Commit | Line | Data |
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c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
a752853e AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
0bc2134e | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
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" | |
042be3a9 | 33 | #include <signal.h> |
c906108c SS |
34 | #include "target.h" |
35 | #include "breakpoint.h" | |
36 | #include "gdbtypes.h" | |
37 | #include "expression.h" | |
38 | #include "value.h" | |
39 | #include "language.h" | |
c5aa993b | 40 | #include "terminal.h" /* For job_control. */ |
c906108c | 41 | #include "annotate.h" |
c5f0f3d0 | 42 | #include "completer.h" |
c906108c | 43 | #include "top.h" |
d4f3574e | 44 | #include "version.h" |
210661e7 | 45 | #include "serial.h" |
d16aafd8 | 46 | #include "doublest.h" |
f9c696d2 | 47 | #include "gdb_assert.h" |
c906108c SS |
48 | |
49 | /* readline include files */ | |
dbda9972 AC |
50 | #include "readline/readline.h" |
51 | #include "readline/history.h" | |
c906108c SS |
52 | |
53 | /* readline defines this. */ | |
54 | #undef savestring | |
55 | ||
56 | #include <sys/types.h> | |
c906108c | 57 | |
c4093a6a | 58 | #include <setjmp.h> |
2acceee2 | 59 | |
c2c6d25f | 60 | #include "event-top.h" |
c906108c SS |
61 | #include "gdb_string.h" |
62 | #include "gdb_stat.h" | |
63 | #include <ctype.h> | |
8b93c638 JM |
64 | #include "ui-out.h" |
65 | #include "cli-out.h" | |
c906108c | 66 | |
104c1213 JM |
67 | /* Default command line prompt. This is overriden in some configs. */ |
68 | ||
69 | #ifndef DEFAULT_PROMPT | |
70 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
71 | #endif |
72 | ||
73 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
74 | ||
75 | #ifndef GDBINIT_FILENAME | |
76 | #define GDBINIT_FILENAME ".gdbinit" | |
77 | #endif | |
78 | char gdbinit[] = GDBINIT_FILENAME; | |
79 | ||
80 | int inhibit_gdbinit = 0; | |
81 | ||
82 | /* If nonzero, and GDB has been configured to be able to use windows, | |
83 | attempt to open them upon startup. */ | |
84 | ||
f15ab4a7 | 85 | int use_windows = 0; |
c906108c | 86 | |
c906108c SS |
87 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
88 | ||
89 | /* Flag for whether we want all the "from_tty" gubbish printed. */ | |
90 | ||
c5aa993b | 91 | int caution = 1; /* Default is yes, sigh. */ |
c906108c | 92 | |
c906108c SS |
93 | /* stdio stream that command input is being read from. Set to stdin normally. |
94 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
95 | executing a user-defined command or interacting via a GUI. */ | |
96 | ||
97 | FILE *instream; | |
98 | ||
99 | /* Current working directory. */ | |
100 | ||
101 | char *current_directory; | |
102 | ||
103 | /* The directory name is actually stored here (usually). */ | |
104 | char gdb_dirbuf[1024]; | |
105 | ||
106 | /* Function to call before reading a command, if nonzero. | |
107 | The function receives two args: an input stream, | |
108 | and a prompt string. */ | |
109 | ||
507f3c78 | 110 | void (*window_hook) (FILE *, char *); |
c906108c SS |
111 | |
112 | int epoch_interface; | |
113 | int xgdb_verbose; | |
114 | ||
115 | /* gdb prints this when reading a command interactively */ | |
c5aa993b | 116 | static char *gdb_prompt_string; /* the global prompt string */ |
c906108c SS |
117 | |
118 | /* Buffer used for reading command lines, and the size | |
119 | allocated for it so far. */ | |
120 | ||
121 | char *line; | |
122 | int linesize = 100; | |
123 | ||
124 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 125 | affects things like recording into the command history, commands |
c906108c SS |
126 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
127 | whatever) can issue its own commands and also send along commands | |
128 | from the user, and have the user not notice that the user interface | |
129 | is issuing commands too. */ | |
130 | int server_command; | |
131 | ||
132 | /* Baud rate specified for talking to serial target systems. Default | |
133 | is left as -1, so targets can choose their own defaults. */ | |
134 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 | |
135 | or (unsigned int)-1. This is a Bad User Interface. */ | |
136 | ||
137 | int baud_rate = -1; | |
138 | ||
139 | /* Timeout limit for response from target. */ | |
140 | ||
ce808e91 AC |
141 | /* The default value has been changed many times over the years. It |
142 | was originally 5 seconds. But that was thought to be a long time | |
143 | to sit and wait, so it was changed to 2 seconds. That was thought | |
144 | to be plenty unless the connection was going through some terminal | |
145 | server or multiplexer or other form of hairy serial connection. | |
146 | ||
147 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
148 | it began being used in other remote-* targets. It appears that the | |
149 | default was changed to 20 seconds at that time, perhaps because the | |
85a453d5 | 150 | Renesas E7000 ICE didn't always respond in a timely manner. |
ce808e91 AC |
151 | |
152 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
153 | 20 seconds is far worse. This demonstrates the difficulty of using | |
154 | a single variable for all protocol timeouts. | |
155 | ||
156 | As remote.c is used much more than remote-e7000.c, it was changed | |
157 | back to 2 seconds in 1999. */ | |
158 | ||
159 | int remote_timeout = 2; | |
c906108c SS |
160 | |
161 | /* Non-zero tells remote* modules to output debugging info. */ | |
162 | ||
163 | int remote_debug = 0; | |
164 | ||
43ff13b4 JM |
165 | /* Non-zero means the target is running. Note: this is different from |
166 | saying that there is an active target and we are stopped at a | |
167 | breakpoint, for instance. This is a real indicator whether the | |
168 | target is off and running, which gdb is doing something else. */ | |
169 | int target_executing = 0; | |
170 | ||
c906108c SS |
171 | /* Level of control structure. */ |
172 | static int control_level; | |
173 | ||
6dd77b81 RH |
174 | /* Sbrk location on entry to main. Used for statistics only. */ |
175 | #ifdef HAVE_SBRK | |
176 | char *lim_at_start; | |
177 | #endif | |
178 | ||
c906108c SS |
179 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ |
180 | ||
181 | #ifndef STOP_SIGNAL | |
182 | #ifdef SIGTSTP | |
183 | #define STOP_SIGNAL SIGTSTP | |
a14ed312 | 184 | static void stop_sig (int); |
c906108c SS |
185 | #endif |
186 | #endif | |
187 | ||
c906108c SS |
188 | /* Hooks for alternate command interfaces. */ |
189 | ||
190 | /* Called after most modules have been initialized, but before taking users | |
1ad24239 KS |
191 | command file. |
192 | ||
193 | If the UI fails to initialize and it wants GDB to continue | |
194 | using the default UI, then it should clear this hook before returning. */ | |
c906108c | 195 | |
9a4105ab | 196 | void (*deprecated_init_ui_hook) (char *argv0); |
7a292a7a SS |
197 | |
198 | /* This hook is called from within gdb's many mini-event loops which could | |
199 | steal control from a real user interface's event loop. It returns | |
200 | non-zero if the user is requesting a detach, zero otherwise. */ | |
201 | ||
98bbd631 | 202 | int (*deprecated_ui_loop_hook) (int); |
c906108c SS |
203 | |
204 | /* Called instead of command_loop at top level. Can be invoked via | |
b5a2688f | 205 | throw_exception(). */ |
c906108c | 206 | |
9a4105ab | 207 | void (*deprecated_command_loop_hook) (void); |
c906108c SS |
208 | |
209 | ||
c906108c SS |
210 | /* Called from print_frame_info to list the line we stopped in. */ |
211 | ||
9a4105ab AC |
212 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, int line, |
213 | int stopline, int noerror); | |
c906108c SS |
214 | /* Replaces most of query. */ |
215 | ||
9a4105ab | 216 | int (*deprecated_query_hook) (const char *, va_list); |
c906108c SS |
217 | |
218 | /* Replaces most of warning. */ | |
219 | ||
9a4105ab | 220 | void (*deprecated_warning_hook) (const char *, va_list); |
c906108c | 221 | |
9a4105ab AC |
222 | /* These three functions support getting lines of text from the user. |
223 | They are used in sequence. First deprecated_readline_begin_hook is | |
224 | called with a text string that might be (for example) a message for | |
225 | the user to type in a sequence of commands to be executed at a | |
226 | breakpoint. If this function calls back to a GUI, it might take | |
227 | this opportunity to pop up a text interaction window with this | |
228 | message. Next, deprecated_readline_hook is called with a prompt | |
229 | that is emitted prior to collecting the user input. It can be | |
230 | called multiple times. Finally, deprecated_readline_end_hook is | |
231 | called to notify the GUI that we are done with the interaction | |
232 | window and it can close it. */ | |
c906108c | 233 | |
9a4105ab AC |
234 | void (*deprecated_readline_begin_hook) (char *, ...); |
235 | char *(*deprecated_readline_hook) (char *); | |
236 | void (*deprecated_readline_end_hook) (void); | |
c906108c SS |
237 | |
238 | /* Called as appropriate to notify the interface of the specified breakpoint | |
239 | conditions. */ | |
240 | ||
9a4105ab AC |
241 | void (*deprecated_create_breakpoint_hook) (struct breakpoint * bpt); |
242 | void (*deprecated_delete_breakpoint_hook) (struct breakpoint * bpt); | |
243 | void (*deprecated_modify_breakpoint_hook) (struct breakpoint * bpt); | |
c906108c | 244 | |
6426a772 JM |
245 | /* Called as appropriate to notify the interface that we have attached |
246 | to or detached from an already running process. */ | |
247 | ||
9a4105ab AC |
248 | void (*deprecated_attach_hook) (void); |
249 | void (*deprecated_detach_hook) (void); | |
6426a772 | 250 | |
c906108c SS |
251 | /* Called during long calculations to allow GUI to repair window damage, and to |
252 | check for stop buttons, etc... */ | |
253 | ||
9a4105ab | 254 | void (*deprecated_interactive_hook) (void); |
c906108c SS |
255 | |
256 | /* Called when the registers have changed, as a hint to a GUI | |
257 | to minimize window update. */ | |
258 | ||
9a4105ab | 259 | void (*deprecated_registers_changed_hook) (void); |
c906108c SS |
260 | |
261 | /* Tell the GUI someone changed the register REGNO. -1 means | |
262 | that the caller does not know which register changed or | |
c5aa993b | 263 | that several registers have changed (see value_assign). */ |
9a4105ab | 264 | void (*deprecated_register_changed_hook) (int regno); |
c906108c SS |
265 | |
266 | /* Tell the GUI someone changed LEN bytes of memory at ADDR */ | |
9a4105ab | 267 | void (*deprecated_memory_changed_hook) (CORE_ADDR addr, int len); |
c906108c SS |
268 | |
269 | /* Called when going to wait for the target. Usually allows the GUI to run | |
270 | while waiting for target events. */ | |
271 | ||
9a4105ab AC |
272 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, |
273 | struct target_waitstatus * status); | |
c906108c SS |
274 | |
275 | /* Used by UI as a wrapper around command execution. May do various things | |
276 | like enabling/disabling buttons, etc... */ | |
277 | ||
9a4105ab AC |
278 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, char *cmd, |
279 | int from_tty); | |
c906108c | 280 | |
96baa820 JM |
281 | /* Called after a `set' command has finished. Is only run if the |
282 | `set' command succeeded. */ | |
283 | ||
9a4105ab | 284 | void (*deprecated_set_hook) (struct cmd_list_element * c); |
96baa820 | 285 | |
c906108c SS |
286 | /* Called when the current thread changes. Argument is thread id. */ |
287 | ||
9a4105ab | 288 | void (*deprecated_context_hook) (int id); |
c906108c SS |
289 | |
290 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
291 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
292 | ||
c40d0d10 | 293 | void (*deprecated_error_hook) (void); |
c906108c | 294 | \f |
c5aa993b | 295 | |
99eeeb0f ND |
296 | /* One should use catch_errors rather than manipulating these |
297 | directly. */ | |
c4093a6a JM |
298 | #if defined(HAVE_SIGSETJMP) |
299 | #define SIGJMP_BUF sigjmp_buf | |
ae9d9b96 CF |
300 | #define SIGSETJMP(buf) sigsetjmp((buf), 1) |
301 | #define SIGLONGJMP(buf,val) siglongjmp((buf), (val)) | |
c4093a6a JM |
302 | #else |
303 | #define SIGJMP_BUF jmp_buf | |
304 | #define SIGSETJMP(buf) setjmp(buf) | |
ae9d9b96 | 305 | #define SIGLONGJMP(buf,val) longjmp((buf), (val)) |
c4093a6a JM |
306 | #endif |
307 | ||
b5a2688f | 308 | /* Where to go for throw_exception(). */ |
99eeeb0f | 309 | static SIGJMP_BUF *catch_return; |
c906108c | 310 | |
99eeeb0f | 311 | /* Return for reason REASON to the nearest containing catch_errors(). */ |
c906108c | 312 | |
c2d11a7d | 313 | NORETURN void |
b5a2688f | 314 | throw_exception (enum return_reason reason) |
c906108c SS |
315 | { |
316 | quit_flag = 0; | |
317 | immediate_quit = 0; | |
318 | ||
319 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
320 | I can think of a reason why that is vital, though). */ | |
c5aa993b | 321 | bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */ |
c906108c SS |
322 | |
323 | disable_current_display (); | |
324 | do_cleanups (ALL_CLEANUPS); | |
362646f5 | 325 | if (target_can_async_p () && !target_executing) |
43ff13b4 | 326 | do_exec_cleanups (ALL_CLEANUPS); |
362646f5 | 327 | if (sync_execution) |
6426a772 | 328 | do_exec_error_cleanups (ALL_CLEANUPS); |
c906108c SS |
329 | |
330 | if (annotation_level > 1) | |
331 | switch (reason) | |
332 | { | |
333 | case RETURN_QUIT: | |
334 | annotate_quit (); | |
335 | break; | |
336 | case RETURN_ERROR: | |
337 | annotate_error (); | |
338 | break; | |
339 | } | |
340 | ||
99eeeb0f ND |
341 | /* Jump to the containing catch_errors() call, communicating REASON |
342 | to that call via setjmp's return value. Note that REASON can't | |
343 | be zero, by definition in defs.h. */ | |
344 | ||
eb2f494a | 345 | (NORETURN void) SIGLONGJMP (*catch_return, (int) reason); |
c906108c SS |
346 | } |
347 | ||
f9c696d2 AC |
348 | /* Call FUNC() with args FUNC_UIOUT and FUNC_ARGS, catching any |
349 | errors. Set FUNC_CAUGHT to an ``enum return_reason'' if the | |
b5a2688f | 350 | function is aborted (using throw_exception() or zero if the |
f9c696d2 AC |
351 | function returns normally. Set FUNC_VAL to the value returned by |
352 | the function or 0 if the function was aborted. | |
c906108c SS |
353 | |
354 | Must not be called with immediate_quit in effect (bad things might | |
355 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
356 | This is an OK restriction; with very few exceptions immediate_quit can | |
357 | be replaced by judicious use of QUIT. | |
358 | ||
359 | MASK specifies what to catch; it is normally set to | |
360 | RETURN_MASK_ALL, if for no other reason than that the code which | |
361 | calls catch_errors might not be set up to deal with a quit which | |
362 | isn't caught. But if the code can deal with it, it generally | |
363 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
364 | useful to abort only the portion of the operation inside the | |
365 | catch_errors. Note that quit should return to the command line | |
366 | fairly quickly, even if some further processing is being done. */ | |
367 | ||
11cf8741 JM |
368 | /* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with |
369 | error() et.al. could maintain a set of flags that indicate the the | |
370 | current state of each of the longjmp buffers. This would give the | |
371 | longjmp code the chance to detect a longjmp botch (before it gets | |
372 | to longjmperror()). Prior to 1999-11-05 this wasn't possible as | |
373 | code also randomly used a SET_TOP_LEVEL macro that directly | |
374 | initialize the longjmp buffers. */ | |
375 | ||
e26cc349 | 376 | /* MAYBE: cagney/1999-11-05: Should the catch_errors and cleanups code |
11cf8741 JM |
377 | be consolidated into a single file instead of being distributed |
378 | between utils.c and top.c? */ | |
379 | ||
f9c696d2 AC |
380 | static void |
381 | catcher (catch_exceptions_ftype *func, | |
382 | struct ui_out *func_uiout, | |
383 | void *func_args, | |
384 | int *func_val, | |
385 | enum return_reason *func_caught, | |
386 | char *errstring, | |
4fcef00a | 387 | char **gdberrmsg, |
f9c696d2 | 388 | return_mask mask) |
c906108c | 389 | { |
99eeeb0f ND |
390 | SIGJMP_BUF *saved_catch; |
391 | SIGJMP_BUF catch; | |
c906108c SS |
392 | struct cleanup *saved_cleanup_chain; |
393 | char *saved_error_pre_print; | |
394 | char *saved_quit_pre_print; | |
f9c696d2 | 395 | struct ui_out *saved_uiout; |
c906108c | 396 | |
99eeeb0f ND |
397 | /* Return value from SIGSETJMP(): enum return_reason if error or |
398 | quit caught, 0 otherwise. */ | |
399 | int caught; | |
400 | ||
f9c696d2 AC |
401 | /* Return value from FUNC(): Hopefully non-zero. Explicitly set to |
402 | zero if an error quit was caught. */ | |
403 | int val; | |
404 | ||
99eeeb0f ND |
405 | /* Override error/quit messages during FUNC. */ |
406 | ||
c906108c SS |
407 | saved_error_pre_print = error_pre_print; |
408 | saved_quit_pre_print = quit_pre_print; | |
409 | ||
410 | if (mask & RETURN_MASK_ERROR) | |
99eeeb0f | 411 | error_pre_print = errstring; |
c906108c | 412 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
413 | quit_pre_print = errstring; |
414 | ||
f9c696d2 AC |
415 | /* Override the global ``struct ui_out'' builder. */ |
416 | ||
417 | saved_uiout = uiout; | |
418 | uiout = func_uiout; | |
419 | ||
99eeeb0f ND |
420 | /* Prevent error/quit during FUNC from calling cleanups established |
421 | prior to here. */ | |
422 | ||
423 | saved_cleanup_chain = save_cleanups (); | |
424 | ||
425 | /* Call FUNC, catching error/quit events. */ | |
426 | ||
427 | saved_catch = catch_return; | |
428 | catch_return = &catch; | |
429 | caught = SIGSETJMP (catch); | |
430 | if (!caught) | |
f9c696d2 | 431 | val = (*func) (func_uiout, func_args); |
7f7e9482 | 432 | else |
4fcef00a JJ |
433 | { |
434 | val = 0; | |
435 | /* If caller wants a copy of the low-level error message, make one. | |
436 | This is used in the case of a silent error whereby the caller | |
437 | may optionally want to issue the message. */ | |
438 | if (gdberrmsg) | |
439 | *gdberrmsg = error_last_message (); | |
440 | } | |
99eeeb0f ND |
441 | catch_return = saved_catch; |
442 | ||
e26cc349 | 443 | /* FIXME: cagney/1999-11-05: A correct FUNC implementation will |
99eeeb0f | 444 | clean things up (restoring the cleanup chain) to the state they |
e26cc349 | 445 | were just prior to the call. Unfortunately, many FUNC's are not |
99eeeb0f ND |
446 | that well behaved. This could be fixed by adding either a |
447 | do_cleanups call (to cover the problem) or an assertion check to | |
448 | detect bad FUNCs code. */ | |
449 | ||
f9c696d2 AC |
450 | /* Restore the cleanup chain, the error/quit messages, and the uiout |
451 | builder, to their original states. */ | |
c906108c SS |
452 | |
453 | restore_cleanups (saved_cleanup_chain); | |
454 | ||
f9c696d2 AC |
455 | uiout = saved_uiout; |
456 | ||
c906108c | 457 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
458 | quit_pre_print = saved_quit_pre_print; |
459 | if (mask & RETURN_MASK_ERROR) | |
460 | error_pre_print = saved_error_pre_print; | |
461 | ||
f9c696d2 AC |
462 | /* Return normally if no error/quit event occurred or this catcher |
463 | can handle this exception. The caller analyses the func return | |
464 | values. */ | |
99eeeb0f | 465 | |
f9c696d2 AC |
466 | if (!caught || (mask & RETURN_MASK (caught))) |
467 | { | |
468 | *func_val = val; | |
469 | *func_caught = caught; | |
470 | return; | |
471 | } | |
99eeeb0f | 472 | |
f9c696d2 | 473 | /* The caller didn't request that the event be caught, relay the |
99eeeb0f ND |
474 | event to the next containing catch_errors(). */ |
475 | ||
b5a2688f | 476 | throw_exception (caught); |
f9c696d2 | 477 | } |
99eeeb0f | 478 | |
f9c696d2 AC |
479 | int |
480 | catch_exceptions (struct ui_out *uiout, | |
481 | catch_exceptions_ftype *func, | |
482 | void *func_args, | |
483 | char *errstring, | |
484 | return_mask mask) | |
485 | { | |
486 | int val; | |
487 | enum return_reason caught; | |
4fcef00a JJ |
488 | catcher (func, uiout, func_args, &val, &caught, errstring, NULL, mask); |
489 | gdb_assert (val >= 0); | |
490 | gdb_assert (caught <= 0); | |
491 | if (caught < 0) | |
492 | return caught; | |
493 | return val; | |
494 | } | |
495 | ||
496 | int | |
497 | catch_exceptions_with_msg (struct ui_out *uiout, | |
498 | catch_exceptions_ftype *func, | |
499 | void *func_args, | |
500 | char *errstring, | |
501 | char **gdberrmsg, | |
502 | return_mask mask) | |
503 | { | |
504 | int val; | |
505 | enum return_reason caught; | |
506 | catcher (func, uiout, func_args, &val, &caught, errstring, gdberrmsg, mask); | |
f9c696d2 AC |
507 | gdb_assert (val >= 0); |
508 | gdb_assert (caught <= 0); | |
509 | if (caught < 0) | |
510 | return caught; | |
511 | return val; | |
512 | } | |
99eeeb0f | 513 | |
f9c696d2 AC |
514 | struct catch_errors_args |
515 | { | |
516 | catch_errors_ftype *func; | |
517 | void *func_args; | |
518 | }; | |
99eeeb0f | 519 | |
b9362cc7 | 520 | static int |
f9c696d2 AC |
521 | do_catch_errors (struct ui_out *uiout, void *data) |
522 | { | |
523 | struct catch_errors_args *args = data; | |
524 | return args->func (args->func_args); | |
525 | } | |
99eeeb0f | 526 | |
f9c696d2 AC |
527 | int |
528 | catch_errors (catch_errors_ftype *func, void *func_args, char *errstring, | |
529 | return_mask mask) | |
530 | { | |
531 | int val; | |
532 | enum return_reason caught; | |
533 | struct catch_errors_args args; | |
534 | args.func = func; | |
535 | args.func_args = func_args; | |
4fcef00a JJ |
536 | catcher (do_catch_errors, uiout, &args, &val, &caught, errstring, |
537 | NULL, mask); | |
f9c696d2 AC |
538 | if (caught != 0) |
539 | return 0; | |
540 | return val; | |
c906108c SS |
541 | } |
542 | ||
11cf8741 JM |
543 | struct captured_command_args |
544 | { | |
545 | catch_command_errors_ftype *command; | |
546 | char *arg; | |
547 | int from_tty; | |
548 | }; | |
549 | ||
550 | static int | |
551 | do_captured_command (void *data) | |
552 | { | |
553 | struct captured_command_args *context = data; | |
554 | context->command (context->arg, context->from_tty); | |
555 | /* FIXME: cagney/1999-11-07: Technically this do_cleanups() call | |
556 | isn't needed. Instead an assertion check could be made that | |
557 | simply confirmed that the called function correctly cleaned up | |
e26cc349 | 558 | after itself. Unfortunately, old code (prior to 1999-11-04) in |
11cf8741 JM |
559 | main.c was calling SET_TOP_LEVEL(), calling the command function, |
560 | and then *always* calling do_cleanups(). For the moment we | |
561 | remain ``bug compatible'' with that old code.. */ | |
562 | do_cleanups (ALL_CLEANUPS); | |
563 | return 1; | |
564 | } | |
565 | ||
566 | int | |
eb2f494a | 567 | catch_command_errors (catch_command_errors_ftype * command, |
11cf8741 JM |
568 | char *arg, int from_tty, return_mask mask) |
569 | { | |
570 | struct captured_command_args args; | |
571 | args.command = command; | |
572 | args.arg = arg; | |
573 | args.from_tty = from_tty; | |
574 | return catch_errors (do_captured_command, &args, "", mask); | |
575 | } | |
576 | ||
577 | ||
c906108c SS |
578 | /* Handler for SIGHUP. */ |
579 | ||
580 | #ifdef SIGHUP | |
392a587b | 581 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
582 | gdb to use the event loop as the default command loop and we merge |
583 | event-top.c into this file, top.c */ | |
584 | /* static */ int | |
d0c8cdfb | 585 | quit_cover (void *s) |
c906108c | 586 | { |
c5aa993b JM |
587 | caution = 0; /* Throw caution to the wind -- we're exiting. |
588 | This prevents asking the user dumb questions. */ | |
589 | quit_command ((char *) 0, 0); | |
c906108c SS |
590 | return 0; |
591 | } | |
592 | #endif /* defined SIGHUP */ | |
593 | \f | |
594 | /* Line number we are currently in in a file which is being sourced. */ | |
392a587b | 595 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
596 | gdb to use the event loop as the default command loop and we merge |
597 | event-top.c into this file, top.c */ | |
598 | /* static */ int source_line_number; | |
c906108c SS |
599 | |
600 | /* Name of the file we are sourcing. */ | |
392a587b | 601 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
602 | gdb to use the event loop as the default command loop and we merge |
603 | event-top.c into this file, top.c */ | |
604 | /* static */ char *source_file_name; | |
c906108c SS |
605 | |
606 | /* Buffer containing the error_pre_print used by the source stuff. | |
607 | Malloc'd. */ | |
392a587b | 608 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
609 | gdb to use the event loop as the default command loop and we merge |
610 | event-top.c into this file, top.c */ | |
611 | /* static */ char *source_error; | |
c906108c SS |
612 | static int source_error_allocated; |
613 | ||
614 | /* Something to glom on to the start of error_pre_print if source_file_name | |
615 | is set. */ | |
392a587b | 616 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
617 | gdb to use the event loop as the default command loop and we merge |
618 | event-top.c into this file, top.c */ | |
619 | /* static */ char *source_pre_error; | |
c906108c SS |
620 | |
621 | /* Clean up on error during a "source" command (or execution of a | |
622 | user-defined command). */ | |
623 | ||
d318976c | 624 | void |
e41a3b1a | 625 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
626 | { |
627 | /* Restore the previous input stream. */ | |
628 | instream = stream; | |
629 | } | |
630 | ||
631 | /* Read commands from STREAM. */ | |
632 | void | |
fba45db2 | 633 | read_command_file (FILE *stream) |
c906108c SS |
634 | { |
635 | struct cleanup *cleanups; | |
636 | ||
e41a3b1a | 637 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 638 | instream = stream; |
c5aa993b | 639 | command_loop (); |
c906108c SS |
640 | do_cleanups (cleanups); |
641 | } | |
642 | \f | |
507f3c78 | 643 | void (*pre_init_ui_hook) (void); |
c906108c | 644 | |
e41a3b1a AC |
645 | #ifdef __MSDOS__ |
646 | void | |
647 | do_chdir_cleanup (void *old_dir) | |
648 | { | |
649 | chdir (old_dir); | |
b8c9b27d | 650 | xfree (old_dir); |
e41a3b1a AC |
651 | } |
652 | #endif | |
653 | ||
d318976c FN |
654 | /* Execute the line P as a command. |
655 | Pass FROM_TTY as second argument to the defining function. */ | |
c906108c | 656 | |
d318976c FN |
657 | void |
658 | execute_command (char *p, int from_tty) | |
c906108c | 659 | { |
52f0bd74 AC |
660 | struct cmd_list_element *c; |
661 | enum language flang; | |
d318976c FN |
662 | static int warned = 0; |
663 | char *line; | |
67e1e03a | 664 | |
d318976c | 665 | free_all_values (); |
c906108c | 666 | |
d318976c FN |
667 | /* Force cleanup of any alloca areas if using C alloca instead of |
668 | a builtin alloca. */ | |
669 | alloca (0); | |
c906108c | 670 | |
d318976c FN |
671 | /* This can happen when command_line_input hits end of file. */ |
672 | if (p == NULL) | |
673 | return; | |
c906108c | 674 | |
d318976c | 675 | serial_log_command (p); |
8b93c638 | 676 | |
d318976c FN |
677 | while (*p == ' ' || *p == '\t') |
678 | p++; | |
679 | if (*p) | |
8b93c638 | 680 | { |
d318976c FN |
681 | char *arg; |
682 | line = p; | |
8b93c638 | 683 | |
d318976c | 684 | c = lookup_cmd (&p, cmdlist, "", 0, 1); |
8b93c638 | 685 | |
d318976c FN |
686 | /* If the target is running, we allow only a limited set of |
687 | commands. */ | |
362646f5 | 688 | if (target_can_async_p () && target_executing) |
d8fe84e3 EZ |
689 | if (strcmp (c->name, "help") != 0 |
690 | && strcmp (c->name, "pwd") != 0 | |
691 | && strcmp (c->name, "show") != 0 | |
692 | && strcmp (c->name, "stop") != 0) | |
d318976c | 693 | error ("Cannot execute this command while the target is running."); |
8b93c638 | 694 | |
d318976c FN |
695 | /* Pass null arg rather than an empty one. */ |
696 | arg = *p ? p : 0; | |
8b93c638 | 697 | |
9f60d481 AC |
698 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
699 | while the is_complete_command(cfunc) test is just plain | |
700 | bogus. They should both be replaced by a test of the form | |
701 | c->strip_trailing_white_space_p. */ | |
702 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
703 | can't be replaced with func. This is because it is the | |
704 | cfunc, and not the func, that has the value that the | |
705 | is_complete_command hack is testing for. */ | |
706 | /* Clear off trailing whitespace, except for set and complete | |
707 | command. */ | |
d318976c FN |
708 | if (arg |
709 | && c->type != set_cmd | |
bbaca940 | 710 | && !is_complete_command (c)) |
8b93c638 | 711 | { |
d318976c FN |
712 | p = arg + strlen (arg) - 1; |
713 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
714 | p--; | |
715 | *(p + 1) = '\0'; | |
8b93c638 JM |
716 | } |
717 | ||
d318976c | 718 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 719 | execute_cmd_pre_hook (c); |
c906108c | 720 | |
d318976c FN |
721 | if (c->flags & DEPRECATED_WARN_USER) |
722 | deprecated_cmd_warning (&line); | |
c906108c | 723 | |
d318976c FN |
724 | if (c->class == class_user) |
725 | execute_user_command (c, arg); | |
726 | else if (c->type == set_cmd || c->type == show_cmd) | |
727 | do_setshow_command (arg, from_tty & caution, c); | |
f436dd25 | 728 | else if (!cmd_func_p (c)) |
d318976c | 729 | error ("That is not a command, just a help topic."); |
9a4105ab AC |
730 | else if (deprecated_call_command_hook) |
731 | deprecated_call_command_hook (c, arg, from_tty & caution); | |
d318976c | 732 | else |
f436dd25 | 733 | cmd_func (c, arg, from_tty & caution); |
d318976c FN |
734 | |
735 | /* If this command has been post-hooked, run the hook last. */ | |
5913bcb0 | 736 | execute_cmd_post_hook (c); |
c906108c | 737 | |
c906108c SS |
738 | } |
739 | ||
d318976c FN |
740 | /* Tell the user if the language has changed (except first time). */ |
741 | if (current_language != expected_language) | |
c906108c | 742 | { |
d318976c | 743 | if (language_mode == language_mode_auto) |
c906108c | 744 | { |
d318976c | 745 | language_info (1); /* Print what changed. */ |
c906108c | 746 | } |
d318976c | 747 | warned = 0; |
c906108c SS |
748 | } |
749 | ||
d318976c FN |
750 | /* Warn the user if the working language does not match the |
751 | language of the current frame. Only warn the user if we are | |
752 | actually running the program, i.e. there is a stack. */ | |
753 | /* FIXME: This should be cacheing the frame and only running when | |
754 | the frame changes. */ | |
755 | ||
756 | if (target_has_stack) | |
c906108c | 757 | { |
d318976c FN |
758 | flang = get_frame_language (); |
759 | if (!warned | |
760 | && flang != language_unknown | |
761 | && flang != current_language->la_language) | |
c906108c | 762 | { |
d318976c FN |
763 | printf_filtered ("%s\n", lang_frame_mismatch_warn); |
764 | warned = 1; | |
c906108c | 765 | } |
c906108c SS |
766 | } |
767 | } | |
768 | ||
d318976c FN |
769 | /* Read commands from `instream' and execute them |
770 | until end of file or error reading instream. */ | |
c906108c | 771 | |
d318976c FN |
772 | void |
773 | command_loop (void) | |
c906108c | 774 | { |
d318976c FN |
775 | struct cleanup *old_chain; |
776 | char *command; | |
777 | int stdin_is_tty = ISATTY (stdin); | |
778 | long time_at_cmd_start; | |
779 | #ifdef HAVE_SBRK | |
780 | long space_at_cmd_start = 0; | |
781 | #endif | |
782 | extern int display_time; | |
783 | extern int display_space; | |
c5aa993b | 784 | |
d318976c FN |
785 | while (instream && !feof (instream)) |
786 | { | |
d318976c FN |
787 | if (window_hook && instream == stdin) |
788 | (*window_hook) (instream, get_prompt ()); | |
c906108c | 789 | |
d318976c FN |
790 | quit_flag = 0; |
791 | if (instream == stdin && stdin_is_tty) | |
792 | reinitialize_more_filter (); | |
793 | old_chain = make_cleanup (null_cleanup, 0); | |
c906108c | 794 | |
d318976c FN |
795 | /* Get a command-line. This calls the readline package. */ |
796 | command = command_line_input (instream == stdin ? | |
797 | get_prompt () : (char *) NULL, | |
798 | instream == stdin, "prompt"); | |
d318976c FN |
799 | if (command == 0) |
800 | return; | |
c906108c | 801 | |
d318976c | 802 | time_at_cmd_start = get_run_time (); |
c906108c | 803 | |
d318976c | 804 | if (display_space) |
9e0b60a8 | 805 | { |
d318976c | 806 | #ifdef HAVE_SBRK |
d318976c | 807 | char *lim = (char *) sbrk (0); |
6dd77b81 | 808 | space_at_cmd_start = lim - lim_at_start; |
9e0b60a8 | 809 | #endif |
d318976c | 810 | } |
9e0b60a8 | 811 | |
d318976c FN |
812 | execute_command (command, instream == stdin); |
813 | /* Do any commands attached to breakpoint we stopped at. */ | |
814 | bpstat_do_actions (&stop_bpstat); | |
815 | do_cleanups (old_chain); | |
9e0b60a8 | 816 | |
d318976c | 817 | if (display_time) |
9e0b60a8 | 818 | { |
d318976c | 819 | long cmd_time = get_run_time () - time_at_cmd_start; |
9e0b60a8 | 820 | |
d318976c FN |
821 | printf_unfiltered ("Command execution time: %ld.%06ld\n", |
822 | cmd_time / 1000000, cmd_time % 1000000); | |
9e0b60a8 | 823 | } |
9e0b60a8 | 824 | |
d318976c | 825 | if (display_space) |
9e0b60a8 | 826 | { |
d318976c | 827 | #ifdef HAVE_SBRK |
d318976c | 828 | char *lim = (char *) sbrk (0); |
6dd77b81 | 829 | long space_now = lim - lim_at_start; |
d318976c FN |
830 | long space_diff = space_now - space_at_cmd_start; |
831 | ||
832 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", | |
833 | space_now, | |
834 | (space_diff >= 0 ? '+' : '-'), | |
835 | space_diff); | |
836 | #endif | |
9e0b60a8 | 837 | } |
9e0b60a8 | 838 | } |
9e0b60a8 | 839 | } |
9e0b60a8 | 840 | |
d318976c FN |
841 | /* Read commands from `instream' and execute them until end of file or |
842 | error reading instream. This command loop doesnt care about any | |
843 | such things as displaying time and space usage. If the user asks | |
844 | for those, they won't work. */ | |
845 | void | |
846 | simplified_command_loop (char *(*read_input_func) (char *), | |
847 | void (*execute_command_func) (char *, int)) | |
9e0b60a8 | 848 | { |
d318976c FN |
849 | struct cleanup *old_chain; |
850 | char *command; | |
851 | int stdin_is_tty = ISATTY (stdin); | |
9e0b60a8 | 852 | |
d318976c | 853 | while (instream && !feof (instream)) |
9e0b60a8 | 854 | { |
d318976c FN |
855 | quit_flag = 0; |
856 | if (instream == stdin && stdin_is_tty) | |
857 | reinitialize_more_filter (); | |
858 | old_chain = make_cleanup (null_cleanup, 0); | |
859 | ||
860 | /* Get a command-line. */ | |
861 | command = (*read_input_func) (instream == stdin ? | |
862 | get_prompt () : (char *) NULL); | |
9e0b60a8 | 863 | |
d318976c FN |
864 | if (command == 0) |
865 | return; | |
9e0b60a8 | 866 | |
d318976c | 867 | (*execute_command_func) (command, instream == stdin); |
9e0b60a8 | 868 | |
d318976c FN |
869 | /* Do any commands attached to breakpoint we stopped at. */ |
870 | bpstat_do_actions (&stop_bpstat); | |
9e0b60a8 | 871 | |
d318976c | 872 | do_cleanups (old_chain); |
c5aa993b | 873 | } |
9e0b60a8 | 874 | } |
d318976c FN |
875 | \f |
876 | /* Commands call this if they do not want to be repeated by null lines. */ | |
9e0b60a8 | 877 | |
d318976c FN |
878 | void |
879 | dont_repeat (void) | |
9e0b60a8 | 880 | { |
d318976c FN |
881 | if (server_command) |
882 | return; | |
9e0b60a8 | 883 | |
d318976c FN |
884 | /* If we aren't reading from standard input, we are saving the last |
885 | thing read from stdin in line and don't want to delete it. Null lines | |
886 | won't repeat here in any case. */ | |
887 | if (instream == stdin) | |
888 | *line = 0; | |
9e0b60a8 | 889 | } |
d318976c FN |
890 | \f |
891 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 892 | |
d318976c FN |
893 | It prints PROMPT_ARG once at the start. |
894 | Action is compatible with "readline", e.g. space for the result is | |
895 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 896 | |
d318976c FN |
897 | A NULL return means end of file. */ |
898 | char * | |
899 | gdb_readline (char *prompt_arg) | |
9e0b60a8 | 900 | { |
d318976c FN |
901 | int c; |
902 | char *result; | |
903 | int input_index = 0; | |
904 | int result_size = 80; | |
9e0b60a8 | 905 | |
d318976c | 906 | if (prompt_arg) |
9e0b60a8 | 907 | { |
d318976c FN |
908 | /* Don't use a _filtered function here. It causes the assumed |
909 | character position to be off, since the newline we read from | |
910 | the user is not accounted for. */ | |
911 | fputs_unfiltered (prompt_arg, gdb_stdout); | |
9e0b60a8 JM |
912 | gdb_flush (gdb_stdout); |
913 | } | |
914 | ||
d318976c | 915 | result = (char *) xmalloc (result_size); |
9e0b60a8 JM |
916 | |
917 | while (1) | |
918 | { | |
d318976c FN |
919 | /* Read from stdin if we are executing a user defined command. |
920 | This is the right thing for prompt_for_continue, at least. */ | |
921 | c = fgetc (instream ? instream : stdin); | |
9e0b60a8 | 922 | |
d318976c | 923 | if (c == EOF) |
9e0b60a8 | 924 | { |
d318976c FN |
925 | if (input_index > 0) |
926 | /* The last line does not end with a newline. Return it, and | |
927 | if we are called again fgetc will still return EOF and | |
928 | we'll return NULL then. */ | |
9e0b60a8 | 929 | break; |
b8c9b27d | 930 | xfree (result); |
d318976c | 931 | return NULL; |
9e0b60a8 | 932 | } |
c5aa993b | 933 | |
d318976c FN |
934 | if (c == '\n') |
935 | #ifndef CRLF_SOURCE_FILES | |
936 | break; | |
937 | #else | |
9e0b60a8 | 938 | { |
d318976c FN |
939 | if (input_index > 0 && result[input_index - 1] == '\r') |
940 | input_index--; | |
941 | break; | |
9e0b60a8 | 942 | } |
d318976c | 943 | #endif |
9e0b60a8 | 944 | |
d318976c FN |
945 | result[input_index++] = c; |
946 | while (input_index >= result_size) | |
9e0b60a8 | 947 | { |
d318976c FN |
948 | result_size *= 2; |
949 | result = (char *) xrealloc (result, result_size); | |
9e0b60a8 | 950 | } |
9e0b60a8 JM |
951 | } |
952 | ||
d318976c FN |
953 | result[input_index++] = '\0'; |
954 | return result; | |
9e0b60a8 JM |
955 | } |
956 | ||
d318976c FN |
957 | /* Variables which control command line editing and history |
958 | substitution. These variables are given default values at the end | |
959 | of this file. */ | |
960 | static int command_editing_p; | |
961 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
962 | gdb to use the event loop as the default command loop and we merge | |
963 | event-top.c into this file, top.c */ | |
964 | /* static */ int history_expansion_p; | |
965 | static int write_history_p; | |
966 | static int history_size; | |
967 | static char *history_filename; | |
9e0b60a8 | 968 | |
b4f5539f TT |
969 | /* This is like readline(), but it has some gdb-specific behavior. |
970 | gdb can use readline in both the synchronous and async modes during | |
971 | a single gdb invocation. At the ordinary top-level prompt we might | |
972 | be using the async readline. That means we can't use | |
973 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
974 | However, for a secondary prompt (" >", such as occurs during a | |
975 | `define'), gdb just calls readline() directly, running it in | |
976 | synchronous mode. So for operate-and-get-next to work in this | |
977 | situation, we have to switch the hooks around. That is what | |
978 | gdb_readline_wrapper is for. */ | |
979 | char * | |
980 | gdb_readline_wrapper (char *prompt) | |
981 | { | |
982 | /* Set the hook that works in this case. */ | |
362646f5 | 983 | if (after_char_processing_hook) |
b4f5539f TT |
984 | { |
985 | rl_pre_input_hook = (Function *) after_char_processing_hook; | |
986 | after_char_processing_hook = NULL; | |
987 | } | |
988 | ||
989 | return readline (prompt); | |
990 | } | |
991 | ||
9e0b60a8 | 992 | \f |
d318976c FN |
993 | #ifdef STOP_SIGNAL |
994 | static void | |
995 | stop_sig (int signo) | |
9e0b60a8 | 996 | { |
d318976c FN |
997 | #if STOP_SIGNAL == SIGTSTP |
998 | signal (SIGTSTP, SIG_DFL); | |
46711df8 MK |
999 | #if HAVE_SIGPROCMASK |
1000 | { | |
1001 | sigset_t zero; | |
1002 | ||
1003 | sigemptyset (&zero); | |
1004 | sigprocmask (SIG_SETMASK, &zero, 0); | |
1005 | } | |
1006 | #elif HAVE_SIGSETMASK | |
d318976c | 1007 | sigsetmask (0); |
46711df8 | 1008 | #endif |
d318976c FN |
1009 | kill (getpid (), SIGTSTP); |
1010 | signal (SIGTSTP, stop_sig); | |
1011 | #else | |
1012 | signal (STOP_SIGNAL, stop_sig); | |
1013 | #endif | |
1014 | printf_unfiltered ("%s", get_prompt ()); | |
1015 | gdb_flush (gdb_stdout); | |
9e0b60a8 | 1016 | |
d318976c FN |
1017 | /* Forget about any previous command -- null line now will do nothing. */ |
1018 | dont_repeat (); | |
9e0b60a8 | 1019 | } |
d318976c | 1020 | #endif /* STOP_SIGNAL */ |
9e0b60a8 | 1021 | |
d318976c | 1022 | /* Initialize signal handlers. */ |
64cdedad EZ |
1023 | static void |
1024 | float_handler (int signo) | |
1025 | { | |
1026 | /* This message is based on ANSI C, section 4.7. Note that integer | |
1027 | divide by zero causes this, so "float" is a misnomer. */ | |
1028 | signal (SIGFPE, float_handler); | |
1029 | error ("Erroneous arithmetic operation."); | |
1030 | } | |
1031 | ||
9e0b60a8 | 1032 | static void |
d318976c | 1033 | do_nothing (int signo) |
9e0b60a8 | 1034 | { |
d318976c FN |
1035 | /* Under System V the default disposition of a signal is reinstated after |
1036 | the signal is caught and delivered to an application process. On such | |
1037 | systems one must restore the replacement signal handler if one wishes | |
1038 | to continue handling the signal in one's program. On BSD systems this | |
1039 | is not needed but it is harmless, and it simplifies the code to just do | |
1040 | it unconditionally. */ | |
1041 | signal (signo, do_nothing); | |
9e0b60a8 JM |
1042 | } |
1043 | ||
467d8519 TT |
1044 | /* The current saved history number from operate-and-get-next. |
1045 | This is -1 if not valid. */ | |
1046 | static int operate_saved_history = -1; | |
1047 | ||
1048 | /* This is put on the appropriate hook and helps operate-and-get-next | |
1049 | do its work. */ | |
b9362cc7 | 1050 | static void |
5ae5f592 | 1051 | gdb_rl_operate_and_get_next_completion (void) |
467d8519 TT |
1052 | { |
1053 | int delta = where_history () - operate_saved_history; | |
1054 | /* The `key' argument to rl_get_previous_history is ignored. */ | |
1055 | rl_get_previous_history (delta, 0); | |
1056 | operate_saved_history = -1; | |
1057 | ||
1058 | /* readline doesn't automatically update the display for us. */ | |
1059 | rl_redisplay (); | |
1060 | ||
1061 | after_char_processing_hook = NULL; | |
1062 | rl_pre_input_hook = NULL; | |
1063 | } | |
1064 | ||
1065 | /* This is a gdb-local readline command handler. It accepts the | |
1066 | current command line (like RET does) and, if this command was taken | |
1067 | from the history, arranges for the next command in the history to | |
1068 | appear on the command line when the prompt returns. | |
1069 | We ignore the arguments. */ | |
1070 | static int | |
1071 | gdb_rl_operate_and_get_next (int count, int key) | |
1072 | { | |
b5686e99 MK |
1073 | int where; |
1074 | ||
362646f5 AC |
1075 | /* Use the async hook. */ |
1076 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
467d8519 | 1077 | |
b5686e99 MK |
1078 | /* Find the current line, and find the next line to use. */ |
1079 | where = where_history(); | |
1080 | ||
1081 | /* FIXME: kettenis/20020817: max_input_history is renamed into | |
1082 | history_max_entries in readline-4.2. When we do a new readline | |
1083 | import, we should probably change it here too, even though | |
1084 | readline maintains backwards compatibility for now by still | |
1085 | defining max_input_history. */ | |
1086 | if ((history_is_stifled () && (history_length >= max_input_history)) || | |
1087 | (where >= history_length - 1)) | |
1088 | operate_saved_history = where; | |
1089 | else | |
1090 | operate_saved_history = where + 1; | |
1091 | ||
467d8519 TT |
1092 | return rl_newline (1, key); |
1093 | } | |
1094 | \f | |
d318976c FN |
1095 | /* Read one line from the command input stream `instream' |
1096 | into the local static buffer `linebuffer' (whose current length | |
1097 | is `linelength'). | |
1098 | The buffer is made bigger as necessary. | |
1099 | Returns the address of the start of the line. | |
9e0b60a8 | 1100 | |
d318976c | 1101 | NULL is returned for end of file. |
9e0b60a8 | 1102 | |
d318976c FN |
1103 | *If* the instream == stdin & stdin is a terminal, the line read |
1104 | is copied into the file line saver (global var char *line, | |
1105 | length linesize) so that it can be duplicated. | |
9e0b60a8 | 1106 | |
d318976c FN |
1107 | This routine either uses fancy command line editing or |
1108 | simple input as the user has requested. */ | |
10689f25 | 1109 | |
d318976c FN |
1110 | char * |
1111 | command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) | |
9e0b60a8 | 1112 | { |
d318976c FN |
1113 | static char *linebuffer = 0; |
1114 | static unsigned linelength = 0; | |
52f0bd74 | 1115 | char *p; |
d318976c FN |
1116 | char *p1; |
1117 | char *rl; | |
1118 | char *local_prompt = prompt_arg; | |
1119 | char *nline; | |
1120 | char got_eof = 0; | |
1121 | ||
1122 | /* The annotation suffix must be non-NULL. */ | |
1123 | if (annotation_suffix == NULL) | |
1124 | annotation_suffix = ""; | |
9e0b60a8 | 1125 | |
d318976c FN |
1126 | if (annotation_level > 1 && instream == stdin) |
1127 | { | |
1128 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
1129 | + strlen (annotation_suffix) + 40); | |
1130 | if (prompt_arg == NULL) | |
1131 | local_prompt[0] = '\0'; | |
1132 | else | |
1133 | strcpy (local_prompt, prompt_arg); | |
1134 | strcat (local_prompt, "\n\032\032"); | |
1135 | strcat (local_prompt, annotation_suffix); | |
1136 | strcat (local_prompt, "\n"); | |
1137 | } | |
9e0b60a8 | 1138 | |
d318976c | 1139 | if (linebuffer == 0) |
9e0b60a8 | 1140 | { |
d318976c FN |
1141 | linelength = 80; |
1142 | linebuffer = (char *) xmalloc (linelength); | |
9e0b60a8 | 1143 | } |
9e0b60a8 | 1144 | |
d318976c | 1145 | p = linebuffer; |
9e0b60a8 | 1146 | |
d318976c FN |
1147 | /* Control-C quits instantly if typed while in this loop |
1148 | since it should not wait until the user types a newline. */ | |
1149 | immediate_quit++; | |
1150 | #ifdef STOP_SIGNAL | |
1151 | if (job_control) | |
362646f5 | 1152 | signal (STOP_SIGNAL, handle_stop_sig); |
d318976c FN |
1153 | #endif |
1154 | ||
1155 | while (1) | |
9e0b60a8 | 1156 | { |
d318976c FN |
1157 | /* Make sure that all output has been output. Some machines may let |
1158 | you get away with leaving out some of the gdb_flush, but not all. */ | |
1159 | wrap_here (""); | |
1160 | gdb_flush (gdb_stdout); | |
1161 | gdb_flush (gdb_stderr); | |
1162 | ||
1163 | if (source_file_name != NULL) | |
1164 | { | |
1165 | ++source_line_number; | |
1166 | sprintf (source_error, | |
1167 | "%s%s:%d: Error in sourced command file:\n", | |
1168 | source_pre_error, | |
1169 | source_file_name, | |
1170 | source_line_number); | |
1171 | error_pre_print = source_error; | |
1172 | } | |
1173 | ||
1174 | if (annotation_level > 1 && instream == stdin) | |
1175 | { | |
306d9ac5 DC |
1176 | puts_unfiltered ("\n\032\032pre-"); |
1177 | puts_unfiltered (annotation_suffix); | |
1178 | puts_unfiltered ("\n"); | |
d318976c FN |
1179 | } |
1180 | ||
1181 | /* Don't use fancy stuff if not talking to stdin. */ | |
9a4105ab | 1182 | if (deprecated_readline_hook && instream == NULL) |
d318976c | 1183 | { |
9a4105ab | 1184 | rl = (*deprecated_readline_hook) (local_prompt); |
d318976c FN |
1185 | } |
1186 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
1187 | { | |
b4f5539f | 1188 | rl = gdb_readline_wrapper (local_prompt); |
d318976c | 1189 | } |
9e0b60a8 | 1190 | else |
d318976c FN |
1191 | { |
1192 | rl = gdb_readline (local_prompt); | |
1193 | } | |
9e0b60a8 | 1194 | |
d318976c FN |
1195 | if (annotation_level > 1 && instream == stdin) |
1196 | { | |
306d9ac5 DC |
1197 | puts_unfiltered ("\n\032\032post-"); |
1198 | puts_unfiltered (annotation_suffix); | |
1199 | puts_unfiltered ("\n"); | |
d318976c | 1200 | } |
9e0b60a8 | 1201 | |
d318976c | 1202 | if (!rl || rl == (char *) EOF) |
9e0b60a8 | 1203 | { |
d318976c FN |
1204 | got_eof = 1; |
1205 | break; | |
9e0b60a8 | 1206 | } |
d318976c FN |
1207 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
1208 | { | |
1209 | linelength = strlen (rl) + 1 + (p - linebuffer); | |
1210 | nline = (char *) xrealloc (linebuffer, linelength); | |
1211 | p += nline - linebuffer; | |
1212 | linebuffer = nline; | |
1213 | } | |
1214 | p1 = rl; | |
1215 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1216 | if this was just a newline) */ | |
1217 | while (*p1) | |
1218 | *p++ = *p1++; | |
9e0b60a8 | 1219 | |
b8c9b27d | 1220 | xfree (rl); /* Allocated in readline. */ |
9e0b60a8 | 1221 | |
d318976c FN |
1222 | if (p == linebuffer || *(p - 1) != '\\') |
1223 | break; | |
9e0b60a8 | 1224 | |
d318976c FN |
1225 | p--; /* Put on top of '\'. */ |
1226 | local_prompt = (char *) 0; | |
1227 | } | |
9e0b60a8 | 1228 | |
d318976c FN |
1229 | #ifdef STOP_SIGNAL |
1230 | if (job_control) | |
1231 | signal (STOP_SIGNAL, SIG_DFL); | |
1232 | #endif | |
1233 | immediate_quit--; | |
9e0b60a8 | 1234 | |
d318976c FN |
1235 | if (got_eof) |
1236 | return NULL; | |
9e0b60a8 | 1237 | |
d318976c FN |
1238 | #define SERVER_COMMAND_LENGTH 7 |
1239 | server_command = | |
1240 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
bf896cb0 | 1241 | && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0; |
d318976c | 1242 | if (server_command) |
9e0b60a8 | 1243 | { |
d318976c FN |
1244 | /* Note that we don't set `line'. Between this and the check in |
1245 | dont_repeat, this insures that repeating will still do the | |
1246 | right thing. */ | |
1247 | *p = '\0'; | |
1248 | return linebuffer + SERVER_COMMAND_LENGTH; | |
9e0b60a8 | 1249 | } |
9e0b60a8 | 1250 | |
d318976c FN |
1251 | /* Do history expansion if that is wished. */ |
1252 | if (history_expansion_p && instream == stdin | |
1253 | && ISATTY (instream)) | |
1254 | { | |
1255 | char *history_value; | |
1256 | int expanded; | |
9e0b60a8 | 1257 | |
d318976c FN |
1258 | *p = '\0'; /* Insert null now. */ |
1259 | expanded = history_expand (linebuffer, &history_value); | |
1260 | if (expanded) | |
1261 | { | |
1262 | /* Print the changes. */ | |
1263 | printf_unfiltered ("%s\n", history_value); | |
9e0b60a8 | 1264 | |
d318976c FN |
1265 | /* If there was an error, call this function again. */ |
1266 | if (expanded < 0) | |
1267 | { | |
b8c9b27d | 1268 | xfree (history_value); |
d318976c FN |
1269 | return command_line_input (prompt_arg, repeat, annotation_suffix); |
1270 | } | |
1271 | if (strlen (history_value) > linelength) | |
1272 | { | |
1273 | linelength = strlen (history_value) + 1; | |
1274 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1275 | } | |
1276 | strcpy (linebuffer, history_value); | |
1277 | p = linebuffer + strlen (linebuffer); | |
b8c9b27d | 1278 | xfree (history_value); |
d318976c FN |
1279 | } |
1280 | } | |
9e0b60a8 | 1281 | |
d318976c FN |
1282 | /* If we just got an empty line, and that is supposed |
1283 | to repeat the previous command, return the value in the | |
1284 | global buffer. */ | |
1285 | if (repeat && p == linebuffer) | |
1286 | return line; | |
1287 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); | |
1288 | if (repeat && !*p1) | |
1289 | return line; | |
9e0b60a8 | 1290 | |
d318976c | 1291 | *p = 0; |
9e0b60a8 | 1292 | |
d318976c FN |
1293 | /* Add line to history if appropriate. */ |
1294 | if (instream == stdin | |
1295 | && ISATTY (stdin) && *linebuffer) | |
1296 | add_history (linebuffer); | |
9e0b60a8 | 1297 | |
d318976c FN |
1298 | /* Note: lines consisting solely of comments are added to the command |
1299 | history. This is useful when you type a command, and then | |
1300 | realize you don't want to execute it quite yet. You can comment | |
1301 | out the command and then later fetch it from the value history | |
1302 | and remove the '#'. The kill ring is probably better, but some | |
1303 | people are in the habit of commenting things out. */ | |
1304 | if (*p1 == '#') | |
1305 | *p1 = '\0'; /* Found a comment. */ | |
9e0b60a8 | 1306 | |
d318976c FN |
1307 | /* Save into global buffer if appropriate. */ |
1308 | if (repeat) | |
1309 | { | |
1310 | if (linelength > linesize) | |
1311 | { | |
1312 | line = xrealloc (line, linelength); | |
1313 | linesize = linelength; | |
1314 | } | |
1315 | strcpy (line, linebuffer); | |
1316 | return line; | |
1317 | } | |
9e0b60a8 | 1318 | |
d318976c | 1319 | return linebuffer; |
9e0b60a8 JM |
1320 | } |
1321 | \f | |
1322 | /* Print the GDB banner. */ | |
1323 | void | |
fba45db2 | 1324 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1325 | { |
1326 | /* From GNU coding standards, first line is meant to be easy for a | |
1327 | program to parse, and is just canonical program name and version | |
1328 | number, which starts after last space. */ | |
1329 | ||
1330 | fprintf_filtered (stream, "GNU gdb %s\n", version); | |
1331 | ||
1332 | /* Second line is a copyright notice. */ | |
1333 | ||
0bc2134e | 1334 | fprintf_filtered (stream, "Copyright 2004 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1335 | |
1336 | /* Following the copyright is a brief statement that the program is | |
1337 | free software, that users are free to copy and change it on | |
1338 | certain conditions, that it is covered by the GNU GPL, and that | |
1339 | there is no warranty. */ | |
1340 | ||
1341 | fprintf_filtered (stream, "\ | |
1342 | GDB is free software, covered by the GNU General Public License, and you are\n\ | |
1343 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
1344 | Type \"show copying\" to see the conditions.\n\ | |
1345 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
1346 | ||
1347 | /* After the required info we print the configuration information. */ | |
1348 | ||
1349 | fprintf_filtered (stream, "This GDB was configured as \""); | |
6314a349 | 1350 | if (strcmp (host_name, target_name) != 0) |
9e0b60a8 JM |
1351 | { |
1352 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
1353 | } | |
1354 | else | |
1355 | { | |
1356 | fprintf_filtered (stream, "%s", host_name); | |
1357 | } | |
1358 | fprintf_filtered (stream, "\"."); | |
1359 | } | |
9e0b60a8 JM |
1360 | \f |
1361 | /* get_prompt: access method for the GDB prompt string. */ | |
1362 | ||
9e0b60a8 | 1363 | char * |
fba45db2 | 1364 | get_prompt (void) |
9e0b60a8 | 1365 | { |
362646f5 | 1366 | return PROMPT (0); |
9e0b60a8 JM |
1367 | } |
1368 | ||
1369 | void | |
fba45db2 | 1370 | set_prompt (char *s) |
9e0b60a8 JM |
1371 | { |
1372 | /* ??rehrauer: I don't know why this fails, since it looks as though | |
1373 | assignments to prompt are wrapped in calls to savestring... | |
c5aa993b | 1374 | if (prompt != NULL) |
b8c9b27d | 1375 | xfree (prompt); |
c5aa993b | 1376 | */ |
362646f5 | 1377 | PROMPT (0) = savestring (s, strlen (s)); |
9e0b60a8 | 1378 | } |
9e0b60a8 | 1379 | \f |
c5aa993b | 1380 | |
9e0b60a8 JM |
1381 | /* If necessary, make the user confirm that we should quit. Return |
1382 | non-zero if we should quit, zero if we shouldn't. */ | |
1383 | ||
1384 | int | |
fba45db2 | 1385 | quit_confirm (void) |
9e0b60a8 | 1386 | { |
39f77062 | 1387 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
9e0b60a8 JM |
1388 | { |
1389 | char *s; | |
1390 | ||
1391 | /* This is something of a hack. But there's no reliable way to | |
c5aa993b JM |
1392 | see if a GUI is running. The `use_windows' variable doesn't |
1393 | cut it. */ | |
9a4105ab | 1394 | if (deprecated_init_ui_hook) |
9e0b60a8 JM |
1395 | s = "A debugging session is active.\nDo you still want to close the debugger?"; |
1396 | else if (attach_flag) | |
1397 | s = "The program is running. Quit anyway (and detach it)? "; | |
1398 | else | |
1399 | s = "The program is running. Exit anyway? "; | |
1400 | ||
306d9ac5 | 1401 | if (!query ("%s", s)) |
9e0b60a8 JM |
1402 | return 0; |
1403 | } | |
1404 | ||
1405 | return 1; | |
1406 | } | |
1407 | ||
b0abbc58 | 1408 | /* Helper routine for quit_force that requires error handling. */ |
9e0b60a8 | 1409 | |
b0abbc58 | 1410 | struct qt_args |
9e0b60a8 | 1411 | { |
b0abbc58 JJ |
1412 | char *args; |
1413 | int from_tty; | |
1414 | }; | |
9e0b60a8 | 1415 | |
b0abbc58 JJ |
1416 | static int |
1417 | quit_target (void *arg) | |
1418 | { | |
1419 | struct qt_args *qt = (struct qt_args *)arg; | |
9e0b60a8 | 1420 | |
39f77062 | 1421 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
9e0b60a8 JM |
1422 | { |
1423 | if (attach_flag) | |
b0abbc58 | 1424 | target_detach (qt->args, qt->from_tty); |
9e0b60a8 | 1425 | else |
b0abbc58 | 1426 | target_kill (); |
9e0b60a8 JM |
1427 | } |
1428 | ||
1429 | /* UDI wants this, to kill the TIP. */ | |
f1c07ab0 | 1430 | target_close (¤t_target, 1); |
9e0b60a8 JM |
1431 | |
1432 | /* Save the history information if it is appropriate to do so. */ | |
1433 | if (write_history_p && history_filename) | |
1434 | write_history (history_filename); | |
1435 | ||
c5aa993b | 1436 | do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
9e0b60a8 | 1437 | |
b0abbc58 JJ |
1438 | return 0; |
1439 | } | |
1440 | ||
1441 | /* Quit without asking for confirmation. */ | |
1442 | ||
1443 | void | |
1444 | quit_force (char *args, int from_tty) | |
1445 | { | |
1446 | int exit_code = 0; | |
365c70b1 | 1447 | struct qt_args qt; |
b0abbc58 JJ |
1448 | |
1449 | /* An optional expression may be used to cause gdb to terminate with the | |
1450 | value of that expression. */ | |
1451 | if (args) | |
1452 | { | |
1453 | struct value *val = parse_and_eval (args); | |
1454 | ||
1455 | exit_code = (int) value_as_long (val); | |
1456 | } | |
1457 | ||
365c70b1 JJ |
1458 | qt.args = args; |
1459 | qt.from_tty = from_tty; | |
1460 | ||
b0abbc58 | 1461 | /* We want to handle any quit errors and exit regardless. */ |
365c70b1 | 1462 | catch_errors (quit_target, &qt, |
b0abbc58 JJ |
1463 | "Quitting: ", RETURN_MASK_ALL); |
1464 | ||
9e0b60a8 JM |
1465 | exit (exit_code); |
1466 | } | |
1467 | ||
9e0b60a8 JM |
1468 | /* Returns whether GDB is running on a terminal and whether the user |
1469 | desires that questions be asked of them on that terminal. */ | |
1470 | ||
1471 | int | |
fba45db2 | 1472 | input_from_terminal_p (void) |
9e0b60a8 JM |
1473 | { |
1474 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
1475 | } | |
1476 | \f | |
9e0b60a8 | 1477 | static void |
fba45db2 | 1478 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1479 | { |
c5aa993b JM |
1480 | *line = 0; /* Can't call dont_repeat here because we're not |
1481 | necessarily reading from stdin. */ | |
9e0b60a8 JM |
1482 | } |
1483 | \f | |
1484 | /* Functions to manipulate command line editing control variables. */ | |
1485 | ||
1486 | /* Number of commands to print in each call to show_commands. */ | |
1487 | #define Hist_print 10 | |
d318976c | 1488 | void |
fba45db2 | 1489 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1490 | { |
1491 | /* Index for history commands. Relative to history_base. */ | |
1492 | int offset; | |
1493 | ||
1494 | /* Number of the history entry which we are planning to display next. | |
1495 | Relative to history_base. */ | |
1496 | static int num = 0; | |
1497 | ||
1498 | /* The first command in the history which doesn't exist (i.e. one more | |
1499 | than the number of the last command). Relative to history_base. */ | |
1500 | int hist_len; | |
1501 | ||
9e0b60a8 JM |
1502 | /* Print out some of the commands from the command history. */ |
1503 | /* First determine the length of the history list. */ | |
1504 | hist_len = history_size; | |
1505 | for (offset = 0; offset < history_size; offset++) | |
1506 | { | |
1507 | if (!history_get (history_base + offset)) | |
1508 | { | |
1509 | hist_len = offset; | |
1510 | break; | |
1511 | } | |
1512 | } | |
1513 | ||
1514 | if (args) | |
1515 | { | |
1516 | if (args[0] == '+' && args[1] == '\0') | |
1517 | /* "info editing +" should print from the stored position. */ | |
1518 | ; | |
1519 | else | |
1520 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1521 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1522 | } |
1523 | /* "show commands" means print the last Hist_print commands. */ | |
1524 | else | |
1525 | { | |
1526 | num = hist_len - Hist_print; | |
1527 | } | |
1528 | ||
1529 | if (num < 0) | |
1530 | num = 0; | |
1531 | ||
1532 | /* If there are at least Hist_print commands, we want to display the last | |
1533 | Hist_print rather than, say, the last 6. */ | |
1534 | if (hist_len - num < Hist_print) | |
1535 | { | |
1536 | num = hist_len - Hist_print; | |
1537 | if (num < 0) | |
1538 | num = 0; | |
1539 | } | |
1540 | ||
1541 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
1542 | { | |
1543 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1544 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1545 | } |
1546 | ||
1547 | /* The next command we want to display is the next one that we haven't | |
1548 | displayed yet. */ | |
1549 | num += Hist_print; | |
1550 | ||
1551 | /* If the user repeats this command with return, it should do what | |
1552 | "show commands +" does. This is unnecessary if arg is null, | |
1553 | because "show commands +" is not useful after "show commands". */ | |
1554 | if (from_tty && args) | |
1555 | { | |
1556 | args[0] = '+'; | |
1557 | args[1] = '\0'; | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | /* Called by do_setshow_command. */ | |
9e0b60a8 | 1562 | static void |
fba45db2 | 1563 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
1564 | { |
1565 | if (history_size == INT_MAX) | |
1566 | unstifle_history (); | |
1567 | else if (history_size >= 0) | |
1568 | stifle_history (history_size); | |
1569 | else | |
1570 | { | |
1571 | history_size = INT_MAX; | |
1572 | error ("History size must be non-negative"); | |
1573 | } | |
1574 | } | |
1575 | ||
d318976c | 1576 | void |
fba45db2 | 1577 | set_history (char *args, int from_tty) |
9e0b60a8 JM |
1578 | { |
1579 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
1580 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
1581 | } | |
1582 | ||
d318976c | 1583 | void |
fba45db2 | 1584 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1585 | { |
1586 | cmd_show_list (showhistlist, from_tty, ""); | |
1587 | } | |
1588 | ||
1589 | int info_verbose = 0; /* Default verbose msgs off */ | |
1590 | ||
1591 | /* Called by do_setshow_command. An elaborate joke. */ | |
d318976c | 1592 | void |
fba45db2 | 1593 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
1594 | { |
1595 | char *cmdname = "verbose"; | |
1596 | struct cmd_list_element *showcmd; | |
1597 | ||
1598 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1599 | ||
1600 | if (info_verbose) | |
1601 | { | |
1602 | c->doc = "Set verbose printing of informational messages."; | |
1603 | showcmd->doc = "Show verbose printing of informational messages."; | |
1604 | } | |
1605 | else | |
1606 | { | |
1607 | c->doc = "Set verbosity."; | |
1608 | showcmd->doc = "Show verbosity."; | |
1609 | } | |
1610 | } | |
1611 | ||
9e0b60a8 JM |
1612 | /* Init the history buffer. Note that we are called after the init file(s) |
1613 | * have been read so that the user can change the history file via his | |
1614 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1615 | * overrides all of this. | |
1616 | */ | |
1617 | ||
1618 | void | |
fba45db2 | 1619 | init_history (void) |
9e0b60a8 JM |
1620 | { |
1621 | char *tmpenv; | |
1622 | ||
1623 | tmpenv = getenv ("HISTSIZE"); | |
1624 | if (tmpenv) | |
1625 | history_size = atoi (tmpenv); | |
1626 | else if (!history_size) | |
1627 | history_size = 256; | |
1628 | ||
1629 | stifle_history (history_size); | |
1630 | ||
1631 | tmpenv = getenv ("GDBHISTFILE"); | |
1632 | if (tmpenv) | |
c5aa993b JM |
1633 | history_filename = savestring (tmpenv, strlen (tmpenv)); |
1634 | else if (!history_filename) | |
1635 | { | |
1636 | /* We include the current directory so that if the user changes | |
1637 | directories the file written will be the same as the one | |
1638 | that was read. */ | |
a0b3c4fd | 1639 | #ifdef __MSDOS__ |
eb2f494a AC |
1640 | /* No leading dots in file names are allowed on MSDOS. */ |
1641 | history_filename = concat (current_directory, "/_gdb_history", NULL); | |
a0b3c4fd | 1642 | #else |
c5aa993b | 1643 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
a0b3c4fd | 1644 | #endif |
c5aa993b | 1645 | } |
9e0b60a8 JM |
1646 | read_history (history_filename); |
1647 | } | |
1648 | ||
1649 | static void | |
fba45db2 | 1650 | init_main (void) |
9e0b60a8 JM |
1651 | { |
1652 | struct cmd_list_element *c; | |
1653 | ||
362646f5 AC |
1654 | /* initialize the prompt stack to a simple "(gdb) " prompt or to |
1655 | whatever the DEFAULT_PROMPT is. */ | |
1656 | the_prompts.top = 0; | |
1657 | PREFIX (0) = ""; | |
1658 | PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); | |
1659 | SUFFIX (0) = ""; | |
1660 | /* Set things up for annotation_level > 1, if the user ever decides | |
1661 | to use it. */ | |
1662 | async_annotation_suffix = "prompt"; | |
1663 | /* Set the variable associated with the setshow prompt command. */ | |
1664 | new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0))); | |
1665 | ||
1666 | /* If gdb was started with --annotate=2, this is equivalent to the | |
1667 | user entering the command 'set annotate 2' at the gdb prompt, so | |
1668 | we need to do extra processing. */ | |
1669 | if (annotation_level > 1) | |
1670 | set_async_annotation_level (NULL, 0, NULL); | |
9e0b60a8 JM |
1671 | |
1672 | /* Set the important stuff up for command editing. */ | |
1673 | command_editing_p = 1; | |
9e0b60a8 JM |
1674 | history_expansion_p = 0; |
1675 | write_history_p = 0; | |
1676 | ||
1677 | /* Setup important stuff for command line editing. */ | |
38017ce8 | 1678 | rl_completion_entry_function = readline_line_completion_function; |
51065942 | 1679 | rl_completer_word_break_characters = default_word_break_characters (); |
d318976c | 1680 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); |
9e0b60a8 | 1681 | rl_readline_name = "gdb"; |
7cb3ec5e | 1682 | rl_terminal_name = getenv ("TERM"); |
9e0b60a8 | 1683 | |
467d8519 TT |
1684 | /* The name for this defun comes from Bash, where it originated. |
1685 | 15 is Control-o, the same binding this function has in Bash. */ | |
1686 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1687 | ||
362646f5 AC |
1688 | c = add_set_cmd ("prompt", class_support, var_string, |
1689 | (char *) &new_async_prompt, "Set gdb's prompt", | |
1690 | &setlist); | |
1691 | deprecated_add_show_from_set (c, &showlist); | |
1692 | set_cmd_sfunc (c, set_async_prompt); | |
9e0b60a8 | 1693 | |
9e0b60a8 JM |
1694 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ |
1695 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
1696 | hitting return."); | |
1697 | ||
362646f5 AC |
1698 | c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p, |
1699 | "Set editing of command lines as they are typed.\n\ | |
9e0b60a8 JM |
1700 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
1701 | Without an argument, command line editing is enabled. To edit, use\n\ | |
1702 | EMACS-like or VI-like commands like control-P or ESC.", &setlist); | |
1703 | ||
362646f5 AC |
1704 | deprecated_add_show_from_set (c, &showlist); |
1705 | set_cmd_sfunc (c, set_async_editing_command); | |
9e0b60a8 | 1706 | |
cb1a6d5f | 1707 | deprecated_add_show_from_set |
c5aa993b JM |
1708 | (add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p, |
1709 | "Set saving of the history record on exit.\n\ | |
9e0b60a8 JM |
1710 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
1711 | Without an argument, saving is enabled.", &sethistlist), | |
1712 | &showhistlist); | |
1713 | ||
c5aa993b | 1714 | c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size, |
d4654627 | 1715 | "Set the size of the command history,\n\ |
9e0b60a8 | 1716 | ie. the number of previous commands to keep a record of.", &sethistlist); |
cb1a6d5f | 1717 | deprecated_add_show_from_set (c, &showhistlist); |
9f60d481 | 1718 | set_cmd_sfunc (c, set_history_size_command); |
9e0b60a8 | 1719 | |
7a1bd56a EZ |
1720 | c = add_set_cmd ("filename", no_class, var_filename, |
1721 | (char *) &history_filename, | |
1722 | "Set the filename in which to record the command history\n\ | |
d4654627 | 1723 | (the list of previous commands of which a record is kept).", &sethistlist); |
5ba2abeb | 1724 | set_cmd_completer (c, filename_completer); |
cb1a6d5f | 1725 | deprecated_add_show_from_set (c, &showhistlist); |
9e0b60a8 | 1726 | |
cb1a6d5f | 1727 | deprecated_add_show_from_set |
9e0b60a8 | 1728 | (add_set_cmd ("confirm", class_support, var_boolean, |
c5aa993b | 1729 | (char *) &caution, |
9e0b60a8 JM |
1730 | "Set whether to confirm potentially dangerous operations.", |
1731 | &setlist), | |
1732 | &showlist); | |
1733 | ||
362646f5 AC |
1734 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
1735 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
1736 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
1737 | 2 == output annotated suitably for use by programs that control GDB.", | |
362646f5 AC |
1738 | &setlist); |
1739 | deprecated_add_show_from_set (c, &showlist); | |
1740 | set_cmd_sfunc (c, set_async_annotation_level); | |
1741 | ||
1742 | deprecated_add_show_from_set | |
1743 | (add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p, | |
1744 | "Set notification of completion for asynchronous execution commands.\n\ | |
104c1213 | 1745 | Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist), |
362646f5 | 1746 | &showlist); |
9e0b60a8 | 1747 | } |
64cdedad EZ |
1748 | |
1749 | void | |
1750 | gdb_init (char *argv0) | |
1751 | { | |
1752 | if (pre_init_ui_hook) | |
1753 | pre_init_ui_hook (); | |
1754 | ||
1755 | /* Run the init function of each source file */ | |
1756 | ||
1757 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
1758 | current_directory = gdb_dirbuf; | |
1759 | ||
1760 | #ifdef __MSDOS__ | |
1761 | /* Make sure we return to the original directory upon exit, come | |
1762 | what may, since the OS doesn't do that for us. */ | |
1763 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1764 | #endif | |
1765 | ||
1766 | init_cmd_lists (); /* This needs to be done first */ | |
1767 | initialize_targets (); /* Setup target_terminal macros for utils.c */ | |
1768 | initialize_utils (); /* Make errors and warnings possible */ | |
1769 | initialize_all_files (); | |
1770 | initialize_current_architecture (); | |
1771 | init_cli_cmds(); | |
1772 | init_main (); /* But that omits this file! Do it now */ | |
1773 | ||
362646f5 | 1774 | async_init_signals (); |
64cdedad EZ |
1775 | |
1776 | /* We need a default language for parsing expressions, so simple things like | |
1777 | "set width 0" won't fail if no language is explicitly set in a config file | |
1778 | or implicitly set by reading an executable during startup. */ | |
1779 | set_language (language_c); | |
1780 | expected_language = current_language; /* don't warn about the change. */ | |
1781 | ||
9a4105ab AC |
1782 | /* Allow another UI to initialize. If the UI fails to initialize, |
1783 | and it wants GDB to revert to the CLI, it should clear | |
1784 | deprecated_init_ui_hook. */ | |
1785 | if (deprecated_init_ui_hook) | |
1786 | deprecated_init_ui_hook (argv0); | |
64cdedad | 1787 | } |