Commit | Line | Data |
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172559ec | 1 | /* Top level stuff for GDB, the GNU debugger. |
bf9084c0 | 2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998 |
172559ec JK |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
6c9638b4 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
172559ec JK |
20 | |
21 | #include "defs.h" | |
22 | #include "gdbcmd.h" | |
23 | #include "call-cmds.h" | |
24 | #include "symtab.h" | |
25 | #include "inferior.h" | |
26 | #include "signals.h" | |
27 | #include "target.h" | |
28 | #include "breakpoint.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
e52bfe0c | 31 | #include "value.h" |
172559ec JK |
32 | #include "language.h" |
33 | #include "terminal.h" /* For job_control. */ | |
34 | #include "annotate.h" | |
35 | #include <setjmp.h> | |
36 | #include "top.h" | |
37 | ||
38 | /* readline include files */ | |
39 | #include "readline.h" | |
40 | #include "history.h" | |
41 | ||
42 | /* readline defines this. */ | |
43 | #undef savestring | |
44 | ||
45 | #include <sys/types.h> | |
1a494973 | 46 | #ifdef HAVE_UNISTD_H |
172559ec JK |
47 | #include <unistd.h> |
48 | #endif | |
49 | ||
2b576293 | 50 | #include "gdb_string.h" |
2b576293 | 51 | #include "gdb_stat.h" |
172559ec JK |
52 | #include <ctype.h> |
53 | ||
e3be225e SS |
54 | extern void initialize_utils PARAMS ((void)); |
55 | ||
172559ec JK |
56 | /* Prototypes for local functions */ |
57 | ||
b607efe7 FF |
58 | static void dont_repeat_command PARAMS ((char *, int)); |
59 | ||
60 | static void source_cleanup_lines PARAMS ((PTR)); | |
61 | ||
62 | static void user_defined_command PARAMS ((char *, int)); | |
63 | ||
64 | static void init_signals PARAMS ((void)); | |
65 | ||
66 | #ifdef STOP_SIGNAL | |
67 | static void stop_sig PARAMS ((int)); | |
68 | #endif | |
69 | ||
9ed8604f PS |
70 | static char * line_completion_function PARAMS ((char *, int, char *, int)); |
71 | ||
72 | static char * readline_line_completion_function PARAMS ((char *, int)); | |
172559ec | 73 | |
e52bfe0c | 74 | static void command_loop_marker PARAMS ((int)); |
172559ec | 75 | |
e52bfe0c | 76 | static void while_command PARAMS ((char *, int)); |
172559ec | 77 | |
e52bfe0c | 78 | static void if_command PARAMS ((char *, int)); |
172559ec | 79 | |
e52bfe0c JL |
80 | static struct command_line * |
81 | build_command_line PARAMS ((enum command_control_type, char *)); | |
172559ec | 82 | |
e52bfe0c JL |
83 | static struct command_line * |
84 | get_command_line PARAMS ((enum command_control_type, char *)); | |
172559ec | 85 | |
e52bfe0c | 86 | static void realloc_body_list PARAMS ((struct command_line *, int)); |
172559ec | 87 | |
e52bfe0c | 88 | static enum misc_command_type read_next_line PARAMS ((struct command_line **)); |
172559ec | 89 | |
e52bfe0c JL |
90 | static enum command_control_type |
91 | recurse_read_control_structure PARAMS ((struct command_line *)); | |
172559ec | 92 | |
0f8cdd9b JL |
93 | static struct cleanup * setup_user_args PARAMS ((char *)); |
94 | ||
95 | static char * locate_arg PARAMS ((char *)); | |
96 | ||
97 | static char * insert_args PARAMS ((char *)); | |
98 | ||
99 | static void arg_cleanup PARAMS ((void)); | |
100 | ||
e52bfe0c | 101 | static void init_main PARAMS ((void)); |
172559ec | 102 | |
e52bfe0c | 103 | static void init_cmd_lists PARAMS ((void)); |
172559ec | 104 | |
e52bfe0c | 105 | static void float_handler PARAMS ((int)); |
172559ec | 106 | |
e52bfe0c | 107 | static void init_signals PARAMS ((void)); |
172559ec | 108 | |
e52bfe0c | 109 | static void set_verbose PARAMS ((char *, int, struct cmd_list_element *)); |
172559ec | 110 | |
b8176214 ILT |
111 | static void set_endian PARAMS ((char *, int)); |
112 | ||
113 | static void set_endian_big PARAMS ((char *, int)); | |
114 | ||
115 | static void set_endian_little PARAMS ((char *, int)); | |
116 | ||
b83ed019 ILT |
117 | static void set_endian_auto PARAMS ((char *, int)); |
118 | ||
b8176214 ILT |
119 | static void show_endian PARAMS ((char *, int)); |
120 | ||
ee36741e | 121 | static void set_architecture PARAMS ((char *, int)); |
d0aba53f AC |
122 | |
123 | static void show_architecture PARAMS ((char *, int)); | |
124 | ||
125 | static void info_architecture PARAMS ((char *, int)); | |
126 | ||
e52bfe0c | 127 | static void show_history PARAMS ((char *, int)); |
172559ec | 128 | |
e52bfe0c | 129 | static void set_history PARAMS ((char *, int)); |
172559ec | 130 | |
e52bfe0c JL |
131 | static void set_history_size_command PARAMS ((char *, int, |
132 | struct cmd_list_element *)); | |
172559ec | 133 | |
e52bfe0c | 134 | static void show_commands PARAMS ((char *, int)); |
172559ec | 135 | |
e52bfe0c | 136 | static void echo_command PARAMS ((char *, int)); |
172559ec | 137 | |
e52bfe0c | 138 | static void pwd_command PARAMS ((char *, int)); |
172559ec | 139 | |
e52bfe0c | 140 | static void show_version PARAMS ((char *, int)); |
172559ec | 141 | |
e52bfe0c | 142 | static void document_command PARAMS ((char *, int)); |
172559ec | 143 | |
e52bfe0c | 144 | static void define_command PARAMS ((char *, int)); |
172559ec | 145 | |
e52bfe0c JL |
146 | static void validate_comname PARAMS ((char *)); |
147 | ||
148 | static void help_command PARAMS ((char *, int)); | |
149 | ||
150 | static void show_command PARAMS ((char *, int)); | |
151 | ||
152 | static void info_command PARAMS ((char *, int)); | |
153 | ||
154 | static void complete_command PARAMS ((char *, int)); | |
155 | ||
156 | static void do_nothing PARAMS ((int)); | |
157 | ||
4ce7ba51 | 158 | #ifdef SIGHUP |
e52bfe0c JL |
159 | static int quit_cover PARAMS ((char *)); |
160 | ||
161 | static void disconnect PARAMS ((int)); | |
4ce7ba51 | 162 | #endif |
e52bfe0c JL |
163 | |
164 | static void source_cleanup PARAMS ((FILE *)); | |
172559ec JK |
165 | |
166 | /* If this definition isn't overridden by the header files, assume | |
167 | that isatty and fileno exist on this system. */ | |
168 | #ifndef ISATTY | |
169 | #define ISATTY(FP) (isatty (fileno (FP))) | |
170 | #endif | |
171 | ||
172 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
173 | ||
174 | #ifndef GDBINIT_FILENAME | |
175 | #define GDBINIT_FILENAME ".gdbinit" | |
176 | #endif | |
177 | char gdbinit[] = GDBINIT_FILENAME; | |
f22661ee | 178 | |
172559ec JK |
179 | int inhibit_gdbinit = 0; |
180 | ||
f22661ee SS |
181 | /* If nonzero, and GDB has been configured to be able to use windows, |
182 | attempt to open them upon startup. */ | |
754e5da2 | 183 | |
f22661ee | 184 | int use_windows = 1; |
754e5da2 | 185 | |
172559ec JK |
186 | /* Version number of GDB, as a string. */ |
187 | ||
188 | extern char *version; | |
189 | ||
190 | /* Canonical host name as a string. */ | |
191 | ||
192 | extern char *host_name; | |
193 | ||
194 | /* Canonical target name as a string. */ | |
195 | ||
196 | extern char *target_name; | |
197 | ||
198 | extern char lang_frame_mismatch_warn[]; /* language.c */ | |
199 | ||
200 | /* Flag for whether we want all the "from_tty" gubbish printed. */ | |
201 | ||
202 | int caution = 1; /* Default is yes, sigh. */ | |
203 | ||
f22661ee | 204 | /* Define all cmd_list_elements. */ |
172559ec JK |
205 | |
206 | /* Chain containing all defined commands. */ | |
207 | ||
208 | struct cmd_list_element *cmdlist; | |
209 | ||
210 | /* Chain containing all defined info subcommands. */ | |
211 | ||
212 | struct cmd_list_element *infolist; | |
213 | ||
214 | /* Chain containing all defined enable subcommands. */ | |
215 | ||
216 | struct cmd_list_element *enablelist; | |
217 | ||
218 | /* Chain containing all defined disable subcommands. */ | |
219 | ||
220 | struct cmd_list_element *disablelist; | |
221 | ||
222 | /* Chain containing all defined delete subcommands. */ | |
223 | ||
224 | struct cmd_list_element *deletelist; | |
225 | ||
226 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
227 | ||
228 | struct cmd_list_element *enablebreaklist; | |
229 | ||
230 | /* Chain containing all defined set subcommands */ | |
231 | ||
232 | struct cmd_list_element *setlist; | |
233 | ||
234 | /* Chain containing all defined unset subcommands */ | |
235 | ||
236 | struct cmd_list_element *unsetlist; | |
237 | ||
238 | /* Chain containing all defined show subcommands. */ | |
239 | ||
240 | struct cmd_list_element *showlist; | |
241 | ||
b8176214 ILT |
242 | /* Chain containing the \"set endian\" commands. */ |
243 | ||
244 | struct cmd_list_element *endianlist; | |
b8176214 | 245 | |
172559ec JK |
246 | /* Chain containing all defined \"set history\". */ |
247 | ||
248 | struct cmd_list_element *sethistlist; | |
249 | ||
250 | /* Chain containing all defined \"show history\". */ | |
251 | ||
252 | struct cmd_list_element *showhistlist; | |
253 | ||
254 | /* Chain containing all defined \"unset history\". */ | |
255 | ||
256 | struct cmd_list_element *unsethistlist; | |
257 | ||
258 | /* Chain containing all defined maintenance subcommands. */ | |
259 | ||
260 | #if MAINTENANCE_CMDS | |
261 | struct cmd_list_element *maintenancelist; | |
262 | #endif | |
263 | ||
264 | /* Chain containing all defined "maintenance info" subcommands. */ | |
265 | ||
266 | #if MAINTENANCE_CMDS | |
267 | struct cmd_list_element *maintenanceinfolist; | |
268 | #endif | |
269 | ||
270 | /* Chain containing all defined "maintenance print" subcommands. */ | |
271 | ||
272 | #if MAINTENANCE_CMDS | |
273 | struct cmd_list_element *maintenanceprintlist; | |
274 | #endif | |
275 | ||
276 | struct cmd_list_element *setprintlist; | |
277 | ||
278 | struct cmd_list_element *showprintlist; | |
279 | ||
280 | struct cmd_list_element *setchecklist; | |
281 | ||
282 | struct cmd_list_element *showchecklist; | |
283 | ||
284 | /* stdio stream that command input is being read from. Set to stdin normally. | |
285 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
41756e56 | 286 | executing a user-defined command or interacting via a GUI. */ |
172559ec JK |
287 | |
288 | FILE *instream; | |
289 | ||
290 | /* Current working directory. */ | |
291 | ||
292 | char *current_directory; | |
293 | ||
294 | /* The directory name is actually stored here (usually). */ | |
b7ec5b8d | 295 | char gdb_dirbuf[1024]; |
172559ec JK |
296 | |
297 | /* Function to call before reading a command, if nonzero. | |
298 | The function receives two args: an input stream, | |
299 | and a prompt string. */ | |
300 | ||
301 | void (*window_hook) PARAMS ((FILE *, char *)); | |
302 | ||
303 | int epoch_interface; | |
304 | int xgdb_verbose; | |
305 | ||
306 | /* gdb prints this when reading a command interactively */ | |
307 | static char *prompt; | |
308 | ||
309 | /* Buffer used for reading command lines, and the size | |
310 | allocated for it so far. */ | |
311 | ||
312 | char *line; | |
313 | int linesize = 100; | |
314 | ||
315 | /* Nonzero if the current command is modified by "server ". This | |
316 | affects things like recording into the command history, comamnds | |
317 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, | |
318 | whatever) can issue its own commands and also send along commands | |
319 | from the user, and have the user not notice that the user interface | |
320 | is issuing commands too. */ | |
321 | int server_command; | |
322 | ||
323 | /* Baud rate specified for talking to serial target systems. Default | |
324 | is left as -1, so targets can choose their own defaults. */ | |
325 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 | |
326 | or (unsigned int)-1. This is a Bad User Interface. */ | |
327 | ||
328 | int baud_rate = -1; | |
329 | ||
cb1709ae DP |
330 | /* Timeout limit for response from target. */ |
331 | ||
332 | int remote_timeout = 20; /* Set default to 20 */ | |
333 | ||
172559ec JK |
334 | /* Non-zero tells remote* modules to output debugging info. */ |
335 | ||
336 | int remote_debug = 0; | |
337 | ||
e52bfe0c JL |
338 | /* Level of control structure. */ |
339 | static int control_level; | |
340 | ||
0f8cdd9b JL |
341 | /* Structure for arguments to user defined functions. */ |
342 | #define MAXUSERARGS 10 | |
343 | struct user_args | |
344 | { | |
345 | struct user_args *next; | |
346 | struct | |
347 | { | |
348 | char *arg; | |
349 | int len; | |
350 | } a[MAXUSERARGS]; | |
351 | int count; | |
352 | } *user_args; | |
353 | ||
172559ec JK |
354 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ |
355 | ||
356 | #ifndef STOP_SIGNAL | |
357 | #ifdef SIGTSTP | |
358 | #define STOP_SIGNAL SIGTSTP | |
359 | static void stop_sig PARAMS ((int)); | |
360 | #endif | |
361 | #endif | |
362 | ||
363 | /* Some System V have job control but not sigsetmask(). */ | |
364 | #if !defined (HAVE_SIGSETMASK) | |
365 | #if !defined (USG) | |
366 | #define HAVE_SIGSETMASK 1 | |
367 | #else | |
368 | #define HAVE_SIGSETMASK 0 | |
369 | #endif | |
370 | #endif | |
371 | ||
372 | #if 0 == (HAVE_SIGSETMASK) | |
373 | #define sigsetmask(n) | |
374 | #endif | |
8164ec2e SG |
375 | |
376 | /* Hooks for alternate command interfaces. */ | |
377 | ||
378 | /* Called after most modules have been initialized, but before taking users | |
379 | command file. */ | |
380 | ||
2476848a | 381 | void (*init_ui_hook) PARAMS ((char *argv0)); |
d836385e | 382 | #ifdef __CYGWIN__ |
21b3bc77 KS |
383 | void (*ui_loop_hook) PARAMS ((int)); |
384 | #endif | |
8164ec2e SG |
385 | |
386 | /* Called instead of command_loop at top level. Can be invoked via | |
387 | return_to_top_level. */ | |
388 | ||
389 | void (*command_loop_hook) PARAMS ((void)); | |
390 | ||
764efb58 | 391 | |
8164ec2e SG |
392 | /* Called instead of fputs for all output. */ |
393 | ||
86db943c | 394 | void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer, FILE *stream)); |
8164ec2e | 395 | |
764efb58 SC |
396 | /* Called when the target says something to the host, which may |
397 | want to appear in a different window. */ | |
398 | ||
327332d8 | 399 | void (*target_output_hook) PARAMS ((char *)); |
764efb58 | 400 | |
8164ec2e SG |
401 | /* Called from print_frame_info to list the line we stopped in. */ |
402 | ||
403 | void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s, int line, | |
404 | int stopline, int noerror)); | |
405 | /* Replaces most of query. */ | |
406 | ||
b607efe7 | 407 | int (*query_hook) PARAMS ((const char *, va_list)); |
8164ec2e | 408 | |
e6e9507d EZ |
409 | /* Replaces most of warning. */ |
410 | ||
411 | void (*warning_hook) PARAMS ((const char *, va_list)); | |
412 | ||
8164ec2e SG |
413 | /* Called from gdb_flush to flush output. */ |
414 | ||
415 | void (*flush_hook) PARAMS ((FILE *stream)); | |
416 | ||
41756e56 FF |
417 | /* These three functions support getting lines of text from the user. They |
418 | are used in sequence. First readline_begin_hook is called with a text | |
419 | string that might be (for example) a message for the user to type in a | |
420 | sequence of commands to be executed at a breakpoint. If this function | |
421 | calls back to a GUI, it might take this opportunity to pop up a text | |
422 | interaction window with this message. Next, readline_hook is called | |
423 | with a prompt that is emitted prior to collecting the user input. | |
424 | It can be called multiple times. Finally, readline_end_hook is called | |
425 | to notify the GUI that we are done with the interaction window and it | |
426 | can close it. */ | |
427 | ||
428 | void (*readline_begin_hook) PARAMS ((char *, ...)); | |
429 | char * (*readline_hook) PARAMS ((char *)); | |
430 | void (*readline_end_hook) PARAMS ((void)); | |
431 | ||
8164ec2e SG |
432 | /* Called as appropriate to notify the interface of the specified breakpoint |
433 | conditions. */ | |
434 | ||
637b1661 | 435 | void (*create_breakpoint_hook) PARAMS ((struct breakpoint *bpt)); |
8164ec2e | 436 | void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt)); |
6131622e | 437 | void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt)); |
637b1661 SG |
438 | |
439 | /* Called during long calculations to allow GUI to repair window damage, and to | |
440 | check for stop buttons, etc... */ | |
441 | ||
442 | void (*interactive_hook) PARAMS ((void)); | |
443 | ||
16041d53 SC |
444 | /* Called when the registers have changed, as a hint to a GUI |
445 | to minimize window update. */ | |
446 | ||
447 | void (*registers_changed_hook) PARAMS ((void)); | |
448 | ||
929db6e5 EZ |
449 | /* tell the GUI someone changed the PC */ |
450 | void (*pc_changed_hook) PARAMS ((void)); | |
451 | ||
479f0f18 SG |
452 | /* Called when going to wait for the target. Usually allows the GUI to run |
453 | while waiting for target events. */ | |
454 | ||
455 | int (*target_wait_hook) PARAMS ((int pid, struct target_waitstatus *status)); | |
456 | ||
457 | /* Used by UI as a wrapper around command execution. May do various things | |
458 | like enabling/disabling buttons, etc... */ | |
459 | ||
460 | void (*call_command_hook) PARAMS ((struct cmd_list_element *c, char *cmd, | |
461 | int from_tty)); | |
45993f61 | 462 | |
d5adad6a TT |
463 | /* Called when the current thread changes. Argument is thread id. */ |
464 | ||
465 | void (*context_hook) PARAMS ((int id)); | |
45993f61 SC |
466 | |
467 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
468 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
469 | ||
b607efe7 | 470 | NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN; |
45993f61 | 471 | |
172559ec JK |
472 | \f |
473 | /* Where to go for return_to_top_level (RETURN_ERROR). */ | |
4b65fd38 | 474 | SIGJMP_BUF error_return; |
172559ec | 475 | /* Where to go for return_to_top_level (RETURN_QUIT). */ |
4b65fd38 | 476 | SIGJMP_BUF quit_return; |
172559ec JK |
477 | |
478 | /* Return for reason REASON. This generally gets back to the command | |
479 | loop, but can be caught via catch_errors. */ | |
480 | ||
481 | NORETURN void | |
482 | return_to_top_level (reason) | |
483 | enum return_reason reason; | |
484 | { | |
485 | quit_flag = 0; | |
486 | immediate_quit = 0; | |
487 | ||
488 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
489 | I can think of a reason why that is vital, though). */ | |
490 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ | |
491 | ||
492 | disable_current_display (); | |
493 | do_cleanups (ALL_CLEANUPS); | |
494 | ||
495 | if (annotation_level > 1) | |
496 | switch (reason) | |
497 | { | |
498 | case RETURN_QUIT: | |
499 | annotate_quit (); | |
500 | break; | |
501 | case RETURN_ERROR: | |
502 | annotate_error (); | |
503 | break; | |
504 | } | |
505 | ||
4b65fd38 | 506 | (NORETURN void) SIGLONGJMP |
172559ec JK |
507 | (reason == RETURN_ERROR ? error_return : quit_return, 1); |
508 | } | |
509 | ||
510 | /* Call FUNC with arg ARGS, catching any errors. If there is no | |
511 | error, return the value returned by FUNC. If there is an error, | |
512 | print ERRSTRING, print the specific error message, then return | |
513 | zero. | |
514 | ||
515 | Must not be called with immediate_quit in effect (bad things might | |
516 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
517 | This is an OK restriction; with very few exceptions immediate_quit can | |
518 | be replaced by judicious use of QUIT. | |
519 | ||
520 | MASK specifies what to catch; it is normally set to | |
521 | RETURN_MASK_ALL, if for no other reason than that the code which | |
522 | calls catch_errors might not be set up to deal with a quit which | |
523 | isn't caught. But if the code can deal with it, it generally | |
524 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
525 | useful to abort only the portion of the operation inside the | |
526 | catch_errors. Note that quit should return to the command line | |
527 | fairly quickly, even if some further processing is being done. */ | |
528 | ||
529 | int | |
530 | catch_errors (func, args, errstring, mask) | |
531 | int (*func) PARAMS ((char *)); | |
532 | PTR args; | |
533 | char *errstring; | |
534 | return_mask mask; | |
535 | { | |
4b65fd38 DT |
536 | SIGJMP_BUF saved_error; |
537 | SIGJMP_BUF saved_quit; | |
538 | SIGJMP_BUF tmp_jmp; | |
172559ec JK |
539 | int val; |
540 | struct cleanup *saved_cleanup_chain; | |
541 | char *saved_error_pre_print; | |
dee80384 | 542 | char *saved_quit_pre_print; |
172559ec JK |
543 | |
544 | saved_cleanup_chain = save_cleanups (); | |
545 | saved_error_pre_print = error_pre_print; | |
dee80384 | 546 | saved_quit_pre_print = quit_pre_print; |
172559ec JK |
547 | |
548 | if (mask & RETURN_MASK_ERROR) | |
dee80384 | 549 | { |
4b65fd38 | 550 | memcpy ((char *)saved_error, (char *)error_return, sizeof (SIGJMP_BUF)); |
dee80384 JK |
551 | error_pre_print = errstring; |
552 | } | |
172559ec | 553 | if (mask & RETURN_MASK_QUIT) |
dee80384 | 554 | { |
4b65fd38 | 555 | memcpy (saved_quit, quit_return, sizeof (SIGJMP_BUF)); |
dee80384 JK |
556 | quit_pre_print = errstring; |
557 | } | |
172559ec | 558 | |
4b65fd38 | 559 | if (SIGSETJMP (tmp_jmp) == 0) |
172559ec JK |
560 | { |
561 | if (mask & RETURN_MASK_ERROR) | |
4b65fd38 | 562 | memcpy (error_return, tmp_jmp, sizeof (SIGJMP_BUF)); |
172559ec | 563 | if (mask & RETURN_MASK_QUIT) |
4b65fd38 | 564 | memcpy (quit_return, tmp_jmp, sizeof (SIGJMP_BUF)); |
172559ec JK |
565 | val = (*func) (args); |
566 | } | |
567 | else | |
568 | val = 0; | |
569 | ||
570 | restore_cleanups (saved_cleanup_chain); | |
571 | ||
172559ec | 572 | if (mask & RETURN_MASK_ERROR) |
dee80384 | 573 | { |
4b65fd38 | 574 | memcpy (error_return, saved_error, sizeof (SIGJMP_BUF)); |
dee80384 JK |
575 | error_pre_print = saved_error_pre_print; |
576 | } | |
172559ec | 577 | if (mask & RETURN_MASK_QUIT) |
dee80384 | 578 | { |
4b65fd38 | 579 | memcpy (quit_return, saved_quit, sizeof (SIGJMP_BUF)); |
dee80384 JK |
580 | quit_pre_print = saved_quit_pre_print; |
581 | } | |
172559ec JK |
582 | return val; |
583 | } | |
584 | ||
585 | /* Handler for SIGHUP. */ | |
586 | ||
4ce7ba51 | 587 | #ifdef SIGHUP |
172559ec JK |
588 | static void |
589 | disconnect (signo) | |
590 | int signo; | |
591 | { | |
592 | catch_errors (quit_cover, NULL, | |
593 | "Could not kill the program being debugged", RETURN_MASK_ALL); | |
594 | signal (SIGHUP, SIG_DFL); | |
595 | kill (getpid (), SIGHUP); | |
596 | } | |
597 | ||
598 | /* Just a little helper function for disconnect(). */ | |
599 | ||
600 | static int | |
601 | quit_cover (s) | |
602 | char *s; | |
603 | { | |
604 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
605 | This prevents asking the user dumb questions. */ | |
606 | quit_command((char *)0, 0); | |
607 | return 0; | |
608 | } | |
4ce7ba51 | 609 | #endif /* defined SIGHUP */ |
172559ec JK |
610 | \f |
611 | /* Line number we are currently in in a file which is being sourced. */ | |
612 | static int source_line_number; | |
613 | ||
614 | /* Name of the file we are sourcing. */ | |
615 | static char *source_file_name; | |
616 | ||
617 | /* Buffer containing the error_pre_print used by the source stuff. | |
618 | Malloc'd. */ | |
619 | static char *source_error; | |
620 | static int source_error_allocated; | |
621 | ||
622 | /* Something to glom on to the start of error_pre_print if source_file_name | |
623 | is set. */ | |
624 | static char *source_pre_error; | |
625 | ||
626 | /* Clean up on error during a "source" command (or execution of a | |
627 | user-defined command). */ | |
628 | ||
629 | static void | |
630 | source_cleanup (stream) | |
631 | FILE *stream; | |
632 | { | |
633 | /* Restore the previous input stream. */ | |
634 | instream = stream; | |
635 | } | |
636 | ||
637 | /* Read commands from STREAM. */ | |
638 | void | |
639 | read_command_file (stream) | |
640 | FILE *stream; | |
641 | { | |
642 | struct cleanup *cleanups; | |
643 | ||
ad3b8c4a | 644 | cleanups = make_cleanup ((make_cleanup_func) source_cleanup, instream); |
172559ec JK |
645 | instream = stream; |
646 | command_loop (); | |
647 | do_cleanups (cleanups); | |
648 | } | |
649 | \f | |
b607efe7 | 650 | extern void init_proc PARAMS ((void)); |
172559ec | 651 | |
43ab4ba5 SS |
652 | void (*pre_init_ui_hook) PARAMS ((void)); |
653 | ||
172559ec | 654 | void |
2476848a MH |
655 | gdb_init (argv0) |
656 | char *argv0; | |
172559ec | 657 | { |
43ab4ba5 SS |
658 | if (pre_init_ui_hook) |
659 | pre_init_ui_hook (); | |
660 | ||
172559ec JK |
661 | /* Run the init function of each source file */ |
662 | ||
b7ec5b8d FF |
663 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
664 | current_directory = gdb_dirbuf; | |
f36b58b1 | 665 | |
172559ec | 666 | init_cmd_lists (); /* This needs to be done first */ |
754e5da2 SG |
667 | initialize_targets (); /* Setup target_terminal macros for utils.c */ |
668 | initialize_utils (); /* Make errors and warnings possible */ | |
172559ec JK |
669 | initialize_all_files (); |
670 | init_main (); /* But that omits this file! Do it now */ | |
671 | init_signals (); | |
672 | ||
673 | init_proc (); | |
674 | ||
675 | /* We need a default language for parsing expressions, so simple things like | |
676 | "set width 0" won't fail if no language is explicitly set in a config file | |
677 | or implicitly set by reading an executable during startup. */ | |
678 | set_language (language_c); | |
679 | expected_language = current_language; /* don't warn about the change. */ | |
754e5da2 SG |
680 | |
681 | if (init_ui_hook) | |
2476848a | 682 | init_ui_hook (argv0); |
172559ec JK |
683 | } |
684 | ||
e52bfe0c JL |
685 | /* Allocate, initialize a new command line structure for one of the |
686 | control commands (if/while). */ | |
687 | ||
688 | static struct command_line * | |
689 | build_command_line (type, args) | |
690 | enum command_control_type type; | |
691 | char *args; | |
692 | { | |
693 | struct command_line *cmd; | |
694 | ||
a25ffb08 JL |
695 | if (args == NULL) |
696 | error ("if/while commands require arguments.\n"); | |
697 | ||
e52bfe0c JL |
698 | cmd = (struct command_line *)xmalloc (sizeof (struct command_line)); |
699 | cmd->next = NULL; | |
700 | cmd->control_type = type; | |
701 | ||
702 | cmd->body_count = 1; | |
703 | cmd->body_list | |
704 | = (struct command_line **)xmalloc (sizeof (struct command_line *) | |
705 | * cmd->body_count); | |
706 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); | |
707 | cmd->line = savestring (args, strlen (args)); | |
708 | return cmd; | |
709 | } | |
710 | ||
711 | /* Build and return a new command structure for the control commands | |
712 | such as "if" and "while". */ | |
713 | ||
714 | static struct command_line * | |
715 | get_command_line (type, arg) | |
716 | enum command_control_type type; | |
717 | char *arg; | |
718 | { | |
719 | struct command_line *cmd; | |
720 | struct cleanup *old_chain = NULL; | |
721 | ||
722 | /* Allocate and build a new command line structure. */ | |
723 | cmd = build_command_line (type, arg); | |
724 | ||
ad3b8c4a | 725 | old_chain = make_cleanup ((make_cleanup_func) free_command_lines, &cmd); |
e52bfe0c JL |
726 | |
727 | /* Read in the body of this command. */ | |
728 | if (recurse_read_control_structure (cmd) == invalid_control) | |
729 | { | |
730 | warning ("error reading in control structure\n"); | |
731 | do_cleanups (old_chain); | |
732 | return NULL; | |
733 | } | |
734 | ||
735 | discard_cleanups (old_chain); | |
736 | return cmd; | |
737 | } | |
738 | ||
0f8cdd9b JL |
739 | /* Recursively print a command (including full control structures). */ |
740 | void | |
741 | print_command_line (cmd, depth) | |
742 | struct command_line *cmd; | |
743 | unsigned int depth; | |
744 | { | |
745 | unsigned int i; | |
746 | ||
747 | if (depth) | |
748 | { | |
749 | for (i = 0; i < depth; i++) | |
750 | fputs_filtered (" ", gdb_stdout); | |
751 | } | |
752 | ||
753 | /* A simple command, print it and return. */ | |
754 | if (cmd->control_type == simple_control) | |
755 | { | |
756 | fputs_filtered (cmd->line, gdb_stdout); | |
757 | fputs_filtered ("\n", gdb_stdout); | |
758 | return; | |
759 | } | |
760 | ||
761 | /* loop_continue to jump to the start of a while loop, print it | |
762 | and return. */ | |
763 | if (cmd->control_type == continue_control) | |
764 | { | |
765 | fputs_filtered ("loop_continue\n", gdb_stdout); | |
766 | return; | |
767 | } | |
768 | ||
769 | /* loop_break to break out of a while loop, print it and return. */ | |
770 | if (cmd->control_type == break_control) | |
771 | { | |
772 | fputs_filtered ("loop_break\n", gdb_stdout); | |
773 | return; | |
774 | } | |
775 | ||
776 | /* A while command. Recursively print its subcommands before returning. */ | |
777 | if (cmd->control_type == while_control) | |
778 | { | |
779 | struct command_line *list; | |
780 | fputs_filtered ("while ", gdb_stdout); | |
781 | fputs_filtered (cmd->line, gdb_stdout); | |
782 | fputs_filtered ("\n", gdb_stdout); | |
783 | list = *cmd->body_list; | |
784 | while (list) | |
785 | { | |
786 | print_command_line (list, depth + 1); | |
787 | list = list->next; | |
788 | } | |
789 | } | |
790 | ||
791 | /* An if command. Recursively print both arms before returning. */ | |
792 | if (cmd->control_type == if_control) | |
793 | { | |
794 | fputs_filtered ("if ", gdb_stdout); | |
795 | fputs_filtered (cmd->line, gdb_stdout); | |
796 | fputs_filtered ("\n", gdb_stdout); | |
797 | /* The true arm. */ | |
798 | print_command_line (cmd->body_list[0], depth + 1); | |
799 | ||
800 | /* Show the false arm if it exists. */ | |
801 | if (cmd->body_count == 2) | |
802 | { | |
803 | if (depth) | |
804 | { | |
805 | for (i = 0; i < depth; i++) | |
806 | fputs_filtered (" ", gdb_stdout); | |
807 | } | |
808 | fputs_filtered ("else\n", gdb_stdout); | |
809 | print_command_line (cmd->body_list[1], depth + 1); | |
810 | } | |
811 | if (depth) | |
812 | { | |
813 | for (i = 0; i < depth; i++) | |
814 | fputs_filtered (" ", gdb_stdout); | |
815 | } | |
816 | fputs_filtered ("end\n", gdb_stdout); | |
817 | } | |
818 | } | |
819 | ||
e52bfe0c JL |
820 | /* Execute the command in CMD. */ |
821 | ||
0f8cdd9b | 822 | enum command_control_type |
e52bfe0c JL |
823 | execute_control_command (cmd) |
824 | struct command_line *cmd; | |
825 | { | |
826 | struct expression *expr; | |
827 | struct command_line *current; | |
828 | struct cleanup *old_chain = 0; | |
e52bfe0c | 829 | value_ptr val; |
e20c36ba | 830 | value_ptr val_mark; |
e52bfe0c JL |
831 | int loop; |
832 | enum command_control_type ret; | |
0f8cdd9b | 833 | char *new_line; |
e52bfe0c JL |
834 | |
835 | switch (cmd->control_type) | |
836 | { | |
837 | case simple_control: | |
838 | /* A simple command, execute it and return. */ | |
0f8cdd9b JL |
839 | new_line = insert_args (cmd->line); |
840 | if (!new_line) | |
841 | return invalid_control; | |
ad3b8c4a JM |
842 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
843 | &new_line); | |
0f8cdd9b JL |
844 | execute_command (new_line, 0); |
845 | ret = cmd->control_type; | |
846 | break; | |
e52bfe0c JL |
847 | |
848 | case continue_control: | |
849 | case break_control: | |
850 | /* Return for "continue", and "break" so we can either | |
851 | continue the loop at the top, or break out. */ | |
0f8cdd9b JL |
852 | ret = cmd->control_type; |
853 | break; | |
e52bfe0c JL |
854 | |
855 | case while_control: | |
856 | { | |
857 | /* Parse the loop control expression for the while statement. */ | |
0f8cdd9b JL |
858 | new_line = insert_args (cmd->line); |
859 | if (!new_line) | |
860 | return invalid_control; | |
ad3b8c4a JM |
861 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
862 | &new_line); | |
0f8cdd9b | 863 | expr = parse_expression (new_line); |
ad3b8c4a | 864 | make_cleanup ((make_cleanup_func) free_current_contents, &expr); |
0f8cdd9b | 865 | |
e52bfe0c | 866 | ret = simple_control; |
b5776522 | 867 | loop = 1; |
e52bfe0c JL |
868 | |
869 | /* Keep iterating so long as the expression is true. */ | |
b5776522 | 870 | while (loop == 1) |
e52bfe0c | 871 | { |
e20c36ba JL |
872 | int cond_result; |
873 | ||
24ecc17a JL |
874 | QUIT; |
875 | ||
e52bfe0c | 876 | /* Evaluate the expression. */ |
e20c36ba | 877 | val_mark = value_mark (); |
e52bfe0c | 878 | val = evaluate_expression (expr); |
e20c36ba JL |
879 | cond_result = value_true (val); |
880 | value_free_to_mark (val_mark); | |
e52bfe0c JL |
881 | |
882 | /* If the value is false, then break out of the loop. */ | |
e20c36ba | 883 | if (!cond_result) |
e52bfe0c JL |
884 | break; |
885 | ||
886 | /* Execute the body of the while statement. */ | |
887 | current = *cmd->body_list; | |
888 | while (current) | |
889 | { | |
890 | ret = execute_control_command (current); | |
891 | ||
892 | /* If we got an error, or a "break" command, then stop | |
893 | looping. */ | |
894 | if (ret == invalid_control || ret == break_control) | |
895 | { | |
b5776522 | 896 | loop = 0; |
e52bfe0c JL |
897 | break; |
898 | } | |
899 | ||
900 | /* If we got a "continue" command, then restart the loop | |
901 | at this point. */ | |
902 | if (ret == continue_control) | |
903 | break; | |
904 | ||
905 | /* Get the next statement. */ | |
906 | current = current->next; | |
907 | } | |
908 | } | |
909 | ||
910 | /* Reset RET so that we don't recurse the break all the way down. */ | |
911 | if (ret == break_control) | |
912 | ret = simple_control; | |
913 | ||
914 | break; | |
915 | } | |
916 | ||
917 | case if_control: | |
918 | { | |
0f8cdd9b JL |
919 | new_line = insert_args (cmd->line); |
920 | if (!new_line) | |
921 | return invalid_control; | |
ad3b8c4a JM |
922 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
923 | &new_line); | |
e52bfe0c | 924 | /* Parse the conditional for the if statement. */ |
0f8cdd9b | 925 | expr = parse_expression (new_line); |
ad3b8c4a | 926 | make_cleanup ((make_cleanup_func) free_current_contents, &expr); |
e52bfe0c JL |
927 | |
928 | current = NULL; | |
929 | ret = simple_control; | |
930 | ||
931 | /* Evaluate the conditional. */ | |
e20c36ba | 932 | val_mark = value_mark (); |
e52bfe0c JL |
933 | val = evaluate_expression (expr); |
934 | ||
935 | /* Choose which arm to take commands from based on the value of the | |
936 | conditional expression. */ | |
937 | if (value_true (val)) | |
938 | current = *cmd->body_list; | |
939 | else if (cmd->body_count == 2) | |
940 | current = *(cmd->body_list + 1); | |
e20c36ba | 941 | value_free_to_mark (val_mark); |
e52bfe0c JL |
942 | |
943 | /* Execute commands in the given arm. */ | |
944 | while (current) | |
945 | { | |
946 | ret = execute_control_command (current); | |
947 | ||
948 | /* If we got an error, get out. */ | |
949 | if (ret != simple_control) | |
950 | break; | |
951 | ||
952 | /* Get the next statement in the body. */ | |
953 | current = current->next; | |
954 | } | |
0f8cdd9b | 955 | |
e52bfe0c JL |
956 | break; |
957 | } | |
958 | ||
959 | default: | |
960 | warning ("Invalid control type in command structure."); | |
961 | return invalid_control; | |
962 | } | |
963 | ||
964 | if (old_chain) | |
965 | do_cleanups (old_chain); | |
966 | ||
967 | return ret; | |
968 | } | |
969 | ||
970 | /* "while" command support. Executes a body of statements while the | |
971 | loop condition is nonzero. */ | |
972 | ||
973 | static void | |
974 | while_command (arg, from_tty) | |
975 | char *arg; | |
976 | int from_tty; | |
977 | { | |
978 | struct command_line *command = NULL; | |
979 | ||
980 | control_level = 1; | |
981 | command = get_command_line (while_control, arg); | |
982 | ||
983 | if (command == NULL) | |
984 | return; | |
985 | ||
986 | execute_control_command (command); | |
987 | free_command_lines (&command); | |
988 | } | |
989 | ||
990 | /* "if" command support. Execute either the true or false arm depending | |
991 | on the value of the if conditional. */ | |
992 | ||
993 | static void | |
994 | if_command (arg, from_tty) | |
995 | char *arg; | |
996 | int from_tty; | |
997 | { | |
998 | struct command_line *command = NULL; | |
999 | ||
1000 | control_level = 1; | |
1001 | command = get_command_line (if_control, arg); | |
1002 | ||
1003 | if (command == NULL) | |
1004 | return; | |
1005 | ||
1006 | execute_control_command (command); | |
1007 | free_command_lines (&command); | |
1008 | } | |
1009 | ||
0f8cdd9b JL |
1010 | /* Cleanup */ |
1011 | static void | |
1012 | arg_cleanup () | |
1013 | { | |
1014 | struct user_args *oargs = user_args; | |
1015 | if (!user_args) | |
1016 | fatal ("Internal error, arg_cleanup called with no user args.\n"); | |
1017 | ||
1018 | user_args = user_args->next; | |
1019 | free (oargs); | |
1020 | } | |
1021 | ||
1022 | /* Bind the incomming arguments for a user defined command to | |
1023 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
1024 | ||
1025 | static struct cleanup * | |
1026 | setup_user_args (p) | |
1027 | char *p; | |
1028 | { | |
1029 | struct user_args *args; | |
1030 | struct cleanup *old_chain; | |
1031 | unsigned int arg_count = 0; | |
1032 | ||
1033 | args = (struct user_args *)xmalloc (sizeof (struct user_args)); | |
1034 | memset (args, 0, sizeof (struct user_args)); | |
1035 | ||
1036 | args->next = user_args; | |
1037 | user_args = args; | |
1038 | ||
ad3b8c4a | 1039 | old_chain = make_cleanup ((make_cleanup_func) arg_cleanup, 0); |
0f8cdd9b JL |
1040 | |
1041 | if (p == NULL) | |
1042 | return old_chain; | |
1043 | ||
1044 | while (*p) | |
1045 | { | |
1046 | char *start_arg; | |
ac7a8760 PS |
1047 | int squote = 0; |
1048 | int dquote = 0; | |
1049 | int bsquote = 0; | |
0f8cdd9b JL |
1050 | |
1051 | if (arg_count >= MAXUSERARGS) | |
1052 | { | |
1053 | error ("user defined function may only have %d arguments.\n", | |
1054 | MAXUSERARGS); | |
1055 | return old_chain; | |
1056 | } | |
1057 | ||
1058 | /* Strip whitespace. */ | |
1059 | while (*p == ' ' || *p == '\t') | |
1060 | p++; | |
1061 | ||
1062 | /* P now points to an argument. */ | |
1063 | start_arg = p; | |
1064 | user_args->a[arg_count].arg = p; | |
1065 | ||
1066 | /* Get to the end of this argument. */ | |
ac7a8760 PS |
1067 | while (*p) |
1068 | { | |
1069 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
1070 | break; | |
1071 | else | |
1072 | { | |
1073 | if (bsquote) | |
1074 | bsquote = 0; | |
1075 | else if (*p == '\\') | |
1076 | bsquote = 1; | |
1077 | else if (squote) | |
1078 | { | |
1079 | if (*p == '\'') | |
1080 | squote = 0; | |
1081 | } | |
1082 | else if (dquote) | |
1083 | { | |
1084 | if (*p == '"') | |
1085 | dquote = 0; | |
1086 | } | |
1087 | else | |
1088 | { | |
1089 | if (*p == '\'') | |
1090 | squote = 1; | |
1091 | else if (*p == '"') | |
1092 | dquote = 1; | |
1093 | } | |
1094 | p++; | |
1095 | } | |
1096 | } | |
0f8cdd9b JL |
1097 | |
1098 | user_args->a[arg_count].len = p - start_arg; | |
1099 | arg_count++; | |
1100 | user_args->count++; | |
1101 | } | |
1102 | return old_chain; | |
1103 | } | |
1104 | ||
1105 | /* Given character string P, return a point to the first argument ($arg), | |
1106 | or NULL if P contains no arguments. */ | |
1107 | ||
1108 | static char * | |
1109 | locate_arg (p) | |
1110 | char *p; | |
1111 | { | |
e3be225e | 1112 | while ((p = strchr (p, '$'))) |
0f8cdd9b JL |
1113 | { |
1114 | if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4])) | |
1115 | return p; | |
1116 | p++; | |
1117 | } | |
1118 | return NULL; | |
1119 | } | |
1120 | ||
1121 | /* Insert the user defined arguments stored in user_arg into the $arg | |
1122 | arguments found in line, with the updated copy being placed into nline. */ | |
1123 | ||
1124 | static char * | |
1125 | insert_args (line) | |
1126 | char *line; | |
1127 | { | |
1128 | char *p, *save_line, *new_line; | |
1129 | unsigned len, i; | |
1130 | ||
1131 | /* First we need to know how much memory to allocate for the new line. */ | |
1132 | save_line = line; | |
1133 | len = 0; | |
e3be225e | 1134 | while ((p = locate_arg (line))) |
0f8cdd9b JL |
1135 | { |
1136 | len += p - line; | |
1137 | i = p[4] - '0'; | |
1138 | ||
1139 | if (i >= user_args->count) | |
1140 | { | |
1141 | error ("Missing argument %d in user function.\n", i); | |
1142 | return NULL; | |
1143 | } | |
1144 | len += user_args->a[i].len; | |
1145 | line = p + 5; | |
1146 | } | |
1147 | ||
1148 | /* Don't forget the tail. */ | |
1149 | len += strlen (line); | |
1150 | ||
1151 | /* Allocate space for the new line and fill it in. */ | |
1152 | new_line = (char *)xmalloc (len + 1); | |
1153 | if (new_line == NULL) | |
1154 | return NULL; | |
1155 | ||
1156 | /* Restore pointer to beginning of old line. */ | |
1157 | line = save_line; | |
1158 | ||
1159 | /* Save pointer to beginning of new line. */ | |
1160 | save_line = new_line; | |
1161 | ||
e3be225e | 1162 | while ((p = locate_arg (line))) |
0f8cdd9b JL |
1163 | { |
1164 | int i, len; | |
1165 | ||
1166 | memcpy (new_line, line, p - line); | |
1167 | new_line += p - line; | |
1168 | i = p[4] - '0'; | |
1169 | ||
e3be225e SS |
1170 | len = user_args->a[i].len; |
1171 | if (len) | |
0f8cdd9b JL |
1172 | { |
1173 | memcpy (new_line, user_args->a[i].arg, len); | |
1174 | new_line += len; | |
1175 | } | |
1176 | line = p + 5; | |
1177 | } | |
1178 | /* Don't forget the tail. */ | |
1179 | strcpy (new_line, line); | |
1180 | ||
1181 | /* Return a pointer to the beginning of the new line. */ | |
1182 | return save_line; | |
1183 | } | |
1184 | ||
172559ec JK |
1185 | void |
1186 | execute_user_command (c, args) | |
1187 | struct cmd_list_element *c; | |
1188 | char *args; | |
1189 | { | |
1190 | register struct command_line *cmdlines; | |
1191 | struct cleanup *old_chain; | |
e52bfe0c JL |
1192 | enum command_control_type ret; |
1193 | ||
0f8cdd9b | 1194 | old_chain = setup_user_args (args); |
172559ec JK |
1195 | |
1196 | cmdlines = c->user_commands; | |
1197 | if (cmdlines == 0) | |
1198 | /* Null command */ | |
1199 | return; | |
1200 | ||
1201 | /* Set the instream to 0, indicating execution of a | |
1202 | user-defined function. */ | |
ad3b8c4a | 1203 | old_chain = make_cleanup ((make_cleanup_func) source_cleanup, instream); |
172559ec JK |
1204 | instream = (FILE *) 0; |
1205 | while (cmdlines) | |
1206 | { | |
e52bfe0c JL |
1207 | ret = execute_control_command (cmdlines); |
1208 | if (ret != simple_control && ret != break_control) | |
1209 | { | |
1210 | warning ("Error in control structure.\n"); | |
1211 | break; | |
1212 | } | |
172559ec JK |
1213 | cmdlines = cmdlines->next; |
1214 | } | |
1215 | do_cleanups (old_chain); | |
1216 | } | |
1217 | ||
1218 | /* Execute the line P as a command. | |
1219 | Pass FROM_TTY as second argument to the defining function. */ | |
1220 | ||
1221 | void | |
1222 | execute_command (p, from_tty) | |
1223 | char *p; | |
1224 | int from_tty; | |
1225 | { | |
1226 | register struct cmd_list_element *c; | |
1227 | register enum language flang; | |
1228 | static int warned = 0; | |
b607efe7 | 1229 | /* FIXME: These should really be in an appropriate header file */ |
b607efe7 | 1230 | extern void serial_log_command PARAMS ((const char *)); |
172559ec JK |
1231 | |
1232 | free_all_values (); | |
1233 | ||
5959df8e JL |
1234 | /* Force cleanup of any alloca areas if using C alloca instead of |
1235 | a builtin alloca. */ | |
1236 | alloca (0); | |
1237 | ||
172559ec JK |
1238 | /* This can happen when command_line_input hits end of file. */ |
1239 | if (p == NULL) | |
1240 | return; | |
e52bfe0c | 1241 | |
d9951af4 | 1242 | serial_log_command (p); |
e8f1ad9a | 1243 | |
172559ec JK |
1244 | while (*p == ' ' || *p == '\t') p++; |
1245 | if (*p) | |
1246 | { | |
1247 | char *arg; | |
e52bfe0c | 1248 | |
172559ec JK |
1249 | c = lookup_cmd (&p, cmdlist, "", 0, 1); |
1250 | /* Pass null arg rather than an empty one. */ | |
1251 | arg = *p ? p : 0; | |
1252 | ||
080868b4 PS |
1253 | /* Clear off trailing whitespace, except for set and complete command. */ |
1254 | if (arg && c->type != set_cmd && c->function.cfunc != complete_command) | |
1255 | { | |
1256 | p = arg + strlen (arg) - 1; | |
1257 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
1258 | p--; | |
1259 | *(p + 1) = '\0'; | |
1260 | } | |
1261 | ||
172559ec JK |
1262 | /* If this command has been hooked, run the hook first. */ |
1263 | if (c->hook) | |
1264 | execute_user_command (c->hook, (char *)0); | |
1265 | ||
1266 | if (c->class == class_user) | |
1267 | execute_user_command (c, arg); | |
1268 | else if (c->type == set_cmd || c->type == show_cmd) | |
1269 | do_setshow_command (arg, from_tty & caution, c); | |
1270 | else if (c->function.cfunc == NO_FUNCTION) | |
1271 | error ("That is not a command, just a help topic."); | |
479f0f18 SG |
1272 | else if (call_command_hook) |
1273 | call_command_hook (c, arg, from_tty & caution); | |
172559ec JK |
1274 | else |
1275 | (*c->function.cfunc) (arg, from_tty & caution); | |
1276 | } | |
1277 | ||
1278 | /* Tell the user if the language has changed (except first time). */ | |
1279 | if (current_language != expected_language) | |
1280 | { | |
1281 | if (language_mode == language_mode_auto) { | |
1282 | language_info (1); /* Print what changed. */ | |
1283 | } | |
1284 | warned = 0; | |
1285 | } | |
1286 | ||
1287 | /* Warn the user if the working language does not match the | |
1288 | language of the current frame. Only warn the user if we are | |
1289 | actually running the program, i.e. there is a stack. */ | |
1290 | /* FIXME: This should be cacheing the frame and only running when | |
1291 | the frame changes. */ | |
43ab4ba5 | 1292 | |
172559ec | 1293 | if (target_has_stack) |
172559ec | 1294 | { |
43ab4ba5 SS |
1295 | flang = get_frame_language (); |
1296 | if (!warned | |
1297 | && flang != language_unknown | |
1298 | && flang != current_language->la_language) | |
1299 | { | |
1300 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1301 | warned = 1; | |
1302 | } | |
172559ec | 1303 | } |
172559ec JK |
1304 | } |
1305 | ||
1306 | /* ARGSUSED */ | |
1307 | static void | |
1308 | command_loop_marker (foo) | |
1309 | int foo; | |
1310 | { | |
1311 | } | |
1312 | ||
1313 | /* Read commands from `instream' and execute them | |
1314 | until end of file or error reading instream. */ | |
43ab4ba5 | 1315 | |
172559ec JK |
1316 | void |
1317 | command_loop () | |
1318 | { | |
1319 | struct cleanup *old_chain; | |
1320 | char *command; | |
1321 | int stdin_is_tty = ISATTY (stdin); | |
43ab4ba5 | 1322 | long time_at_cmd_start; |
38d715a4 | 1323 | #ifdef HAVE_SBRK |
83ebf439 | 1324 | long space_at_cmd_start; |
38d715a4 | 1325 | #endif |
43ab4ba5 SS |
1326 | extern int display_time; |
1327 | extern int display_space; | |
172559ec | 1328 | |
41756e56 | 1329 | while (instream && !feof (instream)) |
172559ec JK |
1330 | { |
1331 | if (window_hook && instream == stdin) | |
1332 | (*window_hook) (instream, prompt); | |
1333 | ||
1334 | quit_flag = 0; | |
1335 | if (instream == stdin && stdin_is_tty) | |
1336 | reinitialize_more_filter (); | |
ad3b8c4a | 1337 | old_chain = make_cleanup ((make_cleanup_func) command_loop_marker, 0); |
172559ec JK |
1338 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, |
1339 | instream == stdin, "prompt"); | |
1340 | if (command == 0) | |
1341 | return; | |
43ab4ba5 SS |
1342 | |
1343 | time_at_cmd_start = get_run_time (); | |
1344 | ||
83ebf439 SS |
1345 | if (display_space) |
1346 | { | |
38d715a4 | 1347 | #ifdef HAVE_SBRK |
83ebf439 SS |
1348 | extern char **environ; |
1349 | char *lim = (char *) sbrk (0); | |
1350 | ||
1351 | space_at_cmd_start = (long) (lim - (char *) &environ); | |
38d715a4 | 1352 | #endif |
83ebf439 SS |
1353 | } |
1354 | ||
172559ec JK |
1355 | execute_command (command, instream == stdin); |
1356 | /* Do any commands attached to breakpoint we stopped at. */ | |
1357 | bpstat_do_actions (&stop_bpstat); | |
1358 | do_cleanups (old_chain); | |
43ab4ba5 SS |
1359 | |
1360 | if (display_time) | |
1361 | { | |
1362 | long cmd_time = get_run_time () - time_at_cmd_start; | |
1363 | ||
1364 | printf_unfiltered ("Command execution time: %ld.%06ld\n", | |
1365 | cmd_time / 1000000, cmd_time % 1000000); | |
1366 | } | |
1367 | ||
1368 | if (display_space) | |
1369 | { | |
38d715a4 | 1370 | #ifdef HAVE_SBRK |
43ab4ba5 SS |
1371 | extern char **environ; |
1372 | char *lim = (char *) sbrk (0); | |
83ebf439 SS |
1373 | long space_now = lim - (char *) &environ; |
1374 | long space_diff = space_now - space_at_cmd_start; | |
43ab4ba5 | 1375 | |
83ebf439 SS |
1376 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", |
1377 | space_now, | |
1378 | (space_diff >= 0 ? '+' : '-'), | |
1379 | space_diff); | |
38d715a4 | 1380 | #endif |
43ab4ba5 | 1381 | } |
172559ec JK |
1382 | } |
1383 | } | |
1384 | \f | |
1385 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1386 | ||
1387 | void | |
1388 | dont_repeat () | |
1389 | { | |
1390 | if (server_command) | |
1391 | return; | |
1392 | ||
1393 | /* If we aren't reading from standard input, we are saving the last | |
1394 | thing read from stdin in line and don't want to delete it. Null lines | |
1395 | won't repeat here in any case. */ | |
1396 | if (instream == stdin) | |
1397 | *line = 0; | |
1398 | } | |
1399 | \f | |
1400 | /* Read a line from the stream "instream" without command line editing. | |
1401 | ||
1402 | It prints PRROMPT once at the start. | |
e52bfe0c | 1403 | Action is compatible with "readline", e.g. space for the result is |
172559ec JK |
1404 | malloc'd and should be freed by the caller. |
1405 | ||
1406 | A NULL return means end of file. */ | |
1407 | char * | |
1408 | gdb_readline (prrompt) | |
1409 | char *prrompt; | |
1410 | { | |
1411 | int c; | |
1412 | char *result; | |
1413 | int input_index = 0; | |
1414 | int result_size = 80; | |
1415 | ||
1416 | if (prrompt) | |
1417 | { | |
1418 | /* Don't use a _filtered function here. It causes the assumed | |
1419 | character position to be off, since the newline we read from | |
1420 | the user is not accounted for. */ | |
1421 | fputs_unfiltered (prrompt, gdb_stdout); | |
172559ec JK |
1422 | #ifdef MPW |
1423 | /* Move to a new line so the entered line doesn't have a prompt | |
1424 | on the front of it. */ | |
1425 | fputs_unfiltered ("\n", gdb_stdout); | |
1426 | #endif /* MPW */ | |
172559ec JK |
1427 | gdb_flush (gdb_stdout); |
1428 | } | |
e52bfe0c | 1429 | |
172559ec JK |
1430 | result = (char *) xmalloc (result_size); |
1431 | ||
1432 | while (1) | |
1433 | { | |
1434 | /* Read from stdin if we are executing a user defined command. | |
1435 | This is the right thing for prompt_for_continue, at least. */ | |
1436 | c = fgetc (instream ? instream : stdin); | |
1437 | ||
1438 | if (c == EOF) | |
1439 | { | |
1440 | if (input_index > 0) | |
1441 | /* The last line does not end with a newline. Return it, and | |
1442 | if we are called again fgetc will still return EOF and | |
1443 | we'll return NULL then. */ | |
1444 | break; | |
1445 | free (result); | |
1446 | return NULL; | |
1447 | } | |
1448 | ||
1449 | if (c == '\n') | |
3cee93ac | 1450 | #ifndef CRLF_SOURCE_FILES |
172559ec | 1451 | break; |
3cee93ac CF |
1452 | #else |
1453 | { | |
1454 | if (input_index > 0 && result[input_index - 1] == '\r') | |
1455 | input_index--; | |
1456 | break; | |
1457 | } | |
1458 | #endif | |
172559ec JK |
1459 | |
1460 | result[input_index++] = c; | |
1461 | while (input_index >= result_size) | |
1462 | { | |
1463 | result_size *= 2; | |
1464 | result = (char *) xrealloc (result, result_size); | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | result[input_index++] = '\0'; | |
1469 | return result; | |
1470 | } | |
1471 | ||
1472 | /* Variables which control command line editing and history | |
1473 | substitution. These variables are given default values at the end | |
1474 | of this file. */ | |
1475 | static int command_editing_p; | |
1476 | static int history_expansion_p; | |
1477 | static int write_history_p; | |
1478 | static int history_size; | |
1479 | static char *history_filename; | |
1480 | ||
1481 | /* readline uses the word breaks for two things: | |
1482 | (1) In figuring out where to point the TEXT parameter to the | |
1483 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1484 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1485 | it does affect how much stuff M-? lists. | |
1486 | (2) If one of the matches contains a word break character, readline | |
1487 | will quote it. That's why we switch between | |
1488 | gdb_completer_word_break_characters and | |
1489 | gdb_completer_command_word_break_characters. I'm not sure when | |
1490 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1491 | ||
1492 | /* Variables which are necessary for fancy command line editing. */ | |
1493 | char *gdb_completer_word_break_characters = | |
1494 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; | |
1495 | ||
1496 | /* When completing on command names, we remove '-' from the list of | |
1497 | word break characters, since we use it in command names. If the | |
1498 | readline library sees one in any of the current completion strings, | |
1499 | it thinks that the string needs to be quoted and automatically supplies | |
1500 | a leading quote. */ | |
1501 | char *gdb_completer_command_word_break_characters = | |
1502 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1503 | ||
1504 | /* Characters that can be used to quote completion strings. Note that we | |
1505 | can't include '"' because the gdb C parser treats such quoted sequences | |
1506 | as strings. */ | |
1507 | char *gdb_completer_quote_characters = | |
1508 | "'"; | |
1509 | ||
1510 | /* Functions that are used as part of the fancy command line editing. */ | |
1511 | ||
1512 | /* This can be used for functions which don't want to complete on symbols | |
1513 | but don't want to complete on anything else either. */ | |
1514 | /* ARGSUSED */ | |
1515 | char ** | |
1516 | noop_completer (text, prefix) | |
1517 | char *text; | |
1518 | char *prefix; | |
1519 | { | |
1520 | return NULL; | |
1521 | } | |
1522 | ||
1523 | /* Complete on filenames. */ | |
1524 | char ** | |
1525 | filename_completer (text, word) | |
1526 | char *text; | |
1527 | char *word; | |
1528 | { | |
1529 | /* From readline. */ | |
3f550b59 | 1530 | extern char *filename_completion_function PARAMS ((char *, int)); |
172559ec JK |
1531 | int subsequent_name; |
1532 | char **return_val; | |
1533 | int return_val_used; | |
1534 | int return_val_alloced; | |
1535 | ||
1536 | return_val_used = 0; | |
1537 | /* Small for testing. */ | |
1538 | return_val_alloced = 1; | |
1539 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1540 | ||
1541 | subsequent_name = 0; | |
1542 | while (1) | |
1543 | { | |
1544 | char *p; | |
1545 | p = filename_completion_function (text, subsequent_name); | |
1546 | if (return_val_used >= return_val_alloced) | |
1547 | { | |
1548 | return_val_alloced *= 2; | |
1549 | return_val = | |
1550 | (char **) xrealloc (return_val, | |
1551 | return_val_alloced * sizeof (char *)); | |
1552 | } | |
1553 | if (p == NULL) | |
1554 | { | |
1555 | return_val[return_val_used++] = p; | |
1556 | break; | |
1557 | } | |
1558 | /* Like emacs, don't complete on old versions. Especially useful | |
1559 | in the "source" command. */ | |
1560 | if (p[strlen (p) - 1] == '~') | |
1561 | continue; | |
1562 | ||
1563 | { | |
1564 | char *q; | |
1565 | if (word == text) | |
1566 | /* Return exactly p. */ | |
1567 | return_val[return_val_used++] = p; | |
1568 | else if (word > text) | |
1569 | { | |
1570 | /* Return some portion of p. */ | |
1571 | q = xmalloc (strlen (p) + 5); | |
1572 | strcpy (q, p + (word - text)); | |
1573 | return_val[return_val_used++] = q; | |
1574 | free (p); | |
1575 | } | |
1576 | else | |
1577 | { | |
1578 | /* Return some of TEXT plus p. */ | |
1579 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1580 | strncpy (q, word, text - word); | |
1581 | q[text - word] = '\0'; | |
1582 | strcat (q, p); | |
1583 | return_val[return_val_used++] = q; | |
1584 | free (p); | |
1585 | } | |
1586 | } | |
1587 | subsequent_name = 1; | |
1588 | } | |
1589 | #if 0 | |
1590 | /* There is no way to do this just long enough to affect quote inserting | |
1591 | without also affecting the next completion. This should be fixed in | |
1592 | readline. FIXME. */ | |
1593 | /* Insure that readline does the right thing | |
1594 | with respect to inserting quotes. */ | |
1595 | rl_completer_word_break_characters = ""; | |
1596 | #endif | |
1597 | return return_val; | |
1598 | } | |
1599 | ||
1600 | /* Here are some useful test cases for completion. FIXME: These should | |
1601 | be put in the test suite. They should be tested with both M-? and TAB. | |
1602 | ||
1603 | "show output-" "radix" | |
1604 | "show output" "-radix" | |
1605 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1606 | "p " ambiguous (all symbols) | |
1607 | "info t foo" no completions | |
1608 | "info t " no completions | |
1609 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1610 | "info ajksdlfk" no completions | |
1611 | "info ajksdlfk " no completions | |
1612 | "info" " " | |
1613 | "info " ambiguous (all info commands) | |
1614 | "p \"a" no completions (string constant) | |
1615 | "p 'a" ambiguous (all symbols starting with a) | |
1616 | "p b-a" ambiguous (all symbols starting with a) | |
1617 | "p b-" ambiguous (all symbols) | |
1618 | "file Make" "file" (word break hard to screw up here) | |
1619 | "file ../gdb.stabs/we" "ird" (needs to not break word at slash) | |
1620 | */ | |
1621 | ||
1622 | /* Generate completions one by one for the completer. Each time we are | |
9ed8604f PS |
1623 | called return another potential completion to the caller. |
1624 | line_completion just completes on commands or passes the buck to the | |
1625 | command's completer function, the stuff specific to symbol completion | |
172559ec JK |
1626 | is in make_symbol_completion_list. |
1627 | ||
9ed8604f | 1628 | TEXT is the caller's idea of the "word" we are looking at. |
172559ec JK |
1629 | |
1630 | MATCHES is the number of matches that have currently been collected from | |
1631 | calling this completion function. When zero, then we need to initialize, | |
1632 | otherwise the initialization has already taken place and we can just | |
1633 | return the next potential completion string. | |
1634 | ||
9ed8604f PS |
1635 | LINE_BUFFER is available to be looked at; it contains the entire text |
1636 | of the line. POINT is the offset in that line of the cursor. You | |
1637 | should pretend that the line ends at POINT. | |
172559ec | 1638 | |
9ed8604f PS |
1639 | Returns NULL if there are no more completions, else a pointer to a string |
1640 | which is a possible completion, it is the caller's responsibility to | |
1641 | free the string. */ | |
172559ec JK |
1642 | |
1643 | static char * | |
9ed8604f | 1644 | line_completion_function (text, matches, line_buffer, point) |
172559ec JK |
1645 | char *text; |
1646 | int matches; | |
9ed8604f PS |
1647 | char *line_buffer; |
1648 | int point; | |
172559ec JK |
1649 | { |
1650 | static char **list = (char **)NULL; /* Cache of completions */ | |
1651 | static int index; /* Next cached completion */ | |
1652 | char *output = NULL; | |
1653 | char *tmp_command, *p; | |
1654 | /* Pointer within tmp_command which corresponds to text. */ | |
1655 | char *word; | |
1656 | struct cmd_list_element *c, *result_list; | |
1657 | ||
1658 | if (matches == 0) | |
1659 | { | |
1660 | /* The caller is beginning to accumulate a new set of completions, so | |
1661 | we need to find all of them now, and cache them for returning one at | |
1662 | a time on future calls. */ | |
1663 | ||
1664 | if (list) | |
1665 | { | |
1666 | /* Free the storage used by LIST, but not by the strings inside. | |
1667 | This is because rl_complete_internal () frees the strings. */ | |
1668 | free ((PTR)list); | |
1669 | } | |
1670 | list = 0; | |
1671 | index = 0; | |
1672 | ||
1673 | /* Choose the default set of word break characters to break completions. | |
1674 | If we later find out that we are doing completions on command strings | |
1675 | (as opposed to strings supplied by the individual command completer | |
1676 | functions, which can be any string) then we will switch to the | |
1677 | special word break set for command strings, which leaves out the | |
1678 | '-' character used in some commands. */ | |
1679 | ||
1680 | rl_completer_word_break_characters = | |
1681 | gdb_completer_word_break_characters; | |
1682 | ||
1683 | /* Decide whether to complete on a list of gdb commands or on symbols. */ | |
9ed8604f | 1684 | tmp_command = (char *) alloca (point + 1); |
172559ec JK |
1685 | p = tmp_command; |
1686 | ||
9ed8604f PS |
1687 | strncpy (tmp_command, line_buffer, point); |
1688 | tmp_command[point] = '\0'; | |
172559ec | 1689 | /* Since text always contains some number of characters leading up |
9ed8604f | 1690 | to point, we can find the equivalent position in tmp_command |
172559ec | 1691 | by subtracting that many characters from the end of tmp_command. */ |
9ed8604f | 1692 | word = tmp_command + point - strlen (text); |
172559ec | 1693 | |
9ed8604f | 1694 | if (point == 0) |
172559ec JK |
1695 | { |
1696 | /* An empty line we want to consider ambiguous; that is, it | |
1697 | could be any command. */ | |
1698 | c = (struct cmd_list_element *) -1; | |
1699 | result_list = 0; | |
1700 | } | |
1701 | else | |
1702 | { | |
1703 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1704 | } | |
1705 | ||
1706 | /* Move p up to the next interesting thing. */ | |
1707 | while (*p == ' ' || *p == '\t') | |
1708 | { | |
1709 | p++; | |
1710 | } | |
1711 | ||
1712 | if (!c) | |
1713 | { | |
1714 | /* It is an unrecognized command. So there are no | |
1715 | possible completions. */ | |
1716 | list = NULL; | |
1717 | } | |
1718 | else if (c == (struct cmd_list_element *) -1) | |
1719 | { | |
1720 | char *q; | |
1721 | ||
1722 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1723 | doesn't advance over that thing itself. Do so now. */ | |
1724 | q = p; | |
1725 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1726 | ++q; | |
9ed8604f | 1727 | if (q != tmp_command + point) |
172559ec JK |
1728 | { |
1729 | /* There is something beyond the ambiguous | |
1730 | command, so there are no possible completions. For | |
1731 | example, "info t " or "info t foo" does not complete | |
1732 | to anything, because "info t" can be "info target" or | |
1733 | "info terminal". */ | |
1734 | list = NULL; | |
1735 | } | |
1736 | else | |
1737 | { | |
1738 | /* We're trying to complete on the command which was ambiguous. | |
1739 | This we can deal with. */ | |
1740 | if (result_list) | |
1741 | { | |
1742 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1743 | word); | |
1744 | } | |
1745 | else | |
1746 | { | |
1747 | list = complete_on_cmdlist (cmdlist, p, word); | |
1748 | } | |
1749 | /* Insure that readline does the right thing with respect to | |
1750 | inserting quotes. */ | |
1751 | rl_completer_word_break_characters = | |
1752 | gdb_completer_command_word_break_characters; | |
1753 | } | |
1754 | } | |
1755 | else | |
1756 | { | |
1757 | /* We've recognized a full command. */ | |
1758 | ||
9ed8604f | 1759 | if (p == tmp_command + point) |
172559ec JK |
1760 | { |
1761 | /* There is no non-whitespace in the line beyond the command. */ | |
1762 | ||
1763 | if (p[-1] == ' ' || p[-1] == '\t') | |
1764 | { | |
1765 | /* The command is followed by whitespace; we need to complete | |
1766 | on whatever comes after command. */ | |
1767 | if (c->prefixlist) | |
1768 | { | |
1769 | /* It is a prefix command; what comes after it is | |
1770 | a subcommand (e.g. "info "). */ | |
1771 | list = complete_on_cmdlist (*c->prefixlist, p, word); | |
1772 | ||
1773 | /* Insure that readline does the right thing | |
1774 | with respect to inserting quotes. */ | |
1775 | rl_completer_word_break_characters = | |
1776 | gdb_completer_command_word_break_characters; | |
1777 | } | |
09374c98 SG |
1778 | else if (c->enums) |
1779 | { | |
1780 | list = complete_on_enum (c->enums, p, word); | |
1781 | rl_completer_word_break_characters = | |
1782 | gdb_completer_command_word_break_characters; | |
1783 | } | |
172559ec JK |
1784 | else |
1785 | { | |
1786 | /* It is a normal command; what comes after it is | |
1787 | completed by the command's completer function. */ | |
1788 | list = (*c->completer) (p, word); | |
1789 | } | |
1790 | } | |
1791 | else | |
1792 | { | |
1793 | /* The command is not followed by whitespace; we need to | |
1794 | complete on the command itself. e.g. "p" which is a | |
1795 | command itself but also can complete to "print", "ptype" | |
1796 | etc. */ | |
1797 | char *q; | |
1798 | ||
1799 | /* Find the command we are completing on. */ | |
1800 | q = p; | |
1801 | while (q > tmp_command) | |
1802 | { | |
1803 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1804 | --q; | |
1805 | else | |
1806 | break; | |
1807 | } | |
1808 | ||
1809 | list = complete_on_cmdlist (result_list, q, word); | |
1810 | ||
1811 | /* Insure that readline does the right thing | |
1812 | with respect to inserting quotes. */ | |
1813 | rl_completer_word_break_characters = | |
1814 | gdb_completer_command_word_break_characters; | |
1815 | } | |
1816 | } | |
1817 | else | |
1818 | { | |
1819 | /* There is non-whitespace beyond the command. */ | |
1820 | ||
1821 | if (c->prefixlist && !c->allow_unknown) | |
1822 | { | |
1823 | /* It is an unrecognized subcommand of a prefix command, | |
1824 | e.g. "info adsfkdj". */ | |
1825 | list = NULL; | |
1826 | } | |
09374c98 SG |
1827 | else if (c->enums) |
1828 | { | |
1829 | list = complete_on_enum (c->enums, p, word); | |
1830 | } | |
172559ec JK |
1831 | else |
1832 | { | |
1833 | /* It is a normal command. */ | |
1834 | list = (*c->completer) (p, word); | |
1835 | } | |
1836 | } | |
1837 | } | |
1838 | } | |
1839 | ||
1840 | /* If we found a list of potential completions during initialization then | |
1841 | dole them out one at a time. The vector of completions is NULL | |
1842 | terminated, so after returning the last one, return NULL (and continue | |
1843 | to do so) each time we are called after that, until a new list is | |
1844 | available. */ | |
1845 | ||
1846 | if (list) | |
1847 | { | |
1848 | output = list[index]; | |
1849 | if (output) | |
1850 | { | |
1851 | index++; | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | #if 0 | |
1856 | /* Can't do this because readline hasn't yet checked the word breaks | |
1857 | for figuring out whether to insert a quote. */ | |
1858 | if (output == NULL) | |
1859 | /* Make sure the word break characters are set back to normal for the | |
1860 | next time that readline tries to complete something. */ | |
1861 | rl_completer_word_break_characters = | |
1862 | gdb_completer_word_break_characters; | |
1863 | #endif | |
1864 | ||
1865 | return (output); | |
1866 | } | |
1867 | ||
9ed8604f PS |
1868 | /* Line completion interface function for readline. */ |
1869 | ||
1870 | static char * | |
1871 | readline_line_completion_function (text, matches) | |
1872 | char *text; | |
1873 | int matches; | |
1874 | { | |
1875 | return line_completion_function (text, matches, rl_line_buffer, rl_point); | |
1876 | } | |
1877 | ||
172559ec JK |
1878 | /* Skip over a possibly quoted word (as defined by the quote characters |
1879 | and word break characters the completer uses). Returns pointer to the | |
1880 | location after the "word". */ | |
1881 | ||
1882 | char * | |
1883 | skip_quoted (str) | |
1884 | char *str; | |
1885 | { | |
1886 | char quote_char = '\0'; | |
1887 | char *scan; | |
1888 | ||
1889 | for (scan = str; *scan != '\0'; scan++) | |
1890 | { | |
1891 | if (quote_char != '\0') | |
1892 | { | |
1893 | /* Ignore everything until the matching close quote char */ | |
1894 | if (*scan == quote_char) | |
1895 | { | |
1896 | /* Found matching close quote. */ | |
1897 | scan++; | |
1898 | break; | |
1899 | } | |
1900 | } | |
1901 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1902 | { | |
1903 | /* Found start of a quoted string. */ | |
1904 | quote_char = *scan; | |
1905 | } | |
1906 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1907 | { | |
1908 | break; | |
1909 | } | |
1910 | } | |
1911 | return (scan); | |
1912 | } | |
1913 | ||
1914 | \f | |
1915 | #ifdef STOP_SIGNAL | |
1916 | static void | |
1917 | stop_sig (signo) | |
1918 | int signo; | |
1919 | { | |
1920 | #if STOP_SIGNAL == SIGTSTP | |
1921 | signal (SIGTSTP, SIG_DFL); | |
1922 | sigsetmask (0); | |
1923 | kill (getpid (), SIGTSTP); | |
1924 | signal (SIGTSTP, stop_sig); | |
1925 | #else | |
1926 | signal (STOP_SIGNAL, stop_sig); | |
1927 | #endif | |
1928 | printf_unfiltered ("%s", prompt); | |
1929 | gdb_flush (gdb_stdout); | |
1930 | ||
1931 | /* Forget about any previous command -- null line now will do nothing. */ | |
1932 | dont_repeat (); | |
1933 | } | |
1934 | #endif /* STOP_SIGNAL */ | |
1935 | ||
1936 | /* Initialize signal handlers. */ | |
1937 | static void | |
1938 | do_nothing (signo) | |
1939 | int signo; | |
1940 | { | |
8d743926 JM |
1941 | /* Under System V the default disposition of a signal is reinstated after |
1942 | the signal is caught and delivered to an application process. On such | |
1943 | systems one must restore the replacement signal handler if one wishes | |
1944 | to continue handling the signal in one's program. On BSD systems this | |
1945 | is not needed but it is harmless, and it simplifies the code to just do | |
1946 | it unconditionally. */ | |
1947 | signal (signo, do_nothing); | |
172559ec JK |
1948 | } |
1949 | ||
1950 | static void | |
1951 | init_signals () | |
1952 | { | |
1953 | signal (SIGINT, request_quit); | |
1954 | ||
255181a9 PS |
1955 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed |
1956 | to the inferior and breakpoints will be ignored. */ | |
1957 | #ifdef SIGTRAP | |
1958 | signal (SIGTRAP, SIG_DFL); | |
1959 | #endif | |
1960 | ||
172559ec JK |
1961 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get |
1962 | passed to the inferior, which we don't want. It would be | |
1963 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
1964 | on BSD4.3 systems using vfork, that can affect the | |
1965 | GDB process as well as the inferior (the signal handling tables | |
1966 | might be in memory, shared between the two). Since we establish | |
1967 | a handler for SIGQUIT, when we call exec it will set the signal | |
1968 | to SIG_DFL for us. */ | |
1969 | signal (SIGQUIT, do_nothing); | |
4ce7ba51 | 1970 | #ifdef SIGHUP |
172559ec JK |
1971 | if (signal (SIGHUP, do_nothing) != SIG_IGN) |
1972 | signal (SIGHUP, disconnect); | |
4ce7ba51 | 1973 | #endif |
172559ec JK |
1974 | signal (SIGFPE, float_handler); |
1975 | ||
1976 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1977 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1978 | #endif | |
1979 | } | |
1980 | \f | |
1981 | /* Read one line from the command input stream `instream' | |
1982 | into the local static buffer `linebuffer' (whose current length | |
1983 | is `linelength'). | |
1984 | The buffer is made bigger as necessary. | |
1985 | Returns the address of the start of the line. | |
1986 | ||
1987 | NULL is returned for end of file. | |
1988 | ||
1989 | *If* the instream == stdin & stdin is a terminal, the line read | |
1990 | is copied into the file line saver (global var char *line, | |
1991 | length linesize) so that it can be duplicated. | |
1992 | ||
1993 | This routine either uses fancy command line editing or | |
1994 | simple input as the user has requested. */ | |
1995 | ||
1996 | char * | |
1997 | command_line_input (prrompt, repeat, annotation_suffix) | |
1998 | char *prrompt; | |
1999 | int repeat; | |
2000 | char *annotation_suffix; | |
2001 | { | |
2002 | static char *linebuffer = 0; | |
2003 | static unsigned linelength = 0; | |
2004 | register char *p; | |
2005 | char *p1; | |
2006 | char *rl; | |
2007 | char *local_prompt = prrompt; | |
172559ec JK |
2008 | char *nline; |
2009 | char got_eof = 0; | |
2010 | ||
dfb14bc8 SS |
2011 | /* The annotation suffix must be non-NULL. */ |
2012 | if (annotation_suffix == NULL) | |
2013 | annotation_suffix = ""; | |
2014 | ||
172559ec JK |
2015 | if (annotation_level > 1 && instream == stdin) |
2016 | { | |
2017 | local_prompt = alloca ((prrompt == NULL ? 0 : strlen (prrompt)) | |
2018 | + strlen (annotation_suffix) + 40); | |
2019 | if (prrompt == NULL) | |
2020 | local_prompt[0] = '\0'; | |
2021 | else | |
2022 | strcpy (local_prompt, prrompt); | |
2023 | strcat (local_prompt, "\n\032\032"); | |
2024 | strcat (local_prompt, annotation_suffix); | |
2025 | strcat (local_prompt, "\n"); | |
2026 | } | |
2027 | ||
2028 | if (linebuffer == 0) | |
2029 | { | |
2030 | linelength = 80; | |
2031 | linebuffer = (char *) xmalloc (linelength); | |
2032 | } | |
2033 | ||
2034 | p = linebuffer; | |
2035 | ||
2036 | /* Control-C quits instantly if typed while in this loop | |
2037 | since it should not wait until the user types a newline. */ | |
2038 | immediate_quit++; | |
2039 | #ifdef STOP_SIGNAL | |
2040 | if (job_control) | |
2041 | signal (STOP_SIGNAL, stop_sig); | |
2042 | #endif | |
2043 | ||
2044 | while (1) | |
2045 | { | |
2046 | /* Make sure that all output has been output. Some machines may let | |
2047 | you get away with leaving out some of the gdb_flush, but not all. */ | |
2048 | wrap_here (""); | |
2049 | gdb_flush (gdb_stdout); | |
2050 | gdb_flush (gdb_stderr); | |
2051 | ||
2052 | if (source_file_name != NULL) | |
2053 | { | |
2054 | ++source_line_number; | |
2055 | sprintf (source_error, | |
2056 | "%s%s:%d: Error in sourced command file:\n", | |
2057 | source_pre_error, | |
2058 | source_file_name, | |
2059 | source_line_number); | |
2060 | error_pre_print = source_error; | |
2061 | } | |
2062 | ||
2063 | if (annotation_level > 1 && instream == stdin) | |
2064 | { | |
2065 | printf_unfiltered ("\n\032\032pre-"); | |
2066 | printf_unfiltered (annotation_suffix); | |
2067 | printf_unfiltered ("\n"); | |
2068 | } | |
2069 | ||
2070 | /* Don't use fancy stuff if not talking to stdin. */ | |
41756e56 FF |
2071 | if (readline_hook && instream == NULL) |
2072 | { | |
2073 | rl = (*readline_hook) (local_prompt); | |
2074 | } | |
2075 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
2076 | { | |
2077 | rl = readline (local_prompt); | |
2078 | } | |
172559ec | 2079 | else |
41756e56 FF |
2080 | { |
2081 | rl = gdb_readline (local_prompt); | |
2082 | } | |
172559ec JK |
2083 | |
2084 | if (annotation_level > 1 && instream == stdin) | |
2085 | { | |
2086 | printf_unfiltered ("\n\032\032post-"); | |
2087 | printf_unfiltered (annotation_suffix); | |
2088 | printf_unfiltered ("\n"); | |
2089 | } | |
2090 | ||
2091 | if (!rl || rl == (char *) EOF) | |
2092 | { | |
2093 | got_eof = 1; | |
2094 | break; | |
2095 | } | |
2096 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
2097 | { | |
2098 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
2099 | nline = (char *) xrealloc (linebuffer, linelength); | |
2100 | p += nline - linebuffer; | |
2101 | linebuffer = nline; | |
2102 | } | |
2103 | p1 = rl; | |
2104 | /* Copy line. Don't copy null at end. (Leaves line alone | |
2105 | if this was just a newline) */ | |
2106 | while (*p1) | |
2107 | *p++ = *p1++; | |
2108 | ||
2109 | free (rl); /* Allocated in readline. */ | |
2110 | ||
2111 | if (p == linebuffer || *(p - 1) != '\\') | |
2112 | break; | |
2113 | ||
2114 | p--; /* Put on top of '\'. */ | |
2115 | local_prompt = (char *) 0; | |
2116 | } | |
2117 | ||
2118 | #ifdef STOP_SIGNAL | |
2119 | if (job_control) | |
2120 | signal (STOP_SIGNAL, SIG_DFL); | |
2121 | #endif | |
2122 | immediate_quit--; | |
2123 | ||
2124 | if (got_eof) | |
2125 | return NULL; | |
2126 | ||
2127 | #define SERVER_COMMAND_LENGTH 7 | |
2128 | server_command = | |
2129 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
2130 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); | |
2131 | if (server_command) | |
2132 | { | |
2133 | /* Note that we don't set `line'. Between this and the check in | |
2134 | dont_repeat, this insures that repeating will still do the | |
2135 | right thing. */ | |
2136 | *p = '\0'; | |
2137 | return linebuffer + SERVER_COMMAND_LENGTH; | |
2138 | } | |
2139 | ||
2140 | /* Do history expansion if that is wished. */ | |
2141 | if (history_expansion_p && instream == stdin | |
2142 | && ISATTY (instream)) | |
2143 | { | |
2144 | char *history_value; | |
2145 | int expanded; | |
2146 | ||
2147 | *p = '\0'; /* Insert null now. */ | |
2148 | expanded = history_expand (linebuffer, &history_value); | |
2149 | if (expanded) | |
2150 | { | |
2151 | /* Print the changes. */ | |
2152 | printf_unfiltered ("%s\n", history_value); | |
2153 | ||
2154 | /* If there was an error, call this function again. */ | |
2155 | if (expanded < 0) | |
2156 | { | |
2157 | free (history_value); | |
2158 | return command_line_input (prrompt, repeat, annotation_suffix); | |
2159 | } | |
2160 | if (strlen (history_value) > linelength) | |
2161 | { | |
2162 | linelength = strlen (history_value) + 1; | |
2163 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
2164 | } | |
2165 | strcpy (linebuffer, history_value); | |
2166 | p = linebuffer + strlen(linebuffer); | |
2167 | free (history_value); | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | /* If we just got an empty line, and that is supposed | |
2172 | to repeat the previous command, return the value in the | |
2173 | global buffer. */ | |
f2ed3a80 PB |
2174 | if (repeat && p == linebuffer) |
2175 | return line; | |
2176 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++) ; | |
2177 | if (repeat && !*p1) | |
2178 | return line; | |
172559ec JK |
2179 | |
2180 | *p = 0; | |
2181 | ||
2182 | /* Add line to history if appropriate. */ | |
2183 | if (instream == stdin | |
2184 | && ISATTY (stdin) && *linebuffer) | |
2185 | add_history (linebuffer); | |
2186 | ||
2187 | /* Note: lines consisting solely of comments are added to the command | |
2188 | history. This is useful when you type a command, and then | |
2189 | realize you don't want to execute it quite yet. You can comment | |
2190 | out the command and then later fetch it from the value history | |
2191 | and remove the '#'. The kill ring is probably better, but some | |
2192 | people are in the habit of commenting things out. */ | |
f2ed3a80 PB |
2193 | if (*p1 == '#') |
2194 | *p1 = '\0'; /* Found a comment. */ | |
172559ec JK |
2195 | |
2196 | /* Save into global buffer if appropriate. */ | |
2197 | if (repeat) | |
2198 | { | |
2199 | if (linelength > linesize) | |
2200 | { | |
2201 | line = xrealloc (line, linelength); | |
2202 | linesize = linelength; | |
2203 | } | |
2204 | strcpy (line, linebuffer); | |
2205 | return line; | |
2206 | } | |
2207 | ||
2208 | return linebuffer; | |
2209 | } | |
2210 | \f | |
e52bfe0c JL |
2211 | |
2212 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
2213 | code bodies. This is typically used when we encounter an "else" | |
2214 | clause for an "if" command. */ | |
2215 | ||
2216 | static void | |
2217 | realloc_body_list (command, new_length) | |
2218 | struct command_line *command; | |
2219 | int new_length; | |
2220 | { | |
2221 | int n; | |
2222 | struct command_line **body_list; | |
2223 | ||
2224 | n = command->body_count; | |
2225 | ||
2226 | /* Nothing to do? */ | |
2227 | if (new_length <= n) | |
2228 | return; | |
2229 | ||
2230 | body_list = (struct command_line **) | |
2231 | xmalloc (sizeof (struct command_line *) * new_length); | |
2232 | ||
2233 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
2234 | ||
2235 | free (command->body_list); | |
2236 | command->body_list = body_list; | |
2237 | command->body_count = new_length; | |
2238 | } | |
2239 | ||
2240 | /* Read one line from the input stream. If the command is an "else" or | |
2241 | "end", return such an indication to the caller. */ | |
2242 | ||
2243 | static enum misc_command_type | |
2244 | read_next_line (command) | |
2245 | struct command_line **command; | |
2246 | { | |
2247 | char *p, *p1, *prompt_ptr, control_prompt[256]; | |
2248 | int i = 0; | |
2249 | ||
2250 | if (control_level >= 254) | |
2251 | error ("Control nesting too deep!\n"); | |
2252 | ||
2253 | /* Set a prompt based on the nesting of the control commands. */ | |
41756e56 | 2254 | if (instream == stdin || (instream == 0 && readline_hook != NULL)) |
e52bfe0c JL |
2255 | { |
2256 | for (i = 0; i < control_level; i++) | |
2257 | control_prompt[i] = ' '; | |
2258 | control_prompt[i] = '>'; | |
2259 | control_prompt[i+1] = '\0'; | |
2260 | prompt_ptr = (char *)&control_prompt[0]; | |
2261 | } | |
2262 | else | |
2263 | prompt_ptr = NULL; | |
2264 | ||
e04f8901 | 2265 | p = command_line_input (prompt_ptr, instream == stdin, "commands"); |
e52bfe0c JL |
2266 | |
2267 | /* Not sure what to do here. */ | |
2268 | if (p == NULL) | |
2269 | return end_command; | |
2270 | ||
2271 | /* Strip leading and trailing whitespace. */ | |
2272 | while (*p == ' ' || *p == '\t') | |
2273 | p++; | |
2274 | ||
2275 | p1 = p + strlen (p); | |
2276 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) | |
2277 | p1--; | |
2278 | ||
2279 | /* Blanks and comments don't really do anything, but we need to | |
2280 | distinguish them from else, end and other commands which can be | |
2281 | executed. */ | |
2282 | if (p1 == p || p[0] == '#') | |
2283 | return nop_command; | |
2284 | ||
2285 | /* Is this the end of a simple, while, or if control structure? */ | |
2286 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
2287 | return end_command; | |
2288 | ||
2289 | /* Is the else clause of an if control structure? */ | |
2290 | if (p1 - p == 4 && !strncmp (p, "else", 4)) | |
2291 | return else_command; | |
2292 | ||
2293 | /* Check for while, if, break, continue, etc and build a new command | |
2294 | line structure for them. */ | |
2295 | if (p1 - p > 5 && !strncmp (p, "while", 5)) | |
2296 | *command = build_command_line (while_control, p + 6); | |
2297 | else if (p1 - p > 2 && !strncmp (p, "if", 2)) | |
2298 | *command = build_command_line (if_control, p + 3); | |
ecebd693 | 2299 | else if (p1 - p == 10 && !strncmp (p, "loop_break", 10)) |
e52bfe0c JL |
2300 | { |
2301 | *command = (struct command_line *) | |
2302 | xmalloc (sizeof (struct command_line)); | |
2303 | (*command)->next = NULL; | |
2304 | (*command)->line = NULL; | |
2305 | (*command)->control_type = break_control; | |
2306 | (*command)->body_count = 0; | |
2307 | (*command)->body_list = NULL; | |
2308 | } | |
ecebd693 | 2309 | else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13)) |
e52bfe0c JL |
2310 | { |
2311 | *command = (struct command_line *) | |
2312 | xmalloc (sizeof (struct command_line)); | |
2313 | (*command)->next = NULL; | |
2314 | (*command)->line = NULL; | |
2315 | (*command)->control_type = continue_control; | |
2316 | (*command)->body_count = 0; | |
2317 | (*command)->body_list = NULL; | |
2318 | } | |
2319 | else | |
2320 | { | |
2321 | /* A normal command. */ | |
2322 | *command = (struct command_line *) | |
2323 | xmalloc (sizeof (struct command_line)); | |
2324 | (*command)->next = NULL; | |
2325 | (*command)->line = savestring (p, p1 - p); | |
2326 | (*command)->control_type = simple_control; | |
2327 | (*command)->body_count = 0; | |
2328 | (*command)->body_list = NULL; | |
2329 | } | |
2330 | ||
2331 | /* Nothing special. */ | |
2332 | return ok_command; | |
2333 | } | |
2334 | ||
2335 | /* Recursively read in the control structures and create a command_line | |
41756e56 | 2336 | structure from them. |
e52bfe0c JL |
2337 | |
2338 | The parent_control parameter is the control structure in which the | |
2339 | following commands are nested. */ | |
2340 | ||
2341 | static enum command_control_type | |
2342 | recurse_read_control_structure (current_cmd) | |
2343 | struct command_line *current_cmd; | |
2344 | { | |
2345 | int current_body, i; | |
2346 | enum misc_command_type val; | |
2347 | enum command_control_type ret; | |
2348 | struct command_line **body_ptr, *child_tail, *next; | |
e52bfe0c | 2349 | |
e52bfe0c JL |
2350 | child_tail = NULL; |
2351 | current_body = 1; | |
2352 | ||
2353 | /* Sanity checks. */ | |
2354 | if (current_cmd->control_type == simple_control) | |
2355 | { | |
2356 | error ("Recursed on a simple control type\n"); | |
2357 | return invalid_control; | |
2358 | } | |
2359 | ||
2360 | if (current_body > current_cmd->body_count) | |
2361 | { | |
2362 | error ("Allocated body is smaller than this command type needs\n"); | |
2363 | return invalid_control; | |
2364 | } | |
2365 | ||
2366 | /* Read lines from the input stream and build control structures. */ | |
2367 | while (1) | |
2368 | { | |
2369 | dont_repeat (); | |
2370 | ||
2371 | next = NULL; | |
2372 | val = read_next_line (&next); | |
2373 | ||
2374 | /* Just skip blanks and comments. */ | |
2375 | if (val == nop_command) | |
2376 | continue; | |
2377 | ||
2378 | if (val == end_command) | |
2379 | { | |
2380 | if (current_cmd->control_type == while_control | |
2381 | || current_cmd->control_type == if_control) | |
2382 | { | |
2383 | /* Success reading an entire control structure. */ | |
2384 | ret = simple_control; | |
2385 | break; | |
2386 | } | |
2387 | else | |
2388 | { | |
2389 | ret = invalid_control; | |
2390 | break; | |
2391 | } | |
2392 | } | |
2393 | ||
2394 | /* Not the end of a control structure. */ | |
2395 | if (val == else_command) | |
2396 | { | |
2397 | if (current_cmd->control_type == if_control | |
2398 | && current_body == 1) | |
2399 | { | |
2400 | realloc_body_list (current_cmd, 2); | |
2401 | current_body = 2; | |
2402 | child_tail = NULL; | |
2403 | continue; | |
2404 | } | |
2405 | else | |
2406 | { | |
2407 | ret = invalid_control; | |
2408 | break; | |
2409 | } | |
2410 | } | |
2411 | ||
2412 | if (child_tail) | |
2413 | { | |
2414 | child_tail->next = next; | |
2415 | } | |
2416 | else | |
2417 | { | |
e52bfe0c JL |
2418 | body_ptr = current_cmd->body_list; |
2419 | for (i = 1; i < current_body; i++) | |
2420 | body_ptr++; | |
2421 | ||
2422 | *body_ptr = next; | |
2423 | ||
e52bfe0c JL |
2424 | } |
2425 | ||
2426 | child_tail = next; | |
2427 | ||
2428 | /* If the latest line is another control structure, then recurse | |
2429 | on it. */ | |
2430 | if (next->control_type == while_control | |
2431 | || next->control_type == if_control) | |
2432 | { | |
2433 | control_level++; | |
2434 | ret = recurse_read_control_structure (next); | |
2435 | control_level--; | |
2436 | ||
2437 | if (ret != simple_control) | |
2438 | break; | |
2439 | } | |
2440 | } | |
2441 | ||
2442 | dont_repeat (); | |
e52bfe0c JL |
2443 | |
2444 | return ret; | |
2445 | } | |
2446 | ||
41756e56 FF |
2447 | /* Read lines from the input stream and accumulate them in a chain of |
2448 | struct command_line's, which is then returned. For input from a | |
2449 | terminal, the special command "end" is used to mark the end of the | |
2450 | input, and is not included in the returned chain of commands. */ | |
e52bfe0c | 2451 | |
41756e56 | 2452 | #define END_MESSAGE "End with a line saying just \"end\"." |
172559ec JK |
2453 | |
2454 | struct command_line * | |
41756e56 FF |
2455 | read_command_lines (prompt, from_tty) |
2456 | char *prompt; | |
2457 | int from_tty; | |
172559ec | 2458 | { |
e52bfe0c JL |
2459 | struct command_line *head, *tail, *next; |
2460 | struct cleanup *old_chain; | |
2461 | enum command_control_type ret; | |
2462 | enum misc_command_type val; | |
2463 | ||
41756e56 FF |
2464 | if (readline_begin_hook) |
2465 | { | |
2466 | /* Note - intentional to merge messages with no newline */ | |
2467 | (*readline_begin_hook) ("%s %s\n", prompt, END_MESSAGE); | |
2468 | } | |
2469 | else if (from_tty && input_from_terminal_p ()) | |
2470 | { | |
2471 | printf_unfiltered ("%s\n%s\n", prompt, END_MESSAGE); | |
2472 | gdb_flush (gdb_stdout); | |
2473 | } | |
2474 | ||
e52bfe0c JL |
2475 | head = tail = NULL; |
2476 | old_chain = NULL; | |
172559ec JK |
2477 | |
2478 | while (1) | |
2479 | { | |
e52bfe0c | 2480 | val = read_next_line (&next); |
172559ec | 2481 | |
e52bfe0c JL |
2482 | /* Ignore blank lines or comments. */ |
2483 | if (val == nop_command) | |
2484 | continue; | |
2485 | ||
2486 | if (val == end_command) | |
2487 | { | |
2488 | ret = simple_control; | |
2489 | break; | |
2490 | } | |
2491 | ||
2492 | if (val != ok_command) | |
2493 | { | |
2494 | ret = invalid_control; | |
2495 | break; | |
2496 | } | |
2497 | ||
2498 | if (next->control_type == while_control | |
2499 | || next->control_type == if_control) | |
2500 | { | |
2501 | control_level++; | |
2502 | ret = recurse_read_control_structure (next); | |
2503 | control_level--; | |
172559ec | 2504 | |
e52bfe0c JL |
2505 | if (ret == invalid_control) |
2506 | break; | |
2507 | } | |
2508 | ||
172559ec JK |
2509 | if (tail) |
2510 | { | |
2511 | tail->next = next; | |
2512 | } | |
2513 | else | |
2514 | { | |
e52bfe0c | 2515 | head = next; |
ad3b8c4a JM |
2516 | old_chain = make_cleanup ((make_cleanup_func) free_command_lines, |
2517 | &head); | |
172559ec JK |
2518 | } |
2519 | tail = next; | |
2520 | } | |
2521 | ||
2522 | dont_repeat (); | |
2523 | ||
e52bfe0c JL |
2524 | if (head) |
2525 | { | |
2526 | if (ret != invalid_control) | |
2527 | { | |
2528 | discard_cleanups (old_chain); | |
e52bfe0c JL |
2529 | } |
2530 | else | |
2531 | do_cleanups (old_chain); | |
2532 | } | |
2533 | ||
41756e56 FF |
2534 | if (readline_end_hook) |
2535 | { | |
2536 | (*readline_end_hook) (); | |
2537 | } | |
2538 | return (head); | |
172559ec JK |
2539 | } |
2540 | ||
2541 | /* Free a chain of struct command_line's. */ | |
2542 | ||
2543 | void | |
2544 | free_command_lines (lptr) | |
2545 | struct command_line **lptr; | |
2546 | { | |
2547 | register struct command_line *l = *lptr; | |
2548 | register struct command_line *next; | |
e52bfe0c JL |
2549 | struct command_line **blist; |
2550 | int i; | |
172559ec JK |
2551 | |
2552 | while (l) | |
2553 | { | |
e52bfe0c JL |
2554 | if (l->body_count > 0) |
2555 | { | |
2556 | blist = l->body_list; | |
2557 | for (i = 0; i < l->body_count; i++, blist++) | |
2558 | free_command_lines (blist); | |
2559 | } | |
172559ec JK |
2560 | next = l->next; |
2561 | free (l->line); | |
2562 | free ((PTR)l); | |
2563 | l = next; | |
2564 | } | |
2565 | } | |
2566 | \f | |
2567 | /* Add an element to the list of info subcommands. */ | |
2568 | ||
2569 | void | |
2570 | add_info (name, fun, doc) | |
2571 | char *name; | |
2572 | void (*fun) PARAMS ((char *, int)); | |
2573 | char *doc; | |
2574 | { | |
2575 | add_cmd (name, no_class, fun, doc, &infolist); | |
2576 | } | |
2577 | ||
2578 | /* Add an alias to the list of info subcommands. */ | |
2579 | ||
2580 | void | |
2581 | add_info_alias (name, oldname, abbrev_flag) | |
2582 | char *name; | |
2583 | char *oldname; | |
2584 | int abbrev_flag; | |
2585 | { | |
2586 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
2587 | } | |
2588 | ||
2589 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2590 | Therefore, its own definition is called only for "info" with no args. */ | |
2591 | ||
2592 | /* ARGSUSED */ | |
2593 | static void | |
2594 | info_command (arg, from_tty) | |
2595 | char *arg; | |
2596 | int from_tty; | |
2597 | { | |
2598 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); | |
2599 | help_list (infolist, "info ", -1, gdb_stdout); | |
2600 | } | |
2601 | ||
2602 | /* The "complete" command is used by Emacs to implement completion. */ | |
2603 | ||
2604 | /* ARGSUSED */ | |
2605 | static void | |
2606 | complete_command (arg, from_tty) | |
2607 | char *arg; | |
2608 | int from_tty; | |
2609 | { | |
2610 | int i; | |
9ed8604f | 2611 | int argpoint; |
172559ec JK |
2612 | char *completion; |
2613 | ||
2614 | dont_repeat (); | |
2615 | ||
2616 | if (arg == NULL) | |
9ed8604f PS |
2617 | arg = ""; |
2618 | argpoint = strlen (arg); | |
172559ec | 2619 | |
9ed8604f | 2620 | for (completion = line_completion_function (arg, i = 0, arg, argpoint); |
172559ec | 2621 | completion; |
9ed8604f PS |
2622 | completion = line_completion_function (arg, ++i, arg, argpoint)) |
2623 | { | |
2624 | printf_unfiltered ("%s\n", completion); | |
2625 | free (completion); | |
2626 | } | |
172559ec JK |
2627 | } |
2628 | ||
2629 | /* The "show" command with no arguments shows all the settings. */ | |
2630 | ||
2631 | /* ARGSUSED */ | |
2632 | static void | |
2633 | show_command (arg, from_tty) | |
2634 | char *arg; | |
2635 | int from_tty; | |
2636 | { | |
2637 | cmd_show_list (showlist, from_tty, ""); | |
2638 | } | |
2639 | \f | |
2640 | /* Add an element to the list of commands. */ | |
2641 | ||
2642 | void | |
2643 | add_com (name, class, fun, doc) | |
2644 | char *name; | |
2645 | enum command_class class; | |
2646 | void (*fun) PARAMS ((char *, int)); | |
2647 | char *doc; | |
2648 | { | |
2649 | add_cmd (name, class, fun, doc, &cmdlist); | |
2650 | } | |
2651 | ||
2652 | /* Add an alias or abbreviation command to the list of commands. */ | |
2653 | ||
2654 | void | |
2655 | add_com_alias (name, oldname, class, abbrev_flag) | |
2656 | char *name; | |
2657 | char *oldname; | |
2658 | enum command_class class; | |
2659 | int abbrev_flag; | |
2660 | { | |
2661 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
2662 | } | |
2663 | ||
2664 | void | |
2665 | error_no_arg (why) | |
2666 | char *why; | |
2667 | { | |
2668 | error ("Argument required (%s).", why); | |
2669 | } | |
2670 | ||
2671 | /* ARGSUSED */ | |
2672 | static void | |
2673 | help_command (command, from_tty) | |
2674 | char *command; | |
2675 | int from_tty; /* Ignored */ | |
2676 | { | |
2677 | help_cmd (command, gdb_stdout); | |
2678 | } | |
2679 | \f | |
2680 | static void | |
2681 | validate_comname (comname) | |
2682 | char *comname; | |
2683 | { | |
2684 | register char *p; | |
2685 | ||
2686 | if (comname == 0) | |
2687 | error_no_arg ("name of command to define"); | |
2688 | ||
2689 | p = comname; | |
2690 | while (*p) | |
2691 | { | |
080868b4 | 2692 | if (!isalnum(*p) && *p != '-' && *p != '_') |
172559ec JK |
2693 | error ("Junk in argument list: \"%s\"", p); |
2694 | p++; | |
2695 | } | |
2696 | } | |
2697 | ||
2698 | /* This is just a placeholder in the command data structures. */ | |
2699 | static void | |
2700 | user_defined_command (ignore, from_tty) | |
2701 | char *ignore; | |
2702 | int from_tty; | |
2703 | { | |
2704 | } | |
2705 | ||
2706 | static void | |
2707 | define_command (comname, from_tty) | |
2708 | char *comname; | |
2709 | int from_tty; | |
2710 | { | |
2711 | register struct command_line *cmds; | |
2712 | register struct cmd_list_element *c, *newc, *hookc = 0; | |
2713 | char *tem = comname; | |
41756e56 | 2714 | char tmpbuf[128]; |
172559ec JK |
2715 | #define HOOK_STRING "hook-" |
2716 | #define HOOK_LEN 5 | |
2717 | ||
2718 | validate_comname (comname); | |
2719 | ||
2720 | /* Look it up, and verify that we got an exact match. */ | |
2721 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); | |
2722 | if (c && !STREQ (comname, c->name)) | |
2723 | c = 0; | |
e52bfe0c | 2724 | |
172559ec JK |
2725 | if (c) |
2726 | { | |
2727 | if (c->class == class_user || c->class == class_alias) | |
2728 | tem = "Redefine command \"%s\"? "; | |
2729 | else | |
2730 | tem = "Really redefine built-in command \"%s\"? "; | |
2731 | if (!query (tem, c->name)) | |
2732 | error ("Command \"%s\" not redefined.", c->name); | |
2733 | } | |
2734 | ||
2735 | /* If this new command is a hook, then mark the command which it | |
2736 | is hooking. Note that we allow hooking `help' commands, so that | |
2737 | we can hook the `stop' pseudo-command. */ | |
2738 | ||
2739 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2740 | { | |
2741 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
2742 | tem = comname+HOOK_LEN; | |
2743 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2744 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) | |
2745 | hookc = 0; | |
2746 | if (!hookc) | |
2747 | { | |
2748 | warning ("Your new `%s' command does not hook any existing command.", | |
2749 | comname); | |
e3033bb0 | 2750 | if (!query ("Proceed? ")) |
172559ec JK |
2751 | error ("Not confirmed."); |
2752 | } | |
2753 | } | |
2754 | ||
2755 | comname = savestring (comname, strlen (comname)); | |
2756 | ||
e52bfe0c | 2757 | /* If the rest of the commands will be case insensitive, this one |
172559ec JK |
2758 | should behave in the same manner. */ |
2759 | for (tem = comname; *tem; tem++) | |
2760 | if (isupper(*tem)) *tem = tolower(*tem); | |
2761 | ||
e52bfe0c | 2762 | control_level = 0; |
41756e56 FF |
2763 | sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname); |
2764 | cmds = read_command_lines (tmpbuf, from_tty); | |
172559ec JK |
2765 | |
2766 | if (c && c->class == class_user) | |
2767 | free_command_lines (&c->user_commands); | |
2768 | ||
2769 | newc = add_cmd (comname, class_user, user_defined_command, | |
2770 | (c && c->class == class_user) | |
2771 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
2772 | newc->user_commands = cmds; | |
2773 | ||
2774 | /* If this new command is a hook, then mark both commands as being | |
2775 | tied. */ | |
2776 | if (hookc) | |
2777 | { | |
2778 | hookc->hook = newc; /* Target gets hooked. */ | |
2779 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2780 | } | |
2781 | } | |
2782 | ||
2783 | static void | |
2784 | document_command (comname, from_tty) | |
2785 | char *comname; | |
2786 | int from_tty; | |
2787 | { | |
2788 | struct command_line *doclines; | |
2789 | register struct cmd_list_element *c; | |
2790 | char *tem = comname; | |
41756e56 | 2791 | char tmpbuf[128]; |
172559ec JK |
2792 | |
2793 | validate_comname (comname); | |
2794 | ||
2795 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2796 | ||
2797 | if (c->class != class_user) | |
2798 | error ("Command \"%s\" is built-in.", comname); | |
2799 | ||
41756e56 FF |
2800 | sprintf (tmpbuf, "Type documentation for \"%s\".", comname); |
2801 | doclines = read_command_lines (tmpbuf, from_tty); | |
172559ec JK |
2802 | |
2803 | if (c->doc) free (c->doc); | |
2804 | ||
2805 | { | |
2806 | register struct command_line *cl1; | |
2807 | register int len = 0; | |
2808 | ||
2809 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2810 | len += strlen (cl1->line) + 1; | |
2811 | ||
2812 | c->doc = (char *) xmalloc (len + 1); | |
2813 | *c->doc = 0; | |
2814 | ||
2815 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2816 | { | |
2817 | strcat (c->doc, cl1->line); | |
2818 | if (cl1->next) | |
2819 | strcat (c->doc, "\n"); | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | free_command_lines (&doclines); | |
2824 | } | |
2825 | \f | |
172559ec JK |
2826 | void |
2827 | print_gdb_version (stream) | |
2828 | GDB_FILE *stream; | |
2829 | { | |
50140ab2 FF |
2830 | /* From GNU coding standards, first line is meant to be easy for a |
2831 | program to parse, and is just canonical program name and version | |
2832 | number, which starts after last space. */ | |
2833 | ||
2834 | fprintf_filtered (stream, "GNU gdb %s\n", version); | |
2835 | ||
2836 | /* Second line is a copyright notice. */ | |
2837 | ||
bf9084c0 | 2838 | fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n"); |
50140ab2 FF |
2839 | |
2840 | /* Following the copyright is a brief statement that the program is | |
2841 | free software, that users are free to copy and change it on | |
2842 | certain conditions, that it is covered by the GNU GPL, and that | |
2843 | there is no warranty. */ | |
2844 | ||
172559ec | 2845 | fprintf_filtered (stream, "\ |
50140ab2 FF |
2846 | GDB is free software, covered by the GNU General Public License, and you are\n\ |
2847 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
59ae1b0f SS |
2848 | Type \"show copying\" to see the conditions.\n\ |
2849 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
172559ec | 2850 | |
50140ab2 | 2851 | /* After the required info we print the configuration information. */ |
172559ec | 2852 | |
50140ab2 FF |
2853 | fprintf_filtered (stream, "This GDB was configured as \""); |
2854 | if (!STREQ (host_name, target_name)) | |
2855 | { | |
2856 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
2857 | } | |
2858 | else | |
2859 | { | |
2860 | fprintf_filtered (stream, "%s", host_name); | |
2861 | } | |
2862 | fprintf_filtered (stream, "\"."); | |
172559ec JK |
2863 | } |
2864 | ||
2865 | /* ARGSUSED */ | |
2866 | static void | |
2867 | show_version (args, from_tty) | |
2868 | char *args; | |
2869 | int from_tty; | |
2870 | { | |
2871 | immediate_quit++; | |
172559ec JK |
2872 | print_gdb_version (gdb_stdout); |
2873 | printf_filtered ("\n"); | |
2874 | immediate_quit--; | |
2875 | } | |
2876 | \f | |
2877 | /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb | |
2878 | is obsolete. */ | |
2879 | ||
2880 | void | |
2881 | print_prompt () | |
2882 | { | |
2883 | printf_unfiltered ("%s", prompt); | |
2884 | gdb_flush (gdb_stdout); | |
2885 | } | |
018d76dd KS |
2886 | |
2887 | /* This replaces the above for the frontends: it returns a pointer | |
2888 | to the prompt. */ | |
2889 | char * | |
2890 | get_prompt () | |
2891 | { | |
2892 | return prompt; | |
2893 | } | |
172559ec | 2894 | \f |
018d76dd KS |
2895 | /* If necessary, make the user confirm that we should quit. Return |
2896 | non-zero if we should quit, zero if we shouldn't. */ | |
2897 | ||
2898 | int | |
2899 | quit_confirm () | |
2900 | { | |
2901 | if (inferior_pid != 0 && target_has_execution) | |
2902 | { | |
2903 | char *s; | |
2904 | ||
929db6e5 EZ |
2905 | /* This is something of a hack. But there's no reliable way to |
2906 | see if a GUI is running. The `use_windows' variable doesn't | |
2907 | cut it. */ | |
2908 | if (init_ui_hook) | |
2909 | s = "A debugging session is active.\nDo you still want to close the debugger?"; | |
2910 | else if (attach_flag) | |
018d76dd KS |
2911 | s = "The program is running. Quit anyway (and detach it)? "; |
2912 | else | |
2913 | s = "The program is running. Exit anyway? "; | |
2914 | ||
2915 | if (! query (s)) | |
2916 | return 0; | |
2917 | } | |
2918 | ||
2919 | return 1; | |
2920 | } | |
2921 | ||
2922 | /* Quit without asking for confirmation. */ | |
2923 | ||
172559ec | 2924 | void |
018d76dd | 2925 | quit_force (args, from_tty) |
172559ec JK |
2926 | char *args; |
2927 | int from_tty; | |
2928 | { | |
641c7fdf SS |
2929 | int exit_code = 0; |
2930 | ||
2931 | /* An optional expression may be used to cause gdb to terminate with the | |
2932 | value of that expression. */ | |
2933 | if (args) | |
2934 | { | |
2935 | value_ptr val = parse_and_eval (args); | |
2936 | ||
2937 | exit_code = (int) value_as_long (val); | |
2938 | } | |
2939 | ||
172559ec JK |
2940 | if (inferior_pid != 0 && target_has_execution) |
2941 | { | |
2942 | if (attach_flag) | |
018d76dd | 2943 | target_detach (args, from_tty); |
172559ec | 2944 | else |
018d76dd | 2945 | target_kill (); |
172559ec | 2946 | } |
018d76dd | 2947 | |
172559ec JK |
2948 | /* UDI wants this, to kill the TIP. */ |
2949 | target_close (1); | |
2950 | ||
2951 | /* Save the history information if it is appropriate to do so. */ | |
2952 | if (write_history_p && history_filename) | |
2953 | write_history (history_filename); | |
2954 | ||
16a43bf4 DP |
2955 | do_final_cleanups(ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
2956 | ||
641c7fdf | 2957 | exit (exit_code); |
172559ec JK |
2958 | } |
2959 | ||
018d76dd KS |
2960 | /* Handle the quit command. */ |
2961 | ||
2962 | void | |
2963 | quit_command (args, from_tty) | |
2964 | char *args; | |
2965 | int from_tty; | |
2966 | { | |
2967 | if (! quit_confirm ()) | |
2968 | error ("Not confirmed."); | |
2969 | quit_force (args, from_tty); | |
2970 | } | |
2971 | ||
172559ec JK |
2972 | /* Returns whether GDB is running on a terminal and whether the user |
2973 | desires that questions be asked of them on that terminal. */ | |
2974 | ||
2975 | int | |
2976 | input_from_terminal_p () | |
2977 | { | |
2978 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
2979 | } | |
2980 | \f | |
2981 | /* ARGSUSED */ | |
2982 | static void | |
2983 | pwd_command (args, from_tty) | |
2984 | char *args; | |
2985 | int from_tty; | |
2986 | { | |
2987 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
b7ec5b8d | 2988 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
172559ec | 2989 | |
b7ec5b8d | 2990 | if (!STREQ (gdb_dirbuf, current_directory)) |
172559ec | 2991 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", |
b7ec5b8d | 2992 | current_directory, gdb_dirbuf); |
172559ec JK |
2993 | else |
2994 | printf_unfiltered ("Working directory %s.\n", current_directory); | |
2995 | } | |
2996 | ||
2997 | void | |
2998 | cd_command (dir, from_tty) | |
2999 | char *dir; | |
3000 | int from_tty; | |
3001 | { | |
3002 | int len; | |
3003 | /* Found something other than leading repetitions of "/..". */ | |
3004 | int found_real_path; | |
3005 | char *p; | |
3006 | ||
3007 | /* If the new directory is absolute, repeat is a no-op; if relative, | |
3008 | repeat might be useful but is more likely to be a mistake. */ | |
3009 | dont_repeat (); | |
3010 | ||
3011 | if (dir == 0) | |
3012 | error_no_arg ("new working directory"); | |
3013 | ||
3014 | dir = tilde_expand (dir); | |
3015 | make_cleanup (free, dir); | |
3016 | ||
3017 | if (chdir (dir) < 0) | |
3018 | perror_with_name (dir); | |
3019 | ||
3020 | len = strlen (dir); | |
2e1cc801 SS |
3021 | dir = savestring (dir, len - (len > 1 && SLASH_P(dir[len-1]))); |
3022 | if (ROOTED_P(dir)) | |
172559ec JK |
3023 | current_directory = dir; |
3024 | else | |
3025 | { | |
2e1cc801 | 3026 | if (SLASH_P (current_directory[0]) && current_directory[1] == '\0') |
172559ec JK |
3027 | current_directory = concat (current_directory, dir, NULL); |
3028 | else | |
2e1cc801 | 3029 | current_directory = concat (current_directory, SLASH_STRING, dir, NULL); |
172559ec JK |
3030 | free (dir); |
3031 | } | |
3032 | ||
3033 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
3034 | ||
3035 | found_real_path = 0; | |
3036 | for (p = current_directory; *p;) | |
3037 | { | |
2e1cc801 | 3038 | if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2]))) |
172559ec | 3039 | strcpy (p, p + 2); |
2e1cc801 SS |
3040 | else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.' |
3041 | && (p[3] == 0 || SLASH_P (p[3]))) | |
172559ec JK |
3042 | { |
3043 | if (found_real_path) | |
3044 | { | |
3045 | /* Search backwards for the directory just before the "/.." | |
3046 | and obliterate it and the "/..". */ | |
3047 | char *q = p; | |
2e1cc801 | 3048 | while (q != current_directory && ! SLASH_P (q[-1])) |
172559ec JK |
3049 | --q; |
3050 | ||
3051 | if (q == current_directory) | |
3052 | /* current_directory is | |
3053 | a relative pathname ("can't happen"--leave it alone). */ | |
3054 | ++p; | |
3055 | else | |
3056 | { | |
3057 | strcpy (q - 1, p + 3); | |
3058 | p = q - 1; | |
3059 | } | |
3060 | } | |
3061 | else | |
3062 | /* We are dealing with leading repetitions of "/..", for example | |
3063 | "/../..", which is the Mach super-root. */ | |
3064 | p += 3; | |
3065 | } | |
3066 | else | |
3067 | { | |
3068 | found_real_path = 1; | |
3069 | ++p; | |
3070 | } | |
3071 | } | |
3072 | ||
3073 | forget_cached_source_info (); | |
3074 | ||
3075 | if (from_tty) | |
3076 | pwd_command ((char *) 0, 1); | |
3077 | } | |
3078 | \f | |
3079 | struct source_cleanup_lines_args { | |
3080 | int old_line; | |
3081 | char *old_file; | |
3082 | char *old_pre_error; | |
3083 | char *old_error_pre_print; | |
3084 | }; | |
3085 | ||
3086 | static void | |
3087 | source_cleanup_lines (args) | |
3088 | PTR args; | |
3089 | { | |
3090 | struct source_cleanup_lines_args *p = | |
3091 | (struct source_cleanup_lines_args *)args; | |
3092 | source_line_number = p->old_line; | |
3093 | source_file_name = p->old_file; | |
3094 | source_pre_error = p->old_pre_error; | |
3095 | error_pre_print = p->old_error_pre_print; | |
3096 | } | |
3097 | ||
3098 | /* ARGSUSED */ | |
3099 | void | |
3100 | source_command (args, from_tty) | |
3101 | char *args; | |
3102 | int from_tty; | |
3103 | { | |
3104 | FILE *stream; | |
3105 | struct cleanup *old_cleanups; | |
3106 | char *file = args; | |
3107 | struct source_cleanup_lines_args old_lines; | |
3108 | int needed_length; | |
3109 | ||
3110 | if (file == NULL) | |
3111 | { | |
3112 | error ("source command requires pathname of file to source."); | |
3113 | } | |
3114 | ||
3115 | file = tilde_expand (file); | |
3116 | old_cleanups = make_cleanup (free, file); | |
3117 | ||
3118 | stream = fopen (file, FOPEN_RT); | |
9e77e83d SG |
3119 | if (!stream) |
3120 | if (from_tty) | |
3121 | perror_with_name (file); | |
3122 | else | |
3123 | return; | |
172559ec | 3124 | |
ad3b8c4a | 3125 | make_cleanup ((make_cleanup_func) fclose, stream); |
172559ec JK |
3126 | |
3127 | old_lines.old_line = source_line_number; | |
3128 | old_lines.old_file = source_file_name; | |
3129 | old_lines.old_pre_error = source_pre_error; | |
3130 | old_lines.old_error_pre_print = error_pre_print; | |
3131 | make_cleanup (source_cleanup_lines, &old_lines); | |
3132 | source_line_number = 0; | |
3133 | source_file_name = file; | |
3134 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
3135 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
3136 | make_cleanup (free, source_pre_error); | |
3137 | /* This will get set every time we read a line. So it won't stay "" for | |
3138 | long. */ | |
3139 | error_pre_print = ""; | |
3140 | ||
3141 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
3142 | if (source_error_allocated < needed_length) | |
3143 | { | |
3144 | source_error_allocated *= 2; | |
3145 | if (source_error_allocated < needed_length) | |
3146 | source_error_allocated = needed_length; | |
3147 | if (source_error == NULL) | |
3148 | source_error = xmalloc (source_error_allocated); | |
3149 | else | |
3150 | source_error = xrealloc (source_error, source_error_allocated); | |
3151 | } | |
3152 | ||
3153 | read_command_file (stream); | |
3154 | ||
3155 | do_cleanups (old_cleanups); | |
3156 | } | |
3157 | ||
3158 | /* ARGSUSED */ | |
3159 | static void | |
3160 | echo_command (text, from_tty) | |
3161 | char *text; | |
3162 | int from_tty; | |
3163 | { | |
3164 | char *p = text; | |
3165 | register int c; | |
3166 | ||
3167 | if (text) | |
3168 | while ((c = *p++) != '\0') | |
3169 | { | |
3170 | if (c == '\\') | |
3171 | { | |
3172 | /* \ at end of argument is used after spaces | |
3173 | so they won't be lost. */ | |
3174 | if (*p == 0) | |
3175 | return; | |
3176 | ||
3177 | c = parse_escape (&p); | |
3178 | if (c >= 0) | |
3179 | printf_filtered ("%c", c); | |
3180 | } | |
3181 | else | |
3182 | printf_filtered ("%c", c); | |
3183 | } | |
3184 | ||
3185 | /* Force this output to appear now. */ | |
3186 | wrap_here (""); | |
3187 | gdb_flush (gdb_stdout); | |
3188 | } | |
3189 | ||
cd10c7e3 SG |
3190 | /* ARGSUSED */ |
3191 | static void | |
3192 | dont_repeat_command (ignored, from_tty) | |
3193 | char *ignored; | |
3194 | int from_tty; | |
3195 | { | |
3196 | *line = 0; /* Can't call dont_repeat here because we're not | |
3197 | necessarily reading from stdin. */ | |
3198 | } | |
b8176214 | 3199 | \f |
b8176214 ILT |
3200 | /* Functions to manipulate the endianness of the target. */ |
3201 | ||
95edd7c1 | 3202 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b8176214 ILT |
3203 | #ifndef TARGET_BYTE_ORDER_DEFAULT |
3204 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN | |
3205 | #endif | |
b8176214 | 3206 | int target_byte_order = TARGET_BYTE_ORDER_DEFAULT; |
750b7942 | 3207 | int target_byte_order_auto = 1; |
95edd7c1 AC |
3208 | #else |
3209 | static int target_byte_order_auto = 0; | |
3210 | #endif | |
b83ed019 | 3211 | |
b8176214 ILT |
3212 | /* Called if the user enters ``set endian'' without an argument. */ |
3213 | static void | |
3214 | set_endian (args, from_tty) | |
3215 | char *args; | |
3216 | int from_tty; | |
3217 | { | |
b83ed019 | 3218 | printf_unfiltered ("\"set endian\" must be followed by \"auto\", \"big\" or \"little\".\n"); |
b8176214 ILT |
3219 | show_endian (args, from_tty); |
3220 | } | |
3221 | ||
3222 | /* Called by ``set endian big''. */ | |
3223 | static void | |
3224 | set_endian_big (args, from_tty) | |
3225 | char *args; | |
3226 | int from_tty; | |
3227 | { | |
95edd7c1 | 3228 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b8176214 | 3229 | target_byte_order = BIG_ENDIAN; |
b83ed019 | 3230 | target_byte_order_auto = 0; |
95edd7c1 AC |
3231 | #else |
3232 | printf_unfiltered ("Byte order is not selectable."); | |
3233 | show_endian (args, from_tty); | |
3234 | #endif | |
b8176214 ILT |
3235 | } |
3236 | ||
3237 | /* Called by ``set endian little''. */ | |
3238 | static void | |
3239 | set_endian_little (args, from_tty) | |
3240 | char *args; | |
3241 | int from_tty; | |
3242 | { | |
95edd7c1 | 3243 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b8176214 | 3244 | target_byte_order = LITTLE_ENDIAN; |
b83ed019 | 3245 | target_byte_order_auto = 0; |
95edd7c1 AC |
3246 | #else |
3247 | printf_unfiltered ("Byte order is not selectable."); | |
3248 | show_endian (args, from_tty); | |
3249 | #endif | |
b83ed019 ILT |
3250 | } |
3251 | ||
3252 | /* Called by ``set endian auto''. */ | |
3253 | static void | |
3254 | set_endian_auto (args, from_tty) | |
3255 | char *args; | |
3256 | int from_tty; | |
3257 | { | |
95edd7c1 | 3258 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b83ed019 | 3259 | target_byte_order_auto = 1; |
95edd7c1 AC |
3260 | #else |
3261 | printf_unfiltered ("Byte order is not selectable."); | |
3262 | show_endian (args, from_tty); | |
3263 | #endif | |
b8176214 ILT |
3264 | } |
3265 | ||
3266 | /* Called by ``show endian''. */ | |
3267 | static void | |
3268 | show_endian (args, from_tty) | |
3269 | char *args; | |
3270 | int from_tty; | |
3271 | { | |
b83ed019 ILT |
3272 | const char *msg = |
3273 | (target_byte_order_auto | |
3274 | ? "The target endianness is set automatically (currently %s endian)\n" | |
3275 | : "The target is assumed to be %s endian\n"); | |
032f80d8 | 3276 | printf_unfiltered ((char *) msg, TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); |
b8176214 ILT |
3277 | } |
3278 | ||
b83ed019 ILT |
3279 | /* Set the endianness from a BFD. */ |
3280 | void | |
3281 | set_endian_from_file (abfd) | |
3282 | bfd *abfd; | |
3283 | { | |
3284 | #ifdef TARGET_BYTE_ORDER_SELECTABLE | |
3285 | int want; | |
3286 | ||
3ecd62ca | 3287 | if (bfd_big_endian (abfd)) |
b83ed019 ILT |
3288 | want = BIG_ENDIAN; |
3289 | else | |
3290 | want = LITTLE_ENDIAN; | |
3291 | if (target_byte_order_auto) | |
3292 | target_byte_order = want; | |
3293 | else if (target_byte_order != want) | |
3294 | warning ("%s endian file does not match %s endian target.", | |
3295 | want == BIG_ENDIAN ? "big" : "little", | |
3296 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
3297 | ||
3298 | #else /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */ | |
3299 | ||
3ecd62ca | 3300 | if (bfd_big_endian (abfd) |
b83ed019 ILT |
3301 | ? TARGET_BYTE_ORDER != BIG_ENDIAN |
3302 | : TARGET_BYTE_ORDER == BIG_ENDIAN) | |
3303 | warning ("%s endian file does not match %s endian target.", | |
3ecd62ca | 3304 | bfd_big_endian (abfd) ? "big" : "little", |
b83ed019 ILT |
3305 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); |
3306 | ||
3307 | #endif /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */ | |
3308 | } | |
172559ec | 3309 | \f |
d0aba53f AC |
3310 | /* Functions to manipulate the architecture of the target */ |
3311 | ||
3312 | int target_architecture_auto = 1; | |
3313 | extern const bfd_arch_info_type bfd_default_arch_struct; | |
3314 | const bfd_arch_info_type *target_architecture = &bfd_default_arch_struct; | |
3315 | int (*target_architecture_hook) PARAMS ((const bfd_arch_info_type *ap)); | |
3316 | ||
ee36741e AC |
3317 | static void |
3318 | set_arch (arch) | |
3319 | const bfd_arch_info_type *arch; | |
3320 | { | |
3321 | /* FIXME: Is it compatible with gdb? */ | |
3322 | /* Check with the target on the setting */ | |
3323 | if (target_architecture_hook != NULL | |
3324 | && !target_architecture_hook (arch)) | |
3325 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
3326 | arch->printable_name); | |
3327 | else | |
3328 | { | |
3329 | target_architecture_auto = 0; | |
3330 | target_architecture = arch; | |
3331 | } | |
3332 | } | |
3333 | ||
3334 | ||
3335 | /* Called if the user enters ``set architecture'' with or without an | |
3336 | argument. */ | |
3337 | static void | |
d0aba53f AC |
3338 | set_architecture (args, from_tty) |
3339 | char *args; | |
3340 | int from_tty; | |
3341 | { | |
3342 | if (args == NULL) | |
3343 | { | |
3344 | printf_unfiltered ("\"set architecture\" must be followed by \"auto\" or an architecture name.\n"); | |
3345 | } | |
3346 | else if (strcmp (args, "auto") == 0) | |
3347 | { | |
3348 | target_architecture_auto = 1; | |
3349 | } | |
3350 | else | |
3351 | { | |
3352 | const bfd_arch_info_type *arch = bfd_scan_arch (args); | |
3353 | if (arch != NULL) | |
ee36741e | 3354 | set_arch (arch); |
d0aba53f | 3355 | else |
ee36741e | 3356 | printf_unfiltered ("Architecture `%s' not reconized.\n", args); |
d0aba53f AC |
3357 | } |
3358 | } | |
3359 | ||
3360 | /* Called if the user enters ``show architecture'' without an argument. */ | |
3361 | static void | |
3362 | show_architecture (args, from_tty) | |
3363 | char *args; | |
3364 | int from_tty; | |
3365 | { | |
3366 | const char *arch; | |
3367 | arch = target_architecture->printable_name; | |
3368 | if (target_architecture_auto) | |
3369 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
3370 | else | |
3371 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
3372 | } | |
3373 | ||
3374 | /* Called if the user enters ``info architecture'' without an argument. */ | |
3375 | static void | |
3376 | info_architecture (args, from_tty) | |
3377 | char *args; | |
3378 | int from_tty; | |
3379 | { | |
3380 | enum bfd_architecture a; | |
3381 | printf_filtered ("Available architectures are:\n"); | |
3382 | for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++) | |
3383 | { | |
3384 | const bfd_arch_info_type *ap = bfd_lookup_arch (a, 0); | |
3385 | if (ap != NULL) | |
3386 | { | |
3387 | do | |
3388 | { | |
3389 | printf_filtered (" %s", ap->printable_name); | |
3390 | ap = ap->next; | |
3391 | } | |
3392 | while (ap != NULL); | |
3393 | printf_filtered ("\n"); | |
3394 | } | |
3395 | } | |
3396 | } | |
3397 | ||
ee36741e AC |
3398 | /* Set the architecture from arch/machine */ |
3399 | void | |
3400 | set_architecture_from_arch_mach (arch, mach) | |
3401 | enum bfd_architecture arch; | |
3402 | unsigned long mach; | |
3403 | { | |
3404 | const bfd_arch_info_type *wanted = bfd_lookup_arch (arch, mach); | |
3405 | if (wanted != NULL) | |
3406 | set_arch (wanted); | |
3407 | else | |
3408 | fatal ("hardwired architecture/machine not reconized"); | |
3409 | } | |
3410 | ||
3411 | ||
d0aba53f AC |
3412 | /* Set the architecture from a BFD */ |
3413 | void | |
3414 | set_architecture_from_file (abfd) | |
3415 | bfd *abfd; | |
3416 | { | |
3417 | const bfd_arch_info_type *wanted = bfd_get_arch_info (abfd); | |
3418 | if (target_architecture_auto) | |
3419 | { | |
3420 | if (target_architecture_hook != NULL | |
3421 | && !target_architecture_hook (wanted)) | |
3422 | warning ("Target may not support %s architecture", | |
3423 | wanted->printable_name); | |
3424 | target_architecture = wanted; | |
3425 | } | |
3426 | else if (wanted != target_architecture) | |
3427 | { | |
3428 | warning ("%s architecture file may be incompatible with %s target.", | |
3429 | wanted->printable_name, | |
3430 | target_architecture->printable_name); | |
3431 | } | |
3432 | } | |
3433 | \f | |
172559ec JK |
3434 | /* Functions to manipulate command line editing control variables. */ |
3435 | ||
3436 | /* Number of commands to print in each call to show_commands. */ | |
3437 | #define Hist_print 10 | |
3438 | static void | |
3439 | show_commands (args, from_tty) | |
3440 | char *args; | |
3441 | int from_tty; | |
3442 | { | |
3443 | /* Index for history commands. Relative to history_base. */ | |
3444 | int offset; | |
3445 | ||
3446 | /* Number of the history entry which we are planning to display next. | |
3447 | Relative to history_base. */ | |
3448 | static int num = 0; | |
3449 | ||
3450 | /* The first command in the history which doesn't exist (i.e. one more | |
3451 | than the number of the last command). Relative to history_base. */ | |
3452 | int hist_len; | |
3453 | ||
3454 | extern HIST_ENTRY *history_get PARAMS ((int)); | |
3455 | ||
3456 | /* Print out some of the commands from the command history. */ | |
3457 | /* First determine the length of the history list. */ | |
3458 | hist_len = history_size; | |
3459 | for (offset = 0; offset < history_size; offset++) | |
3460 | { | |
3461 | if (!history_get (history_base + offset)) | |
3462 | { | |
3463 | hist_len = offset; | |
3464 | break; | |
3465 | } | |
3466 | } | |
3467 | ||
3468 | if (args) | |
3469 | { | |
3470 | if (args[0] == '+' && args[1] == '\0') | |
3471 | /* "info editing +" should print from the stored position. */ | |
3472 | ; | |
3473 | else | |
3474 | /* "info editing <exp>" should print around command number <exp>. */ | |
3475 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
3476 | } | |
3477 | /* "show commands" means print the last Hist_print commands. */ | |
3478 | else | |
3479 | { | |
3480 | num = hist_len - Hist_print; | |
3481 | } | |
3482 | ||
3483 | if (num < 0) | |
3484 | num = 0; | |
3485 | ||
3486 | /* If there are at least Hist_print commands, we want to display the last | |
3487 | Hist_print rather than, say, the last 6. */ | |
3488 | if (hist_len - num < Hist_print) | |
3489 | { | |
3490 | num = hist_len - Hist_print; | |
3491 | if (num < 0) | |
3492 | num = 0; | |
3493 | } | |
3494 | ||
3495 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
3496 | { | |
3497 | printf_filtered ("%5d %s\n", history_base + offset, | |
3498 | (history_get (history_base + offset))->line); | |
3499 | } | |
3500 | ||
3501 | /* The next command we want to display is the next one that we haven't | |
3502 | displayed yet. */ | |
3503 | num += Hist_print; | |
e52bfe0c | 3504 | |
172559ec JK |
3505 | /* If the user repeats this command with return, it should do what |
3506 | "show commands +" does. This is unnecessary if arg is null, | |
3507 | because "show commands +" is not useful after "show commands". */ | |
3508 | if (from_tty && args) | |
3509 | { | |
3510 | args[0] = '+'; | |
3511 | args[1] = '\0'; | |
3512 | } | |
3513 | } | |
3514 | ||
3515 | /* Called by do_setshow_command. */ | |
3516 | /* ARGSUSED */ | |
3517 | static void | |
3518 | set_history_size_command (args, from_tty, c) | |
3519 | char *args; | |
3520 | int from_tty; | |
3521 | struct cmd_list_element *c; | |
3522 | { | |
3523 | if (history_size == INT_MAX) | |
3524 | unstifle_history (); | |
3525 | else if (history_size >= 0) | |
3526 | stifle_history (history_size); | |
3527 | else | |
3528 | { | |
3529 | history_size = INT_MAX; | |
3530 | error ("History size must be non-negative"); | |
3531 | } | |
3532 | } | |
3533 | ||
3534 | /* ARGSUSED */ | |
3535 | static void | |
3536 | set_history (args, from_tty) | |
3537 | char *args; | |
3538 | int from_tty; | |
3539 | { | |
3540 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
3541 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
3542 | } | |
3543 | ||
3544 | /* ARGSUSED */ | |
3545 | static void | |
3546 | show_history (args, from_tty) | |
3547 | char *args; | |
3548 | int from_tty; | |
3549 | { | |
3550 | cmd_show_list (showhistlist, from_tty, ""); | |
3551 | } | |
3552 | ||
3553 | int info_verbose = 0; /* Default verbose msgs off */ | |
3554 | ||
3555 | /* Called by do_setshow_command. An elaborate joke. */ | |
3556 | /* ARGSUSED */ | |
e52bfe0c | 3557 | static void |
172559ec JK |
3558 | set_verbose (args, from_tty, c) |
3559 | char *args; | |
3560 | int from_tty; | |
3561 | struct cmd_list_element *c; | |
3562 | { | |
3563 | char *cmdname = "verbose"; | |
3564 | struct cmd_list_element *showcmd; | |
e52bfe0c | 3565 | |
172559ec JK |
3566 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); |
3567 | ||
3568 | if (info_verbose) | |
3569 | { | |
3570 | c->doc = "Set verbose printing of informational messages."; | |
3571 | showcmd->doc = "Show verbose printing of informational messages."; | |
3572 | } | |
3573 | else | |
3574 | { | |
3575 | c->doc = "Set verbosity."; | |
3576 | showcmd->doc = "Show verbosity."; | |
3577 | } | |
3578 | } | |
3579 | ||
3580 | static void | |
3581 | float_handler (signo) | |
3582 | int signo; | |
3583 | { | |
3584 | /* This message is based on ANSI C, section 4.7. Note that integer | |
3585 | divide by zero causes this, so "float" is a misnomer. */ | |
3586 | signal (SIGFPE, float_handler); | |
3587 | error ("Erroneous arithmetic operation."); | |
3588 | } | |
3589 | ||
172559ec JK |
3590 | \f |
3591 | static void | |
3592 | init_cmd_lists () | |
3593 | { | |
3594 | cmdlist = NULL; | |
3595 | infolist = NULL; | |
3596 | enablelist = NULL; | |
3597 | disablelist = NULL; | |
3598 | deletelist = NULL; | |
3599 | enablebreaklist = NULL; | |
3600 | setlist = NULL; | |
3601 | unsetlist = NULL; | |
3602 | showlist = NULL; | |
b8176214 | 3603 | endianlist = NULL; |
172559ec JK |
3604 | sethistlist = NULL; |
3605 | showhistlist = NULL; | |
3606 | unsethistlist = NULL; | |
3607 | #if MAINTENANCE_CMDS | |
3608 | maintenancelist = NULL; | |
3609 | maintenanceinfolist = NULL; | |
3610 | maintenanceprintlist = NULL; | |
3611 | #endif | |
3612 | setprintlist = NULL; | |
3613 | showprintlist = NULL; | |
3614 | setchecklist = NULL; | |
3615 | showchecklist = NULL; | |
3616 | } | |
3617 | ||
3618 | /* Init the history buffer. Note that we are called after the init file(s) | |
3619 | * have been read so that the user can change the history file via his | |
3620 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
3621 | * overrides all of this. | |
3622 | */ | |
3623 | ||
3624 | void | |
3625 | init_history() | |
3626 | { | |
3627 | char *tmpenv; | |
3628 | ||
3629 | tmpenv = getenv ("HISTSIZE"); | |
3630 | if (tmpenv) | |
3631 | history_size = atoi (tmpenv); | |
3632 | else if (!history_size) | |
3633 | history_size = 256; | |
3634 | ||
3635 | stifle_history (history_size); | |
3636 | ||
3637 | tmpenv = getenv ("GDBHISTFILE"); | |
3638 | if (tmpenv) | |
3639 | history_filename = savestring (tmpenv, strlen(tmpenv)); | |
3640 | else if (!history_filename) { | |
3641 | /* We include the current directory so that if the user changes | |
3642 | directories the file written will be the same as the one | |
3643 | that was read. */ | |
3644 | history_filename = concat (current_directory, "/.gdb_history", NULL); | |
3645 | } | |
3646 | read_history (history_filename); | |
3647 | } | |
3648 | ||
3649 | static void | |
3650 | init_main () | |
3651 | { | |
3652 | struct cmd_list_element *c; | |
e52bfe0c | 3653 | |
b8176214 ILT |
3654 | add_prefix_cmd ("endian", class_support, set_endian, |
3655 | "Set endianness of target.", | |
3656 | &endianlist, "set endian ", 0, &setlist); | |
3657 | add_cmd ("big", class_support, set_endian_big, | |
3658 | "Set target as being big endian.", &endianlist); | |
3659 | add_cmd ("little", class_support, set_endian_little, | |
3660 | "Set target as being little endian.", &endianlist); | |
b83ed019 ILT |
3661 | add_cmd ("auto", class_support, set_endian_auto, |
3662 | "Select target endianness automatically.", &endianlist); | |
b8176214 ILT |
3663 | add_cmd ("endian", class_support, show_endian, |
3664 | "Show endianness of target.", &showlist); | |
3665 | ||
d0aba53f AC |
3666 | add_cmd ("architecture", class_support, set_architecture, |
3667 | "Set architecture of target.", &setlist); | |
cd2c720a | 3668 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
d0aba53f AC |
3669 | add_cmd ("architecture", class_support, show_architecture, |
3670 | "Show architecture of target.", &showlist); | |
3671 | add_cmd ("architecture", class_support, info_architecture, | |
3672 | "List supported target architectures", &infolist); | |
3673 | ||
3674 | ||
172559ec JK |
3675 | #ifdef DEFAULT_PROMPT |
3676 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
3677 | #else | |
3678 | prompt = savestring ("(gdb) ", 6); | |
3679 | #endif | |
3680 | ||
3681 | /* Set the important stuff up for command editing. */ | |
3682 | command_editing_p = 1; | |
3683 | history_expansion_p = 0; | |
3684 | write_history_p = 0; | |
e52bfe0c | 3685 | |
172559ec | 3686 | /* Setup important stuff for command line editing. */ |
9ed8604f | 3687 | rl_completion_entry_function = (int (*)()) readline_line_completion_function; |
172559ec JK |
3688 | rl_completer_word_break_characters = gdb_completer_word_break_characters; |
3689 | rl_completer_quote_characters = gdb_completer_quote_characters; | |
3690 | rl_readline_name = "gdb"; | |
3691 | ||
3692 | /* Define the classes of commands. | |
3693 | They will appear in the help list in the reverse of this order. */ | |
3694 | ||
3695 | add_cmd ("internals", class_maintenance, NO_FUNCTION, | |
3696 | "Maintenance commands.\n\ | |
3697 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
3698 | These commands are subject to frequent change, and may not be as\n\ | |
3699 | well documented as user commands.", | |
3700 | &cmdlist); | |
3701 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); | |
3702 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
3703 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
3704 | The commands in this class are those defined by the user.\n\ | |
3705 | Use the \"define\" command to define a command.", &cmdlist); | |
3706 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
3707 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
3708 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
3709 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
3710 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
3711 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
3712 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
3713 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
3714 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
3715 | Variable lookups are done with respect to the selected frame.\n\ | |
3716 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
3717 | The commands below can be used to select other frames by number or address.", | |
3718 | &cmdlist); | |
3719 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
3720 | ||
3721 | add_com ("pwd", class_files, pwd_command, | |
3722 | "Print working directory. This is used for your program as well."); | |
3723 | c = add_cmd ("cd", class_files, cd_command, | |
3724 | "Set working directory to DIR for debugger and program being debugged.\n\ | |
3725 | The change does not take effect for the program being debugged\n\ | |
3726 | until the next time it is started.", &cmdlist); | |
3727 | c->completer = filename_completer; | |
3728 | ||
3729 | add_show_from_set | |
3730 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
3731 | "Set gdb's prompt", | |
3732 | &setlist), | |
3733 | &showlist); | |
e52bfe0c | 3734 | |
172559ec JK |
3735 | add_com ("echo", class_support, echo_command, |
3736 | "Print a constant string. Give string as argument.\n\ | |
3737 | C escape sequences may be used in the argument.\n\ | |
3738 | No newline is added at the end of the argument;\n\ | |
3739 | use \"\\n\" if you want a newline to be printed.\n\ | |
3740 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
3741 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
3742 | to be printed or after trailing whitespace."); | |
3743 | add_com ("document", class_support, document_command, | |
3744 | "Document a user-defined command.\n\ | |
3745 | Give command name as argument. Give documentation on following lines.\n\ | |
3746 | End with a line of just \"end\"."); | |
3747 | add_com ("define", class_support, define_command, | |
3748 | "Define a new command name. Command name is argument.\n\ | |
3749 | Definition appears on following lines, one command per line.\n\ | |
3750 | End with a line of just \"end\".\n\ | |
3751 | Use the \"document\" command to give documentation for the new command.\n\ | |
59528079 | 3752 | Commands defined in this way may have up to ten arguments."); |
172559ec JK |
3753 | |
3754 | #ifdef __STDC__ | |
3755 | c = add_cmd ("source", class_support, source_command, | |
3756 | "Read commands from a file named FILE.\n\ | |
3757 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
3758 | when gdb is started.", &cmdlist); | |
3759 | #else | |
3760 | /* Punt file name, we can't help it easily. */ | |
3761 | c = add_cmd ("source", class_support, source_command, | |
3762 | "Read commands from a file named FILE.\n\ | |
3763 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
3764 | when gdb is started.", &cmdlist); | |
3765 | #endif | |
3766 | c->completer = filename_completer; | |
3767 | ||
3768 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
3769 | add_com ("help", class_support, help_command, "Print list of commands."); | |
3770 | add_com_alias ("q", "quit", class_support, 1); | |
3771 | add_com_alias ("h", "help", class_support, 1); | |
3772 | ||
cd10c7e3 SG |
3773 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ |
3774 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
3775 | hitting return."); | |
172559ec JK |
3776 | |
3777 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
3778 | "Set ", | |
3779 | &setlist), | |
3780 | add_show_from_set (c, &showlist); | |
3781 | c->function.sfunc = set_verbose; | |
3782 | set_verbose (NULL, 0, c); | |
e52bfe0c | 3783 | |
172559ec JK |
3784 | add_show_from_set |
3785 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
3786 | "Set editing of command lines as they are typed.\n\ | |
6a85a617 | 3787 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
172559ec JK |
3788 | Without an argument, command line editing is enabled. To edit, use\n\ |
3789 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
3790 | &showlist); | |
3791 | ||
3792 | add_prefix_cmd ("history", class_support, set_history, | |
3793 | "Generic command for setting command history parameters.", | |
3794 | &sethistlist, "set history ", 0, &setlist); | |
3795 | add_prefix_cmd ("history", class_support, show_history, | |
3796 | "Generic command for showing command history parameters.", | |
3797 | &showhistlist, "show history ", 0, &showlist); | |
3798 | ||
3799 | add_show_from_set | |
3800 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
3801 | "Set history expansion on command input.\n\ | |
3802 | Without an argument, history expansion is enabled.", &sethistlist), | |
3803 | &showhistlist); | |
3804 | ||
3805 | add_show_from_set | |
3806 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, | |
3807 | "Set saving of the history record on exit.\n\ | |
6a85a617 | 3808 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
172559ec JK |
3809 | Without an argument, saving is enabled.", &sethistlist), |
3810 | &showhistlist); | |
3811 | ||
3812 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, | |
3813 | "Set the size of the command history, \n\ | |
3814 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
3815 | add_show_from_set (c, &showhistlist); | |
3816 | c->function.sfunc = set_history_size_command; | |
3817 | ||
3818 | add_show_from_set | |
3819 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
3820 | "Set the filename in which to record the command history\n\ | |
3821 | (the list of previous commands of which a record is kept).", &sethistlist), | |
3822 | &showhistlist); | |
3823 | ||
3824 | add_show_from_set | |
3825 | (add_set_cmd ("confirm", class_support, var_boolean, | |
3826 | (char *)&caution, | |
3827 | "Set whether to confirm potentially dangerous operations.", | |
3828 | &setlist), | |
3829 | &showlist); | |
3830 | ||
3831 | add_prefix_cmd ("info", class_info, info_command, | |
3832 | "Generic command for showing things about the program being debugged.", | |
3833 | &infolist, "info ", 0, &cmdlist); | |
3834 | add_com_alias ("i", "info", class_info, 1); | |
3835 | ||
3836 | add_com ("complete", class_obscure, complete_command, | |
3837 | "List the completions for the rest of the line as a command."); | |
3838 | ||
3839 | add_prefix_cmd ("show", class_info, show_command, | |
3840 | "Generic command for showing things about the debugger.", | |
3841 | &showlist, "show ", 0, &cmdlist); | |
3842 | /* Another way to get at the same thing. */ | |
3843 | add_info ("set", show_command, "Show all GDB settings."); | |
3844 | ||
3845 | add_cmd ("commands", no_class, show_commands, | |
943b7032 | 3846 | "Show the history of commands you typed.\n\ |
172559ec JK |
3847 | You can supply a command number to start with, or a `+' to start after\n\ |
3848 | the previous command number shown.", | |
3849 | &showlist); | |
3850 | ||
3851 | add_cmd ("version", no_class, show_version, | |
3852 | "Show what version of GDB this is.", &showlist); | |
3853 | ||
e52bfe0c JL |
3854 | add_com ("while", class_support, while_command, |
3855 | "Execute nested commands WHILE the conditional expression is non zero.\n\ | |
943b7032 PS |
3856 | The conditional expression must follow the word `while' and must in turn be\n\ |
3857 | followed by a new line. The nested commands must be entered one per line,\n\ | |
e52bfe0c JL |
3858 | and should be terminated by the word `end'."); |
3859 | ||
3860 | add_com ("if", class_support, if_command, | |
3861 | "Execute nested commands once IF the conditional expression is non zero.\n\ | |
943b7032 PS |
3862 | The conditional expression must follow the word `if' and must in turn be\n\ |
3863 | followed by a new line. The nested commands must be entered one per line,\n\ | |
3864 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
e52bfe0c JL |
3865 | is used, the same rules apply to its nested commands as to the first ones."); |
3866 | ||
172559ec JK |
3867 | /* If target is open when baud changes, it doesn't take effect until the |
3868 | next open (I think, not sure). */ | |
3869 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
3870 | var_zinteger, (char *)&baud_rate, | |
3871 | "Set baud rate for remote serial I/O.\n\ | |
3872 | This value is used to set the speed of the serial port when debugging\n\ | |
3873 | using remote targets.", &setlist), | |
3874 | &showlist); | |
3875 | ||
3876 | add_show_from_set ( | |
3877 | add_set_cmd ("remotedebug", no_class, var_zinteger, (char *)&remote_debug, | |
3878 | "Set debugging of remote protocol.\n\ | |
3879 | When enabled, each packet sent or received with the remote target\n\ | |
3880 | is displayed.", &setlist), | |
3881 | &showlist); | |
cb1709ae DP |
3882 | |
3883 | add_show_from_set ( | |
3884 | add_set_cmd ("remotetimeout", no_class, var_integer, (char *)&remote_timeout, | |
3885 | "Set timeout limit to wait for target to respond.\n\ | |
3886 | This value is used to set the time limit for gdb to wait for a response\n\ | |
3887 | from he target.", &setlist), | |
3888 | &showlist); | |
62dd860e MS |
3889 | |
3890 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, | |
3891 | (char *)&annotation_level, "Set annotation_level.\n\ | |
3892 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ | |
3893 | 2 == output annotated suitably for use by programs that control GDB.", | |
3894 | &setlist); | |
3895 | c = add_show_from_set (c, &showlist); | |
172559ec | 3896 | } |