Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
085dd6e6 | 2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 |
c906108c SS |
3 | Free Software Foundation, Inc. |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
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, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "gdbcmd.h" | |
24 | #include "call-cmds.h" | |
25 | #include "symtab.h" | |
26 | #include "inferior.h" | |
27 | #include "signals.h" | |
28 | #include "target.h" | |
29 | #include "breakpoint.h" | |
30 | #include "gdbtypes.h" | |
31 | #include "expression.h" | |
32 | #include "value.h" | |
33 | #include "language.h" | |
c5aa993b | 34 | #include "terminal.h" /* For job_control. */ |
c906108c | 35 | #include "annotate.h" |
c906108c | 36 | #include "top.h" |
d4f3574e | 37 | #include "version.h" |
c906108c SS |
38 | |
39 | /* readline include files */ | |
40 | #include <readline/readline.h> | |
41 | #include <readline/history.h> | |
42 | ||
43 | /* readline defines this. */ | |
44 | #undef savestring | |
45 | ||
46 | #include <sys/types.h> | |
c906108c | 47 | |
c4093a6a | 48 | #include <setjmp.h> |
2acceee2 | 49 | |
c2c6d25f | 50 | #include "event-top.h" |
c906108c SS |
51 | #include "gdb_string.h" |
52 | #include "gdb_stat.h" | |
53 | #include <ctype.h> | |
54 | ||
c906108c SS |
55 | /* Prototypes for local functions */ |
56 | ||
57 | static void dont_repeat_command PARAMS ((char *, int)); | |
58 | ||
59 | static void source_cleanup_lines PARAMS ((PTR)); | |
60 | ||
61 | static void user_defined_command PARAMS ((char *, int)); | |
62 | ||
63 | static void init_signals PARAMS ((void)); | |
64 | ||
65 | #ifdef STOP_SIGNAL | |
66 | static void stop_sig PARAMS ((int)); | |
67 | #endif | |
68 | ||
c5aa993b | 69 | static char *line_completion_function PARAMS ((char *, int, char *, int)); |
c906108c | 70 | |
c5aa993b | 71 | static char *readline_line_completion_function PARAMS ((char *, int)); |
c906108c | 72 | |
392a587b | 73 | /* NOTE 1999-04-29: this function will be static again, after we make the |
cd0fc7c3 SS |
74 | event loop be the default command loop for gdb, and we merge |
75 | event-top.c into this file, top.c */ | |
76 | /* static */ void command_loop_marker PARAMS ((int)); | |
77 | ||
c906108c SS |
78 | static void while_command PARAMS ((char *, int)); |
79 | ||
80 | static void if_command PARAMS ((char *, int)); | |
81 | ||
82 | static struct command_line * | |
c5aa993b | 83 | build_command_line PARAMS ((enum command_control_type, char *)); |
c906108c SS |
84 | |
85 | static struct command_line * | |
c5aa993b | 86 | get_command_line PARAMS ((enum command_control_type, char *)); |
c906108c SS |
87 | |
88 | static void realloc_body_list PARAMS ((struct command_line *, int)); | |
89 | ||
90 | static enum misc_command_type read_next_line PARAMS ((struct command_line **)); | |
91 | ||
92 | static enum command_control_type | |
93 | recurse_read_control_structure PARAMS ((struct command_line *)); | |
94 | ||
c5aa993b | 95 | static struct cleanup *setup_user_args PARAMS ((char *)); |
c906108c | 96 | |
c5aa993b | 97 | static char *locate_arg PARAMS ((char *)); |
c906108c | 98 | |
c5aa993b | 99 | static char *insert_args PARAMS ((char *)); |
c906108c SS |
100 | |
101 | static void arg_cleanup PARAMS ((void)); | |
102 | ||
103 | static void init_main PARAMS ((void)); | |
104 | ||
105 | static void init_cmd_lists PARAMS ((void)); | |
106 | ||
107 | static void float_handler PARAMS ((int)); | |
108 | ||
109 | static void init_signals PARAMS ((void)); | |
110 | ||
111 | static void set_verbose PARAMS ((char *, int, struct cmd_list_element *)); | |
112 | ||
113 | static void show_history PARAMS ((char *, int)); | |
114 | ||
115 | static void set_history PARAMS ((char *, int)); | |
116 | ||
117 | static void set_history_size_command PARAMS ((char *, int, | |
118 | struct cmd_list_element *)); | |
119 | ||
120 | static void show_commands PARAMS ((char *, int)); | |
121 | ||
122 | static void echo_command PARAMS ((char *, int)); | |
123 | ||
124 | static void pwd_command PARAMS ((char *, int)); | |
125 | ||
126 | static void show_version PARAMS ((char *, int)); | |
127 | ||
128 | static void document_command PARAMS ((char *, int)); | |
129 | ||
130 | static void define_command PARAMS ((char *, int)); | |
131 | ||
132 | static void validate_comname PARAMS ((char *)); | |
133 | ||
134 | static void help_command PARAMS ((char *, int)); | |
135 | ||
136 | static void show_command PARAMS ((char *, int)); | |
137 | ||
138 | static void info_command PARAMS ((char *, int)); | |
139 | ||
140 | static void complete_command PARAMS ((char *, int)); | |
141 | ||
142 | static void do_nothing PARAMS ((int)); | |
143 | ||
144 | #ifdef SIGHUP | |
392a587b | 145 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
146 | gdb to use the event loop as the default command loop and we merge |
147 | event-top.c into this file, top.c */ | |
148 | /* static */ int quit_cover PARAMS ((PTR)); | |
c906108c SS |
149 | |
150 | static void disconnect PARAMS ((int)); | |
151 | #endif | |
152 | ||
153 | static void source_cleanup PARAMS ((FILE *)); | |
154 | ||
104c1213 JM |
155 | /* Default command line prompt. This is overriden in some configs. */ |
156 | ||
157 | #ifndef DEFAULT_PROMPT | |
158 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
159 | #endif |
160 | ||
161 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
162 | ||
163 | #ifndef GDBINIT_FILENAME | |
164 | #define GDBINIT_FILENAME ".gdbinit" | |
165 | #endif | |
166 | char gdbinit[] = GDBINIT_FILENAME; | |
167 | ||
168 | int inhibit_gdbinit = 0; | |
169 | ||
170 | /* If nonzero, and GDB has been configured to be able to use windows, | |
171 | attempt to open them upon startup. */ | |
172 | ||
173 | int use_windows = 1; | |
174 | ||
c906108c SS |
175 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
176 | ||
177 | /* Flag for whether we want all the "from_tty" gubbish printed. */ | |
178 | ||
c5aa993b | 179 | int caution = 1; /* Default is yes, sigh. */ |
c906108c SS |
180 | |
181 | /* Define all cmd_list_elements. */ | |
182 | ||
183 | /* Chain containing all defined commands. */ | |
184 | ||
185 | struct cmd_list_element *cmdlist; | |
186 | ||
187 | /* Chain containing all defined info subcommands. */ | |
188 | ||
189 | struct cmd_list_element *infolist; | |
190 | ||
191 | /* Chain containing all defined enable subcommands. */ | |
192 | ||
193 | struct cmd_list_element *enablelist; | |
194 | ||
195 | /* Chain containing all defined disable subcommands. */ | |
196 | ||
197 | struct cmd_list_element *disablelist; | |
198 | ||
199 | /* Chain containing all defined toggle subcommands. */ | |
200 | ||
201 | struct cmd_list_element *togglelist; | |
202 | ||
203 | /* Chain containing all defined stop subcommands. */ | |
204 | ||
205 | struct cmd_list_element *stoplist; | |
206 | ||
207 | /* Chain containing all defined delete subcommands. */ | |
208 | ||
209 | struct cmd_list_element *deletelist; | |
210 | ||
211 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
212 | ||
213 | struct cmd_list_element *enablebreaklist; | |
214 | ||
215 | /* Chain containing all defined set subcommands */ | |
216 | ||
217 | struct cmd_list_element *setlist; | |
218 | ||
219 | /* Chain containing all defined unset subcommands */ | |
220 | ||
221 | struct cmd_list_element *unsetlist; | |
222 | ||
223 | /* Chain containing all defined show subcommands. */ | |
224 | ||
225 | struct cmd_list_element *showlist; | |
226 | ||
227 | /* Chain containing all defined \"set history\". */ | |
228 | ||
229 | struct cmd_list_element *sethistlist; | |
230 | ||
231 | /* Chain containing all defined \"show history\". */ | |
232 | ||
233 | struct cmd_list_element *showhistlist; | |
234 | ||
235 | /* Chain containing all defined \"unset history\". */ | |
236 | ||
237 | struct cmd_list_element *unsethistlist; | |
238 | ||
239 | /* Chain containing all defined maintenance subcommands. */ | |
240 | ||
c906108c | 241 | struct cmd_list_element *maintenancelist; |
c906108c SS |
242 | |
243 | /* Chain containing all defined "maintenance info" subcommands. */ | |
244 | ||
c906108c | 245 | struct cmd_list_element *maintenanceinfolist; |
c906108c SS |
246 | |
247 | /* Chain containing all defined "maintenance print" subcommands. */ | |
248 | ||
c906108c | 249 | struct cmd_list_element *maintenanceprintlist; |
c906108c SS |
250 | |
251 | struct cmd_list_element *setprintlist; | |
252 | ||
253 | struct cmd_list_element *showprintlist; | |
254 | ||
255 | struct cmd_list_element *setchecklist; | |
256 | ||
257 | struct cmd_list_element *showchecklist; | |
258 | ||
259 | /* stdio stream that command input is being read from. Set to stdin normally. | |
260 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
261 | executing a user-defined command or interacting via a GUI. */ | |
262 | ||
263 | FILE *instream; | |
264 | ||
265 | /* Current working directory. */ | |
266 | ||
267 | char *current_directory; | |
268 | ||
269 | /* The directory name is actually stored here (usually). */ | |
270 | char gdb_dirbuf[1024]; | |
271 | ||
272 | /* Function to call before reading a command, if nonzero. | |
273 | The function receives two args: an input stream, | |
274 | and a prompt string. */ | |
275 | ||
276 | void (*window_hook) PARAMS ((FILE *, char *)); | |
277 | ||
278 | int epoch_interface; | |
279 | int xgdb_verbose; | |
280 | ||
281 | /* gdb prints this when reading a command interactively */ | |
c5aa993b JM |
282 | static char *gdb_prompt_string; /* the global prompt string */ |
283 | extern char *get_prompt PARAMS ((void)); /* access function for prompt string */ | |
c906108c SS |
284 | |
285 | /* Buffer used for reading command lines, and the size | |
286 | allocated for it so far. */ | |
287 | ||
288 | char *line; | |
289 | int linesize = 100; | |
290 | ||
291 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 292 | affects things like recording into the command history, commands |
c906108c SS |
293 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
294 | whatever) can issue its own commands and also send along commands | |
295 | from the user, and have the user not notice that the user interface | |
296 | is issuing commands too. */ | |
297 | int server_command; | |
298 | ||
299 | /* Baud rate specified for talking to serial target systems. Default | |
300 | is left as -1, so targets can choose their own defaults. */ | |
301 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 | |
302 | or (unsigned int)-1. This is a Bad User Interface. */ | |
303 | ||
304 | int baud_rate = -1; | |
305 | ||
306 | /* Timeout limit for response from target. */ | |
307 | ||
308 | int remote_timeout = 20; /* Set default to 20 */ | |
309 | ||
310 | /* Non-zero tells remote* modules to output debugging info. */ | |
311 | ||
312 | int remote_debug = 0; | |
313 | ||
43ff13b4 JM |
314 | /* Non-zero means the target is running. Note: this is different from |
315 | saying that there is an active target and we are stopped at a | |
316 | breakpoint, for instance. This is a real indicator whether the | |
317 | target is off and running, which gdb is doing something else. */ | |
318 | int target_executing = 0; | |
319 | ||
c906108c SS |
320 | /* Level of control structure. */ |
321 | static int control_level; | |
322 | ||
323 | /* Structure for arguments to user defined functions. */ | |
324 | #define MAXUSERARGS 10 | |
325 | struct user_args | |
c5aa993b JM |
326 | { |
327 | struct user_args *next; | |
328 | struct | |
329 | { | |
330 | char *arg; | |
331 | int len; | |
332 | } | |
333 | a[MAXUSERARGS]; | |
334 | int count; | |
335 | } | |
336 | *user_args; | |
c906108c SS |
337 | |
338 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
339 | ||
340 | #ifndef STOP_SIGNAL | |
341 | #ifdef SIGTSTP | |
342 | #define STOP_SIGNAL SIGTSTP | |
343 | static void stop_sig PARAMS ((int)); | |
344 | #endif | |
345 | #endif | |
346 | ||
347 | /* Some System V have job control but not sigsetmask(). */ | |
348 | #if !defined (HAVE_SIGSETMASK) | |
349 | #if !defined (USG) | |
350 | #define HAVE_SIGSETMASK 1 | |
351 | #else | |
352 | #define HAVE_SIGSETMASK 0 | |
353 | #endif | |
354 | #endif | |
355 | ||
356 | #if 0 == (HAVE_SIGSETMASK) | |
357 | #define sigsetmask(n) | |
358 | #endif | |
359 | ||
360 | /* Hooks for alternate command interfaces. */ | |
361 | ||
362 | /* Called after most modules have been initialized, but before taking users | |
363 | command file. */ | |
364 | ||
365 | void (*init_ui_hook) PARAMS ((char *argv0)); | |
7a292a7a SS |
366 | |
367 | /* This hook is called from within gdb's many mini-event loops which could | |
368 | steal control from a real user interface's event loop. It returns | |
369 | non-zero if the user is requesting a detach, zero otherwise. */ | |
370 | ||
371 | int (*ui_loop_hook) PARAMS ((int)); | |
c906108c SS |
372 | |
373 | /* Called instead of command_loop at top level. Can be invoked via | |
374 | return_to_top_level. */ | |
375 | ||
376 | void (*command_loop_hook) PARAMS ((void)); | |
377 | ||
378 | ||
c906108c SS |
379 | /* Called from print_frame_info to list the line we stopped in. */ |
380 | ||
c5aa993b | 381 | void (*print_frame_info_listing_hook) PARAMS ((struct symtab * s, int line, |
c906108c SS |
382 | int stopline, int noerror)); |
383 | /* Replaces most of query. */ | |
384 | ||
385 | int (*query_hook) PARAMS ((const char *, va_list)); | |
386 | ||
387 | /* Replaces most of warning. */ | |
388 | ||
389 | void (*warning_hook) PARAMS ((const char *, va_list)); | |
390 | ||
c906108c SS |
391 | /* These three functions support getting lines of text from the user. They |
392 | are used in sequence. First readline_begin_hook is called with a text | |
393 | string that might be (for example) a message for the user to type in a | |
394 | sequence of commands to be executed at a breakpoint. If this function | |
395 | calls back to a GUI, it might take this opportunity to pop up a text | |
396 | interaction window with this message. Next, readline_hook is called | |
397 | with a prompt that is emitted prior to collecting the user input. | |
398 | It can be called multiple times. Finally, readline_end_hook is called | |
399 | to notify the GUI that we are done with the interaction window and it | |
400 | can close it. */ | |
401 | ||
c5aa993b JM |
402 | void (*readline_begin_hook) PARAMS ((char *,...)); |
403 | char *(*readline_hook) PARAMS ((char *)); | |
c906108c SS |
404 | void (*readline_end_hook) PARAMS ((void)); |
405 | ||
406 | /* Called as appropriate to notify the interface of the specified breakpoint | |
407 | conditions. */ | |
408 | ||
c5aa993b JM |
409 | void (*create_breakpoint_hook) PARAMS ((struct breakpoint * bpt)); |
410 | void (*delete_breakpoint_hook) PARAMS ((struct breakpoint * bpt)); | |
411 | void (*modify_breakpoint_hook) PARAMS ((struct breakpoint * bpt)); | |
c906108c | 412 | |
6426a772 JM |
413 | /* Called as appropriate to notify the interface that we have attached |
414 | to or detached from an already running process. */ | |
415 | ||
416 | void (*attach_hook) PARAMS ((void)); | |
417 | void (*detach_hook) PARAMS ((void)); | |
418 | ||
c906108c SS |
419 | /* Called during long calculations to allow GUI to repair window damage, and to |
420 | check for stop buttons, etc... */ | |
421 | ||
422 | void (*interactive_hook) PARAMS ((void)); | |
423 | ||
424 | /* Called when the registers have changed, as a hint to a GUI | |
425 | to minimize window update. */ | |
426 | ||
427 | void (*registers_changed_hook) PARAMS ((void)); | |
428 | ||
429 | /* Tell the GUI someone changed the register REGNO. -1 means | |
430 | that the caller does not know which register changed or | |
c5aa993b | 431 | that several registers have changed (see value_assign). */ |
c906108c SS |
432 | void (*register_changed_hook) PARAMS ((int regno)); |
433 | ||
434 | /* Tell the GUI someone changed LEN bytes of memory at ADDR */ | |
435 | void (*memory_changed_hook) PARAMS ((CORE_ADDR addr, int len)); | |
436 | ||
437 | /* Called when going to wait for the target. Usually allows the GUI to run | |
438 | while waiting for target events. */ | |
439 | ||
c5aa993b | 440 | int (*target_wait_hook) PARAMS ((int pid, struct target_waitstatus * status)); |
c906108c SS |
441 | |
442 | /* Used by UI as a wrapper around command execution. May do various things | |
443 | like enabling/disabling buttons, etc... */ | |
444 | ||
c5aa993b | 445 | void (*call_command_hook) PARAMS ((struct cmd_list_element * c, char *cmd, |
c906108c SS |
446 | int from_tty)); |
447 | ||
96baa820 JM |
448 | /* Called after a `set' command has finished. Is only run if the |
449 | `set' command succeeded. */ | |
450 | ||
451 | void (*set_hook) PARAMS ((struct cmd_list_element *c)); | |
452 | ||
c906108c SS |
453 | /* Called when the current thread changes. Argument is thread id. */ |
454 | ||
455 | void (*context_hook) PARAMS ((int id)); | |
456 | ||
457 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
458 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
459 | ||
c5aa993b JM |
460 | NORETURN void (*error_hook) |
461 | PARAMS ((void)) ATTR_NORETURN; | |
c906108c | 462 | \f |
c5aa993b | 463 | |
c4093a6a JM |
464 | /* Generally one should use catch_errors rather than manipulating these |
465 | directly. The exception is main(). */ | |
466 | #if defined(HAVE_SIGSETJMP) | |
467 | #define SIGJMP_BUF sigjmp_buf | |
468 | #define SIGSETJMP(buf) sigsetjmp(buf, 1) | |
469 | #define SIGLONGJMP(buf,val) siglongjmp(buf,val) | |
470 | #else | |
471 | #define SIGJMP_BUF jmp_buf | |
472 | #define SIGSETJMP(buf) setjmp(buf) | |
473 | #define SIGLONGJMP(buf,val) longjmp(buf,val) | |
474 | #endif | |
475 | ||
c906108c | 476 | /* Where to go for return_to_top_level (RETURN_ERROR). */ |
c4093a6a | 477 | static SIGJMP_BUF error_return; |
c906108c | 478 | /* Where to go for return_to_top_level (RETURN_QUIT). */ |
c4093a6a | 479 | static SIGJMP_BUF quit_return; |
c906108c SS |
480 | |
481 | /* Return for reason REASON. This generally gets back to the command | |
482 | loop, but can be caught via catch_errors. */ | |
483 | ||
c2d11a7d | 484 | NORETURN void |
6426a772 | 485 | return_to_top_level (reason) |
c906108c SS |
486 | enum return_reason reason; |
487 | { | |
488 | quit_flag = 0; | |
489 | immediate_quit = 0; | |
490 | ||
491 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
492 | I can think of a reason why that is vital, though). */ | |
c5aa993b | 493 | bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */ |
c906108c SS |
494 | |
495 | disable_current_display (); | |
496 | do_cleanups (ALL_CLEANUPS); | |
c4093a6a | 497 | if (event_loop_p && target_can_async_p () && !target_executing) |
43ff13b4 | 498 | do_exec_cleanups (ALL_CLEANUPS); |
6426a772 JM |
499 | if (event_loop_p && sync_execution) |
500 | do_exec_error_cleanups (ALL_CLEANUPS); | |
c906108c SS |
501 | |
502 | if (annotation_level > 1) | |
503 | switch (reason) | |
504 | { | |
505 | case RETURN_QUIT: | |
506 | annotate_quit (); | |
507 | break; | |
508 | case RETURN_ERROR: | |
509 | annotate_error (); | |
510 | break; | |
511 | } | |
512 | ||
513 | (NORETURN void) SIGLONGJMP | |
514 | (reason == RETURN_ERROR ? error_return : quit_return, 1); | |
515 | } | |
516 | ||
517 | /* Call FUNC with arg ARGS, catching any errors. If there is no | |
518 | error, return the value returned by FUNC. If there is an error, | |
519 | print ERRSTRING, print the specific error message, then return | |
520 | zero. | |
521 | ||
522 | Must not be called with immediate_quit in effect (bad things might | |
523 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
524 | This is an OK restriction; with very few exceptions immediate_quit can | |
525 | be replaced by judicious use of QUIT. | |
526 | ||
527 | MASK specifies what to catch; it is normally set to | |
528 | RETURN_MASK_ALL, if for no other reason than that the code which | |
529 | calls catch_errors might not be set up to deal with a quit which | |
530 | isn't caught. But if the code can deal with it, it generally | |
531 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
532 | useful to abort only the portion of the operation inside the | |
533 | catch_errors. Note that quit should return to the command line | |
534 | fairly quickly, even if some further processing is being done. */ | |
535 | ||
11cf8741 JM |
536 | /* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with |
537 | error() et.al. could maintain a set of flags that indicate the the | |
538 | current state of each of the longjmp buffers. This would give the | |
539 | longjmp code the chance to detect a longjmp botch (before it gets | |
540 | to longjmperror()). Prior to 1999-11-05 this wasn't possible as | |
541 | code also randomly used a SET_TOP_LEVEL macro that directly | |
542 | initialize the longjmp buffers. */ | |
543 | ||
544 | /* MAYBE: cagney/1999-11-05: Since the SET_TOP_LEVEL macro has been | |
545 | eliminated it is now possible to use the stack to directly store | |
546 | each longjmp buffer. The global code would just need to update a | |
547 | pointer (onto the stack - ulgh!?) indicating the current longjmp | |
548 | buffers. It would certainly improve the performance of the longjmp | |
549 | code since the memcpy's would be eliminated. */ | |
550 | ||
551 | /* MAYBE: cagney/1999-11-05: Should the catch_erros and cleanups code | |
552 | be consolidated into a single file instead of being distributed | |
553 | between utils.c and top.c? */ | |
554 | ||
c906108c SS |
555 | int |
556 | catch_errors (func, args, errstring, mask) | |
557 | catch_errors_ftype *func; | |
558 | PTR args; | |
559 | char *errstring; | |
560 | return_mask mask; | |
561 | { | |
562 | SIGJMP_BUF saved_error; | |
563 | SIGJMP_BUF saved_quit; | |
564 | SIGJMP_BUF tmp_jmp; | |
565 | int val; | |
566 | struct cleanup *saved_cleanup_chain; | |
567 | char *saved_error_pre_print; | |
568 | char *saved_quit_pre_print; | |
569 | ||
570 | saved_cleanup_chain = save_cleanups (); | |
571 | saved_error_pre_print = error_pre_print; | |
572 | saved_quit_pre_print = quit_pre_print; | |
573 | ||
574 | if (mask & RETURN_MASK_ERROR) | |
575 | { | |
c5aa993b | 576 | memcpy ((char *) saved_error, (char *) error_return, sizeof (SIGJMP_BUF)); |
c906108c SS |
577 | error_pre_print = errstring; |
578 | } | |
579 | if (mask & RETURN_MASK_QUIT) | |
580 | { | |
581 | memcpy (saved_quit, quit_return, sizeof (SIGJMP_BUF)); | |
582 | quit_pre_print = errstring; | |
583 | } | |
584 | ||
585 | if (SIGSETJMP (tmp_jmp) == 0) | |
586 | { | |
587 | if (mask & RETURN_MASK_ERROR) | |
588 | memcpy (error_return, tmp_jmp, sizeof (SIGJMP_BUF)); | |
589 | if (mask & RETURN_MASK_QUIT) | |
590 | memcpy (quit_return, tmp_jmp, sizeof (SIGJMP_BUF)); | |
591 | val = (*func) (args); | |
11cf8741 JM |
592 | /* FIXME: cagney/1999-11-05: A correct FUNC implementaton will |
593 | clean things up (restoring the cleanup chain) to the state | |
594 | they were just prior to the call. Technically, this means | |
595 | that the below restore_cleanups call is redundant. | |
596 | Unfortunatly, many FUNC's are not that well behaved. | |
597 | restore_cleanups should either be replaced with a do_cleanups | |
598 | call (to cover the problem) or an assertion check to detect | |
599 | bad FUNCs code. */ | |
c906108c SS |
600 | } |
601 | else | |
602 | val = 0; | |
603 | ||
604 | restore_cleanups (saved_cleanup_chain); | |
605 | ||
606 | if (mask & RETURN_MASK_ERROR) | |
607 | { | |
608 | memcpy (error_return, saved_error, sizeof (SIGJMP_BUF)); | |
609 | error_pre_print = saved_error_pre_print; | |
610 | } | |
611 | if (mask & RETURN_MASK_QUIT) | |
612 | { | |
613 | memcpy (quit_return, saved_quit, sizeof (SIGJMP_BUF)); | |
614 | quit_pre_print = saved_quit_pre_print; | |
615 | } | |
616 | return val; | |
617 | } | |
618 | ||
11cf8741 JM |
619 | struct captured_command_args |
620 | { | |
621 | catch_command_errors_ftype *command; | |
622 | char *arg; | |
623 | int from_tty; | |
624 | }; | |
625 | ||
626 | static int | |
627 | do_captured_command (void *data) | |
628 | { | |
629 | struct captured_command_args *context = data; | |
630 | context->command (context->arg, context->from_tty); | |
631 | /* FIXME: cagney/1999-11-07: Technically this do_cleanups() call | |
632 | isn't needed. Instead an assertion check could be made that | |
633 | simply confirmed that the called function correctly cleaned up | |
634 | after its self. Unfortunatly, old code (prior to 1999-11-04) in | |
635 | main.c was calling SET_TOP_LEVEL(), calling the command function, | |
636 | and then *always* calling do_cleanups(). For the moment we | |
637 | remain ``bug compatible'' with that old code.. */ | |
638 | do_cleanups (ALL_CLEANUPS); | |
639 | return 1; | |
640 | } | |
641 | ||
642 | int | |
643 | catch_command_errors (catch_command_errors_ftype *command, | |
644 | char *arg, int from_tty, return_mask mask) | |
645 | { | |
646 | struct captured_command_args args; | |
647 | args.command = command; | |
648 | args.arg = arg; | |
649 | args.from_tty = from_tty; | |
650 | return catch_errors (do_captured_command, &args, "", mask); | |
651 | } | |
652 | ||
653 | ||
c906108c SS |
654 | /* Handler for SIGHUP. */ |
655 | ||
656 | #ifdef SIGHUP | |
657 | static void | |
658 | disconnect (signo) | |
c5aa993b | 659 | int signo; |
c906108c SS |
660 | { |
661 | catch_errors (quit_cover, NULL, | |
c5aa993b | 662 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
c906108c SS |
663 | signal (SIGHUP, SIG_DFL); |
664 | kill (getpid (), SIGHUP); | |
665 | } | |
666 | ||
667 | /* Just a little helper function for disconnect(). */ | |
668 | ||
392a587b | 669 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
670 | gdb to use the event loop as the default command loop and we merge |
671 | event-top.c into this file, top.c */ | |
672 | /* static */ int | |
c906108c SS |
673 | quit_cover (s) |
674 | PTR s; | |
675 | { | |
c5aa993b JM |
676 | caution = 0; /* Throw caution to the wind -- we're exiting. |
677 | This prevents asking the user dumb questions. */ | |
678 | quit_command ((char *) 0, 0); | |
c906108c SS |
679 | return 0; |
680 | } | |
681 | #endif /* defined SIGHUP */ | |
682 | \f | |
683 | /* Line number we are currently in in a file which is being sourced. */ | |
392a587b | 684 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
685 | gdb to use the event loop as the default command loop and we merge |
686 | event-top.c into this file, top.c */ | |
687 | /* static */ int source_line_number; | |
c906108c SS |
688 | |
689 | /* Name of the file we are sourcing. */ | |
392a587b | 690 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
691 | gdb to use the event loop as the default command loop and we merge |
692 | event-top.c into this file, top.c */ | |
693 | /* static */ char *source_file_name; | |
c906108c SS |
694 | |
695 | /* Buffer containing the error_pre_print used by the source stuff. | |
696 | Malloc'd. */ | |
392a587b | 697 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
698 | gdb to use the event loop as the default command loop and we merge |
699 | event-top.c into this file, top.c */ | |
700 | /* static */ char *source_error; | |
c906108c SS |
701 | static int source_error_allocated; |
702 | ||
703 | /* Something to glom on to the start of error_pre_print if source_file_name | |
704 | is set. */ | |
392a587b | 705 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
706 | gdb to use the event loop as the default command loop and we merge |
707 | event-top.c into this file, top.c */ | |
708 | /* static */ char *source_pre_error; | |
c906108c SS |
709 | |
710 | /* Clean up on error during a "source" command (or execution of a | |
711 | user-defined command). */ | |
712 | ||
713 | static void | |
714 | source_cleanup (stream) | |
715 | FILE *stream; | |
716 | { | |
717 | /* Restore the previous input stream. */ | |
718 | instream = stream; | |
719 | } | |
720 | ||
721 | /* Read commands from STREAM. */ | |
722 | void | |
723 | read_command_file (stream) | |
724 | FILE *stream; | |
725 | { | |
726 | struct cleanup *cleanups; | |
727 | ||
728 | cleanups = make_cleanup ((make_cleanup_func) source_cleanup, instream); | |
729 | instream = stream; | |
c5aa993b | 730 | command_loop (); |
c906108c SS |
731 | do_cleanups (cleanups); |
732 | } | |
733 | \f | |
734 | extern void init_proc PARAMS ((void)); | |
735 | ||
736 | void (*pre_init_ui_hook) PARAMS ((void)); | |
737 | ||
738 | void | |
739 | gdb_init (argv0) | |
740 | char *argv0; | |
741 | { | |
742 | if (pre_init_ui_hook) | |
743 | pre_init_ui_hook (); | |
744 | ||
745 | /* Run the init function of each source file */ | |
746 | ||
747 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
748 | current_directory = gdb_dirbuf; | |
749 | ||
a0b3c4fd JM |
750 | #ifdef __MSDOS__ |
751 | /* Make sure we return to the original directory upon exit, come | |
752 | what may, since the OS doesn't do that for us. */ | |
753 | make_final_cleanup ((make_cleanup_func) chdir, strsave (current_directory)); | |
754 | #endif | |
755 | ||
c5aa993b JM |
756 | init_cmd_lists (); /* This needs to be done first */ |
757 | initialize_targets (); /* Setup target_terminal macros for utils.c */ | |
758 | initialize_utils (); /* Make errors and warnings possible */ | |
c906108c | 759 | initialize_all_files (); |
e514a9d6 | 760 | initialize_current_architecture (); |
c5aa993b | 761 | init_main (); /* But that omits this file! Do it now */ |
cd0fc7c3 SS |
762 | |
763 | /* The signal handling mechanism is different depending whether or | |
764 | not the async version is run. NOTE: in the future we plan to make | |
765 | the event loop be the default engine of gdb, and this difference | |
766 | will disappear. */ | |
6426a772 | 767 | if (event_loop_p) |
cd0fc7c3 SS |
768 | async_init_signals (); |
769 | else | |
c5aa993b | 770 | init_signals (); |
c906108c | 771 | |
c906108c SS |
772 | /* We need a default language for parsing expressions, so simple things like |
773 | "set width 0" won't fail if no language is explicitly set in a config file | |
774 | or implicitly set by reading an executable during startup. */ | |
775 | set_language (language_c); | |
c5aa993b | 776 | expected_language = current_language; /* don't warn about the change. */ |
c906108c | 777 | |
0f71a2f6 JM |
778 | /* All the interpreters should have had a look at things by now. |
779 | Initialize the selected interpreter. */ | |
c906108c SS |
780 | if (init_ui_hook) |
781 | init_ui_hook (argv0); | |
782 | } | |
783 | ||
784 | /* Allocate, initialize a new command line structure for one of the | |
785 | control commands (if/while). */ | |
786 | ||
787 | static struct command_line * | |
788 | build_command_line (type, args) | |
789 | enum command_control_type type; | |
790 | char *args; | |
791 | { | |
792 | struct command_line *cmd; | |
793 | ||
794 | if (args == NULL) | |
795 | error ("if/while commands require arguments.\n"); | |
796 | ||
c5aa993b | 797 | cmd = (struct command_line *) xmalloc (sizeof (struct command_line)); |
c906108c SS |
798 | cmd->next = NULL; |
799 | cmd->control_type = type; | |
800 | ||
801 | cmd->body_count = 1; | |
802 | cmd->body_list | |
c5aa993b JM |
803 | = (struct command_line **) xmalloc (sizeof (struct command_line *) |
804 | * cmd->body_count); | |
c906108c SS |
805 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); |
806 | cmd->line = savestring (args, strlen (args)); | |
807 | return cmd; | |
808 | } | |
809 | ||
810 | /* Build and return a new command structure for the control commands | |
811 | such as "if" and "while". */ | |
812 | ||
813 | static struct command_line * | |
814 | get_command_line (type, arg) | |
815 | enum command_control_type type; | |
816 | char *arg; | |
817 | { | |
818 | struct command_line *cmd; | |
819 | struct cleanup *old_chain = NULL; | |
820 | ||
821 | /* Allocate and build a new command line structure. */ | |
822 | cmd = build_command_line (type, arg); | |
823 | ||
824 | old_chain = make_cleanup ((make_cleanup_func) free_command_lines, &cmd); | |
825 | ||
826 | /* Read in the body of this command. */ | |
827 | if (recurse_read_control_structure (cmd) == invalid_control) | |
828 | { | |
829 | warning ("error reading in control structure\n"); | |
830 | do_cleanups (old_chain); | |
831 | return NULL; | |
832 | } | |
833 | ||
834 | discard_cleanups (old_chain); | |
835 | return cmd; | |
836 | } | |
837 | ||
838 | /* Recursively print a command (including full control structures). */ | |
839 | void | |
9e086581 | 840 | print_command_line (cmd, depth, stream) |
c906108c SS |
841 | struct command_line *cmd; |
842 | unsigned int depth; | |
9e086581 | 843 | GDB_FILE *stream; |
c906108c SS |
844 | { |
845 | unsigned int i; | |
846 | ||
847 | if (depth) | |
848 | { | |
849 | for (i = 0; i < depth; i++) | |
9e086581 | 850 | fputs_filtered (" ", stream); |
c906108c SS |
851 | } |
852 | ||
853 | /* A simple command, print it and return. */ | |
854 | if (cmd->control_type == simple_control) | |
855 | { | |
9e086581 JM |
856 | fputs_filtered (cmd->line, stream); |
857 | fputs_filtered ("\n", stream); | |
c906108c SS |
858 | return; |
859 | } | |
860 | ||
861 | /* loop_continue to jump to the start of a while loop, print it | |
862 | and return. */ | |
863 | if (cmd->control_type == continue_control) | |
864 | { | |
9e086581 | 865 | fputs_filtered ("loop_continue\n", stream); |
c906108c SS |
866 | return; |
867 | } | |
868 | ||
869 | /* loop_break to break out of a while loop, print it and return. */ | |
870 | if (cmd->control_type == break_control) | |
871 | { | |
9e086581 | 872 | fputs_filtered ("loop_break\n", stream); |
c906108c SS |
873 | return; |
874 | } | |
875 | ||
876 | /* A while command. Recursively print its subcommands before returning. */ | |
877 | if (cmd->control_type == while_control) | |
878 | { | |
879 | struct command_line *list; | |
9e086581 JM |
880 | fputs_filtered ("while ", stream); |
881 | fputs_filtered (cmd->line, stream); | |
882 | fputs_filtered ("\n", stream); | |
c906108c SS |
883 | list = *cmd->body_list; |
884 | while (list) | |
885 | { | |
9e086581 | 886 | print_command_line (list, depth + 1, stream); |
c906108c SS |
887 | list = list->next; |
888 | } | |
889 | } | |
890 | ||
891 | /* An if command. Recursively print both arms before returning. */ | |
892 | if (cmd->control_type == if_control) | |
893 | { | |
9e086581 JM |
894 | fputs_filtered ("if ", stream); |
895 | fputs_filtered (cmd->line, stream); | |
896 | fputs_filtered ("\n", stream); | |
c906108c | 897 | /* The true arm. */ |
9e086581 | 898 | print_command_line (cmd->body_list[0], depth + 1, stream); |
c906108c SS |
899 | |
900 | /* Show the false arm if it exists. */ | |
901 | if (cmd->body_count == 2) | |
c5aa993b JM |
902 | { |
903 | if (depth) | |
904 | { | |
905 | for (i = 0; i < depth; i++) | |
906 | fputs_filtered (" ", stream); | |
907 | } | |
908 | fputs_filtered ("else\n", stream); | |
909 | print_command_line (cmd->body_list[1], depth + 1, stream); | |
910 | } | |
c906108c SS |
911 | if (depth) |
912 | { | |
913 | for (i = 0; i < depth; i++) | |
9e086581 | 914 | fputs_filtered (" ", stream); |
c906108c | 915 | } |
9e086581 | 916 | fputs_filtered ("end\n", stream); |
c906108c SS |
917 | } |
918 | } | |
919 | ||
920 | /* Execute the command in CMD. */ | |
921 | ||
922 | enum command_control_type | |
923 | execute_control_command (cmd) | |
924 | struct command_line *cmd; | |
925 | { | |
926 | struct expression *expr; | |
927 | struct command_line *current; | |
928 | struct cleanup *old_chain = 0; | |
929 | value_ptr val; | |
930 | value_ptr val_mark; | |
931 | int loop; | |
932 | enum command_control_type ret; | |
933 | char *new_line; | |
934 | ||
935 | switch (cmd->control_type) | |
936 | { | |
937 | case simple_control: | |
938 | /* A simple command, execute it and return. */ | |
939 | new_line = insert_args (cmd->line); | |
940 | if (!new_line) | |
941 | return invalid_control; | |
c5aa993b JM |
942 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
943 | &new_line); | |
c906108c SS |
944 | execute_command (new_line, 0); |
945 | ret = cmd->control_type; | |
946 | break; | |
947 | ||
948 | case continue_control: | |
949 | case break_control: | |
950 | /* Return for "continue", and "break" so we can either | |
c5aa993b | 951 | continue the loop at the top, or break out. */ |
c906108c SS |
952 | ret = cmd->control_type; |
953 | break; | |
954 | ||
955 | case while_control: | |
956 | { | |
957 | /* Parse the loop control expression for the while statement. */ | |
958 | new_line = insert_args (cmd->line); | |
959 | if (!new_line) | |
960 | return invalid_control; | |
c5aa993b JM |
961 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
962 | &new_line); | |
c906108c SS |
963 | expr = parse_expression (new_line); |
964 | make_cleanup ((make_cleanup_func) free_current_contents, &expr); | |
c5aa993b | 965 | |
c906108c SS |
966 | ret = simple_control; |
967 | loop = 1; | |
968 | ||
969 | /* Keep iterating so long as the expression is true. */ | |
970 | while (loop == 1) | |
971 | { | |
972 | int cond_result; | |
973 | ||
974 | QUIT; | |
975 | ||
976 | /* Evaluate the expression. */ | |
977 | val_mark = value_mark (); | |
978 | val = evaluate_expression (expr); | |
979 | cond_result = value_true (val); | |
980 | value_free_to_mark (val_mark); | |
981 | ||
982 | /* If the value is false, then break out of the loop. */ | |
983 | if (!cond_result) | |
984 | break; | |
985 | ||
986 | /* Execute the body of the while statement. */ | |
987 | current = *cmd->body_list; | |
988 | while (current) | |
989 | { | |
990 | ret = execute_control_command (current); | |
991 | ||
992 | /* If we got an error, or a "break" command, then stop | |
993 | looping. */ | |
994 | if (ret == invalid_control || ret == break_control) | |
995 | { | |
996 | loop = 0; | |
997 | break; | |
998 | } | |
999 | ||
1000 | /* If we got a "continue" command, then restart the loop | |
1001 | at this point. */ | |
1002 | if (ret == continue_control) | |
1003 | break; | |
c5aa993b | 1004 | |
c906108c | 1005 | /* Get the next statement. */ |
c5aa993b | 1006 | current = current->next; |
c906108c SS |
1007 | } |
1008 | } | |
1009 | ||
1010 | /* Reset RET so that we don't recurse the break all the way down. */ | |
1011 | if (ret == break_control) | |
1012 | ret = simple_control; | |
1013 | ||
1014 | break; | |
1015 | } | |
1016 | ||
1017 | case if_control: | |
1018 | { | |
1019 | new_line = insert_args (cmd->line); | |
1020 | if (!new_line) | |
1021 | return invalid_control; | |
c5aa993b JM |
1022 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
1023 | &new_line); | |
c906108c SS |
1024 | /* Parse the conditional for the if statement. */ |
1025 | expr = parse_expression (new_line); | |
1026 | make_cleanup ((make_cleanup_func) free_current_contents, &expr); | |
1027 | ||
1028 | current = NULL; | |
1029 | ret = simple_control; | |
1030 | ||
1031 | /* Evaluate the conditional. */ | |
1032 | val_mark = value_mark (); | |
1033 | val = evaluate_expression (expr); | |
1034 | ||
1035 | /* Choose which arm to take commands from based on the value of the | |
1036 | conditional expression. */ | |
1037 | if (value_true (val)) | |
1038 | current = *cmd->body_list; | |
1039 | else if (cmd->body_count == 2) | |
1040 | current = *(cmd->body_list + 1); | |
1041 | value_free_to_mark (val_mark); | |
1042 | ||
1043 | /* Execute commands in the given arm. */ | |
1044 | while (current) | |
1045 | { | |
1046 | ret = execute_control_command (current); | |
1047 | ||
1048 | /* If we got an error, get out. */ | |
1049 | if (ret != simple_control) | |
1050 | break; | |
1051 | ||
1052 | /* Get the next statement in the body. */ | |
1053 | current = current->next; | |
1054 | } | |
1055 | ||
1056 | break; | |
1057 | } | |
1058 | ||
1059 | default: | |
1060 | warning ("Invalid control type in command structure."); | |
1061 | return invalid_control; | |
1062 | } | |
1063 | ||
1064 | if (old_chain) | |
1065 | do_cleanups (old_chain); | |
1066 | ||
1067 | return ret; | |
1068 | } | |
1069 | ||
1070 | /* "while" command support. Executes a body of statements while the | |
1071 | loop condition is nonzero. */ | |
1072 | ||
1073 | static void | |
1074 | while_command (arg, from_tty) | |
1075 | char *arg; | |
1076 | int from_tty; | |
1077 | { | |
1078 | struct command_line *command = NULL; | |
1079 | ||
1080 | control_level = 1; | |
1081 | command = get_command_line (while_control, arg); | |
1082 | ||
1083 | if (command == NULL) | |
1084 | return; | |
1085 | ||
1086 | execute_control_command (command); | |
1087 | free_command_lines (&command); | |
1088 | } | |
1089 | ||
1090 | /* "if" command support. Execute either the true or false arm depending | |
1091 | on the value of the if conditional. */ | |
1092 | ||
1093 | static void | |
1094 | if_command (arg, from_tty) | |
1095 | char *arg; | |
1096 | int from_tty; | |
1097 | { | |
1098 | struct command_line *command = NULL; | |
1099 | ||
1100 | control_level = 1; | |
1101 | command = get_command_line (if_control, arg); | |
1102 | ||
1103 | if (command == NULL) | |
1104 | return; | |
1105 | ||
1106 | execute_control_command (command); | |
1107 | free_command_lines (&command); | |
1108 | } | |
1109 | ||
1110 | /* Cleanup */ | |
1111 | static void | |
1112 | arg_cleanup () | |
1113 | { | |
1114 | struct user_args *oargs = user_args; | |
1115 | if (!user_args) | |
96baa820 | 1116 | internal_error ("Internal error, arg_cleanup called with no user args.\n"); |
c906108c SS |
1117 | |
1118 | user_args = user_args->next; | |
1119 | free (oargs); | |
1120 | } | |
1121 | ||
1122 | /* Bind the incomming arguments for a user defined command to | |
1123 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
1124 | ||
1125 | static struct cleanup * | |
1126 | setup_user_args (p) | |
1127 | char *p; | |
1128 | { | |
1129 | struct user_args *args; | |
1130 | struct cleanup *old_chain; | |
1131 | unsigned int arg_count = 0; | |
1132 | ||
c5aa993b | 1133 | args = (struct user_args *) xmalloc (sizeof (struct user_args)); |
c906108c SS |
1134 | memset (args, 0, sizeof (struct user_args)); |
1135 | ||
1136 | args->next = user_args; | |
1137 | user_args = args; | |
1138 | ||
1139 | old_chain = make_cleanup ((make_cleanup_func) arg_cleanup, 0); | |
1140 | ||
1141 | if (p == NULL) | |
1142 | return old_chain; | |
1143 | ||
1144 | while (*p) | |
1145 | { | |
1146 | char *start_arg; | |
1147 | int squote = 0; | |
1148 | int dquote = 0; | |
1149 | int bsquote = 0; | |
1150 | ||
1151 | if (arg_count >= MAXUSERARGS) | |
1152 | { | |
1153 | error ("user defined function may only have %d arguments.\n", | |
1154 | MAXUSERARGS); | |
1155 | return old_chain; | |
1156 | } | |
1157 | ||
1158 | /* Strip whitespace. */ | |
1159 | while (*p == ' ' || *p == '\t') | |
1160 | p++; | |
1161 | ||
1162 | /* P now points to an argument. */ | |
1163 | start_arg = p; | |
1164 | user_args->a[arg_count].arg = p; | |
1165 | ||
1166 | /* Get to the end of this argument. */ | |
1167 | while (*p) | |
1168 | { | |
1169 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
1170 | break; | |
1171 | else | |
1172 | { | |
1173 | if (bsquote) | |
1174 | bsquote = 0; | |
1175 | else if (*p == '\\') | |
1176 | bsquote = 1; | |
1177 | else if (squote) | |
1178 | { | |
1179 | if (*p == '\'') | |
1180 | squote = 0; | |
1181 | } | |
1182 | else if (dquote) | |
1183 | { | |
1184 | if (*p == '"') | |
1185 | dquote = 0; | |
1186 | } | |
1187 | else | |
1188 | { | |
1189 | if (*p == '\'') | |
1190 | squote = 1; | |
1191 | else if (*p == '"') | |
1192 | dquote = 1; | |
1193 | } | |
1194 | p++; | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | user_args->a[arg_count].len = p - start_arg; | |
1199 | arg_count++; | |
1200 | user_args->count++; | |
1201 | } | |
1202 | return old_chain; | |
1203 | } | |
1204 | ||
1205 | /* Given character string P, return a point to the first argument ($arg), | |
1206 | or NULL if P contains no arguments. */ | |
1207 | ||
1208 | static char * | |
1209 | locate_arg (p) | |
1210 | char *p; | |
1211 | { | |
1212 | while ((p = strchr (p, '$'))) | |
1213 | { | |
1214 | if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4])) | |
1215 | return p; | |
1216 | p++; | |
1217 | } | |
1218 | return NULL; | |
1219 | } | |
1220 | ||
1221 | /* Insert the user defined arguments stored in user_arg into the $arg | |
1222 | arguments found in line, with the updated copy being placed into nline. */ | |
1223 | ||
1224 | static char * | |
1225 | insert_args (line) | |
1226 | char *line; | |
1227 | { | |
1228 | char *p, *save_line, *new_line; | |
1229 | unsigned len, i; | |
1230 | ||
1231 | /* First we need to know how much memory to allocate for the new line. */ | |
1232 | save_line = line; | |
1233 | len = 0; | |
1234 | while ((p = locate_arg (line))) | |
1235 | { | |
1236 | len += p - line; | |
1237 | i = p[4] - '0'; | |
c5aa993b | 1238 | |
c906108c SS |
1239 | if (i >= user_args->count) |
1240 | { | |
1241 | error ("Missing argument %d in user function.\n", i); | |
1242 | return NULL; | |
1243 | } | |
1244 | len += user_args->a[i].len; | |
1245 | line = p + 5; | |
1246 | } | |
1247 | ||
1248 | /* Don't forget the tail. */ | |
1249 | len += strlen (line); | |
1250 | ||
1251 | /* Allocate space for the new line and fill it in. */ | |
c5aa993b | 1252 | new_line = (char *) xmalloc (len + 1); |
c906108c SS |
1253 | if (new_line == NULL) |
1254 | return NULL; | |
1255 | ||
1256 | /* Restore pointer to beginning of old line. */ | |
1257 | line = save_line; | |
1258 | ||
1259 | /* Save pointer to beginning of new line. */ | |
1260 | save_line = new_line; | |
1261 | ||
1262 | while ((p = locate_arg (line))) | |
1263 | { | |
1264 | int i, len; | |
1265 | ||
1266 | memcpy (new_line, line, p - line); | |
1267 | new_line += p - line; | |
1268 | i = p[4] - '0'; | |
1269 | ||
1270 | len = user_args->a[i].len; | |
1271 | if (len) | |
1272 | { | |
1273 | memcpy (new_line, user_args->a[i].arg, len); | |
1274 | new_line += len; | |
1275 | } | |
1276 | line = p + 5; | |
1277 | } | |
1278 | /* Don't forget the tail. */ | |
1279 | strcpy (new_line, line); | |
1280 | ||
1281 | /* Return a pointer to the beginning of the new line. */ | |
1282 | return save_line; | |
1283 | } | |
1284 | ||
1285 | void | |
1286 | execute_user_command (c, args) | |
1287 | struct cmd_list_element *c; | |
1288 | char *args; | |
1289 | { | |
1290 | register struct command_line *cmdlines; | |
1291 | struct cleanup *old_chain; | |
1292 | enum command_control_type ret; | |
1293 | ||
1294 | old_chain = setup_user_args (args); | |
1295 | ||
1296 | cmdlines = c->user_commands; | |
1297 | if (cmdlines == 0) | |
1298 | /* Null command */ | |
1299 | return; | |
1300 | ||
1301 | /* Set the instream to 0, indicating execution of a | |
1302 | user-defined function. */ | |
1303 | old_chain = make_cleanup ((make_cleanup_func) source_cleanup, instream); | |
1304 | instream = (FILE *) 0; | |
1305 | while (cmdlines) | |
1306 | { | |
1307 | ret = execute_control_command (cmdlines); | |
1308 | if (ret != simple_control && ret != break_control) | |
1309 | { | |
1310 | warning ("Error in control structure.\n"); | |
1311 | break; | |
1312 | } | |
1313 | cmdlines = cmdlines->next; | |
1314 | } | |
1315 | do_cleanups (old_chain); | |
1316 | } | |
1317 | ||
1318 | /* Execute the line P as a command. | |
1319 | Pass FROM_TTY as second argument to the defining function. */ | |
1320 | ||
1321 | void | |
1322 | execute_command (p, from_tty) | |
1323 | char *p; | |
1324 | int from_tty; | |
1325 | { | |
1326 | register struct cmd_list_element *c; | |
1327 | register enum language flang; | |
1328 | static int warned = 0; | |
1329 | /* FIXME: These should really be in an appropriate header file */ | |
1330 | extern void serial_log_command PARAMS ((const char *)); | |
1331 | ||
1332 | free_all_values (); | |
1333 | ||
1334 | /* Force cleanup of any alloca areas if using C alloca instead of | |
1335 | a builtin alloca. */ | |
1336 | alloca (0); | |
1337 | ||
1338 | /* This can happen when command_line_input hits end of file. */ | |
1339 | if (p == NULL) | |
c5aa993b | 1340 | return; |
c906108c SS |
1341 | |
1342 | serial_log_command (p); | |
1343 | ||
c5aa993b JM |
1344 | while (*p == ' ' || *p == '\t') |
1345 | p++; | |
c906108c SS |
1346 | if (*p) |
1347 | { | |
1348 | char *arg; | |
1349 | ||
1350 | c = lookup_cmd (&p, cmdlist, "", 0, 1); | |
43ff13b4 JM |
1351 | |
1352 | /* If the target is running, we allow only a limited set of | |
1353 | commands. */ | |
6426a772 | 1354 | if (event_loop_p && target_can_async_p () && target_executing) |
43ff13b4 JM |
1355 | if (!strcmp (c->name, "help") |
1356 | && !strcmp (c->name, "pwd") | |
1357 | && !strcmp (c->name, "show") | |
1358 | && !strcmp (c->name, "stop")) | |
1359 | error ("Cannot execute this command while the target is running."); | |
1360 | ||
c906108c SS |
1361 | /* Pass null arg rather than an empty one. */ |
1362 | arg = *p ? p : 0; | |
1363 | ||
1364 | /* Clear off trailing whitespace, except for set and complete command. */ | |
1365 | if (arg && c->type != set_cmd && c->function.cfunc != complete_command) | |
1366 | { | |
1367 | p = arg + strlen (arg) - 1; | |
1368 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
1369 | p--; | |
1370 | *(p + 1) = '\0'; | |
1371 | } | |
1372 | ||
1373 | /* If this command has been hooked, run the hook first. */ | |
1374 | if (c->hook) | |
c5aa993b | 1375 | execute_user_command (c->hook, (char *) 0); |
c906108c SS |
1376 | |
1377 | if (c->class == class_user) | |
1378 | execute_user_command (c, arg); | |
1379 | else if (c->type == set_cmd || c->type == show_cmd) | |
1380 | do_setshow_command (arg, from_tty & caution, c); | |
1381 | else if (c->function.cfunc == NO_FUNCTION) | |
1382 | error ("That is not a command, just a help topic."); | |
1383 | else if (call_command_hook) | |
1384 | call_command_hook (c, arg, from_tty & caution); | |
1385 | else | |
1386 | (*c->function.cfunc) (arg, from_tty & caution); | |
c5aa993b | 1387 | } |
c906108c SS |
1388 | |
1389 | /* Tell the user if the language has changed (except first time). */ | |
1390 | if (current_language != expected_language) | |
c5aa993b JM |
1391 | { |
1392 | if (language_mode == language_mode_auto) | |
1393 | { | |
1394 | language_info (1); /* Print what changed. */ | |
1395 | } | |
1396 | warned = 0; | |
c906108c | 1397 | } |
c906108c SS |
1398 | |
1399 | /* Warn the user if the working language does not match the | |
1400 | language of the current frame. Only warn the user if we are | |
1401 | actually running the program, i.e. there is a stack. */ | |
1402 | /* FIXME: This should be cacheing the frame and only running when | |
1403 | the frame changes. */ | |
1404 | ||
1405 | if (target_has_stack) | |
1406 | { | |
1407 | flang = get_frame_language (); | |
1408 | if (!warned | |
1409 | && flang != language_unknown | |
1410 | && flang != current_language->la_language) | |
1411 | { | |
1412 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1413 | warned = 1; | |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | /* ARGSUSED */ | |
392a587b | 1419 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
1420 | gdb to use the event loop as the default command loop and we merge |
1421 | event-top.c into this file, top.c */ | |
1422 | /* static */ void | |
c906108c SS |
1423 | command_loop_marker (foo) |
1424 | int foo; | |
1425 | { | |
1426 | } | |
1427 | ||
1428 | /* Read commands from `instream' and execute them | |
1429 | until end of file or error reading instream. */ | |
1430 | ||
1431 | void | |
1432 | command_loop () | |
1433 | { | |
1434 | struct cleanup *old_chain; | |
1435 | char *command; | |
1436 | int stdin_is_tty = ISATTY (stdin); | |
1437 | long time_at_cmd_start; | |
1438 | #ifdef HAVE_SBRK | |
1439 | long space_at_cmd_start = 0; | |
1440 | #endif | |
1441 | extern int display_time; | |
1442 | extern int display_space; | |
1443 | ||
1444 | while (instream && !feof (instream)) | |
1445 | { | |
1446 | #if defined(TUI) | |
1447 | extern int insert_mode; | |
1448 | #endif | |
1449 | if (window_hook && instream == stdin) | |
0f71a2f6 | 1450 | (*window_hook) (instream, get_prompt ()); |
c906108c SS |
1451 | |
1452 | quit_flag = 0; | |
1453 | if (instream == stdin && stdin_is_tty) | |
1454 | reinitialize_more_filter (); | |
1455 | old_chain = make_cleanup ((make_cleanup_func) command_loop_marker, 0); | |
1456 | ||
1457 | #if defined(TUI) | |
1458 | /* A bit of paranoia: I want to make sure the "insert_mode" global | |
1459 | * is clear except when it is being used for command-line editing | |
1460 | * (see tuiIO.c, utils.c); otherwise normal output will | |
1461 | * get messed up in the TUI. So clear it before/after | |
1462 | * the command-line-input call. - RT | |
1463 | */ | |
1464 | insert_mode = 0; | |
1465 | #endif | |
1466 | /* Get a command-line. This calls the readline package. */ | |
c5aa993b | 1467 | command = command_line_input (instream == stdin ? |
0f71a2f6 | 1468 | get_prompt () : (char *) NULL, |
c906108c SS |
1469 | instream == stdin, "prompt"); |
1470 | #if defined(TUI) | |
1471 | insert_mode = 0; | |
1472 | #endif | |
1473 | if (command == 0) | |
1474 | return; | |
1475 | ||
1476 | time_at_cmd_start = get_run_time (); | |
1477 | ||
1478 | if (display_space) | |
1479 | { | |
1480 | #ifdef HAVE_SBRK | |
1481 | extern char **environ; | |
1482 | char *lim = (char *) sbrk (0); | |
1483 | ||
1484 | space_at_cmd_start = (long) (lim - (char *) &environ); | |
1485 | #endif | |
1486 | } | |
1487 | ||
1488 | execute_command (command, instream == stdin); | |
1489 | /* Do any commands attached to breakpoint we stopped at. */ | |
1490 | bpstat_do_actions (&stop_bpstat); | |
1491 | do_cleanups (old_chain); | |
1492 | ||
1493 | if (display_time) | |
1494 | { | |
1495 | long cmd_time = get_run_time () - time_at_cmd_start; | |
1496 | ||
1497 | printf_unfiltered ("Command execution time: %ld.%06ld\n", | |
1498 | cmd_time / 1000000, cmd_time % 1000000); | |
1499 | } | |
1500 | ||
1501 | if (display_space) | |
1502 | { | |
1503 | #ifdef HAVE_SBRK | |
1504 | extern char **environ; | |
1505 | char *lim = (char *) sbrk (0); | |
1506 | long space_now = lim - (char *) &environ; | |
1507 | long space_diff = space_now - space_at_cmd_start; | |
1508 | ||
1509 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", | |
1510 | space_now, | |
1511 | (space_diff >= 0 ? '+' : '-'), | |
1512 | space_diff); | |
1513 | #endif | |
1514 | } | |
1515 | } | |
1516 | } | |
392a587b | 1517 | |
9e0b60a8 JM |
1518 | \f |
1519 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1520 | ||
1521 | void | |
1522 | dont_repeat () | |
1523 | { | |
1524 | if (server_command) | |
1525 | return; | |
1526 | ||
1527 | /* If we aren't reading from standard input, we are saving the last | |
1528 | thing read from stdin in line and don't want to delete it. Null lines | |
1529 | won't repeat here in any case. */ | |
1530 | if (instream == stdin) | |
1531 | *line = 0; | |
1532 | } | |
1533 | \f | |
1534 | /* Read a line from the stream "instream" without command line editing. | |
1535 | ||
1536 | It prints PROMPT_ARG once at the start. | |
1537 | Action is compatible with "readline", e.g. space for the result is | |
1538 | malloc'd and should be freed by the caller. | |
1539 | ||
1540 | A NULL return means end of file. */ | |
1541 | char * | |
1542 | gdb_readline (prompt_arg) | |
1543 | char *prompt_arg; | |
1544 | { | |
1545 | int c; | |
1546 | char *result; | |
1547 | int input_index = 0; | |
1548 | int result_size = 80; | |
1549 | ||
1550 | if (prompt_arg) | |
1551 | { | |
1552 | /* Don't use a _filtered function here. It causes the assumed | |
c5aa993b JM |
1553 | character position to be off, since the newline we read from |
1554 | the user is not accounted for. */ | |
9e0b60a8 JM |
1555 | fputs_unfiltered (prompt_arg, gdb_stdout); |
1556 | #ifdef MPW | |
1557 | /* Move to a new line so the entered line doesn't have a prompt | |
c5aa993b | 1558 | on the front of it. */ |
9e0b60a8 JM |
1559 | fputs_unfiltered ("\n", gdb_stdout); |
1560 | #endif /* MPW */ | |
1561 | gdb_flush (gdb_stdout); | |
1562 | } | |
1563 | ||
1564 | result = (char *) xmalloc (result_size); | |
1565 | ||
1566 | while (1) | |
1567 | { | |
1568 | /* Read from stdin if we are executing a user defined command. | |
c5aa993b | 1569 | This is the right thing for prompt_for_continue, at least. */ |
9e0b60a8 JM |
1570 | c = fgetc (instream ? instream : stdin); |
1571 | ||
1572 | if (c == EOF) | |
1573 | { | |
1574 | if (input_index > 0) | |
1575 | /* The last line does not end with a newline. Return it, and | |
1576 | if we are called again fgetc will still return EOF and | |
1577 | we'll return NULL then. */ | |
1578 | break; | |
1579 | free (result); | |
1580 | return NULL; | |
1581 | } | |
1582 | ||
1583 | if (c == '\n') | |
1584 | #ifndef CRLF_SOURCE_FILES | |
1585 | break; | |
1586 | #else | |
1587 | { | |
1588 | if (input_index > 0 && result[input_index - 1] == '\r') | |
1589 | input_index--; | |
1590 | break; | |
1591 | } | |
1592 | #endif | |
1593 | ||
1594 | result[input_index++] = c; | |
1595 | while (input_index >= result_size) | |
1596 | { | |
1597 | result_size *= 2; | |
1598 | result = (char *) xrealloc (result, result_size); | |
1599 | } | |
1600 | } | |
1601 | ||
1602 | result[input_index++] = '\0'; | |
1603 | return result; | |
1604 | } | |
1605 | ||
1606 | /* Variables which control command line editing and history | |
1607 | substitution. These variables are given default values at the end | |
1608 | of this file. */ | |
1609 | static int command_editing_p; | |
1610 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
1611 | gdb to use the event loop as the default command loop and we merge | |
1612 | event-top.c into this file, top.c */ | |
1613 | /* static */ int history_expansion_p; | |
1614 | static int write_history_p; | |
1615 | static int history_size; | |
1616 | static char *history_filename; | |
1617 | ||
1618 | /* readline uses the word breaks for two things: | |
1619 | (1) In figuring out where to point the TEXT parameter to the | |
1620 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1621 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1622 | it does affect how much stuff M-? lists. | |
1623 | (2) If one of the matches contains a word break character, readline | |
1624 | will quote it. That's why we switch between | |
1625 | gdb_completer_word_break_characters and | |
1626 | gdb_completer_command_word_break_characters. I'm not sure when | |
1627 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1628 | ||
1629 | /* Variables which are necessary for fancy command line editing. */ | |
1630 | char *gdb_completer_word_break_characters = | |
c5aa993b | 1631 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
9e0b60a8 JM |
1632 | |
1633 | /* When completing on command names, we remove '-' from the list of | |
1634 | word break characters, since we use it in command names. If the | |
1635 | readline library sees one in any of the current completion strings, | |
1636 | it thinks that the string needs to be quoted and automatically supplies | |
1637 | a leading quote. */ | |
1638 | char *gdb_completer_command_word_break_characters = | |
c5aa993b | 1639 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; |
9e0b60a8 JM |
1640 | |
1641 | /* Characters that can be used to quote completion strings. Note that we | |
1642 | can't include '"' because the gdb C parser treats such quoted sequences | |
1643 | as strings. */ | |
1644 | char *gdb_completer_quote_characters = | |
c5aa993b | 1645 | "'"; |
9e0b60a8 JM |
1646 | |
1647 | /* Functions that are used as part of the fancy command line editing. */ | |
1648 | ||
1649 | /* This can be used for functions which don't want to complete on symbols | |
1650 | but don't want to complete on anything else either. */ | |
1651 | /* ARGSUSED */ | |
1652 | char ** | |
1653 | noop_completer (text, prefix) | |
1654 | char *text; | |
1655 | char *prefix; | |
1656 | { | |
1657 | return NULL; | |
1658 | } | |
1659 | ||
1660 | /* Complete on filenames. */ | |
1661 | char ** | |
1662 | filename_completer (text, word) | |
1663 | char *text; | |
1664 | char *word; | |
1665 | { | |
1666 | /* From readline. */ | |
1667 | extern char *filename_completion_function PARAMS ((char *, int)); | |
1668 | int subsequent_name; | |
1669 | char **return_val; | |
1670 | int return_val_used; | |
1671 | int return_val_alloced; | |
1672 | ||
1673 | return_val_used = 0; | |
1674 | /* Small for testing. */ | |
1675 | return_val_alloced = 1; | |
1676 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1677 | ||
1678 | subsequent_name = 0; | |
1679 | while (1) | |
1680 | { | |
1681 | char *p; | |
1682 | p = filename_completion_function (text, subsequent_name); | |
1683 | if (return_val_used >= return_val_alloced) | |
1684 | { | |
1685 | return_val_alloced *= 2; | |
1686 | return_val = | |
1687 | (char **) xrealloc (return_val, | |
1688 | return_val_alloced * sizeof (char *)); | |
1689 | } | |
1690 | if (p == NULL) | |
1691 | { | |
1692 | return_val[return_val_used++] = p; | |
1693 | break; | |
1694 | } | |
1695 | /* Like emacs, don't complete on old versions. Especially useful | |
c5aa993b | 1696 | in the "source" command. */ |
9e0b60a8 JM |
1697 | if (p[strlen (p) - 1] == '~') |
1698 | continue; | |
1699 | ||
1700 | { | |
1701 | char *q; | |
1702 | if (word == text) | |
1703 | /* Return exactly p. */ | |
1704 | return_val[return_val_used++] = p; | |
1705 | else if (word > text) | |
1706 | { | |
1707 | /* Return some portion of p. */ | |
1708 | q = xmalloc (strlen (p) + 5); | |
1709 | strcpy (q, p + (word - text)); | |
1710 | return_val[return_val_used++] = q; | |
1711 | free (p); | |
1712 | } | |
1713 | else | |
1714 | { | |
1715 | /* Return some of TEXT plus p. */ | |
1716 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1717 | strncpy (q, word, text - word); | |
1718 | q[text - word] = '\0'; | |
1719 | strcat (q, p); | |
1720 | return_val[return_val_used++] = q; | |
1721 | free (p); | |
1722 | } | |
1723 | } | |
1724 | subsequent_name = 1; | |
1725 | } | |
1726 | #if 0 | |
1727 | /* There is no way to do this just long enough to affect quote inserting | |
1728 | without also affecting the next completion. This should be fixed in | |
1729 | readline. FIXME. */ | |
1730 | /* Insure that readline does the right thing | |
1731 | with respect to inserting quotes. */ | |
1732 | rl_completer_word_break_characters = ""; | |
1733 | #endif | |
1734 | return return_val; | |
1735 | } | |
1736 | ||
1737 | /* Here are some useful test cases for completion. FIXME: These should | |
1738 | be put in the test suite. They should be tested with both M-? and TAB. | |
1739 | ||
1740 | "show output-" "radix" | |
1741 | "show output" "-radix" | |
1742 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1743 | "p " ambiguous (all symbols) | |
1744 | "info t foo" no completions | |
1745 | "info t " no completions | |
1746 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1747 | "info ajksdlfk" no completions | |
1748 | "info ajksdlfk " no completions | |
1749 | "info" " " | |
1750 | "info " ambiguous (all info commands) | |
1751 | "p \"a" no completions (string constant) | |
1752 | "p 'a" ambiguous (all symbols starting with a) | |
1753 | "p b-a" ambiguous (all symbols starting with a) | |
1754 | "p b-" ambiguous (all symbols) | |
1755 | "file Make" "file" (word break hard to screw up here) | |
1756 | "file ../gdb.stabs/we" "ird" (needs to not break word at slash) | |
c5aa993b | 1757 | */ |
9e0b60a8 JM |
1758 | |
1759 | /* Generate completions one by one for the completer. Each time we are | |
1760 | called return another potential completion to the caller. | |
1761 | line_completion just completes on commands or passes the buck to the | |
1762 | command's completer function, the stuff specific to symbol completion | |
1763 | is in make_symbol_completion_list. | |
1764 | ||
1765 | TEXT is the caller's idea of the "word" we are looking at. | |
1766 | ||
1767 | MATCHES is the number of matches that have currently been collected from | |
1768 | calling this completion function. When zero, then we need to initialize, | |
1769 | otherwise the initialization has already taken place and we can just | |
1770 | return the next potential completion string. | |
1771 | ||
1772 | LINE_BUFFER is available to be looked at; it contains the entire text | |
1773 | of the line. POINT is the offset in that line of the cursor. You | |
1774 | should pretend that the line ends at POINT. | |
1775 | ||
1776 | Returns NULL if there are no more completions, else a pointer to a string | |
1777 | which is a possible completion, it is the caller's responsibility to | |
1778 | free the string. */ | |
1779 | ||
1780 | static char * | |
1781 | line_completion_function (text, matches, line_buffer, point) | |
1782 | char *text; | |
1783 | int matches; | |
1784 | char *line_buffer; | |
1785 | int point; | |
1786 | { | |
c5aa993b JM |
1787 | static char **list = (char **) NULL; /* Cache of completions */ |
1788 | static int index; /* Next cached completion */ | |
9e0b60a8 JM |
1789 | char *output = NULL; |
1790 | char *tmp_command, *p; | |
1791 | /* Pointer within tmp_command which corresponds to text. */ | |
1792 | char *word; | |
1793 | struct cmd_list_element *c, *result_list; | |
1794 | ||
1795 | if (matches == 0) | |
1796 | { | |
1797 | /* The caller is beginning to accumulate a new set of completions, so | |
c5aa993b JM |
1798 | we need to find all of them now, and cache them for returning one at |
1799 | a time on future calls. */ | |
9e0b60a8 JM |
1800 | |
1801 | if (list) | |
1802 | { | |
1803 | /* Free the storage used by LIST, but not by the strings inside. | |
1804 | This is because rl_complete_internal () frees the strings. */ | |
c5aa993b | 1805 | free ((PTR) list); |
9e0b60a8 JM |
1806 | } |
1807 | list = 0; | |
1808 | index = 0; | |
1809 | ||
1810 | /* Choose the default set of word break characters to break completions. | |
c5aa993b JM |
1811 | If we later find out that we are doing completions on command strings |
1812 | (as opposed to strings supplied by the individual command completer | |
1813 | functions, which can be any string) then we will switch to the | |
1814 | special word break set for command strings, which leaves out the | |
1815 | '-' character used in some commands. */ | |
9e0b60a8 JM |
1816 | |
1817 | rl_completer_word_break_characters = | |
c5aa993b | 1818 | gdb_completer_word_break_characters; |
9e0b60a8 JM |
1819 | |
1820 | /* Decide whether to complete on a list of gdb commands or on symbols. */ | |
1821 | tmp_command = (char *) alloca (point + 1); | |
1822 | p = tmp_command; | |
1823 | ||
1824 | strncpy (tmp_command, line_buffer, point); | |
1825 | tmp_command[point] = '\0'; | |
1826 | /* Since text always contains some number of characters leading up | |
c5aa993b JM |
1827 | to point, we can find the equivalent position in tmp_command |
1828 | by subtracting that many characters from the end of tmp_command. */ | |
9e0b60a8 JM |
1829 | word = tmp_command + point - strlen (text); |
1830 | ||
1831 | if (point == 0) | |
1832 | { | |
1833 | /* An empty line we want to consider ambiguous; that is, it | |
1834 | could be any command. */ | |
1835 | c = (struct cmd_list_element *) -1; | |
1836 | result_list = 0; | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1841 | } | |
1842 | ||
1843 | /* Move p up to the next interesting thing. */ | |
1844 | while (*p == ' ' || *p == '\t') | |
1845 | { | |
1846 | p++; | |
1847 | } | |
1848 | ||
1849 | if (!c) | |
1850 | { | |
1851 | /* It is an unrecognized command. So there are no | |
1852 | possible completions. */ | |
1853 | list = NULL; | |
1854 | } | |
1855 | else if (c == (struct cmd_list_element *) -1) | |
1856 | { | |
1857 | char *q; | |
1858 | ||
1859 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1860 | doesn't advance over that thing itself. Do so now. */ | |
1861 | q = p; | |
1862 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1863 | ++q; | |
1864 | if (q != tmp_command + point) | |
1865 | { | |
1866 | /* There is something beyond the ambiguous | |
c5aa993b JM |
1867 | command, so there are no possible completions. For |
1868 | example, "info t " or "info t foo" does not complete | |
1869 | to anything, because "info t" can be "info target" or | |
1870 | "info terminal". */ | |
9e0b60a8 JM |
1871 | list = NULL; |
1872 | } | |
1873 | else | |
1874 | { | |
1875 | /* We're trying to complete on the command which was ambiguous. | |
c5aa993b | 1876 | This we can deal with. */ |
9e0b60a8 JM |
1877 | if (result_list) |
1878 | { | |
1879 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1880 | word); | |
1881 | } | |
1882 | else | |
1883 | { | |
1884 | list = complete_on_cmdlist (cmdlist, p, word); | |
1885 | } | |
1886 | /* Insure that readline does the right thing with respect to | |
c5aa993b | 1887 | inserting quotes. */ |
9e0b60a8 JM |
1888 | rl_completer_word_break_characters = |
1889 | gdb_completer_command_word_break_characters; | |
1890 | } | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | /* We've recognized a full command. */ | |
1895 | ||
1896 | if (p == tmp_command + point) | |
1897 | { | |
1898 | /* There is no non-whitespace in the line beyond the command. */ | |
1899 | ||
1900 | if (p[-1] == ' ' || p[-1] == '\t') | |
1901 | { | |
1902 | /* The command is followed by whitespace; we need to complete | |
1903 | on whatever comes after command. */ | |
1904 | if (c->prefixlist) | |
1905 | { | |
1906 | /* It is a prefix command; what comes after it is | |
c5aa993b | 1907 | a subcommand (e.g. "info "). */ |
9e0b60a8 JM |
1908 | list = complete_on_cmdlist (*c->prefixlist, p, word); |
1909 | ||
1910 | /* Insure that readline does the right thing | |
c5aa993b | 1911 | with respect to inserting quotes. */ |
9e0b60a8 JM |
1912 | rl_completer_word_break_characters = |
1913 | gdb_completer_command_word_break_characters; | |
1914 | } | |
1915 | else if (c->enums) | |
1916 | { | |
1917 | list = complete_on_enum (c->enums, p, word); | |
1918 | rl_completer_word_break_characters = | |
1919 | gdb_completer_command_word_break_characters; | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | /* It is a normal command; what comes after it is | |
c5aa993b | 1924 | completed by the command's completer function. */ |
9e0b60a8 JM |
1925 | list = (*c->completer) (p, word); |
1926 | } | |
1927 | } | |
1928 | else | |
1929 | { | |
1930 | /* The command is not followed by whitespace; we need to | |
1931 | complete on the command itself. e.g. "p" which is a | |
1932 | command itself but also can complete to "print", "ptype" | |
1933 | etc. */ | |
1934 | char *q; | |
1935 | ||
1936 | /* Find the command we are completing on. */ | |
1937 | q = p; | |
1938 | while (q > tmp_command) | |
1939 | { | |
1940 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1941 | --q; | |
1942 | else | |
1943 | break; | |
1944 | } | |
1945 | ||
1946 | list = complete_on_cmdlist (result_list, q, word); | |
1947 | ||
1948 | /* Insure that readline does the right thing | |
1949 | with respect to inserting quotes. */ | |
1950 | rl_completer_word_break_characters = | |
1951 | gdb_completer_command_word_break_characters; | |
1952 | } | |
1953 | } | |
1954 | else | |
1955 | { | |
1956 | /* There is non-whitespace beyond the command. */ | |
1957 | ||
1958 | if (c->prefixlist && !c->allow_unknown) | |
1959 | { | |
1960 | /* It is an unrecognized subcommand of a prefix command, | |
1961 | e.g. "info adsfkdj". */ | |
1962 | list = NULL; | |
1963 | } | |
1964 | else if (c->enums) | |
1965 | { | |
1966 | list = complete_on_enum (c->enums, p, word); | |
1967 | } | |
1968 | else | |
1969 | { | |
1970 | /* It is a normal command. */ | |
1971 | list = (*c->completer) (p, word); | |
1972 | } | |
1973 | } | |
1974 | } | |
1975 | } | |
1976 | ||
1977 | /* If we found a list of potential completions during initialization then | |
1978 | dole them out one at a time. The vector of completions is NULL | |
1979 | terminated, so after returning the last one, return NULL (and continue | |
1980 | to do so) each time we are called after that, until a new list is | |
1981 | available. */ | |
1982 | ||
1983 | if (list) | |
1984 | { | |
1985 | output = list[index]; | |
1986 | if (output) | |
1987 | { | |
1988 | index++; | |
1989 | } | |
1990 | } | |
1991 | ||
1992 | #if 0 | |
1993 | /* Can't do this because readline hasn't yet checked the word breaks | |
1994 | for figuring out whether to insert a quote. */ | |
1995 | if (output == NULL) | |
1996 | /* Make sure the word break characters are set back to normal for the | |
1997 | next time that readline tries to complete something. */ | |
1998 | rl_completer_word_break_characters = | |
1999 | gdb_completer_word_break_characters; | |
2000 | #endif | |
2001 | ||
2002 | return (output); | |
2003 | } | |
2004 | ||
2005 | /* Line completion interface function for readline. */ | |
2006 | ||
2007 | static char * | |
2008 | readline_line_completion_function (text, matches) | |
2009 | char *text; | |
2010 | int matches; | |
2011 | { | |
2012 | return line_completion_function (text, matches, rl_line_buffer, rl_point); | |
2013 | } | |
2014 | ||
2015 | /* Skip over a possibly quoted word (as defined by the quote characters | |
2016 | and word break characters the completer uses). Returns pointer to the | |
2017 | location after the "word". */ | |
2018 | ||
2019 | char * | |
2020 | skip_quoted (str) | |
2021 | char *str; | |
2022 | { | |
2023 | char quote_char = '\0'; | |
2024 | char *scan; | |
2025 | ||
2026 | for (scan = str; *scan != '\0'; scan++) | |
2027 | { | |
2028 | if (quote_char != '\0') | |
2029 | { | |
2030 | /* Ignore everything until the matching close quote char */ | |
2031 | if (*scan == quote_char) | |
2032 | { | |
2033 | /* Found matching close quote. */ | |
2034 | scan++; | |
2035 | break; | |
2036 | } | |
2037 | } | |
2038 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
2039 | { | |
2040 | /* Found start of a quoted string. */ | |
2041 | quote_char = *scan; | |
2042 | } | |
2043 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
2044 | { | |
2045 | break; | |
2046 | } | |
2047 | } | |
2048 | return (scan); | |
2049 | } | |
9e0b60a8 | 2050 | \f |
c5aa993b | 2051 | |
9e0b60a8 JM |
2052 | #ifdef STOP_SIGNAL |
2053 | static void | |
2054 | stop_sig (signo) | |
c5aa993b | 2055 | int signo; |
9e0b60a8 JM |
2056 | { |
2057 | #if STOP_SIGNAL == SIGTSTP | |
2058 | signal (SIGTSTP, SIG_DFL); | |
2059 | sigsetmask (0); | |
2060 | kill (getpid (), SIGTSTP); | |
2061 | signal (SIGTSTP, stop_sig); | |
2062 | #else | |
2063 | signal (STOP_SIGNAL, stop_sig); | |
2064 | #endif | |
2065 | printf_unfiltered ("%s", get_prompt ()); | |
2066 | gdb_flush (gdb_stdout); | |
2067 | ||
2068 | /* Forget about any previous command -- null line now will do nothing. */ | |
2069 | dont_repeat (); | |
2070 | } | |
2071 | #endif /* STOP_SIGNAL */ | |
2072 | ||
2073 | /* Initialize signal handlers. */ | |
2074 | static void | |
2075 | do_nothing (signo) | |
c5aa993b | 2076 | int signo; |
9e0b60a8 JM |
2077 | { |
2078 | /* Under System V the default disposition of a signal is reinstated after | |
2079 | the signal is caught and delivered to an application process. On such | |
2080 | systems one must restore the replacement signal handler if one wishes | |
2081 | to continue handling the signal in one's program. On BSD systems this | |
2082 | is not needed but it is harmless, and it simplifies the code to just do | |
2083 | it unconditionally. */ | |
2084 | signal (signo, do_nothing); | |
2085 | } | |
2086 | ||
2087 | static void | |
2088 | init_signals () | |
2089 | { | |
2090 | signal (SIGINT, request_quit); | |
2091 | ||
2092 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed | |
2093 | to the inferior and breakpoints will be ignored. */ | |
2094 | #ifdef SIGTRAP | |
2095 | signal (SIGTRAP, SIG_DFL); | |
2096 | #endif | |
2097 | ||
2098 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
2099 | passed to the inferior, which we don't want. It would be | |
2100 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
2101 | on BSD4.3 systems using vfork, that can affect the | |
2102 | GDB process as well as the inferior (the signal handling tables | |
2103 | might be in memory, shared between the two). Since we establish | |
2104 | a handler for SIGQUIT, when we call exec it will set the signal | |
2105 | to SIG_DFL for us. */ | |
2106 | signal (SIGQUIT, do_nothing); | |
2107 | #ifdef SIGHUP | |
2108 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
2109 | signal (SIGHUP, disconnect); | |
2110 | #endif | |
2111 | signal (SIGFPE, float_handler); | |
2112 | ||
2113 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
2114 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
2115 | #endif | |
2116 | } | |
2117 | \f | |
2118 | /* Read one line from the command input stream `instream' | |
2119 | into the local static buffer `linebuffer' (whose current length | |
2120 | is `linelength'). | |
2121 | The buffer is made bigger as necessary. | |
2122 | Returns the address of the start of the line. | |
2123 | ||
2124 | NULL is returned for end of file. | |
2125 | ||
2126 | *If* the instream == stdin & stdin is a terminal, the line read | |
2127 | is copied into the file line saver (global var char *line, | |
2128 | length linesize) so that it can be duplicated. | |
2129 | ||
2130 | This routine either uses fancy command line editing or | |
2131 | simple input as the user has requested. */ | |
2132 | ||
2133 | char * | |
2134 | command_line_input (prompt_arg, repeat, annotation_suffix) | |
2135 | char *prompt_arg; | |
2136 | int repeat; | |
2137 | char *annotation_suffix; | |
2138 | { | |
2139 | static char *linebuffer = 0; | |
2140 | static unsigned linelength = 0; | |
2141 | register char *p; | |
2142 | char *p1; | |
2143 | char *rl; | |
2144 | char *local_prompt = prompt_arg; | |
2145 | char *nline; | |
2146 | char got_eof = 0; | |
2147 | ||
2148 | /* The annotation suffix must be non-NULL. */ | |
2149 | if (annotation_suffix == NULL) | |
2150 | annotation_suffix = ""; | |
2151 | ||
2152 | if (annotation_level > 1 && instream == stdin) | |
2153 | { | |
2154 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
2155 | + strlen (annotation_suffix) + 40); | |
2156 | if (prompt_arg == NULL) | |
2157 | local_prompt[0] = '\0'; | |
2158 | else | |
2159 | strcpy (local_prompt, prompt_arg); | |
2160 | strcat (local_prompt, "\n\032\032"); | |
2161 | strcat (local_prompt, annotation_suffix); | |
2162 | strcat (local_prompt, "\n"); | |
2163 | } | |
2164 | ||
2165 | if (linebuffer == 0) | |
2166 | { | |
2167 | linelength = 80; | |
2168 | linebuffer = (char *) xmalloc (linelength); | |
2169 | } | |
2170 | ||
2171 | p = linebuffer; | |
2172 | ||
2173 | /* Control-C quits instantly if typed while in this loop | |
2174 | since it should not wait until the user types a newline. */ | |
2175 | immediate_quit++; | |
2176 | #ifdef STOP_SIGNAL | |
2177 | if (job_control) | |
2178 | { | |
6426a772 | 2179 | if (event_loop_p) |
9e0b60a8 JM |
2180 | signal (STOP_SIGNAL, handle_stop_sig); |
2181 | else | |
2182 | signal (STOP_SIGNAL, stop_sig); | |
2183 | } | |
2184 | #endif | |
2185 | ||
2186 | while (1) | |
2187 | { | |
2188 | /* Make sure that all output has been output. Some machines may let | |
c5aa993b | 2189 | you get away with leaving out some of the gdb_flush, but not all. */ |
9e0b60a8 JM |
2190 | wrap_here (""); |
2191 | gdb_flush (gdb_stdout); | |
2192 | gdb_flush (gdb_stderr); | |
2193 | ||
2194 | if (source_file_name != NULL) | |
2195 | { | |
2196 | ++source_line_number; | |
2197 | sprintf (source_error, | |
2198 | "%s%s:%d: Error in sourced command file:\n", | |
2199 | source_pre_error, | |
2200 | source_file_name, | |
2201 | source_line_number); | |
2202 | error_pre_print = source_error; | |
2203 | } | |
2204 | ||
2205 | if (annotation_level > 1 && instream == stdin) | |
2206 | { | |
2207 | printf_unfiltered ("\n\032\032pre-"); | |
2208 | printf_unfiltered (annotation_suffix); | |
2209 | printf_unfiltered ("\n"); | |
2210 | } | |
2211 | ||
2212 | /* Don't use fancy stuff if not talking to stdin. */ | |
2213 | if (readline_hook && instream == NULL) | |
2214 | { | |
2215 | rl = (*readline_hook) (local_prompt); | |
2216 | } | |
2217 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
2218 | { | |
2219 | rl = readline (local_prompt); | |
2220 | } | |
2221 | else | |
2222 | { | |
2223 | rl = gdb_readline (local_prompt); | |
2224 | } | |
2225 | ||
2226 | if (annotation_level > 1 && instream == stdin) | |
2227 | { | |
2228 | printf_unfiltered ("\n\032\032post-"); | |
2229 | printf_unfiltered (annotation_suffix); | |
2230 | printf_unfiltered ("\n"); | |
2231 | } | |
2232 | ||
2233 | if (!rl || rl == (char *) EOF) | |
2234 | { | |
2235 | got_eof = 1; | |
2236 | break; | |
2237 | } | |
c5aa993b | 2238 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
9e0b60a8 | 2239 | { |
c5aa993b | 2240 | linelength = strlen (rl) + 1 + (p - linebuffer); |
9e0b60a8 JM |
2241 | nline = (char *) xrealloc (linebuffer, linelength); |
2242 | p += nline - linebuffer; | |
2243 | linebuffer = nline; | |
2244 | } | |
2245 | p1 = rl; | |
2246 | /* Copy line. Don't copy null at end. (Leaves line alone | |
2247 | if this was just a newline) */ | |
2248 | while (*p1) | |
2249 | *p++ = *p1++; | |
2250 | ||
c5aa993b | 2251 | free (rl); /* Allocated in readline. */ |
9e0b60a8 JM |
2252 | |
2253 | if (p == linebuffer || *(p - 1) != '\\') | |
2254 | break; | |
2255 | ||
2256 | p--; /* Put on top of '\'. */ | |
2257 | local_prompt = (char *) 0; | |
c5aa993b | 2258 | } |
9e0b60a8 JM |
2259 | |
2260 | #ifdef STOP_SIGNAL | |
2261 | if (job_control) | |
2262 | signal (STOP_SIGNAL, SIG_DFL); | |
2263 | #endif | |
2264 | immediate_quit--; | |
2265 | ||
2266 | if (got_eof) | |
2267 | return NULL; | |
2268 | ||
2269 | #define SERVER_COMMAND_LENGTH 7 | |
2270 | server_command = | |
2271 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
c5aa993b | 2272 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); |
9e0b60a8 JM |
2273 | if (server_command) |
2274 | { | |
2275 | /* Note that we don't set `line'. Between this and the check in | |
c5aa993b JM |
2276 | dont_repeat, this insures that repeating will still do the |
2277 | right thing. */ | |
9e0b60a8 JM |
2278 | *p = '\0'; |
2279 | return linebuffer + SERVER_COMMAND_LENGTH; | |
2280 | } | |
2281 | ||
2282 | /* Do history expansion if that is wished. */ | |
2283 | if (history_expansion_p && instream == stdin | |
2284 | && ISATTY (instream)) | |
2285 | { | |
2286 | char *history_value; | |
2287 | int expanded; | |
2288 | ||
2289 | *p = '\0'; /* Insert null now. */ | |
2290 | expanded = history_expand (linebuffer, &history_value); | |
2291 | if (expanded) | |
2292 | { | |
2293 | /* Print the changes. */ | |
2294 | printf_unfiltered ("%s\n", history_value); | |
2295 | ||
2296 | /* If there was an error, call this function again. */ | |
2297 | if (expanded < 0) | |
2298 | { | |
2299 | free (history_value); | |
2300 | return command_line_input (prompt_arg, repeat, annotation_suffix); | |
2301 | } | |
2302 | if (strlen (history_value) > linelength) | |
2303 | { | |
2304 | linelength = strlen (history_value) + 1; | |
2305 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
2306 | } | |
2307 | strcpy (linebuffer, history_value); | |
c5aa993b | 2308 | p = linebuffer + strlen (linebuffer); |
9e0b60a8 JM |
2309 | free (history_value); |
2310 | } | |
2311 | } | |
2312 | ||
2313 | /* If we just got an empty line, and that is supposed | |
2314 | to repeat the previous command, return the value in the | |
2315 | global buffer. */ | |
2316 | if (repeat && p == linebuffer) | |
2317 | return line; | |
c5aa993b | 2318 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); |
9e0b60a8 JM |
2319 | if (repeat && !*p1) |
2320 | return line; | |
2321 | ||
2322 | *p = 0; | |
2323 | ||
2324 | /* Add line to history if appropriate. */ | |
2325 | if (instream == stdin | |
2326 | && ISATTY (stdin) && *linebuffer) | |
2327 | add_history (linebuffer); | |
2328 | ||
2329 | /* Note: lines consisting solely of comments are added to the command | |
2330 | history. This is useful when you type a command, and then | |
2331 | realize you don't want to execute it quite yet. You can comment | |
2332 | out the command and then later fetch it from the value history | |
2333 | and remove the '#'. The kill ring is probably better, but some | |
2334 | people are in the habit of commenting things out. */ | |
2335 | if (*p1 == '#') | |
c5aa993b | 2336 | *p1 = '\0'; /* Found a comment. */ |
9e0b60a8 JM |
2337 | |
2338 | /* Save into global buffer if appropriate. */ | |
2339 | if (repeat) | |
2340 | { | |
2341 | if (linelength > linesize) | |
2342 | { | |
2343 | line = xrealloc (line, linelength); | |
2344 | linesize = linelength; | |
2345 | } | |
2346 | strcpy (line, linebuffer); | |
2347 | return line; | |
2348 | } | |
2349 | ||
2350 | return linebuffer; | |
2351 | } | |
2352 | \f | |
2353 | ||
2354 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
2355 | code bodies. This is typically used when we encounter an "else" | |
2356 | clause for an "if" command. */ | |
2357 | ||
2358 | static void | |
2359 | realloc_body_list (command, new_length) | |
2360 | struct command_line *command; | |
2361 | int new_length; | |
2362 | { | |
2363 | int n; | |
2364 | struct command_line **body_list; | |
2365 | ||
2366 | n = command->body_count; | |
2367 | ||
2368 | /* Nothing to do? */ | |
2369 | if (new_length <= n) | |
2370 | return; | |
2371 | ||
2372 | body_list = (struct command_line **) | |
2373 | xmalloc (sizeof (struct command_line *) * new_length); | |
2374 | ||
2375 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
2376 | ||
2377 | free (command->body_list); | |
2378 | command->body_list = body_list; | |
2379 | command->body_count = new_length; | |
2380 | } | |
2381 | ||
2382 | /* Read one line from the input stream. If the command is an "else" or | |
2383 | "end", return such an indication to the caller. */ | |
2384 | ||
2385 | static enum misc_command_type | |
2386 | read_next_line (command) | |
2387 | struct command_line **command; | |
2388 | { | |
2389 | char *p, *p1, *prompt_ptr, control_prompt[256]; | |
2390 | int i = 0; | |
2391 | ||
2392 | if (control_level >= 254) | |
2393 | error ("Control nesting too deep!\n"); | |
2394 | ||
2395 | /* Set a prompt based on the nesting of the control commands. */ | |
2396 | if (instream == stdin || (instream == 0 && readline_hook != NULL)) | |
2397 | { | |
2398 | for (i = 0; i < control_level; i++) | |
2399 | control_prompt[i] = ' '; | |
2400 | control_prompt[i] = '>'; | |
c5aa993b JM |
2401 | control_prompt[i + 1] = '\0'; |
2402 | prompt_ptr = (char *) &control_prompt[0]; | |
9e0b60a8 JM |
2403 | } |
2404 | else | |
2405 | prompt_ptr = NULL; | |
2406 | ||
2407 | p = command_line_input (prompt_ptr, instream == stdin, "commands"); | |
2408 | ||
2409 | /* Not sure what to do here. */ | |
2410 | if (p == NULL) | |
2411 | return end_command; | |
2412 | ||
2413 | /* Strip leading and trailing whitespace. */ | |
2414 | while (*p == ' ' || *p == '\t') | |
2415 | p++; | |
2416 | ||
2417 | p1 = p + strlen (p); | |
2418 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) | |
2419 | p1--; | |
2420 | ||
2421 | /* Blanks and comments don't really do anything, but we need to | |
2422 | distinguish them from else, end and other commands which can be | |
2423 | executed. */ | |
2424 | if (p1 == p || p[0] == '#') | |
2425 | return nop_command; | |
c5aa993b | 2426 | |
9e0b60a8 JM |
2427 | /* Is this the end of a simple, while, or if control structure? */ |
2428 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
2429 | return end_command; | |
2430 | ||
2431 | /* Is the else clause of an if control structure? */ | |
2432 | if (p1 - p == 4 && !strncmp (p, "else", 4)) | |
2433 | return else_command; | |
2434 | ||
2435 | /* Check for while, if, break, continue, etc and build a new command | |
2436 | line structure for them. */ | |
2437 | if (p1 - p > 5 && !strncmp (p, "while", 5)) | |
2438 | *command = build_command_line (while_control, p + 6); | |
2439 | else if (p1 - p > 2 && !strncmp (p, "if", 2)) | |
2440 | *command = build_command_line (if_control, p + 3); | |
2441 | else if (p1 - p == 10 && !strncmp (p, "loop_break", 10)) | |
2442 | { | |
2443 | *command = (struct command_line *) | |
2444 | xmalloc (sizeof (struct command_line)); | |
2445 | (*command)->next = NULL; | |
2446 | (*command)->line = NULL; | |
2447 | (*command)->control_type = break_control; | |
2448 | (*command)->body_count = 0; | |
2449 | (*command)->body_list = NULL; | |
2450 | } | |
2451 | else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13)) | |
2452 | { | |
2453 | *command = (struct command_line *) | |
2454 | xmalloc (sizeof (struct command_line)); | |
2455 | (*command)->next = NULL; | |
2456 | (*command)->line = NULL; | |
2457 | (*command)->control_type = continue_control; | |
2458 | (*command)->body_count = 0; | |
2459 | (*command)->body_list = NULL; | |
2460 | } | |
2461 | else | |
2462 | { | |
2463 | /* A normal command. */ | |
2464 | *command = (struct command_line *) | |
2465 | xmalloc (sizeof (struct command_line)); | |
2466 | (*command)->next = NULL; | |
2467 | (*command)->line = savestring (p, p1 - p); | |
2468 | (*command)->control_type = simple_control; | |
2469 | (*command)->body_count = 0; | |
2470 | (*command)->body_list = NULL; | |
c5aa993b | 2471 | } |
9e0b60a8 JM |
2472 | |
2473 | /* Nothing special. */ | |
2474 | return ok_command; | |
2475 | } | |
2476 | ||
2477 | /* Recursively read in the control structures and create a command_line | |
2478 | structure from them. | |
2479 | ||
2480 | The parent_control parameter is the control structure in which the | |
2481 | following commands are nested. */ | |
2482 | ||
2483 | static enum command_control_type | |
2484 | recurse_read_control_structure (current_cmd) | |
2485 | struct command_line *current_cmd; | |
2486 | { | |
2487 | int current_body, i; | |
2488 | enum misc_command_type val; | |
2489 | enum command_control_type ret; | |
2490 | struct command_line **body_ptr, *child_tail, *next; | |
2491 | ||
2492 | child_tail = NULL; | |
2493 | current_body = 1; | |
2494 | ||
2495 | /* Sanity checks. */ | |
2496 | if (current_cmd->control_type == simple_control) | |
2497 | { | |
2498 | error ("Recursed on a simple control type\n"); | |
2499 | return invalid_control; | |
2500 | } | |
2501 | ||
2502 | if (current_body > current_cmd->body_count) | |
2503 | { | |
2504 | error ("Allocated body is smaller than this command type needs\n"); | |
2505 | return invalid_control; | |
2506 | } | |
2507 | ||
2508 | /* Read lines from the input stream and build control structures. */ | |
2509 | while (1) | |
2510 | { | |
2511 | dont_repeat (); | |
2512 | ||
2513 | next = NULL; | |
2514 | val = read_next_line (&next); | |
2515 | ||
2516 | /* Just skip blanks and comments. */ | |
2517 | if (val == nop_command) | |
2518 | continue; | |
2519 | ||
2520 | if (val == end_command) | |
2521 | { | |
2522 | if (current_cmd->control_type == while_control | |
2523 | || current_cmd->control_type == if_control) | |
2524 | { | |
2525 | /* Success reading an entire control structure. */ | |
2526 | ret = simple_control; | |
2527 | break; | |
2528 | } | |
2529 | else | |
2530 | { | |
2531 | ret = invalid_control; | |
2532 | break; | |
2533 | } | |
2534 | } | |
c5aa993b | 2535 | |
9e0b60a8 JM |
2536 | /* Not the end of a control structure. */ |
2537 | if (val == else_command) | |
2538 | { | |
2539 | if (current_cmd->control_type == if_control | |
2540 | && current_body == 1) | |
2541 | { | |
2542 | realloc_body_list (current_cmd, 2); | |
2543 | current_body = 2; | |
2544 | child_tail = NULL; | |
2545 | continue; | |
2546 | } | |
2547 | else | |
2548 | { | |
2549 | ret = invalid_control; | |
2550 | break; | |
2551 | } | |
2552 | } | |
2553 | ||
2554 | if (child_tail) | |
2555 | { | |
2556 | child_tail->next = next; | |
2557 | } | |
2558 | else | |
2559 | { | |
2560 | body_ptr = current_cmd->body_list; | |
2561 | for (i = 1; i < current_body; i++) | |
2562 | body_ptr++; | |
2563 | ||
2564 | *body_ptr = next; | |
2565 | ||
2566 | } | |
2567 | ||
2568 | child_tail = next; | |
2569 | ||
2570 | /* If the latest line is another control structure, then recurse | |
c5aa993b | 2571 | on it. */ |
9e0b60a8 JM |
2572 | if (next->control_type == while_control |
2573 | || next->control_type == if_control) | |
2574 | { | |
2575 | control_level++; | |
2576 | ret = recurse_read_control_structure (next); | |
2577 | control_level--; | |
2578 | ||
2579 | if (ret != simple_control) | |
2580 | break; | |
2581 | } | |
2582 | } | |
2583 | ||
2584 | dont_repeat (); | |
2585 | ||
2586 | return ret; | |
2587 | } | |
2588 | ||
2589 | /* Read lines from the input stream and accumulate them in a chain of | |
2590 | struct command_line's, which is then returned. For input from a | |
2591 | terminal, the special command "end" is used to mark the end of the | |
2592 | input, and is not included in the returned chain of commands. */ | |
2593 | ||
2594 | #define END_MESSAGE "End with a line saying just \"end\"." | |
2595 | ||
2596 | struct command_line * | |
2597 | read_command_lines (prompt_arg, from_tty) | |
2598 | char *prompt_arg; | |
2599 | int from_tty; | |
2600 | { | |
2601 | struct command_line *head, *tail, *next; | |
2602 | struct cleanup *old_chain; | |
2603 | enum command_control_type ret; | |
2604 | enum misc_command_type val; | |
2605 | ||
c5aa993b | 2606 | control_level = 0; |
9e0b60a8 JM |
2607 | if (readline_begin_hook) |
2608 | { | |
2609 | /* Note - intentional to merge messages with no newline */ | |
2610 | (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE); | |
2611 | } | |
2612 | else if (from_tty && input_from_terminal_p ()) | |
2613 | { | |
2614 | printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE); | |
2615 | gdb_flush (gdb_stdout); | |
2616 | } | |
2617 | ||
2618 | head = tail = NULL; | |
2619 | old_chain = NULL; | |
2620 | ||
2621 | while (1) | |
2622 | { | |
2623 | val = read_next_line (&next); | |
2624 | ||
2625 | /* Ignore blank lines or comments. */ | |
2626 | if (val == nop_command) | |
2627 | continue; | |
2628 | ||
2629 | if (val == end_command) | |
2630 | { | |
2631 | ret = simple_control; | |
2632 | break; | |
2633 | } | |
2634 | ||
2635 | if (val != ok_command) | |
2636 | { | |
2637 | ret = invalid_control; | |
2638 | break; | |
2639 | } | |
2640 | ||
2641 | if (next->control_type == while_control | |
2642 | || next->control_type == if_control) | |
2643 | { | |
2644 | control_level++; | |
2645 | ret = recurse_read_control_structure (next); | |
2646 | control_level--; | |
2647 | ||
2648 | if (ret == invalid_control) | |
2649 | break; | |
2650 | } | |
c5aa993b | 2651 | |
9e0b60a8 JM |
2652 | if (tail) |
2653 | { | |
2654 | tail->next = next; | |
2655 | } | |
2656 | else | |
2657 | { | |
2658 | head = next; | |
c5aa993b JM |
2659 | old_chain = make_cleanup ((make_cleanup_func) free_command_lines, |
2660 | &head); | |
9e0b60a8 JM |
2661 | } |
2662 | tail = next; | |
2663 | } | |
2664 | ||
2665 | dont_repeat (); | |
2666 | ||
2667 | if (head) | |
2668 | { | |
2669 | if (ret != invalid_control) | |
2670 | { | |
2671 | discard_cleanups (old_chain); | |
2672 | } | |
2673 | else | |
2674 | do_cleanups (old_chain); | |
2675 | } | |
2676 | ||
2677 | if (readline_end_hook) | |
2678 | { | |
2679 | (*readline_end_hook) (); | |
2680 | } | |
2681 | return (head); | |
2682 | } | |
2683 | ||
2684 | /* Free a chain of struct command_line's. */ | |
2685 | ||
2686 | void | |
2687 | free_command_lines (lptr) | |
c5aa993b | 2688 | struct command_line **lptr; |
9e0b60a8 JM |
2689 | { |
2690 | register struct command_line *l = *lptr; | |
2691 | register struct command_line *next; | |
2692 | struct command_line **blist; | |
2693 | int i; | |
2694 | ||
2695 | while (l) | |
2696 | { | |
2697 | if (l->body_count > 0) | |
2698 | { | |
2699 | blist = l->body_list; | |
2700 | for (i = 0; i < l->body_count; i++, blist++) | |
2701 | free_command_lines (blist); | |
2702 | } | |
2703 | next = l->next; | |
2704 | free (l->line); | |
c5aa993b | 2705 | free ((PTR) l); |
9e0b60a8 JM |
2706 | l = next; |
2707 | } | |
2708 | } | |
2709 | \f | |
2710 | /* Add an element to the list of info subcommands. */ | |
2711 | ||
2712 | void | |
2713 | add_info (name, fun, doc) | |
2714 | char *name; | |
2715 | void (*fun) PARAMS ((char *, int)); | |
2716 | char *doc; | |
2717 | { | |
2718 | add_cmd (name, no_class, fun, doc, &infolist); | |
2719 | } | |
2720 | ||
2721 | /* Add an alias to the list of info subcommands. */ | |
2722 | ||
2723 | void | |
2724 | add_info_alias (name, oldname, abbrev_flag) | |
2725 | char *name; | |
2726 | char *oldname; | |
2727 | int abbrev_flag; | |
2728 | { | |
2729 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
2730 | } | |
2731 | ||
2732 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2733 | Therefore, its own definition is called only for "info" with no args. */ | |
2734 | ||
2735 | /* ARGSUSED */ | |
2736 | static void | |
2737 | info_command (arg, from_tty) | |
2738 | char *arg; | |
2739 | int from_tty; | |
2740 | { | |
2741 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); | |
2742 | help_list (infolist, "info ", -1, gdb_stdout); | |
2743 | } | |
2744 | ||
2745 | /* The "complete" command is used by Emacs to implement completion. */ | |
2746 | ||
2747 | /* ARGSUSED */ | |
2748 | static void | |
2749 | complete_command (arg, from_tty) | |
2750 | char *arg; | |
2751 | int from_tty; | |
2752 | { | |
2753 | int i; | |
2754 | int argpoint; | |
2755 | char *completion; | |
2756 | ||
2757 | dont_repeat (); | |
2758 | ||
2759 | if (arg == NULL) | |
2760 | arg = ""; | |
2761 | argpoint = strlen (arg); | |
2762 | ||
2763 | for (completion = line_completion_function (arg, i = 0, arg, argpoint); | |
2764 | completion; | |
2765 | completion = line_completion_function (arg, ++i, arg, argpoint)) | |
2766 | { | |
2767 | printf_unfiltered ("%s\n", completion); | |
2768 | free (completion); | |
2769 | } | |
2770 | } | |
2771 | ||
2772 | /* The "show" command with no arguments shows all the settings. */ | |
2773 | ||
2774 | /* ARGSUSED */ | |
2775 | static void | |
2776 | show_command (arg, from_tty) | |
2777 | char *arg; | |
2778 | int from_tty; | |
2779 | { | |
2780 | cmd_show_list (showlist, from_tty, ""); | |
2781 | } | |
2782 | \f | |
2783 | /* Add an element to the list of commands. */ | |
2784 | ||
2785 | void | |
2786 | add_com (name, class, fun, doc) | |
2787 | char *name; | |
2788 | enum command_class class; | |
2789 | void (*fun) PARAMS ((char *, int)); | |
2790 | char *doc; | |
2791 | { | |
2792 | add_cmd (name, class, fun, doc, &cmdlist); | |
2793 | } | |
2794 | ||
2795 | /* Add an alias or abbreviation command to the list of commands. */ | |
2796 | ||
2797 | void | |
2798 | add_com_alias (name, oldname, class, abbrev_flag) | |
2799 | char *name; | |
2800 | char *oldname; | |
2801 | enum command_class class; | |
2802 | int abbrev_flag; | |
2803 | { | |
2804 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
2805 | } | |
2806 | ||
2807 | void | |
2808 | error_no_arg (why) | |
2809 | char *why; | |
2810 | { | |
2811 | error ("Argument required (%s).", why); | |
2812 | } | |
2813 | ||
2814 | /* ARGSUSED */ | |
2815 | static void | |
2816 | help_command (command, from_tty) | |
2817 | char *command; | |
c5aa993b | 2818 | int from_tty; /* Ignored */ |
9e0b60a8 JM |
2819 | { |
2820 | help_cmd (command, gdb_stdout); | |
2821 | } | |
2822 | \f | |
2823 | static void | |
2824 | validate_comname (comname) | |
2825 | char *comname; | |
2826 | { | |
2827 | register char *p; | |
2828 | ||
2829 | if (comname == 0) | |
2830 | error_no_arg ("name of command to define"); | |
2831 | ||
2832 | p = comname; | |
2833 | while (*p) | |
2834 | { | |
c5aa993b | 2835 | if (!isalnum (*p) && *p != '-' && *p != '_') |
9e0b60a8 JM |
2836 | error ("Junk in argument list: \"%s\"", p); |
2837 | p++; | |
2838 | } | |
2839 | } | |
2840 | ||
2841 | /* This is just a placeholder in the command data structures. */ | |
2842 | static void | |
2843 | user_defined_command (ignore, from_tty) | |
2844 | char *ignore; | |
2845 | int from_tty; | |
2846 | { | |
2847 | } | |
2848 | ||
2849 | static void | |
2850 | define_command (comname, from_tty) | |
2851 | char *comname; | |
2852 | int from_tty; | |
2853 | { | |
2854 | register struct command_line *cmds; | |
2855 | register struct cmd_list_element *c, *newc, *hookc = 0; | |
2856 | char *tem = comname; | |
2857 | char tmpbuf[128]; | |
2858 | #define HOOK_STRING "hook-" | |
2859 | #define HOOK_LEN 5 | |
2860 | ||
2861 | validate_comname (comname); | |
2862 | ||
2863 | /* Look it up, and verify that we got an exact match. */ | |
2864 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); | |
2865 | if (c && !STREQ (comname, c->name)) | |
2866 | c = 0; | |
2867 | ||
2868 | if (c) | |
2869 | { | |
2870 | if (c->class == class_user || c->class == class_alias) | |
2871 | tem = "Redefine command \"%s\"? "; | |
2872 | else | |
2873 | tem = "Really redefine built-in command \"%s\"? "; | |
2874 | if (!query (tem, c->name)) | |
2875 | error ("Command \"%s\" not redefined.", c->name); | |
2876 | } | |
2877 | ||
2878 | /* If this new command is a hook, then mark the command which it | |
2879 | is hooking. Note that we allow hooking `help' commands, so that | |
2880 | we can hook the `stop' pseudo-command. */ | |
2881 | ||
2882 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2883 | { | |
2884 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
c5aa993b | 2885 | tem = comname + HOOK_LEN; |
9e0b60a8 | 2886 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); |
c5aa993b | 2887 | if (hookc && !STREQ (comname + HOOK_LEN, hookc->name)) |
9e0b60a8 JM |
2888 | hookc = 0; |
2889 | if (!hookc) | |
2890 | { | |
2891 | warning ("Your new `%s' command does not hook any existing command.", | |
2892 | comname); | |
2893 | if (!query ("Proceed? ")) | |
2894 | error ("Not confirmed."); | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | comname = savestring (comname, strlen (comname)); | |
2899 | ||
2900 | /* If the rest of the commands will be case insensitive, this one | |
2901 | should behave in the same manner. */ | |
2902 | for (tem = comname; *tem; tem++) | |
c5aa993b JM |
2903 | if (isupper (*tem)) |
2904 | *tem = tolower (*tem); | |
9e0b60a8 JM |
2905 | |
2906 | sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname); | |
2907 | cmds = read_command_lines (tmpbuf, from_tty); | |
2908 | ||
2909 | if (c && c->class == class_user) | |
2910 | free_command_lines (&c->user_commands); | |
2911 | ||
2912 | newc = add_cmd (comname, class_user, user_defined_command, | |
c5aa993b JM |
2913 | (c && c->class == class_user) |
2914 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
9e0b60a8 JM |
2915 | newc->user_commands = cmds; |
2916 | ||
2917 | /* If this new command is a hook, then mark both commands as being | |
2918 | tied. */ | |
2919 | if (hookc) | |
2920 | { | |
2921 | hookc->hook = newc; /* Target gets hooked. */ | |
2922 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2923 | } | |
2924 | } | |
2925 | ||
2926 | static void | |
2927 | document_command (comname, from_tty) | |
2928 | char *comname; | |
2929 | int from_tty; | |
2930 | { | |
2931 | struct command_line *doclines; | |
2932 | register struct cmd_list_element *c; | |
2933 | char *tem = comname; | |
2934 | char tmpbuf[128]; | |
2935 | ||
2936 | validate_comname (comname); | |
2937 | ||
2938 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2939 | ||
2940 | if (c->class != class_user) | |
2941 | error ("Command \"%s\" is built-in.", comname); | |
2942 | ||
2943 | sprintf (tmpbuf, "Type documentation for \"%s\".", comname); | |
2944 | doclines = read_command_lines (tmpbuf, from_tty); | |
2945 | ||
c5aa993b JM |
2946 | if (c->doc) |
2947 | free (c->doc); | |
9e0b60a8 JM |
2948 | |
2949 | { | |
2950 | register struct command_line *cl1; | |
2951 | register int len = 0; | |
2952 | ||
2953 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2954 | len += strlen (cl1->line) + 1; | |
2955 | ||
2956 | c->doc = (char *) xmalloc (len + 1); | |
2957 | *c->doc = 0; | |
2958 | ||
2959 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2960 | { | |
2961 | strcat (c->doc, cl1->line); | |
2962 | if (cl1->next) | |
2963 | strcat (c->doc, "\n"); | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | free_command_lines (&doclines); | |
2968 | } | |
2969 | \f | |
2970 | /* Print the GDB banner. */ | |
2971 | void | |
2972 | print_gdb_version (stream) | |
c5aa993b | 2973 | GDB_FILE *stream; |
9e0b60a8 JM |
2974 | { |
2975 | /* From GNU coding standards, first line is meant to be easy for a | |
2976 | program to parse, and is just canonical program name and version | |
2977 | number, which starts after last space. */ | |
2978 | ||
2979 | fprintf_filtered (stream, "GNU gdb %s\n", version); | |
2980 | ||
2981 | /* Second line is a copyright notice. */ | |
2982 | ||
2983 | fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n"); | |
2984 | ||
2985 | /* Following the copyright is a brief statement that the program is | |
2986 | free software, that users are free to copy and change it on | |
2987 | certain conditions, that it is covered by the GNU GPL, and that | |
2988 | there is no warranty. */ | |
2989 | ||
2990 | fprintf_filtered (stream, "\ | |
2991 | GDB is free software, covered by the GNU General Public License, and you are\n\ | |
2992 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
2993 | Type \"show copying\" to see the conditions.\n\ | |
2994 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
2995 | ||
2996 | /* After the required info we print the configuration information. */ | |
2997 | ||
2998 | fprintf_filtered (stream, "This GDB was configured as \""); | |
2999 | if (!STREQ (host_name, target_name)) | |
3000 | { | |
3001 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
3002 | } | |
3003 | else | |
3004 | { | |
3005 | fprintf_filtered (stream, "%s", host_name); | |
3006 | } | |
3007 | fprintf_filtered (stream, "\"."); | |
3008 | } | |
3009 | ||
3010 | /* ARGSUSED */ | |
3011 | static void | |
3012 | show_version (args, from_tty) | |
3013 | char *args; | |
3014 | int from_tty; | |
3015 | { | |
3016 | immediate_quit++; | |
3017 | print_gdb_version (gdb_stdout); | |
3018 | printf_filtered ("\n"); | |
3019 | immediate_quit--; | |
3020 | } | |
3021 | \f | |
3022 | /* get_prompt: access method for the GDB prompt string. */ | |
3023 | ||
3024 | #define MAX_PROMPT_SIZE 256 | |
3025 | ||
3026 | /* | |
3027 | * int get_prompt_1 (char * buf); | |
3028 | * | |
3029 | * Work-horse for get_prompt (called via catch_errors). | |
3030 | * Argument is buffer to hold the formatted prompt. | |
3031 | * | |
3032 | * Returns: 1 for success (use formatted prompt) | |
3033 | * 0 for failure (use gdb_prompt_string). | |
c5aa993b | 3034 | */ |
9e0b60a8 JM |
3035 | |
3036 | static int gdb_prompt_escape; | |
3037 | ||
3038 | static int | |
3039 | get_prompt_1 (formatted_prompt) | |
3040 | char *formatted_prompt; | |
3041 | { | |
3042 | char *local_prompt; | |
3043 | ||
6426a772 | 3044 | if (event_loop_p) |
9e0b60a8 JM |
3045 | local_prompt = PROMPT (0); |
3046 | else | |
3047 | local_prompt = gdb_prompt_string; | |
3048 | ||
3049 | ||
3050 | if (gdb_prompt_escape == 0) | |
3051 | { | |
c5aa993b | 3052 | return 0; /* do no formatting */ |
9e0b60a8 | 3053 | } |
c5aa993b JM |
3054 | else |
3055 | /* formatted prompt */ | |
9e0b60a8 | 3056 | { |
c5aa993b | 3057 | char fmt[40], *promptp, *outp, *tmp; |
9e0b60a8 | 3058 | value_ptr arg_val; |
c5aa993b JM |
3059 | DOUBLEST doubleval; |
3060 | LONGEST longval; | |
9e0b60a8 JM |
3061 | CORE_ADDR addrval; |
3062 | ||
3063 | int i, len; | |
3064 | struct type *arg_type, *elt_type; | |
3065 | ||
3066 | promptp = local_prompt; | |
c5aa993b | 3067 | outp = formatted_prompt; |
9e0b60a8 JM |
3068 | |
3069 | while (*promptp != '\0') | |
3070 | { | |
3071 | int available = MAX_PROMPT_SIZE - (outp - formatted_prompt) - 1; | |
3072 | ||
3073 | if (*promptp != gdb_prompt_escape) | |
3074 | { | |
c5aa993b | 3075 | if (available >= 1) /* overflow protect */ |
9e0b60a8 JM |
3076 | *outp++ = *promptp++; |
3077 | } | |
3078 | else | |
3079 | { | |
3080 | /* GDB prompt string contains escape char. Parse for arg. | |
c5aa993b JM |
3081 | Two consecutive escape chars followed by arg followed by |
3082 | a comma means to insert the arg using a default format. | |
3083 | Otherwise a printf format string may be included between | |
3084 | the two escape chars. eg: | |
3085 | %%foo, insert foo using default format | |
3086 | %2.2f%foo, insert foo using "%2.2f" format | |
3087 | A mismatch between the format string and the data type | |
3088 | of "foo" is an error (which we don't know how to protect | |
3089 | against). */ | |
9e0b60a8 JM |
3090 | |
3091 | fmt[0] = '\0'; /* assume null format string */ | |
3092 | if (promptp[1] == gdb_prompt_escape) /* double esc char */ | |
3093 | { | |
3094 | promptp += 2; /* skip past two escape chars. */ | |
3095 | } | |
3096 | else | |
3097 | { | |
3098 | /* extract format string from between two esc chars */ | |
3099 | i = 0; | |
c5aa993b JM |
3100 | do |
3101 | { | |
3102 | fmt[i++] = *promptp++; /* copy format string */ | |
3103 | } | |
3104 | while (i < sizeof (fmt) - 1 && | |
3105 | *promptp != gdb_prompt_escape && | |
3106 | *promptp != '\0'); | |
9e0b60a8 JM |
3107 | |
3108 | if (*promptp != gdb_prompt_escape) | |
3109 | error ("Syntax error at prompt position %d", | |
3110 | promptp - local_prompt); | |
3111 | else | |
3112 | { | |
3113 | promptp++; /* skip second escape char */ | |
3114 | fmt[i++] = '\0'; /* terminate the format string */ | |
3115 | } | |
3116 | } | |
3117 | ||
3118 | arg_val = parse_to_comma_and_eval (&promptp); | |
3119 | if (*promptp == ',') | |
c5aa993b | 3120 | promptp++; /* skip past the comma */ |
9e0b60a8 | 3121 | arg_type = check_typedef (VALUE_TYPE (arg_val)); |
c5aa993b | 3122 | switch (TYPE_CODE (arg_type)) |
9e0b60a8 JM |
3123 | { |
3124 | case TYPE_CODE_ARRAY: | |
3125 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
c5aa993b | 3126 | if (TYPE_LENGTH (arg_type) > 0 && |
9e0b60a8 JM |
3127 | TYPE_LENGTH (elt_type) == 1 && |
3128 | TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
3129 | { | |
3130 | int len = TYPE_LENGTH (arg_type); | |
3131 | ||
3132 | if (VALUE_LAZY (arg_val)) | |
3133 | value_fetch_lazy (arg_val); | |
3134 | tmp = VALUE_CONTENTS (arg_val); | |
3135 | ||
3136 | if (len > available) | |
c5aa993b | 3137 | len = available; /* overflow protect */ |
9e0b60a8 JM |
3138 | |
3139 | /* FIXME: how to protect GDB from crashing | |
c5aa993b | 3140 | from bad user-supplied format string? */ |
9e0b60a8 JM |
3141 | if (fmt[0] != 0) |
3142 | sprintf (outp, fmt, tmp); | |
3143 | else | |
3144 | strncpy (outp, tmp, len); | |
3145 | outp[len] = '\0'; | |
3146 | } | |
3147 | break; | |
3148 | case TYPE_CODE_PTR: | |
3149 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
3150 | addrval = value_as_pointer (arg_val); | |
3151 | ||
3152 | if (TYPE_LENGTH (elt_type) == 1 && | |
c5aa993b | 3153 | TYPE_CODE (elt_type) == TYPE_CODE_INT && |
9e0b60a8 JM |
3154 | addrval != 0) |
3155 | { | |
3156 | /* display it as a string */ | |
3157 | char *default_fmt = "%s"; | |
3158 | char *tmp; | |
3159 | int err = 0; | |
3160 | ||
3161 | /* Limiting the number of bytes that the following call | |
c5aa993b JM |
3162 | will read protects us from sprintf overflow later. */ |
3163 | i = target_read_string (addrval, /* src */ | |
3164 | &tmp, /* dest */ | |
3165 | available, /* len */ | |
9e0b60a8 JM |
3166 | &err); |
3167 | if (err) /* read failed */ | |
3168 | error ("%s on target_read", safe_strerror (err)); | |
3169 | ||
3170 | tmp[i] = '\0'; /* force-terminate string */ | |
3171 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
3172 | from bad user-supplied format string? */ |
3173 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, | |
9e0b60a8 JM |
3174 | tmp); |
3175 | free (tmp); | |
3176 | } | |
3177 | else | |
3178 | { | |
3179 | /* display it as a pointer */ | |
3180 | char *default_fmt = "0x%x"; | |
3181 | ||
3182 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
3183 | from bad user-supplied format string? */ |
3184 | if (available >= 16 /*? */ ) /* overflow protect */ | |
9e0b60a8 JM |
3185 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3186 | (long) addrval); | |
3187 | } | |
3188 | break; | |
3189 | case TYPE_CODE_FLT: | |
3190 | { | |
3191 | char *default_fmt = "%g"; | |
3192 | ||
3193 | doubleval = value_as_double (arg_val); | |
3194 | /* FIXME: how to protect GDB from crashing | |
3195 | from bad user-supplied format string? */ | |
c5aa993b | 3196 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3197 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3198 | (double) doubleval); | |
3199 | break; | |
3200 | } | |
3201 | case TYPE_CODE_INT: | |
3202 | { | |
3203 | char *default_fmt = "%d"; | |
3204 | ||
3205 | longval = value_as_long (arg_val); | |
3206 | /* FIXME: how to protect GDB from crashing | |
3207 | from bad user-supplied format string? */ | |
c5aa993b | 3208 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3209 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3210 | (long) longval); | |
3211 | break; | |
3212 | } | |
3213 | case TYPE_CODE_BOOL: | |
3214 | { | |
3215 | /* no default format for bool */ | |
3216 | longval = value_as_long (arg_val); | |
c5aa993b | 3217 | if (available >= 8 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3218 | { |
3219 | if (longval) | |
3220 | strcpy (outp, "<true>"); | |
3221 | else | |
3222 | strcpy (outp, "<false>"); | |
3223 | } | |
3224 | break; | |
3225 | } | |
3226 | case TYPE_CODE_ENUM: | |
3227 | { | |
3228 | /* no default format for enum */ | |
3229 | longval = value_as_long (arg_val); | |
3230 | len = TYPE_NFIELDS (arg_type); | |
3231 | /* find enum name if possible */ | |
3232 | for (i = 0; i < len; i++) | |
3233 | if (TYPE_FIELD_BITPOS (arg_type, i) == longval) | |
c5aa993b | 3234 | break; /* match -- end loop */ |
9e0b60a8 JM |
3235 | |
3236 | if (i < len) /* enum name found */ | |
3237 | { | |
3238 | char *name = TYPE_FIELD_NAME (arg_type, i); | |
3239 | ||
3240 | strncpy (outp, name, available); | |
3241 | /* in casel available < strlen (name), */ | |
3242 | outp[available] = '\0'; | |
3243 | } | |
3244 | else | |
3245 | { | |
c5aa993b | 3246 | if (available >= 16 /*? */ ) /* overflow protect */ |
d4f3574e | 3247 | sprintf (outp, "%ld", (long) longval); |
9e0b60a8 JM |
3248 | } |
3249 | break; | |
3250 | } | |
3251 | case TYPE_CODE_VOID: | |
3252 | *outp = '\0'; | |
3253 | break; /* void type -- no output */ | |
3254 | default: | |
3255 | error ("bad data type at prompt position %d", | |
3256 | promptp - local_prompt); | |
3257 | break; | |
3258 | } | |
3259 | outp += strlen (outp); | |
3260 | } | |
3261 | } | |
3262 | *outp++ = '\0'; /* terminate prompt string */ | |
3263 | return 1; | |
3264 | } | |
3265 | } | |
3266 | ||
3267 | char * | |
3268 | get_prompt () | |
3269 | { | |
3270 | static char buf[MAX_PROMPT_SIZE]; | |
3271 | ||
c5aa993b | 3272 | if (catch_errors (get_prompt_1, buf, "bad formatted prompt: ", |
9e0b60a8 JM |
3273 | RETURN_MASK_ALL)) |
3274 | { | |
c5aa993b | 3275 | return &buf[0]; /* successful formatted prompt */ |
9e0b60a8 JM |
3276 | } |
3277 | else | |
3278 | { | |
3279 | /* Prompt could not be formatted. */ | |
6426a772 | 3280 | if (event_loop_p) |
9e0b60a8 JM |
3281 | return PROMPT (0); |
3282 | else | |
3283 | return gdb_prompt_string; | |
3284 | } | |
3285 | } | |
3286 | ||
3287 | void | |
3288 | set_prompt (s) | |
3289 | char *s; | |
3290 | { | |
3291 | /* ??rehrauer: I don't know why this fails, since it looks as though | |
3292 | assignments to prompt are wrapped in calls to savestring... | |
c5aa993b JM |
3293 | if (prompt != NULL) |
3294 | free (prompt); | |
3295 | */ | |
6426a772 | 3296 | if (event_loop_p) |
9e0b60a8 JM |
3297 | PROMPT (0) = savestring (s, strlen (s)); |
3298 | else | |
3299 | gdb_prompt_string = savestring (s, strlen (s)); | |
3300 | } | |
9e0b60a8 | 3301 | \f |
c5aa993b | 3302 | |
9e0b60a8 JM |
3303 | /* If necessary, make the user confirm that we should quit. Return |
3304 | non-zero if we should quit, zero if we shouldn't. */ | |
3305 | ||
3306 | int | |
3307 | quit_confirm () | |
3308 | { | |
3309 | if (inferior_pid != 0 && target_has_execution) | |
3310 | { | |
3311 | char *s; | |
3312 | ||
3313 | /* This is something of a hack. But there's no reliable way to | |
c5aa993b JM |
3314 | see if a GUI is running. The `use_windows' variable doesn't |
3315 | cut it. */ | |
9e0b60a8 JM |
3316 | if (init_ui_hook) |
3317 | s = "A debugging session is active.\nDo you still want to close the debugger?"; | |
3318 | else if (attach_flag) | |
3319 | s = "The program is running. Quit anyway (and detach it)? "; | |
3320 | else | |
3321 | s = "The program is running. Exit anyway? "; | |
3322 | ||
c5aa993b | 3323 | if (!query (s)) |
9e0b60a8 JM |
3324 | return 0; |
3325 | } | |
3326 | ||
3327 | return 1; | |
3328 | } | |
3329 | ||
3330 | /* Quit without asking for confirmation. */ | |
3331 | ||
3332 | void | |
3333 | quit_force (args, from_tty) | |
3334 | char *args; | |
3335 | int from_tty; | |
3336 | { | |
3337 | int exit_code = 0; | |
3338 | ||
3339 | /* An optional expression may be used to cause gdb to terminate with the | |
3340 | value of that expression. */ | |
3341 | if (args) | |
3342 | { | |
3343 | value_ptr val = parse_and_eval (args); | |
3344 | ||
3345 | exit_code = (int) value_as_long (val); | |
3346 | } | |
3347 | ||
3348 | if (inferior_pid != 0 && target_has_execution) | |
3349 | { | |
3350 | if (attach_flag) | |
3351 | target_detach (args, from_tty); | |
3352 | else | |
3353 | target_kill (); | |
3354 | } | |
3355 | ||
3356 | /* UDI wants this, to kill the TIP. */ | |
3357 | target_close (1); | |
3358 | ||
3359 | /* Save the history information if it is appropriate to do so. */ | |
3360 | if (write_history_p && history_filename) | |
3361 | write_history (history_filename); | |
3362 | ||
c5aa993b | 3363 | do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
9e0b60a8 JM |
3364 | |
3365 | #if defined(TUI) | |
3366 | /* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */ | |
3367 | /* The above does not need to be inside a tuiDo(), since | |
3368 | * it is not manipulating the curses screen, but rather, | |
3369 | * it is tearing it down. | |
3370 | */ | |
3371 | if (tui_version) | |
c5aa993b | 3372 | tuiCleanUp (); |
9e0b60a8 JM |
3373 | #endif |
3374 | ||
3375 | exit (exit_code); | |
3376 | } | |
3377 | ||
3378 | /* Handle the quit command. */ | |
3379 | ||
3380 | void | |
3381 | quit_command (args, from_tty) | |
3382 | char *args; | |
3383 | int from_tty; | |
3384 | { | |
c5aa993b | 3385 | if (!quit_confirm ()) |
9e0b60a8 JM |
3386 | error ("Not confirmed."); |
3387 | quit_force (args, from_tty); | |
3388 | } | |
3389 | ||
3390 | /* Returns whether GDB is running on a terminal and whether the user | |
3391 | desires that questions be asked of them on that terminal. */ | |
3392 | ||
3393 | int | |
3394 | input_from_terminal_p () | |
3395 | { | |
3396 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
3397 | } | |
3398 | \f | |
3399 | /* ARGSUSED */ | |
3400 | static void | |
3401 | pwd_command (args, from_tty) | |
3402 | char *args; | |
3403 | int from_tty; | |
3404 | { | |
c5aa993b JM |
3405 | if (args) |
3406 | error ("The \"pwd\" command does not take an argument: %s", args); | |
9e0b60a8 JM |
3407 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
3408 | ||
3409 | if (!STREQ (gdb_dirbuf, current_directory)) | |
3410 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", | |
c5aa993b | 3411 | current_directory, gdb_dirbuf); |
9e0b60a8 JM |
3412 | else |
3413 | printf_unfiltered ("Working directory %s.\n", current_directory); | |
3414 | } | |
3415 | ||
3416 | void | |
3417 | cd_command (dir, from_tty) | |
3418 | char *dir; | |
3419 | int from_tty; | |
3420 | { | |
3421 | int len; | |
3422 | /* Found something other than leading repetitions of "/..". */ | |
3423 | int found_real_path; | |
3424 | char *p; | |
3425 | ||
3426 | /* If the new directory is absolute, repeat is a no-op; if relative, | |
3427 | repeat might be useful but is more likely to be a mistake. */ | |
3428 | dont_repeat (); | |
3429 | ||
3430 | if (dir == 0) | |
3431 | error_no_arg ("new working directory"); | |
3432 | ||
3433 | dir = tilde_expand (dir); | |
3434 | make_cleanup (free, dir); | |
3435 | ||
3436 | if (chdir (dir) < 0) | |
3437 | perror_with_name (dir); | |
3438 | ||
a0b3c4fd JM |
3439 | #if defined(_WIN32) || defined(__MSDOS__) |
3440 | /* There's too much mess with DOSish names like "d:", "d:.", | |
3441 | "d:./foo" etc. Instead of having lots of special #ifdef'ed code, | |
3442 | simply get the canonicalized name of the current directory. */ | |
3443 | dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
3444 | #endif | |
3445 | ||
9e0b60a8 | 3446 | len = strlen (dir); |
a0b3c4fd JM |
3447 | if (SLASH_P (dir[len-1])) |
3448 | { | |
3449 | /* Remove the trailing slash unless this is a root directory | |
3450 | (including a drive letter on non-Unix systems). */ | |
3451 | if (!(len == 1) /* "/" */ | |
3452 | #if defined(_WIN32) || defined(__MSDOS__) | |
3453 | && !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */ | |
3454 | #endif | |
3455 | ) | |
3456 | len--; | |
3457 | } | |
3458 | ||
3459 | dir = savestring (dir, len); | |
c5aa993b | 3460 | if (ROOTED_P (dir)) |
9e0b60a8 JM |
3461 | current_directory = dir; |
3462 | else | |
3463 | { | |
a0b3c4fd | 3464 | if (SLASH_P (current_directory[strlen (current_directory) - 1])) |
9e0b60a8 JM |
3465 | current_directory = concat (current_directory, dir, NULL); |
3466 | else | |
3467 | current_directory = concat (current_directory, SLASH_STRING, dir, NULL); | |
3468 | free (dir); | |
3469 | } | |
3470 | ||
3471 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
3472 | ||
3473 | found_real_path = 0; | |
3474 | for (p = current_directory; *p;) | |
3475 | { | |
3476 | if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2]))) | |
3477 | strcpy (p, p + 2); | |
3478 | else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.' | |
3479 | && (p[3] == 0 || SLASH_P (p[3]))) | |
3480 | { | |
3481 | if (found_real_path) | |
3482 | { | |
3483 | /* Search backwards for the directory just before the "/.." | |
c5aa993b | 3484 | and obliterate it and the "/..". */ |
9e0b60a8 | 3485 | char *q = p; |
c5aa993b | 3486 | while (q != current_directory && !SLASH_P (q[-1])) |
9e0b60a8 JM |
3487 | --q; |
3488 | ||
3489 | if (q == current_directory) | |
3490 | /* current_directory is | |
3491 | a relative pathname ("can't happen"--leave it alone). */ | |
3492 | ++p; | |
3493 | else | |
3494 | { | |
3495 | strcpy (q - 1, p + 3); | |
3496 | p = q - 1; | |
3497 | } | |
3498 | } | |
3499 | else | |
3500 | /* We are dealing with leading repetitions of "/..", for example | |
3501 | "/../..", which is the Mach super-root. */ | |
3502 | p += 3; | |
3503 | } | |
3504 | else | |
3505 | { | |
3506 | found_real_path = 1; | |
3507 | ++p; | |
3508 | } | |
3509 | } | |
3510 | ||
3511 | forget_cached_source_info (); | |
3512 | ||
3513 | if (from_tty) | |
3514 | pwd_command ((char *) 0, 1); | |
3515 | } | |
3516 | \f | |
c5aa993b JM |
3517 | struct source_cleanup_lines_args |
3518 | { | |
9e0b60a8 JM |
3519 | int old_line; |
3520 | char *old_file; | |
3521 | char *old_pre_error; | |
3522 | char *old_error_pre_print; | |
3523 | }; | |
3524 | ||
3525 | static void | |
3526 | source_cleanup_lines (args) | |
3527 | PTR args; | |
3528 | { | |
3529 | struct source_cleanup_lines_args *p = | |
c5aa993b | 3530 | (struct source_cleanup_lines_args *) args; |
9e0b60a8 JM |
3531 | source_line_number = p->old_line; |
3532 | source_file_name = p->old_file; | |
3533 | source_pre_error = p->old_pre_error; | |
3534 | error_pre_print = p->old_error_pre_print; | |
3535 | } | |
3536 | ||
3537 | /* ARGSUSED */ | |
3538 | void | |
3539 | source_command (args, from_tty) | |
3540 | char *args; | |
3541 | int from_tty; | |
3542 | { | |
3543 | FILE *stream; | |
3544 | struct cleanup *old_cleanups; | |
3545 | char *file = args; | |
3546 | struct source_cleanup_lines_args old_lines; | |
3547 | int needed_length; | |
3548 | ||
3549 | if (file == NULL) | |
3550 | { | |
3551 | error ("source command requires pathname of file to source."); | |
3552 | } | |
3553 | ||
3554 | file = tilde_expand (file); | |
3555 | old_cleanups = make_cleanup (free, file); | |
3556 | ||
3557 | stream = fopen (file, FOPEN_RT); | |
3558 | if (!stream) | |
3559 | { | |
3560 | if (from_tty) | |
3561 | perror_with_name (file); | |
3562 | else | |
3563 | return; | |
3564 | } | |
3565 | ||
3566 | make_cleanup ((make_cleanup_func) fclose, stream); | |
3567 | ||
3568 | old_lines.old_line = source_line_number; | |
3569 | old_lines.old_file = source_file_name; | |
3570 | old_lines.old_pre_error = source_pre_error; | |
3571 | old_lines.old_error_pre_print = error_pre_print; | |
3572 | make_cleanup (source_cleanup_lines, &old_lines); | |
3573 | source_line_number = 0; | |
3574 | source_file_name = file; | |
3575 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
3576 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
3577 | make_cleanup (free, source_pre_error); | |
3578 | /* This will get set every time we read a line. So it won't stay "" for | |
3579 | long. */ | |
3580 | error_pre_print = ""; | |
3581 | ||
3582 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
3583 | if (source_error_allocated < needed_length) | |
3584 | { | |
3585 | source_error_allocated *= 2; | |
3586 | if (source_error_allocated < needed_length) | |
3587 | source_error_allocated = needed_length; | |
3588 | if (source_error == NULL) | |
3589 | source_error = xmalloc (source_error_allocated); | |
3590 | else | |
3591 | source_error = xrealloc (source_error, source_error_allocated); | |
3592 | } | |
3593 | ||
3594 | read_command_file (stream); | |
3595 | ||
3596 | do_cleanups (old_cleanups); | |
3597 | } | |
3598 | ||
3599 | /* ARGSUSED */ | |
3600 | static void | |
3601 | echo_command (text, from_tty) | |
3602 | char *text; | |
3603 | int from_tty; | |
3604 | { | |
3605 | char *p = text; | |
3606 | register int c; | |
3607 | ||
3608 | if (text) | |
3609 | while ((c = *p++) != '\0') | |
3610 | { | |
3611 | if (c == '\\') | |
3612 | { | |
3613 | /* \ at end of argument is used after spaces | |
3614 | so they won't be lost. */ | |
3615 | if (*p == 0) | |
3616 | return; | |
3617 | ||
3618 | c = parse_escape (&p); | |
3619 | if (c >= 0) | |
3620 | printf_filtered ("%c", c); | |
3621 | } | |
3622 | else | |
3623 | printf_filtered ("%c", c); | |
3624 | } | |
3625 | ||
3626 | /* Force this output to appear now. */ | |
3627 | wrap_here (""); | |
3628 | gdb_flush (gdb_stdout); | |
3629 | } | |
3630 | ||
3631 | /* ARGSUSED */ | |
3632 | static void | |
3633 | dont_repeat_command (ignored, from_tty) | |
3634 | char *ignored; | |
3635 | int from_tty; | |
3636 | { | |
c5aa993b JM |
3637 | *line = 0; /* Can't call dont_repeat here because we're not |
3638 | necessarily reading from stdin. */ | |
9e0b60a8 JM |
3639 | } |
3640 | \f | |
3641 | /* Functions to manipulate command line editing control variables. */ | |
3642 | ||
3643 | /* Number of commands to print in each call to show_commands. */ | |
3644 | #define Hist_print 10 | |
3645 | static void | |
3646 | show_commands (args, from_tty) | |
3647 | char *args; | |
3648 | int from_tty; | |
3649 | { | |
3650 | /* Index for history commands. Relative to history_base. */ | |
3651 | int offset; | |
3652 | ||
3653 | /* Number of the history entry which we are planning to display next. | |
3654 | Relative to history_base. */ | |
3655 | static int num = 0; | |
3656 | ||
3657 | /* The first command in the history which doesn't exist (i.e. one more | |
3658 | than the number of the last command). Relative to history_base. */ | |
3659 | int hist_len; | |
3660 | ||
3661 | extern HIST_ENTRY *history_get PARAMS ((int)); | |
3662 | ||
3663 | /* Print out some of the commands from the command history. */ | |
3664 | /* First determine the length of the history list. */ | |
3665 | hist_len = history_size; | |
3666 | for (offset = 0; offset < history_size; offset++) | |
3667 | { | |
3668 | if (!history_get (history_base + offset)) | |
3669 | { | |
3670 | hist_len = offset; | |
3671 | break; | |
3672 | } | |
3673 | } | |
3674 | ||
3675 | if (args) | |
3676 | { | |
3677 | if (args[0] == '+' && args[1] == '\0') | |
3678 | /* "info editing +" should print from the stored position. */ | |
3679 | ; | |
3680 | else | |
3681 | /* "info editing <exp>" should print around command number <exp>. */ | |
3682 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
3683 | } | |
3684 | /* "show commands" means print the last Hist_print commands. */ | |
3685 | else | |
3686 | { | |
3687 | num = hist_len - Hist_print; | |
3688 | } | |
3689 | ||
3690 | if (num < 0) | |
3691 | num = 0; | |
3692 | ||
3693 | /* If there are at least Hist_print commands, we want to display the last | |
3694 | Hist_print rather than, say, the last 6. */ | |
3695 | if (hist_len - num < Hist_print) | |
3696 | { | |
3697 | num = hist_len - Hist_print; | |
3698 | if (num < 0) | |
3699 | num = 0; | |
3700 | } | |
3701 | ||
3702 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
3703 | { | |
3704 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 3705 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
3706 | } |
3707 | ||
3708 | /* The next command we want to display is the next one that we haven't | |
3709 | displayed yet. */ | |
3710 | num += Hist_print; | |
3711 | ||
3712 | /* If the user repeats this command with return, it should do what | |
3713 | "show commands +" does. This is unnecessary if arg is null, | |
3714 | because "show commands +" is not useful after "show commands". */ | |
3715 | if (from_tty && args) | |
3716 | { | |
3717 | args[0] = '+'; | |
3718 | args[1] = '\0'; | |
3719 | } | |
3720 | } | |
3721 | ||
3722 | /* Called by do_setshow_command. */ | |
3723 | /* ARGSUSED */ | |
3724 | static void | |
3725 | set_history_size_command (args, from_tty, c) | |
3726 | char *args; | |
3727 | int from_tty; | |
3728 | struct cmd_list_element *c; | |
3729 | { | |
3730 | if (history_size == INT_MAX) | |
3731 | unstifle_history (); | |
3732 | else if (history_size >= 0) | |
3733 | stifle_history (history_size); | |
3734 | else | |
3735 | { | |
3736 | history_size = INT_MAX; | |
3737 | error ("History size must be non-negative"); | |
3738 | } | |
3739 | } | |
3740 | ||
3741 | /* ARGSUSED */ | |
3742 | static void | |
3743 | set_history (args, from_tty) | |
3744 | char *args; | |
3745 | int from_tty; | |
3746 | { | |
3747 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
3748 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
3749 | } | |
3750 | ||
3751 | /* ARGSUSED */ | |
3752 | static void | |
3753 | show_history (args, from_tty) | |
3754 | char *args; | |
3755 | int from_tty; | |
3756 | { | |
3757 | cmd_show_list (showhistlist, from_tty, ""); | |
3758 | } | |
3759 | ||
3760 | int info_verbose = 0; /* Default verbose msgs off */ | |
3761 | ||
3762 | /* Called by do_setshow_command. An elaborate joke. */ | |
3763 | /* ARGSUSED */ | |
3764 | static void | |
3765 | set_verbose (args, from_tty, c) | |
3766 | char *args; | |
3767 | int from_tty; | |
3768 | struct cmd_list_element *c; | |
3769 | { | |
3770 | char *cmdname = "verbose"; | |
3771 | struct cmd_list_element *showcmd; | |
3772 | ||
3773 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
3774 | ||
3775 | if (info_verbose) | |
3776 | { | |
3777 | c->doc = "Set verbose printing of informational messages."; | |
3778 | showcmd->doc = "Show verbose printing of informational messages."; | |
3779 | } | |
3780 | else | |
3781 | { | |
3782 | c->doc = "Set verbosity."; | |
3783 | showcmd->doc = "Show verbosity."; | |
3784 | } | |
3785 | } | |
3786 | ||
3787 | static void | |
3788 | float_handler (signo) | |
c5aa993b | 3789 | int signo; |
9e0b60a8 JM |
3790 | { |
3791 | /* This message is based on ANSI C, section 4.7. Note that integer | |
3792 | divide by zero causes this, so "float" is a misnomer. */ | |
3793 | signal (SIGFPE, float_handler); | |
3794 | error ("Erroneous arithmetic operation."); | |
3795 | } | |
9e0b60a8 | 3796 | \f |
c5aa993b | 3797 | |
9e0b60a8 JM |
3798 | static void |
3799 | init_cmd_lists () | |
3800 | { | |
3801 | cmdlist = NULL; | |
3802 | infolist = NULL; | |
3803 | enablelist = NULL; | |
3804 | disablelist = NULL; | |
3805 | togglelist = NULL; | |
3806 | stoplist = NULL; | |
3807 | deletelist = NULL; | |
3808 | enablebreaklist = NULL; | |
3809 | setlist = NULL; | |
3810 | unsetlist = NULL; | |
3811 | showlist = NULL; | |
3812 | sethistlist = NULL; | |
3813 | showhistlist = NULL; | |
3814 | unsethistlist = NULL; | |
3815 | maintenancelist = NULL; | |
3816 | maintenanceinfolist = NULL; | |
3817 | maintenanceprintlist = NULL; | |
3818 | setprintlist = NULL; | |
3819 | showprintlist = NULL; | |
3820 | setchecklist = NULL; | |
3821 | showchecklist = NULL; | |
3822 | } | |
3823 | ||
3824 | /* Init the history buffer. Note that we are called after the init file(s) | |
3825 | * have been read so that the user can change the history file via his | |
3826 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
3827 | * overrides all of this. | |
3828 | */ | |
3829 | ||
3830 | void | |
c5aa993b | 3831 | init_history () |
9e0b60a8 JM |
3832 | { |
3833 | char *tmpenv; | |
3834 | ||
3835 | tmpenv = getenv ("HISTSIZE"); | |
3836 | if (tmpenv) | |
3837 | history_size = atoi (tmpenv); | |
3838 | else if (!history_size) | |
3839 | history_size = 256; | |
3840 | ||
3841 | stifle_history (history_size); | |
3842 | ||
3843 | tmpenv = getenv ("GDBHISTFILE"); | |
3844 | if (tmpenv) | |
c5aa993b JM |
3845 | history_filename = savestring (tmpenv, strlen (tmpenv)); |
3846 | else if (!history_filename) | |
3847 | { | |
3848 | /* We include the current directory so that if the user changes | |
3849 | directories the file written will be the same as the one | |
3850 | that was read. */ | |
a0b3c4fd JM |
3851 | #ifdef __MSDOS__ |
3852 | /* No leading dots in file names are allowed on MSDOS. */ | |
3853 | history_filename = concat (current_directory, "/_gdb_history", NULL); | |
3854 | #else | |
c5aa993b | 3855 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
a0b3c4fd | 3856 | #endif |
c5aa993b | 3857 | } |
9e0b60a8 JM |
3858 | read_history (history_filename); |
3859 | } | |
3860 | ||
3861 | static void | |
3862 | init_main () | |
3863 | { | |
3864 | struct cmd_list_element *c; | |
3865 | ||
3866 | /* If we are running the asynchronous version, | |
3867 | we initialize the prompts differently. */ | |
6426a772 | 3868 | if (!event_loop_p) |
9e0b60a8 | 3869 | { |
c5aa993b | 3870 | gdb_prompt_string = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
9e0b60a8 JM |
3871 | } |
3872 | else | |
3873 | { | |
3874 | /* initialize the prompt stack to a simple "(gdb) " prompt or to | |
96baa820 | 3875 | whatever the DEFAULT_PROMPT is. */ |
9e0b60a8 | 3876 | the_prompts.top = 0; |
c5aa993b | 3877 | PREFIX (0) = ""; |
c5aa993b | 3878 | PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
c5aa993b | 3879 | SUFFIX (0) = ""; |
9e0b60a8 | 3880 | /* Set things up for annotation_level > 1, if the user ever decides |
c5aa993b | 3881 | to use it. */ |
9e0b60a8 JM |
3882 | async_annotation_suffix = "prompt"; |
3883 | /* Set the variable associated with the setshow prompt command. */ | |
3884 | new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0))); | |
3885 | } | |
3886 | gdb_prompt_escape = 0; /* default to none. */ | |
3887 | ||
3888 | /* Set the important stuff up for command editing. */ | |
3889 | command_editing_p = 1; | |
9e0b60a8 JM |
3890 | history_expansion_p = 0; |
3891 | write_history_p = 0; | |
3892 | ||
3893 | /* Setup important stuff for command line editing. */ | |
3894 | rl_completion_entry_function = (int (*)()) readline_line_completion_function; | |
3895 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
3896 | rl_completer_quote_characters = gdb_completer_quote_characters; | |
3897 | rl_readline_name = "gdb"; | |
3898 | ||
3899 | /* Define the classes of commands. | |
3900 | They will appear in the help list in the reverse of this order. */ | |
3901 | ||
3902 | add_cmd ("internals", class_maintenance, NO_FUNCTION, | |
3903 | "Maintenance commands.\n\ | |
3904 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
3905 | These commands are subject to frequent change, and may not be as\n\ | |
3906 | well documented as user commands.", | |
3907 | &cmdlist); | |
3908 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); | |
3909 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
3910 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
3911 | The commands in this class are those defined by the user.\n\ | |
3912 | Use the \"define\" command to define a command.", &cmdlist); | |
3913 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
3914 | if (!dbx_commands) | |
3915 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
3916 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
3917 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
3918 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
3919 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
3920 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
3921 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
3922 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
3923 | Variable lookups are done with respect to the selected frame.\n\ | |
3924 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
3925 | The commands below can be used to select other frames by number or address.", | |
3926 | &cmdlist); | |
3927 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
3928 | ||
3929 | add_com ("pwd", class_files, pwd_command, | |
c5aa993b | 3930 | "Print working directory. This is used for your program as well."); |
9e0b60a8 | 3931 | c = add_cmd ("cd", class_files, cd_command, |
c5aa993b | 3932 | "Set working directory to DIR for debugger and program being debugged.\n\ |
9e0b60a8 JM |
3933 | The change does not take effect for the program being debugged\n\ |
3934 | until the next time it is started.", &cmdlist); | |
3935 | c->completer = filename_completer; | |
3936 | ||
3937 | /* The set prompt command is different depending whether or not the | |
3938 | async version is run. NOTE: this difference is going to | |
3939 | disappear as we make the event loop be the default engine of | |
3940 | gdb. */ | |
6426a772 | 3941 | if (!event_loop_p) |
9e0b60a8 JM |
3942 | { |
3943 | add_show_from_set | |
c5aa993b | 3944 | (add_set_cmd ("prompt", class_support, var_string, |
9e0b60a8 JM |
3945 | (char *) &gdb_prompt_string, "Set gdb's prompt", |
3946 | &setlist), | |
3947 | &showlist); | |
3948 | } | |
3949 | else | |
3950 | { | |
c5aa993b JM |
3951 | c = add_set_cmd ("prompt", class_support, var_string, |
3952 | (char *) &new_async_prompt, "Set gdb's prompt", | |
9e0b60a8 JM |
3953 | &setlist); |
3954 | add_show_from_set (c, &showlist); | |
3955 | c->function.sfunc = set_async_prompt; | |
3956 | } | |
3957 | ||
3958 | add_show_from_set | |
c5aa993b | 3959 | (add_set_cmd ("prompt-escape-char", class_support, var_zinteger, |
9e0b60a8 JM |
3960 | (char *) &gdb_prompt_escape, |
3961 | "Set escape character for formatting of gdb's prompt", | |
3962 | &setlist), | |
3963 | &showlist); | |
3964 | ||
3965 | add_com ("echo", class_support, echo_command, | |
3966 | "Print a constant string. Give string as argument.\n\ | |
3967 | C escape sequences may be used in the argument.\n\ | |
3968 | No newline is added at the end of the argument;\n\ | |
3969 | use \"\\n\" if you want a newline to be printed.\n\ | |
3970 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
3971 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
3972 | to be printed or after trailing whitespace."); | |
3973 | add_com ("document", class_support, document_command, | |
3974 | "Document a user-defined command.\n\ | |
3975 | Give command name as argument. Give documentation on following lines.\n\ | |
3976 | End with a line of just \"end\"."); | |
3977 | add_com ("define", class_support, define_command, | |
3978 | "Define a new command name. Command name is argument.\n\ | |
3979 | Definition appears on following lines, one command per line.\n\ | |
3980 | End with a line of just \"end\".\n\ | |
3981 | Use the \"document\" command to give documentation for the new command.\n\ | |
3982 | Commands defined in this way may have up to ten arguments."); | |
3983 | ||
3984 | #ifdef __STDC__ | |
3985 | c = add_cmd ("source", class_support, source_command, | |
c5aa993b | 3986 | "Read commands from a file named FILE.\n\ |
9e0b60a8 JM |
3987 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ |
3988 | when gdb is started.", &cmdlist); | |
3989 | #else | |
3990 | /* Punt file name, we can't help it easily. */ | |
3991 | c = add_cmd ("source", class_support, source_command, | |
c5aa993b | 3992 | "Read commands from a file named FILE.\n\ |
9e0b60a8 JM |
3993 | Note that the file \".gdbinit\" is read automatically in this way\n\ |
3994 | when gdb is started.", &cmdlist); | |
3995 | #endif | |
3996 | c->completer = filename_completer; | |
3997 | ||
3998 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
3999 | add_com ("help", class_support, help_command, "Print list of commands."); | |
4000 | add_com_alias ("q", "quit", class_support, 1); | |
4001 | add_com_alias ("h", "help", class_support, 1); | |
4002 | ||
4003 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ | |
4004 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
4005 | hitting return."); | |
4006 | ||
c5aa993b | 4007 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *) &info_verbose, |
9e0b60a8 JM |
4008 | "Set ", |
4009 | &setlist), | |
c5aa993b | 4010 | add_show_from_set (c, &showlist); |
9e0b60a8 JM |
4011 | c->function.sfunc = set_verbose; |
4012 | set_verbose (NULL, 0, c); | |
4013 | ||
4014 | /* The set editing command is different depending whether or not the | |
4015 | async version is run. NOTE: this difference is going to disappear | |
4016 | as we make the event loop be the default engine of gdb. */ | |
6426a772 | 4017 | if (!event_loop_p) |
9e0b60a8 JM |
4018 | { |
4019 | add_show_from_set | |
c5aa993b | 4020 | (add_set_cmd ("editing", class_support, var_boolean, (char *) &command_editing_p, |
9e0b60a8 JM |
4021 | "Set editing of command lines as they are typed.\n\ |
4022 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
4023 | Without an argument, command line editing is enabled. To edit, use\n\ | |
4024 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
4025 | &showlist); | |
4026 | } | |
4027 | else | |
4028 | { | |
c5aa993b | 4029 | c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p, |
9e0b60a8 JM |
4030 | "Set editing of command lines as they are typed.\n\ |
4031 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
4032 | Without an argument, command line editing is enabled. To edit, use\n\ | |
4033 | EMACS-like or VI-like commands like control-P or ESC.", &setlist); | |
4034 | ||
4035 | add_show_from_set (c, &showlist); | |
4036 | c->function.sfunc = set_async_editing_command; | |
4037 | } | |
4038 | ||
4039 | add_prefix_cmd ("history", class_support, set_history, | |
4040 | "Generic command for setting command history parameters.", | |
4041 | &sethistlist, "set history ", 0, &setlist); | |
4042 | add_prefix_cmd ("history", class_support, show_history, | |
4043 | "Generic command for showing command history parameters.", | |
4044 | &showhistlist, "show history ", 0, &showlist); | |
4045 | ||
4046 | add_show_from_set | |
c5aa993b JM |
4047 | (add_set_cmd ("expansion", no_class, var_boolean, (char *) &history_expansion_p, |
4048 | "Set history expansion on command input.\n\ | |
9e0b60a8 JM |
4049 | Without an argument, history expansion is enabled.", &sethistlist), |
4050 | &showhistlist); | |
4051 | ||
4052 | add_show_from_set | |
c5aa993b JM |
4053 | (add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p, |
4054 | "Set saving of the history record on exit.\n\ | |
9e0b60a8 JM |
4055 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
4056 | Without an argument, saving is enabled.", &sethistlist), | |
4057 | &showhistlist); | |
4058 | ||
c5aa993b | 4059 | c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size, |
9e0b60a8 JM |
4060 | "Set the size of the command history, \n\ |
4061 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
4062 | add_show_from_set (c, &showhistlist); | |
4063 | c->function.sfunc = set_history_size_command; | |
4064 | ||
4065 | add_show_from_set | |
c5aa993b JM |
4066 | (add_set_cmd ("filename", no_class, var_filename, (char *) &history_filename, |
4067 | "Set the filename in which to record the command history\n\ | |
9e0b60a8 JM |
4068 | (the list of previous commands of which a record is kept).", &sethistlist), |
4069 | &showhistlist); | |
4070 | ||
4071 | add_show_from_set | |
4072 | (add_set_cmd ("confirm", class_support, var_boolean, | |
c5aa993b | 4073 | (char *) &caution, |
9e0b60a8 JM |
4074 | "Set whether to confirm potentially dangerous operations.", |
4075 | &setlist), | |
4076 | &showlist); | |
4077 | ||
4078 | add_prefix_cmd ("info", class_info, info_command, | |
c5aa993b | 4079 | "Generic command for showing things about the program being debugged.", |
9e0b60a8 JM |
4080 | &infolist, "info ", 0, &cmdlist); |
4081 | add_com_alias ("i", "info", class_info, 1); | |
4082 | ||
4083 | add_com ("complete", class_obscure, complete_command, | |
4084 | "List the completions for the rest of the line as a command."); | |
4085 | ||
4086 | add_prefix_cmd ("show", class_info, show_command, | |
4087 | "Generic command for showing things about the debugger.", | |
4088 | &showlist, "show ", 0, &cmdlist); | |
4089 | /* Another way to get at the same thing. */ | |
4090 | add_info ("set", show_command, "Show all GDB settings."); | |
4091 | ||
4092 | add_cmd ("commands", no_class, show_commands, | |
4093 | "Show the history of commands you typed.\n\ | |
4094 | You can supply a command number to start with, or a `+' to start after\n\ | |
4095 | the previous command number shown.", | |
4096 | &showlist); | |
4097 | ||
4098 | add_cmd ("version", no_class, show_version, | |
4099 | "Show what version of GDB this is.", &showlist); | |
4100 | ||
4101 | add_com ("while", class_support, while_command, | |
c5aa993b | 4102 | "Execute nested commands WHILE the conditional expression is non zero.\n\ |
9e0b60a8 JM |
4103 | The conditional expression must follow the word `while' and must in turn be\n\ |
4104 | followed by a new line. The nested commands must be entered one per line,\n\ | |
4105 | and should be terminated by the word `end'."); | |
4106 | ||
4107 | add_com ("if", class_support, if_command, | |
c5aa993b | 4108 | "Execute nested commands once IF the conditional expression is non zero.\n\ |
9e0b60a8 JM |
4109 | The conditional expression must follow the word `if' and must in turn be\n\ |
4110 | followed by a new line. The nested commands must be entered one per line,\n\ | |
4111 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
4112 | is used, the same rules apply to its nested commands as to the first ones."); | |
4113 | ||
4114 | /* If target is open when baud changes, it doesn't take effect until the | |
4115 | next open (I think, not sure). */ | |
4116 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
c5aa993b | 4117 | var_zinteger, (char *) &baud_rate, |
9e0b60a8 JM |
4118 | "Set baud rate for remote serial I/O.\n\ |
4119 | This value is used to set the speed of the serial port when debugging\n\ | |
4120 | using remote targets.", &setlist), | |
4121 | &showlist); | |
4122 | ||
4123 | add_show_from_set ( | |
c5aa993b JM |
4124 | add_set_cmd ("remotedebug", no_class, var_zinteger, (char *) &remote_debug, |
4125 | "Set debugging of remote protocol.\n\ | |
9e0b60a8 JM |
4126 | When enabled, each packet sent or received with the remote target\n\ |
4127 | is displayed.", &setlist), | |
c5aa993b | 4128 | &showlist); |
9e0b60a8 JM |
4129 | |
4130 | add_show_from_set ( | |
c5aa993b JM |
4131 | add_set_cmd ("remotetimeout", no_class, var_integer, (char *) &remote_timeout, |
4132 | "Set timeout limit to wait for target to respond.\n\ | |
9e0b60a8 JM |
4133 | This value is used to set the time limit for gdb to wait for a response\n\ |
4134 | from the target.", &setlist), | |
c5aa993b | 4135 | &showlist); |
9e0b60a8 JM |
4136 | |
4137 | /* The set annotate command is different depending whether or not | |
4138 | the async version is run. NOTE: this difference is going to | |
4139 | disappear as we make the event loop be the default engine of | |
4140 | gdb. */ | |
6426a772 | 4141 | if (!event_loop_p) |
9e0b60a8 | 4142 | { |
c5aa993b JM |
4143 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
4144 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
4145 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
4146 | 2 == output annotated suitably for use by programs that control GDB.", | |
4147 | &setlist); | |
4148 | c = add_show_from_set (c, &showlist); | |
4149 | } | |
4150 | else | |
4151 | { | |
c5aa993b JM |
4152 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
4153 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
4154 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
4155 | 2 == output annotated suitably for use by programs that control GDB.", | |
c5aa993b | 4156 | &setlist); |
9e0b60a8 JM |
4157 | add_show_from_set (c, &showlist); |
4158 | c->function.sfunc = set_async_annotation_level; | |
4159 | } | |
6426a772 | 4160 | if (event_loop_p) |
104c1213 JM |
4161 | { |
4162 | add_show_from_set | |
4163 | (add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p, | |
4164 | "Set notification of completion for asynchronous execution commands.\n\ | |
4165 | Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist), | |
4166 | &showlist); | |
4167 | } | |
9e0b60a8 | 4168 | } |