Commit | Line | Data |
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c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
a752853e | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 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" |
60250e8b | 29 | #include "exceptions.h" |
042be3a9 | 30 | #include <signal.h> |
c906108c | 31 | #include "target.h" |
68c765e2 | 32 | #include "target-dcache.h" |
c906108c SS |
33 | #include "breakpoint.h" |
34 | #include "gdbtypes.h" | |
35 | #include "expression.h" | |
36 | #include "value.h" | |
37 | #include "language.h" | |
c5aa993b | 38 | #include "terminal.h" /* For job_control. */ |
c906108c | 39 | #include "annotate.h" |
c5f0f3d0 | 40 | #include "completer.h" |
c906108c | 41 | #include "top.h" |
d4f3574e | 42 | #include "version.h" |
210661e7 | 43 | #include "serial.h" |
d16aafd8 | 44 | #include "doublest.h" |
f9c696d2 | 45 | #include "gdb_assert.h" |
f17517ea | 46 | #include "main.h" |
2e03ee74 | 47 | #include "event-loop.h" |
8ea051c5 | 48 | #include "gdbthread.h" |
6dddc817 | 49 | #include "extension.h" |
b4a14fd0 | 50 | #include "interps.h" |
6dea1fbd | 51 | #include "observer.h" |
bd712aed | 52 | #include "maint.h" |
97c85fc6 | 53 | #include "filenames.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" |
0e9f083f | 65 | #include <string.h> |
53ce3c39 | 66 | #include <sys/stat.h> |
c906108c | 67 | #include <ctype.h> |
8b93c638 JM |
68 | #include "ui-out.h" |
69 | #include "cli-out.h" | |
2f9d54cf | 70 | #include "tracepoint.h" |
93d6eb10 | 71 | #include "inf-loop.h" |
c906108c | 72 | |
ca7b0bbc TT |
73 | extern void initialize_all_files (void); |
74 | ||
95298e72 PM |
75 | #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt |
76 | #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix | |
77 | #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix | |
78 | ||
371d5dec | 79 | /* Default command line prompt. This is overriden in some configs. */ |
104c1213 JM |
80 | |
81 | #ifndef DEFAULT_PROMPT | |
82 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
83 | #endif |
84 | ||
e655c1a2 | 85 | /* Initialization file name for gdb. This is host-dependent. */ |
eaae3919 | 86 | |
e655c1a2 | 87 | const char gdbinit[] = GDBINIT; |
c906108c SS |
88 | |
89 | int inhibit_gdbinit = 0; | |
90 | ||
c906108c SS |
91 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
92 | ||
050a2e1d PA |
93 | /* Flag for whether we want to confirm potentially dangerous |
94 | operations. Default is yes. */ | |
95 | ||
e360902b | 96 | int confirm = 1; |
c906108c | 97 | |
920d2a44 | 98 | static void |
e360902b | 99 | show_confirm (struct ui_file *file, int from_tty, |
920d2a44 AC |
100 | struct cmd_list_element *c, const char *value) |
101 | { | |
3e43a32a MS |
102 | fprintf_filtered (file, _("Whether to confirm potentially " |
103 | "dangerous operations is %s.\n"), | |
920d2a44 AC |
104 | value); |
105 | } | |
c906108c | 106 | |
371d5dec MS |
107 | /* stdio stream that command input is being read from. Set to stdin |
108 | normally. Set by source_command to the file we are sourcing. Set | |
109 | to NULL if we are executing a user-defined command or interacting | |
110 | via a GUI. */ | |
c906108c SS |
111 | |
112 | FILE *instream; | |
113 | ||
698ba934 DJ |
114 | /* Flag to indicate whether a user defined command is currently running. */ |
115 | ||
116 | int in_user_command; | |
117 | ||
c906108c SS |
118 | /* Current working directory. */ |
119 | ||
120 | char *current_directory; | |
121 | ||
122 | /* The directory name is actually stored here (usually). */ | |
123 | char gdb_dirbuf[1024]; | |
124 | ||
125 | /* Function to call before reading a command, if nonzero. | |
126 | The function receives two args: an input stream, | |
127 | and a prompt string. */ | |
128 | ||
507f3c78 | 129 | void (*window_hook) (FILE *, char *); |
c906108c | 130 | |
c906108c SS |
131 | /* Buffer used for reading command lines, and the size |
132 | allocated for it so far. */ | |
133 | ||
dc7eb48e PA |
134 | char *saved_command_line; |
135 | int saved_command_line_size = 100; | |
c906108c SS |
136 | |
137 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 138 | affects things like recording into the command history, commands |
c906108c SS |
139 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
140 | whatever) can issue its own commands and also send along commands | |
141 | from the user, and have the user not notice that the user interface | |
142 | is issuing commands too. */ | |
143 | int server_command; | |
144 | ||
371d5dec | 145 | /* Timeout limit for response from target. */ |
c906108c | 146 | |
ce808e91 AC |
147 | /* The default value has been changed many times over the years. It |
148 | was originally 5 seconds. But that was thought to be a long time | |
149 | to sit and wait, so it was changed to 2 seconds. That was thought | |
150 | to be plenty unless the connection was going through some terminal | |
151 | server or multiplexer or other form of hairy serial connection. | |
152 | ||
153 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
154 | it began being used in other remote-* targets. It appears that the | |
155 | default was changed to 20 seconds at that time, perhaps because the | |
85a453d5 | 156 | Renesas E7000 ICE didn't always respond in a timely manner. |
ce808e91 AC |
157 | |
158 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
159 | 20 seconds is far worse. This demonstrates the difficulty of using | |
160 | a single variable for all protocol timeouts. | |
161 | ||
162 | As remote.c is used much more than remote-e7000.c, it was changed | |
371d5dec | 163 | back to 2 seconds in 1999. */ |
ce808e91 AC |
164 | |
165 | int remote_timeout = 2; | |
c906108c SS |
166 | |
167 | /* Non-zero tells remote* modules to output debugging info. */ | |
168 | ||
169 | int remote_debug = 0; | |
170 | ||
6dd77b81 RH |
171 | /* Sbrk location on entry to main. Used for statistics only. */ |
172 | #ifdef HAVE_SBRK | |
173 | char *lim_at_start; | |
174 | #endif | |
175 | ||
c906108c SS |
176 | /* Hooks for alternate command interfaces. */ |
177 | ||
371d5dec MS |
178 | /* Called after most modules have been initialized, but before taking |
179 | users command file. | |
1ad24239 | 180 | |
371d5dec MS |
181 | If the UI fails to initialize and it wants GDB to continue using |
182 | the default UI, then it should clear this hook before returning. */ | |
c906108c | 183 | |
9a4105ab | 184 | void (*deprecated_init_ui_hook) (char *argv0); |
7a292a7a | 185 | |
371d5dec MS |
186 | /* This hook is called from within gdb's many mini-event loops which |
187 | could steal control from a real user interface's event loop. It | |
188 | returns non-zero if the user is requesting a detach, zero | |
189 | otherwise. */ | |
7a292a7a | 190 | |
98bbd631 | 191 | int (*deprecated_ui_loop_hook) (int); |
c906108c | 192 | |
c906108c | 193 | |
c906108c SS |
194 | /* Called from print_frame_info to list the line we stopped in. */ |
195 | ||
371d5dec MS |
196 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, |
197 | int line, | |
198 | int stopline, | |
199 | int noerror); | |
c906108c SS |
200 | /* Replaces most of query. */ |
201 | ||
9a4105ab | 202 | int (*deprecated_query_hook) (const char *, va_list); |
c906108c SS |
203 | |
204 | /* Replaces most of warning. */ | |
205 | ||
9a4105ab | 206 | void (*deprecated_warning_hook) (const char *, va_list); |
c906108c | 207 | |
9a4105ab AC |
208 | /* These three functions support getting lines of text from the user. |
209 | They are used in sequence. First deprecated_readline_begin_hook is | |
210 | called with a text string that might be (for example) a message for | |
211 | the user to type in a sequence of commands to be executed at a | |
212 | breakpoint. If this function calls back to a GUI, it might take | |
213 | this opportunity to pop up a text interaction window with this | |
214 | message. Next, deprecated_readline_hook is called with a prompt | |
215 | that is emitted prior to collecting the user input. It can be | |
216 | called multiple times. Finally, deprecated_readline_end_hook is | |
217 | called to notify the GUI that we are done with the interaction | |
218 | window and it can close it. */ | |
c906108c | 219 | |
9a4105ab AC |
220 | void (*deprecated_readline_begin_hook) (char *, ...); |
221 | char *(*deprecated_readline_hook) (char *); | |
222 | void (*deprecated_readline_end_hook) (void); | |
c906108c | 223 | |
6426a772 | 224 | /* Called as appropriate to notify the interface that we have attached |
371d5dec | 225 | to or detached from an already running process. */ |
6426a772 | 226 | |
9a4105ab AC |
227 | void (*deprecated_attach_hook) (void); |
228 | void (*deprecated_detach_hook) (void); | |
6426a772 | 229 | |
371d5dec MS |
230 | /* Called during long calculations to allow GUI to repair window |
231 | damage, and to check for stop buttons, etc... */ | |
c906108c | 232 | |
9a4105ab | 233 | void (*deprecated_interactive_hook) (void); |
c906108c | 234 | |
c378eb4e | 235 | /* Tell the GUI someone changed the register REGNO. -1 means |
c906108c | 236 | that the caller does not know which register changed or |
371d5dec | 237 | that several registers have changed (see value_assign). */ |
9a4105ab | 238 | void (*deprecated_register_changed_hook) (int regno); |
c906108c | 239 | |
371d5dec MS |
240 | /* Called when going to wait for the target. Usually allows the GUI |
241 | to run while waiting for target events. */ | |
c906108c | 242 | |
9a4105ab | 243 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, |
47608cb1 PA |
244 | struct target_waitstatus *status, |
245 | int options); | |
c906108c | 246 | |
371d5dec MS |
247 | /* Used by UI as a wrapper around command execution. May do various |
248 | things like enabling/disabling buttons, etc... */ | |
c906108c | 249 | |
371d5dec MS |
250 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, |
251 | char *cmd, int from_tty); | |
c906108c SS |
252 | |
253 | /* Called when the current thread changes. Argument is thread id. */ | |
254 | ||
9a4105ab | 255 | void (*deprecated_context_hook) (int id); |
c906108c | 256 | |
c906108c SS |
257 | /* Handler for SIGHUP. */ |
258 | ||
259 | #ifdef SIGHUP | |
392a587b | 260 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 | 261 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 262 | event-top.c into this file, top.c. */ |
b2cd6b29 JM |
263 | /* static */ void |
264 | quit_cover (void) | |
c906108c | 265 | { |
e360902b PA |
266 | /* Stop asking user for confirmation --- we're exiting. This |
267 | prevents asking the user dumb questions. */ | |
268 | confirm = 0; | |
c5aa993b | 269 | quit_command ((char *) 0, 0); |
c906108c SS |
270 | } |
271 | #endif /* defined SIGHUP */ | |
272 | \f | |
7a9dd1b2 | 273 | /* Line number we are currently in, in a file which is being sourced. */ |
392a587b | 274 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 275 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 276 | event-top.c into this file, top.c. */ |
cd0fc7c3 | 277 | /* static */ int source_line_number; |
c906108c SS |
278 | |
279 | /* Name of the file we are sourcing. */ | |
392a587b | 280 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 281 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 282 | event-top.c into this file, top.c. */ |
05159abe | 283 | /* static */ const char *source_file_name; |
c906108c | 284 | |
c906108c SS |
285 | /* Clean up on error during a "source" command (or execution of a |
286 | user-defined command). */ | |
287 | ||
d318976c | 288 | void |
e41a3b1a | 289 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
290 | { |
291 | /* Restore the previous input stream. */ | |
292 | instream = stream; | |
293 | } | |
294 | ||
295 | /* Read commands from STREAM. */ | |
296 | void | |
fba45db2 | 297 | read_command_file (FILE *stream) |
c906108c SS |
298 | { |
299 | struct cleanup *cleanups; | |
300 | ||
e41a3b1a | 301 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 302 | instream = stream; |
c5aa993b | 303 | command_loop (); |
c906108c SS |
304 | do_cleanups (cleanups); |
305 | } | |
306 | \f | |
507f3c78 | 307 | void (*pre_init_ui_hook) (void); |
c906108c | 308 | |
e41a3b1a | 309 | #ifdef __MSDOS__ |
70976b65 | 310 | static void |
e41a3b1a AC |
311 | do_chdir_cleanup (void *old_dir) |
312 | { | |
313 | chdir (old_dir); | |
b8c9b27d | 314 | xfree (old_dir); |
e41a3b1a AC |
315 | } |
316 | #endif | |
317 | ||
028d0ed5 | 318 | struct cleanup * |
4e5d721f DE |
319 | prepare_execute_command (void) |
320 | { | |
028d0ed5 TJB |
321 | struct value *mark; |
322 | struct cleanup *cleanup; | |
323 | ||
324 | mark = value_mark (); | |
325 | cleanup = make_cleanup_value_free_to_mark (mark); | |
4e5d721f | 326 | |
371d5dec MS |
327 | /* With multiple threads running while the one we're examining is |
328 | stopped, the dcache can get stale without us being able to detect | |
329 | it. For the duration of the command, though, use the dcache to | |
330 | help things like backtrace. */ | |
4e5d721f DE |
331 | if (non_stop) |
332 | target_dcache_invalidate (); | |
028d0ed5 TJB |
333 | |
334 | return cleanup; | |
4e5d721f DE |
335 | } |
336 | ||
77cce10f PA |
337 | /* Tell the user if the language has changed (except first time) after |
338 | executing a command. */ | |
339 | ||
340 | void | |
341 | check_frame_language_change (void) | |
342 | { | |
343 | static int warned = 0; | |
344 | ||
345 | /* First make sure that a new frame has been selected, in case the | |
346 | command or the hooks changed the program state. */ | |
347 | deprecated_safe_get_selected_frame (); | |
348 | if (current_language != expected_language) | |
349 | { | |
350 | if (language_mode == language_mode_auto && info_verbose) | |
351 | { | |
352 | language_info (1); /* Print what changed. */ | |
353 | } | |
354 | warned = 0; | |
355 | } | |
356 | ||
357 | /* Warn the user if the working language does not match the language | |
358 | of the current frame. Only warn the user if we are actually | |
359 | running the program, i.e. there is a stack. */ | |
360 | /* FIXME: This should be cacheing the frame and only running when | |
361 | the frame changes. */ | |
362 | ||
363 | if (has_stack_frames ()) | |
364 | { | |
365 | enum language flang; | |
366 | ||
367 | flang = get_frame_language (); | |
368 | if (!warned | |
369 | && flang != language_unknown | |
370 | && flang != current_language->la_language) | |
371 | { | |
372 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
373 | warned = 1; | |
374 | } | |
375 | } | |
376 | } | |
377 | ||
648bf667 | 378 | /* Execute the line P as a command, in the current user context. |
d318976c | 379 | Pass FROM_TTY as second argument to the defining function. */ |
c906108c | 380 | |
d318976c FN |
381 | void |
382 | execute_command (char *p, int from_tty) | |
c906108c | 383 | { |
353d1d73 | 384 | struct cleanup *cleanup_if_error, *cleanup; |
52f0bd74 | 385 | struct cmd_list_element *c; |
d318976c | 386 | char *line; |
4e5d721f | 387 | |
353d1d73 | 388 | cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
028d0ed5 | 389 | cleanup = prepare_execute_command (); |
c906108c | 390 | |
d318976c FN |
391 | /* Force cleanup of any alloca areas if using C alloca instead of |
392 | a builtin alloca. */ | |
393 | alloca (0); | |
c906108c | 394 | |
d318976c FN |
395 | /* This can happen when command_line_input hits end of file. */ |
396 | if (p == NULL) | |
5fe41fbf TT |
397 | { |
398 | do_cleanups (cleanup); | |
5ae85e44 | 399 | discard_cleanups (cleanup_if_error); |
5fe41fbf TT |
400 | return; |
401 | } | |
c906108c | 402 | |
49d03eab | 403 | target_log_command (p); |
8b93c638 | 404 | |
d318976c FN |
405 | while (*p == ' ' || *p == '\t') |
406 | p++; | |
407 | if (*p) | |
8b93c638 | 408 | { |
6f937416 | 409 | const char *cmd = p; |
d318976c | 410 | char *arg; |
90e28950 TT |
411 | int was_sync = sync_execution; |
412 | ||
d318976c | 413 | line = p; |
8b93c638 | 414 | |
16026cd7 AS |
415 | /* If trace-commands is set then this will print this command. */ |
416 | print_command_trace (p); | |
417 | ||
6f937416 PA |
418 | c = lookup_cmd (&cmd, cmdlist, "", 0, 1); |
419 | p = (char *) cmd; | |
8b93c638 | 420 | |
d318976c FN |
421 | /* Pass null arg rather than an empty one. */ |
422 | arg = *p ? p : 0; | |
8b93c638 | 423 | |
9f60d481 AC |
424 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
425 | while the is_complete_command(cfunc) test is just plain | |
426 | bogus. They should both be replaced by a test of the form | |
427 | c->strip_trailing_white_space_p. */ | |
428 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
429 | can't be replaced with func. This is because it is the | |
430 | cfunc, and not the func, that has the value that the | |
431 | is_complete_command hack is testing for. */ | |
432 | /* Clear off trailing whitespace, except for set and complete | |
433 | command. */ | |
d318976c FN |
434 | if (arg |
435 | && c->type != set_cmd | |
bbaca940 | 436 | && !is_complete_command (c)) |
8b93c638 | 437 | { |
d318976c FN |
438 | p = arg + strlen (arg) - 1; |
439 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
440 | p--; | |
441 | *(p + 1) = '\0'; | |
8b93c638 JM |
442 | } |
443 | ||
371d5dec | 444 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 445 | execute_cmd_pre_hook (c); |
c906108c | 446 | |
1f2bdf09 | 447 | if (c->deprecated_warn_user) |
6f937416 | 448 | deprecated_cmd_warning (line); |
c906108c | 449 | |
7d74f244 DE |
450 | /* c->user_commands would be NULL in the case of a python command. */ |
451 | if (c->class == class_user && c->user_commands) | |
d318976c | 452 | execute_user_command (c, arg); |
5b9afe8a YQ |
453 | else if (c->type == set_cmd) |
454 | do_set_command (arg, from_tty, c); | |
455 | else if (c->type == show_cmd) | |
456 | do_show_command (arg, from_tty, c); | |
f436dd25 | 457 | else if (!cmd_func_p (c)) |
8a3fe4f8 | 458 | error (_("That is not a command, just a help topic.")); |
9a4105ab | 459 | else if (deprecated_call_command_hook) |
050a2e1d | 460 | deprecated_call_command_hook (c, arg, from_tty); |
d318976c | 461 | else |
050a2e1d | 462 | cmd_func (c, arg, from_tty); |
b4a14fd0 PA |
463 | |
464 | /* If the interpreter is in sync mode (we're running a user | |
465 | command's list, running command hooks or similars), and we | |
466 | just ran a synchronous command that started the target, wait | |
467 | for that command to end. */ | |
90e28950 | 468 | if (!interpreter_async && !was_sync && sync_execution) |
b4a14fd0 PA |
469 | { |
470 | while (gdb_do_one_event () >= 0) | |
471 | if (!sync_execution) | |
472 | break; | |
473 | } | |
474 | ||
371d5dec | 475 | /* If this command has been post-hooked, run the hook last. */ |
5913bcb0 | 476 | execute_cmd_post_hook (c); |
c906108c | 477 | |
c906108c SS |
478 | } |
479 | ||
77cce10f | 480 | check_frame_language_change (); |
028d0ed5 | 481 | |
353d1d73 JK |
482 | do_cleanups (cleanup); |
483 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
484 | } |
485 | ||
5da1313b JK |
486 | /* Run execute_command for P and FROM_TTY. Capture its output into the |
487 | returned string, do not display it to the screen. BATCH_FLAG will be | |
488 | temporarily set to true. */ | |
489 | ||
490 | char * | |
491 | execute_command_to_string (char *p, int from_tty) | |
492 | { | |
493 | struct ui_file *str_file; | |
494 | struct cleanup *cleanup; | |
495 | char *retval; | |
496 | ||
497 | /* GDB_STDOUT should be better already restored during these | |
498 | restoration callbacks. */ | |
499 | cleanup = set_batch_flag_and_make_cleanup_restore_page_info (); | |
500 | ||
b4a14fd0 PA |
501 | make_cleanup_restore_integer (&interpreter_async); |
502 | interpreter_async = 0; | |
503 | ||
5da1313b JK |
504 | str_file = mem_fileopen (); |
505 | ||
8d4d924b | 506 | make_cleanup_ui_file_delete (str_file); |
5da1313b JK |
507 | make_cleanup_restore_ui_file (&gdb_stdout); |
508 | make_cleanup_restore_ui_file (&gdb_stderr); | |
8d4d924b JK |
509 | make_cleanup_restore_ui_file (&gdb_stdlog); |
510 | make_cleanup_restore_ui_file (&gdb_stdtarg); | |
511 | make_cleanup_restore_ui_file (&gdb_stdtargerr); | |
512 | ||
79a45e25 | 513 | if (ui_out_redirect (current_uiout, str_file) < 0) |
8d4d924b JK |
514 | warning (_("Current output protocol does not support redirection")); |
515 | else | |
79a45e25 | 516 | make_cleanup_ui_out_redirect_pop (current_uiout); |
5da1313b JK |
517 | |
518 | gdb_stdout = str_file; | |
519 | gdb_stderr = str_file; | |
8d4d924b JK |
520 | gdb_stdlog = str_file; |
521 | gdb_stdtarg = str_file; | |
522 | gdb_stdtargerr = str_file; | |
5da1313b JK |
523 | |
524 | execute_command (p, from_tty); | |
525 | ||
526 | retval = ui_file_xstrdup (str_file, NULL); | |
527 | ||
528 | do_cleanups (cleanup); | |
529 | ||
530 | return retval; | |
531 | } | |
532 | ||
d318976c FN |
533 | /* Read commands from `instream' and execute them |
534 | until end of file or error reading instream. */ | |
c906108c | 535 | |
d318976c FN |
536 | void |
537 | command_loop (void) | |
c906108c | 538 | { |
d318976c FN |
539 | struct cleanup *old_chain; |
540 | char *command; | |
541 | int stdin_is_tty = ISATTY (stdin); | |
c5aa993b | 542 | |
d318976c FN |
543 | while (instream && !feof (instream)) |
544 | { | |
d318976c | 545 | if (window_hook && instream == stdin) |
ab821bc6 | 546 | (*window_hook) (instream, get_prompt ()); |
c906108c | 547 | |
522002f9 | 548 | clear_quit_flag (); |
d318976c FN |
549 | if (instream == stdin && stdin_is_tty) |
550 | reinitialize_more_filter (); | |
551 | old_chain = make_cleanup (null_cleanup, 0); | |
c906108c | 552 | |
c378eb4e | 553 | /* Get a command-line. This calls the readline package. */ |
d318976c | 554 | command = command_line_input (instream == stdin ? |
ab821bc6 | 555 | get_prompt () : (char *) NULL, |
d318976c | 556 | instream == stdin, "prompt"); |
d318976c | 557 | if (command == 0) |
5fe41fbf TT |
558 | { |
559 | do_cleanups (old_chain); | |
560 | return; | |
561 | } | |
c906108c | 562 | |
0f3bb72e | 563 | make_command_stats_cleanup (1); |
9e0b60a8 | 564 | |
fb1f94b0 PM |
565 | /* Do not execute commented lines. */ |
566 | if (command[0] != '#') | |
567 | { | |
568 | execute_command (command, instream == stdin); | |
347bddb7 | 569 | |
fb1f94b0 PM |
570 | /* Do any commands attached to breakpoint we are stopped at. */ |
571 | bpstat_do_actions (); | |
572 | } | |
d318976c | 573 | do_cleanups (old_chain); |
9e0b60a8 | 574 | } |
9e0b60a8 | 575 | } |
d318976c | 576 | \f |
47a80e90 TT |
577 | /* When nonzero, cause dont_repeat to do nothing. This should only be |
578 | set via prevent_dont_repeat. */ | |
579 | ||
580 | static int suppress_dont_repeat = 0; | |
581 | ||
d318976c | 582 | /* Commands call this if they do not want to be repeated by null lines. */ |
9e0b60a8 | 583 | |
d318976c FN |
584 | void |
585 | dont_repeat (void) | |
9e0b60a8 | 586 | { |
47a80e90 | 587 | if (suppress_dont_repeat || server_command) |
d318976c | 588 | return; |
9e0b60a8 | 589 | |
d318976c | 590 | /* If we aren't reading from standard input, we are saving the last |
371d5dec MS |
591 | thing read from stdin in line and don't want to delete it. Null |
592 | lines won't repeat here in any case. */ | |
d318976c | 593 | if (instream == stdin) |
dc7eb48e | 594 | *saved_command_line = 0; |
9e0b60a8 | 595 | } |
47a80e90 TT |
596 | |
597 | /* Prevent dont_repeat from working, and return a cleanup that | |
598 | restores the previous state. */ | |
599 | ||
600 | struct cleanup * | |
601 | prevent_dont_repeat (void) | |
602 | { | |
603 | struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat); | |
604 | ||
605 | suppress_dont_repeat = 1; | |
606 | return result; | |
607 | } | |
608 | ||
d318976c FN |
609 | \f |
610 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 611 | |
d318976c FN |
612 | It prints PROMPT_ARG once at the start. |
613 | Action is compatible with "readline", e.g. space for the result is | |
614 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 615 | |
d318976c FN |
616 | A NULL return means end of file. */ |
617 | char * | |
618 | gdb_readline (char *prompt_arg) | |
9e0b60a8 | 619 | { |
d318976c FN |
620 | int c; |
621 | char *result; | |
622 | int input_index = 0; | |
623 | int result_size = 80; | |
9e0b60a8 | 624 | |
d318976c | 625 | if (prompt_arg) |
9e0b60a8 | 626 | { |
d318976c FN |
627 | /* Don't use a _filtered function here. It causes the assumed |
628 | character position to be off, since the newline we read from | |
629 | the user is not accounted for. */ | |
630 | fputs_unfiltered (prompt_arg, gdb_stdout); | |
9e0b60a8 JM |
631 | gdb_flush (gdb_stdout); |
632 | } | |
633 | ||
d318976c | 634 | result = (char *) xmalloc (result_size); |
9e0b60a8 JM |
635 | |
636 | while (1) | |
637 | { | |
d318976c FN |
638 | /* Read from stdin if we are executing a user defined command. |
639 | This is the right thing for prompt_for_continue, at least. */ | |
640 | c = fgetc (instream ? instream : stdin); | |
9e0b60a8 | 641 | |
d318976c | 642 | if (c == EOF) |
9e0b60a8 | 643 | { |
d318976c FN |
644 | if (input_index > 0) |
645 | /* The last line does not end with a newline. Return it, and | |
646 | if we are called again fgetc will still return EOF and | |
647 | we'll return NULL then. */ | |
9e0b60a8 | 648 | break; |
b8c9b27d | 649 | xfree (result); |
d318976c | 650 | return NULL; |
9e0b60a8 | 651 | } |
c5aa993b | 652 | |
d318976c | 653 | if (c == '\n') |
9e0b60a8 | 654 | { |
d318976c FN |
655 | if (input_index > 0 && result[input_index - 1] == '\r') |
656 | input_index--; | |
657 | break; | |
9e0b60a8 | 658 | } |
9e0b60a8 | 659 | |
d318976c FN |
660 | result[input_index++] = c; |
661 | while (input_index >= result_size) | |
9e0b60a8 | 662 | { |
d318976c FN |
663 | result_size *= 2; |
664 | result = (char *) xrealloc (result, result_size); | |
9e0b60a8 | 665 | } |
9e0b60a8 JM |
666 | } |
667 | ||
d318976c FN |
668 | result[input_index++] = '\0'; |
669 | return result; | |
9e0b60a8 JM |
670 | } |
671 | ||
d318976c FN |
672 | /* Variables which control command line editing and history |
673 | substitution. These variables are given default values at the end | |
674 | of this file. */ | |
675 | static int command_editing_p; | |
920d2a44 | 676 | |
d318976c FN |
677 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
678 | gdb to use the event loop as the default command loop and we merge | |
c378eb4e | 679 | event-top.c into this file, top.c. */ |
920d2a44 | 680 | |
d318976c | 681 | /* static */ int history_expansion_p; |
920d2a44 | 682 | |
d318976c | 683 | static int write_history_p; |
920d2a44 AC |
684 | static void |
685 | show_write_history_p (struct ui_file *file, int from_tty, | |
686 | struct cmd_list_element *c, const char *value) | |
687 | { | |
688 | fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"), | |
689 | value); | |
690 | } | |
691 | ||
840a9a1f PA |
692 | /* The variable associated with the "set/show history size" |
693 | command. */ | |
694 | static unsigned int history_size_setshow_var; | |
695 | ||
920d2a44 AC |
696 | static void |
697 | show_history_size (struct ui_file *file, int from_tty, | |
698 | struct cmd_list_element *c, const char *value) | |
699 | { | |
700 | fprintf_filtered (file, _("The size of the command history is %s.\n"), | |
701 | value); | |
702 | } | |
703 | ||
d318976c | 704 | static char *history_filename; |
920d2a44 AC |
705 | static void |
706 | show_history_filename (struct ui_file *file, int from_tty, | |
707 | struct cmd_list_element *c, const char *value) | |
708 | { | |
3e43a32a MS |
709 | fprintf_filtered (file, _("The filename in which to record " |
710 | "the command history is \"%s\".\n"), | |
920d2a44 AC |
711 | value); |
712 | } | |
9e0b60a8 | 713 | |
b4f5539f | 714 | /* This is like readline(), but it has some gdb-specific behavior. |
2e03ee74 | 715 | gdb may want readline in both the synchronous and async modes during |
b4f5539f TT |
716 | a single gdb invocation. At the ordinary top-level prompt we might |
717 | be using the async readline. That means we can't use | |
718 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
719 | However, for a secondary prompt (" >", such as occurs during a | |
2e03ee74 DJ |
720 | `define'), gdb wants a synchronous response. |
721 | ||
722 | We used to call readline() directly, running it in synchronous | |
723 | mode. But mixing modes this way is not supported, and as of | |
724 | readline 5.x it no longer works; the arrow keys come unbound during | |
725 | the synchronous call. So we make a nested call into the event | |
726 | loop. That's what gdb_readline_wrapper is for. */ | |
727 | ||
728 | /* A flag set as soon as gdb_readline_wrapper_line is called; we can't | |
729 | rely on gdb_readline_wrapper_result, which might still be NULL if | |
730 | the user types Control-D for EOF. */ | |
731 | static int gdb_readline_wrapper_done; | |
732 | ||
733 | /* The result of the current call to gdb_readline_wrapper, once a newline | |
734 | is seen. */ | |
735 | static char *gdb_readline_wrapper_result; | |
736 | ||
737 | /* Any intercepted hook. Operate-and-get-next sets this, expecting it | |
738 | to be called after the newline is processed (which will redisplay | |
739 | the prompt). But in gdb_readline_wrapper we will not get a new | |
740 | prompt until the next call, or until we return to the event loop. | |
741 | So we disable this hook around the newline and restore it before we | |
742 | return. */ | |
743 | static void (*saved_after_char_processing_hook) (void); | |
744 | ||
745 | /* This function is called when readline has seen a complete line of | |
746 | text. */ | |
747 | ||
748 | static void | |
749 | gdb_readline_wrapper_line (char *line) | |
750 | { | |
751 | gdb_assert (!gdb_readline_wrapper_done); | |
752 | gdb_readline_wrapper_result = line; | |
753 | gdb_readline_wrapper_done = 1; | |
754 | ||
755 | /* Prevent operate-and-get-next from acting too early. */ | |
756 | saved_after_char_processing_hook = after_char_processing_hook; | |
757 | after_char_processing_hook = NULL; | |
1b05479a DJ |
758 | |
759 | /* Prevent parts of the prompt from being redisplayed if annotations | |
0017922d PA |
760 | are enabled, and readline's state getting out of sync. We'll |
761 | restore it in gdb_readline_wrapper_cleanup. */ | |
1b05479a DJ |
762 | if (async_command_editing_p) |
763 | rl_callback_handler_remove (); | |
2e03ee74 DJ |
764 | } |
765 | ||
766 | struct gdb_readline_wrapper_cleanup | |
767 | { | |
768 | void (*handler_orig) (char *); | |
2e03ee74 | 769 | int already_prompted_orig; |
93d6eb10 PA |
770 | |
771 | /* Whether the target was async. */ | |
772 | int target_is_async_orig; | |
2e03ee74 DJ |
773 | }; |
774 | ||
775 | static void | |
776 | gdb_readline_wrapper_cleanup (void *arg) | |
777 | { | |
778 | struct gdb_readline_wrapper_cleanup *cleanup = arg; | |
779 | ||
2e03ee74 | 780 | rl_already_prompted = cleanup->already_prompted_orig; |
2e03ee74 DJ |
781 | |
782 | gdb_assert (input_handler == gdb_readline_wrapper_line); | |
783 | input_handler = cleanup->handler_orig; | |
0017922d PA |
784 | |
785 | /* Reinstall INPUT_HANDLER in readline, without displaying a | |
786 | prompt. */ | |
787 | if (async_command_editing_p) | |
788 | rl_callback_handler_install (NULL, input_handler); | |
789 | ||
2e03ee74 DJ |
790 | gdb_readline_wrapper_result = NULL; |
791 | gdb_readline_wrapper_done = 0; | |
792 | ||
793 | after_char_processing_hook = saved_after_char_processing_hook; | |
794 | saved_after_char_processing_hook = NULL; | |
795 | ||
93d6eb10 PA |
796 | if (cleanup->target_is_async_orig) |
797 | target_async (inferior_event_handler, 0); | |
798 | ||
2e03ee74 DJ |
799 | xfree (cleanup); |
800 | } | |
801 | ||
b4f5539f TT |
802 | char * |
803 | gdb_readline_wrapper (char *prompt) | |
804 | { | |
2e03ee74 DJ |
805 | struct cleanup *back_to; |
806 | struct gdb_readline_wrapper_cleanup *cleanup; | |
807 | char *retval; | |
808 | ||
809 | cleanup = xmalloc (sizeof (*cleanup)); | |
810 | cleanup->handler_orig = input_handler; | |
811 | input_handler = gdb_readline_wrapper_line; | |
812 | ||
2e03ee74 DJ |
813 | cleanup->already_prompted_orig = rl_already_prompted; |
814 | ||
93d6eb10 PA |
815 | cleanup->target_is_async_orig = target_is_async_p (); |
816 | ||
2e03ee74 DJ |
817 | back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup); |
818 | ||
93d6eb10 PA |
819 | if (cleanup->target_is_async_orig) |
820 | target_async (NULL, NULL); | |
821 | ||
2e03ee74 | 822 | /* Display our prompt and prevent double prompt display. */ |
1b05479a | 823 | display_gdb_prompt (prompt); |
2e03ee74 DJ |
824 | rl_already_prompted = 1; |
825 | ||
362646f5 | 826 | if (after_char_processing_hook) |
2e03ee74 DJ |
827 | (*after_char_processing_hook) (); |
828 | gdb_assert (after_char_processing_hook == NULL); | |
829 | ||
e0dd0826 | 830 | while (gdb_do_one_event () >= 0) |
2e03ee74 DJ |
831 | if (gdb_readline_wrapper_done) |
832 | break; | |
b4f5539f | 833 | |
2e03ee74 DJ |
834 | retval = gdb_readline_wrapper_result; |
835 | do_cleanups (back_to); | |
836 | return retval; | |
b4f5539f TT |
837 | } |
838 | ||
9e0b60a8 | 839 | \f |
467d8519 TT |
840 | /* The current saved history number from operate-and-get-next. |
841 | This is -1 if not valid. */ | |
842 | static int operate_saved_history = -1; | |
843 | ||
844 | /* This is put on the appropriate hook and helps operate-and-get-next | |
845 | do its work. */ | |
b9362cc7 | 846 | static void |
5ae5f592 | 847 | gdb_rl_operate_and_get_next_completion (void) |
467d8519 TT |
848 | { |
849 | int delta = where_history () - operate_saved_history; | |
5d502164 | 850 | |
467d8519 TT |
851 | /* The `key' argument to rl_get_previous_history is ignored. */ |
852 | rl_get_previous_history (delta, 0); | |
853 | operate_saved_history = -1; | |
854 | ||
855 | /* readline doesn't automatically update the display for us. */ | |
12f4afab | 856 | rl_redisplay (); |
467d8519 TT |
857 | |
858 | after_char_processing_hook = NULL; | |
859 | rl_pre_input_hook = NULL; | |
860 | } | |
861 | ||
862 | /* This is a gdb-local readline command handler. It accepts the | |
863 | current command line (like RET does) and, if this command was taken | |
864 | from the history, arranges for the next command in the history to | |
865 | appear on the command line when the prompt returns. | |
866 | We ignore the arguments. */ | |
867 | static int | |
868 | gdb_rl_operate_and_get_next (int count, int key) | |
869 | { | |
b5686e99 MK |
870 | int where; |
871 | ||
362646f5 AC |
872 | /* Use the async hook. */ |
873 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
467d8519 | 874 | |
b5686e99 MK |
875 | /* Find the current line, and find the next line to use. */ |
876 | where = where_history(); | |
877 | ||
1fb2e2b5 PA |
878 | if ((history_is_stifled () && (history_length >= history_max_entries)) |
879 | || (where >= history_length - 1)) | |
b5686e99 MK |
880 | operate_saved_history = where; |
881 | else | |
882 | operate_saved_history = where + 1; | |
883 | ||
467d8519 TT |
884 | return rl_newline (1, key); |
885 | } | |
886 | \f | |
d318976c FN |
887 | /* Read one line from the command input stream `instream' |
888 | into the local static buffer `linebuffer' (whose current length | |
889 | is `linelength'). | |
890 | The buffer is made bigger as necessary. | |
891 | Returns the address of the start of the line. | |
9e0b60a8 | 892 | |
d318976c | 893 | NULL is returned for end of file. |
9e0b60a8 | 894 | |
d318976c FN |
895 | *If* the instream == stdin & stdin is a terminal, the line read |
896 | is copied into the file line saver (global var char *line, | |
897 | length linesize) so that it can be duplicated. | |
9e0b60a8 | 898 | |
d318976c FN |
899 | This routine either uses fancy command line editing or |
900 | simple input as the user has requested. */ | |
10689f25 | 901 | |
d318976c FN |
902 | char * |
903 | command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) | |
9e0b60a8 | 904 | { |
d318976c FN |
905 | static char *linebuffer = 0; |
906 | static unsigned linelength = 0; | |
52f0bd74 | 907 | char *p; |
d318976c FN |
908 | char *p1; |
909 | char *rl; | |
910 | char *local_prompt = prompt_arg; | |
911 | char *nline; | |
912 | char got_eof = 0; | |
913 | ||
914 | /* The annotation suffix must be non-NULL. */ | |
915 | if (annotation_suffix == NULL) | |
916 | annotation_suffix = ""; | |
9e0b60a8 | 917 | |
d318976c FN |
918 | if (annotation_level > 1 && instream == stdin) |
919 | { | |
920 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
921 | + strlen (annotation_suffix) + 40); | |
922 | if (prompt_arg == NULL) | |
923 | local_prompt[0] = '\0'; | |
924 | else | |
925 | strcpy (local_prompt, prompt_arg); | |
926 | strcat (local_prompt, "\n\032\032"); | |
927 | strcat (local_prompt, annotation_suffix); | |
928 | strcat (local_prompt, "\n"); | |
929 | } | |
9e0b60a8 | 930 | |
d318976c | 931 | if (linebuffer == 0) |
9e0b60a8 | 932 | { |
d318976c FN |
933 | linelength = 80; |
934 | linebuffer = (char *) xmalloc (linelength); | |
9e0b60a8 | 935 | } |
9e0b60a8 | 936 | |
d318976c | 937 | p = linebuffer; |
9e0b60a8 | 938 | |
d318976c FN |
939 | /* Control-C quits instantly if typed while in this loop |
940 | since it should not wait until the user types a newline. */ | |
941 | immediate_quit++; | |
522002f9 | 942 | QUIT; |
d318976c FN |
943 | #ifdef STOP_SIGNAL |
944 | if (job_control) | |
362646f5 | 945 | signal (STOP_SIGNAL, handle_stop_sig); |
d318976c FN |
946 | #endif |
947 | ||
948 | while (1) | |
9e0b60a8 | 949 | { |
371d5dec MS |
950 | /* Make sure that all output has been output. Some machines may |
951 | let you get away with leaving out some of the gdb_flush, but | |
952 | not all. */ | |
d318976c FN |
953 | wrap_here (""); |
954 | gdb_flush (gdb_stdout); | |
955 | gdb_flush (gdb_stderr); | |
956 | ||
957 | if (source_file_name != NULL) | |
637537d0 | 958 | ++source_line_number; |
d318976c FN |
959 | |
960 | if (annotation_level > 1 && instream == stdin) | |
961 | { | |
306d9ac5 DC |
962 | puts_unfiltered ("\n\032\032pre-"); |
963 | puts_unfiltered (annotation_suffix); | |
964 | puts_unfiltered ("\n"); | |
d318976c FN |
965 | } |
966 | ||
967 | /* Don't use fancy stuff if not talking to stdin. */ | |
698ba934 | 968 | if (deprecated_readline_hook && input_from_terminal_p ()) |
d318976c | 969 | { |
9a4105ab | 970 | rl = (*deprecated_readline_hook) (local_prompt); |
d318976c | 971 | } |
698ba934 | 972 | else if (command_editing_p && input_from_terminal_p ()) |
d318976c | 973 | { |
b4f5539f | 974 | rl = gdb_readline_wrapper (local_prompt); |
d318976c | 975 | } |
9e0b60a8 | 976 | else |
d318976c FN |
977 | { |
978 | rl = gdb_readline (local_prompt); | |
979 | } | |
9e0b60a8 | 980 | |
d318976c FN |
981 | if (annotation_level > 1 && instream == stdin) |
982 | { | |
306d9ac5 DC |
983 | puts_unfiltered ("\n\032\032post-"); |
984 | puts_unfiltered (annotation_suffix); | |
985 | puts_unfiltered ("\n"); | |
d318976c | 986 | } |
9e0b60a8 | 987 | |
d318976c | 988 | if (!rl || rl == (char *) EOF) |
9e0b60a8 | 989 | { |
d318976c FN |
990 | got_eof = 1; |
991 | break; | |
9e0b60a8 | 992 | } |
d318976c FN |
993 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
994 | { | |
995 | linelength = strlen (rl) + 1 + (p - linebuffer); | |
996 | nline = (char *) xrealloc (linebuffer, linelength); | |
997 | p += nline - linebuffer; | |
998 | linebuffer = nline; | |
999 | } | |
1000 | p1 = rl; | |
1001 | /* Copy line. Don't copy null at end. (Leaves line alone | |
371d5dec | 1002 | if this was just a newline). */ |
d318976c FN |
1003 | while (*p1) |
1004 | *p++ = *p1++; | |
9e0b60a8 | 1005 | |
b8c9b27d | 1006 | xfree (rl); /* Allocated in readline. */ |
9e0b60a8 | 1007 | |
d318976c FN |
1008 | if (p == linebuffer || *(p - 1) != '\\') |
1009 | break; | |
9e0b60a8 | 1010 | |
d318976c FN |
1011 | p--; /* Put on top of '\'. */ |
1012 | local_prompt = (char *) 0; | |
1013 | } | |
9e0b60a8 | 1014 | |
d318976c FN |
1015 | #ifdef STOP_SIGNAL |
1016 | if (job_control) | |
1017 | signal (STOP_SIGNAL, SIG_DFL); | |
1018 | #endif | |
1019 | immediate_quit--; | |
9e0b60a8 | 1020 | |
d318976c FN |
1021 | if (got_eof) |
1022 | return NULL; | |
9e0b60a8 | 1023 | |
d318976c FN |
1024 | #define SERVER_COMMAND_LENGTH 7 |
1025 | server_command = | |
1026 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
bf896cb0 | 1027 | && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0; |
d318976c | 1028 | if (server_command) |
9e0b60a8 | 1029 | { |
d318976c FN |
1030 | /* Note that we don't set `line'. Between this and the check in |
1031 | dont_repeat, this insures that repeating will still do the | |
1032 | right thing. */ | |
1033 | *p = '\0'; | |
1034 | return linebuffer + SERVER_COMMAND_LENGTH; | |
9e0b60a8 | 1035 | } |
9e0b60a8 | 1036 | |
d318976c FN |
1037 | /* Do history expansion if that is wished. */ |
1038 | if (history_expansion_p && instream == stdin | |
1039 | && ISATTY (instream)) | |
1040 | { | |
1041 | char *history_value; | |
1042 | int expanded; | |
9e0b60a8 | 1043 | |
d318976c FN |
1044 | *p = '\0'; /* Insert null now. */ |
1045 | expanded = history_expand (linebuffer, &history_value); | |
1046 | if (expanded) | |
1047 | { | |
1048 | /* Print the changes. */ | |
1049 | printf_unfiltered ("%s\n", history_value); | |
9e0b60a8 | 1050 | |
d318976c FN |
1051 | /* If there was an error, call this function again. */ |
1052 | if (expanded < 0) | |
1053 | { | |
b8c9b27d | 1054 | xfree (history_value); |
3e43a32a MS |
1055 | return command_line_input (prompt_arg, repeat, |
1056 | annotation_suffix); | |
d318976c FN |
1057 | } |
1058 | if (strlen (history_value) > linelength) | |
1059 | { | |
1060 | linelength = strlen (history_value) + 1; | |
1061 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1062 | } | |
1063 | strcpy (linebuffer, history_value); | |
1064 | p = linebuffer + strlen (linebuffer); | |
d318976c | 1065 | } |
91d2803c | 1066 | xfree (history_value); |
d318976c | 1067 | } |
9e0b60a8 | 1068 | |
371d5dec MS |
1069 | /* If we just got an empty line, and that is supposed to repeat the |
1070 | previous command, return the value in the global buffer. */ | |
d318976c | 1071 | if (repeat && p == linebuffer) |
dc7eb48e | 1072 | return saved_command_line; |
d318976c FN |
1073 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); |
1074 | if (repeat && !*p1) | |
dc7eb48e | 1075 | return saved_command_line; |
9e0b60a8 | 1076 | |
d318976c | 1077 | *p = 0; |
9e0b60a8 | 1078 | |
d318976c | 1079 | /* Add line to history if appropriate. */ |
840da61a | 1080 | if (*linebuffer && input_from_terminal_p ()) |
d318976c | 1081 | add_history (linebuffer); |
9e0b60a8 | 1082 | |
d318976c FN |
1083 | /* Save into global buffer if appropriate. */ |
1084 | if (repeat) | |
1085 | { | |
dc7eb48e | 1086 | if (linelength > saved_command_line_size) |
d318976c | 1087 | { |
dc7eb48e PA |
1088 | saved_command_line = xrealloc (saved_command_line, linelength); |
1089 | saved_command_line_size = linelength; | |
d318976c | 1090 | } |
dc7eb48e PA |
1091 | strcpy (saved_command_line, linebuffer); |
1092 | return saved_command_line; | |
d318976c | 1093 | } |
9e0b60a8 | 1094 | |
d318976c | 1095 | return linebuffer; |
9e0b60a8 JM |
1096 | } |
1097 | \f | |
371d5dec | 1098 | /* Print the GDB banner. */ |
9e0b60a8 | 1099 | void |
fba45db2 | 1100 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1101 | { |
1102 | /* From GNU coding standards, first line is meant to be easy for a | |
1103 | program to parse, and is just canonical program name and version | |
371d5dec | 1104 | number, which starts after last space. */ |
9e0b60a8 | 1105 | |
c16158bc | 1106 | fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version); |
9e0b60a8 | 1107 | |
371d5dec | 1108 | /* Second line is a copyright notice. */ |
9e0b60a8 | 1109 | |
3e43a32a | 1110 | fprintf_filtered (stream, |
28498c42 | 1111 | "Copyright (C) 2014 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1112 | |
1113 | /* Following the copyright is a brief statement that the program is | |
1114 | free software, that users are free to copy and change it on | |
1115 | certain conditions, that it is covered by the GNU GPL, and that | |
371d5dec | 1116 | there is no warranty. */ |
9e0b60a8 JM |
1117 | |
1118 | fprintf_filtered (stream, "\ | |
3e43a32a MS |
1119 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\ |
1120 | \nThis is free software: you are free to change and redistribute it.\n\ | |
0b93d57c | 1121 | There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\ |
b8533aec | 1122 | and \"show warranty\" for details.\n"); |
9e0b60a8 | 1123 | |
371d5dec | 1124 | /* After the required info we print the configuration information. */ |
9e0b60a8 JM |
1125 | |
1126 | fprintf_filtered (stream, "This GDB was configured as \""); | |
6314a349 | 1127 | if (strcmp (host_name, target_name) != 0) |
9e0b60a8 | 1128 | { |
3e43a32a MS |
1129 | fprintf_filtered (stream, "--host=%s --target=%s", |
1130 | host_name, target_name); | |
9e0b60a8 JM |
1131 | } |
1132 | else | |
1133 | { | |
1134 | fprintf_filtered (stream, "%s", host_name); | |
1135 | } | |
6eaaf48b EZ |
1136 | fprintf_filtered (stream, "\".\n\ |
1137 | Type \"show configuration\" for configuration details."); | |
c16158bc JM |
1138 | |
1139 | if (REPORT_BUGS_TO[0]) | |
1140 | { | |
6eaaf48b | 1141 | fprintf_filtered (stream, |
c16158bc | 1142 | _("\nFor bug reporting instructions, please see:\n")); |
1cf55f60 | 1143 | fprintf_filtered (stream, "%s.\n", REPORT_BUGS_TO); |
c16158bc | 1144 | } |
1cf55f60 PM |
1145 | fprintf_filtered (stream, |
1146 | _("Find the GDB manual and other documentation \ | |
1147 | resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n")); | |
1148 | fprintf_filtered (stream, _("For help, type \"help\".\n")); | |
1149 | fprintf_filtered (stream, _("Type \"apropos word\" to search for \ | |
af4c453a | 1150 | commands related to \"word\".")); |
9e0b60a8 | 1151 | } |
6eaaf48b EZ |
1152 | |
1153 | /* Print the details of GDB build-time configuration. */ | |
1154 | void | |
1155 | print_gdb_configuration (struct ui_file *stream) | |
1156 | { | |
1157 | fprintf_filtered (stream, _("\ | |
1158 | This GDB was configured as follows:\n\ | |
1159 | configure --host=%s --target=%s\n\ | |
1160 | "), host_name, target_name); | |
1161 | fprintf_filtered (stream, _("\ | |
1162 | --with-auto-load-dir=%s\n\ | |
1163 | --with-auto-load-safe-path=%s\n\ | |
1164 | "), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH); | |
1165 | #if HAVE_LIBEXPAT | |
1166 | fprintf_filtered (stream, _("\ | |
1167 | --with-expat\n\ | |
1168 | ")); | |
1169 | #else | |
1170 | fprintf_filtered (stream, _("\ | |
1171 | --without-expat\n\ | |
1172 | ")); | |
1173 | #endif | |
1174 | if (GDB_DATADIR[0]) | |
1175 | fprintf_filtered (stream, _("\ | |
1176 | --with-gdb-datadir=%s%s\n\ | |
1177 | "), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : ""); | |
1178 | #ifdef ICONV_BIN | |
1179 | fprintf_filtered (stream, _("\ | |
1180 | --with-iconv-bin=%s%s\n\ | |
1181 | "), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : ""); | |
1182 | #endif | |
1183 | if (JIT_READER_DIR[0]) | |
1184 | fprintf_filtered (stream, _("\ | |
1185 | --with-jit-reader-dir=%s%s\n\ | |
1186 | "), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : ""); | |
1187 | #if HAVE_LIBUNWIND_IA64_H | |
1188 | fprintf_filtered (stream, _("\ | |
1189 | --with-libunwind-ia64\n\ | |
1190 | ")); | |
1191 | #else | |
1192 | fprintf_filtered (stream, _("\ | |
1193 | --without-libunwind-ia64\n\ | |
1194 | ")); | |
1195 | #endif | |
1196 | #if HAVE_LIBLZMA | |
1197 | fprintf_filtered (stream, _("\ | |
1198 | --with-lzma\n\ | |
1199 | ")); | |
1200 | #else | |
1201 | fprintf_filtered (stream, _("\ | |
1202 | --without-lzma\n\ | |
1203 | ")); | |
1204 | #endif | |
1205 | #ifdef WITH_PYTHON_PATH | |
1206 | fprintf_filtered (stream, _("\ | |
1207 | --with-python=%s%s\n\ | |
1208 | "), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : ""); | |
1209 | #endif | |
97d66cc6 EZ |
1210 | #if HAVE_GUILE |
1211 | fprintf_filtered (stream, _("\ | |
1212 | --with-guile\n\ | |
1213 | ")); | |
1214 | #else | |
1215 | fprintf_filtered (stream, _("\ | |
1216 | --without-guile\n\ | |
1217 | ")); | |
1218 | #endif | |
6eaaf48b EZ |
1219 | #ifdef RELOC_SRCDIR |
1220 | fprintf_filtered (stream, _("\ | |
1221 | --with-relocated-sources=%s\n\ | |
1222 | "), RELOC_SRCDIR); | |
1223 | #endif | |
1224 | if (DEBUGDIR[0]) | |
1225 | fprintf_filtered (stream, _("\ | |
1226 | --with-separate-debug-dir=%s%s\n\ | |
1227 | "), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : ""); | |
1228 | if (TARGET_SYSTEM_ROOT[0]) | |
1229 | fprintf_filtered (stream, _("\ | |
1230 | --with-sysroot=%s%s\n\ | |
1231 | "), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : ""); | |
1232 | if (SYSTEM_GDBINIT[0]) | |
1233 | fprintf_filtered (stream, _("\ | |
1234 | --with-system-gdbinit=%s%s\n\ | |
1235 | "), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : ""); | |
1236 | #if HAVE_ZLIB_H | |
1237 | fprintf_filtered (stream, _("\ | |
1238 | --with-zlib\n\ | |
1239 | ")); | |
1240 | #else | |
1241 | fprintf_filtered (stream, _("\ | |
1242 | --without-zlib\n\ | |
1243 | ")); | |
1244 | #endif | |
ab116149 YQ |
1245 | #if HAVE_LIBBABELTRACE |
1246 | fprintf_filtered (stream, _("\ | |
1247 | --with-babeltrace\n\ | |
1248 | ")); | |
1249 | #else | |
1250 | fprintf_filtered (stream, _("\ | |
1251 | --without-babeltrace\n\ | |
1252 | ")); | |
1253 | #endif | |
48d1d6f5 EZ |
1254 | /* We assume "relocatable" will be printed at least once, thus we always |
1255 | print this text. It's a reasonably safe assumption for now. */ | |
1256 | fprintf_filtered (stream, _("\n\ | |
1257 | (\"Relocatable\" means the directory can be moved with the GDB installation\n\ | |
1258 | tree, and GDB will still find it.)\n\ | |
1259 | ")); | |
6eaaf48b | 1260 | } |
9e0b60a8 | 1261 | \f |
95298e72 | 1262 | |
ab821bc6 PA |
1263 | /* The current top level prompt, settable with "set prompt", and/or |
1264 | with the python `gdb.prompt_hook' hook. */ | |
1265 | static char *top_prompt; | |
9e0b60a8 | 1266 | |
ab821bc6 | 1267 | /* Access method for the GDB prompt string. */ |
95298e72 PM |
1268 | |
1269 | char * | |
ab821bc6 | 1270 | get_prompt (void) |
95298e72 | 1271 | { |
ab821bc6 | 1272 | return top_prompt; |
95298e72 PM |
1273 | } |
1274 | ||
ab821bc6 | 1275 | /* Set method for the GDB prompt string. */ |
95298e72 PM |
1276 | |
1277 | void | |
ab821bc6 | 1278 | set_prompt (const char *s) |
95298e72 | 1279 | { |
ab821bc6 | 1280 | char *p = xstrdup (s); |
95298e72 | 1281 | |
ab821bc6 PA |
1282 | xfree (top_prompt); |
1283 | top_prompt = p; | |
9e0b60a8 | 1284 | } |
9e0b60a8 | 1285 | \f |
c5aa993b | 1286 | |
b0abbc58 | 1287 | struct qt_args |
9e0b60a8 | 1288 | { |
b0abbc58 JJ |
1289 | char *args; |
1290 | int from_tty; | |
1291 | }; | |
9e0b60a8 | 1292 | |
54a012c9 PA |
1293 | /* Callback for iterate_over_inferiors. Kills or detaches the given |
1294 | inferior, depending on how we originally gained control of it. */ | |
1295 | ||
1296 | static int | |
1297 | kill_or_detach (struct inferior *inf, void *args) | |
1298 | { | |
1299 | struct qt_args *qt = args; | |
1300 | struct thread_info *thread; | |
1301 | ||
6c95b8df PA |
1302 | if (inf->pid == 0) |
1303 | return 0; | |
1304 | ||
b8fa0bfa PA |
1305 | thread = any_thread_of_process (inf->pid); |
1306 | if (thread != NULL) | |
9e0b60a8 | 1307 | { |
54a012c9 | 1308 | switch_to_thread (thread->ptid); |
c35b1492 PA |
1309 | |
1310 | /* Leave core files alone. */ | |
1311 | if (target_has_execution) | |
1312 | { | |
1313 | if (inf->attach_flag) | |
1314 | target_detach (qt->args, qt->from_tty); | |
1315 | else | |
1316 | target_kill (); | |
1317 | } | |
9e0b60a8 JM |
1318 | } |
1319 | ||
54a012c9 PA |
1320 | return 0; |
1321 | } | |
1322 | ||
b8fa0bfa PA |
1323 | /* Callback for iterate_over_inferiors. Prints info about what GDB |
1324 | will do to each inferior on a "quit". ARG points to a struct | |
1325 | ui_out where output is to be collected. */ | |
1326 | ||
1327 | static int | |
1328 | print_inferior_quit_action (struct inferior *inf, void *arg) | |
1329 | { | |
1330 | struct ui_file *stb = arg; | |
1331 | ||
6c95b8df PA |
1332 | if (inf->pid == 0) |
1333 | return 0; | |
1334 | ||
b8fa0bfa PA |
1335 | if (inf->attach_flag) |
1336 | fprintf_filtered (stb, | |
1337 | _("\tInferior %d [%s] will be detached.\n"), inf->num, | |
1338 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1339 | else | |
1340 | fprintf_filtered (stb, | |
1341 | _("\tInferior %d [%s] will be killed.\n"), inf->num, | |
1342 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1343 | ||
1344 | return 0; | |
1345 | } | |
1346 | ||
1347 | /* If necessary, make the user confirm that we should quit. Return | |
1348 | non-zero if we should quit, zero if we shouldn't. */ | |
1349 | ||
1350 | int | |
1351 | quit_confirm (void) | |
1352 | { | |
1353 | struct ui_file *stb; | |
1354 | struct cleanup *old_chain; | |
1355 | char *str; | |
1356 | int qr; | |
1357 | ||
1358 | /* Don't even ask if we're only debugging a core file inferior. */ | |
1359 | if (!have_live_inferiors ()) | |
1360 | return 1; | |
1361 | ||
1362 | /* Build the query string as a single string. */ | |
1363 | stb = mem_fileopen (); | |
1364 | old_chain = make_cleanup_ui_file_delete (stb); | |
1365 | ||
5a5d8ead AB |
1366 | fprintf_filtered (stb, _("A debugging session is active.\n\n")); |
1367 | iterate_over_inferiors (print_inferior_quit_action, stb); | |
1368 | fprintf_filtered (stb, _("\nQuit anyway? ")); | |
b8fa0bfa PA |
1369 | |
1370 | str = ui_file_xstrdup (stb, NULL); | |
1371 | make_cleanup (xfree, str); | |
1372 | ||
1373 | qr = query ("%s", str); | |
1374 | do_cleanups (old_chain); | |
1375 | return qr; | |
1376 | } | |
1377 | ||
b0abbc58 JJ |
1378 | /* Quit without asking for confirmation. */ |
1379 | ||
1380 | void | |
1381 | quit_force (char *args, int from_tty) | |
1382 | { | |
1383 | int exit_code = 0; | |
365c70b1 | 1384 | struct qt_args qt; |
2f9d54cf | 1385 | volatile struct gdb_exception ex; |
b0abbc58 JJ |
1386 | |
1387 | /* An optional expression may be used to cause gdb to terminate with the | |
371d5dec | 1388 | value of that expression. */ |
b0abbc58 JJ |
1389 | if (args) |
1390 | { | |
1391 | struct value *val = parse_and_eval (args); | |
1392 | ||
1393 | exit_code = (int) value_as_long (val); | |
1394 | } | |
4b0ad762 AS |
1395 | else if (return_child_result) |
1396 | exit_code = return_child_result_value; | |
b0abbc58 | 1397 | |
365c70b1 JJ |
1398 | qt.args = args; |
1399 | qt.from_tty = from_tty; | |
1400 | ||
2f9d54cf PA |
1401 | /* Wrappers to make the code below a bit more readable. */ |
1402 | #define DO_TRY \ | |
1403 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1404 | ||
1405 | #define DO_PRINT_EX \ | |
1406 | if (ex.reason < 0) \ | |
1407 | exception_print (gdb_stderr, ex) | |
1408 | ||
b0abbc58 | 1409 | /* We want to handle any quit errors and exit regardless. */ |
2f9d54cf PA |
1410 | |
1411 | /* Get out of tfind mode, and kill or detach all inferiors. */ | |
1412 | DO_TRY | |
1413 | { | |
1414 | disconnect_tracing (); | |
1415 | iterate_over_inferiors (kill_or_detach, &qt); | |
1416 | } | |
1417 | DO_PRINT_EX; | |
1418 | ||
1419 | /* Give all pushed targets a chance to do minimal cleanup, and pop | |
1420 | them all out. */ | |
1421 | DO_TRY | |
1422 | { | |
1423 | pop_all_targets (); | |
1424 | } | |
1425 | DO_PRINT_EX; | |
1426 | ||
1427 | /* Save the history information if it is appropriate to do so. */ | |
1428 | DO_TRY | |
1429 | { | |
35ab155d MB |
1430 | if (write_history_p && history_filename |
1431 | && input_from_terminal_p ()) | |
2f9d54cf PA |
1432 | write_history (history_filename); |
1433 | } | |
1434 | DO_PRINT_EX; | |
1435 | ||
1436 | /* Do any final cleanups before exiting. */ | |
1437 | DO_TRY | |
1438 | { | |
1439 | do_final_cleanups (all_cleanups ()); | |
1440 | } | |
1441 | DO_PRINT_EX; | |
b0abbc58 | 1442 | |
9e0b60a8 JM |
1443 | exit (exit_code); |
1444 | } | |
1445 | ||
698ba934 DJ |
1446 | /* Returns whether GDB is running on a terminal and input is |
1447 | currently coming from that terminal. */ | |
9e0b60a8 JM |
1448 | |
1449 | int | |
fba45db2 | 1450 | input_from_terminal_p (void) |
9e0b60a8 | 1451 | { |
c63a1f86 JK |
1452 | if (batch_flag) |
1453 | return 0; | |
1454 | ||
698ba934 DJ |
1455 | if (gdb_has_a_terminal () && instream == stdin) |
1456 | return 1; | |
1457 | ||
1458 | /* If INSTREAM is unset, and we are not in a user command, we | |
1459 | must be in Insight. That's like having a terminal, for our | |
1460 | purposes. */ | |
1461 | if (instream == NULL && !in_user_command) | |
1462 | return 1; | |
1463 | ||
1464 | return 0; | |
9e0b60a8 JM |
1465 | } |
1466 | \f | |
9e0b60a8 | 1467 | static void |
fba45db2 | 1468 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1469 | { |
dc7eb48e PA |
1470 | /* Can't call dont_repeat here because we're not necessarily reading |
1471 | from stdin. */ | |
1472 | *saved_command_line = 0; | |
9e0b60a8 JM |
1473 | } |
1474 | \f | |
1475 | /* Functions to manipulate command line editing control variables. */ | |
1476 | ||
1477 | /* Number of commands to print in each call to show_commands. */ | |
1478 | #define Hist_print 10 | |
d318976c | 1479 | void |
fba45db2 | 1480 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1481 | { |
1482 | /* Index for history commands. Relative to history_base. */ | |
1483 | int offset; | |
1484 | ||
1485 | /* Number of the history entry which we are planning to display next. | |
1486 | Relative to history_base. */ | |
1487 | static int num = 0; | |
1488 | ||
9e0b60a8 | 1489 | /* Print out some of the commands from the command history. */ |
9e0b60a8 JM |
1490 | |
1491 | if (args) | |
1492 | { | |
1493 | if (args[0] == '+' && args[1] == '\0') | |
1494 | /* "info editing +" should print from the stored position. */ | |
1495 | ; | |
1496 | else | |
1497 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1498 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1499 | } |
1500 | /* "show commands" means print the last Hist_print commands. */ | |
1501 | else | |
1502 | { | |
840a9a1f | 1503 | num = history_length - Hist_print; |
9e0b60a8 JM |
1504 | } |
1505 | ||
1506 | if (num < 0) | |
1507 | num = 0; | |
1508 | ||
1509 | /* If there are at least Hist_print commands, we want to display the last | |
1510 | Hist_print rather than, say, the last 6. */ | |
840a9a1f | 1511 | if (history_length - num < Hist_print) |
9e0b60a8 | 1512 | { |
840a9a1f | 1513 | num = history_length - Hist_print; |
9e0b60a8 JM |
1514 | if (num < 0) |
1515 | num = 0; | |
1516 | } | |
1517 | ||
840a9a1f PA |
1518 | for (offset = num; |
1519 | offset < num + Hist_print && offset < history_length; | |
1520 | offset++) | |
9e0b60a8 JM |
1521 | { |
1522 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1523 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1524 | } |
1525 | ||
1526 | /* The next command we want to display is the next one that we haven't | |
1527 | displayed yet. */ | |
1528 | num += Hist_print; | |
1529 | ||
1530 | /* If the user repeats this command with return, it should do what | |
1531 | "show commands +" does. This is unnecessary if arg is null, | |
1532 | because "show commands +" is not useful after "show commands". */ | |
1533 | if (from_tty && args) | |
1534 | { | |
1535 | args[0] = '+'; | |
1536 | args[1] = '\0'; | |
1537 | } | |
1538 | } | |
1539 | ||
1540 | /* Called by do_setshow_command. */ | |
9e0b60a8 | 1541 | static void |
fba45db2 | 1542 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1543 | { |
840a9a1f PA |
1544 | /* Readline's history interface works with 'int', so it can only |
1545 | handle history sizes up to INT_MAX. The command itself is | |
1546 | uinteger, so UINT_MAX means "unlimited", but we only get that if | |
1547 | the user does "set history size 0" -- "set history size <UINT_MAX>" | |
1548 | throws out-of-range. */ | |
1549 | if (history_size_setshow_var > INT_MAX | |
1550 | && history_size_setshow_var != UINT_MAX) | |
9e0b60a8 | 1551 | { |
840a9a1f PA |
1552 | unsigned int new_value = history_size_setshow_var; |
1553 | ||
1554 | /* Restore previous value before throwing. */ | |
1555 | if (history_is_stifled ()) | |
1556 | history_size_setshow_var = history_max_entries; | |
1557 | else | |
1558 | history_size_setshow_var = UINT_MAX; | |
1559 | ||
1560 | error (_("integer %u out of range"), new_value); | |
9e0b60a8 | 1561 | } |
840a9a1f PA |
1562 | |
1563 | /* Commit the new value to readline's history. */ | |
1564 | if (history_size_setshow_var == UINT_MAX) | |
1565 | unstifle_history (); | |
883b9c6c | 1566 | else |
840a9a1f | 1567 | stifle_history (history_size_setshow_var); |
9e0b60a8 JM |
1568 | } |
1569 | ||
d318976c | 1570 | void |
fba45db2 | 1571 | set_history (char *args, int from_tty) |
9e0b60a8 | 1572 | { |
3e43a32a MS |
1573 | printf_unfiltered (_("\"set history\" must be followed " |
1574 | "by the name of a history subcommand.\n")); | |
635c7e8a | 1575 | help_list (sethistlist, "set history ", all_commands, gdb_stdout); |
9e0b60a8 JM |
1576 | } |
1577 | ||
d318976c | 1578 | void |
fba45db2 | 1579 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1580 | { |
1581 | cmd_show_list (showhistlist, from_tty, ""); | |
1582 | } | |
1583 | ||
371d5dec | 1584 | int info_verbose = 0; /* Default verbose msgs off. */ |
9e0b60a8 JM |
1585 | |
1586 | /* Called by do_setshow_command. An elaborate joke. */ | |
d318976c | 1587 | void |
fba45db2 | 1588 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1589 | { |
6f937416 | 1590 | const char *cmdname = "verbose"; |
9e0b60a8 JM |
1591 | struct cmd_list_element *showcmd; |
1592 | ||
1593 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1427fe5e | 1594 | gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS); |
9e0b60a8 JM |
1595 | |
1596 | if (info_verbose) | |
1597 | { | |
1598 | c->doc = "Set verbose printing of informational messages."; | |
1599 | showcmd->doc = "Show verbose printing of informational messages."; | |
1600 | } | |
1601 | else | |
1602 | { | |
1603 | c->doc = "Set verbosity."; | |
1604 | showcmd->doc = "Show verbosity."; | |
1605 | } | |
1606 | } | |
1607 | ||
9e0b60a8 | 1608 | /* Init the history buffer. Note that we are called after the init file(s) |
371d5dec MS |
1609 | have been read so that the user can change the history file via his |
1610 | .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1611 | overrides all of this. */ | |
9e0b60a8 JM |
1612 | |
1613 | void | |
fba45db2 | 1614 | init_history (void) |
9e0b60a8 JM |
1615 | { |
1616 | char *tmpenv; | |
1617 | ||
1618 | tmpenv = getenv ("HISTSIZE"); | |
1619 | if (tmpenv) | |
840a9a1f PA |
1620 | { |
1621 | int var; | |
1622 | ||
1623 | var = atoi (tmpenv); | |
1624 | if (var < 0) | |
1625 | { | |
1626 | /* Prefer ending up with no history rather than overflowing | |
1627 | readline's history interface, which uses signed 'int' | |
1628 | everywhere. */ | |
1629 | var = 0; | |
1630 | } | |
1631 | ||
1632 | history_size_setshow_var = var; | |
1633 | } | |
1634 | /* If the init file hasn't set a size yet, pick the default. */ | |
1635 | else if (history_size_setshow_var == 0) | |
1636 | history_size_setshow_var = 256; | |
9e0b60a8 | 1637 | |
840a9a1f PA |
1638 | /* Note that unlike "set history size 0", "HISTSIZE=0" really sets |
1639 | the history size to 0... */ | |
1640 | stifle_history (history_size_setshow_var); | |
9e0b60a8 JM |
1641 | |
1642 | tmpenv = getenv ("GDBHISTFILE"); | |
1643 | if (tmpenv) | |
1b36a34b | 1644 | history_filename = xstrdup (tmpenv); |
c5aa993b JM |
1645 | else if (!history_filename) |
1646 | { | |
1647 | /* We include the current directory so that if the user changes | |
1648 | directories the file written will be the same as the one | |
1649 | that was read. */ | |
a0b3c4fd | 1650 | #ifdef __MSDOS__ |
eb2f494a | 1651 | /* No leading dots in file names are allowed on MSDOS. */ |
1754f103 MK |
1652 | history_filename = concat (current_directory, "/_gdb_history", |
1653 | (char *)NULL); | |
a0b3c4fd | 1654 | #else |
1754f103 MK |
1655 | history_filename = concat (current_directory, "/.gdb_history", |
1656 | (char *)NULL); | |
a0b3c4fd | 1657 | #endif |
c5aa993b | 1658 | } |
9e0b60a8 JM |
1659 | read_history (history_filename); |
1660 | } | |
1661 | ||
920d2a44 | 1662 | static void |
ab821bc6 PA |
1663 | show_prompt (struct ui_file *file, int from_tty, |
1664 | struct cmd_list_element *c, const char *value) | |
920d2a44 AC |
1665 | { |
1666 | fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value); | |
1667 | } | |
1668 | ||
1669 | static void | |
1670 | show_async_command_editing_p (struct ui_file *file, int from_tty, | |
1671 | struct cmd_list_element *c, const char *value) | |
1672 | { | |
3e43a32a MS |
1673 | fprintf_filtered (file, _("Editing of command lines as " |
1674 | "they are typed is %s.\n"), | |
920d2a44 AC |
1675 | value); |
1676 | } | |
1677 | ||
1678 | static void | |
1679 | show_annotation_level (struct ui_file *file, int from_tty, | |
1680 | struct cmd_list_element *c, const char *value) | |
1681 | { | |
1682 | fprintf_filtered (file, _("Annotation_level is %s.\n"), value); | |
1683 | } | |
1684 | ||
1685 | static void | |
1686 | show_exec_done_display_p (struct ui_file *file, int from_tty, | |
1687 | struct cmd_list_element *c, const char *value) | |
1688 | { | |
3e43a32a MS |
1689 | fprintf_filtered (file, _("Notification of completion for " |
1690 | "asynchronous execution commands is %s.\n"), | |
920d2a44 AC |
1691 | value); |
1692 | } | |
6dea1fbd | 1693 | |
8d551b02 DE |
1694 | /* New values of the "data-directory" parameter are staged here. */ |
1695 | static char *staged_gdb_datadir; | |
1696 | ||
6dea1fbd JK |
1697 | /* "set" command for the gdb_datadir configuration variable. */ |
1698 | ||
1699 | static void | |
1700 | set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c) | |
1701 | { | |
8d551b02 | 1702 | set_gdb_data_directory (staged_gdb_datadir); |
6dea1fbd JK |
1703 | observer_notify_gdb_datadir_changed (); |
1704 | } | |
1705 | ||
8d551b02 DE |
1706 | /* "show" command for the gdb_datadir configuration variable. */ |
1707 | ||
1708 | static void | |
1709 | show_gdb_datadir (struct ui_file *file, int from_tty, | |
1710 | struct cmd_list_element *c, const char *value) | |
1711 | { | |
1712 | fprintf_filtered (file, _("GDB's data directory is \"%s\".\n"), | |
1713 | gdb_datadir); | |
1714 | } | |
1715 | ||
97c85fc6 MB |
1716 | static void |
1717 | set_history_filename (char *args, int from_tty, struct cmd_list_element *c) | |
1718 | { | |
1719 | /* We include the current directory so that if the user changes | |
1720 | directories the file written will be the same as the one | |
1721 | that was read. */ | |
1722 | if (!IS_ABSOLUTE_PATH (history_filename)) | |
1723 | history_filename = reconcat (history_filename, current_directory, "/", | |
1724 | history_filename, (char *) NULL); | |
1725 | } | |
1726 | ||
9e0b60a8 | 1727 | static void |
fba45db2 | 1728 | init_main (void) |
9e0b60a8 | 1729 | { |
ab821bc6 PA |
1730 | /* Initialize the prompt to a simple "(gdb) " prompt or to whatever |
1731 | the DEFAULT_PROMPT is. */ | |
1732 | set_prompt (DEFAULT_PROMPT); | |
1733 | ||
362646f5 AC |
1734 | /* Set things up for annotation_level > 1, if the user ever decides |
1735 | to use it. */ | |
1736 | async_annotation_suffix = "prompt"; | |
362646f5 | 1737 | |
9e0b60a8 JM |
1738 | /* Set the important stuff up for command editing. */ |
1739 | command_editing_p = 1; | |
9e0b60a8 | 1740 | history_expansion_p = 0; |
452a569e | 1741 | write_history_p = 0; |
9e0b60a8 JM |
1742 | |
1743 | /* Setup important stuff for command line editing. */ | |
67c296a2 | 1744 | rl_completion_word_break_hook = gdb_completion_word_break_characters; |
38017ce8 | 1745 | rl_completion_entry_function = readline_line_completion_function; |
51065942 | 1746 | rl_completer_word_break_characters = default_word_break_characters (); |
d318976c | 1747 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); |
9e0b60a8 | 1748 | rl_readline_name = "gdb"; |
7cb3ec5e | 1749 | rl_terminal_name = getenv ("TERM"); |
9e0b60a8 | 1750 | |
467d8519 TT |
1751 | /* The name for this defun comes from Bash, where it originated. |
1752 | 15 is Control-o, the same binding this function has in Bash. */ | |
1753 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1754 | ||
4d28ad1e | 1755 | add_setshow_string_cmd ("prompt", class_support, |
ab821bc6 | 1756 | &top_prompt, |
3e43a32a MS |
1757 | _("Set gdb's prompt"), |
1758 | _("Show gdb's prompt"), | |
ab821bc6 PA |
1759 | NULL, NULL, |
1760 | show_prompt, | |
4d28ad1e | 1761 | &setlist, &showlist); |
9e0b60a8 | 1762 | |
1bedd215 | 1763 | add_com ("dont-repeat", class_support, dont_repeat_command, _("\ |
3e43a32a MS |
1764 | Don't repeat this command.\nPrimarily \ |
1765 | used inside of user-defined commands that should not be repeated when\n\ | |
1bedd215 | 1766 | hitting return.")); |
9e0b60a8 | 1767 | |
5bf193a2 AC |
1768 | add_setshow_boolean_cmd ("editing", class_support, |
1769 | &async_command_editing_p, _("\ | |
1770 | Set editing of command lines as they are typed."), _("\ | |
1771 | Show editing of command lines as they are typed."), _("\ | |
9e0b60a8 JM |
1772 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
1773 | Without an argument, command line editing is enabled. To edit, use\n\ | |
5bf193a2 AC |
1774 | EMACS-like or VI-like commands like control-P or ESC."), |
1775 | set_async_editing_command, | |
920d2a44 | 1776 | show_async_command_editing_p, |
5bf193a2 AC |
1777 | &setlist, &showlist); |
1778 | ||
1779 | add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\ | |
1780 | Set saving of the history record on exit."), _("\ | |
1781 | Show saving of the history record on exit."), _("\ | |
9e0b60a8 | 1782 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
5bf193a2 AC |
1783 | Without an argument, saving is enabled."), |
1784 | NULL, | |
920d2a44 | 1785 | show_write_history_p, |
5bf193a2 | 1786 | &sethistlist, &showhistlist); |
9e0b60a8 | 1787 | |
840a9a1f | 1788 | add_setshow_uinteger_cmd ("size", no_class, &history_size_setshow_var, _("\ |
4d28ad1e AC |
1789 | Set the size of the command history,"), _("\ |
1790 | Show the size of the command history,"), _("\ | |
f81d1120 PA |
1791 | ie. the number of previous commands to keep a record of.\n\ |
1792 | If set to \"unlimited\", the number of commands kept in the history\n\ | |
1793 | list is unlimited. This defaults to the value of the environment\n\ | |
1794 | variable \"HISTSIZE\", or to 256 if this variable is not set."), | |
883b9c6c YQ |
1795 | set_history_size_command, |
1796 | show_history_size, | |
1797 | &sethistlist, &showhistlist); | |
4d28ad1e AC |
1798 | |
1799 | add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\ | |
1800 | Set the filename in which to record the command history"), _("\ | |
1801 | Show the filename in which to record the command history"), _("\ | |
1802 | (the list of previous commands of which a record is kept)."), | |
97c85fc6 | 1803 | set_history_filename, |
920d2a44 | 1804 | show_history_filename, |
4d28ad1e | 1805 | &sethistlist, &showhistlist); |
9e0b60a8 | 1806 | |
e360902b | 1807 | add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\ |
5bf193a2 AC |
1808 | Set whether to confirm potentially dangerous operations."), _("\ |
1809 | Show whether to confirm potentially dangerous operations."), NULL, | |
1810 | NULL, | |
e360902b | 1811 | show_confirm, |
5bf193a2 | 1812 | &setlist, &showlist); |
9e0b60a8 | 1813 | |
85c07804 AC |
1814 | add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\ |
1815 | Set annotation_level."), _("\ | |
1816 | Show annotation_level."), _("\ | |
9e0b60a8 | 1817 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
85c07804 | 1818 | 2 == output annotated suitably for use by programs that control GDB."), |
ab821bc6 | 1819 | NULL, |
920d2a44 | 1820 | show_annotation_level, |
85c07804 | 1821 | &setlist, &showlist); |
362646f5 | 1822 | |
5bf193a2 AC |
1823 | add_setshow_boolean_cmd ("exec-done-display", class_support, |
1824 | &exec_done_display_p, _("\ | |
1825 | Set notification of completion for asynchronous execution commands."), _("\ | |
1826 | Show notification of completion for asynchronous execution commands."), _("\ | |
1827 | Use \"on\" to enable the notification, and \"off\" to disable it."), | |
1828 | NULL, | |
920d2a44 | 1829 | show_exec_done_display_p, |
5bf193a2 | 1830 | &setlist, &showlist); |
b14b1491 TT |
1831 | |
1832 | add_setshow_filename_cmd ("data-directory", class_maintenance, | |
8d551b02 | 1833 | &staged_gdb_datadir, _("Set GDB's data directory."), |
b14b1491 TT |
1834 | _("Show GDB's data directory."), |
1835 | _("\ | |
1836 | When set, GDB uses the specified path to search for data files."), | |
8d551b02 | 1837 | set_gdb_datadir, show_gdb_datadir, |
b14b1491 TT |
1838 | &setlist, |
1839 | &showlist); | |
9e0b60a8 | 1840 | } |
64cdedad EZ |
1841 | |
1842 | void | |
1843 | gdb_init (char *argv0) | |
1844 | { | |
1845 | if (pre_init_ui_hook) | |
1846 | pre_init_ui_hook (); | |
1847 | ||
371d5dec | 1848 | /* Run the init function of each source file. */ |
64cdedad | 1849 | |
64cdedad EZ |
1850 | #ifdef __MSDOS__ |
1851 | /* Make sure we return to the original directory upon exit, come | |
1852 | what may, since the OS doesn't do that for us. */ | |
1853 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1854 | #endif | |
1855 | ||
371d5dec MS |
1856 | init_cmd_lists (); /* This needs to be done first. */ |
1857 | initialize_targets (); /* Setup target_terminal macros for utils.c. */ | |
1858 | initialize_utils (); /* Make errors and warnings possible. */ | |
9dea9163 DE |
1859 | |
1860 | /* Here is where we call all the _initialize_foo routines. */ | |
64cdedad | 1861 | initialize_all_files (); |
9dea9163 | 1862 | |
6c95b8df PA |
1863 | /* This creates the current_program_space. Do this after all the |
1864 | _initialize_foo routines have had a chance to install their | |
1865 | per-sspace data keys. Also do this before | |
1866 | initialize_current_architecture is called, because it accesses | |
1867 | exec_bfd of the current program space. */ | |
1868 | initialize_progspace (); | |
1869 | initialize_inferiors (); | |
64cdedad EZ |
1870 | initialize_current_architecture (); |
1871 | init_cli_cmds(); | |
843b20dc | 1872 | initialize_event_loop (); |
371d5dec | 1873 | init_main (); /* But that omits this file! Do it now. */ |
64cdedad | 1874 | |
0ea3f30e DJ |
1875 | initialize_stdin_serial (); |
1876 | ||
362646f5 | 1877 | async_init_signals (); |
64cdedad | 1878 | |
371d5dec MS |
1879 | /* We need a default language for parsing expressions, so simple |
1880 | things like "set width 0" won't fail if no language is explicitly | |
1881 | set in a config file or implicitly set by reading an executable | |
1882 | during startup. */ | |
64cdedad | 1883 | set_language (language_c); |
371d5dec | 1884 | expected_language = current_language; /* Don't warn about the change. */ |
64cdedad | 1885 | |
c378eb4e | 1886 | /* Allow another UI to initialize. If the UI fails to initialize, |
9a4105ab AC |
1887 | and it wants GDB to revert to the CLI, it should clear |
1888 | deprecated_init_ui_hook. */ | |
1889 | if (deprecated_init_ui_hook) | |
1890 | deprecated_init_ui_hook (argv0); | |
9dea9163 | 1891 | |
6dddc817 | 1892 | /* Python initialization, for example, can require various commands to be |
371d5dec MS |
1893 | installed. For example "info pretty-printer" needs the "info" |
1894 | prefix to be installed. Keep things simple and just do final | |
6dddc817 DE |
1895 | script initialization here. */ |
1896 | finish_ext_lang_initialization (); | |
64cdedad | 1897 | } |