Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Top level stuff for GDB, the GNU debugger. |
2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "gdbcmd.h" | |
23 | #include "call-cmds.h" | |
24 | #include "symtab.h" | |
25 | #include "inferior.h" | |
26 | #include "signals.h" | |
27 | #include "target.h" | |
28 | #include "breakpoint.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "value.h" | |
32 | #include "language.h" | |
33 | #include "terminal.h" /* For job_control. */ | |
34 | #include "annotate.h" | |
c906108c | 35 | #include "top.h" |
cd0fc7c3 | 36 | #include "event-loop.h" |
c906108c SS |
37 | |
38 | /* readline include files */ | |
39 | #include <readline/readline.h> | |
40 | #include <readline/history.h> | |
41 | ||
42 | /* readline defines this. */ | |
43 | #undef savestring | |
44 | ||
45 | #include <sys/types.h> | |
46 | #ifdef HAVE_UNISTD_H | |
47 | #include <unistd.h> | |
48 | #endif | |
49 | ||
50 | #include "gdb_string.h" | |
51 | #include "gdb_stat.h" | |
52 | #include <ctype.h> | |
53 | ||
54 | extern void initialize_utils PARAMS ((void)); | |
55 | ||
56 | /* Prototypes for local functions */ | |
57 | ||
58 | static void dont_repeat_command PARAMS ((char *, int)); | |
59 | ||
60 | static void source_cleanup_lines PARAMS ((PTR)); | |
61 | ||
62 | static void user_defined_command PARAMS ((char *, int)); | |
63 | ||
64 | static void init_signals PARAMS ((void)); | |
65 | ||
66 | #ifdef STOP_SIGNAL | |
67 | static void stop_sig PARAMS ((int)); | |
68 | #endif | |
69 | ||
70 | static char * line_completion_function PARAMS ((char *, int, char *, int)); | |
71 | ||
72 | static char * readline_line_completion_function PARAMS ((char *, int)); | |
73 | ||
cd0fc7c3 SS |
74 | /* NOTE 4/29/99: this function will be static again, after we make the |
75 | event loop be the default command loop for gdb, and we merge | |
76 | event-top.c into this file, top.c */ | |
77 | /* static */ void command_loop_marker PARAMS ((int)); | |
78 | ||
79 | extern void set_async_editing_command PARAMS ((char *, int, struct cmd_list_element *)); | |
80 | ||
81 | extern void set_async_annotation_level PARAMS ((char *, int, struct cmd_list_element *)); | |
82 | ||
83 | extern void set_async_prompt PARAMS ((char *, int, struct cmd_list_element *)); | |
c906108c SS |
84 | |
85 | static void while_command PARAMS ((char *, int)); | |
86 | ||
87 | static void if_command PARAMS ((char *, int)); | |
88 | ||
89 | static struct command_line * | |
90 | build_command_line PARAMS ((enum command_control_type, char *)); | |
91 | ||
92 | static struct command_line * | |
93 | get_command_line PARAMS ((enum command_control_type, char *)); | |
94 | ||
95 | static void realloc_body_list PARAMS ((struct command_line *, int)); | |
96 | ||
97 | static enum misc_command_type read_next_line PARAMS ((struct command_line **)); | |
98 | ||
99 | static enum command_control_type | |
100 | recurse_read_control_structure PARAMS ((struct command_line *)); | |
101 | ||
102 | static struct cleanup * setup_user_args PARAMS ((char *)); | |
103 | ||
104 | static char * locate_arg PARAMS ((char *)); | |
105 | ||
106 | static char * insert_args PARAMS ((char *)); | |
107 | ||
108 | static void arg_cleanup PARAMS ((void)); | |
109 | ||
110 | static void init_main PARAMS ((void)); | |
111 | ||
112 | static void init_cmd_lists PARAMS ((void)); | |
113 | ||
114 | static void float_handler PARAMS ((int)); | |
115 | ||
116 | static void init_signals PARAMS ((void)); | |
117 | ||
118 | static void set_verbose PARAMS ((char *, int, struct cmd_list_element *)); | |
119 | ||
120 | static void show_history PARAMS ((char *, int)); | |
121 | ||
122 | static void set_history PARAMS ((char *, int)); | |
123 | ||
124 | static void set_history_size_command PARAMS ((char *, int, | |
125 | struct cmd_list_element *)); | |
126 | ||
127 | static void show_commands PARAMS ((char *, int)); | |
128 | ||
129 | static void echo_command PARAMS ((char *, int)); | |
130 | ||
131 | static void pwd_command PARAMS ((char *, int)); | |
132 | ||
133 | static void show_version PARAMS ((char *, int)); | |
134 | ||
135 | static void document_command PARAMS ((char *, int)); | |
136 | ||
137 | static void define_command PARAMS ((char *, int)); | |
138 | ||
139 | static void validate_comname PARAMS ((char *)); | |
140 | ||
141 | static void help_command PARAMS ((char *, int)); | |
142 | ||
143 | static void show_command PARAMS ((char *, int)); | |
144 | ||
145 | static void info_command PARAMS ((char *, int)); | |
146 | ||
147 | static void complete_command PARAMS ((char *, int)); | |
148 | ||
149 | static void do_nothing PARAMS ((int)); | |
150 | ||
151 | #ifdef SIGHUP | |
cd0fc7c3 SS |
152 | /* NOTE 4/29/99: This function will be static again, once we modify |
153 | gdb to use the event loop as the default command loop and we merge | |
154 | event-top.c into this file, top.c */ | |
155 | /* static */ int quit_cover PARAMS ((PTR)); | |
c906108c SS |
156 | |
157 | static void disconnect PARAMS ((int)); | |
158 | #endif | |
159 | ||
160 | static void source_cleanup PARAMS ((FILE *)); | |
161 | ||
162 | /* If this definition isn't overridden by the header files, assume | |
163 | that isatty and fileno exist on this system. */ | |
164 | #ifndef ISATTY | |
165 | #define ISATTY(FP) (isatty (fileno (FP))) | |
166 | #endif | |
167 | ||
168 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
169 | ||
170 | #ifndef GDBINIT_FILENAME | |
171 | #define GDBINIT_FILENAME ".gdbinit" | |
172 | #endif | |
173 | char gdbinit[] = GDBINIT_FILENAME; | |
174 | ||
175 | int inhibit_gdbinit = 0; | |
176 | ||
177 | /* If nonzero, and GDB has been configured to be able to use windows, | |
178 | attempt to open them upon startup. */ | |
179 | ||
180 | int use_windows = 1; | |
181 | ||
182 | /* Version number of GDB, as a string. */ | |
183 | ||
184 | extern char *version; | |
185 | ||
186 | /* Canonical host name as a string. */ | |
187 | ||
188 | extern char *host_name; | |
189 | ||
190 | /* Canonical target name as a string. */ | |
191 | ||
192 | extern char *target_name; | |
193 | ||
194 | extern char lang_frame_mismatch_warn[]; /* language.c */ | |
195 | ||
196 | /* Flag for whether we want all the "from_tty" gubbish printed. */ | |
197 | ||
198 | int caution = 1; /* Default is yes, sigh. */ | |
199 | ||
200 | /* Define all cmd_list_elements. */ | |
201 | ||
202 | /* Chain containing all defined commands. */ | |
203 | ||
204 | struct cmd_list_element *cmdlist; | |
205 | ||
206 | /* Chain containing all defined info subcommands. */ | |
207 | ||
208 | struct cmd_list_element *infolist; | |
209 | ||
210 | /* Chain containing all defined enable subcommands. */ | |
211 | ||
212 | struct cmd_list_element *enablelist; | |
213 | ||
214 | /* Chain containing all defined disable subcommands. */ | |
215 | ||
216 | struct cmd_list_element *disablelist; | |
217 | ||
218 | /* Chain containing all defined toggle subcommands. */ | |
219 | ||
220 | struct cmd_list_element *togglelist; | |
221 | ||
222 | /* Chain containing all defined stop subcommands. */ | |
223 | ||
224 | struct cmd_list_element *stoplist; | |
225 | ||
226 | /* Chain containing all defined delete subcommands. */ | |
227 | ||
228 | struct cmd_list_element *deletelist; | |
229 | ||
230 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
231 | ||
232 | struct cmd_list_element *enablebreaklist; | |
233 | ||
234 | /* Chain containing all defined set subcommands */ | |
235 | ||
236 | struct cmd_list_element *setlist; | |
237 | ||
238 | /* Chain containing all defined unset subcommands */ | |
239 | ||
240 | struct cmd_list_element *unsetlist; | |
241 | ||
242 | /* Chain containing all defined show subcommands. */ | |
243 | ||
244 | struct cmd_list_element *showlist; | |
245 | ||
246 | /* Chain containing all defined \"set history\". */ | |
247 | ||
248 | struct cmd_list_element *sethistlist; | |
249 | ||
250 | /* Chain containing all defined \"show history\". */ | |
251 | ||
252 | struct cmd_list_element *showhistlist; | |
253 | ||
254 | /* Chain containing all defined \"unset history\". */ | |
255 | ||
256 | struct cmd_list_element *unsethistlist; | |
257 | ||
258 | /* Chain containing all defined maintenance subcommands. */ | |
259 | ||
c906108c | 260 | struct cmd_list_element *maintenancelist; |
c906108c SS |
261 | |
262 | /* Chain containing all defined "maintenance info" subcommands. */ | |
263 | ||
c906108c | 264 | struct cmd_list_element *maintenanceinfolist; |
c906108c SS |
265 | |
266 | /* Chain containing all defined "maintenance print" subcommands. */ | |
267 | ||
c906108c | 268 | struct cmd_list_element *maintenanceprintlist; |
c906108c SS |
269 | |
270 | struct cmd_list_element *setprintlist; | |
271 | ||
272 | struct cmd_list_element *showprintlist; | |
273 | ||
274 | struct cmd_list_element *setchecklist; | |
275 | ||
276 | struct cmd_list_element *showchecklist; | |
277 | ||
278 | /* stdio stream that command input is being read from. Set to stdin normally. | |
279 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
280 | executing a user-defined command or interacting via a GUI. */ | |
281 | ||
282 | FILE *instream; | |
283 | ||
284 | /* Current working directory. */ | |
285 | ||
286 | char *current_directory; | |
287 | ||
288 | /* The directory name is actually stored here (usually). */ | |
289 | char gdb_dirbuf[1024]; | |
290 | ||
291 | /* Function to call before reading a command, if nonzero. | |
292 | The function receives two args: an input stream, | |
293 | and a prompt string. */ | |
294 | ||
295 | void (*window_hook) PARAMS ((FILE *, char *)); | |
296 | ||
297 | int epoch_interface; | |
298 | int xgdb_verbose; | |
299 | ||
300 | /* gdb prints this when reading a command interactively */ | |
301 | static char *prompt; | |
302 | ||
303 | /* Buffer used for reading command lines, and the size | |
304 | allocated for it so far. */ | |
305 | ||
306 | char *line; | |
307 | int linesize = 100; | |
308 | ||
309 | /* Nonzero if the current command is modified by "server ". This | |
310 | affects things like recording into the command history, comamnds | |
311 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, | |
312 | whatever) can issue its own commands and also send along commands | |
313 | from the user, and have the user not notice that the user interface | |
314 | is issuing commands too. */ | |
315 | int server_command; | |
316 | ||
317 | /* Baud rate specified for talking to serial target systems. Default | |
318 | is left as -1, so targets can choose their own defaults. */ | |
319 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 | |
320 | or (unsigned int)-1. This is a Bad User Interface. */ | |
321 | ||
322 | int baud_rate = -1; | |
323 | ||
324 | /* Timeout limit for response from target. */ | |
325 | ||
326 | int remote_timeout = 20; /* Set default to 20 */ | |
327 | ||
328 | /* Non-zero tells remote* modules to output debugging info. */ | |
329 | ||
330 | int remote_debug = 0; | |
331 | ||
332 | /* Level of control structure. */ | |
333 | static int control_level; | |
334 | ||
335 | /* Structure for arguments to user defined functions. */ | |
336 | #define MAXUSERARGS 10 | |
337 | struct user_args | |
338 | { | |
339 | struct user_args *next; | |
340 | struct | |
341 | { | |
342 | char *arg; | |
343 | int len; | |
344 | } a[MAXUSERARGS]; | |
345 | int count; | |
346 | } *user_args; | |
347 | ||
348 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
349 | ||
350 | #ifndef STOP_SIGNAL | |
351 | #ifdef SIGTSTP | |
352 | #define STOP_SIGNAL SIGTSTP | |
353 | static void stop_sig PARAMS ((int)); | |
354 | #endif | |
355 | #endif | |
356 | ||
357 | /* Some System V have job control but not sigsetmask(). */ | |
358 | #if !defined (HAVE_SIGSETMASK) | |
359 | #if !defined (USG) | |
360 | #define HAVE_SIGSETMASK 1 | |
361 | #else | |
362 | #define HAVE_SIGSETMASK 0 | |
363 | #endif | |
364 | #endif | |
365 | ||
366 | #if 0 == (HAVE_SIGSETMASK) | |
367 | #define sigsetmask(n) | |
368 | #endif | |
369 | ||
370 | /* Hooks for alternate command interfaces. */ | |
371 | ||
372 | /* Called after most modules have been initialized, but before taking users | |
373 | command file. */ | |
374 | ||
375 | void (*init_ui_hook) PARAMS ((char *argv0)); | |
7a292a7a SS |
376 | |
377 | /* This hook is called from within gdb's many mini-event loops which could | |
378 | steal control from a real user interface's event loop. It returns | |
379 | non-zero if the user is requesting a detach, zero otherwise. */ | |
380 | ||
381 | int (*ui_loop_hook) PARAMS ((int)); | |
c906108c SS |
382 | |
383 | /* Called instead of command_loop at top level. Can be invoked via | |
384 | return_to_top_level. */ | |
385 | ||
386 | void (*command_loop_hook) PARAMS ((void)); | |
387 | ||
388 | ||
389 | /* Called instead of fputs for all output. */ | |
390 | ||
391 | void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer, GDB_FILE *stream)); | |
392 | ||
393 | /* Called when the target says something to the host, which may | |
394 | want to appear in a different window. */ | |
395 | ||
396 | void (*target_output_hook) PARAMS ((char *)); | |
397 | ||
398 | /* Called from print_frame_info to list the line we stopped in. */ | |
399 | ||
400 | void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s, int line, | |
401 | int stopline, int noerror)); | |
402 | /* Replaces most of query. */ | |
403 | ||
404 | int (*query_hook) PARAMS ((const char *, va_list)); | |
405 | ||
406 | /* Replaces most of warning. */ | |
407 | ||
408 | void (*warning_hook) PARAMS ((const char *, va_list)); | |
409 | ||
410 | /* Called from gdb_flush to flush output. */ | |
411 | ||
412 | void (*flush_hook) PARAMS ((GDB_FILE *stream)); | |
413 | ||
414 | /* These three functions support getting lines of text from the user. They | |
415 | are used in sequence. First readline_begin_hook is called with a text | |
416 | string that might be (for example) a message for the user to type in a | |
417 | sequence of commands to be executed at a breakpoint. If this function | |
418 | calls back to a GUI, it might take this opportunity to pop up a text | |
419 | interaction window with this message. Next, readline_hook is called | |
420 | with a prompt that is emitted prior to collecting the user input. | |
421 | It can be called multiple times. Finally, readline_end_hook is called | |
422 | to notify the GUI that we are done with the interaction window and it | |
423 | can close it. */ | |
424 | ||
425 | void (*readline_begin_hook) PARAMS ((char *, ...)); | |
426 | char * (*readline_hook) PARAMS ((char *)); | |
427 | void (*readline_end_hook) PARAMS ((void)); | |
428 | ||
429 | /* Called as appropriate to notify the interface of the specified breakpoint | |
430 | conditions. */ | |
431 | ||
432 | void (*create_breakpoint_hook) PARAMS ((struct breakpoint *bpt)); | |
433 | void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt)); | |
434 | void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt)); | |
435 | ||
436 | /* Called during long calculations to allow GUI to repair window damage, and to | |
437 | check for stop buttons, etc... */ | |
438 | ||
439 | void (*interactive_hook) PARAMS ((void)); | |
440 | ||
441 | /* Called when the registers have changed, as a hint to a GUI | |
442 | to minimize window update. */ | |
443 | ||
444 | void (*registers_changed_hook) PARAMS ((void)); | |
445 | ||
446 | /* Tell the GUI someone changed the register REGNO. -1 means | |
447 | that the caller does not know which register changed or | |
448 | that several registers have changed (see value_assign).*/ | |
449 | void (*register_changed_hook) PARAMS ((int regno)); | |
450 | ||
451 | /* Tell the GUI someone changed LEN bytes of memory at ADDR */ | |
452 | void (*memory_changed_hook) PARAMS ((CORE_ADDR addr, int len)); | |
453 | ||
454 | /* Called when going to wait for the target. Usually allows the GUI to run | |
455 | while waiting for target events. */ | |
456 | ||
457 | int (*target_wait_hook) PARAMS ((int pid, struct target_waitstatus *status)); | |
458 | ||
459 | /* Used by UI as a wrapper around command execution. May do various things | |
460 | like enabling/disabling buttons, etc... */ | |
461 | ||
462 | void (*call_command_hook) PARAMS ((struct cmd_list_element *c, char *cmd, | |
463 | int from_tty)); | |
464 | ||
465 | /* Called when the current thread changes. Argument is thread id. */ | |
466 | ||
467 | void (*context_hook) PARAMS ((int id)); | |
468 | ||
469 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
470 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
471 | ||
472 | NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN; | |
473 | ||
474 | \f | |
475 | /* Where to go for return_to_top_level (RETURN_ERROR). */ | |
476 | SIGJMP_BUF error_return; | |
477 | /* Where to go for return_to_top_level (RETURN_QUIT). */ | |
478 | SIGJMP_BUF quit_return; | |
479 | ||
480 | /* Return for reason REASON. This generally gets back to the command | |
481 | loop, but can be caught via catch_errors. */ | |
482 | ||
483 | NORETURN void | |
484 | return_to_top_level (reason) | |
485 | enum return_reason reason; | |
486 | { | |
487 | quit_flag = 0; | |
488 | immediate_quit = 0; | |
489 | ||
490 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
491 | I can think of a reason why that is vital, though). */ | |
492 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ | |
493 | ||
494 | disable_current_display (); | |
495 | do_cleanups (ALL_CLEANUPS); | |
496 | ||
497 | if (annotation_level > 1) | |
498 | switch (reason) | |
499 | { | |
500 | case RETURN_QUIT: | |
501 | annotate_quit (); | |
502 | break; | |
503 | case RETURN_ERROR: | |
504 | annotate_error (); | |
505 | break; | |
506 | } | |
507 | ||
508 | (NORETURN void) SIGLONGJMP | |
509 | (reason == RETURN_ERROR ? error_return : quit_return, 1); | |
510 | } | |
511 | ||
512 | /* Call FUNC with arg ARGS, catching any errors. If there is no | |
513 | error, return the value returned by FUNC. If there is an error, | |
514 | print ERRSTRING, print the specific error message, then return | |
515 | zero. | |
516 | ||
517 | Must not be called with immediate_quit in effect (bad things might | |
518 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
519 | This is an OK restriction; with very few exceptions immediate_quit can | |
520 | be replaced by judicious use of QUIT. | |
521 | ||
522 | MASK specifies what to catch; it is normally set to | |
523 | RETURN_MASK_ALL, if for no other reason than that the code which | |
524 | calls catch_errors might not be set up to deal with a quit which | |
525 | isn't caught. But if the code can deal with it, it generally | |
526 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
527 | useful to abort only the portion of the operation inside the | |
528 | catch_errors. Note that quit should return to the command line | |
529 | fairly quickly, even if some further processing is being done. */ | |
530 | ||
531 | int | |
532 | catch_errors (func, args, errstring, mask) | |
533 | catch_errors_ftype *func; | |
534 | PTR args; | |
535 | char *errstring; | |
536 | return_mask mask; | |
537 | { | |
538 | SIGJMP_BUF saved_error; | |
539 | SIGJMP_BUF saved_quit; | |
540 | SIGJMP_BUF tmp_jmp; | |
541 | int val; | |
542 | struct cleanup *saved_cleanup_chain; | |
543 | char *saved_error_pre_print; | |
544 | char *saved_quit_pre_print; | |
545 | ||
546 | saved_cleanup_chain = save_cleanups (); | |
547 | saved_error_pre_print = error_pre_print; | |
548 | saved_quit_pre_print = quit_pre_print; | |
549 | ||
550 | if (mask & RETURN_MASK_ERROR) | |
551 | { | |
552 | memcpy ((char *)saved_error, (char *)error_return, sizeof (SIGJMP_BUF)); | |
553 | error_pre_print = errstring; | |
554 | } | |
555 | if (mask & RETURN_MASK_QUIT) | |
556 | { | |
557 | memcpy (saved_quit, quit_return, sizeof (SIGJMP_BUF)); | |
558 | quit_pre_print = errstring; | |
559 | } | |
560 | ||
561 | if (SIGSETJMP (tmp_jmp) == 0) | |
562 | { | |
563 | if (mask & RETURN_MASK_ERROR) | |
564 | memcpy (error_return, tmp_jmp, sizeof (SIGJMP_BUF)); | |
565 | if (mask & RETURN_MASK_QUIT) | |
566 | memcpy (quit_return, tmp_jmp, sizeof (SIGJMP_BUF)); | |
567 | val = (*func) (args); | |
568 | } | |
569 | else | |
570 | val = 0; | |
571 | ||
572 | restore_cleanups (saved_cleanup_chain); | |
573 | ||
574 | if (mask & RETURN_MASK_ERROR) | |
575 | { | |
576 | memcpy (error_return, saved_error, sizeof (SIGJMP_BUF)); | |
577 | error_pre_print = saved_error_pre_print; | |
578 | } | |
579 | if (mask & RETURN_MASK_QUIT) | |
580 | { | |
581 | memcpy (quit_return, saved_quit, sizeof (SIGJMP_BUF)); | |
582 | quit_pre_print = saved_quit_pre_print; | |
583 | } | |
584 | return val; | |
585 | } | |
586 | ||
587 | /* Handler for SIGHUP. */ | |
588 | ||
589 | #ifdef SIGHUP | |
590 | static void | |
591 | disconnect (signo) | |
592 | int signo; | |
593 | { | |
594 | catch_errors (quit_cover, NULL, | |
595 | "Could not kill the program being debugged", RETURN_MASK_ALL); | |
596 | signal (SIGHUP, SIG_DFL); | |
597 | kill (getpid (), SIGHUP); | |
598 | } | |
599 | ||
600 | /* Just a little helper function for disconnect(). */ | |
601 | ||
cd0fc7c3 SS |
602 | /* NOTE 4/29/99: This function will be static again, once we modify |
603 | gdb to use the event loop as the default command loop and we merge | |
604 | event-top.c into this file, top.c */ | |
605 | /* static */ int | |
c906108c SS |
606 | quit_cover (s) |
607 | PTR s; | |
608 | { | |
609 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
610 | This prevents asking the user dumb questions. */ | |
611 | quit_command((char *)0, 0); | |
612 | return 0; | |
613 | } | |
614 | #endif /* defined SIGHUP */ | |
615 | \f | |
616 | /* Line number we are currently in in a file which is being sourced. */ | |
cd0fc7c3 SS |
617 | /* NOTE 4/29/99: This variable will be static again, once we modify |
618 | gdb to use the event loop as the default command loop and we merge | |
619 | event-top.c into this file, top.c */ | |
620 | /* static */ int source_line_number; | |
c906108c SS |
621 | |
622 | /* Name of the file we are sourcing. */ | |
cd0fc7c3 SS |
623 | /* NOTE 4/29/99: This variable will be static again, once we modify |
624 | gdb to use the event loop as the default command loop and we merge | |
625 | event-top.c into this file, top.c */ | |
626 | /* static */ char *source_file_name; | |
c906108c SS |
627 | |
628 | /* Buffer containing the error_pre_print used by the source stuff. | |
629 | Malloc'd. */ | |
cd0fc7c3 SS |
630 | /* NOTE 4/29/99: This variable will be static again, once we modify |
631 | gdb to use the event loop as the default command loop and we merge | |
632 | event-top.c into this file, top.c */ | |
633 | /* static */ char *source_error; | |
c906108c SS |
634 | static int source_error_allocated; |
635 | ||
636 | /* Something to glom on to the start of error_pre_print if source_file_name | |
637 | is set. */ | |
cd0fc7c3 SS |
638 | /* NOTE 4/29/99: This variable will be static again, once we modify |
639 | gdb to use the event loop as the default command loop and we merge | |
640 | event-top.c into this file, top.c */ | |
641 | /* static */ char *source_pre_error; | |
c906108c SS |
642 | |
643 | /* Clean up on error during a "source" command (or execution of a | |
644 | user-defined command). */ | |
645 | ||
646 | static void | |
647 | source_cleanup (stream) | |
648 | FILE *stream; | |
649 | { | |
650 | /* Restore the previous input stream. */ | |
651 | instream = stream; | |
652 | } | |
653 | ||
654 | /* Read commands from STREAM. */ | |
655 | void | |
656 | read_command_file (stream) | |
657 | FILE *stream; | |
658 | { | |
659 | struct cleanup *cleanups; | |
660 | ||
661 | cleanups = make_cleanup ((make_cleanup_func) source_cleanup, instream); | |
662 | instream = stream; | |
663 | command_loop (); | |
664 | do_cleanups (cleanups); | |
665 | } | |
666 | \f | |
667 | extern void init_proc PARAMS ((void)); | |
668 | ||
669 | void (*pre_init_ui_hook) PARAMS ((void)); | |
670 | ||
671 | void | |
672 | gdb_init (argv0) | |
673 | char *argv0; | |
674 | { | |
675 | if (pre_init_ui_hook) | |
676 | pre_init_ui_hook (); | |
677 | ||
678 | /* Run the init function of each source file */ | |
679 | ||
680 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
681 | current_directory = gdb_dirbuf; | |
682 | ||
683 | init_cmd_lists (); /* This needs to be done first */ | |
684 | initialize_targets (); /* Setup target_terminal macros for utils.c */ | |
685 | initialize_utils (); /* Make errors and warnings possible */ | |
686 | initialize_all_files (); | |
687 | init_main (); /* But that omits this file! Do it now */ | |
cd0fc7c3 SS |
688 | |
689 | /* The signal handling mechanism is different depending whether or | |
690 | not the async version is run. NOTE: in the future we plan to make | |
691 | the event loop be the default engine of gdb, and this difference | |
692 | will disappear. */ | |
693 | if (async_hook) | |
694 | async_init_signals (); | |
695 | else | |
696 | init_signals (); | |
c906108c SS |
697 | |
698 | init_proc (); | |
699 | ||
700 | /* We need a default language for parsing expressions, so simple things like | |
701 | "set width 0" won't fail if no language is explicitly set in a config file | |
702 | or implicitly set by reading an executable during startup. */ | |
703 | set_language (language_c); | |
704 | expected_language = current_language; /* don't warn about the change. */ | |
705 | ||
706 | if (init_ui_hook) | |
707 | init_ui_hook (argv0); | |
708 | } | |
709 | ||
710 | /* Allocate, initialize a new command line structure for one of the | |
711 | control commands (if/while). */ | |
712 | ||
713 | static struct command_line * | |
714 | build_command_line (type, args) | |
715 | enum command_control_type type; | |
716 | char *args; | |
717 | { | |
718 | struct command_line *cmd; | |
719 | ||
720 | if (args == NULL) | |
721 | error ("if/while commands require arguments.\n"); | |
722 | ||
723 | cmd = (struct command_line *)xmalloc (sizeof (struct command_line)); | |
724 | cmd->next = NULL; | |
725 | cmd->control_type = type; | |
726 | ||
727 | cmd->body_count = 1; | |
728 | cmd->body_list | |
729 | = (struct command_line **)xmalloc (sizeof (struct command_line *) | |
730 | * cmd->body_count); | |
731 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); | |
732 | cmd->line = savestring (args, strlen (args)); | |
733 | return cmd; | |
734 | } | |
735 | ||
736 | /* Build and return a new command structure for the control commands | |
737 | such as "if" and "while". */ | |
738 | ||
739 | static struct command_line * | |
740 | get_command_line (type, arg) | |
741 | enum command_control_type type; | |
742 | char *arg; | |
743 | { | |
744 | struct command_line *cmd; | |
745 | struct cleanup *old_chain = NULL; | |
746 | ||
747 | /* Allocate and build a new command line structure. */ | |
748 | cmd = build_command_line (type, arg); | |
749 | ||
750 | old_chain = make_cleanup ((make_cleanup_func) free_command_lines, &cmd); | |
751 | ||
752 | /* Read in the body of this command. */ | |
753 | if (recurse_read_control_structure (cmd) == invalid_control) | |
754 | { | |
755 | warning ("error reading in control structure\n"); | |
756 | do_cleanups (old_chain); | |
757 | return NULL; | |
758 | } | |
759 | ||
760 | discard_cleanups (old_chain); | |
761 | return cmd; | |
762 | } | |
763 | ||
764 | /* Recursively print a command (including full control structures). */ | |
765 | void | |
766 | print_command_line (cmd, depth) | |
767 | struct command_line *cmd; | |
768 | unsigned int depth; | |
769 | { | |
770 | unsigned int i; | |
771 | ||
772 | if (depth) | |
773 | { | |
774 | for (i = 0; i < depth; i++) | |
775 | fputs_filtered (" ", gdb_stdout); | |
776 | } | |
777 | ||
778 | /* A simple command, print it and return. */ | |
779 | if (cmd->control_type == simple_control) | |
780 | { | |
781 | fputs_filtered (cmd->line, gdb_stdout); | |
782 | fputs_filtered ("\n", gdb_stdout); | |
783 | return; | |
784 | } | |
785 | ||
786 | /* loop_continue to jump to the start of a while loop, print it | |
787 | and return. */ | |
788 | if (cmd->control_type == continue_control) | |
789 | { | |
790 | fputs_filtered ("loop_continue\n", gdb_stdout); | |
791 | return; | |
792 | } | |
793 | ||
794 | /* loop_break to break out of a while loop, print it and return. */ | |
795 | if (cmd->control_type == break_control) | |
796 | { | |
797 | fputs_filtered ("loop_break\n", gdb_stdout); | |
798 | return; | |
799 | } | |
800 | ||
801 | /* A while command. Recursively print its subcommands before returning. */ | |
802 | if (cmd->control_type == while_control) | |
803 | { | |
804 | struct command_line *list; | |
805 | fputs_filtered ("while ", gdb_stdout); | |
806 | fputs_filtered (cmd->line, gdb_stdout); | |
807 | fputs_filtered ("\n", gdb_stdout); | |
808 | list = *cmd->body_list; | |
809 | while (list) | |
810 | { | |
811 | print_command_line (list, depth + 1); | |
812 | list = list->next; | |
813 | } | |
814 | } | |
815 | ||
816 | /* An if command. Recursively print both arms before returning. */ | |
817 | if (cmd->control_type == if_control) | |
818 | { | |
819 | fputs_filtered ("if ", gdb_stdout); | |
820 | fputs_filtered (cmd->line, gdb_stdout); | |
821 | fputs_filtered ("\n", gdb_stdout); | |
822 | /* The true arm. */ | |
823 | print_command_line (cmd->body_list[0], depth + 1); | |
824 | ||
825 | /* Show the false arm if it exists. */ | |
826 | if (cmd->body_count == 2) | |
827 | { | |
828 | if (depth) | |
829 | { | |
830 | for (i = 0; i < depth; i++) | |
831 | fputs_filtered (" ", gdb_stdout); | |
832 | } | |
833 | fputs_filtered ("else\n", gdb_stdout); | |
834 | print_command_line (cmd->body_list[1], depth + 1); | |
835 | } | |
836 | if (depth) | |
837 | { | |
838 | for (i = 0; i < depth; i++) | |
839 | fputs_filtered (" ", gdb_stdout); | |
840 | } | |
841 | fputs_filtered ("end\n", gdb_stdout); | |
842 | } | |
843 | } | |
844 | ||
845 | /* Execute the command in CMD. */ | |
846 | ||
847 | enum command_control_type | |
848 | execute_control_command (cmd) | |
849 | struct command_line *cmd; | |
850 | { | |
851 | struct expression *expr; | |
852 | struct command_line *current; | |
853 | struct cleanup *old_chain = 0; | |
854 | value_ptr val; | |
855 | value_ptr val_mark; | |
856 | int loop; | |
857 | enum command_control_type ret; | |
858 | char *new_line; | |
859 | ||
860 | switch (cmd->control_type) | |
861 | { | |
862 | case simple_control: | |
863 | /* A simple command, execute it and return. */ | |
864 | new_line = insert_args (cmd->line); | |
865 | if (!new_line) | |
866 | return invalid_control; | |
867 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, | |
868 | &new_line); | |
869 | execute_command (new_line, 0); | |
870 | ret = cmd->control_type; | |
871 | break; | |
872 | ||
873 | case continue_control: | |
874 | case break_control: | |
875 | /* Return for "continue", and "break" so we can either | |
876 | continue the loop at the top, or break out. */ | |
877 | ret = cmd->control_type; | |
878 | break; | |
879 | ||
880 | case while_control: | |
881 | { | |
882 | /* Parse the loop control expression for the while statement. */ | |
883 | new_line = insert_args (cmd->line); | |
884 | if (!new_line) | |
885 | return invalid_control; | |
886 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, | |
887 | &new_line); | |
888 | expr = parse_expression (new_line); | |
889 | make_cleanup ((make_cleanup_func) free_current_contents, &expr); | |
890 | ||
891 | ret = simple_control; | |
892 | loop = 1; | |
893 | ||
894 | /* Keep iterating so long as the expression is true. */ | |
895 | while (loop == 1) | |
896 | { | |
897 | int cond_result; | |
898 | ||
899 | QUIT; | |
900 | ||
901 | /* Evaluate the expression. */ | |
902 | val_mark = value_mark (); | |
903 | val = evaluate_expression (expr); | |
904 | cond_result = value_true (val); | |
905 | value_free_to_mark (val_mark); | |
906 | ||
907 | /* If the value is false, then break out of the loop. */ | |
908 | if (!cond_result) | |
909 | break; | |
910 | ||
911 | /* Execute the body of the while statement. */ | |
912 | current = *cmd->body_list; | |
913 | while (current) | |
914 | { | |
915 | ret = execute_control_command (current); | |
916 | ||
917 | /* If we got an error, or a "break" command, then stop | |
918 | looping. */ | |
919 | if (ret == invalid_control || ret == break_control) | |
920 | { | |
921 | loop = 0; | |
922 | break; | |
923 | } | |
924 | ||
925 | /* If we got a "continue" command, then restart the loop | |
926 | at this point. */ | |
927 | if (ret == continue_control) | |
928 | break; | |
929 | ||
930 | /* Get the next statement. */ | |
931 | current = current->next; | |
932 | } | |
933 | } | |
934 | ||
935 | /* Reset RET so that we don't recurse the break all the way down. */ | |
936 | if (ret == break_control) | |
937 | ret = simple_control; | |
938 | ||
939 | break; | |
940 | } | |
941 | ||
942 | case if_control: | |
943 | { | |
944 | new_line = insert_args (cmd->line); | |
945 | if (!new_line) | |
946 | return invalid_control; | |
947 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, | |
948 | &new_line); | |
949 | /* Parse the conditional for the if statement. */ | |
950 | expr = parse_expression (new_line); | |
951 | make_cleanup ((make_cleanup_func) free_current_contents, &expr); | |
952 | ||
953 | current = NULL; | |
954 | ret = simple_control; | |
955 | ||
956 | /* Evaluate the conditional. */ | |
957 | val_mark = value_mark (); | |
958 | val = evaluate_expression (expr); | |
959 | ||
960 | /* Choose which arm to take commands from based on the value of the | |
961 | conditional expression. */ | |
962 | if (value_true (val)) | |
963 | current = *cmd->body_list; | |
964 | else if (cmd->body_count == 2) | |
965 | current = *(cmd->body_list + 1); | |
966 | value_free_to_mark (val_mark); | |
967 | ||
968 | /* Execute commands in the given arm. */ | |
969 | while (current) | |
970 | { | |
971 | ret = execute_control_command (current); | |
972 | ||
973 | /* If we got an error, get out. */ | |
974 | if (ret != simple_control) | |
975 | break; | |
976 | ||
977 | /* Get the next statement in the body. */ | |
978 | current = current->next; | |
979 | } | |
980 | ||
981 | break; | |
982 | } | |
983 | ||
984 | default: | |
985 | warning ("Invalid control type in command structure."); | |
986 | return invalid_control; | |
987 | } | |
988 | ||
989 | if (old_chain) | |
990 | do_cleanups (old_chain); | |
991 | ||
992 | return ret; | |
993 | } | |
994 | ||
995 | /* "while" command support. Executes a body of statements while the | |
996 | loop condition is nonzero. */ | |
997 | ||
998 | static void | |
999 | while_command (arg, from_tty) | |
1000 | char *arg; | |
1001 | int from_tty; | |
1002 | { | |
1003 | struct command_line *command = NULL; | |
1004 | ||
1005 | control_level = 1; | |
1006 | command = get_command_line (while_control, arg); | |
1007 | ||
1008 | if (command == NULL) | |
1009 | return; | |
1010 | ||
1011 | execute_control_command (command); | |
1012 | free_command_lines (&command); | |
1013 | } | |
1014 | ||
1015 | /* "if" command support. Execute either the true or false arm depending | |
1016 | on the value of the if conditional. */ | |
1017 | ||
1018 | static void | |
1019 | if_command (arg, from_tty) | |
1020 | char *arg; | |
1021 | int from_tty; | |
1022 | { | |
1023 | struct command_line *command = NULL; | |
1024 | ||
1025 | control_level = 1; | |
1026 | command = get_command_line (if_control, arg); | |
1027 | ||
1028 | if (command == NULL) | |
1029 | return; | |
1030 | ||
1031 | execute_control_command (command); | |
1032 | free_command_lines (&command); | |
1033 | } | |
1034 | ||
1035 | /* Cleanup */ | |
1036 | static void | |
1037 | arg_cleanup () | |
1038 | { | |
1039 | struct user_args *oargs = user_args; | |
1040 | if (!user_args) | |
1041 | fatal ("Internal error, arg_cleanup called with no user args.\n"); | |
1042 | ||
1043 | user_args = user_args->next; | |
1044 | free (oargs); | |
1045 | } | |
1046 | ||
1047 | /* Bind the incomming arguments for a user defined command to | |
1048 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
1049 | ||
1050 | static struct cleanup * | |
1051 | setup_user_args (p) | |
1052 | char *p; | |
1053 | { | |
1054 | struct user_args *args; | |
1055 | struct cleanup *old_chain; | |
1056 | unsigned int arg_count = 0; | |
1057 | ||
1058 | args = (struct user_args *)xmalloc (sizeof (struct user_args)); | |
1059 | memset (args, 0, sizeof (struct user_args)); | |
1060 | ||
1061 | args->next = user_args; | |
1062 | user_args = args; | |
1063 | ||
1064 | old_chain = make_cleanup ((make_cleanup_func) arg_cleanup, 0); | |
1065 | ||
1066 | if (p == NULL) | |
1067 | return old_chain; | |
1068 | ||
1069 | while (*p) | |
1070 | { | |
1071 | char *start_arg; | |
1072 | int squote = 0; | |
1073 | int dquote = 0; | |
1074 | int bsquote = 0; | |
1075 | ||
1076 | if (arg_count >= MAXUSERARGS) | |
1077 | { | |
1078 | error ("user defined function may only have %d arguments.\n", | |
1079 | MAXUSERARGS); | |
1080 | return old_chain; | |
1081 | } | |
1082 | ||
1083 | /* Strip whitespace. */ | |
1084 | while (*p == ' ' || *p == '\t') | |
1085 | p++; | |
1086 | ||
1087 | /* P now points to an argument. */ | |
1088 | start_arg = p; | |
1089 | user_args->a[arg_count].arg = p; | |
1090 | ||
1091 | /* Get to the end of this argument. */ | |
1092 | while (*p) | |
1093 | { | |
1094 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
1095 | break; | |
1096 | else | |
1097 | { | |
1098 | if (bsquote) | |
1099 | bsquote = 0; | |
1100 | else if (*p == '\\') | |
1101 | bsquote = 1; | |
1102 | else if (squote) | |
1103 | { | |
1104 | if (*p == '\'') | |
1105 | squote = 0; | |
1106 | } | |
1107 | else if (dquote) | |
1108 | { | |
1109 | if (*p == '"') | |
1110 | dquote = 0; | |
1111 | } | |
1112 | else | |
1113 | { | |
1114 | if (*p == '\'') | |
1115 | squote = 1; | |
1116 | else if (*p == '"') | |
1117 | dquote = 1; | |
1118 | } | |
1119 | p++; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | user_args->a[arg_count].len = p - start_arg; | |
1124 | arg_count++; | |
1125 | user_args->count++; | |
1126 | } | |
1127 | return old_chain; | |
1128 | } | |
1129 | ||
1130 | /* Given character string P, return a point to the first argument ($arg), | |
1131 | or NULL if P contains no arguments. */ | |
1132 | ||
1133 | static char * | |
1134 | locate_arg (p) | |
1135 | char *p; | |
1136 | { | |
1137 | while ((p = strchr (p, '$'))) | |
1138 | { | |
1139 | if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4])) | |
1140 | return p; | |
1141 | p++; | |
1142 | } | |
1143 | return NULL; | |
1144 | } | |
1145 | ||
1146 | /* Insert the user defined arguments stored in user_arg into the $arg | |
1147 | arguments found in line, with the updated copy being placed into nline. */ | |
1148 | ||
1149 | static char * | |
1150 | insert_args (line) | |
1151 | char *line; | |
1152 | { | |
1153 | char *p, *save_line, *new_line; | |
1154 | unsigned len, i; | |
1155 | ||
1156 | /* First we need to know how much memory to allocate for the new line. */ | |
1157 | save_line = line; | |
1158 | len = 0; | |
1159 | while ((p = locate_arg (line))) | |
1160 | { | |
1161 | len += p - line; | |
1162 | i = p[4] - '0'; | |
1163 | ||
1164 | if (i >= user_args->count) | |
1165 | { | |
1166 | error ("Missing argument %d in user function.\n", i); | |
1167 | return NULL; | |
1168 | } | |
1169 | len += user_args->a[i].len; | |
1170 | line = p + 5; | |
1171 | } | |
1172 | ||
1173 | /* Don't forget the tail. */ | |
1174 | len += strlen (line); | |
1175 | ||
1176 | /* Allocate space for the new line and fill it in. */ | |
1177 | new_line = (char *)xmalloc (len + 1); | |
1178 | if (new_line == NULL) | |
1179 | return NULL; | |
1180 | ||
1181 | /* Restore pointer to beginning of old line. */ | |
1182 | line = save_line; | |
1183 | ||
1184 | /* Save pointer to beginning of new line. */ | |
1185 | save_line = new_line; | |
1186 | ||
1187 | while ((p = locate_arg (line))) | |
1188 | { | |
1189 | int i, len; | |
1190 | ||
1191 | memcpy (new_line, line, p - line); | |
1192 | new_line += p - line; | |
1193 | i = p[4] - '0'; | |
1194 | ||
1195 | len = user_args->a[i].len; | |
1196 | if (len) | |
1197 | { | |
1198 | memcpy (new_line, user_args->a[i].arg, len); | |
1199 | new_line += len; | |
1200 | } | |
1201 | line = p + 5; | |
1202 | } | |
1203 | /* Don't forget the tail. */ | |
1204 | strcpy (new_line, line); | |
1205 | ||
1206 | /* Return a pointer to the beginning of the new line. */ | |
1207 | return save_line; | |
1208 | } | |
1209 | ||
1210 | void | |
1211 | execute_user_command (c, args) | |
1212 | struct cmd_list_element *c; | |
1213 | char *args; | |
1214 | { | |
1215 | register struct command_line *cmdlines; | |
1216 | struct cleanup *old_chain; | |
1217 | enum command_control_type ret; | |
1218 | ||
1219 | old_chain = setup_user_args (args); | |
1220 | ||
1221 | cmdlines = c->user_commands; | |
1222 | if (cmdlines == 0) | |
1223 | /* Null command */ | |
1224 | return; | |
1225 | ||
1226 | /* Set the instream to 0, indicating execution of a | |
1227 | user-defined function. */ | |
1228 | old_chain = make_cleanup ((make_cleanup_func) source_cleanup, instream); | |
1229 | instream = (FILE *) 0; | |
1230 | while (cmdlines) | |
1231 | { | |
1232 | ret = execute_control_command (cmdlines); | |
1233 | if (ret != simple_control && ret != break_control) | |
1234 | { | |
1235 | warning ("Error in control structure.\n"); | |
1236 | break; | |
1237 | } | |
1238 | cmdlines = cmdlines->next; | |
1239 | } | |
1240 | do_cleanups (old_chain); | |
1241 | } | |
1242 | ||
1243 | /* Execute the line P as a command. | |
1244 | Pass FROM_TTY as second argument to the defining function. */ | |
1245 | ||
1246 | void | |
1247 | execute_command (p, from_tty) | |
1248 | char *p; | |
1249 | int from_tty; | |
1250 | { | |
1251 | register struct cmd_list_element *c; | |
1252 | register enum language flang; | |
1253 | static int warned = 0; | |
1254 | /* FIXME: These should really be in an appropriate header file */ | |
1255 | extern void serial_log_command PARAMS ((const char *)); | |
1256 | ||
1257 | free_all_values (); | |
1258 | ||
1259 | /* Force cleanup of any alloca areas if using C alloca instead of | |
1260 | a builtin alloca. */ | |
1261 | alloca (0); | |
1262 | ||
1263 | /* This can happen when command_line_input hits end of file. */ | |
1264 | if (p == NULL) | |
1265 | return; | |
1266 | ||
1267 | serial_log_command (p); | |
1268 | ||
1269 | while (*p == ' ' || *p == '\t') p++; | |
1270 | if (*p) | |
1271 | { | |
1272 | char *arg; | |
1273 | ||
1274 | c = lookup_cmd (&p, cmdlist, "", 0, 1); | |
1275 | /* Pass null arg rather than an empty one. */ | |
1276 | arg = *p ? p : 0; | |
1277 | ||
1278 | /* Clear off trailing whitespace, except for set and complete command. */ | |
1279 | if (arg && c->type != set_cmd && c->function.cfunc != complete_command) | |
1280 | { | |
1281 | p = arg + strlen (arg) - 1; | |
1282 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
1283 | p--; | |
1284 | *(p + 1) = '\0'; | |
1285 | } | |
1286 | ||
1287 | /* If this command has been hooked, run the hook first. */ | |
1288 | if (c->hook) | |
1289 | execute_user_command (c->hook, (char *)0); | |
1290 | ||
1291 | if (c->class == class_user) | |
1292 | execute_user_command (c, arg); | |
1293 | else if (c->type == set_cmd || c->type == show_cmd) | |
1294 | do_setshow_command (arg, from_tty & caution, c); | |
1295 | else if (c->function.cfunc == NO_FUNCTION) | |
1296 | error ("That is not a command, just a help topic."); | |
1297 | else if (call_command_hook) | |
1298 | call_command_hook (c, arg, from_tty & caution); | |
1299 | else | |
1300 | (*c->function.cfunc) (arg, from_tty & caution); | |
1301 | } | |
1302 | ||
1303 | /* Tell the user if the language has changed (except first time). */ | |
1304 | if (current_language != expected_language) | |
1305 | { | |
1306 | if (language_mode == language_mode_auto) { | |
1307 | language_info (1); /* Print what changed. */ | |
1308 | } | |
1309 | warned = 0; | |
1310 | } | |
1311 | ||
1312 | /* Warn the user if the working language does not match the | |
1313 | language of the current frame. Only warn the user if we are | |
1314 | actually running the program, i.e. there is a stack. */ | |
1315 | /* FIXME: This should be cacheing the frame and only running when | |
1316 | the frame changes. */ | |
1317 | ||
1318 | if (target_has_stack) | |
1319 | { | |
1320 | flang = get_frame_language (); | |
1321 | if (!warned | |
1322 | && flang != language_unknown | |
1323 | && flang != current_language->la_language) | |
1324 | { | |
1325 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1326 | warned = 1; | |
1327 | } | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | /* ARGSUSED */ | |
cd0fc7c3 SS |
1332 | /* NOTE 4/29/99: This function will be static again, once we modify |
1333 | gdb to use the event loop as the default command loop and we merge | |
1334 | event-top.c into this file, top.c */ | |
1335 | /* static */ void | |
c906108c SS |
1336 | command_loop_marker (foo) |
1337 | int foo; | |
1338 | { | |
1339 | } | |
1340 | ||
1341 | /* Read commands from `instream' and execute them | |
1342 | until end of file or error reading instream. */ | |
1343 | ||
1344 | void | |
1345 | command_loop () | |
1346 | { | |
1347 | struct cleanup *old_chain; | |
1348 | char *command; | |
1349 | int stdin_is_tty = ISATTY (stdin); | |
1350 | long time_at_cmd_start; | |
1351 | #ifdef HAVE_SBRK | |
1352 | long space_at_cmd_start = 0; | |
1353 | #endif | |
1354 | extern int display_time; | |
1355 | extern int display_space; | |
1356 | ||
1357 | while (instream && !feof (instream)) | |
1358 | { | |
1359 | #if defined(TUI) | |
1360 | extern int insert_mode; | |
1361 | #endif | |
1362 | if (window_hook && instream == stdin) | |
1363 | (*window_hook) (instream, prompt); | |
1364 | ||
1365 | quit_flag = 0; | |
1366 | if (instream == stdin && stdin_is_tty) | |
1367 | reinitialize_more_filter (); | |
1368 | old_chain = make_cleanup ((make_cleanup_func) command_loop_marker, 0); | |
1369 | ||
1370 | #if defined(TUI) | |
1371 | /* A bit of paranoia: I want to make sure the "insert_mode" global | |
1372 | * is clear except when it is being used for command-line editing | |
1373 | * (see tuiIO.c, utils.c); otherwise normal output will | |
1374 | * get messed up in the TUI. So clear it before/after | |
1375 | * the command-line-input call. - RT | |
1376 | */ | |
1377 | insert_mode = 0; | |
1378 | #endif | |
1379 | /* Get a command-line. This calls the readline package. */ | |
1380 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, | |
1381 | instream == stdin, "prompt"); | |
1382 | #if defined(TUI) | |
1383 | insert_mode = 0; | |
1384 | #endif | |
1385 | if (command == 0) | |
1386 | return; | |
1387 | ||
1388 | time_at_cmd_start = get_run_time (); | |
1389 | ||
1390 | if (display_space) | |
1391 | { | |
1392 | #ifdef HAVE_SBRK | |
1393 | extern char **environ; | |
1394 | char *lim = (char *) sbrk (0); | |
1395 | ||
1396 | space_at_cmd_start = (long) (lim - (char *) &environ); | |
1397 | #endif | |
1398 | } | |
1399 | ||
1400 | execute_command (command, instream == stdin); | |
1401 | /* Do any commands attached to breakpoint we stopped at. */ | |
1402 | bpstat_do_actions (&stop_bpstat); | |
1403 | do_cleanups (old_chain); | |
1404 | ||
1405 | if (display_time) | |
1406 | { | |
1407 | long cmd_time = get_run_time () - time_at_cmd_start; | |
1408 | ||
1409 | printf_unfiltered ("Command execution time: %ld.%06ld\n", | |
1410 | cmd_time / 1000000, cmd_time % 1000000); | |
1411 | } | |
1412 | ||
1413 | if (display_space) | |
1414 | { | |
1415 | #ifdef HAVE_SBRK | |
1416 | extern char **environ; | |
1417 | char *lim = (char *) sbrk (0); | |
1418 | long space_now = lim - (char *) &environ; | |
1419 | long space_diff = space_now - space_at_cmd_start; | |
1420 | ||
1421 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", | |
1422 | space_now, | |
1423 | (space_diff >= 0 ? '+' : '-'), | |
1424 | space_diff); | |
1425 | #endif | |
1426 | } | |
1427 | } | |
1428 | } | |
1429 | \f | |
1430 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1431 | ||
1432 | void | |
1433 | dont_repeat () | |
1434 | { | |
1435 | if (server_command) | |
1436 | return; | |
1437 | ||
1438 | /* If we aren't reading from standard input, we are saving the last | |
1439 | thing read from stdin in line and don't want to delete it. Null lines | |
1440 | won't repeat here in any case. */ | |
1441 | if (instream == stdin) | |
1442 | *line = 0; | |
1443 | } | |
1444 | \f | |
1445 | /* Read a line from the stream "instream" without command line editing. | |
1446 | ||
1447 | It prints PRROMPT once at the start. | |
1448 | Action is compatible with "readline", e.g. space for the result is | |
1449 | malloc'd and should be freed by the caller. | |
1450 | ||
1451 | A NULL return means end of file. */ | |
1452 | char * | |
1453 | gdb_readline (prrompt) | |
1454 | char *prrompt; | |
1455 | { | |
1456 | int c; | |
1457 | char *result; | |
1458 | int input_index = 0; | |
1459 | int result_size = 80; | |
1460 | ||
1461 | if (prrompt) | |
1462 | { | |
1463 | /* Don't use a _filtered function here. It causes the assumed | |
1464 | character position to be off, since the newline we read from | |
1465 | the user is not accounted for. */ | |
1466 | fputs_unfiltered (prrompt, gdb_stdout); | |
1467 | #ifdef MPW | |
1468 | /* Move to a new line so the entered line doesn't have a prompt | |
1469 | on the front of it. */ | |
1470 | fputs_unfiltered ("\n", gdb_stdout); | |
1471 | #endif /* MPW */ | |
1472 | gdb_flush (gdb_stdout); | |
1473 | } | |
1474 | ||
1475 | result = (char *) xmalloc (result_size); | |
1476 | ||
1477 | while (1) | |
1478 | { | |
1479 | /* Read from stdin if we are executing a user defined command. | |
1480 | This is the right thing for prompt_for_continue, at least. */ | |
1481 | c = fgetc (instream ? instream : stdin); | |
1482 | ||
1483 | if (c == EOF) | |
1484 | { | |
1485 | if (input_index > 0) | |
1486 | /* The last line does not end with a newline. Return it, and | |
1487 | if we are called again fgetc will still return EOF and | |
1488 | we'll return NULL then. */ | |
1489 | break; | |
1490 | free (result); | |
1491 | return NULL; | |
1492 | } | |
1493 | ||
1494 | if (c == '\n') | |
1495 | #ifndef CRLF_SOURCE_FILES | |
1496 | break; | |
1497 | #else | |
1498 | { | |
1499 | if (input_index > 0 && result[input_index - 1] == '\r') | |
1500 | input_index--; | |
1501 | break; | |
1502 | } | |
1503 | #endif | |
1504 | ||
1505 | result[input_index++] = c; | |
1506 | while (input_index >= result_size) | |
1507 | { | |
1508 | result_size *= 2; | |
1509 | result = (char *) xrealloc (result, result_size); | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | result[input_index++] = '\0'; | |
1514 | return result; | |
1515 | } | |
1516 | ||
1517 | /* Variables which control command line editing and history | |
1518 | substitution. These variables are given default values at the end | |
1519 | of this file. */ | |
1520 | static int command_editing_p; | |
cd0fc7c3 SS |
1521 | /* NOTE 4/29/99: This variable will be static again, once we modify |
1522 | gdb to use the event loop as the default command loop and we merge | |
1523 | event-top.c into this file, top.c */ | |
1524 | /* static */ int history_expansion_p; | |
c906108c SS |
1525 | static int write_history_p; |
1526 | static int history_size; | |
1527 | static char *history_filename; | |
1528 | ||
1529 | /* readline uses the word breaks for two things: | |
1530 | (1) In figuring out where to point the TEXT parameter to the | |
1531 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1532 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1533 | it does affect how much stuff M-? lists. | |
1534 | (2) If one of the matches contains a word break character, readline | |
1535 | will quote it. That's why we switch between | |
1536 | gdb_completer_word_break_characters and | |
1537 | gdb_completer_command_word_break_characters. I'm not sure when | |
1538 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1539 | ||
1540 | /* Variables which are necessary for fancy command line editing. */ | |
1541 | char *gdb_completer_word_break_characters = | |
1542 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; | |
1543 | ||
1544 | /* When completing on command names, we remove '-' from the list of | |
1545 | word break characters, since we use it in command names. If the | |
1546 | readline library sees one in any of the current completion strings, | |
1547 | it thinks that the string needs to be quoted and automatically supplies | |
1548 | a leading quote. */ | |
1549 | char *gdb_completer_command_word_break_characters = | |
1550 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1551 | ||
1552 | /* Characters that can be used to quote completion strings. Note that we | |
1553 | can't include '"' because the gdb C parser treats such quoted sequences | |
1554 | as strings. */ | |
1555 | char *gdb_completer_quote_characters = | |
1556 | "'"; | |
1557 | ||
1558 | /* Functions that are used as part of the fancy command line editing. */ | |
1559 | ||
1560 | /* This can be used for functions which don't want to complete on symbols | |
1561 | but don't want to complete on anything else either. */ | |
1562 | /* ARGSUSED */ | |
1563 | char ** | |
1564 | noop_completer (text, prefix) | |
1565 | char *text; | |
1566 | char *prefix; | |
1567 | { | |
1568 | return NULL; | |
1569 | } | |
1570 | ||
1571 | /* Complete on filenames. */ | |
1572 | char ** | |
1573 | filename_completer (text, word) | |
1574 | char *text; | |
1575 | char *word; | |
1576 | { | |
1577 | /* From readline. */ | |
1578 | extern char *filename_completion_function PARAMS ((char *, int)); | |
1579 | int subsequent_name; | |
1580 | char **return_val; | |
1581 | int return_val_used; | |
1582 | int return_val_alloced; | |
1583 | ||
1584 | return_val_used = 0; | |
1585 | /* Small for testing. */ | |
1586 | return_val_alloced = 1; | |
1587 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1588 | ||
1589 | subsequent_name = 0; | |
1590 | while (1) | |
1591 | { | |
1592 | char *p; | |
1593 | p = filename_completion_function (text, subsequent_name); | |
1594 | if (return_val_used >= return_val_alloced) | |
1595 | { | |
1596 | return_val_alloced *= 2; | |
1597 | return_val = | |
1598 | (char **) xrealloc (return_val, | |
1599 | return_val_alloced * sizeof (char *)); | |
1600 | } | |
1601 | if (p == NULL) | |
1602 | { | |
1603 | return_val[return_val_used++] = p; | |
1604 | break; | |
1605 | } | |
1606 | /* Like emacs, don't complete on old versions. Especially useful | |
1607 | in the "source" command. */ | |
1608 | if (p[strlen (p) - 1] == '~') | |
1609 | continue; | |
1610 | ||
1611 | { | |
1612 | char *q; | |
1613 | if (word == text) | |
1614 | /* Return exactly p. */ | |
1615 | return_val[return_val_used++] = p; | |
1616 | else if (word > text) | |
1617 | { | |
1618 | /* Return some portion of p. */ | |
1619 | q = xmalloc (strlen (p) + 5); | |
1620 | strcpy (q, p + (word - text)); | |
1621 | return_val[return_val_used++] = q; | |
1622 | free (p); | |
1623 | } | |
1624 | else | |
1625 | { | |
1626 | /* Return some of TEXT plus p. */ | |
1627 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1628 | strncpy (q, word, text - word); | |
1629 | q[text - word] = '\0'; | |
1630 | strcat (q, p); | |
1631 | return_val[return_val_used++] = q; | |
1632 | free (p); | |
1633 | } | |
1634 | } | |
1635 | subsequent_name = 1; | |
1636 | } | |
1637 | #if 0 | |
1638 | /* There is no way to do this just long enough to affect quote inserting | |
1639 | without also affecting the next completion. This should be fixed in | |
1640 | readline. FIXME. */ | |
1641 | /* Insure that readline does the right thing | |
1642 | with respect to inserting quotes. */ | |
1643 | rl_completer_word_break_characters = ""; | |
1644 | #endif | |
1645 | return return_val; | |
1646 | } | |
1647 | ||
1648 | /* Here are some useful test cases for completion. FIXME: These should | |
1649 | be put in the test suite. They should be tested with both M-? and TAB. | |
1650 | ||
1651 | "show output-" "radix" | |
1652 | "show output" "-radix" | |
1653 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1654 | "p " ambiguous (all symbols) | |
1655 | "info t foo" no completions | |
1656 | "info t " no completions | |
1657 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1658 | "info ajksdlfk" no completions | |
1659 | "info ajksdlfk " no completions | |
1660 | "info" " " | |
1661 | "info " ambiguous (all info commands) | |
1662 | "p \"a" no completions (string constant) | |
1663 | "p 'a" ambiguous (all symbols starting with a) | |
1664 | "p b-a" ambiguous (all symbols starting with a) | |
1665 | "p b-" ambiguous (all symbols) | |
1666 | "file Make" "file" (word break hard to screw up here) | |
1667 | "file ../gdb.stabs/we" "ird" (needs to not break word at slash) | |
1668 | */ | |
1669 | ||
1670 | /* Generate completions one by one for the completer. Each time we are | |
1671 | called return another potential completion to the caller. | |
1672 | line_completion just completes on commands or passes the buck to the | |
1673 | command's completer function, the stuff specific to symbol completion | |
1674 | is in make_symbol_completion_list. | |
1675 | ||
1676 | TEXT is the caller's idea of the "word" we are looking at. | |
1677 | ||
1678 | MATCHES is the number of matches that have currently been collected from | |
1679 | calling this completion function. When zero, then we need to initialize, | |
1680 | otherwise the initialization has already taken place and we can just | |
1681 | return the next potential completion string. | |
1682 | ||
1683 | LINE_BUFFER is available to be looked at; it contains the entire text | |
1684 | of the line. POINT is the offset in that line of the cursor. You | |
1685 | should pretend that the line ends at POINT. | |
1686 | ||
1687 | Returns NULL if there are no more completions, else a pointer to a string | |
1688 | which is a possible completion, it is the caller's responsibility to | |
1689 | free the string. */ | |
1690 | ||
1691 | static char * | |
1692 | line_completion_function (text, matches, line_buffer, point) | |
1693 | char *text; | |
1694 | int matches; | |
1695 | char *line_buffer; | |
1696 | int point; | |
1697 | { | |
1698 | static char **list = (char **)NULL; /* Cache of completions */ | |
1699 | static int index; /* Next cached completion */ | |
1700 | char *output = NULL; | |
1701 | char *tmp_command, *p; | |
1702 | /* Pointer within tmp_command which corresponds to text. */ | |
1703 | char *word; | |
1704 | struct cmd_list_element *c, *result_list; | |
1705 | ||
1706 | if (matches == 0) | |
1707 | { | |
1708 | /* The caller is beginning to accumulate a new set of completions, so | |
1709 | we need to find all of them now, and cache them for returning one at | |
1710 | a time on future calls. */ | |
1711 | ||
1712 | if (list) | |
1713 | { | |
1714 | /* Free the storage used by LIST, but not by the strings inside. | |
1715 | This is because rl_complete_internal () frees the strings. */ | |
1716 | free ((PTR)list); | |
1717 | } | |
1718 | list = 0; | |
1719 | index = 0; | |
1720 | ||
1721 | /* Choose the default set of word break characters to break completions. | |
1722 | If we later find out that we are doing completions on command strings | |
1723 | (as opposed to strings supplied by the individual command completer | |
1724 | functions, which can be any string) then we will switch to the | |
1725 | special word break set for command strings, which leaves out the | |
1726 | '-' character used in some commands. */ | |
1727 | ||
1728 | rl_completer_word_break_characters = | |
1729 | gdb_completer_word_break_characters; | |
1730 | ||
1731 | /* Decide whether to complete on a list of gdb commands or on symbols. */ | |
1732 | tmp_command = (char *) alloca (point + 1); | |
1733 | p = tmp_command; | |
1734 | ||
1735 | strncpy (tmp_command, line_buffer, point); | |
1736 | tmp_command[point] = '\0'; | |
1737 | /* Since text always contains some number of characters leading up | |
1738 | to point, we can find the equivalent position in tmp_command | |
1739 | by subtracting that many characters from the end of tmp_command. */ | |
1740 | word = tmp_command + point - strlen (text); | |
1741 | ||
1742 | if (point == 0) | |
1743 | { | |
1744 | /* An empty line we want to consider ambiguous; that is, it | |
1745 | could be any command. */ | |
1746 | c = (struct cmd_list_element *) -1; | |
1747 | result_list = 0; | |
1748 | } | |
1749 | else | |
1750 | { | |
1751 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1752 | } | |
1753 | ||
1754 | /* Move p up to the next interesting thing. */ | |
1755 | while (*p == ' ' || *p == '\t') | |
1756 | { | |
1757 | p++; | |
1758 | } | |
1759 | ||
1760 | if (!c) | |
1761 | { | |
1762 | /* It is an unrecognized command. So there are no | |
1763 | possible completions. */ | |
1764 | list = NULL; | |
1765 | } | |
1766 | else if (c == (struct cmd_list_element *) -1) | |
1767 | { | |
1768 | char *q; | |
1769 | ||
1770 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1771 | doesn't advance over that thing itself. Do so now. */ | |
1772 | q = p; | |
1773 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1774 | ++q; | |
1775 | if (q != tmp_command + point) | |
1776 | { | |
1777 | /* There is something beyond the ambiguous | |
1778 | command, so there are no possible completions. For | |
1779 | example, "info t " or "info t foo" does not complete | |
1780 | to anything, because "info t" can be "info target" or | |
1781 | "info terminal". */ | |
1782 | list = NULL; | |
1783 | } | |
1784 | else | |
1785 | { | |
1786 | /* We're trying to complete on the command which was ambiguous. | |
1787 | This we can deal with. */ | |
1788 | if (result_list) | |
1789 | { | |
1790 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1791 | word); | |
1792 | } | |
1793 | else | |
1794 | { | |
1795 | list = complete_on_cmdlist (cmdlist, p, word); | |
1796 | } | |
1797 | /* Insure that readline does the right thing with respect to | |
1798 | inserting quotes. */ | |
1799 | rl_completer_word_break_characters = | |
1800 | gdb_completer_command_word_break_characters; | |
1801 | } | |
1802 | } | |
1803 | else | |
1804 | { | |
1805 | /* We've recognized a full command. */ | |
1806 | ||
1807 | if (p == tmp_command + point) | |
1808 | { | |
1809 | /* There is no non-whitespace in the line beyond the command. */ | |
1810 | ||
1811 | if (p[-1] == ' ' || p[-1] == '\t') | |
1812 | { | |
1813 | /* The command is followed by whitespace; we need to complete | |
1814 | on whatever comes after command. */ | |
1815 | if (c->prefixlist) | |
1816 | { | |
1817 | /* It is a prefix command; what comes after it is | |
1818 | a subcommand (e.g. "info "). */ | |
1819 | list = complete_on_cmdlist (*c->prefixlist, p, word); | |
1820 | ||
1821 | /* Insure that readline does the right thing | |
1822 | with respect to inserting quotes. */ | |
1823 | rl_completer_word_break_characters = | |
1824 | gdb_completer_command_word_break_characters; | |
1825 | } | |
1826 | else if (c->enums) | |
1827 | { | |
1828 | list = complete_on_enum (c->enums, p, word); | |
1829 | rl_completer_word_break_characters = | |
1830 | gdb_completer_command_word_break_characters; | |
1831 | } | |
1832 | else | |
1833 | { | |
1834 | /* It is a normal command; what comes after it is | |
1835 | completed by the command's completer function. */ | |
1836 | list = (*c->completer) (p, word); | |
1837 | } | |
1838 | } | |
1839 | else | |
1840 | { | |
1841 | /* The command is not followed by whitespace; we need to | |
1842 | complete on the command itself. e.g. "p" which is a | |
1843 | command itself but also can complete to "print", "ptype" | |
1844 | etc. */ | |
1845 | char *q; | |
1846 | ||
1847 | /* Find the command we are completing on. */ | |
1848 | q = p; | |
1849 | while (q > tmp_command) | |
1850 | { | |
1851 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1852 | --q; | |
1853 | else | |
1854 | break; | |
1855 | } | |
1856 | ||
1857 | list = complete_on_cmdlist (result_list, q, word); | |
1858 | ||
1859 | /* Insure that readline does the right thing | |
1860 | with respect to inserting quotes. */ | |
1861 | rl_completer_word_break_characters = | |
1862 | gdb_completer_command_word_break_characters; | |
1863 | } | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | /* There is non-whitespace beyond the command. */ | |
1868 | ||
1869 | if (c->prefixlist && !c->allow_unknown) | |
1870 | { | |
1871 | /* It is an unrecognized subcommand of a prefix command, | |
1872 | e.g. "info adsfkdj". */ | |
1873 | list = NULL; | |
1874 | } | |
1875 | else if (c->enums) | |
1876 | { | |
1877 | list = complete_on_enum (c->enums, p, word); | |
1878 | } | |
1879 | else | |
1880 | { | |
1881 | /* It is a normal command. */ | |
1882 | list = (*c->completer) (p, word); | |
1883 | } | |
1884 | } | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | /* If we found a list of potential completions during initialization then | |
1889 | dole them out one at a time. The vector of completions is NULL | |
1890 | terminated, so after returning the last one, return NULL (and continue | |
1891 | to do so) each time we are called after that, until a new list is | |
1892 | available. */ | |
1893 | ||
1894 | if (list) | |
1895 | { | |
1896 | output = list[index]; | |
1897 | if (output) | |
1898 | { | |
1899 | index++; | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | #if 0 | |
1904 | /* Can't do this because readline hasn't yet checked the word breaks | |
1905 | for figuring out whether to insert a quote. */ | |
1906 | if (output == NULL) | |
1907 | /* Make sure the word break characters are set back to normal for the | |
1908 | next time that readline tries to complete something. */ | |
1909 | rl_completer_word_break_characters = | |
1910 | gdb_completer_word_break_characters; | |
1911 | #endif | |
1912 | ||
1913 | return (output); | |
1914 | } | |
1915 | ||
1916 | /* Line completion interface function for readline. */ | |
1917 | ||
1918 | static char * | |
1919 | readline_line_completion_function (text, matches) | |
1920 | char *text; | |
1921 | int matches; | |
1922 | { | |
1923 | return line_completion_function (text, matches, rl_line_buffer, rl_point); | |
1924 | } | |
1925 | ||
1926 | /* Skip over a possibly quoted word (as defined by the quote characters | |
1927 | and word break characters the completer uses). Returns pointer to the | |
1928 | location after the "word". */ | |
1929 | ||
1930 | char * | |
1931 | skip_quoted (str) | |
1932 | char *str; | |
1933 | { | |
1934 | char quote_char = '\0'; | |
1935 | char *scan; | |
1936 | ||
1937 | for (scan = str; *scan != '\0'; scan++) | |
1938 | { | |
1939 | if (quote_char != '\0') | |
1940 | { | |
1941 | /* Ignore everything until the matching close quote char */ | |
1942 | if (*scan == quote_char) | |
1943 | { | |
1944 | /* Found matching close quote. */ | |
1945 | scan++; | |
1946 | break; | |
1947 | } | |
1948 | } | |
1949 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1950 | { | |
1951 | /* Found start of a quoted string. */ | |
1952 | quote_char = *scan; | |
1953 | } | |
1954 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1955 | { | |
1956 | break; | |
1957 | } | |
1958 | } | |
1959 | return (scan); | |
1960 | } | |
1961 | ||
1962 | \f | |
1963 | #ifdef STOP_SIGNAL | |
1964 | static void | |
1965 | stop_sig (signo) | |
1966 | int signo; | |
1967 | { | |
1968 | #if STOP_SIGNAL == SIGTSTP | |
1969 | signal (SIGTSTP, SIG_DFL); | |
1970 | sigsetmask (0); | |
1971 | kill (getpid (), SIGTSTP); | |
1972 | signal (SIGTSTP, stop_sig); | |
1973 | #else | |
1974 | signal (STOP_SIGNAL, stop_sig); | |
1975 | #endif | |
1976 | printf_unfiltered ("%s", prompt); | |
1977 | gdb_flush (gdb_stdout); | |
1978 | ||
1979 | /* Forget about any previous command -- null line now will do nothing. */ | |
1980 | dont_repeat (); | |
1981 | } | |
1982 | #endif /* STOP_SIGNAL */ | |
1983 | ||
1984 | /* Initialize signal handlers. */ | |
1985 | static void | |
1986 | do_nothing (signo) | |
1987 | int signo; | |
1988 | { | |
1989 | /* Under System V the default disposition of a signal is reinstated after | |
1990 | the signal is caught and delivered to an application process. On such | |
1991 | systems one must restore the replacement signal handler if one wishes | |
1992 | to continue handling the signal in one's program. On BSD systems this | |
1993 | is not needed but it is harmless, and it simplifies the code to just do | |
1994 | it unconditionally. */ | |
1995 | signal (signo, do_nothing); | |
1996 | } | |
1997 | ||
1998 | static void | |
1999 | init_signals () | |
2000 | { | |
2001 | signal (SIGINT, request_quit); | |
2002 | ||
2003 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed | |
2004 | to the inferior and breakpoints will be ignored. */ | |
2005 | #ifdef SIGTRAP | |
2006 | signal (SIGTRAP, SIG_DFL); | |
2007 | #endif | |
2008 | ||
2009 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
2010 | passed to the inferior, which we don't want. It would be | |
2011 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
2012 | on BSD4.3 systems using vfork, that can affect the | |
2013 | GDB process as well as the inferior (the signal handling tables | |
2014 | might be in memory, shared between the two). Since we establish | |
2015 | a handler for SIGQUIT, when we call exec it will set the signal | |
2016 | to SIG_DFL for us. */ | |
2017 | signal (SIGQUIT, do_nothing); | |
2018 | #ifdef SIGHUP | |
2019 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
2020 | signal (SIGHUP, disconnect); | |
2021 | #endif | |
2022 | signal (SIGFPE, float_handler); | |
2023 | ||
2024 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
2025 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
2026 | #endif | |
2027 | } | |
2028 | \f | |
2029 | /* Read one line from the command input stream `instream' | |
2030 | into the local static buffer `linebuffer' (whose current length | |
2031 | is `linelength'). | |
2032 | The buffer is made bigger as necessary. | |
2033 | Returns the address of the start of the line. | |
2034 | ||
2035 | NULL is returned for end of file. | |
2036 | ||
2037 | *If* the instream == stdin & stdin is a terminal, the line read | |
2038 | is copied into the file line saver (global var char *line, | |
2039 | length linesize) so that it can be duplicated. | |
2040 | ||
2041 | This routine either uses fancy command line editing or | |
2042 | simple input as the user has requested. */ | |
2043 | ||
2044 | char * | |
2045 | command_line_input (prrompt, repeat, annotation_suffix) | |
2046 | char *prrompt; | |
2047 | int repeat; | |
2048 | char *annotation_suffix; | |
2049 | { | |
2050 | static char *linebuffer = 0; | |
2051 | static unsigned linelength = 0; | |
2052 | register char *p; | |
2053 | char *p1; | |
2054 | char *rl; | |
2055 | char *local_prompt = prrompt; | |
2056 | char *nline; | |
2057 | char got_eof = 0; | |
2058 | ||
2059 | /* The annotation suffix must be non-NULL. */ | |
2060 | if (annotation_suffix == NULL) | |
2061 | annotation_suffix = ""; | |
2062 | ||
2063 | if (annotation_level > 1 && instream == stdin) | |
2064 | { | |
2065 | local_prompt = alloca ((prrompt == NULL ? 0 : strlen (prrompt)) | |
2066 | + strlen (annotation_suffix) + 40); | |
2067 | if (prrompt == NULL) | |
2068 | local_prompt[0] = '\0'; | |
2069 | else | |
2070 | strcpy (local_prompt, prrompt); | |
2071 | strcat (local_prompt, "\n\032\032"); | |
2072 | strcat (local_prompt, annotation_suffix); | |
2073 | strcat (local_prompt, "\n"); | |
2074 | } | |
2075 | ||
2076 | if (linebuffer == 0) | |
2077 | { | |
2078 | linelength = 80; | |
2079 | linebuffer = (char *) xmalloc (linelength); | |
2080 | } | |
2081 | ||
2082 | p = linebuffer; | |
2083 | ||
2084 | /* Control-C quits instantly if typed while in this loop | |
2085 | since it should not wait until the user types a newline. */ | |
2086 | immediate_quit++; | |
2087 | #ifdef STOP_SIGNAL | |
2088 | if (job_control) | |
2089 | signal (STOP_SIGNAL, stop_sig); | |
2090 | #endif | |
2091 | ||
2092 | while (1) | |
2093 | { | |
2094 | /* Make sure that all output has been output. Some machines may let | |
2095 | you get away with leaving out some of the gdb_flush, but not all. */ | |
2096 | wrap_here (""); | |
2097 | gdb_flush (gdb_stdout); | |
2098 | gdb_flush (gdb_stderr); | |
2099 | ||
2100 | if (source_file_name != NULL) | |
2101 | { | |
2102 | ++source_line_number; | |
2103 | sprintf (source_error, | |
2104 | "%s%s:%d: Error in sourced command file:\n", | |
2105 | source_pre_error, | |
2106 | source_file_name, | |
2107 | source_line_number); | |
2108 | error_pre_print = source_error; | |
2109 | } | |
2110 | ||
2111 | if (annotation_level > 1 && instream == stdin) | |
2112 | { | |
2113 | printf_unfiltered ("\n\032\032pre-"); | |
2114 | printf_unfiltered (annotation_suffix); | |
2115 | printf_unfiltered ("\n"); | |
2116 | } | |
2117 | ||
2118 | /* Don't use fancy stuff if not talking to stdin. */ | |
2119 | if (readline_hook && instream == NULL) | |
2120 | { | |
2121 | rl = (*readline_hook) (local_prompt); | |
2122 | } | |
2123 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
2124 | { | |
2125 | rl = readline (local_prompt); | |
2126 | } | |
2127 | else | |
2128 | { | |
2129 | rl = gdb_readline (local_prompt); | |
2130 | } | |
2131 | ||
2132 | if (annotation_level > 1 && instream == stdin) | |
2133 | { | |
2134 | printf_unfiltered ("\n\032\032post-"); | |
2135 | printf_unfiltered (annotation_suffix); | |
2136 | printf_unfiltered ("\n"); | |
2137 | } | |
2138 | ||
2139 | if (!rl || rl == (char *) EOF) | |
2140 | { | |
2141 | got_eof = 1; | |
2142 | break; | |
2143 | } | |
2144 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
2145 | { | |
2146 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
2147 | nline = (char *) xrealloc (linebuffer, linelength); | |
2148 | p += nline - linebuffer; | |
2149 | linebuffer = nline; | |
2150 | } | |
2151 | p1 = rl; | |
2152 | /* Copy line. Don't copy null at end. (Leaves line alone | |
2153 | if this was just a newline) */ | |
2154 | while (*p1) | |
2155 | *p++ = *p1++; | |
2156 | ||
2157 | free (rl); /* Allocated in readline. */ | |
2158 | ||
2159 | if (p == linebuffer || *(p - 1) != '\\') | |
2160 | break; | |
2161 | ||
2162 | p--; /* Put on top of '\'. */ | |
2163 | local_prompt = (char *) 0; | |
2164 | } | |
2165 | ||
2166 | #ifdef STOP_SIGNAL | |
2167 | if (job_control) | |
2168 | signal (STOP_SIGNAL, SIG_DFL); | |
2169 | #endif | |
2170 | immediate_quit--; | |
2171 | ||
2172 | if (got_eof) | |
2173 | return NULL; | |
2174 | ||
2175 | #define SERVER_COMMAND_LENGTH 7 | |
2176 | server_command = | |
2177 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
2178 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); | |
2179 | if (server_command) | |
2180 | { | |
2181 | /* Note that we don't set `line'. Between this and the check in | |
2182 | dont_repeat, this insures that repeating will still do the | |
2183 | right thing. */ | |
2184 | *p = '\0'; | |
2185 | return linebuffer + SERVER_COMMAND_LENGTH; | |
2186 | } | |
2187 | ||
2188 | /* Do history expansion if that is wished. */ | |
2189 | if (history_expansion_p && instream == stdin | |
2190 | && ISATTY (instream)) | |
2191 | { | |
2192 | char *history_value; | |
2193 | int expanded; | |
2194 | ||
2195 | *p = '\0'; /* Insert null now. */ | |
2196 | expanded = history_expand (linebuffer, &history_value); | |
2197 | if (expanded) | |
2198 | { | |
2199 | /* Print the changes. */ | |
2200 | printf_unfiltered ("%s\n", history_value); | |
2201 | ||
2202 | /* If there was an error, call this function again. */ | |
2203 | if (expanded < 0) | |
2204 | { | |
2205 | free (history_value); | |
2206 | return command_line_input (prrompt, repeat, annotation_suffix); | |
2207 | } | |
2208 | if (strlen (history_value) > linelength) | |
2209 | { | |
2210 | linelength = strlen (history_value) + 1; | |
2211 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
2212 | } | |
2213 | strcpy (linebuffer, history_value); | |
2214 | p = linebuffer + strlen(linebuffer); | |
2215 | free (history_value); | |
2216 | } | |
2217 | } | |
2218 | ||
2219 | /* If we just got an empty line, and that is supposed | |
2220 | to repeat the previous command, return the value in the | |
2221 | global buffer. */ | |
2222 | if (repeat && p == linebuffer) | |
2223 | return line; | |
2224 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++) ; | |
2225 | if (repeat && !*p1) | |
2226 | return line; | |
2227 | ||
2228 | *p = 0; | |
2229 | ||
2230 | /* Add line to history if appropriate. */ | |
2231 | if (instream == stdin | |
2232 | && ISATTY (stdin) && *linebuffer) | |
2233 | add_history (linebuffer); | |
2234 | ||
2235 | /* Note: lines consisting solely of comments are added to the command | |
2236 | history. This is useful when you type a command, and then | |
2237 | realize you don't want to execute it quite yet. You can comment | |
2238 | out the command and then later fetch it from the value history | |
2239 | and remove the '#'. The kill ring is probably better, but some | |
2240 | people are in the habit of commenting things out. */ | |
2241 | if (*p1 == '#') | |
2242 | *p1 = '\0'; /* Found a comment. */ | |
2243 | ||
2244 | /* Save into global buffer if appropriate. */ | |
2245 | if (repeat) | |
2246 | { | |
2247 | if (linelength > linesize) | |
2248 | { | |
2249 | line = xrealloc (line, linelength); | |
2250 | linesize = linelength; | |
2251 | } | |
2252 | strcpy (line, linebuffer); | |
2253 | return line; | |
2254 | } | |
2255 | ||
2256 | return linebuffer; | |
2257 | } | |
2258 | \f | |
2259 | ||
2260 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
2261 | code bodies. This is typically used when we encounter an "else" | |
2262 | clause for an "if" command. */ | |
2263 | ||
2264 | static void | |
2265 | realloc_body_list (command, new_length) | |
2266 | struct command_line *command; | |
2267 | int new_length; | |
2268 | { | |
2269 | int n; | |
2270 | struct command_line **body_list; | |
2271 | ||
2272 | n = command->body_count; | |
2273 | ||
2274 | /* Nothing to do? */ | |
2275 | if (new_length <= n) | |
2276 | return; | |
2277 | ||
2278 | body_list = (struct command_line **) | |
2279 | xmalloc (sizeof (struct command_line *) * new_length); | |
2280 | ||
2281 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
2282 | ||
2283 | free (command->body_list); | |
2284 | command->body_list = body_list; | |
2285 | command->body_count = new_length; | |
2286 | } | |
2287 | ||
2288 | /* Read one line from the input stream. If the command is an "else" or | |
2289 | "end", return such an indication to the caller. */ | |
2290 | ||
2291 | static enum misc_command_type | |
2292 | read_next_line (command) | |
2293 | struct command_line **command; | |
2294 | { | |
2295 | char *p, *p1, *prompt_ptr, control_prompt[256]; | |
2296 | int i = 0; | |
2297 | ||
2298 | if (control_level >= 254) | |
2299 | error ("Control nesting too deep!\n"); | |
2300 | ||
2301 | /* Set a prompt based on the nesting of the control commands. */ | |
2302 | if (instream == stdin || (instream == 0 && readline_hook != NULL)) | |
2303 | { | |
2304 | for (i = 0; i < control_level; i++) | |
2305 | control_prompt[i] = ' '; | |
2306 | control_prompt[i] = '>'; | |
2307 | control_prompt[i+1] = '\0'; | |
2308 | prompt_ptr = (char *)&control_prompt[0]; | |
2309 | } | |
2310 | else | |
2311 | prompt_ptr = NULL; | |
2312 | ||
2313 | p = command_line_input (prompt_ptr, instream == stdin, "commands"); | |
2314 | ||
2315 | /* Not sure what to do here. */ | |
2316 | if (p == NULL) | |
2317 | return end_command; | |
2318 | ||
2319 | /* Strip leading and trailing whitespace. */ | |
2320 | while (*p == ' ' || *p == '\t') | |
2321 | p++; | |
2322 | ||
2323 | p1 = p + strlen (p); | |
2324 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) | |
2325 | p1--; | |
2326 | ||
2327 | /* Blanks and comments don't really do anything, but we need to | |
2328 | distinguish them from else, end and other commands which can be | |
2329 | executed. */ | |
2330 | if (p1 == p || p[0] == '#') | |
2331 | return nop_command; | |
2332 | ||
2333 | /* Is this the end of a simple, while, or if control structure? */ | |
2334 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
2335 | return end_command; | |
2336 | ||
2337 | /* Is the else clause of an if control structure? */ | |
2338 | if (p1 - p == 4 && !strncmp (p, "else", 4)) | |
2339 | return else_command; | |
2340 | ||
2341 | /* Check for while, if, break, continue, etc and build a new command | |
2342 | line structure for them. */ | |
2343 | if (p1 - p > 5 && !strncmp (p, "while", 5)) | |
2344 | *command = build_command_line (while_control, p + 6); | |
2345 | else if (p1 - p > 2 && !strncmp (p, "if", 2)) | |
2346 | *command = build_command_line (if_control, p + 3); | |
2347 | else if (p1 - p == 10 && !strncmp (p, "loop_break", 10)) | |
2348 | { | |
2349 | *command = (struct command_line *) | |
2350 | xmalloc (sizeof (struct command_line)); | |
2351 | (*command)->next = NULL; | |
2352 | (*command)->line = NULL; | |
2353 | (*command)->control_type = break_control; | |
2354 | (*command)->body_count = 0; | |
2355 | (*command)->body_list = NULL; | |
2356 | } | |
2357 | else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13)) | |
2358 | { | |
2359 | *command = (struct command_line *) | |
2360 | xmalloc (sizeof (struct command_line)); | |
2361 | (*command)->next = NULL; | |
2362 | (*command)->line = NULL; | |
2363 | (*command)->control_type = continue_control; | |
2364 | (*command)->body_count = 0; | |
2365 | (*command)->body_list = NULL; | |
2366 | } | |
2367 | else | |
2368 | { | |
2369 | /* A normal command. */ | |
2370 | *command = (struct command_line *) | |
2371 | xmalloc (sizeof (struct command_line)); | |
2372 | (*command)->next = NULL; | |
2373 | (*command)->line = savestring (p, p1 - p); | |
2374 | (*command)->control_type = simple_control; | |
2375 | (*command)->body_count = 0; | |
2376 | (*command)->body_list = NULL; | |
2377 | } | |
2378 | ||
2379 | /* Nothing special. */ | |
2380 | return ok_command; | |
2381 | } | |
2382 | ||
2383 | /* Recursively read in the control structures and create a command_line | |
2384 | structure from them. | |
2385 | ||
2386 | The parent_control parameter is the control structure in which the | |
2387 | following commands are nested. */ | |
2388 | ||
2389 | static enum command_control_type | |
2390 | recurse_read_control_structure (current_cmd) | |
2391 | struct command_line *current_cmd; | |
2392 | { | |
2393 | int current_body, i; | |
2394 | enum misc_command_type val; | |
2395 | enum command_control_type ret; | |
2396 | struct command_line **body_ptr, *child_tail, *next; | |
2397 | ||
2398 | child_tail = NULL; | |
2399 | current_body = 1; | |
2400 | ||
2401 | /* Sanity checks. */ | |
2402 | if (current_cmd->control_type == simple_control) | |
2403 | { | |
2404 | error ("Recursed on a simple control type\n"); | |
2405 | return invalid_control; | |
2406 | } | |
2407 | ||
2408 | if (current_body > current_cmd->body_count) | |
2409 | { | |
2410 | error ("Allocated body is smaller than this command type needs\n"); | |
2411 | return invalid_control; | |
2412 | } | |
2413 | ||
2414 | /* Read lines from the input stream and build control structures. */ | |
2415 | while (1) | |
2416 | { | |
2417 | dont_repeat (); | |
2418 | ||
2419 | next = NULL; | |
2420 | val = read_next_line (&next); | |
2421 | ||
2422 | /* Just skip blanks and comments. */ | |
2423 | if (val == nop_command) | |
2424 | continue; | |
2425 | ||
2426 | if (val == end_command) | |
2427 | { | |
2428 | if (current_cmd->control_type == while_control | |
2429 | || current_cmd->control_type == if_control) | |
2430 | { | |
2431 | /* Success reading an entire control structure. */ | |
2432 | ret = simple_control; | |
2433 | break; | |
2434 | } | |
2435 | else | |
2436 | { | |
2437 | ret = invalid_control; | |
2438 | break; | |
2439 | } | |
2440 | } | |
2441 | ||
2442 | /* Not the end of a control structure. */ | |
2443 | if (val == else_command) | |
2444 | { | |
2445 | if (current_cmd->control_type == if_control | |
2446 | && current_body == 1) | |
2447 | { | |
2448 | realloc_body_list (current_cmd, 2); | |
2449 | current_body = 2; | |
2450 | child_tail = NULL; | |
2451 | continue; | |
2452 | } | |
2453 | else | |
2454 | { | |
2455 | ret = invalid_control; | |
2456 | break; | |
2457 | } | |
2458 | } | |
2459 | ||
2460 | if (child_tail) | |
2461 | { | |
2462 | child_tail->next = next; | |
2463 | } | |
2464 | else | |
2465 | { | |
2466 | body_ptr = current_cmd->body_list; | |
2467 | for (i = 1; i < current_body; i++) | |
2468 | body_ptr++; | |
2469 | ||
2470 | *body_ptr = next; | |
2471 | ||
2472 | } | |
2473 | ||
2474 | child_tail = next; | |
2475 | ||
2476 | /* If the latest line is another control structure, then recurse | |
2477 | on it. */ | |
2478 | if (next->control_type == while_control | |
2479 | || next->control_type == if_control) | |
2480 | { | |
2481 | control_level++; | |
2482 | ret = recurse_read_control_structure (next); | |
2483 | control_level--; | |
2484 | ||
2485 | if (ret != simple_control) | |
2486 | break; | |
2487 | } | |
2488 | } | |
2489 | ||
2490 | dont_repeat (); | |
2491 | ||
2492 | return ret; | |
2493 | } | |
2494 | ||
2495 | /* Read lines from the input stream and accumulate them in a chain of | |
2496 | struct command_line's, which is then returned. For input from a | |
2497 | terminal, the special command "end" is used to mark the end of the | |
2498 | input, and is not included in the returned chain of commands. */ | |
2499 | ||
2500 | #define END_MESSAGE "End with a line saying just \"end\"." | |
2501 | ||
2502 | struct command_line * | |
2503 | read_command_lines (prompt, from_tty) | |
2504 | char *prompt; | |
2505 | int from_tty; | |
2506 | { | |
2507 | struct command_line *head, *tail, *next; | |
2508 | struct cleanup *old_chain; | |
2509 | enum command_control_type ret; | |
2510 | enum misc_command_type val; | |
2511 | ||
7a292a7a | 2512 | control_level = 0; |
c906108c SS |
2513 | if (readline_begin_hook) |
2514 | { | |
2515 | /* Note - intentional to merge messages with no newline */ | |
2516 | (*readline_begin_hook) ("%s %s\n", prompt, END_MESSAGE); | |
2517 | } | |
2518 | else if (from_tty && input_from_terminal_p ()) | |
2519 | { | |
2520 | printf_unfiltered ("%s\n%s\n", prompt, END_MESSAGE); | |
2521 | gdb_flush (gdb_stdout); | |
2522 | } | |
2523 | ||
2524 | head = tail = NULL; | |
2525 | old_chain = NULL; | |
2526 | ||
2527 | while (1) | |
2528 | { | |
2529 | val = read_next_line (&next); | |
2530 | ||
2531 | /* Ignore blank lines or comments. */ | |
2532 | if (val == nop_command) | |
2533 | continue; | |
2534 | ||
2535 | if (val == end_command) | |
2536 | { | |
2537 | ret = simple_control; | |
2538 | break; | |
2539 | } | |
2540 | ||
2541 | if (val != ok_command) | |
2542 | { | |
2543 | ret = invalid_control; | |
2544 | break; | |
2545 | } | |
2546 | ||
2547 | if (next->control_type == while_control | |
2548 | || next->control_type == if_control) | |
2549 | { | |
2550 | control_level++; | |
2551 | ret = recurse_read_control_structure (next); | |
2552 | control_level--; | |
2553 | ||
2554 | if (ret == invalid_control) | |
2555 | break; | |
2556 | } | |
2557 | ||
2558 | if (tail) | |
2559 | { | |
2560 | tail->next = next; | |
2561 | } | |
2562 | else | |
2563 | { | |
2564 | head = next; | |
2565 | old_chain = make_cleanup ((make_cleanup_func) free_command_lines, | |
2566 | &head); | |
2567 | } | |
2568 | tail = next; | |
2569 | } | |
2570 | ||
2571 | dont_repeat (); | |
2572 | ||
2573 | if (head) | |
2574 | { | |
2575 | if (ret != invalid_control) | |
2576 | { | |
2577 | discard_cleanups (old_chain); | |
2578 | } | |
2579 | else | |
2580 | do_cleanups (old_chain); | |
2581 | } | |
2582 | ||
2583 | if (readline_end_hook) | |
2584 | { | |
2585 | (*readline_end_hook) (); | |
2586 | } | |
2587 | return (head); | |
2588 | } | |
2589 | ||
2590 | /* Free a chain of struct command_line's. */ | |
2591 | ||
2592 | void | |
2593 | free_command_lines (lptr) | |
2594 | struct command_line **lptr; | |
2595 | { | |
2596 | register struct command_line *l = *lptr; | |
2597 | register struct command_line *next; | |
2598 | struct command_line **blist; | |
2599 | int i; | |
2600 | ||
2601 | while (l) | |
2602 | { | |
2603 | if (l->body_count > 0) | |
2604 | { | |
2605 | blist = l->body_list; | |
2606 | for (i = 0; i < l->body_count; i++, blist++) | |
2607 | free_command_lines (blist); | |
2608 | } | |
2609 | next = l->next; | |
2610 | free (l->line); | |
2611 | free ((PTR)l); | |
2612 | l = next; | |
2613 | } | |
2614 | } | |
2615 | \f | |
2616 | /* Add an element to the list of info subcommands. */ | |
2617 | ||
2618 | void | |
2619 | add_info (name, fun, doc) | |
2620 | char *name; | |
2621 | void (*fun) PARAMS ((char *, int)); | |
2622 | char *doc; | |
2623 | { | |
2624 | add_cmd (name, no_class, fun, doc, &infolist); | |
2625 | } | |
2626 | ||
2627 | /* Add an alias to the list of info subcommands. */ | |
2628 | ||
2629 | void | |
2630 | add_info_alias (name, oldname, abbrev_flag) | |
2631 | char *name; | |
2632 | char *oldname; | |
2633 | int abbrev_flag; | |
2634 | { | |
2635 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
2636 | } | |
2637 | ||
2638 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2639 | Therefore, its own definition is called only for "info" with no args. */ | |
2640 | ||
2641 | /* ARGSUSED */ | |
2642 | static void | |
2643 | info_command (arg, from_tty) | |
2644 | char *arg; | |
2645 | int from_tty; | |
2646 | { | |
2647 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); | |
2648 | help_list (infolist, "info ", -1, gdb_stdout); | |
2649 | } | |
2650 | ||
2651 | /* The "complete" command is used by Emacs to implement completion. */ | |
2652 | ||
2653 | /* ARGSUSED */ | |
2654 | static void | |
2655 | complete_command (arg, from_tty) | |
2656 | char *arg; | |
2657 | int from_tty; | |
2658 | { | |
2659 | int i; | |
2660 | int argpoint; | |
2661 | char *completion; | |
2662 | ||
2663 | dont_repeat (); | |
2664 | ||
2665 | if (arg == NULL) | |
2666 | arg = ""; | |
2667 | argpoint = strlen (arg); | |
2668 | ||
2669 | for (completion = line_completion_function (arg, i = 0, arg, argpoint); | |
2670 | completion; | |
2671 | completion = line_completion_function (arg, ++i, arg, argpoint)) | |
2672 | { | |
2673 | printf_unfiltered ("%s\n", completion); | |
2674 | free (completion); | |
2675 | } | |
2676 | } | |
2677 | ||
2678 | /* The "show" command with no arguments shows all the settings. */ | |
2679 | ||
2680 | /* ARGSUSED */ | |
2681 | static void | |
2682 | show_command (arg, from_tty) | |
2683 | char *arg; | |
2684 | int from_tty; | |
2685 | { | |
2686 | cmd_show_list (showlist, from_tty, ""); | |
2687 | } | |
2688 | \f | |
2689 | /* Add an element to the list of commands. */ | |
2690 | ||
2691 | void | |
2692 | add_com (name, class, fun, doc) | |
2693 | char *name; | |
2694 | enum command_class class; | |
2695 | void (*fun) PARAMS ((char *, int)); | |
2696 | char *doc; | |
2697 | { | |
2698 | add_cmd (name, class, fun, doc, &cmdlist); | |
2699 | } | |
2700 | ||
2701 | /* Add an alias or abbreviation command to the list of commands. */ | |
2702 | ||
2703 | void | |
2704 | add_com_alias (name, oldname, class, abbrev_flag) | |
2705 | char *name; | |
2706 | char *oldname; | |
2707 | enum command_class class; | |
2708 | int abbrev_flag; | |
2709 | { | |
2710 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
2711 | } | |
2712 | ||
2713 | void | |
2714 | error_no_arg (why) | |
2715 | char *why; | |
2716 | { | |
2717 | error ("Argument required (%s).", why); | |
2718 | } | |
2719 | ||
2720 | /* ARGSUSED */ | |
2721 | static void | |
2722 | help_command (command, from_tty) | |
2723 | char *command; | |
2724 | int from_tty; /* Ignored */ | |
2725 | { | |
2726 | help_cmd (command, gdb_stdout); | |
2727 | } | |
2728 | \f | |
2729 | static void | |
2730 | validate_comname (comname) | |
2731 | char *comname; | |
2732 | { | |
2733 | register char *p; | |
2734 | ||
2735 | if (comname == 0) | |
2736 | error_no_arg ("name of command to define"); | |
2737 | ||
2738 | p = comname; | |
2739 | while (*p) | |
2740 | { | |
2741 | if (!isalnum(*p) && *p != '-' && *p != '_') | |
2742 | error ("Junk in argument list: \"%s\"", p); | |
2743 | p++; | |
2744 | } | |
2745 | } | |
2746 | ||
2747 | /* This is just a placeholder in the command data structures. */ | |
2748 | static void | |
2749 | user_defined_command (ignore, from_tty) | |
2750 | char *ignore; | |
2751 | int from_tty; | |
2752 | { | |
2753 | } | |
2754 | ||
2755 | static void | |
2756 | define_command (comname, from_tty) | |
2757 | char *comname; | |
2758 | int from_tty; | |
2759 | { | |
2760 | register struct command_line *cmds; | |
2761 | register struct cmd_list_element *c, *newc, *hookc = 0; | |
2762 | char *tem = comname; | |
2763 | char tmpbuf[128]; | |
2764 | #define HOOK_STRING "hook-" | |
2765 | #define HOOK_LEN 5 | |
2766 | ||
2767 | validate_comname (comname); | |
2768 | ||
2769 | /* Look it up, and verify that we got an exact match. */ | |
2770 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); | |
2771 | if (c && !STREQ (comname, c->name)) | |
2772 | c = 0; | |
2773 | ||
2774 | if (c) | |
2775 | { | |
2776 | if (c->class == class_user || c->class == class_alias) | |
2777 | tem = "Redefine command \"%s\"? "; | |
2778 | else | |
2779 | tem = "Really redefine built-in command \"%s\"? "; | |
2780 | if (!query (tem, c->name)) | |
2781 | error ("Command \"%s\" not redefined.", c->name); | |
2782 | } | |
2783 | ||
2784 | /* If this new command is a hook, then mark the command which it | |
2785 | is hooking. Note that we allow hooking `help' commands, so that | |
2786 | we can hook the `stop' pseudo-command. */ | |
2787 | ||
2788 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2789 | { | |
2790 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
2791 | tem = comname+HOOK_LEN; | |
2792 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2793 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) | |
2794 | hookc = 0; | |
2795 | if (!hookc) | |
2796 | { | |
2797 | warning ("Your new `%s' command does not hook any existing command.", | |
2798 | comname); | |
2799 | if (!query ("Proceed? ")) | |
2800 | error ("Not confirmed."); | |
2801 | } | |
2802 | } | |
2803 | ||
2804 | comname = savestring (comname, strlen (comname)); | |
2805 | ||
2806 | /* If the rest of the commands will be case insensitive, this one | |
2807 | should behave in the same manner. */ | |
2808 | for (tem = comname; *tem; tem++) | |
2809 | if (isupper(*tem)) *tem = tolower(*tem); | |
2810 | ||
c906108c SS |
2811 | sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname); |
2812 | cmds = read_command_lines (tmpbuf, from_tty); | |
2813 | ||
2814 | if (c && c->class == class_user) | |
2815 | free_command_lines (&c->user_commands); | |
2816 | ||
2817 | newc = add_cmd (comname, class_user, user_defined_command, | |
2818 | (c && c->class == class_user) | |
2819 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
2820 | newc->user_commands = cmds; | |
2821 | ||
2822 | /* If this new command is a hook, then mark both commands as being | |
2823 | tied. */ | |
2824 | if (hookc) | |
2825 | { | |
2826 | hookc->hook = newc; /* Target gets hooked. */ | |
2827 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2828 | } | |
2829 | } | |
2830 | ||
2831 | static void | |
2832 | document_command (comname, from_tty) | |
2833 | char *comname; | |
2834 | int from_tty; | |
2835 | { | |
2836 | struct command_line *doclines; | |
2837 | register struct cmd_list_element *c; | |
2838 | char *tem = comname; | |
2839 | char tmpbuf[128]; | |
2840 | ||
2841 | validate_comname (comname); | |
2842 | ||
2843 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2844 | ||
2845 | if (c->class != class_user) | |
2846 | error ("Command \"%s\" is built-in.", comname); | |
2847 | ||
2848 | sprintf (tmpbuf, "Type documentation for \"%s\".", comname); | |
2849 | doclines = read_command_lines (tmpbuf, from_tty); | |
2850 | ||
2851 | if (c->doc) free (c->doc); | |
2852 | ||
2853 | { | |
2854 | register struct command_line *cl1; | |
2855 | register int len = 0; | |
2856 | ||
2857 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2858 | len += strlen (cl1->line) + 1; | |
2859 | ||
2860 | c->doc = (char *) xmalloc (len + 1); | |
2861 | *c->doc = 0; | |
2862 | ||
2863 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2864 | { | |
2865 | strcat (c->doc, cl1->line); | |
2866 | if (cl1->next) | |
2867 | strcat (c->doc, "\n"); | |
2868 | } | |
2869 | } | |
2870 | ||
2871 | free_command_lines (&doclines); | |
2872 | } | |
2873 | \f | |
2874 | /* Print the GDB banner. */ | |
2875 | void | |
2876 | print_gdb_version (stream) | |
2877 | GDB_FILE *stream; | |
2878 | { | |
2879 | /* From GNU coding standards, first line is meant to be easy for a | |
2880 | program to parse, and is just canonical program name and version | |
2881 | number, which starts after last space. */ | |
2882 | ||
2883 | fprintf_filtered (stream, "GNU gdb %s\n", version); | |
2884 | ||
2885 | /* Second line is a copyright notice. */ | |
2886 | ||
2887 | fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n"); | |
2888 | ||
2889 | /* Following the copyright is a brief statement that the program is | |
2890 | free software, that users are free to copy and change it on | |
2891 | certain conditions, that it is covered by the GNU GPL, and that | |
2892 | there is no warranty. */ | |
2893 | ||
2894 | fprintf_filtered (stream, "\ | |
2895 | GDB is free software, covered by the GNU General Public License, and you are\n\ | |
2896 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
2897 | Type \"show copying\" to see the conditions.\n\ | |
2898 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
2899 | ||
2900 | /* After the required info we print the configuration information. */ | |
2901 | ||
2902 | fprintf_filtered (stream, "This GDB was configured as \""); | |
2903 | if (!STREQ (host_name, target_name)) | |
2904 | { | |
2905 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
2906 | } | |
2907 | else | |
2908 | { | |
2909 | fprintf_filtered (stream, "%s", host_name); | |
2910 | } | |
2911 | fprintf_filtered (stream, "\"."); | |
2912 | } | |
2913 | ||
2914 | /* ARGSUSED */ | |
2915 | static void | |
2916 | show_version (args, from_tty) | |
2917 | char *args; | |
2918 | int from_tty; | |
2919 | { | |
2920 | immediate_quit++; | |
2921 | print_gdb_version (gdb_stdout); | |
2922 | printf_filtered ("\n"); | |
2923 | immediate_quit--; | |
2924 | } | |
2925 | \f | |
2926 | /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb | |
2927 | is obsolete. */ | |
2928 | ||
2929 | void | |
2930 | print_prompt () | |
2931 | { | |
2932 | printf_unfiltered ("%s", prompt); | |
2933 | gdb_flush (gdb_stdout); | |
2934 | } | |
2935 | ||
2936 | /* This replaces the above for the frontends: it returns a pointer | |
2937 | to the prompt. */ | |
2938 | char * | |
2939 | get_prompt () | |
2940 | { | |
2941 | return prompt; | |
2942 | } | |
2943 | ||
2944 | void | |
2945 | set_prompt (s) | |
2946 | char *s; | |
2947 | { | |
2948 | /* ??rehrauer: I don't know why this fails, since it looks as though | |
2949 | assignments to prompt are wrapped in calls to savestring... | |
2950 | if (prompt != NULL) | |
2951 | free (prompt); | |
2952 | */ | |
2953 | prompt = savestring (s, strlen (s)); | |
2954 | } | |
2955 | ||
2956 | \f | |
2957 | /* If necessary, make the user confirm that we should quit. Return | |
2958 | non-zero if we should quit, zero if we shouldn't. */ | |
2959 | ||
2960 | int | |
2961 | quit_confirm () | |
2962 | { | |
2963 | if (inferior_pid != 0 && target_has_execution) | |
2964 | { | |
2965 | char *s; | |
2966 | ||
2967 | /* This is something of a hack. But there's no reliable way to | |
2968 | see if a GUI is running. The `use_windows' variable doesn't | |
2969 | cut it. */ | |
2970 | if (init_ui_hook) | |
2971 | s = "A debugging session is active.\nDo you still want to close the debugger?"; | |
2972 | else if (attach_flag) | |
2973 | s = "The program is running. Quit anyway (and detach it)? "; | |
2974 | else | |
2975 | s = "The program is running. Exit anyway? "; | |
2976 | ||
2977 | if (! query (s)) | |
2978 | return 0; | |
2979 | } | |
2980 | ||
2981 | return 1; | |
2982 | } | |
2983 | ||
2984 | /* Quit without asking for confirmation. */ | |
2985 | ||
2986 | void | |
2987 | quit_force (args, from_tty) | |
2988 | char *args; | |
2989 | int from_tty; | |
2990 | { | |
2991 | int exit_code = 0; | |
2992 | ||
2993 | /* An optional expression may be used to cause gdb to terminate with the | |
2994 | value of that expression. */ | |
2995 | if (args) | |
2996 | { | |
2997 | value_ptr val = parse_and_eval (args); | |
2998 | ||
2999 | exit_code = (int) value_as_long (val); | |
3000 | } | |
3001 | ||
3002 | if (inferior_pid != 0 && target_has_execution) | |
3003 | { | |
3004 | if (attach_flag) | |
3005 | target_detach (args, from_tty); | |
3006 | else | |
3007 | target_kill (); | |
3008 | } | |
3009 | ||
3010 | /* UDI wants this, to kill the TIP. */ | |
3011 | target_close (1); | |
3012 | ||
3013 | /* Save the history information if it is appropriate to do so. */ | |
3014 | if (write_history_p && history_filename) | |
3015 | write_history (history_filename); | |
3016 | ||
3017 | do_final_cleanups(ALL_CLEANUPS); /* Do any final cleanups before exiting */ | |
3018 | ||
3019 | #if defined(TUI) | |
3020 | /* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */ | |
3021 | /* The above does not need to be inside a tuiDo(), since | |
3022 | * it is not manipulating the curses screen, but rather, | |
3023 | * it is tearing it down. | |
3024 | */ | |
3025 | if (tui_version) | |
3026 | tuiCleanUp(); | |
3027 | #endif | |
3028 | ||
3029 | exit (exit_code); | |
3030 | } | |
3031 | ||
3032 | /* Handle the quit command. */ | |
3033 | ||
3034 | void | |
3035 | quit_command (args, from_tty) | |
3036 | char *args; | |
3037 | int from_tty; | |
3038 | { | |
3039 | if (! quit_confirm ()) | |
3040 | error ("Not confirmed."); | |
3041 | quit_force (args, from_tty); | |
3042 | } | |
3043 | ||
3044 | /* Returns whether GDB is running on a terminal and whether the user | |
3045 | desires that questions be asked of them on that terminal. */ | |
3046 | ||
3047 | int | |
3048 | input_from_terminal_p () | |
3049 | { | |
3050 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
3051 | } | |
3052 | \f | |
3053 | /* ARGSUSED */ | |
3054 | static void | |
3055 | pwd_command (args, from_tty) | |
3056 | char *args; | |
3057 | int from_tty; | |
3058 | { | |
3059 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
3060 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
3061 | ||
3062 | if (!STREQ (gdb_dirbuf, current_directory)) | |
3063 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", | |
3064 | current_directory, gdb_dirbuf); | |
3065 | else | |
3066 | printf_unfiltered ("Working directory %s.\n", current_directory); | |
3067 | } | |
3068 | ||
3069 | void | |
3070 | cd_command (dir, from_tty) | |
3071 | char *dir; | |
3072 | int from_tty; | |
3073 | { | |
3074 | int len; | |
3075 | /* Found something other than leading repetitions of "/..". */ | |
3076 | int found_real_path; | |
3077 | char *p; | |
3078 | ||
3079 | /* If the new directory is absolute, repeat is a no-op; if relative, | |
3080 | repeat might be useful but is more likely to be a mistake. */ | |
3081 | dont_repeat (); | |
3082 | ||
3083 | if (dir == 0) | |
3084 | error_no_arg ("new working directory"); | |
3085 | ||
3086 | dir = tilde_expand (dir); | |
3087 | make_cleanup (free, dir); | |
3088 | ||
3089 | if (chdir (dir) < 0) | |
3090 | perror_with_name (dir); | |
3091 | ||
3092 | len = strlen (dir); | |
3093 | dir = savestring (dir, len - (len > 1 && SLASH_P(dir[len-1]))); | |
3094 | if (ROOTED_P(dir)) | |
3095 | current_directory = dir; | |
3096 | else | |
3097 | { | |
3098 | if (SLASH_P (current_directory[0]) && current_directory[1] == '\0') | |
3099 | current_directory = concat (current_directory, dir, NULL); | |
3100 | else | |
3101 | current_directory = concat (current_directory, SLASH_STRING, dir, NULL); | |
3102 | free (dir); | |
3103 | } | |
3104 | ||
3105 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
3106 | ||
3107 | found_real_path = 0; | |
3108 | for (p = current_directory; *p;) | |
3109 | { | |
3110 | if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2]))) | |
3111 | strcpy (p, p + 2); | |
3112 | else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.' | |
3113 | && (p[3] == 0 || SLASH_P (p[3]))) | |
3114 | { | |
3115 | if (found_real_path) | |
3116 | { | |
3117 | /* Search backwards for the directory just before the "/.." | |
3118 | and obliterate it and the "/..". */ | |
3119 | char *q = p; | |
3120 | while (q != current_directory && ! SLASH_P (q[-1])) | |
3121 | --q; | |
3122 | ||
3123 | if (q == current_directory) | |
3124 | /* current_directory is | |
3125 | a relative pathname ("can't happen"--leave it alone). */ | |
3126 | ++p; | |
3127 | else | |
3128 | { | |
3129 | strcpy (q - 1, p + 3); | |
3130 | p = q - 1; | |
3131 | } | |
3132 | } | |
3133 | else | |
3134 | /* We are dealing with leading repetitions of "/..", for example | |
3135 | "/../..", which is the Mach super-root. */ | |
3136 | p += 3; | |
3137 | } | |
3138 | else | |
3139 | { | |
3140 | found_real_path = 1; | |
3141 | ++p; | |
3142 | } | |
3143 | } | |
3144 | ||
3145 | forget_cached_source_info (); | |
3146 | ||
3147 | if (from_tty) | |
3148 | pwd_command ((char *) 0, 1); | |
3149 | } | |
3150 | \f | |
3151 | struct source_cleanup_lines_args { | |
3152 | int old_line; | |
3153 | char *old_file; | |
3154 | char *old_pre_error; | |
3155 | char *old_error_pre_print; | |
3156 | }; | |
3157 | ||
3158 | static void | |
3159 | source_cleanup_lines (args) | |
3160 | PTR args; | |
3161 | { | |
3162 | struct source_cleanup_lines_args *p = | |
3163 | (struct source_cleanup_lines_args *)args; | |
3164 | source_line_number = p->old_line; | |
3165 | source_file_name = p->old_file; | |
3166 | source_pre_error = p->old_pre_error; | |
3167 | error_pre_print = p->old_error_pre_print; | |
3168 | } | |
3169 | ||
3170 | /* ARGSUSED */ | |
3171 | void | |
3172 | source_command (args, from_tty) | |
3173 | char *args; | |
3174 | int from_tty; | |
3175 | { | |
3176 | FILE *stream; | |
3177 | struct cleanup *old_cleanups; | |
3178 | char *file = args; | |
3179 | struct source_cleanup_lines_args old_lines; | |
3180 | int needed_length; | |
3181 | ||
3182 | if (file == NULL) | |
3183 | { | |
3184 | error ("source command requires pathname of file to source."); | |
3185 | } | |
3186 | ||
3187 | file = tilde_expand (file); | |
3188 | old_cleanups = make_cleanup (free, file); | |
3189 | ||
3190 | stream = fopen (file, FOPEN_RT); | |
3191 | if (!stream) | |
7a292a7a SS |
3192 | { |
3193 | if (from_tty) | |
3194 | perror_with_name (file); | |
3195 | else | |
3196 | return; | |
3197 | } | |
c906108c SS |
3198 | |
3199 | make_cleanup ((make_cleanup_func) fclose, stream); | |
3200 | ||
3201 | old_lines.old_line = source_line_number; | |
3202 | old_lines.old_file = source_file_name; | |
3203 | old_lines.old_pre_error = source_pre_error; | |
3204 | old_lines.old_error_pre_print = error_pre_print; | |
3205 | make_cleanup (source_cleanup_lines, &old_lines); | |
3206 | source_line_number = 0; | |
3207 | source_file_name = file; | |
3208 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
3209 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
3210 | make_cleanup (free, source_pre_error); | |
3211 | /* This will get set every time we read a line. So it won't stay "" for | |
3212 | long. */ | |
3213 | error_pre_print = ""; | |
3214 | ||
3215 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
3216 | if (source_error_allocated < needed_length) | |
3217 | { | |
3218 | source_error_allocated *= 2; | |
3219 | if (source_error_allocated < needed_length) | |
3220 | source_error_allocated = needed_length; | |
3221 | if (source_error == NULL) | |
3222 | source_error = xmalloc (source_error_allocated); | |
3223 | else | |
3224 | source_error = xrealloc (source_error, source_error_allocated); | |
3225 | } | |
3226 | ||
3227 | read_command_file (stream); | |
3228 | ||
3229 | do_cleanups (old_cleanups); | |
3230 | } | |
3231 | ||
3232 | /* ARGSUSED */ | |
3233 | static void | |
3234 | echo_command (text, from_tty) | |
3235 | char *text; | |
3236 | int from_tty; | |
3237 | { | |
3238 | char *p = text; | |
3239 | register int c; | |
3240 | ||
3241 | if (text) | |
3242 | while ((c = *p++) != '\0') | |
3243 | { | |
3244 | if (c == '\\') | |
3245 | { | |
3246 | /* \ at end of argument is used after spaces | |
3247 | so they won't be lost. */ | |
3248 | if (*p == 0) | |
3249 | return; | |
3250 | ||
3251 | c = parse_escape (&p); | |
3252 | if (c >= 0) | |
3253 | printf_filtered ("%c", c); | |
3254 | } | |
3255 | else | |
3256 | printf_filtered ("%c", c); | |
3257 | } | |
3258 | ||
3259 | /* Force this output to appear now. */ | |
3260 | wrap_here (""); | |
3261 | gdb_flush (gdb_stdout); | |
3262 | } | |
3263 | ||
3264 | /* ARGSUSED */ | |
3265 | static void | |
3266 | dont_repeat_command (ignored, from_tty) | |
3267 | char *ignored; | |
3268 | int from_tty; | |
3269 | { | |
3270 | *line = 0; /* Can't call dont_repeat here because we're not | |
3271 | necessarily reading from stdin. */ | |
3272 | } | |
3273 | \f | |
3274 | /* Functions to manipulate command line editing control variables. */ | |
3275 | ||
3276 | /* Number of commands to print in each call to show_commands. */ | |
3277 | #define Hist_print 10 | |
3278 | static void | |
3279 | show_commands (args, from_tty) | |
3280 | char *args; | |
3281 | int from_tty; | |
3282 | { | |
3283 | /* Index for history commands. Relative to history_base. */ | |
3284 | int offset; | |
3285 | ||
3286 | /* Number of the history entry which we are planning to display next. | |
3287 | Relative to history_base. */ | |
3288 | static int num = 0; | |
3289 | ||
3290 | /* The first command in the history which doesn't exist (i.e. one more | |
3291 | than the number of the last command). Relative to history_base. */ | |
3292 | int hist_len; | |
3293 | ||
3294 | extern HIST_ENTRY *history_get PARAMS ((int)); | |
3295 | ||
3296 | /* Print out some of the commands from the command history. */ | |
3297 | /* First determine the length of the history list. */ | |
3298 | hist_len = history_size; | |
3299 | for (offset = 0; offset < history_size; offset++) | |
3300 | { | |
3301 | if (!history_get (history_base + offset)) | |
3302 | { | |
3303 | hist_len = offset; | |
3304 | break; | |
3305 | } | |
3306 | } | |
3307 | ||
3308 | if (args) | |
3309 | { | |
3310 | if (args[0] == '+' && args[1] == '\0') | |
3311 | /* "info editing +" should print from the stored position. */ | |
3312 | ; | |
3313 | else | |
3314 | /* "info editing <exp>" should print around command number <exp>. */ | |
3315 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
3316 | } | |
3317 | /* "show commands" means print the last Hist_print commands. */ | |
3318 | else | |
3319 | { | |
3320 | num = hist_len - Hist_print; | |
3321 | } | |
3322 | ||
3323 | if (num < 0) | |
3324 | num = 0; | |
3325 | ||
3326 | /* If there are at least Hist_print commands, we want to display the last | |
3327 | Hist_print rather than, say, the last 6. */ | |
3328 | if (hist_len - num < Hist_print) | |
3329 | { | |
3330 | num = hist_len - Hist_print; | |
3331 | if (num < 0) | |
3332 | num = 0; | |
3333 | } | |
3334 | ||
3335 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
3336 | { | |
3337 | printf_filtered ("%5d %s\n", history_base + offset, | |
3338 | (history_get (history_base + offset))->line); | |
3339 | } | |
3340 | ||
3341 | /* The next command we want to display is the next one that we haven't | |
3342 | displayed yet. */ | |
3343 | num += Hist_print; | |
3344 | ||
3345 | /* If the user repeats this command with return, it should do what | |
3346 | "show commands +" does. This is unnecessary if arg is null, | |
3347 | because "show commands +" is not useful after "show commands". */ | |
3348 | if (from_tty && args) | |
3349 | { | |
3350 | args[0] = '+'; | |
3351 | args[1] = '\0'; | |
3352 | } | |
3353 | } | |
3354 | ||
3355 | /* Called by do_setshow_command. */ | |
3356 | /* ARGSUSED */ | |
3357 | static void | |
3358 | set_history_size_command (args, from_tty, c) | |
3359 | char *args; | |
3360 | int from_tty; | |
3361 | struct cmd_list_element *c; | |
3362 | { | |
3363 | if (history_size == INT_MAX) | |
3364 | unstifle_history (); | |
3365 | else if (history_size >= 0) | |
3366 | stifle_history (history_size); | |
3367 | else | |
3368 | { | |
3369 | history_size = INT_MAX; | |
3370 | error ("History size must be non-negative"); | |
3371 | } | |
3372 | } | |
3373 | ||
3374 | /* ARGSUSED */ | |
3375 | static void | |
3376 | set_history (args, from_tty) | |
3377 | char *args; | |
3378 | int from_tty; | |
3379 | { | |
3380 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
3381 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
3382 | } | |
3383 | ||
3384 | /* ARGSUSED */ | |
3385 | static void | |
3386 | show_history (args, from_tty) | |
3387 | char *args; | |
3388 | int from_tty; | |
3389 | { | |
3390 | cmd_show_list (showhistlist, from_tty, ""); | |
3391 | } | |
3392 | ||
3393 | int info_verbose = 0; /* Default verbose msgs off */ | |
3394 | ||
3395 | /* Called by do_setshow_command. An elaborate joke. */ | |
3396 | /* ARGSUSED */ | |
3397 | static void | |
3398 | set_verbose (args, from_tty, c) | |
3399 | char *args; | |
3400 | int from_tty; | |
3401 | struct cmd_list_element *c; | |
3402 | { | |
3403 | char *cmdname = "verbose"; | |
3404 | struct cmd_list_element *showcmd; | |
3405 | ||
3406 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
3407 | ||
3408 | if (info_verbose) | |
3409 | { | |
3410 | c->doc = "Set verbose printing of informational messages."; | |
3411 | showcmd->doc = "Show verbose printing of informational messages."; | |
3412 | } | |
3413 | else | |
3414 | { | |
3415 | c->doc = "Set verbosity."; | |
3416 | showcmd->doc = "Show verbosity."; | |
3417 | } | |
3418 | } | |
3419 | ||
3420 | static void | |
3421 | float_handler (signo) | |
3422 | int signo; | |
3423 | { | |
3424 | /* This message is based on ANSI C, section 4.7. Note that integer | |
3425 | divide by zero causes this, so "float" is a misnomer. */ | |
3426 | signal (SIGFPE, float_handler); | |
3427 | error ("Erroneous arithmetic operation."); | |
3428 | } | |
3429 | ||
3430 | \f | |
3431 | static void | |
3432 | init_cmd_lists () | |
3433 | { | |
3434 | cmdlist = NULL; | |
3435 | infolist = NULL; | |
3436 | enablelist = NULL; | |
3437 | disablelist = NULL; | |
3438 | togglelist = NULL; | |
3439 | stoplist = NULL; | |
3440 | deletelist = NULL; | |
3441 | enablebreaklist = NULL; | |
3442 | setlist = NULL; | |
3443 | unsetlist = NULL; | |
3444 | showlist = NULL; | |
3445 | sethistlist = NULL; | |
3446 | showhistlist = NULL; | |
3447 | unsethistlist = NULL; | |
c906108c SS |
3448 | maintenancelist = NULL; |
3449 | maintenanceinfolist = NULL; | |
3450 | maintenanceprintlist = NULL; | |
c906108c SS |
3451 | setprintlist = NULL; |
3452 | showprintlist = NULL; | |
3453 | setchecklist = NULL; | |
3454 | showchecklist = NULL; | |
3455 | } | |
3456 | ||
3457 | /* Init the history buffer. Note that we are called after the init file(s) | |
3458 | * have been read so that the user can change the history file via his | |
3459 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
3460 | * overrides all of this. | |
3461 | */ | |
3462 | ||
3463 | void | |
3464 | init_history() | |
3465 | { | |
3466 | char *tmpenv; | |
3467 | ||
3468 | tmpenv = getenv ("HISTSIZE"); | |
3469 | if (tmpenv) | |
3470 | history_size = atoi (tmpenv); | |
3471 | else if (!history_size) | |
3472 | history_size = 256; | |
3473 | ||
3474 | stifle_history (history_size); | |
3475 | ||
3476 | tmpenv = getenv ("GDBHISTFILE"); | |
3477 | if (tmpenv) | |
3478 | history_filename = savestring (tmpenv, strlen(tmpenv)); | |
3479 | else if (!history_filename) { | |
3480 | /* We include the current directory so that if the user changes | |
3481 | directories the file written will be the same as the one | |
3482 | that was read. */ | |
3483 | history_filename = concat (current_directory, "/.gdb_history", NULL); | |
3484 | } | |
3485 | read_history (history_filename); | |
3486 | } | |
3487 | ||
3488 | static void | |
3489 | init_main () | |
3490 | { | |
3491 | struct cmd_list_element *c; | |
3492 | ||
cd0fc7c3 SS |
3493 | /* from event-top.c */ |
3494 | extern int async_command_editing_p; | |
3495 | extern struct prompts the_prompts; | |
3496 | extern char *async_annotation_suffix; | |
3497 | extern char *new_async_prompt; | |
3498 | ||
3499 | /* If we are running the asynchronous version, | |
3500 | we initialize the prompts differently. */ | |
3501 | if (!async_hook) | |
3502 | { | |
c906108c | 3503 | #ifdef DEFAULT_PROMPT |
cd0fc7c3 | 3504 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); |
c906108c | 3505 | #else |
cd0fc7c3 | 3506 | prompt = savestring ("(gdb) ", 6); |
c906108c | 3507 | #endif |
cd0fc7c3 SS |
3508 | } |
3509 | else | |
3510 | { | |
3511 | /* initialize the prompt stack to a simple "(gdb) " prompt or to | |
3512 | whatever the DEFULAT_PROMPT is. */ | |
3513 | the_prompts.top = 0; | |
3514 | PREFIX(0) = ""; | |
3515 | #ifdef DEFAULT_PROMPT | |
3516 | PROMPT(0) = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
3517 | #else | |
3518 | PROMPT(0) = savestring ("(gdb) ", 6); | |
3519 | #endif | |
3520 | SUFFIX(0) = ""; | |
3521 | /* Set things up for annotation_level > 1, if the user ever decides | |
3522 | to use it. */ | |
3523 | async_annotation_suffix = "prompt"; | |
3524 | /* Set the variable associated with the setshow prompt command. */ | |
3525 | new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0))); | |
3526 | } | |
c906108c SS |
3527 | |
3528 | /* Set the important stuff up for command editing. */ | |
3529 | command_editing_p = 1; | |
cd0fc7c3 | 3530 | async_command_editing_p = 1; |
c906108c SS |
3531 | history_expansion_p = 0; |
3532 | write_history_p = 0; | |
3533 | ||
3534 | /* Setup important stuff for command line editing. */ | |
3535 | rl_completion_entry_function = (int (*)()) readline_line_completion_function; | |
3536 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
3537 | rl_completer_quote_characters = gdb_completer_quote_characters; | |
3538 | rl_readline_name = "gdb"; | |
3539 | ||
3540 | /* Define the classes of commands. | |
3541 | They will appear in the help list in the reverse of this order. */ | |
3542 | ||
3543 | add_cmd ("internals", class_maintenance, NO_FUNCTION, | |
3544 | "Maintenance commands.\n\ | |
3545 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
3546 | These commands are subject to frequent change, and may not be as\n\ | |
3547 | well documented as user commands.", | |
3548 | &cmdlist); | |
3549 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); | |
3550 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
3551 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
3552 | The commands in this class are those defined by the user.\n\ | |
3553 | Use the \"define\" command to define a command.", &cmdlist); | |
3554 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
3555 | if (!dbx_commands) | |
3556 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
3557 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
3558 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
3559 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
3560 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
3561 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
3562 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
3563 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
3564 | Variable lookups are done with respect to the selected frame.\n\ | |
3565 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
3566 | The commands below can be used to select other frames by number or address.", | |
3567 | &cmdlist); | |
3568 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
3569 | ||
3570 | add_com ("pwd", class_files, pwd_command, | |
3571 | "Print working directory. This is used for your program as well."); | |
3572 | c = add_cmd ("cd", class_files, cd_command, | |
3573 | "Set working directory to DIR for debugger and program being debugged.\n\ | |
3574 | The change does not take effect for the program being debugged\n\ | |
3575 | until the next time it is started.", &cmdlist); | |
3576 | c->completer = filename_completer; | |
3577 | ||
cd0fc7c3 SS |
3578 | /* The set prompt command is different depending whether or not the |
3579 | async version is run. NOTE: this difference is going to | |
3580 | disappear as we make the event loop be the default engine of | |
3581 | gdb. */ | |
3582 | if (!async_hook) | |
3583 | { | |
3584 | add_show_from_set | |
3585 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
3586 | "Set gdb's prompt", | |
3587 | &setlist), | |
3588 | &showlist); | |
3589 | } | |
3590 | else | |
3591 | { | |
3592 | c = add_set_cmd ("prompt", class_support, var_string, | |
3593 | (char *)&new_async_prompt, | |
3594 | "Set gdb's prompt", | |
3595 | &setlist); | |
3596 | add_show_from_set (c, &showlist); | |
3597 | c->function.sfunc = set_async_prompt; | |
3598 | } | |
c906108c SS |
3599 | |
3600 | add_com ("echo", class_support, echo_command, | |
3601 | "Print a constant string. Give string as argument.\n\ | |
3602 | C escape sequences may be used in the argument.\n\ | |
3603 | No newline is added at the end of the argument;\n\ | |
3604 | use \"\\n\" if you want a newline to be printed.\n\ | |
3605 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
3606 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
3607 | to be printed or after trailing whitespace."); | |
3608 | add_com ("document", class_support, document_command, | |
3609 | "Document a user-defined command.\n\ | |
3610 | Give command name as argument. Give documentation on following lines.\n\ | |
3611 | End with a line of just \"end\"."); | |
3612 | add_com ("define", class_support, define_command, | |
3613 | "Define a new command name. Command name is argument.\n\ | |
3614 | Definition appears on following lines, one command per line.\n\ | |
3615 | End with a line of just \"end\".\n\ | |
3616 | Use the \"document\" command to give documentation for the new command.\n\ | |
3617 | Commands defined in this way may have up to ten arguments."); | |
3618 | ||
3619 | #ifdef __STDC__ | |
3620 | c = add_cmd ("source", class_support, source_command, | |
3621 | "Read commands from a file named FILE.\n\ | |
3622 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
3623 | when gdb is started.", &cmdlist); | |
3624 | #else | |
3625 | /* Punt file name, we can't help it easily. */ | |
3626 | c = add_cmd ("source", class_support, source_command, | |
3627 | "Read commands from a file named FILE.\n\ | |
3628 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
3629 | when gdb is started.", &cmdlist); | |
3630 | #endif | |
3631 | c->completer = filename_completer; | |
3632 | ||
3633 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
3634 | add_com ("help", class_support, help_command, "Print list of commands."); | |
3635 | add_com_alias ("q", "quit", class_support, 1); | |
3636 | add_com_alias ("h", "help", class_support, 1); | |
3637 | ||
3638 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ | |
3639 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
3640 | hitting return."); | |
3641 | ||
3642 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
3643 | "Set ", | |
3644 | &setlist), | |
3645 | add_show_from_set (c, &showlist); | |
3646 | c->function.sfunc = set_verbose; | |
3647 | set_verbose (NULL, 0, c); | |
3648 | ||
cd0fc7c3 SS |
3649 | /* The set editing command is different depending whether or not the |
3650 | async version is run. NOTE: this difference is going to disappear | |
3651 | as we make the event loop be the default engine of gdb. */ | |
3652 | if (!async_hook) | |
3653 | { | |
3654 | add_show_from_set | |
3655 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
3656 | "Set editing of command lines as they are typed.\n\ | |
c906108c SS |
3657 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
3658 | Without an argument, command line editing is enabled. To edit, use\n\ | |
3659 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
cd0fc7c3 SS |
3660 | &showlist); |
3661 | } | |
3662 | else | |
3663 | { | |
3664 | c = add_set_cmd ("editing", class_support, var_boolean, (char *)&async_command_editing_p, | |
3665 | "Set editing of command lines as they are typed.\n\ | |
3666 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
3667 | Without an argument, command line editing is enabled. To edit, use\n\ | |
3668 | EMACS-like or VI-like commands like control-P or ESC.", &setlist); | |
3669 | ||
3670 | add_show_from_set (c, &showlist); | |
3671 | c->function.sfunc = set_async_editing_command; | |
3672 | } | |
c906108c SS |
3673 | |
3674 | add_prefix_cmd ("history", class_support, set_history, | |
3675 | "Generic command for setting command history parameters.", | |
3676 | &sethistlist, "set history ", 0, &setlist); | |
3677 | add_prefix_cmd ("history", class_support, show_history, | |
3678 | "Generic command for showing command history parameters.", | |
3679 | &showhistlist, "show history ", 0, &showlist); | |
3680 | ||
3681 | add_show_from_set | |
3682 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
3683 | "Set history expansion on command input.\n\ | |
3684 | Without an argument, history expansion is enabled.", &sethistlist), | |
3685 | &showhistlist); | |
3686 | ||
3687 | add_show_from_set | |
3688 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, | |
3689 | "Set saving of the history record on exit.\n\ | |
3690 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ | |
3691 | Without an argument, saving is enabled.", &sethistlist), | |
3692 | &showhistlist); | |
3693 | ||
3694 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, | |
3695 | "Set the size of the command history, \n\ | |
3696 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
3697 | add_show_from_set (c, &showhistlist); | |
3698 | c->function.sfunc = set_history_size_command; | |
3699 | ||
3700 | add_show_from_set | |
3701 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
3702 | "Set the filename in which to record the command history\n\ | |
3703 | (the list of previous commands of which a record is kept).", &sethistlist), | |
3704 | &showhistlist); | |
3705 | ||
3706 | add_show_from_set | |
3707 | (add_set_cmd ("confirm", class_support, var_boolean, | |
3708 | (char *)&caution, | |
3709 | "Set whether to confirm potentially dangerous operations.", | |
3710 | &setlist), | |
3711 | &showlist); | |
3712 | ||
3713 | add_prefix_cmd ("info", class_info, info_command, | |
3714 | "Generic command for showing things about the program being debugged.", | |
3715 | &infolist, "info ", 0, &cmdlist); | |
3716 | add_com_alias ("i", "info", class_info, 1); | |
3717 | ||
3718 | add_com ("complete", class_obscure, complete_command, | |
3719 | "List the completions for the rest of the line as a command."); | |
3720 | ||
3721 | add_prefix_cmd ("show", class_info, show_command, | |
3722 | "Generic command for showing things about the debugger.", | |
3723 | &showlist, "show ", 0, &cmdlist); | |
3724 | /* Another way to get at the same thing. */ | |
3725 | add_info ("set", show_command, "Show all GDB settings."); | |
3726 | ||
3727 | add_cmd ("commands", no_class, show_commands, | |
3728 | "Show the history of commands you typed.\n\ | |
3729 | You can supply a command number to start with, or a `+' to start after\n\ | |
3730 | the previous command number shown.", | |
3731 | &showlist); | |
3732 | ||
3733 | add_cmd ("version", no_class, show_version, | |
3734 | "Show what version of GDB this is.", &showlist); | |
3735 | ||
3736 | add_com ("while", class_support, while_command, | |
3737 | "Execute nested commands WHILE the conditional expression is non zero.\n\ | |
3738 | The conditional expression must follow the word `while' and must in turn be\n\ | |
3739 | followed by a new line. The nested commands must be entered one per line,\n\ | |
3740 | and should be terminated by the word `end'."); | |
3741 | ||
3742 | add_com ("if", class_support, if_command, | |
3743 | "Execute nested commands once IF the conditional expression is non zero.\n\ | |
3744 | The conditional expression must follow the word `if' and must in turn be\n\ | |
3745 | followed by a new line. The nested commands must be entered one per line,\n\ | |
3746 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
3747 | is used, the same rules apply to its nested commands as to the first ones."); | |
3748 | ||
3749 | /* If target is open when baud changes, it doesn't take effect until the | |
3750 | next open (I think, not sure). */ | |
3751 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
3752 | var_zinteger, (char *)&baud_rate, | |
3753 | "Set baud rate for remote serial I/O.\n\ | |
3754 | This value is used to set the speed of the serial port when debugging\n\ | |
3755 | using remote targets.", &setlist), | |
3756 | &showlist); | |
3757 | ||
3758 | add_show_from_set ( | |
3759 | add_set_cmd ("remotedebug", no_class, var_zinteger, (char *)&remote_debug, | |
3760 | "Set debugging of remote protocol.\n\ | |
3761 | When enabled, each packet sent or received with the remote target\n\ | |
3762 | is displayed.", &setlist), | |
3763 | &showlist); | |
3764 | ||
3765 | add_show_from_set ( | |
3766 | add_set_cmd ("remotetimeout", no_class, var_integer, (char *)&remote_timeout, | |
3767 | "Set timeout limit to wait for target to respond.\n\ | |
3768 | This value is used to set the time limit for gdb to wait for a response\n\ | |
3769 | from the target.", &setlist), | |
3770 | &showlist); | |
3771 | ||
cd0fc7c3 SS |
3772 | /* The set annotate command is different depending whether or not |
3773 | the async version is run. NOTE: this difference is going to | |
3774 | disappear as we make the event loop be the default engine of | |
3775 | gdb. */ | |
3776 | if (!async_hook) | |
3777 | { | |
3778 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, | |
3779 | (char *)&annotation_level, "Set annotation_level.\n\ | |
c906108c SS |
3780 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
3781 | 2 == output annotated suitably for use by programs that control GDB.", | |
cd0fc7c3 SS |
3782 | &setlist); |
3783 | c = add_show_from_set (c, &showlist); | |
3784 | } | |
3785 | else | |
3786 | { | |
3787 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, | |
3788 | (char *)&annotation_level, "Set annotation_level.\n\ | |
3789 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ | |
3790 | 2 == output annotated suitably for use by programs that control GDB.", | |
3791 | &setlist); | |
3792 | add_show_from_set (c, &showlist); | |
3793 | c->function.sfunc = set_async_annotation_level; | |
3794 | } | |
c906108c | 3795 | } |