Commit | Line | Data |
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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" |
c906108c | 35 | #include "top.h" |
d4f3574e | 36 | #include "version.h" |
c906108c SS |
37 | |
38 | /* readline include files */ | |
39 | #include <readline/readline.h> | |
40 | #include <readline/history.h> | |
41 | ||
42 | /* readline defines this. */ | |
43 | #undef savestring | |
44 | ||
45 | #include <sys/types.h> | |
c906108c | 46 | |
c4093a6a | 47 | #include <setjmp.h> |
2acceee2 | 48 | |
c2c6d25f | 49 | #include "event-top.h" |
c906108c SS |
50 | #include "gdb_string.h" |
51 | #include "gdb_stat.h" | |
52 | #include <ctype.h> | |
8b93c638 JM |
53 | #ifdef UI_OUT |
54 | #include "ui-out.h" | |
55 | #include "cli-out.h" | |
56 | #endif | |
c906108c | 57 | |
c906108c SS |
58 | /* Prototypes for local functions */ |
59 | ||
a14ed312 | 60 | static void dont_repeat_command (char *, int); |
c906108c | 61 | |
a14ed312 | 62 | static void source_cleanup_lines (PTR); |
c906108c | 63 | |
a14ed312 | 64 | static void user_defined_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void init_signals (void); |
c906108c SS |
67 | |
68 | #ifdef STOP_SIGNAL | |
a14ed312 | 69 | static void stop_sig (int); |
c906108c SS |
70 | #endif |
71 | ||
a14ed312 | 72 | static char *line_completion_function (char *, int, char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static char *readline_line_completion_function (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void while_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void if_command (char *, int); |
c906108c | 79 | |
a14ed312 KB |
80 | static struct command_line *build_command_line (enum command_control_type, |
81 | char *); | |
c906108c | 82 | |
a14ed312 KB |
83 | static struct command_line *get_command_line (enum command_control_type, |
84 | char *); | |
c906108c | 85 | |
a14ed312 | 86 | static void realloc_body_list (struct command_line *, int); |
c906108c | 87 | |
a14ed312 | 88 | static enum misc_command_type read_next_line (struct command_line **); |
c906108c SS |
89 | |
90 | static enum command_control_type | |
a14ed312 | 91 | recurse_read_control_structure (struct command_line *); |
c906108c | 92 | |
a14ed312 | 93 | static struct cleanup *setup_user_args (char *); |
c906108c | 94 | |
a14ed312 | 95 | static char *locate_arg (char *); |
c906108c | 96 | |
a14ed312 | 97 | static char *insert_args (char *); |
c906108c | 98 | |
e41a3b1a | 99 | static void arg_cleanup (void *); |
c906108c | 100 | |
a14ed312 | 101 | static void init_main (void); |
c906108c | 102 | |
a14ed312 | 103 | static void init_cmd_lists (void); |
c906108c | 104 | |
a14ed312 | 105 | static void float_handler (int); |
c906108c | 106 | |
a14ed312 | 107 | static void init_signals (void); |
c906108c | 108 | |
a14ed312 | 109 | static void set_verbose (char *, int, struct cmd_list_element *); |
c906108c | 110 | |
a14ed312 | 111 | static void show_history (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void set_history (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | static void set_history_size_command (char *, int, struct cmd_list_element *); |
c906108c | 116 | |
a14ed312 | 117 | static void show_commands (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static void echo_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static void pwd_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void show_version (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static void document_command (char *, int); |
c906108c | 126 | |
a14ed312 | 127 | static void define_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | static void validate_comname (char *); |
c906108c | 130 | |
a14ed312 | 131 | static void help_command (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | static void show_command (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | static void info_command (char *, int); |
c906108c | 136 | |
a14ed312 | 137 | static void complete_command (char *, int); |
c906108c | 138 | |
a14ed312 | 139 | static void do_nothing (int); |
c906108c | 140 | |
a14ed312 | 141 | static void show_debug (char *, int); |
5d161b24 | 142 | |
a14ed312 | 143 | static void set_debug (char *, int); |
5d161b24 | 144 | |
c906108c | 145 | #ifdef SIGHUP |
392a587b | 146 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
147 | gdb to use the event loop as the default command loop and we merge |
148 | event-top.c into this file, top.c */ | |
a14ed312 | 149 | /* static */ int quit_cover (PTR); |
c906108c | 150 | |
a14ed312 | 151 | static void disconnect (int); |
c906108c SS |
152 | #endif |
153 | ||
e41a3b1a AC |
154 | static void do_restore_instream_cleanup (void *stream); |
155 | ||
156 | static struct cleanup *make_cleanup_free_command_lines (struct command_line **); | |
c906108c | 157 | |
104c1213 JM |
158 | /* Default command line prompt. This is overriden in some configs. */ |
159 | ||
160 | #ifndef DEFAULT_PROMPT | |
161 | #define DEFAULT_PROMPT "(gdb) " | |
c906108c SS |
162 | #endif |
163 | ||
164 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
165 | ||
166 | #ifndef GDBINIT_FILENAME | |
167 | #define GDBINIT_FILENAME ".gdbinit" | |
168 | #endif | |
169 | char gdbinit[] = GDBINIT_FILENAME; | |
170 | ||
171 | int inhibit_gdbinit = 0; | |
172 | ||
173 | /* If nonzero, and GDB has been configured to be able to use windows, | |
174 | attempt to open them upon startup. */ | |
175 | ||
176 | int use_windows = 1; | |
177 | ||
c906108c SS |
178 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
179 | ||
180 | /* Flag for whether we want all the "from_tty" gubbish printed. */ | |
181 | ||
c5aa993b | 182 | int caution = 1; /* Default is yes, sigh. */ |
c906108c SS |
183 | |
184 | /* Define all cmd_list_elements. */ | |
185 | ||
186 | /* Chain containing all defined commands. */ | |
187 | ||
188 | struct cmd_list_element *cmdlist; | |
189 | ||
190 | /* Chain containing all defined info subcommands. */ | |
191 | ||
192 | struct cmd_list_element *infolist; | |
193 | ||
194 | /* Chain containing all defined enable subcommands. */ | |
195 | ||
196 | struct cmd_list_element *enablelist; | |
197 | ||
198 | /* Chain containing all defined disable subcommands. */ | |
199 | ||
200 | struct cmd_list_element *disablelist; | |
201 | ||
202 | /* Chain containing all defined toggle subcommands. */ | |
203 | ||
204 | struct cmd_list_element *togglelist; | |
205 | ||
206 | /* Chain containing all defined stop subcommands. */ | |
207 | ||
208 | struct cmd_list_element *stoplist; | |
209 | ||
210 | /* Chain containing all defined delete subcommands. */ | |
211 | ||
212 | struct cmd_list_element *deletelist; | |
213 | ||
214 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
215 | ||
216 | struct cmd_list_element *enablebreaklist; | |
217 | ||
218 | /* Chain containing all defined set subcommands */ | |
219 | ||
220 | struct cmd_list_element *setlist; | |
221 | ||
222 | /* Chain containing all defined unset subcommands */ | |
223 | ||
224 | struct cmd_list_element *unsetlist; | |
225 | ||
226 | /* Chain containing all defined show subcommands. */ | |
227 | ||
228 | struct cmd_list_element *showlist; | |
229 | ||
230 | /* Chain containing all defined \"set history\". */ | |
231 | ||
232 | struct cmd_list_element *sethistlist; | |
233 | ||
234 | /* Chain containing all defined \"show history\". */ | |
235 | ||
236 | struct cmd_list_element *showhistlist; | |
237 | ||
238 | /* Chain containing all defined \"unset history\". */ | |
239 | ||
240 | struct cmd_list_element *unsethistlist; | |
241 | ||
242 | /* Chain containing all defined maintenance subcommands. */ | |
243 | ||
c906108c | 244 | struct cmd_list_element *maintenancelist; |
c906108c SS |
245 | |
246 | /* Chain containing all defined "maintenance info" subcommands. */ | |
247 | ||
c906108c | 248 | struct cmd_list_element *maintenanceinfolist; |
c906108c SS |
249 | |
250 | /* Chain containing all defined "maintenance print" subcommands. */ | |
251 | ||
c906108c | 252 | struct cmd_list_element *maintenanceprintlist; |
c906108c SS |
253 | |
254 | struct cmd_list_element *setprintlist; | |
255 | ||
256 | struct cmd_list_element *showprintlist; | |
257 | ||
5d161b24 DB |
258 | struct cmd_list_element *setdebuglist; |
259 | ||
260 | struct cmd_list_element *showdebuglist; | |
261 | ||
c906108c SS |
262 | struct cmd_list_element *setchecklist; |
263 | ||
264 | struct cmd_list_element *showchecklist; | |
265 | ||
266 | /* stdio stream that command input is being read from. Set to stdin normally. | |
267 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
268 | executing a user-defined command or interacting via a GUI. */ | |
269 | ||
270 | FILE *instream; | |
271 | ||
272 | /* Current working directory. */ | |
273 | ||
274 | char *current_directory; | |
275 | ||
276 | /* The directory name is actually stored here (usually). */ | |
277 | char gdb_dirbuf[1024]; | |
278 | ||
279 | /* Function to call before reading a command, if nonzero. | |
280 | The function receives two args: an input stream, | |
281 | and a prompt string. */ | |
282 | ||
507f3c78 | 283 | void (*window_hook) (FILE *, char *); |
c906108c SS |
284 | |
285 | int epoch_interface; | |
286 | int xgdb_verbose; | |
287 | ||
288 | /* gdb prints this when reading a command interactively */ | |
c5aa993b | 289 | static char *gdb_prompt_string; /* the global prompt string */ |
a14ed312 | 290 | extern char *get_prompt (void); /* access function for prompt string */ |
c906108c SS |
291 | |
292 | /* Buffer used for reading command lines, and the size | |
293 | allocated for it so far. */ | |
294 | ||
295 | char *line; | |
296 | int linesize = 100; | |
297 | ||
298 | /* Nonzero if the current command is modified by "server ". This | |
c2d11a7d | 299 | affects things like recording into the command history, commands |
c906108c SS |
300 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, |
301 | whatever) can issue its own commands and also send along commands | |
302 | from the user, and have the user not notice that the user interface | |
303 | is issuing commands too. */ | |
304 | int server_command; | |
305 | ||
306 | /* Baud rate specified for talking to serial target systems. Default | |
307 | is left as -1, so targets can choose their own defaults. */ | |
308 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 | |
309 | or (unsigned int)-1. This is a Bad User Interface. */ | |
310 | ||
311 | int baud_rate = -1; | |
312 | ||
313 | /* Timeout limit for response from target. */ | |
314 | ||
ce808e91 AC |
315 | /* The default value has been changed many times over the years. It |
316 | was originally 5 seconds. But that was thought to be a long time | |
317 | to sit and wait, so it was changed to 2 seconds. That was thought | |
318 | to be plenty unless the connection was going through some terminal | |
319 | server or multiplexer or other form of hairy serial connection. | |
320 | ||
321 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
322 | it began being used in other remote-* targets. It appears that the | |
323 | default was changed to 20 seconds at that time, perhaps because the | |
324 | Hitachi E7000 ICE didn't always respond in a timely manner. | |
325 | ||
326 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
327 | 20 seconds is far worse. This demonstrates the difficulty of using | |
328 | a single variable for all protocol timeouts. | |
329 | ||
330 | As remote.c is used much more than remote-e7000.c, it was changed | |
331 | back to 2 seconds in 1999. */ | |
332 | ||
333 | int remote_timeout = 2; | |
c906108c SS |
334 | |
335 | /* Non-zero tells remote* modules to output debugging info. */ | |
336 | ||
337 | int remote_debug = 0; | |
338 | ||
43ff13b4 JM |
339 | /* Non-zero means the target is running. Note: this is different from |
340 | saying that there is an active target and we are stopped at a | |
341 | breakpoint, for instance. This is a real indicator whether the | |
342 | target is off and running, which gdb is doing something else. */ | |
343 | int target_executing = 0; | |
344 | ||
c906108c SS |
345 | /* Level of control structure. */ |
346 | static int control_level; | |
347 | ||
348 | /* Structure for arguments to user defined functions. */ | |
349 | #define MAXUSERARGS 10 | |
350 | struct user_args | |
c5aa993b JM |
351 | { |
352 | struct user_args *next; | |
353 | struct | |
354 | { | |
355 | char *arg; | |
356 | int len; | |
357 | } | |
358 | a[MAXUSERARGS]; | |
359 | int count; | |
360 | } | |
361 | *user_args; | |
c906108c SS |
362 | |
363 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
364 | ||
365 | #ifndef STOP_SIGNAL | |
366 | #ifdef SIGTSTP | |
367 | #define STOP_SIGNAL SIGTSTP | |
a14ed312 | 368 | static void stop_sig (int); |
c906108c SS |
369 | #endif |
370 | #endif | |
371 | ||
372 | /* Some System V have job control but not sigsetmask(). */ | |
373 | #if !defined (HAVE_SIGSETMASK) | |
374 | #if !defined (USG) | |
375 | #define HAVE_SIGSETMASK 1 | |
376 | #else | |
377 | #define HAVE_SIGSETMASK 0 | |
378 | #endif | |
379 | #endif | |
380 | ||
381 | #if 0 == (HAVE_SIGSETMASK) | |
382 | #define sigsetmask(n) | |
383 | #endif | |
384 | ||
385 | /* Hooks for alternate command interfaces. */ | |
386 | ||
387 | /* Called after most modules have been initialized, but before taking users | |
388 | command file. */ | |
389 | ||
507f3c78 | 390 | void (*init_ui_hook) (char *argv0); |
7a292a7a SS |
391 | |
392 | /* This hook is called from within gdb's many mini-event loops which could | |
393 | steal control from a real user interface's event loop. It returns | |
394 | non-zero if the user is requesting a detach, zero otherwise. */ | |
395 | ||
507f3c78 | 396 | int (*ui_loop_hook) (int); |
c906108c SS |
397 | |
398 | /* Called instead of command_loop at top level. Can be invoked via | |
399 | return_to_top_level. */ | |
400 | ||
507f3c78 | 401 | void (*command_loop_hook) (void); |
c906108c SS |
402 | |
403 | ||
c906108c SS |
404 | /* Called from print_frame_info to list the line we stopped in. */ |
405 | ||
507f3c78 KB |
406 | void (*print_frame_info_listing_hook) (struct symtab * s, int line, |
407 | int stopline, int noerror); | |
c906108c SS |
408 | /* Replaces most of query. */ |
409 | ||
507f3c78 | 410 | int (*query_hook) (const char *, va_list); |
c906108c SS |
411 | |
412 | /* Replaces most of warning. */ | |
413 | ||
507f3c78 | 414 | void (*warning_hook) (const char *, va_list); |
c906108c | 415 | |
c906108c SS |
416 | /* These three functions support getting lines of text from the user. They |
417 | are used in sequence. First readline_begin_hook is called with a text | |
418 | string that might be (for example) a message for the user to type in a | |
419 | sequence of commands to be executed at a breakpoint. If this function | |
420 | calls back to a GUI, it might take this opportunity to pop up a text | |
421 | interaction window with this message. Next, readline_hook is called | |
422 | with a prompt that is emitted prior to collecting the user input. | |
423 | It can be called multiple times. Finally, readline_end_hook is called | |
424 | to notify the GUI that we are done with the interaction window and it | |
425 | can close it. */ | |
426 | ||
507f3c78 KB |
427 | void (*readline_begin_hook) (char *, ...); |
428 | char *(*readline_hook) (char *); | |
429 | void (*readline_end_hook) (void); | |
c906108c SS |
430 | |
431 | /* Called as appropriate to notify the interface of the specified breakpoint | |
432 | conditions. */ | |
433 | ||
507f3c78 KB |
434 | void (*create_breakpoint_hook) (struct breakpoint * bpt); |
435 | void (*delete_breakpoint_hook) (struct breakpoint * bpt); | |
436 | void (*modify_breakpoint_hook) (struct breakpoint * bpt); | |
c906108c | 437 | |
6426a772 JM |
438 | /* Called as appropriate to notify the interface that we have attached |
439 | to or detached from an already running process. */ | |
440 | ||
507f3c78 KB |
441 | void (*attach_hook) (void); |
442 | void (*detach_hook) (void); | |
6426a772 | 443 | |
c906108c SS |
444 | /* Called during long calculations to allow GUI to repair window damage, and to |
445 | check for stop buttons, etc... */ | |
446 | ||
507f3c78 | 447 | void (*interactive_hook) (void); |
c906108c SS |
448 | |
449 | /* Called when the registers have changed, as a hint to a GUI | |
450 | to minimize window update. */ | |
451 | ||
507f3c78 | 452 | void (*registers_changed_hook) (void); |
c906108c SS |
453 | |
454 | /* Tell the GUI someone changed the register REGNO. -1 means | |
455 | that the caller does not know which register changed or | |
c5aa993b | 456 | that several registers have changed (see value_assign). */ |
507f3c78 | 457 | void (*register_changed_hook) (int regno); |
c906108c SS |
458 | |
459 | /* Tell the GUI someone changed LEN bytes of memory at ADDR */ | |
507f3c78 | 460 | void (*memory_changed_hook) (CORE_ADDR addr, int len); |
c906108c SS |
461 | |
462 | /* Called when going to wait for the target. Usually allows the GUI to run | |
463 | while waiting for target events. */ | |
464 | ||
507f3c78 | 465 | int (*target_wait_hook) (int pid, struct target_waitstatus * status); |
c906108c SS |
466 | |
467 | /* Used by UI as a wrapper around command execution. May do various things | |
468 | like enabling/disabling buttons, etc... */ | |
469 | ||
507f3c78 KB |
470 | void (*call_command_hook) (struct cmd_list_element * c, char *cmd, |
471 | int from_tty); | |
c906108c | 472 | |
96baa820 JM |
473 | /* Called after a `set' command has finished. Is only run if the |
474 | `set' command succeeded. */ | |
475 | ||
eb2f494a | 476 | void (*set_hook) (struct cmd_list_element * c); |
96baa820 | 477 | |
c906108c SS |
478 | /* Called when the current thread changes. Argument is thread id. */ |
479 | ||
507f3c78 | 480 | void (*context_hook) (int id); |
c906108c SS |
481 | |
482 | /* Takes control from error (). Typically used to prevent longjmps out of the | |
483 | middle of the GUI. Usually used in conjunction with a catch routine. */ | |
484 | ||
eb2f494a | 485 | NORETURN void (*error_hook) (void) ATTR_NORETURN; |
c906108c | 486 | \f |
c5aa993b | 487 | |
99eeeb0f ND |
488 | /* One should use catch_errors rather than manipulating these |
489 | directly. */ | |
c4093a6a JM |
490 | #if defined(HAVE_SIGSETJMP) |
491 | #define SIGJMP_BUF sigjmp_buf | |
492 | #define SIGSETJMP(buf) sigsetjmp(buf, 1) | |
493 | #define SIGLONGJMP(buf,val) siglongjmp(buf,val) | |
494 | #else | |
495 | #define SIGJMP_BUF jmp_buf | |
496 | #define SIGSETJMP(buf) setjmp(buf) | |
497 | #define SIGLONGJMP(buf,val) longjmp(buf,val) | |
498 | #endif | |
499 | ||
99eeeb0f ND |
500 | /* Where to go for return_to_top_level. */ |
501 | static SIGJMP_BUF *catch_return; | |
c906108c | 502 | |
99eeeb0f | 503 | /* Return for reason REASON to the nearest containing catch_errors(). */ |
c906108c | 504 | |
c2d11a7d | 505 | NORETURN void |
6426a772 | 506 | return_to_top_level (reason) |
c906108c SS |
507 | enum return_reason reason; |
508 | { | |
509 | quit_flag = 0; | |
510 | immediate_quit = 0; | |
511 | ||
512 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
513 | I can think of a reason why that is vital, though). */ | |
c5aa993b | 514 | bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */ |
c906108c SS |
515 | |
516 | disable_current_display (); | |
517 | do_cleanups (ALL_CLEANUPS); | |
c4093a6a | 518 | if (event_loop_p && target_can_async_p () && !target_executing) |
43ff13b4 | 519 | do_exec_cleanups (ALL_CLEANUPS); |
6426a772 JM |
520 | if (event_loop_p && sync_execution) |
521 | do_exec_error_cleanups (ALL_CLEANUPS); | |
c906108c SS |
522 | |
523 | if (annotation_level > 1) | |
524 | switch (reason) | |
525 | { | |
526 | case RETURN_QUIT: | |
527 | annotate_quit (); | |
528 | break; | |
529 | case RETURN_ERROR: | |
530 | annotate_error (); | |
531 | break; | |
532 | } | |
533 | ||
99eeeb0f ND |
534 | /* Jump to the containing catch_errors() call, communicating REASON |
535 | to that call via setjmp's return value. Note that REASON can't | |
536 | be zero, by definition in defs.h. */ | |
537 | ||
eb2f494a | 538 | (NORETURN void) SIGLONGJMP (*catch_return, (int) reason); |
c906108c SS |
539 | } |
540 | ||
541 | /* Call FUNC with arg ARGS, catching any errors. If there is no | |
542 | error, return the value returned by FUNC. If there is an error, | |
543 | print ERRSTRING, print the specific error message, then return | |
544 | zero. | |
545 | ||
546 | Must not be called with immediate_quit in effect (bad things might | |
547 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
548 | This is an OK restriction; with very few exceptions immediate_quit can | |
549 | be replaced by judicious use of QUIT. | |
550 | ||
551 | MASK specifies what to catch; it is normally set to | |
552 | RETURN_MASK_ALL, if for no other reason than that the code which | |
553 | calls catch_errors might not be set up to deal with a quit which | |
554 | isn't caught. But if the code can deal with it, it generally | |
555 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
556 | useful to abort only the portion of the operation inside the | |
557 | catch_errors. Note that quit should return to the command line | |
558 | fairly quickly, even if some further processing is being done. */ | |
559 | ||
11cf8741 JM |
560 | /* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with |
561 | error() et.al. could maintain a set of flags that indicate the the | |
562 | current state of each of the longjmp buffers. This would give the | |
563 | longjmp code the chance to detect a longjmp botch (before it gets | |
564 | to longjmperror()). Prior to 1999-11-05 this wasn't possible as | |
565 | code also randomly used a SET_TOP_LEVEL macro that directly | |
566 | initialize the longjmp buffers. */ | |
567 | ||
11cf8741 JM |
568 | /* MAYBE: cagney/1999-11-05: Should the catch_erros and cleanups code |
569 | be consolidated into a single file instead of being distributed | |
570 | between utils.c and top.c? */ | |
571 | ||
c906108c SS |
572 | int |
573 | catch_errors (func, args, errstring, mask) | |
574 | catch_errors_ftype *func; | |
575 | PTR args; | |
576 | char *errstring; | |
577 | return_mask mask; | |
578 | { | |
99eeeb0f ND |
579 | SIGJMP_BUF *saved_catch; |
580 | SIGJMP_BUF catch; | |
c906108c SS |
581 | int val; |
582 | struct cleanup *saved_cleanup_chain; | |
583 | char *saved_error_pre_print; | |
584 | char *saved_quit_pre_print; | |
585 | ||
99eeeb0f ND |
586 | /* Return value from SIGSETJMP(): enum return_reason if error or |
587 | quit caught, 0 otherwise. */ | |
588 | int caught; | |
589 | ||
590 | /* Override error/quit messages during FUNC. */ | |
591 | ||
c906108c SS |
592 | saved_error_pre_print = error_pre_print; |
593 | saved_quit_pre_print = quit_pre_print; | |
594 | ||
595 | if (mask & RETURN_MASK_ERROR) | |
99eeeb0f | 596 | error_pre_print = errstring; |
c906108c | 597 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
598 | quit_pre_print = errstring; |
599 | ||
600 | /* Prevent error/quit during FUNC from calling cleanups established | |
601 | prior to here. */ | |
602 | ||
603 | saved_cleanup_chain = save_cleanups (); | |
604 | ||
605 | /* Call FUNC, catching error/quit events. */ | |
606 | ||
607 | saved_catch = catch_return; | |
608 | catch_return = &catch; | |
609 | caught = SIGSETJMP (catch); | |
610 | if (!caught) | |
611 | val = (*func) (args); | |
612 | catch_return = saved_catch; | |
613 | ||
614 | /* FIXME: cagney/1999-11-05: A correct FUNC implementaton will | |
615 | clean things up (restoring the cleanup chain) to the state they | |
616 | were just prior to the call. Unfortunatly, many FUNC's are not | |
617 | that well behaved. This could be fixed by adding either a | |
618 | do_cleanups call (to cover the problem) or an assertion check to | |
619 | detect bad FUNCs code. */ | |
620 | ||
621 | /* Restore the cleanup chain and error/quit messages to their | |
622 | original states. */ | |
c906108c SS |
623 | |
624 | restore_cleanups (saved_cleanup_chain); | |
625 | ||
c906108c | 626 | if (mask & RETURN_MASK_QUIT) |
99eeeb0f ND |
627 | quit_pre_print = saved_quit_pre_print; |
628 | if (mask & RETURN_MASK_ERROR) | |
629 | error_pre_print = saved_error_pre_print; | |
630 | ||
631 | /* Return normally if no error/quit event occurred. */ | |
632 | ||
633 | if (!caught) | |
634 | return val; | |
635 | ||
636 | /* If the caller didn't request that the event be caught, relay the | |
637 | event to the next containing catch_errors(). */ | |
638 | ||
639 | if (!(mask & RETURN_MASK (caught))) | |
640 | return_to_top_level (caught); | |
641 | ||
642 | /* Tell the caller that an event was caught. | |
643 | ||
644 | FIXME: nsd/2000-02-22: When MASK is RETURN_MASK_ALL, the caller | |
645 | can't tell what type of event occurred. | |
646 | ||
647 | A possible fix is to add a new interface, catch_event(), that | |
648 | returns enum return_reason after catching an error or a quit. | |
649 | ||
650 | When returning normally, i.e. without catching an error or a | |
651 | quit, catch_event() could return RETURN_NORMAL, which would be | |
652 | added to enum return_reason. FUNC would return information | |
653 | exclusively via ARGS. | |
654 | ||
655 | Alternatively, normal catch_event() could return FUNC's return | |
656 | value. The caller would need to be aware of potential overlap | |
657 | with enum return_reason, which could be publicly restricted to | |
658 | negative values to simplify return value processing in FUNC and | |
659 | in the caller. */ | |
660 | ||
661 | return 0; | |
c906108c SS |
662 | } |
663 | ||
11cf8741 JM |
664 | struct captured_command_args |
665 | { | |
666 | catch_command_errors_ftype *command; | |
667 | char *arg; | |
668 | int from_tty; | |
669 | }; | |
670 | ||
671 | static int | |
672 | do_captured_command (void *data) | |
673 | { | |
674 | struct captured_command_args *context = data; | |
675 | context->command (context->arg, context->from_tty); | |
676 | /* FIXME: cagney/1999-11-07: Technically this do_cleanups() call | |
677 | isn't needed. Instead an assertion check could be made that | |
678 | simply confirmed that the called function correctly cleaned up | |
679 | after its self. Unfortunatly, old code (prior to 1999-11-04) in | |
680 | main.c was calling SET_TOP_LEVEL(), calling the command function, | |
681 | and then *always* calling do_cleanups(). For the moment we | |
682 | remain ``bug compatible'' with that old code.. */ | |
683 | do_cleanups (ALL_CLEANUPS); | |
684 | return 1; | |
685 | } | |
686 | ||
687 | int | |
eb2f494a | 688 | catch_command_errors (catch_command_errors_ftype * command, |
11cf8741 JM |
689 | char *arg, int from_tty, return_mask mask) |
690 | { | |
691 | struct captured_command_args args; | |
692 | args.command = command; | |
693 | args.arg = arg; | |
694 | args.from_tty = from_tty; | |
695 | return catch_errors (do_captured_command, &args, "", mask); | |
696 | } | |
697 | ||
698 | ||
c906108c SS |
699 | /* Handler for SIGHUP. */ |
700 | ||
701 | #ifdef SIGHUP | |
702 | static void | |
703 | disconnect (signo) | |
c5aa993b | 704 | int signo; |
c906108c SS |
705 | { |
706 | catch_errors (quit_cover, NULL, | |
c5aa993b | 707 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
c906108c SS |
708 | signal (SIGHUP, SIG_DFL); |
709 | kill (getpid (), SIGHUP); | |
710 | } | |
711 | ||
712 | /* Just a little helper function for disconnect(). */ | |
713 | ||
392a587b | 714 | /* NOTE 1999-04-29: This function will be static again, once we modify |
cd0fc7c3 SS |
715 | gdb to use the event loop as the default command loop and we merge |
716 | event-top.c into this file, top.c */ | |
717 | /* static */ int | |
c906108c SS |
718 | quit_cover (s) |
719 | PTR s; | |
720 | { | |
c5aa993b JM |
721 | caution = 0; /* Throw caution to the wind -- we're exiting. |
722 | This prevents asking the user dumb questions. */ | |
723 | quit_command ((char *) 0, 0); | |
c906108c SS |
724 | return 0; |
725 | } | |
726 | #endif /* defined SIGHUP */ | |
727 | \f | |
728 | /* Line number we are currently in in a file which is being sourced. */ | |
392a587b | 729 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
730 | gdb to use the event loop as the default command loop and we merge |
731 | event-top.c into this file, top.c */ | |
732 | /* static */ int source_line_number; | |
c906108c SS |
733 | |
734 | /* Name of the file we are sourcing. */ | |
392a587b | 735 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
736 | gdb to use the event loop as the default command loop and we merge |
737 | event-top.c into this file, top.c */ | |
738 | /* static */ char *source_file_name; | |
c906108c SS |
739 | |
740 | /* Buffer containing the error_pre_print used by the source stuff. | |
741 | Malloc'd. */ | |
392a587b | 742 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
743 | gdb to use the event loop as the default command loop and we merge |
744 | event-top.c into this file, top.c */ | |
745 | /* static */ char *source_error; | |
c906108c SS |
746 | static int source_error_allocated; |
747 | ||
748 | /* Something to glom on to the start of error_pre_print if source_file_name | |
749 | is set. */ | |
392a587b | 750 | /* NOTE 1999-04-29: This variable will be static again, once we modify |
cd0fc7c3 SS |
751 | gdb to use the event loop as the default command loop and we merge |
752 | event-top.c into this file, top.c */ | |
753 | /* static */ char *source_pre_error; | |
c906108c SS |
754 | |
755 | /* Clean up on error during a "source" command (or execution of a | |
756 | user-defined command). */ | |
757 | ||
758 | static void | |
e41a3b1a | 759 | do_restore_instream_cleanup (void *stream) |
c906108c SS |
760 | { |
761 | /* Restore the previous input stream. */ | |
762 | instream = stream; | |
763 | } | |
764 | ||
765 | /* Read commands from STREAM. */ | |
766 | void | |
767 | read_command_file (stream) | |
768 | FILE *stream; | |
769 | { | |
770 | struct cleanup *cleanups; | |
771 | ||
e41a3b1a | 772 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c | 773 | instream = stream; |
c5aa993b | 774 | command_loop (); |
c906108c SS |
775 | do_cleanups (cleanups); |
776 | } | |
777 | \f | |
a14ed312 | 778 | extern void init_proc (void); |
c906108c | 779 | |
507f3c78 | 780 | void (*pre_init_ui_hook) (void); |
c906108c | 781 | |
e41a3b1a AC |
782 | #ifdef __MSDOS__ |
783 | void | |
784 | do_chdir_cleanup (void *old_dir) | |
785 | { | |
786 | chdir (old_dir); | |
787 | free (old_dir); | |
788 | } | |
789 | #endif | |
790 | ||
c906108c SS |
791 | void |
792 | gdb_init (argv0) | |
793 | char *argv0; | |
794 | { | |
795 | if (pre_init_ui_hook) | |
796 | pre_init_ui_hook (); | |
797 | ||
798 | /* Run the init function of each source file */ | |
799 | ||
800 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
801 | current_directory = gdb_dirbuf; | |
802 | ||
a0b3c4fd JM |
803 | #ifdef __MSDOS__ |
804 | /* Make sure we return to the original directory upon exit, come | |
805 | what may, since the OS doesn't do that for us. */ | |
e41a3b1a | 806 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); |
a0b3c4fd JM |
807 | #endif |
808 | ||
c5aa993b JM |
809 | init_cmd_lists (); /* This needs to be done first */ |
810 | initialize_targets (); /* Setup target_terminal macros for utils.c */ | |
811 | initialize_utils (); /* Make errors and warnings possible */ | |
c906108c | 812 | initialize_all_files (); |
e514a9d6 | 813 | initialize_current_architecture (); |
c5aa993b | 814 | init_main (); /* But that omits this file! Do it now */ |
cd0fc7c3 SS |
815 | |
816 | /* The signal handling mechanism is different depending whether or | |
817 | not the async version is run. NOTE: in the future we plan to make | |
818 | the event loop be the default engine of gdb, and this difference | |
819 | will disappear. */ | |
6426a772 | 820 | if (event_loop_p) |
cd0fc7c3 SS |
821 | async_init_signals (); |
822 | else | |
c5aa993b | 823 | init_signals (); |
c906108c | 824 | |
c906108c SS |
825 | /* We need a default language for parsing expressions, so simple things like |
826 | "set width 0" won't fail if no language is explicitly set in a config file | |
827 | or implicitly set by reading an executable during startup. */ | |
828 | set_language (language_c); | |
c5aa993b | 829 | expected_language = current_language; /* don't warn about the change. */ |
c906108c | 830 | |
8b93c638 JM |
831 | #ifdef UI_OUT |
832 | /* Install the default UI */ | |
833 | uiout = cli_out_new (gdb_stdout); | |
834 | #endif | |
fb40c209 AC |
835 | |
836 | #ifdef UI_OUT | |
837 | /* All the interpreters should have had a look at things by now. | |
838 | Initialize the selected interpreter. */ | |
839 | if (interpreter_p && !init_ui_hook) | |
840 | { | |
841 | fprintf_unfiltered (gdb_stderr, "Interpreter `%s' unrecognized.\n", | |
842 | interpreter_p); | |
843 | exit (1); | |
844 | } | |
845 | #endif | |
8b93c638 | 846 | |
c906108c SS |
847 | if (init_ui_hook) |
848 | init_ui_hook (argv0); | |
849 | } | |
850 | ||
851 | /* Allocate, initialize a new command line structure for one of the | |
852 | control commands (if/while). */ | |
853 | ||
854 | static struct command_line * | |
855 | build_command_line (type, args) | |
856 | enum command_control_type type; | |
857 | char *args; | |
858 | { | |
859 | struct command_line *cmd; | |
860 | ||
861 | if (args == NULL) | |
862 | error ("if/while commands require arguments.\n"); | |
863 | ||
c5aa993b | 864 | cmd = (struct command_line *) xmalloc (sizeof (struct command_line)); |
c906108c SS |
865 | cmd->next = NULL; |
866 | cmd->control_type = type; | |
867 | ||
868 | cmd->body_count = 1; | |
869 | cmd->body_list | |
c5aa993b JM |
870 | = (struct command_line **) xmalloc (sizeof (struct command_line *) |
871 | * cmd->body_count); | |
c906108c SS |
872 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); |
873 | cmd->line = savestring (args, strlen (args)); | |
874 | return cmd; | |
875 | } | |
876 | ||
877 | /* Build and return a new command structure for the control commands | |
878 | such as "if" and "while". */ | |
879 | ||
880 | static struct command_line * | |
881 | get_command_line (type, arg) | |
882 | enum command_control_type type; | |
883 | char *arg; | |
884 | { | |
885 | struct command_line *cmd; | |
886 | struct cleanup *old_chain = NULL; | |
887 | ||
888 | /* Allocate and build a new command line structure. */ | |
889 | cmd = build_command_line (type, arg); | |
890 | ||
e41a3b1a | 891 | old_chain = make_cleanup_free_command_lines (&cmd); |
c906108c SS |
892 | |
893 | /* Read in the body of this command. */ | |
894 | if (recurse_read_control_structure (cmd) == invalid_control) | |
895 | { | |
896 | warning ("error reading in control structure\n"); | |
897 | do_cleanups (old_chain); | |
898 | return NULL; | |
899 | } | |
900 | ||
901 | discard_cleanups (old_chain); | |
902 | return cmd; | |
903 | } | |
904 | ||
905 | /* Recursively print a command (including full control structures). */ | |
8b93c638 JM |
906 | #ifdef UI_OUT |
907 | void | |
908 | print_command_lines (uiout, cmd, depth) | |
909 | struct ui_out *uiout; | |
910 | struct command_line *cmd; | |
911 | unsigned int depth; | |
912 | { | |
913 | struct command_line *list; | |
914 | ||
915 | list = cmd; | |
916 | while (list) | |
917 | { | |
918 | ||
919 | if (depth) | |
920 | ui_out_spaces (uiout, 2 * depth); | |
921 | ||
922 | /* A simple command, print it and continue. */ | |
923 | if (list->control_type == simple_control) | |
924 | { | |
925 | ui_out_field_string (uiout, NULL, list->line); | |
926 | ui_out_text (uiout, "\n"); | |
927 | list = list->next; | |
928 | continue; | |
929 | } | |
930 | ||
931 | /* loop_continue to jump to the start of a while loop, print it | |
932 | and continue. */ | |
933 | if (list->control_type == continue_control) | |
934 | { | |
935 | ui_out_field_string (uiout, NULL, "loop_continue"); | |
936 | ui_out_text (uiout, "\n"); | |
937 | list = list->next; | |
938 | continue; | |
939 | } | |
940 | ||
941 | /* loop_break to break out of a while loop, print it and continue. */ | |
942 | if (list->control_type == break_control) | |
943 | { | |
944 | ui_out_field_string (uiout, NULL, "loop_break"); | |
945 | ui_out_text (uiout, "\n"); | |
946 | list = list->next; | |
947 | continue; | |
948 | } | |
949 | ||
950 | /* A while command. Recursively print its subcommands and continue. */ | |
951 | if (list->control_type == while_control) | |
952 | { | |
953 | ui_out_text (uiout, "while "); | |
954 | ui_out_field_fmt (uiout, NULL, "while %s", list->line); | |
955 | ui_out_text (uiout, "\n"); | |
956 | print_command_lines (uiout, *list->body_list, depth + 1); | |
957 | ui_out_field_string (uiout, NULL, "end"); | |
958 | if (depth) | |
959 | ui_out_spaces (uiout, 2 * depth); | |
960 | ui_out_text (uiout, "end\n"); | |
961 | list = list->next; | |
962 | continue; | |
963 | } | |
964 | ||
965 | /* An if command. Recursively print both arms before continueing. */ | |
966 | if (list->control_type == if_control) | |
967 | { | |
968 | ui_out_text (uiout, "if "); | |
969 | ui_out_field_fmt (uiout, NULL, "if %s", list->line); | |
970 | ui_out_text (uiout, "\n"); | |
971 | /* The true arm. */ | |
972 | print_command_lines (uiout, list->body_list[0], depth + 1); | |
973 | ||
974 | /* Show the false arm if it exists. */ | |
975 | if (list->body_count == 2) | |
976 | { | |
977 | if (depth) | |
978 | ui_out_spaces (uiout, 2 * depth); | |
979 | ui_out_field_string (uiout, NULL, "else"); | |
980 | ui_out_text (uiout, "else\n"); | |
981 | print_command_lines (uiout, list->body_list[1], depth + 1); | |
982 | } | |
983 | ||
984 | ui_out_field_string (uiout, NULL, "end"); | |
985 | if (depth) | |
986 | ui_out_spaces (uiout, 2 * depth); | |
987 | ui_out_text (uiout, "end\n"); | |
988 | list = list->next; | |
989 | continue; | |
990 | } | |
991 | ||
992 | /* ignore illegal command type and try next */ | |
993 | list = list->next; | |
994 | } /* while (list) */ | |
995 | } | |
996 | #else | |
c906108c | 997 | void |
9e086581 | 998 | print_command_line (cmd, depth, stream) |
c906108c SS |
999 | struct command_line *cmd; |
1000 | unsigned int depth; | |
d9fcf2fb | 1001 | struct ui_file *stream; |
c906108c SS |
1002 | { |
1003 | unsigned int i; | |
1004 | ||
1005 | if (depth) | |
1006 | { | |
1007 | for (i = 0; i < depth; i++) | |
9e086581 | 1008 | fputs_filtered (" ", stream); |
c906108c SS |
1009 | } |
1010 | ||
1011 | /* A simple command, print it and return. */ | |
1012 | if (cmd->control_type == simple_control) | |
1013 | { | |
9e086581 JM |
1014 | fputs_filtered (cmd->line, stream); |
1015 | fputs_filtered ("\n", stream); | |
c906108c SS |
1016 | return; |
1017 | } | |
1018 | ||
1019 | /* loop_continue to jump to the start of a while loop, print it | |
1020 | and return. */ | |
1021 | if (cmd->control_type == continue_control) | |
1022 | { | |
9e086581 | 1023 | fputs_filtered ("loop_continue\n", stream); |
c906108c SS |
1024 | return; |
1025 | } | |
1026 | ||
1027 | /* loop_break to break out of a while loop, print it and return. */ | |
1028 | if (cmd->control_type == break_control) | |
1029 | { | |
9e086581 | 1030 | fputs_filtered ("loop_break\n", stream); |
c906108c SS |
1031 | return; |
1032 | } | |
1033 | ||
1034 | /* A while command. Recursively print its subcommands before returning. */ | |
1035 | if (cmd->control_type == while_control) | |
1036 | { | |
1037 | struct command_line *list; | |
9e086581 JM |
1038 | fputs_filtered ("while ", stream); |
1039 | fputs_filtered (cmd->line, stream); | |
1040 | fputs_filtered ("\n", stream); | |
c906108c SS |
1041 | list = *cmd->body_list; |
1042 | while (list) | |
1043 | { | |
9e086581 | 1044 | print_command_line (list, depth + 1, stream); |
c906108c SS |
1045 | list = list->next; |
1046 | } | |
1047 | } | |
1048 | ||
1049 | /* An if command. Recursively print both arms before returning. */ | |
1050 | if (cmd->control_type == if_control) | |
1051 | { | |
9e086581 JM |
1052 | fputs_filtered ("if ", stream); |
1053 | fputs_filtered (cmd->line, stream); | |
1054 | fputs_filtered ("\n", stream); | |
c906108c | 1055 | /* The true arm. */ |
9e086581 | 1056 | print_command_line (cmd->body_list[0], depth + 1, stream); |
c906108c SS |
1057 | |
1058 | /* Show the false arm if it exists. */ | |
1059 | if (cmd->body_count == 2) | |
c5aa993b JM |
1060 | { |
1061 | if (depth) | |
1062 | { | |
1063 | for (i = 0; i < depth; i++) | |
1064 | fputs_filtered (" ", stream); | |
1065 | } | |
1066 | fputs_filtered ("else\n", stream); | |
1067 | print_command_line (cmd->body_list[1], depth + 1, stream); | |
1068 | } | |
c906108c SS |
1069 | if (depth) |
1070 | { | |
1071 | for (i = 0; i < depth; i++) | |
9e086581 | 1072 | fputs_filtered (" ", stream); |
c906108c | 1073 | } |
9e086581 | 1074 | fputs_filtered ("end\n", stream); |
c906108c SS |
1075 | } |
1076 | } | |
8b93c638 | 1077 | #endif |
c906108c SS |
1078 | |
1079 | /* Execute the command in CMD. */ | |
1080 | ||
1081 | enum command_control_type | |
1082 | execute_control_command (cmd) | |
1083 | struct command_line *cmd; | |
1084 | { | |
1085 | struct expression *expr; | |
1086 | struct command_line *current; | |
1087 | struct cleanup *old_chain = 0; | |
1088 | value_ptr val; | |
1089 | value_ptr val_mark; | |
1090 | int loop; | |
1091 | enum command_control_type ret; | |
1092 | char *new_line; | |
1093 | ||
1094 | switch (cmd->control_type) | |
1095 | { | |
1096 | case simple_control: | |
1097 | /* A simple command, execute it and return. */ | |
1098 | new_line = insert_args (cmd->line); | |
1099 | if (!new_line) | |
1100 | return invalid_control; | |
c13c43fd | 1101 | old_chain = make_cleanup (free_current_contents, &new_line); |
c906108c SS |
1102 | execute_command (new_line, 0); |
1103 | ret = cmd->control_type; | |
1104 | break; | |
1105 | ||
1106 | case continue_control: | |
1107 | case break_control: | |
1108 | /* Return for "continue", and "break" so we can either | |
c5aa993b | 1109 | continue the loop at the top, or break out. */ |
c906108c SS |
1110 | ret = cmd->control_type; |
1111 | break; | |
1112 | ||
1113 | case while_control: | |
1114 | { | |
1115 | /* Parse the loop control expression for the while statement. */ | |
1116 | new_line = insert_args (cmd->line); | |
1117 | if (!new_line) | |
1118 | return invalid_control; | |
c13c43fd | 1119 | old_chain = make_cleanup (free_current_contents, &new_line); |
c906108c | 1120 | expr = parse_expression (new_line); |
c13c43fd | 1121 | make_cleanup (free_current_contents, &expr); |
c5aa993b | 1122 | |
c906108c SS |
1123 | ret = simple_control; |
1124 | loop = 1; | |
1125 | ||
1126 | /* Keep iterating so long as the expression is true. */ | |
1127 | while (loop == 1) | |
1128 | { | |
1129 | int cond_result; | |
1130 | ||
1131 | QUIT; | |
1132 | ||
1133 | /* Evaluate the expression. */ | |
1134 | val_mark = value_mark (); | |
1135 | val = evaluate_expression (expr); | |
1136 | cond_result = value_true (val); | |
1137 | value_free_to_mark (val_mark); | |
1138 | ||
1139 | /* If the value is false, then break out of the loop. */ | |
1140 | if (!cond_result) | |
1141 | break; | |
1142 | ||
1143 | /* Execute the body of the while statement. */ | |
1144 | current = *cmd->body_list; | |
1145 | while (current) | |
1146 | { | |
1147 | ret = execute_control_command (current); | |
1148 | ||
1149 | /* If we got an error, or a "break" command, then stop | |
1150 | looping. */ | |
1151 | if (ret == invalid_control || ret == break_control) | |
1152 | { | |
1153 | loop = 0; | |
1154 | break; | |
1155 | } | |
1156 | ||
1157 | /* If we got a "continue" command, then restart the loop | |
1158 | at this point. */ | |
1159 | if (ret == continue_control) | |
1160 | break; | |
c5aa993b | 1161 | |
c906108c | 1162 | /* Get the next statement. */ |
c5aa993b | 1163 | current = current->next; |
c906108c SS |
1164 | } |
1165 | } | |
1166 | ||
1167 | /* Reset RET so that we don't recurse the break all the way down. */ | |
1168 | if (ret == break_control) | |
1169 | ret = simple_control; | |
1170 | ||
1171 | break; | |
1172 | } | |
1173 | ||
1174 | case if_control: | |
1175 | { | |
1176 | new_line = insert_args (cmd->line); | |
1177 | if (!new_line) | |
1178 | return invalid_control; | |
c13c43fd | 1179 | old_chain = make_cleanup (free_current_contents, &new_line); |
c906108c SS |
1180 | /* Parse the conditional for the if statement. */ |
1181 | expr = parse_expression (new_line); | |
c13c43fd | 1182 | make_cleanup (free_current_contents, &expr); |
c906108c SS |
1183 | |
1184 | current = NULL; | |
1185 | ret = simple_control; | |
1186 | ||
1187 | /* Evaluate the conditional. */ | |
1188 | val_mark = value_mark (); | |
1189 | val = evaluate_expression (expr); | |
1190 | ||
1191 | /* Choose which arm to take commands from based on the value of the | |
1192 | conditional expression. */ | |
1193 | if (value_true (val)) | |
1194 | current = *cmd->body_list; | |
1195 | else if (cmd->body_count == 2) | |
1196 | current = *(cmd->body_list + 1); | |
1197 | value_free_to_mark (val_mark); | |
1198 | ||
1199 | /* Execute commands in the given arm. */ | |
1200 | while (current) | |
1201 | { | |
1202 | ret = execute_control_command (current); | |
1203 | ||
1204 | /* If we got an error, get out. */ | |
1205 | if (ret != simple_control) | |
1206 | break; | |
1207 | ||
1208 | /* Get the next statement in the body. */ | |
1209 | current = current->next; | |
1210 | } | |
1211 | ||
1212 | break; | |
1213 | } | |
1214 | ||
1215 | default: | |
1216 | warning ("Invalid control type in command structure."); | |
1217 | return invalid_control; | |
1218 | } | |
1219 | ||
1220 | if (old_chain) | |
1221 | do_cleanups (old_chain); | |
1222 | ||
1223 | return ret; | |
1224 | } | |
1225 | ||
1226 | /* "while" command support. Executes a body of statements while the | |
1227 | loop condition is nonzero. */ | |
1228 | ||
1229 | static void | |
1230 | while_command (arg, from_tty) | |
1231 | char *arg; | |
1232 | int from_tty; | |
1233 | { | |
1234 | struct command_line *command = NULL; | |
1235 | ||
1236 | control_level = 1; | |
1237 | command = get_command_line (while_control, arg); | |
1238 | ||
1239 | if (command == NULL) | |
1240 | return; | |
1241 | ||
1242 | execute_control_command (command); | |
1243 | free_command_lines (&command); | |
1244 | } | |
1245 | ||
1246 | /* "if" command support. Execute either the true or false arm depending | |
1247 | on the value of the if conditional. */ | |
1248 | ||
1249 | static void | |
1250 | if_command (arg, from_tty) | |
1251 | char *arg; | |
1252 | int from_tty; | |
1253 | { | |
1254 | struct command_line *command = NULL; | |
1255 | ||
1256 | control_level = 1; | |
1257 | command = get_command_line (if_control, arg); | |
1258 | ||
1259 | if (command == NULL) | |
1260 | return; | |
1261 | ||
1262 | execute_control_command (command); | |
1263 | free_command_lines (&command); | |
1264 | } | |
1265 | ||
1266 | /* Cleanup */ | |
1267 | static void | |
e41a3b1a | 1268 | arg_cleanup (void *ignore) |
c906108c SS |
1269 | { |
1270 | struct user_args *oargs = user_args; | |
1271 | if (!user_args) | |
96baa820 | 1272 | internal_error ("Internal error, arg_cleanup called with no user args.\n"); |
c906108c SS |
1273 | |
1274 | user_args = user_args->next; | |
1275 | free (oargs); | |
1276 | } | |
1277 | ||
1278 | /* Bind the incomming arguments for a user defined command to | |
1279 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
1280 | ||
1281 | static struct cleanup * | |
1282 | setup_user_args (p) | |
1283 | char *p; | |
1284 | { | |
1285 | struct user_args *args; | |
1286 | struct cleanup *old_chain; | |
1287 | unsigned int arg_count = 0; | |
1288 | ||
c5aa993b | 1289 | args = (struct user_args *) xmalloc (sizeof (struct user_args)); |
c906108c SS |
1290 | memset (args, 0, sizeof (struct user_args)); |
1291 | ||
1292 | args->next = user_args; | |
1293 | user_args = args; | |
1294 | ||
e41a3b1a | 1295 | old_chain = make_cleanup (arg_cleanup, 0/*ignored*/); |
c906108c SS |
1296 | |
1297 | if (p == NULL) | |
1298 | return old_chain; | |
1299 | ||
1300 | while (*p) | |
1301 | { | |
1302 | char *start_arg; | |
1303 | int squote = 0; | |
1304 | int dquote = 0; | |
1305 | int bsquote = 0; | |
1306 | ||
1307 | if (arg_count >= MAXUSERARGS) | |
1308 | { | |
1309 | error ("user defined function may only have %d arguments.\n", | |
1310 | MAXUSERARGS); | |
1311 | return old_chain; | |
1312 | } | |
1313 | ||
1314 | /* Strip whitespace. */ | |
1315 | while (*p == ' ' || *p == '\t') | |
1316 | p++; | |
1317 | ||
1318 | /* P now points to an argument. */ | |
1319 | start_arg = p; | |
1320 | user_args->a[arg_count].arg = p; | |
1321 | ||
1322 | /* Get to the end of this argument. */ | |
1323 | while (*p) | |
1324 | { | |
1325 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
1326 | break; | |
1327 | else | |
1328 | { | |
1329 | if (bsquote) | |
1330 | bsquote = 0; | |
1331 | else if (*p == '\\') | |
1332 | bsquote = 1; | |
1333 | else if (squote) | |
1334 | { | |
1335 | if (*p == '\'') | |
1336 | squote = 0; | |
1337 | } | |
1338 | else if (dquote) | |
1339 | { | |
1340 | if (*p == '"') | |
1341 | dquote = 0; | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | if (*p == '\'') | |
1346 | squote = 1; | |
1347 | else if (*p == '"') | |
1348 | dquote = 1; | |
1349 | } | |
1350 | p++; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | user_args->a[arg_count].len = p - start_arg; | |
1355 | arg_count++; | |
1356 | user_args->count++; | |
1357 | } | |
1358 | return old_chain; | |
1359 | } | |
1360 | ||
1361 | /* Given character string P, return a point to the first argument ($arg), | |
1362 | or NULL if P contains no arguments. */ | |
1363 | ||
1364 | static char * | |
1365 | locate_arg (p) | |
1366 | char *p; | |
1367 | { | |
1368 | while ((p = strchr (p, '$'))) | |
1369 | { | |
1370 | if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4])) | |
1371 | return p; | |
1372 | p++; | |
1373 | } | |
1374 | return NULL; | |
1375 | } | |
1376 | ||
1377 | /* Insert the user defined arguments stored in user_arg into the $arg | |
1378 | arguments found in line, with the updated copy being placed into nline. */ | |
1379 | ||
1380 | static char * | |
1381 | insert_args (line) | |
1382 | char *line; | |
1383 | { | |
1384 | char *p, *save_line, *new_line; | |
1385 | unsigned len, i; | |
1386 | ||
1387 | /* First we need to know how much memory to allocate for the new line. */ | |
1388 | save_line = line; | |
1389 | len = 0; | |
1390 | while ((p = locate_arg (line))) | |
1391 | { | |
1392 | len += p - line; | |
1393 | i = p[4] - '0'; | |
c5aa993b | 1394 | |
c906108c SS |
1395 | if (i >= user_args->count) |
1396 | { | |
1397 | error ("Missing argument %d in user function.\n", i); | |
1398 | return NULL; | |
1399 | } | |
1400 | len += user_args->a[i].len; | |
1401 | line = p + 5; | |
1402 | } | |
1403 | ||
1404 | /* Don't forget the tail. */ | |
1405 | len += strlen (line); | |
1406 | ||
1407 | /* Allocate space for the new line and fill it in. */ | |
c5aa993b | 1408 | new_line = (char *) xmalloc (len + 1); |
c906108c SS |
1409 | if (new_line == NULL) |
1410 | return NULL; | |
1411 | ||
1412 | /* Restore pointer to beginning of old line. */ | |
1413 | line = save_line; | |
1414 | ||
1415 | /* Save pointer to beginning of new line. */ | |
1416 | save_line = new_line; | |
1417 | ||
1418 | while ((p = locate_arg (line))) | |
1419 | { | |
1420 | int i, len; | |
1421 | ||
1422 | memcpy (new_line, line, p - line); | |
1423 | new_line += p - line; | |
1424 | i = p[4] - '0'; | |
1425 | ||
1426 | len = user_args->a[i].len; | |
1427 | if (len) | |
1428 | { | |
1429 | memcpy (new_line, user_args->a[i].arg, len); | |
1430 | new_line += len; | |
1431 | } | |
1432 | line = p + 5; | |
1433 | } | |
1434 | /* Don't forget the tail. */ | |
1435 | strcpy (new_line, line); | |
1436 | ||
1437 | /* Return a pointer to the beginning of the new line. */ | |
1438 | return save_line; | |
1439 | } | |
1440 | ||
1441 | void | |
1442 | execute_user_command (c, args) | |
1443 | struct cmd_list_element *c; | |
1444 | char *args; | |
1445 | { | |
1446 | register struct command_line *cmdlines; | |
1447 | struct cleanup *old_chain; | |
1448 | enum command_control_type ret; | |
1449 | ||
1450 | old_chain = setup_user_args (args); | |
1451 | ||
1452 | cmdlines = c->user_commands; | |
1453 | if (cmdlines == 0) | |
1454 | /* Null command */ | |
1455 | return; | |
1456 | ||
1457 | /* Set the instream to 0, indicating execution of a | |
1458 | user-defined function. */ | |
e41a3b1a | 1459 | old_chain = make_cleanup (do_restore_instream_cleanup, instream); |
c906108c SS |
1460 | instream = (FILE *) 0; |
1461 | while (cmdlines) | |
1462 | { | |
1463 | ret = execute_control_command (cmdlines); | |
1464 | if (ret != simple_control && ret != break_control) | |
1465 | { | |
1466 | warning ("Error in control structure.\n"); | |
1467 | break; | |
1468 | } | |
1469 | cmdlines = cmdlines->next; | |
1470 | } | |
1471 | do_cleanups (old_chain); | |
1472 | } | |
1473 | ||
1474 | /* Execute the line P as a command. | |
1475 | Pass FROM_TTY as second argument to the defining function. */ | |
1476 | ||
1477 | void | |
1478 | execute_command (p, from_tty) | |
1479 | char *p; | |
1480 | int from_tty; | |
1481 | { | |
1482 | register struct cmd_list_element *c; | |
1483 | register enum language flang; | |
1484 | static int warned = 0; | |
56382845 | 1485 | char *line; |
c906108c | 1486 | /* FIXME: These should really be in an appropriate header file */ |
a14ed312 | 1487 | extern void serial_log_command (const char *); |
c906108c SS |
1488 | |
1489 | free_all_values (); | |
1490 | ||
1491 | /* Force cleanup of any alloca areas if using C alloca instead of | |
1492 | a builtin alloca. */ | |
1493 | alloca (0); | |
1494 | ||
1495 | /* This can happen when command_line_input hits end of file. */ | |
1496 | if (p == NULL) | |
c5aa993b | 1497 | return; |
c906108c SS |
1498 | |
1499 | serial_log_command (p); | |
1500 | ||
c5aa993b JM |
1501 | while (*p == ' ' || *p == '\t') |
1502 | p++; | |
c906108c SS |
1503 | if (*p) |
1504 | { | |
1505 | char *arg; | |
56382845 | 1506 | line = p; |
eb2f494a | 1507 | |
c906108c | 1508 | c = lookup_cmd (&p, cmdlist, "", 0, 1); |
43ff13b4 JM |
1509 | |
1510 | /* If the target is running, we allow only a limited set of | |
1511 | commands. */ | |
6426a772 | 1512 | if (event_loop_p && target_can_async_p () && target_executing) |
43ff13b4 JM |
1513 | if (!strcmp (c->name, "help") |
1514 | && !strcmp (c->name, "pwd") | |
1515 | && !strcmp (c->name, "show") | |
1516 | && !strcmp (c->name, "stop")) | |
1517 | error ("Cannot execute this command while the target is running."); | |
1518 | ||
c906108c SS |
1519 | /* Pass null arg rather than an empty one. */ |
1520 | arg = *p ? p : 0; | |
1521 | ||
1522 | /* Clear off trailing whitespace, except for set and complete command. */ | |
1523 | if (arg && c->type != set_cmd && c->function.cfunc != complete_command) | |
1524 | { | |
1525 | p = arg + strlen (arg) - 1; | |
1526 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
1527 | p--; | |
1528 | *(p + 1) = '\0'; | |
1529 | } | |
eb2f494a | 1530 | |
c906108c SS |
1531 | /* If this command has been hooked, run the hook first. */ |
1532 | if (c->hook) | |
c5aa993b | 1533 | execute_user_command (c->hook, (char *) 0); |
c906108c | 1534 | |
56382845 | 1535 | if (c->flags & DEPRECATED_WARN_USER) |
eb2f494a | 1536 | deprecated_cmd_warning (&line); |
56382845 | 1537 | |
c906108c SS |
1538 | if (c->class == class_user) |
1539 | execute_user_command (c, arg); | |
1540 | else if (c->type == set_cmd || c->type == show_cmd) | |
1541 | do_setshow_command (arg, from_tty & caution, c); | |
1542 | else if (c->function.cfunc == NO_FUNCTION) | |
1543 | error ("That is not a command, just a help topic."); | |
1544 | else if (call_command_hook) | |
1545 | call_command_hook (c, arg, from_tty & caution); | |
1546 | else | |
1547 | (*c->function.cfunc) (arg, from_tty & caution); | |
c5aa993b | 1548 | } |
c906108c SS |
1549 | |
1550 | /* Tell the user if the language has changed (except first time). */ | |
1551 | if (current_language != expected_language) | |
c5aa993b JM |
1552 | { |
1553 | if (language_mode == language_mode_auto) | |
1554 | { | |
1555 | language_info (1); /* Print what changed. */ | |
1556 | } | |
1557 | warned = 0; | |
c906108c | 1558 | } |
c906108c SS |
1559 | |
1560 | /* Warn the user if the working language does not match the | |
1561 | language of the current frame. Only warn the user if we are | |
1562 | actually running the program, i.e. there is a stack. */ | |
1563 | /* FIXME: This should be cacheing the frame and only running when | |
1564 | the frame changes. */ | |
1565 | ||
1566 | if (target_has_stack) | |
1567 | { | |
1568 | flang = get_frame_language (); | |
1569 | if (!warned | |
1570 | && flang != language_unknown | |
1571 | && flang != current_language->la_language) | |
1572 | { | |
1573 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1574 | warned = 1; | |
1575 | } | |
1576 | } | |
1577 | } | |
1578 | ||
c906108c SS |
1579 | /* Read commands from `instream' and execute them |
1580 | until end of file or error reading instream. */ | |
1581 | ||
1582 | void | |
1583 | command_loop () | |
1584 | { | |
1585 | struct cleanup *old_chain; | |
1586 | char *command; | |
1587 | int stdin_is_tty = ISATTY (stdin); | |
1588 | long time_at_cmd_start; | |
1589 | #ifdef HAVE_SBRK | |
1590 | long space_at_cmd_start = 0; | |
1591 | #endif | |
1592 | extern int display_time; | |
1593 | extern int display_space; | |
1594 | ||
1595 | while (instream && !feof (instream)) | |
1596 | { | |
1597 | #if defined(TUI) | |
1598 | extern int insert_mode; | |
1599 | #endif | |
1600 | if (window_hook && instream == stdin) | |
0f71a2f6 | 1601 | (*window_hook) (instream, get_prompt ()); |
c906108c SS |
1602 | |
1603 | quit_flag = 0; | |
1604 | if (instream == stdin && stdin_is_tty) | |
1605 | reinitialize_more_filter (); | |
e2273c6d | 1606 | old_chain = make_cleanup (null_cleanup, 0); |
c906108c SS |
1607 | |
1608 | #if defined(TUI) | |
1609 | /* A bit of paranoia: I want to make sure the "insert_mode" global | |
1610 | * is clear except when it is being used for command-line editing | |
1611 | * (see tuiIO.c, utils.c); otherwise normal output will | |
1612 | * get messed up in the TUI. So clear it before/after | |
1613 | * the command-line-input call. - RT | |
1614 | */ | |
1615 | insert_mode = 0; | |
1616 | #endif | |
1617 | /* Get a command-line. This calls the readline package. */ | |
c5aa993b | 1618 | command = command_line_input (instream == stdin ? |
0f71a2f6 | 1619 | get_prompt () : (char *) NULL, |
c906108c SS |
1620 | instream == stdin, "prompt"); |
1621 | #if defined(TUI) | |
1622 | insert_mode = 0; | |
1623 | #endif | |
1624 | if (command == 0) | |
1625 | return; | |
1626 | ||
1627 | time_at_cmd_start = get_run_time (); | |
1628 | ||
1629 | if (display_space) | |
1630 | { | |
1631 | #ifdef HAVE_SBRK | |
1632 | extern char **environ; | |
1633 | char *lim = (char *) sbrk (0); | |
1634 | ||
1635 | space_at_cmd_start = (long) (lim - (char *) &environ); | |
1636 | #endif | |
1637 | } | |
1638 | ||
1639 | execute_command (command, instream == stdin); | |
1640 | /* Do any commands attached to breakpoint we stopped at. */ | |
1641 | bpstat_do_actions (&stop_bpstat); | |
1642 | do_cleanups (old_chain); | |
1643 | ||
1644 | if (display_time) | |
1645 | { | |
1646 | long cmd_time = get_run_time () - time_at_cmd_start; | |
1647 | ||
1648 | printf_unfiltered ("Command execution time: %ld.%06ld\n", | |
1649 | cmd_time / 1000000, cmd_time % 1000000); | |
1650 | } | |
1651 | ||
1652 | if (display_space) | |
1653 | { | |
1654 | #ifdef HAVE_SBRK | |
1655 | extern char **environ; | |
1656 | char *lim = (char *) sbrk (0); | |
1657 | long space_now = lim - (char *) &environ; | |
1658 | long space_diff = space_now - space_at_cmd_start; | |
1659 | ||
1660 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", | |
1661 | space_now, | |
1662 | (space_diff >= 0 ? '+' : '-'), | |
1663 | space_diff); | |
1664 | #endif | |
1665 | } | |
1666 | } | |
1667 | } | |
392a587b | 1668 | |
8b93c638 JM |
1669 | /* Read commands from `instream' and execute them until end of file or |
1670 | error reading instream. This command loop doesnt care about any | |
1671 | such things as displaying time and space usage. If the user asks | |
1672 | for those, they won't work. */ | |
1673 | void | |
1674 | simplified_command_loop (read_input_func, execute_command_func) | |
1675 | char *(*read_input_func) (char *); | |
1676 | void (*execute_command_func) (char *, int); | |
1677 | { | |
1678 | struct cleanup *old_chain; | |
1679 | char *command; | |
1680 | int stdin_is_tty = ISATTY (stdin); | |
1681 | ||
1682 | while (instream && !feof (instream)) | |
1683 | { | |
1684 | quit_flag = 0; | |
1685 | if (instream == stdin && stdin_is_tty) | |
1686 | reinitialize_more_filter (); | |
e2273c6d | 1687 | old_chain = make_cleanup (null_cleanup, 0); |
8b93c638 JM |
1688 | |
1689 | /* Get a command-line. */ | |
1690 | command = (*read_input_func) (instream == stdin ? | |
1691 | get_prompt () : (char *) NULL); | |
1692 | ||
1693 | if (command == 0) | |
1694 | return; | |
1695 | ||
1696 | (*execute_command_func) (command, instream == stdin); | |
1697 | ||
1698 | /* Do any commands attached to breakpoint we stopped at. */ | |
1699 | bpstat_do_actions (&stop_bpstat); | |
1700 | ||
1701 | do_cleanups (old_chain); | |
1702 | } | |
1703 | } | |
9e0b60a8 JM |
1704 | \f |
1705 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1706 | ||
1707 | void | |
1708 | dont_repeat () | |
1709 | { | |
1710 | if (server_command) | |
1711 | return; | |
1712 | ||
1713 | /* If we aren't reading from standard input, we are saving the last | |
1714 | thing read from stdin in line and don't want to delete it. Null lines | |
1715 | won't repeat here in any case. */ | |
1716 | if (instream == stdin) | |
1717 | *line = 0; | |
1718 | } | |
1719 | \f | |
1720 | /* Read a line from the stream "instream" without command line editing. | |
1721 | ||
1722 | It prints PROMPT_ARG once at the start. | |
1723 | Action is compatible with "readline", e.g. space for the result is | |
1724 | malloc'd and should be freed by the caller. | |
1725 | ||
1726 | A NULL return means end of file. */ | |
1727 | char * | |
1728 | gdb_readline (prompt_arg) | |
1729 | char *prompt_arg; | |
1730 | { | |
1731 | int c; | |
1732 | char *result; | |
1733 | int input_index = 0; | |
1734 | int result_size = 80; | |
1735 | ||
1736 | if (prompt_arg) | |
1737 | { | |
1738 | /* Don't use a _filtered function here. It causes the assumed | |
c5aa993b JM |
1739 | character position to be off, since the newline we read from |
1740 | the user is not accounted for. */ | |
9e0b60a8 JM |
1741 | fputs_unfiltered (prompt_arg, gdb_stdout); |
1742 | #ifdef MPW | |
1743 | /* Move to a new line so the entered line doesn't have a prompt | |
c5aa993b | 1744 | on the front of it. */ |
9e0b60a8 JM |
1745 | fputs_unfiltered ("\n", gdb_stdout); |
1746 | #endif /* MPW */ | |
1747 | gdb_flush (gdb_stdout); | |
1748 | } | |
1749 | ||
1750 | result = (char *) xmalloc (result_size); | |
1751 | ||
1752 | while (1) | |
1753 | { | |
1754 | /* Read from stdin if we are executing a user defined command. | |
c5aa993b | 1755 | This is the right thing for prompt_for_continue, at least. */ |
9e0b60a8 JM |
1756 | c = fgetc (instream ? instream : stdin); |
1757 | ||
1758 | if (c == EOF) | |
1759 | { | |
1760 | if (input_index > 0) | |
1761 | /* The last line does not end with a newline. Return it, and | |
1762 | if we are called again fgetc will still return EOF and | |
1763 | we'll return NULL then. */ | |
1764 | break; | |
1765 | free (result); | |
1766 | return NULL; | |
1767 | } | |
1768 | ||
1769 | if (c == '\n') | |
1770 | #ifndef CRLF_SOURCE_FILES | |
1771 | break; | |
1772 | #else | |
1773 | { | |
1774 | if (input_index > 0 && result[input_index - 1] == '\r') | |
1775 | input_index--; | |
1776 | break; | |
1777 | } | |
1778 | #endif | |
1779 | ||
1780 | result[input_index++] = c; | |
1781 | while (input_index >= result_size) | |
1782 | { | |
1783 | result_size *= 2; | |
1784 | result = (char *) xrealloc (result, result_size); | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | result[input_index++] = '\0'; | |
1789 | return result; | |
1790 | } | |
1791 | ||
1792 | /* Variables which control command line editing and history | |
1793 | substitution. These variables are given default values at the end | |
1794 | of this file. */ | |
1795 | static int command_editing_p; | |
1796 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
1797 | gdb to use the event loop as the default command loop and we merge | |
1798 | event-top.c into this file, top.c */ | |
1799 | /* static */ int history_expansion_p; | |
1800 | static int write_history_p; | |
1801 | static int history_size; | |
1802 | static char *history_filename; | |
1803 | ||
1804 | /* readline uses the word breaks for two things: | |
1805 | (1) In figuring out where to point the TEXT parameter to the | |
1806 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1807 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1808 | it does affect how much stuff M-? lists. | |
1809 | (2) If one of the matches contains a word break character, readline | |
1810 | will quote it. That's why we switch between | |
1811 | gdb_completer_word_break_characters and | |
1812 | gdb_completer_command_word_break_characters. I'm not sure when | |
1813 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1814 | ||
1815 | /* Variables which are necessary for fancy command line editing. */ | |
1816 | char *gdb_completer_word_break_characters = | |
c5aa993b | 1817 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
9e0b60a8 JM |
1818 | |
1819 | /* When completing on command names, we remove '-' from the list of | |
1820 | word break characters, since we use it in command names. If the | |
1821 | readline library sees one in any of the current completion strings, | |
1822 | it thinks that the string needs to be quoted and automatically supplies | |
1823 | a leading quote. */ | |
1824 | char *gdb_completer_command_word_break_characters = | |
c5aa993b | 1825 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; |
9e0b60a8 | 1826 | |
ae678129 EZ |
1827 | /* When completing on file names, we remove from the list of word |
1828 | break characters any characters that are commonly used in file | |
1829 | names, such as '-', '+', '~', etc. Otherwise, readline displays | |
1830 | incorrect completion candidates. */ | |
1831 | char *gdb_completer_file_name_break_characters = " \t\n*|\"';:?/><"; | |
1832 | ||
9e0b60a8 JM |
1833 | /* Characters that can be used to quote completion strings. Note that we |
1834 | can't include '"' because the gdb C parser treats such quoted sequences | |
1835 | as strings. */ | |
1836 | char *gdb_completer_quote_characters = | |
c5aa993b | 1837 | "'"; |
9e0b60a8 JM |
1838 | |
1839 | /* Functions that are used as part of the fancy command line editing. */ | |
1840 | ||
1841 | /* This can be used for functions which don't want to complete on symbols | |
1842 | but don't want to complete on anything else either. */ | |
1843 | /* ARGSUSED */ | |
1844 | char ** | |
1845 | noop_completer (text, prefix) | |
1846 | char *text; | |
1847 | char *prefix; | |
1848 | { | |
1849 | return NULL; | |
1850 | } | |
1851 | ||
1852 | /* Complete on filenames. */ | |
1853 | char ** | |
1854 | filename_completer (text, word) | |
1855 | char *text; | |
1856 | char *word; | |
1857 | { | |
1858 | /* From readline. */ | |
a14ed312 | 1859 | extern char *filename_completion_function (char *, int); |
9e0b60a8 JM |
1860 | int subsequent_name; |
1861 | char **return_val; | |
1862 | int return_val_used; | |
1863 | int return_val_alloced; | |
1864 | ||
1865 | return_val_used = 0; | |
1866 | /* Small for testing. */ | |
1867 | return_val_alloced = 1; | |
1868 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1869 | ||
1870 | subsequent_name = 0; | |
1871 | while (1) | |
1872 | { | |
1873 | char *p; | |
1874 | p = filename_completion_function (text, subsequent_name); | |
1875 | if (return_val_used >= return_val_alloced) | |
1876 | { | |
1877 | return_val_alloced *= 2; | |
1878 | return_val = | |
1879 | (char **) xrealloc (return_val, | |
1880 | return_val_alloced * sizeof (char *)); | |
1881 | } | |
1882 | if (p == NULL) | |
1883 | { | |
1884 | return_val[return_val_used++] = p; | |
1885 | break; | |
1886 | } | |
bcea15ac EZ |
1887 | /* We need to set subsequent_name to a non-zero value before the |
1888 | continue line below, because otherwise, if the first file seen | |
1889 | by GDB is a backup file whose name ends in a `~', we will loop | |
1890 | indefinitely. */ | |
1891 | subsequent_name = 1; | |
9e0b60a8 | 1892 | /* Like emacs, don't complete on old versions. Especially useful |
c5aa993b | 1893 | in the "source" command. */ |
9e0b60a8 JM |
1894 | if (p[strlen (p) - 1] == '~') |
1895 | continue; | |
1896 | ||
1897 | { | |
1898 | char *q; | |
1899 | if (word == text) | |
1900 | /* Return exactly p. */ | |
1901 | return_val[return_val_used++] = p; | |
1902 | else if (word > text) | |
1903 | { | |
1904 | /* Return some portion of p. */ | |
1905 | q = xmalloc (strlen (p) + 5); | |
1906 | strcpy (q, p + (word - text)); | |
1907 | return_val[return_val_used++] = q; | |
1908 | free (p); | |
1909 | } | |
1910 | else | |
1911 | { | |
1912 | /* Return some of TEXT plus p. */ | |
1913 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1914 | strncpy (q, word, text - word); | |
1915 | q[text - word] = '\0'; | |
1916 | strcat (q, p); | |
1917 | return_val[return_val_used++] = q; | |
1918 | free (p); | |
1919 | } | |
1920 | } | |
9e0b60a8 JM |
1921 | } |
1922 | #if 0 | |
1923 | /* There is no way to do this just long enough to affect quote inserting | |
1924 | without also affecting the next completion. This should be fixed in | |
1925 | readline. FIXME. */ | |
1926 | /* Insure that readline does the right thing | |
1927 | with respect to inserting quotes. */ | |
1928 | rl_completer_word_break_characters = ""; | |
1929 | #endif | |
1930 | return return_val; | |
1931 | } | |
1932 | ||
1933 | /* Here are some useful test cases for completion. FIXME: These should | |
1934 | be put in the test suite. They should be tested with both M-? and TAB. | |
1935 | ||
1936 | "show output-" "radix" | |
1937 | "show output" "-radix" | |
1938 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1939 | "p " ambiguous (all symbols) | |
1940 | "info t foo" no completions | |
1941 | "info t " no completions | |
1942 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1943 | "info ajksdlfk" no completions | |
1944 | "info ajksdlfk " no completions | |
1945 | "info" " " | |
1946 | "info " ambiguous (all info commands) | |
1947 | "p \"a" no completions (string constant) | |
1948 | "p 'a" ambiguous (all symbols starting with a) | |
1949 | "p b-a" ambiguous (all symbols starting with a) | |
1950 | "p b-" ambiguous (all symbols) | |
1951 | "file Make" "file" (word break hard to screw up here) | |
1952 | "file ../gdb.stabs/we" "ird" (needs to not break word at slash) | |
c5aa993b | 1953 | */ |
9e0b60a8 JM |
1954 | |
1955 | /* Generate completions one by one for the completer. Each time we are | |
1956 | called return another potential completion to the caller. | |
1957 | line_completion just completes on commands or passes the buck to the | |
1958 | command's completer function, the stuff specific to symbol completion | |
1959 | is in make_symbol_completion_list. | |
1960 | ||
1961 | TEXT is the caller's idea of the "word" we are looking at. | |
1962 | ||
1963 | MATCHES is the number of matches that have currently been collected from | |
1964 | calling this completion function. When zero, then we need to initialize, | |
1965 | otherwise the initialization has already taken place and we can just | |
1966 | return the next potential completion string. | |
1967 | ||
1968 | LINE_BUFFER is available to be looked at; it contains the entire text | |
1969 | of the line. POINT is the offset in that line of the cursor. You | |
1970 | should pretend that the line ends at POINT. | |
1971 | ||
1972 | Returns NULL if there are no more completions, else a pointer to a string | |
1973 | which is a possible completion, it is the caller's responsibility to | |
1974 | free the string. */ | |
1975 | ||
1976 | static char * | |
1977 | line_completion_function (text, matches, line_buffer, point) | |
1978 | char *text; | |
1979 | int matches; | |
1980 | char *line_buffer; | |
1981 | int point; | |
1982 | { | |
c5aa993b JM |
1983 | static char **list = (char **) NULL; /* Cache of completions */ |
1984 | static int index; /* Next cached completion */ | |
9e0b60a8 JM |
1985 | char *output = NULL; |
1986 | char *tmp_command, *p; | |
1987 | /* Pointer within tmp_command which corresponds to text. */ | |
1988 | char *word; | |
1989 | struct cmd_list_element *c, *result_list; | |
1990 | ||
1991 | if (matches == 0) | |
1992 | { | |
1993 | /* The caller is beginning to accumulate a new set of completions, so | |
c5aa993b JM |
1994 | we need to find all of them now, and cache them for returning one at |
1995 | a time on future calls. */ | |
9e0b60a8 JM |
1996 | |
1997 | if (list) | |
1998 | { | |
1999 | /* Free the storage used by LIST, but not by the strings inside. | |
2000 | This is because rl_complete_internal () frees the strings. */ | |
c5aa993b | 2001 | free ((PTR) list); |
9e0b60a8 JM |
2002 | } |
2003 | list = 0; | |
2004 | index = 0; | |
2005 | ||
2006 | /* Choose the default set of word break characters to break completions. | |
c5aa993b JM |
2007 | If we later find out that we are doing completions on command strings |
2008 | (as opposed to strings supplied by the individual command completer | |
2009 | functions, which can be any string) then we will switch to the | |
2010 | special word break set for command strings, which leaves out the | |
2011 | '-' character used in some commands. */ | |
9e0b60a8 JM |
2012 | |
2013 | rl_completer_word_break_characters = | |
c5aa993b | 2014 | gdb_completer_word_break_characters; |
9e0b60a8 JM |
2015 | |
2016 | /* Decide whether to complete on a list of gdb commands or on symbols. */ | |
2017 | tmp_command = (char *) alloca (point + 1); | |
2018 | p = tmp_command; | |
2019 | ||
2020 | strncpy (tmp_command, line_buffer, point); | |
2021 | tmp_command[point] = '\0'; | |
2022 | /* Since text always contains some number of characters leading up | |
c5aa993b JM |
2023 | to point, we can find the equivalent position in tmp_command |
2024 | by subtracting that many characters from the end of tmp_command. */ | |
9e0b60a8 JM |
2025 | word = tmp_command + point - strlen (text); |
2026 | ||
2027 | if (point == 0) | |
2028 | { | |
2029 | /* An empty line we want to consider ambiguous; that is, it | |
2030 | could be any command. */ | |
2031 | c = (struct cmd_list_element *) -1; | |
2032 | result_list = 0; | |
2033 | } | |
2034 | else | |
2035 | { | |
2036 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
2037 | } | |
2038 | ||
2039 | /* Move p up to the next interesting thing. */ | |
2040 | while (*p == ' ' || *p == '\t') | |
2041 | { | |
2042 | p++; | |
2043 | } | |
2044 | ||
2045 | if (!c) | |
2046 | { | |
2047 | /* It is an unrecognized command. So there are no | |
2048 | possible completions. */ | |
2049 | list = NULL; | |
2050 | } | |
2051 | else if (c == (struct cmd_list_element *) -1) | |
2052 | { | |
2053 | char *q; | |
2054 | ||
2055 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
2056 | doesn't advance over that thing itself. Do so now. */ | |
2057 | q = p; | |
2058 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
2059 | ++q; | |
2060 | if (q != tmp_command + point) | |
2061 | { | |
2062 | /* There is something beyond the ambiguous | |
c5aa993b JM |
2063 | command, so there are no possible completions. For |
2064 | example, "info t " or "info t foo" does not complete | |
2065 | to anything, because "info t" can be "info target" or | |
2066 | "info terminal". */ | |
9e0b60a8 JM |
2067 | list = NULL; |
2068 | } | |
2069 | else | |
2070 | { | |
2071 | /* We're trying to complete on the command which was ambiguous. | |
c5aa993b | 2072 | This we can deal with. */ |
9e0b60a8 JM |
2073 | if (result_list) |
2074 | { | |
2075 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
2076 | word); | |
2077 | } | |
2078 | else | |
2079 | { | |
2080 | list = complete_on_cmdlist (cmdlist, p, word); | |
2081 | } | |
2082 | /* Insure that readline does the right thing with respect to | |
c5aa993b | 2083 | inserting quotes. */ |
9e0b60a8 JM |
2084 | rl_completer_word_break_characters = |
2085 | gdb_completer_command_word_break_characters; | |
2086 | } | |
2087 | } | |
2088 | else | |
2089 | { | |
2090 | /* We've recognized a full command. */ | |
2091 | ||
2092 | if (p == tmp_command + point) | |
2093 | { | |
2094 | /* There is no non-whitespace in the line beyond the command. */ | |
2095 | ||
2096 | if (p[-1] == ' ' || p[-1] == '\t') | |
2097 | { | |
2098 | /* The command is followed by whitespace; we need to complete | |
2099 | on whatever comes after command. */ | |
2100 | if (c->prefixlist) | |
2101 | { | |
2102 | /* It is a prefix command; what comes after it is | |
c5aa993b | 2103 | a subcommand (e.g. "info "). */ |
9e0b60a8 JM |
2104 | list = complete_on_cmdlist (*c->prefixlist, p, word); |
2105 | ||
2106 | /* Insure that readline does the right thing | |
c5aa993b | 2107 | with respect to inserting quotes. */ |
9e0b60a8 JM |
2108 | rl_completer_word_break_characters = |
2109 | gdb_completer_command_word_break_characters; | |
2110 | } | |
2111 | else if (c->enums) | |
2112 | { | |
2113 | list = complete_on_enum (c->enums, p, word); | |
2114 | rl_completer_word_break_characters = | |
2115 | gdb_completer_command_word_break_characters; | |
2116 | } | |
2117 | else | |
2118 | { | |
2119 | /* It is a normal command; what comes after it is | |
c5aa993b | 2120 | completed by the command's completer function. */ |
9e0b60a8 | 2121 | list = (*c->completer) (p, word); |
ae678129 EZ |
2122 | if (c->completer == filename_completer) |
2123 | rl_completer_word_break_characters = | |
2124 | gdb_completer_file_name_break_characters; | |
9e0b60a8 JM |
2125 | } |
2126 | } | |
2127 | else | |
2128 | { | |
2129 | /* The command is not followed by whitespace; we need to | |
2130 | complete on the command itself. e.g. "p" which is a | |
2131 | command itself but also can complete to "print", "ptype" | |
2132 | etc. */ | |
2133 | char *q; | |
2134 | ||
2135 | /* Find the command we are completing on. */ | |
2136 | q = p; | |
2137 | while (q > tmp_command) | |
2138 | { | |
2139 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
2140 | --q; | |
2141 | else | |
2142 | break; | |
2143 | } | |
2144 | ||
2145 | list = complete_on_cmdlist (result_list, q, word); | |
2146 | ||
2147 | /* Insure that readline does the right thing | |
2148 | with respect to inserting quotes. */ | |
2149 | rl_completer_word_break_characters = | |
2150 | gdb_completer_command_word_break_characters; | |
2151 | } | |
2152 | } | |
2153 | else | |
2154 | { | |
2155 | /* There is non-whitespace beyond the command. */ | |
2156 | ||
2157 | if (c->prefixlist && !c->allow_unknown) | |
2158 | { | |
2159 | /* It is an unrecognized subcommand of a prefix command, | |
2160 | e.g. "info adsfkdj". */ | |
2161 | list = NULL; | |
2162 | } | |
2163 | else if (c->enums) | |
2164 | { | |
2165 | list = complete_on_enum (c->enums, p, word); | |
2166 | } | |
2167 | else | |
2168 | { | |
2169 | /* It is a normal command. */ | |
2170 | list = (*c->completer) (p, word); | |
ae678129 EZ |
2171 | if (c->completer == filename_completer) |
2172 | rl_completer_word_break_characters = | |
2173 | gdb_completer_file_name_break_characters; | |
9e0b60a8 JM |
2174 | } |
2175 | } | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | /* If we found a list of potential completions during initialization then | |
2180 | dole them out one at a time. The vector of completions is NULL | |
2181 | terminated, so after returning the last one, return NULL (and continue | |
2182 | to do so) each time we are called after that, until a new list is | |
2183 | available. */ | |
2184 | ||
2185 | if (list) | |
2186 | { | |
2187 | output = list[index]; | |
2188 | if (output) | |
2189 | { | |
2190 | index++; | |
2191 | } | |
2192 | } | |
2193 | ||
2194 | #if 0 | |
2195 | /* Can't do this because readline hasn't yet checked the word breaks | |
2196 | for figuring out whether to insert a quote. */ | |
2197 | if (output == NULL) | |
2198 | /* Make sure the word break characters are set back to normal for the | |
2199 | next time that readline tries to complete something. */ | |
2200 | rl_completer_word_break_characters = | |
2201 | gdb_completer_word_break_characters; | |
2202 | #endif | |
2203 | ||
2204 | return (output); | |
2205 | } | |
2206 | ||
2207 | /* Line completion interface function for readline. */ | |
2208 | ||
2209 | static char * | |
2210 | readline_line_completion_function (text, matches) | |
2211 | char *text; | |
2212 | int matches; | |
2213 | { | |
2214 | return line_completion_function (text, matches, rl_line_buffer, rl_point); | |
2215 | } | |
2216 | ||
2217 | /* Skip over a possibly quoted word (as defined by the quote characters | |
2218 | and word break characters the completer uses). Returns pointer to the | |
2219 | location after the "word". */ | |
2220 | ||
2221 | char * | |
2222 | skip_quoted (str) | |
2223 | char *str; | |
2224 | { | |
2225 | char quote_char = '\0'; | |
2226 | char *scan; | |
2227 | ||
2228 | for (scan = str; *scan != '\0'; scan++) | |
2229 | { | |
2230 | if (quote_char != '\0') | |
2231 | { | |
2232 | /* Ignore everything until the matching close quote char */ | |
2233 | if (*scan == quote_char) | |
2234 | { | |
2235 | /* Found matching close quote. */ | |
2236 | scan++; | |
2237 | break; | |
2238 | } | |
2239 | } | |
2240 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
2241 | { | |
2242 | /* Found start of a quoted string. */ | |
2243 | quote_char = *scan; | |
2244 | } | |
2245 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
2246 | { | |
2247 | break; | |
2248 | } | |
2249 | } | |
2250 | return (scan); | |
2251 | } | |
9e0b60a8 | 2252 | \f |
c5aa993b | 2253 | |
9e0b60a8 JM |
2254 | #ifdef STOP_SIGNAL |
2255 | static void | |
2256 | stop_sig (signo) | |
c5aa993b | 2257 | int signo; |
9e0b60a8 JM |
2258 | { |
2259 | #if STOP_SIGNAL == SIGTSTP | |
2260 | signal (SIGTSTP, SIG_DFL); | |
2261 | sigsetmask (0); | |
2262 | kill (getpid (), SIGTSTP); | |
2263 | signal (SIGTSTP, stop_sig); | |
2264 | #else | |
2265 | signal (STOP_SIGNAL, stop_sig); | |
2266 | #endif | |
2267 | printf_unfiltered ("%s", get_prompt ()); | |
2268 | gdb_flush (gdb_stdout); | |
2269 | ||
2270 | /* Forget about any previous command -- null line now will do nothing. */ | |
2271 | dont_repeat (); | |
2272 | } | |
2273 | #endif /* STOP_SIGNAL */ | |
2274 | ||
2275 | /* Initialize signal handlers. */ | |
2276 | static void | |
2277 | do_nothing (signo) | |
c5aa993b | 2278 | int signo; |
9e0b60a8 JM |
2279 | { |
2280 | /* Under System V the default disposition of a signal is reinstated after | |
2281 | the signal is caught and delivered to an application process. On such | |
2282 | systems one must restore the replacement signal handler if one wishes | |
2283 | to continue handling the signal in one's program. On BSD systems this | |
2284 | is not needed but it is harmless, and it simplifies the code to just do | |
2285 | it unconditionally. */ | |
2286 | signal (signo, do_nothing); | |
2287 | } | |
2288 | ||
2289 | static void | |
2290 | init_signals () | |
2291 | { | |
2292 | signal (SIGINT, request_quit); | |
2293 | ||
2294 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed | |
2295 | to the inferior and breakpoints will be ignored. */ | |
2296 | #ifdef SIGTRAP | |
2297 | signal (SIGTRAP, SIG_DFL); | |
2298 | #endif | |
2299 | ||
2300 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
2301 | passed to the inferior, which we don't want. It would be | |
2302 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
2303 | on BSD4.3 systems using vfork, that can affect the | |
2304 | GDB process as well as the inferior (the signal handling tables | |
2305 | might be in memory, shared between the two). Since we establish | |
2306 | a handler for SIGQUIT, when we call exec it will set the signal | |
2307 | to SIG_DFL for us. */ | |
2308 | signal (SIGQUIT, do_nothing); | |
2309 | #ifdef SIGHUP | |
2310 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
2311 | signal (SIGHUP, disconnect); | |
2312 | #endif | |
2313 | signal (SIGFPE, float_handler); | |
2314 | ||
2315 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
2316 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
2317 | #endif | |
2318 | } | |
2319 | \f | |
2320 | /* Read one line from the command input stream `instream' | |
2321 | into the local static buffer `linebuffer' (whose current length | |
2322 | is `linelength'). | |
2323 | The buffer is made bigger as necessary. | |
2324 | Returns the address of the start of the line. | |
2325 | ||
2326 | NULL is returned for end of file. | |
2327 | ||
2328 | *If* the instream == stdin & stdin is a terminal, the line read | |
2329 | is copied into the file line saver (global var char *line, | |
2330 | length linesize) so that it can be duplicated. | |
2331 | ||
2332 | This routine either uses fancy command line editing or | |
2333 | simple input as the user has requested. */ | |
2334 | ||
2335 | char * | |
2336 | command_line_input (prompt_arg, repeat, annotation_suffix) | |
2337 | char *prompt_arg; | |
2338 | int repeat; | |
2339 | char *annotation_suffix; | |
2340 | { | |
2341 | static char *linebuffer = 0; | |
2342 | static unsigned linelength = 0; | |
2343 | register char *p; | |
2344 | char *p1; | |
2345 | char *rl; | |
2346 | char *local_prompt = prompt_arg; | |
2347 | char *nline; | |
2348 | char got_eof = 0; | |
2349 | ||
2350 | /* The annotation suffix must be non-NULL. */ | |
2351 | if (annotation_suffix == NULL) | |
2352 | annotation_suffix = ""; | |
2353 | ||
2354 | if (annotation_level > 1 && instream == stdin) | |
2355 | { | |
2356 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
2357 | + strlen (annotation_suffix) + 40); | |
2358 | if (prompt_arg == NULL) | |
2359 | local_prompt[0] = '\0'; | |
2360 | else | |
2361 | strcpy (local_prompt, prompt_arg); | |
2362 | strcat (local_prompt, "\n\032\032"); | |
2363 | strcat (local_prompt, annotation_suffix); | |
2364 | strcat (local_prompt, "\n"); | |
2365 | } | |
2366 | ||
2367 | if (linebuffer == 0) | |
2368 | { | |
2369 | linelength = 80; | |
2370 | linebuffer = (char *) xmalloc (linelength); | |
2371 | } | |
2372 | ||
2373 | p = linebuffer; | |
2374 | ||
2375 | /* Control-C quits instantly if typed while in this loop | |
2376 | since it should not wait until the user types a newline. */ | |
2377 | immediate_quit++; | |
2378 | #ifdef STOP_SIGNAL | |
2379 | if (job_control) | |
2380 | { | |
6426a772 | 2381 | if (event_loop_p) |
9e0b60a8 JM |
2382 | signal (STOP_SIGNAL, handle_stop_sig); |
2383 | else | |
2384 | signal (STOP_SIGNAL, stop_sig); | |
2385 | } | |
2386 | #endif | |
2387 | ||
2388 | while (1) | |
2389 | { | |
2390 | /* Make sure that all output has been output. Some machines may let | |
c5aa993b | 2391 | you get away with leaving out some of the gdb_flush, but not all. */ |
9e0b60a8 JM |
2392 | wrap_here (""); |
2393 | gdb_flush (gdb_stdout); | |
2394 | gdb_flush (gdb_stderr); | |
2395 | ||
2396 | if (source_file_name != NULL) | |
2397 | { | |
2398 | ++source_line_number; | |
2399 | sprintf (source_error, | |
2400 | "%s%s:%d: Error in sourced command file:\n", | |
2401 | source_pre_error, | |
2402 | source_file_name, | |
2403 | source_line_number); | |
2404 | error_pre_print = source_error; | |
2405 | } | |
2406 | ||
2407 | if (annotation_level > 1 && instream == stdin) | |
2408 | { | |
2409 | printf_unfiltered ("\n\032\032pre-"); | |
2410 | printf_unfiltered (annotation_suffix); | |
2411 | printf_unfiltered ("\n"); | |
2412 | } | |
2413 | ||
2414 | /* Don't use fancy stuff if not talking to stdin. */ | |
2415 | if (readline_hook && instream == NULL) | |
2416 | { | |
2417 | rl = (*readline_hook) (local_prompt); | |
2418 | } | |
2419 | else if (command_editing_p && instream == stdin && ISATTY (instream)) | |
2420 | { | |
2421 | rl = readline (local_prompt); | |
2422 | } | |
2423 | else | |
2424 | { | |
2425 | rl = gdb_readline (local_prompt); | |
2426 | } | |
2427 | ||
2428 | if (annotation_level > 1 && instream == stdin) | |
2429 | { | |
2430 | printf_unfiltered ("\n\032\032post-"); | |
2431 | printf_unfiltered (annotation_suffix); | |
2432 | printf_unfiltered ("\n"); | |
2433 | } | |
2434 | ||
2435 | if (!rl || rl == (char *) EOF) | |
2436 | { | |
2437 | got_eof = 1; | |
2438 | break; | |
2439 | } | |
c5aa993b | 2440 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
9e0b60a8 | 2441 | { |
c5aa993b | 2442 | linelength = strlen (rl) + 1 + (p - linebuffer); |
9e0b60a8 JM |
2443 | nline = (char *) xrealloc (linebuffer, linelength); |
2444 | p += nline - linebuffer; | |
2445 | linebuffer = nline; | |
2446 | } | |
2447 | p1 = rl; | |
2448 | /* Copy line. Don't copy null at end. (Leaves line alone | |
2449 | if this was just a newline) */ | |
2450 | while (*p1) | |
2451 | *p++ = *p1++; | |
2452 | ||
c5aa993b | 2453 | free (rl); /* Allocated in readline. */ |
9e0b60a8 JM |
2454 | |
2455 | if (p == linebuffer || *(p - 1) != '\\') | |
2456 | break; | |
2457 | ||
2458 | p--; /* Put on top of '\'. */ | |
2459 | local_prompt = (char *) 0; | |
c5aa993b | 2460 | } |
9e0b60a8 JM |
2461 | |
2462 | #ifdef STOP_SIGNAL | |
2463 | if (job_control) | |
2464 | signal (STOP_SIGNAL, SIG_DFL); | |
2465 | #endif | |
2466 | immediate_quit--; | |
2467 | ||
2468 | if (got_eof) | |
2469 | return NULL; | |
2470 | ||
2471 | #define SERVER_COMMAND_LENGTH 7 | |
2472 | server_command = | |
2473 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
c5aa993b | 2474 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); |
9e0b60a8 JM |
2475 | if (server_command) |
2476 | { | |
2477 | /* Note that we don't set `line'. Between this and the check in | |
c5aa993b JM |
2478 | dont_repeat, this insures that repeating will still do the |
2479 | right thing. */ | |
9e0b60a8 JM |
2480 | *p = '\0'; |
2481 | return linebuffer + SERVER_COMMAND_LENGTH; | |
2482 | } | |
2483 | ||
2484 | /* Do history expansion if that is wished. */ | |
2485 | if (history_expansion_p && instream == stdin | |
2486 | && ISATTY (instream)) | |
2487 | { | |
2488 | char *history_value; | |
2489 | int expanded; | |
2490 | ||
2491 | *p = '\0'; /* Insert null now. */ | |
2492 | expanded = history_expand (linebuffer, &history_value); | |
2493 | if (expanded) | |
2494 | { | |
2495 | /* Print the changes. */ | |
2496 | printf_unfiltered ("%s\n", history_value); | |
2497 | ||
2498 | /* If there was an error, call this function again. */ | |
2499 | if (expanded < 0) | |
2500 | { | |
2501 | free (history_value); | |
2502 | return command_line_input (prompt_arg, repeat, annotation_suffix); | |
2503 | } | |
2504 | if (strlen (history_value) > linelength) | |
2505 | { | |
2506 | linelength = strlen (history_value) + 1; | |
2507 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
2508 | } | |
2509 | strcpy (linebuffer, history_value); | |
c5aa993b | 2510 | p = linebuffer + strlen (linebuffer); |
9e0b60a8 JM |
2511 | free (history_value); |
2512 | } | |
2513 | } | |
2514 | ||
2515 | /* If we just got an empty line, and that is supposed | |
2516 | to repeat the previous command, return the value in the | |
2517 | global buffer. */ | |
2518 | if (repeat && p == linebuffer) | |
2519 | return line; | |
c5aa993b | 2520 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); |
9e0b60a8 JM |
2521 | if (repeat && !*p1) |
2522 | return line; | |
2523 | ||
2524 | *p = 0; | |
2525 | ||
2526 | /* Add line to history if appropriate. */ | |
2527 | if (instream == stdin | |
2528 | && ISATTY (stdin) && *linebuffer) | |
2529 | add_history (linebuffer); | |
2530 | ||
2531 | /* Note: lines consisting solely of comments are added to the command | |
2532 | history. This is useful when you type a command, and then | |
2533 | realize you don't want to execute it quite yet. You can comment | |
2534 | out the command and then later fetch it from the value history | |
2535 | and remove the '#'. The kill ring is probably better, but some | |
2536 | people are in the habit of commenting things out. */ | |
2537 | if (*p1 == '#') | |
c5aa993b | 2538 | *p1 = '\0'; /* Found a comment. */ |
9e0b60a8 JM |
2539 | |
2540 | /* Save into global buffer if appropriate. */ | |
2541 | if (repeat) | |
2542 | { | |
2543 | if (linelength > linesize) | |
2544 | { | |
2545 | line = xrealloc (line, linelength); | |
2546 | linesize = linelength; | |
2547 | } | |
2548 | strcpy (line, linebuffer); | |
2549 | return line; | |
2550 | } | |
2551 | ||
2552 | return linebuffer; | |
2553 | } | |
2554 | \f | |
2555 | ||
2556 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
2557 | code bodies. This is typically used when we encounter an "else" | |
2558 | clause for an "if" command. */ | |
2559 | ||
2560 | static void | |
2561 | realloc_body_list (command, new_length) | |
2562 | struct command_line *command; | |
2563 | int new_length; | |
2564 | { | |
2565 | int n; | |
2566 | struct command_line **body_list; | |
2567 | ||
2568 | n = command->body_count; | |
2569 | ||
2570 | /* Nothing to do? */ | |
2571 | if (new_length <= n) | |
2572 | return; | |
2573 | ||
2574 | body_list = (struct command_line **) | |
2575 | xmalloc (sizeof (struct command_line *) * new_length); | |
2576 | ||
2577 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
2578 | ||
2579 | free (command->body_list); | |
2580 | command->body_list = body_list; | |
2581 | command->body_count = new_length; | |
2582 | } | |
2583 | ||
2584 | /* Read one line from the input stream. If the command is an "else" or | |
2585 | "end", return such an indication to the caller. */ | |
2586 | ||
2587 | static enum misc_command_type | |
2588 | read_next_line (command) | |
2589 | struct command_line **command; | |
2590 | { | |
2591 | char *p, *p1, *prompt_ptr, control_prompt[256]; | |
2592 | int i = 0; | |
2593 | ||
2594 | if (control_level >= 254) | |
2595 | error ("Control nesting too deep!\n"); | |
2596 | ||
2597 | /* Set a prompt based on the nesting of the control commands. */ | |
2598 | if (instream == stdin || (instream == 0 && readline_hook != NULL)) | |
2599 | { | |
2600 | for (i = 0; i < control_level; i++) | |
2601 | control_prompt[i] = ' '; | |
2602 | control_prompt[i] = '>'; | |
c5aa993b JM |
2603 | control_prompt[i + 1] = '\0'; |
2604 | prompt_ptr = (char *) &control_prompt[0]; | |
9e0b60a8 JM |
2605 | } |
2606 | else | |
2607 | prompt_ptr = NULL; | |
2608 | ||
2609 | p = command_line_input (prompt_ptr, instream == stdin, "commands"); | |
2610 | ||
2611 | /* Not sure what to do here. */ | |
2612 | if (p == NULL) | |
2613 | return end_command; | |
2614 | ||
2615 | /* Strip leading and trailing whitespace. */ | |
2616 | while (*p == ' ' || *p == '\t') | |
2617 | p++; | |
2618 | ||
2619 | p1 = p + strlen (p); | |
2620 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) | |
2621 | p1--; | |
2622 | ||
2623 | /* Blanks and comments don't really do anything, but we need to | |
2624 | distinguish them from else, end and other commands which can be | |
2625 | executed. */ | |
2626 | if (p1 == p || p[0] == '#') | |
2627 | return nop_command; | |
c5aa993b | 2628 | |
9e0b60a8 JM |
2629 | /* Is this the end of a simple, while, or if control structure? */ |
2630 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
2631 | return end_command; | |
2632 | ||
2633 | /* Is the else clause of an if control structure? */ | |
2634 | if (p1 - p == 4 && !strncmp (p, "else", 4)) | |
2635 | return else_command; | |
2636 | ||
2637 | /* Check for while, if, break, continue, etc and build a new command | |
2638 | line structure for them. */ | |
2639 | if (p1 - p > 5 && !strncmp (p, "while", 5)) | |
2640 | *command = build_command_line (while_control, p + 6); | |
2641 | else if (p1 - p > 2 && !strncmp (p, "if", 2)) | |
2642 | *command = build_command_line (if_control, p + 3); | |
2643 | else if (p1 - p == 10 && !strncmp (p, "loop_break", 10)) | |
2644 | { | |
2645 | *command = (struct command_line *) | |
2646 | xmalloc (sizeof (struct command_line)); | |
2647 | (*command)->next = NULL; | |
2648 | (*command)->line = NULL; | |
2649 | (*command)->control_type = break_control; | |
2650 | (*command)->body_count = 0; | |
2651 | (*command)->body_list = NULL; | |
2652 | } | |
2653 | else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13)) | |
2654 | { | |
2655 | *command = (struct command_line *) | |
2656 | xmalloc (sizeof (struct command_line)); | |
2657 | (*command)->next = NULL; | |
2658 | (*command)->line = NULL; | |
2659 | (*command)->control_type = continue_control; | |
2660 | (*command)->body_count = 0; | |
2661 | (*command)->body_list = NULL; | |
2662 | } | |
2663 | else | |
2664 | { | |
2665 | /* A normal command. */ | |
2666 | *command = (struct command_line *) | |
2667 | xmalloc (sizeof (struct command_line)); | |
2668 | (*command)->next = NULL; | |
2669 | (*command)->line = savestring (p, p1 - p); | |
2670 | (*command)->control_type = simple_control; | |
2671 | (*command)->body_count = 0; | |
2672 | (*command)->body_list = NULL; | |
c5aa993b | 2673 | } |
9e0b60a8 JM |
2674 | |
2675 | /* Nothing special. */ | |
2676 | return ok_command; | |
2677 | } | |
2678 | ||
2679 | /* Recursively read in the control structures and create a command_line | |
2680 | structure from them. | |
2681 | ||
2682 | The parent_control parameter is the control structure in which the | |
2683 | following commands are nested. */ | |
2684 | ||
2685 | static enum command_control_type | |
2686 | recurse_read_control_structure (current_cmd) | |
2687 | struct command_line *current_cmd; | |
2688 | { | |
2689 | int current_body, i; | |
2690 | enum misc_command_type val; | |
2691 | enum command_control_type ret; | |
2692 | struct command_line **body_ptr, *child_tail, *next; | |
2693 | ||
2694 | child_tail = NULL; | |
2695 | current_body = 1; | |
2696 | ||
2697 | /* Sanity checks. */ | |
2698 | if (current_cmd->control_type == simple_control) | |
2699 | { | |
2700 | error ("Recursed on a simple control type\n"); | |
2701 | return invalid_control; | |
2702 | } | |
2703 | ||
2704 | if (current_body > current_cmd->body_count) | |
2705 | { | |
2706 | error ("Allocated body is smaller than this command type needs\n"); | |
2707 | return invalid_control; | |
2708 | } | |
2709 | ||
2710 | /* Read lines from the input stream and build control structures. */ | |
2711 | while (1) | |
2712 | { | |
2713 | dont_repeat (); | |
2714 | ||
2715 | next = NULL; | |
2716 | val = read_next_line (&next); | |
2717 | ||
2718 | /* Just skip blanks and comments. */ | |
2719 | if (val == nop_command) | |
2720 | continue; | |
2721 | ||
2722 | if (val == end_command) | |
2723 | { | |
2724 | if (current_cmd->control_type == while_control | |
2725 | || current_cmd->control_type == if_control) | |
2726 | { | |
2727 | /* Success reading an entire control structure. */ | |
2728 | ret = simple_control; | |
2729 | break; | |
2730 | } | |
2731 | else | |
2732 | { | |
2733 | ret = invalid_control; | |
2734 | break; | |
2735 | } | |
2736 | } | |
c5aa993b | 2737 | |
9e0b60a8 JM |
2738 | /* Not the end of a control structure. */ |
2739 | if (val == else_command) | |
2740 | { | |
2741 | if (current_cmd->control_type == if_control | |
2742 | && current_body == 1) | |
2743 | { | |
2744 | realloc_body_list (current_cmd, 2); | |
2745 | current_body = 2; | |
2746 | child_tail = NULL; | |
2747 | continue; | |
2748 | } | |
2749 | else | |
2750 | { | |
2751 | ret = invalid_control; | |
2752 | break; | |
2753 | } | |
2754 | } | |
2755 | ||
2756 | if (child_tail) | |
2757 | { | |
2758 | child_tail->next = next; | |
2759 | } | |
2760 | else | |
2761 | { | |
2762 | body_ptr = current_cmd->body_list; | |
2763 | for (i = 1; i < current_body; i++) | |
2764 | body_ptr++; | |
2765 | ||
2766 | *body_ptr = next; | |
2767 | ||
2768 | } | |
2769 | ||
2770 | child_tail = next; | |
2771 | ||
2772 | /* If the latest line is another control structure, then recurse | |
c5aa993b | 2773 | on it. */ |
9e0b60a8 JM |
2774 | if (next->control_type == while_control |
2775 | || next->control_type == if_control) | |
2776 | { | |
2777 | control_level++; | |
2778 | ret = recurse_read_control_structure (next); | |
2779 | control_level--; | |
2780 | ||
2781 | if (ret != simple_control) | |
2782 | break; | |
2783 | } | |
2784 | } | |
2785 | ||
2786 | dont_repeat (); | |
2787 | ||
2788 | return ret; | |
2789 | } | |
2790 | ||
2791 | /* Read lines from the input stream and accumulate them in a chain of | |
2792 | struct command_line's, which is then returned. For input from a | |
2793 | terminal, the special command "end" is used to mark the end of the | |
2794 | input, and is not included in the returned chain of commands. */ | |
2795 | ||
2796 | #define END_MESSAGE "End with a line saying just \"end\"." | |
2797 | ||
2798 | struct command_line * | |
2799 | read_command_lines (prompt_arg, from_tty) | |
2800 | char *prompt_arg; | |
2801 | int from_tty; | |
2802 | { | |
2803 | struct command_line *head, *tail, *next; | |
2804 | struct cleanup *old_chain; | |
2805 | enum command_control_type ret; | |
2806 | enum misc_command_type val; | |
2807 | ||
c5aa993b | 2808 | control_level = 0; |
9e0b60a8 JM |
2809 | if (readline_begin_hook) |
2810 | { | |
2811 | /* Note - intentional to merge messages with no newline */ | |
2812 | (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE); | |
2813 | } | |
2814 | else if (from_tty && input_from_terminal_p ()) | |
2815 | { | |
2816 | printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE); | |
2817 | gdb_flush (gdb_stdout); | |
2818 | } | |
2819 | ||
2820 | head = tail = NULL; | |
2821 | old_chain = NULL; | |
2822 | ||
2823 | while (1) | |
2824 | { | |
2825 | val = read_next_line (&next); | |
2826 | ||
2827 | /* Ignore blank lines or comments. */ | |
2828 | if (val == nop_command) | |
2829 | continue; | |
2830 | ||
2831 | if (val == end_command) | |
2832 | { | |
2833 | ret = simple_control; | |
2834 | break; | |
2835 | } | |
2836 | ||
2837 | if (val != ok_command) | |
2838 | { | |
2839 | ret = invalid_control; | |
2840 | break; | |
2841 | } | |
2842 | ||
2843 | if (next->control_type == while_control | |
2844 | || next->control_type == if_control) | |
2845 | { | |
2846 | control_level++; | |
2847 | ret = recurse_read_control_structure (next); | |
2848 | control_level--; | |
2849 | ||
2850 | if (ret == invalid_control) | |
2851 | break; | |
2852 | } | |
c5aa993b | 2853 | |
9e0b60a8 JM |
2854 | if (tail) |
2855 | { | |
2856 | tail->next = next; | |
2857 | } | |
2858 | else | |
2859 | { | |
2860 | head = next; | |
e41a3b1a | 2861 | old_chain = make_cleanup_free_command_lines (&head); |
9e0b60a8 JM |
2862 | } |
2863 | tail = next; | |
2864 | } | |
2865 | ||
2866 | dont_repeat (); | |
2867 | ||
2868 | if (head) | |
2869 | { | |
2870 | if (ret != invalid_control) | |
2871 | { | |
2872 | discard_cleanups (old_chain); | |
2873 | } | |
2874 | else | |
2875 | do_cleanups (old_chain); | |
2876 | } | |
2877 | ||
2878 | if (readline_end_hook) | |
2879 | { | |
2880 | (*readline_end_hook) (); | |
2881 | } | |
2882 | return (head); | |
2883 | } | |
2884 | ||
2885 | /* Free a chain of struct command_line's. */ | |
2886 | ||
2887 | void | |
2888 | free_command_lines (lptr) | |
c5aa993b | 2889 | struct command_line **lptr; |
9e0b60a8 JM |
2890 | { |
2891 | register struct command_line *l = *lptr; | |
2892 | register struct command_line *next; | |
2893 | struct command_line **blist; | |
2894 | int i; | |
2895 | ||
2896 | while (l) | |
2897 | { | |
2898 | if (l->body_count > 0) | |
2899 | { | |
2900 | blist = l->body_list; | |
2901 | for (i = 0; i < l->body_count; i++, blist++) | |
2902 | free_command_lines (blist); | |
2903 | } | |
2904 | next = l->next; | |
2905 | free (l->line); | |
c5aa993b | 2906 | free ((PTR) l); |
9e0b60a8 JM |
2907 | l = next; |
2908 | } | |
2909 | } | |
e41a3b1a AC |
2910 | |
2911 | static void | |
2912 | do_free_command_lines_cleanup (void *arg) | |
2913 | { | |
2914 | free_command_lines (arg); | |
2915 | } | |
2916 | ||
2917 | static struct cleanup * | |
2918 | make_cleanup_free_command_lines (struct command_line **arg) | |
2919 | { | |
2920 | return make_cleanup (do_free_command_lines_cleanup, arg); | |
2921 | } | |
9e0b60a8 JM |
2922 | \f |
2923 | /* Add an element to the list of info subcommands. */ | |
2924 | ||
56382845 | 2925 | struct cmd_list_element * |
9e0b60a8 JM |
2926 | add_info (name, fun, doc) |
2927 | char *name; | |
507f3c78 | 2928 | void (*fun) (char *, int); |
9e0b60a8 JM |
2929 | char *doc; |
2930 | { | |
56382845 | 2931 | return add_cmd (name, no_class, fun, doc, &infolist); |
9e0b60a8 JM |
2932 | } |
2933 | ||
2934 | /* Add an alias to the list of info subcommands. */ | |
2935 | ||
56382845 | 2936 | struct cmd_list_element * |
9e0b60a8 JM |
2937 | add_info_alias (name, oldname, abbrev_flag) |
2938 | char *name; | |
2939 | char *oldname; | |
2940 | int abbrev_flag; | |
2941 | { | |
56382845 | 2942 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); |
9e0b60a8 JM |
2943 | } |
2944 | ||
2945 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2946 | Therefore, its own definition is called only for "info" with no args. */ | |
2947 | ||
2948 | /* ARGSUSED */ | |
2949 | static void | |
2950 | info_command (arg, from_tty) | |
2951 | char *arg; | |
2952 | int from_tty; | |
2953 | { | |
2954 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); | |
2955 | help_list (infolist, "info ", -1, gdb_stdout); | |
2956 | } | |
2957 | ||
2958 | /* The "complete" command is used by Emacs to implement completion. */ | |
2959 | ||
2960 | /* ARGSUSED */ | |
2961 | static void | |
2962 | complete_command (arg, from_tty) | |
2963 | char *arg; | |
2964 | int from_tty; | |
2965 | { | |
2966 | int i; | |
2967 | int argpoint; | |
2968 | char *completion; | |
2969 | ||
2970 | dont_repeat (); | |
2971 | ||
2972 | if (arg == NULL) | |
2973 | arg = ""; | |
2974 | argpoint = strlen (arg); | |
2975 | ||
2976 | for (completion = line_completion_function (arg, i = 0, arg, argpoint); | |
2977 | completion; | |
2978 | completion = line_completion_function (arg, ++i, arg, argpoint)) | |
2979 | { | |
2980 | printf_unfiltered ("%s\n", completion); | |
2981 | free (completion); | |
2982 | } | |
2983 | } | |
2984 | ||
2985 | /* The "show" command with no arguments shows all the settings. */ | |
2986 | ||
2987 | /* ARGSUSED */ | |
2988 | static void | |
2989 | show_command (arg, from_tty) | |
2990 | char *arg; | |
2991 | int from_tty; | |
2992 | { | |
2993 | cmd_show_list (showlist, from_tty, ""); | |
2994 | } | |
2995 | \f | |
2996 | /* Add an element to the list of commands. */ | |
2997 | ||
56382845 | 2998 | struct cmd_list_element * |
9e0b60a8 JM |
2999 | add_com (name, class, fun, doc) |
3000 | char *name; | |
3001 | enum command_class class; | |
507f3c78 | 3002 | void (*fun) (char *, int); |
9e0b60a8 JM |
3003 | char *doc; |
3004 | { | |
56382845 | 3005 | return add_cmd (name, class, fun, doc, &cmdlist); |
9e0b60a8 JM |
3006 | } |
3007 | ||
3008 | /* Add an alias or abbreviation command to the list of commands. */ | |
3009 | ||
56382845 | 3010 | struct cmd_list_element * |
9e0b60a8 JM |
3011 | add_com_alias (name, oldname, class, abbrev_flag) |
3012 | char *name; | |
3013 | char *oldname; | |
3014 | enum command_class class; | |
3015 | int abbrev_flag; | |
3016 | { | |
56382845 | 3017 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); |
9e0b60a8 JM |
3018 | } |
3019 | ||
3020 | void | |
3021 | error_no_arg (why) | |
3022 | char *why; | |
3023 | { | |
3024 | error ("Argument required (%s).", why); | |
3025 | } | |
3026 | ||
3027 | /* ARGSUSED */ | |
3028 | static void | |
3029 | help_command (command, from_tty) | |
3030 | char *command; | |
c5aa993b | 3031 | int from_tty; /* Ignored */ |
9e0b60a8 JM |
3032 | { |
3033 | help_cmd (command, gdb_stdout); | |
3034 | } | |
3035 | \f | |
3036 | static void | |
3037 | validate_comname (comname) | |
3038 | char *comname; | |
3039 | { | |
3040 | register char *p; | |
3041 | ||
3042 | if (comname == 0) | |
3043 | error_no_arg ("name of command to define"); | |
3044 | ||
3045 | p = comname; | |
3046 | while (*p) | |
3047 | { | |
c5aa993b | 3048 | if (!isalnum (*p) && *p != '-' && *p != '_') |
9e0b60a8 JM |
3049 | error ("Junk in argument list: \"%s\"", p); |
3050 | p++; | |
3051 | } | |
3052 | } | |
3053 | ||
3054 | /* This is just a placeholder in the command data structures. */ | |
3055 | static void | |
3056 | user_defined_command (ignore, from_tty) | |
3057 | char *ignore; | |
3058 | int from_tty; | |
3059 | { | |
3060 | } | |
3061 | ||
3062 | static void | |
3063 | define_command (comname, from_tty) | |
3064 | char *comname; | |
3065 | int from_tty; | |
3066 | { | |
3067 | register struct command_line *cmds; | |
3068 | register struct cmd_list_element *c, *newc, *hookc = 0; | |
3069 | char *tem = comname; | |
3070 | char tmpbuf[128]; | |
3071 | #define HOOK_STRING "hook-" | |
3072 | #define HOOK_LEN 5 | |
3073 | ||
3074 | validate_comname (comname); | |
3075 | ||
3076 | /* Look it up, and verify that we got an exact match. */ | |
3077 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); | |
3078 | if (c && !STREQ (comname, c->name)) | |
3079 | c = 0; | |
3080 | ||
3081 | if (c) | |
3082 | { | |
3083 | if (c->class == class_user || c->class == class_alias) | |
3084 | tem = "Redefine command \"%s\"? "; | |
3085 | else | |
3086 | tem = "Really redefine built-in command \"%s\"? "; | |
3087 | if (!query (tem, c->name)) | |
3088 | error ("Command \"%s\" not redefined.", c->name); | |
3089 | } | |
3090 | ||
3091 | /* If this new command is a hook, then mark the command which it | |
3092 | is hooking. Note that we allow hooking `help' commands, so that | |
3093 | we can hook the `stop' pseudo-command. */ | |
3094 | ||
3095 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
3096 | { | |
3097 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
c5aa993b | 3098 | tem = comname + HOOK_LEN; |
9e0b60a8 | 3099 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); |
c5aa993b | 3100 | if (hookc && !STREQ (comname + HOOK_LEN, hookc->name)) |
9e0b60a8 JM |
3101 | hookc = 0; |
3102 | if (!hookc) | |
3103 | { | |
3104 | warning ("Your new `%s' command does not hook any existing command.", | |
3105 | comname); | |
3106 | if (!query ("Proceed? ")) | |
3107 | error ("Not confirmed."); | |
3108 | } | |
3109 | } | |
3110 | ||
3111 | comname = savestring (comname, strlen (comname)); | |
3112 | ||
3113 | /* If the rest of the commands will be case insensitive, this one | |
3114 | should behave in the same manner. */ | |
3115 | for (tem = comname; *tem; tem++) | |
c5aa993b JM |
3116 | if (isupper (*tem)) |
3117 | *tem = tolower (*tem); | |
9e0b60a8 JM |
3118 | |
3119 | sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname); | |
3120 | cmds = read_command_lines (tmpbuf, from_tty); | |
3121 | ||
3122 | if (c && c->class == class_user) | |
3123 | free_command_lines (&c->user_commands); | |
3124 | ||
3125 | newc = add_cmd (comname, class_user, user_defined_command, | |
c5aa993b JM |
3126 | (c && c->class == class_user) |
3127 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
9e0b60a8 JM |
3128 | newc->user_commands = cmds; |
3129 | ||
3130 | /* If this new command is a hook, then mark both commands as being | |
3131 | tied. */ | |
3132 | if (hookc) | |
3133 | { | |
3134 | hookc->hook = newc; /* Target gets hooked. */ | |
3135 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
3136 | } | |
3137 | } | |
3138 | ||
3139 | static void | |
3140 | document_command (comname, from_tty) | |
3141 | char *comname; | |
3142 | int from_tty; | |
3143 | { | |
3144 | struct command_line *doclines; | |
3145 | register struct cmd_list_element *c; | |
3146 | char *tem = comname; | |
3147 | char tmpbuf[128]; | |
3148 | ||
3149 | validate_comname (comname); | |
3150 | ||
3151 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
3152 | ||
3153 | if (c->class != class_user) | |
3154 | error ("Command \"%s\" is built-in.", comname); | |
3155 | ||
3156 | sprintf (tmpbuf, "Type documentation for \"%s\".", comname); | |
3157 | doclines = read_command_lines (tmpbuf, from_tty); | |
3158 | ||
c5aa993b JM |
3159 | if (c->doc) |
3160 | free (c->doc); | |
9e0b60a8 JM |
3161 | |
3162 | { | |
3163 | register struct command_line *cl1; | |
3164 | register int len = 0; | |
3165 | ||
3166 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
3167 | len += strlen (cl1->line) + 1; | |
3168 | ||
3169 | c->doc = (char *) xmalloc (len + 1); | |
3170 | *c->doc = 0; | |
3171 | ||
3172 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
3173 | { | |
3174 | strcat (c->doc, cl1->line); | |
3175 | if (cl1->next) | |
3176 | strcat (c->doc, "\n"); | |
3177 | } | |
3178 | } | |
3179 | ||
3180 | free_command_lines (&doclines); | |
3181 | } | |
3182 | \f | |
3183 | /* Print the GDB banner. */ | |
3184 | void | |
3185 | print_gdb_version (stream) | |
d9fcf2fb | 3186 | struct ui_file *stream; |
9e0b60a8 JM |
3187 | { |
3188 | /* From GNU coding standards, first line is meant to be easy for a | |
3189 | program to parse, and is just canonical program name and version | |
3190 | number, which starts after last space. */ | |
3191 | ||
8b93c638 JM |
3192 | #ifdef UI_OUT |
3193 | /* Print it console style until a format is defined */ | |
3194 | fprintf_filtered (stream, "GNU gdb %s (UI_OUT)\n", version); | |
3195 | #else | |
9e0b60a8 | 3196 | fprintf_filtered (stream, "GNU gdb %s\n", version); |
8b93c638 | 3197 | #endif |
9e0b60a8 JM |
3198 | |
3199 | /* Second line is a copyright notice. */ | |
3200 | ||
107b56f0 | 3201 | fprintf_filtered (stream, "Copyright 2000 Free Software Foundation, Inc.\n"); |
9e0b60a8 JM |
3202 | |
3203 | /* Following the copyright is a brief statement that the program is | |
3204 | free software, that users are free to copy and change it on | |
3205 | certain conditions, that it is covered by the GNU GPL, and that | |
3206 | there is no warranty. */ | |
3207 | ||
3208 | fprintf_filtered (stream, "\ | |
3209 | GDB is free software, covered by the GNU General Public License, and you are\n\ | |
3210 | welcome to change it and/or distribute copies of it under certain conditions.\n\ | |
3211 | Type \"show copying\" to see the conditions.\n\ | |
3212 | There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n"); | |
3213 | ||
3214 | /* After the required info we print the configuration information. */ | |
3215 | ||
3216 | fprintf_filtered (stream, "This GDB was configured as \""); | |
3217 | if (!STREQ (host_name, target_name)) | |
3218 | { | |
3219 | fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name); | |
3220 | } | |
3221 | else | |
3222 | { | |
3223 | fprintf_filtered (stream, "%s", host_name); | |
3224 | } | |
3225 | fprintf_filtered (stream, "\"."); | |
3226 | } | |
3227 | ||
3228 | /* ARGSUSED */ | |
3229 | static void | |
3230 | show_version (args, from_tty) | |
3231 | char *args; | |
3232 | int from_tty; | |
3233 | { | |
3234 | immediate_quit++; | |
3235 | print_gdb_version (gdb_stdout); | |
3236 | printf_filtered ("\n"); | |
3237 | immediate_quit--; | |
3238 | } | |
3239 | \f | |
3240 | /* get_prompt: access method for the GDB prompt string. */ | |
3241 | ||
3242 | #define MAX_PROMPT_SIZE 256 | |
3243 | ||
3244 | /* | |
3245 | * int get_prompt_1 (char * buf); | |
3246 | * | |
3247 | * Work-horse for get_prompt (called via catch_errors). | |
3248 | * Argument is buffer to hold the formatted prompt. | |
3249 | * | |
3250 | * Returns: 1 for success (use formatted prompt) | |
3251 | * 0 for failure (use gdb_prompt_string). | |
c5aa993b | 3252 | */ |
9e0b60a8 JM |
3253 | |
3254 | static int gdb_prompt_escape; | |
3255 | ||
3256 | static int | |
3257 | get_prompt_1 (formatted_prompt) | |
3258 | char *formatted_prompt; | |
3259 | { | |
3260 | char *local_prompt; | |
3261 | ||
6426a772 | 3262 | if (event_loop_p) |
9e0b60a8 JM |
3263 | local_prompt = PROMPT (0); |
3264 | else | |
3265 | local_prompt = gdb_prompt_string; | |
3266 | ||
3267 | ||
3268 | if (gdb_prompt_escape == 0) | |
3269 | { | |
c5aa993b | 3270 | return 0; /* do no formatting */ |
9e0b60a8 | 3271 | } |
c5aa993b JM |
3272 | else |
3273 | /* formatted prompt */ | |
9e0b60a8 | 3274 | { |
c5aa993b | 3275 | char fmt[40], *promptp, *outp, *tmp; |
9e0b60a8 | 3276 | value_ptr arg_val; |
c5aa993b JM |
3277 | DOUBLEST doubleval; |
3278 | LONGEST longval; | |
9e0b60a8 JM |
3279 | CORE_ADDR addrval; |
3280 | ||
3281 | int i, len; | |
3282 | struct type *arg_type, *elt_type; | |
3283 | ||
3284 | promptp = local_prompt; | |
c5aa993b | 3285 | outp = formatted_prompt; |
9e0b60a8 JM |
3286 | |
3287 | while (*promptp != '\0') | |
3288 | { | |
3289 | int available = MAX_PROMPT_SIZE - (outp - formatted_prompt) - 1; | |
3290 | ||
3291 | if (*promptp != gdb_prompt_escape) | |
3292 | { | |
c5aa993b | 3293 | if (available >= 1) /* overflow protect */ |
9e0b60a8 JM |
3294 | *outp++ = *promptp++; |
3295 | } | |
3296 | else | |
3297 | { | |
3298 | /* GDB prompt string contains escape char. Parse for arg. | |
c5aa993b JM |
3299 | Two consecutive escape chars followed by arg followed by |
3300 | a comma means to insert the arg using a default format. | |
3301 | Otherwise a printf format string may be included between | |
3302 | the two escape chars. eg: | |
3303 | %%foo, insert foo using default format | |
3304 | %2.2f%foo, insert foo using "%2.2f" format | |
3305 | A mismatch between the format string and the data type | |
3306 | of "foo" is an error (which we don't know how to protect | |
3307 | against). */ | |
9e0b60a8 JM |
3308 | |
3309 | fmt[0] = '\0'; /* assume null format string */ | |
3310 | if (promptp[1] == gdb_prompt_escape) /* double esc char */ | |
3311 | { | |
3312 | promptp += 2; /* skip past two escape chars. */ | |
3313 | } | |
3314 | else | |
3315 | { | |
3316 | /* extract format string from between two esc chars */ | |
3317 | i = 0; | |
c5aa993b JM |
3318 | do |
3319 | { | |
3320 | fmt[i++] = *promptp++; /* copy format string */ | |
3321 | } | |
3322 | while (i < sizeof (fmt) - 1 && | |
3323 | *promptp != gdb_prompt_escape && | |
3324 | *promptp != '\0'); | |
9e0b60a8 JM |
3325 | |
3326 | if (*promptp != gdb_prompt_escape) | |
3327 | error ("Syntax error at prompt position %d", | |
3328 | promptp - local_prompt); | |
3329 | else | |
3330 | { | |
3331 | promptp++; /* skip second escape char */ | |
3332 | fmt[i++] = '\0'; /* terminate the format string */ | |
3333 | } | |
3334 | } | |
3335 | ||
3336 | arg_val = parse_to_comma_and_eval (&promptp); | |
3337 | if (*promptp == ',') | |
c5aa993b | 3338 | promptp++; /* skip past the comma */ |
9e0b60a8 | 3339 | arg_type = check_typedef (VALUE_TYPE (arg_val)); |
c5aa993b | 3340 | switch (TYPE_CODE (arg_type)) |
9e0b60a8 JM |
3341 | { |
3342 | case TYPE_CODE_ARRAY: | |
3343 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
c5aa993b | 3344 | if (TYPE_LENGTH (arg_type) > 0 && |
9e0b60a8 JM |
3345 | TYPE_LENGTH (elt_type) == 1 && |
3346 | TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
3347 | { | |
3348 | int len = TYPE_LENGTH (arg_type); | |
3349 | ||
3350 | if (VALUE_LAZY (arg_val)) | |
3351 | value_fetch_lazy (arg_val); | |
3352 | tmp = VALUE_CONTENTS (arg_val); | |
3353 | ||
3354 | if (len > available) | |
c5aa993b | 3355 | len = available; /* overflow protect */ |
9e0b60a8 JM |
3356 | |
3357 | /* FIXME: how to protect GDB from crashing | |
c5aa993b | 3358 | from bad user-supplied format string? */ |
9e0b60a8 JM |
3359 | if (fmt[0] != 0) |
3360 | sprintf (outp, fmt, tmp); | |
3361 | else | |
3362 | strncpy (outp, tmp, len); | |
3363 | outp[len] = '\0'; | |
3364 | } | |
3365 | break; | |
3366 | case TYPE_CODE_PTR: | |
3367 | elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type)); | |
3368 | addrval = value_as_pointer (arg_val); | |
3369 | ||
3370 | if (TYPE_LENGTH (elt_type) == 1 && | |
c5aa993b | 3371 | TYPE_CODE (elt_type) == TYPE_CODE_INT && |
9e0b60a8 JM |
3372 | addrval != 0) |
3373 | { | |
3374 | /* display it as a string */ | |
3375 | char *default_fmt = "%s"; | |
3376 | char *tmp; | |
3377 | int err = 0; | |
3378 | ||
3379 | /* Limiting the number of bytes that the following call | |
c5aa993b JM |
3380 | will read protects us from sprintf overflow later. */ |
3381 | i = target_read_string (addrval, /* src */ | |
3382 | &tmp, /* dest */ | |
3383 | available, /* len */ | |
9e0b60a8 JM |
3384 | &err); |
3385 | if (err) /* read failed */ | |
3386 | error ("%s on target_read", safe_strerror (err)); | |
3387 | ||
3388 | tmp[i] = '\0'; /* force-terminate string */ | |
3389 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
3390 | from bad user-supplied format string? */ |
3391 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, | |
9e0b60a8 JM |
3392 | tmp); |
3393 | free (tmp); | |
3394 | } | |
3395 | else | |
3396 | { | |
3397 | /* display it as a pointer */ | |
3398 | char *default_fmt = "0x%x"; | |
3399 | ||
3400 | /* FIXME: how to protect GDB from crashing | |
c5aa993b JM |
3401 | from bad user-supplied format string? */ |
3402 | if (available >= 16 /*? */ ) /* overflow protect */ | |
9e0b60a8 JM |
3403 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3404 | (long) addrval); | |
3405 | } | |
3406 | break; | |
3407 | case TYPE_CODE_FLT: | |
3408 | { | |
3409 | char *default_fmt = "%g"; | |
3410 | ||
3411 | doubleval = value_as_double (arg_val); | |
3412 | /* FIXME: how to protect GDB from crashing | |
3413 | from bad user-supplied format string? */ | |
c5aa993b | 3414 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3415 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3416 | (double) doubleval); | |
3417 | break; | |
3418 | } | |
3419 | case TYPE_CODE_INT: | |
3420 | { | |
3421 | char *default_fmt = "%d"; | |
3422 | ||
3423 | longval = value_as_long (arg_val); | |
3424 | /* FIXME: how to protect GDB from crashing | |
3425 | from bad user-supplied format string? */ | |
c5aa993b | 3426 | if (available >= 16 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3427 | sprintf (outp, fmt[0] == 0 ? default_fmt : fmt, |
3428 | (long) longval); | |
3429 | break; | |
3430 | } | |
3431 | case TYPE_CODE_BOOL: | |
3432 | { | |
3433 | /* no default format for bool */ | |
3434 | longval = value_as_long (arg_val); | |
c5aa993b | 3435 | if (available >= 8 /*? */ ) /* overflow protect */ |
9e0b60a8 JM |
3436 | { |
3437 | if (longval) | |
3438 | strcpy (outp, "<true>"); | |
3439 | else | |
3440 | strcpy (outp, "<false>"); | |
3441 | } | |
3442 | break; | |
3443 | } | |
3444 | case TYPE_CODE_ENUM: | |
3445 | { | |
3446 | /* no default format for enum */ | |
3447 | longval = value_as_long (arg_val); | |
3448 | len = TYPE_NFIELDS (arg_type); | |
3449 | /* find enum name if possible */ | |
3450 | for (i = 0; i < len; i++) | |
3451 | if (TYPE_FIELD_BITPOS (arg_type, i) == longval) | |
c5aa993b | 3452 | break; /* match -- end loop */ |
9e0b60a8 JM |
3453 | |
3454 | if (i < len) /* enum name found */ | |
3455 | { | |
3456 | char *name = TYPE_FIELD_NAME (arg_type, i); | |
3457 | ||
3458 | strncpy (outp, name, available); | |
3459 | /* in casel available < strlen (name), */ | |
3460 | outp[available] = '\0'; | |
3461 | } | |
3462 | else | |
3463 | { | |
c5aa993b | 3464 | if (available >= 16 /*? */ ) /* overflow protect */ |
d4f3574e | 3465 | sprintf (outp, "%ld", (long) longval); |
9e0b60a8 JM |
3466 | } |
3467 | break; | |
3468 | } | |
3469 | case TYPE_CODE_VOID: | |
3470 | *outp = '\0'; | |
3471 | break; /* void type -- no output */ | |
3472 | default: | |
3473 | error ("bad data type at prompt position %d", | |
3474 | promptp - local_prompt); | |
3475 | break; | |
3476 | } | |
3477 | outp += strlen (outp); | |
3478 | } | |
3479 | } | |
3480 | *outp++ = '\0'; /* terminate prompt string */ | |
3481 | return 1; | |
3482 | } | |
3483 | } | |
3484 | ||
3485 | char * | |
3486 | get_prompt () | |
3487 | { | |
3488 | static char buf[MAX_PROMPT_SIZE]; | |
3489 | ||
c5aa993b | 3490 | if (catch_errors (get_prompt_1, buf, "bad formatted prompt: ", |
9e0b60a8 JM |
3491 | RETURN_MASK_ALL)) |
3492 | { | |
c5aa993b | 3493 | return &buf[0]; /* successful formatted prompt */ |
9e0b60a8 JM |
3494 | } |
3495 | else | |
3496 | { | |
3497 | /* Prompt could not be formatted. */ | |
6426a772 | 3498 | if (event_loop_p) |
9e0b60a8 JM |
3499 | return PROMPT (0); |
3500 | else | |
3501 | return gdb_prompt_string; | |
3502 | } | |
3503 | } | |
3504 | ||
3505 | void | |
3506 | set_prompt (s) | |
3507 | char *s; | |
3508 | { | |
3509 | /* ??rehrauer: I don't know why this fails, since it looks as though | |
3510 | assignments to prompt are wrapped in calls to savestring... | |
c5aa993b JM |
3511 | if (prompt != NULL) |
3512 | free (prompt); | |
3513 | */ | |
6426a772 | 3514 | if (event_loop_p) |
9e0b60a8 JM |
3515 | PROMPT (0) = savestring (s, strlen (s)); |
3516 | else | |
3517 | gdb_prompt_string = savestring (s, strlen (s)); | |
3518 | } | |
9e0b60a8 | 3519 | \f |
c5aa993b | 3520 | |
9e0b60a8 JM |
3521 | /* If necessary, make the user confirm that we should quit. Return |
3522 | non-zero if we should quit, zero if we shouldn't. */ | |
3523 | ||
3524 | int | |
3525 | quit_confirm () | |
3526 | { | |
3527 | if (inferior_pid != 0 && target_has_execution) | |
3528 | { | |
3529 | char *s; | |
3530 | ||
3531 | /* This is something of a hack. But there's no reliable way to | |
c5aa993b JM |
3532 | see if a GUI is running. The `use_windows' variable doesn't |
3533 | cut it. */ | |
9e0b60a8 JM |
3534 | if (init_ui_hook) |
3535 | s = "A debugging session is active.\nDo you still want to close the debugger?"; | |
3536 | else if (attach_flag) | |
3537 | s = "The program is running. Quit anyway (and detach it)? "; | |
3538 | else | |
3539 | s = "The program is running. Exit anyway? "; | |
3540 | ||
c5aa993b | 3541 | if (!query (s)) |
9e0b60a8 JM |
3542 | return 0; |
3543 | } | |
3544 | ||
3545 | return 1; | |
3546 | } | |
3547 | ||
3548 | /* Quit without asking for confirmation. */ | |
3549 | ||
3550 | void | |
3551 | quit_force (args, from_tty) | |
3552 | char *args; | |
3553 | int from_tty; | |
3554 | { | |
3555 | int exit_code = 0; | |
3556 | ||
3557 | /* An optional expression may be used to cause gdb to terminate with the | |
3558 | value of that expression. */ | |
3559 | if (args) | |
3560 | { | |
3561 | value_ptr val = parse_and_eval (args); | |
3562 | ||
3563 | exit_code = (int) value_as_long (val); | |
3564 | } | |
3565 | ||
3566 | if (inferior_pid != 0 && target_has_execution) | |
3567 | { | |
3568 | if (attach_flag) | |
3569 | target_detach (args, from_tty); | |
3570 | else | |
3571 | target_kill (); | |
3572 | } | |
3573 | ||
3574 | /* UDI wants this, to kill the TIP. */ | |
3575 | target_close (1); | |
3576 | ||
3577 | /* Save the history information if it is appropriate to do so. */ | |
3578 | if (write_history_p && history_filename) | |
3579 | write_history (history_filename); | |
3580 | ||
c5aa993b | 3581 | do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */ |
9e0b60a8 JM |
3582 | |
3583 | #if defined(TUI) | |
3584 | /* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */ | |
3585 | /* The above does not need to be inside a tuiDo(), since | |
3586 | * it is not manipulating the curses screen, but rather, | |
3587 | * it is tearing it down. | |
3588 | */ | |
3589 | if (tui_version) | |
c5aa993b | 3590 | tuiCleanUp (); |
9e0b60a8 JM |
3591 | #endif |
3592 | ||
3593 | exit (exit_code); | |
3594 | } | |
3595 | ||
3596 | /* Handle the quit command. */ | |
3597 | ||
3598 | void | |
3599 | quit_command (args, from_tty) | |
3600 | char *args; | |
3601 | int from_tty; | |
3602 | { | |
c5aa993b | 3603 | if (!quit_confirm ()) |
9e0b60a8 JM |
3604 | error ("Not confirmed."); |
3605 | quit_force (args, from_tty); | |
3606 | } | |
3607 | ||
3608 | /* Returns whether GDB is running on a terminal and whether the user | |
3609 | desires that questions be asked of them on that terminal. */ | |
3610 | ||
3611 | int | |
3612 | input_from_terminal_p () | |
3613 | { | |
3614 | return gdb_has_a_terminal () && (instream == stdin) & caution; | |
3615 | } | |
3616 | \f | |
3617 | /* ARGSUSED */ | |
3618 | static void | |
3619 | pwd_command (args, from_tty) | |
3620 | char *args; | |
3621 | int from_tty; | |
3622 | { | |
c5aa993b JM |
3623 | if (args) |
3624 | error ("The \"pwd\" command does not take an argument: %s", args); | |
9e0b60a8 JM |
3625 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
3626 | ||
3627 | if (!STREQ (gdb_dirbuf, current_directory)) | |
3628 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", | |
c5aa993b | 3629 | current_directory, gdb_dirbuf); |
9e0b60a8 JM |
3630 | else |
3631 | printf_unfiltered ("Working directory %s.\n", current_directory); | |
3632 | } | |
3633 | ||
3634 | void | |
3635 | cd_command (dir, from_tty) | |
3636 | char *dir; | |
3637 | int from_tty; | |
3638 | { | |
3639 | int len; | |
3640 | /* Found something other than leading repetitions of "/..". */ | |
3641 | int found_real_path; | |
3642 | char *p; | |
3643 | ||
3644 | /* If the new directory is absolute, repeat is a no-op; if relative, | |
3645 | repeat might be useful but is more likely to be a mistake. */ | |
3646 | dont_repeat (); | |
3647 | ||
3648 | if (dir == 0) | |
3649 | error_no_arg ("new working directory"); | |
3650 | ||
3651 | dir = tilde_expand (dir); | |
3652 | make_cleanup (free, dir); | |
3653 | ||
3654 | if (chdir (dir) < 0) | |
3655 | perror_with_name (dir); | |
3656 | ||
a0b3c4fd JM |
3657 | #if defined(_WIN32) || defined(__MSDOS__) |
3658 | /* There's too much mess with DOSish names like "d:", "d:.", | |
3659 | "d:./foo" etc. Instead of having lots of special #ifdef'ed code, | |
3660 | simply get the canonicalized name of the current directory. */ | |
3661 | dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); | |
3662 | #endif | |
3663 | ||
9e0b60a8 | 3664 | len = strlen (dir); |
eb2f494a | 3665 | if (SLASH_P (dir[len - 1])) |
a0b3c4fd JM |
3666 | { |
3667 | /* Remove the trailing slash unless this is a root directory | |
eb2f494a AC |
3668 | (including a drive letter on non-Unix systems). */ |
3669 | if (!(len == 1) /* "/" */ | |
a0b3c4fd | 3670 | #if defined(_WIN32) || defined(__MSDOS__) |
eb2f494a | 3671 | && !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */ |
a0b3c4fd JM |
3672 | #endif |
3673 | ) | |
3674 | len--; | |
3675 | } | |
3676 | ||
3677 | dir = savestring (dir, len); | |
c5aa993b | 3678 | if (ROOTED_P (dir)) |
9e0b60a8 JM |
3679 | current_directory = dir; |
3680 | else | |
3681 | { | |
a0b3c4fd | 3682 | if (SLASH_P (current_directory[strlen (current_directory) - 1])) |
9e0b60a8 JM |
3683 | current_directory = concat (current_directory, dir, NULL); |
3684 | else | |
3685 | current_directory = concat (current_directory, SLASH_STRING, dir, NULL); | |
3686 | free (dir); | |
3687 | } | |
3688 | ||
3689 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
3690 | ||
3691 | found_real_path = 0; | |
3692 | for (p = current_directory; *p;) | |
3693 | { | |
3694 | if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2]))) | |
3695 | strcpy (p, p + 2); | |
3696 | else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.' | |
3697 | && (p[3] == 0 || SLASH_P (p[3]))) | |
3698 | { | |
3699 | if (found_real_path) | |
3700 | { | |
3701 | /* Search backwards for the directory just before the "/.." | |
c5aa993b | 3702 | and obliterate it and the "/..". */ |
9e0b60a8 | 3703 | char *q = p; |
c5aa993b | 3704 | while (q != current_directory && !SLASH_P (q[-1])) |
9e0b60a8 JM |
3705 | --q; |
3706 | ||
3707 | if (q == current_directory) | |
3708 | /* current_directory is | |
3709 | a relative pathname ("can't happen"--leave it alone). */ | |
3710 | ++p; | |
3711 | else | |
3712 | { | |
3713 | strcpy (q - 1, p + 3); | |
3714 | p = q - 1; | |
3715 | } | |
3716 | } | |
3717 | else | |
3718 | /* We are dealing with leading repetitions of "/..", for example | |
3719 | "/../..", which is the Mach super-root. */ | |
3720 | p += 3; | |
3721 | } | |
3722 | else | |
3723 | { | |
3724 | found_real_path = 1; | |
3725 | ++p; | |
3726 | } | |
3727 | } | |
3728 | ||
3729 | forget_cached_source_info (); | |
3730 | ||
3731 | if (from_tty) | |
3732 | pwd_command ((char *) 0, 1); | |
3733 | } | |
3734 | \f | |
c5aa993b JM |
3735 | struct source_cleanup_lines_args |
3736 | { | |
9e0b60a8 JM |
3737 | int old_line; |
3738 | char *old_file; | |
3739 | char *old_pre_error; | |
3740 | char *old_error_pre_print; | |
3741 | }; | |
3742 | ||
3743 | static void | |
3744 | source_cleanup_lines (args) | |
3745 | PTR args; | |
3746 | { | |
3747 | struct source_cleanup_lines_args *p = | |
c5aa993b | 3748 | (struct source_cleanup_lines_args *) args; |
9e0b60a8 JM |
3749 | source_line_number = p->old_line; |
3750 | source_file_name = p->old_file; | |
3751 | source_pre_error = p->old_pre_error; | |
3752 | error_pre_print = p->old_error_pre_print; | |
3753 | } | |
3754 | ||
3755 | /* ARGSUSED */ | |
e41a3b1a AC |
3756 | static void |
3757 | do_fclose_cleanup (void *stream) | |
3758 | { | |
3759 | fclose (stream); | |
3760 | } | |
3761 | ||
9e0b60a8 JM |
3762 | void |
3763 | source_command (args, from_tty) | |
3764 | char *args; | |
3765 | int from_tty; | |
3766 | { | |
3767 | FILE *stream; | |
3768 | struct cleanup *old_cleanups; | |
3769 | char *file = args; | |
3770 | struct source_cleanup_lines_args old_lines; | |
3771 | int needed_length; | |
3772 | ||
3773 | if (file == NULL) | |
3774 | { | |
3775 | error ("source command requires pathname of file to source."); | |
3776 | } | |
3777 | ||
3778 | file = tilde_expand (file); | |
3779 | old_cleanups = make_cleanup (free, file); | |
3780 | ||
3781 | stream = fopen (file, FOPEN_RT); | |
3782 | if (!stream) | |
3783 | { | |
3784 | if (from_tty) | |
3785 | perror_with_name (file); | |
3786 | else | |
3787 | return; | |
3788 | } | |
3789 | ||
e41a3b1a | 3790 | make_cleanup (do_fclose_cleanup, stream); |
9e0b60a8 JM |
3791 | |
3792 | old_lines.old_line = source_line_number; | |
3793 | old_lines.old_file = source_file_name; | |
3794 | old_lines.old_pre_error = source_pre_error; | |
3795 | old_lines.old_error_pre_print = error_pre_print; | |
3796 | make_cleanup (source_cleanup_lines, &old_lines); | |
3797 | source_line_number = 0; | |
3798 | source_file_name = file; | |
3799 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
3800 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
3801 | make_cleanup (free, source_pre_error); | |
3802 | /* This will get set every time we read a line. So it won't stay "" for | |
3803 | long. */ | |
3804 | error_pre_print = ""; | |
3805 | ||
3806 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
3807 | if (source_error_allocated < needed_length) | |
3808 | { | |
3809 | source_error_allocated *= 2; | |
3810 | if (source_error_allocated < needed_length) | |
3811 | source_error_allocated = needed_length; | |
3812 | if (source_error == NULL) | |
3813 | source_error = xmalloc (source_error_allocated); | |
3814 | else | |
3815 | source_error = xrealloc (source_error, source_error_allocated); | |
3816 | } | |
3817 | ||
3818 | read_command_file (stream); | |
3819 | ||
3820 | do_cleanups (old_cleanups); | |
3821 | } | |
3822 | ||
3823 | /* ARGSUSED */ | |
3824 | static void | |
3825 | echo_command (text, from_tty) | |
3826 | char *text; | |
3827 | int from_tty; | |
3828 | { | |
3829 | char *p = text; | |
3830 | register int c; | |
3831 | ||
3832 | if (text) | |
3833 | while ((c = *p++) != '\0') | |
3834 | { | |
3835 | if (c == '\\') | |
3836 | { | |
3837 | /* \ at end of argument is used after spaces | |
3838 | so they won't be lost. */ | |
3839 | if (*p == 0) | |
3840 | return; | |
3841 | ||
3842 | c = parse_escape (&p); | |
3843 | if (c >= 0) | |
3844 | printf_filtered ("%c", c); | |
3845 | } | |
3846 | else | |
3847 | printf_filtered ("%c", c); | |
3848 | } | |
3849 | ||
3850 | /* Force this output to appear now. */ | |
3851 | wrap_here (""); | |
3852 | gdb_flush (gdb_stdout); | |
3853 | } | |
3854 | ||
3855 | /* ARGSUSED */ | |
3856 | static void | |
3857 | dont_repeat_command (ignored, from_tty) | |
3858 | char *ignored; | |
3859 | int from_tty; | |
3860 | { | |
c5aa993b JM |
3861 | *line = 0; /* Can't call dont_repeat here because we're not |
3862 | necessarily reading from stdin. */ | |
9e0b60a8 JM |
3863 | } |
3864 | \f | |
3865 | /* Functions to manipulate command line editing control variables. */ | |
3866 | ||
3867 | /* Number of commands to print in each call to show_commands. */ | |
3868 | #define Hist_print 10 | |
3869 | static void | |
3870 | show_commands (args, from_tty) | |
3871 | char *args; | |
3872 | int from_tty; | |
3873 | { | |
3874 | /* Index for history commands. Relative to history_base. */ | |
3875 | int offset; | |
3876 | ||
3877 | /* Number of the history entry which we are planning to display next. | |
3878 | Relative to history_base. */ | |
3879 | static int num = 0; | |
3880 | ||
3881 | /* The first command in the history which doesn't exist (i.e. one more | |
3882 | than the number of the last command). Relative to history_base. */ | |
3883 | int hist_len; | |
3884 | ||
a14ed312 | 3885 | extern HIST_ENTRY *history_get (int); |
9e0b60a8 JM |
3886 | |
3887 | /* Print out some of the commands from the command history. */ | |
3888 | /* First determine the length of the history list. */ | |
3889 | hist_len = history_size; | |
3890 | for (offset = 0; offset < history_size; offset++) | |
3891 | { | |
3892 | if (!history_get (history_base + offset)) | |
3893 | { | |
3894 | hist_len = offset; | |
3895 | break; | |
3896 | } | |
3897 | } | |
3898 | ||
3899 | if (args) | |
3900 | { | |
3901 | if (args[0] == '+' && args[1] == '\0') | |
3902 | /* "info editing +" should print from the stored position. */ | |
3903 | ; | |
3904 | else | |
3905 | /* "info editing <exp>" should print around command number <exp>. */ | |
3906 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
3907 | } | |
3908 | /* "show commands" means print the last Hist_print commands. */ | |
3909 | else | |
3910 | { | |
3911 | num = hist_len - Hist_print; | |
3912 | } | |
3913 | ||
3914 | if (num < 0) | |
3915 | num = 0; | |
3916 | ||
3917 | /* If there are at least Hist_print commands, we want to display the last | |
3918 | Hist_print rather than, say, the last 6. */ | |
3919 | if (hist_len - num < Hist_print) | |
3920 | { | |
3921 | num = hist_len - Hist_print; | |
3922 | if (num < 0) | |
3923 | num = 0; | |
3924 | } | |
3925 | ||
3926 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) | |
3927 | { | |
3928 | printf_filtered ("%5d %s\n", history_base + offset, | |
c5aa993b | 3929 | (history_get (history_base + offset))->line); |
9e0b60a8 JM |
3930 | } |
3931 | ||
3932 | /* The next command we want to display is the next one that we haven't | |
3933 | displayed yet. */ | |
3934 | num += Hist_print; | |
3935 | ||
3936 | /* If the user repeats this command with return, it should do what | |
3937 | "show commands +" does. This is unnecessary if arg is null, | |
3938 | because "show commands +" is not useful after "show commands". */ | |
3939 | if (from_tty && args) | |
3940 | { | |
3941 | args[0] = '+'; | |
3942 | args[1] = '\0'; | |
3943 | } | |
3944 | } | |
3945 | ||
3946 | /* Called by do_setshow_command. */ | |
3947 | /* ARGSUSED */ | |
3948 | static void | |
3949 | set_history_size_command (args, from_tty, c) | |
3950 | char *args; | |
3951 | int from_tty; | |
3952 | struct cmd_list_element *c; | |
3953 | { | |
3954 | if (history_size == INT_MAX) | |
3955 | unstifle_history (); | |
3956 | else if (history_size >= 0) | |
3957 | stifle_history (history_size); | |
3958 | else | |
3959 | { | |
3960 | history_size = INT_MAX; | |
3961 | error ("History size must be non-negative"); | |
3962 | } | |
3963 | } | |
3964 | ||
3965 | /* ARGSUSED */ | |
3966 | static void | |
3967 | set_history (args, from_tty) | |
3968 | char *args; | |
3969 | int from_tty; | |
3970 | { | |
3971 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); | |
3972 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
3973 | } | |
3974 | ||
3975 | /* ARGSUSED */ | |
3976 | static void | |
3977 | show_history (args, from_tty) | |
3978 | char *args; | |
3979 | int from_tty; | |
3980 | { | |
3981 | cmd_show_list (showhistlist, from_tty, ""); | |
3982 | } | |
3983 | ||
3984 | int info_verbose = 0; /* Default verbose msgs off */ | |
3985 | ||
3986 | /* Called by do_setshow_command. An elaborate joke. */ | |
3987 | /* ARGSUSED */ | |
3988 | static void | |
3989 | set_verbose (args, from_tty, c) | |
3990 | char *args; | |
3991 | int from_tty; | |
3992 | struct cmd_list_element *c; | |
3993 | { | |
3994 | char *cmdname = "verbose"; | |
3995 | struct cmd_list_element *showcmd; | |
3996 | ||
3997 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
3998 | ||
3999 | if (info_verbose) | |
4000 | { | |
4001 | c->doc = "Set verbose printing of informational messages."; | |
4002 | showcmd->doc = "Show verbose printing of informational messages."; | |
4003 | } | |
4004 | else | |
4005 | { | |
4006 | c->doc = "Set verbosity."; | |
4007 | showcmd->doc = "Show verbosity."; | |
4008 | } | |
4009 | } | |
4010 | ||
4011 | static void | |
4012 | float_handler (signo) | |
c5aa993b | 4013 | int signo; |
9e0b60a8 JM |
4014 | { |
4015 | /* This message is based on ANSI C, section 4.7. Note that integer | |
4016 | divide by zero causes this, so "float" is a misnomer. */ | |
4017 | signal (SIGFPE, float_handler); | |
4018 | error ("Erroneous arithmetic operation."); | |
4019 | } | |
5d161b24 DB |
4020 | |
4021 | static void | |
4022 | set_debug (arg, from_tty) | |
eb2f494a AC |
4023 | char *arg; |
4024 | int from_tty; | |
5d161b24 | 4025 | { |
eb2f494a AC |
4026 | printf_unfiltered ("\"set debug\" must be followed by the name of a print subcommand.\n"); |
4027 | help_list (setdebuglist, "set debug ", -1, gdb_stdout); | |
5d161b24 DB |
4028 | } |
4029 | ||
4030 | static void | |
4031 | show_debug (args, from_tty) | |
eb2f494a AC |
4032 | char *args; |
4033 | int from_tty; | |
5d161b24 | 4034 | { |
eb2f494a | 4035 | cmd_show_list (showdebuglist, from_tty, ""); |
5d161b24 | 4036 | } |
c5aa993b | 4037 | |
9e0b60a8 JM |
4038 | static void |
4039 | init_cmd_lists () | |
4040 | { | |
4041 | cmdlist = NULL; | |
4042 | infolist = NULL; | |
4043 | enablelist = NULL; | |
4044 | disablelist = NULL; | |
4045 | togglelist = NULL; | |
4046 | stoplist = NULL; | |
4047 | deletelist = NULL; | |
4048 | enablebreaklist = NULL; | |
4049 | setlist = NULL; | |
4050 | unsetlist = NULL; | |
4051 | showlist = NULL; | |
4052 | sethistlist = NULL; | |
4053 | showhistlist = NULL; | |
4054 | unsethistlist = NULL; | |
4055 | maintenancelist = NULL; | |
4056 | maintenanceinfolist = NULL; | |
4057 | maintenanceprintlist = NULL; | |
4058 | setprintlist = NULL; | |
4059 | showprintlist = NULL; | |
4060 | setchecklist = NULL; | |
4061 | showchecklist = NULL; | |
4062 | } | |
4063 | ||
4064 | /* Init the history buffer. Note that we are called after the init file(s) | |
4065 | * have been read so that the user can change the history file via his | |
4066 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
4067 | * overrides all of this. | |
4068 | */ | |
4069 | ||
4070 | void | |
c5aa993b | 4071 | init_history () |
9e0b60a8 JM |
4072 | { |
4073 | char *tmpenv; | |
4074 | ||
4075 | tmpenv = getenv ("HISTSIZE"); | |
4076 | if (tmpenv) | |
4077 | history_size = atoi (tmpenv); | |
4078 | else if (!history_size) | |
4079 | history_size = 256; | |
4080 | ||
4081 | stifle_history (history_size); | |
4082 | ||
4083 | tmpenv = getenv ("GDBHISTFILE"); | |
4084 | if (tmpenv) | |
c5aa993b JM |
4085 | history_filename = savestring (tmpenv, strlen (tmpenv)); |
4086 | else if (!history_filename) | |
4087 | { | |
4088 | /* We include the current directory so that if the user changes | |
4089 | directories the file written will be the same as the one | |
4090 | that was read. */ | |
a0b3c4fd | 4091 | #ifdef __MSDOS__ |
eb2f494a AC |
4092 | /* No leading dots in file names are allowed on MSDOS. */ |
4093 | history_filename = concat (current_directory, "/_gdb_history", NULL); | |
a0b3c4fd | 4094 | #else |
c5aa993b | 4095 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
a0b3c4fd | 4096 | #endif |
c5aa993b | 4097 | } |
9e0b60a8 JM |
4098 | read_history (history_filename); |
4099 | } | |
4100 | ||
4101 | static void | |
4102 | init_main () | |
4103 | { | |
4104 | struct cmd_list_element *c; | |
4105 | ||
4106 | /* If we are running the asynchronous version, | |
4107 | we initialize the prompts differently. */ | |
6426a772 | 4108 | if (!event_loop_p) |
9e0b60a8 | 4109 | { |
c5aa993b | 4110 | gdb_prompt_string = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
9e0b60a8 JM |
4111 | } |
4112 | else | |
4113 | { | |
4114 | /* initialize the prompt stack to a simple "(gdb) " prompt or to | |
96baa820 | 4115 | whatever the DEFAULT_PROMPT is. */ |
9e0b60a8 | 4116 | the_prompts.top = 0; |
c5aa993b | 4117 | PREFIX (0) = ""; |
c5aa993b | 4118 | PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT)); |
c5aa993b | 4119 | SUFFIX (0) = ""; |
9e0b60a8 | 4120 | /* Set things up for annotation_level > 1, if the user ever decides |
c5aa993b | 4121 | to use it. */ |
9e0b60a8 JM |
4122 | async_annotation_suffix = "prompt"; |
4123 | /* Set the variable associated with the setshow prompt command. */ | |
4124 | new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0))); | |
4125 | } | |
4126 | gdb_prompt_escape = 0; /* default to none. */ | |
4127 | ||
4128 | /* Set the important stuff up for command editing. */ | |
4129 | command_editing_p = 1; | |
9e0b60a8 JM |
4130 | history_expansion_p = 0; |
4131 | write_history_p = 0; | |
4132 | ||
4133 | /* Setup important stuff for command line editing. */ | |
4134 | rl_completion_entry_function = (int (*)()) readline_line_completion_function; | |
4135 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
4136 | rl_completer_quote_characters = gdb_completer_quote_characters; | |
4137 | rl_readline_name = "gdb"; | |
4138 | ||
4139 | /* Define the classes of commands. | |
4140 | They will appear in the help list in the reverse of this order. */ | |
4141 | ||
4142 | add_cmd ("internals", class_maintenance, NO_FUNCTION, | |
4143 | "Maintenance commands.\n\ | |
4144 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
4145 | These commands are subject to frequent change, and may not be as\n\ | |
4146 | well documented as user commands.", | |
4147 | &cmdlist); | |
4148 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); | |
4149 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
4150 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
4151 | The commands in this class are those defined by the user.\n\ | |
4152 | Use the \"define\" command to define a command.", &cmdlist); | |
4153 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
4154 | if (!dbx_commands) | |
4155 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
4156 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
4157 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
4158 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
4159 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
4160 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
4161 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
4162 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
4163 | Variable lookups are done with respect to the selected frame.\n\ | |
4164 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
4165 | The commands below can be used to select other frames by number or address.", | |
4166 | &cmdlist); | |
4167 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
4168 | ||
4169 | add_com ("pwd", class_files, pwd_command, | |
c5aa993b | 4170 | "Print working directory. This is used for your program as well."); |
9e0b60a8 | 4171 | c = add_cmd ("cd", class_files, cd_command, |
c5aa993b | 4172 | "Set working directory to DIR for debugger and program being debugged.\n\ |
9e0b60a8 JM |
4173 | The change does not take effect for the program being debugged\n\ |
4174 | until the next time it is started.", &cmdlist); | |
4175 | c->completer = filename_completer; | |
4176 | ||
4177 | /* The set prompt command is different depending whether or not the | |
4178 | async version is run. NOTE: this difference is going to | |
4179 | disappear as we make the event loop be the default engine of | |
4180 | gdb. */ | |
6426a772 | 4181 | if (!event_loop_p) |
9e0b60a8 JM |
4182 | { |
4183 | add_show_from_set | |
c5aa993b | 4184 | (add_set_cmd ("prompt", class_support, var_string, |
9e0b60a8 JM |
4185 | (char *) &gdb_prompt_string, "Set gdb's prompt", |
4186 | &setlist), | |
4187 | &showlist); | |
4188 | } | |
4189 | else | |
4190 | { | |
c5aa993b JM |
4191 | c = add_set_cmd ("prompt", class_support, var_string, |
4192 | (char *) &new_async_prompt, "Set gdb's prompt", | |
9e0b60a8 JM |
4193 | &setlist); |
4194 | add_show_from_set (c, &showlist); | |
4195 | c->function.sfunc = set_async_prompt; | |
4196 | } | |
4197 | ||
4198 | add_show_from_set | |
c5aa993b | 4199 | (add_set_cmd ("prompt-escape-char", class_support, var_zinteger, |
9e0b60a8 JM |
4200 | (char *) &gdb_prompt_escape, |
4201 | "Set escape character for formatting of gdb's prompt", | |
4202 | &setlist), | |
4203 | &showlist); | |
4204 | ||
4205 | add_com ("echo", class_support, echo_command, | |
4206 | "Print a constant string. Give string as argument.\n\ | |
4207 | C escape sequences may be used in the argument.\n\ | |
4208 | No newline is added at the end of the argument;\n\ | |
4209 | use \"\\n\" if you want a newline to be printed.\n\ | |
4210 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
4211 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
4212 | to be printed or after trailing whitespace."); | |
4213 | add_com ("document", class_support, document_command, | |
4214 | "Document a user-defined command.\n\ | |
4215 | Give command name as argument. Give documentation on following lines.\n\ | |
4216 | End with a line of just \"end\"."); | |
4217 | add_com ("define", class_support, define_command, | |
4218 | "Define a new command name. Command name is argument.\n\ | |
4219 | Definition appears on following lines, one command per line.\n\ | |
4220 | End with a line of just \"end\".\n\ | |
4221 | Use the \"document\" command to give documentation for the new command.\n\ | |
4222 | Commands defined in this way may have up to ten arguments."); | |
4223 | ||
4224 | #ifdef __STDC__ | |
4225 | c = add_cmd ("source", class_support, source_command, | |
c5aa993b | 4226 | "Read commands from a file named FILE.\n\ |
9e0b60a8 JM |
4227 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ |
4228 | when gdb is started.", &cmdlist); | |
4229 | #else | |
4230 | /* Punt file name, we can't help it easily. */ | |
4231 | c = add_cmd ("source", class_support, source_command, | |
c5aa993b | 4232 | "Read commands from a file named FILE.\n\ |
9e0b60a8 JM |
4233 | Note that the file \".gdbinit\" is read automatically in this way\n\ |
4234 | when gdb is started.", &cmdlist); | |
4235 | #endif | |
4236 | c->completer = filename_completer; | |
4237 | ||
4238 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
4239 | add_com ("help", class_support, help_command, "Print list of commands."); | |
4240 | add_com_alias ("q", "quit", class_support, 1); | |
4241 | add_com_alias ("h", "help", class_support, 1); | |
4242 | ||
4243 | add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\ | |
4244 | Primarily used inside of user-defined commands that should not be repeated when\n\ | |
4245 | hitting return."); | |
4246 | ||
c5aa993b | 4247 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *) &info_verbose, |
9e0b60a8 JM |
4248 | "Set ", |
4249 | &setlist), | |
c5aa993b | 4250 | add_show_from_set (c, &showlist); |
9e0b60a8 JM |
4251 | c->function.sfunc = set_verbose; |
4252 | set_verbose (NULL, 0, c); | |
4253 | ||
4254 | /* The set editing command is different depending whether or not the | |
4255 | async version is run. NOTE: this difference is going to disappear | |
4256 | as we make the event loop be the default engine of gdb. */ | |
6426a772 | 4257 | if (!event_loop_p) |
9e0b60a8 JM |
4258 | { |
4259 | add_show_from_set | |
c5aa993b | 4260 | (add_set_cmd ("editing", class_support, var_boolean, (char *) &command_editing_p, |
9e0b60a8 JM |
4261 | "Set editing of command lines as they are typed.\n\ |
4262 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
4263 | Without an argument, command line editing is enabled. To edit, use\n\ | |
4264 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
4265 | &showlist); | |
4266 | } | |
4267 | else | |
4268 | { | |
c5aa993b | 4269 | c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p, |
9e0b60a8 JM |
4270 | "Set editing of command lines as they are typed.\n\ |
4271 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
4272 | Without an argument, command line editing is enabled. To edit, use\n\ | |
4273 | EMACS-like or VI-like commands like control-P or ESC.", &setlist); | |
4274 | ||
4275 | add_show_from_set (c, &showlist); | |
4276 | c->function.sfunc = set_async_editing_command; | |
4277 | } | |
4278 | ||
4279 | add_prefix_cmd ("history", class_support, set_history, | |
4280 | "Generic command for setting command history parameters.", | |
4281 | &sethistlist, "set history ", 0, &setlist); | |
4282 | add_prefix_cmd ("history", class_support, show_history, | |
4283 | "Generic command for showing command history parameters.", | |
4284 | &showhistlist, "show history ", 0, &showlist); | |
4285 | ||
4286 | add_show_from_set | |
c5aa993b JM |
4287 | (add_set_cmd ("expansion", no_class, var_boolean, (char *) &history_expansion_p, |
4288 | "Set history expansion on command input.\n\ | |
9e0b60a8 JM |
4289 | Without an argument, history expansion is enabled.", &sethistlist), |
4290 | &showhistlist); | |
4291 | ||
4292 | add_show_from_set | |
c5aa993b JM |
4293 | (add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p, |
4294 | "Set saving of the history record on exit.\n\ | |
9e0b60a8 JM |
4295 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ |
4296 | Without an argument, saving is enabled.", &sethistlist), | |
4297 | &showhistlist); | |
4298 | ||
c5aa993b | 4299 | c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size, |
9e0b60a8 JM |
4300 | "Set the size of the command history, \n\ |
4301 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
4302 | add_show_from_set (c, &showhistlist); | |
4303 | c->function.sfunc = set_history_size_command; | |
4304 | ||
4305 | add_show_from_set | |
c5aa993b JM |
4306 | (add_set_cmd ("filename", no_class, var_filename, (char *) &history_filename, |
4307 | "Set the filename in which to record the command history\n\ | |
9e0b60a8 JM |
4308 | (the list of previous commands of which a record is kept).", &sethistlist), |
4309 | &showhistlist); | |
4310 | ||
4311 | add_show_from_set | |
4312 | (add_set_cmd ("confirm", class_support, var_boolean, | |
c5aa993b | 4313 | (char *) &caution, |
9e0b60a8 JM |
4314 | "Set whether to confirm potentially dangerous operations.", |
4315 | &setlist), | |
4316 | &showlist); | |
4317 | ||
4318 | add_prefix_cmd ("info", class_info, info_command, | |
c5aa993b | 4319 | "Generic command for showing things about the program being debugged.", |
9e0b60a8 JM |
4320 | &infolist, "info ", 0, &cmdlist); |
4321 | add_com_alias ("i", "info", class_info, 1); | |
4322 | ||
4323 | add_com ("complete", class_obscure, complete_command, | |
4324 | "List the completions for the rest of the line as a command."); | |
4325 | ||
4326 | add_prefix_cmd ("show", class_info, show_command, | |
4327 | "Generic command for showing things about the debugger.", | |
4328 | &showlist, "show ", 0, &cmdlist); | |
4329 | /* Another way to get at the same thing. */ | |
4330 | add_info ("set", show_command, "Show all GDB settings."); | |
4331 | ||
4332 | add_cmd ("commands", no_class, show_commands, | |
4333 | "Show the history of commands you typed.\n\ | |
4334 | You can supply a command number to start with, or a `+' to start after\n\ | |
4335 | the previous command number shown.", | |
4336 | &showlist); | |
4337 | ||
4338 | add_cmd ("version", no_class, show_version, | |
4339 | "Show what version of GDB this is.", &showlist); | |
4340 | ||
4341 | add_com ("while", class_support, while_command, | |
c5aa993b | 4342 | "Execute nested commands WHILE the conditional expression is non zero.\n\ |
9e0b60a8 JM |
4343 | The conditional expression must follow the word `while' and must in turn be\n\ |
4344 | followed by a new line. The nested commands must be entered one per line,\n\ | |
4345 | and should be terminated by the word `end'."); | |
4346 | ||
4347 | add_com ("if", class_support, if_command, | |
c5aa993b | 4348 | "Execute nested commands once IF the conditional expression is non zero.\n\ |
9e0b60a8 JM |
4349 | The conditional expression must follow the word `if' and must in turn be\n\ |
4350 | followed by a new line. The nested commands must be entered one per line,\n\ | |
4351 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
4352 | is used, the same rules apply to its nested commands as to the first ones."); | |
4353 | ||
4354 | /* If target is open when baud changes, it doesn't take effect until the | |
4355 | next open (I think, not sure). */ | |
4356 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
c5aa993b | 4357 | var_zinteger, (char *) &baud_rate, |
9e0b60a8 JM |
4358 | "Set baud rate for remote serial I/O.\n\ |
4359 | This value is used to set the speed of the serial port when debugging\n\ | |
4360 | using remote targets.", &setlist), | |
4361 | &showlist); | |
4362 | ||
eb2f494a AC |
4363 | c = add_set_cmd ("remotedebug", no_class, var_zinteger, |
4364 | (char *) &remote_debug, | |
4365 | "Set debugging of remote protocol.\n\ | |
5d161b24 | 4366 | When enabled, each packet sent or received with the remote target\n\ |
eb2f494a AC |
4367 | is displayed.", &setlist); |
4368 | deprecate_cmd (c, "set debug remote"); | |
4369 | deprecate_cmd (add_show_from_set (c, &showlist), "show debug remote"); | |
5d161b24 | 4370 | |
eb2f494a AC |
4371 | add_show_from_set (add_set_cmd ("remote", no_class, var_zinteger, |
4372 | (char *) &remote_debug, | |
4373 | "Set debugging of remote protocol.\n\ | |
9e0b60a8 | 4374 | When enabled, each packet sent or received with the remote target\n\ |
5d161b24 | 4375 | is displayed.", &setdebuglist), |
eb2f494a | 4376 | &showdebuglist); |
9e0b60a8 JM |
4377 | |
4378 | add_show_from_set ( | |
c5aa993b JM |
4379 | add_set_cmd ("remotetimeout", no_class, var_integer, (char *) &remote_timeout, |
4380 | "Set timeout limit to wait for target to respond.\n\ | |
9e0b60a8 JM |
4381 | This value is used to set the time limit for gdb to wait for a response\n\ |
4382 | from the target.", &setlist), | |
c5aa993b | 4383 | &showlist); |
9e0b60a8 JM |
4384 | |
4385 | /* The set annotate command is different depending whether or not | |
4386 | the async version is run. NOTE: this difference is going to | |
4387 | disappear as we make the event loop be the default engine of | |
4388 | gdb. */ | |
6426a772 | 4389 | if (!event_loop_p) |
9e0b60a8 | 4390 | { |
c5aa993b JM |
4391 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
4392 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
4393 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
4394 | 2 == output annotated suitably for use by programs that control GDB.", | |
4395 | &setlist); | |
4396 | c = add_show_from_set (c, &showlist); | |
4397 | } | |
4398 | else | |
4399 | { | |
c5aa993b JM |
4400 | c = add_set_cmd ("annotate", class_obscure, var_zinteger, |
4401 | (char *) &annotation_level, "Set annotation_level.\n\ | |
9e0b60a8 JM |
4402 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ |
4403 | 2 == output annotated suitably for use by programs that control GDB.", | |
c5aa993b | 4404 | &setlist); |
9e0b60a8 JM |
4405 | add_show_from_set (c, &showlist); |
4406 | c->function.sfunc = set_async_annotation_level; | |
4407 | } | |
6426a772 | 4408 | if (event_loop_p) |
104c1213 JM |
4409 | { |
4410 | add_show_from_set | |
4411 | (add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p, | |
4412 | "Set notification of completion for asynchronous execution commands.\n\ | |
4413 | Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist), | |
4414 | &showlist); | |
4415 | } | |
eb2f494a AC |
4416 | add_prefix_cmd ("debug", no_class, set_debug, |
4417 | "Generic command for setting gdb debugging flags", | |
4418 | &setdebuglist, "set debug ", 0, &setlist); | |
5d161b24 | 4419 | |
eb2f494a AC |
4420 | add_prefix_cmd ("debug", no_class, show_debug, |
4421 | "Generic command for showing gdb debugging flags", | |
4422 | &showdebuglist, "show debug ", 0, &showlist); | |
9e0b60a8 | 4423 | } |