since we can't distinguish between these two cases, we have to | |
974 | conservatively assume the first case and therefore must write out | |
975 | (not append) our known history to our local history file and try | |
976 | to move it back anyway. Otherwise a global history file would | |
977 | never get created! */ | |
978 | gdb_assert (saved_errno == ENOENT); | |
979 | write_history (local_history_filename); | |
980 | } | |
981 | else | |
982 | { | |
983 | append_history (command_count, local_history_filename); | |
2093d2d3 PP |
984 | if (history_is_stifled ()) |
985 | history_truncate_file (local_history_filename, history_max_entries); | |
08b13bdd PP |
986 | } |
987 | ||
988 | ret = rename (local_history_filename, history_filename); | |
989 | saved_errno = errno; | |
990 | if (ret < 0 && saved_errno != EEXIST) | |
991 | warning (_("Could not rename %s to %s: %s"), | |
992 | local_history_filename, history_filename, | |
993 | safe_strerror (saved_errno)); | |
994 | } | |
995 | ||
996 | do_cleanups (old_chain); | |
997 | } | |
998 | ||
b69d38af PA |
999 | /* Read one line from the command input stream `instream' into a local |
1000 | static buffer. The buffer is made bigger as necessary. Returns | |
1001 | the address of the start of the line. | |
9e0b60a8 | 1002 | |
d318976c | 1003 | NULL is returned for end of file. |
9e0b60a8 | 1004 | |
b69d38af PA |
1005 | *If* the instream == stdin & stdin is a terminal, the line read is |
1006 | copied into the global 'saved_command_line' so that it can be | |
1007 | repeated. | |
9e0b60a8 | 1008 | |
b69d38af PA |
1009 | This routine either uses fancy command line editing or simple input |
1010 | as the user has requested. */ | |
10689f25 | 1011 | |
d318976c | 1012 | char * |
38bcc89d | 1013 | command_line_input (const char *prompt_arg, int repeat, char *annotation_suffix) |
9e0b60a8 | 1014 | { |
b69d38af PA |
1015 | static struct buffer cmd_line_buffer; |
1016 | static int cmd_line_buffer_initialized; | |
38bcc89d | 1017 | const char *prompt = prompt_arg; |
b69d38af | 1018 | char *cmd; |
d318976c FN |
1019 | |
1020 | /* The annotation suffix must be non-NULL. */ | |
1021 | if (annotation_suffix == NULL) | |
1022 | annotation_suffix = ""; | |
9e0b60a8 | 1023 | |
d318976c FN |
1024 | if (annotation_level > 1 && instream == stdin) |
1025 | { | |
38bcc89d SM |
1026 | char *local_prompt; |
1027 | ||
224c3ddb SM |
1028 | local_prompt |
1029 | = (char *) alloca ((prompt == NULL ? 0 : strlen (prompt)) | |
1030 | + strlen (annotation_suffix) + 40); | |
38bcc89d | 1031 | if (prompt == NULL) |
d318976c FN |
1032 | local_prompt[0] = '\0'; |
1033 | else | |
38bcc89d | 1034 | strcpy (local_prompt, prompt); |
d318976c FN |
1035 | strcat (local_prompt, "\n\032\032"); |
1036 | strcat (local_prompt, annotation_suffix); | |
1037 | strcat (local_prompt, "\n"); | |
38bcc89d SM |
1038 | |
1039 | prompt = local_prompt; | |
d318976c | 1040 | } |
9e0b60a8 | 1041 | |
b69d38af | 1042 | if (!cmd_line_buffer_initialized) |
9e0b60a8 | 1043 | { |
b69d38af PA |
1044 | buffer_init (&cmd_line_buffer); |
1045 | cmd_line_buffer_initialized = 1; | |
9e0b60a8 | 1046 | } |
9e0b60a8 | 1047 | |
b69d38af PA |
1048 | /* Starting a new command line. */ |
1049 | cmd_line_buffer.used_size = 0; | |
9e0b60a8 | 1050 | |
d318976c FN |
1051 | /* Control-C quits instantly if typed while in this loop |
1052 | since it should not wait until the user types a newline. */ | |
1053 | immediate_quit++; | |
522002f9 | 1054 | QUIT; |
d318976c FN |
1055 | #ifdef STOP_SIGNAL |
1056 | if (job_control) | |
362646f5 | 1057 | signal (STOP_SIGNAL, handle_stop_sig); |
d318976c FN |
1058 | #endif |
1059 | ||
1060 | while (1) | |
9e0b60a8 | 1061 | { |
b69d38af PA |
1062 | char *rl; |
1063 | ||
371d5dec MS |
1064 | /* Make sure that all output has been output. Some machines may |
1065 | let you get away with leaving out some of the gdb_flush, but | |
1066 | not all. */ | |
d318976c FN |
1067 | wrap_here (""); |
1068 | gdb_flush (gdb_stdout); | |
1069 | gdb_flush (gdb_stderr); | |
1070 | ||
1071 | if (source_file_name != NULL) | |
637537d0 | 1072 | ++source_line_number; |
d318976c FN |
1073 | |
1074 | if (annotation_level > 1 && instream == stdin) | |
1075 | { | |
306d9ac5 DC |
1076 | puts_unfiltered ("\n\032\032pre-"); |
1077 | puts_unfiltered (annotation_suffix); | |
1078 | puts_unfiltered ("\n"); | |
d318976c FN |
1079 | } |
1080 | ||
1081 | /* Don't use fancy stuff if not talking to stdin. */ | |
698ba934 | 1082 | if (deprecated_readline_hook && input_from_terminal_p ()) |
d318976c | 1083 | { |
38bcc89d | 1084 | rl = (*deprecated_readline_hook) (prompt); |
d318976c | 1085 | } |
698ba934 | 1086 | else if (command_editing_p && input_from_terminal_p ()) |
d318976c | 1087 | { |
38bcc89d | 1088 | rl = gdb_readline_wrapper (prompt); |
d318976c | 1089 | } |
9e0b60a8 | 1090 | else |
d318976c | 1091 | { |
c5c136ea | 1092 | rl = gdb_readline_no_editing (prompt); |
d318976c | 1093 | } |
9e0b60a8 | 1094 | |
b69d38af PA |
1095 | cmd = handle_line_of_input (&cmd_line_buffer, rl, |
1096 | repeat, annotation_suffix); | |
1097 | if (cmd == (char *) EOF) | |
d318976c | 1098 | { |
b69d38af | 1099 | cmd = NULL; |
d318976c | 1100 | break; |
9e0b60a8 | 1101 | } |
b69d38af | 1102 | if (cmd != NULL) |
d318976c | 1103 | break; |
9e0b60a8 | 1104 | |
38bcc89d | 1105 | prompt = NULL; |
d318976c | 1106 | } |
9e0b60a8 | 1107 | |
d318976c FN |
1108 | #ifdef STOP_SIGNAL |
1109 | if (job_control) | |
1110 | signal (STOP_SIGNAL, SIG_DFL); | |
1111 | #endif | |
1112 | immediate_quit--; | |
9e0b60a8 | 1113 | |
b69d38af | 1114 | return cmd; |
9e0b60a8 JM |
1115 | } |
1116 | \f | |
371d5dec | 1117 | /* Print the GDB banner. */ |
9e0b60a8 | 1118 | void |
fba45db2 | 1119 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1120 | { |
1121 | /* From GNU coding standards, first line is meant to be easy for a | |
1122 | program to parse, and is just canonical program name and version | |
371d5dec | 1123 | number, which starts after last space. */ |
9e0b60a8 | 1124 | |
c16158bc | 1125 | fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version); |
9e0b60a8 | 1126 | |
371d5dec | 1127 | /* Second line is a copyright notice. */ |
9e0b60a8 | 1128 | |
3e43a32a | 1129 | fprintf_filtered (stream, |
edd88788 | 1130 | "Copyright (C) 2016 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1131 | |
1132 | /* Following the copyright is a brief statement that the program is | |
1133 | free software, that users are free to copy and change it on | |
1134 | certain conditions, that it is covered by the GNU GPL, and that | |
371d5dec | 1135 | there is no warranty. */ |
9e0b60a8 JM |
1136 | |
1137 | fprintf_filtered (stream, "\ | |
3e43a32a MS |
1138 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\ |
1139 | \nThis is free software: you are free to change and redistribute it.\n\ | |
0b93d57c | 1140 | There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\ |
b8533aec | 1141 | and \"show warranty\" for details.\n"); |
9e0b60a8 | 1142 | |
371d5dec | 1143 | /* After the required info we print the configuration information. */ |
9e0b60a8 JM |
1144 | |
1145 | fprintf_filtered (stream, "This GDB was configured as \""); | |
6314a349 | 1146 | if (strcmp (host_name, target_name) != 0) |
9e0b60a8 | 1147 | { |
3e43a32a MS |
1148 | fprintf_filtered (stream, "--host=%s --target=%s", |
1149 | host_name, target_name); | |
9e0b60a8 JM |
1150 | } |
1151 | else | |
1152 | { | |
1153 | fprintf_filtered (stream, "%s", host_name); | |
1154 | } | |
6eaaf48b EZ |
1155 | fprintf_filtered (stream, "\".\n\ |
1156 | Type \"show configuration\" for configuration details."); | |
c16158bc JM |
1157 | |
1158 | if (REPORT_BUGS_TO[0]) | |
1159 | { | |
6eaaf48b | 1160 | fprintf_filtered (stream, |
c16158bc | 1161 | _("\nFor bug reporting instructions, please see:\n")); |
1cf55f60 | 1162 | fprintf_filtered (stream, "%s.\n", REPORT_BUGS_TO); |
c16158bc | 1163 | } |
1cf55f60 PM |
1164 | fprintf_filtered (stream, |
1165 | _("Find the GDB manual and other documentation \ | |
1166 | resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n")); | |
1167 | fprintf_filtered (stream, _("For help, type \"help\".\n")); | |
1168 | fprintf_filtered (stream, _("Type \"apropos word\" to search for \ | |
af4c453a | 1169 | commands related to \"word\".")); |
9e0b60a8 | 1170 | } |
6eaaf48b EZ |
1171 | |
1172 | /* Print the details of GDB build-time configuration. */ | |
1173 | void | |
1174 | print_gdb_configuration (struct ui_file *stream) | |
1175 | { | |
1176 | fprintf_filtered (stream, _("\ | |
1177 | This GDB was configured as follows:\n\ | |
1178 | configure --host=%s --target=%s\n\ | |
1179 | "), host_name, target_name); | |
1180 | fprintf_filtered (stream, _("\ | |
1181 | --with-auto-load-dir=%s\n\ | |
1182 | --with-auto-load-safe-path=%s\n\ | |
1183 | "), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH); | |
1184 | #if HAVE_LIBEXPAT | |
1185 | fprintf_filtered (stream, _("\ | |
1186 | --with-expat\n\ | |
1187 | ")); | |
1188 | #else | |
1189 | fprintf_filtered (stream, _("\ | |
1190 | --without-expat\n\ | |
1191 | ")); | |
1192 | #endif | |
1193 | if (GDB_DATADIR[0]) | |
1194 | fprintf_filtered (stream, _("\ | |
1195 | --with-gdb-datadir=%s%s\n\ | |
1196 | "), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : ""); | |
1197 | #ifdef ICONV_BIN | |
1198 | fprintf_filtered (stream, _("\ | |
1199 | --with-iconv-bin=%s%s\n\ | |
1200 | "), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : ""); | |
1201 | #endif | |
1202 | if (JIT_READER_DIR[0]) | |
1203 | fprintf_filtered (stream, _("\ | |
1204 | --with-jit-reader-dir=%s%s\n\ | |
1205 | "), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : ""); | |
1206 | #if HAVE_LIBUNWIND_IA64_H | |
1207 | fprintf_filtered (stream, _("\ | |
1208 | --with-libunwind-ia64\n\ | |
1209 | ")); | |
1210 | #else | |
1211 | fprintf_filtered (stream, _("\ | |
1212 | --without-libunwind-ia64\n\ | |
1213 | ")); | |
1214 | #endif | |
1215 | #if HAVE_LIBLZMA | |
1216 | fprintf_filtered (stream, _("\ | |
1217 | --with-lzma\n\ | |
1218 | ")); | |
1219 | #else | |
1220 | fprintf_filtered (stream, _("\ | |
1221 | --without-lzma\n\ | |
1222 | ")); | |
1223 | #endif | |
1224 | #ifdef WITH_PYTHON_PATH | |
1225 | fprintf_filtered (stream, _("\ | |
1226 | --with-python=%s%s\n\ | |
1227 | "), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : ""); | |
1228 | #endif | |
97d66cc6 EZ |
1229 | #if HAVE_GUILE |
1230 | fprintf_filtered (stream, _("\ | |
1231 | --with-guile\n\ | |
1232 | ")); | |
1233 | #else | |
1234 | fprintf_filtered (stream, _("\ | |
1235 | --without-guile\n\ | |
1236 | ")); | |
1237 | #endif | |
6eaaf48b EZ |
1238 | #ifdef RELOC_SRCDIR |
1239 | fprintf_filtered (stream, _("\ | |
1240 | --with-relocated-sources=%s\n\ | |
1241 | "), RELOC_SRCDIR); | |
1242 | #endif | |
1243 | if (DEBUGDIR[0]) | |
1244 | fprintf_filtered (stream, _("\ | |
1245 | --with-separate-debug-dir=%s%s\n\ | |
1246 | "), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : ""); | |
1247 | if (TARGET_SYSTEM_ROOT[0]) | |
1248 | fprintf_filtered (stream, _("\ | |
1249 | --with-sysroot=%s%s\n\ | |
1250 | "), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : ""); | |
1251 | if (SYSTEM_GDBINIT[0]) | |
1252 | fprintf_filtered (stream, _("\ | |
1253 | --with-system-gdbinit=%s%s\n\ | |
1254 | "), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : ""); | |
ab116149 YQ |
1255 | #if HAVE_LIBBABELTRACE |
1256 | fprintf_filtered (stream, _("\ | |
1257 | --with-babeltrace\n\ | |
1258 | ")); | |
1259 | #else | |
1260 | fprintf_filtered (stream, _("\ | |
1261 | --without-babeltrace\n\ | |
1262 | ")); | |
1263 | #endif | |
48d1d6f5 EZ |
1264 | /* We assume "relocatable" will be printed at least once, thus we always |
1265 | print this text. It's a reasonably safe assumption for now. */ | |
1266 | fprintf_filtered (stream, _("\n\ | |
1267 | (\"Relocatable\" means the directory can be moved with the GDB installation\n\ | |
1268 | tree, and GDB will still find it.)\n\ | |
1269 | ")); | |
6eaaf48b | 1270 | } |
9e0b60a8 | 1271 | \f |
95298e72 | 1272 | |
ab821bc6 PA |
1273 | /* The current top level prompt, settable with "set prompt", and/or |
1274 | with the python `gdb.prompt_hook' hook. */ | |
1275 | static char *top_prompt; | |
9e0b60a8 | 1276 | |
ab821bc6 | 1277 | /* Access method for the GDB prompt string. */ |
95298e72 PM |
1278 | |
1279 | char * | |
ab821bc6 | 1280 | get_prompt (void) |
95298e72 | 1281 | { |
ab821bc6 | 1282 | return top_prompt; |
95298e72 PM |
1283 | } |
1284 | ||
ab821bc6 | 1285 | /* Set method for the GDB prompt string. */ |
95298e72 PM |
1286 | |
1287 | void | |
ab821bc6 | 1288 | set_prompt (const char *s) |
95298e72 | 1289 | { |
ab821bc6 | 1290 | char *p = xstrdup (s); |
95298e72 | 1291 | |
ab821bc6 PA |
1292 | xfree (top_prompt); |
1293 | top_prompt = p; | |
9e0b60a8 | 1294 | } |
9e0b60a8 | 1295 | \f |
c5aa993b | 1296 | |
b0abbc58 | 1297 | struct qt_args |
9e0b60a8 | 1298 | { |
b0abbc58 JJ |
1299 | char *args; |
1300 | int from_tty; | |
1301 | }; | |
9e0b60a8 | 1302 | |
54a012c9 PA |
1303 | /* Callback for iterate_over_inferiors. Kills or detaches the given |
1304 | inferior, depending on how we originally gained control of it. */ | |
1305 | ||
1306 | static int | |
1307 | kill_or_detach (struct inferior *inf, void *args) | |
1308 | { | |
19ba03f4 | 1309 | struct qt_args *qt = (struct qt_args *) args; |
54a012c9 PA |
1310 | struct thread_info *thread; |
1311 | ||
6c95b8df PA |
1312 | if (inf->pid == 0) |
1313 | return 0; | |
1314 | ||
b8fa0bfa PA |
1315 | thread = any_thread_of_process (inf->pid); |
1316 | if (thread != NULL) | |
9e0b60a8 | 1317 | { |
54a012c9 | 1318 | switch_to_thread (thread->ptid); |
c35b1492 PA |
1319 | |
1320 | /* Leave core files alone. */ | |
1321 | if (target_has_execution) | |
1322 | { | |
1323 | if (inf->attach_flag) | |
1324 | target_detach (qt->args, qt->from_tty); | |
1325 | else | |
1326 | target_kill (); | |
1327 | } | |
9e0b60a8 JM |
1328 | } |
1329 | ||
54a012c9 PA |
1330 | return 0; |
1331 | } | |
1332 | ||
b8fa0bfa PA |
1333 | /* Callback for iterate_over_inferiors. Prints info about what GDB |
1334 | will do to each inferior on a "quit". ARG points to a struct | |
1335 | ui_out where output is to be collected. */ | |
1336 | ||
1337 | static int | |
1338 | print_inferior_quit_action (struct inferior *inf, void *arg) | |
1339 | { | |
19ba03f4 | 1340 | struct ui_file *stb = (struct ui_file *) arg; |
b8fa0bfa | 1341 | |
6c95b8df PA |
1342 | if (inf->pid == 0) |
1343 | return 0; | |
1344 | ||
b8fa0bfa PA |
1345 | if (inf->attach_flag) |
1346 | fprintf_filtered (stb, | |
1347 | _("\tInferior %d [%s] will be detached.\n"), inf->num, | |
1348 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1349 | else | |
1350 | fprintf_filtered (stb, | |
1351 | _("\tInferior %d [%s] will be killed.\n"), inf->num, | |
1352 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | /* If necessary, make the user confirm that we should quit. Return | |
1358 | non-zero if we should quit, zero if we shouldn't. */ | |
1359 | ||
1360 | int | |
1361 | quit_confirm (void) | |
1362 | { | |
1363 | struct ui_file *stb; | |
1364 | struct cleanup *old_chain; | |
1365 | char *str; | |
1366 | int qr; | |
1367 | ||
1368 | /* Don't even ask if we're only debugging a core file inferior. */ | |
1369 | if (!have_live_inferiors ()) | |
1370 | return 1; | |
1371 | ||
1372 | /* Build the query string as a single string. */ | |
1373 | stb = mem_fileopen (); | |
1374 | old_chain = make_cleanup_ui_file_delete (stb); | |
1375 | ||
5a5d8ead AB |
1376 | fprintf_filtered (stb, _("A debugging session is active.\n\n")); |
1377 | iterate_over_inferiors (print_inferior_quit_action, stb); | |
1378 | fprintf_filtered (stb, _("\nQuit anyway? ")); | |
b8fa0bfa PA |
1379 | |
1380 | str = ui_file_xstrdup (stb, NULL); | |
1381 | make_cleanup (xfree, str); | |
1382 | ||
1383 | qr = query ("%s", str); | |
1384 | do_cleanups (old_chain); | |
1385 | return qr; | |
1386 | } | |
1387 | ||
18206ca3 PP |
1388 | /* Prepare to exit GDB cleanly by undoing any changes made to the |
1389 | terminal so that we leave the terminal in the state we acquired it. */ | |
1390 | ||
1391 | static void | |
1392 | undo_terminal_modifications_before_exit (void) | |
1393 | { | |
1394 | target_terminal_ours (); | |
1395 | #if defined(TUI) | |
1396 | tui_disable (); | |
1397 | #endif | |
1398 | if (async_command_editing_p) | |
1399 | gdb_disable_readline (); | |
1400 | } | |
1401 | ||
1402 | ||
b0abbc58 JJ |
1403 | /* Quit without asking for confirmation. */ |
1404 | ||
1405 | void | |
1406 | quit_force (char *args, int from_tty) | |
1407 | { | |
1408 | int exit_code = 0; | |
365c70b1 | 1409 | struct qt_args qt; |
b0abbc58 | 1410 | |
18206ca3 PP |
1411 | undo_terminal_modifications_before_exit (); |
1412 | ||
b0abbc58 | 1413 | /* An optional expression may be used to cause gdb to terminate with the |
371d5dec | 1414 | value of that expression. */ |
b0abbc58 JJ |
1415 | if (args) |
1416 | { | |
1417 | struct value *val = parse_and_eval (args); | |
1418 | ||
1419 | exit_code = (int) value_as_long (val); | |
1420 | } | |
4b0ad762 AS |
1421 | else if (return_child_result) |
1422 | exit_code = return_child_result_value; | |
b0abbc58 | 1423 | |
365c70b1 JJ |
1424 | qt.args = args; |
1425 | qt.from_tty = from_tty; | |
1426 | ||
b0abbc58 | 1427 | /* We want to handle any quit errors and exit regardless. */ |
2f9d54cf PA |
1428 | |
1429 | /* Get out of tfind mode, and kill or detach all inferiors. */ | |
492d29ea | 1430 | TRY |
2f9d54cf PA |
1431 | { |
1432 | disconnect_tracing (); | |
1433 | iterate_over_inferiors (kill_or_detach, &qt); | |
1434 | } | |
492d29ea PA |
1435 | CATCH (ex, RETURN_MASK_ALL) |
1436 | { | |
1437 | exception_print (gdb_stderr, ex); | |
1438 | } | |
1439 | END_CATCH | |
2f9d54cf PA |
1440 | |
1441 | /* Give all pushed targets a chance to do minimal cleanup, and pop | |
1442 | them all out. */ | |
492d29ea | 1443 | TRY |
2f9d54cf PA |
1444 | { |
1445 | pop_all_targets (); | |
1446 | } | |
492d29ea PA |
1447 | CATCH (ex, RETURN_MASK_ALL) |
1448 | { | |
1449 | exception_print (gdb_stderr, ex); | |
1450 | } | |
1451 | END_CATCH | |
2f9d54cf PA |
1452 | |
1453 | /* Save the history information if it is appropriate to do so. */ | |
492d29ea | 1454 | TRY |
2f9d54cf | 1455 | { |
35ab155d MB |
1456 | if (write_history_p && history_filename |
1457 | && input_from_terminal_p ()) | |
08b13bdd | 1458 | gdb_safe_append_history (); |
2f9d54cf | 1459 | } |
492d29ea PA |
1460 | CATCH (ex, RETURN_MASK_ALL) |
1461 | { | |
1462 | exception_print (gdb_stderr, ex); | |
1463 | } | |
1464 | END_CATCH | |
2f9d54cf PA |
1465 | |
1466 | /* Do any final cleanups before exiting. */ | |
492d29ea | 1467 | TRY |
2f9d54cf PA |
1468 | { |
1469 | do_final_cleanups (all_cleanups ()); | |
1470 | } | |
492d29ea PA |
1471 | CATCH (ex, RETURN_MASK_ALL) |
1472 | { | |
1473 | exception_print (gdb_stderr, ex); | |
1474 | } | |
1475 | END_CATCH | |
b0abbc58 | 1476 | |
9e0b60a8 JM |
1477 | exit (exit_code); |
1478 | } | |
1479 | ||
698ba934 DJ |
1480 | /* Returns whether GDB is running on a terminal and input is |
1481 | currently coming from that terminal. */ | |
9e0b60a8 JM |
1482 | |
1483 | int | |
fba45db2 | 1484 | input_from_terminal_p (void) |
9e0b60a8 | 1485 | { |
c63a1f86 JK |
1486 | if (batch_flag) |
1487 | return 0; | |
1488 | ||
698ba934 DJ |
1489 | if (gdb_has_a_terminal () && instream == stdin) |
1490 | return 1; | |
1491 | ||
1492 | /* If INSTREAM is unset, and we are not in a user command, we | |
1493 | must be in Insight. That's like having a terminal, for our | |
1494 | purposes. */ | |
1495 | if (instream == NULL && !in_user_command) | |
1496 | return 1; | |
1497 | ||
1498 | return 0; | |
9e0b60a8 JM |
1499 | } |
1500 | \f | |
9e0b60a8 | 1501 | static void |
fba45db2 | 1502 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1503 | { |
dc7eb48e PA |
1504 | /* Can't call dont_repeat here because we're not necessarily reading |
1505 | from stdin. */ | |
1506 | *saved_command_line = 0; | |
9e0b60a8 JM |
1507 | } |
1508 | \f | |
1509 | /* Functions to manipulate command line editing control variables. */ | |
1510 | ||
1511 | /* Number of commands to print in each call to show_commands. */ | |
1512 | #define Hist_print 10 | |
d318976c | 1513 | void |
fba45db2 | 1514 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1515 | { |
1516 | /* Index for history commands. Relative to history_base. */ | |
1517 | int offset; | |
1518 | ||
1519 | /* Number of the history entry which we are planning to display next. | |
1520 | Relative to history_base. */ | |
1521 | static int num = 0; | |
1522 | ||
9e0b60a8 | 1523 | /* Print out some of the commands from the command history. */ |
9e0b60a8 JM |
1524 | |
1525 | if (args) | |
1526 | { | |
1527 | if (args[0] == '+' && args[1] == '\0') | |
1528 | /* "info editing +" should print from the stored position. */ | |
1529 | ; | |
1530 | else | |
1531 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1532 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1533 | } |
1534 | /* "show commands" means print the last Hist_print commands. */ | |
1535 | else | |
1536 | { | |
840a9a1f | 1537 | num = history_length - Hist_print; |
9e0b60a8 JM |
1538 | } |
1539 | ||
1540 | if (num < 0) | |
1541 | num = 0; | |
1542 | ||
1543 | /* If there are at least Hist_print commands, we want to display the last | |
1544 | Hist_print rather than, say, the last 6. */ | |
840a9a1f | 1545 | if (history_length - num < Hist_print) |
9e0b60a8 | 1546 | { |
840a9a1f | 1547 | num = history_length - Hist_print; |
9e0b60a8 JM |
1548 | if (num < 0) |
1549 | num = 0; | |
1550 | } | |
1551 | ||
840a9a1f PA |
1552 | for (offset = num; |
1553 | offset < num + Hist_print && offset < history_length; | |
1554 | offset++) | |
9e0b60a8 JM |
1555 | { |
1556 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1557 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1558 | } |
1559 | ||
1560 | /* The next command we want to display is the next one that we haven't | |
1561 | displayed yet. */ | |
1562 | num += Hist_print; | |
1563 | ||
1564 | /* If the user repeats this command with return, it should do what | |
1565 | "show commands +" does. This is unnecessary if arg is null, | |
1566 | because "show commands +" is not useful after "show commands". */ | |
1567 | if (from_tty && args) | |
1568 | { | |
1569 | args[0] = '+'; | |
1570 | args[1] = '\0'; | |
1571 | } | |
1572 | } | |
1573 | ||
ebfd00d2 | 1574 | /* Update the size of our command history file to HISTORY_SIZE. |
840a9a1f | 1575 | |
ebfd00d2 | 1576 | A HISTORY_SIZE of -1 stands for unlimited. */ |
840a9a1f | 1577 | |
ebfd00d2 PP |
1578 | static void |
1579 | set_readline_history_size (int history_size) | |
1580 | { | |
1581 | gdb_assert (history_size >= -1); | |
840a9a1f | 1582 | |
ebfd00d2 | 1583 | if (history_size == -1) |
840a9a1f | 1584 | unstifle_history (); |
883b9c6c | 1585 | else |
ebfd00d2 PP |
1586 | stifle_history (history_size); |
1587 | } | |
1588 | ||
1589 | /* Called by do_setshow_command. */ | |
1590 | static void | |
1591 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) | |
1592 | { | |
1593 | set_readline_history_size (history_size_setshow_var); | |
9e0b60a8 JM |
1594 | } |
1595 | ||
d318976c | 1596 | void |
fba45db2 | 1597 | set_history (char *args, int from_tty) |
9e0b60a8 | 1598 | { |
3e43a32a MS |
1599 | printf_unfiltered (_("\"set history\" must be followed " |
1600 | "by the name of a history subcommand.\n")); | |
635c7e8a | 1601 | help_list (sethistlist, "set history ", all_commands, gdb_stdout); |
9e0b60a8 JM |
1602 | } |
1603 | ||
d318976c | 1604 | void |
fba45db2 | 1605 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1606 | { |
1607 | cmd_show_list (showhistlist, from_tty, ""); | |
1608 | } | |
1609 | ||
371d5dec | 1610 | int info_verbose = 0; /* Default verbose msgs off. */ |
9e0b60a8 JM |
1611 | |
1612 | /* Called by do_setshow_command. An elaborate joke. */ | |
d318976c | 1613 | void |
fba45db2 | 1614 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1615 | { |
6f937416 | 1616 | const char *cmdname = "verbose"; |
9e0b60a8 JM |
1617 | struct cmd_list_element *showcmd; |
1618 | ||
1619 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1427fe5e | 1620 | gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS); |
9e0b60a8 JM |
1621 | |
1622 | if (info_verbose) | |
1623 | { | |
1624 | c->doc = "Set verbose printing of informational messages."; | |
1625 | showcmd->doc = "Show verbose printing of informational messages."; | |
1626 | } | |
1627 | else | |
1628 | { | |
1629 | c->doc = "Set verbosity."; | |
1630 | showcmd->doc = "Show verbosity."; | |
1631 | } | |
1632 | } | |
1633 | ||
9e0b60a8 | 1634 | /* Init the history buffer. Note that we are called after the init file(s) |
371d5dec MS |
1635 | have been read so that the user can change the history file via his |
1636 | .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1637 | overrides all of this. */ | |
9e0b60a8 JM |
1638 | |
1639 | void | |
fba45db2 | 1640 | init_history (void) |
9e0b60a8 JM |
1641 | { |
1642 | char *tmpenv; | |
1643 | ||
b58c513b | 1644 | tmpenv = getenv ("GDBHISTSIZE"); |
9e0b60a8 | 1645 | if (tmpenv) |
840a9a1f | 1646 | { |
bc460514 | 1647 | long var; |
0fc26caf | 1648 | int saved_errno; |
bc460514 PP |
1649 | char *endptr; |
1650 | ||
1651 | tmpenv = skip_spaces (tmpenv); | |
0fc26caf | 1652 | errno = 0; |
bc460514 | 1653 | var = strtol (tmpenv, &endptr, 10); |
0fc26caf | 1654 | saved_errno = errno; |
bc460514 PP |
1655 | endptr = skip_spaces (endptr); |
1656 | ||
1657 | /* If GDBHISTSIZE is non-numeric then ignore it. If GDBHISTSIZE is the | |
1658 | empty string, a negative number or a huge positive number (larger than | |
1659 | INT_MAX) then set the history size to unlimited. Otherwise set our | |
1660 | history size to the number we have read. This behavior is consistent | |
1661 | with how bash handles HISTSIZE. */ | |
1662 | if (*endptr != '\0') | |
1663 | ; | |
1664 | else if (*tmpenv == '\0' | |
1665 | || var < 0 | |
0fc26caf PP |
1666 | || var > INT_MAX |
1667 | /* On targets where INT_MAX == LONG_MAX, we have to look at | |
1668 | errno after calling strtol to distinguish between a value that | |
1669 | is exactly INT_MAX and an overflowing value that was clamped | |
1670 | to INT_MAX. */ | |
1671 | || (var == INT_MAX && saved_errno == ERANGE)) | |
bc460514 PP |
1672 | history_size_setshow_var = -1; |
1673 | else | |
1674 | history_size_setshow_var = var; | |
840a9a1f | 1675 | } |
bc460514 PP |
1676 | |
1677 | /* If neither the init file nor GDBHISTSIZE has set a size yet, pick the | |
1678 | default. */ | |
1679 | if (history_size_setshow_var == -2) | |
840a9a1f | 1680 | history_size_setshow_var = 256; |
9e0b60a8 | 1681 | |
ebfd00d2 | 1682 | set_readline_history_size (history_size_setshow_var); |
9e0b60a8 JM |
1683 | |
1684 | tmpenv = getenv ("GDBHISTFILE"); | |
1685 | if (tmpenv) | |
1b36a34b | 1686 | history_filename = xstrdup (tmpenv); |
c5aa993b JM |
1687 | else if (!history_filename) |
1688 | { | |
1689 | /* We include the current directory so that if the user changes | |
1690 | directories the file written will be the same as the one | |
1691 | that was read. */ | |
a0b3c4fd | 1692 | #ifdef __MSDOS__ |
eb2f494a | 1693 | /* No leading dots in file names are allowed on MSDOS. */ |
1754f103 MK |
1694 | history_filename = concat (current_directory, "/_gdb_history", |
1695 | (char *)NULL); | |
a0b3c4fd | 1696 | #else |
1754f103 MK |
1697 | history_filename = concat (current_directory, "/.gdb_history", |
1698 | (char *)NULL); | |
a0b3c4fd | 1699 | #endif |
c5aa993b | 1700 | } |
9e0b60a8 JM |
1701 | read_history (history_filename); |
1702 | } | |
1703 | ||
920d2a44 | 1704 | static void |
ab821bc6 PA |
1705 | show_prompt (struct ui_file *file, int from_tty, |
1706 | struct cmd_list_element *c, const char *value) | |
920d2a44 AC |
1707 | { |
1708 | fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value); | |
1709 | } | |
1710 | ||
1711 | static void | |
1712 | show_async_command_editing_p (struct ui_file *file, int from_tty, | |
1713 | struct cmd_list_element *c, const char *value) | |
1714 | { | |
3e43a32a MS |
1715 | fprintf_filtered (file, _("Editing of command lines as " |
1716 | "they are typed is %s.\n"), | |
920d2a44 AC |
1717 | value); |
1718 | } | |
1719 | ||
1720 | static void | |
1721 | show_annotation_level (struct ui_file *file, int from_tty, | |
1722 | struct cmd_list_element *c, const char *value) | |
1723 | { | |
1724 | fprintf_filtered (file, _("Annotation_level is %s.\n"), value); | |
1725 | } | |
1726 | ||
1727 | static void | |
1728 | show_exec_done_display_p (struct ui_file *file, int from_tty, | |
1729 | struct cmd_list_element *c, const char *value) | |
1730 | { | |
3e43a32a MS |
1731 | fprintf_filtered (file, _("Notification of completion for " |
1732 | "asynchronous execution commands is %s.\n"), | |
920d2a44 AC |
1733 | value); |
1734 | } | |
6dea1fbd | 1735 | |
8d551b02 DE |
1736 | /* New values of the "data-directory" parameter are staged here. */ |
1737 | static char *staged_gdb_datadir; | |
1738 | ||
6dea1fbd JK |
1739 | /* "set" command for the gdb_datadir configuration variable. */ |
1740 | ||
1741 | static void | |
1742 | set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c) | |
1743 | { | |
8d551b02 | 1744 | set_gdb_data_directory (staged_gdb_datadir); |
6dea1fbd JK |
1745 | observer_notify_gdb_datadir_changed (); |
1746 | } | |
1747 | ||
8d551b02 DE |
1748 | /* "show" command for the gdb_datadir configuration variable. */ |
1749 | ||
1750 | static void | |
1751 | show_gdb_datadir (struct ui_file *file, int from_tty, | |
1752 | struct cmd_list_element *c, const char *value) | |
1753 | { | |
1754 | fprintf_filtered (file, _("GDB's data directory is \"%s\".\n"), | |
1755 | gdb_datadir); | |
1756 | } | |
1757 | ||
97c85fc6 MB |
1758 | static void |
1759 | set_history_filename (char *args, int from_tty, struct cmd_list_element *c) | |
1760 | { | |
1761 | /* We include the current directory so that if the user changes | |
1762 | directories the file written will be the same as the one | |
1763 | that was read. */ | |
1764 | if (!IS_ABSOLUTE_PATH (history_filename)) | |
1765 | history_filename = reconcat (history_filename, current_directory, "/", | |
1766 | history_filename, (char *) NULL); | |
1767 | } | |
1768 | ||
9e0b60a8 | 1769 | static void |
fba45db2 | 1770 | init_main (void) |
9e0b60a8 | 1771 | { |
ab821bc6 PA |
1772 | /* Initialize the prompt to a simple "(gdb) " prompt or to whatever |
1773 | the DEFAULT_PROMPT is. */ | |
1774 | set_prompt (DEFAULT_PROMPT); | |
1775 | ||
9e0b60a8 JM |
1776 | /* Set the important stuff up for command editing. */ |
1777 | command_editing_p = 1; | |
9e0b60a8 | 1778 | history_expansion_p = 0; |
452a569e | 1779 | write_history_p = 0; |
9e0b60a8 JM |
1780 | |
1781 | /* Setup important stuff for command line editing. */ | |
67c296a2 | 1782 | rl_completion_word_break_hook = gdb_completion_word_break_characters; |
38017ce8 | 1783 | rl_completion_entry_function = readline_line_completion_function; |
51065942 | 1784 | rl_completer_word_break_characters = default_word_break_characters (); |
d318976c | 1785 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); |
82083d6d | 1786 | rl_completion_display_matches_hook = cli_display_match_list; |
9e0b60a8 | 1787 | rl_readline_name = "gdb"; |
7cb3ec5e | 1788 | rl_terminal_name = getenv ("TERM"); |
9e0b60a8 | 1789 | |
467d8519 TT |
1790 | /* The name for this defun comes from Bash, where it originated. |
1791 | 15 is Control-o, the same binding this function has in Bash. */ | |
1792 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1793 | ||
4d28ad1e | 1794 | add_setshow_string_cmd ("prompt", class_support, |
ab821bc6 | 1795 | &top_prompt, |
3e43a32a MS |
1796 | _("Set gdb's prompt"), |
1797 | _("Show gdb's prompt"), | |
ab821bc6 PA |
1798 | NULL, NULL, |
1799 | show_prompt, | |
4d28ad1e | 1800 | &setlist, &showlist); |
9e0b60a8 | 1801 | |
1bedd215 | 1802 | add_com ("dont-repeat", class_support, dont_repeat_command, _("\ |
3e43a32a MS |
1803 | Don't repeat this command.\nPrimarily \ |
1804 | used inside of user-defined commands that should not be repeated when\n\ | |
1bedd215 | 1805 | hitting return.")); |
9e0b60a8 | 1806 | |
5bf193a2 AC |
1807 | add_setshow_boolean_cmd ("editing", class_support, |
1808 | &async_command_editing_p, _("\ | |
1809 | Set editing of command lines as they are typed."), _("\ | |
1810 | Show editing of command lines as they are typed."), _("\ | |
9e0b60a8 JM |
1811 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
1812 | Without an argument, command line editing is enabled. To edit, use\n\ | |
5bf193a2 AC |
1813 | EMACS-like or VI-like commands like control-P or ESC."), |
1814 | set_async_editing_command, | |
920d2a44 | 1815 | show_async_command_editing_p, |
5bf193a2 AC |
1816 | &setlist, &showlist); |
1817 | ||
1818 | add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\ | |
1819 | Set saving of the history record on exit."), _("\ | |
1820 | Show saving of the history record on exit."), _("\ | |
9e0b60a8 | 1821 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
5bf193a2 AC |
1822 | Without an argument, saving is enabled."), |
1823 | NULL, | |
920d2a44 | 1824 | show_write_history_p, |
5bf193a2 | 1825 | &sethistlist, &showhistlist); |
9e0b60a8 | 1826 | |
ebfd00d2 PP |
1827 | add_setshow_zuinteger_unlimited_cmd ("size", no_class, |
1828 | &history_size_setshow_var, _("\ | |
4d28ad1e AC |
1829 | Set the size of the command history,"), _("\ |
1830 | Show the size of the command history,"), _("\ | |
f81d1120 PA |
1831 | ie. the number of previous commands to keep a record of.\n\ |
1832 | If set to \"unlimited\", the number of commands kept in the history\n\ | |
1833 | list is unlimited. This defaults to the value of the environment\n\ | |
b58c513b | 1834 | variable \"GDBHISTSIZE\", or to 256 if this variable is not set."), |
883b9c6c YQ |
1835 | set_history_size_command, |
1836 | show_history_size, | |
1837 | &sethistlist, &showhistlist); | |
4d28ad1e | 1838 | |
fc637f04 PP |
1839 | add_setshow_zuinteger_unlimited_cmd ("remove-duplicates", no_class, |
1840 | &history_remove_duplicates, _("\ | |
1841 | Set how far back in history to look for and remove duplicate entries."), _("\ | |
1842 | Show how far back in history to look for and remove duplicate entries."), _("\ | |
1843 | If set to a nonzero value N, GDB will look back at the last N history entries\n\ | |
1844 | and remove the first history entry that is a duplicate of the most recent\n\ | |
1845 | entry, each time a new history entry is added.\n\ | |
1846 | If set to \"unlimited\", this lookbehind is unbounded.\n\ | |
1847 | Only history entries added during this session are considered for removal.\n\ | |
1848 | If set to 0, removal of duplicate history entries is disabled.\n\ | |
1849 | By default this option is set to 0."), | |
1850 | NULL, | |
1851 | show_history_remove_duplicates, | |
1852 | &sethistlist, &showhistlist); | |
1853 | ||
4d28ad1e AC |
1854 | add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\ |
1855 | Set the filename in which to record the command history"), _("\ | |
1856 | Show the filename in which to record the command history"), _("\ | |
1857 | (the list of previous commands of which a record is kept)."), | |
97c85fc6 | 1858 | set_history_filename, |
920d2a44 | 1859 | show_history_filename, |
4d28ad1e | 1860 | &sethistlist, &showhistlist); |
9e0b60a8 | 1861 | |
e360902b | 1862 | add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\ |
5bf193a2 AC |
1863 | Set whether to confirm potentially dangerous operations."), _("\ |
1864 | Show whether to confirm potentially dangerous operations."), NULL, | |
1865 | NULL, | |
e360902b | 1866 | show_confirm, |
5bf193a2 | 1867 | &setlist, &showlist); |
9e0b60a8 | 1868 | |
85c07804 AC |
1869 | add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\ |
1870 | Set annotation_level."), _("\ | |
1871 | Show annotation_level."), _("\ | |
9e0b60a8 | 1872 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
85c07804 | 1873 | 2 == output annotated suitably for use by programs that control GDB."), |
ab821bc6 | 1874 | NULL, |
920d2a44 | 1875 | show_annotation_level, |
85c07804 | 1876 | &setlist, &showlist); |
362646f5 | 1877 | |
5bf193a2 AC |
1878 | add_setshow_boolean_cmd ("exec-done-display", class_support, |
1879 | &exec_done_display_p, _("\ | |
1880 | Set notification of completion for asynchronous execution commands."), _("\ | |
1881 | Show notification of completion for asynchronous execution commands."), _("\ | |
1882 | Use \"on\" to enable the notification, and \"off\" to disable it."), | |
1883 | NULL, | |
920d2a44 | 1884 | show_exec_done_display_p, |
5bf193a2 | 1885 | &setlist, &showlist); |
b14b1491 TT |
1886 | |
1887 | add_setshow_filename_cmd ("data-directory", class_maintenance, | |
8d551b02 | 1888 | &staged_gdb_datadir, _("Set GDB's data directory."), |
b14b1491 TT |
1889 | _("Show GDB's data directory."), |
1890 | _("\ | |
1891 | When set, GDB uses the specified path to search for data files."), | |
8d551b02 | 1892 | set_gdb_datadir, show_gdb_datadir, |
b14b1491 TT |
1893 | &setlist, |
1894 | &showlist); | |
9e0b60a8 | 1895 | } |
64cdedad EZ |
1896 | |
1897 | void | |
1898 | gdb_init (char *argv0) | |
1899 | { | |
1900 | if (pre_init_ui_hook) | |
1901 | pre_init_ui_hook (); | |
1902 | ||
371d5dec | 1903 | /* Run the init function of each source file. */ |
64cdedad | 1904 | |
64cdedad EZ |
1905 | #ifdef __MSDOS__ |
1906 | /* Make sure we return to the original directory upon exit, come | |
1907 | what may, since the OS doesn't do that for us. */ | |
1908 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1909 | #endif | |
1910 | ||
371d5dec MS |
1911 | init_cmd_lists (); /* This needs to be done first. */ |
1912 | initialize_targets (); /* Setup target_terminal macros for utils.c. */ | |
1913 | initialize_utils (); /* Make errors and warnings possible. */ | |
9dea9163 | 1914 | |
24b73f8e PP |
1915 | init_page_info (); |
1916 | ||
9dea9163 | 1917 | /* Here is where we call all the _initialize_foo routines. */ |
64cdedad | 1918 | initialize_all_files (); |
9dea9163 | 1919 | |
6c95b8df PA |
1920 | /* This creates the current_program_space. Do this after all the |
1921 | _initialize_foo routines have had a chance to install their | |
1922 | per-sspace data keys. Also do this before | |
1923 | initialize_current_architecture is called, because it accesses | |
1924 | exec_bfd of the current program space. */ | |
1925 | initialize_progspace (); | |
1926 | initialize_inferiors (); | |
64cdedad EZ |
1927 | initialize_current_architecture (); |
1928 | init_cli_cmds(); | |
371d5dec | 1929 | init_main (); /* But that omits this file! Do it now. */ |
64cdedad | 1930 | |
0ea3f30e DJ |
1931 | initialize_stdin_serial (); |
1932 | ||
6a06d660 PP |
1933 | /* Take a snapshot of our tty state before readline/ncurses have had a chance |
1934 | to alter it. */ | |
1935 | set_initial_gdb_ttystate (); | |
1936 | ||
362646f5 | 1937 | async_init_signals (); |
64cdedad | 1938 | |
371d5dec MS |
1939 | /* We need a default language for parsing expressions, so simple |
1940 | things like "set width 0" won't fail if no language is explicitly | |
1941 | set in a config file or implicitly set by reading an executable | |
1942 | during startup. */ | |
64cdedad | 1943 | set_language (language_c); |
371d5dec | 1944 | expected_language = current_language; /* Don't warn about the change. */ |
64cdedad | 1945 | |
6dddc817 | 1946 | /* Python initialization, for example, can require various commands to be |
371d5dec MS |
1947 | installed. For example "info pretty-printer" needs the "info" |
1948 | prefix to be installed. Keep things simple and just do final | |
6dddc817 DE |
1949 | script initialization here. */ |
1950 | finish_ext_lang_initialization (); | |
64cdedad | 1951 | } |