Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Top level stuff for GDB, the GNU debugger. |
d9fcf2fb | 2 | Copyright 1986-2000 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #include "defs.h" | |
22 | #include "gdbcmd.h" | |
23 | #include "call-cmds.h" | |
24 | #include "symtab.h" | |
25 | #include "inferior.h" | |
26 | #include "signals.h" | |
27 | #include "target.h" | |
28 | #include "breakpoint.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "value.h" | |
32 | #include "language.h" | |
c5aa993b | 33 | #include "terminal.h" /* For job_control. */ |
c906108c | 34 | #include "annotate.h" |
c5f0f3d0 | 35 | #include "completer.h" |
c906108c | 36 | #include "top.h" |
d4f3574e | 37 | #include "version.h" |
c906108c SS |
38 | |
39 | /* readline include files */ | |
40 | #include <readline/readline.h> | |
41 | #include <readline/history.h> | |
42 | ||
43 | /* readline defines this. */ | |
44 | #undef savestring | |
45 | ||
46 | #include <sys/types.h> | |
c906108c | 47 | |
c4093a6a | 48 | #include <setjmp.h> |
2acceee2 | 49 | |
c2c6d25f | 50 | #include "event-top.h" |
c906108c SS |
51 | #include "gdb_string.h" |
52 | #include "gdb_stat.h" | |
53 | #include <ctype.h> | |
8b93c638 JM |
54 | #ifdef UI_OUT |
55 | #include "ui-out.h" | |
56 | #include "cli-out.h" | |
57 | #endif | |
c906108c | 58 | |
c906108c SS |
59 | /* Prototypes for local functions */ |
60 | ||
a14ed312 | 61 | static void dont_repeat_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void source_cleanup_lines (PTR); |
c906108c | 64 | |
a14ed312 | 65 | static void user_defined_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void init_signals (void); |
c906108c SS |
68 | |
69 | #ifdef STOP_SIGNAL | |
a14ed312 | 70 | static void stop_sig (int); |
c906108c SS |
71 | #endif |
72 | ||
a14ed312 | 73 | static char *readline_line_completion_function (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void while_command (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static void if_command (char *, int); |
c906108c | 78 | |
a14ed312 KB |
79 | static struct command_line *build_command_line (enum command_control_type, |
80 | char *); | |
c906108c | 81 | |
a14ed312 KB |
82 | static struct command_line *get_command_line (enum command_control_type, |
83 | char *); | |
c906108c | 84 | |
a14ed312 | 85 | static void realloc_body_list (struct command_line *, int); |
c906108c | 86 | |
a14ed312 | 87 | static enum misc_command_type read_next_line (struct command_line **); |
c906108c SS |
88 | |
89 | static enum command_control_type | |
a14ed312 | 90 | recurse_read_control_structure (struct command_line *); |
c906108c | 91 | |
a14ed312 | 92 | static struct cleanup *setup_user_args (char *); |
c906108c | 93 | |
a14ed312 | 94 | static char *locate_arg (char *); |
c906108c | 95 | |
a14ed312 | 96 | static char *insert_args (char *); |
c906108c | 97 | |
e41a3b1a | 98 | static void arg_cleanup (void *); |
c906108c | 99 | |
a14ed312 | 100 | static void init_main (void); |
c906108c | 101 | |
a14ed312 | 102 | static void init_cmd_lists (void); |
c906108c | 103 | |
a14ed312 | 104 | static void float_handler (int); |
c906108c | 105 | |
a14ed312 | 106 | static void init_signals (void); |
c906108c | 107 | |
a14ed312 | 108 | static void set_verbose (char *, int, struct cmd_list_element *); |
c906108c | 109 | |
a14ed312 | 110 | static void show_history (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | static void set_history (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | static void set_history_size_command (char *, int, struct cmd_list_element *); |
c906108c | 115 | |
a14ed312 | 116 | static void show_commands (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void echo_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void pwd_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void show_version (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void document_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void define_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | static void validate_comname (char *); |
c906108c | 129 | |
a14ed312 | 130 | static void help_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static void show_command (char *, int); |
c906108c | 133 | |
a14ed312 | 134 | static void info_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void complete_command (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | static void do_nothing (int); |
c906108c | 139 | |
a14ed312 | 140 | static void show_debug (char *, int); |
5d161b24 | 141 | |
a14ed312 | 142 | static void set_debug (char *, int); |
5d161b24 | 143 | |
c906108c | 144 | #ifdef SIGHUP |
392a587b | 145 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
146 | gdb to use the event loop as the default command loop and we merge |
147 | event-top.c into this file, top.c */ | |
a14ed312 | 148 | /* static */ int quit_cover (PTR); |
c906108c | 149 | |
a14ed312 | 150 | static void disconnect (int); |
c906108c SS |
151 | #endif |
152 | ||
e41a3b1a AC |
153 | static void do_restore_instream_cleanup (void *stream); |
154 | ||
155 | static struct cleanup *make_cleanup_free_command_lines (struct command_line **); | |
c906108c | 156 | |
104c1213 JM |
157 | /* Default command line prompt. This is overriden in some configs. */ |
158 | ||
159 | #ifndef DEFAULT_PROMPT | |
160 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
161 | #endif |
162 | ||
163 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
164 | ||
165 | #ifndef GDBINIT_FILENAME | |
166 | #define GDBINIT_FILENAME ".gdbinit" | |
167 | #endif | |
168 | char gdbinit[] = GDBINIT_FILENAME; | |
169 | ||
170 | int inhibit_gdbinit = 0; | |
171 | ||
172 | /* If nonzero, and GDB has been configured to be able to use windows, | |
173 | attempt to open them upon startup. */ | |
174 | ||
175 | int use_windows = 1; | |
176 | ||
c906108c SS |
177 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
178 | ||
179 | /* Flag for whether we want all the "from_tty" gubbish printed. */ | |
180 | ||
c5aa993b | 181 | int caution = 1; /* Default is yes, sigh. */ |
c906108c SS |
182 | |
183 | /* Define all cmd_list_elements. */ | |
184 | ||
185 | /* Chain containing all defined commands. */ | |
186 | ||
187 | struct cmd_list_element *cmdlist; | |
188 | ||
189 | /* Chain containing all defined info subcommands. */ | |
190 | ||
191 | struct cmd_list_element *infolist; | |
192 | ||
193 | /* Chain containing all defined enable subcommands. */ | |
194 | ||
195 | struct cmd_list_element *enablelist; | |
196 | ||
197 | /* Chain containing all defined disable subcommands. */ | |
198 | ||
199 | struct cmd_list_element *disablelist; | |
200 | ||
201 | /* Chain containing all defined toggle subcommands. */ | |
202 | ||
203 | struct cmd_list_element *togglelist; | |
204 | ||
205 | /* Chain containing all defined stop subcommands. */ | |
206 | ||
207 | struct cmd_list_element *stoplist; | |
208 | ||
209 | /* Chain containing all defined delete subcommands. */ | |
210 | ||
211 | struct cmd_list_element *deletelist; | |
212 | ||
213 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
214 | ||
215 | struct cmd_list_element *enablebreaklist; | |
216 | ||
217 | /* Chain containing all defined set subcommands */ | |
218 | ||
219 | struct cmd_list_element *setlist; | |
220 | ||
221 | /* Chain containing all defined unset subcommands */ | |
222 | ||
223 | struct cmd_list_element *unsetlist; | |
224 | ||
225 | /* Chain containing all defined show subcommands. */ | |
226 | ||
227 | struct cmd_list_element *showlist; | |
228 | ||
229 | /* Chain containing all defined \"set history\". */ | |
230 | ||
231 | struct cmd_list_element *sethistlist; | |
232 | ||
233 | /* Chain containing all defined \"show history\". */ | |
234 | ||
235 | struct cmd_list_element *showhistlist; | |
236 | ||
237 | /* Chain containing all defined \"unset history\". */ | |
238 | ||
239 | struct cmd_list_element *unsethistlist; | |
240 | ||
241 | /* Chain containing all defined maintenance subcommands. */ | |
242 | ||
c906108c | 243 | struct cmd_list_element *maintenancelist; |
c906108c SS |
244 | |
245 | /* Chain containing all defined "maintenance info" subcommands. */ | |
246 | ||
c906108c | 247 | struct cmd_list_element *maintenanceinfolist; |
c906108c SS |
248 | |
249 | /* Chain containing all defined "maintenance print" subcommands. */ | |
250 | ||
c906108c | 251 | struct cmd_list_element *maintenanceprintlist; |
c906108c SS |
252 | |
253 | struct cmd_list_element *setprintlist; | |
254 | ||
255 | struct cmd_list_element *showprintlist; | |
256 | ||
5d161b24 DB |
257 | struct cmd_list_element *setdebuglist; |
258 | ||
259 | struct cmd_list_element *showdebuglist; | |
260 | ||
c906108c SS |
261 | struct cmd_list_element *setchecklist; |
262 | ||
263 | struct cmd_list_element *showchecklist; | |
264 | ||
265 | /* stdio stream that command input is being read from. Set to stdin normally. | |
266 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
267 | executing a user-defined command or interacting via a GUI. */ | |
268 | ||
269 | FILE *instream; | |
270 | ||
271 | /* Current working directory. */ | |
272 | ||
273 | char *current_directory; | |
274 | ||
275 | /* The directory name is actually stored here (usually). */ | |
276 | char gdb_dirbuf[1024]; | |
277 | ||
278 | /* Function to call before reading a command, if nonzero. | |
279 | The function receives two args: an input stream, | |
280 | and a prompt string. */ | |
281 | ||
507f3c78 | 282 | void (*window_hook) (FILE *, char *); |
c906108c SS |
283 | |
284 | int epoch_interface; | |
285 | int xgdb_verbose; | |
286 | ||
287 | /* gdb prints this when reading a command interactively */ | |
c5aa993b | 288 | static char *gdb_prompt_string; /* the global prompt string */ |
a14ed312 | 289 | extern char *get_prompt (void); /* access function for prompt string */ |
c906108c SS |
290 | |
291 | /* Buffer used for reading command lines, and the size | |
292 | allocated for it so far. */ | |
293 | ||
294 | char *line; | |
295 | int linesize = 100; | |
296 | ||
297 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 298 | affects things like recording into the command history, commands |
c906108c SS |
299 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
300 | whatever) can issue its own commands and also send along commands | |
301 | from the user, and have the user not notice that the user interface | |
302 | is issuing commands too. */ | |
303 | int server_command; | |
304 | ||
305 | /* Baud rate specified for talking to serial target systems. Default | |
306 | is left as -1, so targets can choose their own defaults. */ | |
307 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 | |
308 | or (unsigned int)-1. This is a Bad User Interface. */ | |
309 | ||
310 | int baud_rate = -1; | |
311 | ||
312 | /* Timeout limit for response from target. */ | |
313 | ||
ce808e91 AC |
314 | /* The default value has been changed many times over the years. It |
315 | was originally 5 seconds. But that was thought to be a long time | |
316 | to sit and wait, so it was changed to 2 seconds. That was thought | |
317 | to be plenty unless the connection was going through some terminal | |
318 | server or multiplexer or other form of hairy serial connection. | |
319 | ||
320 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
321 | it began being used in other remote-* targets. It appears that the | |
322 | default was changed to 20 seconds at that time, perhaps because the | |
323 | Hitachi E7000 ICE didn't always respond in a timely manner. | |
324 | ||
325 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
326 | 20 seconds is far worse. This demonstrates the difficulty of using | |
327 | a single variable for all protocol timeouts. | |
328 | ||
329 | As remote.c is used much more than remote-e7000.c, it was changed | |
330 | back to 2 seconds in 1999. */ | |
331 | ||
332 | int remote_timeout = 2; | |
c906108c SS |
333 | |
334 | /* Non-zero tells remote* modules to output debugging info. */ | |
335 | ||
336 | int remote_debug = 0; | |
337 | ||
43ff13b4 JM |
338 | /* Non-zero means the target is running. Note: this is different from |
339 | saying that there is an active target and we are stopped at a | |
340 | breakpoint, for instance. This is a real indicator whether the | |
341 | target is off and running, which gdb is doing something else. */ | |
342 | int target_executing = 0; | |
343 | ||
c906108c SS |
344 | /* Level of control structure. */ |
345 | static int control_level; | |
346 | ||
347 | /* Structure for arguments to user defined functions. */ | |
348 | #define MAXUSERARGS 10 | |
349 | struct user_args | |
c5aa993b JM |
350 | { |
351 | struct user_args *next; | |
352 | struct | |
353 | { | |
354 | char *arg; | |
355 | int len; | |
356 | } | |
357 | a[MAXUSERARGS]; | |
358 | int count; | |
359 | } | |
360 | *user_args; | |
c906108c SS |
361 | |
362 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
363 | ||
364 | #ifndef STOP_SIGNAL | |
365 | #ifdef SIGTSTP | |
366 | #define STOP_SIGNAL SIGTSTP | |
a14ed312 | 367 | static void stop_sig (int); |
c906108c SS |
368 | #endif |
369 | #endif | |
370 | ||
371 | /* Some System V have job control but not sigsetmask(). */ | |
372 | #if !defined (HAVE_SIGSETMASK) | |
373 | #if !defined (USG) | |
374 | #define HAVE_SIGSETMASK 1 | |
375 | #else | |
376 | #define HAVE_SIGSETMASK 0 | |
377 | #endif | |
378 | #endif | |
379 | ||
380 | #if 0 == (HAVE_SIGSETMASK) | |
381 | #define sigsetmask(n) | |
382 | #endif | |
383 | ||
384 | /* Hooks for alternate command interfaces. */ | |
385 | ||
386 | /* Called after most modules have been initialized, but before taking users | |
387 | command file. */ | |
388 | ||
507f3c78 | 389 | void (*init_ui_hook) (char *argv0); |
7a292a7a SS |
390 | |
391 | /* This hook is called from within gdb's many mini-event loops which could | |
392 | steal control from a real user interface's event loop. It returns | |
393 | non-zero if the user is requesting a detach, zero otherwise. */ | |
394 | ||
507f3c78 | 395 | int (*ui_loop_hook) (int); |
c906108c SS |
396 | |
397 | /* Called instead of command_loop at top level. Can be invoked via | |
398 | return_to_top_level. */ | |
399 | ||
507f3c78 | 400 | void (*command_loop_hook) (void); |
c906108c SS |
401 | |
402 | ||
c906108c SS |
403 | /* Called from print_frame_info to list the line we stopped in. */ |
404 | ||
507f3c78 KB |
405 | void (*print_frame_info_listing_hook) (struct symtab * s, int line, |
406 | int stopline, int noerror); | |
c906108c SS |
407 | /* Replaces most of query. */ |
408 | ||
507f3c78 | 409 | int (*query_hook) (const char *, va_list); |
c906108c SS |
410 | |
411 | /* Replaces most of warning. */ | |
412 | ||
507f3c78 | 413 | void (*warning_hook) (const char *, va_list); |
c906108c | 414 | |
c906108c SS |
415 | /* These three functions support getting lines of text from the user. They |
416 | are used in sequence. First readline_begin_hook is called with a text | |
417 | string that might be (for example) a message for the user to type in a | |
418 | sequence of commands to be executed at a breakpoint. If this function | |
419 | calls back to a GUI, it might take this opportunity to pop up a text | |
420 | interaction window with this message. Next, readline_hook is called | |
421 | with a prompt that is emitted prior to collecting the user input. | |
422 | It can be called multiple times. Finally, readline_end_hook is called | |
423 | to notify the GUI that we are done with the interaction window and it | |
424 | can close it. */ | |
425 | ||
507f3c78 KB |
426 | void (*readline_begin_hook) (char *, ...); |
427 | char *(*readline_hook) (char *); | |
428 | void (*readline_end_hook) (void); | |
c906108c SS |
429 | |
430 | /* Called as appropriate to notify the interface of the specified breakpoint | |
431 | conditions. */ | |
432 | ||
507f3c78 KB |
433 | void (*create_breakpoint_hook) (struct breakpoint * bpt); |
434 | void (*delete_breakpoint_hook) (struct breakpoint * bpt); | |
435 | void (*modify_breakpoint_hook) (struct breakpoint * bpt); | |
c906108c | 436 | |
6426a772 JM |
437 | /* Called as appropriate to notify the interface that we have attached |
438 | to or detached from an already running process. */ | |
439 | ||
507f3c78 KB |
440 | void (*attach_hook) (void); |
441 | void (*detach_hook) (void); | |
6426a772 | 442 | |
c906108c SS |
443 | /* Called during long calculations to allow GUI to repair window damage, and to |
444 | check for stop buttons, etc... */ | |
445 | ||
507f3c78 | 446 | void (*interactive_hook) (void); |
c906108c SS |
447 | |
448 | /* Called when the registers have changed, as a hint to a GUI | |
449 | to minimize window update. */ | |
450 | ||
507f3c78 | 451 | void (*registers_changed_hook) (void); |
c906108c SS |
452 | |
453 | /* Tell the GUI someone changed the register REGNO. -1 means | |
454 | that the caller does not know which register changed or | |
c5aa993b | 455 | that several registers have changed (see value_assign). */ |
507f3c78 | 456 | void (*register_changed_hook) (int regno); |
c906108c SS |
457 | |
458 | /* Tell the GUI someone changed LEN bytes of memory at ADDR */ | |
507f3c78 | 459 | void (*memory_changed_hook) (CORE_ADDR addr, int len); |
c906108c SS |
460 | |
461 | /* Called when going to wait for the target. Usually allows the GUI to run | |
462 | while waiting for target events. */ | |
463 | ||
507f3c78 | 464 | int (*target_wait_hook) (int pid, struct target_waitstatus * status); |
c906108c SS |
465 | |
466 | /* Used by UI as a wrapper around command execution. May do various things | |
467 | like enabling/disabling buttons, etc... */ | |
468 | ||
507f3c78 KB |
469 | void (*call_command_hook) (struct cmd_list_element * c, char *cmd, |
470 | int from_tty); | |
c906108c | 471 | |
96baa820 JM |
472 | /* Called after a `set' command has finished. Is only run if the |
473 | `set' command succeeded. */ | |
474 | ||
eb2f494a | 475 | void (*set_hook) (struct cmd_list_element * c); |
96baa820 | 476 | |
c906108c SS |
477 | /* Called when the current thread changes. Argument is thread id. */ |
478 | ||
507f3c78 | 479 | void (*context_hook) (int id); |
c906108c SS |
480 | |
481 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
482 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
483 | ||
eb2f494a | 484 | NORETURN void (*error_hook) (void) ATTR_NORETURN; |
c906108c | 485 | \f |
c5aa993b | 486 | |
99eeeb0f ND |
487 | /* One should use catch_errors rather than manipulating these |
488 | directly. */ | |
c4093a6a JM |
489 | #if defined(HAVE_SIGSETJMP) |
490 | #define SIGJMP_BUF sigjmp_buf | |
491 | #define SIGSETJMP(buf) sigsetjmp(buf, 1) | |
492 | #define SIGLONGJMP(buf,val) siglongjmp(buf,val) | |
493 | #else | |
494 | #define SIGJMP_BUF jmp_buf | |
495 | #define SIGSETJMP(buf) setjmp(buf) | |
496 | #define SIGLONGJMP(buf,val) longjmp(buf,val) | |
497 | #endif | |
498 | ||
99eeeb0f ND |
499 | /* Where to go for return_to_top_level. */ |
500 | static SIGJMP_BUF *catch_return; | |
c906108c | 501 | |
99eeeb0f | 502 | /* Return for reason REASON to the nearest containing catch_errors(). */ |
c906108c | 503 | |
c2d11a7d | 504 | NORETURN void |
fba45db2 | 505 | return_to_top_level (enum return_reason reason) |
c906108c SS |
506 | { |
507 | quit_flag = 0; | |
508 | immediate_quit = 0; | |
509 | ||
510 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
511 | I can think of a reason why that is vital, though). */ | |
c5aa993b | 512 | bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */ |
c906108c SS |
513 | |
514 | disable_current_display (); | |
515 | do_cleanups (ALL_CLEANUPS); | |
c4093a6a | 516 | if (event_loop_p && target_can_async_p () && !target_executing) |
43ff13b4 | 517 | do_exec_cleanups (ALL_CLEANUPS); |
6426a772 JM |
518 | if (event_loop_p && sync_execution) |
519 | do_exec_error_cleanups (ALL_CLEANUPS); | |
c906108c SS |
520 | |
521 | if (annotation_level > 1) | |
522 | switch (reason) | |
523 | { | |
524 | case RETURN_QUIT: | |
525 | annotate_quit (); | |
526 | break; | |
527 | case RETURN_ERROR: | |
528 | annotate_error (); | |
529 | break; | |
530 | } | |
531 | ||
99eeeb0f ND |
532 | /* Jump to the containing catch_errors() call, communicating REASON |
533 | to that call via setjmp's return value. Note that REASON can't | |
534 | be zero, by definition in defs.h. */ | |
535 | ||
eb2f494a | 536 | (NORETURN void) SIGLONGJMP (*catch_return, (int) reason); |
c906108c SS |
537 | } |
538 | ||
539 | /* Call FUNC with arg ARGS, catching any errors. If there is no | |
540 | error, return the value returned by FUNC. If there is an error, | |
541 | print ERRSTRING, print the specific error message, then return | |
542 | zero. | |
543 | ||
544 | Must not be called with immediate_quit in effect (bad things might | |
545 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
546 | This is an OK restriction; with very few exceptions immediate_quit can | |
547 | be replaced by judicious use of QUIT. | |
548 | ||
549 | MASK specifies what to catch; it is normally set to | |
550 | RETURN_MASK_ALL, if for no other reason than that the code which | |
551 | calls catch_errors might not be set up to deal with a quit which | |
552 | isn't caught. But if the code can deal with it, it generally | |
553 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
554 | useful to abort only the portion of the operation inside the | |
555 | catch_errors. Note that quit should return to the command line | |
556 | fairly quickly, even if some further processing is being done. */ | |
557 | ||
11cf8741 JM |
558 | /* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with |
559 | error() et.al. could maintain a set of flags that indicate the the | |
560 | current state of each of the longjmp buffers. This would give the | |
561 | longjmp code the chance to detect a longjmp botch (before it gets | |
562 | to longjmperror()). Prior to 1999-11-05 this wasn't possible as | |
563 | code also randomly used a SET_TOP_LEVEL macro that directly | |
564 | initialize the longjmp buffers. */ | |
565 | ||
e26cc349 | 566 | /* MAYBE: cagney/1999-11-05: Should the catch_errors and cleanups code |
11cf8741 JM |
567 | be consolidated into a single file instead of being distributed |
568 | between utils.c and top.c? */ | |
569 | ||
c906108c | 570 | int |
fba45db2 KB |
571 | catch_errors (catch_errors_ftype *func, PTR args, char *errstring, |
572 | return_mask mask) | |
c906108c | 573 | { |
99eeeb0f ND |
574 | SIGJMP_BUF *saved_catch; |
575 | SIGJMP_BUF catch; | |
c906108c SS |
576 | int val; |
577 | struct cleanup *saved_cleanup_chain; | |
578 | char *saved_error_pre_print; | |
579 | char *saved_quit_pre_print; | |
580 | ||
99eeeb0f ND |
581 | /* Return value from SIGSETJMP(): enum return_reason if error or |
582 | quit caught, 0 otherwise. */ | |
583 | int caught; | |
584 | ||
585 | /* Override error/quit messages during FUNC. */ | |
586 | ||
c906108c SS |
587 | saved_error_pre_print = error_pre_print; |
588 | saved_quit_pre_print = quit_pre_print; | |
589 | ||
590 | if (mask & RETURN_MASK_ERROR) | |
99eeeb0f | 591 | error_pre_print = errstring; |
c906108c | 592 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
593 | quit_pre_print = errstring; |
594 | ||
595 | /* Prevent error/quit during FUNC from calling cleanups established | |
596 | prior to here. */ | |
597 | ||
598 | saved_cleanup_chain = save_cleanups (); | |
599 | ||
600 | /* Call FUNC, catching error/quit events. */ | |
601 | ||
602 | saved_catch = catch_return; | |
603 | catch_return = &catch; | |
604 | caught = SIGSETJMP (catch); | |
605 | if (!caught) | |
606 | val = (*func) (args); | |
7f7e9482 AC |
607 | else |
608 | val = 0; | |
99eeeb0f ND |
609 | catch_return = saved_catch; |
610 | ||
e26cc349 | 611 | /* FIXME: cagney/1999-11-05: A correct FUNC implementation will |
99eeeb0f | 612 | clean things up (restoring the cleanup chain) to the state they |
e26cc349 | 613 | were just prior to the call. Unfortunately, many FUNC's are not |
99eeeb0f ND |
614 | that well behaved. This could be fixed by adding either a |
615 | do_cleanups call (to cover the problem) or an assertion check to | |
616 | detect bad FUNCs code. */ | |
617 | ||
618 | /* Restore the cleanup chain and error/quit messages to their | |
619 | original states. */ | |
c906108c SS |
620 | |
621 | restore_cleanups (saved_cleanup_chain); | |
622 | ||
c906108c | 623 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
624 | quit_pre_print = saved_quit_pre_print; |
625 | if (mask & RETURN_MASK_ERROR) | |
626 | error_pre_print = saved_error_pre_print; | |
627 | ||
628 | /* Return normally if no error/quit event occurred. */ | |
629 | ||
630 | if (!caught) | |
631 | return val; | |
632 | ||
633 | /* If the caller didn't request that the event be caught, relay the | |
634 | event to the next containing catch_errors(). */ | |
635 | ||
636 | if (!(mask & RETURN_MASK (caught))) | |
637 | return_to_top_level (caught); | |
638 | ||
639 | /* Tell the caller that an event was caught. | |
640 | ||
641 | FIXME: nsd/2000-02-22: When MASK is RETURN_MASK_ALL, the caller | |
642 | can't tell what type of event occurred. | |
643 | ||
644 | A possible fix is to add a new interface, catch_event(), that | |
645 | returns enum return_reason after catching an error or a quit. | |
646 | ||
647 | When returning normally, i.e. without catching an error or a | |
648 | quit, catch_event() could return RETURN_NORMAL, which would be | |
649 | added to enum return_reason. FUNC would return information | |
650 | exclusively via ARGS. | |
651 | ||
652 | Alternatively, normal catch_event() could return FUNC's return | |
653 | value. The caller would need to be aware of potential overlap | |
654 | with enum return_reason, which could be publicly restricted to | |
655 | negative values to simplify return value processing in FUNC and | |
656 | in the caller. */ | |
657 | ||
658 | return 0; | |
c906108c SS |
659 | } |
660 | ||
11cf8741 JM |
661 | struct captured_command_args |
662 | { | |
663 | catch_command_errors_ftype *command; | |
664 | char *arg; | |
665 | int from_tty; | |
666 | }; | |
667 | ||
668 | static int | |
669 | do_captured_command (void *data) | |
670 | { | |
671 | struct captured_command_args *context = data; | |
672 | context->command (context->arg, context->from_tty); | |
673 | /* FIXME: cagney/1999-11-07: Technically this do_cleanups() call | |
674 | isn't needed. Instead an assertion check could be made that | |
675 | simply confirmed that the called function correctly cleaned up | |
e26cc349 | 676 | after itself. Unfortunately, old code (prior to 1999-11-04) in |
11cf8741 JM |
677 | main.c was calling SET_TOP_LEVEL(), calling the command function, |
678 | and then *always* calling do_cleanups(). For the moment we | |
679 | remain ``bug compatible'' with that old code.. */ | |
680 | do_cleanups (ALL_CLEANUPS); | |
681 | return 1; | |
682 | } | |
683 | ||
684 | int | |
eb2f494a | 685 | catch_command_errors (catch_command_errors_ftype * command, |
11cf8741 JM |
686 | char *arg, int from_tty, return_mask mask) |
687 | { | |
688 | struct captured_command_args args; | |
689 | args.command = command; | |
690 | args.arg = arg; | |
691 | args.from_tty = from_tty; | |
692 | return catch_errors (do_captured_command, &args, "", mask); | |
693 | } | |
694 | ||
695 | ||
c906108c SS |
696 | /* Handler for SIGHUP. */ |
697 | ||
698 | #ifdef SIGHUP | |
699 | static void | |
fba45db2 | 700 | disconnect (int signo) |
c906108c SS |
701 | { |
702 | catch_errors (quit_cover, NULL, | |
c5aa993b | 703 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
c906108c SS |
704 | signal (SIGHUP, SIG_DFL); |
705 | kill (getpid (), SIGHUP); | |
706 | } | |
707 | ||
708 | /* Just a little helper function for disconnect(). */ | |
709 | ||
392a587b | 710 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
711 | gdb to use the event loop as the default command loop and we merge |
712 | event-top.c into this file, top.c */ | |
713 | /* static */ int | |
fba45db2 | 714 | quit_cover (PTR s) |
c906108c | 715 | { |
c5aa993b JM |
716 | caution = 0; /* Throw caution to the wind -- we're exiting. |
717 | This prevents asking the user dumb questions. */ | |
718 | quit_command ((char *) 0, 0); | |
c906108c SS |
719 | return 0; |
720 | } | |
721 | #endif /* defined SIGHUP */ | |
722 | \f | |
723 | /* Line number we are currently in in a file which is being sourced. */ | |
392a587b | 724 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
725 | gdb to use the event loop as the default command loop and we merge |
726 | event-top.c into this file, top.c */ | |
727 | /* static */ int source_line_number; | |
c906108c SS |
728 | |
729 | /* Name of the file we are sourcing. */ | |
392a587b | 730 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
731 | gdb to use the event loop as the default command loop and we merge |
732 | event-top.c into this file, top.c */ | |
733 | /* static */ char *source_file_name; | |
c906108c SS |
734 | |
735 | /* Buffer containing the error_pre_print used by the source stuff. | |
736 | Malloc'd. */ | |
392a587b | 737 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
738 | gdb to use the event loop as the default command loop and we merge |
739 | event-top.c into this file, top.c */ | |
740 | /* static */ char *source_error; | |
c906108c SS |
741 | static int source_error_allocated; |
742 | ||
743 | /* Something to glom on to the start of error_pre_print if source_file_name | |
744 | is set. */ | |
392a587b | 745 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
746 | gdb to use the event loop as the default command loop and we merge |
747 | event-top.c into this file, top.c */ | |
748 | /* static */ char *source_pre_error; | |
c906108c SS |
749 | |
750 | /* Clean up on error during a "source" command (or execution of a | |
751 | user-defined command). */ | |
752 | ||
753 | static void | |
e41a3b1a | 754 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
755 | { |
756 | /* Restore the previous input stream. */ | |
757 | instream = stream; | |
758 | } | |
759 | ||
760 | /* Read commands from STREAM. */ | |
761 | void | |
fba45db2 | 762 | read_command_file (FILE *stream) |
c906108c SS |
763 | { |
764 | struct cleanup *cleanups; | |
765 | ||
e41a3b1a | 766 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 767 | instream = stream; |
c5aa993b | 768 | command_loop (); |
c906108c SS |
769 | do_cleanups (cleanups); |
770 | } | |
771 | \f | |
a14ed312 | 772 | extern void init_proc (void); |
c906108c | 773 | |
507f3c78 | 774 | void (*pre_init_ui_hook) (void); |
c906108c | 775 | |
e41a3b1a AC |
776 | #ifdef __MSDOS__ |
777 | void | |
778 | do_chdir_cleanup (void *old_dir) | |
779 | { | |
780 | chdir (old_dir); | |
781 | free (old_dir); | |
782 | } | |
783 | #endif | |
784 | ||
c906108c | 785 | void |
fba45db2 | 786 | gdb_init (char *argv0) |
c906108c SS |
787 | { |
788 | if (pre_init_ui_hook) | |
789 | pre_init_ui_hook (); | |
790 | ||
791 | /* Run the init function of each source file */ | |
792 | ||
793 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
794 | current_directory = gdb_dirbuf; | |
795 | ||
a0b3c4fd JM |
796 | #ifdef __MSDOS__ |
797 | /* Make sure we return to the original directory upon exit, come | |
798 | what may, since the OS doesn't do that for us. */ | |
e41a3b1a | 799 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); |
a0b3c4fd JM |
800 | #endif |
801 | ||
c5aa993b JM |
802 | init_cmd_lists (); /* This needs to be done first */ |
803 | initialize_targets (); /* Setup target_terminal macros for utils.c */ | |
804 | initialize_utils (); /* Make errors and warnings possible */ | |
c906108c | 805 | initialize_all_files (); |
e514a9d6 | 806 | initialize_current_architecture (); |
c5aa993b | 807 | init_main (); /* But that omits this file! Do it now */ |
cd0fc7c3 SS |
808 | |
809 | /* The signal handling mechanism is different depending whether or | |
810 | not the async version is run. NOTE: in the future we plan to make | |
811 | the event loop be the default engine of gdb, and this difference | |
812 | will disappear. */ | |
6426a772 | 813 | if (event_loop_p) |
cd0fc7c3 SS |
814 | async_init_signals (); |
815 | else | |
c5aa993b | 816 | init_signals (); |
c906108c | 817 | |
c906108c SS |
818 | /* We need a default language for parsing expressions, so simple things like |
819 | "set width 0" won't fail if no language is explicitly set in a config file | |
820 | or implicitly set by reading an executable during startup. */ | |
821 | set_language (language_c); | |
c5aa993b | 822 | expected_language = current_language; /* don't warn about the change. */ |
c906108c | 823 | |
8b93c638 JM |
824 | #ifdef UI_OUT |
825 | /* Install the default UI */ | |
826 | uiout = cli_out_new (gdb_stdout); | |
827 | #endif | |
fb40c209 AC |
828 | |
829 | #ifdef UI_OUT | |
830 | /* All the interpreters should have had a look at things by now. | |
831 | Initialize the selected interpreter. */ | |
832 | if (interpreter_p && !init_ui_hook) | |
833 | { | |
834 | fprintf_unfiltered (gdb_stderr, "Interpreter `%s' unrecognized.\n", | |
835 | interpreter_p); | |
836 | exit (1); | |
837 | } | |
838 | #endif | |
8b93c638 | 839 | |
c906108c SS |
840 | if (init_ui_hook) |
841 | init_ui_hook (argv0); | |
842 | } | |
843 | ||
844 | /* Allocate, initialize a new command line structure for one of the | |
845 | control commands (if/while). */ | |
846 | ||
847 | static struct command_line * | |
fba45db2 | 848 | build_command_line (enum command_control_type type, char *args) |
c906108c SS |
849 | { |
850 | struct command_line *cmd; | |
851 | ||
852 | if (args == NULL) | |
853 | error ("if/while commands require arguments.\n"); | |
854 | ||
c5aa993b | 855 | cmd = (struct command_line *) xmalloc (sizeof (struct command_line)); |
c906108c SS |
856 | cmd->next = NULL; |
857 | cmd->control_type = type; | |
858 | ||
859 | cmd->body_count = 1; | |
860 | cmd->body_list | |
c5aa993b JM |
861 | = (struct command_line **) xmalloc (sizeof (struct command_line *) |
862 | * cmd->body_count); | |
c906108c SS |
863 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); |
864 | cmd->line = savestring (args, strlen (args)); | |
865 | return cmd; | |
866 | } | |
867 | ||
868 | /* Build and return a new command structure for the control commands | |
869 | such as "if" and "while". */ | |
870 | ||
871 | static struct command_line * | |
fba45db2 | 872 | get_command_line (enum command_control_type type, char *arg) |
c906108c SS |
873 | { |
874 | struct command_line *cmd; | |
875 | struct cleanup *old_chain = NULL; | |
876 | ||
877 | /* Allocate and build a new command line structure. */ | |
878 | cmd = build_command_line (type, arg); | |
879 | ||
e41a3b1a | 880 | old_chain = make_cleanup_free_command_lines (&cmd); |
c906108c SS |
881 | |
882 | /* Read in the body of this command. */ | |
883 | if (recurse_read_control_structure (cmd) == invalid_control) | |
884 | { | |
885 | warning ("error reading in control structure\n"); | |
886 | do_cleanups (old_chain); | |
887 | return NULL; | |
888 | } | |
889 | ||
890 | discard_cleanups (old_chain); | |
891 | return cmd; | |
892 | } | |
893 | ||
894 | /* Recursively print a command (including full control structures). */ | |
8b93c638 JM |
895 | #ifdef UI_OUT |
896 | void | |
fba45db2 KB |
897 | print_command_lines (struct ui_out *uiout, struct command_line *cmd, |
898 | unsigned int depth) | |
8b93c638 JM |
899 | { |
900 | struct command_line *list; | |
901 | ||
902 | list = cmd; | |
903 | while (list) | |
904 | { | |
905 | ||
906 | if (depth) | |
907 | ui_out_spaces (uiout, 2 * depth); | |
908 | ||
909 | /* A simple command, print it and continue. */ | |
910 | if (list->control_type == simple_control) | |
911 | { | |
912 | ui_out_field_string (uiout, NULL, list->line); | |
913 | ui_out_text (uiout, "\n"); | |
914 | list = list->next; | |
915 | continue; | |
916 | } | |
917 | ||
918 | /* loop_continue to jump to the start of a while loop, print it | |
919 | and continue. */ | |
920 | if (list->control_type == continue_control) | |
921 | { | |
922 | ui_out_field_string (uiout, NULL, "loop_continue"); | |
923 | ui_out_text (uiout, "\n"); | |
924 | list = list->next; | |
925 | continue; | |
926 | } | |
927 | ||
928 | /* loop_break to break out of a while loop, print it and continue. */ | |
929 | if (list->control_type == break_control) | |
930 | { | |
931 | ui_out_field_string (uiout, NULL, "loop_break"); | |
932 | ui_out_text (uiout, "\n"); | |
933 | list = list->next; | |
934 | continue; | |
935 | } | |
936 | ||
937 | /* A while command. Recursively print its subcommands and continue. */ | |
938 | if (list->control_type == while_control) | |
939 | { | |
940 | ui_out_text (uiout, "while "); | |
941 | ui_out_field_fmt (uiout, NULL, "while %s", list->line); | |
942 | ui_out_text (uiout, "\n"); | |
943 | print_command_lines (uiout, *list->body_list, depth + 1); | |
944 | ui_out_field_string (uiout, NULL, "end"); | |
945 | if (depth) | |
946 | ui_out_spaces (uiout, 2 * depth); | |
947 | ui_out_text (uiout, "end\n"); | |
948 | list = list->next; | |
949 | continue; | |
950 | } | |
951 | ||
952 | /* An if command. Recursively print both arms before continueing. */ | |
953 | if (list->control_type == if_control) | |
954 | { | |
955 | ui_out_text (uiout, "if "); | |
956 | ui_out_field_fmt (uiout, NULL, "if %s", list->line); | |
957 | ui_out_text (uiout, "\n"); | |
958 | /* The true arm. */ | |
959 | print_command_lines (uiout, list->body_list[0], depth + 1); | |
960 | ||
961 | /* Show the false arm if it exists. */ | |
962 | if (list->body_count == 2) | |
963 | { | |
964 | if (depth) | |
965 | ui_out_spaces (uiout, 2 * depth); | |
966 | ui_out_field_string (uiout, NULL, "else"); | |
967 | ui_out_text (uiout, "else\n"); | |
968 | print_command_lines (uiout, list->body_list[1], depth + 1); | |
969 | } | |
970 | ||
971 | ui_out_field_string (uiout, NULL, "end"); | |
972 | if (depth) | |
973 | ui_out_spaces (uiout, 2 * depth); | |
974 | ui_out_text (uiout, "end\n"); | |
975 | list = list->next; | |
976 | continue; | |
977 | } | |
978 | ||
979 | /* ignore illegal command type and try next */ | |
980 | list = list->next; | |
981 | } /* while (list) */ | |
982 | } | |
983 | #else | |
c906108c | 984 | void |
fba45db2 KB |
985 | print_command_line (struct command_line *cmd, unsigned int depth, |
986 | struct ui_file *stream) | |
c906108c SS |
987 | { |
988 | unsigned int i; | |
989 | ||
990 | if (depth) | |
991 | { | |
992 | for (i = 0; i < depth; i++) | |
9e086581 | 993 | fputs_filtered (" ", stream); |
c906108c SS |
994 | } |
995 | ||
996 | /* A simple command, print it and return. */ | |
997 | if (cmd->control_type == simple_control) | |
998 | { | |
9e086581 JM |
999 | fputs_filtered (cmd->line, stream); |
1000 | fputs_filtered ("\n", stream); | |
c906108c SS |
1001 | return; |
1002 | } | |
1003 | ||
1004 | /* loop_continue to jump to the start of a while loop, print it | |
1005 | and return. */ | |
1006 | if (cmd->control_type == continue_control) | |
1007 | { | |
9e086581 | 1008 | fputs_filtered ("loop_continue\n", stream); |
c906108c SS |
1009 | return; |
1010 | } | |
1011 | ||
1012 | /* loop_break to break out of a while loop, print it and return. */ | |
1013 | if (cmd->control_type == break_control) | |
1014 | { | |
9e086581 | 1015 | fputs_filtered ("loop_break\n", stream); |
c906108c SS |
1016 | return; |
1017 | } | |
1018 | ||
1019 | /* A while command. Recursively print its subcommands before returning. */ | |
1020 | if (cmd->control_type == while_control) | |
1021 | { | |
1022 | struct command_line *list; | |
9e086581 JM |
1023 | fputs_filtered ("while ", stream); |
1024 | fputs_filtered (cmd->line, stream); | |
1025 | fputs_filtered ("\n", stream); | |
c906108c SS |
1026 | list = *cmd->body_list; |
1027 | while (list) | |
1028 | { | |
9e086581 | 1029 | print_command_line (list, depth + 1, stream); |
c906108c SS |
1030 | list = list->next; |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* An if command. Recursively print both arms before returning. */ | |
1035 | if (cmd->control_type == if_control) | |
1036 | { | |
9e086581 JM |
1037 | fputs_filtered ("if ", stream); |
1038 | fputs_filtered (cmd->line, stream); | |
1039 | fputs_filtered ("\n", stream); | |
c906108c | 1040 | /* The true arm. */ |
9e086581 | 1041 | print_command_line (cmd->body_list[0], depth + 1, stream); |
c906108c SS |
1042 | |
1043 | /* Show the false arm if it exists. */ | |
1044 | if (cmd->body_count == 2) | |
c5aa993b JM |
1045 | { |
1046 | if (depth) | |
1047 | { | |
1048 | for (i = 0; i < depth; i++) | |
1049 | fputs_filtered (" ", stream); | |
1050 | } | |
1051 | fputs_filtered ("else\n", stream); | |
1052 | print_command_line (cmd->body_list[1], depth + 1, stream); | |
1053 | } | |
c906108c SS |
1054 | if (depth) |
1055 | { | |
1056 | for (i = 0; i < depth; i++) | |
9e086581 | 1057 | fputs_filtered (" ", stream); |
c906108c | 1058 | } |
9e086581 | 1059 | fputs_filtered ("end\n", stream); |
c906108c SS |
1060 | } |
1061 | } | |
8b93c638 | 1062 | #endif |
c906108c SS |
1063 | |
1064 | /* Execute the command in CMD. */ | |
1065 | ||
1066 | enum command_control_type | |
fba45db2 | 1067 | execute_control_command (struct command_line *cmd) |
c906108c SS |
1068 | { |
1069 | struct expression *expr; | |
1070 | struct command_line *current; | |
1071 | struct cleanup *old_chain = 0; | |
1072 | value_ptr val; | |
1073 | value_ptr val_mark; | |
1074 | int loop; | |
1075 | enum command_control_type ret; | |
1076 | char *new_line; | |
1077 | ||
1078 | switch (cmd->control_type) | |
1079 | { | |
1080 | case simple_control: | |
1081 | /* A simple command, execute it and return. */ | |
1082 | new_line = insert_args (cmd->line); | |
1083 | if (!new_line) | |
1084 | return invalid_control; | |
c13c43fd | 1085 | old_chain = make_cleanup (free_current_contents, &new_line); |
c906108c SS |
1086 | execute_command (new_line, 0); |
1087 | ret = cmd->control_type; | |
1088 | break; | |
1089 | ||
1090 | case continue_control: | |
1091 | case break_control: | |
1092 | /* Return for "continue", and "break" so we can either | |
c5aa993b | 1093 | continue the loop at the top, or break out. */ |
c906108c SS |
1094 | ret = cmd->control_type; |
1095 | break; | |
1096 | ||
1097 | case while_control: | |
1098 | { | |
1099 | /* Parse the loop control expression for the while statement. */ | |
1100 | new_line = insert_args (cmd->line); | |
1101 | if (!new_line) | |
1102 | return invalid_control; | |
c13c43fd | 1103 | old_chain = make_cleanup (free_current_contents, &new_line); |
c906108c | 1104 | expr = parse_expression (new_line); |
c13c43fd | 1105 | make_cleanup (free_current_contents, &expr); |
c5aa993b | 1106 | |
c906108c SS |
1107 | ret = simple_control; |
1108 | loop = 1; | |
1109 | ||
1110 | /* Keep iterating so long as the expression is true. */ | |
1111 | while (loop == 1) | |
1112 | { | |
1113 | int cond_result; | |
1114 | ||
1115 | QUIT; | |
1116 | ||
1117 | /* Evaluate the expression. */ | |
1118 | val_mark = value_mark (); | |
1119 | val = evaluate_expression (expr); | |
1120 | cond_result = value_true (val); | |
1121 | value_free_to_mark (val_mark); | |
1122 | ||
1123 | /* If the value is false, then break out of the loop. */ | |
1124 | if (!cond_result) | |
1125 | break; | |
1126 | ||
1127 | /* Execute the body of the while statement. */ | |
1128 | current = *cmd->body_list; | |
1129 | while (current) | |
1130 | { | |
1131 | ret = execute_control_command (current); | |
1132 | ||
1133 | /* If we got an error, or a "break" command, then stop | |
1134 | looping. */ | |
1135 | if (ret == invalid_control || ret == break_control) | |
1136 | { | |
1137 | loop = 0; | |
1138 | break; | |
1139 | } | |
1140 | ||
1141 | /* If we got a "continue" command, then restart the loop | |
1142 | at this point. */ | |
1143 | if (ret == continue_control) | |
1144 | break; | |
c5aa993b | 1145 | |
c906108c | 1146 | /* Get the next statement. */ |
c5aa993b | 1147 | current = current->next; |
c906108c SS |
1148 | } |
1149 | } | |
1150 | ||
1151 | /* Reset RET so that we don't recurse the break all the way down. */ | |
1152 | if (ret == break_control) | |
1153 | ret = simple_control; | |
1154 | ||
1155 | break; | |
1156 | } | |
1157 | ||
1158 | case if_control: | |
1159 | { | |
1160 | new_line = insert_args (cmd->line); | |
1161 | if (!new_line) | |
1162 | return invalid_control; | |
c13c43fd | 1163 | old_chain = make_cleanup (free_current_contents, &new_line); |
c906108c SS |
1164 | /* Parse the conditional for the if statement. */ |
1165 | expr = parse_expression (new_line); | |
c13c43fd | 1166 | make_cleanup (free_current_contents, &expr); |
c906108c SS |
1167 | |
1168 | current = NULL; | |
1169 | ret = simple_control; | |
1170 | ||
1171 | /* Evaluate the conditional. */ | |
1172 | val_mark = value_mark (); | |
1173 | val = evaluate_expression (expr); | |
1174 | ||
1175 | /* Choose which arm to take commands from based on the value of the | |
1176 | conditional expression. */ | |
1177 | if (value_true (val)) | |
1178 | current = *cmd->body_list; | |
1179 | else if (cmd->body_count == 2) | |
1180 | current = *(cmd->body_list + 1); | |
1181 | value_free_to_mark (val_mark); | |
1182 | ||
1183 | /* Execute commands in the given arm. */ | |
1184 | while (current) | |
1185 | { | |
1186 | ret = execute_control_command (current); | |
1187 | ||
1188 | /* If we got an error, get out. */ | |
1189 | if (ret != simple_control) | |
1190 | break; | |
1191 | ||
1192 | /* Get the next statement in the body. */ | |
1193 | current = current->next; | |
1194 | } | |
1195 | ||
1196 | break; | |
1197 | } | |
1198 | ||
1199 | default: | |
1200 | warning ("Invalid control type in command structure."); | |
1201 | return invalid_control; | |
1202 | } | |
1203 | ||
1204 | if (old_chain) | |
1205 | do_cleanups (old_chain); | |
1206 | ||
1207 | return ret; | |
1208 | } | |
1209 | ||
1210 | /* "while" command support. Executes a body of statements while the | |
1211 | loop condition is nonzero. */ | |
1212 | ||
1213 | static void | |
fba45db2 | 1214 | while_command (char *arg, int from_tty) |
c906108c SS |
1215 | { |
1216 | struct command_line *command = NULL; | |
1217 | ||
1218 | control_level = 1; | |
1219 | command = get_command_line (while_control, arg); | |
1220 | ||
1221 | if (command == NULL) | |
1222 | return; | |
1223 | ||
1224 | execute_control_command (command); | |
1225 | free_command_lines (&command); | |
1226 | } | |
1227 | ||
1228 | /* "if" command support. Execute either the true or false arm depending | |
1229 | on the value of the if conditional. */ | |
1230 | ||
1231 | static void | |
fba45db2 | 1232 | if_command (char *arg, int from_tty) |
c906108c SS |
1233 | { |
1234 | struct command_line *command = NULL; | |
1235 | ||
1236 | control_level = 1; | |
1237 | command = get_command_line (if_control, arg); | |
1238 | ||
1239 | if (command == NULL) | |
1240 | return; | |
1241 | ||
1242 | execute_control_command (command); | |
1243 | free_command_lines (&command); | |
1244 | } | |
1245 | ||
1246 | /* Cleanup */ | |
1247 | static void | |
e41a3b1a | 1248 | arg_cleanup (void *ignore) |
c906108c SS |
1249 | { |
1250 | struct user_args *oargs = user_args; | |
1251 | if (!user_args) | |
96baa820 | 1252 | internal_error ("Internal error, arg_cleanup called with no user args.\n"); |
c906108c SS |
1253 | |
1254 | user_args = user_args->next; | |
1255 | free (oargs); | |
1256 | } | |
1257 | ||
1258 | /* Bind the incomming arguments for a user defined command to | |
1259 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
1260 | ||
1261 | static struct cleanup * | |
fba45db2 | 1262 | setup_user_args (char *p) |
c906108c SS |
1263 | { |
1264 | struct user_args *args; | |
1265 | struct cleanup *old_chain; | |
1266 | unsigned int arg_count = 0; | |
1267 | ||
c5aa993b | 1268 | args = (struct user_args *) xmalloc (sizeof (struct user_args)); |
c906108c SS |
1269 | memset (args, 0, sizeof (struct user_args)); |
1270 | ||
1271 | args->next = user_args; | |
1272 | user_args = args; | |
1273 | ||
e41a3b1a | 1274 | old_chain = make_cleanup (arg_cleanup, 0/*ignored*/); |
c906108c SS |
1275 | |
1276 | if (p == NULL) | |
1277 | return old_chain; | |
1278 | ||
1279 | while (*p) | |
1280 | { | |
1281 | char *start_arg; | |
1282 | int squote = 0; | |
1283 | int dquote = 0; | |
1284 | int bsquote = 0; | |
1285 | ||
1286 | if (arg_count >= MAXUSERARGS) | |
1287 | { | |
1288 | error ("user defined function may only have %d arguments.\n", | |
1289 | MAXUSERARGS); | |
1290 | return old_chain; | |
1291 | } | |
1292 | ||
1293 | /* Strip whitespace. */ | |
1294 | while (*p == ' ' || *p == '\t') | |
1295 | p++; | |
1296 | ||
1297 | /* P now points to an argument. */ | |
1298 | start_arg = p; | |
1299 | user_args->a[arg_count].arg = p; | |
1300 | ||
1301 | /* Get to the end of this argument. */ | |
1302 | while (*p) | |
1303 | { | |
1304 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
1305 | break; | |
1306 | else | |
1307 | { | |
1308 | if (bsquote) | |
1309 | bsquote = 0; | |
1310 | else if (*p == '\\') | |
1311 | bsquote = 1; | |
1312 | else if (squote) | |
1313 | { | |
1314 | if (*p == '\'') | |
1315 | squote = 0; | |
1316 | } | |
1317 | else if (dquote) | |
1318 | { | |
1319 | if (*p == '"') | |
1320 | dquote = 0; | |
1321 | } | |
1322 | else | |
1323 | { | |
1324 | if (*p == '\'') | |
1325 | squote = 1; | |
1326 | else if (*p == '"') | |
1327 | dquote = 1; | |
1328 | } | |
1329 | p++; | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | user_args->a[arg_count].len = p - start_arg; | |
1334 | arg_count++; | |
1335 | user_args->count++; | |
1336 | } | |
1337 | return old_chain; | |
1338 | } | |
1339 | ||
1340 | /* Given character string P, return a point to the first argument ($arg), | |
1341 | or NULL if P contains no arguments. */ | |
1342 | ||
1343 | static char * | |
fba45db2 | 1344 | locate_arg (char *p) |
c906108c SS |
1345 | { |
1346 | while ((p = strchr (p, '$'))) | |
1347 | { | |
1348 | if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4])) | |
1349 | return p; | |
1350 | p++; | |
1351 | } | |
1352 | return NULL; | |
1353 | } | |
1354 | ||
1355 | /* Insert the user defined arguments stored in user_arg into the $arg | |
1356 | arguments found in line, with the updated copy being placed into nline. */ | |
1357 | ||
1358 | static char * | |
fba45db2 | 1359 | insert_args (char *line) |
c906108c SS |
1360 | { |
1361 | char *p, *save_line, *new_line; | |
1362 | unsigned len, i; | |
1363 | ||
1364 | /* First we need to know how much memory to allocate for the new line. */ | |
1365 | save_line = line; | |
1366 | len = 0; | |
1367 | while ((p = locate_arg (line))) | |
1368 | { | |
1369 | len += p - line; | |
1370 | i = p[4] - '0'; | |
c5aa993b | 1371 | |
c906108c SS |
1372 | if (i >= user_args->count) |
1373 | { | |
1374 | error ("Missing argument %d in user function.\n", i); | |
1375 | return NULL; | |
1376 | } | |
1377 | len += user_args->a[i].len; | |
1378 | line = p + 5; | |
1379 | } | |
1380 | ||
1381 | /* Don't forget the tail. */ | |
1382 | len += strlen (line); | |
1383 | ||
1384 | /* Allocate space for the new line and fill it in. */ | |
c5aa993b | 1385 | new_line = (char *) xmalloc (len + 1); |
c906108c SS |
1386 | if (new_line == NULL) |
1387 | return NULL; | |
1388 | ||
1389 | /* Restore pointer to beginning of old line. */ | |
1390 | line = save_line; | |
1391 | ||
1392 | /* Save pointer to beginning of new line. */ | |
1393 | save_line = new_line; | |
1394 | ||
1395 | while ((p = locate_arg (line))) | |
1396 | { | |
1397 | int i, len; | |
1398 | ||
1399 | memcpy (new_line, line, p - line); | |
1400 | new_line += p - line; | |
1401 | i = p[4] - '0'; | |
1402 | ||
1403 | len = user_args->a[i].len; | |
1404 | if (len) | |
1405 | { | |
1406 | memcpy (new_line, user_args->a[i].arg, len); | |
1407 | new_line += len; | |
1408 | } | |
1409 | line = p + 5; | |
1410 | } | |
1411 | /* Don't forget the tail. */ | |
1412 | strcpy (new_line, line); | |
1413 | ||
1414 | /* Return a pointer to the beginning of the new line. */ | |
1415 | return save_line; | |
1416 | } | |
1417 | ||
1418 | void | |
fba45db2 | 1419 | execute_user_command (struct cmd_list_element *c, char *args) |
c906108c SS |
1420 | { |
1421 | register struct command_line *cmdlines; | |
1422 | struct cleanup *old_chain; | |
1423 | enum command_control_type ret; | |
1424 | ||
1425 | old_chain = setup_user_args (args); | |
1426 | ||
1427 | cmdlines = c->user_commands; | |
1428 | if (cmdlines == 0) | |
1429 | /* Null command */ | |
1430 | return; | |
1431 | ||
1432 | /* Set the instream to 0, indicating execution of a | |
1433 | user-defined function. */ | |
e41a3b1a | 1434 | old_chain = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c SS |
1435 | instream = (FILE *) 0; |
1436 | while (cmdlines) | |
1437 | { | |
1438 | ret = execute_control_command (cmdlines); | |
1439 | if (ret != simple_control && ret != break_control) | |
1440 | { | |
1441 | warning ("Error in control structure.\n"); | |
1442 | break; | |
1443 | } | |
1444 | cmdlines = cmdlines->next; | |
1445 | } | |
1446 | do_cleanups (old_chain); | |
1447 | } | |
1448 | ||
1449 | /* Execute the line P as a command. | |
1450 | Pass FROM_TTY as second argument to the defining function. */ | |
1451 | ||
1452 | void | |
fba45db2 | 1453 | execute_command (char *p, int from_tty) |
c906108c SS |
1454 | { |
1455 | register struct cmd_list_element *c; | |
1456 | register enum language flang; | |
1457 | static int warned = 0; | |
56382845 | 1458 | char *line; |
c906108c | 1459 | /* FIXME: These should really be in an appropriate header file */ |
a14ed312 | 1460 | extern void serial_log_command (const char *); |
c906108c SS |
1461 | |
1462 | free_all_values (); | |
1463 | ||
1464 | /* Force cleanup of any alloca areas if using C alloca instead of | |
1465 | a builtin alloca. */ | |
1466 | alloca (0); | |
1467 | ||
1468 | /* This can happen when command_line_input hits end of file. */ | |
1469 | if (p == NULL) | |
c5aa993b | 1470 | return; |
c906108c SS |
1471 | |
1472 | serial_log_command (p); | |
1473 | ||
c5aa993b JM |
1474 | while (*p == ' ' || *p == '\t') |
1475 | p++; | |
c906108c SS |
1476 | if (*p) |
1477 | { | |
1478 | char *arg; | |
56382845 | 1479 | line = p; |
eb2f494a | 1480 | |
c906108c | 1481 | c = lookup_cmd (&p, cmdlist, "", 0, 1); |
43ff13b4 JM |
1482 | |
1483 | /* If the target is running, we allow only a limited set of | |
1484 | commands. */ | |
6426a772 | 1485 | if (event_loop_p && target_can_async_p () && target_executing) |
43ff13b4 JM |
1486 | if (!strcmp (c->name, "help") |
1487 | && !strcmp (c->name, "pwd") | |
1488 | && !strcmp (c->name, "show") | |
1489 | && !strcmp (c->name, "stop")) | |
1490 | error ("Cannot execute this command while the target is running."); | |
1491 | ||
c906108c SS |
1492 | /* Pass null arg rather than an empty one. */ |
1493 | arg = *p ? p : 0; | |
1494 | ||
1495 | /* Clear off trailing whitespace, except for set and complete command. */ | |
1496 | if (arg && c->type != set_cmd && c->function.cfunc != complete_command) | |
1497 | { | |
1498 | p = arg + strlen (arg) - 1; | |
1499 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
1500 | p--; | |
1501 | *(p + 1) = '\0'; | |
1502 | } | |
eb2f494a | 1503 | |
73bc900d FN |
1504 | /* If this command has been pre-hooked, run the hook first. */ |
1505 | if ((c->hook_pre) && (!c->hook_in)) | |
1506 | { | |
1507 | c->hook_in = 1; /* Prevent recursive hooking */ | |
1508 | execute_user_command (c->hook_pre, (char *) 0); | |
1509 | c->hook_in = 0; /* Allow hook to work again once it is complete */ | |
1510 | } | |
c906108c | 1511 | |
56382845 | 1512 | if (c->flags & DEPRECATED_WARN_USER) |
eb2f494a | 1513 | deprecated_cmd_warning (&line); |
56382845 | 1514 | |
c906108c SS |
1515 | if (c->class == class_user) |
1516 | execute_user_command (c, arg); | |
1517 | else if (c->type == set_cmd || c->type == show_cmd) | |
1518 | do_setshow_command (arg, from_tty & caution, c); | |
1519 | else if (c->function.cfunc == NO_FUNCTION) | |
1520 | error ("That is not a command, just a help topic."); | |
1521 | else if (call_command_hook) | |
1522 | call_command_hook (c, arg, from_tty & caution); | |
1523 | else | |
1524 | (*c->function.cfunc) (arg, from_tty & caution); | |
73bc900d FN |
1525 | |
1526 | /* If this command has been post-hooked, run the hook last. */ | |
1527 | if ((c->hook_post) && (!c->hook_in)) | |
1528 | { | |
1529 | c->hook_in = 1; /* Prevent recursive hooking */ | |
1530 | execute_user_command (c->hook_post, (char *) 0); | |
1531 | c->hook_in = 0; /* allow hook to work again once it is complete */ | |
1532 | } | |
1533 | ||
c5aa993b | 1534 | } |
c906108c SS |
1535 | |
1536 | /* Tell the user if the language has changed (except first time). */ | |
1537 | if (current_language != expected_language) | |
c5aa993b JM |
1538 | { |
1539 | if (language_mode == language_mode_auto) | |
1540 | { | |
1541 | language_info (1); /* Print what changed. */ | |
1542 | } | |
1543 | warned = 0; | |
c906108c | 1544 | } |
c906108c SS |
1545 | |
1546 | /* Warn the user if the working language does not match the | |
1547 | language of the current frame. Only warn the user if we are | |
1548 | actually running the program, i.e. there is a stack. */ | |
1549 | /* FIXME: This should be cacheing the frame and only running when | |
1550 | the frame changes. */ | |
1551 | ||
1552 | if (target_has_stack) | |
1553 | { | |
1554 | flang = get_frame_language (); | |
1555 | if (!warned | |
1556 | && flang != language_unknown | |
1557 | && flang != current_language->la_language) | |
1558 | { | |
1559 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1560 | warned = 1; | |
1561 | } | |
1562 | } | |
1563 | } | |
1564 | ||
c906108c SS |
1565 | /* Read commands from `instream' and execute them |
1566 | until end of file or error reading instream. */ | |
1567 | ||
1568 | void | |
fba45db2 | 1569 | command_loop (void) |
c906108c SS |
1570 | { |
1571 | struct cleanup *old_chain; | |
1572 | char *command; | |
1573 | int stdin_is_tty = ISATTY (stdin); | |
1574 | long time_at_cmd_start; | |
1575 | #ifdef HAVE_SBRK | |
1576 | long space_at_cmd_start = 0; | |
1577 | #endif | |
1578 | extern int display_time; | |
1579 | extern int display_space; | |
1580 | ||
1581 | while (instream && !feof (instream)) | |
1582 | { | |
1583 | #if defined(TUI) | |
1584 | extern int insert_mode; | |
1585 | #endif | |
1586 | if (window_hook && instream == stdin) | |
0f71a2f6 | 1587 | (*window_hook) (instream, get_prompt ()); |
c906108c SS |
1588 | |
1589 | quit_flag = 0; | |
1590 | if (instream == stdin && stdin_is_tty) | |
1591 | reinitialize_more_filter (); | |
e2273c6d | 1592 | old_chain = make_cleanup (null_cleanup, 0); |
c906108c SS |
1593 | |
1594 | #if defined(TUI) | |
1595 | /* A bit of paranoia: I want to make sure the "insert_mode" global | |
1596 | * is clear except when it is being used for command-line editing | |
1597 | * (see tuiIO.c, utils.c); otherwise normal output will | |
1598 | * get messed up in the TUI. So clear it before/after | |
1599 | * the command-line-input call. - RT | |
1600 | */ | |
1601 | insert_mode = 0; | |
1602 | #endif | |
1603 | /* Get a command-line. This calls the readline package. */ | |
c5aa993b | 1604 | command = command_line_input (instream == stdin ? |
0f71a2f6 | 1605 | get_prompt () : (char *) NULL, |
c906108c SS |
1606 | instream == stdin, "prompt"); |
1607 | #if defined(TUI) | |
1608 | insert_mode = 0; | |
1609 | #endif | |
1610 | if (command == 0) | |
1611 | return; | |
1612 | ||
1613 | time_at_cmd_start = get_run_time (); | |
1614 | ||
1615 | if (display_space) | |
1616 | { | |
1617 | #ifdef HAVE_SBRK | |
1618 | extern char **environ; | |
1619 | char *lim = (char *) sbrk (0); | |
1620 | ||
1621 | space_at_cmd_start = (long) (lim - (char *) &environ); | |
1622 | #endif | |
1623 | } | |
1624 | ||
1625 | execute_command (command, instream == stdin); | |
1626 | /* Do any commands attached to breakpoint we stopped at. */ | |
1627 | bpstat_do_actions (&stop_bpstat); | |
1628 | do_cleanups (old_chain); | |
1629 | ||
1630 | if (display_time) | |
1631 | { | |
1632 | long cmd_time = get_run_time () - time_at_cmd_start; | |
1633 | ||
1634 | printf_unfiltered ("Command execution time: %ld.%06ld\n", | |
1635 | cmd_time / 1000000, cmd_time % 1000000); | |
1636 | } | |
1637 | ||
1638 | if (display_space) | |
1639 | { | |
1640 | #ifdef HAVE_SBRK | |
1641 | extern char **environ; | |
1642 | char *lim = (char *) sbrk (0); | |
1643 | long space_now = lim - (char *) &environ; | |
1644 | long space_diff = space_now - space_at_cmd_start; | |
1645 | ||
1646 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", | |
1647 | space_now, | |
1648 | (space_diff >= 0 ? '+' : '-'), | |
1649 | space_diff); | |
1650 | #endif | |
1651 | } | |
1652 | } | |
1653 | } | |
392a587b | 1654 | |
8b93c638 JM |
1655 | /* Read commands from `instream' and execute them until end of file or |
1656 | error reading instream. This command loop doesnt care about any | |
1657 | such things as displaying time and space usage. If the user asks | |
1658 | for those, they won't work. */ | |
1659 | void | |
10689f25 KB |
1660 | simplified_command_loop (char *(*read_input_func) (char *), |
1661 | void (*execute_command_func) (char *, int)) | |
8b93c638 JM |
1662 | { |
1663 | struct cleanup *old_chain; | |
1664 | char *command; | |
1665 | int stdin_is_tty = ISATTY (stdin); | |
1666 | ||
1667 | while (instream && !feof (instream)) | |
1668 | { | |
1669 | quit_flag = 0; | |
1670 | if (instream == stdin && stdin_is_tty) | |
1671 | reinitialize_more_filter (); | |
e2273c6d | 1672 | old_chain = make_cleanup (null_cleanup, 0); |
8b93c638 JM |
1673 | |
1674 | /* Get a command-line. */ | |
1675 | command = (*read_input_func) (instream == stdin ? | |
1676 | get_prompt () : (char *) NULL); | |
1677 | ||
1678 | if (command == 0) | |
1679 | return; | |
1680 | ||
1681 | (*execute_command_func) (command, instream == stdin); | |
1682 | ||
1683 | /* Do any commands attached to breakpoint we stopped at. */ | |
1684 | bpstat_do_actions (&stop_bpstat); | |
1685 | ||
1686 | do_cleanups (old_chain); | |
1687 | } | |
1688 | } | |
9e0b60a8 JM |
1689 | \f |
1690 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1691 | ||
1692 | void | |
fba45db2 | 1693 | dont_repeat (void) |
9e0b60a8 JM |
1694 | { |
1695 | if (server_command) | |
1696 | return; | |
1697 | ||
1698 | /* If we aren't reading from standard input, we are saving the last | |
1699 | thing read from stdin in line and don't want to delete it. Null lines | |
1700 | won't repeat here in any case. */ | |
1701 | if (instream == stdin) | |
1702 | *line = 0; | |
1703 | } | |
1704 | \f | |
1705 | /* Read a line from the stream "instream" without command line editing. | |
1706 | ||
1707 | It prints PROMPT_ARG once at the start. | |
1708 | Action is compatible with "readline", e.g. space for the result is | |
1709 | malloc'd and should be freed by the caller. | |
1710 | ||
1711 | A NULL return means end of file. */ | |
1712 | char * | |
fba45db2 | 1713 | gdb_readline (char *prompt_arg) |
9e0b60a8 JM |
1714 | { |
1715 | int c; | |
1716 | char *result; | |
1717 | int input_index = 0; | |
1718 | int result_size = 80; | |
1719 | ||
1720 | if (prompt_arg) | |
1721 | { | |
1722 | /* Don't use a _filtered function here. It causes the assumed | |
c5aa993b JM |
1723 | character position to be off, since the newline we read from |
1724 | the user is not accounted for. */ | |
9e0b60a8 JM |
1725 | fputs_unfiltered (prompt_arg, gdb_stdout); |
1726 | #ifdef MPW | |
1727 | /* Move to a new line so the entered line doesn't have a prompt | |
c5aa993b | 1728 | on the front of it. */ |
9e0b60a8 JM |
1729 | fputs_unfiltered ("\n", gdb_stdout); |
1730 | #endif /* MPW */ | |
1731 | gdb_flush (gdb_stdout); | |
1732 | } | |
1733 | ||
1734 | result = (char *) xmalloc (result_size); | |
1735 | ||
1736 | while (1) | |
1737 | { | |
1738 | /* Read from stdin if we are executing a user defined command. | |
c5aa993b | 1739 | This is the right thing for prompt_for_continue, at least. */ |
9e0b60a8 JM |
1740 | c = fgetc (instream ? instream : stdin); |
1741 | ||
1742 | if (c == EOF) | |
1743 | { | |
1744 | if (input_index > 0) | |
1745 | /* The last line does not end with a newline. Return it, and | |
1746 | if we are called again fgetc will still return EOF and | |
1747 | we'll return NULL then. */ | |
1748 | break; | |
1749 | free (result); | |
1750 | return NULL; | |
1751 | } | |
1752 | ||
1753 | if (c == '\n') | |
1754 | #ifndef CRLF_SOURCE_FILES | |
1755 | break; | |
1756 | #else | |
1757 | { | |
1758 | if (input_index > 0 && result[input_index - 1] == '\r') | |
1759 | input_index--; | |
1760 | break; | |
1761 | } | |
1762 | #endif | |
1763 | ||
1764 | result[input_index++] = c; | |
1765 | while (input_index >= result_size) | |
1766 | { | |
1767 | result_size *= 2; | |
1768 | result = (char *) xrealloc (result, result_size); | |
1769 | } | |
1770 | } | |
1771 | ||
1772 | result[input_index++] = '\0'; | |
1773 | return result; | |
1774 | } | |
1775 | ||
1776 | /* Variables which control command line editing and history | |
1777 | substitution. These variables are given default values at the end | |
1778 | of this file. */ | |
1779 | static int command_editing_p; | |
1780 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
1781 | gdb to use the event loop as the default command loop and we merge | |
1782 | event-top.c into this file, top.c */ | |
1783 | /* static */ int history_expansion_p; | |
1784 | static int write_history_p; | |
1785 | static int history_size; | |
1786 | static char *history_filename; | |
1787 | ||
1788 | /* readline uses the word breaks for two things: | |
1789 | (1) In figuring out where to point the TEXT parameter to the | |
1790 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1791 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1792 | it does affect how much stuff M-? lists. | |
1793 | (2) If one of the matches contains a word break character, readline | |
1794 | will quote it. That's why we switch between | |
1795 | gdb_completer_word_break_characters and | |
1796 | gdb_completer_command_word_break_characters. I'm not sure when | |
1797 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1798 | ||
1799 | /* Variables which are necessary for fancy command line editing. */ | |
1800 | char *gdb_completer_word_break_characters = | |
c5aa993b | 1801 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
9e0b60a8 JM |
1802 | |
1803 | /* When completing on command names, we remove '-' from the list of | |
1804 | word break characters, since we use it in command names. If the | |
1805 | readline library sees one in any of the current completion strings, | |
1806 | it thinks that the string needs to be quoted and automatically supplies | |
1807 | a leading quote. */ | |
1808 | char *gdb_completer_command_word_break_characters = | |
c5aa993b | 1809 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; |
9e0b60a8 | 1810 | |
ae678129 EZ |
1811 | /* When completing on file names, we remove from the list of word |
1812 | break characters any characters that are commonly used in file | |
1813 | names, such as '-', '+', '~', etc. Otherwise, readline displays | |
1814 | incorrect completion candidates. */ | |
1815 | char *gdb_completer_file_name_break_characters = " \t\n*|\"';:?/><"; | |
1816 | ||
9e0b60a8 JM |
1817 | /* Characters that can be used to quote completion strings. Note that we |
1818 | can't include '"' because the gdb C parser treats such quoted sequences | |
1819 | as strings. */ | |
1820 | char *gdb_completer_quote_characters = | |
c5aa993b | 1821 | "'"; |
9e0b60a8 JM |
1822 | |
1823 | /* Functions that are used as part of the fancy command line editing. */ | |
1824 | ||
1825 | /* This can be used for functions which don't want to complete on symbols | |
1826 | but don't want to complete on anything else either. */ | |
1827 | /* ARGSUSED */ | |
1828 | char ** | |
fba45db2 | 1829 | noop_completer (char *text, char *prefix) |
9e0b60a8 JM |
1830 | { |
1831 | return NULL; | |
1832 | } | |
1833 | ||
9e0b60a8 JM |
1834 | /* Line completion interface function for readline. */ |
1835 | ||
1836 | static char * | |
fba45db2 | 1837 | readline_line_completion_function (char *text, int matches) |
9e0b60a8 JM |
1838 | { |
1839 | return line_completion_function (text, matches, rl_line_buffer, rl_point); | |
1840 | } | |
1841 | ||
9e0b60a8 JM |
1842 | \f |
1843 | #ifdef STOP_SIGNAL | |
1844 | static void | |
fba45db2 | 1845 | stop_sig (int signo) |
9e0b60a8 JM |
1846 | { |
1847 | #if STOP_SIGNAL == SIGTSTP | |
1848 | signal (SIGTSTP, SIG_DFL); | |
1849 | sigsetmask (0); | |
1850 | kill (getpid (), SIGTSTP); | |
1851 | signal (SIGTSTP, stop_sig); | |
1852 | #else | |
1853 | signal (STOP_SIGNAL, stop_sig); | |
1854 | #endif | |
1855 | printf_unfiltered ("%s", get_prompt ()); | |
1856 | gdb_flush (gdb_stdout); | |
1857 | ||
1858 | /* Forget about any previous command -- null line now will do nothing. */ | |
1859 | dont_repeat (); | |
1860 | } | |
1861 | #endif /* STOP_SIGNAL */ | |
1862 | ||
1863 | /* Initialize signal handlers. */ | |
1864 | static void | |
fba45db2 | 1865 | do_nothing (int signo) |
9e0b60a8 JM |
1866 | { |
1867 | /* Under System V the default disposition of a signal is reinstated after | |
1868 | the signal is caught and delivered to an application process. On such | |
1869 | systems one must restore the replacement signal handler if one wishes | |
1870 | to continue handling the signal in one's program. On BSD systems this | |
1871 | is not needed but it is harmless, and it simplifies the code to just do | |
1872 | it unconditionally. */ | |
1873 | signal (signo, do_nothing); | |
1874 | } | |
1875 | ||
1876 | static void | |
fba45db2 | 1877 | init_signals (void) |
9e0b60a8 JM |
1878 | { |
1879 | signal (SIGINT, request_quit); | |
1880 | ||
1881 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed | |
1882 | to the inferior and breakpoints will be ignored. */ | |
1883 | #ifdef SIGTRAP | |
1884 | signal (SIGTRAP, SIG_DFL); | |
1885 | #endif | |
1886 | ||
1887 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
1888 | passed to the inferior, which we don't want. It would be | |
1889 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
1890 | on BSD4.3 systems using vfork, that can affect the | |
1891 | GDB process as well as the inferior (the signal handling tables | |
1892 | might be in memory, shared between the two). Since we establish | |
1893 | a handler for SIGQUIT, when we call exec it will set the signal | |
1894 | to SIG_DFL for us. */ | |
1895 | signal (SIGQUIT, do_nothing); | |
1896 | #ifdef SIGHUP | |
1897 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
1898 | signal (SIGHUP, disconnect); | |
1899 | #endif | |
1900 | signal (SIGFPE, float_handler); | |
1901 | ||
1902 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1903 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1904 | #endif | |
1905 | } | |
1906 | \f | |
1907 | /* Read one line from the command input stream `instream' | |
1908 | into the local static buffer `linebuffer' (whose current length | |
1909 | is `linelength'). | |
1910 | The buffer is made bigger as necessary. | |
1911 | Returns the address of the start of the line. | |
1912 | ||
1913 | NULL is returned for end of file. | |
1914 | ||
1915 | *If* the instream == stdin & stdin is a terminal, the line read | |
1916 | is copied into the file line saver (global var char *line, | |
1917 | length linesize) so that it can be duplicated. | |
1918 | ||
1919 | This routine either uses fancy command line editing or | |
1920 | simple input as the user has requested. */ | |
1921 | ||
1922 | char * | |
fba45db2 | 1923 | command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) |
9e0b60a8 JM |
1924 | { |
1925 | static char *linebuffer = 0; | |
1926 | static unsigned linelength = 0; | |
1927 | register char *p; | |
1928 | char *p1; | |
1929 | char *rl; | |
1930 | char *local_prompt = prompt_arg; | |
1931 | char *nline; | |
1932 | char got_eof = 0; | |
1933 | ||
1934 | /* The annotation suffix must be non-NULL. */ | |
1935 | if (annotation_suffix == NULL) | |
1936 | annotation_suffix = ""; | |
1937 | ||
1938 | if (annotation_level > 1 && instream == stdin) | |
1939 | { | |
1940 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
1941 | + strlen (annotation_suffix) + 40); | |
1942 | if (prompt_arg == NULL) | |
1943 | local_prompt[0] = '\0'; | |
1944 | else | |
1945 | strcpy (local_prompt, prompt_arg); | |
1946 | strcat (local_prompt, "\n\032\032"); | |
1947 | strcat (local_prompt, annotation_suffix); | |
1948 | strcat (local_prompt, "\n"); | |
1949 | } | |
1950 | ||
1951 | if (linebuffer == 0) | |
1952 | { | |
1953 | linelength = 80; | |
1954 | linebuffer = (char *) xmalloc (linelength); | |
1955 | } | |
1956 | ||
1957 | p = linebuffer; | |
1958 | ||
1959 | /* Control-C quits instantly if typed while in this loop | |
1960 | since it should not wait until the user types a newline. */ | |
1961 | immediate_quit++; | |
1962 | #ifdef STOP_SIGNAL | |
1963 | if (job_control) | |
1964 | { | |
6426a772 | 1965 | if (event_loop_p) |
9e0b60a8 JM |
1966 | signal (STOP_SIGNAL, handle_stop_sig); |
1967 | else | |
1968 | signal (STOP_SIGNAL, stop_sig); | |
1969 | } | |
1970 | #endif | |
1971 | ||
1972 | while (1) | |
1973 | { | |
1974 | /* Make sure that all output has been output. Some machines may let | |
c5aa993b | 1975 | you get away with leaving out some of the gdb_flush, but not all. */ |
9e0b60a8 JM |
1976 | wrap_here (""); |
1977 | gdb_flush (gdb_stdout); | |
1978 | gdb_flush (gdb_stderr); | |
1979 | ||
1980 | if (source_file_name != NULL) | |
1981 | { | |
1982 | ++source_line_number; | |
1983 | sprintf (source_error, | |
1984 | "%s%s:%d: Error in sourced command file:\n", | |
1985 | source_pre_error, | |
1986 | source_file_name, | |
1987 | source_line_number); | |
1988 | error_pre_print = source_error; | |
1989 | } | |
1990 | ||
1991 | if (annotation_level > 1 && instream == stdin) | |
1992 | { | |
1993 | printf_unfiltered ("\n\032\032pre-"); | |
1994 | printf_unfiltered (annotation_suffix); | |
1995 | printf_unfiltered ("\n"); | |
1996 | } | |
1997 | ||
1998 | /* Don't use fancy stuff if not talking to stdin. */ | |
1999 | if (readline_hook && instream == NULL) | |
2000 | { | |
2001 | rl = (*readline_hook) (local_prompt); | |
2002 | } | |
2003 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
2004 | { | |
2005 | rl = readline (local_prompt); | |
2006 | } | |
2007 | else | |
2008 | { | |
2009 | rl = gdb_readline (local_prompt); | |
2010 | } | |
2011 | ||
2012 | if (annotation_level > 1 && instream == stdin) | |
2013 | { | |
2014 | printf_unfiltered ("\n\032\032post-"); | |
2015 | printf_unfiltered (annotation_suffix); | |
2016 | printf_unfiltered ("\n"); | |
2017 | } | |
2018 | ||
2019 | if (!rl || rl == (char *) EOF) | |
2020 | { | |
2021 | got_eof = 1; | |
2022 | break; | |
2023 | } | |
c5aa993b | 2024 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
9e0b60a8 | 2025 | { |
c5aa993b | 2026 | linelength = strlen (rl) + 1 + (p - linebuffer); |
9e0b60a8 JM |
2027 | nline = (char *) xrealloc (linebuffer, linelength); |
2028 | p += nline - linebuffer; | |
2029 | linebuffer = nline; | |
2030 | } | |
2031 | p1 = rl; | |
2032 | /* Copy line. Don't copy null at end. (Leaves line alone | |
2033 | if this was just a newline) */ | |
2034 | while (*p1) | |
2035 | *p++ = *p1++; | |
2036 | ||
c5aa993b | 2037 | free (rl); /* Allocated in readline. */ |
9e0b60a8 JM |
2038 | |
2039 | if (p == linebuffer || *(p - 1) != '\\') | |
2040 | break; | |
2041 | ||
2042 | p--; /* Put on top of '\'. */ | |
2043 | local_prompt = (char *) 0; | |
c5aa993b | 2044 | } |
9e0b60a8 JM |
2045 | |
2046 | #ifdef STOP_SIGNAL | |
2047 | if (job_control) | |
2048 | signal (STOP_SIGNAL, SIG_DFL); | |
2049 | #endif | |
2050 | immediate_quit--; | |
2051 | ||
2052 | if (got_eof) | |
2053 | return NULL; | |
2054 | ||
2055 | #define SERVER_COMMAND_LENGTH 7 | |
2056 | server_command = | |
2057 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
c5aa993b | 2058 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); |
9e0b60a8 JM |
2059 | if (server_command) |
2060 | { | |
2061 | /* Note that we don't set `line'. Between this and the check in | |
c5aa993b JM |
2062 | dont_repeat, this insures that repeating will still do the |
2063 | right thing. */ | |
9e0b60a8 JM |
2064 | *p = '\0'; |
2065 | return linebuffer + SERVER_COMMAND_LENGTH; | |
2066 | } | |
2067 | ||
2068 | /* Do history expansion if that is wished. */ | |
2069 | if (history_expansion_p && instream == stdin | |
2070 | && ISATTY (instream)) | |
2071 | { | |
2072 | char *history_value; | |
2073 | int expanded; | |
2074 | ||
2075 | *p = '\0'; /* Insert null now. */ | |
2076 | expanded = history_expand (linebuffer, &history_value); | |
2077 | if (expanded) | |
2078 | { | |
2079 | /* Print the changes. */ | |
2080 | printf_unfiltered ("%s\n", history_value); | |
2081 | ||
2082 | /* If there was an error, call this function again. */ | |
2083 | if (expanded < 0) | |
2084 | { | |
2085 | free (history_value); | |
2086 | return command_line_input (prompt_arg, repeat, annotation_suffix); | |
2087 | } | |
2088 | if (strlen (history_value) > linelength) | |
2089 | { | |
2090 | linelength = strlen (history_value) + 1; | |
2091 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
2092 | } | |
2093 | strcpy (linebuffer, history_value); | |
c5aa993b | 2094 | p = linebuffer + strlen (linebuffer); |
9e0b60a8 JM |
2095 | free (history_value); |
2096 | } | |
2097 | } | |
2098 | ||
2099 | /* If we just got an empty line, and that is supposed | |
2100 | to repeat the previous command, return the value in the | |
2101 | global buffer. */ | |
2102 | if (repeat && p == linebuffer) | |
2103 | return line; | |
c5aa993b | 2104 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); |
9e0b60a8 JM |
2105 | if (repeat && !*p1) |
2106 | return line; | |
2107 | ||
2108 | *p = 0; | |
2109 | ||
2110 | /* Add line to history if appropriate. */ | |
2111 | if (instream == stdin | |
2112 | && ISATTY (stdin) && *linebuffer) | |
2113 | add_history (linebuffer); | |
2114 | ||
2115 | /* Note: lines consisting solely of comments are added to the command | |
2116 | history. This is useful when you type a command, and then | |
2117 | realize you don't want to execute it quite yet. You can comment | |
2118 | out the command and then later fetch it from the value history | |
2119 | and remove the '#'. The kill ring is probably better, but some | |
2120 | people are in the habit of commenting things out. */ | |
2121 | if (*p1 == '#') | |
c5aa993b | 2122 | *p1 = '\0'; /* Found a comment. */ |
9e0b60a8 JM |
2123 | |
2124 | /* Save into global buffer if appropriate. */ | |
2125 | if (repeat) | |
2126 | { | |
2127 | if (linelength > linesize) | |
2128 | { | |
2129 | line = xrealloc (line, linelength); | |
2130 | linesize = linelength; | |
2131 | } | |
2132 | strcpy (line, linebuffer); | |
2133 | return line; | |
2134 | } | |
2135 | ||
2136 | return linebuffer; | |
2137 | } | |
2138 | \f | |
2139 | ||
2140 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
2141 | code bodies. This is typically used when we encounter an "else" | |
2142 | clause for an "if" command. */ | |
2143 | ||
2144 | static void | |
fba45db2 | 2145 | realloc_body_list (struct command_line *command, int new_length) |
9e0b60a8 JM |
2146 | { |
2147 | int n; | |
2148 | struct command_line **body_list; | |
2149 | ||
2150 | n = command->body_count; | |
2151 | ||
2152 | /* Nothing to do? */ | |
2153 | if (new_length <= n) | |
2154 | return; | |
2155 | ||
2156 | body_list = (struct command_line **) | |
2157 | xmalloc (sizeof (struct command_line *) * new_length); | |
2158 | ||
2159 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
2160 | ||
2161 | free (command->body_list); | |
2162 | command->body_list = body_list; | |
2163 | command->body_count = new_length; | |
2164 | } | |
2165 | ||
2166 | /* Read one line from the input stream. If the command is an "else" or | |
2167 | "end", return such an indication to the caller. */ | |
2168 | ||
2169 | static enum misc_command_type | |
fba45db2 | 2170 | read_next_line (struct command_line **command) |
9e0b60a8 JM |
2171 | { |
2172 | char *p, *p1, *prompt_ptr, control_prompt[256]; | |
2173 | int i = 0; | |
2174 | ||
2175 | if (control_level >= 254) | |
2176 | error ("Control nesting too deep!\n"); | |
2177 | ||
2178 | /* Set a prompt based on the nesting of the control commands. */ | |
2179 | if (instream == stdin || (instream == 0 && readline_hook != NULL)) | |
2180 | { | |
2181 | for (i = 0; i < control_level; i++) | |
2182 | control_prompt[i] = ' '; | |
2183 | control_prompt[i] = '>'; | |
c5aa993b JM |
2184 | control_prompt[i + 1] = '\0'; |
2185 | prompt_ptr = (char *) &control_prompt[0]; | |
9e0b60a8 JM |
2186 | } |
2187 | else | |
2188 | prompt_ptr = NULL; | |
2189 | ||
2190 | p = command_line_input (prompt_ptr, instream == stdin, "commands"); | |
2191 | ||
2192 | /* Not sure what to do here. */ | |
2193 | if (p == NULL) | |
2194 | return end_command; | |
2195 | ||
2196 | /* Strip leading and trailing whitespace. */ | |
2197 | while (*p == ' ' || *p == '\t') | |
2198 | p++; | |
2199 | ||
2200 | p1 = p + strlen (p); | |
2201 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) | |
2202 | p1--; | |
2203 | ||
2204 | /* Blanks and comments don't really do anything, but we need to | |
2205 | distinguish them from else, end and other commands which can be | |
2206 | executed. */ | |
2207 | if (p1 == p || p[0] == '#') | |
2208 | return nop_command; | |
c5aa993b | 2209 | |
9e0b60a8 JM |
2210 | /* Is this the end of a simple, while, or if control structure? */ |
2211 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
2212 | return end_command; | |
2213 | ||
2214 | /* Is the else clause of an if control structure? */ | |
2215 | if (p1 - p == 4 && !strncmp (p, "else", 4)) | |
2216 | return else_command; | |
2217 | ||
2218 | /* Check for while, if, break, continue, etc and build a new command | |
2219 | line structure for them. */ | |
2220 | if (p1 - p > 5 && !strncmp (p, "while", 5)) | |
2221 | *command = build_command_line (while_control, p + 6); | |
2222 | else if (p1 - p > 2 && !strncmp (p, "if", 2)) | |
2223 | *command = build_command_line (if_control, p + 3); | |
2224 | else if (p1 - p == 10 && !strncmp (p, "loop_break", 10)) | |
2225 | { | |
2226 | *command = (struct command_line *) | |
2227 | xmalloc (sizeof (struct command_line)); | |
2228 | (*command)->next = NULL; | |
2229 | (*command)->line = NULL; | |
2230 | (*command)->control_type = break_control; | |
2231 | (*command)->body_count = 0; | |
2232 | (*command)->body_list = NULL; | |
2233 | } | |
2234 | else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13)) | |
2235 | { | |
2236 | *command = (struct command_line *) | |
2237 | xmalloc (sizeof (struct command_line)); | |
2238 | (*command)->next = NULL; | |
2239 | (*command)->line = NULL; | |
2240 | (*command)->control_type = continue_control; | |
2241 | (*command)->body_count = 0; | |
2242 | (*command)->body_list = NULL; | |
2243 | } | |
2244 | else | |
2245 | { | |
2246 | /* A normal command. */ | |
2247 | *command = (struct command_line *) | |
2248 | xmalloc (sizeof (struct command_line)); | |
2249 | (*command)->next = NULL; | |
2250 | (*command)->line = savestring (p, p1 - p); | |
2251 | (*command)->control_type = simple_control; | |
2252 | (*command)->body_count = 0; | |
2253 | (*command)->body_list = NULL; | |
c5aa993b | 2254 | } |
9e0b60a8 JM |
2255 | |
2256 | /* Nothing special. */ | |
2257 | return ok_command; | |
2258 | } | |
2259 | ||
2260 | /* Recursively read in the control structures and create a command_line | |
2261 | structure from them. | |
2262 | ||
2263 | The parent_control parameter is the control structure in which the | |
2264 | following commands are nested. */ | |
2265 | ||
2266 | static enum command_control_type | |
fba45db2 | 2267 | recurse_read_control_structure (struct command_line *current_cmd) |
9e0b60a8 JM |
2268 | { |
2269 | int current_body, i; | |
2270 | enum misc_command_type val; | |
2271 | enum command_control_type ret; | |
2272 | struct command_line **body_ptr, *child_tail, *next; | |
2273 | ||
2274 | child_tail = NULL; | |
2275 | current_body = 1; | |
2276 | ||
2277 | /* Sanity checks. */ | |
2278 | if (current_cmd->control_type == simple_control) | |
2279 | { | |
2280 | error ("Recursed on a simple control type\n"); | |
2281 | return invalid_control; | |
2282 | } | |
2283 | ||
2284 | if (current_body > current_cmd->body_count) | |
2285 | { | |
2286 | error ("Allocated body is smaller than this command type needs\n"); | |
2287 | return invalid_control; | |
2288 | } | |
2289 | ||
2290 | /* Read lines from the input stream and build control structures. */ | |
2291 | while (1) | |
2292 | { | |
2293 | dont_repeat (); | |
2294 | ||
2295 | next = NULL; | |
2296 | val = read_next_line (&next); | |
2297 | ||
2298 | /* Just skip blanks and comments. */ | |
2299 | if (val == nop_command) | |
2300 | continue; | |
2301 | ||
2302 | if (val == end_command) | |
2303 | { | |
2304 | if (current_cmd->control_type == while_control | |
2305 | || current_cmd->control_type == if_control) | |
2306 | { | |
2307 | /* Success reading an entire control structure. */ | |
2308 | ret = simple_control; | |
2309 | break; | |
2310 | } | |
2311 | else | |
2312 | { | |
2313 | ret = invalid_control; | |
2314 | break; | |
2315 | } | |
2316 | } | |
c5aa993b | 2317 | |
9e0b60a8 JM |
2318 | /* Not the end of a control structure. */ |
2319 | if (val == else_command) | |
2320 | { | |
2321 | if (current_cmd->control_type == if_control | |
2322 | && current_body == 1) | |
2323 | { | |
2324 | realloc_body_list (current_cmd, 2); | |
2325 | current_body = 2; | |
2326 | child_tail = NULL; | |
2327 | continue; | |
2328 | } | |
2329 | else | |
2330 | { | |
2331 | ret = invalid_control; | |
2332 | break; | |
2333 | } | |
2334 | } | |
2335 | ||
2336 | if (child_tail) | |
2337 | { | |
2338 | child_tail->next = next; | |
2339 | } | |
2340 | else | |
2341 | { | |
2342 | body_ptr = current_cmd->body_list; | |
2343 | for (i = 1; i < current_body; i++) | |
2344 | body_ptr++; | |
2345 | ||
2346 | *body_ptr = next; | |
2347 | ||
2348 | } | |
2349 | ||
2350 | child_tail = next; | |
2351 | ||
2352 | /* If the latest line is another control structure, then recurse | |
c5aa993b | 2353 | on it. */ |
9e0b60a8 JM |
2354 | if (next->control_type == while_control |
2355 | || next->control_type == if_control) | |
2356 | { | |
2357 | control_level++; | |
2358 | ret = recurse_read_control_structure (next); | |
2359 | control_level--; | |
2360 | ||
2361 | if (ret != simple_control) | |
2362 | break; | |
2363 | } | |
2364 | } | |
2365 | ||
2366 | dont_repeat (); | |
2367 | ||
2368 | return ret; | |
2369 | } | |
2370 | ||
2371 | /* Read lines from the input stream and accumulate them in a chain of | |
2372 | struct command_line's, which is then returned. For input from a | |
2373 | terminal, the special command "end" is used to mark the end of the | |
2374 | input, and is not included in the returned chain of commands. */ | |
2375 | ||
2376 | #define END_MESSAGE "End with a line saying just \"end\"." | |
2377 | ||
2378 | struct command_line * | |
fba45db2 | 2379 | read_command_lines (char *prompt_arg, int from_tty) |
9e0b60a8 JM |
2380 | { |
2381 | struct command_line *head, *tail, *next; | |
2382 | struct cleanup *old_chain; | |
2383 | enum command_control_type ret; | |
2384 | enum misc_command_type val; | |
2385 | ||
c5aa993b | 2386 | control_level = 0; |
9e0b60a8 JM |
2387 | if (readline_begin_hook) |
2388 | { | |
2389 | /* Note - intentional to merge messages with no newline */ | |
2390 | (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE); | |
2391 | } | |
2392 | else if (from_tty && input_from_terminal_p ()) | |
2393 | { | |
2394 | printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE); | |
2395 | gdb_flush (gdb_stdout); | |
2396 | } | |
2397 | ||
2398 | head = tail = NULL; | |
2399 | old_chain = NULL; | |
2400 | ||
2401 | while (1) | |
2402 | { | |
2403 | val = read_next_line (&next); | |
2404 | ||
2405 | /* Ignore blank lines or comments. */ | |
2406 | if (val == nop_command) | |
2407 | continue; | |
2408 | ||
2409 | if (val == end_command) | |
2410 | { | |
2411 | ret = simple_control; | |
2412 | break; | |
2413 | } | |
2414 | ||
2415 | if (val != ok_command) | |
2416 | { | |
2417 | ret = invalid_control; | |
2418 | break; | |
2419 | } | |
2420 | ||
2421 | if (next->control_type == while_control | |
2422 | || next->control_type == if_control) | |
2423 | { | |
2424 | control_level++; | |
2425 | ret = recurse_read_control_structure (next); | |
2426 | control_level--; | |
2427 | ||
2428 | if (ret == invalid_control) | |
2429 | break; | |
2430 | } | |
c5aa993b | 2431 | |
9e0b60a8 JM |
2432 | if (tail) |
2433 | { | |
2434 | tail->next = next; | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | head = next; | |
e41a3b1a | 2439 | old_chain = make_cleanup_free_command_lines (&head); |
9e0b60a8 JM |
2440 | } |
2441 | tail = next; | |
2442 | } | |
2443 | ||
2444 | dont_repeat (); | |
2445 | ||
2446 | if (head) | |
2447 | { | |
2448 | if (ret != invalid_control) | |
2449 | { | |
2450 | discard_cleanups (old_chain); | |
2451 | } | |
2452 | else | |
2453 | do_cleanups (old_chain); | |
2454 | } | |
2455 | ||
2456 | if (readline_end_hook) | |
2457 | { | |
2458 | (*readline_end_hook) (); | |
2459 | } | |
2460 | return (head); | |
2461 | } | |
2462 | ||
2463 | /* Free a chain of struct command_line's. */ | |
2464 | ||
2465 | void | |
fba45db2 | 2466 | free_command_lines (struct command_line **lptr) |
9e0b60a8 JM |
2467 | { |
2468 | register struct command_line *l = *lptr; | |
2469 | register struct command_line *next; | |
2470 | struct command_line **blist; | |
2471 | int i; | |
2472 | ||
2473 | while (l) | |
2474 | { | |
2475 | if (l->body_count > 0) | |
2476 | { | |
2477 | blist = l->body_list; | |
2478 | for (i = 0; i < l->body_count; i++, blist++) | |
2479 | free_command_lines (blist); | |
2480 | } | |
2481 | next = l->next; | |
2482 | free (l->line); | |
c5aa993b | 2483 | free ((PTR) l); |
9e0b60a8 JM |
2484 | l = next; |
2485 | } | |
2486 | } | |
e41a3b1a AC |
2487 | |
2488 | static void | |
2489 | do_free_command_lines_cleanup (void *arg) | |
2490 | { | |
2491 | free_command_lines (arg); | |
2492 | } | |
2493 | ||
2494 | static struct cleanup * | |
2495 | make_cleanup_free_command_lines (struct command_line **arg) | |
2496 | { | |
2497 | return make_cleanup (do_free_command_lines_cleanup, arg); | |
2498 | } | |
9e0b60a8 JM |
2499 | \f |
2500 | /* Add an element to the list of info subcommands. */ | |
2501 | ||
56382845 | 2502 | struct cmd_list_element * |
10689f25 | 2503 | add_info (char *name, void (*fun) (char *, int), char *doc) |
9e0b60a8 | 2504 | { |
56382845 | 2505 | return add_cmd (name, no_class, fun, doc, &infolist); |
9e0b60a8 JM |
2506 | } |
2507 | ||
2508 | /* Add an alias to the list of info subcommands. */ | |
2509 | ||
56382845 | 2510 | struct cmd_list_element * |
fba45db2 | 2511 | add_info_alias (char *name, char *oldname, int abbrev_flag) |
9e0b60a8 | 2512 | { |
56382845 | 2513 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); |
9e0b60a8 JM |
2514 | } |
2515 | ||
2516 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2517 | Therefore, its own definition is called only for "info" with no args. */ | |
2518 | ||
2519 | /* ARGSUSED */ | |
2520 | static void | |
fba45db2 | 2521 | info_command (char *arg, int from_tty) |
9e0b60a8 JM |
2522 | { |
2523 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); | |
2524 | help_list (infolist, "info ", -1, gdb_stdout); | |
2525 | } | |
2526 | ||
2527 | /* The "complete" command is used by Emacs to implement completion. */ | |
2528 | ||
2529 | /* ARGSUSED */ | |
2530 | static void | |
fba45db2 | 2531 | complete_command (char *arg, int from_tty) |
9e0b60a8 JM |
2532 | { |
2533 | int i; | |
2534 | int argpoint; | |
2535 | char *completion; | |
2536 | ||
2537 | dont_repeat (); | |
2538 | ||
2539 | if (arg == NULL) | |
2540 | arg = ""; | |
2541 | argpoint = strlen (arg); | |
2542 | ||
2543 | for (completion = line_completion_function (arg, i = 0, arg, argpoint); | |
2544 | completion; | |
2545 | completion = line_completion_function (arg, ++i, arg, argpoint)) | |
2546 | { | |
2547 | printf_unfiltered ("%s\n", completion); | |
2548 | free (completion); | |
2549 | } | |
2550 | } | |
2551 | ||
2552 | /* The "show" command with no arguments shows all the settings. */ | |
2553 | ||
2554 | /* ARGSUSED */ | |
2555 | static void | |
fba45db2 | 2556 | show_command (char *arg, int from_tty) |
9e0b60a8 JM |
2557 | { |
2558 | cmd_show_list (showlist, from_tty, ""); | |
2559 | } | |
2560 | \f | |
2561 | /* Add an element to the list of commands. */ | |
2562 | ||
56382845 | 2563 | struct cmd_list_element * |
10689f25 KB |
2564 | add_com (char *name, enum command_class class, void (*fun) (char *, int), |
2565 | char *doc) | |
9e0b60a8 | 2566 | { |
56382845 | 2567 | return add_cmd (name, class, fun, doc, &cmdlist); |
9e0b60a8 JM |
2568 | } |
2569 | ||
2570 | /* Add an alias or abbreviation command to the list of commands. */ | |
2571 | ||
56382845 | 2572 | struct cmd_list_element * |
fba45db2 KB |
2573 | add_com_alias (char *name, char *oldname, enum command_class class, |
2574 | int abbrev_flag) | |
9e0b60a8 | 2575 | { |
56382845 | 2576 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); |
9e0b60a8 JM |
2577 | } |
2578 | ||
2579 | void | |
fba45db2 | 2580 | error_no_arg (char *why) |
9e0b60a8 JM |
2581 | { |
2582 | error ("Argument required (%s).", why); | |
2583 | } | |
2584 | ||
10689f25 KB |
2585 | /* Provide documentation on command or list given by COMMAND. FROM_TTY |
2586 | is ignored. */ | |
2587 | ||
9e0b60a8 JM |
2588 | /* ARGSUSED */ |
2589 | static void | |
10689f25 | 2590 | help_command (char *command, int from_tty) |
9e0b60a8 JM |
2591 | { |
2592 | help_cmd (command, gdb_stdout); | |
2593 | } | |
2594 | \f | |
2595 | static void | |
fba45db2 | 2596 | validate_comname (char *comname) |
9e0b60a8 JM |
2597 | { |
2598 | register char *p; | |
2599 | ||
2600 | if (comname == 0) | |
2601 | error_no_arg ("name of command to define"); | |
2602 | ||
2603 | p = comname; | |
2604 | while (*p) | |
2605 | { | |
c5aa993b | 2606 | if (!isalnum (*p) && *p != '-' && *p != '_') |
9e0b60a8 JM |
2607 | error ("Junk in argument list: \"%s\"", p); |
2608 | p++; | |
2609 | } | |
2610 | } | |
2611 | ||
2612 | /* This is just a placeholder in the command data structures. */ | |
2613 | static void | |
fba45db2 | 2614 | user_defined_command (char *ignore, int from_tty) |
9e0b60a8 JM |
2615 | { |
2616 | } | |
2617 | ||
2618 | static void | |
fba45db2 | 2619 | define_command (char *comname, int from_tty) |
9e0b60a8 | 2620 | { |
73bc900d FN |
2621 | #define MAX_TMPBUF 128 |
2622 | enum cmd_hook_type | |
2623 | { | |
2624 | CMD_NO_HOOK = 0, | |
2625 | CMD_PRE_HOOK, | |
2626 | CMD_POST_HOOK | |
2627 | }; | |
9e0b60a8 | 2628 | register struct command_line *cmds; |
73bc900d | 2629 | register struct cmd_list_element *c, *newc, *oldc, *hookc = 0; |
9e0b60a8 | 2630 | char *tem = comname; |
73bc900d FN |
2631 | char *tem2; |
2632 | char tmpbuf[MAX_TMPBUF]; | |
2633 | int hook_type = CMD_NO_HOOK; | |
2634 | int hook_name_size = 0; | |
2635 | ||
9e0b60a8 JM |
2636 | #define HOOK_STRING "hook-" |
2637 | #define HOOK_LEN 5 | |
73bc900d FN |
2638 | #define HOOK_POST_STRING "hookpost-" |
2639 | #define HOOK_POST_LEN 9 | |
9e0b60a8 JM |
2640 | |
2641 | validate_comname (comname); | |
2642 | ||
2643 | /* Look it up, and verify that we got an exact match. */ | |
2644 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); | |
2645 | if (c && !STREQ (comname, c->name)) | |
2646 | c = 0; | |
2647 | ||
2648 | if (c) | |
2649 | { | |
2650 | if (c->class == class_user || c->class == class_alias) | |
2651 | tem = "Redefine command \"%s\"? "; | |
2652 | else | |
2653 | tem = "Really redefine built-in command \"%s\"? "; | |
2654 | if (!query (tem, c->name)) | |
2655 | error ("Command \"%s\" not redefined.", c->name); | |
2656 | } | |
2657 | ||
2658 | /* If this new command is a hook, then mark the command which it | |
2659 | is hooking. Note that we allow hooking `help' commands, so that | |
2660 | we can hook the `stop' pseudo-command. */ | |
2661 | ||
2662 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
73bc900d FN |
2663 | { |
2664 | hook_type = CMD_PRE_HOOK; | |
2665 | hook_name_size = HOOK_LEN; | |
2666 | } | |
2667 | else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN)) | |
2668 | { | |
2669 | hook_type = CMD_POST_HOOK; | |
2670 | hook_name_size = HOOK_POST_LEN; | |
2671 | } | |
2672 | ||
2673 | if (hook_type != CMD_NO_HOOK) | |
9e0b60a8 JM |
2674 | { |
2675 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
73bc900d | 2676 | tem = comname + hook_name_size; |
9e0b60a8 | 2677 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); |
73bc900d | 2678 | if (hookc && !STREQ (comname + hook_name_size, hookc->name)) |
9e0b60a8 JM |
2679 | hookc = 0; |
2680 | if (!hookc) | |
2681 | { | |
2682 | warning ("Your new `%s' command does not hook any existing command.", | |
2683 | comname); | |
2684 | if (!query ("Proceed? ")) | |
2685 | error ("Not confirmed."); | |
2686 | } | |
2687 | } | |
2688 | ||
2689 | comname = savestring (comname, strlen (comname)); | |
2690 | ||
2691 | /* If the rest of the commands will be case insensitive, this one | |
2692 | should behave in the same manner. */ | |
2693 | for (tem = comname; *tem; tem++) | |
c5aa993b JM |
2694 | if (isupper (*tem)) |
2695 | *tem = tolower (*tem); | |
9e0b60a8 JM |
2696 | |
2697 | sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname); | |
2698 | cmds = read_command_lines (tmpbuf, from_tty); | |
2699 | ||
2700 | if (c && c->class == class_user) | |
2701 | free_command_lines (&c->user_commands); | |
2702 | ||
2703 | newc = add_cmd (comname, class_user, user_defined_command, | |
c5aa993b JM |
2704 | (c && c->class == class_user) |
2705 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
9e0b60a8 JM |
2706 | newc->user_commands = cmds; |
2707 | ||
2708 | /* If this new command is a hook, then mark both commands as being | |
2709 | tied. */ | |
2710 | if (hookc) | |
2711 | { | |
73bc900d FN |
2712 | switch (hook_type) |
2713 | { | |
2714 | case CMD_PRE_HOOK: | |
2715 | hookc->hook_pre = newc; /* Target gets hooked. */ | |
2716 | newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */ | |
2717 | break; | |
2718 | case CMD_POST_HOOK: | |
2719 | hookc->hook_pre = newc; /* Target gets hooked. */ | |
2720 | newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */ | |
2721 | break; | |
2722 | default: | |
2723 | /* Should never come here as hookc would be 0. */ | |
2724 | } | |
9e0b60a8 JM |
2725 | } |
2726 | } | |
2727 | ||
2728 | static void | |
fba45db2 | 2729 | document_command (char *comname, int from_tty) |
9e0b60a8 JM |
2730 | { |
2731 | struct command_line *doclines; | |
2732 | register struct cmd_list_element *c; | |
2733 | char *tem = comname; | |
2734 | char tmpbuf[128]; | |
2735 | ||
2736 | validate_comname (comname); | |
2737 | ||
2738 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2739 | ||
2740 | if (c->class != class_user) | |
2741 | error ("Command \"%s\" is built-in.", comname); | |
2742 | ||
2743 | sprintf (tmpbuf, "Type documentation for \"%s\".", comname); | |
2744 | doclines = read_command_lines (tmpbuf, from_tty); | |
2745 | ||
c5aa993b JM |
2746 | if (c->doc) |
2747 | free (c->doc); | |
9e0b60a8 JM |
2748 | |
2749 | { | |
2750 | register struct command_line *cl1; | |
2751 | register int len = 0; | |
2752 | ||
2753 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2754 | len += strlen (cl1->line) + 1; | |
2755 | ||
2756 | c->doc = (char *) xmalloc (len + 1); | |
2757 | *c->doc = 0; | |
2758 | ||
2759 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2760 | { | |
2761 | strcat (c->doc, cl1->line); | |
2762 | if (cl1->next) | |
2763 | strcat (c->doc, "\n"); | |
2764 | } | |
2765 | } | |
2766 | ||
2767 | free_command_lines (&doclines); | |
2768 | } | |
2769 | \f | |
2770 | /* Print the GDB banner. */ | |
2771 | void | |
fba45db2 | 2772 | print_gdb_version (struct ui_file *stream) |
9e0b60a8 JM |
2773 | { |
2774 | /* From GNU coding standards, first line is meant to be easy for a | |
2775 | program to parse, and is just canonical program name and version | |
2776 | number, which starts after last space. */ | |
2777 | ||
8b93c638 JM |
2778 | #ifdef UI_OUT |
2779 | /* Print it console style until a format is defined */ | |
2780 | fprintf_filtered (stream, "GNU gdb %s (UI_OUT)\n", version); | |
2781 | #else | |
9e0b60a8 | 2782 | fprintf_filtered (stream, "GNU gdb %s\n", version); |
8b93c638 | 2783 | #endif |
9e0b60a8 JM |
2784 | |
2785 | /* Second line is a copyright notice. */ | |
2786 | ||
107b56f0 | 2787 | fprintf_filtered (stream, "Copyright 2000 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
2788 | |
2789 | /* Following the copyright is a brief statement that the program is | |
2790 | free software, that users are free to copy and change it on | |
2791 | certain conditions, that it is covered by the GNU GPL, and that | |
2792 | there is no warranty. */ | |
2793 | ||
2794 | fprintf_filtered (stream, "\ | |
2795 | GDB is free software, covered by the GNU General Public License, and you are\n\ | |
2796 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
2797 | Type \"show copying\" to see the conditions.\n\ | |
2798 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
2799 | ||
2800 | /* After the required info we print the configuration information. */ | |
2801 | ||
2802 | fprintf_filtered (stream, "This GDB was configured as \""); | |
2803 | if (!STREQ (host_name, target_name)) | |
2804 | { | |
2805 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
2806 | } | |
2807 | else | |
2808 | { | |
2809 | fprintf_filtered (stream, "%s", host_name); | |
2810 | } | |
2811 | fprintf_filtered (stream, "\"."); | |
2812 | } | |
2813 | ||
2814 | /* ARGSUSED */ | |
2815 | static void | |
fba45db2 | 2816 | show_version (char *args, int from_tty) |
9e0b60a8 JM |
2817 | { |
2818 | immediate_quit++; | |
2819 | print_gdb_version (gdb_stdout); | |
2820 | printf_filtered ("\n"); | |
2821 | immediate_quit--; | |
2822 | } | |
2823 | \f | |
2824 | /* get_prompt: access method for the GDB prompt string. */ | |
2825 | ||
2826 | #define MAX_PROMPT_SIZE 256 | |
2827 | ||
2828 | /* | |
2829 | * int get_prompt_1 (char * buf); | |
2830 | * | |
2831 | * Work-horse for get_prompt (called via catch_errors). | |
2832 | * Argument is buffer to hold the formatted prompt. | |
2833 | * | |
2834 | * Returns: 1 for success (use formatted prompt) | |
2835 | * 0 for failure (use gdb_prompt_string). | |
c5aa993b | 2836 | */ |
9e0b60a8 JM |
2837 | |
2838 | static int gdb_prompt_escape; | |
2839 | ||
2840 | static int | |
710b33bd | 2841 | get_prompt_1 (void *data) |
9e0b60a8 | 2842 | { |
710b33bd | 2843 | char *formatted_prompt = data; |
9e0b60a8 JM |
2844 | char *local_prompt; |
2845 | ||
6426a772 | 2846 | if (event_loop_p) |
9e0b60a8 JM |
2847 | local_prompt = PROMPT (0); |
2848 | else | |
2849 | local_prompt = gdb_prompt_string; | |
2850 | ||
2851 | ||
2852 | if (gdb_prompt_escape == 0) | |
2853 | { | |
c5aa993b | 2854 | return 0; /* do no formatting */ |
9e0b60a8 | 2855 | } |
c5aa993b JM |
2856 | else |
2857 | /* formatted prompt */ | |
9e0b60a8 | 2858 | { |
c5aa993b | 2859 | char fmt[40], *promptp, *outp, *tmp; |
9e0b60a8 | 2860 | value_ptr arg_val; |
c5aa993b JM |
2861 | DOUBLEST doubleval; |
2862 | LONGEST longval; | |
9e0b60a8 JM |
2863 | CORE_ADDR addrval; |
2864 | ||
2865 | int i, len; | |
2866 | struct type *arg_type, *elt_type; | |
2867 | ||
2868 | promptp = local_prompt; | |
c5aa993b | 2869 | outp = formatted_prompt; |
9e0b60a8 JM |
2870 | |
2871 | while (*promptp != '\0') | |
2872 | { | |
2873 | int available = MAX_PROMPT_SIZE - (outp - formatted_prompt) - 1; | |
2874 | ||
2875 | if (*promptp != gdb_prompt_escape) | |
2876 | { | |
c5aa993b | 2877 | if (available >= 1) /* overflow protect */ |
9e0b60a8 JM |
2878 | *outp++ = *promptp++; |
2879 | } | |
2880 | else | |
2881 | { | |
2882 | /* GDB prompt string contains escape char. Parse for arg. | |
c5aa993b JM |
2883 | Two consecutive escape chars followed by arg followed by |
2884 | a comma means to insert the arg using a default format. | |
2885 | Otherwise a printf format string may be included between | |
2886 | the two escape chars. eg: | |
2887 | %%foo, insert foo using default format | |
2888 | %2.2f%foo, insert foo using "%2.2f" format | |
2889 | A mismatch between the format string and the data type | |
2890 | of "foo" is an error (which we don't know how to protect | |
2891 | against). */ | |
9e0b60a8 JM |
2892 | |
2893 | fmt[0] = '\0'; /* assume null format string */ | |
2894 | if (promptp[1] == gdb_prompt_escape) /* double esc char */ | |
2895 | { | |
2896 | promptp += 2; /* skip past two escape chars. */ | |
2897 | } | |
2898 | else | |
2899 | { | |
2900 | /* extract format string from between two esc chars */ | |
2901 | i = 0; | |
c5aa993b JM |
2902 | do |
2903 | { | |
2904 | fmt[i++] = *promptp++; /* copy format string */ | |
2905 | } | |
2906 | while (i < sizeof (fmt) - 1 && | |
2907 | *promptp != gdb_prompt_escape && | |
2908 | *promptp != '\0'); | |
9e0b60a8 JM |
2909 | |
2910 | if (*promptp != gdb_prompt_escape) | |
2911 | error ("Syntax error at prompt position %d", | |
2912 | promptp - local_prompt); | |
2913 | else | |
2914 | { | |
2915 | promptp++; /* skip second escape char */ | |
2916 | fmt[i++] = '\0'; /* terminate the format string */ | |
2917 | } | |
2918 | } | |
2919 | ||
2920 | arg_val = parse_to_comma_and_eval (&promptp); | |
2921 | if (*promptp == ',') | |
c5aa993b | 2922 | promptp++; /* skip past the comma */ |
9e0b60a8 | 2923 | arg_type = check_typedef (VALUE_TYPE (arg_val)); |
c5aa993b | 2924 | switch (TYPE_CODE (arg_type)) |
9e0b60a8 JM |
2925 | { |
2926 | case TYPE_CODE_ARRAY: | |
2927 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
c5aa993b | 2928 | if (TYPE_LENGTH (arg_type) > 0 && |
9e0b60a8 JM |
2929 | TYPE_LENGTH (elt_type) == 1 && |
2930 | TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
2931 | { | |
2932 | int len = TYPE_LENGTH (arg_type); | |
2933 | ||
2934 | if (VALUE_LAZY (arg_val)) | |
2935 | value_fetch_lazy (arg_val); | |
2936 | tmp = VALUE_CONTENTS (arg_val); | |
2937 | ||
2938 | if (len > available) | |
c5aa993b | 2939 | len = available; /* overflow protect */ |
9e0b60a8 JM |
2940 | |
2941 | /* FIXME: how to protect GDB from crashing | |
c5aa993b | 2942 | from bad user-supplied format string? */ |
9e0b60a8 JM |
2943 | if (fmt[0] != 0) |
2944 | sprintf (outp, fmt, tmp); | |
2945 | else | |
2946 | strncpy (outp, tmp, len); | |
2947 | outp[len] = '\0'; | |
2948 | } | |
2949 | break; | |
2950 | case TYPE_CODE_PTR: | |
2951 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
2952 | addrval = value_as_pointer (arg_val); | |
2953 | ||
2954 | if (TYPE_LENGTH (elt_type) == 1 && | |
c5aa993b | 2955 | TYPE_CODE (elt_type) == TYPE_CODE_INT && |
9e0b60a8 JM |
2956 | addrval != 0) |
2957 | { | |
2958 | /* display it as a string */ | |
2959 | char *default_fmt = "%s"; | |
2960 | char *tmp; | |
2961 | int err = 0; | |
2962 | ||
2963 | /* Limiting the number of bytes that the following call | |
c5aa993b JM |
2964 | will read protects us from sprintf overflow later. */ |
2965 | i = target_read_string (addrval, /* src */ | |
2966 | &tmp, /* dest */ | |
2967 | available, /* len */ | |
9e0b60a8 JM |
2968 | &err); |
2969 | if (err) /* read failed */ | |
2970 | error ("%s on target_read", safe_strerror (err)); | |
2971 | ||
2972 | tmp[i] = '\0'; /* force-terminate string */ | |
2973 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
2974 | from bad user-supplied format string? */ |
2975 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, | |
9e0b60a8 JM |
2976 | tmp); |
2977 | free (tmp); | |
2978 | } | |
2979 | else | |
2980 | { | |
2981 | /* display it as a pointer */ | |
2982 | char *default_fmt = "0x%x"; | |
2983 | ||
2984 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
2985 | from bad user-supplied format string? */ |
2986 | if (available >= 16 /*? */ ) /* overflow protect */ | |
9e0b60a8 JM |
2987 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
2988 | (long) addrval); | |
2989 | } | |
2990 | break; | |
2991 | case TYPE_CODE_FLT: | |
2992 | { | |
2993 | char *default_fmt = "%g"; | |
2994 | ||
2995 | doubleval = value_as_double (arg_val); | |
2996 | /* FIXME: how to protect GDB from crashing | |
2997 | from bad user-supplied format string? */ | |
c5aa993b | 2998 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
2999 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3000 | (double) doubleval); | |
3001 | break; | |
3002 | } | |
3003 | case TYPE_CODE_INT: | |
3004 | { | |
3005 | char *default_fmt = "%d"; | |
3006 | ||
3007 | longval = value_as_long (arg_val); | |
3008 | /* FIXME: how to protect GDB from crashing | |
3009 | from bad user-supplied format string? */ | |
c5aa993b | 3010 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3011 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3012 | (long) longval); | |
3013 | break; | |
3014 | } | |
3015 | case TYPE_CODE_BOOL: | |
3016 | { | |
3017 | /* no default format for bool */ | |
3018 | longval = value_as_long (arg_val); | |
c5aa993b | 3019 | if (available >= 8 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3020 | { |
3021 | if (longval) | |
3022 | strcpy (outp, "<true>"); | |
3023 | else | |
3024 | strcpy (outp, "<false>"); | |
3025 | } | |
3026 | break; | |
3027 | } | |
3028 | case TYPE_CODE_ENUM: | |
3029 | { | |
3030 | /* no default format for enum */ | |
3031 | longval = value_as_long (arg_val); | |
3032 | len = TYPE_NFIELDS (arg_type); | |
3033 | /* find enum name if possible */ | |
3034 | for (i = 0; i < len; i++) | |
3035 | if (TYPE_FIELD_BITPOS (arg_type, i) == longval) | |
c5aa993b | 3036 | break; /* match -- end loop */ |
9e0b60a8 JM |
3037 | |
3038 | if (i < len) /* enum name found */ | |
3039 | { | |
3040 | char *name = TYPE_FIELD_NAME (arg_type, i); | |
3041 | ||
3042 | strncpy (outp, name, available); | |
3043 | /* in casel available < strlen (name), */ | |
3044 | outp[available] = '\0'; | |
3045 | } | |
3046 | else | |
3047 | { | |
c5aa993b | 3048 | if (available >= 16 /*? */ ) /* overflow protect */ |
d4f3574e | 3049 | sprintf (outp, "%ld", (long) longval); |
9e0b60a8 JM |
3050 | } |
3051 | break; | |
3052 | } | |
3053 | case TYPE_CODE_VOID: | |
3054 | *outp = '\0'; | |
3055 | break; /* void type -- no output */ | |
3056 | default: | |
3057 | error ("bad data type at prompt position %d", | |
3058 | promptp - local_prompt); | |
3059 | break; | |
3060 | } | |
3061 | outp += strlen (outp); | |
3062 | } | |
3063 | } | |
3064 | *outp++ = '\0'; /* terminate prompt string */ | |
3065 | return 1; | |
3066 | } | |
3067 | } | |
3068 | ||
3069 | char * | |
fba45db2 | 3070 | get_prompt (void) |
9e0b60a8 JM |
3071 | { |
3072 | static char buf[MAX_PROMPT_SIZE]; | |
3073 | ||
c5aa993b | 3074 | if (catch_errors (get_prompt_1, buf, "bad formatted prompt: ", |
9e0b60a8 JM |
3075 | RETURN_MASK_ALL)) |
3076 | { | |
c5aa993b | 3077 | return &buf[0]; /* successful formatted prompt */ |
9e0b60a8 JM |
3078 | } |
3079 | else | |
3080 | { | |
3081 | /* Prompt could not be formatted. */ | |
6426a772 | 3082 | if (event_loop_p) |
9e0b60a8 JM |
3083 | return PROMPT (0); |
3084 | else | |
3085 | return gdb_prompt_string; | |
3086 | } | |
3087 | } | |
3088 | ||
3089 | void | |
fba45db2 | 3090 | set_prompt (char *s) |
9e0b60a8 JM |
3091 | { |
3092 | /* ??rehrauer: I don't know why this fails, since it looks as though | |
3093 | assignments to prompt are wrapped in calls to savestring... | |
c5aa993b JM |
3094 | if (prompt != NULL) |
3095 | free (prompt); | |
3096 | */ | |
6426a772 | 3097 | if (event_loop_p) |
9e0b60a8 JM |
3098 | PROMPT (0) = savestring (s, strlen (s)); |
3099 | else | |
3100 | gdb_prompt_string = savestring (s, strlen (s)); | |
3101 | } | |
9e0b60a8 | 3102 | \f |
c5aa993b | 3103 | |
9e0b60a8 JM |
3104 | /* If necessary, make the user confirm that we should quit. Return |
3105 | non-zero if we should quit, zero if we shouldn't. */ | |
3106 | ||
3107 | int | |
fba45db2 | 3108 | quit_confirm (void) |
9e0b60a8 JM |
3109 | { |
3110 | if (inferior_pid != 0 && target_has_execution) | |
3111 | { | |
3112 | char *s; | |
3113 | ||
3114 | /* This is something of a hack. But there's no reliable way to | |
c5aa993b JM |
3115 | see if a GUI is running. The `use_windows' variable doesn't |
3116 | cut it. */ | |
9e0b60a8 JM |
3117 | if (init_ui_hook) |
3118 | s = "A debugging session is active.\nDo you still want to close the debugger?"; | |
3119 | else if (attach_flag) | |
3120 | s = "The program is running. Quit anyway (and detach it)? "; | |
3121 | else | |
3122 | s = "The program is running. Exit anyway? "; | |
3123 | ||
c5aa993b | 3124 | if (!query (s)) |
9e0b60a8 JM |
3125 | return 0; |
3126 | } | |
3127 | ||
3128 | return 1; | |
3129 | } | |
3130 | ||
3131 | /* Quit without asking for confirmation. */ | |
3132 | ||
3133 | void | |
fba45db2 | 3134 | quit_force (char *args, int from_tty) |
9e0b60a8 JM |
3135 | { |
3136 | int exit_code = 0; | |
3137 | ||
3138 | /* An optional expression may be used to cause gdb to terminate with the | |
3139 | value of that expression. */ | |
3140 | if (args) | |
3141 | { | |
3142 | value_ptr val = parse_and_eval (args); | |
3143 | ||
3144 | exit_code = (int) value_as_long (val); | |
3145 | } | |
3146 | ||
3147 | if (inferior_pid != 0 && target_has_execution) | |
3148 | { | |
3149 | if (attach_flag) | |
3150 | target_detach (args, from_tty); | |
3151 | else | |
3152 | target_kill (); | |
3153 | } | |
3154 | ||
3155 | /* UDI wants this, to kill the TIP. */ | |
3156 | target_close (1); | |
3157 | ||
3158 | /* Save the history information if it is appropriate to do so. */ | |
3159 | if (write_history_p && history_filename) | |
3160 | write_history (history_filename); | |
3161 | ||
c5aa993b | 3162 | do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
9e0b60a8 JM |
3163 | |
3164 | #if defined(TUI) | |
3165 | /* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */ | |
3166 | /* The above does not need to be inside a tuiDo(), since | |
3167 | * it is not manipulating the curses screen, but rather, | |
3168 | * it is tearing it down. | |
3169 | */ | |
3170 | if (tui_version) | |
c5aa993b | 3171 | tuiCleanUp (); |
9e0b60a8 JM |
3172 | #endif |
3173 | ||
3174 | exit (exit_code); | |
3175 | } | |
3176 | ||
3177 | /* Handle the quit command. */ | |
3178 | ||
3179 | void | |
fba45db2 | 3180 | quit_command (char *args, int from_tty) |
9e0b60a8 | 3181 | { |
c5aa993b | 3182 | if (!quit_confirm ()) |
9e0b60a8 JM |
3183 | error ("Not confirmed."); |
3184 | quit_force (args, from_tty); | |
3185 | } | |
3186 | ||
3187 | /* Returns whether GDB is running on a terminal and whether the user | |
3188 | desires that questions be asked of them on that terminal. */ | |
3189 | ||
3190 | int | |
fba45db2 | 3191 | input_from_terminal_p (void) |
9e0b60a8 JM |
3192 | { |
3193 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
3194 | } | |
3195 | \f | |
3196 | /* ARGSUSED */ | |
3197 | static void | |
fba45db2 | 3198 | pwd_command (char *args, int from_tty) |
9e0b60a8 | 3199 | { |
c5aa993b JM |
3200 | if (args) |
3201 | error ("The \"pwd\" command does not take an argument: %s", args); | |
9e0b60a8 JM |
3202 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
3203 | ||
3204 | if (!STREQ (gdb_dirbuf, current_directory)) | |
3205 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", | |
c5aa993b | 3206 | current_directory, gdb_dirbuf); |
9e0b60a8 JM |
3207 | else |
3208 | printf_unfiltered ("Working directory %s.\n", current_directory); | |
3209 | } | |
3210 | ||
3211 | void | |
fba45db2 | 3212 | cd_command (char *dir, int from_tty) |
9e0b60a8 JM |
3213 | { |
3214 | int len; | |
3215 | /* Found something other than leading repetitions of "/..". */ | |
3216 | int found_real_path; | |
3217 | char *p; | |
3218 | ||
3219 | /* If the new directory is absolute, repeat is a no-op; if relative, | |
3220 | repeat might be useful but is more likely to be a mistake. */ | |
3221 | dont_repeat (); | |
3222 | ||
3223 | if (dir == 0) | |
3224 | error_no_arg ("new working directory"); | |
3225 | ||
3226 | dir = tilde_expand (dir); | |
3227 | make_cleanup (free, dir); | |
3228 | ||
3229 | if (chdir (dir) < 0) | |
3230 | perror_with_name (dir); | |
3231 | ||
a0b3c4fd JM |
3232 | #if defined(_WIN32) || defined(__MSDOS__) |
3233 | /* There's too much mess with DOSish names like "d:", "d:.", | |
3234 | "d:./foo" etc. Instead of having lots of special #ifdef'ed code, | |
3235 | simply get the canonicalized name of the current directory. */ | |
3236 | dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
3237 | #endif | |
3238 | ||
9e0b60a8 | 3239 | len = strlen (dir); |
eb2f494a | 3240 | if (SLASH_P (dir[len - 1])) |
a0b3c4fd JM |
3241 | { |
3242 | /* Remove the trailing slash unless this is a root directory | |
eb2f494a AC |
3243 | (including a drive letter on non-Unix systems). */ |
3244 | if (!(len == 1) /* "/" */ | |
a0b3c4fd | 3245 | #if defined(_WIN32) || defined(__MSDOS__) |
eb2f494a | 3246 | && !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */ |
a0b3c4fd JM |
3247 | #endif |
3248 | ) | |
3249 | len--; | |
3250 | } | |
3251 | ||
3252 | dir = savestring (dir, len); | |
c5aa993b | 3253 | if (ROOTED_P (dir)) |
9e0b60a8 JM |
3254 | current_directory = dir; |
3255 | else | |
3256 | { | |
a0b3c4fd | 3257 | if (SLASH_P (current_directory[strlen (current_directory) - 1])) |
9e0b60a8 JM |
3258 | current_directory = concat (current_directory, dir, NULL); |
3259 | else | |
3260 | current_directory = concat (current_directory, SLASH_STRING, dir, NULL); | |
3261 | free (dir); | |
3262 | } | |
3263 | ||
3264 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
3265 | ||
3266 | found_real_path = 0; | |
3267 | for (p = current_directory; *p;) | |
3268 | { | |
3269 | if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2]))) | |
3270 | strcpy (p, p + 2); | |
3271 | else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.' | |
3272 | && (p[3] == 0 || SLASH_P (p[3]))) | |
3273 | { | |
3274 | if (found_real_path) | |
3275 | { | |
3276 | /* Search backwards for the directory just before the "/.." | |
c5aa993b | 3277 | and obliterate it and the "/..". */ |
9e0b60a8 | 3278 | char *q = p; |
c5aa993b | 3279 | while (q != current_directory && !SLASH_P (q[-1])) |
9e0b60a8 JM |
3280 | --q; |
3281 | ||
3282 | if (q == current_directory) | |
3283 | /* current_directory is | |
3284 | a relative pathname ("can't happen"--leave it alone). */ | |
3285 | ++p; | |
3286 | else | |
3287 | { | |
3288 | strcpy (q - 1, p + 3); | |
3289 | p = q - 1; | |
3290 | } | |
3291 | } | |
3292 | else | |
3293 | /* We are dealing with leading repetitions of "/..", for example | |
3294 | "/../..", which is the Mach super-root. */ | |
3295 | p += 3; | |
3296 | } | |
3297 | else | |
3298 | { | |
3299 | found_real_path = 1; | |
3300 | ++p; | |
3301 | } | |
3302 | } | |
3303 | ||
3304 | forget_cached_source_info (); | |
3305 | ||
3306 | if (from_tty) | |
3307 | pwd_command ((char *) 0, 1); | |
3308 | } | |
3309 | \f | |
c5aa993b JM |
3310 | struct source_cleanup_lines_args |
3311 | { | |
9e0b60a8 JM |
3312 | int old_line; |
3313 | char *old_file; | |
3314 | char *old_pre_error; | |
3315 | char *old_error_pre_print; | |
3316 | }; | |
3317 | ||
3318 | static void | |
fba45db2 | 3319 | source_cleanup_lines (PTR args) |
9e0b60a8 JM |
3320 | { |
3321 | struct source_cleanup_lines_args *p = | |
c5aa993b | 3322 | (struct source_cleanup_lines_args *) args; |
9e0b60a8 JM |
3323 | source_line_number = p->old_line; |
3324 | source_file_name = p->old_file; | |
3325 | source_pre_error = p->old_pre_error; | |
3326 | error_pre_print = p->old_error_pre_print; | |
3327 | } | |
3328 | ||
3329 | /* ARGSUSED */ | |
e41a3b1a AC |
3330 | static void |
3331 | do_fclose_cleanup (void *stream) | |
3332 | { | |
3333 | fclose (stream); | |
3334 | } | |
3335 | ||
9e0b60a8 | 3336 | void |
fba45db2 | 3337 | source_command (char *args, int from_tty) |
9e0b60a8 JM |
3338 | { |
3339 | FILE *stream; | |
3340 | struct cleanup *old_cleanups; | |
3341 | char *file = args; | |
3342 | struct source_cleanup_lines_args old_lines; | |
3343 | int needed_length; | |
3344 | ||
3345 | if (file == NULL) | |
3346 | { | |
3347 | error ("source command requires pathname of file to source."); | |
3348 | } | |
3349 | ||
3350 | file = tilde_expand (file); | |
3351 | old_cleanups = make_cleanup (free, file); | |
3352 | ||
3353 | stream = fopen (file, FOPEN_RT); | |
3354 | if (!stream) | |
3355 | { | |
3356 | if (from_tty) | |
3357 | perror_with_name (file); | |
3358 | else | |
3359 | return; | |
3360 | } | |
3361 | ||
e41a3b1a | 3362 | make_cleanup (do_fclose_cleanup, stream); |
9e0b60a8 JM |
3363 | |
3364 | old_lines.old_line = source_line_number; | |
3365 | old_lines.old_file = source_file_name; | |
3366 | old_lines.old_pre_error = source_pre_error; | |
3367 | old_lines.old_error_pre_print = error_pre_print; | |
3368 | make_cleanup (source_cleanup_lines, &old_lines); | |
3369 | source_line_number = 0; | |
3370 | source_file_name = file; | |
3371 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
3372 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
3373 | make_cleanup (free, source_pre_error); | |
3374 | /* This will get set every time we read a line. So it won't stay "" for | |
3375 | long. */ | |
3376 | error_pre_print = ""; | |
3377 | ||
3378 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
3379 | if (source_error_allocated < needed_length) | |
3380 | { | |
3381 | source_error_allocated *= 2; | |
3382 | if (source_error_allocated < needed_length) | |
3383 | source_error_allocated = needed_length; | |
3384 | if (source_error == NULL) | |
3385 | source_error = xmalloc (source_error_allocated); | |
3386 | else | |
3387 | source_error = xrealloc (source_error, source_error_allocated); | |
3388 | } | |
3389 | ||
3390 | read_command_file (stream); | |
3391 | ||
3392 | do_cleanups (old_cleanups); | |
3393 | } | |
3394 | ||
3395 | /* ARGSUSED */ | |
3396 | static void | |
fba45db2 | 3397 | echo_command (char *text, int from_tty) |
9e0b60a8 JM |
3398 | { |
3399 | char *p = text; | |
3400 | register int c; | |
3401 | ||
3402 | if (text) | |
3403 | while ((c = *p++) != '\0') | |
3404 | { | |
3405 | if (c == '\\') | |
3406 | { | |
3407 | /* \ at end of argument is used after spaces | |
3408 | so they won't be lost. */ | |
3409 | if (*p == 0) | |
3410 | return; | |
3411 | ||
3412 | c = parse_escape (&p); | |
3413 | if (c >= 0) | |
3414 | printf_filtered ("%c", c); | |
3415 | } | |
3416 | else | |
3417 | printf_filtered ("%c", c); | |
3418 | } | |
3419 | ||
3420 | /* Force this output to appear now. */ | |
3421 | wrap_here (""); | |
3422 | gdb_flush (gdb_stdout); | |
3423 | } | |
3424 | ||
3425 | /* ARGSUSED */ | |
3426 | static void | |
fba45db2 | 3427 | dont_repeat_command (char *ignored, int from_tty) |
9e0b60a8 | 3428 | { |
c5aa993b JM |
3429 | *line = 0; /* Can't call dont_repeat here because we're not |
3430 | necessarily reading from stdin. */ | |
9e0b60a8 JM |
3431 | } |
3432 | \f | |
3433 | /* Functions to manipulate command line editing control variables. */ | |
3434 | ||
3435 | /* Number of commands to print in each call to show_commands. */ | |
3436 | #define Hist_print 10 | |
3437 | static void | |
fba45db2 | 3438 | show_commands (char *args, int from_tty) |
9e0b60a8 JM |
3439 | { |
3440 | /* Index for history commands. Relative to history_base. */ | |
3441 | int offset; | |
3442 | ||
3443 | /* Number of the history entry which we are planning to display next. | |
3444 | Relative to history_base. */ | |
3445 | static int num = 0; | |
3446 | ||
3447 | /* The first command in the history which doesn't exist (i.e. one more | |
3448 | than the number of the last command). Relative to history_base. */ | |
3449 | int hist_len; | |
3450 | ||
a14ed312 | 3451 | extern HIST_ENTRY *history_get (int); |
9e0b60a8 JM |
3452 | |
3453 | /* Print out some of the commands from the command history. */ | |
3454 | /* First determine the length of the history list. */ | |
3455 | hist_len = history_size; | |
3456 | for (offset = 0; offset < history_size; offset++) | |
3457 | { | |
3458 | if (!history_get (history_base + offset)) | |
3459 | { | |
3460 | hist_len = offset; | |
3461 | break; | |
3462 | } | |
3463 | } | |
3464 | ||
3465 | if (args) | |
3466 | { | |
3467 | if (args[0] == '+' && args[1] == '\0') | |
3468 | /* "info editing +" should print from the stored position. */ | |
3469 | ; | |
3470 | else | |
3471 | /* "info editing <exp>" should print around command number <exp>. */ | |
0e828ed1 | 3472 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; |
9e0b60a8 JM |
3473 | } |
3474 | /* "show commands" means print the last Hist_print commands. */ | |
3475 | else | |
3476 | { | |
3477 | num = hist_len - Hist_print; | |
3478 | } | |
3479 | ||
3480 | if (num < 0) | |
3481 | num = 0; | |
3482 | ||
3483 | /* If there are at least Hist_print commands, we want to display the last | |
3484 | Hist_print rather than, say, the last 6. */ | |
3485 | if (hist_len - num < Hist_print) | |
3486 | { | |
3487 | num = hist_len - Hist_print; | |
3488 | if (num < 0) | |
3489 | num = 0; | |
3490 | } | |
3491 | ||
3492 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
3493 | { | |
3494 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 3495 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
3496 | } |
3497 | ||
3498 | /* The next command we want to display is the next one that we haven't | |
3499 | displayed yet. */ | |
3500 | num += Hist_print; | |
3501 | ||
3502 | /* If the user repeats this command with return, it should do what | |
3503 | "show commands +" does. This is unnecessary if arg is null, | |
3504 | because "show commands +" is not useful after "show commands". */ | |
3505 | if (from_tty && args) | |
3506 | { | |
3507 | args[0] = '+'; | |
3508 | args[1] = '\0'; | |
3509 | } | |
3510 | } | |
3511 | ||
3512 | /* Called by do_setshow_command. */ | |
3513 | /* ARGSUSED */ | |
3514 | static void | |
fba45db2 | 3515 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
3516 | { |
3517 | if (history_size == INT_MAX) | |
3518 | unstifle_history (); | |
3519 | else if (history_size >= 0) | |
3520 | stifle_history (history_size); | |
3521 | else | |
3522 | { | |
3523 | history_size = INT_MAX; | |
3524 | error ("History size must be non-negative"); | |
3525 | } | |
3526 | } | |
3527 | ||
3528 | /* ARGSUSED */ | |
3529 | static void | |
fba45db2 | 3530 | set_history (char *args, int from_tty) |
9e0b60a8 JM |
3531 | { |
3532 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
3533 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
3534 | } | |
3535 | ||
3536 | /* ARGSUSED */ | |
3537 | static void | |
fba45db2 | 3538 | show_history (char *args, int from_tty) |
9e0b60a8 JM |
3539 | { |
3540 | cmd_show_list (showhistlist, from_tty, ""); | |
3541 | } | |
3542 | ||
3543 | int info_verbose = 0; /* Default verbose msgs off */ | |
3544 | ||
3545 | /* Called by do_setshow_command. An elaborate joke. */ | |
3546 | /* ARGSUSED */ | |
3547 | static void | |
fba45db2 | 3548 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) |
9e0b60a8 JM |
3549 | { |
3550 | char *cmdname = "verbose"; | |
3551 | struct cmd_list_element *showcmd; | |
3552 | ||
3553 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
3554 | ||
3555 | if (info_verbose) | |
3556 | { | |
3557 | c->doc = "Set verbose printing of informational messages."; | |
3558 | showcmd->doc = "Show verbose printing of informational messages."; | |
3559 | } | |
3560 | else | |
3561 | { | |
3562 | c->doc = "Set verbosity."; | |
3563 | showcmd->doc = "Show verbosity."; | |
3564 | } | |
3565 | } | |
3566 | ||
3567 | static void | |
fba45db2 | 3568 | float_handler (int signo) |
9e0b60a8 JM |
3569 | { |
3570 | /* This message is based on ANSI C, section 4.7. Note that integer | |
3571 | divide by zero causes this, so "float" is a misnomer. */ | |
3572 | signal (SIGFPE, float_handler); | |
3573 | error ("Erroneous arithmetic operation."); | |
3574 | } | |
5d161b24 DB |
3575 | |
3576 | static void | |
fba45db2 | 3577 | set_debug (char *arg, int from_tty) |
5d161b24 | 3578 | { |
eb2f494a AC |
3579 | printf_unfiltered ("\"set debug\" must be followed by the name of a print subcommand.\n"); |
3580 | help_list (setdebuglist, "set debug ", -1, gdb_stdout); | |
5d161b24 DB |
3581 | } |
3582 | ||
3583 | static void | |
fba45db2 | 3584 | show_debug (char *args, int from_tty) |
5d161b24 | 3585 | { |
eb2f494a | 3586 | cmd_show_list (showdebuglist, from_tty, ""); |
5d161b24 | 3587 | } |
c5aa993b | 3588 | |
9e0b60a8 | 3589 | static void |
fba45db2 | 3590 | init_cmd_lists (void) |
9e0b60a8 JM |
3591 | { |
3592 | cmdlist = NULL; | |
3593 | infolist = NULL; | |
3594 | enablelist = NULL; | |
3595 | disablelist = NULL; | |
3596 | togglelist = NULL; | |
3597 | stoplist = NULL; | |
3598 | deletelist = NULL; | |
3599 | enablebreaklist = NULL; | |
3600 | setlist = NULL; | |
3601 | unsetlist = NULL; | |
3602 | showlist = NULL; | |
3603 | sethistlist = NULL; | |
3604 | showhistlist = NULL; | |
3605 | unsethistlist = NULL; | |
3606 | maintenancelist = NULL; | |
3607 | maintenanceinfolist = NULL; | |
3608 | maintenanceprintlist = NULL; | |
3609 | setprintlist = NULL; | |
3610 | showprintlist = NULL; | |
3611 | setchecklist = NULL; | |
3612 | showchecklist = NULL; | |
3613 | } | |
3614 | ||
3615 | /* Init the history buffer. Note that we are called after the init file(s) | |
3616 | * have been read so that the user can change the history file via his | |
3617 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
3618 | * overrides all of this. | |
3619 | */ | |
3620 | ||
3621 | void | |
fba45db2 | 3622 | init_history (void) |
9e0b60a8 JM |
3623 | { |
3624 | char *tmpenv; | |
3625 | ||
3626 | tmpenv = getenv ("HISTSIZE"); | |
3627 | if (tmpenv) | |
3628 | history_size = atoi (tmpenv); | |
3629 | else if (!history_size) | |
3630 | history_size = 256; | |
3631 | ||
3632 | stifle_history (history_size); | |
3633 | ||
3634 | tmpenv = getenv ("GDBHISTFILE"); | |
3635 | if (tmpenv) | |
c5aa993b JM |
3636 | history_filename = savestring (tmpenv, strlen (tmpenv)); |
3637 | else if (!history_filename) | |
3638 | { | |
3639 | /* We include the current directory so that if the user changes | |
3640 | directories the file written will be the same as the one | |
3641 | that was read. */ | |
a0b3c4fd | 3642 | #ifdef __MSDOS__ |
eb2f494a AC |
3643 | /* No leading dots in file names are allowed on MSDOS. */ |
3644 | history_filename = concat (current_directory, "/_gdb_history", NULL); | |
a0b3c4fd | 3645 | #else |
c5aa993b | 3646 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
a0b3c4fd | 3647 | #endif |
c5aa993b | 3648 | } |
9e0b60a8 JM |
3649 | read_history (history_filename); |
3650 | } | |
3651 | ||
3652 | static void | |
fba45db2 | 3653 | init_main (void) |
9e0b60a8 JM |
3654 | { |
3655 | struct cmd_list_element *c; | |
3656 | ||
3657 | /* If we are running the asynchronous version, | |
3658 | we initialize the prompts differently. */ | |
6426a772 | 3659 | if (!event_loop_p) |
9e0b60a8 | 3660 | { |
c5aa993b | 3661 | gdb_prompt_string = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
9e0b60a8 JM |
3662 | } |
3663 | else | |
3664 | { | |
3665 | /* initialize the prompt stack to a simple "(gdb) " prompt or to | |
96baa820 | 3666 | whatever the DEFAULT_PROMPT is. */ |
9e0b60a8 | 3667 | the_prompts.top = 0; |
c5aa993b | 3668 | PREFIX (0) = ""; |
c5aa993b | 3669 | PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
c5aa993b | 3670 | SUFFIX (0) = ""; |
9e0b60a8 | 3671 | /* Set things up for annotation_level > 1, if the user ever decides |
c5aa993b | 3672 | to use it. */ |
9e0b60a8 JM |
3673 | async_annotation_suffix = "prompt"; |
3674 | /* Set the variable associated with the setshow prompt command. */ | |
3675 | new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0))); | |
3676 | } | |
3677 | gdb_prompt_escape = 0; /* default to none. */ | |
3678 | ||
3679 | /* Set the important stuff up for command editing. */ | |
3680 | command_editing_p = 1; | |
9e0b60a8 JM |
3681 | history_expansion_p = 0; |
3682 | write_history_p = 0; | |
3683 | ||
3684 | /* Setup important stuff for command line editing. */ | |
3685 | rl_completion_entry_function = (int (*)()) readline_line_completion_function; | |
3686 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
3687 | rl_completer_quote_characters = gdb_completer_quote_characters; | |
3688 | rl_readline_name = "gdb"; | |
3689 | ||
3690 | /* Define the classes of commands. | |
3691 | They will appear in the help list in the reverse of this order. */ | |
3692 | ||
3693 | add_cmd ("internals", class_maintenance, NO_FUNCTION, | |
3694 | "Maintenance commands.\n\ | |
3695 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
3696 | These commands are subject to frequent change, and may not be as\n\ | |
3697 | well documented as user commands.", | |
3698 | &cmdlist); | |
3699 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); | |
3700 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
3701 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
3702 | The commands in this class are those defined by the user.\n\ | |
3703 | Use the \"define\" command to define a command.", &cmdlist); | |
3704 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
3705 | if (!dbx_commands) | |
3706 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
3707 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
3708 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
3709 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
3710 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
3711 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
3712 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
3713 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
3714 | Variable lookups are done with respect to the selected frame.\n\ | |
3715 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
3716 | The commands below can be used to select other frames by number or address.", | |
3717 | &cmdlist); | |
3718 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
3719 | ||
3720 | add_com ("pwd", class_files, pwd_command, | |
c5aa993b | 3721 | "Print working directory. This is used for your program as well."); |
9e0b60a8 | 3722 | c = add_cmd ("cd", class_files, cd_command, |
c5aa993b | 3723 | "Set working directory to DIR for debugger and program being debugged.\n\ |
9e0b60a8 JM |
3724 | The change does not take effect for the program being debugged\n\ |
3725 | until the next time it is started.", &cmdlist); | |
3726 | c->completer = filename_completer; | |
3727 | ||
3728 | /* The set prompt command is different depending whether or not the | |
3729 | async version is run. NOTE: this difference is going to | |
3730 | disappear as we make the event loop be the default engine of | |
3731 | gdb. */ | |
6426a772 | 3732 | if (!event_loop_p) |
9e0b60a8 JM |
3733 | { |
3734 | add_show_from_set | |
c5aa993b | 3735 | (add_set_cmd ("prompt", class_support, var_string, |
9e0b60a8 JM |
3736 | (char *) &gdb_prompt_string, "Set gdb's prompt", |
3737 | &setlist), | |
3738 | &showlist); | |
3739 | } | |
3740 | else | |
3741 | { | |
c5aa993b JM |
3742 | c = add_set_cmd ("prompt", class_support, var_string, |
3743 | (char *) &new_async_prompt, "Set gdb's prompt", | |
9e0b60a8 JM |
3744 | &setlist); |
3745 | add_show_from_set (c, &showlist); | |
3746 | c->function.sfunc = set_async_prompt; | |
3747 | } | |
3748 | ||
3749 | add_show_from_set | |
c5aa993b | 3750 | (add_set_cmd ("prompt-escape-char", class_support, var_zinteger, |
9e0b60a8 JM |
3751 | (char *) &gdb_prompt_escape, |
3752 | "Set escape character for formatting of gdb's prompt", | |
3753 | &setlist), | |
3754 | &showlist); | |
3755 | ||
3756 | add_com ("echo", class_support, echo_command, | |
3757 | "Print a constant string. Give string as argument.\n\ | |
3758 | C escape sequences may be used in the argument.\n\ | |
3759 | No newline is added at the end of the argument;\n\ | |
3760 | use \"\\n\" if you want a newline to be printed.\n\ | |
3761 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
3762 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
3763 | to be printed or after trailing whitespace."); | |
3764 | add_com ("document", class_support, document_command, | |
3765 | "Document a user-defined command.\n\ | |
3766 | Give command name as argument. Give documentation on following lines.\n\ | |
3767 | End with a line of just \"end\"."); | |
3768 | add_com ("define", class_support, define_command, | |
3769 | "Define a new command name. Command name is argument.\n\ | |
3770 | Definition appears on following lines, one command per line.\n\ | |
3771 | End with a line of just \"end\".\n\ | |
3772 | Use the \"document\" command to give documentation for the new command.\n\ | |
3773 | Commands defined in this way may have up to ten arguments."); | |
3774 | ||
3775 | #ifdef __STDC__ | |
3776 | c = add_cmd ("source", class_support, source_command, | |
c5aa993b | 3777 | "Read commands from a file named FILE.\n\ |
9e0b60a8 JM |
3778 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ |
3779 | when gdb is started.", &cmdlist); | |
3780 | #else | |
3781 | /* Punt file name, we can't help it easily. */ | |
3782 | c = add_cmd ("source", class_support, source_command, | |
c5aa993b | 3783 | "Read commands from a file named FILE.\n\ |
9e0b60a8 JM |
3784 | Note that the file \".gdbinit\" is read automatically in this way\n\ |
3785 | when gdb is started.", &cmdlist); | |
3786 | #endif | |
3787 | c->completer = filename_completer; | |
3788 | ||
3789 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
3790 | add_com ("help", class_support, help_command, "Print list of commands."); | |
3791 | add_com_alias ("q", "quit", class_support, 1); | |
3792 | add_com_alias ("h", "help", class_support, 1); | |
3793 | ||
3794 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ | |
3795 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
3796 | hitting return."); | |
3797 | ||
c5aa993b | 3798 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *) &info_verbose, |
9e0b60a8 JM |
3799 | "Set ", |
3800 | &setlist), | |
c5aa993b | 3801 | add_show_from_set (c, &showlist); |
9e0b60a8 JM |
3802 | c->function.sfunc = set_verbose; |
3803 | set_verbose (NULL, 0, c); | |
3804 | ||
3805 | /* The set editing command is different depending whether or not the | |
3806 | async version is run. NOTE: this difference is going to disappear | |
3807 | as we make the event loop be the default engine of gdb. */ | |
6426a772 | 3808 | if (!event_loop_p) |
9e0b60a8 JM |
3809 | { |
3810 | add_show_from_set | |
c5aa993b | 3811 | (add_set_cmd ("editing", class_support, var_boolean, (char *) &command_editing_p, |
9e0b60a8 JM |
3812 | "Set editing of command lines as they are typed.\n\ |
3813 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
3814 | Without an argument, command line editing is enabled. To edit, use\n\ | |
3815 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
3816 | &showlist); | |
3817 | } | |
3818 | else | |
3819 | { | |
c5aa993b | 3820 | c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p, |
9e0b60a8 JM |
3821 | "Set editing of command lines as they are typed.\n\ |
3822 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
3823 | Without an argument, command line editing is enabled. To edit, use\n\ | |
3824 | EMACS-like or VI-like commands like control-P or ESC.", &setlist); | |
3825 | ||
3826 | add_show_from_set (c, &showlist); | |
3827 | c->function.sfunc = set_async_editing_command; | |
3828 | } | |
3829 | ||
3830 | add_prefix_cmd ("history", class_support, set_history, | |
3831 | "Generic command for setting command history parameters.", | |
3832 | &sethistlist, "set history ", 0, &setlist); | |
3833 | add_prefix_cmd ("history", class_support, show_history, | |
3834 | "Generic command for showing command history parameters.", | |
3835 | &showhistlist, "show history ", 0, &showlist); | |
3836 | ||
3837 | add_show_from_set | |
c5aa993b JM |
3838 | (add_set_cmd ("expansion", no_class, var_boolean, (char *) &history_expansion_p, |
3839 | "Set history expansion on command input.\n\ | |
9e0b60a8 JM |
3840 | Without an argument, history expansion is enabled.", &sethistlist), |
3841 | &showhistlist); | |
3842 | ||
3843 | add_show_from_set | |
c5aa993b JM |
3844 | (add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p, |
3845 | "Set saving of the history record on exit.\n\ | |
9e0b60a8 JM |
3846 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
3847 | Without an argument, saving is enabled.", &sethistlist), | |
3848 | &showhistlist); | |
3849 | ||
c5aa993b | 3850 | c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size, |
9e0b60a8 JM |
3851 | "Set the size of the command history, \n\ |
3852 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
3853 | add_show_from_set (c, &showhistlist); | |
3854 | c->function.sfunc = set_history_size_command; | |
3855 | ||
3856 | add_show_from_set | |
c5aa993b JM |
3857 | (add_set_cmd ("filename", no_class, var_filename, (char *) &history_filename, |
3858 | "Set the filename in which to record the command history\n\ | |
9e0b60a8 JM |
3859 | (the list of previous commands of which a record is kept).", &sethistlist), |
3860 | &showhistlist); | |
3861 | ||
3862 | add_show_from_set | |
3863 | (add_set_cmd ("confirm", class_support, var_boolean, | |
c5aa993b | 3864 | (char *) &caution, |
9e0b60a8 JM |
3865 | "Set whether to confirm potentially dangerous operations.", |
3866 | &setlist), | |
3867 | &showlist); | |
3868 | ||
3869 | add_prefix_cmd ("info", class_info, info_command, | |
c5aa993b | 3870 | "Generic command for showing things about the program being debugged.", |
9e0b60a8 JM |
3871 | &infolist, "info ", 0, &cmdlist); |
3872 | add_com_alias ("i", "info", class_info, 1); | |
3873 | ||
3874 | add_com ("complete", class_obscure, complete_command, | |
3875 | "List the completions for the rest of the line as a command."); | |
3876 | ||
3877 | add_prefix_cmd ("show", class_info, show_command, | |
3878 | "Generic command for showing things about the debugger.", | |
3879 | &showlist, "show ", 0, &cmdlist); | |
3880 | /* Another way to get at the same thing. */ | |
3881 | add_info ("set", show_command, "Show all GDB settings."); | |
3882 | ||
3883 | add_cmd ("commands", no_class, show_commands, | |
3884 | "Show the history of commands you typed.\n\ | |
3885 | You can supply a command number to start with, or a `+' to start after\n\ | |
3886 | the previous command number shown.", | |
3887 | &showlist); | |
3888 | ||
3889 | add_cmd ("version", no_class, show_version, | |
3890 | "Show what version of GDB this is.", &showlist); | |
3891 | ||
3892 | add_com ("while", class_support, while_command, | |
c5aa993b | 3893 | "Execute nested commands WHILE the conditional expression is non zero.\n\ |
9e0b60a8 JM |
3894 | The conditional expression must follow the word `while' and must in turn be\n\ |
3895 | followed by a new line. The nested commands must be entered one per line,\n\ | |
3896 | and should be terminated by the word `end'."); | |
3897 | ||
3898 | add_com ("if", class_support, if_command, | |
c5aa993b | 3899 | "Execute nested commands once IF the conditional expression is non zero.\n\ |
9e0b60a8 JM |
3900 | The conditional expression must follow the word `if' and must in turn be\n\ |
3901 | followed by a new line. The nested commands must be entered one per line,\n\ | |
3902 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
3903 | is used, the same rules apply to its nested commands as to the first ones."); | |
3904 | ||
3905 | /* If target is open when baud changes, it doesn't take effect until the | |
3906 | next open (I think, not sure). */ | |
3907 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
c5aa993b | 3908 | var_zinteger, (char *) &baud_rate, |
9e0b60a8 JM |
3909 | "Set baud rate for remote serial I/O.\n\ |
3910 | This value is used to set the speed of the serial port when debugging\n\ | |
3911 | using remote targets.", &setlist), | |
3912 | &showlist); | |
3913 | ||
eb2f494a AC |
3914 | c = add_set_cmd ("remotedebug", no_class, var_zinteger, |
3915 | (char *) &remote_debug, | |
3916 | "Set debugging of remote protocol.\n\ | |
5d161b24 | 3917 | When enabled, each packet sent or received with the remote target\n\ |
eb2f494a AC |
3918 | is displayed.", &setlist); |
3919 | deprecate_cmd (c, "set debug remote"); | |
3920 | deprecate_cmd (add_show_from_set (c, &showlist), "show debug remote"); | |
5d161b24 | 3921 | |
eb2f494a AC |
3922 | add_show_from_set (add_set_cmd ("remote", no_class, var_zinteger, |
3923 | (char *) &remote_debug, | |
3924 | "Set debugging of remote protocol.\n\ | |
9e0b60a8 | 3925 | When enabled, each packet sent or received with the remote target\n\ |
5d161b24 | 3926 | is displayed.", &setdebuglist), |
eb2f494a | 3927 | &showdebuglist); |
9e0b60a8 JM |
3928 | |
3929 | add_show_from_set ( | |
c5aa993b JM |
3930 | add_set_cmd ("remotetimeout", no_class, var_integer, (char *) &remote_timeout, |
3931 | "Set timeout limit to wait for target to respond.\n\ | |
9e0b60a8 JM |
3932 | This value is used to set the time limit for gdb to wait for a response\n\ |
3933 | from the target.", &setlist), | |
c5aa993b | 3934 | &showlist); |
9e0b60a8 JM |
3935 | |
3936 | /* The set annotate command is different depending whether or not | |
3937 | the async version is run. NOTE: this difference is going to | |
3938 | disappear as we make the event loop be the default engine of | |
3939 | gdb. */ | |
6426a772 | 3940 | if (!event_loop_p) |
9e0b60a8 | 3941 | { |
c5aa993b JM |
3942 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
3943 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
3944 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
3945 | 2 == output annotated suitably for use by programs that control GDB.", | |
3946 | &setlist); | |
3947 | c = add_show_from_set (c, &showlist); | |
3948 | } | |
3949 | else | |
3950 | { | |
c5aa993b JM |
3951 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
3952 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
3953 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
3954 | 2 == output annotated suitably for use by programs that control GDB.", | |
c5aa993b | 3955 | &setlist); |
9e0b60a8 JM |
3956 | add_show_from_set (c, &showlist); |
3957 | c->function.sfunc = set_async_annotation_level; | |
3958 | } | |
6426a772 | 3959 | if (event_loop_p) |
104c1213 JM |
3960 | { |
3961 | add_show_from_set | |
3962 | (add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p, | |
3963 | "Set notification of completion for asynchronous execution commands.\n\ | |
3964 | Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist), | |
3965 | &showlist); | |
3966 | } | |
eb2f494a AC |
3967 | add_prefix_cmd ("debug", no_class, set_debug, |
3968 | "Generic command for setting gdb debugging flags", | |
3969 | &setdebuglist, "set debug ", 0, &setlist); | |
5d161b24 | 3970 | |
eb2f494a AC |
3971 | add_prefix_cmd ("debug", no_class, show_debug, |
3972 | "Generic command for showing gdb debugging flags", | |
3973 | &showdebuglist, "show debug ", 0, &showlist); | |
9e0b60a8 | 3974 | } |