Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
a752853e AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
637537d0 | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
a752853e | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "gdbcmd.h" | |
26 | #include "call-cmds.h" | |
210661e7 EZ |
27 | #include "cli/cli-cmds.h" |
28 | #include "cli/cli-script.h" | |
29 | #include "cli/cli-setshow.h" | |
18a642a1 | 30 | #include "cli/cli-decode.h" |
c906108c SS |
31 | #include "symtab.h" |
32 | #include "inferior.h" | |
60250e8b | 33 | #include "exceptions.h" |
042be3a9 | 34 | #include <signal.h> |
c906108c SS |
35 | #include "target.h" |
36 | #include "breakpoint.h" | |
37 | #include "gdbtypes.h" | |
38 | #include "expression.h" | |
39 | #include "value.h" | |
40 | #include "language.h" | |
c5aa993b | 41 | #include "terminal.h" /* For job_control. */ |
c906108c | 42 | #include "annotate.h" |
c5f0f3d0 | 43 | #include "completer.h" |
c906108c | 44 | #include "top.h" |
d4f3574e | 45 | #include "version.h" |
210661e7 | 46 | #include "serial.h" |
d16aafd8 | 47 | #include "doublest.h" |
f9c696d2 | 48 | #include "gdb_assert.h" |
c906108c SS |
49 | |
50 | /* readline include files */ | |
dbda9972 AC |
51 | #include "readline/readline.h" |
52 | #include "readline/history.h" | |
c906108c SS |
53 | |
54 | /* readline defines this. */ | |
55 | #undef savestring | |
56 | ||
57 | #include <sys/types.h> | |
c906108c | 58 | |
c2c6d25f | 59 | #include "event-top.h" |
c906108c SS |
60 | #include "gdb_string.h" |
61 | #include "gdb_stat.h" | |
62 | #include <ctype.h> | |
8b93c638 JM |
63 | #include "ui-out.h" |
64 | #include "cli-out.h" | |
c906108c | 65 | |
104c1213 JM |
66 | /* Default command line prompt. This is overriden in some configs. */ |
67 | ||
68 | #ifndef DEFAULT_PROMPT | |
69 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
70 | #endif |
71 | ||
72 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
73 | ||
74 | #ifndef GDBINIT_FILENAME | |
75 | #define GDBINIT_FILENAME ".gdbinit" | |
76 | #endif | |
77 | char gdbinit[] = GDBINIT_FILENAME; | |
78 | ||
79 | int inhibit_gdbinit = 0; | |
80 | ||
81 | /* If nonzero, and GDB has been configured to be able to use windows, | |
82 | attempt to open them upon startup. */ | |
83 | ||
f15ab4a7 | 84 | int use_windows = 0; |
c906108c | 85 | |
c906108c SS |
86 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
87 | ||
88 | /* Flag for whether we want all the "from_tty" gubbish printed. */ | |
89 | ||
c5aa993b | 90 | int caution = 1; /* Default is yes, sigh. */ |
c906108c | 91 | |
c906108c SS |
92 | /* stdio stream that command input is being read from. Set to stdin normally. |
93 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
94 | executing a user-defined command or interacting via a GUI. */ | |
95 | ||
96 | FILE *instream; | |
97 | ||
98 | /* Current working directory. */ | |
99 | ||
100 | char *current_directory; | |
101 | ||
102 | /* The directory name is actually stored here (usually). */ | |
103 | char gdb_dirbuf[1024]; | |
104 | ||
105 | /* Function to call before reading a command, if nonzero. | |
106 | The function receives two args: an input stream, | |
107 | and a prompt string. */ | |
108 | ||
507f3c78 | 109 | void (*window_hook) (FILE *, char *); |
c906108c SS |
110 | |
111 | int epoch_interface; | |
112 | int xgdb_verbose; | |
113 | ||
114 | /* gdb prints this when reading a command interactively */ | |
c5aa993b | 115 | static char *gdb_prompt_string; /* the global prompt string */ |
c906108c SS |
116 | |
117 | /* Buffer used for reading command lines, and the size | |
118 | allocated for it so far. */ | |
119 | ||
120 | char *line; | |
121 | int linesize = 100; | |
122 | ||
123 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 124 | affects things like recording into the command history, commands |
c906108c SS |
125 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
126 | whatever) can issue its own commands and also send along commands | |
127 | from the user, and have the user not notice that the user interface | |
128 | is issuing commands too. */ | |
129 | int server_command; | |
130 | ||
131 | /* Baud rate specified for talking to serial target systems. Default | |
132 | is left as -1, so targets can choose their own defaults. */ | |
133 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 | |
134 | or (unsigned int)-1. This is a Bad User Interface. */ | |
135 | ||
136 | int baud_rate = -1; | |
137 | ||
138 | /* Timeout limit for response from target. */ | |
139 | ||
ce808e91 AC |
140 | /* The default value has been changed many times over the years. It |
141 | was originally 5 seconds. But that was thought to be a long time | |
142 | to sit and wait, so it was changed to 2 seconds. That was thought | |
143 | to be plenty unless the connection was going through some terminal | |
144 | server or multiplexer or other form of hairy serial connection. | |
145 | ||
146 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
147 | it began being used in other remote-* targets. It appears that the | |
148 | default was changed to 20 seconds at that time, perhaps because the | |
85a453d5 | 149 | Renesas E7000 ICE didn't always respond in a timely manner. |
ce808e91 AC |
150 | |
151 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
152 | 20 seconds is far worse. This demonstrates the difficulty of using | |
153 | a single variable for all protocol timeouts. | |
154 | ||
155 | As remote.c is used much more than remote-e7000.c, it was changed | |
156 | back to 2 seconds in 1999. */ | |
157 | ||
158 | int remote_timeout = 2; | |
c906108c SS |
159 | |
160 | /* Non-zero tells remote* modules to output debugging info. */ | |
161 | ||
162 | int remote_debug = 0; | |
163 | ||
43ff13b4 JM |
164 | /* Non-zero means the target is running. Note: this is different from |
165 | saying that there is an active target and we are stopped at a | |
166 | breakpoint, for instance. This is a real indicator whether the | |
167 | target is off and running, which gdb is doing something else. */ | |
168 | int target_executing = 0; | |
169 | ||
c906108c SS |
170 | /* Level of control structure. */ |
171 | static int control_level; | |
172 | ||
6dd77b81 RH |
173 | /* Sbrk location on entry to main. Used for statistics only. */ |
174 | #ifdef HAVE_SBRK | |
175 | char *lim_at_start; | |
176 | #endif | |
177 | ||
c906108c SS |
178 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ |
179 | ||
180 | #ifndef STOP_SIGNAL | |
181 | #ifdef SIGTSTP | |
182 | #define STOP_SIGNAL SIGTSTP | |
a14ed312 | 183 | static void stop_sig (int); |
c906108c SS |
184 | #endif |
185 | #endif | |
186 | ||
c906108c SS |
187 | /* Hooks for alternate command interfaces. */ |
188 | ||
189 | /* Called after most modules have been initialized, but before taking users | |
1ad24239 KS |
190 | command file. |
191 | ||
192 | If the UI fails to initialize and it wants GDB to continue | |
193 | using the default UI, then it should clear this hook before returning. */ | |
c906108c | 194 | |
9a4105ab | 195 | void (*deprecated_init_ui_hook) (char *argv0); |
7a292a7a SS |
196 | |
197 | /* This hook is called from within gdb's many mini-event loops which could | |
198 | steal control from a real user interface's event loop. It returns | |
199 | non-zero if the user is requesting a detach, zero otherwise. */ | |
200 | ||
98bbd631 | 201 | int (*deprecated_ui_loop_hook) (int); |
c906108c SS |
202 | |
203 | /* Called instead of command_loop at top level. Can be invoked via | |
b5a2688f | 204 | throw_exception(). */ |
c906108c | 205 | |
9a4105ab | 206 | void (*deprecated_command_loop_hook) (void); |
c906108c SS |
207 | |
208 | ||
c906108c SS |
209 | /* Called from print_frame_info to list the line we stopped in. */ |
210 | ||
9a4105ab AC |
211 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, int line, |
212 | int stopline, int noerror); | |
c906108c SS |
213 | /* Replaces most of query. */ |
214 | ||
9a4105ab | 215 | int (*deprecated_query_hook) (const char *, va_list); |
c906108c SS |
216 | |
217 | /* Replaces most of warning. */ | |
218 | ||
9a4105ab | 219 | void (*deprecated_warning_hook) (const char *, va_list); |
c906108c | 220 | |
9a4105ab AC |
221 | /* These three functions support getting lines of text from the user. |
222 | They are used in sequence. First deprecated_readline_begin_hook is | |
223 | called with a text string that might be (for example) a message for | |
224 | the user to type in a sequence of commands to be executed at a | |
225 | breakpoint. If this function calls back to a GUI, it might take | |
226 | this opportunity to pop up a text interaction window with this | |
227 | message. Next, deprecated_readline_hook is called with a prompt | |
228 | that is emitted prior to collecting the user input. It can be | |
229 | called multiple times. Finally, deprecated_readline_end_hook is | |
230 | called to notify the GUI that we are done with the interaction | |
231 | window and it can close it. */ | |
c906108c | 232 | |
9a4105ab AC |
233 | void (*deprecated_readline_begin_hook) (char *, ...); |
234 | char *(*deprecated_readline_hook) (char *); | |
235 | void (*deprecated_readline_end_hook) (void); | |
c906108c SS |
236 | |
237 | /* Called as appropriate to notify the interface of the specified breakpoint | |
238 | conditions. */ | |
239 | ||
9a4105ab AC |
240 | void (*deprecated_create_breakpoint_hook) (struct breakpoint * bpt); |
241 | void (*deprecated_delete_breakpoint_hook) (struct breakpoint * bpt); | |
242 | void (*deprecated_modify_breakpoint_hook) (struct breakpoint * bpt); | |
c906108c | 243 | |
6426a772 JM |
244 | /* Called as appropriate to notify the interface that we have attached |
245 | to or detached from an already running process. */ | |
246 | ||
9a4105ab AC |
247 | void (*deprecated_attach_hook) (void); |
248 | void (*deprecated_detach_hook) (void); | |
6426a772 | 249 | |
c906108c SS |
250 | /* Called during long calculations to allow GUI to repair window damage, and to |
251 | check for stop buttons, etc... */ | |
252 | ||
9a4105ab | 253 | void (*deprecated_interactive_hook) (void); |
c906108c SS |
254 | |
255 | /* Called when the registers have changed, as a hint to a GUI | |
256 | to minimize window update. */ | |
257 | ||
9a4105ab | 258 | void (*deprecated_registers_changed_hook) (void); |
c906108c SS |
259 | |
260 | /* Tell the GUI someone changed the register REGNO. -1 means | |
261 | that the caller does not know which register changed or | |
c5aa993b | 262 | that several registers have changed (see value_assign). */ |
9a4105ab | 263 | void (*deprecated_register_changed_hook) (int regno); |
c906108c SS |
264 | |
265 | /* Tell the GUI someone changed LEN bytes of memory at ADDR */ | |
9a4105ab | 266 | void (*deprecated_memory_changed_hook) (CORE_ADDR addr, int len); |
c906108c SS |
267 | |
268 | /* Called when going to wait for the target. Usually allows the GUI to run | |
269 | while waiting for target events. */ | |
270 | ||
9a4105ab AC |
271 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, |
272 | struct target_waitstatus * status); | |
c906108c SS |
273 | |
274 | /* Used by UI as a wrapper around command execution. May do various things | |
275 | like enabling/disabling buttons, etc... */ | |
276 | ||
9a4105ab AC |
277 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, char *cmd, |
278 | int from_tty); | |
c906108c | 279 | |
96baa820 JM |
280 | /* Called after a `set' command has finished. Is only run if the |
281 | `set' command succeeded. */ | |
282 | ||
9a4105ab | 283 | void (*deprecated_set_hook) (struct cmd_list_element * c); |
96baa820 | 284 | |
c906108c SS |
285 | /* Called when the current thread changes. Argument is thread id. */ |
286 | ||
9a4105ab | 287 | void (*deprecated_context_hook) (int id); |
c906108c SS |
288 | |
289 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
290 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
291 | ||
c40d0d10 | 292 | void (*deprecated_error_hook) (void); |
11cf8741 | 293 | |
c906108c SS |
294 | /* Handler for SIGHUP. */ |
295 | ||
296 | #ifdef SIGHUP | |
392a587b | 297 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
298 | gdb to use the event loop as the default command loop and we merge |
299 | event-top.c into this file, top.c */ | |
300 | /* static */ int | |
d0c8cdfb | 301 | quit_cover (void *s) |
c906108c | 302 | { |
c5aa993b JM |
303 | caution = 0; /* Throw caution to the wind -- we're exiting. |
304 | This prevents asking the user dumb questions. */ | |
305 | quit_command ((char *) 0, 0); | |
c906108c SS |
306 | return 0; |
307 | } | |
308 | #endif /* defined SIGHUP */ | |
309 | \f | |
310 | /* Line number we are currently in in a file which is being sourced. */ | |
392a587b | 311 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
312 | gdb to use the event loop as the default command loop and we merge |
313 | event-top.c into this file, top.c */ | |
314 | /* static */ int source_line_number; | |
c906108c SS |
315 | |
316 | /* Name of the file we are sourcing. */ | |
392a587b | 317 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
318 | gdb to use the event loop as the default command loop and we merge |
319 | event-top.c into this file, top.c */ | |
320 | /* static */ char *source_file_name; | |
c906108c | 321 | |
c906108c SS |
322 | /* Clean up on error during a "source" command (or execution of a |
323 | user-defined command). */ | |
324 | ||
d318976c | 325 | void |
e41a3b1a | 326 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
327 | { |
328 | /* Restore the previous input stream. */ | |
329 | instream = stream; | |
330 | } | |
331 | ||
332 | /* Read commands from STREAM. */ | |
333 | void | |
fba45db2 | 334 | read_command_file (FILE *stream) |
c906108c SS |
335 | { |
336 | struct cleanup *cleanups; | |
337 | ||
e41a3b1a | 338 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 339 | instream = stream; |
c5aa993b | 340 | command_loop (); |
c906108c SS |
341 | do_cleanups (cleanups); |
342 | } | |
343 | \f | |
507f3c78 | 344 | void (*pre_init_ui_hook) (void); |
c906108c | 345 | |
e41a3b1a AC |
346 | #ifdef __MSDOS__ |
347 | void | |
348 | do_chdir_cleanup (void *old_dir) | |
349 | { | |
350 | chdir (old_dir); | |
b8c9b27d | 351 | xfree (old_dir); |
e41a3b1a AC |
352 | } |
353 | #endif | |
354 | ||
d318976c FN |
355 | /* Execute the line P as a command. |
356 | Pass FROM_TTY as second argument to the defining function. */ | |
c906108c | 357 | |
d318976c FN |
358 | void |
359 | execute_command (char *p, int from_tty) | |
c906108c | 360 | { |
52f0bd74 AC |
361 | struct cmd_list_element *c; |
362 | enum language flang; | |
d318976c FN |
363 | static int warned = 0; |
364 | char *line; | |
67e1e03a | 365 | |
d318976c | 366 | free_all_values (); |
c906108c | 367 | |
d318976c FN |
368 | /* Force cleanup of any alloca areas if using C alloca instead of |
369 | a builtin alloca. */ | |
370 | alloca (0); | |
c906108c | 371 | |
d318976c FN |
372 | /* This can happen when command_line_input hits end of file. */ |
373 | if (p == NULL) | |
374 | return; | |
c906108c | 375 | |
d318976c | 376 | serial_log_command (p); |
8b93c638 | 377 | |
d318976c FN |
378 | while (*p == ' ' || *p == '\t') |
379 | p++; | |
380 | if (*p) | |
8b93c638 | 381 | { |
d318976c FN |
382 | char *arg; |
383 | line = p; | |
8b93c638 | 384 | |
d318976c | 385 | c = lookup_cmd (&p, cmdlist, "", 0, 1); |
8b93c638 | 386 | |
d318976c FN |
387 | /* If the target is running, we allow only a limited set of |
388 | commands. */ | |
362646f5 | 389 | if (target_can_async_p () && target_executing) |
d8fe84e3 EZ |
390 | if (strcmp (c->name, "help") != 0 |
391 | && strcmp (c->name, "pwd") != 0 | |
392 | && strcmp (c->name, "show") != 0 | |
393 | && strcmp (c->name, "stop") != 0) | |
d318976c | 394 | error ("Cannot execute this command while the target is running."); |
8b93c638 | 395 | |
d318976c FN |
396 | /* Pass null arg rather than an empty one. */ |
397 | arg = *p ? p : 0; | |
8b93c638 | 398 | |
9f60d481 AC |
399 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
400 | while the is_complete_command(cfunc) test is just plain | |
401 | bogus. They should both be replaced by a test of the form | |
402 | c->strip_trailing_white_space_p. */ | |
403 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
404 | can't be replaced with func. This is because it is the | |
405 | cfunc, and not the func, that has the value that the | |
406 | is_complete_command hack is testing for. */ | |
407 | /* Clear off trailing whitespace, except for set and complete | |
408 | command. */ | |
d318976c FN |
409 | if (arg |
410 | && c->type != set_cmd | |
bbaca940 | 411 | && !is_complete_command (c)) |
8b93c638 | 412 | { |
d318976c FN |
413 | p = arg + strlen (arg) - 1; |
414 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
415 | p--; | |
416 | *(p + 1) = '\0'; | |
8b93c638 JM |
417 | } |
418 | ||
d318976c | 419 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 420 | execute_cmd_pre_hook (c); |
c906108c | 421 | |
d318976c FN |
422 | if (c->flags & DEPRECATED_WARN_USER) |
423 | deprecated_cmd_warning (&line); | |
c906108c | 424 | |
d318976c FN |
425 | if (c->class == class_user) |
426 | execute_user_command (c, arg); | |
427 | else if (c->type == set_cmd || c->type == show_cmd) | |
428 | do_setshow_command (arg, from_tty & caution, c); | |
f436dd25 | 429 | else if (!cmd_func_p (c)) |
d318976c | 430 | error ("That is not a command, just a help topic."); |
9a4105ab AC |
431 | else if (deprecated_call_command_hook) |
432 | deprecated_call_command_hook (c, arg, from_tty & caution); | |
d318976c | 433 | else |
f436dd25 | 434 | cmd_func (c, arg, from_tty & caution); |
d318976c FN |
435 | |
436 | /* If this command has been post-hooked, run the hook last. */ | |
5913bcb0 | 437 | execute_cmd_post_hook (c); |
c906108c | 438 | |
c906108c SS |
439 | } |
440 | ||
d318976c FN |
441 | /* Tell the user if the language has changed (except first time). */ |
442 | if (current_language != expected_language) | |
c906108c | 443 | { |
d318976c | 444 | if (language_mode == language_mode_auto) |
c906108c | 445 | { |
d318976c | 446 | language_info (1); /* Print what changed. */ |
c906108c | 447 | } |
d318976c | 448 | warned = 0; |
c906108c SS |
449 | } |
450 | ||
d318976c FN |
451 | /* Warn the user if the working language does not match the |
452 | language of the current frame. Only warn the user if we are | |
453 | actually running the program, i.e. there is a stack. */ | |
454 | /* FIXME: This should be cacheing the frame and only running when | |
455 | the frame changes. */ | |
456 | ||
457 | if (target_has_stack) | |
c906108c | 458 | { |
d318976c FN |
459 | flang = get_frame_language (); |
460 | if (!warned | |
461 | && flang != language_unknown | |
462 | && flang != current_language->la_language) | |
c906108c | 463 | { |
d318976c FN |
464 | printf_filtered ("%s\n", lang_frame_mismatch_warn); |
465 | warned = 1; | |
c906108c | 466 | } |
c906108c SS |
467 | } |
468 | } | |
469 | ||
d318976c FN |
470 | /* Read commands from `instream' and execute them |
471 | until end of file or error reading instream. */ | |
c906108c | 472 | |
d318976c FN |
473 | void |
474 | command_loop (void) | |
c906108c | 475 | { |
d318976c FN |
476 | struct cleanup *old_chain; |
477 | char *command; | |
478 | int stdin_is_tty = ISATTY (stdin); | |
479 | long time_at_cmd_start; | |
480 | #ifdef HAVE_SBRK | |
481 | long space_at_cmd_start = 0; | |
482 | #endif | |
483 | extern int display_time; | |
484 | extern int display_space; | |
c5aa993b | 485 | |
d318976c FN |
486 | while (instream && !feof (instream)) |
487 | { | |
d318976c FN |
488 | if (window_hook && instream == stdin) |
489 | (*window_hook) (instream, get_prompt ()); | |
c906108c | 490 | |
d318976c FN |
491 | quit_flag = 0; |
492 | if (instream == stdin && stdin_is_tty) | |
493 | reinitialize_more_filter (); | |
494 | old_chain = make_cleanup (null_cleanup, 0); | |
c906108c | 495 | |
d318976c FN |
496 | /* Get a command-line. This calls the readline package. */ |
497 | command = command_line_input (instream == stdin ? | |
498 | get_prompt () : (char *) NULL, | |
499 | instream == stdin, "prompt"); | |
d318976c FN |
500 | if (command == 0) |
501 | return; | |
c906108c | 502 | |
d318976c | 503 | time_at_cmd_start = get_run_time (); |
c906108c | 504 | |
d318976c | 505 | if (display_space) |
9e0b60a8 | 506 | { |
d318976c | 507 | #ifdef HAVE_SBRK |
d318976c | 508 | char *lim = (char *) sbrk (0); |
6dd77b81 | 509 | space_at_cmd_start = lim - lim_at_start; |
9e0b60a8 | 510 | #endif |
d318976c | 511 | } |
9e0b60a8 | 512 | |
d318976c FN |
513 | execute_command (command, instream == stdin); |
514 | /* Do any commands attached to breakpoint we stopped at. */ | |
515 | bpstat_do_actions (&stop_bpstat); | |
516 | do_cleanups (old_chain); | |
9e0b60a8 | 517 | |
d318976c | 518 | if (display_time) |
9e0b60a8 | 519 | { |
d318976c | 520 | long cmd_time = get_run_time () - time_at_cmd_start; |
9e0b60a8 | 521 | |
d318976c FN |
522 | printf_unfiltered ("Command execution time: %ld.%06ld\n", |
523 | cmd_time / 1000000, cmd_time % 1000000); | |
9e0b60a8 | 524 | } |
9e0b60a8 | 525 | |
d318976c | 526 | if (display_space) |
9e0b60a8 | 527 | { |
d318976c | 528 | #ifdef HAVE_SBRK |
d318976c | 529 | char *lim = (char *) sbrk (0); |
6dd77b81 | 530 | long space_now = lim - lim_at_start; |
d318976c FN |
531 | long space_diff = space_now - space_at_cmd_start; |
532 | ||
533 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", | |
534 | space_now, | |
535 | (space_diff >= 0 ? '+' : '-'), | |
536 | space_diff); | |
537 | #endif | |
9e0b60a8 | 538 | } |
9e0b60a8 | 539 | } |
9e0b60a8 | 540 | } |
9e0b60a8 | 541 | |
d318976c FN |
542 | /* Read commands from `instream' and execute them until end of file or |
543 | error reading instream. This command loop doesnt care about any | |
544 | such things as displaying time and space usage. If the user asks | |
545 | for those, they won't work. */ | |
546 | void | |
547 | simplified_command_loop (char *(*read_input_func) (char *), | |
548 | void (*execute_command_func) (char *, int)) | |
9e0b60a8 | 549 | { |
d318976c FN |
550 | struct cleanup *old_chain; |
551 | char *command; | |
552 | int stdin_is_tty = ISATTY (stdin); | |
9e0b60a8 | 553 | |
d318976c | 554 | while (instream && !feof (instream)) |
9e0b60a8 | 555 | { |
d318976c FN |
556 | quit_flag = 0; |
557 | if (instream == stdin && stdin_is_tty) | |
558 | reinitialize_more_filter (); | |
559 | old_chain = make_cleanup (null_cleanup, 0); | |
560 | ||
561 | /* Get a command-line. */ | |
562 | command = (*read_input_func) (instream == stdin ? | |
563 | get_prompt () : (char *) NULL); | |
9e0b60a8 | 564 | |
d318976c FN |
565 | if (command == 0) |
566 | return; | |
9e0b60a8 | 567 | |
d318976c | 568 | (*execute_command_func) (command, instream == stdin); |
9e0b60a8 | 569 | |
d318976c FN |
570 | /* Do any commands attached to breakpoint we stopped at. */ |
571 | bpstat_do_actions (&stop_bpstat); | |
9e0b60a8 | 572 | |
d318976c | 573 | do_cleanups (old_chain); |
c5aa993b | 574 | } |
9e0b60a8 | 575 | } |
d318976c FN |
576 | \f |
577 | /* Commands call this if they do not want to be repeated by null lines. */ | |
9e0b60a8 | 578 | |
d318976c FN |
579 | void |
580 | dont_repeat (void) | |
9e0b60a8 | 581 | { |
d318976c FN |
582 | if (server_command) |
583 | return; | |
9e0b60a8 | 584 | |
d318976c FN |
585 | /* If we aren't reading from standard input, we are saving the last |
586 | thing read from stdin in line and don't want to delete it. Null lines | |
587 | won't repeat here in any case. */ | |
588 | if (instream == stdin) | |
589 | *line = 0; | |
9e0b60a8 | 590 | } |
d318976c FN |
591 | \f |
592 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 593 | |
d318976c FN |
594 | It prints PROMPT_ARG once at the start. |
595 | Action is compatible with "readline", e.g. space for the result is | |
596 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 597 | |
d318976c FN |
598 | A NULL return means end of file. */ |
599 | char * | |
600 | gdb_readline (char *prompt_arg) | |
9e0b60a8 | 601 | { |
d318976c FN |
602 | int c; |
603 | char *result; | |
604 | int input_index = 0; | |
605 | int result_size = 80; | |
9e0b60a8 | 606 | |
d318976c | 607 | if (prompt_arg) |
9e0b60a8 | 608 | { |
d318976c FN |
609 | /* Don't use a _filtered function here. It causes the assumed |
610 | character position to be off, since the newline we read from | |
611 | the user is not accounted for. */ | |
612 | fputs_unfiltered (prompt_arg, gdb_stdout); | |
9e0b60a8 JM |
613 | gdb_flush (gdb_stdout); |
614 | } | |
615 | ||
d318976c | 616 | result = (char *) xmalloc (result_size); |
9e0b60a8 JM |
617 | |
618 | while (1) | |
619 | { | |
d318976c FN |
620 | /* Read from stdin if we are executing a user defined command. |
621 | This is the right thing for prompt_for_continue, at least. */ | |
622 | c = fgetc (instream ? instream : stdin); | |
9e0b60a8 | 623 | |
d318976c | 624 | if (c == EOF) |
9e0b60a8 | 625 | { |
d318976c FN |
626 | if (input_index > 0) |
627 | /* The last line does not end with a newline. Return it, and | |
628 | if we are called again fgetc will still return EOF and | |
629 | we'll return NULL then. */ | |
9e0b60a8 | 630 | break; |
b8c9b27d | 631 | xfree (result); |
d318976c | 632 | return NULL; |
9e0b60a8 | 633 | } |
c5aa993b | 634 | |
d318976c | 635 | if (c == '\n') |
9e0b60a8 | 636 | { |
d318976c FN |
637 | if (input_index > 0 && result[input_index - 1] == '\r') |
638 | input_index--; | |
639 | break; | |
9e0b60a8 | 640 | } |
9e0b60a8 | 641 | |
d318976c FN |
642 | result[input_index++] = c; |
643 | while (input_index >= result_size) | |
9e0b60a8 | 644 | { |
d318976c FN |
645 | result_size *= 2; |
646 | result = (char *) xrealloc (result, result_size); | |
9e0b60a8 | 647 | } |
9e0b60a8 JM |
648 | } |
649 | ||
d318976c FN |
650 | result[input_index++] = '\0'; |
651 | return result; | |
9e0b60a8 JM |
652 | } |
653 | ||
d318976c FN |
654 | /* Variables which control command line editing and history |
655 | substitution. These variables are given default values at the end | |
656 | of this file. */ | |
657 | static int command_editing_p; | |
658 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
659 | gdb to use the event loop as the default command loop and we merge | |
660 | event-top.c into this file, top.c */ | |
661 | /* static */ int history_expansion_p; | |
662 | static int write_history_p; | |
663 | static int history_size; | |
664 | static char *history_filename; | |
9e0b60a8 | 665 | |
b4f5539f TT |
666 | /* This is like readline(), but it has some gdb-specific behavior. |
667 | gdb can use readline in both the synchronous and async modes during | |
668 | a single gdb invocation. At the ordinary top-level prompt we might | |
669 | be using the async readline. That means we can't use | |
670 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
671 | However, for a secondary prompt (" >", such as occurs during a | |
672 | `define'), gdb just calls readline() directly, running it in | |
673 | synchronous mode. So for operate-and-get-next to work in this | |
674 | situation, we have to switch the hooks around. That is what | |
675 | gdb_readline_wrapper is for. */ | |
676 | char * | |
677 | gdb_readline_wrapper (char *prompt) | |
678 | { | |
679 | /* Set the hook that works in this case. */ | |
362646f5 | 680 | if (after_char_processing_hook) |
b4f5539f TT |
681 | { |
682 | rl_pre_input_hook = (Function *) after_char_processing_hook; | |
683 | after_char_processing_hook = NULL; | |
684 | } | |
685 | ||
686 | return readline (prompt); | |
687 | } | |
688 | ||
9e0b60a8 | 689 | \f |
d318976c FN |
690 | #ifdef STOP_SIGNAL |
691 | static void | |
692 | stop_sig (int signo) | |
9e0b60a8 | 693 | { |
d318976c FN |
694 | #if STOP_SIGNAL == SIGTSTP |
695 | signal (SIGTSTP, SIG_DFL); | |
46711df8 MK |
696 | #if HAVE_SIGPROCMASK |
697 | { | |
698 | sigset_t zero; | |
699 | ||
700 | sigemptyset (&zero); | |
701 | sigprocmask (SIG_SETMASK, &zero, 0); | |
702 | } | |
703 | #elif HAVE_SIGSETMASK | |
d318976c | 704 | sigsetmask (0); |
46711df8 | 705 | #endif |
d318976c FN |
706 | kill (getpid (), SIGTSTP); |
707 | signal (SIGTSTP, stop_sig); | |
708 | #else | |
709 | signal (STOP_SIGNAL, stop_sig); | |
710 | #endif | |
711 | printf_unfiltered ("%s", get_prompt ()); | |
712 | gdb_flush (gdb_stdout); | |
9e0b60a8 | 713 | |
d318976c FN |
714 | /* Forget about any previous command -- null line now will do nothing. */ |
715 | dont_repeat (); | |
9e0b60a8 | 716 | } |
d318976c | 717 | #endif /* STOP_SIGNAL */ |
9e0b60a8 | 718 | |
d318976c | 719 | /* Initialize signal handlers. */ |
64cdedad EZ |
720 | static void |
721 | float_handler (int signo) | |
722 | { | |
723 | /* This message is based on ANSI C, section 4.7. Note that integer | |
724 | divide by zero causes this, so "float" is a misnomer. */ | |
725 | signal (SIGFPE, float_handler); | |
726 | error ("Erroneous arithmetic operation."); | |
727 | } | |
728 | ||
9e0b60a8 | 729 | static void |
d318976c | 730 | do_nothing (int signo) |
9e0b60a8 | 731 | { |
d318976c FN |
732 | /* Under System V the default disposition of a signal is reinstated after |
733 | the signal is caught and delivered to an application process. On such | |
734 | systems one must restore the replacement signal handler if one wishes | |
735 | to continue handling the signal in one's program. On BSD systems this | |
736 | is not needed but it is harmless, and it simplifies the code to just do | |
737 | it unconditionally. */ | |
738 | signal (signo, do_nothing); | |
9e0b60a8 JM |
739 | } |
740 | ||
467d8519 TT |
741 | /* The current saved history number from operate-and-get-next. |
742 | This is -1 if not valid. */ | |
743 | static int operate_saved_history = -1; | |
744 | ||
745 | /* This is put on the appropriate hook and helps operate-and-get-next | |
746 | do its work. */ | |
b9362cc7 | 747 | static void |
5ae5f592 | 748 | gdb_rl_operate_and_get_next_completion (void) |
467d8519 TT |
749 | { |
750 | int delta = where_history () - operate_saved_history; | |
751 | /* The `key' argument to rl_get_previous_history is ignored. */ | |
752 | rl_get_previous_history (delta, 0); | |
753 | operate_saved_history = -1; | |
754 | ||
755 | /* readline doesn't automatically update the display for us. */ | |
756 | rl_redisplay (); | |
757 | ||
758 | after_char_processing_hook = NULL; | |
759 | rl_pre_input_hook = NULL; | |
760 | } | |
761 | ||
762 | /* This is a gdb-local readline command handler. It accepts the | |
763 | current command line (like RET does) and, if this command was taken | |
764 | from the history, arranges for the next command in the history to | |
765 | appear on the command line when the prompt returns. | |
766 | We ignore the arguments. */ | |
767 | static int | |
768 | gdb_rl_operate_and_get_next (int count, int key) | |
769 | { | |
b5686e99 MK |
770 | int where; |
771 | ||
362646f5 AC |
772 | /* Use the async hook. */ |
773 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
467d8519 | 774 | |
b5686e99 MK |
775 | /* Find the current line, and find the next line to use. */ |
776 | where = where_history(); | |
777 | ||
778 | /* FIXME: kettenis/20020817: max_input_history is renamed into | |
779 | history_max_entries in readline-4.2. When we do a new readline | |
780 | import, we should probably change it here too, even though | |
781 | readline maintains backwards compatibility for now by still | |
782 | defining max_input_history. */ | |
783 | if ((history_is_stifled () && (history_length >= max_input_history)) || | |
784 | (where >= history_length - 1)) | |
785 | operate_saved_history = where; | |
786 | else | |
787 | operate_saved_history = where + 1; | |
788 | ||
467d8519 TT |
789 | return rl_newline (1, key); |
790 | } | |
791 | \f | |
d318976c FN |
792 | /* Read one line from the command input stream `instream' |
793 | into the local static buffer `linebuffer' (whose current length | |
794 | is `linelength'). | |
795 | The buffer is made bigger as necessary. | |
796 | Returns the address of the start of the line. | |
9e0b60a8 | 797 | |
d318976c | 798 | NULL is returned for end of file. |
9e0b60a8 | 799 | |
d318976c FN |
800 | *If* the instream == stdin & stdin is a terminal, the line read |
801 | is copied into the file line saver (global var char *line, | |
802 | length linesize) so that it can be duplicated. | |
9e0b60a8 | 803 | |
d318976c FN |
804 | This routine either uses fancy command line editing or |
805 | simple input as the user has requested. */ | |
10689f25 | 806 | |
d318976c FN |
807 | char * |
808 | command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) | |
9e0b60a8 | 809 | { |
d318976c FN |
810 | static char *linebuffer = 0; |
811 | static unsigned linelength = 0; | |
52f0bd74 | 812 | char *p; |
d318976c FN |
813 | char *p1; |
814 | char *rl; | |
815 | char *local_prompt = prompt_arg; | |
816 | char *nline; | |
817 | char got_eof = 0; | |
818 | ||
819 | /* The annotation suffix must be non-NULL. */ | |
820 | if (annotation_suffix == NULL) | |
821 | annotation_suffix = ""; | |
9e0b60a8 | 822 | |
d318976c FN |
823 | if (annotation_level > 1 && instream == stdin) |
824 | { | |
825 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
826 | + strlen (annotation_suffix) + 40); | |
827 | if (prompt_arg == NULL) | |
828 | local_prompt[0] = '\0'; | |
829 | else | |
830 | strcpy (local_prompt, prompt_arg); | |
831 | strcat (local_prompt, "\n\032\032"); | |
832 | strcat (local_prompt, annotation_suffix); | |
833 | strcat (local_prompt, "\n"); | |
834 | } | |
9e0b60a8 | 835 | |
d318976c | 836 | if (linebuffer == 0) |
9e0b60a8 | 837 | { |
d318976c FN |
838 | linelength = 80; |
839 | linebuffer = (char *) xmalloc (linelength); | |
9e0b60a8 | 840 | } |
9e0b60a8 | 841 | |
d318976c | 842 | p = linebuffer; |
9e0b60a8 | 843 | |
d318976c FN |
844 | /* Control-C quits instantly if typed while in this loop |
845 | since it should not wait until the user types a newline. */ | |
846 | immediate_quit++; | |
847 | #ifdef STOP_SIGNAL | |
848 | if (job_control) | |
362646f5 | 849 | signal (STOP_SIGNAL, handle_stop_sig); |
d318976c FN |
850 | #endif |
851 | ||
852 | while (1) | |
9e0b60a8 | 853 | { |
d318976c FN |
854 | /* Make sure that all output has been output. Some machines may let |
855 | you get away with leaving out some of the gdb_flush, but not all. */ | |
856 | wrap_here (""); | |
857 | gdb_flush (gdb_stdout); | |
858 | gdb_flush (gdb_stderr); | |
859 | ||
860 | if (source_file_name != NULL) | |
637537d0 | 861 | ++source_line_number; |
d318976c FN |
862 | |
863 | if (annotation_level > 1 && instream == stdin) | |
864 | { | |
306d9ac5 DC |
865 | puts_unfiltered ("\n\032\032pre-"); |
866 | puts_unfiltered (annotation_suffix); | |
867 | puts_unfiltered ("\n"); | |
d318976c FN |
868 | } |
869 | ||
870 | /* Don't use fancy stuff if not talking to stdin. */ | |
9a4105ab | 871 | if (deprecated_readline_hook && instream == NULL) |
d318976c | 872 | { |
9a4105ab | 873 | rl = (*deprecated_readline_hook) (local_prompt); |
d318976c FN |
874 | } |
875 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
876 | { | |
b4f5539f | 877 | rl = gdb_readline_wrapper (local_prompt); |
d318976c | 878 | } |
9e0b60a8 | 879 | else |
d318976c FN |
880 | { |
881 | rl = gdb_readline (local_prompt); | |
882 | } | |
9e0b60a8 | 883 | |
d318976c FN |
884 | if (annotation_level > 1 && instream == stdin) |
885 | { | |
306d9ac5 DC |
886 | puts_unfiltered ("\n\032\032post-"); |
887 | puts_unfiltered (annotation_suffix); | |
888 | puts_unfiltered ("\n"); | |
d318976c | 889 | } |
9e0b60a8 | 890 | |
d318976c | 891 | if (!rl || rl == (char *) EOF) |
9e0b60a8 | 892 | { |
d318976c FN |
893 | got_eof = 1; |
894 | break; | |
9e0b60a8 | 895 | } |
d318976c FN |
896 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
897 | { | |
898 | linelength = strlen (rl) + 1 + (p - linebuffer); | |
899 | nline = (char *) xrealloc (linebuffer, linelength); | |
900 | p += nline - linebuffer; | |
901 | linebuffer = nline; | |
902 | } | |
903 | p1 = rl; | |
904 | /* Copy line. Don't copy null at end. (Leaves line alone | |
905 | if this was just a newline) */ | |
906 | while (*p1) | |
907 | *p++ = *p1++; | |
9e0b60a8 | 908 | |
b8c9b27d | 909 | xfree (rl); /* Allocated in readline. */ |
9e0b60a8 | 910 | |
d318976c FN |
911 | if (p == linebuffer || *(p - 1) != '\\') |
912 | break; | |
9e0b60a8 | 913 | |
d318976c FN |
914 | p--; /* Put on top of '\'. */ |
915 | local_prompt = (char *) 0; | |
916 | } | |
9e0b60a8 | 917 | |
d318976c FN |
918 | #ifdef STOP_SIGNAL |
919 | if (job_control) | |
920 | signal (STOP_SIGNAL, SIG_DFL); | |
921 | #endif | |
922 | immediate_quit--; | |
9e0b60a8 | 923 | |
d318976c FN |
924 | if (got_eof) |
925 | return NULL; | |
9e0b60a8 | 926 | |
d318976c FN |
927 | #define SERVER_COMMAND_LENGTH 7 |
928 | server_command = | |
929 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
bf896cb0 | 930 | && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0; |
d318976c | 931 | if (server_command) |
9e0b60a8 | 932 | { |
d318976c FN |
933 | /* Note that we don't set `line'. Between this and the check in |
934 | dont_repeat, this insures that repeating will still do the | |
935 | right thing. */ | |
936 | *p = '\0'; | |
937 | return linebuffer + SERVER_COMMAND_LENGTH; | |
9e0b60a8 | 938 | } |
9e0b60a8 | 939 | |
d318976c FN |
940 | /* Do history expansion if that is wished. */ |
941 | if (history_expansion_p && instream == stdin | |
942 | && ISATTY (instream)) | |
943 | { | |
944 | char *history_value; | |
945 | int expanded; | |
9e0b60a8 | 946 | |
d318976c FN |
947 | *p = '\0'; /* Insert null now. */ |
948 | expanded = history_expand (linebuffer, &history_value); | |
949 | if (expanded) | |
950 | { | |
951 | /* Print the changes. */ | |
952 | printf_unfiltered ("%s\n", history_value); | |
9e0b60a8 | 953 | |
d318976c FN |
954 | /* If there was an error, call this function again. */ |
955 | if (expanded < 0) | |
956 | { | |
b8c9b27d | 957 | xfree (history_value); |
d318976c FN |
958 | return command_line_input (prompt_arg, repeat, annotation_suffix); |
959 | } | |
960 | if (strlen (history_value) > linelength) | |
961 | { | |
962 | linelength = strlen (history_value) + 1; | |
963 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
964 | } | |
965 | strcpy (linebuffer, history_value); | |
966 | p = linebuffer + strlen (linebuffer); | |
b8c9b27d | 967 | xfree (history_value); |
d318976c FN |
968 | } |
969 | } | |
9e0b60a8 | 970 | |
d318976c FN |
971 | /* If we just got an empty line, and that is supposed |
972 | to repeat the previous command, return the value in the | |
973 | global buffer. */ | |
974 | if (repeat && p == linebuffer) | |
975 | return line; | |
976 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); | |
977 | if (repeat && !*p1) | |
978 | return line; | |
9e0b60a8 | 979 | |
d318976c | 980 | *p = 0; |
9e0b60a8 | 981 | |
d318976c FN |
982 | /* Add line to history if appropriate. */ |
983 | if (instream == stdin | |
984 | && ISATTY (stdin) && *linebuffer) | |
985 | add_history (linebuffer); | |
9e0b60a8 | 986 | |
d318976c FN |
987 | /* Note: lines consisting solely of comments are added to the command |
988 | history. This is useful when you type a command, and then | |
989 | realize you don't want to execute it quite yet. You can comment | |
990 | out the command and then later fetch it from the value history | |
991 | and remove the '#'. The kill ring is probably better, but some | |
992 | people are in the habit of commenting things out. */ | |
993 | if (*p1 == '#') | |
994 | *p1 = '\0'; /* Found a comment. */ | |
9e0b60a8 | 995 | |
d318976c FN |
996 | /* Save into global buffer if appropriate. */ |
997 | if (repeat) | |
998 | { | |
999 | if (linelength > linesize) | |
1000 | { | |
1001 | line = xrealloc (line, linelength); | |
1002 | linesize = linelength; | |
1003 | } | |
1004 | strcpy (line, linebuffer); | |
1005 | return line; | |
1006 | } | |
9e0b60a8 | 1007 | |
d318976c | 1008 | return linebuffer; |
9e0b60a8 JM |
1009 | } |
1010 | \f | |
1011 | /* Print the GDB banner. */ | |
1012 | void | |
fba45db2 | 1013 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1014 | { |
1015 | /* From GNU coding standards, first line is meant to be easy for a | |
1016 | program to parse, and is just canonical program name and version | |
1017 | number, which starts after last space. */ | |
1018 | ||
1019 | fprintf_filtered (stream, "GNU gdb %s\n", version); | |
1020 | ||
1021 | /* Second line is a copyright notice. */ | |
1022 | ||
0bc2134e | 1023 | fprintf_filtered (stream, "Copyright 2004 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1024 | |
1025 | /* Following the copyright is a brief statement that the program is | |
1026 | free software, that users are free to copy and change it on | |
1027 | certain conditions, that it is covered by the GNU GPL, and that | |
1028 | there is no warranty. */ | |
1029 | ||
1030 | fprintf_filtered (stream, "\ | |
1031 | GDB is free software, covered by the GNU General Public License, and you are\n\ | |
1032 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
1033 | Type \"show copying\" to see the conditions.\n\ | |
1034 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
1035 | ||
1036 | /* After the required info we print the configuration information. */ | |
1037 | ||
1038 | fprintf_filtered (stream, "This GDB was configured as \""); | |
6314a349 | 1039 | if (strcmp (host_name, target_name) != 0) |
9e0b60a8 JM |
1040 | { |
1041 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
1042 | } | |
1043 | else | |
1044 | { | |
1045 | fprintf_filtered (stream, "%s", host_name); | |
1046 | } | |
1047 | fprintf_filtered (stream, "\"."); | |
1048 | } | |
9e0b60a8 JM |
1049 | \f |
1050 | /* get_prompt: access method for the GDB prompt string. */ | |
1051 | ||
9e0b60a8 | 1052 | char * |
fba45db2 | 1053 | get_prompt (void) |
9e0b60a8 | 1054 | { |
362646f5 | 1055 | return PROMPT (0); |
9e0b60a8 JM |
1056 | } |
1057 | ||
1058 | void | |
fba45db2 | 1059 | set_prompt (char *s) |
9e0b60a8 JM |
1060 | { |
1061 | /* ??rehrauer: I don't know why this fails, since it looks as though | |
1062 | assignments to prompt are wrapped in calls to savestring... | |
c5aa993b | 1063 | if (prompt != NULL) |
b8c9b27d | 1064 | xfree (prompt); |
c5aa993b | 1065 | */ |
362646f5 | 1066 | PROMPT (0) = savestring (s, strlen (s)); |
9e0b60a8 | 1067 | } |
9e0b60a8 | 1068 | \f |
c5aa993b | 1069 | |
9e0b60a8 JM |
1070 | /* If necessary, make the user confirm that we should quit. Return |
1071 | non-zero if we should quit, zero if we shouldn't. */ | |
1072 | ||
1073 | int | |
fba45db2 | 1074 | quit_confirm (void) |
9e0b60a8 | 1075 | { |
39f77062 | 1076 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
9e0b60a8 JM |
1077 | { |
1078 | char *s; | |
1079 | ||
1080 | /* This is something of a hack. But there's no reliable way to | |
c5aa993b JM |
1081 | see if a GUI is running. The `use_windows' variable doesn't |
1082 | cut it. */ | |
9a4105ab | 1083 | if (deprecated_init_ui_hook) |
9e0b60a8 JM |
1084 | s = "A debugging session is active.\nDo you still want to close the debugger?"; |
1085 | else if (attach_flag) | |
1086 | s = "The program is running. Quit anyway (and detach it)? "; | |
1087 | else | |
1088 | s = "The program is running. Exit anyway? "; | |
1089 | ||
306d9ac5 | 1090 | if (!query ("%s", s)) |
9e0b60a8 JM |
1091 | return 0; |
1092 | } | |
1093 | ||
1094 | return 1; | |
1095 | } | |
1096 | ||
b0abbc58 | 1097 | /* Helper routine for quit_force that requires error handling. */ |
9e0b60a8 | 1098 | |
b0abbc58 | 1099 | struct qt_args |
9e0b60a8 | 1100 | { |
b0abbc58 JJ |
1101 | char *args; |
1102 | int from_tty; | |
1103 | }; | |
9e0b60a8 | 1104 | |
b0abbc58 JJ |
1105 | static int |
1106 | quit_target (void *arg) | |
1107 | { | |
1108 | struct qt_args *qt = (struct qt_args *)arg; | |
9e0b60a8 | 1109 | |
39f77062 | 1110 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
9e0b60a8 JM |
1111 | { |
1112 | if (attach_flag) | |
b0abbc58 | 1113 | target_detach (qt->args, qt->from_tty); |
9e0b60a8 | 1114 | else |
b0abbc58 | 1115 | target_kill (); |
9e0b60a8 JM |
1116 | } |
1117 | ||
1118 | /* UDI wants this, to kill the TIP. */ | |
f1c07ab0 | 1119 | target_close (¤t_target, 1); |
9e0b60a8 JM |
1120 | |
1121 | /* Save the history information if it is appropriate to do so. */ | |
1122 | if (write_history_p && history_filename) | |
1123 | write_history (history_filename); | |
1124 | ||
c5aa993b | 1125 | do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
9e0b60a8 | 1126 | |
b0abbc58 JJ |
1127 | return 0; |
1128 | } | |
1129 | ||
1130 | /* Quit without asking for confirmation. */ | |
1131 | ||
1132 | void | |
1133 | quit_force (char *args, int from_tty) | |
1134 | { | |
1135 | int exit_code = 0; | |
365c70b1 | 1136 | struct qt_args qt; |
b0abbc58 JJ |
1137 | |
1138 | /* An optional expression may be used to cause gdb to terminate with the | |
1139 | value of that expression. */ | |
1140 | if (args) | |
1141 | { | |
1142 | struct value *val = parse_and_eval (args); | |
1143 | ||
1144 | exit_code = (int) value_as_long (val); | |
1145 | } | |
1146 | ||
365c70b1 JJ |
1147 | qt.args = args; |
1148 | qt.from_tty = from_tty; | |
1149 | ||
b0abbc58 | 1150 | /* We want to handle any quit errors and exit regardless. */ |
365c70b1 | 1151 | catch_errors (quit_target, &qt, |
b0abbc58 JJ |
1152 | "Quitting: ", RETURN_MASK_ALL); |
1153 | ||
9e0b60a8 JM |
1154 | exit (exit_code); |
1155 | } | |
1156 | ||
9e0b60a8 JM |
1157 | /* Returns whether GDB is running on a terminal and whether the user |
1158 | desires that questions be asked of them on that terminal. */ | |
1159 | ||
1160 | int | |
fba45db2 | 1161 | input_from_terminal_p (void) |
9e0b60a8 JM |
1162 | { |
1163 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
1164 | } | |
1165 | \f | |
9e0b60a8 | 1166 | static void |
fba45db2 | 1167 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1168 | { |
c5aa993b JM |
1169 | *line = 0; /* Can't call dont_repeat here because we're not |
1170 | necessarily reading from stdin. */ | |
9e0b60a8 JM |
1171 | } |
1172 | \f | |
1173 | /* Functions to manipulate command line editing control variables. */ | |
1174 | ||
1175 | /* Number of commands to print in each call to show_commands. */ | |
1176 | #define Hist_print 10 | |
d318976c | 1177 | void |
fba45db2 | 1178 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1179 | { |
1180 | /* Index for history commands. Relative to history_base. */ | |
1181 | int offset; | |
1182 | ||
1183 | /* Number of the history entry which we are planning to display next. | |
1184 | Relative to history_base. */ | |
1185 | static int num = 0; | |
1186 | ||
1187 | /* The first command in the history which doesn't exist (i.e. one more | |
1188 | than the number of the last command). Relative to history_base. */ | |
1189 | int hist_len; | |
1190 | ||
9e0b60a8 JM |
1191 | /* Print out some of the commands from the command history. */ |
1192 | /* First determine the length of the history list. */ | |
1193 | hist_len = history_size; | |
1194 | for (offset = 0; offset < history_size; offset++) | |
1195 | { | |
1196 | if (!history_get (history_base + offset)) | |
1197 | { | |
1198 | hist_len = offset; | |
1199 | break; | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | if (args) | |
1204 | { | |
1205 | if (args[0] == '+' && args[1] == '\0') | |
1206 | /* "info editing +" should print from the stored position. */ | |
1207 | ; | |
1208 | else | |
1209 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1210 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1211 | } |
1212 | /* "show commands" means print the last Hist_print commands. */ | |
1213 | else | |
1214 | { | |
1215 | num = hist_len - Hist_print; | |
1216 | } | |
1217 | ||
1218 | if (num < 0) | |
1219 | num = 0; | |
1220 | ||
1221 | /* If there are at least Hist_print commands, we want to display the last | |
1222 | Hist_print rather than, say, the last 6. */ | |
1223 | if (hist_len - num < Hist_print) | |
1224 | { | |
1225 | num = hist_len - Hist_print; | |
1226 | if (num < 0) | |
1227 | num = 0; | |
1228 | } | |
1229 | ||
1230 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
1231 | { | |
1232 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1233 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1234 | } |
1235 | ||
1236 | /* The next command we want to display is the next one that we haven't | |
1237 | displayed yet. */ | |
1238 | num += Hist_print; | |
1239 | ||
1240 | /* If the user repeats this command with return, it should do what | |
1241 | "show commands +" does. This is unnecessary if arg is null, | |
1242 | because "show commands +" is not useful after "show commands". */ | |
1243 | if (from_tty && args) | |
1244 | { | |
1245 | args[0] = '+'; | |
1246 | args[1] = '\0'; | |
1247 | } | |
1248 | } | |
1249 | ||
1250 | /* Called by do_setshow_command. */ | |
9e0b60a8 | 1251 | static void |
fba45db2 | 1252 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
1253 | { |
1254 | if (history_size == INT_MAX) | |
1255 | unstifle_history (); | |
1256 | else if (history_size >= 0) | |
1257 | stifle_history (history_size); | |
1258 | else | |
1259 | { | |
1260 | history_size = INT_MAX; | |
1261 | error ("History size must be non-negative"); | |
1262 | } | |
1263 | } | |
1264 | ||
d318976c | 1265 | void |
fba45db2 | 1266 | set_history (char *args, int from_tty) |
9e0b60a8 JM |
1267 | { |
1268 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
1269 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
1270 | } | |
1271 | ||
d318976c | 1272 | void |
fba45db2 | 1273 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1274 | { |
1275 | cmd_show_list (showhistlist, from_tty, ""); | |
1276 | } | |
1277 | ||
1278 | int info_verbose = 0; /* Default verbose msgs off */ | |
1279 | ||
1280 | /* Called by do_setshow_command. An elaborate joke. */ | |
d318976c | 1281 | void |
fba45db2 | 1282 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
1283 | { |
1284 | char *cmdname = "verbose"; | |
1285 | struct cmd_list_element *showcmd; | |
1286 | ||
1287 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1288 | ||
1289 | if (info_verbose) | |
1290 | { | |
1291 | c->doc = "Set verbose printing of informational messages."; | |
1292 | showcmd->doc = "Show verbose printing of informational messages."; | |
1293 | } | |
1294 | else | |
1295 | { | |
1296 | c->doc = "Set verbosity."; | |
1297 | showcmd->doc = "Show verbosity."; | |
1298 | } | |
1299 | } | |
1300 | ||
9e0b60a8 JM |
1301 | /* Init the history buffer. Note that we are called after the init file(s) |
1302 | * have been read so that the user can change the history file via his | |
1303 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1304 | * overrides all of this. | |
1305 | */ | |
1306 | ||
1307 | void | |
fba45db2 | 1308 | init_history (void) |
9e0b60a8 JM |
1309 | { |
1310 | char *tmpenv; | |
1311 | ||
1312 | tmpenv = getenv ("HISTSIZE"); | |
1313 | if (tmpenv) | |
1314 | history_size = atoi (tmpenv); | |
1315 | else if (!history_size) | |
1316 | history_size = 256; | |
1317 | ||
1318 | stifle_history (history_size); | |
1319 | ||
1320 | tmpenv = getenv ("GDBHISTFILE"); | |
1321 | if (tmpenv) | |
c5aa993b JM |
1322 | history_filename = savestring (tmpenv, strlen (tmpenv)); |
1323 | else if (!history_filename) | |
1324 | { | |
1325 | /* We include the current directory so that if the user changes | |
1326 | directories the file written will be the same as the one | |
1327 | that was read. */ | |
a0b3c4fd | 1328 | #ifdef __MSDOS__ |
eb2f494a AC |
1329 | /* No leading dots in file names are allowed on MSDOS. */ |
1330 | history_filename = concat (current_directory, "/_gdb_history", NULL); | |
a0b3c4fd | 1331 | #else |
c5aa993b | 1332 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
a0b3c4fd | 1333 | #endif |
c5aa993b | 1334 | } |
9e0b60a8 JM |
1335 | read_history (history_filename); |
1336 | } | |
1337 | ||
1338 | static void | |
fba45db2 | 1339 | init_main (void) |
9e0b60a8 JM |
1340 | { |
1341 | struct cmd_list_element *c; | |
1342 | ||
362646f5 AC |
1343 | /* initialize the prompt stack to a simple "(gdb) " prompt or to |
1344 | whatever the DEFAULT_PROMPT is. */ | |
1345 | the_prompts.top = 0; | |
1346 | PREFIX (0) = ""; | |
1347 | PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); | |
1348 | SUFFIX (0) = ""; | |
1349 | /* Set things up for annotation_level > 1, if the user ever decides | |
1350 | to use it. */ | |
1351 | async_annotation_suffix = "prompt"; | |
1352 | /* Set the variable associated with the setshow prompt command. */ | |
1353 | new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0))); | |
1354 | ||
1355 | /* If gdb was started with --annotate=2, this is equivalent to the | |
1356 | user entering the command 'set annotate 2' at the gdb prompt, so | |
1357 | we need to do extra processing. */ | |
1358 | if (annotation_level > 1) | |
1359 | set_async_annotation_level (NULL, 0, NULL); | |
9e0b60a8 JM |
1360 | |
1361 | /* Set the important stuff up for command editing. */ | |
1362 | command_editing_p = 1; | |
9e0b60a8 JM |
1363 | history_expansion_p = 0; |
1364 | write_history_p = 0; | |
1365 | ||
1366 | /* Setup important stuff for command line editing. */ | |
38017ce8 | 1367 | rl_completion_entry_function = readline_line_completion_function; |
51065942 | 1368 | rl_completer_word_break_characters = default_word_break_characters (); |
d318976c | 1369 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); |
9e0b60a8 | 1370 | rl_readline_name = "gdb"; |
7cb3ec5e | 1371 | rl_terminal_name = getenv ("TERM"); |
9e0b60a8 | 1372 | |
467d8519 TT |
1373 | /* The name for this defun comes from Bash, where it originated. |
1374 | 15 is Control-o, the same binding this function has in Bash. */ | |
1375 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1376 | ||
362646f5 AC |
1377 | c = add_set_cmd ("prompt", class_support, var_string, |
1378 | (char *) &new_async_prompt, "Set gdb's prompt", | |
1379 | &setlist); | |
1380 | deprecated_add_show_from_set (c, &showlist); | |
1381 | set_cmd_sfunc (c, set_async_prompt); | |
9e0b60a8 | 1382 | |
9e0b60a8 JM |
1383 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ |
1384 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
1385 | hitting return."); | |
1386 | ||
362646f5 AC |
1387 | c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p, |
1388 | "Set editing of command lines as they are typed.\n\ | |
9e0b60a8 JM |
1389 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
1390 | Without an argument, command line editing is enabled. To edit, use\n\ | |
1391 | EMACS-like or VI-like commands like control-P or ESC.", &setlist); | |
1392 | ||
362646f5 AC |
1393 | deprecated_add_show_from_set (c, &showlist); |
1394 | set_cmd_sfunc (c, set_async_editing_command); | |
9e0b60a8 | 1395 | |
cb1a6d5f | 1396 | deprecated_add_show_from_set |
c5aa993b JM |
1397 | (add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p, |
1398 | "Set saving of the history record on exit.\n\ | |
9e0b60a8 JM |
1399 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
1400 | Without an argument, saving is enabled.", &sethistlist), | |
1401 | &showhistlist); | |
1402 | ||
c5aa993b | 1403 | c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size, |
d4654627 | 1404 | "Set the size of the command history,\n\ |
9e0b60a8 | 1405 | ie. the number of previous commands to keep a record of.", &sethistlist); |
cb1a6d5f | 1406 | deprecated_add_show_from_set (c, &showhistlist); |
9f60d481 | 1407 | set_cmd_sfunc (c, set_history_size_command); |
9e0b60a8 | 1408 | |
7a1bd56a EZ |
1409 | c = add_set_cmd ("filename", no_class, var_filename, |
1410 | (char *) &history_filename, | |
1411 | "Set the filename in which to record the command history\n\ | |
d4654627 | 1412 | (the list of previous commands of which a record is kept).", &sethistlist); |
5ba2abeb | 1413 | set_cmd_completer (c, filename_completer); |
cb1a6d5f | 1414 | deprecated_add_show_from_set (c, &showhistlist); |
9e0b60a8 | 1415 | |
cb1a6d5f | 1416 | deprecated_add_show_from_set |
9e0b60a8 | 1417 | (add_set_cmd ("confirm", class_support, var_boolean, |
c5aa993b | 1418 | (char *) &caution, |
9e0b60a8 JM |
1419 | "Set whether to confirm potentially dangerous operations.", |
1420 | &setlist), | |
1421 | &showlist); | |
1422 | ||
362646f5 AC |
1423 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
1424 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
1425 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
1426 | 2 == output annotated suitably for use by programs that control GDB.", | |
362646f5 AC |
1427 | &setlist); |
1428 | deprecated_add_show_from_set (c, &showlist); | |
1429 | set_cmd_sfunc (c, set_async_annotation_level); | |
1430 | ||
1431 | deprecated_add_show_from_set | |
1432 | (add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p, | |
1433 | "Set notification of completion for asynchronous execution commands.\n\ | |
104c1213 | 1434 | Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist), |
362646f5 | 1435 | &showlist); |
9e0b60a8 | 1436 | } |
64cdedad EZ |
1437 | |
1438 | void | |
1439 | gdb_init (char *argv0) | |
1440 | { | |
1441 | if (pre_init_ui_hook) | |
1442 | pre_init_ui_hook (); | |
1443 | ||
1444 | /* Run the init function of each source file */ | |
1445 | ||
1446 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
1447 | current_directory = gdb_dirbuf; | |
1448 | ||
1449 | #ifdef __MSDOS__ | |
1450 | /* Make sure we return to the original directory upon exit, come | |
1451 | what may, since the OS doesn't do that for us. */ | |
1452 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1453 | #endif | |
1454 | ||
1455 | init_cmd_lists (); /* This needs to be done first */ | |
1456 | initialize_targets (); /* Setup target_terminal macros for utils.c */ | |
1457 | initialize_utils (); /* Make errors and warnings possible */ | |
1458 | initialize_all_files (); | |
1459 | initialize_current_architecture (); | |
1460 | init_cli_cmds(); | |
1461 | init_main (); /* But that omits this file! Do it now */ | |
1462 | ||
362646f5 | 1463 | async_init_signals (); |
64cdedad EZ |
1464 | |
1465 | /* We need a default language for parsing expressions, so simple things like | |
1466 | "set width 0" won't fail if no language is explicitly set in a config file | |
1467 | or implicitly set by reading an executable during startup. */ | |
1468 | set_language (language_c); | |
1469 | expected_language = current_language; /* don't warn about the change. */ | |
1470 | ||
9a4105ab AC |
1471 | /* Allow another UI to initialize. If the UI fails to initialize, |
1472 | and it wants GDB to revert to the CLI, it should clear | |
1473 | deprecated_init_ui_hook. */ | |
1474 | if (deprecated_init_ui_hook) | |
1475 | deprecated_init_ui_hook (argv0); | |
64cdedad | 1476 | } |