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)); |
21b3bc77 KS |
382 | #ifdef __CYGWIN32__ |
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 SC |
462 | |
463 | ||
464 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
465 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
466 | ||
b607efe7 | 467 | NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN; |
45993f61 | 468 | |
172559ec JK |
469 | \f |
470 | /* Where to go for return_to_top_level (RETURN_ERROR). */ | |
4b65fd38 | 471 | SIGJMP_BUF error_return; |
172559ec | 472 | /* Where to go for return_to_top_level (RETURN_QUIT). */ |
4b65fd38 | 473 | SIGJMP_BUF quit_return; |
172559ec JK |
474 | |
475 | /* Return for reason REASON. This generally gets back to the command | |
476 | loop, but can be caught via catch_errors. */ | |
477 | ||
478 | NORETURN void | |
479 | return_to_top_level (reason) | |
480 | enum return_reason reason; | |
481 | { | |
482 | quit_flag = 0; | |
483 | immediate_quit = 0; | |
484 | ||
485 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
486 | I can think of a reason why that is vital, though). */ | |
487 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ | |
488 | ||
489 | disable_current_display (); | |
490 | do_cleanups (ALL_CLEANUPS); | |
491 | ||
492 | if (annotation_level > 1) | |
493 | switch (reason) | |
494 | { | |
495 | case RETURN_QUIT: | |
496 | annotate_quit (); | |
497 | break; | |
498 | case RETURN_ERROR: | |
499 | annotate_error (); | |
500 | break; | |
501 | } | |
502 | ||
4b65fd38 | 503 | (NORETURN void) SIGLONGJMP |
172559ec JK |
504 | (reason == RETURN_ERROR ? error_return : quit_return, 1); |
505 | } | |
506 | ||
507 | /* Call FUNC with arg ARGS, catching any errors. If there is no | |
508 | error, return the value returned by FUNC. If there is an error, | |
509 | print ERRSTRING, print the specific error message, then return | |
510 | zero. | |
511 | ||
512 | Must not be called with immediate_quit in effect (bad things might | |
513 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
514 | This is an OK restriction; with very few exceptions immediate_quit can | |
515 | be replaced by judicious use of QUIT. | |
516 | ||
517 | MASK specifies what to catch; it is normally set to | |
518 | RETURN_MASK_ALL, if for no other reason than that the code which | |
519 | calls catch_errors might not be set up to deal with a quit which | |
520 | isn't caught. But if the code can deal with it, it generally | |
521 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
522 | useful to abort only the portion of the operation inside the | |
523 | catch_errors. Note that quit should return to the command line | |
524 | fairly quickly, even if some further processing is being done. */ | |
525 | ||
526 | int | |
527 | catch_errors (func, args, errstring, mask) | |
528 | int (*func) PARAMS ((char *)); | |
529 | PTR args; | |
530 | char *errstring; | |
531 | return_mask mask; | |
532 | { | |
4b65fd38 DT |
533 | SIGJMP_BUF saved_error; |
534 | SIGJMP_BUF saved_quit; | |
535 | SIGJMP_BUF tmp_jmp; | |
172559ec JK |
536 | int val; |
537 | struct cleanup *saved_cleanup_chain; | |
538 | char *saved_error_pre_print; | |
dee80384 | 539 | char *saved_quit_pre_print; |
172559ec JK |
540 | |
541 | saved_cleanup_chain = save_cleanups (); | |
542 | saved_error_pre_print = error_pre_print; | |
dee80384 | 543 | saved_quit_pre_print = quit_pre_print; |
172559ec JK |
544 | |
545 | if (mask & RETURN_MASK_ERROR) | |
dee80384 | 546 | { |
4b65fd38 | 547 | memcpy ((char *)saved_error, (char *)error_return, sizeof (SIGJMP_BUF)); |
dee80384 JK |
548 | error_pre_print = errstring; |
549 | } | |
172559ec | 550 | if (mask & RETURN_MASK_QUIT) |
dee80384 | 551 | { |
4b65fd38 | 552 | memcpy (saved_quit, quit_return, sizeof (SIGJMP_BUF)); |
dee80384 JK |
553 | quit_pre_print = errstring; |
554 | } | |
172559ec | 555 | |
4b65fd38 | 556 | if (SIGSETJMP (tmp_jmp) == 0) |
172559ec JK |
557 | { |
558 | if (mask & RETURN_MASK_ERROR) | |
4b65fd38 | 559 | memcpy (error_return, tmp_jmp, sizeof (SIGJMP_BUF)); |
172559ec | 560 | if (mask & RETURN_MASK_QUIT) |
4b65fd38 | 561 | memcpy (quit_return, tmp_jmp, sizeof (SIGJMP_BUF)); |
172559ec JK |
562 | val = (*func) (args); |
563 | } | |
564 | else | |
565 | val = 0; | |
566 | ||
567 | restore_cleanups (saved_cleanup_chain); | |
568 | ||
172559ec | 569 | if (mask & RETURN_MASK_ERROR) |
dee80384 | 570 | { |
4b65fd38 | 571 | memcpy (error_return, saved_error, sizeof (SIGJMP_BUF)); |
dee80384 JK |
572 | error_pre_print = saved_error_pre_print; |
573 | } | |
172559ec | 574 | if (mask & RETURN_MASK_QUIT) |
dee80384 | 575 | { |
4b65fd38 | 576 | memcpy (quit_return, saved_quit, sizeof (SIGJMP_BUF)); |
dee80384 JK |
577 | quit_pre_print = saved_quit_pre_print; |
578 | } | |
172559ec JK |
579 | return val; |
580 | } | |
581 | ||
582 | /* Handler for SIGHUP. */ | |
583 | ||
4ce7ba51 | 584 | #ifdef SIGHUP |
172559ec JK |
585 | static void |
586 | disconnect (signo) | |
587 | int signo; | |
588 | { | |
589 | catch_errors (quit_cover, NULL, | |
590 | "Could not kill the program being debugged", RETURN_MASK_ALL); | |
591 | signal (SIGHUP, SIG_DFL); | |
592 | kill (getpid (), SIGHUP); | |
593 | } | |
594 | ||
595 | /* Just a little helper function for disconnect(). */ | |
596 | ||
597 | static int | |
598 | quit_cover (s) | |
599 | char *s; | |
600 | { | |
601 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
602 | This prevents asking the user dumb questions. */ | |
603 | quit_command((char *)0, 0); | |
604 | return 0; | |
605 | } | |
4ce7ba51 | 606 | #endif /* defined SIGHUP */ |
172559ec JK |
607 | \f |
608 | /* Line number we are currently in in a file which is being sourced. */ | |
609 | static int source_line_number; | |
610 | ||
611 | /* Name of the file we are sourcing. */ | |
612 | static char *source_file_name; | |
613 | ||
614 | /* Buffer containing the error_pre_print used by the source stuff. | |
615 | Malloc'd. */ | |
616 | static char *source_error; | |
617 | static int source_error_allocated; | |
618 | ||
619 | /* Something to glom on to the start of error_pre_print if source_file_name | |
620 | is set. */ | |
621 | static char *source_pre_error; | |
622 | ||
623 | /* Clean up on error during a "source" command (or execution of a | |
624 | user-defined command). */ | |
625 | ||
626 | static void | |
627 | source_cleanup (stream) | |
628 | FILE *stream; | |
629 | { | |
630 | /* Restore the previous input stream. */ | |
631 | instream = stream; | |
632 | } | |
633 | ||
634 | /* Read commands from STREAM. */ | |
635 | void | |
636 | read_command_file (stream) | |
637 | FILE *stream; | |
638 | { | |
639 | struct cleanup *cleanups; | |
640 | ||
641 | cleanups = make_cleanup (source_cleanup, instream); | |
642 | instream = stream; | |
643 | command_loop (); | |
644 | do_cleanups (cleanups); | |
645 | } | |
646 | \f | |
b607efe7 | 647 | extern void init_proc PARAMS ((void)); |
172559ec | 648 | |
43ab4ba5 SS |
649 | void (*pre_init_ui_hook) PARAMS ((void)); |
650 | ||
172559ec | 651 | void |
2476848a MH |
652 | gdb_init (argv0) |
653 | char *argv0; | |
172559ec | 654 | { |
43ab4ba5 SS |
655 | if (pre_init_ui_hook) |
656 | pre_init_ui_hook (); | |
657 | ||
172559ec JK |
658 | /* Run the init function of each source file */ |
659 | ||
b7ec5b8d FF |
660 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
661 | current_directory = gdb_dirbuf; | |
f36b58b1 | 662 | |
172559ec | 663 | init_cmd_lists (); /* This needs to be done first */ |
754e5da2 SG |
664 | initialize_targets (); /* Setup target_terminal macros for utils.c */ |
665 | initialize_utils (); /* Make errors and warnings possible */ | |
172559ec JK |
666 | initialize_all_files (); |
667 | init_main (); /* But that omits this file! Do it now */ | |
668 | init_signals (); | |
669 | ||
670 | init_proc (); | |
671 | ||
672 | /* We need a default language for parsing expressions, so simple things like | |
673 | "set width 0" won't fail if no language is explicitly set in a config file | |
674 | or implicitly set by reading an executable during startup. */ | |
675 | set_language (language_c); | |
676 | expected_language = current_language; /* don't warn about the change. */ | |
754e5da2 SG |
677 | |
678 | if (init_ui_hook) | |
2476848a | 679 | init_ui_hook (argv0); |
172559ec JK |
680 | } |
681 | ||
e52bfe0c JL |
682 | /* Allocate, initialize a new command line structure for one of the |
683 | control commands (if/while). */ | |
684 | ||
685 | static struct command_line * | |
686 | build_command_line (type, args) | |
687 | enum command_control_type type; | |
688 | char *args; | |
689 | { | |
690 | struct command_line *cmd; | |
691 | ||
a25ffb08 JL |
692 | if (args == NULL) |
693 | error ("if/while commands require arguments.\n"); | |
694 | ||
e52bfe0c JL |
695 | cmd = (struct command_line *)xmalloc (sizeof (struct command_line)); |
696 | cmd->next = NULL; | |
697 | cmd->control_type = type; | |
698 | ||
699 | cmd->body_count = 1; | |
700 | cmd->body_list | |
701 | = (struct command_line **)xmalloc (sizeof (struct command_line *) | |
702 | * cmd->body_count); | |
703 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); | |
704 | cmd->line = savestring (args, strlen (args)); | |
705 | return cmd; | |
706 | } | |
707 | ||
708 | /* Build and return a new command structure for the control commands | |
709 | such as "if" and "while". */ | |
710 | ||
711 | static struct command_line * | |
712 | get_command_line (type, arg) | |
713 | enum command_control_type type; | |
714 | char *arg; | |
715 | { | |
716 | struct command_line *cmd; | |
717 | struct cleanup *old_chain = NULL; | |
718 | ||
719 | /* Allocate and build a new command line structure. */ | |
720 | cmd = build_command_line (type, arg); | |
721 | ||
722 | old_chain = make_cleanup (free_command_lines, &cmd); | |
723 | ||
724 | /* Read in the body of this command. */ | |
725 | if (recurse_read_control_structure (cmd) == invalid_control) | |
726 | { | |
727 | warning ("error reading in control structure\n"); | |
728 | do_cleanups (old_chain); | |
729 | return NULL; | |
730 | } | |
731 | ||
732 | discard_cleanups (old_chain); | |
733 | return cmd; | |
734 | } | |
735 | ||
0f8cdd9b JL |
736 | /* Recursively print a command (including full control structures). */ |
737 | void | |
738 | print_command_line (cmd, depth) | |
739 | struct command_line *cmd; | |
740 | unsigned int depth; | |
741 | { | |
742 | unsigned int i; | |
743 | ||
744 | if (depth) | |
745 | { | |
746 | for (i = 0; i < depth; i++) | |
747 | fputs_filtered (" ", gdb_stdout); | |
748 | } | |
749 | ||
750 | /* A simple command, print it and return. */ | |
751 | if (cmd->control_type == simple_control) | |
752 | { | |
753 | fputs_filtered (cmd->line, gdb_stdout); | |
754 | fputs_filtered ("\n", gdb_stdout); | |
755 | return; | |
756 | } | |
757 | ||
758 | /* loop_continue to jump to the start of a while loop, print it | |
759 | and return. */ | |
760 | if (cmd->control_type == continue_control) | |
761 | { | |
762 | fputs_filtered ("loop_continue\n", gdb_stdout); | |
763 | return; | |
764 | } | |
765 | ||
766 | /* loop_break to break out of a while loop, print it and return. */ | |
767 | if (cmd->control_type == break_control) | |
768 | { | |
769 | fputs_filtered ("loop_break\n", gdb_stdout); | |
770 | return; | |
771 | } | |
772 | ||
773 | /* A while command. Recursively print its subcommands before returning. */ | |
774 | if (cmd->control_type == while_control) | |
775 | { | |
776 | struct command_line *list; | |
777 | fputs_filtered ("while ", gdb_stdout); | |
778 | fputs_filtered (cmd->line, gdb_stdout); | |
779 | fputs_filtered ("\n", gdb_stdout); | |
780 | list = *cmd->body_list; | |
781 | while (list) | |
782 | { | |
783 | print_command_line (list, depth + 1); | |
784 | list = list->next; | |
785 | } | |
786 | } | |
787 | ||
788 | /* An if command. Recursively print both arms before returning. */ | |
789 | if (cmd->control_type == if_control) | |
790 | { | |
791 | fputs_filtered ("if ", gdb_stdout); | |
792 | fputs_filtered (cmd->line, gdb_stdout); | |
793 | fputs_filtered ("\n", gdb_stdout); | |
794 | /* The true arm. */ | |
795 | print_command_line (cmd->body_list[0], depth + 1); | |
796 | ||
797 | /* Show the false arm if it exists. */ | |
798 | if (cmd->body_count == 2) | |
799 | { | |
800 | if (depth) | |
801 | { | |
802 | for (i = 0; i < depth; i++) | |
803 | fputs_filtered (" ", gdb_stdout); | |
804 | } | |
805 | fputs_filtered ("else\n", gdb_stdout); | |
806 | print_command_line (cmd->body_list[1], depth + 1); | |
807 | } | |
808 | if (depth) | |
809 | { | |
810 | for (i = 0; i < depth; i++) | |
811 | fputs_filtered (" ", gdb_stdout); | |
812 | } | |
813 | fputs_filtered ("end\n", gdb_stdout); | |
814 | } | |
815 | } | |
816 | ||
e52bfe0c JL |
817 | /* Execute the command in CMD. */ |
818 | ||
0f8cdd9b | 819 | enum command_control_type |
e52bfe0c JL |
820 | execute_control_command (cmd) |
821 | struct command_line *cmd; | |
822 | { | |
823 | struct expression *expr; | |
824 | struct command_line *current; | |
825 | struct cleanup *old_chain = 0; | |
e52bfe0c | 826 | value_ptr val; |
e20c36ba | 827 | value_ptr val_mark; |
e52bfe0c JL |
828 | int loop; |
829 | enum command_control_type ret; | |
0f8cdd9b | 830 | char *new_line; |
e52bfe0c JL |
831 | |
832 | switch (cmd->control_type) | |
833 | { | |
834 | case simple_control: | |
835 | /* A simple command, execute it and return. */ | |
0f8cdd9b JL |
836 | new_line = insert_args (cmd->line); |
837 | if (!new_line) | |
838 | return invalid_control; | |
839 | old_chain = make_cleanup (free_current_contents, &new_line); | |
840 | execute_command (new_line, 0); | |
841 | ret = cmd->control_type; | |
842 | break; | |
e52bfe0c JL |
843 | |
844 | case continue_control: | |
845 | case break_control: | |
846 | /* Return for "continue", and "break" so we can either | |
847 | continue the loop at the top, or break out. */ | |
0f8cdd9b JL |
848 | ret = cmd->control_type; |
849 | break; | |
e52bfe0c JL |
850 | |
851 | case while_control: | |
852 | { | |
853 | /* Parse the loop control expression for the while statement. */ | |
0f8cdd9b JL |
854 | new_line = insert_args (cmd->line); |
855 | if (!new_line) | |
856 | return invalid_control; | |
857 | old_chain = make_cleanup (free_current_contents, &new_line); | |
858 | expr = parse_expression (new_line); | |
859 | make_cleanup (free_current_contents, &expr); | |
860 | ||
e52bfe0c | 861 | ret = simple_control; |
b5776522 | 862 | loop = 1; |
e52bfe0c JL |
863 | |
864 | /* Keep iterating so long as the expression is true. */ | |
b5776522 | 865 | while (loop == 1) |
e52bfe0c | 866 | { |
e20c36ba JL |
867 | int cond_result; |
868 | ||
24ecc17a JL |
869 | QUIT; |
870 | ||
e52bfe0c | 871 | /* Evaluate the expression. */ |
e20c36ba | 872 | val_mark = value_mark (); |
e52bfe0c | 873 | val = evaluate_expression (expr); |
e20c36ba JL |
874 | cond_result = value_true (val); |
875 | value_free_to_mark (val_mark); | |
e52bfe0c JL |
876 | |
877 | /* If the value is false, then break out of the loop. */ | |
e20c36ba | 878 | if (!cond_result) |
e52bfe0c JL |
879 | break; |
880 | ||
881 | /* Execute the body of the while statement. */ | |
882 | current = *cmd->body_list; | |
883 | while (current) | |
884 | { | |
885 | ret = execute_control_command (current); | |
886 | ||
887 | /* If we got an error, or a "break" command, then stop | |
888 | looping. */ | |
889 | if (ret == invalid_control || ret == break_control) | |
890 | { | |
b5776522 | 891 | loop = 0; |
e52bfe0c JL |
892 | break; |
893 | } | |
894 | ||
895 | /* If we got a "continue" command, then restart the loop | |
896 | at this point. */ | |
897 | if (ret == continue_control) | |
898 | break; | |
899 | ||
900 | /* Get the next statement. */ | |
901 | current = current->next; | |
902 | } | |
903 | } | |
904 | ||
905 | /* Reset RET so that we don't recurse the break all the way down. */ | |
906 | if (ret == break_control) | |
907 | ret = simple_control; | |
908 | ||
909 | break; | |
910 | } | |
911 | ||
912 | case if_control: | |
913 | { | |
0f8cdd9b JL |
914 | new_line = insert_args (cmd->line); |
915 | if (!new_line) | |
916 | return invalid_control; | |
917 | old_chain = make_cleanup (free_current_contents, &new_line); | |
e52bfe0c | 918 | /* Parse the conditional for the if statement. */ |
0f8cdd9b JL |
919 | expr = parse_expression (new_line); |
920 | make_cleanup (free_current_contents, &expr); | |
e52bfe0c JL |
921 | |
922 | current = NULL; | |
923 | ret = simple_control; | |
924 | ||
925 | /* Evaluate the conditional. */ | |
e20c36ba | 926 | val_mark = value_mark (); |
e52bfe0c JL |
927 | val = evaluate_expression (expr); |
928 | ||
929 | /* Choose which arm to take commands from based on the value of the | |
930 | conditional expression. */ | |
931 | if (value_true (val)) | |
932 | current = *cmd->body_list; | |
933 | else if (cmd->body_count == 2) | |
934 | current = *(cmd->body_list + 1); | |
e20c36ba | 935 | value_free_to_mark (val_mark); |
e52bfe0c JL |
936 | |
937 | /* Execute commands in the given arm. */ | |
938 | while (current) | |
939 | { | |
940 | ret = execute_control_command (current); | |
941 | ||
942 | /* If we got an error, get out. */ | |
943 | if (ret != simple_control) | |
944 | break; | |
945 | ||
946 | /* Get the next statement in the body. */ | |
947 | current = current->next; | |
948 | } | |
0f8cdd9b | 949 | |
e52bfe0c JL |
950 | break; |
951 | } | |
952 | ||
953 | default: | |
954 | warning ("Invalid control type in command structure."); | |
955 | return invalid_control; | |
956 | } | |
957 | ||
958 | if (old_chain) | |
959 | do_cleanups (old_chain); | |
960 | ||
961 | return ret; | |
962 | } | |
963 | ||
964 | /* "while" command support. Executes a body of statements while the | |
965 | loop condition is nonzero. */ | |
966 | ||
967 | static void | |
968 | while_command (arg, from_tty) | |
969 | char *arg; | |
970 | int from_tty; | |
971 | { | |
972 | struct command_line *command = NULL; | |
973 | ||
974 | control_level = 1; | |
975 | command = get_command_line (while_control, arg); | |
976 | ||
977 | if (command == NULL) | |
978 | return; | |
979 | ||
980 | execute_control_command (command); | |
981 | free_command_lines (&command); | |
982 | } | |
983 | ||
984 | /* "if" command support. Execute either the true or false arm depending | |
985 | on the value of the if conditional. */ | |
986 | ||
987 | static void | |
988 | if_command (arg, from_tty) | |
989 | char *arg; | |
990 | int from_tty; | |
991 | { | |
992 | struct command_line *command = NULL; | |
993 | ||
994 | control_level = 1; | |
995 | command = get_command_line (if_control, arg); | |
996 | ||
997 | if (command == NULL) | |
998 | return; | |
999 | ||
1000 | execute_control_command (command); | |
1001 | free_command_lines (&command); | |
1002 | } | |
1003 | ||
0f8cdd9b JL |
1004 | /* Cleanup */ |
1005 | static void | |
1006 | arg_cleanup () | |
1007 | { | |
1008 | struct user_args *oargs = user_args; | |
1009 | if (!user_args) | |
1010 | fatal ("Internal error, arg_cleanup called with no user args.\n"); | |
1011 | ||
1012 | user_args = user_args->next; | |
1013 | free (oargs); | |
1014 | } | |
1015 | ||
1016 | /* Bind the incomming arguments for a user defined command to | |
1017 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
1018 | ||
1019 | static struct cleanup * | |
1020 | setup_user_args (p) | |
1021 | char *p; | |
1022 | { | |
1023 | struct user_args *args; | |
1024 | struct cleanup *old_chain; | |
1025 | unsigned int arg_count = 0; | |
1026 | ||
1027 | args = (struct user_args *)xmalloc (sizeof (struct user_args)); | |
1028 | memset (args, 0, sizeof (struct user_args)); | |
1029 | ||
1030 | args->next = user_args; | |
1031 | user_args = args; | |
1032 | ||
1033 | old_chain = make_cleanup (arg_cleanup, 0); | |
1034 | ||
1035 | if (p == NULL) | |
1036 | return old_chain; | |
1037 | ||
1038 | while (*p) | |
1039 | { | |
1040 | char *start_arg; | |
ac7a8760 PS |
1041 | int squote = 0; |
1042 | int dquote = 0; | |
1043 | int bsquote = 0; | |
0f8cdd9b JL |
1044 | |
1045 | if (arg_count >= MAXUSERARGS) | |
1046 | { | |
1047 | error ("user defined function may only have %d arguments.\n", | |
1048 | MAXUSERARGS); | |
1049 | return old_chain; | |
1050 | } | |
1051 | ||
1052 | /* Strip whitespace. */ | |
1053 | while (*p == ' ' || *p == '\t') | |
1054 | p++; | |
1055 | ||
1056 | /* P now points to an argument. */ | |
1057 | start_arg = p; | |
1058 | user_args->a[arg_count].arg = p; | |
1059 | ||
1060 | /* Get to the end of this argument. */ | |
ac7a8760 PS |
1061 | while (*p) |
1062 | { | |
1063 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
1064 | break; | |
1065 | else | |
1066 | { | |
1067 | if (bsquote) | |
1068 | bsquote = 0; | |
1069 | else if (*p == '\\') | |
1070 | bsquote = 1; | |
1071 | else if (squote) | |
1072 | { | |
1073 | if (*p == '\'') | |
1074 | squote = 0; | |
1075 | } | |
1076 | else if (dquote) | |
1077 | { | |
1078 | if (*p == '"') | |
1079 | dquote = 0; | |
1080 | } | |
1081 | else | |
1082 | { | |
1083 | if (*p == '\'') | |
1084 | squote = 1; | |
1085 | else if (*p == '"') | |
1086 | dquote = 1; | |
1087 | } | |
1088 | p++; | |
1089 | } | |
1090 | } | |
0f8cdd9b JL |
1091 | |
1092 | user_args->a[arg_count].len = p - start_arg; | |
1093 | arg_count++; | |
1094 | user_args->count++; | |
1095 | } | |
1096 | return old_chain; | |
1097 | } | |
1098 | ||
1099 | /* Given character string P, return a point to the first argument ($arg), | |
1100 | or NULL if P contains no arguments. */ | |
1101 | ||
1102 | static char * | |
1103 | locate_arg (p) | |
1104 | char *p; | |
1105 | { | |
e3be225e | 1106 | while ((p = strchr (p, '$'))) |
0f8cdd9b JL |
1107 | { |
1108 | if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4])) | |
1109 | return p; | |
1110 | p++; | |
1111 | } | |
1112 | return NULL; | |
1113 | } | |
1114 | ||
1115 | /* Insert the user defined arguments stored in user_arg into the $arg | |
1116 | arguments found in line, with the updated copy being placed into nline. */ | |
1117 | ||
1118 | static char * | |
1119 | insert_args (line) | |
1120 | char *line; | |
1121 | { | |
1122 | char *p, *save_line, *new_line; | |
1123 | unsigned len, i; | |
1124 | ||
1125 | /* First we need to know how much memory to allocate for the new line. */ | |
1126 | save_line = line; | |
1127 | len = 0; | |
e3be225e | 1128 | while ((p = locate_arg (line))) |
0f8cdd9b JL |
1129 | { |
1130 | len += p - line; | |
1131 | i = p[4] - '0'; | |
1132 | ||
1133 | if (i >= user_args->count) | |
1134 | { | |
1135 | error ("Missing argument %d in user function.\n", i); | |
1136 | return NULL; | |
1137 | } | |
1138 | len += user_args->a[i].len; | |
1139 | line = p + 5; | |
1140 | } | |
1141 | ||
1142 | /* Don't forget the tail. */ | |
1143 | len += strlen (line); | |
1144 | ||
1145 | /* Allocate space for the new line and fill it in. */ | |
1146 | new_line = (char *)xmalloc (len + 1); | |
1147 | if (new_line == NULL) | |
1148 | return NULL; | |
1149 | ||
1150 | /* Restore pointer to beginning of old line. */ | |
1151 | line = save_line; | |
1152 | ||
1153 | /* Save pointer to beginning of new line. */ | |
1154 | save_line = new_line; | |
1155 | ||
e3be225e | 1156 | while ((p = locate_arg (line))) |
0f8cdd9b JL |
1157 | { |
1158 | int i, len; | |
1159 | ||
1160 | memcpy (new_line, line, p - line); | |
1161 | new_line += p - line; | |
1162 | i = p[4] - '0'; | |
1163 | ||
e3be225e SS |
1164 | len = user_args->a[i].len; |
1165 | if (len) | |
0f8cdd9b JL |
1166 | { |
1167 | memcpy (new_line, user_args->a[i].arg, len); | |
1168 | new_line += len; | |
1169 | } | |
1170 | line = p + 5; | |
1171 | } | |
1172 | /* Don't forget the tail. */ | |
1173 | strcpy (new_line, line); | |
1174 | ||
1175 | /* Return a pointer to the beginning of the new line. */ | |
1176 | return save_line; | |
1177 | } | |
1178 | ||
172559ec JK |
1179 | void |
1180 | execute_user_command (c, args) | |
1181 | struct cmd_list_element *c; | |
1182 | char *args; | |
1183 | { | |
1184 | register struct command_line *cmdlines; | |
1185 | struct cleanup *old_chain; | |
e52bfe0c JL |
1186 | enum command_control_type ret; |
1187 | ||
0f8cdd9b | 1188 | old_chain = setup_user_args (args); |
172559ec JK |
1189 | |
1190 | cmdlines = c->user_commands; | |
1191 | if (cmdlines == 0) | |
1192 | /* Null command */ | |
1193 | return; | |
1194 | ||
1195 | /* Set the instream to 0, indicating execution of a | |
1196 | user-defined function. */ | |
1197 | old_chain = make_cleanup (source_cleanup, instream); | |
1198 | instream = (FILE *) 0; | |
1199 | while (cmdlines) | |
1200 | { | |
e52bfe0c JL |
1201 | ret = execute_control_command (cmdlines); |
1202 | if (ret != simple_control && ret != break_control) | |
1203 | { | |
1204 | warning ("Error in control structure.\n"); | |
1205 | break; | |
1206 | } | |
172559ec JK |
1207 | cmdlines = cmdlines->next; |
1208 | } | |
1209 | do_cleanups (old_chain); | |
1210 | } | |
1211 | ||
1212 | /* Execute the line P as a command. | |
1213 | Pass FROM_TTY as second argument to the defining function. */ | |
1214 | ||
1215 | void | |
1216 | execute_command (p, from_tty) | |
1217 | char *p; | |
1218 | int from_tty; | |
1219 | { | |
1220 | register struct cmd_list_element *c; | |
1221 | register enum language flang; | |
1222 | static int warned = 0; | |
b607efe7 | 1223 | /* FIXME: These should really be in an appropriate header file */ |
b607efe7 | 1224 | extern void serial_log_command PARAMS ((const char *)); |
172559ec JK |
1225 | |
1226 | free_all_values (); | |
1227 | ||
5959df8e JL |
1228 | /* Force cleanup of any alloca areas if using C alloca instead of |
1229 | a builtin alloca. */ | |
1230 | alloca (0); | |
1231 | ||
172559ec JK |
1232 | /* This can happen when command_line_input hits end of file. */ |
1233 | if (p == NULL) | |
1234 | return; | |
e52bfe0c | 1235 | |
d9951af4 | 1236 | serial_log_command (p); |
e8f1ad9a | 1237 | |
172559ec JK |
1238 | while (*p == ' ' || *p == '\t') p++; |
1239 | if (*p) | |
1240 | { | |
1241 | char *arg; | |
e52bfe0c | 1242 | |
172559ec JK |
1243 | c = lookup_cmd (&p, cmdlist, "", 0, 1); |
1244 | /* Pass null arg rather than an empty one. */ | |
1245 | arg = *p ? p : 0; | |
1246 | ||
080868b4 PS |
1247 | /* Clear off trailing whitespace, except for set and complete command. */ |
1248 | if (arg && c->type != set_cmd && c->function.cfunc != complete_command) | |
1249 | { | |
1250 | p = arg + strlen (arg) - 1; | |
1251 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
1252 | p--; | |
1253 | *(p + 1) = '\0'; | |
1254 | } | |
1255 | ||
172559ec JK |
1256 | /* If this command has been hooked, run the hook first. */ |
1257 | if (c->hook) | |
1258 | execute_user_command (c->hook, (char *)0); | |
1259 | ||
1260 | if (c->class == class_user) | |
1261 | execute_user_command (c, arg); | |
1262 | else if (c->type == set_cmd || c->type == show_cmd) | |
1263 | do_setshow_command (arg, from_tty & caution, c); | |
1264 | else if (c->function.cfunc == NO_FUNCTION) | |
1265 | error ("That is not a command, just a help topic."); | |
479f0f18 SG |
1266 | else if (call_command_hook) |
1267 | call_command_hook (c, arg, from_tty & caution); | |
172559ec JK |
1268 | else |
1269 | (*c->function.cfunc) (arg, from_tty & caution); | |
1270 | } | |
1271 | ||
1272 | /* Tell the user if the language has changed (except first time). */ | |
1273 | if (current_language != expected_language) | |
1274 | { | |
1275 | if (language_mode == language_mode_auto) { | |
1276 | language_info (1); /* Print what changed. */ | |
1277 | } | |
1278 | warned = 0; | |
1279 | } | |
1280 | ||
1281 | /* Warn the user if the working language does not match the | |
1282 | language of the current frame. Only warn the user if we are | |
1283 | actually running the program, i.e. there is a stack. */ | |
1284 | /* FIXME: This should be cacheing the frame and only running when | |
1285 | the frame changes. */ | |
43ab4ba5 | 1286 | |
172559ec | 1287 | if (target_has_stack) |
172559ec | 1288 | { |
43ab4ba5 SS |
1289 | flang = get_frame_language (); |
1290 | if (!warned | |
1291 | && flang != language_unknown | |
1292 | && flang != current_language->la_language) | |
1293 | { | |
1294 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1295 | warned = 1; | |
1296 | } | |
172559ec | 1297 | } |
172559ec JK |
1298 | } |
1299 | ||
1300 | /* ARGSUSED */ | |
1301 | static void | |
1302 | command_loop_marker (foo) | |
1303 | int foo; | |
1304 | { | |
1305 | } | |
1306 | ||
1307 | /* Read commands from `instream' and execute them | |
1308 | until end of file or error reading instream. */ | |
43ab4ba5 | 1309 | |
172559ec JK |
1310 | void |
1311 | command_loop () | |
1312 | { | |
1313 | struct cleanup *old_chain; | |
1314 | char *command; | |
1315 | int stdin_is_tty = ISATTY (stdin); | |
43ab4ba5 | 1316 | long time_at_cmd_start; |
38d715a4 | 1317 | #ifdef HAVE_SBRK |
83ebf439 | 1318 | long space_at_cmd_start; |
38d715a4 | 1319 | #endif |
43ab4ba5 SS |
1320 | extern int display_time; |
1321 | extern int display_space; | |
172559ec | 1322 | |
41756e56 | 1323 | while (instream && !feof (instream)) |
172559ec JK |
1324 | { |
1325 | if (window_hook && instream == stdin) | |
1326 | (*window_hook) (instream, prompt); | |
1327 | ||
1328 | quit_flag = 0; | |
1329 | if (instream == stdin && stdin_is_tty) | |
1330 | reinitialize_more_filter (); | |
1331 | old_chain = make_cleanup (command_loop_marker, 0); | |
1332 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, | |
1333 | instream == stdin, "prompt"); | |
1334 | if (command == 0) | |
1335 | return; | |
43ab4ba5 SS |
1336 | |
1337 | time_at_cmd_start = get_run_time (); | |
1338 | ||
83ebf439 SS |
1339 | if (display_space) |
1340 | { | |
38d715a4 | 1341 | #ifdef HAVE_SBRK |
83ebf439 SS |
1342 | extern char **environ; |
1343 | char *lim = (char *) sbrk (0); | |
1344 | ||
1345 | space_at_cmd_start = (long) (lim - (char *) &environ); | |
38d715a4 | 1346 | #endif |
83ebf439 SS |
1347 | } |
1348 | ||
172559ec JK |
1349 | execute_command (command, instream == stdin); |
1350 | /* Do any commands attached to breakpoint we stopped at. */ | |
1351 | bpstat_do_actions (&stop_bpstat); | |
1352 | do_cleanups (old_chain); | |
43ab4ba5 SS |
1353 | |
1354 | if (display_time) | |
1355 | { | |
1356 | long cmd_time = get_run_time () - time_at_cmd_start; | |
1357 | ||
1358 | printf_unfiltered ("Command execution time: %ld.%06ld\n", | |
1359 | cmd_time / 1000000, cmd_time % 1000000); | |
1360 | } | |
1361 | ||
1362 | if (display_space) | |
1363 | { | |
38d715a4 | 1364 | #ifdef HAVE_SBRK |
43ab4ba5 SS |
1365 | extern char **environ; |
1366 | char *lim = (char *) sbrk (0); | |
83ebf439 SS |
1367 | long space_now = lim - (char *) &environ; |
1368 | long space_diff = space_now - space_at_cmd_start; | |
43ab4ba5 | 1369 | |
83ebf439 SS |
1370 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", |
1371 | space_now, | |
1372 | (space_diff >= 0 ? '+' : '-'), | |
1373 | space_diff); | |
38d715a4 | 1374 | #endif |
43ab4ba5 | 1375 | } |
172559ec JK |
1376 | } |
1377 | } | |
1378 | \f | |
1379 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1380 | ||
1381 | void | |
1382 | dont_repeat () | |
1383 | { | |
1384 | if (server_command) | |
1385 | return; | |
1386 | ||
1387 | /* If we aren't reading from standard input, we are saving the last | |
1388 | thing read from stdin in line and don't want to delete it. Null lines | |
1389 | won't repeat here in any case. */ | |
1390 | if (instream == stdin) | |
1391 | *line = 0; | |
1392 | } | |
1393 | \f | |
1394 | /* Read a line from the stream "instream" without command line editing. | |
1395 | ||
1396 | It prints PRROMPT once at the start. | |
e52bfe0c | 1397 | Action is compatible with "readline", e.g. space for the result is |
172559ec JK |
1398 | malloc'd and should be freed by the caller. |
1399 | ||
1400 | A NULL return means end of file. */ | |
1401 | char * | |
1402 | gdb_readline (prrompt) | |
1403 | char *prrompt; | |
1404 | { | |
1405 | int c; | |
1406 | char *result; | |
1407 | int input_index = 0; | |
1408 | int result_size = 80; | |
1409 | ||
1410 | if (prrompt) | |
1411 | { | |
1412 | /* Don't use a _filtered function here. It causes the assumed | |
1413 | character position to be off, since the newline we read from | |
1414 | the user is not accounted for. */ | |
1415 | fputs_unfiltered (prrompt, gdb_stdout); | |
172559ec JK |
1416 | #ifdef MPW |
1417 | /* Move to a new line so the entered line doesn't have a prompt | |
1418 | on the front of it. */ | |
1419 | fputs_unfiltered ("\n", gdb_stdout); | |
1420 | #endif /* MPW */ | |
172559ec JK |
1421 | gdb_flush (gdb_stdout); |
1422 | } | |
e52bfe0c | 1423 | |
172559ec JK |
1424 | result = (char *) xmalloc (result_size); |
1425 | ||
1426 | while (1) | |
1427 | { | |
1428 | /* Read from stdin if we are executing a user defined command. | |
1429 | This is the right thing for prompt_for_continue, at least. */ | |
1430 | c = fgetc (instream ? instream : stdin); | |
1431 | ||
1432 | if (c == EOF) | |
1433 | { | |
1434 | if (input_index > 0) | |
1435 | /* The last line does not end with a newline. Return it, and | |
1436 | if we are called again fgetc will still return EOF and | |
1437 | we'll return NULL then. */ | |
1438 | break; | |
1439 | free (result); | |
1440 | return NULL; | |
1441 | } | |
1442 | ||
1443 | if (c == '\n') | |
1444 | break; | |
1445 | ||
1446 | result[input_index++] = c; | |
1447 | while (input_index >= result_size) | |
1448 | { | |
1449 | result_size *= 2; | |
1450 | result = (char *) xrealloc (result, result_size); | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | result[input_index++] = '\0'; | |
1455 | return result; | |
1456 | } | |
1457 | ||
1458 | /* Variables which control command line editing and history | |
1459 | substitution. These variables are given default values at the end | |
1460 | of this file. */ | |
1461 | static int command_editing_p; | |
1462 | static int history_expansion_p; | |
1463 | static int write_history_p; | |
1464 | static int history_size; | |
1465 | static char *history_filename; | |
1466 | ||
1467 | /* readline uses the word breaks for two things: | |
1468 | (1) In figuring out where to point the TEXT parameter to the | |
1469 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1470 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1471 | it does affect how much stuff M-? lists. | |
1472 | (2) If one of the matches contains a word break character, readline | |
1473 | will quote it. That's why we switch between | |
1474 | gdb_completer_word_break_characters and | |
1475 | gdb_completer_command_word_break_characters. I'm not sure when | |
1476 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1477 | ||
1478 | /* Variables which are necessary for fancy command line editing. */ | |
1479 | char *gdb_completer_word_break_characters = | |
1480 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; | |
1481 | ||
1482 | /* When completing on command names, we remove '-' from the list of | |
1483 | word break characters, since we use it in command names. If the | |
1484 | readline library sees one in any of the current completion strings, | |
1485 | it thinks that the string needs to be quoted and automatically supplies | |
1486 | a leading quote. */ | |
1487 | char *gdb_completer_command_word_break_characters = | |
1488 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1489 | ||
1490 | /* Characters that can be used to quote completion strings. Note that we | |
1491 | can't include '"' because the gdb C parser treats such quoted sequences | |
1492 | as strings. */ | |
1493 | char *gdb_completer_quote_characters = | |
1494 | "'"; | |
1495 | ||
1496 | /* Functions that are used as part of the fancy command line editing. */ | |
1497 | ||
1498 | /* This can be used for functions which don't want to complete on symbols | |
1499 | but don't want to complete on anything else either. */ | |
1500 | /* ARGSUSED */ | |
1501 | char ** | |
1502 | noop_completer (text, prefix) | |
1503 | char *text; | |
1504 | char *prefix; | |
1505 | { | |
1506 | return NULL; | |
1507 | } | |
1508 | ||
1509 | /* Complete on filenames. */ | |
1510 | char ** | |
1511 | filename_completer (text, word) | |
1512 | char *text; | |
1513 | char *word; | |
1514 | { | |
1515 | /* From readline. */ | |
3f550b59 | 1516 | extern char *filename_completion_function PARAMS ((char *, int)); |
172559ec JK |
1517 | int subsequent_name; |
1518 | char **return_val; | |
1519 | int return_val_used; | |
1520 | int return_val_alloced; | |
1521 | ||
1522 | return_val_used = 0; | |
1523 | /* Small for testing. */ | |
1524 | return_val_alloced = 1; | |
1525 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1526 | ||
1527 | subsequent_name = 0; | |
1528 | while (1) | |
1529 | { | |
1530 | char *p; | |
1531 | p = filename_completion_function (text, subsequent_name); | |
1532 | if (return_val_used >= return_val_alloced) | |
1533 | { | |
1534 | return_val_alloced *= 2; | |
1535 | return_val = | |
1536 | (char **) xrealloc (return_val, | |
1537 | return_val_alloced * sizeof (char *)); | |
1538 | } | |
1539 | if (p == NULL) | |
1540 | { | |
1541 | return_val[return_val_used++] = p; | |
1542 | break; | |
1543 | } | |
1544 | /* Like emacs, don't complete on old versions. Especially useful | |
1545 | in the "source" command. */ | |
1546 | if (p[strlen (p) - 1] == '~') | |
1547 | continue; | |
1548 | ||
1549 | { | |
1550 | char *q; | |
1551 | if (word == text) | |
1552 | /* Return exactly p. */ | |
1553 | return_val[return_val_used++] = p; | |
1554 | else if (word > text) | |
1555 | { | |
1556 | /* Return some portion of p. */ | |
1557 | q = xmalloc (strlen (p) + 5); | |
1558 | strcpy (q, p + (word - text)); | |
1559 | return_val[return_val_used++] = q; | |
1560 | free (p); | |
1561 | } | |
1562 | else | |
1563 | { | |
1564 | /* Return some of TEXT plus p. */ | |
1565 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1566 | strncpy (q, word, text - word); | |
1567 | q[text - word] = '\0'; | |
1568 | strcat (q, p); | |
1569 | return_val[return_val_used++] = q; | |
1570 | free (p); | |
1571 | } | |
1572 | } | |
1573 | subsequent_name = 1; | |
1574 | } | |
1575 | #if 0 | |
1576 | /* There is no way to do this just long enough to affect quote inserting | |
1577 | without also affecting the next completion. This should be fixed in | |
1578 | readline. FIXME. */ | |
1579 | /* Insure that readline does the right thing | |
1580 | with respect to inserting quotes. */ | |
1581 | rl_completer_word_break_characters = ""; | |
1582 | #endif | |
1583 | return return_val; | |
1584 | } | |
1585 | ||
1586 | /* Here are some useful test cases for completion. FIXME: These should | |
1587 | be put in the test suite. They should be tested with both M-? and TAB. | |
1588 | ||
1589 | "show output-" "radix" | |
1590 | "show output" "-radix" | |
1591 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1592 | "p " ambiguous (all symbols) | |
1593 | "info t foo" no completions | |
1594 | "info t " no completions | |
1595 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1596 | "info ajksdlfk" no completions | |
1597 | "info ajksdlfk " no completions | |
1598 | "info" " " | |
1599 | "info " ambiguous (all info commands) | |
1600 | "p \"a" no completions (string constant) | |
1601 | "p 'a" ambiguous (all symbols starting with a) | |
1602 | "p b-a" ambiguous (all symbols starting with a) | |
1603 | "p b-" ambiguous (all symbols) | |
1604 | "file Make" "file" (word break hard to screw up here) | |
1605 | "file ../gdb.stabs/we" "ird" (needs to not break word at slash) | |
1606 | */ | |
1607 | ||
1608 | /* Generate completions one by one for the completer. Each time we are | |
9ed8604f PS |
1609 | called return another potential completion to the caller. |
1610 | line_completion just completes on commands or passes the buck to the | |
1611 | command's completer function, the stuff specific to symbol completion | |
172559ec JK |
1612 | is in make_symbol_completion_list. |
1613 | ||
9ed8604f | 1614 | TEXT is the caller's idea of the "word" we are looking at. |
172559ec JK |
1615 | |
1616 | MATCHES is the number of matches that have currently been collected from | |
1617 | calling this completion function. When zero, then we need to initialize, | |
1618 | otherwise the initialization has already taken place and we can just | |
1619 | return the next potential completion string. | |
1620 | ||
9ed8604f PS |
1621 | LINE_BUFFER is available to be looked at; it contains the entire text |
1622 | of the line. POINT is the offset in that line of the cursor. You | |
1623 | should pretend that the line ends at POINT. | |
172559ec | 1624 | |
9ed8604f PS |
1625 | Returns NULL if there are no more completions, else a pointer to a string |
1626 | which is a possible completion, it is the caller's responsibility to | |
1627 | free the string. */ | |
172559ec JK |
1628 | |
1629 | static char * | |
9ed8604f | 1630 | line_completion_function (text, matches, line_buffer, point) |
172559ec JK |
1631 | char *text; |
1632 | int matches; | |
9ed8604f PS |
1633 | char *line_buffer; |
1634 | int point; | |
172559ec JK |
1635 | { |
1636 | static char **list = (char **)NULL; /* Cache of completions */ | |
1637 | static int index; /* Next cached completion */ | |
1638 | char *output = NULL; | |
1639 | char *tmp_command, *p; | |
1640 | /* Pointer within tmp_command which corresponds to text. */ | |
1641 | char *word; | |
1642 | struct cmd_list_element *c, *result_list; | |
1643 | ||
1644 | if (matches == 0) | |
1645 | { | |
1646 | /* The caller is beginning to accumulate a new set of completions, so | |
1647 | we need to find all of them now, and cache them for returning one at | |
1648 | a time on future calls. */ | |
1649 | ||
1650 | if (list) | |
1651 | { | |
1652 | /* Free the storage used by LIST, but not by the strings inside. | |
1653 | This is because rl_complete_internal () frees the strings. */ | |
1654 | free ((PTR)list); | |
1655 | } | |
1656 | list = 0; | |
1657 | index = 0; | |
1658 | ||
1659 | /* Choose the default set of word break characters to break completions. | |
1660 | If we later find out that we are doing completions on command strings | |
1661 | (as opposed to strings supplied by the individual command completer | |
1662 | functions, which can be any string) then we will switch to the | |
1663 | special word break set for command strings, which leaves out the | |
1664 | '-' character used in some commands. */ | |
1665 | ||
1666 | rl_completer_word_break_characters = | |
1667 | gdb_completer_word_break_characters; | |
1668 | ||
1669 | /* Decide whether to complete on a list of gdb commands or on symbols. */ | |
9ed8604f | 1670 | tmp_command = (char *) alloca (point + 1); |
172559ec JK |
1671 | p = tmp_command; |
1672 | ||
9ed8604f PS |
1673 | strncpy (tmp_command, line_buffer, point); |
1674 | tmp_command[point] = '\0'; | |
172559ec | 1675 | /* Since text always contains some number of characters leading up |
9ed8604f | 1676 | to point, we can find the equivalent position in tmp_command |
172559ec | 1677 | by subtracting that many characters from the end of tmp_command. */ |
9ed8604f | 1678 | word = tmp_command + point - strlen (text); |
172559ec | 1679 | |
9ed8604f | 1680 | if (point == 0) |
172559ec JK |
1681 | { |
1682 | /* An empty line we want to consider ambiguous; that is, it | |
1683 | could be any command. */ | |
1684 | c = (struct cmd_list_element *) -1; | |
1685 | result_list = 0; | |
1686 | } | |
1687 | else | |
1688 | { | |
1689 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1690 | } | |
1691 | ||
1692 | /* Move p up to the next interesting thing. */ | |
1693 | while (*p == ' ' || *p == '\t') | |
1694 | { | |
1695 | p++; | |
1696 | } | |
1697 | ||
1698 | if (!c) | |
1699 | { | |
1700 | /* It is an unrecognized command. So there are no | |
1701 | possible completions. */ | |
1702 | list = NULL; | |
1703 | } | |
1704 | else if (c == (struct cmd_list_element *) -1) | |
1705 | { | |
1706 | char *q; | |
1707 | ||
1708 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1709 | doesn't advance over that thing itself. Do so now. */ | |
1710 | q = p; | |
1711 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1712 | ++q; | |
9ed8604f | 1713 | if (q != tmp_command + point) |
172559ec JK |
1714 | { |
1715 | /* There is something beyond the ambiguous | |
1716 | command, so there are no possible completions. For | |
1717 | example, "info t " or "info t foo" does not complete | |
1718 | to anything, because "info t" can be "info target" or | |
1719 | "info terminal". */ | |
1720 | list = NULL; | |
1721 | } | |
1722 | else | |
1723 | { | |
1724 | /* We're trying to complete on the command which was ambiguous. | |
1725 | This we can deal with. */ | |
1726 | if (result_list) | |
1727 | { | |
1728 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1729 | word); | |
1730 | } | |
1731 | else | |
1732 | { | |
1733 | list = complete_on_cmdlist (cmdlist, p, word); | |
1734 | } | |
1735 | /* Insure that readline does the right thing with respect to | |
1736 | inserting quotes. */ | |
1737 | rl_completer_word_break_characters = | |
1738 | gdb_completer_command_word_break_characters; | |
1739 | } | |
1740 | } | |
1741 | else | |
1742 | { | |
1743 | /* We've recognized a full command. */ | |
1744 | ||
9ed8604f | 1745 | if (p == tmp_command + point) |
172559ec JK |
1746 | { |
1747 | /* There is no non-whitespace in the line beyond the command. */ | |
1748 | ||
1749 | if (p[-1] == ' ' || p[-1] == '\t') | |
1750 | { | |
1751 | /* The command is followed by whitespace; we need to complete | |
1752 | on whatever comes after command. */ | |
1753 | if (c->prefixlist) | |
1754 | { | |
1755 | /* It is a prefix command; what comes after it is | |
1756 | a subcommand (e.g. "info "). */ | |
1757 | list = complete_on_cmdlist (*c->prefixlist, p, word); | |
1758 | ||
1759 | /* Insure that readline does the right thing | |
1760 | with respect to inserting quotes. */ | |
1761 | rl_completer_word_break_characters = | |
1762 | gdb_completer_command_word_break_characters; | |
1763 | } | |
09374c98 SG |
1764 | else if (c->enums) |
1765 | { | |
1766 | list = complete_on_enum (c->enums, p, word); | |
1767 | rl_completer_word_break_characters = | |
1768 | gdb_completer_command_word_break_characters; | |
1769 | } | |
172559ec JK |
1770 | else |
1771 | { | |
1772 | /* It is a normal command; what comes after it is | |
1773 | completed by the command's completer function. */ | |
1774 | list = (*c->completer) (p, word); | |
1775 | } | |
1776 | } | |
1777 | else | |
1778 | { | |
1779 | /* The command is not followed by whitespace; we need to | |
1780 | complete on the command itself. e.g. "p" which is a | |
1781 | command itself but also can complete to "print", "ptype" | |
1782 | etc. */ | |
1783 | char *q; | |
1784 | ||
1785 | /* Find the command we are completing on. */ | |
1786 | q = p; | |
1787 | while (q > tmp_command) | |
1788 | { | |
1789 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1790 | --q; | |
1791 | else | |
1792 | break; | |
1793 | } | |
1794 | ||
1795 | list = complete_on_cmdlist (result_list, q, word); | |
1796 | ||
1797 | /* Insure that readline does the right thing | |
1798 | with respect to inserting quotes. */ | |
1799 | rl_completer_word_break_characters = | |
1800 | gdb_completer_command_word_break_characters; | |
1801 | } | |
1802 | } | |
1803 | else | |
1804 | { | |
1805 | /* There is non-whitespace beyond the command. */ | |
1806 | ||
1807 | if (c->prefixlist && !c->allow_unknown) | |
1808 | { | |
1809 | /* It is an unrecognized subcommand of a prefix command, | |
1810 | e.g. "info adsfkdj". */ | |
1811 | list = NULL; | |
1812 | } | |
09374c98 SG |
1813 | else if (c->enums) |
1814 | { | |
1815 | list = complete_on_enum (c->enums, p, word); | |
1816 | } | |
172559ec JK |
1817 | else |
1818 | { | |
1819 | /* It is a normal command. */ | |
1820 | list = (*c->completer) (p, word); | |
1821 | } | |
1822 | } | |
1823 | } | |
1824 | } | |
1825 | ||
1826 | /* If we found a list of potential completions during initialization then | |
1827 | dole them out one at a time. The vector of completions is NULL | |
1828 | terminated, so after returning the last one, return NULL (and continue | |
1829 | to do so) each time we are called after that, until a new list is | |
1830 | available. */ | |
1831 | ||
1832 | if (list) | |
1833 | { | |
1834 | output = list[index]; | |
1835 | if (output) | |
1836 | { | |
1837 | index++; | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | #if 0 | |
1842 | /* Can't do this because readline hasn't yet checked the word breaks | |
1843 | for figuring out whether to insert a quote. */ | |
1844 | if (output == NULL) | |
1845 | /* Make sure the word break characters are set back to normal for the | |
1846 | next time that readline tries to complete something. */ | |
1847 | rl_completer_word_break_characters = | |
1848 | gdb_completer_word_break_characters; | |
1849 | #endif | |
1850 | ||
1851 | return (output); | |
1852 | } | |
1853 | ||
9ed8604f PS |
1854 | /* Line completion interface function for readline. */ |
1855 | ||
1856 | static char * | |
1857 | readline_line_completion_function (text, matches) | |
1858 | char *text; | |
1859 | int matches; | |
1860 | { | |
1861 | return line_completion_function (text, matches, rl_line_buffer, rl_point); | |
1862 | } | |
1863 | ||
172559ec JK |
1864 | /* Skip over a possibly quoted word (as defined by the quote characters |
1865 | and word break characters the completer uses). Returns pointer to the | |
1866 | location after the "word". */ | |
1867 | ||
1868 | char * | |
1869 | skip_quoted (str) | |
1870 | char *str; | |
1871 | { | |
1872 | char quote_char = '\0'; | |
1873 | char *scan; | |
1874 | ||
1875 | for (scan = str; *scan != '\0'; scan++) | |
1876 | { | |
1877 | if (quote_char != '\0') | |
1878 | { | |
1879 | /* Ignore everything until the matching close quote char */ | |
1880 | if (*scan == quote_char) | |
1881 | { | |
1882 | /* Found matching close quote. */ | |
1883 | scan++; | |
1884 | break; | |
1885 | } | |
1886 | } | |
1887 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1888 | { | |
1889 | /* Found start of a quoted string. */ | |
1890 | quote_char = *scan; | |
1891 | } | |
1892 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1893 | { | |
1894 | break; | |
1895 | } | |
1896 | } | |
1897 | return (scan); | |
1898 | } | |
1899 | ||
1900 | \f | |
1901 | #ifdef STOP_SIGNAL | |
1902 | static void | |
1903 | stop_sig (signo) | |
1904 | int signo; | |
1905 | { | |
1906 | #if STOP_SIGNAL == SIGTSTP | |
1907 | signal (SIGTSTP, SIG_DFL); | |
1908 | sigsetmask (0); | |
1909 | kill (getpid (), SIGTSTP); | |
1910 | signal (SIGTSTP, stop_sig); | |
1911 | #else | |
1912 | signal (STOP_SIGNAL, stop_sig); | |
1913 | #endif | |
1914 | printf_unfiltered ("%s", prompt); | |
1915 | gdb_flush (gdb_stdout); | |
1916 | ||
1917 | /* Forget about any previous command -- null line now will do nothing. */ | |
1918 | dont_repeat (); | |
1919 | } | |
1920 | #endif /* STOP_SIGNAL */ | |
1921 | ||
1922 | /* Initialize signal handlers. */ | |
1923 | static void | |
1924 | do_nothing (signo) | |
1925 | int signo; | |
1926 | { | |
8d743926 JM |
1927 | /* Under System V the default disposition of a signal is reinstated after |
1928 | the signal is caught and delivered to an application process. On such | |
1929 | systems one must restore the replacement signal handler if one wishes | |
1930 | to continue handling the signal in one's program. On BSD systems this | |
1931 | is not needed but it is harmless, and it simplifies the code to just do | |
1932 | it unconditionally. */ | |
1933 | signal (signo, do_nothing); | |
172559ec JK |
1934 | } |
1935 | ||
1936 | static void | |
1937 | init_signals () | |
1938 | { | |
1939 | signal (SIGINT, request_quit); | |
1940 | ||
255181a9 PS |
1941 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed |
1942 | to the inferior and breakpoints will be ignored. */ | |
1943 | #ifdef SIGTRAP | |
1944 | signal (SIGTRAP, SIG_DFL); | |
1945 | #endif | |
1946 | ||
172559ec JK |
1947 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get |
1948 | passed to the inferior, which we don't want. It would be | |
1949 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
1950 | on BSD4.3 systems using vfork, that can affect the | |
1951 | GDB process as well as the inferior (the signal handling tables | |
1952 | might be in memory, shared between the two). Since we establish | |
1953 | a handler for SIGQUIT, when we call exec it will set the signal | |
1954 | to SIG_DFL for us. */ | |
1955 | signal (SIGQUIT, do_nothing); | |
4ce7ba51 | 1956 | #ifdef SIGHUP |
172559ec JK |
1957 | if (signal (SIGHUP, do_nothing) != SIG_IGN) |
1958 | signal (SIGHUP, disconnect); | |
4ce7ba51 | 1959 | #endif |
172559ec JK |
1960 | signal (SIGFPE, float_handler); |
1961 | ||
1962 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1963 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1964 | #endif | |
1965 | } | |
1966 | \f | |
1967 | /* Read one line from the command input stream `instream' | |
1968 | into the local static buffer `linebuffer' (whose current length | |
1969 | is `linelength'). | |
1970 | The buffer is made bigger as necessary. | |
1971 | Returns the address of the start of the line. | |
1972 | ||
1973 | NULL is returned for end of file. | |
1974 | ||
1975 | *If* the instream == stdin & stdin is a terminal, the line read | |
1976 | is copied into the file line saver (global var char *line, | |
1977 | length linesize) so that it can be duplicated. | |
1978 | ||
1979 | This routine either uses fancy command line editing or | |
1980 | simple input as the user has requested. */ | |
1981 | ||
1982 | char * | |
1983 | command_line_input (prrompt, repeat, annotation_suffix) | |
1984 | char *prrompt; | |
1985 | int repeat; | |
1986 | char *annotation_suffix; | |
1987 | { | |
1988 | static char *linebuffer = 0; | |
1989 | static unsigned linelength = 0; | |
1990 | register char *p; | |
1991 | char *p1; | |
1992 | char *rl; | |
1993 | char *local_prompt = prrompt; | |
172559ec JK |
1994 | char *nline; |
1995 | char got_eof = 0; | |
1996 | ||
dfb14bc8 SS |
1997 | /* The annotation suffix must be non-NULL. */ |
1998 | if (annotation_suffix == NULL) | |
1999 | annotation_suffix = ""; | |
2000 | ||
172559ec JK |
2001 | if (annotation_level > 1 && instream == stdin) |
2002 | { | |
2003 | local_prompt = alloca ((prrompt == NULL ? 0 : strlen (prrompt)) | |
2004 | + strlen (annotation_suffix) + 40); | |
2005 | if (prrompt == NULL) | |
2006 | local_prompt[0] = '\0'; | |
2007 | else | |
2008 | strcpy (local_prompt, prrompt); | |
2009 | strcat (local_prompt, "\n\032\032"); | |
2010 | strcat (local_prompt, annotation_suffix); | |
2011 | strcat (local_prompt, "\n"); | |
2012 | } | |
2013 | ||
2014 | if (linebuffer == 0) | |
2015 | { | |
2016 | linelength = 80; | |
2017 | linebuffer = (char *) xmalloc (linelength); | |
2018 | } | |
2019 | ||
2020 | p = linebuffer; | |
2021 | ||
2022 | /* Control-C quits instantly if typed while in this loop | |
2023 | since it should not wait until the user types a newline. */ | |
2024 | immediate_quit++; | |
2025 | #ifdef STOP_SIGNAL | |
2026 | if (job_control) | |
2027 | signal (STOP_SIGNAL, stop_sig); | |
2028 | #endif | |
2029 | ||
2030 | while (1) | |
2031 | { | |
2032 | /* Make sure that all output has been output. Some machines may let | |
2033 | you get away with leaving out some of the gdb_flush, but not all. */ | |
2034 | wrap_here (""); | |
2035 | gdb_flush (gdb_stdout); | |
2036 | gdb_flush (gdb_stderr); | |
2037 | ||
2038 | if (source_file_name != NULL) | |
2039 | { | |
2040 | ++source_line_number; | |
2041 | sprintf (source_error, | |
2042 | "%s%s:%d: Error in sourced command file:\n", | |
2043 | source_pre_error, | |
2044 | source_file_name, | |
2045 | source_line_number); | |
2046 | error_pre_print = source_error; | |
2047 | } | |
2048 | ||
2049 | if (annotation_level > 1 && instream == stdin) | |
2050 | { | |
2051 | printf_unfiltered ("\n\032\032pre-"); | |
2052 | printf_unfiltered (annotation_suffix); | |
2053 | printf_unfiltered ("\n"); | |
2054 | } | |
2055 | ||
2056 | /* Don't use fancy stuff if not talking to stdin. */ | |
41756e56 FF |
2057 | if (readline_hook && instream == NULL) |
2058 | { | |
2059 | rl = (*readline_hook) (local_prompt); | |
2060 | } | |
2061 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
2062 | { | |
2063 | rl = readline (local_prompt); | |
2064 | } | |
172559ec | 2065 | else |
41756e56 FF |
2066 | { |
2067 | rl = gdb_readline (local_prompt); | |
2068 | } | |
172559ec JK |
2069 | |
2070 | if (annotation_level > 1 && instream == stdin) | |
2071 | { | |
2072 | printf_unfiltered ("\n\032\032post-"); | |
2073 | printf_unfiltered (annotation_suffix); | |
2074 | printf_unfiltered ("\n"); | |
2075 | } | |
2076 | ||
2077 | if (!rl || rl == (char *) EOF) | |
2078 | { | |
2079 | got_eof = 1; | |
2080 | break; | |
2081 | } | |
2082 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
2083 | { | |
2084 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
2085 | nline = (char *) xrealloc (linebuffer, linelength); | |
2086 | p += nline - linebuffer; | |
2087 | linebuffer = nline; | |
2088 | } | |
2089 | p1 = rl; | |
2090 | /* Copy line. Don't copy null at end. (Leaves line alone | |
2091 | if this was just a newline) */ | |
2092 | while (*p1) | |
2093 | *p++ = *p1++; | |
2094 | ||
2095 | free (rl); /* Allocated in readline. */ | |
2096 | ||
2097 | if (p == linebuffer || *(p - 1) != '\\') | |
2098 | break; | |
2099 | ||
2100 | p--; /* Put on top of '\'. */ | |
2101 | local_prompt = (char *) 0; | |
2102 | } | |
2103 | ||
2104 | #ifdef STOP_SIGNAL | |
2105 | if (job_control) | |
2106 | signal (STOP_SIGNAL, SIG_DFL); | |
2107 | #endif | |
2108 | immediate_quit--; | |
2109 | ||
2110 | if (got_eof) | |
2111 | return NULL; | |
2112 | ||
2113 | #define SERVER_COMMAND_LENGTH 7 | |
2114 | server_command = | |
2115 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
2116 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); | |
2117 | if (server_command) | |
2118 | { | |
2119 | /* Note that we don't set `line'. Between this and the check in | |
2120 | dont_repeat, this insures that repeating will still do the | |
2121 | right thing. */ | |
2122 | *p = '\0'; | |
2123 | return linebuffer + SERVER_COMMAND_LENGTH; | |
2124 | } | |
2125 | ||
2126 | /* Do history expansion if that is wished. */ | |
2127 | if (history_expansion_p && instream == stdin | |
2128 | && ISATTY (instream)) | |
2129 | { | |
2130 | char *history_value; | |
2131 | int expanded; | |
2132 | ||
2133 | *p = '\0'; /* Insert null now. */ | |
2134 | expanded = history_expand (linebuffer, &history_value); | |
2135 | if (expanded) | |
2136 | { | |
2137 | /* Print the changes. */ | |
2138 | printf_unfiltered ("%s\n", history_value); | |
2139 | ||
2140 | /* If there was an error, call this function again. */ | |
2141 | if (expanded < 0) | |
2142 | { | |
2143 | free (history_value); | |
2144 | return command_line_input (prrompt, repeat, annotation_suffix); | |
2145 | } | |
2146 | if (strlen (history_value) > linelength) | |
2147 | { | |
2148 | linelength = strlen (history_value) + 1; | |
2149 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
2150 | } | |
2151 | strcpy (linebuffer, history_value); | |
2152 | p = linebuffer + strlen(linebuffer); | |
2153 | free (history_value); | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* If we just got an empty line, and that is supposed | |
2158 | to repeat the previous command, return the value in the | |
2159 | global buffer. */ | |
f2ed3a80 PB |
2160 | if (repeat && p == linebuffer) |
2161 | return line; | |
2162 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++) ; | |
2163 | if (repeat && !*p1) | |
2164 | return line; | |
172559ec JK |
2165 | |
2166 | *p = 0; | |
2167 | ||
2168 | /* Add line to history if appropriate. */ | |
2169 | if (instream == stdin | |
2170 | && ISATTY (stdin) && *linebuffer) | |
2171 | add_history (linebuffer); | |
2172 | ||
2173 | /* Note: lines consisting solely of comments are added to the command | |
2174 | history. This is useful when you type a command, and then | |
2175 | realize you don't want to execute it quite yet. You can comment | |
2176 | out the command and then later fetch it from the value history | |
2177 | and remove the '#'. The kill ring is probably better, but some | |
2178 | people are in the habit of commenting things out. */ | |
f2ed3a80 PB |
2179 | if (*p1 == '#') |
2180 | *p1 = '\0'; /* Found a comment. */ | |
172559ec JK |
2181 | |
2182 | /* Save into global buffer if appropriate. */ | |
2183 | if (repeat) | |
2184 | { | |
2185 | if (linelength > linesize) | |
2186 | { | |
2187 | line = xrealloc (line, linelength); | |
2188 | linesize = linelength; | |
2189 | } | |
2190 | strcpy (line, linebuffer); | |
2191 | return line; | |
2192 | } | |
2193 | ||
2194 | return linebuffer; | |
2195 | } | |
2196 | \f | |
e52bfe0c JL |
2197 | |
2198 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
2199 | code bodies. This is typically used when we encounter an "else" | |
2200 | clause for an "if" command. */ | |
2201 | ||
2202 | static void | |
2203 | realloc_body_list (command, new_length) | |
2204 | struct command_line *command; | |
2205 | int new_length; | |
2206 | { | |
2207 | int n; | |
2208 | struct command_line **body_list; | |
2209 | ||
2210 | n = command->body_count; | |
2211 | ||
2212 | /* Nothing to do? */ | |
2213 | if (new_length <= n) | |
2214 | return; | |
2215 | ||
2216 | body_list = (struct command_line **) | |
2217 | xmalloc (sizeof (struct command_line *) * new_length); | |
2218 | ||
2219 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
2220 | ||
2221 | free (command->body_list); | |
2222 | command->body_list = body_list; | |
2223 | command->body_count = new_length; | |
2224 | } | |
2225 | ||
2226 | /* Read one line from the input stream. If the command is an "else" or | |
2227 | "end", return such an indication to the caller. */ | |
2228 | ||
2229 | static enum misc_command_type | |
2230 | read_next_line (command) | |
2231 | struct command_line **command; | |
2232 | { | |
2233 | char *p, *p1, *prompt_ptr, control_prompt[256]; | |
2234 | int i = 0; | |
2235 | ||
2236 | if (control_level >= 254) | |
2237 | error ("Control nesting too deep!\n"); | |
2238 | ||
2239 | /* Set a prompt based on the nesting of the control commands. */ | |
41756e56 | 2240 | if (instream == stdin || (instream == 0 && readline_hook != NULL)) |
e52bfe0c JL |
2241 | { |
2242 | for (i = 0; i < control_level; i++) | |
2243 | control_prompt[i] = ' '; | |
2244 | control_prompt[i] = '>'; | |
2245 | control_prompt[i+1] = '\0'; | |
2246 | prompt_ptr = (char *)&control_prompt[0]; | |
2247 | } | |
2248 | else | |
2249 | prompt_ptr = NULL; | |
2250 | ||
e04f8901 | 2251 | p = command_line_input (prompt_ptr, instream == stdin, "commands"); |
e52bfe0c JL |
2252 | |
2253 | /* Not sure what to do here. */ | |
2254 | if (p == NULL) | |
2255 | return end_command; | |
2256 | ||
2257 | /* Strip leading and trailing whitespace. */ | |
2258 | while (*p == ' ' || *p == '\t') | |
2259 | p++; | |
2260 | ||
2261 | p1 = p + strlen (p); | |
2262 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) | |
2263 | p1--; | |
2264 | ||
2265 | /* Blanks and comments don't really do anything, but we need to | |
2266 | distinguish them from else, end and other commands which can be | |
2267 | executed. */ | |
2268 | if (p1 == p || p[0] == '#') | |
2269 | return nop_command; | |
2270 | ||
2271 | /* Is this the end of a simple, while, or if control structure? */ | |
2272 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
2273 | return end_command; | |
2274 | ||
2275 | /* Is the else clause of an if control structure? */ | |
2276 | if (p1 - p == 4 && !strncmp (p, "else", 4)) | |
2277 | return else_command; | |
2278 | ||
2279 | /* Check for while, if, break, continue, etc and build a new command | |
2280 | line structure for them. */ | |
2281 | if (p1 - p > 5 && !strncmp (p, "while", 5)) | |
2282 | *command = build_command_line (while_control, p + 6); | |
2283 | else if (p1 - p > 2 && !strncmp (p, "if", 2)) | |
2284 | *command = build_command_line (if_control, p + 3); | |
ecebd693 | 2285 | else if (p1 - p == 10 && !strncmp (p, "loop_break", 10)) |
e52bfe0c JL |
2286 | { |
2287 | *command = (struct command_line *) | |
2288 | xmalloc (sizeof (struct command_line)); | |
2289 | (*command)->next = NULL; | |
2290 | (*command)->line = NULL; | |
2291 | (*command)->control_type = break_control; | |
2292 | (*command)->body_count = 0; | |
2293 | (*command)->body_list = NULL; | |
2294 | } | |
ecebd693 | 2295 | else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13)) |
e52bfe0c JL |
2296 | { |
2297 | *command = (struct command_line *) | |
2298 | xmalloc (sizeof (struct command_line)); | |
2299 | (*command)->next = NULL; | |
2300 | (*command)->line = NULL; | |
2301 | (*command)->control_type = continue_control; | |
2302 | (*command)->body_count = 0; | |
2303 | (*command)->body_list = NULL; | |
2304 | } | |
2305 | else | |
2306 | { | |
2307 | /* A normal command. */ | |
2308 | *command = (struct command_line *) | |
2309 | xmalloc (sizeof (struct command_line)); | |
2310 | (*command)->next = NULL; | |
2311 | (*command)->line = savestring (p, p1 - p); | |
2312 | (*command)->control_type = simple_control; | |
2313 | (*command)->body_count = 0; | |
2314 | (*command)->body_list = NULL; | |
2315 | } | |
2316 | ||
2317 | /* Nothing special. */ | |
2318 | return ok_command; | |
2319 | } | |
2320 | ||
2321 | /* Recursively read in the control structures and create a command_line | |
41756e56 | 2322 | structure from them. |
e52bfe0c JL |
2323 | |
2324 | The parent_control parameter is the control structure in which the | |
2325 | following commands are nested. */ | |
2326 | ||
2327 | static enum command_control_type | |
2328 | recurse_read_control_structure (current_cmd) | |
2329 | struct command_line *current_cmd; | |
2330 | { | |
2331 | int current_body, i; | |
2332 | enum misc_command_type val; | |
2333 | enum command_control_type ret; | |
2334 | struct command_line **body_ptr, *child_tail, *next; | |
e52bfe0c | 2335 | |
e52bfe0c JL |
2336 | child_tail = NULL; |
2337 | current_body = 1; | |
2338 | ||
2339 | /* Sanity checks. */ | |
2340 | if (current_cmd->control_type == simple_control) | |
2341 | { | |
2342 | error ("Recursed on a simple control type\n"); | |
2343 | return invalid_control; | |
2344 | } | |
2345 | ||
2346 | if (current_body > current_cmd->body_count) | |
2347 | { | |
2348 | error ("Allocated body is smaller than this command type needs\n"); | |
2349 | return invalid_control; | |
2350 | } | |
2351 | ||
2352 | /* Read lines from the input stream and build control structures. */ | |
2353 | while (1) | |
2354 | { | |
2355 | dont_repeat (); | |
2356 | ||
2357 | next = NULL; | |
2358 | val = read_next_line (&next); | |
2359 | ||
2360 | /* Just skip blanks and comments. */ | |
2361 | if (val == nop_command) | |
2362 | continue; | |
2363 | ||
2364 | if (val == end_command) | |
2365 | { | |
2366 | if (current_cmd->control_type == while_control | |
2367 | || current_cmd->control_type == if_control) | |
2368 | { | |
2369 | /* Success reading an entire control structure. */ | |
2370 | ret = simple_control; | |
2371 | break; | |
2372 | } | |
2373 | else | |
2374 | { | |
2375 | ret = invalid_control; | |
2376 | break; | |
2377 | } | |
2378 | } | |
2379 | ||
2380 | /* Not the end of a control structure. */ | |
2381 | if (val == else_command) | |
2382 | { | |
2383 | if (current_cmd->control_type == if_control | |
2384 | && current_body == 1) | |
2385 | { | |
2386 | realloc_body_list (current_cmd, 2); | |
2387 | current_body = 2; | |
2388 | child_tail = NULL; | |
2389 | continue; | |
2390 | } | |
2391 | else | |
2392 | { | |
2393 | ret = invalid_control; | |
2394 | break; | |
2395 | } | |
2396 | } | |
2397 | ||
2398 | if (child_tail) | |
2399 | { | |
2400 | child_tail->next = next; | |
2401 | } | |
2402 | else | |
2403 | { | |
e52bfe0c JL |
2404 | body_ptr = current_cmd->body_list; |
2405 | for (i = 1; i < current_body; i++) | |
2406 | body_ptr++; | |
2407 | ||
2408 | *body_ptr = next; | |
2409 | ||
e52bfe0c JL |
2410 | } |
2411 | ||
2412 | child_tail = next; | |
2413 | ||
2414 | /* If the latest line is another control structure, then recurse | |
2415 | on it. */ | |
2416 | if (next->control_type == while_control | |
2417 | || next->control_type == if_control) | |
2418 | { | |
2419 | control_level++; | |
2420 | ret = recurse_read_control_structure (next); | |
2421 | control_level--; | |
2422 | ||
2423 | if (ret != simple_control) | |
2424 | break; | |
2425 | } | |
2426 | } | |
2427 | ||
2428 | dont_repeat (); | |
e52bfe0c JL |
2429 | |
2430 | return ret; | |
2431 | } | |
2432 | ||
41756e56 FF |
2433 | /* Read lines from the input stream and accumulate them in a chain of |
2434 | struct command_line's, which is then returned. For input from a | |
2435 | terminal, the special command "end" is used to mark the end of the | |
2436 | input, and is not included in the returned chain of commands. */ | |
e52bfe0c | 2437 | |
41756e56 | 2438 | #define END_MESSAGE "End with a line saying just \"end\"." |
172559ec JK |
2439 | |
2440 | struct command_line * | |
41756e56 FF |
2441 | read_command_lines (prompt, from_tty) |
2442 | char *prompt; | |
2443 | int from_tty; | |
172559ec | 2444 | { |
e52bfe0c JL |
2445 | struct command_line *head, *tail, *next; |
2446 | struct cleanup *old_chain; | |
2447 | enum command_control_type ret; | |
2448 | enum misc_command_type val; | |
2449 | ||
41756e56 FF |
2450 | if (readline_begin_hook) |
2451 | { | |
2452 | /* Note - intentional to merge messages with no newline */ | |
2453 | (*readline_begin_hook) ("%s %s\n", prompt, END_MESSAGE); | |
2454 | } | |
2455 | else if (from_tty && input_from_terminal_p ()) | |
2456 | { | |
2457 | printf_unfiltered ("%s\n%s\n", prompt, END_MESSAGE); | |
2458 | gdb_flush (gdb_stdout); | |
2459 | } | |
2460 | ||
e52bfe0c JL |
2461 | head = tail = NULL; |
2462 | old_chain = NULL; | |
172559ec JK |
2463 | |
2464 | while (1) | |
2465 | { | |
e52bfe0c | 2466 | val = read_next_line (&next); |
172559ec | 2467 | |
e52bfe0c JL |
2468 | /* Ignore blank lines or comments. */ |
2469 | if (val == nop_command) | |
2470 | continue; | |
2471 | ||
2472 | if (val == end_command) | |
2473 | { | |
2474 | ret = simple_control; | |
2475 | break; | |
2476 | } | |
2477 | ||
2478 | if (val != ok_command) | |
2479 | { | |
2480 | ret = invalid_control; | |
2481 | break; | |
2482 | } | |
2483 | ||
2484 | if (next->control_type == while_control | |
2485 | || next->control_type == if_control) | |
2486 | { | |
2487 | control_level++; | |
2488 | ret = recurse_read_control_structure (next); | |
2489 | control_level--; | |
172559ec | 2490 | |
e52bfe0c JL |
2491 | if (ret == invalid_control) |
2492 | break; | |
2493 | } | |
2494 | ||
172559ec JK |
2495 | if (tail) |
2496 | { | |
2497 | tail->next = next; | |
2498 | } | |
2499 | else | |
2500 | { | |
e52bfe0c JL |
2501 | head = next; |
2502 | old_chain = make_cleanup (free_command_lines, &head); | |
172559ec JK |
2503 | } |
2504 | tail = next; | |
2505 | } | |
2506 | ||
2507 | dont_repeat (); | |
2508 | ||
e52bfe0c JL |
2509 | if (head) |
2510 | { | |
2511 | if (ret != invalid_control) | |
2512 | { | |
2513 | discard_cleanups (old_chain); | |
e52bfe0c JL |
2514 | } |
2515 | else | |
2516 | do_cleanups (old_chain); | |
2517 | } | |
2518 | ||
41756e56 FF |
2519 | if (readline_end_hook) |
2520 | { | |
2521 | (*readline_end_hook) (); | |
2522 | } | |
2523 | return (head); | |
172559ec JK |
2524 | } |
2525 | ||
2526 | /* Free a chain of struct command_line's. */ | |
2527 | ||
2528 | void | |
2529 | free_command_lines (lptr) | |
2530 | struct command_line **lptr; | |
2531 | { | |
2532 | register struct command_line *l = *lptr; | |
2533 | register struct command_line *next; | |
e52bfe0c JL |
2534 | struct command_line **blist; |
2535 | int i; | |
172559ec JK |
2536 | |
2537 | while (l) | |
2538 | { | |
e52bfe0c JL |
2539 | if (l->body_count > 0) |
2540 | { | |
2541 | blist = l->body_list; | |
2542 | for (i = 0; i < l->body_count; i++, blist++) | |
2543 | free_command_lines (blist); | |
2544 | } | |
172559ec JK |
2545 | next = l->next; |
2546 | free (l->line); | |
2547 | free ((PTR)l); | |
2548 | l = next; | |
2549 | } | |
2550 | } | |
2551 | \f | |
2552 | /* Add an element to the list of info subcommands. */ | |
2553 | ||
2554 | void | |
2555 | add_info (name, fun, doc) | |
2556 | char *name; | |
2557 | void (*fun) PARAMS ((char *, int)); | |
2558 | char *doc; | |
2559 | { | |
2560 | add_cmd (name, no_class, fun, doc, &infolist); | |
2561 | } | |
2562 | ||
2563 | /* Add an alias to the list of info subcommands. */ | |
2564 | ||
2565 | void | |
2566 | add_info_alias (name, oldname, abbrev_flag) | |
2567 | char *name; | |
2568 | char *oldname; | |
2569 | int abbrev_flag; | |
2570 | { | |
2571 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
2572 | } | |
2573 | ||
2574 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2575 | Therefore, its own definition is called only for "info" with no args. */ | |
2576 | ||
2577 | /* ARGSUSED */ | |
2578 | static void | |
2579 | info_command (arg, from_tty) | |
2580 | char *arg; | |
2581 | int from_tty; | |
2582 | { | |
2583 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); | |
2584 | help_list (infolist, "info ", -1, gdb_stdout); | |
2585 | } | |
2586 | ||
2587 | /* The "complete" command is used by Emacs to implement completion. */ | |
2588 | ||
2589 | /* ARGSUSED */ | |
2590 | static void | |
2591 | complete_command (arg, from_tty) | |
2592 | char *arg; | |
2593 | int from_tty; | |
2594 | { | |
2595 | int i; | |
9ed8604f | 2596 | int argpoint; |
172559ec JK |
2597 | char *completion; |
2598 | ||
2599 | dont_repeat (); | |
2600 | ||
2601 | if (arg == NULL) | |
9ed8604f PS |
2602 | arg = ""; |
2603 | argpoint = strlen (arg); | |
172559ec | 2604 | |
9ed8604f | 2605 | for (completion = line_completion_function (arg, i = 0, arg, argpoint); |
172559ec | 2606 | completion; |
9ed8604f PS |
2607 | completion = line_completion_function (arg, ++i, arg, argpoint)) |
2608 | { | |
2609 | printf_unfiltered ("%s\n", completion); | |
2610 | free (completion); | |
2611 | } | |
172559ec JK |
2612 | } |
2613 | ||
2614 | /* The "show" command with no arguments shows all the settings. */ | |
2615 | ||
2616 | /* ARGSUSED */ | |
2617 | static void | |
2618 | show_command (arg, from_tty) | |
2619 | char *arg; | |
2620 | int from_tty; | |
2621 | { | |
2622 | cmd_show_list (showlist, from_tty, ""); | |
2623 | } | |
2624 | \f | |
2625 | /* Add an element to the list of commands. */ | |
2626 | ||
2627 | void | |
2628 | add_com (name, class, fun, doc) | |
2629 | char *name; | |
2630 | enum command_class class; | |
2631 | void (*fun) PARAMS ((char *, int)); | |
2632 | char *doc; | |
2633 | { | |
2634 | add_cmd (name, class, fun, doc, &cmdlist); | |
2635 | } | |
2636 | ||
2637 | /* Add an alias or abbreviation command to the list of commands. */ | |
2638 | ||
2639 | void | |
2640 | add_com_alias (name, oldname, class, abbrev_flag) | |
2641 | char *name; | |
2642 | char *oldname; | |
2643 | enum command_class class; | |
2644 | int abbrev_flag; | |
2645 | { | |
2646 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
2647 | } | |
2648 | ||
2649 | void | |
2650 | error_no_arg (why) | |
2651 | char *why; | |
2652 | { | |
2653 | error ("Argument required (%s).", why); | |
2654 | } | |
2655 | ||
2656 | /* ARGSUSED */ | |
2657 | static void | |
2658 | help_command (command, from_tty) | |
2659 | char *command; | |
2660 | int from_tty; /* Ignored */ | |
2661 | { | |
2662 | help_cmd (command, gdb_stdout); | |
2663 | } | |
2664 | \f | |
2665 | static void | |
2666 | validate_comname (comname) | |
2667 | char *comname; | |
2668 | { | |
2669 | register char *p; | |
2670 | ||
2671 | if (comname == 0) | |
2672 | error_no_arg ("name of command to define"); | |
2673 | ||
2674 | p = comname; | |
2675 | while (*p) | |
2676 | { | |
080868b4 | 2677 | if (!isalnum(*p) && *p != '-' && *p != '_') |
172559ec JK |
2678 | error ("Junk in argument list: \"%s\"", p); |
2679 | p++; | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | /* This is just a placeholder in the command data structures. */ | |
2684 | static void | |
2685 | user_defined_command (ignore, from_tty) | |
2686 | char *ignore; | |
2687 | int from_tty; | |
2688 | { | |
2689 | } | |
2690 | ||
2691 | static void | |
2692 | define_command (comname, from_tty) | |
2693 | char *comname; | |
2694 | int from_tty; | |
2695 | { | |
2696 | register struct command_line *cmds; | |
2697 | register struct cmd_list_element *c, *newc, *hookc = 0; | |
2698 | char *tem = comname; | |
41756e56 | 2699 | char tmpbuf[128]; |
172559ec JK |
2700 | #define HOOK_STRING "hook-" |
2701 | #define HOOK_LEN 5 | |
2702 | ||
2703 | validate_comname (comname); | |
2704 | ||
2705 | /* Look it up, and verify that we got an exact match. */ | |
2706 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); | |
2707 | if (c && !STREQ (comname, c->name)) | |
2708 | c = 0; | |
e52bfe0c | 2709 | |
172559ec JK |
2710 | if (c) |
2711 | { | |
2712 | if (c->class == class_user || c->class == class_alias) | |
2713 | tem = "Redefine command \"%s\"? "; | |
2714 | else | |
2715 | tem = "Really redefine built-in command \"%s\"? "; | |
2716 | if (!query (tem, c->name)) | |
2717 | error ("Command \"%s\" not redefined.", c->name); | |
2718 | } | |
2719 | ||
2720 | /* If this new command is a hook, then mark the command which it | |
2721 | is hooking. Note that we allow hooking `help' commands, so that | |
2722 | we can hook the `stop' pseudo-command. */ | |
2723 | ||
2724 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2725 | { | |
2726 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
2727 | tem = comname+HOOK_LEN; | |
2728 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2729 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) | |
2730 | hookc = 0; | |
2731 | if (!hookc) | |
2732 | { | |
2733 | warning ("Your new `%s' command does not hook any existing command.", | |
2734 | comname); | |
e3033bb0 | 2735 | if (!query ("Proceed? ")) |
172559ec JK |
2736 | error ("Not confirmed."); |
2737 | } | |
2738 | } | |
2739 | ||
2740 | comname = savestring (comname, strlen (comname)); | |
2741 | ||
e52bfe0c | 2742 | /* If the rest of the commands will be case insensitive, this one |
172559ec JK |
2743 | should behave in the same manner. */ |
2744 | for (tem = comname; *tem; tem++) | |
2745 | if (isupper(*tem)) *tem = tolower(*tem); | |
2746 | ||
e52bfe0c | 2747 | control_level = 0; |
41756e56 FF |
2748 | sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname); |
2749 | cmds = read_command_lines (tmpbuf, from_tty); | |
172559ec JK |
2750 | |
2751 | if (c && c->class == class_user) | |
2752 | free_command_lines (&c->user_commands); | |
2753 | ||
2754 | newc = add_cmd (comname, class_user, user_defined_command, | |
2755 | (c && c->class == class_user) | |
2756 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
2757 | newc->user_commands = cmds; | |
2758 | ||
2759 | /* If this new command is a hook, then mark both commands as being | |
2760 | tied. */ | |
2761 | if (hookc) | |
2762 | { | |
2763 | hookc->hook = newc; /* Target gets hooked. */ | |
2764 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2765 | } | |
2766 | } | |
2767 | ||
2768 | static void | |
2769 | document_command (comname, from_tty) | |
2770 | char *comname; | |
2771 | int from_tty; | |
2772 | { | |
2773 | struct command_line *doclines; | |
2774 | register struct cmd_list_element *c; | |
2775 | char *tem = comname; | |
41756e56 | 2776 | char tmpbuf[128]; |
172559ec JK |
2777 | |
2778 | validate_comname (comname); | |
2779 | ||
2780 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2781 | ||
2782 | if (c->class != class_user) | |
2783 | error ("Command \"%s\" is built-in.", comname); | |
2784 | ||
41756e56 FF |
2785 | sprintf (tmpbuf, "Type documentation for \"%s\".", comname); |
2786 | doclines = read_command_lines (tmpbuf, from_tty); | |
172559ec JK |
2787 | |
2788 | if (c->doc) free (c->doc); | |
2789 | ||
2790 | { | |
2791 | register struct command_line *cl1; | |
2792 | register int len = 0; | |
2793 | ||
2794 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2795 | len += strlen (cl1->line) + 1; | |
2796 | ||
2797 | c->doc = (char *) xmalloc (len + 1); | |
2798 | *c->doc = 0; | |
2799 | ||
2800 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2801 | { | |
2802 | strcat (c->doc, cl1->line); | |
2803 | if (cl1->next) | |
2804 | strcat (c->doc, "\n"); | |
2805 | } | |
2806 | } | |
2807 | ||
2808 | free_command_lines (&doclines); | |
2809 | } | |
2810 | \f | |
172559ec JK |
2811 | void |
2812 | print_gdb_version (stream) | |
2813 | GDB_FILE *stream; | |
2814 | { | |
50140ab2 FF |
2815 | /* From GNU coding standards, first line is meant to be easy for a |
2816 | program to parse, and is just canonical program name and version | |
2817 | number, which starts after last space. */ | |
2818 | ||
2819 | fprintf_filtered (stream, "GNU gdb %s\n", version); | |
2820 | ||
2821 | /* Second line is a copyright notice. */ | |
2822 | ||
bf9084c0 | 2823 | fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n"); |
50140ab2 FF |
2824 | |
2825 | /* Following the copyright is a brief statement that the program is | |
2826 | free software, that users are free to copy and change it on | |
2827 | certain conditions, that it is covered by the GNU GPL, and that | |
2828 | there is no warranty. */ | |
2829 | ||
172559ec | 2830 | fprintf_filtered (stream, "\ |
50140ab2 FF |
2831 | GDB is free software, covered by the GNU General Public License, and you are\n\ |
2832 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
59ae1b0f SS |
2833 | Type \"show copying\" to see the conditions.\n\ |
2834 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
172559ec | 2835 | |
50140ab2 | 2836 | /* After the required info we print the configuration information. */ |
172559ec | 2837 | |
50140ab2 FF |
2838 | fprintf_filtered (stream, "This GDB was configured as \""); |
2839 | if (!STREQ (host_name, target_name)) | |
2840 | { | |
2841 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
2842 | } | |
2843 | else | |
2844 | { | |
2845 | fprintf_filtered (stream, "%s", host_name); | |
2846 | } | |
2847 | fprintf_filtered (stream, "\"."); | |
172559ec JK |
2848 | } |
2849 | ||
2850 | /* ARGSUSED */ | |
2851 | static void | |
2852 | show_version (args, from_tty) | |
2853 | char *args; | |
2854 | int from_tty; | |
2855 | { | |
2856 | immediate_quit++; | |
172559ec JK |
2857 | print_gdb_version (gdb_stdout); |
2858 | printf_filtered ("\n"); | |
2859 | immediate_quit--; | |
2860 | } | |
2861 | \f | |
2862 | /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb | |
2863 | is obsolete. */ | |
2864 | ||
2865 | void | |
2866 | print_prompt () | |
2867 | { | |
2868 | printf_unfiltered ("%s", prompt); | |
2869 | gdb_flush (gdb_stdout); | |
2870 | } | |
018d76dd KS |
2871 | |
2872 | /* This replaces the above for the frontends: it returns a pointer | |
2873 | to the prompt. */ | |
2874 | char * | |
2875 | get_prompt () | |
2876 | { | |
2877 | return prompt; | |
2878 | } | |
172559ec | 2879 | \f |
018d76dd KS |
2880 | /* If necessary, make the user confirm that we should quit. Return |
2881 | non-zero if we should quit, zero if we shouldn't. */ | |
2882 | ||
2883 | int | |
2884 | quit_confirm () | |
2885 | { | |
2886 | if (inferior_pid != 0 && target_has_execution) | |
2887 | { | |
2888 | char *s; | |
2889 | ||
929db6e5 EZ |
2890 | /* This is something of a hack. But there's no reliable way to |
2891 | see if a GUI is running. The `use_windows' variable doesn't | |
2892 | cut it. */ | |
2893 | if (init_ui_hook) | |
2894 | s = "A debugging session is active.\nDo you still want to close the debugger?"; | |
2895 | else if (attach_flag) | |
018d76dd KS |
2896 | s = "The program is running. Quit anyway (and detach it)? "; |
2897 | else | |
2898 | s = "The program is running. Exit anyway? "; | |
2899 | ||
2900 | if (! query (s)) | |
2901 | return 0; | |
2902 | } | |
2903 | ||
2904 | return 1; | |
2905 | } | |
2906 | ||
2907 | /* Quit without asking for confirmation. */ | |
2908 | ||
172559ec | 2909 | void |
018d76dd | 2910 | quit_force (args, from_tty) |
172559ec JK |
2911 | char *args; |
2912 | int from_tty; | |
2913 | { | |
641c7fdf SS |
2914 | int exit_code = 0; |
2915 | ||
2916 | /* An optional expression may be used to cause gdb to terminate with the | |
2917 | value of that expression. */ | |
2918 | if (args) | |
2919 | { | |
2920 | value_ptr val = parse_and_eval (args); | |
2921 | ||
2922 | exit_code = (int) value_as_long (val); | |
2923 | } | |
2924 | ||
172559ec JK |
2925 | if (inferior_pid != 0 && target_has_execution) |
2926 | { | |
2927 | if (attach_flag) | |
018d76dd | 2928 | target_detach (args, from_tty); |
172559ec | 2929 | else |
018d76dd | 2930 | target_kill (); |
172559ec | 2931 | } |
018d76dd | 2932 | |
172559ec JK |
2933 | /* UDI wants this, to kill the TIP. */ |
2934 | target_close (1); | |
2935 | ||
2936 | /* Save the history information if it is appropriate to do so. */ | |
2937 | if (write_history_p && history_filename) | |
2938 | write_history (history_filename); | |
2939 | ||
16a43bf4 DP |
2940 | do_final_cleanups(ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
2941 | ||
641c7fdf | 2942 | exit (exit_code); |
172559ec JK |
2943 | } |
2944 | ||
018d76dd KS |
2945 | /* Handle the quit command. */ |
2946 | ||
2947 | void | |
2948 | quit_command (args, from_tty) | |
2949 | char *args; | |
2950 | int from_tty; | |
2951 | { | |
2952 | if (! quit_confirm ()) | |
2953 | error ("Not confirmed."); | |
2954 | quit_force (args, from_tty); | |
2955 | } | |
2956 | ||
172559ec JK |
2957 | /* Returns whether GDB is running on a terminal and whether the user |
2958 | desires that questions be asked of them on that terminal. */ | |
2959 | ||
2960 | int | |
2961 | input_from_terminal_p () | |
2962 | { | |
2963 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
2964 | } | |
2965 | \f | |
2966 | /* ARGSUSED */ | |
2967 | static void | |
2968 | pwd_command (args, from_tty) | |
2969 | char *args; | |
2970 | int from_tty; | |
2971 | { | |
2972 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
b7ec5b8d | 2973 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
172559ec | 2974 | |
b7ec5b8d | 2975 | if (!STREQ (gdb_dirbuf, current_directory)) |
172559ec | 2976 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", |
b7ec5b8d | 2977 | current_directory, gdb_dirbuf); |
172559ec JK |
2978 | else |
2979 | printf_unfiltered ("Working directory %s.\n", current_directory); | |
2980 | } | |
2981 | ||
2982 | void | |
2983 | cd_command (dir, from_tty) | |
2984 | char *dir; | |
2985 | int from_tty; | |
2986 | { | |
2987 | int len; | |
2988 | /* Found something other than leading repetitions of "/..". */ | |
2989 | int found_real_path; | |
2990 | char *p; | |
2991 | ||
2992 | /* If the new directory is absolute, repeat is a no-op; if relative, | |
2993 | repeat might be useful but is more likely to be a mistake. */ | |
2994 | dont_repeat (); | |
2995 | ||
2996 | if (dir == 0) | |
2997 | error_no_arg ("new working directory"); | |
2998 | ||
2999 | dir = tilde_expand (dir); | |
3000 | make_cleanup (free, dir); | |
3001 | ||
3002 | if (chdir (dir) < 0) | |
3003 | perror_with_name (dir); | |
3004 | ||
3005 | len = strlen (dir); | |
2e1cc801 SS |
3006 | dir = savestring (dir, len - (len > 1 && SLASH_P(dir[len-1]))); |
3007 | if (ROOTED_P(dir)) | |
172559ec JK |
3008 | current_directory = dir; |
3009 | else | |
3010 | { | |
2e1cc801 | 3011 | if (SLASH_P (current_directory[0]) && current_directory[1] == '\0') |
172559ec JK |
3012 | current_directory = concat (current_directory, dir, NULL); |
3013 | else | |
2e1cc801 | 3014 | current_directory = concat (current_directory, SLASH_STRING, dir, NULL); |
172559ec JK |
3015 | free (dir); |
3016 | } | |
3017 | ||
3018 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
3019 | ||
3020 | found_real_path = 0; | |
3021 | for (p = current_directory; *p;) | |
3022 | { | |
2e1cc801 | 3023 | if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2]))) |
172559ec | 3024 | strcpy (p, p + 2); |
2e1cc801 SS |
3025 | else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.' |
3026 | && (p[3] == 0 || SLASH_P (p[3]))) | |
172559ec JK |
3027 | { |
3028 | if (found_real_path) | |
3029 | { | |
3030 | /* Search backwards for the directory just before the "/.." | |
3031 | and obliterate it and the "/..". */ | |
3032 | char *q = p; | |
2e1cc801 | 3033 | while (q != current_directory && ! SLASH_P (q[-1])) |
172559ec JK |
3034 | --q; |
3035 | ||
3036 | if (q == current_directory) | |
3037 | /* current_directory is | |
3038 | a relative pathname ("can't happen"--leave it alone). */ | |
3039 | ++p; | |
3040 | else | |
3041 | { | |
3042 | strcpy (q - 1, p + 3); | |
3043 | p = q - 1; | |
3044 | } | |
3045 | } | |
3046 | else | |
3047 | /* We are dealing with leading repetitions of "/..", for example | |
3048 | "/../..", which is the Mach super-root. */ | |
3049 | p += 3; | |
3050 | } | |
3051 | else | |
3052 | { | |
3053 | found_real_path = 1; | |
3054 | ++p; | |
3055 | } | |
3056 | } | |
3057 | ||
3058 | forget_cached_source_info (); | |
3059 | ||
3060 | if (from_tty) | |
3061 | pwd_command ((char *) 0, 1); | |
3062 | } | |
3063 | \f | |
3064 | struct source_cleanup_lines_args { | |
3065 | int old_line; | |
3066 | char *old_file; | |
3067 | char *old_pre_error; | |
3068 | char *old_error_pre_print; | |
3069 | }; | |
3070 | ||
3071 | static void | |
3072 | source_cleanup_lines (args) | |
3073 | PTR args; | |
3074 | { | |
3075 | struct source_cleanup_lines_args *p = | |
3076 | (struct source_cleanup_lines_args *)args; | |
3077 | source_line_number = p->old_line; | |
3078 | source_file_name = p->old_file; | |
3079 | source_pre_error = p->old_pre_error; | |
3080 | error_pre_print = p->old_error_pre_print; | |
3081 | } | |
3082 | ||
3083 | /* ARGSUSED */ | |
3084 | void | |
3085 | source_command (args, from_tty) | |
3086 | char *args; | |
3087 | int from_tty; | |
3088 | { | |
3089 | FILE *stream; | |
3090 | struct cleanup *old_cleanups; | |
3091 | char *file = args; | |
3092 | struct source_cleanup_lines_args old_lines; | |
3093 | int needed_length; | |
3094 | ||
3095 | if (file == NULL) | |
3096 | { | |
3097 | error ("source command requires pathname of file to source."); | |
3098 | } | |
3099 | ||
3100 | file = tilde_expand (file); | |
3101 | old_cleanups = make_cleanup (free, file); | |
3102 | ||
3103 | stream = fopen (file, FOPEN_RT); | |
9e77e83d SG |
3104 | if (!stream) |
3105 | if (from_tty) | |
3106 | perror_with_name (file); | |
3107 | else | |
3108 | return; | |
172559ec JK |
3109 | |
3110 | make_cleanup (fclose, stream); | |
3111 | ||
3112 | old_lines.old_line = source_line_number; | |
3113 | old_lines.old_file = source_file_name; | |
3114 | old_lines.old_pre_error = source_pre_error; | |
3115 | old_lines.old_error_pre_print = error_pre_print; | |
3116 | make_cleanup (source_cleanup_lines, &old_lines); | |
3117 | source_line_number = 0; | |
3118 | source_file_name = file; | |
3119 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
3120 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
3121 | make_cleanup (free, source_pre_error); | |
3122 | /* This will get set every time we read a line. So it won't stay "" for | |
3123 | long. */ | |
3124 | error_pre_print = ""; | |
3125 | ||
3126 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
3127 | if (source_error_allocated < needed_length) | |
3128 | { | |
3129 | source_error_allocated *= 2; | |
3130 | if (source_error_allocated < needed_length) | |
3131 | source_error_allocated = needed_length; | |
3132 | if (source_error == NULL) | |
3133 | source_error = xmalloc (source_error_allocated); | |
3134 | else | |
3135 | source_error = xrealloc (source_error, source_error_allocated); | |
3136 | } | |
3137 | ||
3138 | read_command_file (stream); | |
3139 | ||
3140 | do_cleanups (old_cleanups); | |
3141 | } | |
3142 | ||
3143 | /* ARGSUSED */ | |
3144 | static void | |
3145 | echo_command (text, from_tty) | |
3146 | char *text; | |
3147 | int from_tty; | |
3148 | { | |
3149 | char *p = text; | |
3150 | register int c; | |
3151 | ||
3152 | if (text) | |
3153 | while ((c = *p++) != '\0') | |
3154 | { | |
3155 | if (c == '\\') | |
3156 | { | |
3157 | /* \ at end of argument is used after spaces | |
3158 | so they won't be lost. */ | |
3159 | if (*p == 0) | |
3160 | return; | |
3161 | ||
3162 | c = parse_escape (&p); | |
3163 | if (c >= 0) | |
3164 | printf_filtered ("%c", c); | |
3165 | } | |
3166 | else | |
3167 | printf_filtered ("%c", c); | |
3168 | } | |
3169 | ||
3170 | /* Force this output to appear now. */ | |
3171 | wrap_here (""); | |
3172 | gdb_flush (gdb_stdout); | |
3173 | } | |
3174 | ||
cd10c7e3 SG |
3175 | /* ARGSUSED */ |
3176 | static void | |
3177 | dont_repeat_command (ignored, from_tty) | |
3178 | char *ignored; | |
3179 | int from_tty; | |
3180 | { | |
3181 | *line = 0; /* Can't call dont_repeat here because we're not | |
3182 | necessarily reading from stdin. */ | |
3183 | } | |
b8176214 | 3184 | \f |
b8176214 ILT |
3185 | /* Functions to manipulate the endianness of the target. */ |
3186 | ||
95edd7c1 | 3187 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b8176214 ILT |
3188 | #ifndef TARGET_BYTE_ORDER_DEFAULT |
3189 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN | |
3190 | #endif | |
b8176214 | 3191 | int target_byte_order = TARGET_BYTE_ORDER_DEFAULT; |
750b7942 | 3192 | int target_byte_order_auto = 1; |
95edd7c1 AC |
3193 | #else |
3194 | static int target_byte_order_auto = 0; | |
3195 | #endif | |
b83ed019 | 3196 | |
b8176214 ILT |
3197 | /* Called if the user enters ``set endian'' without an argument. */ |
3198 | static void | |
3199 | set_endian (args, from_tty) | |
3200 | char *args; | |
3201 | int from_tty; | |
3202 | { | |
b83ed019 | 3203 | printf_unfiltered ("\"set endian\" must be followed by \"auto\", \"big\" or \"little\".\n"); |
b8176214 ILT |
3204 | show_endian (args, from_tty); |
3205 | } | |
3206 | ||
3207 | /* Called by ``set endian big''. */ | |
3208 | static void | |
3209 | set_endian_big (args, from_tty) | |
3210 | char *args; | |
3211 | int from_tty; | |
3212 | { | |
95edd7c1 | 3213 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b8176214 | 3214 | target_byte_order = BIG_ENDIAN; |
b83ed019 | 3215 | target_byte_order_auto = 0; |
95edd7c1 AC |
3216 | #else |
3217 | printf_unfiltered ("Byte order is not selectable."); | |
3218 | show_endian (args, from_tty); | |
3219 | #endif | |
b8176214 ILT |
3220 | } |
3221 | ||
3222 | /* Called by ``set endian little''. */ | |
3223 | static void | |
3224 | set_endian_little (args, from_tty) | |
3225 | char *args; | |
3226 | int from_tty; | |
3227 | { | |
95edd7c1 | 3228 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b8176214 | 3229 | target_byte_order = LITTLE_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 | |
b83ed019 ILT |
3235 | } |
3236 | ||
3237 | /* Called by ``set endian auto''. */ | |
3238 | static void | |
3239 | set_endian_auto (args, from_tty) | |
3240 | char *args; | |
3241 | int from_tty; | |
3242 | { | |
95edd7c1 | 3243 | #ifdef TARGET_BYTE_ORDER_SELECTABLE |
b83ed019 | 3244 | target_byte_order_auto = 1; |
95edd7c1 AC |
3245 | #else |
3246 | printf_unfiltered ("Byte order is not selectable."); | |
3247 | show_endian (args, from_tty); | |
3248 | #endif | |
b8176214 ILT |
3249 | } |
3250 | ||
3251 | /* Called by ``show endian''. */ | |
3252 | static void | |
3253 | show_endian (args, from_tty) | |
3254 | char *args; | |
3255 | int from_tty; | |
3256 | { | |
b83ed019 ILT |
3257 | const char *msg = |
3258 | (target_byte_order_auto | |
3259 | ? "The target endianness is set automatically (currently %s endian)\n" | |
3260 | : "The target is assumed to be %s endian\n"); | |
032f80d8 | 3261 | printf_unfiltered ((char *) msg, TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); |
b8176214 ILT |
3262 | } |
3263 | ||
b83ed019 ILT |
3264 | /* Set the endianness from a BFD. */ |
3265 | void | |
3266 | set_endian_from_file (abfd) | |
3267 | bfd *abfd; | |
3268 | { | |
3269 | #ifdef TARGET_BYTE_ORDER_SELECTABLE | |
3270 | int want; | |
3271 | ||
3ecd62ca | 3272 | if (bfd_big_endian (abfd)) |
b83ed019 ILT |
3273 | want = BIG_ENDIAN; |
3274 | else | |
3275 | want = LITTLE_ENDIAN; | |
3276 | if (target_byte_order_auto) | |
3277 | target_byte_order = want; | |
3278 | else if (target_byte_order != want) | |
3279 | warning ("%s endian file does not match %s endian target.", | |
3280 | want == BIG_ENDIAN ? "big" : "little", | |
3281 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
3282 | ||
3283 | #else /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */ | |
3284 | ||
3ecd62ca | 3285 | if (bfd_big_endian (abfd) |
b83ed019 ILT |
3286 | ? TARGET_BYTE_ORDER != BIG_ENDIAN |
3287 | : TARGET_BYTE_ORDER == BIG_ENDIAN) | |
3288 | warning ("%s endian file does not match %s endian target.", | |
3ecd62ca | 3289 | bfd_big_endian (abfd) ? "big" : "little", |
b83ed019 ILT |
3290 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); |
3291 | ||
3292 | #endif /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */ | |
3293 | } | |
172559ec | 3294 | \f |
d0aba53f AC |
3295 | /* Functions to manipulate the architecture of the target */ |
3296 | ||
3297 | int target_architecture_auto = 1; | |
3298 | extern const bfd_arch_info_type bfd_default_arch_struct; | |
3299 | const bfd_arch_info_type *target_architecture = &bfd_default_arch_struct; | |
3300 | int (*target_architecture_hook) PARAMS ((const bfd_arch_info_type *ap)); | |
3301 | ||
ee36741e AC |
3302 | static void |
3303 | set_arch (arch) | |
3304 | const bfd_arch_info_type *arch; | |
3305 | { | |
3306 | /* FIXME: Is it compatible with gdb? */ | |
3307 | /* Check with the target on the setting */ | |
3308 | if (target_architecture_hook != NULL | |
3309 | && !target_architecture_hook (arch)) | |
3310 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
3311 | arch->printable_name); | |
3312 | else | |
3313 | { | |
3314 | target_architecture_auto = 0; | |
3315 | target_architecture = arch; | |
3316 | } | |
3317 | } | |
3318 | ||
3319 | ||
3320 | /* Called if the user enters ``set architecture'' with or without an | |
3321 | argument. */ | |
3322 | static void | |
d0aba53f AC |
3323 | set_architecture (args, from_tty) |
3324 | char *args; | |
3325 | int from_tty; | |
3326 | { | |
3327 | if (args == NULL) | |
3328 | { | |
3329 | printf_unfiltered ("\"set architecture\" must be followed by \"auto\" or an architecture name.\n"); | |
3330 | } | |
3331 | else if (strcmp (args, "auto") == 0) | |
3332 | { | |
3333 | target_architecture_auto = 1; | |
3334 | } | |
3335 | else | |
3336 | { | |
3337 | const bfd_arch_info_type *arch = bfd_scan_arch (args); | |
3338 | if (arch != NULL) | |
ee36741e | 3339 | set_arch (arch); |
d0aba53f | 3340 | else |
ee36741e | 3341 | printf_unfiltered ("Architecture `%s' not reconized.\n", args); |
d0aba53f AC |
3342 | } |
3343 | } | |
3344 | ||
3345 | /* Called if the user enters ``show architecture'' without an argument. */ | |
3346 | static void | |
3347 | show_architecture (args, from_tty) | |
3348 | char *args; | |
3349 | int from_tty; | |
3350 | { | |
3351 | const char *arch; | |
3352 | arch = target_architecture->printable_name; | |
3353 | if (target_architecture_auto) | |
3354 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
3355 | else | |
3356 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
3357 | } | |
3358 | ||
3359 | /* Called if the user enters ``info architecture'' without an argument. */ | |
3360 | static void | |
3361 | info_architecture (args, from_tty) | |
3362 | char *args; | |
3363 | int from_tty; | |
3364 | { | |
3365 | enum bfd_architecture a; | |
3366 | printf_filtered ("Available architectures are:\n"); | |
3367 | for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++) | |
3368 | { | |
3369 | const bfd_arch_info_type *ap = bfd_lookup_arch (a, 0); | |
3370 | if (ap != NULL) | |
3371 | { | |
3372 | do | |
3373 | { | |
3374 | printf_filtered (" %s", ap->printable_name); | |
3375 | ap = ap->next; | |
3376 | } | |
3377 | while (ap != NULL); | |
3378 | printf_filtered ("\n"); | |
3379 | } | |
3380 | } | |
3381 | } | |
3382 | ||
ee36741e AC |
3383 | /* Set the architecture from arch/machine */ |
3384 | void | |
3385 | set_architecture_from_arch_mach (arch, mach) | |
3386 | enum bfd_architecture arch; | |
3387 | unsigned long mach; | |
3388 | { | |
3389 | const bfd_arch_info_type *wanted = bfd_lookup_arch (arch, mach); | |
3390 | if (wanted != NULL) | |
3391 | set_arch (wanted); | |
3392 | else | |
3393 | fatal ("hardwired architecture/machine not reconized"); | |
3394 | } | |
3395 | ||
3396 | ||
d0aba53f AC |
3397 | /* Set the architecture from a BFD */ |
3398 | void | |
3399 | set_architecture_from_file (abfd) | |
3400 | bfd *abfd; | |
3401 | { | |
3402 | const bfd_arch_info_type *wanted = bfd_get_arch_info (abfd); | |
3403 | if (target_architecture_auto) | |
3404 | { | |
3405 | if (target_architecture_hook != NULL | |
3406 | && !target_architecture_hook (wanted)) | |
3407 | warning ("Target may not support %s architecture", | |
3408 | wanted->printable_name); | |
3409 | target_architecture = wanted; | |
3410 | } | |
3411 | else if (wanted != target_architecture) | |
3412 | { | |
3413 | warning ("%s architecture file may be incompatible with %s target.", | |
3414 | wanted->printable_name, | |
3415 | target_architecture->printable_name); | |
3416 | } | |
3417 | } | |
3418 | \f | |
172559ec JK |
3419 | /* Functions to manipulate command line editing control variables. */ |
3420 | ||
3421 | /* Number of commands to print in each call to show_commands. */ | |
3422 | #define Hist_print 10 | |
3423 | static void | |
3424 | show_commands (args, from_tty) | |
3425 | char *args; | |
3426 | int from_tty; | |
3427 | { | |
3428 | /* Index for history commands. Relative to history_base. */ | |
3429 | int offset; | |
3430 | ||
3431 | /* Number of the history entry which we are planning to display next. | |
3432 | Relative to history_base. */ | |
3433 | static int num = 0; | |
3434 | ||
3435 | /* The first command in the history which doesn't exist (i.e. one more | |
3436 | than the number of the last command). Relative to history_base. */ | |
3437 | int hist_len; | |
3438 | ||
3439 | extern HIST_ENTRY *history_get PARAMS ((int)); | |
3440 | ||
3441 | /* Print out some of the commands from the command history. */ | |
3442 | /* First determine the length of the history list. */ | |
3443 | hist_len = history_size; | |
3444 | for (offset = 0; offset < history_size; offset++) | |
3445 | { | |
3446 | if (!history_get (history_base + offset)) | |
3447 | { | |
3448 | hist_len = offset; | |
3449 | break; | |
3450 | } | |
3451 | } | |
3452 | ||
3453 | if (args) | |
3454 | { | |
3455 | if (args[0] == '+' && args[1] == '\0') | |
3456 | /* "info editing +" should print from the stored position. */ | |
3457 | ; | |
3458 | else | |
3459 | /* "info editing <exp>" should print around command number <exp>. */ | |
3460 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
3461 | } | |
3462 | /* "show commands" means print the last Hist_print commands. */ | |
3463 | else | |
3464 | { | |
3465 | num = hist_len - Hist_print; | |
3466 | } | |
3467 | ||
3468 | if (num < 0) | |
3469 | num = 0; | |
3470 | ||
3471 | /* If there are at least Hist_print commands, we want to display the last | |
3472 | Hist_print rather than, say, the last 6. */ | |
3473 | if (hist_len - num < Hist_print) | |
3474 | { | |
3475 | num = hist_len - Hist_print; | |
3476 | if (num < 0) | |
3477 | num = 0; | |
3478 | } | |
3479 | ||
3480 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
3481 | { | |
3482 | printf_filtered ("%5d %s\n", history_base + offset, | |
3483 | (history_get (history_base + offset))->line); | |
3484 | } | |
3485 | ||
3486 | /* The next command we want to display is the next one that we haven't | |
3487 | displayed yet. */ | |
3488 | num += Hist_print; | |
e52bfe0c | 3489 | |
172559ec JK |
3490 | /* If the user repeats this command with return, it should do what |
3491 | "show commands +" does. This is unnecessary if arg is null, | |
3492 | because "show commands +" is not useful after "show commands". */ | |
3493 | if (from_tty && args) | |
3494 | { | |
3495 | args[0] = '+'; | |
3496 | args[1] = '\0'; | |
3497 | } | |
3498 | } | |
3499 | ||
3500 | /* Called by do_setshow_command. */ | |
3501 | /* ARGSUSED */ | |
3502 | static void | |
3503 | set_history_size_command (args, from_tty, c) | |
3504 | char *args; | |
3505 | int from_tty; | |
3506 | struct cmd_list_element *c; | |
3507 | { | |
3508 | if (history_size == INT_MAX) | |
3509 | unstifle_history (); | |
3510 | else if (history_size >= 0) | |
3511 | stifle_history (history_size); | |
3512 | else | |
3513 | { | |
3514 | history_size = INT_MAX; | |
3515 | error ("History size must be non-negative"); | |
3516 | } | |
3517 | } | |
3518 | ||
3519 | /* ARGSUSED */ | |
3520 | static void | |
3521 | set_history (args, from_tty) | |
3522 | char *args; | |
3523 | int from_tty; | |
3524 | { | |
3525 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
3526 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
3527 | } | |
3528 | ||
3529 | /* ARGSUSED */ | |
3530 | static void | |
3531 | show_history (args, from_tty) | |
3532 | char *args; | |
3533 | int from_tty; | |
3534 | { | |
3535 | cmd_show_list (showhistlist, from_tty, ""); | |
3536 | } | |
3537 | ||
3538 | int info_verbose = 0; /* Default verbose msgs off */ | |
3539 | ||
3540 | /* Called by do_setshow_command. An elaborate joke. */ | |
3541 | /* ARGSUSED */ | |
e52bfe0c | 3542 | static void |
172559ec JK |
3543 | set_verbose (args, from_tty, c) |
3544 | char *args; | |
3545 | int from_tty; | |
3546 | struct cmd_list_element *c; | |
3547 | { | |
3548 | char *cmdname = "verbose"; | |
3549 | struct cmd_list_element *showcmd; | |
e52bfe0c | 3550 | |
172559ec JK |
3551 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); |
3552 | ||
3553 | if (info_verbose) | |
3554 | { | |
3555 | c->doc = "Set verbose printing of informational messages."; | |
3556 | showcmd->doc = "Show verbose printing of informational messages."; | |
3557 | } | |
3558 | else | |
3559 | { | |
3560 | c->doc = "Set verbosity."; | |
3561 | showcmd->doc = "Show verbosity."; | |
3562 | } | |
3563 | } | |
3564 | ||
3565 | static void | |
3566 | float_handler (signo) | |
3567 | int signo; | |
3568 | { | |
3569 | /* This message is based on ANSI C, section 4.7. Note that integer | |
3570 | divide by zero causes this, so "float" is a misnomer. */ | |
3571 | signal (SIGFPE, float_handler); | |
3572 | error ("Erroneous arithmetic operation."); | |
3573 | } | |
3574 | ||
172559ec JK |
3575 | \f |
3576 | static void | |
3577 | init_cmd_lists () | |
3578 | { | |
3579 | cmdlist = NULL; | |
3580 | infolist = NULL; | |
3581 | enablelist = NULL; | |
3582 | disablelist = NULL; | |
3583 | deletelist = NULL; | |
3584 | enablebreaklist = NULL; | |
3585 | setlist = NULL; | |
3586 | unsetlist = NULL; | |
3587 | showlist = NULL; | |
b8176214 | 3588 | endianlist = NULL; |
172559ec JK |
3589 | sethistlist = NULL; |
3590 | showhistlist = NULL; | |
3591 | unsethistlist = NULL; | |
3592 | #if MAINTENANCE_CMDS | |
3593 | maintenancelist = NULL; | |
3594 | maintenanceinfolist = NULL; | |
3595 | maintenanceprintlist = NULL; | |
3596 | #endif | |
3597 | setprintlist = NULL; | |
3598 | showprintlist = NULL; | |
3599 | setchecklist = NULL; | |
3600 | showchecklist = NULL; | |
3601 | } | |
3602 | ||
3603 | /* Init the history buffer. Note that we are called after the init file(s) | |
3604 | * have been read so that the user can change the history file via his | |
3605 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
3606 | * overrides all of this. | |
3607 | */ | |
3608 | ||
3609 | void | |
3610 | init_history() | |
3611 | { | |
3612 | char *tmpenv; | |
3613 | ||
3614 | tmpenv = getenv ("HISTSIZE"); | |
3615 | if (tmpenv) | |
3616 | history_size = atoi (tmpenv); | |
3617 | else if (!history_size) | |
3618 | history_size = 256; | |
3619 | ||
3620 | stifle_history (history_size); | |
3621 | ||
3622 | tmpenv = getenv ("GDBHISTFILE"); | |
3623 | if (tmpenv) | |
3624 | history_filename = savestring (tmpenv, strlen(tmpenv)); | |
3625 | else if (!history_filename) { | |
3626 | /* We include the current directory so that if the user changes | |
3627 | directories the file written will be the same as the one | |
3628 | that was read. */ | |
3629 | history_filename = concat (current_directory, "/.gdb_history", NULL); | |
3630 | } | |
3631 | read_history (history_filename); | |
3632 | } | |
3633 | ||
3634 | static void | |
3635 | init_main () | |
3636 | { | |
3637 | struct cmd_list_element *c; | |
e52bfe0c | 3638 | |
b8176214 ILT |
3639 | add_prefix_cmd ("endian", class_support, set_endian, |
3640 | "Set endianness of target.", | |
3641 | &endianlist, "set endian ", 0, &setlist); | |
3642 | add_cmd ("big", class_support, set_endian_big, | |
3643 | "Set target as being big endian.", &endianlist); | |
3644 | add_cmd ("little", class_support, set_endian_little, | |
3645 | "Set target as being little endian.", &endianlist); | |
b83ed019 ILT |
3646 | add_cmd ("auto", class_support, set_endian_auto, |
3647 | "Select target endianness automatically.", &endianlist); | |
b8176214 ILT |
3648 | add_cmd ("endian", class_support, show_endian, |
3649 | "Show endianness of target.", &showlist); | |
3650 | ||
d0aba53f AC |
3651 | add_cmd ("architecture", class_support, set_architecture, |
3652 | "Set architecture of target.", &setlist); | |
cd2c720a | 3653 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
d0aba53f AC |
3654 | add_cmd ("architecture", class_support, show_architecture, |
3655 | "Show architecture of target.", &showlist); | |
3656 | add_cmd ("architecture", class_support, info_architecture, | |
3657 | "List supported target architectures", &infolist); | |
3658 | ||
3659 | ||
172559ec JK |
3660 | #ifdef DEFAULT_PROMPT |
3661 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
3662 | #else | |
3663 | prompt = savestring ("(gdb) ", 6); | |
3664 | #endif | |
3665 | ||
3666 | /* Set the important stuff up for command editing. */ | |
3667 | command_editing_p = 1; | |
3668 | history_expansion_p = 0; | |
3669 | write_history_p = 0; | |
e52bfe0c | 3670 | |
172559ec | 3671 | /* Setup important stuff for command line editing. */ |
9ed8604f | 3672 | rl_completion_entry_function = (int (*)()) readline_line_completion_function; |
172559ec JK |
3673 | rl_completer_word_break_characters = gdb_completer_word_break_characters; |
3674 | rl_completer_quote_characters = gdb_completer_quote_characters; | |
3675 | rl_readline_name = "gdb"; | |
3676 | ||
3677 | /* Define the classes of commands. | |
3678 | They will appear in the help list in the reverse of this order. */ | |
3679 | ||
3680 | add_cmd ("internals", class_maintenance, NO_FUNCTION, | |
3681 | "Maintenance commands.\n\ | |
3682 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
3683 | These commands are subject to frequent change, and may not be as\n\ | |
3684 | well documented as user commands.", | |
3685 | &cmdlist); | |
3686 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); | |
3687 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
3688 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
3689 | The commands in this class are those defined by the user.\n\ | |
3690 | Use the \"define\" command to define a command.", &cmdlist); | |
3691 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
3692 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
3693 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
3694 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
3695 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
3696 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
3697 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
3698 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
3699 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
3700 | Variable lookups are done with respect to the selected frame.\n\ | |
3701 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
3702 | The commands below can be used to select other frames by number or address.", | |
3703 | &cmdlist); | |
3704 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
3705 | ||
3706 | add_com ("pwd", class_files, pwd_command, | |
3707 | "Print working directory. This is used for your program as well."); | |
3708 | c = add_cmd ("cd", class_files, cd_command, | |
3709 | "Set working directory to DIR for debugger and program being debugged.\n\ | |
3710 | The change does not take effect for the program being debugged\n\ | |
3711 | until the next time it is started.", &cmdlist); | |
3712 | c->completer = filename_completer; | |
3713 | ||
3714 | add_show_from_set | |
3715 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
3716 | "Set gdb's prompt", | |
3717 | &setlist), | |
3718 | &showlist); | |
e52bfe0c | 3719 | |
172559ec JK |
3720 | add_com ("echo", class_support, echo_command, |
3721 | "Print a constant string. Give string as argument.\n\ | |
3722 | C escape sequences may be used in the argument.\n\ | |
3723 | No newline is added at the end of the argument;\n\ | |
3724 | use \"\\n\" if you want a newline to be printed.\n\ | |
3725 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
3726 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
3727 | to be printed or after trailing whitespace."); | |
3728 | add_com ("document", class_support, document_command, | |
3729 | "Document a user-defined command.\n\ | |
3730 | Give command name as argument. Give documentation on following lines.\n\ | |
3731 | End with a line of just \"end\"."); | |
3732 | add_com ("define", class_support, define_command, | |
3733 | "Define a new command name. Command name is argument.\n\ | |
3734 | Definition appears on following lines, one command per line.\n\ | |
3735 | End with a line of just \"end\".\n\ | |
3736 | Use the \"document\" command to give documentation for the new command.\n\ | |
59528079 | 3737 | Commands defined in this way may have up to ten arguments."); |
172559ec JK |
3738 | |
3739 | #ifdef __STDC__ | |
3740 | c = add_cmd ("source", class_support, source_command, | |
3741 | "Read commands from a file named FILE.\n\ | |
3742 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
3743 | when gdb is started.", &cmdlist); | |
3744 | #else | |
3745 | /* Punt file name, we can't help it easily. */ | |
3746 | c = add_cmd ("source", class_support, source_command, | |
3747 | "Read commands from a file named FILE.\n\ | |
3748 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
3749 | when gdb is started.", &cmdlist); | |
3750 | #endif | |
3751 | c->completer = filename_completer; | |
3752 | ||
3753 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
3754 | add_com ("help", class_support, help_command, "Print list of commands."); | |
3755 | add_com_alias ("q", "quit", class_support, 1); | |
3756 | add_com_alias ("h", "help", class_support, 1); | |
3757 | ||
cd10c7e3 SG |
3758 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ |
3759 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
3760 | hitting return."); | |
172559ec JK |
3761 | |
3762 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
3763 | "Set ", | |
3764 | &setlist), | |
3765 | add_show_from_set (c, &showlist); | |
3766 | c->function.sfunc = set_verbose; | |
3767 | set_verbose (NULL, 0, c); | |
e52bfe0c | 3768 | |
172559ec JK |
3769 | add_show_from_set |
3770 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
3771 | "Set editing of command lines as they are typed.\n\ | |
6a85a617 | 3772 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ |
172559ec JK |
3773 | Without an argument, command line editing is enabled. To edit, use\n\ |
3774 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
3775 | &showlist); | |
3776 | ||
3777 | add_prefix_cmd ("history", class_support, set_history, | |
3778 | "Generic command for setting command history parameters.", | |
3779 | &sethistlist, "set history ", 0, &setlist); | |
3780 | add_prefix_cmd ("history", class_support, show_history, | |
3781 | "Generic command for showing command history parameters.", | |
3782 | &showhistlist, "show history ", 0, &showlist); | |
3783 | ||
3784 | add_show_from_set | |
3785 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
3786 | "Set history expansion on command input.\n\ | |
3787 | Without an argument, history expansion is enabled.", &sethistlist), | |
3788 | &showhistlist); | |
3789 | ||
3790 | add_show_from_set | |
3791 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, | |
3792 | "Set saving of the history record on exit.\n\ | |
6a85a617 | 3793 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
172559ec JK |
3794 | Without an argument, saving is enabled.", &sethistlist), |
3795 | &showhistlist); | |
3796 | ||
3797 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, | |
3798 | "Set the size of the command history, \n\ | |
3799 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
3800 | add_show_from_set (c, &showhistlist); | |
3801 | c->function.sfunc = set_history_size_command; | |
3802 | ||
3803 | add_show_from_set | |
3804 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
3805 | "Set the filename in which to record the command history\n\ | |
3806 | (the list of previous commands of which a record is kept).", &sethistlist), | |
3807 | &showhistlist); | |
3808 | ||
3809 | add_show_from_set | |
3810 | (add_set_cmd ("confirm", class_support, var_boolean, | |
3811 | (char *)&caution, | |
3812 | "Set whether to confirm potentially dangerous operations.", | |
3813 | &setlist), | |
3814 | &showlist); | |
3815 | ||
3816 | add_prefix_cmd ("info", class_info, info_command, | |
3817 | "Generic command for showing things about the program being debugged.", | |
3818 | &infolist, "info ", 0, &cmdlist); | |
3819 | add_com_alias ("i", "info", class_info, 1); | |
3820 | ||
3821 | add_com ("complete", class_obscure, complete_command, | |
3822 | "List the completions for the rest of the line as a command."); | |
3823 | ||
3824 | add_prefix_cmd ("show", class_info, show_command, | |
3825 | "Generic command for showing things about the debugger.", | |
3826 | &showlist, "show ", 0, &cmdlist); | |
3827 | /* Another way to get at the same thing. */ | |
3828 | add_info ("set", show_command, "Show all GDB settings."); | |
3829 | ||
3830 | add_cmd ("commands", no_class, show_commands, | |
943b7032 | 3831 | "Show the history of commands you typed.\n\ |
172559ec JK |
3832 | You can supply a command number to start with, or a `+' to start after\n\ |
3833 | the previous command number shown.", | |
3834 | &showlist); | |
3835 | ||
3836 | add_cmd ("version", no_class, show_version, | |
3837 | "Show what version of GDB this is.", &showlist); | |
3838 | ||
e52bfe0c JL |
3839 | add_com ("while", class_support, while_command, |
3840 | "Execute nested commands WHILE the conditional expression is non zero.\n\ | |
943b7032 PS |
3841 | The conditional expression must follow the word `while' and must in turn be\n\ |
3842 | followed by a new line. The nested commands must be entered one per line,\n\ | |
e52bfe0c JL |
3843 | and should be terminated by the word `end'."); |
3844 | ||
3845 | add_com ("if", class_support, if_command, | |
3846 | "Execute nested commands once IF the conditional expression is non zero.\n\ | |
943b7032 PS |
3847 | The conditional expression must follow the word `if' and must in turn be\n\ |
3848 | followed by a new line. The nested commands must be entered one per line,\n\ | |
3849 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
e52bfe0c JL |
3850 | is used, the same rules apply to its nested commands as to the first ones."); |
3851 | ||
172559ec JK |
3852 | /* If target is open when baud changes, it doesn't take effect until the |
3853 | next open (I think, not sure). */ | |
3854 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
3855 | var_zinteger, (char *)&baud_rate, | |
3856 | "Set baud rate for remote serial I/O.\n\ | |
3857 | This value is used to set the speed of the serial port when debugging\n\ | |
3858 | using remote targets.", &setlist), | |
3859 | &showlist); | |
3860 | ||
3861 | add_show_from_set ( | |
3862 | add_set_cmd ("remotedebug", no_class, var_zinteger, (char *)&remote_debug, | |
3863 | "Set debugging of remote protocol.\n\ | |
3864 | When enabled, each packet sent or received with the remote target\n\ | |
3865 | is displayed.", &setlist), | |
3866 | &showlist); | |
cb1709ae DP |
3867 | |
3868 | add_show_from_set ( | |
3869 | add_set_cmd ("remotetimeout", no_class, var_integer, (char *)&remote_timeout, | |
3870 | "Set timeout limit to wait for target to respond.\n\ | |
3871 | This value is used to set the time limit for gdb to wait for a response\n\ | |
3872 | from he target.", &setlist), | |
3873 | &showlist); | |
62dd860e MS |
3874 | |
3875 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, | |
3876 | (char *)&annotation_level, "Set annotation_level.\n\ | |
3877 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ | |
3878 | 2 == output annotated suitably for use by programs that control GDB.", | |
3879 | &setlist); | |
3880 | c = add_show_from_set (c, &showlist); | |
172559ec | 3881 | } |