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" |
3212b858 | 54 | #include "gdb_select.h" |
c906108c | 55 | |
371d5dec | 56 | /* readline include files. */ |
dbda9972 AC |
57 | #include "readline/readline.h" |
58 | #include "readline/history.h" | |
c906108c SS |
59 | |
60 | /* readline defines this. */ | |
61 | #undef savestring | |
62 | ||
63 | #include <sys/types.h> | |
c906108c | 64 | |
c2c6d25f | 65 | #include "event-top.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 | |
18206ca3 PP |
73 | #if defined(TUI) |
74 | # include "tui/tui.h" | |
75 | #endif | |
76 | ||
ca7b0bbc TT |
77 | extern void initialize_all_files (void); |
78 | ||
95298e72 PM |
79 | #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt |
80 | #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix | |
81 | #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix | |
82 | ||
371d5dec | 83 | /* Default command line prompt. This is overriden in some configs. */ |
104c1213 JM |
84 | |
85 | #ifndef DEFAULT_PROMPT | |
86 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
87 | #endif |
88 | ||
e655c1a2 | 89 | /* Initialization file name for gdb. This is host-dependent. */ |
eaae3919 | 90 | |
e655c1a2 | 91 | const char gdbinit[] = GDBINIT; |
c906108c SS |
92 | |
93 | int inhibit_gdbinit = 0; | |
94 | ||
c906108c SS |
95 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
96 | ||
050a2e1d PA |
97 | /* Flag for whether we want to confirm potentially dangerous |
98 | operations. Default is yes. */ | |
99 | ||
e360902b | 100 | int confirm = 1; |
c906108c | 101 | |
920d2a44 | 102 | static void |
e360902b | 103 | show_confirm (struct ui_file *file, int from_tty, |
920d2a44 AC |
104 | struct cmd_list_element *c, const char *value) |
105 | { | |
3e43a32a MS |
106 | fprintf_filtered (file, _("Whether to confirm potentially " |
107 | "dangerous operations is %s.\n"), | |
920d2a44 AC |
108 | value); |
109 | } | |
c906108c | 110 | |
371d5dec MS |
111 | /* stdio stream that command input is being read from. Set to stdin |
112 | normally. Set by source_command to the file we are sourcing. Set | |
113 | to NULL if we are executing a user-defined command or interacting | |
114 | via a GUI. */ | |
c906108c SS |
115 | |
116 | FILE *instream; | |
117 | ||
698ba934 DJ |
118 | /* Flag to indicate whether a user defined command is currently running. */ |
119 | ||
120 | int in_user_command; | |
121 | ||
c906108c SS |
122 | /* Current working directory. */ |
123 | ||
124 | char *current_directory; | |
125 | ||
126 | /* The directory name is actually stored here (usually). */ | |
127 | char gdb_dirbuf[1024]; | |
128 | ||
2669cade PA |
129 | /* The last command line executed on the console. Used for command |
130 | repetitions. */ | |
dc7eb48e | 131 | char *saved_command_line; |
c906108c SS |
132 | |
133 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 134 | affects things like recording into the command history, commands |
c906108c SS |
135 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
136 | whatever) can issue its own commands and also send along commands | |
137 | from the user, and have the user not notice that the user interface | |
138 | is issuing commands too. */ | |
139 | int server_command; | |
140 | ||
371d5dec | 141 | /* Timeout limit for response from target. */ |
c906108c | 142 | |
ce808e91 AC |
143 | /* The default value has been changed many times over the years. It |
144 | was originally 5 seconds. But that was thought to be a long time | |
145 | to sit and wait, so it was changed to 2 seconds. That was thought | |
146 | to be plenty unless the connection was going through some terminal | |
147 | server or multiplexer or other form of hairy serial connection. | |
148 | ||
149 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
150 | it began being used in other remote-* targets. It appears that the | |
151 | default was changed to 20 seconds at that time, perhaps because the | |
85a453d5 | 152 | Renesas E7000 ICE didn't always respond in a timely manner. |
ce808e91 AC |
153 | |
154 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
155 | 20 seconds is far worse. This demonstrates the difficulty of using | |
156 | a single variable for all protocol timeouts. | |
157 | ||
158 | As remote.c is used much more than remote-e7000.c, it was changed | |
371d5dec | 159 | back to 2 seconds in 1999. */ |
ce808e91 AC |
160 | |
161 | int remote_timeout = 2; | |
c906108c SS |
162 | |
163 | /* Non-zero tells remote* modules to output debugging info. */ | |
164 | ||
165 | int remote_debug = 0; | |
166 | ||
6dd77b81 RH |
167 | /* Sbrk location on entry to main. Used for statistics only. */ |
168 | #ifdef HAVE_SBRK | |
169 | char *lim_at_start; | |
170 | #endif | |
171 | ||
c906108c SS |
172 | /* Hooks for alternate command interfaces. */ |
173 | ||
371d5dec MS |
174 | /* This hook is called from within gdb's many mini-event loops which |
175 | could steal control from a real user interface's event loop. It | |
176 | returns non-zero if the user is requesting a detach, zero | |
177 | otherwise. */ | |
7a292a7a | 178 | |
98bbd631 | 179 | int (*deprecated_ui_loop_hook) (int); |
c906108c | 180 | |
c906108c | 181 | |
c906108c SS |
182 | /* Called from print_frame_info to list the line we stopped in. */ |
183 | ||
371d5dec MS |
184 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, |
185 | int line, | |
186 | int stopline, | |
187 | int noerror); | |
c906108c SS |
188 | /* Replaces most of query. */ |
189 | ||
9a4105ab | 190 | int (*deprecated_query_hook) (const char *, va_list); |
c906108c SS |
191 | |
192 | /* Replaces most of warning. */ | |
193 | ||
9a4105ab | 194 | void (*deprecated_warning_hook) (const char *, va_list); |
c906108c | 195 | |
9a4105ab AC |
196 | /* These three functions support getting lines of text from the user. |
197 | They are used in sequence. First deprecated_readline_begin_hook is | |
198 | called with a text string that might be (for example) a message for | |
199 | the user to type in a sequence of commands to be executed at a | |
200 | breakpoint. If this function calls back to a GUI, it might take | |
201 | this opportunity to pop up a text interaction window with this | |
202 | message. Next, deprecated_readline_hook is called with a prompt | |
203 | that is emitted prior to collecting the user input. It can be | |
204 | called multiple times. Finally, deprecated_readline_end_hook is | |
205 | called to notify the GUI that we are done with the interaction | |
206 | window and it can close it. */ | |
c906108c | 207 | |
9a4105ab | 208 | void (*deprecated_readline_begin_hook) (char *, ...); |
38bcc89d | 209 | char *(*deprecated_readline_hook) (const char *); |
9a4105ab | 210 | void (*deprecated_readline_end_hook) (void); |
c906108c | 211 | |
6426a772 | 212 | /* Called as appropriate to notify the interface that we have attached |
371d5dec | 213 | to or detached from an already running process. */ |
6426a772 | 214 | |
9a4105ab AC |
215 | void (*deprecated_attach_hook) (void); |
216 | void (*deprecated_detach_hook) (void); | |
6426a772 | 217 | |
371d5dec MS |
218 | /* Called during long calculations to allow GUI to repair window |
219 | damage, and to check for stop buttons, etc... */ | |
c906108c | 220 | |
9a4105ab | 221 | void (*deprecated_interactive_hook) (void); |
c906108c | 222 | |
371d5dec MS |
223 | /* Called when going to wait for the target. Usually allows the GUI |
224 | to run while waiting for target events. */ | |
c906108c | 225 | |
9a4105ab | 226 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, |
47608cb1 PA |
227 | struct target_waitstatus *status, |
228 | int options); | |
c906108c | 229 | |
371d5dec MS |
230 | /* Used by UI as a wrapper around command execution. May do various |
231 | things like enabling/disabling buttons, etc... */ | |
c906108c | 232 | |
371d5dec MS |
233 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, |
234 | char *cmd, int from_tty); | |
c906108c SS |
235 | |
236 | /* Called when the current thread changes. Argument is thread id. */ | |
237 | ||
9a4105ab | 238 | void (*deprecated_context_hook) (int id); |
c906108c | 239 | |
c906108c SS |
240 | /* Handler for SIGHUP. */ |
241 | ||
242 | #ifdef SIGHUP | |
392a587b | 243 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 | 244 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 245 | event-top.c into this file, top.c. */ |
b2cd6b29 JM |
246 | /* static */ void |
247 | quit_cover (void) | |
c906108c | 248 | { |
e360902b PA |
249 | /* Stop asking user for confirmation --- we're exiting. This |
250 | prevents asking the user dumb questions. */ | |
251 | confirm = 0; | |
c5aa993b | 252 | quit_command ((char *) 0, 0); |
c906108c SS |
253 | } |
254 | #endif /* defined SIGHUP */ | |
255 | \f | |
7a9dd1b2 | 256 | /* Line number we are currently in, in a file which is being sourced. */ |
392a587b | 257 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 258 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 259 | event-top.c into this file, top.c. */ |
cd0fc7c3 | 260 | /* static */ int source_line_number; |
c906108c SS |
261 | |
262 | /* Name of the file we are sourcing. */ | |
392a587b | 263 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 264 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 265 | event-top.c into this file, top.c. */ |
05159abe | 266 | /* static */ const char *source_file_name; |
c906108c | 267 | |
c906108c SS |
268 | /* Clean up on error during a "source" command (or execution of a |
269 | user-defined command). */ | |
270 | ||
d318976c | 271 | void |
e41a3b1a | 272 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
273 | { |
274 | /* Restore the previous input stream. */ | |
19ba03f4 | 275 | instream = (FILE *) stream; |
c906108c SS |
276 | } |
277 | ||
278 | /* Read commands from STREAM. */ | |
279 | void | |
fba45db2 | 280 | read_command_file (FILE *stream) |
c906108c SS |
281 | { |
282 | struct cleanup *cleanups; | |
283 | ||
e41a3b1a | 284 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 285 | instream = stream; |
faa4ebe1 PA |
286 | |
287 | /* Read commands from `instream' and execute them until end of file | |
288 | or error reading instream. */ | |
289 | ||
290 | while (instream != NULL && !feof (instream)) | |
291 | { | |
292 | char *command; | |
293 | ||
294 | /* Get a command-line. This calls the readline package. */ | |
295 | command = command_line_input (NULL, 0, NULL); | |
296 | if (command == NULL) | |
297 | break; | |
298 | command_handler (command); | |
299 | } | |
300 | ||
c906108c SS |
301 | do_cleanups (cleanups); |
302 | } | |
303 | \f | |
507f3c78 | 304 | void (*pre_init_ui_hook) (void); |
c906108c | 305 | |
e41a3b1a | 306 | #ifdef __MSDOS__ |
70976b65 | 307 | static void |
e41a3b1a AC |
308 | do_chdir_cleanup (void *old_dir) |
309 | { | |
310 | chdir (old_dir); | |
b8c9b27d | 311 | xfree (old_dir); |
e41a3b1a AC |
312 | } |
313 | #endif | |
314 | ||
028d0ed5 | 315 | struct cleanup * |
4e5d721f DE |
316 | prepare_execute_command (void) |
317 | { | |
028d0ed5 TJB |
318 | struct value *mark; |
319 | struct cleanup *cleanup; | |
320 | ||
321 | mark = value_mark (); | |
322 | cleanup = make_cleanup_value_free_to_mark (mark); | |
4e5d721f | 323 | |
371d5dec MS |
324 | /* With multiple threads running while the one we're examining is |
325 | stopped, the dcache can get stale without us being able to detect | |
326 | it. For the duration of the command, though, use the dcache to | |
327 | help things like backtrace. */ | |
4e5d721f DE |
328 | if (non_stop) |
329 | target_dcache_invalidate (); | |
028d0ed5 TJB |
330 | |
331 | return cleanup; | |
4e5d721f DE |
332 | } |
333 | ||
77cce10f PA |
334 | /* Tell the user if the language has changed (except first time) after |
335 | executing a command. */ | |
336 | ||
337 | void | |
338 | check_frame_language_change (void) | |
339 | { | |
340 | static int warned = 0; | |
7ff38b1c | 341 | struct frame_info *frame; |
77cce10f PA |
342 | |
343 | /* First make sure that a new frame has been selected, in case the | |
344 | command or the hooks changed the program state. */ | |
7ff38b1c | 345 | frame = deprecated_safe_get_selected_frame (); |
77cce10f PA |
346 | if (current_language != expected_language) |
347 | { | |
348 | if (language_mode == language_mode_auto && info_verbose) | |
349 | { | |
350 | language_info (1); /* Print what changed. */ | |
351 | } | |
352 | warned = 0; | |
353 | } | |
354 | ||
355 | /* Warn the user if the working language does not match the language | |
356 | of the current frame. Only warn the user if we are actually | |
357 | running the program, i.e. there is a stack. */ | |
358 | /* FIXME: This should be cacheing the frame and only running when | |
359 | the frame changes. */ | |
360 | ||
361 | if (has_stack_frames ()) | |
362 | { | |
363 | enum language flang; | |
364 | ||
7ff38b1c | 365 | flang = get_frame_language (frame); |
77cce10f PA |
366 | if (!warned |
367 | && flang != language_unknown | |
368 | && flang != current_language->la_language) | |
369 | { | |
370 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
371 | warned = 1; | |
372 | } | |
373 | } | |
374 | } | |
375 | ||
98880d46 PA |
376 | /* See top.h. */ |
377 | ||
0b333c5e PA |
378 | void |
379 | wait_sync_command_done (void) | |
380 | { | |
381 | while (gdb_do_one_event () >= 0) | |
382 | if (!sync_execution) | |
383 | break; | |
384 | } | |
385 | ||
386 | /* See top.h. */ | |
387 | ||
98880d46 PA |
388 | void |
389 | maybe_wait_sync_command_done (int was_sync) | |
390 | { | |
391 | /* If the interpreter is in sync mode (we're running a user | |
392 | command's list, running command hooks or similars), and we | |
393 | just ran a synchronous command that started the target, wait | |
394 | for that command to end. */ | |
395 | if (!interpreter_async && !was_sync && sync_execution) | |
0b333c5e | 396 | wait_sync_command_done (); |
98880d46 PA |
397 | } |
398 | ||
648bf667 | 399 | /* Execute the line P as a command, in the current user context. |
d318976c | 400 | Pass FROM_TTY as second argument to the defining function. */ |
c906108c | 401 | |
d318976c FN |
402 | void |
403 | execute_command (char *p, int from_tty) | |
c906108c | 404 | { |
353d1d73 | 405 | struct cleanup *cleanup_if_error, *cleanup; |
52f0bd74 | 406 | struct cmd_list_element *c; |
d318976c | 407 | char *line; |
4e5d721f | 408 | |
353d1d73 | 409 | cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
028d0ed5 | 410 | cleanup = prepare_execute_command (); |
c906108c | 411 | |
d318976c FN |
412 | /* Force cleanup of any alloca areas if using C alloca instead of |
413 | a builtin alloca. */ | |
414 | alloca (0); | |
c906108c | 415 | |
d318976c FN |
416 | /* This can happen when command_line_input hits end of file. */ |
417 | if (p == NULL) | |
5fe41fbf TT |
418 | { |
419 | do_cleanups (cleanup); | |
5ae85e44 | 420 | discard_cleanups (cleanup_if_error); |
5fe41fbf TT |
421 | return; |
422 | } | |
c906108c | 423 | |
49d03eab | 424 | target_log_command (p); |
8b93c638 | 425 | |
d318976c FN |
426 | while (*p == ' ' || *p == '\t') |
427 | p++; | |
428 | if (*p) | |
8b93c638 | 429 | { |
6f937416 | 430 | const char *cmd = p; |
d318976c | 431 | char *arg; |
90e28950 TT |
432 | int was_sync = sync_execution; |
433 | ||
d318976c | 434 | line = p; |
8b93c638 | 435 | |
16026cd7 AS |
436 | /* If trace-commands is set then this will print this command. */ |
437 | print_command_trace (p); | |
438 | ||
6f937416 PA |
439 | c = lookup_cmd (&cmd, cmdlist, "", 0, 1); |
440 | p = (char *) cmd; | |
8b93c638 | 441 | |
d318976c FN |
442 | /* Pass null arg rather than an empty one. */ |
443 | arg = *p ? p : 0; | |
8b93c638 | 444 | |
9f60d481 AC |
445 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
446 | while the is_complete_command(cfunc) test is just plain | |
447 | bogus. They should both be replaced by a test of the form | |
448 | c->strip_trailing_white_space_p. */ | |
449 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
450 | can't be replaced with func. This is because it is the | |
451 | cfunc, and not the func, that has the value that the | |
452 | is_complete_command hack is testing for. */ | |
453 | /* Clear off trailing whitespace, except for set and complete | |
454 | command. */ | |
d318976c FN |
455 | if (arg |
456 | && c->type != set_cmd | |
bbaca940 | 457 | && !is_complete_command (c)) |
8b93c638 | 458 | { |
d318976c FN |
459 | p = arg + strlen (arg) - 1; |
460 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
461 | p--; | |
462 | *(p + 1) = '\0'; | |
8b93c638 JM |
463 | } |
464 | ||
371d5dec | 465 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 466 | execute_cmd_pre_hook (c); |
c906108c | 467 | |
1f2bdf09 | 468 | if (c->deprecated_warn_user) |
6f937416 | 469 | deprecated_cmd_warning (line); |
c906108c | 470 | |
7d74f244 | 471 | /* c->user_commands would be NULL in the case of a python command. */ |
fe978cb0 | 472 | if (c->theclass == class_user && c->user_commands) |
d318976c | 473 | execute_user_command (c, arg); |
5b9afe8a YQ |
474 | else if (c->type == set_cmd) |
475 | do_set_command (arg, from_tty, c); | |
476 | else if (c->type == show_cmd) | |
477 | do_show_command (arg, from_tty, c); | |
f436dd25 | 478 | else if (!cmd_func_p (c)) |
8a3fe4f8 | 479 | error (_("That is not a command, just a help topic.")); |
9a4105ab | 480 | else if (deprecated_call_command_hook) |
050a2e1d | 481 | deprecated_call_command_hook (c, arg, from_tty); |
d318976c | 482 | else |
050a2e1d | 483 | cmd_func (c, arg, from_tty); |
b4a14fd0 | 484 | |
98880d46 | 485 | maybe_wait_sync_command_done (was_sync); |
b4a14fd0 | 486 | |
371d5dec | 487 | /* If this command has been post-hooked, run the hook last. */ |
5913bcb0 | 488 | execute_cmd_post_hook (c); |
c906108c | 489 | |
c906108c SS |
490 | } |
491 | ||
77cce10f | 492 | check_frame_language_change (); |
028d0ed5 | 493 | |
353d1d73 JK |
494 | do_cleanups (cleanup); |
495 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
496 | } |
497 | ||
5da1313b JK |
498 | /* Run execute_command for P and FROM_TTY. Capture its output into the |
499 | returned string, do not display it to the screen. BATCH_FLAG will be | |
500 | temporarily set to true. */ | |
501 | ||
502 | char * | |
503 | execute_command_to_string (char *p, int from_tty) | |
504 | { | |
505 | struct ui_file *str_file; | |
506 | struct cleanup *cleanup; | |
507 | char *retval; | |
508 | ||
509 | /* GDB_STDOUT should be better already restored during these | |
510 | restoration callbacks. */ | |
511 | cleanup = set_batch_flag_and_make_cleanup_restore_page_info (); | |
512 | ||
b4a14fd0 PA |
513 | make_cleanup_restore_integer (&interpreter_async); |
514 | interpreter_async = 0; | |
515 | ||
5da1313b JK |
516 | str_file = mem_fileopen (); |
517 | ||
8d4d924b | 518 | make_cleanup_ui_file_delete (str_file); |
5da1313b JK |
519 | make_cleanup_restore_ui_file (&gdb_stdout); |
520 | make_cleanup_restore_ui_file (&gdb_stderr); | |
8d4d924b JK |
521 | make_cleanup_restore_ui_file (&gdb_stdlog); |
522 | make_cleanup_restore_ui_file (&gdb_stdtarg); | |
523 | make_cleanup_restore_ui_file (&gdb_stdtargerr); | |
524 | ||
79a45e25 | 525 | if (ui_out_redirect (current_uiout, str_file) < 0) |
8d4d924b JK |
526 | warning (_("Current output protocol does not support redirection")); |
527 | else | |
79a45e25 | 528 | make_cleanup_ui_out_redirect_pop (current_uiout); |
5da1313b JK |
529 | |
530 | gdb_stdout = str_file; | |
531 | gdb_stderr = str_file; | |
8d4d924b JK |
532 | gdb_stdlog = str_file; |
533 | gdb_stdtarg = str_file; | |
534 | gdb_stdtargerr = str_file; | |
5da1313b JK |
535 | |
536 | execute_command (p, from_tty); | |
537 | ||
538 | retval = ui_file_xstrdup (str_file, NULL); | |
539 | ||
540 | do_cleanups (cleanup); | |
541 | ||
542 | return retval; | |
543 | } | |
544 | ||
d318976c | 545 | \f |
47a80e90 TT |
546 | /* When nonzero, cause dont_repeat to do nothing. This should only be |
547 | set via prevent_dont_repeat. */ | |
548 | ||
549 | static int suppress_dont_repeat = 0; | |
550 | ||
d318976c | 551 | /* Commands call this if they do not want to be repeated by null lines. */ |
9e0b60a8 | 552 | |
d318976c FN |
553 | void |
554 | dont_repeat (void) | |
9e0b60a8 | 555 | { |
47a80e90 | 556 | if (suppress_dont_repeat || server_command) |
d318976c | 557 | return; |
9e0b60a8 | 558 | |
d318976c | 559 | /* If we aren't reading from standard input, we are saving the last |
371d5dec MS |
560 | thing read from stdin in line and don't want to delete it. Null |
561 | lines won't repeat here in any case. */ | |
d318976c | 562 | if (instream == stdin) |
dc7eb48e | 563 | *saved_command_line = 0; |
9e0b60a8 | 564 | } |
47a80e90 TT |
565 | |
566 | /* Prevent dont_repeat from working, and return a cleanup that | |
567 | restores the previous state. */ | |
568 | ||
569 | struct cleanup * | |
570 | prevent_dont_repeat (void) | |
571 | { | |
572 | struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat); | |
573 | ||
574 | suppress_dont_repeat = 1; | |
575 | return result; | |
576 | } | |
577 | ||
d318976c FN |
578 | \f |
579 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 580 | |
7a3bde34 | 581 | It prints PROMPT once at the start. |
d318976c FN |
582 | Action is compatible with "readline", e.g. space for the result is |
583 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 584 | |
d318976c | 585 | A NULL return means end of file. */ |
c5c136ea PA |
586 | |
587 | static char * | |
7a3bde34 | 588 | gdb_readline_no_editing (const char *prompt) |
9e0b60a8 | 589 | { |
7a3bde34 | 590 | struct buffer line_buffer; |
3212b858 PA |
591 | /* Read from stdin if we are executing a user defined command. This |
592 | is the right thing for prompt_for_continue, at least. */ | |
593 | FILE *stream = instream != NULL ? instream : stdin; | |
594 | int fd = fileno (stream); | |
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 | 609 | int c; |
3212b858 PA |
610 | int numfds; |
611 | fd_set readfds; | |
7a3bde34 | 612 | |
3212b858 PA |
613 | QUIT; |
614 | ||
615 | /* Wait until at least one byte of data is available. Control-C | |
f0881b37 | 616 | can interrupt interruptible_select, but not fgetc. */ |
3212b858 PA |
617 | FD_ZERO (&readfds); |
618 | FD_SET (fd, &readfds); | |
f0881b37 | 619 | if (interruptible_select (fd + 1, &readfds, NULL, NULL, NULL) == -1) |
3212b858 PA |
620 | { |
621 | if (errno == EINTR) | |
622 | { | |
623 | /* If this was ctrl-c, the QUIT above handles it. */ | |
624 | continue; | |
625 | } | |
626 | perror_with_name (("select")); | |
627 | } | |
628 | ||
629 | c = fgetc (stream); | |
9e0b60a8 | 630 | |
d318976c | 631 | if (c == EOF) |
9e0b60a8 | 632 | { |
7a3bde34 | 633 | if (line_buffer.used_size > 0) |
d318976c FN |
634 | /* The last line does not end with a newline. Return it, and |
635 | if we are called again fgetc will still return EOF and | |
636 | we'll return NULL then. */ | |
9e0b60a8 | 637 | break; |
7a3bde34 | 638 | xfree (buffer_finish (&line_buffer)); |
d318976c | 639 | return NULL; |
9e0b60a8 | 640 | } |
c5aa993b | 641 | |
d318976c | 642 | if (c == '\n') |
9e0b60a8 | 643 | { |
7a3bde34 PA |
644 | if (line_buffer.used_size > 0 |
645 | && line_buffer.buffer[line_buffer.used_size - 1] == '\r') | |
646 | line_buffer.used_size--; | |
d318976c | 647 | break; |
9e0b60a8 | 648 | } |
9e0b60a8 | 649 | |
7a3bde34 | 650 | buffer_grow_char (&line_buffer, c); |
9e0b60a8 JM |
651 | } |
652 | ||
7a3bde34 PA |
653 | buffer_grow_char (&line_buffer, '\0'); |
654 | return buffer_finish (&line_buffer); | |
9e0b60a8 JM |
655 | } |
656 | ||
d318976c FN |
657 | /* Variables which control command line editing and history |
658 | substitution. These variables are given default values at the end | |
659 | of this file. */ | |
660 | static int command_editing_p; | |
920d2a44 | 661 | |
d318976c FN |
662 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
663 | gdb to use the event loop as the default command loop and we merge | |
c378eb4e | 664 | event-top.c into this file, top.c. */ |
920d2a44 | 665 | |
d318976c | 666 | /* static */ int history_expansion_p; |
920d2a44 | 667 | |
d318976c | 668 | static int write_history_p; |
920d2a44 AC |
669 | static void |
670 | show_write_history_p (struct ui_file *file, int from_tty, | |
671 | struct cmd_list_element *c, const char *value) | |
672 | { | |
673 | fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"), | |
674 | value); | |
675 | } | |
676 | ||
840a9a1f | 677 | /* The variable associated with the "set/show history size" |
ebfd00d2 PP |
678 | command. The value -1 means unlimited, and -2 means undefined. */ |
679 | static int history_size_setshow_var = -2; | |
840a9a1f | 680 | |
920d2a44 AC |
681 | static void |
682 | show_history_size (struct ui_file *file, int from_tty, | |
683 | struct cmd_list_element *c, const char *value) | |
684 | { | |
685 | fprintf_filtered (file, _("The size of the command history is %s.\n"), | |
686 | value); | |
687 | } | |
688 | ||
fc637f04 PP |
689 | /* Variable associated with the "history remove-duplicates" option. |
690 | The value -1 means unlimited. */ | |
691 | static int history_remove_duplicates = 0; | |
692 | ||
693 | static void | |
694 | show_history_remove_duplicates (struct ui_file *file, int from_tty, | |
695 | struct cmd_list_element *c, const char *value) | |
696 | { | |
697 | fprintf_filtered (file, | |
698 | _("The number of history entries to look back at for " | |
699 | "duplicates is %s.\n"), | |
700 | value); | |
701 | } | |
702 | ||
d318976c | 703 | static char *history_filename; |
920d2a44 AC |
704 | static void |
705 | show_history_filename (struct ui_file *file, int from_tty, | |
706 | struct cmd_list_element *c, const char *value) | |
707 | { | |
3e43a32a MS |
708 | fprintf_filtered (file, _("The filename in which to record " |
709 | "the command history is \"%s\".\n"), | |
920d2a44 AC |
710 | value); |
711 | } | |
9e0b60a8 | 712 | |
b4f5539f | 713 | /* This is like readline(), but it has some gdb-specific behavior. |
2e03ee74 | 714 | gdb may want readline in both the synchronous and async modes during |
b4f5539f TT |
715 | a single gdb invocation. At the ordinary top-level prompt we might |
716 | be using the async readline. That means we can't use | |
717 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
718 | However, for a secondary prompt (" >", such as occurs during a | |
2e03ee74 DJ |
719 | `define'), gdb wants a synchronous response. |
720 | ||
721 | We used to call readline() directly, running it in synchronous | |
722 | mode. But mixing modes this way is not supported, and as of | |
723 | readline 5.x it no longer works; the arrow keys come unbound during | |
724 | the synchronous call. So we make a nested call into the event | |
725 | loop. That's what gdb_readline_wrapper is for. */ | |
726 | ||
727 | /* A flag set as soon as gdb_readline_wrapper_line is called; we can't | |
728 | rely on gdb_readline_wrapper_result, which might still be NULL if | |
729 | the user types Control-D for EOF. */ | |
730 | static int gdb_readline_wrapper_done; | |
731 | ||
732 | /* The result of the current call to gdb_readline_wrapper, once a newline | |
733 | is seen. */ | |
734 | static char *gdb_readline_wrapper_result; | |
735 | ||
736 | /* Any intercepted hook. Operate-and-get-next sets this, expecting it | |
737 | to be called after the newline is processed (which will redisplay | |
738 | the prompt). But in gdb_readline_wrapper we will not get a new | |
739 | prompt until the next call, or until we return to the event loop. | |
740 | So we disable this hook around the newline and restore it before we | |
741 | return. */ | |
742 | static void (*saved_after_char_processing_hook) (void); | |
743 | ||
948578a9 PP |
744 | |
745 | /* The number of nested readline secondary prompts that are currently | |
746 | active. */ | |
747 | ||
748 | static int gdb_secondary_prompt_depth = 0; | |
749 | ||
750 | /* See top.h. */ | |
751 | ||
752 | int | |
753 | gdb_in_secondary_prompt_p (void) | |
754 | { | |
755 | return gdb_secondary_prompt_depth > 0; | |
756 | } | |
757 | ||
758 | ||
2e03ee74 DJ |
759 | /* This function is called when readline has seen a complete line of |
760 | text. */ | |
761 | ||
762 | static void | |
763 | gdb_readline_wrapper_line (char *line) | |
764 | { | |
765 | gdb_assert (!gdb_readline_wrapper_done); | |
766 | gdb_readline_wrapper_result = line; | |
767 | gdb_readline_wrapper_done = 1; | |
768 | ||
769 | /* Prevent operate-and-get-next from acting too early. */ | |
770 | saved_after_char_processing_hook = after_char_processing_hook; | |
771 | after_char_processing_hook = NULL; | |
1b05479a DJ |
772 | |
773 | /* Prevent parts of the prompt from being redisplayed if annotations | |
0017922d | 774 | are enabled, and readline's state getting out of sync. We'll |
d3d4baed PA |
775 | reinstall the callback handler, which puts the terminal in raw |
776 | mode (or in readline lingo, in prepped state), when we're next | |
777 | ready to process user input, either in display_gdb_prompt, or if | |
778 | we're handling an asynchronous target event and running in the | |
779 | background, just before returning to the event loop to process | |
780 | further input (or more target events). */ | |
1b05479a | 781 | if (async_command_editing_p) |
d3d4baed | 782 | gdb_rl_callback_handler_remove (); |
2e03ee74 DJ |
783 | } |
784 | ||
785 | struct gdb_readline_wrapper_cleanup | |
786 | { | |
787 | void (*handler_orig) (char *); | |
2e03ee74 | 788 | int already_prompted_orig; |
93d6eb10 PA |
789 | |
790 | /* Whether the target was async. */ | |
791 | int target_is_async_orig; | |
2e03ee74 DJ |
792 | }; |
793 | ||
794 | static void | |
795 | gdb_readline_wrapper_cleanup (void *arg) | |
796 | { | |
19ba03f4 SM |
797 | struct gdb_readline_wrapper_cleanup *cleanup |
798 | = (struct gdb_readline_wrapper_cleanup *) arg; | |
2e03ee74 | 799 | |
2e03ee74 | 800 | rl_already_prompted = cleanup->already_prompted_orig; |
2e03ee74 DJ |
801 | |
802 | gdb_assert (input_handler == gdb_readline_wrapper_line); | |
803 | input_handler = cleanup->handler_orig; | |
0017922d | 804 | |
d3d4baed PA |
805 | /* Don't restore our input handler in readline yet. That would make |
806 | readline prep the terminal (putting it in raw mode), while the | |
807 | line we just read may trigger execution of a command that expects | |
808 | the terminal in the default cooked/canonical mode, such as e.g., | |
809 | running Python's interactive online help utility. See | |
810 | gdb_readline_wrapper_line for when we'll reinstall it. */ | |
0017922d | 811 | |
2e03ee74 DJ |
812 | gdb_readline_wrapper_result = NULL; |
813 | gdb_readline_wrapper_done = 0; | |
948578a9 PP |
814 | gdb_secondary_prompt_depth--; |
815 | gdb_assert (gdb_secondary_prompt_depth >= 0); | |
2e03ee74 DJ |
816 | |
817 | after_char_processing_hook = saved_after_char_processing_hook; | |
818 | saved_after_char_processing_hook = NULL; | |
819 | ||
93d6eb10 | 820 | if (cleanup->target_is_async_orig) |
6a3753b3 | 821 | target_async (1); |
93d6eb10 | 822 | |
2e03ee74 DJ |
823 | xfree (cleanup); |
824 | } | |
825 | ||
b4f5539f | 826 | char * |
38bcc89d | 827 | gdb_readline_wrapper (const char *prompt) |
b4f5539f | 828 | { |
2e03ee74 DJ |
829 | struct cleanup *back_to; |
830 | struct gdb_readline_wrapper_cleanup *cleanup; | |
831 | char *retval; | |
832 | ||
8d749320 | 833 | cleanup = XNEW (struct gdb_readline_wrapper_cleanup); |
2e03ee74 DJ |
834 | cleanup->handler_orig = input_handler; |
835 | input_handler = gdb_readline_wrapper_line; | |
836 | ||
2e03ee74 DJ |
837 | cleanup->already_prompted_orig = rl_already_prompted; |
838 | ||
93d6eb10 PA |
839 | cleanup->target_is_async_orig = target_is_async_p (); |
840 | ||
948578a9 | 841 | gdb_secondary_prompt_depth++; |
2e03ee74 DJ |
842 | back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup); |
843 | ||
93d6eb10 | 844 | if (cleanup->target_is_async_orig) |
6a3753b3 | 845 | target_async (0); |
93d6eb10 | 846 | |
2e03ee74 | 847 | /* Display our prompt and prevent double prompt display. */ |
1b05479a | 848 | display_gdb_prompt (prompt); |
2e03ee74 DJ |
849 | rl_already_prompted = 1; |
850 | ||
362646f5 | 851 | if (after_char_processing_hook) |
2e03ee74 DJ |
852 | (*after_char_processing_hook) (); |
853 | gdb_assert (after_char_processing_hook == NULL); | |
854 | ||
e0dd0826 | 855 | while (gdb_do_one_event () >= 0) |
2e03ee74 DJ |
856 | if (gdb_readline_wrapper_done) |
857 | break; | |
b4f5539f | 858 | |
2e03ee74 DJ |
859 | retval = gdb_readline_wrapper_result; |
860 | do_cleanups (back_to); | |
861 | return retval; | |
b4f5539f TT |
862 | } |
863 | ||
9e0b60a8 | 864 | \f |
467d8519 TT |
865 | /* The current saved history number from operate-and-get-next. |
866 | This is -1 if not valid. */ | |
867 | static int operate_saved_history = -1; | |
868 | ||
869 | /* This is put on the appropriate hook and helps operate-and-get-next | |
870 | do its work. */ | |
b9362cc7 | 871 | static void |
5ae5f592 | 872 | gdb_rl_operate_and_get_next_completion (void) |
467d8519 TT |
873 | { |
874 | int delta = where_history () - operate_saved_history; | |
5d502164 | 875 | |
467d8519 TT |
876 | /* The `key' argument to rl_get_previous_history is ignored. */ |
877 | rl_get_previous_history (delta, 0); | |
878 | operate_saved_history = -1; | |
879 | ||
880 | /* readline doesn't automatically update the display for us. */ | |
12f4afab | 881 | rl_redisplay (); |
467d8519 TT |
882 | |
883 | after_char_processing_hook = NULL; | |
884 | rl_pre_input_hook = NULL; | |
885 | } | |
886 | ||
887 | /* This is a gdb-local readline command handler. It accepts the | |
888 | current command line (like RET does) and, if this command was taken | |
889 | from the history, arranges for the next command in the history to | |
890 | appear on the command line when the prompt returns. | |
891 | We ignore the arguments. */ | |
892 | static int | |
893 | gdb_rl_operate_and_get_next (int count, int key) | |
894 | { | |
b5686e99 MK |
895 | int where; |
896 | ||
362646f5 AC |
897 | /* Use the async hook. */ |
898 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
467d8519 | 899 | |
b5686e99 MK |
900 | /* Find the current line, and find the next line to use. */ |
901 | where = where_history(); | |
902 | ||
1fb2e2b5 PA |
903 | if ((history_is_stifled () && (history_length >= history_max_entries)) |
904 | || (where >= history_length - 1)) | |
b5686e99 MK |
905 | operate_saved_history = where; |
906 | else | |
907 | operate_saved_history = where + 1; | |
908 | ||
467d8519 TT |
909 | return rl_newline (1, key); |
910 | } | |
08b13bdd PP |
911 | |
912 | /* Number of user commands executed during this session. */ | |
913 | ||
914 | static int command_count = 0; | |
915 | ||
916 | /* Add the user command COMMAND to the input history list. */ | |
917 | ||
918 | void | |
919 | gdb_add_history (const char *command) | |
920 | { | |
08b13bdd | 921 | command_count++; |
fc637f04 PP |
922 | |
923 | if (history_remove_duplicates != 0) | |
924 | { | |
925 | int lookbehind; | |
926 | int lookbehind_threshold; | |
927 | ||
928 | /* The lookbehind threshold for finding a duplicate history entry is | |
929 | bounded by command_count because we can't meaningfully delete | |
930 | history entries that are already stored in the history file since | |
931 | the history file is appended to. */ | |
932 | if (history_remove_duplicates == -1 | |
933 | || history_remove_duplicates > command_count) | |
934 | lookbehind_threshold = command_count; | |
935 | else | |
936 | lookbehind_threshold = history_remove_duplicates; | |
937 | ||
938 | using_history (); | |
939 | for (lookbehind = 0; lookbehind < lookbehind_threshold; lookbehind++) | |
940 | { | |
941 | HIST_ENTRY *temp = previous_history (); | |
942 | ||
943 | if (temp == NULL) | |
944 | break; | |
945 | ||
946 | if (strcmp (temp->line, command) == 0) | |
947 | { | |
948 | HIST_ENTRY *prev = remove_history (where_history ()); | |
949 | command_count--; | |
950 | free_history_entry (prev); | |
951 | break; | |
952 | } | |
953 | } | |
954 | using_history (); | |
955 | } | |
956 | ||
957 | add_history (command); | |
08b13bdd PP |
958 | } |
959 | ||
960 | /* Safely append new history entries to the history file in a corruption-free | |
961 | way using an intermediate local history file. */ | |
962 | ||
963 | static void | |
964 | gdb_safe_append_history (void) | |
965 | { | |
966 | int ret, saved_errno; | |
967 | char *local_history_filename; | |
968 | struct cleanup *old_chain; | |
969 | ||
970 | local_history_filename | |
971 | = xstrprintf ("%s-gdb%d~", history_filename, getpid ()); | |
972 | old_chain = make_cleanup (xfree, local_history_filename); | |
973 | ||
974 | ret = rename (history_filename, local_history_filename); | |
975 | saved_errno = errno; | |
976 | if (ret < 0 && saved_errno != ENOENT) | |
977 | { | |
978 | warning (_("Could not rename %s to %s: %s"), | |
979 | history_filename, local_history_filename, | |
980 | safe_strerror (saved_errno)); | |
981 | } | |
982 | else | |
983 | { | |
984 | if (ret < 0) | |
985 | { | |
986 | /* If the rename failed with ENOENT then either the global history | |
987 | file never existed in the first place or another GDB process is | |
988 | currently appending to it (and has thus temporarily renamed it). | |
989 | Since we can't distinguish between these two cases, we have to | |
990 | conservatively assume the first case and therefore must write out | |
991 | (not append) our known history to our local history file and try | |
992 | to move it back anyway. Otherwise a global history file would | |
993 | never get created! */ | |
994 | gdb_assert (saved_errno == ENOENT); | |
995 | write_history (local_history_filename); | |
996 | } | |
997 | else | |
998 | { | |
999 | append_history (command_count, local_history_filename); | |
2093d2d3 PP |
1000 | if (history_is_stifled ()) |
1001 | history_truncate_file (local_history_filename, history_max_entries); | |
08b13bdd PP |
1002 | } |
1003 | ||
1004 | ret = rename (local_history_filename, history_filename); | |
1005 | saved_errno = errno; | |
1006 | if (ret < 0 && saved_errno != EEXIST) | |
1007 | warning (_("Could not rename %s to %s: %s"), | |
1008 | local_history_filename, history_filename, | |
1009 | safe_strerror (saved_errno)); | |
1010 | } | |
1011 | ||
1012 | do_cleanups (old_chain); | |
1013 | } | |
1014 | ||
b69d38af PA |
1015 | /* Read one line from the command input stream `instream' into a local |
1016 | static buffer. The buffer is made bigger as necessary. Returns | |
1017 | the address of the start of the line. | |
9e0b60a8 | 1018 | |
d318976c | 1019 | NULL is returned for end of file. |
9e0b60a8 | 1020 | |
b69d38af PA |
1021 | *If* the instream == stdin & stdin is a terminal, the line read is |
1022 | copied into the global 'saved_command_line' so that it can be | |
1023 | repeated. | |
9e0b60a8 | 1024 | |
b69d38af PA |
1025 | This routine either uses fancy command line editing or simple input |
1026 | as the user has requested. */ | |
10689f25 | 1027 | |
d318976c | 1028 | char * |
38bcc89d | 1029 | command_line_input (const char *prompt_arg, int repeat, char *annotation_suffix) |
9e0b60a8 | 1030 | { |
b69d38af PA |
1031 | static struct buffer cmd_line_buffer; |
1032 | static int cmd_line_buffer_initialized; | |
38bcc89d | 1033 | const char *prompt = prompt_arg; |
b69d38af | 1034 | char *cmd; |
d318976c FN |
1035 | |
1036 | /* The annotation suffix must be non-NULL. */ | |
1037 | if (annotation_suffix == NULL) | |
1038 | annotation_suffix = ""; | |
9e0b60a8 | 1039 | |
d318976c FN |
1040 | if (annotation_level > 1 && instream == stdin) |
1041 | { | |
38bcc89d SM |
1042 | char *local_prompt; |
1043 | ||
224c3ddb SM |
1044 | local_prompt |
1045 | = (char *) alloca ((prompt == NULL ? 0 : strlen (prompt)) | |
1046 | + strlen (annotation_suffix) + 40); | |
38bcc89d | 1047 | if (prompt == NULL) |
d318976c FN |
1048 | local_prompt[0] = '\0'; |
1049 | else | |
38bcc89d | 1050 | strcpy (local_prompt, prompt); |
d318976c FN |
1051 | strcat (local_prompt, "\n\032\032"); |
1052 | strcat (local_prompt, annotation_suffix); | |
1053 | strcat (local_prompt, "\n"); | |
38bcc89d SM |
1054 | |
1055 | prompt = local_prompt; | |
d318976c | 1056 | } |
9e0b60a8 | 1057 | |
b69d38af | 1058 | if (!cmd_line_buffer_initialized) |
9e0b60a8 | 1059 | { |
b69d38af PA |
1060 | buffer_init (&cmd_line_buffer); |
1061 | cmd_line_buffer_initialized = 1; | |
9e0b60a8 | 1062 | } |
9e0b60a8 | 1063 | |
b69d38af PA |
1064 | /* Starting a new command line. */ |
1065 | cmd_line_buffer.used_size = 0; | |
9e0b60a8 | 1066 | |
d318976c FN |
1067 | #ifdef STOP_SIGNAL |
1068 | if (job_control) | |
362646f5 | 1069 | signal (STOP_SIGNAL, handle_stop_sig); |
d318976c FN |
1070 | #endif |
1071 | ||
1072 | while (1) | |
9e0b60a8 | 1073 | { |
b69d38af PA |
1074 | char *rl; |
1075 | ||
371d5dec MS |
1076 | /* Make sure that all output has been output. Some machines may |
1077 | let you get away with leaving out some of the gdb_flush, but | |
1078 | not all. */ | |
d318976c FN |
1079 | wrap_here (""); |
1080 | gdb_flush (gdb_stdout); | |
1081 | gdb_flush (gdb_stderr); | |
1082 | ||
1083 | if (source_file_name != NULL) | |
637537d0 | 1084 | ++source_line_number; |
d318976c FN |
1085 | |
1086 | if (annotation_level > 1 && instream == stdin) | |
1087 | { | |
306d9ac5 DC |
1088 | puts_unfiltered ("\n\032\032pre-"); |
1089 | puts_unfiltered (annotation_suffix); | |
1090 | puts_unfiltered ("\n"); | |
d318976c FN |
1091 | } |
1092 | ||
1093 | /* Don't use fancy stuff if not talking to stdin. */ | |
698ba934 | 1094 | if (deprecated_readline_hook && input_from_terminal_p ()) |
d318976c | 1095 | { |
38bcc89d | 1096 | rl = (*deprecated_readline_hook) (prompt); |
d318976c | 1097 | } |
698ba934 | 1098 | else if (command_editing_p && input_from_terminal_p ()) |
d318976c | 1099 | { |
38bcc89d | 1100 | rl = gdb_readline_wrapper (prompt); |
d318976c | 1101 | } |
9e0b60a8 | 1102 | else |
d318976c | 1103 | { |
c5c136ea | 1104 | rl = gdb_readline_no_editing (prompt); |
d318976c | 1105 | } |
9e0b60a8 | 1106 | |
b69d38af PA |
1107 | cmd = handle_line_of_input (&cmd_line_buffer, rl, |
1108 | repeat, annotation_suffix); | |
1109 | if (cmd == (char *) EOF) | |
d318976c | 1110 | { |
b69d38af | 1111 | cmd = NULL; |
d318976c | 1112 | break; |
9e0b60a8 | 1113 | } |
b69d38af | 1114 | if (cmd != NULL) |
d318976c | 1115 | break; |
9e0b60a8 | 1116 | |
38bcc89d | 1117 | prompt = NULL; |
d318976c | 1118 | } |
9e0b60a8 | 1119 | |
d318976c FN |
1120 | #ifdef STOP_SIGNAL |
1121 | if (job_control) | |
1122 | signal (STOP_SIGNAL, SIG_DFL); | |
1123 | #endif | |
9e0b60a8 | 1124 | |
b69d38af | 1125 | return cmd; |
9e0b60a8 JM |
1126 | } |
1127 | \f | |
371d5dec | 1128 | /* Print the GDB banner. */ |
9e0b60a8 | 1129 | void |
fba45db2 | 1130 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1131 | { |
1132 | /* From GNU coding standards, first line is meant to be easy for a | |
1133 | program to parse, and is just canonical program name and version | |
371d5dec | 1134 | number, which starts after last space. */ |
9e0b60a8 | 1135 | |
c16158bc | 1136 | fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version); |
9e0b60a8 | 1137 | |
371d5dec | 1138 | /* Second line is a copyright notice. */ |
9e0b60a8 | 1139 | |
3e43a32a | 1140 | fprintf_filtered (stream, |
edd88788 | 1141 | "Copyright (C) 2016 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1142 | |
1143 | /* Following the copyright is a brief statement that the program is | |
1144 | free software, that users are free to copy and change it on | |
1145 | certain conditions, that it is covered by the GNU GPL, and that | |
371d5dec | 1146 | there is no warranty. */ |
9e0b60a8 JM |
1147 | |
1148 | fprintf_filtered (stream, "\ | |
3e43a32a MS |
1149 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\ |
1150 | \nThis is free software: you are free to change and redistribute it.\n\ | |
0b93d57c | 1151 | There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\ |
b8533aec | 1152 | and \"show warranty\" for details.\n"); |
9e0b60a8 | 1153 | |
371d5dec | 1154 | /* After the required info we print the configuration information. */ |
9e0b60a8 JM |
1155 | |
1156 | fprintf_filtered (stream, "This GDB was configured as \""); | |
6314a349 | 1157 | if (strcmp (host_name, target_name) != 0) |
9e0b60a8 | 1158 | { |
3e43a32a MS |
1159 | fprintf_filtered (stream, "--host=%s --target=%s", |
1160 | host_name, target_name); | |
9e0b60a8 JM |
1161 | } |
1162 | else | |
1163 | { | |
1164 | fprintf_filtered (stream, "%s", host_name); | |
1165 | } | |
6eaaf48b EZ |
1166 | fprintf_filtered (stream, "\".\n\ |
1167 | Type \"show configuration\" for configuration details."); | |
c16158bc JM |
1168 | |
1169 | if (REPORT_BUGS_TO[0]) | |
1170 | { | |
6eaaf48b | 1171 | fprintf_filtered (stream, |
c16158bc | 1172 | _("\nFor bug reporting instructions, please see:\n")); |
1cf55f60 | 1173 | fprintf_filtered (stream, "%s.\n", REPORT_BUGS_TO); |
c16158bc | 1174 | } |
1cf55f60 PM |
1175 | fprintf_filtered (stream, |
1176 | _("Find the GDB manual and other documentation \ | |
1177 | resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n")); | |
1178 | fprintf_filtered (stream, _("For help, type \"help\".\n")); | |
1179 | fprintf_filtered (stream, _("Type \"apropos word\" to search for \ | |
af4c453a | 1180 | commands related to \"word\".")); |
9e0b60a8 | 1181 | } |
6eaaf48b EZ |
1182 | |
1183 | /* Print the details of GDB build-time configuration. */ | |
1184 | void | |
1185 | print_gdb_configuration (struct ui_file *stream) | |
1186 | { | |
1187 | fprintf_filtered (stream, _("\ | |
1188 | This GDB was configured as follows:\n\ | |
1189 | configure --host=%s --target=%s\n\ | |
1190 | "), host_name, target_name); | |
1191 | fprintf_filtered (stream, _("\ | |
1192 | --with-auto-load-dir=%s\n\ | |
1193 | --with-auto-load-safe-path=%s\n\ | |
1194 | "), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH); | |
1195 | #if HAVE_LIBEXPAT | |
1196 | fprintf_filtered (stream, _("\ | |
1197 | --with-expat\n\ | |
1198 | ")); | |
1199 | #else | |
1200 | fprintf_filtered (stream, _("\ | |
1201 | --without-expat\n\ | |
1202 | ")); | |
1203 | #endif | |
1204 | if (GDB_DATADIR[0]) | |
1205 | fprintf_filtered (stream, _("\ | |
1206 | --with-gdb-datadir=%s%s\n\ | |
1207 | "), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : ""); | |
1208 | #ifdef ICONV_BIN | |
1209 | fprintf_filtered (stream, _("\ | |
1210 | --with-iconv-bin=%s%s\n\ | |
1211 | "), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : ""); | |
1212 | #endif | |
1213 | if (JIT_READER_DIR[0]) | |
1214 | fprintf_filtered (stream, _("\ | |
1215 | --with-jit-reader-dir=%s%s\n\ | |
1216 | "), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : ""); | |
1217 | #if HAVE_LIBUNWIND_IA64_H | |
1218 | fprintf_filtered (stream, _("\ | |
1219 | --with-libunwind-ia64\n\ | |
1220 | ")); | |
1221 | #else | |
1222 | fprintf_filtered (stream, _("\ | |
1223 | --without-libunwind-ia64\n\ | |
1224 | ")); | |
1225 | #endif | |
1226 | #if HAVE_LIBLZMA | |
1227 | fprintf_filtered (stream, _("\ | |
1228 | --with-lzma\n\ | |
1229 | ")); | |
1230 | #else | |
1231 | fprintf_filtered (stream, _("\ | |
1232 | --without-lzma\n\ | |
1233 | ")); | |
1234 | #endif | |
1235 | #ifdef WITH_PYTHON_PATH | |
1236 | fprintf_filtered (stream, _("\ | |
1237 | --with-python=%s%s\n\ | |
1238 | "), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : ""); | |
1239 | #endif | |
97d66cc6 EZ |
1240 | #if HAVE_GUILE |
1241 | fprintf_filtered (stream, _("\ | |
1242 | --with-guile\n\ | |
1243 | ")); | |
1244 | #else | |
1245 | fprintf_filtered (stream, _("\ | |
1246 | --without-guile\n\ | |
1247 | ")); | |
1248 | #endif | |
6eaaf48b EZ |
1249 | #ifdef RELOC_SRCDIR |
1250 | fprintf_filtered (stream, _("\ | |
1251 | --with-relocated-sources=%s\n\ | |
1252 | "), RELOC_SRCDIR); | |
1253 | #endif | |
1254 | if (DEBUGDIR[0]) | |
1255 | fprintf_filtered (stream, _("\ | |
1256 | --with-separate-debug-dir=%s%s\n\ | |
1257 | "), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : ""); | |
1258 | if (TARGET_SYSTEM_ROOT[0]) | |
1259 | fprintf_filtered (stream, _("\ | |
1260 | --with-sysroot=%s%s\n\ | |
1261 | "), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : ""); | |
1262 | if (SYSTEM_GDBINIT[0]) | |
1263 | fprintf_filtered (stream, _("\ | |
1264 | --with-system-gdbinit=%s%s\n\ | |
1265 | "), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : ""); | |
ab116149 YQ |
1266 | #if HAVE_LIBBABELTRACE |
1267 | fprintf_filtered (stream, _("\ | |
1268 | --with-babeltrace\n\ | |
1269 | ")); | |
1270 | #else | |
1271 | fprintf_filtered (stream, _("\ | |
1272 | --without-babeltrace\n\ | |
1273 | ")); | |
1274 | #endif | |
48d1d6f5 EZ |
1275 | /* We assume "relocatable" will be printed at least once, thus we always |
1276 | print this text. It's a reasonably safe assumption for now. */ | |
1277 | fprintf_filtered (stream, _("\n\ | |
1278 | (\"Relocatable\" means the directory can be moved with the GDB installation\n\ | |
1279 | tree, and GDB will still find it.)\n\ | |
1280 | ")); | |
6eaaf48b | 1281 | } |
9e0b60a8 | 1282 | \f |
95298e72 | 1283 | |
ab821bc6 PA |
1284 | /* The current top level prompt, settable with "set prompt", and/or |
1285 | with the python `gdb.prompt_hook' hook. */ | |
1286 | static char *top_prompt; | |
9e0b60a8 | 1287 | |
ab821bc6 | 1288 | /* Access method for the GDB prompt string. */ |
95298e72 PM |
1289 | |
1290 | char * | |
ab821bc6 | 1291 | get_prompt (void) |
95298e72 | 1292 | { |
ab821bc6 | 1293 | return top_prompt; |
95298e72 PM |
1294 | } |
1295 | ||
ab821bc6 | 1296 | /* Set method for the GDB prompt string. */ |
95298e72 PM |
1297 | |
1298 | void | |
ab821bc6 | 1299 | set_prompt (const char *s) |
95298e72 | 1300 | { |
ab821bc6 | 1301 | char *p = xstrdup (s); |
95298e72 | 1302 | |
ab821bc6 PA |
1303 | xfree (top_prompt); |
1304 | top_prompt = p; | |
9e0b60a8 | 1305 | } |
9e0b60a8 | 1306 | \f |
c5aa993b | 1307 | |
b0abbc58 | 1308 | struct qt_args |
9e0b60a8 | 1309 | { |
b0abbc58 JJ |
1310 | char *args; |
1311 | int from_tty; | |
1312 | }; | |
9e0b60a8 | 1313 | |
54a012c9 PA |
1314 | /* Callback for iterate_over_inferiors. Kills or detaches the given |
1315 | inferior, depending on how we originally gained control of it. */ | |
1316 | ||
1317 | static int | |
1318 | kill_or_detach (struct inferior *inf, void *args) | |
1319 | { | |
19ba03f4 | 1320 | struct qt_args *qt = (struct qt_args *) args; |
54a012c9 PA |
1321 | struct thread_info *thread; |
1322 | ||
6c95b8df PA |
1323 | if (inf->pid == 0) |
1324 | return 0; | |
1325 | ||
b8fa0bfa PA |
1326 | thread = any_thread_of_process (inf->pid); |
1327 | if (thread != NULL) | |
9e0b60a8 | 1328 | { |
54a012c9 | 1329 | switch_to_thread (thread->ptid); |
c35b1492 PA |
1330 | |
1331 | /* Leave core files alone. */ | |
1332 | if (target_has_execution) | |
1333 | { | |
1334 | if (inf->attach_flag) | |
1335 | target_detach (qt->args, qt->from_tty); | |
1336 | else | |
1337 | target_kill (); | |
1338 | } | |
9e0b60a8 JM |
1339 | } |
1340 | ||
54a012c9 PA |
1341 | return 0; |
1342 | } | |
1343 | ||
b8fa0bfa PA |
1344 | /* Callback for iterate_over_inferiors. Prints info about what GDB |
1345 | will do to each inferior on a "quit". ARG points to a struct | |
1346 | ui_out where output is to be collected. */ | |
1347 | ||
1348 | static int | |
1349 | print_inferior_quit_action (struct inferior *inf, void *arg) | |
1350 | { | |
19ba03f4 | 1351 | struct ui_file *stb = (struct ui_file *) arg; |
b8fa0bfa | 1352 | |
6c95b8df PA |
1353 | if (inf->pid == 0) |
1354 | return 0; | |
1355 | ||
b8fa0bfa PA |
1356 | if (inf->attach_flag) |
1357 | fprintf_filtered (stb, | |
1358 | _("\tInferior %d [%s] will be detached.\n"), inf->num, | |
1359 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1360 | else | |
1361 | fprintf_filtered (stb, | |
1362 | _("\tInferior %d [%s] will be killed.\n"), inf->num, | |
1363 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | /* If necessary, make the user confirm that we should quit. Return | |
1369 | non-zero if we should quit, zero if we shouldn't. */ | |
1370 | ||
1371 | int | |
1372 | quit_confirm (void) | |
1373 | { | |
1374 | struct ui_file *stb; | |
1375 | struct cleanup *old_chain; | |
1376 | char *str; | |
1377 | int qr; | |
1378 | ||
1379 | /* Don't even ask if we're only debugging a core file inferior. */ | |
1380 | if (!have_live_inferiors ()) | |
1381 | return 1; | |
1382 | ||
1383 | /* Build the query string as a single string. */ | |
1384 | stb = mem_fileopen (); | |
1385 | old_chain = make_cleanup_ui_file_delete (stb); | |
1386 | ||
5a5d8ead AB |
1387 | fprintf_filtered (stb, _("A debugging session is active.\n\n")); |
1388 | iterate_over_inferiors (print_inferior_quit_action, stb); | |
1389 | fprintf_filtered (stb, _("\nQuit anyway? ")); | |
b8fa0bfa PA |
1390 | |
1391 | str = ui_file_xstrdup (stb, NULL); | |
1392 | make_cleanup (xfree, str); | |
1393 | ||
1394 | qr = query ("%s", str); | |
1395 | do_cleanups (old_chain); | |
1396 | return qr; | |
1397 | } | |
1398 | ||
18206ca3 PP |
1399 | /* Prepare to exit GDB cleanly by undoing any changes made to the |
1400 | terminal so that we leave the terminal in the state we acquired it. */ | |
1401 | ||
1402 | static void | |
1403 | undo_terminal_modifications_before_exit (void) | |
1404 | { | |
1405 | target_terminal_ours (); | |
1406 | #if defined(TUI) | |
1407 | tui_disable (); | |
1408 | #endif | |
1409 | if (async_command_editing_p) | |
1410 | gdb_disable_readline (); | |
1411 | } | |
1412 | ||
1413 | ||
b0abbc58 JJ |
1414 | /* Quit without asking for confirmation. */ |
1415 | ||
1416 | void | |
1417 | quit_force (char *args, int from_tty) | |
1418 | { | |
1419 | int exit_code = 0; | |
365c70b1 | 1420 | struct qt_args qt; |
b0abbc58 | 1421 | |
18206ca3 PP |
1422 | undo_terminal_modifications_before_exit (); |
1423 | ||
b0abbc58 | 1424 | /* An optional expression may be used to cause gdb to terminate with the |
371d5dec | 1425 | value of that expression. */ |
b0abbc58 JJ |
1426 | if (args) |
1427 | { | |
1428 | struct value *val = parse_and_eval (args); | |
1429 | ||
1430 | exit_code = (int) value_as_long (val); | |
1431 | } | |
4b0ad762 AS |
1432 | else if (return_child_result) |
1433 | exit_code = return_child_result_value; | |
b0abbc58 | 1434 | |
365c70b1 JJ |
1435 | qt.args = args; |
1436 | qt.from_tty = from_tty; | |
1437 | ||
b0abbc58 | 1438 | /* We want to handle any quit errors and exit regardless. */ |
2f9d54cf PA |
1439 | |
1440 | /* Get out of tfind mode, and kill or detach all inferiors. */ | |
492d29ea | 1441 | TRY |
2f9d54cf PA |
1442 | { |
1443 | disconnect_tracing (); | |
1444 | iterate_over_inferiors (kill_or_detach, &qt); | |
1445 | } | |
492d29ea PA |
1446 | CATCH (ex, RETURN_MASK_ALL) |
1447 | { | |
1448 | exception_print (gdb_stderr, ex); | |
1449 | } | |
1450 | END_CATCH | |
2f9d54cf PA |
1451 | |
1452 | /* Give all pushed targets a chance to do minimal cleanup, and pop | |
1453 | them all out. */ | |
492d29ea | 1454 | TRY |
2f9d54cf PA |
1455 | { |
1456 | pop_all_targets (); | |
1457 | } | |
492d29ea PA |
1458 | CATCH (ex, RETURN_MASK_ALL) |
1459 | { | |
1460 | exception_print (gdb_stderr, ex); | |
1461 | } | |
1462 | END_CATCH | |
2f9d54cf PA |
1463 | |
1464 | /* Save the history information if it is appropriate to do so. */ | |
492d29ea | 1465 | TRY |
2f9d54cf | 1466 | { |
35ab155d MB |
1467 | if (write_history_p && history_filename |
1468 | && input_from_terminal_p ()) | |
08b13bdd | 1469 | gdb_safe_append_history (); |
2f9d54cf | 1470 | } |
492d29ea PA |
1471 | CATCH (ex, RETURN_MASK_ALL) |
1472 | { | |
1473 | exception_print (gdb_stderr, ex); | |
1474 | } | |
1475 | END_CATCH | |
2f9d54cf PA |
1476 | |
1477 | /* Do any final cleanups before exiting. */ | |
492d29ea | 1478 | TRY |
2f9d54cf PA |
1479 | { |
1480 | do_final_cleanups (all_cleanups ()); | |
1481 | } | |
492d29ea PA |
1482 | CATCH (ex, RETURN_MASK_ALL) |
1483 | { | |
1484 | exception_print (gdb_stderr, ex); | |
1485 | } | |
1486 | END_CATCH | |
b0abbc58 | 1487 | |
9e0b60a8 JM |
1488 | exit (exit_code); |
1489 | } | |
1490 | ||
698ba934 DJ |
1491 | /* Returns whether GDB is running on a terminal and input is |
1492 | currently coming from that terminal. */ | |
9e0b60a8 JM |
1493 | |
1494 | int | |
fba45db2 | 1495 | input_from_terminal_p (void) |
9e0b60a8 | 1496 | { |
c63a1f86 JK |
1497 | if (batch_flag) |
1498 | return 0; | |
1499 | ||
698ba934 DJ |
1500 | if (gdb_has_a_terminal () && instream == stdin) |
1501 | return 1; | |
1502 | ||
1503 | /* If INSTREAM is unset, and we are not in a user command, we | |
1504 | must be in Insight. That's like having a terminal, for our | |
1505 | purposes. */ | |
1506 | if (instream == NULL && !in_user_command) | |
1507 | return 1; | |
1508 | ||
1509 | return 0; | |
9e0b60a8 JM |
1510 | } |
1511 | \f | |
9e0b60a8 | 1512 | static void |
fba45db2 | 1513 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1514 | { |
dc7eb48e PA |
1515 | /* Can't call dont_repeat here because we're not necessarily reading |
1516 | from stdin. */ | |
1517 | *saved_command_line = 0; | |
9e0b60a8 JM |
1518 | } |
1519 | \f | |
1520 | /* Functions to manipulate command line editing control variables. */ | |
1521 | ||
1522 | /* Number of commands to print in each call to show_commands. */ | |
1523 | #define Hist_print 10 | |
d318976c | 1524 | void |
fba45db2 | 1525 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1526 | { |
1527 | /* Index for history commands. Relative to history_base. */ | |
1528 | int offset; | |
1529 | ||
1530 | /* Number of the history entry which we are planning to display next. | |
1531 | Relative to history_base. */ | |
1532 | static int num = 0; | |
1533 | ||
9e0b60a8 | 1534 | /* Print out some of the commands from the command history. */ |
9e0b60a8 JM |
1535 | |
1536 | if (args) | |
1537 | { | |
1538 | if (args[0] == '+' && args[1] == '\0') | |
1539 | /* "info editing +" should print from the stored position. */ | |
1540 | ; | |
1541 | else | |
1542 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1543 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1544 | } |
1545 | /* "show commands" means print the last Hist_print commands. */ | |
1546 | else | |
1547 | { | |
840a9a1f | 1548 | num = history_length - Hist_print; |
9e0b60a8 JM |
1549 | } |
1550 | ||
1551 | if (num < 0) | |
1552 | num = 0; | |
1553 | ||
1554 | /* If there are at least Hist_print commands, we want to display the last | |
1555 | Hist_print rather than, say, the last 6. */ | |
840a9a1f | 1556 | if (history_length - num < Hist_print) |
9e0b60a8 | 1557 | { |
840a9a1f | 1558 | num = history_length - Hist_print; |
9e0b60a8 JM |
1559 | if (num < 0) |
1560 | num = 0; | |
1561 | } | |
1562 | ||
840a9a1f PA |
1563 | for (offset = num; |
1564 | offset < num + Hist_print && offset < history_length; | |
1565 | offset++) | |
9e0b60a8 JM |
1566 | { |
1567 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1568 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1569 | } |
1570 | ||
1571 | /* The next command we want to display is the next one that we haven't | |
1572 | displayed yet. */ | |
1573 | num += Hist_print; | |
1574 | ||
1575 | /* If the user repeats this command with return, it should do what | |
1576 | "show commands +" does. This is unnecessary if arg is null, | |
1577 | because "show commands +" is not useful after "show commands". */ | |
1578 | if (from_tty && args) | |
1579 | { | |
1580 | args[0] = '+'; | |
1581 | args[1] = '\0'; | |
1582 | } | |
1583 | } | |
1584 | ||
ebfd00d2 | 1585 | /* Update the size of our command history file to HISTORY_SIZE. |
840a9a1f | 1586 | |
ebfd00d2 | 1587 | A HISTORY_SIZE of -1 stands for unlimited. */ |
840a9a1f | 1588 | |
ebfd00d2 PP |
1589 | static void |
1590 | set_readline_history_size (int history_size) | |
1591 | { | |
1592 | gdb_assert (history_size >= -1); | |
840a9a1f | 1593 | |
ebfd00d2 | 1594 | if (history_size == -1) |
840a9a1f | 1595 | unstifle_history (); |
883b9c6c | 1596 | else |
ebfd00d2 PP |
1597 | stifle_history (history_size); |
1598 | } | |
1599 | ||
1600 | /* Called by do_setshow_command. */ | |
1601 | static void | |
1602 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) | |
1603 | { | |
1604 | set_readline_history_size (history_size_setshow_var); | |
9e0b60a8 JM |
1605 | } |
1606 | ||
d318976c | 1607 | void |
fba45db2 | 1608 | set_history (char *args, int from_tty) |
9e0b60a8 | 1609 | { |
3e43a32a MS |
1610 | printf_unfiltered (_("\"set history\" must be followed " |
1611 | "by the name of a history subcommand.\n")); | |
635c7e8a | 1612 | help_list (sethistlist, "set history ", all_commands, gdb_stdout); |
9e0b60a8 JM |
1613 | } |
1614 | ||
d318976c | 1615 | void |
fba45db2 | 1616 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1617 | { |
1618 | cmd_show_list (showhistlist, from_tty, ""); | |
1619 | } | |
1620 | ||
371d5dec | 1621 | int info_verbose = 0; /* Default verbose msgs off. */ |
9e0b60a8 JM |
1622 | |
1623 | /* Called by do_setshow_command. An elaborate joke. */ | |
d318976c | 1624 | void |
fba45db2 | 1625 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1626 | { |
6f937416 | 1627 | const char *cmdname = "verbose"; |
9e0b60a8 JM |
1628 | struct cmd_list_element *showcmd; |
1629 | ||
1630 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1427fe5e | 1631 | gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS); |
9e0b60a8 JM |
1632 | |
1633 | if (info_verbose) | |
1634 | { | |
1635 | c->doc = "Set verbose printing of informational messages."; | |
1636 | showcmd->doc = "Show verbose printing of informational messages."; | |
1637 | } | |
1638 | else | |
1639 | { | |
1640 | c->doc = "Set verbosity."; | |
1641 | showcmd->doc = "Show verbosity."; | |
1642 | } | |
1643 | } | |
1644 | ||
9e0b60a8 | 1645 | /* Init the history buffer. Note that we are called after the init file(s) |
371d5dec MS |
1646 | have been read so that the user can change the history file via his |
1647 | .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1648 | overrides all of this. */ | |
9e0b60a8 JM |
1649 | |
1650 | void | |
fba45db2 | 1651 | init_history (void) |
9e0b60a8 JM |
1652 | { |
1653 | char *tmpenv; | |
1654 | ||
b58c513b | 1655 | tmpenv = getenv ("GDBHISTSIZE"); |
9e0b60a8 | 1656 | if (tmpenv) |
840a9a1f | 1657 | { |
bc460514 | 1658 | long var; |
0fc26caf | 1659 | int saved_errno; |
bc460514 PP |
1660 | char *endptr; |
1661 | ||
1662 | tmpenv = skip_spaces (tmpenv); | |
0fc26caf | 1663 | errno = 0; |
bc460514 | 1664 | var = strtol (tmpenv, &endptr, 10); |
0fc26caf | 1665 | saved_errno = errno; |
bc460514 PP |
1666 | endptr = skip_spaces (endptr); |
1667 | ||
1668 | /* If GDBHISTSIZE is non-numeric then ignore it. If GDBHISTSIZE is the | |
1669 | empty string, a negative number or a huge positive number (larger than | |
1670 | INT_MAX) then set the history size to unlimited. Otherwise set our | |
1671 | history size to the number we have read. This behavior is consistent | |
1672 | with how bash handles HISTSIZE. */ | |
1673 | if (*endptr != '\0') | |
1674 | ; | |
1675 | else if (*tmpenv == '\0' | |
1676 | || var < 0 | |
0fc26caf PP |
1677 | || var > INT_MAX |
1678 | /* On targets where INT_MAX == LONG_MAX, we have to look at | |
1679 | errno after calling strtol to distinguish between a value that | |
1680 | is exactly INT_MAX and an overflowing value that was clamped | |
1681 | to INT_MAX. */ | |
1682 | || (var == INT_MAX && saved_errno == ERANGE)) | |
bc460514 PP |
1683 | history_size_setshow_var = -1; |
1684 | else | |
1685 | history_size_setshow_var = var; | |
840a9a1f | 1686 | } |
bc460514 PP |
1687 | |
1688 | /* If neither the init file nor GDBHISTSIZE has set a size yet, pick the | |
1689 | default. */ | |
1690 | if (history_size_setshow_var == -2) | |
840a9a1f | 1691 | history_size_setshow_var = 256; |
9e0b60a8 | 1692 | |
ebfd00d2 | 1693 | set_readline_history_size (history_size_setshow_var); |
9e0b60a8 JM |
1694 | |
1695 | tmpenv = getenv ("GDBHISTFILE"); | |
1696 | if (tmpenv) | |
1b36a34b | 1697 | history_filename = xstrdup (tmpenv); |
c5aa993b JM |
1698 | else if (!history_filename) |
1699 | { | |
1700 | /* We include the current directory so that if the user changes | |
1701 | directories the file written will be the same as the one | |
1702 | that was read. */ | |
a0b3c4fd | 1703 | #ifdef __MSDOS__ |
eb2f494a | 1704 | /* No leading dots in file names are allowed on MSDOS. */ |
1754f103 MK |
1705 | history_filename = concat (current_directory, "/_gdb_history", |
1706 | (char *)NULL); | |
a0b3c4fd | 1707 | #else |
1754f103 MK |
1708 | history_filename = concat (current_directory, "/.gdb_history", |
1709 | (char *)NULL); | |
a0b3c4fd | 1710 | #endif |
c5aa993b | 1711 | } |
9e0b60a8 JM |
1712 | read_history (history_filename); |
1713 | } | |
1714 | ||
920d2a44 | 1715 | static void |
ab821bc6 PA |
1716 | show_prompt (struct ui_file *file, int from_tty, |
1717 | struct cmd_list_element *c, const char *value) | |
920d2a44 AC |
1718 | { |
1719 | fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value); | |
1720 | } | |
1721 | ||
1722 | static void | |
1723 | show_async_command_editing_p (struct ui_file *file, int from_tty, | |
1724 | struct cmd_list_element *c, const char *value) | |
1725 | { | |
3e43a32a MS |
1726 | fprintf_filtered (file, _("Editing of command lines as " |
1727 | "they are typed is %s.\n"), | |
920d2a44 AC |
1728 | value); |
1729 | } | |
1730 | ||
1731 | static void | |
1732 | show_annotation_level (struct ui_file *file, int from_tty, | |
1733 | struct cmd_list_element *c, const char *value) | |
1734 | { | |
1735 | fprintf_filtered (file, _("Annotation_level is %s.\n"), value); | |
1736 | } | |
1737 | ||
1738 | static void | |
1739 | show_exec_done_display_p (struct ui_file *file, int from_tty, | |
1740 | struct cmd_list_element *c, const char *value) | |
1741 | { | |
3e43a32a MS |
1742 | fprintf_filtered (file, _("Notification of completion for " |
1743 | "asynchronous execution commands is %s.\n"), | |
920d2a44 AC |
1744 | value); |
1745 | } | |
6dea1fbd | 1746 | |
8d551b02 DE |
1747 | /* New values of the "data-directory" parameter are staged here. */ |
1748 | static char *staged_gdb_datadir; | |
1749 | ||
6dea1fbd JK |
1750 | /* "set" command for the gdb_datadir configuration variable. */ |
1751 | ||
1752 | static void | |
1753 | set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c) | |
1754 | { | |
8d551b02 | 1755 | set_gdb_data_directory (staged_gdb_datadir); |
6dea1fbd JK |
1756 | observer_notify_gdb_datadir_changed (); |
1757 | } | |
1758 | ||
8d551b02 DE |
1759 | /* "show" command for the gdb_datadir configuration variable. */ |
1760 | ||
1761 | static void | |
1762 | show_gdb_datadir (struct ui_file *file, int from_tty, | |
1763 | struct cmd_list_element *c, const char *value) | |
1764 | { | |
1765 | fprintf_filtered (file, _("GDB's data directory is \"%s\".\n"), | |
1766 | gdb_datadir); | |
1767 | } | |
1768 | ||
97c85fc6 MB |
1769 | static void |
1770 | set_history_filename (char *args, int from_tty, struct cmd_list_element *c) | |
1771 | { | |
1772 | /* We include the current directory so that if the user changes | |
1773 | directories the file written will be the same as the one | |
1774 | that was read. */ | |
1775 | if (!IS_ABSOLUTE_PATH (history_filename)) | |
1776 | history_filename = reconcat (history_filename, current_directory, "/", | |
1777 | history_filename, (char *) NULL); | |
1778 | } | |
1779 | ||
9e0b60a8 | 1780 | static void |
fba45db2 | 1781 | init_main (void) |
9e0b60a8 | 1782 | { |
ab821bc6 PA |
1783 | /* Initialize the prompt to a simple "(gdb) " prompt or to whatever |
1784 | the DEFAULT_PROMPT is. */ | |
1785 | set_prompt (DEFAULT_PROMPT); | |
1786 | ||
9e0b60a8 JM |
1787 | /* Set the important stuff up for command editing. */ |
1788 | command_editing_p = 1; | |
9e0b60a8 | 1789 | history_expansion_p = 0; |
452a569e | 1790 | write_history_p = 0; |
9e0b60a8 JM |
1791 | |
1792 | /* Setup important stuff for command line editing. */ | |
67c296a2 | 1793 | rl_completion_word_break_hook = gdb_completion_word_break_characters; |
38017ce8 | 1794 | rl_completion_entry_function = readline_line_completion_function; |
51065942 | 1795 | rl_completer_word_break_characters = default_word_break_characters (); |
d318976c | 1796 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); |
82083d6d | 1797 | rl_completion_display_matches_hook = cli_display_match_list; |
9e0b60a8 | 1798 | rl_readline_name = "gdb"; |
7cb3ec5e | 1799 | rl_terminal_name = getenv ("TERM"); |
9e0b60a8 | 1800 | |
467d8519 TT |
1801 | /* The name for this defun comes from Bash, where it originated. |
1802 | 15 is Control-o, the same binding this function has in Bash. */ | |
1803 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1804 | ||
4d28ad1e | 1805 | add_setshow_string_cmd ("prompt", class_support, |
ab821bc6 | 1806 | &top_prompt, |
3e43a32a MS |
1807 | _("Set gdb's prompt"), |
1808 | _("Show gdb's prompt"), | |
ab821bc6 PA |
1809 | NULL, NULL, |
1810 | show_prompt, | |
4d28ad1e | 1811 | &setlist, &showlist); |
9e0b60a8 | 1812 | |
1bedd215 | 1813 | add_com ("dont-repeat", class_support, dont_repeat_command, _("\ |
3e43a32a MS |
1814 | Don't repeat this command.\nPrimarily \ |
1815 | used inside of user-defined commands that should not be repeated when\n\ | |
1bedd215 | 1816 | hitting return.")); |
9e0b60a8 | 1817 | |
5bf193a2 AC |
1818 | add_setshow_boolean_cmd ("editing", class_support, |
1819 | &async_command_editing_p, _("\ | |
1820 | Set editing of command lines as they are typed."), _("\ | |
1821 | Show editing of command lines as they are typed."), _("\ | |
9e0b60a8 JM |
1822 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
1823 | Without an argument, command line editing is enabled. To edit, use\n\ | |
5bf193a2 AC |
1824 | EMACS-like or VI-like commands like control-P or ESC."), |
1825 | set_async_editing_command, | |
920d2a44 | 1826 | show_async_command_editing_p, |
5bf193a2 AC |
1827 | &setlist, &showlist); |
1828 | ||
1829 | add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\ | |
1830 | Set saving of the history record on exit."), _("\ | |
1831 | Show saving of the history record on exit."), _("\ | |
9e0b60a8 | 1832 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
5bf193a2 AC |
1833 | Without an argument, saving is enabled."), |
1834 | NULL, | |
920d2a44 | 1835 | show_write_history_p, |
5bf193a2 | 1836 | &sethistlist, &showhistlist); |
9e0b60a8 | 1837 | |
ebfd00d2 PP |
1838 | add_setshow_zuinteger_unlimited_cmd ("size", no_class, |
1839 | &history_size_setshow_var, _("\ | |
4d28ad1e AC |
1840 | Set the size of the command history,"), _("\ |
1841 | Show the size of the command history,"), _("\ | |
f81d1120 PA |
1842 | ie. the number of previous commands to keep a record of.\n\ |
1843 | If set to \"unlimited\", the number of commands kept in the history\n\ | |
1844 | list is unlimited. This defaults to the value of the environment\n\ | |
b58c513b | 1845 | variable \"GDBHISTSIZE\", or to 256 if this variable is not set."), |
883b9c6c YQ |
1846 | set_history_size_command, |
1847 | show_history_size, | |
1848 | &sethistlist, &showhistlist); | |
4d28ad1e | 1849 | |
fc637f04 PP |
1850 | add_setshow_zuinteger_unlimited_cmd ("remove-duplicates", no_class, |
1851 | &history_remove_duplicates, _("\ | |
1852 | Set how far back in history to look for and remove duplicate entries."), _("\ | |
1853 | Show how far back in history to look for and remove duplicate entries."), _("\ | |
1854 | If set to a nonzero value N, GDB will look back at the last N history entries\n\ | |
1855 | and remove the first history entry that is a duplicate of the most recent\n\ | |
1856 | entry, each time a new history entry is added.\n\ | |
1857 | If set to \"unlimited\", this lookbehind is unbounded.\n\ | |
1858 | Only history entries added during this session are considered for removal.\n\ | |
1859 | If set to 0, removal of duplicate history entries is disabled.\n\ | |
1860 | By default this option is set to 0."), | |
1861 | NULL, | |
1862 | show_history_remove_duplicates, | |
1863 | &sethistlist, &showhistlist); | |
1864 | ||
4d28ad1e AC |
1865 | add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\ |
1866 | Set the filename in which to record the command history"), _("\ | |
1867 | Show the filename in which to record the command history"), _("\ | |
1868 | (the list of previous commands of which a record is kept)."), | |
97c85fc6 | 1869 | set_history_filename, |
920d2a44 | 1870 | show_history_filename, |
4d28ad1e | 1871 | &sethistlist, &showhistlist); |
9e0b60a8 | 1872 | |
e360902b | 1873 | add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\ |
5bf193a2 AC |
1874 | Set whether to confirm potentially dangerous operations."), _("\ |
1875 | Show whether to confirm potentially dangerous operations."), NULL, | |
1876 | NULL, | |
e360902b | 1877 | show_confirm, |
5bf193a2 | 1878 | &setlist, &showlist); |
9e0b60a8 | 1879 | |
85c07804 AC |
1880 | add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\ |
1881 | Set annotation_level."), _("\ | |
1882 | Show annotation_level."), _("\ | |
9e0b60a8 | 1883 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
85c07804 | 1884 | 2 == output annotated suitably for use by programs that control GDB."), |
ab821bc6 | 1885 | NULL, |
920d2a44 | 1886 | show_annotation_level, |
85c07804 | 1887 | &setlist, &showlist); |
362646f5 | 1888 | |
5bf193a2 AC |
1889 | add_setshow_boolean_cmd ("exec-done-display", class_support, |
1890 | &exec_done_display_p, _("\ | |
1891 | Set notification of completion for asynchronous execution commands."), _("\ | |
1892 | Show notification of completion for asynchronous execution commands."), _("\ | |
1893 | Use \"on\" to enable the notification, and \"off\" to disable it."), | |
1894 | NULL, | |
920d2a44 | 1895 | show_exec_done_display_p, |
5bf193a2 | 1896 | &setlist, &showlist); |
b14b1491 TT |
1897 | |
1898 | add_setshow_filename_cmd ("data-directory", class_maintenance, | |
8d551b02 | 1899 | &staged_gdb_datadir, _("Set GDB's data directory."), |
b14b1491 TT |
1900 | _("Show GDB's data directory."), |
1901 | _("\ | |
1902 | When set, GDB uses the specified path to search for data files."), | |
8d551b02 | 1903 | set_gdb_datadir, show_gdb_datadir, |
b14b1491 TT |
1904 | &setlist, |
1905 | &showlist); | |
9e0b60a8 | 1906 | } |
64cdedad EZ |
1907 | |
1908 | void | |
1909 | gdb_init (char *argv0) | |
1910 | { | |
1911 | if (pre_init_ui_hook) | |
1912 | pre_init_ui_hook (); | |
1913 | ||
371d5dec | 1914 | /* Run the init function of each source file. */ |
64cdedad | 1915 | |
64cdedad EZ |
1916 | #ifdef __MSDOS__ |
1917 | /* Make sure we return to the original directory upon exit, come | |
1918 | what may, since the OS doesn't do that for us. */ | |
1919 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1920 | #endif | |
1921 | ||
371d5dec MS |
1922 | init_cmd_lists (); /* This needs to be done first. */ |
1923 | initialize_targets (); /* Setup target_terminal macros for utils.c. */ | |
1924 | initialize_utils (); /* Make errors and warnings possible. */ | |
9dea9163 | 1925 | |
24b73f8e PP |
1926 | init_page_info (); |
1927 | ||
9dea9163 | 1928 | /* Here is where we call all the _initialize_foo routines. */ |
64cdedad | 1929 | initialize_all_files (); |
9dea9163 | 1930 | |
6c95b8df PA |
1931 | /* This creates the current_program_space. Do this after all the |
1932 | _initialize_foo routines have had a chance to install their | |
1933 | per-sspace data keys. Also do this before | |
1934 | initialize_current_architecture is called, because it accesses | |
1935 | exec_bfd of the current program space. */ | |
1936 | initialize_progspace (); | |
1937 | initialize_inferiors (); | |
64cdedad EZ |
1938 | initialize_current_architecture (); |
1939 | init_cli_cmds(); | |
371d5dec | 1940 | init_main (); /* But that omits this file! Do it now. */ |
64cdedad | 1941 | |
0ea3f30e DJ |
1942 | initialize_stdin_serial (); |
1943 | ||
6a06d660 PP |
1944 | /* Take a snapshot of our tty state before readline/ncurses have had a chance |
1945 | to alter it. */ | |
1946 | set_initial_gdb_ttystate (); | |
1947 | ||
362646f5 | 1948 | async_init_signals (); |
64cdedad | 1949 | |
371d5dec MS |
1950 | /* We need a default language for parsing expressions, so simple |
1951 | things like "set width 0" won't fail if no language is explicitly | |
1952 | set in a config file or implicitly set by reading an executable | |
1953 | during startup. */ | |
64cdedad | 1954 | set_language (language_c); |
371d5dec | 1955 | expected_language = current_language; /* Don't warn about the change. */ |
64cdedad | 1956 | |
6dddc817 | 1957 | /* Python initialization, for example, can require various commands to be |
371d5dec MS |
1958 | installed. For example "info pretty-printer" needs the "info" |
1959 | prefix to be installed. Keep things simple and just do final | |
6dddc817 DE |
1960 | script initialization here. */ |
1961 | finish_ext_lang_initialization (); | |
64cdedad | 1962 | } |