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