Commit | Line | Data |
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c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
a752853e | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 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" |
c906108c | 52 | |
371d5dec | 53 | /* readline include files. */ |
dbda9972 AC |
54 | #include "readline/readline.h" |
55 | #include "readline/history.h" | |
c906108c SS |
56 | |
57 | /* readline defines this. */ | |
58 | #undef savestring | |
59 | ||
60 | #include <sys/types.h> | |
c906108c | 61 | |
c2c6d25f | 62 | #include "event-top.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
c906108c | 64 | #include <ctype.h> |
8b93c638 JM |
65 | #include "ui-out.h" |
66 | #include "cli-out.h" | |
2f9d54cf | 67 | #include "tracepoint.h" |
93d6eb10 | 68 | #include "inf-loop.h" |
c906108c | 69 | |
ca7b0bbc TT |
70 | extern void initialize_all_files (void); |
71 | ||
95298e72 PM |
72 | #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt |
73 | #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix | |
74 | #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix | |
75 | ||
371d5dec | 76 | /* Default command line prompt. This is overriden in some configs. */ |
104c1213 JM |
77 | |
78 | #ifndef DEFAULT_PROMPT | |
79 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
80 | #endif |
81 | ||
e655c1a2 | 82 | /* Initialization file name for gdb. This is host-dependent. */ |
eaae3919 | 83 | |
e655c1a2 | 84 | const char gdbinit[] = GDBINIT; |
c906108c SS |
85 | |
86 | int inhibit_gdbinit = 0; | |
87 | ||
c906108c SS |
88 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
89 | ||
050a2e1d PA |
90 | /* Flag for whether we want to confirm potentially dangerous |
91 | operations. Default is yes. */ | |
92 | ||
e360902b | 93 | int confirm = 1; |
c906108c | 94 | |
920d2a44 | 95 | static void |
e360902b | 96 | show_confirm (struct ui_file *file, int from_tty, |
920d2a44 AC |
97 | struct cmd_list_element *c, const char *value) |
98 | { | |
3e43a32a MS |
99 | fprintf_filtered (file, _("Whether to confirm potentially " |
100 | "dangerous operations is %s.\n"), | |
920d2a44 AC |
101 | value); |
102 | } | |
c906108c | 103 | |
371d5dec MS |
104 | /* stdio stream that command input is being read from. Set to stdin |
105 | normally. Set by source_command to the file we are sourcing. Set | |
106 | to NULL if we are executing a user-defined command or interacting | |
107 | via a GUI. */ | |
c906108c SS |
108 | |
109 | FILE *instream; | |
110 | ||
698ba934 DJ |
111 | /* Flag to indicate whether a user defined command is currently running. */ |
112 | ||
113 | int in_user_command; | |
114 | ||
c906108c SS |
115 | /* Current working directory. */ |
116 | ||
117 | char *current_directory; | |
118 | ||
119 | /* The directory name is actually stored here (usually). */ | |
120 | char gdb_dirbuf[1024]; | |
121 | ||
122 | /* Function to call before reading a command, if nonzero. | |
123 | The function receives two args: an input stream, | |
124 | and a prompt string. */ | |
125 | ||
507f3c78 | 126 | void (*window_hook) (FILE *, char *); |
c906108c | 127 | |
c906108c SS |
128 | /* Buffer used for reading command lines, and the size |
129 | allocated for it so far. */ | |
130 | ||
dc7eb48e PA |
131 | char *saved_command_line; |
132 | int saved_command_line_size = 100; | |
c906108c SS |
133 | |
134 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 135 | affects things like recording into the command history, commands |
c906108c SS |
136 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
137 | whatever) can issue its own commands and also send along commands | |
138 | from the user, and have the user not notice that the user interface | |
139 | is issuing commands too. */ | |
140 | int server_command; | |
141 | ||
371d5dec | 142 | /* Timeout limit for response from target. */ |
c906108c | 143 | |
ce808e91 AC |
144 | /* The default value has been changed many times over the years. It |
145 | was originally 5 seconds. But that was thought to be a long time | |
146 | to sit and wait, so it was changed to 2 seconds. That was thought | |
147 | to be plenty unless the connection was going through some terminal | |
148 | server or multiplexer or other form of hairy serial connection. | |
149 | ||
150 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
151 | it began being used in other remote-* targets. It appears that the | |
152 | default was changed to 20 seconds at that time, perhaps because the | |
85a453d5 | 153 | Renesas E7000 ICE didn't always respond in a timely manner. |
ce808e91 AC |
154 | |
155 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
156 | 20 seconds is far worse. This demonstrates the difficulty of using | |
157 | a single variable for all protocol timeouts. | |
158 | ||
159 | As remote.c is used much more than remote-e7000.c, it was changed | |
371d5dec | 160 | back to 2 seconds in 1999. */ |
ce808e91 AC |
161 | |
162 | int remote_timeout = 2; | |
c906108c SS |
163 | |
164 | /* Non-zero tells remote* modules to output debugging info. */ | |
165 | ||
166 | int remote_debug = 0; | |
167 | ||
6dd77b81 RH |
168 | /* Sbrk location on entry to main. Used for statistics only. */ |
169 | #ifdef HAVE_SBRK | |
170 | char *lim_at_start; | |
171 | #endif | |
172 | ||
c906108c SS |
173 | /* Hooks for alternate command interfaces. */ |
174 | ||
371d5dec MS |
175 | /* Called after most modules have been initialized, but before taking |
176 | users command file. | |
1ad24239 | 177 | |
371d5dec MS |
178 | If the UI fails to initialize and it wants GDB to continue using |
179 | the default UI, then it should clear this hook before returning. */ | |
c906108c | 180 | |
9a4105ab | 181 | void (*deprecated_init_ui_hook) (char *argv0); |
7a292a7a | 182 | |
371d5dec MS |
183 | /* This hook is called from within gdb's many mini-event loops which |
184 | could steal control from a real user interface's event loop. It | |
185 | returns non-zero if the user is requesting a detach, zero | |
186 | otherwise. */ | |
7a292a7a | 187 | |
98bbd631 | 188 | int (*deprecated_ui_loop_hook) (int); |
c906108c | 189 | |
c906108c | 190 | |
c906108c SS |
191 | /* Called from print_frame_info to list the line we stopped in. */ |
192 | ||
371d5dec MS |
193 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, |
194 | int line, | |
195 | int stopline, | |
196 | int noerror); | |
c906108c SS |
197 | /* Replaces most of query. */ |
198 | ||
9a4105ab | 199 | int (*deprecated_query_hook) (const char *, va_list); |
c906108c SS |
200 | |
201 | /* Replaces most of warning. */ | |
202 | ||
9a4105ab | 203 | void (*deprecated_warning_hook) (const char *, va_list); |
c906108c | 204 | |
9a4105ab AC |
205 | /* These three functions support getting lines of text from the user. |
206 | They are used in sequence. First deprecated_readline_begin_hook is | |
207 | called with a text string that might be (for example) a message for | |
208 | the user to type in a sequence of commands to be executed at a | |
209 | breakpoint. If this function calls back to a GUI, it might take | |
210 | this opportunity to pop up a text interaction window with this | |
211 | message. Next, deprecated_readline_hook is called with a prompt | |
212 | that is emitted prior to collecting the user input. It can be | |
213 | called multiple times. Finally, deprecated_readline_end_hook is | |
214 | called to notify the GUI that we are done with the interaction | |
215 | window and it can close it. */ | |
c906108c | 216 | |
9a4105ab | 217 | void (*deprecated_readline_begin_hook) (char *, ...); |
38bcc89d | 218 | char *(*deprecated_readline_hook) (const char *); |
9a4105ab | 219 | void (*deprecated_readline_end_hook) (void); |
c906108c | 220 | |
6426a772 | 221 | /* Called as appropriate to notify the interface that we have attached |
371d5dec | 222 | to or detached from an already running process. */ |
6426a772 | 223 | |
9a4105ab AC |
224 | void (*deprecated_attach_hook) (void); |
225 | void (*deprecated_detach_hook) (void); | |
6426a772 | 226 | |
371d5dec MS |
227 | /* Called during long calculations to allow GUI to repair window |
228 | damage, and to check for stop buttons, etc... */ | |
c906108c | 229 | |
9a4105ab | 230 | void (*deprecated_interactive_hook) (void); |
c906108c | 231 | |
c378eb4e | 232 | /* Tell the GUI someone changed the register REGNO. -1 means |
c906108c | 233 | that the caller does not know which register changed or |
371d5dec | 234 | that several registers have changed (see value_assign). */ |
9a4105ab | 235 | void (*deprecated_register_changed_hook) (int regno); |
c906108c | 236 | |
371d5dec MS |
237 | /* Called when going to wait for the target. Usually allows the GUI |
238 | to run while waiting for target events. */ | |
c906108c | 239 | |
9a4105ab | 240 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, |
47608cb1 PA |
241 | struct target_waitstatus *status, |
242 | int options); | |
c906108c | 243 | |
371d5dec MS |
244 | /* Used by UI as a wrapper around command execution. May do various |
245 | things like enabling/disabling buttons, etc... */ | |
c906108c | 246 | |
371d5dec MS |
247 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, |
248 | char *cmd, int from_tty); | |
c906108c SS |
249 | |
250 | /* Called when the current thread changes. Argument is thread id. */ | |
251 | ||
9a4105ab | 252 | void (*deprecated_context_hook) (int id); |
c906108c | 253 | |
c906108c SS |
254 | /* Handler for SIGHUP. */ |
255 | ||
256 | #ifdef SIGHUP | |
392a587b | 257 | /* NOTE 1999-04-29: This function 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. */ |
b2cd6b29 JM |
260 | /* static */ void |
261 | quit_cover (void) | |
c906108c | 262 | { |
e360902b PA |
263 | /* Stop asking user for confirmation --- we're exiting. This |
264 | prevents asking the user dumb questions. */ | |
265 | confirm = 0; | |
c5aa993b | 266 | quit_command ((char *) 0, 0); |
c906108c SS |
267 | } |
268 | #endif /* defined SIGHUP */ | |
269 | \f | |
7a9dd1b2 | 270 | /* Line number we are currently in, in a file which is being sourced. */ |
392a587b | 271 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 272 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 273 | event-top.c into this file, top.c. */ |
cd0fc7c3 | 274 | /* static */ int source_line_number; |
c906108c SS |
275 | |
276 | /* Name of the file we are sourcing. */ | |
392a587b | 277 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 | 278 | gdb to use the event loop as the default command loop and we merge |
c378eb4e | 279 | event-top.c into this file, top.c. */ |
05159abe | 280 | /* static */ const char *source_file_name; |
c906108c | 281 | |
c906108c SS |
282 | /* Clean up on error during a "source" command (or execution of a |
283 | user-defined command). */ | |
284 | ||
d318976c | 285 | void |
e41a3b1a | 286 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
287 | { |
288 | /* Restore the previous input stream. */ | |
289 | instream = stream; | |
290 | } | |
291 | ||
292 | /* Read commands from STREAM. */ | |
293 | void | |
fba45db2 | 294 | read_command_file (FILE *stream) |
c906108c SS |
295 | { |
296 | struct cleanup *cleanups; | |
297 | ||
e41a3b1a | 298 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 299 | instream = stream; |
c5aa993b | 300 | command_loop (); |
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; | |
341 | ||
342 | /* First make sure that a new frame has been selected, in case the | |
343 | command or the hooks changed the program state. */ | |
344 | deprecated_safe_get_selected_frame (); | |
345 | if (current_language != expected_language) | |
346 | { | |
347 | if (language_mode == language_mode_auto && info_verbose) | |
348 | { | |
349 | language_info (1); /* Print what changed. */ | |
350 | } | |
351 | warned = 0; | |
352 | } | |
353 | ||
354 | /* Warn the user if the working language does not match the language | |
355 | of the current frame. Only warn the user if we are actually | |
356 | running the program, i.e. there is a stack. */ | |
357 | /* FIXME: This should be cacheing the frame and only running when | |
358 | the frame changes. */ | |
359 | ||
360 | if (has_stack_frames ()) | |
361 | { | |
362 | enum language flang; | |
363 | ||
364 | flang = get_frame_language (); | |
365 | if (!warned | |
366 | && flang != language_unknown | |
367 | && flang != current_language->la_language) | |
368 | { | |
369 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
370 | warned = 1; | |
371 | } | |
372 | } | |
373 | } | |
374 | ||
98880d46 PA |
375 | /* See top.h. */ |
376 | ||
377 | void | |
378 | maybe_wait_sync_command_done (int was_sync) | |
379 | { | |
380 | /* If the interpreter is in sync mode (we're running a user | |
381 | command's list, running command hooks or similars), and we | |
382 | just ran a synchronous command that started the target, wait | |
383 | for that command to end. */ | |
384 | if (!interpreter_async && !was_sync && sync_execution) | |
385 | { | |
386 | while (gdb_do_one_event () >= 0) | |
387 | if (!sync_execution) | |
388 | break; | |
389 | } | |
390 | } | |
391 | ||
648bf667 | 392 | /* Execute the line P as a command, in the current user context. |
d318976c | 393 | Pass FROM_TTY as second argument to the defining function. */ |
c906108c | 394 | |
d318976c FN |
395 | void |
396 | execute_command (char *p, int from_tty) | |
c906108c | 397 | { |
353d1d73 | 398 | struct cleanup *cleanup_if_error, *cleanup; |
52f0bd74 | 399 | struct cmd_list_element *c; |
d318976c | 400 | char *line; |
4e5d721f | 401 | |
353d1d73 | 402 | cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
028d0ed5 | 403 | cleanup = prepare_execute_command (); |
c906108c | 404 | |
d318976c FN |
405 | /* Force cleanup of any alloca areas if using C alloca instead of |
406 | a builtin alloca. */ | |
407 | alloca (0); | |
c906108c | 408 | |
d318976c FN |
409 | /* This can happen when command_line_input hits end of file. */ |
410 | if (p == NULL) | |
5fe41fbf TT |
411 | { |
412 | do_cleanups (cleanup); | |
5ae85e44 | 413 | discard_cleanups (cleanup_if_error); |
5fe41fbf TT |
414 | return; |
415 | } | |
c906108c | 416 | |
49d03eab | 417 | target_log_command (p); |
8b93c638 | 418 | |
d318976c FN |
419 | while (*p == ' ' || *p == '\t') |
420 | p++; | |
421 | if (*p) | |
8b93c638 | 422 | { |
6f937416 | 423 | const char *cmd = p; |
d318976c | 424 | char *arg; |
90e28950 TT |
425 | int was_sync = sync_execution; |
426 | ||
d318976c | 427 | line = p; |
8b93c638 | 428 | |
16026cd7 AS |
429 | /* If trace-commands is set then this will print this command. */ |
430 | print_command_trace (p); | |
431 | ||
6f937416 PA |
432 | c = lookup_cmd (&cmd, cmdlist, "", 0, 1); |
433 | p = (char *) cmd; | |
8b93c638 | 434 | |
d318976c FN |
435 | /* Pass null arg rather than an empty one. */ |
436 | arg = *p ? p : 0; | |
8b93c638 | 437 | |
9f60d481 AC |
438 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
439 | while the is_complete_command(cfunc) test is just plain | |
440 | bogus. They should both be replaced by a test of the form | |
441 | c->strip_trailing_white_space_p. */ | |
442 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
443 | can't be replaced with func. This is because it is the | |
444 | cfunc, and not the func, that has the value that the | |
445 | is_complete_command hack is testing for. */ | |
446 | /* Clear off trailing whitespace, except for set and complete | |
447 | command. */ | |
d318976c FN |
448 | if (arg |
449 | && c->type != set_cmd | |
bbaca940 | 450 | && !is_complete_command (c)) |
8b93c638 | 451 | { |
d318976c FN |
452 | p = arg + strlen (arg) - 1; |
453 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
454 | p--; | |
455 | *(p + 1) = '\0'; | |
8b93c638 JM |
456 | } |
457 | ||
371d5dec | 458 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 459 | execute_cmd_pre_hook (c); |
c906108c | 460 | |
1f2bdf09 | 461 | if (c->deprecated_warn_user) |
6f937416 | 462 | deprecated_cmd_warning (line); |
c906108c | 463 | |
7d74f244 DE |
464 | /* c->user_commands would be NULL in the case of a python command. */ |
465 | if (c->class == class_user && c->user_commands) | |
d318976c | 466 | execute_user_command (c, arg); |
5b9afe8a YQ |
467 | else if (c->type == set_cmd) |
468 | do_set_command (arg, from_tty, c); | |
469 | else if (c->type == show_cmd) | |
470 | do_show_command (arg, from_tty, c); | |
f436dd25 | 471 | else if (!cmd_func_p (c)) |
8a3fe4f8 | 472 | error (_("That is not a command, just a help topic.")); |
9a4105ab | 473 | else if (deprecated_call_command_hook) |
050a2e1d | 474 | deprecated_call_command_hook (c, arg, from_tty); |
d318976c | 475 | else |
050a2e1d | 476 | cmd_func (c, arg, from_tty); |
b4a14fd0 | 477 | |
98880d46 | 478 | maybe_wait_sync_command_done (was_sync); |
b4a14fd0 | 479 | |
371d5dec | 480 | /* If this command has been post-hooked, run the hook last. */ |
5913bcb0 | 481 | execute_cmd_post_hook (c); |
c906108c | 482 | |
c906108c SS |
483 | } |
484 | ||
77cce10f | 485 | check_frame_language_change (); |
028d0ed5 | 486 | |
353d1d73 JK |
487 | do_cleanups (cleanup); |
488 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
489 | } |
490 | ||
5da1313b JK |
491 | /* Run execute_command for P and FROM_TTY. Capture its output into the |
492 | returned string, do not display it to the screen. BATCH_FLAG will be | |
493 | temporarily set to true. */ | |
494 | ||
495 | char * | |
496 | execute_command_to_string (char *p, int from_tty) | |
497 | { | |
498 | struct ui_file *str_file; | |
499 | struct cleanup *cleanup; | |
500 | char *retval; | |
501 | ||
502 | /* GDB_STDOUT should be better already restored during these | |
503 | restoration callbacks. */ | |
504 | cleanup = set_batch_flag_and_make_cleanup_restore_page_info (); | |
505 | ||
b4a14fd0 PA |
506 | make_cleanup_restore_integer (&interpreter_async); |
507 | interpreter_async = 0; | |
508 | ||
5da1313b JK |
509 | str_file = mem_fileopen (); |
510 | ||
8d4d924b | 511 | make_cleanup_ui_file_delete (str_file); |
5da1313b JK |
512 | make_cleanup_restore_ui_file (&gdb_stdout); |
513 | make_cleanup_restore_ui_file (&gdb_stderr); | |
8d4d924b JK |
514 | make_cleanup_restore_ui_file (&gdb_stdlog); |
515 | make_cleanup_restore_ui_file (&gdb_stdtarg); | |
516 | make_cleanup_restore_ui_file (&gdb_stdtargerr); | |
517 | ||
79a45e25 | 518 | if (ui_out_redirect (current_uiout, str_file) < 0) |
8d4d924b JK |
519 | warning (_("Current output protocol does not support redirection")); |
520 | else | |
79a45e25 | 521 | make_cleanup_ui_out_redirect_pop (current_uiout); |
5da1313b JK |
522 | |
523 | gdb_stdout = str_file; | |
524 | gdb_stderr = str_file; | |
8d4d924b JK |
525 | gdb_stdlog = str_file; |
526 | gdb_stdtarg = str_file; | |
527 | gdb_stdtargerr = str_file; | |
5da1313b JK |
528 | |
529 | execute_command (p, from_tty); | |
530 | ||
531 | retval = ui_file_xstrdup (str_file, NULL); | |
532 | ||
533 | do_cleanups (cleanup); | |
534 | ||
535 | return retval; | |
536 | } | |
537 | ||
d318976c FN |
538 | /* Read commands from `instream' and execute them |
539 | until end of file or error reading instream. */ | |
c906108c | 540 | |
d318976c FN |
541 | void |
542 | command_loop (void) | |
c906108c | 543 | { |
d318976c FN |
544 | struct cleanup *old_chain; |
545 | char *command; | |
546 | int stdin_is_tty = ISATTY (stdin); | |
c5aa993b | 547 | |
d318976c FN |
548 | while (instream && !feof (instream)) |
549 | { | |
d318976c | 550 | if (window_hook && instream == stdin) |
ab821bc6 | 551 | (*window_hook) (instream, get_prompt ()); |
c906108c | 552 | |
522002f9 | 553 | clear_quit_flag (); |
d318976c FN |
554 | if (instream == stdin && stdin_is_tty) |
555 | reinitialize_more_filter (); | |
556 | old_chain = make_cleanup (null_cleanup, 0); | |
c906108c | 557 | |
c378eb4e | 558 | /* Get a command-line. This calls the readline package. */ |
d318976c | 559 | command = command_line_input (instream == stdin ? |
ab821bc6 | 560 | get_prompt () : (char *) NULL, |
d318976c | 561 | instream == stdin, "prompt"); |
d318976c | 562 | if (command == 0) |
5fe41fbf TT |
563 | { |
564 | do_cleanups (old_chain); | |
565 | return; | |
566 | } | |
c906108c | 567 | |
0f3bb72e | 568 | make_command_stats_cleanup (1); |
9e0b60a8 | 569 | |
fb1f94b0 PM |
570 | /* Do not execute commented lines. */ |
571 | if (command[0] != '#') | |
572 | { | |
573 | execute_command (command, instream == stdin); | |
347bddb7 | 574 | |
fb1f94b0 PM |
575 | /* Do any commands attached to breakpoint we are stopped at. */ |
576 | bpstat_do_actions (); | |
577 | } | |
d318976c | 578 | do_cleanups (old_chain); |
9e0b60a8 | 579 | } |
9e0b60a8 | 580 | } |
d318976c | 581 | \f |
47a80e90 TT |
582 | /* When nonzero, cause dont_repeat to do nothing. This should only be |
583 | set via prevent_dont_repeat. */ | |
584 | ||
585 | static int suppress_dont_repeat = 0; | |
586 | ||
d318976c | 587 | /* Commands call this if they do not want to be repeated by null lines. */ |
9e0b60a8 | 588 | |
d318976c FN |
589 | void |
590 | dont_repeat (void) | |
9e0b60a8 | 591 | { |
47a80e90 | 592 | if (suppress_dont_repeat || server_command) |
d318976c | 593 | return; |
9e0b60a8 | 594 | |
d318976c | 595 | /* If we aren't reading from standard input, we are saving the last |
371d5dec MS |
596 | thing read from stdin in line and don't want to delete it. Null |
597 | lines won't repeat here in any case. */ | |
d318976c | 598 | if (instream == stdin) |
dc7eb48e | 599 | *saved_command_line = 0; |
9e0b60a8 | 600 | } |
47a80e90 TT |
601 | |
602 | /* Prevent dont_repeat from working, and return a cleanup that | |
603 | restores the previous state. */ | |
604 | ||
605 | struct cleanup * | |
606 | prevent_dont_repeat (void) | |
607 | { | |
608 | struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat); | |
609 | ||
610 | suppress_dont_repeat = 1; | |
611 | return result; | |
612 | } | |
613 | ||
d318976c FN |
614 | \f |
615 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 616 | |
d318976c FN |
617 | It prints PROMPT_ARG once at the start. |
618 | Action is compatible with "readline", e.g. space for the result is | |
619 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 620 | |
d318976c FN |
621 | A NULL return means end of file. */ |
622 | char * | |
38bcc89d | 623 | gdb_readline (const char *prompt_arg) |
9e0b60a8 | 624 | { |
d318976c FN |
625 | int c; |
626 | char *result; | |
627 | int input_index = 0; | |
628 | int result_size = 80; | |
9e0b60a8 | 629 | |
d318976c | 630 | if (prompt_arg) |
9e0b60a8 | 631 | { |
d318976c FN |
632 | /* Don't use a _filtered function here. It causes the assumed |
633 | character position to be off, since the newline we read from | |
634 | the user is not accounted for. */ | |
635 | fputs_unfiltered (prompt_arg, gdb_stdout); | |
9e0b60a8 JM |
636 | gdb_flush (gdb_stdout); |
637 | } | |
638 | ||
d318976c | 639 | result = (char *) xmalloc (result_size); |
9e0b60a8 JM |
640 | |
641 | while (1) | |
642 | { | |
d318976c FN |
643 | /* Read from stdin if we are executing a user defined command. |
644 | This is the right thing for prompt_for_continue, at least. */ | |
645 | c = fgetc (instream ? instream : stdin); | |
9e0b60a8 | 646 | |
d318976c | 647 | if (c == EOF) |
9e0b60a8 | 648 | { |
d318976c FN |
649 | if (input_index > 0) |
650 | /* The last line does not end with a newline. Return it, and | |
651 | if we are called again fgetc will still return EOF and | |
652 | we'll return NULL then. */ | |
9e0b60a8 | 653 | break; |
b8c9b27d | 654 | xfree (result); |
d318976c | 655 | return NULL; |
9e0b60a8 | 656 | } |
c5aa993b | 657 | |
d318976c | 658 | if (c == '\n') |
9e0b60a8 | 659 | { |
d318976c FN |
660 | if (input_index > 0 && result[input_index - 1] == '\r') |
661 | input_index--; | |
662 | break; | |
9e0b60a8 | 663 | } |
9e0b60a8 | 664 | |
d318976c FN |
665 | result[input_index++] = c; |
666 | while (input_index >= result_size) | |
9e0b60a8 | 667 | { |
d318976c FN |
668 | result_size *= 2; |
669 | result = (char *) xrealloc (result, result_size); | |
9e0b60a8 | 670 | } |
9e0b60a8 JM |
671 | } |
672 | ||
d318976c FN |
673 | result[input_index++] = '\0'; |
674 | return result; | |
9e0b60a8 JM |
675 | } |
676 | ||
d318976c FN |
677 | /* Variables which control command line editing and history |
678 | substitution. These variables are given default values at the end | |
679 | of this file. */ | |
680 | static int command_editing_p; | |
920d2a44 | 681 | |
d318976c FN |
682 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
683 | gdb to use the event loop as the default command loop and we merge | |
c378eb4e | 684 | event-top.c into this file, top.c. */ |
920d2a44 | 685 | |
d318976c | 686 | /* static */ int history_expansion_p; |
920d2a44 | 687 | |
d318976c | 688 | static int write_history_p; |
920d2a44 AC |
689 | static void |
690 | show_write_history_p (struct ui_file *file, int from_tty, | |
691 | struct cmd_list_element *c, const char *value) | |
692 | { | |
693 | fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"), | |
694 | value); | |
695 | } | |
696 | ||
840a9a1f PA |
697 | /* The variable associated with the "set/show history size" |
698 | command. */ | |
699 | static unsigned int history_size_setshow_var; | |
700 | ||
920d2a44 AC |
701 | static void |
702 | show_history_size (struct ui_file *file, int from_tty, | |
703 | struct cmd_list_element *c, const char *value) | |
704 | { | |
705 | fprintf_filtered (file, _("The size of the command history is %s.\n"), | |
706 | value); | |
707 | } | |
708 | ||
d318976c | 709 | static char *history_filename; |
920d2a44 AC |
710 | static void |
711 | show_history_filename (struct ui_file *file, int from_tty, | |
712 | struct cmd_list_element *c, const char *value) | |
713 | { | |
3e43a32a MS |
714 | fprintf_filtered (file, _("The filename in which to record " |
715 | "the command history is \"%s\".\n"), | |
920d2a44 AC |
716 | value); |
717 | } | |
9e0b60a8 | 718 | |
b4f5539f | 719 | /* This is like readline(), but it has some gdb-specific behavior. |
2e03ee74 | 720 | gdb may want readline in both the synchronous and async modes during |
b4f5539f TT |
721 | a single gdb invocation. At the ordinary top-level prompt we might |
722 | be using the async readline. That means we can't use | |
723 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
724 | However, for a secondary prompt (" >", such as occurs during a | |
2e03ee74 DJ |
725 | `define'), gdb wants a synchronous response. |
726 | ||
727 | We used to call readline() directly, running it in synchronous | |
728 | mode. But mixing modes this way is not supported, and as of | |
729 | readline 5.x it no longer works; the arrow keys come unbound during | |
730 | the synchronous call. So we make a nested call into the event | |
731 | loop. That's what gdb_readline_wrapper is for. */ | |
732 | ||
733 | /* A flag set as soon as gdb_readline_wrapper_line is called; we can't | |
734 | rely on gdb_readline_wrapper_result, which might still be NULL if | |
735 | the user types Control-D for EOF. */ | |
736 | static int gdb_readline_wrapper_done; | |
737 | ||
738 | /* The result of the current call to gdb_readline_wrapper, once a newline | |
739 | is seen. */ | |
740 | static char *gdb_readline_wrapper_result; | |
741 | ||
742 | /* Any intercepted hook. Operate-and-get-next sets this, expecting it | |
743 | to be called after the newline is processed (which will redisplay | |
744 | the prompt). But in gdb_readline_wrapper we will not get a new | |
745 | prompt until the next call, or until we return to the event loop. | |
746 | So we disable this hook around the newline and restore it before we | |
747 | return. */ | |
748 | static void (*saved_after_char_processing_hook) (void); | |
749 | ||
750 | /* This function is called when readline has seen a complete line of | |
751 | text. */ | |
752 | ||
753 | static void | |
754 | gdb_readline_wrapper_line (char *line) | |
755 | { | |
756 | gdb_assert (!gdb_readline_wrapper_done); | |
757 | gdb_readline_wrapper_result = line; | |
758 | gdb_readline_wrapper_done = 1; | |
759 | ||
760 | /* Prevent operate-and-get-next from acting too early. */ | |
761 | saved_after_char_processing_hook = after_char_processing_hook; | |
762 | after_char_processing_hook = NULL; | |
1b05479a DJ |
763 | |
764 | /* Prevent parts of the prompt from being redisplayed if annotations | |
0017922d | 765 | are enabled, and readline's state getting out of sync. We'll |
d3d4baed PA |
766 | reinstall the callback handler, which puts the terminal in raw |
767 | mode (or in readline lingo, in prepped state), when we're next | |
768 | ready to process user input, either in display_gdb_prompt, or if | |
769 | we're handling an asynchronous target event and running in the | |
770 | background, just before returning to the event loop to process | |
771 | further input (or more target events). */ | |
1b05479a | 772 | if (async_command_editing_p) |
d3d4baed | 773 | gdb_rl_callback_handler_remove (); |
2e03ee74 DJ |
774 | } |
775 | ||
776 | struct gdb_readline_wrapper_cleanup | |
777 | { | |
778 | void (*handler_orig) (char *); | |
2e03ee74 | 779 | int already_prompted_orig; |
93d6eb10 PA |
780 | |
781 | /* Whether the target was async. */ | |
782 | int target_is_async_orig; | |
2e03ee74 DJ |
783 | }; |
784 | ||
785 | static void | |
786 | gdb_readline_wrapper_cleanup (void *arg) | |
787 | { | |
788 | struct gdb_readline_wrapper_cleanup *cleanup = arg; | |
789 | ||
2e03ee74 | 790 | rl_already_prompted = cleanup->already_prompted_orig; |
2e03ee74 DJ |
791 | |
792 | gdb_assert (input_handler == gdb_readline_wrapper_line); | |
793 | input_handler = cleanup->handler_orig; | |
0017922d | 794 | |
d3d4baed PA |
795 | /* Don't restore our input handler in readline yet. That would make |
796 | readline prep the terminal (putting it in raw mode), while the | |
797 | line we just read may trigger execution of a command that expects | |
798 | the terminal in the default cooked/canonical mode, such as e.g., | |
799 | running Python's interactive online help utility. See | |
800 | gdb_readline_wrapper_line for when we'll reinstall it. */ | |
0017922d | 801 | |
2e03ee74 DJ |
802 | gdb_readline_wrapper_result = NULL; |
803 | gdb_readline_wrapper_done = 0; | |
804 | ||
805 | after_char_processing_hook = saved_after_char_processing_hook; | |
806 | saved_after_char_processing_hook = NULL; | |
807 | ||
93d6eb10 PA |
808 | if (cleanup->target_is_async_orig) |
809 | target_async (inferior_event_handler, 0); | |
810 | ||
2e03ee74 DJ |
811 | xfree (cleanup); |
812 | } | |
813 | ||
b4f5539f | 814 | char * |
38bcc89d | 815 | gdb_readline_wrapper (const char *prompt) |
b4f5539f | 816 | { |
2e03ee74 DJ |
817 | struct cleanup *back_to; |
818 | struct gdb_readline_wrapper_cleanup *cleanup; | |
819 | char *retval; | |
820 | ||
821 | cleanup = xmalloc (sizeof (*cleanup)); | |
822 | cleanup->handler_orig = input_handler; | |
823 | input_handler = gdb_readline_wrapper_line; | |
824 | ||
2e03ee74 DJ |
825 | cleanup->already_prompted_orig = rl_already_prompted; |
826 | ||
93d6eb10 PA |
827 | cleanup->target_is_async_orig = target_is_async_p (); |
828 | ||
2e03ee74 DJ |
829 | back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup); |
830 | ||
93d6eb10 PA |
831 | if (cleanup->target_is_async_orig) |
832 | target_async (NULL, NULL); | |
833 | ||
2e03ee74 | 834 | /* Display our prompt and prevent double prompt display. */ |
1b05479a | 835 | display_gdb_prompt (prompt); |
2e03ee74 DJ |
836 | rl_already_prompted = 1; |
837 | ||
362646f5 | 838 | if (after_char_processing_hook) |
2e03ee74 DJ |
839 | (*after_char_processing_hook) (); |
840 | gdb_assert (after_char_processing_hook == NULL); | |
841 | ||
e0dd0826 | 842 | while (gdb_do_one_event () >= 0) |
2e03ee74 DJ |
843 | if (gdb_readline_wrapper_done) |
844 | break; | |
b4f5539f | 845 | |
2e03ee74 DJ |
846 | retval = gdb_readline_wrapper_result; |
847 | do_cleanups (back_to); | |
848 | return retval; | |
b4f5539f TT |
849 | } |
850 | ||
9e0b60a8 | 851 | \f |
467d8519 TT |
852 | /* The current saved history number from operate-and-get-next. |
853 | This is -1 if not valid. */ | |
854 | static int operate_saved_history = -1; | |
855 | ||
856 | /* This is put on the appropriate hook and helps operate-and-get-next | |
857 | do its work. */ | |
b9362cc7 | 858 | static void |
5ae5f592 | 859 | gdb_rl_operate_and_get_next_completion (void) |
467d8519 TT |
860 | { |
861 | int delta = where_history () - operate_saved_history; | |
5d502164 | 862 | |
467d8519 TT |
863 | /* The `key' argument to rl_get_previous_history is ignored. */ |
864 | rl_get_previous_history (delta, 0); | |
865 | operate_saved_history = -1; | |
866 | ||
867 | /* readline doesn't automatically update the display for us. */ | |
12f4afab | 868 | rl_redisplay (); |
467d8519 TT |
869 | |
870 | after_char_processing_hook = NULL; | |
871 | rl_pre_input_hook = NULL; | |
872 | } | |
873 | ||
874 | /* This is a gdb-local readline command handler. It accepts the | |
875 | current command line (like RET does) and, if this command was taken | |
876 | from the history, arranges for the next command in the history to | |
877 | appear on the command line when the prompt returns. | |
878 | We ignore the arguments. */ | |
879 | static int | |
880 | gdb_rl_operate_and_get_next (int count, int key) | |
881 | { | |
b5686e99 MK |
882 | int where; |
883 | ||
362646f5 AC |
884 | /* Use the async hook. */ |
885 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
467d8519 | 886 | |
b5686e99 MK |
887 | /* Find the current line, and find the next line to use. */ |
888 | where = where_history(); | |
889 | ||
1fb2e2b5 PA |
890 | if ((history_is_stifled () && (history_length >= history_max_entries)) |
891 | || (where >= history_length - 1)) | |
b5686e99 MK |
892 | operate_saved_history = where; |
893 | else | |
894 | operate_saved_history = where + 1; | |
895 | ||
467d8519 TT |
896 | return rl_newline (1, key); |
897 | } | |
08b13bdd PP |
898 | |
899 | /* Number of user commands executed during this session. */ | |
900 | ||
901 | static int command_count = 0; | |
902 | ||
903 | /* Add the user command COMMAND to the input history list. */ | |
904 | ||
905 | void | |
906 | gdb_add_history (const char *command) | |
907 | { | |
908 | add_history (command); | |
909 | command_count++; | |
910 | } | |
911 | ||
912 | /* Safely append new history entries to the history file in a corruption-free | |
913 | way using an intermediate local history file. */ | |
914 | ||
915 | static void | |
916 | gdb_safe_append_history (void) | |
917 | { | |
918 | int ret, saved_errno; | |
919 | char *local_history_filename; | |
920 | struct cleanup *old_chain; | |
921 | ||
922 | local_history_filename | |
923 | = xstrprintf ("%s-gdb%d~", history_filename, getpid ()); | |
924 | old_chain = make_cleanup (xfree, local_history_filename); | |
925 | ||
926 | ret = rename (history_filename, local_history_filename); | |
927 | saved_errno = errno; | |
928 | if (ret < 0 && saved_errno != ENOENT) | |
929 | { | |
930 | warning (_("Could not rename %s to %s: %s"), | |
931 | history_filename, local_history_filename, | |
932 | safe_strerror (saved_errno)); | |
933 | } | |
934 | else | |
935 | { | |
936 | if (ret < 0) | |
937 | { | |
938 | /* If the rename failed with ENOENT then either the global history | |
939 | file never existed in the first place or another GDB process is | |
940 | currently appending to it (and has thus temporarily renamed it). | |
941 | Since we can't distinguish between these two cases, we have to | |
942 | conservatively assume the first case and therefore must write out | |
943 | (not append) our known history to our local history file and try | |
944 | to move it back anyway. Otherwise a global history file would | |
945 | never get created! */ | |
946 | gdb_assert (saved_errno == ENOENT); | |
947 | write_history (local_history_filename); | |
948 | } | |
949 | else | |
950 | { | |
951 | append_history (command_count, local_history_filename); | |
952 | history_truncate_file (local_history_filename, history_max_entries); | |
953 | } | |
954 | ||
955 | ret = rename (local_history_filename, history_filename); | |
956 | saved_errno = errno; | |
957 | if (ret < 0 && saved_errno != EEXIST) | |
958 | warning (_("Could not rename %s to %s: %s"), | |
959 | local_history_filename, history_filename, | |
960 | safe_strerror (saved_errno)); | |
961 | } | |
962 | ||
963 | do_cleanups (old_chain); | |
964 | } | |
965 | ||
d318976c FN |
966 | /* Read one line from the command input stream `instream' |
967 | into the local static buffer `linebuffer' (whose current length | |
968 | is `linelength'). | |
969 | The buffer is made bigger as necessary. | |
970 | Returns the address of the start of the line. | |
9e0b60a8 | 971 | |
d318976c | 972 | NULL is returned for end of file. |
9e0b60a8 | 973 | |
d318976c FN |
974 | *If* the instream == stdin & stdin is a terminal, the line read |
975 | is copied into the file line saver (global var char *line, | |
976 | length linesize) so that it can be duplicated. | |
9e0b60a8 | 977 | |
d318976c FN |
978 | This routine either uses fancy command line editing or |
979 | simple input as the user has requested. */ | |
10689f25 | 980 | |
d318976c | 981 | char * |
38bcc89d | 982 | command_line_input (const char *prompt_arg, int repeat, char *annotation_suffix) |
9e0b60a8 | 983 | { |
d318976c FN |
984 | static char *linebuffer = 0; |
985 | static unsigned linelength = 0; | |
38bcc89d | 986 | const char *prompt = prompt_arg; |
52f0bd74 | 987 | char *p; |
d318976c FN |
988 | char *p1; |
989 | char *rl; | |
d318976c FN |
990 | char *nline; |
991 | char got_eof = 0; | |
992 | ||
993 | /* The annotation suffix must be non-NULL. */ | |
994 | if (annotation_suffix == NULL) | |
995 | annotation_suffix = ""; | |
9e0b60a8 | 996 | |
d318976c FN |
997 | if (annotation_level > 1 && instream == stdin) |
998 | { | |
38bcc89d SM |
999 | char *local_prompt; |
1000 | ||
1001 | local_prompt = alloca ((prompt == NULL ? 0 : strlen (prompt)) | |
d318976c | 1002 | + strlen (annotation_suffix) + 40); |
38bcc89d | 1003 | if (prompt == NULL) |
d318976c FN |
1004 | local_prompt[0] = '\0'; |
1005 | else | |
38bcc89d | 1006 | strcpy (local_prompt, prompt); |
d318976c FN |
1007 | strcat (local_prompt, "\n\032\032"); |
1008 | strcat (local_prompt, annotation_suffix); | |
1009 | strcat (local_prompt, "\n"); | |
38bcc89d SM |
1010 | |
1011 | prompt = local_prompt; | |
d318976c | 1012 | } |
9e0b60a8 | 1013 | |
d318976c | 1014 | if (linebuffer == 0) |
9e0b60a8 | 1015 | { |
d318976c FN |
1016 | linelength = 80; |
1017 | linebuffer = (char *) xmalloc (linelength); | |
9e0b60a8 | 1018 | } |
9e0b60a8 | 1019 | |
d318976c | 1020 | p = linebuffer; |
9e0b60a8 | 1021 | |
d318976c FN |
1022 | /* Control-C quits instantly if typed while in this loop |
1023 | since it should not wait until the user types a newline. */ | |
1024 | immediate_quit++; | |
522002f9 | 1025 | QUIT; |
d318976c FN |
1026 | #ifdef STOP_SIGNAL |
1027 | if (job_control) | |
362646f5 | 1028 | signal (STOP_SIGNAL, handle_stop_sig); |
d318976c FN |
1029 | #endif |
1030 | ||
1031 | while (1) | |
9e0b60a8 | 1032 | { |
371d5dec MS |
1033 | /* Make sure that all output has been output. Some machines may |
1034 | let you get away with leaving out some of the gdb_flush, but | |
1035 | not all. */ | |
d318976c FN |
1036 | wrap_here (""); |
1037 | gdb_flush (gdb_stdout); | |
1038 | gdb_flush (gdb_stderr); | |
1039 | ||
1040 | if (source_file_name != NULL) | |
637537d0 | 1041 | ++source_line_number; |
d318976c FN |
1042 | |
1043 | if (annotation_level > 1 && instream == stdin) | |
1044 | { | |
306d9ac5 DC |
1045 | puts_unfiltered ("\n\032\032pre-"); |
1046 | puts_unfiltered (annotation_suffix); | |
1047 | puts_unfiltered ("\n"); | |
d318976c FN |
1048 | } |
1049 | ||
1050 | /* Don't use fancy stuff if not talking to stdin. */ | |
698ba934 | 1051 | if (deprecated_readline_hook && input_from_terminal_p ()) |
d318976c | 1052 | { |
38bcc89d | 1053 | rl = (*deprecated_readline_hook) (prompt); |
d318976c | 1054 | } |
698ba934 | 1055 | else if (command_editing_p && input_from_terminal_p ()) |
d318976c | 1056 | { |
38bcc89d | 1057 | rl = gdb_readline_wrapper (prompt); |
d318976c | 1058 | } |
9e0b60a8 | 1059 | else |
d318976c | 1060 | { |
38bcc89d | 1061 | rl = gdb_readline (prompt); |
d318976c | 1062 | } |
9e0b60a8 | 1063 | |
d318976c FN |
1064 | if (annotation_level > 1 && instream == stdin) |
1065 | { | |
306d9ac5 DC |
1066 | puts_unfiltered ("\n\032\032post-"); |
1067 | puts_unfiltered (annotation_suffix); | |
1068 | puts_unfiltered ("\n"); | |
d318976c | 1069 | } |
9e0b60a8 | 1070 | |
d318976c | 1071 | if (!rl || rl == (char *) EOF) |
9e0b60a8 | 1072 | { |
d318976c FN |
1073 | got_eof = 1; |
1074 | break; | |
9e0b60a8 | 1075 | } |
d318976c FN |
1076 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
1077 | { | |
1078 | linelength = strlen (rl) + 1 + (p - linebuffer); | |
1079 | nline = (char *) xrealloc (linebuffer, linelength); | |
1080 | p += nline - linebuffer; | |
1081 | linebuffer = nline; | |
1082 | } | |
1083 | p1 = rl; | |
1084 | /* Copy line. Don't copy null at end. (Leaves line alone | |
371d5dec | 1085 | if this was just a newline). */ |
d318976c FN |
1086 | while (*p1) |
1087 | *p++ = *p1++; | |
9e0b60a8 | 1088 | |
b8c9b27d | 1089 | xfree (rl); /* Allocated in readline. */ |
9e0b60a8 | 1090 | |
d318976c FN |
1091 | if (p == linebuffer || *(p - 1) != '\\') |
1092 | break; | |
9e0b60a8 | 1093 | |
d318976c | 1094 | p--; /* Put on top of '\'. */ |
38bcc89d | 1095 | prompt = NULL; |
d318976c | 1096 | } |
9e0b60a8 | 1097 | |
d318976c FN |
1098 | #ifdef STOP_SIGNAL |
1099 | if (job_control) | |
1100 | signal (STOP_SIGNAL, SIG_DFL); | |
1101 | #endif | |
1102 | immediate_quit--; | |
9e0b60a8 | 1103 | |
d318976c FN |
1104 | if (got_eof) |
1105 | return NULL; | |
9e0b60a8 | 1106 | |
d318976c FN |
1107 | #define SERVER_COMMAND_LENGTH 7 |
1108 | server_command = | |
1109 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
bf896cb0 | 1110 | && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0; |
d318976c | 1111 | if (server_command) |
9e0b60a8 | 1112 | { |
d318976c FN |
1113 | /* Note that we don't set `line'. Between this and the check in |
1114 | dont_repeat, this insures that repeating will still do the | |
1115 | right thing. */ | |
1116 | *p = '\0'; | |
1117 | return linebuffer + SERVER_COMMAND_LENGTH; | |
9e0b60a8 | 1118 | } |
9e0b60a8 | 1119 | |
d318976c FN |
1120 | /* Do history expansion if that is wished. */ |
1121 | if (history_expansion_p && instream == stdin | |
1122 | && ISATTY (instream)) | |
1123 | { | |
1124 | char *history_value; | |
1125 | int expanded; | |
9e0b60a8 | 1126 | |
d318976c FN |
1127 | *p = '\0'; /* Insert null now. */ |
1128 | expanded = history_expand (linebuffer, &history_value); | |
1129 | if (expanded) | |
1130 | { | |
1131 | /* Print the changes. */ | |
1132 | printf_unfiltered ("%s\n", history_value); | |
9e0b60a8 | 1133 | |
d318976c FN |
1134 | /* If there was an error, call this function again. */ |
1135 | if (expanded < 0) | |
1136 | { | |
b8c9b27d | 1137 | xfree (history_value); |
38bcc89d | 1138 | return command_line_input (prompt, repeat, |
3e43a32a | 1139 | annotation_suffix); |
d318976c FN |
1140 | } |
1141 | if (strlen (history_value) > linelength) | |
1142 | { | |
1143 | linelength = strlen (history_value) + 1; | |
1144 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1145 | } | |
1146 | strcpy (linebuffer, history_value); | |
1147 | p = linebuffer + strlen (linebuffer); | |
d318976c | 1148 | } |
91d2803c | 1149 | xfree (history_value); |
d318976c | 1150 | } |
9e0b60a8 | 1151 | |
371d5dec MS |
1152 | /* If we just got an empty line, and that is supposed to repeat the |
1153 | previous command, return the value in the global buffer. */ | |
d318976c | 1154 | if (repeat && p == linebuffer) |
dc7eb48e | 1155 | return saved_command_line; |
d318976c FN |
1156 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); |
1157 | if (repeat && !*p1) | |
dc7eb48e | 1158 | return saved_command_line; |
9e0b60a8 | 1159 | |
d318976c | 1160 | *p = 0; |
9e0b60a8 | 1161 | |
d318976c | 1162 | /* Add line to history if appropriate. */ |
840da61a | 1163 | if (*linebuffer && input_from_terminal_p ()) |
08b13bdd | 1164 | gdb_add_history (linebuffer); |
9e0b60a8 | 1165 | |
d318976c FN |
1166 | /* Save into global buffer if appropriate. */ |
1167 | if (repeat) | |
1168 | { | |
dc7eb48e | 1169 | if (linelength > saved_command_line_size) |
d318976c | 1170 | { |
dc7eb48e PA |
1171 | saved_command_line = xrealloc (saved_command_line, linelength); |
1172 | saved_command_line_size = linelength; | |
d318976c | 1173 | } |
dc7eb48e PA |
1174 | strcpy (saved_command_line, linebuffer); |
1175 | return saved_command_line; | |
d318976c | 1176 | } |
9e0b60a8 | 1177 | |
d318976c | 1178 | return linebuffer; |
9e0b60a8 JM |
1179 | } |
1180 | \f | |
371d5dec | 1181 | /* Print the GDB banner. */ |
9e0b60a8 | 1182 | void |
fba45db2 | 1183 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1184 | { |
1185 | /* From GNU coding standards, first line is meant to be easy for a | |
1186 | program to parse, and is just canonical program name and version | |
371d5dec | 1187 | number, which starts after last space. */ |
9e0b60a8 | 1188 | |
c16158bc | 1189 | fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version); |
9e0b60a8 | 1190 | |
371d5dec | 1191 | /* Second line is a copyright notice. */ |
9e0b60a8 | 1192 | |
3e43a32a | 1193 | fprintf_filtered (stream, |
76f2b779 | 1194 | "Copyright (C) 2015 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1195 | |
1196 | /* Following the copyright is a brief statement that the program is | |
1197 | free software, that users are free to copy and change it on | |
1198 | certain conditions, that it is covered by the GNU GPL, and that | |
371d5dec | 1199 | there is no warranty. */ |
9e0b60a8 JM |
1200 | |
1201 | fprintf_filtered (stream, "\ | |
3e43a32a MS |
1202 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\ |
1203 | \nThis is free software: you are free to change and redistribute it.\n\ | |
0b93d57c | 1204 | There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\ |
b8533aec | 1205 | and \"show warranty\" for details.\n"); |
9e0b60a8 | 1206 | |
371d5dec | 1207 | /* After the required info we print the configuration information. */ |
9e0b60a8 JM |
1208 | |
1209 | fprintf_filtered (stream, "This GDB was configured as \""); | |
6314a349 | 1210 | if (strcmp (host_name, target_name) != 0) |
9e0b60a8 | 1211 | { |
3e43a32a MS |
1212 | fprintf_filtered (stream, "--host=%s --target=%s", |
1213 | host_name, target_name); | |
9e0b60a8 JM |
1214 | } |
1215 | else | |
1216 | { | |
1217 | fprintf_filtered (stream, "%s", host_name); | |
1218 | } | |
6eaaf48b EZ |
1219 | fprintf_filtered (stream, "\".\n\ |
1220 | Type \"show configuration\" for configuration details."); | |
c16158bc JM |
1221 | |
1222 | if (REPORT_BUGS_TO[0]) | |
1223 | { | |
6eaaf48b | 1224 | fprintf_filtered (stream, |
c16158bc | 1225 | _("\nFor bug reporting instructions, please see:\n")); |
1cf55f60 | 1226 | fprintf_filtered (stream, "%s.\n", REPORT_BUGS_TO); |
c16158bc | 1227 | } |
1cf55f60 PM |
1228 | fprintf_filtered (stream, |
1229 | _("Find the GDB manual and other documentation \ | |
1230 | resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n")); | |
1231 | fprintf_filtered (stream, _("For help, type \"help\".\n")); | |
1232 | fprintf_filtered (stream, _("Type \"apropos word\" to search for \ | |
af4c453a | 1233 | commands related to \"word\".")); |
9e0b60a8 | 1234 | } |
6eaaf48b EZ |
1235 | |
1236 | /* Print the details of GDB build-time configuration. */ | |
1237 | void | |
1238 | print_gdb_configuration (struct ui_file *stream) | |
1239 | { | |
1240 | fprintf_filtered (stream, _("\ | |
1241 | This GDB was configured as follows:\n\ | |
1242 | configure --host=%s --target=%s\n\ | |
1243 | "), host_name, target_name); | |
1244 | fprintf_filtered (stream, _("\ | |
1245 | --with-auto-load-dir=%s\n\ | |
1246 | --with-auto-load-safe-path=%s\n\ | |
1247 | "), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH); | |
1248 | #if HAVE_LIBEXPAT | |
1249 | fprintf_filtered (stream, _("\ | |
1250 | --with-expat\n\ | |
1251 | ")); | |
1252 | #else | |
1253 | fprintf_filtered (stream, _("\ | |
1254 | --without-expat\n\ | |
1255 | ")); | |
1256 | #endif | |
1257 | if (GDB_DATADIR[0]) | |
1258 | fprintf_filtered (stream, _("\ | |
1259 | --with-gdb-datadir=%s%s\n\ | |
1260 | "), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : ""); | |
1261 | #ifdef ICONV_BIN | |
1262 | fprintf_filtered (stream, _("\ | |
1263 | --with-iconv-bin=%s%s\n\ | |
1264 | "), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : ""); | |
1265 | #endif | |
1266 | if (JIT_READER_DIR[0]) | |
1267 | fprintf_filtered (stream, _("\ | |
1268 | --with-jit-reader-dir=%s%s\n\ | |
1269 | "), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : ""); | |
1270 | #if HAVE_LIBUNWIND_IA64_H | |
1271 | fprintf_filtered (stream, _("\ | |
1272 | --with-libunwind-ia64\n\ | |
1273 | ")); | |
1274 | #else | |
1275 | fprintf_filtered (stream, _("\ | |
1276 | --without-libunwind-ia64\n\ | |
1277 | ")); | |
1278 | #endif | |
1279 | #if HAVE_LIBLZMA | |
1280 | fprintf_filtered (stream, _("\ | |
1281 | --with-lzma\n\ | |
1282 | ")); | |
1283 | #else | |
1284 | fprintf_filtered (stream, _("\ | |
1285 | --without-lzma\n\ | |
1286 | ")); | |
1287 | #endif | |
1288 | #ifdef WITH_PYTHON_PATH | |
1289 | fprintf_filtered (stream, _("\ | |
1290 | --with-python=%s%s\n\ | |
1291 | "), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : ""); | |
1292 | #endif | |
97d66cc6 EZ |
1293 | #if HAVE_GUILE |
1294 | fprintf_filtered (stream, _("\ | |
1295 | --with-guile\n\ | |
1296 | ")); | |
1297 | #else | |
1298 | fprintf_filtered (stream, _("\ | |
1299 | --without-guile\n\ | |
1300 | ")); | |
1301 | #endif | |
6eaaf48b EZ |
1302 | #ifdef RELOC_SRCDIR |
1303 | fprintf_filtered (stream, _("\ | |
1304 | --with-relocated-sources=%s\n\ | |
1305 | "), RELOC_SRCDIR); | |
1306 | #endif | |
1307 | if (DEBUGDIR[0]) | |
1308 | fprintf_filtered (stream, _("\ | |
1309 | --with-separate-debug-dir=%s%s\n\ | |
1310 | "), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : ""); | |
1311 | if (TARGET_SYSTEM_ROOT[0]) | |
1312 | fprintf_filtered (stream, _("\ | |
1313 | --with-sysroot=%s%s\n\ | |
1314 | "), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : ""); | |
1315 | if (SYSTEM_GDBINIT[0]) | |
1316 | fprintf_filtered (stream, _("\ | |
1317 | --with-system-gdbinit=%s%s\n\ | |
1318 | "), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : ""); | |
1319 | #if HAVE_ZLIB_H | |
1320 | fprintf_filtered (stream, _("\ | |
1321 | --with-zlib\n\ | |
1322 | ")); | |
1323 | #else | |
1324 | fprintf_filtered (stream, _("\ | |
1325 | --without-zlib\n\ | |
1326 | ")); | |
1327 | #endif | |
ab116149 YQ |
1328 | #if HAVE_LIBBABELTRACE |
1329 | fprintf_filtered (stream, _("\ | |
1330 | --with-babeltrace\n\ | |
1331 | ")); | |
1332 | #else | |
1333 | fprintf_filtered (stream, _("\ | |
1334 | --without-babeltrace\n\ | |
1335 | ")); | |
1336 | #endif | |
48d1d6f5 EZ |
1337 | /* We assume "relocatable" will be printed at least once, thus we always |
1338 | print this text. It's a reasonably safe assumption for now. */ | |
1339 | fprintf_filtered (stream, _("\n\ | |
1340 | (\"Relocatable\" means the directory can be moved with the GDB installation\n\ | |
1341 | tree, and GDB will still find it.)\n\ | |
1342 | ")); | |
6eaaf48b | 1343 | } |
9e0b60a8 | 1344 | \f |
95298e72 | 1345 | |
ab821bc6 PA |
1346 | /* The current top level prompt, settable with "set prompt", and/or |
1347 | with the python `gdb.prompt_hook' hook. */ | |
1348 | static char *top_prompt; | |
9e0b60a8 | 1349 | |
ab821bc6 | 1350 | /* Access method for the GDB prompt string. */ |
95298e72 PM |
1351 | |
1352 | char * | |
ab821bc6 | 1353 | get_prompt (void) |
95298e72 | 1354 | { |
ab821bc6 | 1355 | return top_prompt; |
95298e72 PM |
1356 | } |
1357 | ||
ab821bc6 | 1358 | /* Set method for the GDB prompt string. */ |
95298e72 PM |
1359 | |
1360 | void | |
ab821bc6 | 1361 | set_prompt (const char *s) |
95298e72 | 1362 | { |
ab821bc6 | 1363 | char *p = xstrdup (s); |
95298e72 | 1364 | |
ab821bc6 PA |
1365 | xfree (top_prompt); |
1366 | top_prompt = p; | |
9e0b60a8 | 1367 | } |
9e0b60a8 | 1368 | \f |
c5aa993b | 1369 | |
b0abbc58 | 1370 | struct qt_args |
9e0b60a8 | 1371 | { |
b0abbc58 JJ |
1372 | char *args; |
1373 | int from_tty; | |
1374 | }; | |
9e0b60a8 | 1375 | |
54a012c9 PA |
1376 | /* Callback for iterate_over_inferiors. Kills or detaches the given |
1377 | inferior, depending on how we originally gained control of it. */ | |
1378 | ||
1379 | static int | |
1380 | kill_or_detach (struct inferior *inf, void *args) | |
1381 | { | |
1382 | struct qt_args *qt = args; | |
1383 | struct thread_info *thread; | |
1384 | ||
6c95b8df PA |
1385 | if (inf->pid == 0) |
1386 | return 0; | |
1387 | ||
b8fa0bfa PA |
1388 | thread = any_thread_of_process (inf->pid); |
1389 | if (thread != NULL) | |
9e0b60a8 | 1390 | { |
54a012c9 | 1391 | switch_to_thread (thread->ptid); |
c35b1492 PA |
1392 | |
1393 | /* Leave core files alone. */ | |
1394 | if (target_has_execution) | |
1395 | { | |
1396 | if (inf->attach_flag) | |
1397 | target_detach (qt->args, qt->from_tty); | |
1398 | else | |
1399 | target_kill (); | |
1400 | } | |
9e0b60a8 JM |
1401 | } |
1402 | ||
54a012c9 PA |
1403 | return 0; |
1404 | } | |
1405 | ||
b8fa0bfa PA |
1406 | /* Callback for iterate_over_inferiors. Prints info about what GDB |
1407 | will do to each inferior on a "quit". ARG points to a struct | |
1408 | ui_out where output is to be collected. */ | |
1409 | ||
1410 | static int | |
1411 | print_inferior_quit_action (struct inferior *inf, void *arg) | |
1412 | { | |
1413 | struct ui_file *stb = arg; | |
1414 | ||
6c95b8df PA |
1415 | if (inf->pid == 0) |
1416 | return 0; | |
1417 | ||
b8fa0bfa PA |
1418 | if (inf->attach_flag) |
1419 | fprintf_filtered (stb, | |
1420 | _("\tInferior %d [%s] will be detached.\n"), inf->num, | |
1421 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1422 | else | |
1423 | fprintf_filtered (stb, | |
1424 | _("\tInferior %d [%s] will be killed.\n"), inf->num, | |
1425 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1426 | ||
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | /* If necessary, make the user confirm that we should quit. Return | |
1431 | non-zero if we should quit, zero if we shouldn't. */ | |
1432 | ||
1433 | int | |
1434 | quit_confirm (void) | |
1435 | { | |
1436 | struct ui_file *stb; | |
1437 | struct cleanup *old_chain; | |
1438 | char *str; | |
1439 | int qr; | |
1440 | ||
1441 | /* Don't even ask if we're only debugging a core file inferior. */ | |
1442 | if (!have_live_inferiors ()) | |
1443 | return 1; | |
1444 | ||
1445 | /* Build the query string as a single string. */ | |
1446 | stb = mem_fileopen (); | |
1447 | old_chain = make_cleanup_ui_file_delete (stb); | |
1448 | ||
5a5d8ead AB |
1449 | fprintf_filtered (stb, _("A debugging session is active.\n\n")); |
1450 | iterate_over_inferiors (print_inferior_quit_action, stb); | |
1451 | fprintf_filtered (stb, _("\nQuit anyway? ")); | |
b8fa0bfa PA |
1452 | |
1453 | str = ui_file_xstrdup (stb, NULL); | |
1454 | make_cleanup (xfree, str); | |
1455 | ||
1456 | qr = query ("%s", str); | |
1457 | do_cleanups (old_chain); | |
1458 | return qr; | |
1459 | } | |
1460 | ||
b0abbc58 JJ |
1461 | /* Quit without asking for confirmation. */ |
1462 | ||
1463 | void | |
1464 | quit_force (char *args, int from_tty) | |
1465 | { | |
1466 | int exit_code = 0; | |
365c70b1 | 1467 | struct qt_args qt; |
2f9d54cf | 1468 | volatile struct gdb_exception ex; |
b0abbc58 JJ |
1469 | |
1470 | /* An optional expression may be used to cause gdb to terminate with the | |
371d5dec | 1471 | value of that expression. */ |
b0abbc58 JJ |
1472 | if (args) |
1473 | { | |
1474 | struct value *val = parse_and_eval (args); | |
1475 | ||
1476 | exit_code = (int) value_as_long (val); | |
1477 | } | |
4b0ad762 AS |
1478 | else if (return_child_result) |
1479 | exit_code = return_child_result_value; | |
b0abbc58 | 1480 | |
365c70b1 JJ |
1481 | qt.args = args; |
1482 | qt.from_tty = from_tty; | |
1483 | ||
2f9d54cf PA |
1484 | /* Wrappers to make the code below a bit more readable. */ |
1485 | #define DO_TRY \ | |
1486 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1487 | ||
1488 | #define DO_PRINT_EX \ | |
1489 | if (ex.reason < 0) \ | |
1490 | exception_print (gdb_stderr, ex) | |
1491 | ||
b0abbc58 | 1492 | /* We want to handle any quit errors and exit regardless. */ |
2f9d54cf PA |
1493 | |
1494 | /* Get out of tfind mode, and kill or detach all inferiors. */ | |
1495 | DO_TRY | |
1496 | { | |
1497 | disconnect_tracing (); | |
1498 | iterate_over_inferiors (kill_or_detach, &qt); | |
1499 | } | |
1500 | DO_PRINT_EX; | |
1501 | ||
1502 | /* Give all pushed targets a chance to do minimal cleanup, and pop | |
1503 | them all out. */ | |
1504 | DO_TRY | |
1505 | { | |
1506 | pop_all_targets (); | |
1507 | } | |
1508 | DO_PRINT_EX; | |
1509 | ||
1510 | /* Save the history information if it is appropriate to do so. */ | |
1511 | DO_TRY | |
1512 | { | |
35ab155d MB |
1513 | if (write_history_p && history_filename |
1514 | && input_from_terminal_p ()) | |
08b13bdd | 1515 | gdb_safe_append_history (); |
2f9d54cf PA |
1516 | } |
1517 | DO_PRINT_EX; | |
1518 | ||
1519 | /* Do any final cleanups before exiting. */ | |
1520 | DO_TRY | |
1521 | { | |
1522 | do_final_cleanups (all_cleanups ()); | |
1523 | } | |
1524 | DO_PRINT_EX; | |
b0abbc58 | 1525 | |
9e0b60a8 JM |
1526 | exit (exit_code); |
1527 | } | |
1528 | ||
698ba934 DJ |
1529 | /* Returns whether GDB is running on a terminal and input is |
1530 | currently coming from that terminal. */ | |
9e0b60a8 JM |
1531 | |
1532 | int | |
fba45db2 | 1533 | input_from_terminal_p (void) |
9e0b60a8 | 1534 | { |
c63a1f86 JK |
1535 | if (batch_flag) |
1536 | return 0; | |
1537 | ||
698ba934 DJ |
1538 | if (gdb_has_a_terminal () && instream == stdin) |
1539 | return 1; | |
1540 | ||
1541 | /* If INSTREAM is unset, and we are not in a user command, we | |
1542 | must be in Insight. That's like having a terminal, for our | |
1543 | purposes. */ | |
1544 | if (instream == NULL && !in_user_command) | |
1545 | return 1; | |
1546 | ||
1547 | return 0; | |
9e0b60a8 JM |
1548 | } |
1549 | \f | |
9e0b60a8 | 1550 | static void |
fba45db2 | 1551 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1552 | { |
dc7eb48e PA |
1553 | /* Can't call dont_repeat here because we're not necessarily reading |
1554 | from stdin. */ | |
1555 | *saved_command_line = 0; | |
9e0b60a8 JM |
1556 | } |
1557 | \f | |
1558 | /* Functions to manipulate command line editing control variables. */ | |
1559 | ||
1560 | /* Number of commands to print in each call to show_commands. */ | |
1561 | #define Hist_print 10 | |
d318976c | 1562 | void |
fba45db2 | 1563 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1564 | { |
1565 | /* Index for history commands. Relative to history_base. */ | |
1566 | int offset; | |
1567 | ||
1568 | /* Number of the history entry which we are planning to display next. | |
1569 | Relative to history_base. */ | |
1570 | static int num = 0; | |
1571 | ||
9e0b60a8 | 1572 | /* Print out some of the commands from the command history. */ |
9e0b60a8 JM |
1573 | |
1574 | if (args) | |
1575 | { | |
1576 | if (args[0] == '+' && args[1] == '\0') | |
1577 | /* "info editing +" should print from the stored position. */ | |
1578 | ; | |
1579 | else | |
1580 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1581 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1582 | } |
1583 | /* "show commands" means print the last Hist_print commands. */ | |
1584 | else | |
1585 | { | |
840a9a1f | 1586 | num = history_length - Hist_print; |
9e0b60a8 JM |
1587 | } |
1588 | ||
1589 | if (num < 0) | |
1590 | num = 0; | |
1591 | ||
1592 | /* If there are at least Hist_print commands, we want to display the last | |
1593 | Hist_print rather than, say, the last 6. */ | |
840a9a1f | 1594 | if (history_length - num < Hist_print) |
9e0b60a8 | 1595 | { |
840a9a1f | 1596 | num = history_length - Hist_print; |
9e0b60a8 JM |
1597 | if (num < 0) |
1598 | num = 0; | |
1599 | } | |
1600 | ||
840a9a1f PA |
1601 | for (offset = num; |
1602 | offset < num + Hist_print && offset < history_length; | |
1603 | offset++) | |
9e0b60a8 JM |
1604 | { |
1605 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1606 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1607 | } |
1608 | ||
1609 | /* The next command we want to display is the next one that we haven't | |
1610 | displayed yet. */ | |
1611 | num += Hist_print; | |
1612 | ||
1613 | /* If the user repeats this command with return, it should do what | |
1614 | "show commands +" does. This is unnecessary if arg is null, | |
1615 | because "show commands +" is not useful after "show commands". */ | |
1616 | if (from_tty && args) | |
1617 | { | |
1618 | args[0] = '+'; | |
1619 | args[1] = '\0'; | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | /* Called by do_setshow_command. */ | |
9e0b60a8 | 1624 | static void |
fba45db2 | 1625 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1626 | { |
840a9a1f PA |
1627 | /* Readline's history interface works with 'int', so it can only |
1628 | handle history sizes up to INT_MAX. The command itself is | |
1629 | uinteger, so UINT_MAX means "unlimited", but we only get that if | |
1630 | the user does "set history size 0" -- "set history size <UINT_MAX>" | |
1631 | throws out-of-range. */ | |
1632 | if (history_size_setshow_var > INT_MAX | |
1633 | && history_size_setshow_var != UINT_MAX) | |
9e0b60a8 | 1634 | { |
840a9a1f PA |
1635 | unsigned int new_value = history_size_setshow_var; |
1636 | ||
1637 | /* Restore previous value before throwing. */ | |
1638 | if (history_is_stifled ()) | |
1639 | history_size_setshow_var = history_max_entries; | |
1640 | else | |
1641 | history_size_setshow_var = UINT_MAX; | |
1642 | ||
1643 | error (_("integer %u out of range"), new_value); | |
9e0b60a8 | 1644 | } |
840a9a1f PA |
1645 | |
1646 | /* Commit the new value to readline's history. */ | |
1647 | if (history_size_setshow_var == UINT_MAX) | |
1648 | unstifle_history (); | |
883b9c6c | 1649 | else |
840a9a1f | 1650 | stifle_history (history_size_setshow_var); |
9e0b60a8 JM |
1651 | } |
1652 | ||
d318976c | 1653 | void |
fba45db2 | 1654 | set_history (char *args, int from_tty) |
9e0b60a8 | 1655 | { |
3e43a32a MS |
1656 | printf_unfiltered (_("\"set history\" must be followed " |
1657 | "by the name of a history subcommand.\n")); | |
635c7e8a | 1658 | help_list (sethistlist, "set history ", all_commands, gdb_stdout); |
9e0b60a8 JM |
1659 | } |
1660 | ||
d318976c | 1661 | void |
fba45db2 | 1662 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1663 | { |
1664 | cmd_show_list (showhistlist, from_tty, ""); | |
1665 | } | |
1666 | ||
371d5dec | 1667 | int info_verbose = 0; /* Default verbose msgs off. */ |
9e0b60a8 JM |
1668 | |
1669 | /* Called by do_setshow_command. An elaborate joke. */ | |
d318976c | 1670 | void |
fba45db2 | 1671 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 | 1672 | { |
6f937416 | 1673 | const char *cmdname = "verbose"; |
9e0b60a8 JM |
1674 | struct cmd_list_element *showcmd; |
1675 | ||
1676 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1427fe5e | 1677 | gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS); |
9e0b60a8 JM |
1678 | |
1679 | if (info_verbose) | |
1680 | { | |
1681 | c->doc = "Set verbose printing of informational messages."; | |
1682 | showcmd->doc = "Show verbose printing of informational messages."; | |
1683 | } | |
1684 | else | |
1685 | { | |
1686 | c->doc = "Set verbosity."; | |
1687 | showcmd->doc = "Show verbosity."; | |
1688 | } | |
1689 | } | |
1690 | ||
9e0b60a8 | 1691 | /* Init the history buffer. Note that we are called after the init file(s) |
371d5dec MS |
1692 | have been read so that the user can change the history file via his |
1693 | .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1694 | overrides all of this. */ | |
9e0b60a8 JM |
1695 | |
1696 | void | |
fba45db2 | 1697 | init_history (void) |
9e0b60a8 JM |
1698 | { |
1699 | char *tmpenv; | |
1700 | ||
1701 | tmpenv = getenv ("HISTSIZE"); | |
1702 | if (tmpenv) | |
840a9a1f PA |
1703 | { |
1704 | int var; | |
1705 | ||
1706 | var = atoi (tmpenv); | |
1707 | if (var < 0) | |
1708 | { | |
1709 | /* Prefer ending up with no history rather than overflowing | |
1710 | readline's history interface, which uses signed 'int' | |
1711 | everywhere. */ | |
1712 | var = 0; | |
1713 | } | |
1714 | ||
1715 | history_size_setshow_var = var; | |
1716 | } | |
1717 | /* If the init file hasn't set a size yet, pick the default. */ | |
1718 | else if (history_size_setshow_var == 0) | |
1719 | history_size_setshow_var = 256; | |
9e0b60a8 | 1720 | |
840a9a1f PA |
1721 | /* Note that unlike "set history size 0", "HISTSIZE=0" really sets |
1722 | the history size to 0... */ | |
1723 | stifle_history (history_size_setshow_var); | |
9e0b60a8 JM |
1724 | |
1725 | tmpenv = getenv ("GDBHISTFILE"); | |
1726 | if (tmpenv) | |
1b36a34b | 1727 | history_filename = xstrdup (tmpenv); |
c5aa993b JM |
1728 | else if (!history_filename) |
1729 | { | |
1730 | /* We include the current directory so that if the user changes | |
1731 | directories the file written will be the same as the one | |
1732 | that was read. */ | |
a0b3c4fd | 1733 | #ifdef __MSDOS__ |
eb2f494a | 1734 | /* No leading dots in file names are allowed on MSDOS. */ |
1754f103 MK |
1735 | history_filename = concat (current_directory, "/_gdb_history", |
1736 | (char *)NULL); | |
a0b3c4fd | 1737 | #else |
1754f103 MK |
1738 | history_filename = concat (current_directory, "/.gdb_history", |
1739 | (char *)NULL); | |
a0b3c4fd | 1740 | #endif |
c5aa993b | 1741 | } |
9e0b60a8 JM |
1742 | read_history (history_filename); |
1743 | } | |
1744 | ||
920d2a44 | 1745 | static void |
ab821bc6 PA |
1746 | show_prompt (struct ui_file *file, int from_tty, |
1747 | struct cmd_list_element *c, const char *value) | |
920d2a44 AC |
1748 | { |
1749 | fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value); | |
1750 | } | |
1751 | ||
1752 | static void | |
1753 | show_async_command_editing_p (struct ui_file *file, int from_tty, | |
1754 | struct cmd_list_element *c, const char *value) | |
1755 | { | |
3e43a32a MS |
1756 | fprintf_filtered (file, _("Editing of command lines as " |
1757 | "they are typed is %s.\n"), | |
920d2a44 AC |
1758 | value); |
1759 | } | |
1760 | ||
1761 | static void | |
1762 | show_annotation_level (struct ui_file *file, int from_tty, | |
1763 | struct cmd_list_element *c, const char *value) | |
1764 | { | |
1765 | fprintf_filtered (file, _("Annotation_level is %s.\n"), value); | |
1766 | } | |
1767 | ||
1768 | static void | |
1769 | show_exec_done_display_p (struct ui_file *file, int from_tty, | |
1770 | struct cmd_list_element *c, const char *value) | |
1771 | { | |
3e43a32a MS |
1772 | fprintf_filtered (file, _("Notification of completion for " |
1773 | "asynchronous execution commands is %s.\n"), | |
920d2a44 AC |
1774 | value); |
1775 | } | |
6dea1fbd | 1776 | |
8d551b02 DE |
1777 | /* New values of the "data-directory" parameter are staged here. */ |
1778 | static char *staged_gdb_datadir; | |
1779 | ||
6dea1fbd JK |
1780 | /* "set" command for the gdb_datadir configuration variable. */ |
1781 | ||
1782 | static void | |
1783 | set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c) | |
1784 | { | |
8d551b02 | 1785 | set_gdb_data_directory (staged_gdb_datadir); |
6dea1fbd JK |
1786 | observer_notify_gdb_datadir_changed (); |
1787 | } | |
1788 | ||
8d551b02 DE |
1789 | /* "show" command for the gdb_datadir configuration variable. */ |
1790 | ||
1791 | static void | |
1792 | show_gdb_datadir (struct ui_file *file, int from_tty, | |
1793 | struct cmd_list_element *c, const char *value) | |
1794 | { | |
1795 | fprintf_filtered (file, _("GDB's data directory is \"%s\".\n"), | |
1796 | gdb_datadir); | |
1797 | } | |
1798 | ||
97c85fc6 MB |
1799 | static void |
1800 | set_history_filename (char *args, int from_tty, struct cmd_list_element *c) | |
1801 | { | |
1802 | /* We include the current directory so that if the user changes | |
1803 | directories the file written will be the same as the one | |
1804 | that was read. */ | |
1805 | if (!IS_ABSOLUTE_PATH (history_filename)) | |
1806 | history_filename = reconcat (history_filename, current_directory, "/", | |
1807 | history_filename, (char *) NULL); | |
1808 | } | |
1809 | ||
9e0b60a8 | 1810 | static void |
fba45db2 | 1811 | init_main (void) |
9e0b60a8 | 1812 | { |
ab821bc6 PA |
1813 | /* Initialize the prompt to a simple "(gdb) " prompt or to whatever |
1814 | the DEFAULT_PROMPT is. */ | |
1815 | set_prompt (DEFAULT_PROMPT); | |
1816 | ||
362646f5 AC |
1817 | /* Set things up for annotation_level > 1, if the user ever decides |
1818 | to use it. */ | |
1819 | async_annotation_suffix = "prompt"; | |
362646f5 | 1820 | |
9e0b60a8 JM |
1821 | /* Set the important stuff up for command editing. */ |
1822 | command_editing_p = 1; | |
9e0b60a8 | 1823 | history_expansion_p = 0; |
452a569e | 1824 | write_history_p = 0; |
9e0b60a8 JM |
1825 | |
1826 | /* Setup important stuff for command line editing. */ | |
67c296a2 | 1827 | rl_completion_word_break_hook = gdb_completion_word_break_characters; |
38017ce8 | 1828 | rl_completion_entry_function = readline_line_completion_function; |
51065942 | 1829 | rl_completer_word_break_characters = default_word_break_characters (); |
d318976c | 1830 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); |
82083d6d | 1831 | rl_completion_display_matches_hook = cli_display_match_list; |
9e0b60a8 | 1832 | rl_readline_name = "gdb"; |
7cb3ec5e | 1833 | rl_terminal_name = getenv ("TERM"); |
9e0b60a8 | 1834 | |
467d8519 TT |
1835 | /* The name for this defun comes from Bash, where it originated. |
1836 | 15 is Control-o, the same binding this function has in Bash. */ | |
1837 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1838 | ||
4d28ad1e | 1839 | add_setshow_string_cmd ("prompt", class_support, |
ab821bc6 | 1840 | &top_prompt, |
3e43a32a MS |
1841 | _("Set gdb's prompt"), |
1842 | _("Show gdb's prompt"), | |
ab821bc6 PA |
1843 | NULL, NULL, |
1844 | show_prompt, | |
4d28ad1e | 1845 | &setlist, &showlist); |
9e0b60a8 | 1846 | |
1bedd215 | 1847 | add_com ("dont-repeat", class_support, dont_repeat_command, _("\ |
3e43a32a MS |
1848 | Don't repeat this command.\nPrimarily \ |
1849 | used inside of user-defined commands that should not be repeated when\n\ | |
1bedd215 | 1850 | hitting return.")); |
9e0b60a8 | 1851 | |
5bf193a2 AC |
1852 | add_setshow_boolean_cmd ("editing", class_support, |
1853 | &async_command_editing_p, _("\ | |
1854 | Set editing of command lines as they are typed."), _("\ | |
1855 | Show editing of command lines as they are typed."), _("\ | |
9e0b60a8 JM |
1856 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
1857 | Without an argument, command line editing is enabled. To edit, use\n\ | |
5bf193a2 AC |
1858 | EMACS-like or VI-like commands like control-P or ESC."), |
1859 | set_async_editing_command, | |
920d2a44 | 1860 | show_async_command_editing_p, |
5bf193a2 AC |
1861 | &setlist, &showlist); |
1862 | ||
1863 | add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\ | |
1864 | Set saving of the history record on exit."), _("\ | |
1865 | Show saving of the history record on exit."), _("\ | |
9e0b60a8 | 1866 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
5bf193a2 AC |
1867 | Without an argument, saving is enabled."), |
1868 | NULL, | |
920d2a44 | 1869 | show_write_history_p, |
5bf193a2 | 1870 | &sethistlist, &showhistlist); |
9e0b60a8 | 1871 | |
840a9a1f | 1872 | add_setshow_uinteger_cmd ("size", no_class, &history_size_setshow_var, _("\ |
4d28ad1e AC |
1873 | Set the size of the command history,"), _("\ |
1874 | Show the size of the command history,"), _("\ | |
f81d1120 PA |
1875 | ie. the number of previous commands to keep a record of.\n\ |
1876 | If set to \"unlimited\", the number of commands kept in the history\n\ | |
1877 | list is unlimited. This defaults to the value of the environment\n\ | |
1878 | variable \"HISTSIZE\", or to 256 if this variable is not set."), | |
883b9c6c YQ |
1879 | set_history_size_command, |
1880 | show_history_size, | |
1881 | &sethistlist, &showhistlist); | |
4d28ad1e AC |
1882 | |
1883 | add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\ | |
1884 | Set the filename in which to record the command history"), _("\ | |
1885 | Show the filename in which to record the command history"), _("\ | |
1886 | (the list of previous commands of which a record is kept)."), | |
97c85fc6 | 1887 | set_history_filename, |
920d2a44 | 1888 | show_history_filename, |
4d28ad1e | 1889 | &sethistlist, &showhistlist); |
9e0b60a8 | 1890 | |
e360902b | 1891 | add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\ |
5bf193a2 AC |
1892 | Set whether to confirm potentially dangerous operations."), _("\ |
1893 | Show whether to confirm potentially dangerous operations."), NULL, | |
1894 | NULL, | |
e360902b | 1895 | show_confirm, |
5bf193a2 | 1896 | &setlist, &showlist); |
9e0b60a8 | 1897 | |
85c07804 AC |
1898 | add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\ |
1899 | Set annotation_level."), _("\ | |
1900 | Show annotation_level."), _("\ | |
9e0b60a8 | 1901 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
85c07804 | 1902 | 2 == output annotated suitably for use by programs that control GDB."), |
ab821bc6 | 1903 | NULL, |
920d2a44 | 1904 | show_annotation_level, |
85c07804 | 1905 | &setlist, &showlist); |
362646f5 | 1906 | |
5bf193a2 AC |
1907 | add_setshow_boolean_cmd ("exec-done-display", class_support, |
1908 | &exec_done_display_p, _("\ | |
1909 | Set notification of completion for asynchronous execution commands."), _("\ | |
1910 | Show notification of completion for asynchronous execution commands."), _("\ | |
1911 | Use \"on\" to enable the notification, and \"off\" to disable it."), | |
1912 | NULL, | |
920d2a44 | 1913 | show_exec_done_display_p, |
5bf193a2 | 1914 | &setlist, &showlist); |
b14b1491 TT |
1915 | |
1916 | add_setshow_filename_cmd ("data-directory", class_maintenance, | |
8d551b02 | 1917 | &staged_gdb_datadir, _("Set GDB's data directory."), |
b14b1491 TT |
1918 | _("Show GDB's data directory."), |
1919 | _("\ | |
1920 | When set, GDB uses the specified path to search for data files."), | |
8d551b02 | 1921 | set_gdb_datadir, show_gdb_datadir, |
b14b1491 TT |
1922 | &setlist, |
1923 | &showlist); | |
9e0b60a8 | 1924 | } |
64cdedad EZ |
1925 | |
1926 | void | |
1927 | gdb_init (char *argv0) | |
1928 | { | |
1929 | if (pre_init_ui_hook) | |
1930 | pre_init_ui_hook (); | |
1931 | ||
371d5dec | 1932 | /* Run the init function of each source file. */ |
64cdedad | 1933 | |
64cdedad EZ |
1934 | #ifdef __MSDOS__ |
1935 | /* Make sure we return to the original directory upon exit, come | |
1936 | what may, since the OS doesn't do that for us. */ | |
1937 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1938 | #endif | |
1939 | ||
371d5dec MS |
1940 | init_cmd_lists (); /* This needs to be done first. */ |
1941 | initialize_targets (); /* Setup target_terminal macros for utils.c. */ | |
1942 | initialize_utils (); /* Make errors and warnings possible. */ | |
9dea9163 DE |
1943 | |
1944 | /* Here is where we call all the _initialize_foo routines. */ | |
64cdedad | 1945 | initialize_all_files (); |
9dea9163 | 1946 | |
6c95b8df PA |
1947 | /* This creates the current_program_space. Do this after all the |
1948 | _initialize_foo routines have had a chance to install their | |
1949 | per-sspace data keys. Also do this before | |
1950 | initialize_current_architecture is called, because it accesses | |
1951 | exec_bfd of the current program space. */ | |
1952 | initialize_progspace (); | |
1953 | initialize_inferiors (); | |
64cdedad EZ |
1954 | initialize_current_architecture (); |
1955 | init_cli_cmds(); | |
371d5dec | 1956 | init_main (); /* But that omits this file! Do it now. */ |
64cdedad | 1957 | |
0ea3f30e DJ |
1958 | initialize_stdin_serial (); |
1959 | ||
6a06d660 PP |
1960 | /* Take a snapshot of our tty state before readline/ncurses have had a chance |
1961 | to alter it. */ | |
1962 | set_initial_gdb_ttystate (); | |
1963 | ||
362646f5 | 1964 | async_init_signals (); |
64cdedad | 1965 | |
371d5dec MS |
1966 | /* We need a default language for parsing expressions, so simple |
1967 | things like "set width 0" won't fail if no language is explicitly | |
1968 | set in a config file or implicitly set by reading an executable | |
1969 | during startup. */ | |
64cdedad | 1970 | set_language (language_c); |
371d5dec | 1971 | expected_language = current_language; /* Don't warn about the change. */ |
64cdedad | 1972 | |
c378eb4e | 1973 | /* Allow another UI to initialize. If the UI fails to initialize, |
9a4105ab AC |
1974 | and it wants GDB to revert to the CLI, it should clear |
1975 | deprecated_init_ui_hook. */ | |
1976 | if (deprecated_init_ui_hook) | |
1977 | deprecated_init_ui_hook (argv0); | |
9dea9163 | 1978 | |
6dddc817 | 1979 | /* Python initialization, for example, can require various commands to be |
371d5dec MS |
1980 | installed. For example "info pretty-printer" needs the "info" |
1981 | prefix to be installed. Keep things simple and just do final | |
6dddc817 DE |
1982 | script initialization here. */ |
1983 | finish_ext_lang_initialization (); | |
64cdedad | 1984 | } |