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, | |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 | |
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" | |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "inferior.h" | |
042be3a9 | 32 | #include <signal.h> |
c906108c SS |
33 | #include "target.h" |
34 | #include "breakpoint.h" | |
35 | #include "gdbtypes.h" | |
36 | #include "expression.h" | |
37 | #include "value.h" | |
38 | #include "language.h" | |
c5aa993b | 39 | #include "terminal.h" /* For job_control. */ |
c906108c | 40 | #include "annotate.h" |
c5f0f3d0 | 41 | #include "completer.h" |
c906108c | 42 | #include "top.h" |
d4f3574e | 43 | #include "version.h" |
210661e7 | 44 | #include "serial.h" |
d16aafd8 | 45 | #include "doublest.h" |
f9c696d2 | 46 | #include "gdb_assert.h" |
c906108c SS |
47 | |
48 | /* readline include files */ | |
49 | #include <readline/readline.h> | |
50 | #include <readline/history.h> | |
51 | ||
52 | /* readline defines this. */ | |
53 | #undef savestring | |
54 | ||
55 | #include <sys/types.h> | |
c906108c | 56 | |
c4093a6a | 57 | #include <setjmp.h> |
2acceee2 | 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 | ||
84 | int use_windows = 1; | |
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 | |
149 | Hitachi E7000 ICE didn't always respond in a timely manner. | |
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 | ||
c906108c SS |
173 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ |
174 | ||
175 | #ifndef STOP_SIGNAL | |
176 | #ifdef SIGTSTP | |
177 | #define STOP_SIGNAL SIGTSTP | |
a14ed312 | 178 | static void stop_sig (int); |
c906108c SS |
179 | #endif |
180 | #endif | |
181 | ||
c906108c SS |
182 | /* Hooks for alternate command interfaces. */ |
183 | ||
184 | /* Called after most modules have been initialized, but before taking users | |
1ad24239 KS |
185 | command file. |
186 | ||
187 | If the UI fails to initialize and it wants GDB to continue | |
188 | using the default UI, then it should clear this hook before returning. */ | |
c906108c | 189 | |
507f3c78 | 190 | void (*init_ui_hook) (char *argv0); |
7a292a7a SS |
191 | |
192 | /* This hook is called from within gdb's many mini-event loops which could | |
193 | steal control from a real user interface's event loop. It returns | |
194 | non-zero if the user is requesting a detach, zero otherwise. */ | |
195 | ||
507f3c78 | 196 | int (*ui_loop_hook) (int); |
c906108c SS |
197 | |
198 | /* Called instead of command_loop at top level. Can be invoked via | |
b5a2688f | 199 | throw_exception(). */ |
c906108c | 200 | |
507f3c78 | 201 | void (*command_loop_hook) (void); |
c906108c SS |
202 | |
203 | ||
c906108c SS |
204 | /* Called from print_frame_info to list the line we stopped in. */ |
205 | ||
507f3c78 KB |
206 | void (*print_frame_info_listing_hook) (struct symtab * s, int line, |
207 | int stopline, int noerror); | |
c906108c SS |
208 | /* Replaces most of query. */ |
209 | ||
507f3c78 | 210 | int (*query_hook) (const char *, va_list); |
c906108c SS |
211 | |
212 | /* Replaces most of warning. */ | |
213 | ||
507f3c78 | 214 | void (*warning_hook) (const char *, va_list); |
c906108c | 215 | |
c906108c SS |
216 | /* These three functions support getting lines of text from the user. They |
217 | are used in sequence. First readline_begin_hook is called with a text | |
218 | string that might be (for example) a message for the user to type in a | |
219 | sequence of commands to be executed at a breakpoint. If this function | |
220 | calls back to a GUI, it might take this opportunity to pop up a text | |
221 | interaction window with this message. Next, readline_hook is called | |
222 | with a prompt that is emitted prior to collecting the user input. | |
223 | It can be called multiple times. Finally, readline_end_hook is called | |
224 | to notify the GUI that we are done with the interaction window and it | |
225 | can close it. */ | |
226 | ||
507f3c78 KB |
227 | void (*readline_begin_hook) (char *, ...); |
228 | char *(*readline_hook) (char *); | |
229 | void (*readline_end_hook) (void); | |
c906108c SS |
230 | |
231 | /* Called as appropriate to notify the interface of the specified breakpoint | |
232 | conditions. */ | |
233 | ||
507f3c78 KB |
234 | void (*create_breakpoint_hook) (struct breakpoint * bpt); |
235 | void (*delete_breakpoint_hook) (struct breakpoint * bpt); | |
236 | void (*modify_breakpoint_hook) (struct breakpoint * bpt); | |
c906108c | 237 | |
6426a772 JM |
238 | /* Called as appropriate to notify the interface that we have attached |
239 | to or detached from an already running process. */ | |
240 | ||
507f3c78 KB |
241 | void (*attach_hook) (void); |
242 | void (*detach_hook) (void); | |
6426a772 | 243 | |
c906108c SS |
244 | /* Called during long calculations to allow GUI to repair window damage, and to |
245 | check for stop buttons, etc... */ | |
246 | ||
507f3c78 | 247 | void (*interactive_hook) (void); |
c906108c SS |
248 | |
249 | /* Called when the registers have changed, as a hint to a GUI | |
250 | to minimize window update. */ | |
251 | ||
507f3c78 | 252 | void (*registers_changed_hook) (void); |
c906108c SS |
253 | |
254 | /* Tell the GUI someone changed the register REGNO. -1 means | |
255 | that the caller does not know which register changed or | |
c5aa993b | 256 | that several registers have changed (see value_assign). */ |
507f3c78 | 257 | void (*register_changed_hook) (int regno); |
c906108c SS |
258 | |
259 | /* Tell the GUI someone changed LEN bytes of memory at ADDR */ | |
507f3c78 | 260 | void (*memory_changed_hook) (CORE_ADDR addr, int len); |
c906108c SS |
261 | |
262 | /* Called when going to wait for the target. Usually allows the GUI to run | |
263 | while waiting for target events. */ | |
264 | ||
39f77062 KB |
265 | ptid_t (*target_wait_hook) (ptid_t ptid, |
266 | struct target_waitstatus * status); | |
c906108c SS |
267 | |
268 | /* Used by UI as a wrapper around command execution. May do various things | |
269 | like enabling/disabling buttons, etc... */ | |
270 | ||
507f3c78 KB |
271 | void (*call_command_hook) (struct cmd_list_element * c, char *cmd, |
272 | int from_tty); | |
c906108c | 273 | |
96baa820 JM |
274 | /* Called after a `set' command has finished. Is only run if the |
275 | `set' command succeeded. */ | |
276 | ||
eb2f494a | 277 | void (*set_hook) (struct cmd_list_element * c); |
96baa820 | 278 | |
c906108c SS |
279 | /* Called when the current thread changes. Argument is thread id. */ |
280 | ||
507f3c78 | 281 | void (*context_hook) (int id); |
c906108c SS |
282 | |
283 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
284 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
285 | ||
eb2f494a | 286 | NORETURN void (*error_hook) (void) ATTR_NORETURN; |
c906108c | 287 | \f |
c5aa993b | 288 | |
99eeeb0f ND |
289 | /* One should use catch_errors rather than manipulating these |
290 | directly. */ | |
c4093a6a JM |
291 | #if defined(HAVE_SIGSETJMP) |
292 | #define SIGJMP_BUF sigjmp_buf | |
ae9d9b96 CF |
293 | #define SIGSETJMP(buf) sigsetjmp((buf), 1) |
294 | #define SIGLONGJMP(buf,val) siglongjmp((buf), (val)) | |
c4093a6a JM |
295 | #else |
296 | #define SIGJMP_BUF jmp_buf | |
297 | #define SIGSETJMP(buf) setjmp(buf) | |
ae9d9b96 | 298 | #define SIGLONGJMP(buf,val) longjmp((buf), (val)) |
c4093a6a JM |
299 | #endif |
300 | ||
b5a2688f | 301 | /* Where to go for throw_exception(). */ |
99eeeb0f | 302 | static SIGJMP_BUF *catch_return; |
c906108c | 303 | |
99eeeb0f | 304 | /* Return for reason REASON to the nearest containing catch_errors(). */ |
c906108c | 305 | |
c2d11a7d | 306 | NORETURN void |
b5a2688f | 307 | throw_exception (enum return_reason reason) |
c906108c SS |
308 | { |
309 | quit_flag = 0; | |
310 | immediate_quit = 0; | |
311 | ||
312 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
313 | I can think of a reason why that is vital, though). */ | |
c5aa993b | 314 | bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */ |
c906108c SS |
315 | |
316 | disable_current_display (); | |
317 | do_cleanups (ALL_CLEANUPS); | |
c4093a6a | 318 | if (event_loop_p && target_can_async_p () && !target_executing) |
43ff13b4 | 319 | do_exec_cleanups (ALL_CLEANUPS); |
6426a772 JM |
320 | if (event_loop_p && sync_execution) |
321 | do_exec_error_cleanups (ALL_CLEANUPS); | |
c906108c SS |
322 | |
323 | if (annotation_level > 1) | |
324 | switch (reason) | |
325 | { | |
326 | case RETURN_QUIT: | |
327 | annotate_quit (); | |
328 | break; | |
329 | case RETURN_ERROR: | |
330 | annotate_error (); | |
331 | break; | |
332 | } | |
333 | ||
99eeeb0f ND |
334 | /* Jump to the containing catch_errors() call, communicating REASON |
335 | to that call via setjmp's return value. Note that REASON can't | |
336 | be zero, by definition in defs.h. */ | |
337 | ||
eb2f494a | 338 | (NORETURN void) SIGLONGJMP (*catch_return, (int) reason); |
c906108c SS |
339 | } |
340 | ||
f9c696d2 AC |
341 | /* Call FUNC() with args FUNC_UIOUT and FUNC_ARGS, catching any |
342 | errors. Set FUNC_CAUGHT to an ``enum return_reason'' if the | |
b5a2688f | 343 | function is aborted (using throw_exception() or zero if the |
f9c696d2 AC |
344 | function returns normally. Set FUNC_VAL to the value returned by |
345 | the function or 0 if the function was aborted. | |
c906108c SS |
346 | |
347 | Must not be called with immediate_quit in effect (bad things might | |
348 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
349 | This is an OK restriction; with very few exceptions immediate_quit can | |
350 | be replaced by judicious use of QUIT. | |
351 | ||
352 | MASK specifies what to catch; it is normally set to | |
353 | RETURN_MASK_ALL, if for no other reason than that the code which | |
354 | calls catch_errors might not be set up to deal with a quit which | |
355 | isn't caught. But if the code can deal with it, it generally | |
356 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
357 | useful to abort only the portion of the operation inside the | |
358 | catch_errors. Note that quit should return to the command line | |
359 | fairly quickly, even if some further processing is being done. */ | |
360 | ||
11cf8741 JM |
361 | /* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with |
362 | error() et.al. could maintain a set of flags that indicate the the | |
363 | current state of each of the longjmp buffers. This would give the | |
364 | longjmp code the chance to detect a longjmp botch (before it gets | |
365 | to longjmperror()). Prior to 1999-11-05 this wasn't possible as | |
366 | code also randomly used a SET_TOP_LEVEL macro that directly | |
367 | initialize the longjmp buffers. */ | |
368 | ||
e26cc349 | 369 | /* MAYBE: cagney/1999-11-05: Should the catch_errors and cleanups code |
11cf8741 JM |
370 | be consolidated into a single file instead of being distributed |
371 | between utils.c and top.c? */ | |
372 | ||
f9c696d2 AC |
373 | static void |
374 | catcher (catch_exceptions_ftype *func, | |
375 | struct ui_out *func_uiout, | |
376 | void *func_args, | |
377 | int *func_val, | |
378 | enum return_reason *func_caught, | |
379 | char *errstring, | |
380 | return_mask mask) | |
c906108c | 381 | { |
99eeeb0f ND |
382 | SIGJMP_BUF *saved_catch; |
383 | SIGJMP_BUF catch; | |
c906108c SS |
384 | struct cleanup *saved_cleanup_chain; |
385 | char *saved_error_pre_print; | |
386 | char *saved_quit_pre_print; | |
f9c696d2 | 387 | struct ui_out *saved_uiout; |
c906108c | 388 | |
99eeeb0f ND |
389 | /* Return value from SIGSETJMP(): enum return_reason if error or |
390 | quit caught, 0 otherwise. */ | |
391 | int caught; | |
392 | ||
f9c696d2 AC |
393 | /* Return value from FUNC(): Hopefully non-zero. Explicitly set to |
394 | zero if an error quit was caught. */ | |
395 | int val; | |
396 | ||
99eeeb0f ND |
397 | /* Override error/quit messages during FUNC. */ |
398 | ||
c906108c SS |
399 | saved_error_pre_print = error_pre_print; |
400 | saved_quit_pre_print = quit_pre_print; | |
401 | ||
402 | if (mask & RETURN_MASK_ERROR) | |
99eeeb0f | 403 | error_pre_print = errstring; |
c906108c | 404 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
405 | quit_pre_print = errstring; |
406 | ||
f9c696d2 AC |
407 | /* Override the global ``struct ui_out'' builder. */ |
408 | ||
409 | saved_uiout = uiout; | |
410 | uiout = func_uiout; | |
411 | ||
99eeeb0f ND |
412 | /* Prevent error/quit during FUNC from calling cleanups established |
413 | prior to here. */ | |
414 | ||
415 | saved_cleanup_chain = save_cleanups (); | |
416 | ||
417 | /* Call FUNC, catching error/quit events. */ | |
418 | ||
419 | saved_catch = catch_return; | |
420 | catch_return = &catch; | |
421 | caught = SIGSETJMP (catch); | |
422 | if (!caught) | |
f9c696d2 | 423 | val = (*func) (func_uiout, func_args); |
7f7e9482 AC |
424 | else |
425 | val = 0; | |
99eeeb0f ND |
426 | catch_return = saved_catch; |
427 | ||
e26cc349 | 428 | /* FIXME: cagney/1999-11-05: A correct FUNC implementation will |
99eeeb0f | 429 | clean things up (restoring the cleanup chain) to the state they |
e26cc349 | 430 | were just prior to the call. Unfortunately, many FUNC's are not |
99eeeb0f ND |
431 | that well behaved. This could be fixed by adding either a |
432 | do_cleanups call (to cover the problem) or an assertion check to | |
433 | detect bad FUNCs code. */ | |
434 | ||
f9c696d2 AC |
435 | /* Restore the cleanup chain, the error/quit messages, and the uiout |
436 | builder, to their original states. */ | |
c906108c SS |
437 | |
438 | restore_cleanups (saved_cleanup_chain); | |
439 | ||
f9c696d2 AC |
440 | uiout = saved_uiout; |
441 | ||
c906108c | 442 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
443 | quit_pre_print = saved_quit_pre_print; |
444 | if (mask & RETURN_MASK_ERROR) | |
445 | error_pre_print = saved_error_pre_print; | |
446 | ||
f9c696d2 AC |
447 | /* Return normally if no error/quit event occurred or this catcher |
448 | can handle this exception. The caller analyses the func return | |
449 | values. */ | |
99eeeb0f | 450 | |
f9c696d2 AC |
451 | if (!caught || (mask & RETURN_MASK (caught))) |
452 | { | |
453 | *func_val = val; | |
454 | *func_caught = caught; | |
455 | return; | |
456 | } | |
99eeeb0f | 457 | |
f9c696d2 | 458 | /* The caller didn't request that the event be caught, relay the |
99eeeb0f ND |
459 | event to the next containing catch_errors(). */ |
460 | ||
b5a2688f | 461 | throw_exception (caught); |
f9c696d2 | 462 | } |
99eeeb0f | 463 | |
f9c696d2 AC |
464 | int |
465 | catch_exceptions (struct ui_out *uiout, | |
466 | catch_exceptions_ftype *func, | |
467 | void *func_args, | |
468 | char *errstring, | |
469 | return_mask mask) | |
470 | { | |
471 | int val; | |
472 | enum return_reason caught; | |
473 | catcher (func, uiout, func_args, &val, &caught, errstring, mask); | |
474 | gdb_assert (val >= 0); | |
475 | gdb_assert (caught <= 0); | |
476 | if (caught < 0) | |
477 | return caught; | |
478 | return val; | |
479 | } | |
99eeeb0f | 480 | |
f9c696d2 AC |
481 | struct catch_errors_args |
482 | { | |
483 | catch_errors_ftype *func; | |
484 | void *func_args; | |
485 | }; | |
99eeeb0f | 486 | |
f9c696d2 AC |
487 | int |
488 | do_catch_errors (struct ui_out *uiout, void *data) | |
489 | { | |
490 | struct catch_errors_args *args = data; | |
491 | return args->func (args->func_args); | |
492 | } | |
99eeeb0f | 493 | |
f9c696d2 AC |
494 | int |
495 | catch_errors (catch_errors_ftype *func, void *func_args, char *errstring, | |
496 | return_mask mask) | |
497 | { | |
498 | int val; | |
499 | enum return_reason caught; | |
500 | struct catch_errors_args args; | |
501 | args.func = func; | |
502 | args.func_args = func_args; | |
503 | catcher (do_catch_errors, uiout, &args, &val, &caught, errstring, mask); | |
504 | if (caught != 0) | |
505 | return 0; | |
506 | return val; | |
c906108c SS |
507 | } |
508 | ||
11cf8741 JM |
509 | struct captured_command_args |
510 | { | |
511 | catch_command_errors_ftype *command; | |
512 | char *arg; | |
513 | int from_tty; | |
514 | }; | |
515 | ||
516 | static int | |
517 | do_captured_command (void *data) | |
518 | { | |
519 | struct captured_command_args *context = data; | |
520 | context->command (context->arg, context->from_tty); | |
521 | /* FIXME: cagney/1999-11-07: Technically this do_cleanups() call | |
522 | isn't needed. Instead an assertion check could be made that | |
523 | simply confirmed that the called function correctly cleaned up | |
e26cc349 | 524 | after itself. Unfortunately, old code (prior to 1999-11-04) in |
11cf8741 JM |
525 | main.c was calling SET_TOP_LEVEL(), calling the command function, |
526 | and then *always* calling do_cleanups(). For the moment we | |
527 | remain ``bug compatible'' with that old code.. */ | |
528 | do_cleanups (ALL_CLEANUPS); | |
529 | return 1; | |
530 | } | |
531 | ||
532 | int | |
eb2f494a | 533 | catch_command_errors (catch_command_errors_ftype * command, |
11cf8741 JM |
534 | char *arg, int from_tty, return_mask mask) |
535 | { | |
536 | struct captured_command_args args; | |
537 | args.command = command; | |
538 | args.arg = arg; | |
539 | args.from_tty = from_tty; | |
540 | return catch_errors (do_captured_command, &args, "", mask); | |
541 | } | |
542 | ||
543 | ||
c906108c SS |
544 | /* Handler for SIGHUP. */ |
545 | ||
546 | #ifdef SIGHUP | |
c906108c SS |
547 | /* Just a little helper function for disconnect(). */ |
548 | ||
392a587b | 549 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
550 | gdb to use the event loop as the default command loop and we merge |
551 | event-top.c into this file, top.c */ | |
552 | /* static */ int | |
d0c8cdfb | 553 | quit_cover (void *s) |
c906108c | 554 | { |
c5aa993b JM |
555 | caution = 0; /* Throw caution to the wind -- we're exiting. |
556 | This prevents asking the user dumb questions. */ | |
557 | quit_command ((char *) 0, 0); | |
c906108c SS |
558 | return 0; |
559 | } | |
64cdedad EZ |
560 | |
561 | static void | |
562 | disconnect (int signo) | |
563 | { | |
564 | catch_errors (quit_cover, NULL, | |
565 | "Could not kill the program being debugged", RETURN_MASK_ALL); | |
566 | signal (SIGHUP, SIG_DFL); | |
567 | kill (getpid (), SIGHUP); | |
568 | } | |
c906108c SS |
569 | #endif /* defined SIGHUP */ |
570 | \f | |
571 | /* Line number we are currently in in a file which is being sourced. */ | |
392a587b | 572 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
573 | gdb to use the event loop as the default command loop and we merge |
574 | event-top.c into this file, top.c */ | |
575 | /* static */ int source_line_number; | |
c906108c SS |
576 | |
577 | /* Name of the file we are sourcing. */ | |
392a587b | 578 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
579 | gdb to use the event loop as the default command loop and we merge |
580 | event-top.c into this file, top.c */ | |
581 | /* static */ char *source_file_name; | |
c906108c SS |
582 | |
583 | /* Buffer containing the error_pre_print used by the source stuff. | |
584 | Malloc'd. */ | |
392a587b | 585 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
586 | gdb to use the event loop as the default command loop and we merge |
587 | event-top.c into this file, top.c */ | |
588 | /* static */ char *source_error; | |
c906108c SS |
589 | static int source_error_allocated; |
590 | ||
591 | /* Something to glom on to the start of error_pre_print if source_file_name | |
592 | is set. */ | |
392a587b | 593 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
594 | gdb to use the event loop as the default command loop and we merge |
595 | event-top.c into this file, top.c */ | |
596 | /* static */ char *source_pre_error; | |
c906108c SS |
597 | |
598 | /* Clean up on error during a "source" command (or execution of a | |
599 | user-defined command). */ | |
600 | ||
d318976c | 601 | void |
e41a3b1a | 602 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
603 | { |
604 | /* Restore the previous input stream. */ | |
605 | instream = stream; | |
606 | } | |
607 | ||
608 | /* Read commands from STREAM. */ | |
609 | void | |
fba45db2 | 610 | read_command_file (FILE *stream) |
c906108c SS |
611 | { |
612 | struct cleanup *cleanups; | |
613 | ||
e41a3b1a | 614 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 615 | instream = stream; |
c5aa993b | 616 | command_loop (); |
c906108c SS |
617 | do_cleanups (cleanups); |
618 | } | |
619 | \f | |
507f3c78 | 620 | void (*pre_init_ui_hook) (void); |
c906108c | 621 | |
e41a3b1a AC |
622 | #ifdef __MSDOS__ |
623 | void | |
624 | do_chdir_cleanup (void *old_dir) | |
625 | { | |
626 | chdir (old_dir); | |
b8c9b27d | 627 | xfree (old_dir); |
e41a3b1a AC |
628 | } |
629 | #endif | |
630 | ||
d318976c FN |
631 | /* Execute the line P as a command. |
632 | Pass FROM_TTY as second argument to the defining function. */ | |
c906108c | 633 | |
d318976c FN |
634 | void |
635 | execute_command (char *p, int from_tty) | |
c906108c | 636 | { |
d318976c FN |
637 | register struct cmd_list_element *c; |
638 | register enum language flang; | |
639 | static int warned = 0; | |
640 | char *line; | |
67e1e03a | 641 | |
d318976c | 642 | free_all_values (); |
c906108c | 643 | |
d318976c FN |
644 | /* Force cleanup of any alloca areas if using C alloca instead of |
645 | a builtin alloca. */ | |
646 | alloca (0); | |
c906108c | 647 | |
d318976c FN |
648 | /* This can happen when command_line_input hits end of file. */ |
649 | if (p == NULL) | |
650 | return; | |
c906108c | 651 | |
d318976c | 652 | serial_log_command (p); |
8b93c638 | 653 | |
d318976c FN |
654 | while (*p == ' ' || *p == '\t') |
655 | p++; | |
656 | if (*p) | |
8b93c638 | 657 | { |
d318976c FN |
658 | char *arg; |
659 | line = p; | |
8b93c638 | 660 | |
d318976c | 661 | c = lookup_cmd (&p, cmdlist, "", 0, 1); |
8b93c638 | 662 | |
d318976c FN |
663 | /* If the target is running, we allow only a limited set of |
664 | commands. */ | |
665 | if (event_loop_p && target_can_async_p () && target_executing) | |
666 | if (!strcmp (c->name, "help") | |
667 | && !strcmp (c->name, "pwd") | |
668 | && !strcmp (c->name, "show") | |
669 | && !strcmp (c->name, "stop")) | |
670 | error ("Cannot execute this command while the target is running."); | |
8b93c638 | 671 | |
d318976c FN |
672 | /* Pass null arg rather than an empty one. */ |
673 | arg = *p ? p : 0; | |
8b93c638 | 674 | |
9f60d481 AC |
675 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy |
676 | while the is_complete_command(cfunc) test is just plain | |
677 | bogus. They should both be replaced by a test of the form | |
678 | c->strip_trailing_white_space_p. */ | |
679 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
680 | can't be replaced with func. This is because it is the | |
681 | cfunc, and not the func, that has the value that the | |
682 | is_complete_command hack is testing for. */ | |
683 | /* Clear off trailing whitespace, except for set and complete | |
684 | command. */ | |
d318976c FN |
685 | if (arg |
686 | && c->type != set_cmd | |
bbaca940 | 687 | && !is_complete_command (c)) |
8b93c638 | 688 | { |
d318976c FN |
689 | p = arg + strlen (arg) - 1; |
690 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
691 | p--; | |
692 | *(p + 1) = '\0'; | |
8b93c638 JM |
693 | } |
694 | ||
d318976c | 695 | /* If this command has been pre-hooked, run the hook first. */ |
5913bcb0 | 696 | execute_cmd_pre_hook (c); |
c906108c | 697 | |
d318976c FN |
698 | if (c->flags & DEPRECATED_WARN_USER) |
699 | deprecated_cmd_warning (&line); | |
c906108c | 700 | |
d318976c FN |
701 | if (c->class == class_user) |
702 | execute_user_command (c, arg); | |
703 | else if (c->type == set_cmd || c->type == show_cmd) | |
704 | do_setshow_command (arg, from_tty & caution, c); | |
9f60d481 | 705 | else if (c->func == NULL) |
d318976c FN |
706 | error ("That is not a command, just a help topic."); |
707 | else if (call_command_hook) | |
708 | call_command_hook (c, arg, from_tty & caution); | |
709 | else | |
9f60d481 | 710 | (*c->func) (c, arg, from_tty & caution); |
d318976c FN |
711 | |
712 | /* If this command has been post-hooked, run the hook last. */ | |
5913bcb0 | 713 | execute_cmd_post_hook (c); |
c906108c | 714 | |
c906108c SS |
715 | } |
716 | ||
d318976c FN |
717 | /* Tell the user if the language has changed (except first time). */ |
718 | if (current_language != expected_language) | |
c906108c | 719 | { |
d318976c | 720 | if (language_mode == language_mode_auto) |
c906108c | 721 | { |
d318976c | 722 | language_info (1); /* Print what changed. */ |
c906108c | 723 | } |
d318976c | 724 | warned = 0; |
c906108c SS |
725 | } |
726 | ||
d318976c FN |
727 | /* Warn the user if the working language does not match the |
728 | language of the current frame. Only warn the user if we are | |
729 | actually running the program, i.e. there is a stack. */ | |
730 | /* FIXME: This should be cacheing the frame and only running when | |
731 | the frame changes. */ | |
732 | ||
733 | if (target_has_stack) | |
c906108c | 734 | { |
d318976c FN |
735 | flang = get_frame_language (); |
736 | if (!warned | |
737 | && flang != language_unknown | |
738 | && flang != current_language->la_language) | |
c906108c | 739 | { |
d318976c FN |
740 | printf_filtered ("%s\n", lang_frame_mismatch_warn); |
741 | warned = 1; | |
c906108c | 742 | } |
c906108c SS |
743 | } |
744 | } | |
745 | ||
d318976c FN |
746 | /* Read commands from `instream' and execute them |
747 | until end of file or error reading instream. */ | |
c906108c | 748 | |
d318976c FN |
749 | void |
750 | command_loop (void) | |
c906108c | 751 | { |
d318976c FN |
752 | struct cleanup *old_chain; |
753 | char *command; | |
754 | int stdin_is_tty = ISATTY (stdin); | |
755 | long time_at_cmd_start; | |
756 | #ifdef HAVE_SBRK | |
757 | long space_at_cmd_start = 0; | |
758 | #endif | |
759 | extern int display_time; | |
760 | extern int display_space; | |
c5aa993b | 761 | |
d318976c FN |
762 | while (instream && !feof (instream)) |
763 | { | |
d318976c FN |
764 | if (window_hook && instream == stdin) |
765 | (*window_hook) (instream, get_prompt ()); | |
c906108c | 766 | |
d318976c FN |
767 | quit_flag = 0; |
768 | if (instream == stdin && stdin_is_tty) | |
769 | reinitialize_more_filter (); | |
770 | old_chain = make_cleanup (null_cleanup, 0); | |
c906108c | 771 | |
d318976c FN |
772 | /* Get a command-line. This calls the readline package. */ |
773 | command = command_line_input (instream == stdin ? | |
774 | get_prompt () : (char *) NULL, | |
775 | instream == stdin, "prompt"); | |
d318976c FN |
776 | if (command == 0) |
777 | return; | |
c906108c | 778 | |
d318976c | 779 | time_at_cmd_start = get_run_time (); |
c906108c | 780 | |
d318976c | 781 | if (display_space) |
9e0b60a8 | 782 | { |
d318976c FN |
783 | #ifdef HAVE_SBRK |
784 | extern char **environ; | |
785 | char *lim = (char *) sbrk (0); | |
9e0b60a8 | 786 | |
d318976c | 787 | space_at_cmd_start = (long) (lim - (char *) &environ); |
9e0b60a8 | 788 | #endif |
d318976c | 789 | } |
9e0b60a8 | 790 | |
d318976c FN |
791 | execute_command (command, instream == stdin); |
792 | /* Do any commands attached to breakpoint we stopped at. */ | |
793 | bpstat_do_actions (&stop_bpstat); | |
794 | do_cleanups (old_chain); | |
9e0b60a8 | 795 | |
d318976c | 796 | if (display_time) |
9e0b60a8 | 797 | { |
d318976c | 798 | long cmd_time = get_run_time () - time_at_cmd_start; |
9e0b60a8 | 799 | |
d318976c FN |
800 | printf_unfiltered ("Command execution time: %ld.%06ld\n", |
801 | cmd_time / 1000000, cmd_time % 1000000); | |
9e0b60a8 | 802 | } |
9e0b60a8 | 803 | |
d318976c | 804 | if (display_space) |
9e0b60a8 | 805 | { |
d318976c FN |
806 | #ifdef HAVE_SBRK |
807 | extern char **environ; | |
808 | char *lim = (char *) sbrk (0); | |
809 | long space_now = lim - (char *) &environ; | |
810 | long space_diff = space_now - space_at_cmd_start; | |
811 | ||
812 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", | |
813 | space_now, | |
814 | (space_diff >= 0 ? '+' : '-'), | |
815 | space_diff); | |
816 | #endif | |
9e0b60a8 | 817 | } |
9e0b60a8 | 818 | } |
9e0b60a8 | 819 | } |
9e0b60a8 | 820 | |
d318976c FN |
821 | /* Read commands from `instream' and execute them until end of file or |
822 | error reading instream. This command loop doesnt care about any | |
823 | such things as displaying time and space usage. If the user asks | |
824 | for those, they won't work. */ | |
825 | void | |
826 | simplified_command_loop (char *(*read_input_func) (char *), | |
827 | void (*execute_command_func) (char *, int)) | |
9e0b60a8 | 828 | { |
d318976c FN |
829 | struct cleanup *old_chain; |
830 | char *command; | |
831 | int stdin_is_tty = ISATTY (stdin); | |
9e0b60a8 | 832 | |
d318976c | 833 | while (instream && !feof (instream)) |
9e0b60a8 | 834 | { |
d318976c FN |
835 | quit_flag = 0; |
836 | if (instream == stdin && stdin_is_tty) | |
837 | reinitialize_more_filter (); | |
838 | old_chain = make_cleanup (null_cleanup, 0); | |
839 | ||
840 | /* Get a command-line. */ | |
841 | command = (*read_input_func) (instream == stdin ? | |
842 | get_prompt () : (char *) NULL); | |
9e0b60a8 | 843 | |
d318976c FN |
844 | if (command == 0) |
845 | return; | |
9e0b60a8 | 846 | |
d318976c | 847 | (*execute_command_func) (command, instream == stdin); |
9e0b60a8 | 848 | |
d318976c FN |
849 | /* Do any commands attached to breakpoint we stopped at. */ |
850 | bpstat_do_actions (&stop_bpstat); | |
9e0b60a8 | 851 | |
d318976c | 852 | do_cleanups (old_chain); |
c5aa993b | 853 | } |
9e0b60a8 | 854 | } |
d318976c FN |
855 | \f |
856 | /* Commands call this if they do not want to be repeated by null lines. */ | |
9e0b60a8 | 857 | |
d318976c FN |
858 | void |
859 | dont_repeat (void) | |
9e0b60a8 | 860 | { |
d318976c FN |
861 | if (server_command) |
862 | return; | |
9e0b60a8 | 863 | |
d318976c FN |
864 | /* If we aren't reading from standard input, we are saving the last |
865 | thing read from stdin in line and don't want to delete it. Null lines | |
866 | won't repeat here in any case. */ | |
867 | if (instream == stdin) | |
868 | *line = 0; | |
9e0b60a8 | 869 | } |
d318976c FN |
870 | \f |
871 | /* Read a line from the stream "instream" without command line editing. | |
9e0b60a8 | 872 | |
d318976c FN |
873 | It prints PROMPT_ARG once at the start. |
874 | Action is compatible with "readline", e.g. space for the result is | |
875 | malloc'd and should be freed by the caller. | |
9e0b60a8 | 876 | |
d318976c FN |
877 | A NULL return means end of file. */ |
878 | char * | |
879 | gdb_readline (char *prompt_arg) | |
9e0b60a8 | 880 | { |
d318976c FN |
881 | int c; |
882 | char *result; | |
883 | int input_index = 0; | |
884 | int result_size = 80; | |
9e0b60a8 | 885 | |
d318976c | 886 | if (prompt_arg) |
9e0b60a8 | 887 | { |
d318976c FN |
888 | /* Don't use a _filtered function here. It causes the assumed |
889 | character position to be off, since the newline we read from | |
890 | the user is not accounted for. */ | |
891 | fputs_unfiltered (prompt_arg, gdb_stdout); | |
9e0b60a8 JM |
892 | gdb_flush (gdb_stdout); |
893 | } | |
894 | ||
d318976c | 895 | result = (char *) xmalloc (result_size); |
9e0b60a8 JM |
896 | |
897 | while (1) | |
898 | { | |
d318976c FN |
899 | /* Read from stdin if we are executing a user defined command. |
900 | This is the right thing for prompt_for_continue, at least. */ | |
901 | c = fgetc (instream ? instream : stdin); | |
9e0b60a8 | 902 | |
d318976c | 903 | if (c == EOF) |
9e0b60a8 | 904 | { |
d318976c FN |
905 | if (input_index > 0) |
906 | /* The last line does not end with a newline. Return it, and | |
907 | if we are called again fgetc will still return EOF and | |
908 | we'll return NULL then. */ | |
9e0b60a8 | 909 | break; |
b8c9b27d | 910 | xfree (result); |
d318976c | 911 | return NULL; |
9e0b60a8 | 912 | } |
c5aa993b | 913 | |
d318976c FN |
914 | if (c == '\n') |
915 | #ifndef CRLF_SOURCE_FILES | |
916 | break; | |
917 | #else | |
9e0b60a8 | 918 | { |
d318976c FN |
919 | if (input_index > 0 && result[input_index - 1] == '\r') |
920 | input_index--; | |
921 | break; | |
9e0b60a8 | 922 | } |
d318976c | 923 | #endif |
9e0b60a8 | 924 | |
d318976c FN |
925 | result[input_index++] = c; |
926 | while (input_index >= result_size) | |
9e0b60a8 | 927 | { |
d318976c FN |
928 | result_size *= 2; |
929 | result = (char *) xrealloc (result, result_size); | |
9e0b60a8 | 930 | } |
9e0b60a8 JM |
931 | } |
932 | ||
d318976c FN |
933 | result[input_index++] = '\0'; |
934 | return result; | |
9e0b60a8 JM |
935 | } |
936 | ||
d318976c FN |
937 | /* Variables which control command line editing and history |
938 | substitution. These variables are given default values at the end | |
939 | of this file. */ | |
940 | static int command_editing_p; | |
941 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
942 | gdb to use the event loop as the default command loop and we merge | |
943 | event-top.c into this file, top.c */ | |
944 | /* static */ int history_expansion_p; | |
945 | static int write_history_p; | |
946 | static int history_size; | |
947 | static char *history_filename; | |
9e0b60a8 | 948 | |
9e0b60a8 | 949 | \f |
d318976c FN |
950 | #ifdef STOP_SIGNAL |
951 | static void | |
952 | stop_sig (int signo) | |
9e0b60a8 | 953 | { |
d318976c FN |
954 | #if STOP_SIGNAL == SIGTSTP |
955 | signal (SIGTSTP, SIG_DFL); | |
46711df8 MK |
956 | #if HAVE_SIGPROCMASK |
957 | { | |
958 | sigset_t zero; | |
959 | ||
960 | sigemptyset (&zero); | |
961 | sigprocmask (SIG_SETMASK, &zero, 0); | |
962 | } | |
963 | #elif HAVE_SIGSETMASK | |
d318976c | 964 | sigsetmask (0); |
46711df8 | 965 | #endif |
d318976c FN |
966 | kill (getpid (), SIGTSTP); |
967 | signal (SIGTSTP, stop_sig); | |
968 | #else | |
969 | signal (STOP_SIGNAL, stop_sig); | |
970 | #endif | |
971 | printf_unfiltered ("%s", get_prompt ()); | |
972 | gdb_flush (gdb_stdout); | |
9e0b60a8 | 973 | |
d318976c FN |
974 | /* Forget about any previous command -- null line now will do nothing. */ |
975 | dont_repeat (); | |
9e0b60a8 | 976 | } |
d318976c | 977 | #endif /* STOP_SIGNAL */ |
9e0b60a8 | 978 | |
d318976c | 979 | /* Initialize signal handlers. */ |
64cdedad EZ |
980 | static void |
981 | float_handler (int signo) | |
982 | { | |
983 | /* This message is based on ANSI C, section 4.7. Note that integer | |
984 | divide by zero causes this, so "float" is a misnomer. */ | |
985 | signal (SIGFPE, float_handler); | |
986 | error ("Erroneous arithmetic operation."); | |
987 | } | |
988 | ||
9e0b60a8 | 989 | static void |
d318976c | 990 | do_nothing (int signo) |
9e0b60a8 | 991 | { |
d318976c FN |
992 | /* Under System V the default disposition of a signal is reinstated after |
993 | the signal is caught and delivered to an application process. On such | |
994 | systems one must restore the replacement signal handler if one wishes | |
995 | to continue handling the signal in one's program. On BSD systems this | |
996 | is not needed but it is harmless, and it simplifies the code to just do | |
997 | it unconditionally. */ | |
998 | signal (signo, do_nothing); | |
9e0b60a8 JM |
999 | } |
1000 | ||
9e0b60a8 | 1001 | static void |
d318976c | 1002 | init_signals (void) |
9e0b60a8 | 1003 | { |
d318976c | 1004 | signal (SIGINT, request_quit); |
9e0b60a8 | 1005 | |
d318976c FN |
1006 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed |
1007 | to the inferior and breakpoints will be ignored. */ | |
1008 | #ifdef SIGTRAP | |
1009 | signal (SIGTRAP, SIG_DFL); | |
1010 | #endif | |
9e0b60a8 | 1011 | |
d318976c FN |
1012 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get |
1013 | passed to the inferior, which we don't want. It would be | |
1014 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
1015 | on BSD4.3 systems using vfork, that can affect the | |
1016 | GDB process as well as the inferior (the signal handling tables | |
1017 | might be in memory, shared between the two). Since we establish | |
1018 | a handler for SIGQUIT, when we call exec it will set the signal | |
1019 | to SIG_DFL for us. */ | |
1020 | signal (SIGQUIT, do_nothing); | |
1021 | #ifdef SIGHUP | |
1022 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
1023 | signal (SIGHUP, disconnect); | |
1024 | #endif | |
1025 | signal (SIGFPE, float_handler); | |
9e0b60a8 | 1026 | |
d318976c FN |
1027 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) |
1028 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1029 | #endif | |
9e0b60a8 JM |
1030 | } |
1031 | \f | |
467d8519 TT |
1032 | /* The current saved history number from operate-and-get-next. |
1033 | This is -1 if not valid. */ | |
1034 | static int operate_saved_history = -1; | |
1035 | ||
1036 | /* This is put on the appropriate hook and helps operate-and-get-next | |
1037 | do its work. */ | |
1038 | void | |
1039 | gdb_rl_operate_and_get_next_completion () | |
1040 | { | |
1041 | int delta = where_history () - operate_saved_history; | |
1042 | /* The `key' argument to rl_get_previous_history is ignored. */ | |
1043 | rl_get_previous_history (delta, 0); | |
1044 | operate_saved_history = -1; | |
1045 | ||
1046 | /* readline doesn't automatically update the display for us. */ | |
1047 | rl_redisplay (); | |
1048 | ||
1049 | after_char_processing_hook = NULL; | |
1050 | rl_pre_input_hook = NULL; | |
1051 | } | |
1052 | ||
1053 | /* This is a gdb-local readline command handler. It accepts the | |
1054 | current command line (like RET does) and, if this command was taken | |
1055 | from the history, arranges for the next command in the history to | |
1056 | appear on the command line when the prompt returns. | |
1057 | We ignore the arguments. */ | |
1058 | static int | |
1059 | gdb_rl_operate_and_get_next (int count, int key) | |
1060 | { | |
1061 | if (event_loop_p) | |
1062 | { | |
1063 | /* Use the async hook. */ | |
1064 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
1065 | } | |
1066 | else | |
1067 | { | |
1068 | /* This hook only works correctly when we are using the | |
1069 | synchronous readline. */ | |
1070 | rl_pre_input_hook = (Function *) gdb_rl_operate_and_get_next_completion; | |
1071 | } | |
1072 | ||
1073 | /* Add 1 because we eventually want the next line. */ | |
1074 | operate_saved_history = where_history () + 1; | |
1075 | return rl_newline (1, key); | |
1076 | } | |
1077 | \f | |
d318976c FN |
1078 | /* Read one line from the command input stream `instream' |
1079 | into the local static buffer `linebuffer' (whose current length | |
1080 | is `linelength'). | |
1081 | The buffer is made bigger as necessary. | |
1082 | Returns the address of the start of the line. | |
9e0b60a8 | 1083 | |
d318976c | 1084 | NULL is returned for end of file. |
9e0b60a8 | 1085 | |
d318976c FN |
1086 | *If* the instream == stdin & stdin is a terminal, the line read |
1087 | is copied into the file line saver (global var char *line, | |
1088 | length linesize) so that it can be duplicated. | |
9e0b60a8 | 1089 | |
d318976c FN |
1090 | This routine either uses fancy command line editing or |
1091 | simple input as the user has requested. */ | |
10689f25 | 1092 | |
d318976c FN |
1093 | char * |
1094 | command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) | |
9e0b60a8 | 1095 | { |
d318976c FN |
1096 | static char *linebuffer = 0; |
1097 | static unsigned linelength = 0; | |
9e0b60a8 | 1098 | register char *p; |
d318976c FN |
1099 | char *p1; |
1100 | char *rl; | |
1101 | char *local_prompt = prompt_arg; | |
1102 | char *nline; | |
1103 | char got_eof = 0; | |
1104 | ||
1105 | /* The annotation suffix must be non-NULL. */ | |
1106 | if (annotation_suffix == NULL) | |
1107 | annotation_suffix = ""; | |
9e0b60a8 | 1108 | |
d318976c FN |
1109 | if (annotation_level > 1 && instream == stdin) |
1110 | { | |
1111 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
1112 | + strlen (annotation_suffix) + 40); | |
1113 | if (prompt_arg == NULL) | |
1114 | local_prompt[0] = '\0'; | |
1115 | else | |
1116 | strcpy (local_prompt, prompt_arg); | |
1117 | strcat (local_prompt, "\n\032\032"); | |
1118 | strcat (local_prompt, annotation_suffix); | |
1119 | strcat (local_prompt, "\n"); | |
1120 | } | |
9e0b60a8 | 1121 | |
d318976c | 1122 | if (linebuffer == 0) |
9e0b60a8 | 1123 | { |
d318976c FN |
1124 | linelength = 80; |
1125 | linebuffer = (char *) xmalloc (linelength); | |
9e0b60a8 | 1126 | } |
9e0b60a8 | 1127 | |
d318976c | 1128 | p = linebuffer; |
9e0b60a8 | 1129 | |
d318976c FN |
1130 | /* Control-C quits instantly if typed while in this loop |
1131 | since it should not wait until the user types a newline. */ | |
1132 | immediate_quit++; | |
1133 | #ifdef STOP_SIGNAL | |
1134 | if (job_control) | |
73bc900d | 1135 | { |
d318976c FN |
1136 | if (event_loop_p) |
1137 | signal (STOP_SIGNAL, handle_stop_sig); | |
1138 | else | |
1139 | signal (STOP_SIGNAL, stop_sig); | |
1140 | } | |
1141 | #endif | |
1142 | ||
1143 | while (1) | |
9e0b60a8 | 1144 | { |
d318976c FN |
1145 | /* Make sure that all output has been output. Some machines may let |
1146 | you get away with leaving out some of the gdb_flush, but not all. */ | |
1147 | wrap_here (""); | |
1148 | gdb_flush (gdb_stdout); | |
1149 | gdb_flush (gdb_stderr); | |
1150 | ||
1151 | if (source_file_name != NULL) | |
1152 | { | |
1153 | ++source_line_number; | |
1154 | sprintf (source_error, | |
1155 | "%s%s:%d: Error in sourced command file:\n", | |
1156 | source_pre_error, | |
1157 | source_file_name, | |
1158 | source_line_number); | |
1159 | error_pre_print = source_error; | |
1160 | } | |
1161 | ||
1162 | if (annotation_level > 1 && instream == stdin) | |
1163 | { | |
1164 | printf_unfiltered ("\n\032\032pre-"); | |
1165 | printf_unfiltered (annotation_suffix); | |
1166 | printf_unfiltered ("\n"); | |
1167 | } | |
1168 | ||
1169 | /* Don't use fancy stuff if not talking to stdin. */ | |
1170 | if (readline_hook && instream == NULL) | |
1171 | { | |
1172 | rl = (*readline_hook) (local_prompt); | |
1173 | } | |
1174 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
1175 | { | |
1176 | rl = readline (local_prompt); | |
1177 | } | |
9e0b60a8 | 1178 | else |
d318976c FN |
1179 | { |
1180 | rl = gdb_readline (local_prompt); | |
1181 | } | |
9e0b60a8 | 1182 | |
d318976c FN |
1183 | if (annotation_level > 1 && instream == stdin) |
1184 | { | |
1185 | printf_unfiltered ("\n\032\032post-"); | |
1186 | printf_unfiltered (annotation_suffix); | |
1187 | printf_unfiltered ("\n"); | |
1188 | } | |
9e0b60a8 | 1189 | |
d318976c | 1190 | if (!rl || rl == (char *) EOF) |
9e0b60a8 | 1191 | { |
d318976c FN |
1192 | got_eof = 1; |
1193 | break; | |
9e0b60a8 | 1194 | } |
d318976c FN |
1195 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
1196 | { | |
1197 | linelength = strlen (rl) + 1 + (p - linebuffer); | |
1198 | nline = (char *) xrealloc (linebuffer, linelength); | |
1199 | p += nline - linebuffer; | |
1200 | linebuffer = nline; | |
1201 | } | |
1202 | p1 = rl; | |
1203 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1204 | if this was just a newline) */ | |
1205 | while (*p1) | |
1206 | *p++ = *p1++; | |
9e0b60a8 | 1207 | |
b8c9b27d | 1208 | xfree (rl); /* Allocated in readline. */ |
9e0b60a8 | 1209 | |
d318976c FN |
1210 | if (p == linebuffer || *(p - 1) != '\\') |
1211 | break; | |
9e0b60a8 | 1212 | |
d318976c FN |
1213 | p--; /* Put on top of '\'. */ |
1214 | local_prompt = (char *) 0; | |
1215 | } | |
9e0b60a8 | 1216 | |
d318976c FN |
1217 | #ifdef STOP_SIGNAL |
1218 | if (job_control) | |
1219 | signal (STOP_SIGNAL, SIG_DFL); | |
1220 | #endif | |
1221 | immediate_quit--; | |
9e0b60a8 | 1222 | |
d318976c FN |
1223 | if (got_eof) |
1224 | return NULL; | |
9e0b60a8 | 1225 | |
d318976c FN |
1226 | #define SERVER_COMMAND_LENGTH 7 |
1227 | server_command = | |
1228 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
1229 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); | |
1230 | if (server_command) | |
9e0b60a8 | 1231 | { |
d318976c FN |
1232 | /* Note that we don't set `line'. Between this and the check in |
1233 | dont_repeat, this insures that repeating will still do the | |
1234 | right thing. */ | |
1235 | *p = '\0'; | |
1236 | return linebuffer + SERVER_COMMAND_LENGTH; | |
9e0b60a8 | 1237 | } |
9e0b60a8 | 1238 | |
d318976c FN |
1239 | /* Do history expansion if that is wished. */ |
1240 | if (history_expansion_p && instream == stdin | |
1241 | && ISATTY (instream)) | |
1242 | { | |
1243 | char *history_value; | |
1244 | int expanded; | |
9e0b60a8 | 1245 | |
d318976c FN |
1246 | *p = '\0'; /* Insert null now. */ |
1247 | expanded = history_expand (linebuffer, &history_value); | |
1248 | if (expanded) | |
1249 | { | |
1250 | /* Print the changes. */ | |
1251 | printf_unfiltered ("%s\n", history_value); | |
9e0b60a8 | 1252 | |
d318976c FN |
1253 | /* If there was an error, call this function again. */ |
1254 | if (expanded < 0) | |
1255 | { | |
b8c9b27d | 1256 | xfree (history_value); |
d318976c FN |
1257 | return command_line_input (prompt_arg, repeat, annotation_suffix); |
1258 | } | |
1259 | if (strlen (history_value) > linelength) | |
1260 | { | |
1261 | linelength = strlen (history_value) + 1; | |
1262 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1263 | } | |
1264 | strcpy (linebuffer, history_value); | |
1265 | p = linebuffer + strlen (linebuffer); | |
b8c9b27d | 1266 | xfree (history_value); |
d318976c FN |
1267 | } |
1268 | } | |
9e0b60a8 | 1269 | |
d318976c FN |
1270 | /* If we just got an empty line, and that is supposed |
1271 | to repeat the previous command, return the value in the | |
1272 | global buffer. */ | |
1273 | if (repeat && p == linebuffer) | |
1274 | return line; | |
1275 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); | |
1276 | if (repeat && !*p1) | |
1277 | return line; | |
9e0b60a8 | 1278 | |
d318976c | 1279 | *p = 0; |
9e0b60a8 | 1280 | |
d318976c FN |
1281 | /* Add line to history if appropriate. */ |
1282 | if (instream == stdin | |
1283 | && ISATTY (stdin) && *linebuffer) | |
1284 | add_history (linebuffer); | |
9e0b60a8 | 1285 | |
d318976c FN |
1286 | /* Note: lines consisting solely of comments are added to the command |
1287 | history. This is useful when you type a command, and then | |
1288 | realize you don't want to execute it quite yet. You can comment | |
1289 | out the command and then later fetch it from the value history | |
1290 | and remove the '#'. The kill ring is probably better, but some | |
1291 | people are in the habit of commenting things out. */ | |
1292 | if (*p1 == '#') | |
1293 | *p1 = '\0'; /* Found a comment. */ | |
9e0b60a8 | 1294 | |
d318976c FN |
1295 | /* Save into global buffer if appropriate. */ |
1296 | if (repeat) | |
1297 | { | |
1298 | if (linelength > linesize) | |
1299 | { | |
1300 | line = xrealloc (line, linelength); | |
1301 | linesize = linelength; | |
1302 | } | |
1303 | strcpy (line, linebuffer); | |
1304 | return line; | |
1305 | } | |
9e0b60a8 | 1306 | |
d318976c | 1307 | return linebuffer; |
9e0b60a8 JM |
1308 | } |
1309 | \f | |
1310 | /* Print the GDB banner. */ | |
1311 | void | |
fba45db2 | 1312 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
1313 | { |
1314 | /* From GNU coding standards, first line is meant to be easy for a | |
1315 | program to parse, and is just canonical program name and version | |
1316 | number, which starts after last space. */ | |
1317 | ||
1318 | fprintf_filtered (stream, "GNU gdb %s\n", version); | |
1319 | ||
1320 | /* Second line is a copyright notice. */ | |
1321 | ||
f86ddd7c | 1322 | fprintf_filtered (stream, "Copyright 2002 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
1323 | |
1324 | /* Following the copyright is a brief statement that the program is | |
1325 | free software, that users are free to copy and change it on | |
1326 | certain conditions, that it is covered by the GNU GPL, and that | |
1327 | there is no warranty. */ | |
1328 | ||
1329 | fprintf_filtered (stream, "\ | |
1330 | GDB is free software, covered by the GNU General Public License, and you are\n\ | |
1331 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
1332 | Type \"show copying\" to see the conditions.\n\ | |
1333 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
1334 | ||
1335 | /* After the required info we print the configuration information. */ | |
1336 | ||
1337 | fprintf_filtered (stream, "This GDB was configured as \""); | |
1338 | if (!STREQ (host_name, target_name)) | |
1339 | { | |
1340 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
1341 | } | |
1342 | else | |
1343 | { | |
1344 | fprintf_filtered (stream, "%s", host_name); | |
1345 | } | |
1346 | fprintf_filtered (stream, "\"."); | |
1347 | } | |
9e0b60a8 JM |
1348 | \f |
1349 | /* get_prompt: access method for the GDB prompt string. */ | |
1350 | ||
1351 | #define MAX_PROMPT_SIZE 256 | |
1352 | ||
1353 | /* | |
1354 | * int get_prompt_1 (char * buf); | |
1355 | * | |
1356 | * Work-horse for get_prompt (called via catch_errors). | |
1357 | * Argument is buffer to hold the formatted prompt. | |
1358 | * | |
1359 | * Returns: 1 for success (use formatted prompt) | |
1360 | * 0 for failure (use gdb_prompt_string). | |
c5aa993b | 1361 | */ |
9e0b60a8 JM |
1362 | |
1363 | static int gdb_prompt_escape; | |
1364 | ||
1365 | static int | |
710b33bd | 1366 | get_prompt_1 (void *data) |
9e0b60a8 | 1367 | { |
710b33bd | 1368 | char *formatted_prompt = data; |
9e0b60a8 JM |
1369 | char *local_prompt; |
1370 | ||
6426a772 | 1371 | if (event_loop_p) |
9e0b60a8 JM |
1372 | local_prompt = PROMPT (0); |
1373 | else | |
1374 | local_prompt = gdb_prompt_string; | |
1375 | ||
1376 | ||
1377 | if (gdb_prompt_escape == 0) | |
1378 | { | |
c5aa993b | 1379 | return 0; /* do no formatting */ |
9e0b60a8 | 1380 | } |
c5aa993b JM |
1381 | else |
1382 | /* formatted prompt */ | |
9e0b60a8 | 1383 | { |
c5aa993b | 1384 | char fmt[40], *promptp, *outp, *tmp; |
3d6d86c6 | 1385 | struct value *arg_val; |
c5aa993b JM |
1386 | DOUBLEST doubleval; |
1387 | LONGEST longval; | |
9e0b60a8 JM |
1388 | CORE_ADDR addrval; |
1389 | ||
1390 | int i, len; | |
1391 | struct type *arg_type, *elt_type; | |
1392 | ||
1393 | promptp = local_prompt; | |
c5aa993b | 1394 | outp = formatted_prompt; |
9e0b60a8 JM |
1395 | |
1396 | while (*promptp != '\0') | |
1397 | { | |
1398 | int available = MAX_PROMPT_SIZE - (outp - formatted_prompt) - 1; | |
1399 | ||
1400 | if (*promptp != gdb_prompt_escape) | |
1401 | { | |
c5aa993b | 1402 | if (available >= 1) /* overflow protect */ |
9e0b60a8 JM |
1403 | *outp++ = *promptp++; |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | /* GDB prompt string contains escape char. Parse for arg. | |
c5aa993b JM |
1408 | Two consecutive escape chars followed by arg followed by |
1409 | a comma means to insert the arg using a default format. | |
1410 | Otherwise a printf format string may be included between | |
1411 | the two escape chars. eg: | |
1412 | %%foo, insert foo using default format | |
1413 | %2.2f%foo, insert foo using "%2.2f" format | |
1414 | A mismatch between the format string and the data type | |
1415 | of "foo" is an error (which we don't know how to protect | |
1416 | against). */ | |
9e0b60a8 JM |
1417 | |
1418 | fmt[0] = '\0'; /* assume null format string */ | |
1419 | if (promptp[1] == gdb_prompt_escape) /* double esc char */ | |
1420 | { | |
1421 | promptp += 2; /* skip past two escape chars. */ | |
1422 | } | |
1423 | else | |
1424 | { | |
1425 | /* extract format string from between two esc chars */ | |
1426 | i = 0; | |
c5aa993b JM |
1427 | do |
1428 | { | |
1429 | fmt[i++] = *promptp++; /* copy format string */ | |
1430 | } | |
1431 | while (i < sizeof (fmt) - 1 && | |
1432 | *promptp != gdb_prompt_escape && | |
1433 | *promptp != '\0'); | |
9e0b60a8 JM |
1434 | |
1435 | if (*promptp != gdb_prompt_escape) | |
1436 | error ("Syntax error at prompt position %d", | |
1437 | promptp - local_prompt); | |
1438 | else | |
1439 | { | |
1440 | promptp++; /* skip second escape char */ | |
1441 | fmt[i++] = '\0'; /* terminate the format string */ | |
1442 | } | |
1443 | } | |
1444 | ||
1445 | arg_val = parse_to_comma_and_eval (&promptp); | |
1446 | if (*promptp == ',') | |
c5aa993b | 1447 | promptp++; /* skip past the comma */ |
9e0b60a8 | 1448 | arg_type = check_typedef (VALUE_TYPE (arg_val)); |
c5aa993b | 1449 | switch (TYPE_CODE (arg_type)) |
9e0b60a8 JM |
1450 | { |
1451 | case TYPE_CODE_ARRAY: | |
1452 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
c5aa993b | 1453 | if (TYPE_LENGTH (arg_type) > 0 && |
9e0b60a8 JM |
1454 | TYPE_LENGTH (elt_type) == 1 && |
1455 | TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
1456 | { | |
1457 | int len = TYPE_LENGTH (arg_type); | |
1458 | ||
1459 | if (VALUE_LAZY (arg_val)) | |
1460 | value_fetch_lazy (arg_val); | |
1461 | tmp = VALUE_CONTENTS (arg_val); | |
1462 | ||
1463 | if (len > available) | |
c5aa993b | 1464 | len = available; /* overflow protect */ |
9e0b60a8 JM |
1465 | |
1466 | /* FIXME: how to protect GDB from crashing | |
c5aa993b | 1467 | from bad user-supplied format string? */ |
9e0b60a8 JM |
1468 | if (fmt[0] != 0) |
1469 | sprintf (outp, fmt, tmp); | |
1470 | else | |
1471 | strncpy (outp, tmp, len); | |
1472 | outp[len] = '\0'; | |
1473 | } | |
1474 | break; | |
1475 | case TYPE_CODE_PTR: | |
1476 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
1aa20aa8 | 1477 | addrval = value_as_address (arg_val); |
9e0b60a8 JM |
1478 | |
1479 | if (TYPE_LENGTH (elt_type) == 1 && | |
c5aa993b | 1480 | TYPE_CODE (elt_type) == TYPE_CODE_INT && |
9e0b60a8 JM |
1481 | addrval != 0) |
1482 | { | |
1483 | /* display it as a string */ | |
1484 | char *default_fmt = "%s"; | |
1485 | char *tmp; | |
1486 | int err = 0; | |
1487 | ||
1488 | /* Limiting the number of bytes that the following call | |
c5aa993b JM |
1489 | will read protects us from sprintf overflow later. */ |
1490 | i = target_read_string (addrval, /* src */ | |
1491 | &tmp, /* dest */ | |
1492 | available, /* len */ | |
9e0b60a8 JM |
1493 | &err); |
1494 | if (err) /* read failed */ | |
1495 | error ("%s on target_read", safe_strerror (err)); | |
1496 | ||
1497 | tmp[i] = '\0'; /* force-terminate string */ | |
1498 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
1499 | from bad user-supplied format string? */ |
1500 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, | |
9e0b60a8 | 1501 | tmp); |
b8c9b27d | 1502 | xfree (tmp); |
9e0b60a8 JM |
1503 | } |
1504 | else | |
1505 | { | |
1506 | /* display it as a pointer */ | |
1507 | char *default_fmt = "0x%x"; | |
1508 | ||
1509 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
1510 | from bad user-supplied format string? */ |
1511 | if (available >= 16 /*? */ ) /* overflow protect */ | |
9e0b60a8 JM |
1512 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
1513 | (long) addrval); | |
1514 | } | |
1515 | break; | |
1516 | case TYPE_CODE_FLT: | |
1517 | { | |
1518 | char *default_fmt = "%g"; | |
1519 | ||
1520 | doubleval = value_as_double (arg_val); | |
1521 | /* FIXME: how to protect GDB from crashing | |
1522 | from bad user-supplied format string? */ | |
c5aa993b | 1523 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
1524 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
1525 | (double) doubleval); | |
1526 | break; | |
1527 | } | |
1528 | case TYPE_CODE_INT: | |
1529 | { | |
1530 | char *default_fmt = "%d"; | |
1531 | ||
1532 | longval = value_as_long (arg_val); | |
1533 | /* FIXME: how to protect GDB from crashing | |
1534 | from bad user-supplied format string? */ | |
c5aa993b | 1535 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
1536 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
1537 | (long) longval); | |
1538 | break; | |
1539 | } | |
1540 | case TYPE_CODE_BOOL: | |
1541 | { | |
1542 | /* no default format for bool */ | |
1543 | longval = value_as_long (arg_val); | |
c5aa993b | 1544 | if (available >= 8 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
1545 | { |
1546 | if (longval) | |
1547 | strcpy (outp, "<true>"); | |
1548 | else | |
1549 | strcpy (outp, "<false>"); | |
1550 | } | |
1551 | break; | |
1552 | } | |
1553 | case TYPE_CODE_ENUM: | |
1554 | { | |
1555 | /* no default format for enum */ | |
1556 | longval = value_as_long (arg_val); | |
1557 | len = TYPE_NFIELDS (arg_type); | |
1558 | /* find enum name if possible */ | |
1559 | for (i = 0; i < len; i++) | |
1560 | if (TYPE_FIELD_BITPOS (arg_type, i) == longval) | |
c5aa993b | 1561 | break; /* match -- end loop */ |
9e0b60a8 JM |
1562 | |
1563 | if (i < len) /* enum name found */ | |
1564 | { | |
1565 | char *name = TYPE_FIELD_NAME (arg_type, i); | |
1566 | ||
1567 | strncpy (outp, name, available); | |
1568 | /* in casel available < strlen (name), */ | |
1569 | outp[available] = '\0'; | |
1570 | } | |
1571 | else | |
1572 | { | |
c5aa993b | 1573 | if (available >= 16 /*? */ ) /* overflow protect */ |
d4f3574e | 1574 | sprintf (outp, "%ld", (long) longval); |
9e0b60a8 JM |
1575 | } |
1576 | break; | |
1577 | } | |
1578 | case TYPE_CODE_VOID: | |
1579 | *outp = '\0'; | |
1580 | break; /* void type -- no output */ | |
1581 | default: | |
1582 | error ("bad data type at prompt position %d", | |
1583 | promptp - local_prompt); | |
1584 | break; | |
1585 | } | |
1586 | outp += strlen (outp); | |
1587 | } | |
1588 | } | |
1589 | *outp++ = '\0'; /* terminate prompt string */ | |
1590 | return 1; | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | char * | |
fba45db2 | 1595 | get_prompt (void) |
9e0b60a8 JM |
1596 | { |
1597 | static char buf[MAX_PROMPT_SIZE]; | |
1598 | ||
c5aa993b | 1599 | if (catch_errors (get_prompt_1, buf, "bad formatted prompt: ", |
9e0b60a8 JM |
1600 | RETURN_MASK_ALL)) |
1601 | { | |
c5aa993b | 1602 | return &buf[0]; /* successful formatted prompt */ |
9e0b60a8 JM |
1603 | } |
1604 | else | |
1605 | { | |
1606 | /* Prompt could not be formatted. */ | |
6426a772 | 1607 | if (event_loop_p) |
9e0b60a8 JM |
1608 | return PROMPT (0); |
1609 | else | |
1610 | return gdb_prompt_string; | |
1611 | } | |
1612 | } | |
1613 | ||
1614 | void | |
fba45db2 | 1615 | set_prompt (char *s) |
9e0b60a8 JM |
1616 | { |
1617 | /* ??rehrauer: I don't know why this fails, since it looks as though | |
1618 | assignments to prompt are wrapped in calls to savestring... | |
c5aa993b | 1619 | if (prompt != NULL) |
b8c9b27d | 1620 | xfree (prompt); |
c5aa993b | 1621 | */ |
6426a772 | 1622 | if (event_loop_p) |
9e0b60a8 JM |
1623 | PROMPT (0) = savestring (s, strlen (s)); |
1624 | else | |
1625 | gdb_prompt_string = savestring (s, strlen (s)); | |
1626 | } | |
9e0b60a8 | 1627 | \f |
c5aa993b | 1628 | |
9e0b60a8 JM |
1629 | /* If necessary, make the user confirm that we should quit. Return |
1630 | non-zero if we should quit, zero if we shouldn't. */ | |
1631 | ||
1632 | int | |
fba45db2 | 1633 | quit_confirm (void) |
9e0b60a8 | 1634 | { |
39f77062 | 1635 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
9e0b60a8 JM |
1636 | { |
1637 | char *s; | |
1638 | ||
1639 | /* This is something of a hack. But there's no reliable way to | |
c5aa993b JM |
1640 | see if a GUI is running. The `use_windows' variable doesn't |
1641 | cut it. */ | |
9e0b60a8 JM |
1642 | if (init_ui_hook) |
1643 | s = "A debugging session is active.\nDo you still want to close the debugger?"; | |
1644 | else if (attach_flag) | |
1645 | s = "The program is running. Quit anyway (and detach it)? "; | |
1646 | else | |
1647 | s = "The program is running. Exit anyway? "; | |
1648 | ||
c5aa993b | 1649 | if (!query (s)) |
9e0b60a8 JM |
1650 | return 0; |
1651 | } | |
1652 | ||
1653 | return 1; | |
1654 | } | |
1655 | ||
1656 | /* Quit without asking for confirmation. */ | |
1657 | ||
1658 | void | |
fba45db2 | 1659 | quit_force (char *args, int from_tty) |
9e0b60a8 JM |
1660 | { |
1661 | int exit_code = 0; | |
1662 | ||
1663 | /* An optional expression may be used to cause gdb to terminate with the | |
1664 | value of that expression. */ | |
1665 | if (args) | |
1666 | { | |
3d6d86c6 | 1667 | struct value *val = parse_and_eval (args); |
9e0b60a8 JM |
1668 | |
1669 | exit_code = (int) value_as_long (val); | |
1670 | } | |
1671 | ||
39f77062 | 1672 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
9e0b60a8 JM |
1673 | { |
1674 | if (attach_flag) | |
1675 | target_detach (args, from_tty); | |
1676 | else | |
1677 | target_kill (); | |
1678 | } | |
1679 | ||
1680 | /* UDI wants this, to kill the TIP. */ | |
1681 | target_close (1); | |
1682 | ||
1683 | /* Save the history information if it is appropriate to do so. */ | |
1684 | if (write_history_p && history_filename) | |
1685 | write_history (history_filename); | |
1686 | ||
c5aa993b | 1687 | do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
9e0b60a8 | 1688 | |
9e0b60a8 JM |
1689 | exit (exit_code); |
1690 | } | |
1691 | ||
9e0b60a8 JM |
1692 | /* Returns whether GDB is running on a terminal and whether the user |
1693 | desires that questions be asked of them on that terminal. */ | |
1694 | ||
1695 | int | |
fba45db2 | 1696 | input_from_terminal_p (void) |
9e0b60a8 JM |
1697 | { |
1698 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
1699 | } | |
1700 | \f | |
9e0b60a8 JM |
1701 | /* ARGSUSED */ |
1702 | static void | |
fba45db2 | 1703 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 1704 | { |
c5aa993b JM |
1705 | *line = 0; /* Can't call dont_repeat here because we're not |
1706 | necessarily reading from stdin. */ | |
9e0b60a8 JM |
1707 | } |
1708 | \f | |
1709 | /* Functions to manipulate command line editing control variables. */ | |
1710 | ||
1711 | /* Number of commands to print in each call to show_commands. */ | |
1712 | #define Hist_print 10 | |
d318976c | 1713 | void |
fba45db2 | 1714 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
1715 | { |
1716 | /* Index for history commands. Relative to history_base. */ | |
1717 | int offset; | |
1718 | ||
1719 | /* Number of the history entry which we are planning to display next. | |
1720 | Relative to history_base. */ | |
1721 | static int num = 0; | |
1722 | ||
1723 | /* The first command in the history which doesn't exist (i.e. one more | |
1724 | than the number of the last command). Relative to history_base. */ | |
1725 | int hist_len; | |
1726 | ||
9e0b60a8 JM |
1727 | /* Print out some of the commands from the command history. */ |
1728 | /* First determine the length of the history list. */ | |
1729 | hist_len = history_size; | |
1730 | for (offset = 0; offset < history_size; offset++) | |
1731 | { | |
1732 | if (!history_get (history_base + offset)) | |
1733 | { | |
1734 | hist_len = offset; | |
1735 | break; | |
1736 | } | |
1737 | } | |
1738 | ||
1739 | if (args) | |
1740 | { | |
1741 | if (args[0] == '+' && args[1] == '\0') | |
1742 | /* "info editing +" should print from the stored position. */ | |
1743 | ; | |
1744 | else | |
1745 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 1746 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
1747 | } |
1748 | /* "show commands" means print the last Hist_print commands. */ | |
1749 | else | |
1750 | { | |
1751 | num = hist_len - Hist_print; | |
1752 | } | |
1753 | ||
1754 | if (num < 0) | |
1755 | num = 0; | |
1756 | ||
1757 | /* If there are at least Hist_print commands, we want to display the last | |
1758 | Hist_print rather than, say, the last 6. */ | |
1759 | if (hist_len - num < Hist_print) | |
1760 | { | |
1761 | num = hist_len - Hist_print; | |
1762 | if (num < 0) | |
1763 | num = 0; | |
1764 | } | |
1765 | ||
1766 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
1767 | { | |
1768 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 1769 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
1770 | } |
1771 | ||
1772 | /* The next command we want to display is the next one that we haven't | |
1773 | displayed yet. */ | |
1774 | num += Hist_print; | |
1775 | ||
1776 | /* If the user repeats this command with return, it should do what | |
1777 | "show commands +" does. This is unnecessary if arg is null, | |
1778 | because "show commands +" is not useful after "show commands". */ | |
1779 | if (from_tty && args) | |
1780 | { | |
1781 | args[0] = '+'; | |
1782 | args[1] = '\0'; | |
1783 | } | |
1784 | } | |
1785 | ||
1786 | /* Called by do_setshow_command. */ | |
1787 | /* ARGSUSED */ | |
1788 | static void | |
fba45db2 | 1789 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
1790 | { |
1791 | if (history_size == INT_MAX) | |
1792 | unstifle_history (); | |
1793 | else if (history_size >= 0) | |
1794 | stifle_history (history_size); | |
1795 | else | |
1796 | { | |
1797 | history_size = INT_MAX; | |
1798 | error ("History size must be non-negative"); | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | /* ARGSUSED */ | |
d318976c | 1803 | void |
fba45db2 | 1804 | set_history (char *args, int from_tty) |
9e0b60a8 JM |
1805 | { |
1806 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
1807 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
1808 | } | |
1809 | ||
1810 | /* ARGSUSED */ | |
d318976c | 1811 | void |
fba45db2 | 1812 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
1813 | { |
1814 | cmd_show_list (showhistlist, from_tty, ""); | |
1815 | } | |
1816 | ||
1817 | int info_verbose = 0; /* Default verbose msgs off */ | |
1818 | ||
1819 | /* Called by do_setshow_command. An elaborate joke. */ | |
1820 | /* ARGSUSED */ | |
d318976c | 1821 | void |
fba45db2 | 1822 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
1823 | { |
1824 | char *cmdname = "verbose"; | |
1825 | struct cmd_list_element *showcmd; | |
1826 | ||
1827 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1828 | ||
1829 | if (info_verbose) | |
1830 | { | |
1831 | c->doc = "Set verbose printing of informational messages."; | |
1832 | showcmd->doc = "Show verbose printing of informational messages."; | |
1833 | } | |
1834 | else | |
1835 | { | |
1836 | c->doc = "Set verbosity."; | |
1837 | showcmd->doc = "Show verbosity."; | |
1838 | } | |
1839 | } | |
1840 | ||
9e0b60a8 JM |
1841 | /* Init the history buffer. Note that we are called after the init file(s) |
1842 | * have been read so that the user can change the history file via his | |
1843 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1844 | * overrides all of this. | |
1845 | */ | |
1846 | ||
1847 | void | |
fba45db2 | 1848 | init_history (void) |
9e0b60a8 JM |
1849 | { |
1850 | char *tmpenv; | |
1851 | ||
1852 | tmpenv = getenv ("HISTSIZE"); | |
1853 | if (tmpenv) | |
1854 | history_size = atoi (tmpenv); | |
1855 | else if (!history_size) | |
1856 | history_size = 256; | |
1857 | ||
1858 | stifle_history (history_size); | |
1859 | ||
1860 | tmpenv = getenv ("GDBHISTFILE"); | |
1861 | if (tmpenv) | |
c5aa993b JM |
1862 | history_filename = savestring (tmpenv, strlen (tmpenv)); |
1863 | else if (!history_filename) | |
1864 | { | |
1865 | /* We include the current directory so that if the user changes | |
1866 | directories the file written will be the same as the one | |
1867 | that was read. */ | |
a0b3c4fd | 1868 | #ifdef __MSDOS__ |
eb2f494a AC |
1869 | /* No leading dots in file names are allowed on MSDOS. */ |
1870 | history_filename = concat (current_directory, "/_gdb_history", NULL); | |
a0b3c4fd | 1871 | #else |
c5aa993b | 1872 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
a0b3c4fd | 1873 | #endif |
c5aa993b | 1874 | } |
9e0b60a8 JM |
1875 | read_history (history_filename); |
1876 | } | |
1877 | ||
1878 | static void | |
fba45db2 | 1879 | init_main (void) |
9e0b60a8 JM |
1880 | { |
1881 | struct cmd_list_element *c; | |
1882 | ||
1883 | /* If we are running the asynchronous version, | |
1884 | we initialize the prompts differently. */ | |
6426a772 | 1885 | if (!event_loop_p) |
9e0b60a8 | 1886 | { |
c5aa993b | 1887 | gdb_prompt_string = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
9e0b60a8 JM |
1888 | } |
1889 | else | |
1890 | { | |
1891 | /* initialize the prompt stack to a simple "(gdb) " prompt or to | |
96baa820 | 1892 | whatever the DEFAULT_PROMPT is. */ |
9e0b60a8 | 1893 | the_prompts.top = 0; |
c5aa993b | 1894 | PREFIX (0) = ""; |
c5aa993b | 1895 | PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
c5aa993b | 1896 | SUFFIX (0) = ""; |
9e0b60a8 | 1897 | /* Set things up for annotation_level > 1, if the user ever decides |
c5aa993b | 1898 | to use it. */ |
9e0b60a8 JM |
1899 | async_annotation_suffix = "prompt"; |
1900 | /* Set the variable associated with the setshow prompt command. */ | |
1901 | new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0))); | |
0191bed7 EZ |
1902 | |
1903 | /* If gdb was started with --annotate=2, this is equivalent to | |
1904 | the user entering the command 'set annotate 2' at the gdb | |
1905 | prompt, so we need to do extra processing. */ | |
1906 | if (annotation_level > 1) | |
1907 | set_async_annotation_level (NULL, 0, NULL); | |
9e0b60a8 JM |
1908 | } |
1909 | gdb_prompt_escape = 0; /* default to none. */ | |
1910 | ||
1911 | /* Set the important stuff up for command editing. */ | |
1912 | command_editing_p = 1; | |
9e0b60a8 JM |
1913 | history_expansion_p = 0; |
1914 | write_history_p = 0; | |
1915 | ||
1916 | /* Setup important stuff for command line editing. */ | |
1917 | rl_completion_entry_function = (int (*)()) readline_line_completion_function; | |
d318976c FN |
1918 | rl_completer_word_break_characters = |
1919 | get_gdb_completer_word_break_characters (); | |
1920 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); | |
9e0b60a8 JM |
1921 | rl_readline_name = "gdb"; |
1922 | ||
467d8519 TT |
1923 | /* The name for this defun comes from Bash, where it originated. |
1924 | 15 is Control-o, the same binding this function has in Bash. */ | |
1925 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1926 | ||
9e0b60a8 JM |
1927 | /* The set prompt command is different depending whether or not the |
1928 | async version is run. NOTE: this difference is going to | |
1929 | disappear as we make the event loop be the default engine of | |
1930 | gdb. */ | |
6426a772 | 1931 | if (!event_loop_p) |
9e0b60a8 JM |
1932 | { |
1933 | add_show_from_set | |
c5aa993b | 1934 | (add_set_cmd ("prompt", class_support, var_string, |
9e0b60a8 JM |
1935 | (char *) &gdb_prompt_string, "Set gdb's prompt", |
1936 | &setlist), | |
1937 | &showlist); | |
1938 | } | |
1939 | else | |
1940 | { | |
c5aa993b JM |
1941 | c = add_set_cmd ("prompt", class_support, var_string, |
1942 | (char *) &new_async_prompt, "Set gdb's prompt", | |
9e0b60a8 JM |
1943 | &setlist); |
1944 | add_show_from_set (c, &showlist); | |
9f60d481 | 1945 | set_cmd_sfunc (c, set_async_prompt); |
9e0b60a8 JM |
1946 | } |
1947 | ||
1948 | add_show_from_set | |
c5aa993b | 1949 | (add_set_cmd ("prompt-escape-char", class_support, var_zinteger, |
9e0b60a8 JM |
1950 | (char *) &gdb_prompt_escape, |
1951 | "Set escape character for formatting of gdb's prompt", | |
1952 | &setlist), | |
1953 | &showlist); | |
1954 | ||
9e0b60a8 JM |
1955 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ |
1956 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
1957 | hitting return."); | |
1958 | ||
9e0b60a8 JM |
1959 | /* The set editing command is different depending whether or not the |
1960 | async version is run. NOTE: this difference is going to disappear | |
1961 | as we make the event loop be the default engine of gdb. */ | |
6426a772 | 1962 | if (!event_loop_p) |
9e0b60a8 JM |
1963 | { |
1964 | add_show_from_set | |
c5aa993b | 1965 | (add_set_cmd ("editing", class_support, var_boolean, (char *) &command_editing_p, |
9e0b60a8 JM |
1966 | "Set editing of command lines as they are typed.\n\ |
1967 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
1968 | Without an argument, command line editing is enabled. To edit, use\n\ | |
1969 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
1970 | &showlist); | |
1971 | } | |
1972 | else | |
1973 | { | |
c5aa993b | 1974 | c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p, |
9e0b60a8 JM |
1975 | "Set editing of command lines as they are typed.\n\ |
1976 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
1977 | Without an argument, command line editing is enabled. To edit, use\n\ | |
1978 | EMACS-like or VI-like commands like control-P or ESC.", &setlist); | |
1979 | ||
1980 | add_show_from_set (c, &showlist); | |
9f60d481 | 1981 | set_cmd_sfunc (c, set_async_editing_command); |
9e0b60a8 JM |
1982 | } |
1983 | ||
9e0b60a8 | 1984 | add_show_from_set |
c5aa993b JM |
1985 | (add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p, |
1986 | "Set saving of the history record on exit.\n\ | |
9e0b60a8 JM |
1987 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
1988 | Without an argument, saving is enabled.", &sethistlist), | |
1989 | &showhistlist); | |
1990 | ||
c5aa993b | 1991 | c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size, |
9e0b60a8 JM |
1992 | "Set the size of the command history, \n\ |
1993 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
1994 | add_show_from_set (c, &showhistlist); | |
9f60d481 | 1995 | set_cmd_sfunc (c, set_history_size_command); |
9e0b60a8 | 1996 | |
7a1bd56a EZ |
1997 | c = add_set_cmd ("filename", no_class, var_filename, |
1998 | (char *) &history_filename, | |
1999 | "Set the filename in which to record the command history\n\ | |
2000 | (the list of previous commands of which a record is kept).", &sethistlist); | |
5ba2abeb | 2001 | set_cmd_completer (c, filename_completer); |
7a1bd56a | 2002 | add_show_from_set (c, &showhistlist); |
9e0b60a8 JM |
2003 | |
2004 | add_show_from_set | |
2005 | (add_set_cmd ("confirm", class_support, var_boolean, | |
c5aa993b | 2006 | (char *) &caution, |
9e0b60a8 JM |
2007 | "Set whether to confirm potentially dangerous operations.", |
2008 | &setlist), | |
2009 | &showlist); | |
2010 | ||
9e0b60a8 JM |
2011 | /* The set annotate command is different depending whether or not |
2012 | the async version is run. NOTE: this difference is going to | |
2013 | disappear as we make the event loop be the default engine of | |
2014 | gdb. */ | |
6426a772 | 2015 | if (!event_loop_p) |
9e0b60a8 | 2016 | { |
c5aa993b JM |
2017 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
2018 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
2019 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
2020 | 2 == output annotated suitably for use by programs that control GDB.", | |
2021 | &setlist); | |
2022 | c = add_show_from_set (c, &showlist); | |
2023 | } | |
2024 | else | |
2025 | { | |
c5aa993b JM |
2026 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
2027 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
2028 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
2029 | 2 == output annotated suitably for use by programs that control GDB.", | |
c5aa993b | 2030 | &setlist); |
9e0b60a8 | 2031 | add_show_from_set (c, &showlist); |
9f60d481 | 2032 | set_cmd_sfunc (c, set_async_annotation_level); |
9e0b60a8 | 2033 | } |
6426a772 | 2034 | if (event_loop_p) |
104c1213 JM |
2035 | { |
2036 | add_show_from_set | |
2037 | (add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p, | |
2038 | "Set notification of completion for asynchronous execution commands.\n\ | |
2039 | Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist), | |
2040 | &showlist); | |
2041 | } | |
9e0b60a8 | 2042 | } |
64cdedad EZ |
2043 | |
2044 | void | |
2045 | gdb_init (char *argv0) | |
2046 | { | |
2047 | if (pre_init_ui_hook) | |
2048 | pre_init_ui_hook (); | |
2049 | ||
2050 | /* Run the init function of each source file */ | |
2051 | ||
2052 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
2053 | current_directory = gdb_dirbuf; | |
2054 | ||
2055 | #ifdef __MSDOS__ | |
2056 | /* Make sure we return to the original directory upon exit, come | |
2057 | what may, since the OS doesn't do that for us. */ | |
2058 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
2059 | #endif | |
2060 | ||
2061 | init_cmd_lists (); /* This needs to be done first */ | |
2062 | initialize_targets (); /* Setup target_terminal macros for utils.c */ | |
2063 | initialize_utils (); /* Make errors and warnings possible */ | |
2064 | initialize_all_files (); | |
2065 | initialize_current_architecture (); | |
2066 | init_cli_cmds(); | |
2067 | init_main (); /* But that omits this file! Do it now */ | |
2068 | ||
2069 | /* The signal handling mechanism is different depending whether or | |
2070 | not the async version is run. NOTE: in the future we plan to make | |
2071 | the event loop be the default engine of gdb, and this difference | |
2072 | will disappear. */ | |
2073 | if (event_loop_p) | |
2074 | async_init_signals (); | |
2075 | else | |
2076 | init_signals (); | |
2077 | ||
2078 | /* We need a default language for parsing expressions, so simple things like | |
2079 | "set width 0" won't fail if no language is explicitly set in a config file | |
2080 | or implicitly set by reading an executable during startup. */ | |
2081 | set_language (language_c); | |
2082 | expected_language = current_language; /* don't warn about the change. */ | |
2083 | ||
1ad24239 KS |
2084 | /* Allow another UI to initialize. If the UI fails to initialize, and |
2085 | it wants GDB to revert to the CLI, it should clear init_ui_hook. */ | |
2086 | if (init_ui_hook) | |
2087 | init_ui_hook (argv0); | |
2088 | ||
64cdedad EZ |
2089 | /* Install the default UI */ |
2090 | if (!init_ui_hook) | |
2091 | { | |
2092 | uiout = cli_out_new (gdb_stdout); | |
2093 | ||
2094 | /* All the interpreters should have had a look at things by now. | |
2095 | Initialize the selected interpreter. */ | |
2096 | if (interpreter_p) | |
2097 | { | |
2098 | fprintf_unfiltered (gdb_stderr, "Interpreter `%s' unrecognized.\n", | |
2099 | interpreter_p); | |
2100 | exit (1); | |
2101 | } | |
2102 | } | |
64cdedad | 2103 | } |