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1 | /* Memory-access and commands for "inferior" process, for GDB. | |
2 | ||
3 | Copyright (C) 1986-2012 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "arch-utils.h" | |
22 | #include <signal.h> | |
23 | #include "gdb_string.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "frame.h" | |
27 | #include "inferior.h" | |
28 | #include "environ.h" | |
29 | #include "value.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "symfile.h" | |
32 | #include "gdbcore.h" | |
33 | #include "target.h" | |
34 | #include "language.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
37 | #include "completer.h" | |
38 | #include "ui-out.h" | |
39 | #include "event-top.h" | |
40 | #include "parser-defs.h" | |
41 | #include "regcache.h" | |
42 | #include "reggroups.h" | |
43 | #include "block.h" | |
44 | #include "solib.h" | |
45 | #include <ctype.h> | |
46 | #include "gdb_assert.h" | |
47 | #include "observer.h" | |
48 | #include "target-descriptions.h" | |
49 | #include "user-regs.h" | |
50 | #include "exceptions.h" | |
51 | #include "cli/cli-decode.h" | |
52 | #include "gdbthread.h" | |
53 | #include "valprint.h" | |
54 | #include "inline-frame.h" | |
55 | #include "tracepoint.h" | |
56 | #include "inf-loop.h" | |
57 | #include "continuations.h" | |
58 | #include "linespec.h" | |
59 | ||
60 | /* Functions exported for general use, in inferior.h: */ | |
61 | ||
62 | void all_registers_info (char *, int); | |
63 | ||
64 | void registers_info (char *, int); | |
65 | ||
66 | void nexti_command (char *, int); | |
67 | ||
68 | void stepi_command (char *, int); | |
69 | ||
70 | void continue_command (char *, int); | |
71 | ||
72 | void interrupt_target_command (char *args, int from_tty); | |
73 | ||
74 | /* Local functions: */ | |
75 | ||
76 | static void nofp_registers_info (char *, int); | |
77 | ||
78 | static void print_return_value (struct type *func_type, | |
79 | struct type *value_type); | |
80 | ||
81 | static void until_next_command (int); | |
82 | ||
83 | static void until_command (char *, int); | |
84 | ||
85 | static void path_info (char *, int); | |
86 | ||
87 | static void path_command (char *, int); | |
88 | ||
89 | static void unset_command (char *, int); | |
90 | ||
91 | static void float_info (char *, int); | |
92 | ||
93 | static void disconnect_command (char *, int); | |
94 | ||
95 | static void unset_environment_command (char *, int); | |
96 | ||
97 | static void set_environment_command (char *, int); | |
98 | ||
99 | static void environment_info (char *, int); | |
100 | ||
101 | static void program_info (char *, int); | |
102 | ||
103 | static void finish_command (char *, int); | |
104 | ||
105 | static void signal_command (char *, int); | |
106 | ||
107 | static void jump_command (char *, int); | |
108 | ||
109 | static void step_1 (int, int, char *); | |
110 | static void step_once (int skip_subroutines, int single_inst, | |
111 | int count, int thread); | |
112 | ||
113 | static void next_command (char *, int); | |
114 | ||
115 | static void step_command (char *, int); | |
116 | ||
117 | static void run_command (char *, int); | |
118 | ||
119 | static void run_no_args_command (char *args, int from_tty); | |
120 | ||
121 | static void go_command (char *line_no, int from_tty); | |
122 | ||
123 | static int strip_bg_char (char **); | |
124 | ||
125 | void _initialize_infcmd (void); | |
126 | ||
127 | #define ERROR_NO_INFERIOR \ | |
128 | if (!target_has_execution) error (_("The program is not being run.")); | |
129 | ||
130 | /* Scratch area where string containing arguments to give to the | |
131 | program will be stored by 'set args'. As soon as anything is | |
132 | stored, notice_args_set will move it into per-inferior storage. | |
133 | Arguments are separated by spaces. Empty string (pointer to '\0') | |
134 | means no args. */ | |
135 | ||
136 | static char *inferior_args_scratch; | |
137 | ||
138 | /* Scratch area where 'set inferior-tty' will store user-provided value. | |
139 | We'll immediate copy it into per-inferior storage. */ | |
140 | ||
141 | static char *inferior_io_terminal_scratch; | |
142 | ||
143 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
144 | Since various parts of infrun.c test this to see whether there is a program | |
145 | being debugged it should be nonzero (currently 3 is used) for remote | |
146 | debugging. */ | |
147 | ||
148 | ptid_t inferior_ptid; | |
149 | ||
150 | /* Address at which inferior stopped. */ | |
151 | ||
152 | CORE_ADDR stop_pc; | |
153 | ||
154 | /* Flag indicating that a command has proceeded the inferior past the | |
155 | current breakpoint. */ | |
156 | ||
157 | int breakpoint_proceeded; | |
158 | ||
159 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
160 | ||
161 | enum stop_stack_kind stop_stack_dummy; | |
162 | ||
163 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
164 | process. */ | |
165 | ||
166 | int stopped_by_random_signal; | |
167 | ||
168 | \f | |
169 | /* Accessor routines. */ | |
170 | ||
171 | /* Set the io terminal for the current inferior. Ownership of | |
172 | TERMINAL_NAME is not transferred. */ | |
173 | ||
174 | void | |
175 | set_inferior_io_terminal (const char *terminal_name) | |
176 | { | |
177 | xfree (current_inferior ()->terminal); | |
178 | current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0; | |
179 | } | |
180 | ||
181 | const char * | |
182 | get_inferior_io_terminal (void) | |
183 | { | |
184 | return current_inferior ()->terminal; | |
185 | } | |
186 | ||
187 | static void | |
188 | set_inferior_tty_command (char *args, int from_tty, | |
189 | struct cmd_list_element *c) | |
190 | { | |
191 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
192 | Now route it to current inferior. */ | |
193 | set_inferior_io_terminal (inferior_io_terminal_scratch); | |
194 | } | |
195 | ||
196 | static void | |
197 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
198 | struct cmd_list_element *c, const char *value) | |
199 | { | |
200 | /* Note that we ignore the passed-in value in favor of computing it | |
201 | directly. */ | |
202 | const char *inferior_io_terminal = get_inferior_io_terminal (); | |
203 | ||
204 | if (inferior_io_terminal == NULL) | |
205 | inferior_io_terminal = ""; | |
206 | fprintf_filtered (gdb_stdout, | |
207 | _("Terminal for future runs of program being debugged " | |
208 | "is \"%s\".\n"), inferior_io_terminal); | |
209 | } | |
210 | ||
211 | char * | |
212 | get_inferior_args (void) | |
213 | { | |
214 | if (current_inferior ()->argc != 0) | |
215 | { | |
216 | char *n; | |
217 | ||
218 | n = construct_inferior_arguments (current_inferior ()->argc, | |
219 | current_inferior ()->argv); | |
220 | set_inferior_args (n); | |
221 | xfree (n); | |
222 | } | |
223 | ||
224 | if (current_inferior ()->args == NULL) | |
225 | current_inferior ()->args = xstrdup (""); | |
226 | ||
227 | return current_inferior ()->args; | |
228 | } | |
229 | ||
230 | /* Set the arguments for the current inferior. Ownership of | |
231 | NEWARGS is not transferred. */ | |
232 | ||
233 | void | |
234 | set_inferior_args (char *newargs) | |
235 | { | |
236 | xfree (current_inferior ()->args); | |
237 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; | |
238 | current_inferior ()->argc = 0; | |
239 | current_inferior ()->argv = 0; | |
240 | } | |
241 | ||
242 | void | |
243 | set_inferior_args_vector (int argc, char **argv) | |
244 | { | |
245 | current_inferior ()->argc = argc; | |
246 | current_inferior ()->argv = argv; | |
247 | } | |
248 | ||
249 | /* Notice when `set args' is run. */ | |
250 | static void | |
251 | set_args_command (char *args, int from_tty, struct cmd_list_element *c) | |
252 | { | |
253 | /* CLI has assigned the user-provided value to inferior_args_scratch. | |
254 | Now route it to current inferior. */ | |
255 | set_inferior_args (inferior_args_scratch); | |
256 | } | |
257 | ||
258 | /* Notice when `show args' is run. */ | |
259 | static void | |
260 | show_args_command (struct ui_file *file, int from_tty, | |
261 | struct cmd_list_element *c, const char *value) | |
262 | { | |
263 | /* Note that we ignore the passed-in value in favor of computing it | |
264 | directly. */ | |
265 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
266 | } | |
267 | ||
268 | \f | |
269 | /* Compute command-line string given argument vector. This does the | |
270 | same shell processing as fork_inferior. */ | |
271 | char * | |
272 | construct_inferior_arguments (int argc, char **argv) | |
273 | { | |
274 | char *result; | |
275 | ||
276 | if (STARTUP_WITH_SHELL) | |
277 | { | |
278 | /* This holds all the characters considered special to the | |
279 | typical Unix shells. We include `^' because the SunOS | |
280 | /bin/sh treats it as a synonym for `|'. */ | |
281 | char *special = "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n"; | |
282 | int i; | |
283 | int length = 0; | |
284 | char *out, *cp; | |
285 | ||
286 | /* We over-compute the size. It shouldn't matter. */ | |
287 | for (i = 0; i < argc; ++i) | |
288 | length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0'); | |
289 | ||
290 | result = (char *) xmalloc (length); | |
291 | out = result; | |
292 | ||
293 | for (i = 0; i < argc; ++i) | |
294 | { | |
295 | if (i > 0) | |
296 | *out++ = ' '; | |
297 | ||
298 | /* Need to handle empty arguments specially. */ | |
299 | if (argv[i][0] == '\0') | |
300 | { | |
301 | *out++ = '\''; | |
302 | *out++ = '\''; | |
303 | } | |
304 | else | |
305 | { | |
306 | for (cp = argv[i]; *cp; ++cp) | |
307 | { | |
308 | if (*cp == '\n') | |
309 | { | |
310 | /* A newline cannot be quoted with a backslash (it | |
311 | just disappears), only by putting it inside | |
312 | quotes. */ | |
313 | *out++ = '\''; | |
314 | *out++ = '\n'; | |
315 | *out++ = '\''; | |
316 | } | |
317 | else | |
318 | { | |
319 | if (strchr (special, *cp) != NULL) | |
320 | *out++ = '\\'; | |
321 | *out++ = *cp; | |
322 | } | |
323 | } | |
324 | } | |
325 | } | |
326 | *out = '\0'; | |
327 | } | |
328 | else | |
329 | { | |
330 | /* In this case we can't handle arguments that contain spaces, | |
331 | tabs, or newlines -- see breakup_args(). */ | |
332 | int i; | |
333 | int length = 0; | |
334 | ||
335 | for (i = 0; i < argc; ++i) | |
336 | { | |
337 | char *cp = strchr (argv[i], ' '); | |
338 | if (cp == NULL) | |
339 | cp = strchr (argv[i], '\t'); | |
340 | if (cp == NULL) | |
341 | cp = strchr (argv[i], '\n'); | |
342 | if (cp != NULL) | |
343 | error (_("can't handle command-line " | |
344 | "argument containing whitespace")); | |
345 | length += strlen (argv[i]) + 1; | |
346 | } | |
347 | ||
348 | result = (char *) xmalloc (length); | |
349 | result[0] = '\0'; | |
350 | for (i = 0; i < argc; ++i) | |
351 | { | |
352 | if (i > 0) | |
353 | strcat (result, " "); | |
354 | strcat (result, argv[i]); | |
355 | } | |
356 | } | |
357 | ||
358 | return result; | |
359 | } | |
360 | \f | |
361 | ||
362 | /* This function detects whether or not a '&' character (indicating | |
363 | background execution) has been added as *the last* of the arguments ARGS | |
364 | of a command. If it has, it removes it and returns 1. Otherwise it | |
365 | does nothing and returns 0. */ | |
366 | static int | |
367 | strip_bg_char (char **args) | |
368 | { | |
369 | char *p = NULL; | |
370 | ||
371 | p = strchr (*args, '&'); | |
372 | ||
373 | if (p) | |
374 | { | |
375 | if (p == (*args + strlen (*args) - 1)) | |
376 | { | |
377 | if (strlen (*args) > 1) | |
378 | { | |
379 | do | |
380 | p--; | |
381 | while (*p == ' ' || *p == '\t'); | |
382 | *(p + 1) = '\0'; | |
383 | } | |
384 | else | |
385 | *args = 0; | |
386 | return 1; | |
387 | } | |
388 | } | |
389 | return 0; | |
390 | } | |
391 | ||
392 | /* Common actions to take after creating any sort of inferior, by any | |
393 | means (running, attaching, connecting, et cetera). The target | |
394 | should be stopped. */ | |
395 | ||
396 | void | |
397 | post_create_inferior (struct target_ops *target, int from_tty) | |
398 | { | |
399 | volatile struct gdb_exception ex; | |
400 | ||
401 | /* Be sure we own the terminal in case write operations are performed. */ | |
402 | target_terminal_ours (); | |
403 | ||
404 | /* If the target hasn't taken care of this already, do it now. | |
405 | Targets which need to access registers during to_open, | |
406 | to_create_inferior, or to_attach should do it earlier; but many | |
407 | don't need to. */ | |
408 | target_find_description (); | |
409 | ||
410 | /* Now that we know the register layout, retrieve current PC. But | |
411 | if the PC is unavailable (e.g., we're opening a core file with | |
412 | missing registers info), ignore it. */ | |
413 | stop_pc = 0; | |
414 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
415 | { | |
416 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
417 | } | |
418 | if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR) | |
419 | throw_exception (ex); | |
420 | ||
421 | if (exec_bfd) | |
422 | { | |
423 | const unsigned solib_add_generation | |
424 | = current_program_space->solib_add_generation; | |
425 | ||
426 | /* Create the hooks to handle shared library load and unload | |
427 | events. */ | |
428 | #ifdef SOLIB_CREATE_INFERIOR_HOOK | |
429 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
430 | #else | |
431 | solib_create_inferior_hook (from_tty); | |
432 | #endif | |
433 | ||
434 | if (current_program_space->solib_add_generation == solib_add_generation) | |
435 | { | |
436 | /* The platform-specific hook should load initial shared libraries, | |
437 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
438 | targets should be fixed anyway. Call it only after the solib | |
439 | target has been initialized by solib_create_inferior_hook. */ | |
440 | ||
441 | if (info_verbose) | |
442 | warning (_("platform-specific solib_create_inferior_hook did " | |
443 | "not load initial shared libraries.")); | |
444 | ||
445 | /* If the solist is global across processes, there's no need to | |
446 | refetch it here. */ | |
447 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
448 | { | |
449 | #ifdef SOLIB_ADD | |
450 | SOLIB_ADD (NULL, 0, target, auto_solib_add); | |
451 | #else | |
452 | solib_add (NULL, 0, target, auto_solib_add); | |
453 | #endif | |
454 | } | |
455 | } | |
456 | } | |
457 | ||
458 | /* If the user sets watchpoints before execution having started, | |
459 | then she gets software watchpoints, because GDB can't know which | |
460 | target will end up being pushed, or if it supports hardware | |
461 | watchpoints or not. breakpoint_re_set takes care of promoting | |
462 | watchpoints to hardware watchpoints if possible, however, if this | |
463 | new inferior doesn't load shared libraries or we don't pull in | |
464 | symbols from any other source on this target/arch, | |
465 | breakpoint_re_set is never called. Call it now so that software | |
466 | watchpoints get a chance to be promoted to hardware watchpoints | |
467 | if the now pushed target supports hardware watchpoints. */ | |
468 | breakpoint_re_set (); | |
469 | ||
470 | observer_notify_inferior_created (target, from_tty); | |
471 | } | |
472 | ||
473 | /* Kill the inferior if already running. This function is designed | |
474 | to be called when we are about to start the execution of the program | |
475 | from the beginning. Ask the user to confirm that he wants to restart | |
476 | the program being debugged when FROM_TTY is non-null. */ | |
477 | ||
478 | static void | |
479 | kill_if_already_running (int from_tty) | |
480 | { | |
481 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) | |
482 | { | |
483 | /* Bail out before killing the program if we will not be able to | |
484 | restart it. */ | |
485 | target_require_runnable (); | |
486 | ||
487 | if (from_tty | |
488 | && !query (_("The program being debugged has been started already.\n\ | |
489 | Start it from the beginning? "))) | |
490 | error (_("Program not restarted.")); | |
491 | target_kill (); | |
492 | } | |
493 | } | |
494 | ||
495 | /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert | |
496 | a temporary breakpoint at the begining of the main program before | |
497 | running the program. */ | |
498 | ||
499 | static void | |
500 | run_command_1 (char *args, int from_tty, int tbreak_at_main) | |
501 | { | |
502 | char *exec_file; | |
503 | struct cleanup *old_chain; | |
504 | ptid_t ptid; | |
505 | struct ui_out *uiout = current_uiout; | |
506 | ||
507 | dont_repeat (); | |
508 | ||
509 | kill_if_already_running (from_tty); | |
510 | ||
511 | init_wait_for_inferior (); | |
512 | clear_breakpoint_hit_counts (); | |
513 | ||
514 | /* Clean up any leftovers from other runs. Some other things from | |
515 | this function should probably be moved into target_pre_inferior. */ | |
516 | target_pre_inferior (from_tty); | |
517 | ||
518 | /* The comment here used to read, "The exec file is re-read every | |
519 | time we do a generic_mourn_inferior, so we just have to worry | |
520 | about the symbol file." The `generic_mourn_inferior' function | |
521 | gets called whenever the program exits. However, suppose the | |
522 | program exits, and *then* the executable file changes? We need | |
523 | to check again here. Since reopen_exec_file doesn't do anything | |
524 | if the timestamp hasn't changed, I don't see the harm. */ | |
525 | reopen_exec_file (); | |
526 | reread_symbols (); | |
527 | ||
528 | /* Insert the temporary breakpoint if a location was specified. */ | |
529 | if (tbreak_at_main) | |
530 | tbreak_command (main_name (), 0); | |
531 | ||
532 | exec_file = (char *) get_exec_file (0); | |
533 | ||
534 | if (non_stop && !target_supports_non_stop ()) | |
535 | error (_("The target does not support running in non-stop mode.")); | |
536 | ||
537 | /* We keep symbols from add-symbol-file, on the grounds that the | |
538 | user might want to add some symbols before running the program | |
539 | (right?). But sometimes (dynamic loading where the user manually | |
540 | introduces the new symbols with add-symbol-file), the code which | |
541 | the symbols describe does not persist between runs. Currently | |
542 | the user has to manually nuke all symbols between runs if they | |
543 | want them to go away (PR 2207). This is probably reasonable. */ | |
544 | ||
545 | if (!args) | |
546 | { | |
547 | if (target_can_async_p ()) | |
548 | async_disable_stdin (); | |
549 | } | |
550 | else | |
551 | { | |
552 | int async_exec = strip_bg_char (&args); | |
553 | ||
554 | /* If we get a request for running in the bg but the target | |
555 | doesn't support it, error out. */ | |
556 | if (async_exec && !target_can_async_p ()) | |
557 | error (_("Asynchronous execution not supported on this target.")); | |
558 | ||
559 | /* If we don't get a request of running in the bg, then we need | |
560 | to simulate synchronous (fg) execution. */ | |
561 | if (!async_exec && target_can_async_p ()) | |
562 | { | |
563 | /* Simulate synchronous execution. */ | |
564 | async_disable_stdin (); | |
565 | } | |
566 | ||
567 | /* If there were other args, beside '&', process them. */ | |
568 | if (args) | |
569 | set_inferior_args (args); | |
570 | } | |
571 | ||
572 | if (from_tty) | |
573 | { | |
574 | ui_out_field_string (uiout, NULL, "Starting program"); | |
575 | ui_out_text (uiout, ": "); | |
576 | if (exec_file) | |
577 | ui_out_field_string (uiout, "execfile", exec_file); | |
578 | ui_out_spaces (uiout, 1); | |
579 | /* We call get_inferior_args() because we might need to compute | |
580 | the value now. */ | |
581 | ui_out_field_string (uiout, "infargs", get_inferior_args ()); | |
582 | ui_out_text (uiout, "\n"); | |
583 | ui_out_flush (uiout); | |
584 | } | |
585 | ||
586 | /* We call get_inferior_args() because we might need to compute | |
587 | the value now. */ | |
588 | target_create_inferior (exec_file, get_inferior_args (), | |
589 | environ_vector (current_inferior ()->environment), | |
590 | from_tty); | |
591 | ||
592 | /* We're starting off a new process. When we get out of here, in | |
593 | non-stop mode, finish the state of all threads of that process, | |
594 | but leave other threads alone, as they may be stopped in internal | |
595 | events --- the frontend shouldn't see them as stopped. In | |
596 | all-stop, always finish the state of all threads, as we may be | |
597 | resuming more than just the new process. */ | |
598 | if (non_stop) | |
599 | ptid = pid_to_ptid (ptid_get_pid (inferior_ptid)); | |
600 | else | |
601 | ptid = minus_one_ptid; | |
602 | old_chain = make_cleanup (finish_thread_state_cleanup, &ptid); | |
603 | ||
604 | /* Pass zero for FROM_TTY, because at this point the "run" command | |
605 | has done its thing; now we are setting up the running program. */ | |
606 | post_create_inferior (¤t_target, 0); | |
607 | ||
608 | /* Start the target running. Do not use -1 continuation as it would skip | |
609 | breakpoint right at the entry point. */ | |
610 | proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0, 0); | |
611 | ||
612 | /* Since there was no error, there's no need to finish the thread | |
613 | states here. */ | |
614 | discard_cleanups (old_chain); | |
615 | } | |
616 | ||
617 | static void | |
618 | run_command (char *args, int from_tty) | |
619 | { | |
620 | run_command_1 (args, from_tty, 0); | |
621 | } | |
622 | ||
623 | static void | |
624 | run_no_args_command (char *args, int from_tty) | |
625 | { | |
626 | set_inferior_args (""); | |
627 | } | |
628 | \f | |
629 | ||
630 | /* Start the execution of the program up until the beginning of the main | |
631 | program. */ | |
632 | ||
633 | static void | |
634 | start_command (char *args, int from_tty) | |
635 | { | |
636 | /* Some languages such as Ada need to search inside the program | |
637 | minimal symbols for the location where to put the temporary | |
638 | breakpoint before starting. */ | |
639 | if (!have_minimal_symbols ()) | |
640 | error (_("No symbol table loaded. Use the \"file\" command.")); | |
641 | ||
642 | /* Run the program until reaching the main procedure... */ | |
643 | run_command_1 (args, from_tty, 1); | |
644 | } | |
645 | ||
646 | static int | |
647 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
648 | { | |
649 | /* We go through all threads individually instead of compressing | |
650 | into a single target `resume_all' request, because some threads | |
651 | may be stopped in internal breakpoints/events, or stopped waiting | |
652 | for its turn in the displaced stepping queue (that is, they are | |
653 | running && !executing). The target side has no idea about why | |
654 | the thread is stopped, so a `resume_all' command would resume too | |
655 | much. If/when GDB gains a way to tell the target `hold this | |
656 | thread stopped until I say otherwise', then we can optimize | |
657 | this. */ | |
658 | if (!is_stopped (thread->ptid)) | |
659 | return 0; | |
660 | ||
661 | switch_to_thread (thread->ptid); | |
662 | clear_proceed_status (); | |
663 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); | |
664 | return 0; | |
665 | } | |
666 | ||
667 | void | |
668 | ensure_valid_thread (void) | |
669 | { | |
670 | if (ptid_equal (inferior_ptid, null_ptid) | |
671 | || is_exited (inferior_ptid)) | |
672 | error (_("Cannot execute this command without a live selected thread.")); | |
673 | } | |
674 | ||
675 | /* If the user is looking at trace frames, any resumption of execution | |
676 | is likely to mix up recorded and live target data. So simply | |
677 | disallow those commands. */ | |
678 | ||
679 | void | |
680 | ensure_not_tfind_mode (void) | |
681 | { | |
682 | if (get_traceframe_number () >= 0) | |
683 | error (_("Cannot execute this command while looking at trace frames.")); | |
684 | } | |
685 | ||
686 | void | |
687 | continue_1 (int all_threads) | |
688 | { | |
689 | ERROR_NO_INFERIOR; | |
690 | ensure_not_tfind_mode (); | |
691 | ||
692 | if (non_stop && all_threads) | |
693 | { | |
694 | /* Don't error out if the current thread is running, because | |
695 | there may be other stopped threads. */ | |
696 | struct cleanup *old_chain; | |
697 | ||
698 | /* Backup current thread and selected frame. */ | |
699 | old_chain = make_cleanup_restore_current_thread (); | |
700 | ||
701 | iterate_over_threads (proceed_thread_callback, NULL); | |
702 | ||
703 | /* Restore selected ptid. */ | |
704 | do_cleanups (old_chain); | |
705 | } | |
706 | else | |
707 | { | |
708 | ensure_valid_thread (); | |
709 | ensure_not_running (); | |
710 | clear_proceed_status (); | |
711 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); | |
712 | } | |
713 | } | |
714 | ||
715 | /* continue [-a] [proceed-count] [&] */ | |
716 | void | |
717 | continue_command (char *args, int from_tty) | |
718 | { | |
719 | int async_exec = 0; | |
720 | int all_threads = 0; | |
721 | ERROR_NO_INFERIOR; | |
722 | ||
723 | /* Find out whether we must run in the background. */ | |
724 | if (args != NULL) | |
725 | async_exec = strip_bg_char (&args); | |
726 | ||
727 | /* If we must run in the background, but the target can't do it, | |
728 | error out. */ | |
729 | if (async_exec && !target_can_async_p ()) | |
730 | error (_("Asynchronous execution not supported on this target.")); | |
731 | ||
732 | /* If we are not asked to run in the bg, then prepare to run in the | |
733 | foreground, synchronously. */ | |
734 | if (!async_exec && target_can_async_p ()) | |
735 | { | |
736 | /* Simulate synchronous execution. */ | |
737 | async_disable_stdin (); | |
738 | } | |
739 | ||
740 | if (args != NULL) | |
741 | { | |
742 | if (strncmp (args, "-a", sizeof ("-a") - 1) == 0) | |
743 | { | |
744 | all_threads = 1; | |
745 | args += sizeof ("-a") - 1; | |
746 | if (*args == '\0') | |
747 | args = NULL; | |
748 | } | |
749 | } | |
750 | ||
751 | if (!non_stop && all_threads) | |
752 | error (_("`-a' is meaningless in all-stop mode.")); | |
753 | ||
754 | if (args != NULL && all_threads) | |
755 | error (_("Can't resume all threads and specify " | |
756 | "proceed count simultaneously.")); | |
757 | ||
758 | /* If we have an argument left, set proceed count of breakpoint we | |
759 | stopped at. */ | |
760 | if (args != NULL) | |
761 | { | |
762 | bpstat bs = NULL; | |
763 | int num, stat; | |
764 | int stopped = 0; | |
765 | struct thread_info *tp; | |
766 | ||
767 | if (non_stop) | |
768 | tp = find_thread_ptid (inferior_ptid); | |
769 | else | |
770 | { | |
771 | ptid_t last_ptid; | |
772 | struct target_waitstatus ws; | |
773 | ||
774 | get_last_target_status (&last_ptid, &ws); | |
775 | tp = find_thread_ptid (last_ptid); | |
776 | } | |
777 | if (tp != NULL) | |
778 | bs = tp->control.stop_bpstat; | |
779 | ||
780 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
781 | if (stat > 0) | |
782 | { | |
783 | set_ignore_count (num, | |
784 | parse_and_eval_long (args) - 1, | |
785 | from_tty); | |
786 | /* set_ignore_count prints a message ending with a period. | |
787 | So print two spaces before "Continuing.". */ | |
788 | if (from_tty) | |
789 | printf_filtered (" "); | |
790 | stopped = 1; | |
791 | } | |
792 | ||
793 | if (!stopped && from_tty) | |
794 | { | |
795 | printf_filtered | |
796 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
797 | } | |
798 | } | |
799 | ||
800 | if (from_tty) | |
801 | printf_filtered (_("Continuing.\n")); | |
802 | ||
803 | continue_1 (all_threads); | |
804 | } | |
805 | \f | |
806 | /* Record the starting point of a "step" or "next" command. */ | |
807 | ||
808 | static void | |
809 | set_step_frame (void) | |
810 | { | |
811 | struct symtab_and_line sal; | |
812 | ||
813 | find_frame_sal (get_current_frame (), &sal); | |
814 | set_step_info (get_current_frame (), sal); | |
815 | } | |
816 | ||
817 | /* Step until outside of current statement. */ | |
818 | ||
819 | static void | |
820 | step_command (char *count_string, int from_tty) | |
821 | { | |
822 | step_1 (0, 0, count_string); | |
823 | } | |
824 | ||
825 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
826 | ||
827 | static void | |
828 | next_command (char *count_string, int from_tty) | |
829 | { | |
830 | step_1 (1, 0, count_string); | |
831 | } | |
832 | ||
833 | /* Likewise, but step only one instruction. */ | |
834 | ||
835 | void | |
836 | stepi_command (char *count_string, int from_tty) | |
837 | { | |
838 | step_1 (0, 1, count_string); | |
839 | } | |
840 | ||
841 | void | |
842 | nexti_command (char *count_string, int from_tty) | |
843 | { | |
844 | step_1 (1, 1, count_string); | |
845 | } | |
846 | ||
847 | void | |
848 | delete_longjmp_breakpoint_cleanup (void *arg) | |
849 | { | |
850 | int thread = * (int *) arg; | |
851 | delete_longjmp_breakpoint (thread); | |
852 | } | |
853 | ||
854 | static void | |
855 | step_1 (int skip_subroutines, int single_inst, char *count_string) | |
856 | { | |
857 | int count = 1; | |
858 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
859 | int async_exec = 0; | |
860 | int thread = -1; | |
861 | ||
862 | ERROR_NO_INFERIOR; | |
863 | ensure_not_tfind_mode (); | |
864 | ensure_valid_thread (); | |
865 | ensure_not_running (); | |
866 | ||
867 | if (count_string) | |
868 | async_exec = strip_bg_char (&count_string); | |
869 | ||
870 | /* If we get a request for running in the bg but the target | |
871 | doesn't support it, error out. */ | |
872 | if (async_exec && !target_can_async_p ()) | |
873 | error (_("Asynchronous execution not supported on this target.")); | |
874 | ||
875 | /* If we don't get a request of running in the bg, then we need | |
876 | to simulate synchronous (fg) execution. */ | |
877 | if (!async_exec && target_can_async_p ()) | |
878 | { | |
879 | /* Simulate synchronous execution. */ | |
880 | async_disable_stdin (); | |
881 | } | |
882 | ||
883 | count = count_string ? parse_and_eval_long (count_string) : 1; | |
884 | ||
885 | if (!single_inst || skip_subroutines) /* Leave si command alone. */ | |
886 | { | |
887 | struct thread_info *tp = inferior_thread (); | |
888 | ||
889 | if (in_thread_list (inferior_ptid)) | |
890 | thread = pid_to_thread_id (inferior_ptid); | |
891 | ||
892 | set_longjmp_breakpoint (tp, get_frame_id (get_current_frame ())); | |
893 | ||
894 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
895 | } | |
896 | ||
897 | /* In synchronous case, all is well; each step_once call will step once. */ | |
898 | if (!target_can_async_p ()) | |
899 | { | |
900 | for (; count > 0; count--) | |
901 | { | |
902 | step_once (skip_subroutines, single_inst, count, thread); | |
903 | ||
904 | if (!target_has_execution) | |
905 | break; | |
906 | else | |
907 | { | |
908 | struct thread_info *tp = inferior_thread (); | |
909 | ||
910 | if (!tp->control.stop_step || !tp->step_multi) | |
911 | { | |
912 | /* If we stopped for some reason that is not stepping | |
913 | there are no further steps to make. */ | |
914 | tp->step_multi = 0; | |
915 | break; | |
916 | } | |
917 | } | |
918 | } | |
919 | ||
920 | do_cleanups (cleanups); | |
921 | } | |
922 | else | |
923 | { | |
924 | /* In the case of an asynchronous target things get complicated; | |
925 | do only one step for now, before returning control to the | |
926 | event loop. Let the continuation figure out how many other | |
927 | steps we need to do, and handle them one at the time, through | |
928 | step_once. */ | |
929 | step_once (skip_subroutines, single_inst, count, thread); | |
930 | ||
931 | /* We are running, and the continuation is installed. It will | |
932 | disable the longjmp breakpoint as appropriate. */ | |
933 | discard_cleanups (cleanups); | |
934 | } | |
935 | } | |
936 | ||
937 | struct step_1_continuation_args | |
938 | { | |
939 | int count; | |
940 | int skip_subroutines; | |
941 | int single_inst; | |
942 | int thread; | |
943 | }; | |
944 | ||
945 | /* Called after we are done with one step operation, to check whether | |
946 | we need to step again, before we print the prompt and return control | |
947 | to the user. If count is > 1, we will need to do one more call to | |
948 | proceed(), via step_once(). Basically it is like step_once and | |
949 | step_1_continuation are co-recursive. */ | |
950 | static void | |
951 | step_1_continuation (void *args, int err) | |
952 | { | |
953 | struct step_1_continuation_args *a = args; | |
954 | ||
955 | if (target_has_execution) | |
956 | { | |
957 | struct thread_info *tp; | |
958 | ||
959 | tp = inferior_thread (); | |
960 | if (!err | |
961 | && tp->step_multi && tp->control.stop_step) | |
962 | { | |
963 | /* There are more steps to make, and we did stop due to | |
964 | ending a stepping range. Do another step. */ | |
965 | step_once (a->skip_subroutines, a->single_inst, | |
966 | a->count - 1, a->thread); | |
967 | return; | |
968 | } | |
969 | tp->step_multi = 0; | |
970 | } | |
971 | ||
972 | /* We either hit an error, or stopped for some reason that is | |
973 | not stepping, or there are no further steps to make. | |
974 | Cleanup. */ | |
975 | if (!a->single_inst || a->skip_subroutines) | |
976 | delete_longjmp_breakpoint (a->thread); | |
977 | } | |
978 | ||
979 | /* Do just one step operation. This is useful to implement the 'step | |
980 | n' kind of commands. In case of asynchronous targets, we will have | |
981 | to set up a continuation to be done after the target stops (after | |
982 | this one step). For synch targets, the caller handles further | |
983 | stepping. */ | |
984 | ||
985 | static void | |
986 | step_once (int skip_subroutines, int single_inst, int count, int thread) | |
987 | { | |
988 | struct frame_info *frame = get_current_frame (); | |
989 | ||
990 | if (count > 0) | |
991 | { | |
992 | /* Don't assume THREAD is a valid thread id. It is set to -1 if | |
993 | the longjmp breakpoint was not required. Use the | |
994 | INFERIOR_PTID thread instead, which is the same thread when | |
995 | THREAD is set. */ | |
996 | struct thread_info *tp = inferior_thread (); | |
997 | ||
998 | clear_proceed_status (); | |
999 | set_step_frame (); | |
1000 | ||
1001 | if (!single_inst) | |
1002 | { | |
1003 | CORE_ADDR pc; | |
1004 | ||
1005 | /* Step at an inlined function behaves like "down". */ | |
1006 | if (!skip_subroutines && !single_inst | |
1007 | && inline_skipped_frames (inferior_ptid)) | |
1008 | { | |
1009 | ptid_t resume_ptid; | |
1010 | ||
1011 | /* Pretend that we've ran. */ | |
1012 | resume_ptid = user_visible_resume_ptid (1); | |
1013 | set_running (resume_ptid, 1); | |
1014 | ||
1015 | step_into_inline_frame (inferior_ptid); | |
1016 | if (count > 1) | |
1017 | step_once (skip_subroutines, single_inst, count - 1, thread); | |
1018 | else | |
1019 | { | |
1020 | /* Pretend that we've stopped. */ | |
1021 | normal_stop (); | |
1022 | ||
1023 | if (target_can_async_p ()) | |
1024 | inferior_event_handler (INF_EXEC_COMPLETE, NULL); | |
1025 | } | |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | pc = get_frame_pc (frame); | |
1030 | find_pc_line_pc_range (pc, | |
1031 | &tp->control.step_range_start, | |
1032 | &tp->control.step_range_end); | |
1033 | ||
1034 | /* If we have no line info, switch to stepi mode. */ | |
1035 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) | |
1036 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1037 | else if (tp->control.step_range_end == 0) | |
1038 | { | |
1039 | char *name; | |
1040 | ||
1041 | if (find_pc_partial_function (pc, &name, | |
1042 | &tp->control.step_range_start, | |
1043 | &tp->control.step_range_end) == 0) | |
1044 | error (_("Cannot find bounds of current function")); | |
1045 | ||
1046 | target_terminal_ours (); | |
1047 | printf_filtered (_("Single stepping until exit from function %s," | |
1048 | "\nwhich has no line number information.\n"), | |
1049 | name); | |
1050 | } | |
1051 | } | |
1052 | else | |
1053 | { | |
1054 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
1055 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1056 | if (!skip_subroutines) | |
1057 | /* It is stepi. | |
1058 | Don't step over function calls, not even to functions lacking | |
1059 | line numbers. */ | |
1060 | tp->control.step_over_calls = STEP_OVER_NONE; | |
1061 | } | |
1062 | ||
1063 | if (skip_subroutines) | |
1064 | tp->control.step_over_calls = STEP_OVER_ALL; | |
1065 | ||
1066 | tp->step_multi = (count > 1); | |
1067 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
1068 | ||
1069 | /* For async targets, register a continuation to do any | |
1070 | additional steps. For sync targets, the caller will handle | |
1071 | further stepping. */ | |
1072 | if (target_can_async_p ()) | |
1073 | { | |
1074 | struct step_1_continuation_args *args; | |
1075 | ||
1076 | args = xmalloc (sizeof (*args)); | |
1077 | args->skip_subroutines = skip_subroutines; | |
1078 | args->single_inst = single_inst; | |
1079 | args->count = count; | |
1080 | args->thread = thread; | |
1081 | ||
1082 | add_intermediate_continuation (tp, step_1_continuation, args, xfree); | |
1083 | } | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | \f | |
1088 | /* Continue program at specified address. */ | |
1089 | ||
1090 | static void | |
1091 | jump_command (char *arg, int from_tty) | |
1092 | { | |
1093 | struct gdbarch *gdbarch = get_current_arch (); | |
1094 | CORE_ADDR addr; | |
1095 | struct symtabs_and_lines sals; | |
1096 | struct symtab_and_line sal; | |
1097 | struct symbol *fn; | |
1098 | struct symbol *sfn; | |
1099 | int async_exec = 0; | |
1100 | ||
1101 | ERROR_NO_INFERIOR; | |
1102 | ensure_not_tfind_mode (); | |
1103 | ensure_valid_thread (); | |
1104 | ensure_not_running (); | |
1105 | ||
1106 | /* Find out whether we must run in the background. */ | |
1107 | if (arg != NULL) | |
1108 | async_exec = strip_bg_char (&arg); | |
1109 | ||
1110 | /* If we must run in the background, but the target can't do it, | |
1111 | error out. */ | |
1112 | if (async_exec && !target_can_async_p ()) | |
1113 | error (_("Asynchronous execution not supported on this target.")); | |
1114 | ||
1115 | if (!arg) | |
1116 | error_no_arg (_("starting address")); | |
1117 | ||
1118 | sals = decode_line_spec_1 (arg, DECODE_LINE_FUNFIRSTLINE); | |
1119 | if (sals.nelts != 1) | |
1120 | { | |
1121 | error (_("Unreasonable jump request")); | |
1122 | } | |
1123 | ||
1124 | sal = sals.sals[0]; | |
1125 | xfree (sals.sals); | |
1126 | ||
1127 | if (sal.symtab == 0 && sal.pc == 0) | |
1128 | error (_("No source file has been specified.")); | |
1129 | ||
1130 | resolve_sal_pc (&sal); /* May error out. */ | |
1131 | ||
1132 | /* See if we are trying to jump to another function. */ | |
1133 | fn = get_frame_function (get_current_frame ()); | |
1134 | sfn = find_pc_function (sal.pc); | |
1135 | if (fn != NULL && sfn != fn) | |
1136 | { | |
1137 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, | |
1138 | SYMBOL_PRINT_NAME (fn))) | |
1139 | { | |
1140 | error (_("Not confirmed.")); | |
1141 | /* NOTREACHED */ | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | if (sfn != NULL) | |
1146 | { | |
1147 | fixup_symbol_section (sfn, 0); | |
1148 | if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn)) && | |
1149 | !section_is_mapped (SYMBOL_OBJ_SECTION (sfn))) | |
1150 | { | |
1151 | if (!query (_("WARNING!!! Destination is in " | |
1152 | "unmapped overlay! Jump anyway? "))) | |
1153 | { | |
1154 | error (_("Not confirmed.")); | |
1155 | /* NOTREACHED */ | |
1156 | } | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | addr = sal.pc; | |
1161 | ||
1162 | if (from_tty) | |
1163 | { | |
1164 | printf_filtered (_("Continuing at ")); | |
1165 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); | |
1166 | printf_filtered (".\n"); | |
1167 | } | |
1168 | ||
1169 | /* If we are not asked to run in the bg, then prepare to run in the | |
1170 | foreground, synchronously. */ | |
1171 | if (!async_exec && target_can_async_p ()) | |
1172 | { | |
1173 | /* Simulate synchronous execution. */ | |
1174 | async_disable_stdin (); | |
1175 | } | |
1176 | ||
1177 | clear_proceed_status (); | |
1178 | proceed (addr, TARGET_SIGNAL_0, 0); | |
1179 | } | |
1180 | \f | |
1181 | ||
1182 | /* Go to line or address in current procedure. */ | |
1183 | static void | |
1184 | go_command (char *line_no, int from_tty) | |
1185 | { | |
1186 | if (line_no == (char *) NULL || !*line_no) | |
1187 | printf_filtered (_("Usage: go <location>\n")); | |
1188 | else | |
1189 | { | |
1190 | tbreak_command (line_no, from_tty); | |
1191 | jump_command (line_no, from_tty); | |
1192 | } | |
1193 | } | |
1194 | \f | |
1195 | ||
1196 | /* Continue program giving it specified signal. */ | |
1197 | ||
1198 | static void | |
1199 | signal_command (char *signum_exp, int from_tty) | |
1200 | { | |
1201 | enum target_signal oursig; | |
1202 | int async_exec = 0; | |
1203 | ||
1204 | dont_repeat (); /* Too dangerous. */ | |
1205 | ERROR_NO_INFERIOR; | |
1206 | ensure_not_tfind_mode (); | |
1207 | ensure_valid_thread (); | |
1208 | ensure_not_running (); | |
1209 | ||
1210 | /* Find out whether we must run in the background. */ | |
1211 | if (signum_exp != NULL) | |
1212 | async_exec = strip_bg_char (&signum_exp); | |
1213 | ||
1214 | /* If we must run in the background, but the target can't do it, | |
1215 | error out. */ | |
1216 | if (async_exec && !target_can_async_p ()) | |
1217 | error (_("Asynchronous execution not supported on this target.")); | |
1218 | ||
1219 | /* If we are not asked to run in the bg, then prepare to run in the | |
1220 | foreground, synchronously. */ | |
1221 | if (!async_exec && target_can_async_p ()) | |
1222 | { | |
1223 | /* Simulate synchronous execution. */ | |
1224 | async_disable_stdin (); | |
1225 | } | |
1226 | ||
1227 | if (!signum_exp) | |
1228 | error_no_arg (_("signal number")); | |
1229 | ||
1230 | /* It would be even slicker to make signal names be valid expressions, | |
1231 | (the type could be "enum $signal" or some such), then the user could | |
1232 | assign them to convenience variables. */ | |
1233 | oursig = target_signal_from_name (signum_exp); | |
1234 | ||
1235 | if (oursig == TARGET_SIGNAL_UNKNOWN) | |
1236 | { | |
1237 | /* No, try numeric. */ | |
1238 | int num = parse_and_eval_long (signum_exp); | |
1239 | ||
1240 | if (num == 0) | |
1241 | oursig = TARGET_SIGNAL_0; | |
1242 | else | |
1243 | oursig = target_signal_from_command (num); | |
1244 | } | |
1245 | ||
1246 | if (from_tty) | |
1247 | { | |
1248 | if (oursig == TARGET_SIGNAL_0) | |
1249 | printf_filtered (_("Continuing with no signal.\n")); | |
1250 | else | |
1251 | printf_filtered (_("Continuing with signal %s.\n"), | |
1252 | target_signal_to_name (oursig)); | |
1253 | } | |
1254 | ||
1255 | clear_proceed_status (); | |
1256 | proceed ((CORE_ADDR) -1, oursig, 0); | |
1257 | } | |
1258 | ||
1259 | /* Continuation args to be passed to the "until" command | |
1260 | continuation. */ | |
1261 | struct until_next_continuation_args | |
1262 | { | |
1263 | /* The thread that was current when the command was executed. */ | |
1264 | int thread; | |
1265 | }; | |
1266 | ||
1267 | /* A continuation callback for until_next_command. */ | |
1268 | ||
1269 | static void | |
1270 | until_next_continuation (void *arg, int err) | |
1271 | { | |
1272 | struct until_next_continuation_args *a = arg; | |
1273 | ||
1274 | delete_longjmp_breakpoint (a->thread); | |
1275 | } | |
1276 | ||
1277 | /* Proceed until we reach a different source line with pc greater than | |
1278 | our current one or exit the function. We skip calls in both cases. | |
1279 | ||
1280 | Note that eventually this command should probably be changed so | |
1281 | that only source lines are printed out when we hit the breakpoint | |
1282 | we set. This may involve changes to wait_for_inferior and the | |
1283 | proceed status code. */ | |
1284 | ||
1285 | static void | |
1286 | until_next_command (int from_tty) | |
1287 | { | |
1288 | struct frame_info *frame; | |
1289 | CORE_ADDR pc; | |
1290 | struct symbol *func; | |
1291 | struct symtab_and_line sal; | |
1292 | struct thread_info *tp = inferior_thread (); | |
1293 | int thread = tp->num; | |
1294 | struct cleanup *old_chain; | |
1295 | ||
1296 | clear_proceed_status (); | |
1297 | set_step_frame (); | |
1298 | ||
1299 | frame = get_current_frame (); | |
1300 | ||
1301 | /* Step until either exited from this function or greater | |
1302 | than the current line (if in symbolic section) or pc (if | |
1303 | not). */ | |
1304 | ||
1305 | pc = get_frame_pc (frame); | |
1306 | func = find_pc_function (pc); | |
1307 | ||
1308 | if (!func) | |
1309 | { | |
1310 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); | |
1311 | ||
1312 | if (msymbol == NULL) | |
1313 | error (_("Execution is not within a known function.")); | |
1314 | ||
1315 | tp->control.step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); | |
1316 | tp->control.step_range_end = pc; | |
1317 | } | |
1318 | else | |
1319 | { | |
1320 | sal = find_pc_line (pc, 0); | |
1321 | ||
1322 | tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); | |
1323 | tp->control.step_range_end = sal.end; | |
1324 | } | |
1325 | ||
1326 | tp->control.step_over_calls = STEP_OVER_ALL; | |
1327 | ||
1328 | tp->step_multi = 0; /* Only one call to proceed */ | |
1329 | ||
1330 | set_longjmp_breakpoint (tp, get_frame_id (frame)); | |
1331 | old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
1332 | ||
1333 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
1334 | ||
1335 | if (target_can_async_p () && is_running (inferior_ptid)) | |
1336 | { | |
1337 | struct until_next_continuation_args *cont_args; | |
1338 | ||
1339 | discard_cleanups (old_chain); | |
1340 | cont_args = XNEW (struct until_next_continuation_args); | |
1341 | cont_args->thread = inferior_thread ()->num; | |
1342 | ||
1343 | add_continuation (tp, until_next_continuation, cont_args, xfree); | |
1344 | } | |
1345 | else | |
1346 | do_cleanups (old_chain); | |
1347 | } | |
1348 | ||
1349 | static void | |
1350 | until_command (char *arg, int from_tty) | |
1351 | { | |
1352 | int async_exec = 0; | |
1353 | ||
1354 | ERROR_NO_INFERIOR; | |
1355 | ensure_not_tfind_mode (); | |
1356 | ensure_valid_thread (); | |
1357 | ensure_not_running (); | |
1358 | ||
1359 | /* Find out whether we must run in the background. */ | |
1360 | if (arg != NULL) | |
1361 | async_exec = strip_bg_char (&arg); | |
1362 | ||
1363 | /* If we must run in the background, but the target can't do it, | |
1364 | error out. */ | |
1365 | if (async_exec && !target_can_async_p ()) | |
1366 | error (_("Asynchronous execution not supported on this target.")); | |
1367 | ||
1368 | /* If we are not asked to run in the bg, then prepare to run in the | |
1369 | foreground, synchronously. */ | |
1370 | if (!async_exec && target_can_async_p ()) | |
1371 | { | |
1372 | /* Simulate synchronous execution. */ | |
1373 | async_disable_stdin (); | |
1374 | } | |
1375 | ||
1376 | if (arg) | |
1377 | until_break_command (arg, from_tty, 0); | |
1378 | else | |
1379 | until_next_command (from_tty); | |
1380 | } | |
1381 | ||
1382 | static void | |
1383 | advance_command (char *arg, int from_tty) | |
1384 | { | |
1385 | int async_exec = 0; | |
1386 | ||
1387 | ERROR_NO_INFERIOR; | |
1388 | ensure_not_tfind_mode (); | |
1389 | ensure_valid_thread (); | |
1390 | ensure_not_running (); | |
1391 | ||
1392 | if (arg == NULL) | |
1393 | error_no_arg (_("a location")); | |
1394 | ||
1395 | /* Find out whether we must run in the background. */ | |
1396 | if (arg != NULL) | |
1397 | async_exec = strip_bg_char (&arg); | |
1398 | ||
1399 | /* If we must run in the background, but the target can't do it, | |
1400 | error out. */ | |
1401 | if (async_exec && !target_can_async_p ()) | |
1402 | error (_("Asynchronous execution not supported on this target.")); | |
1403 | ||
1404 | /* If we are not asked to run in the bg, then prepare to run in the | |
1405 | foreground, synchronously. */ | |
1406 | if (!async_exec && target_can_async_p ()) | |
1407 | { | |
1408 | /* Simulate synchronous execution. */ | |
1409 | async_disable_stdin (); | |
1410 | } | |
1411 | ||
1412 | until_break_command (arg, from_tty, 1); | |
1413 | } | |
1414 | \f | |
1415 | /* Return the value of the result of a function at the end of a 'finish' | |
1416 | command/BP. */ | |
1417 | ||
1418 | struct value * | |
1419 | get_return_value (struct type *func_type, struct type *value_type) | |
1420 | { | |
1421 | struct regcache *stop_regs = stop_registers; | |
1422 | struct gdbarch *gdbarch; | |
1423 | struct value *value; | |
1424 | struct ui_out *uiout = current_uiout; | |
1425 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); | |
1426 | ||
1427 | /* If stop_registers were not saved, use the current registers. */ | |
1428 | if (!stop_regs) | |
1429 | { | |
1430 | stop_regs = regcache_dup (get_current_regcache ()); | |
1431 | cleanup = make_cleanup_regcache_xfree (stop_regs); | |
1432 | } | |
1433 | ||
1434 | gdbarch = get_regcache_arch (stop_regs); | |
1435 | ||
1436 | CHECK_TYPEDEF (value_type); | |
1437 | gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID); | |
1438 | ||
1439 | /* FIXME: 2003-09-27: When returning from a nested inferior function | |
1440 | call, it's possible (with no help from the architecture vector) | |
1441 | to locate and return/print a "struct return" value. This is just | |
1442 | a more complicated case of what is already being done in the | |
1443 | inferior function call code. In fact, when inferior function | |
1444 | calls are made async, this will likely be made the norm. */ | |
1445 | ||
1446 | switch (gdbarch_return_value (gdbarch, func_type, value_type, | |
1447 | NULL, NULL, NULL)) | |
1448 | { | |
1449 | case RETURN_VALUE_REGISTER_CONVENTION: | |
1450 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
1451 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: | |
1452 | value = allocate_value (value_type); | |
1453 | gdbarch_return_value (gdbarch, func_type, value_type, stop_regs, | |
1454 | value_contents_raw (value), NULL); | |
1455 | break; | |
1456 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1457 | value = NULL; | |
1458 | break; | |
1459 | default: | |
1460 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
1461 | } | |
1462 | ||
1463 | do_cleanups (cleanup); | |
1464 | ||
1465 | return value; | |
1466 | } | |
1467 | ||
1468 | /* Print the result of a function at the end of a 'finish' command. */ | |
1469 | ||
1470 | static void | |
1471 | print_return_value (struct type *func_type, struct type *value_type) | |
1472 | { | |
1473 | struct value *value = get_return_value (func_type, value_type); | |
1474 | struct cleanup *old_chain; | |
1475 | struct ui_stream *stb; | |
1476 | struct ui_out *uiout = current_uiout; | |
1477 | ||
1478 | if (value) | |
1479 | { | |
1480 | struct value_print_options opts; | |
1481 | ||
1482 | /* Print it. */ | |
1483 | stb = ui_out_stream_new (uiout); | |
1484 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
1485 | ui_out_text (uiout, "Value returned is "); | |
1486 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", | |
1487 | record_latest_value (value)); | |
1488 | ui_out_text (uiout, " = "); | |
1489 | get_raw_print_options (&opts); | |
1490 | value_print (value, stb->stream, &opts); | |
1491 | ui_out_field_stream (uiout, "return-value", stb); | |
1492 | ui_out_text (uiout, "\n"); | |
1493 | do_cleanups (old_chain); | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | ui_out_text (uiout, "Value returned has type: "); | |
1498 | ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type)); | |
1499 | ui_out_text (uiout, "."); | |
1500 | ui_out_text (uiout, " Cannot determine contents\n"); | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | /* Stuff that needs to be done by the finish command after the target | |
1505 | has stopped. In asynchronous mode, we wait for the target to stop | |
1506 | in the call to poll or select in the event loop, so it is | |
1507 | impossible to do all the stuff as part of the finish_command | |
1508 | function itself. The only chance we have to complete this command | |
1509 | is in fetch_inferior_event, which is called by the event loop as | |
1510 | soon as it detects that the target has stopped. */ | |
1511 | ||
1512 | struct finish_command_continuation_args | |
1513 | { | |
1514 | /* The thread that as current when the command was executed. */ | |
1515 | int thread; | |
1516 | struct breakpoint *breakpoint; | |
1517 | struct symbol *function; | |
1518 | }; | |
1519 | ||
1520 | static void | |
1521 | finish_command_continuation (void *arg, int err) | |
1522 | { | |
1523 | struct finish_command_continuation_args *a = arg; | |
1524 | ||
1525 | if (!err) | |
1526 | { | |
1527 | struct thread_info *tp = NULL; | |
1528 | bpstat bs = NULL; | |
1529 | ||
1530 | if (!ptid_equal (inferior_ptid, null_ptid) | |
1531 | && target_has_execution | |
1532 | && is_stopped (inferior_ptid)) | |
1533 | { | |
1534 | tp = inferior_thread (); | |
1535 | bs = tp->control.stop_bpstat; | |
1536 | } | |
1537 | ||
1538 | if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL | |
1539 | && a->function != NULL) | |
1540 | { | |
1541 | struct type *value_type; | |
1542 | ||
1543 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function)); | |
1544 | if (!value_type) | |
1545 | internal_error (__FILE__, __LINE__, | |
1546 | _("finish_command: function has no target type")); | |
1547 | ||
1548 | if (TYPE_CODE (value_type) != TYPE_CODE_VOID) | |
1549 | { | |
1550 | volatile struct gdb_exception ex; | |
1551 | ||
1552 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1553 | { | |
1554 | /* print_return_value can throw an exception in some | |
1555 | circumstances. We need to catch this so that we still | |
1556 | delete the breakpoint. */ | |
1557 | print_return_value (SYMBOL_TYPE (a->function), value_type); | |
1558 | } | |
1559 | if (ex.reason < 0) | |
1560 | exception_print (gdb_stdout, ex); | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | /* We suppress normal call of normal_stop observer and do it | |
1565 | here so that the *stopped notification includes the return | |
1566 | value. */ | |
1567 | if (bs != NULL && tp->control.proceed_to_finish) | |
1568 | observer_notify_normal_stop (bs, 1 /* print frame */); | |
1569 | } | |
1570 | ||
1571 | delete_breakpoint (a->breakpoint); | |
1572 | delete_longjmp_breakpoint (a->thread); | |
1573 | } | |
1574 | ||
1575 | static void | |
1576 | finish_command_continuation_free_arg (void *arg) | |
1577 | { | |
1578 | xfree (arg); | |
1579 | } | |
1580 | ||
1581 | /* finish_backward -- helper function for finish_command. */ | |
1582 | ||
1583 | static void | |
1584 | finish_backward (struct symbol *function) | |
1585 | { | |
1586 | struct symtab_and_line sal; | |
1587 | struct thread_info *tp = inferior_thread (); | |
1588 | CORE_ADDR pc; | |
1589 | CORE_ADDR func_addr; | |
1590 | ||
1591 | pc = get_frame_pc (get_current_frame ()); | |
1592 | ||
1593 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1594 | internal_error (__FILE__, __LINE__, | |
1595 | _("Finish: couldn't find function.")); | |
1596 | ||
1597 | sal = find_pc_line (func_addr, 0); | |
1598 | ||
1599 | tp->control.proceed_to_finish = 1; | |
1600 | /* Special case: if we're sitting at the function entry point, | |
1601 | then all we need to do is take a reverse singlestep. We | |
1602 | don't need to set a breakpoint, and indeed it would do us | |
1603 | no good to do so. | |
1604 | ||
1605 | Note that this can only happen at frame #0, since there's | |
1606 | no way that a function up the stack can have a return address | |
1607 | that's equal to its entry point. */ | |
1608 | ||
1609 | if (sal.pc != pc) | |
1610 | { | |
1611 | struct frame_info *frame = get_selected_frame (NULL); | |
1612 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1613 | struct symtab_and_line sr_sal; | |
1614 | ||
1615 | /* Set a step-resume at the function's entry point. Once that's | |
1616 | hit, we'll do one more step backwards. */ | |
1617 | init_sal (&sr_sal); | |
1618 | sr_sal.pc = sal.pc; | |
1619 | sr_sal.pspace = get_frame_program_space (frame); | |
1620 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1621 | sr_sal, null_frame_id); | |
1622 | ||
1623 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); | |
1624 | } | |
1625 | else | |
1626 | { | |
1627 | /* We're almost there -- we just need to back up by one more | |
1628 | single-step. */ | |
1629 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1630 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | /* finish_forward -- helper function for finish_command. */ | |
1635 | ||
1636 | static void | |
1637 | finish_forward (struct symbol *function, struct frame_info *frame) | |
1638 | { | |
1639 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1640 | struct symtab_and_line sal; | |
1641 | struct thread_info *tp = inferior_thread (); | |
1642 | struct breakpoint *breakpoint; | |
1643 | struct cleanup *old_chain; | |
1644 | struct finish_command_continuation_args *cargs; | |
1645 | int thread = tp->num; | |
1646 | ||
1647 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1648 | sal.pc = get_frame_pc (frame); | |
1649 | ||
1650 | breakpoint = set_momentary_breakpoint (gdbarch, sal, | |
1651 | get_stack_frame_id (frame), | |
1652 | bp_finish); | |
1653 | ||
1654 | old_chain = make_cleanup_delete_breakpoint (breakpoint); | |
1655 | ||
1656 | set_longjmp_breakpoint (tp, get_frame_id (frame)); | |
1657 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
1658 | ||
1659 | /* We want stop_registers, please... */ | |
1660 | tp->control.proceed_to_finish = 1; | |
1661 | cargs = xmalloc (sizeof (*cargs)); | |
1662 | ||
1663 | cargs->thread = thread; | |
1664 | cargs->breakpoint = breakpoint; | |
1665 | cargs->function = function; | |
1666 | add_continuation (tp, finish_command_continuation, cargs, | |
1667 | finish_command_continuation_free_arg); | |
1668 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); | |
1669 | ||
1670 | discard_cleanups (old_chain); | |
1671 | if (!target_can_async_p ()) | |
1672 | do_all_continuations (0); | |
1673 | } | |
1674 | ||
1675 | /* "finish": Set a temporary breakpoint at the place the selected | |
1676 | frame will return to, then continue. */ | |
1677 | ||
1678 | static void | |
1679 | finish_command (char *arg, int from_tty) | |
1680 | { | |
1681 | struct frame_info *frame; | |
1682 | struct symbol *function; | |
1683 | ||
1684 | int async_exec = 0; | |
1685 | ||
1686 | ERROR_NO_INFERIOR; | |
1687 | ensure_not_tfind_mode (); | |
1688 | ensure_valid_thread (); | |
1689 | ensure_not_running (); | |
1690 | ||
1691 | /* Find out whether we must run in the background. */ | |
1692 | if (arg != NULL) | |
1693 | async_exec = strip_bg_char (&arg); | |
1694 | ||
1695 | /* If we must run in the background, but the target can't do it, | |
1696 | error out. */ | |
1697 | if (async_exec && !target_can_async_p ()) | |
1698 | error (_("Asynchronous execution not supported on this target.")); | |
1699 | ||
1700 | /* If we are not asked to run in the bg, then prepare to run in the | |
1701 | foreground, synchronously. */ | |
1702 | if (!async_exec && target_can_async_p ()) | |
1703 | { | |
1704 | /* Simulate synchronous execution. */ | |
1705 | async_disable_stdin (); | |
1706 | } | |
1707 | ||
1708 | if (arg) | |
1709 | error (_("The \"finish\" command does not take any arguments.")); | |
1710 | ||
1711 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); | |
1712 | if (frame == 0) | |
1713 | error (_("\"finish\" not meaningful in the outermost frame.")); | |
1714 | ||
1715 | clear_proceed_status (); | |
1716 | ||
1717 | /* Finishing from an inline frame is completely different. We don't | |
1718 | try to show the "return value" - no way to locate it. So we do | |
1719 | not need a completion. */ | |
1720 | if (get_frame_type (get_selected_frame (_("No selected frame."))) | |
1721 | == INLINE_FRAME) | |
1722 | { | |
1723 | /* Claim we are stepping in the calling frame. An empty step | |
1724 | range means that we will stop once we aren't in a function | |
1725 | called by that frame. We don't use the magic "1" value for | |
1726 | step_range_end, because then infrun will think this is nexti, | |
1727 | and not step over the rest of this inlined function call. */ | |
1728 | struct thread_info *tp = inferior_thread (); | |
1729 | struct symtab_and_line empty_sal; | |
1730 | ||
1731 | init_sal (&empty_sal); | |
1732 | set_step_info (frame, empty_sal); | |
1733 | tp->control.step_range_start = get_frame_pc (frame); | |
1734 | tp->control.step_range_end = tp->control.step_range_start; | |
1735 | tp->control.step_over_calls = STEP_OVER_ALL; | |
1736 | ||
1737 | /* Print info on the selected frame, including level number but not | |
1738 | source. */ | |
1739 | if (from_tty) | |
1740 | { | |
1741 | printf_filtered (_("Run till exit from ")); | |
1742 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION); | |
1743 | } | |
1744 | ||
1745 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
1746 | return; | |
1747 | } | |
1748 | ||
1749 | /* Find the function we will return from. */ | |
1750 | ||
1751 | function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); | |
1752 | ||
1753 | /* Print info on the selected frame, including level number but not | |
1754 | source. */ | |
1755 | if (from_tty) | |
1756 | { | |
1757 | if (execution_direction == EXEC_REVERSE) | |
1758 | printf_filtered (_("Run back to call of ")); | |
1759 | else | |
1760 | printf_filtered (_("Run till exit from ")); | |
1761 | ||
1762 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION); | |
1763 | } | |
1764 | ||
1765 | if (execution_direction == EXEC_REVERSE) | |
1766 | finish_backward (function); | |
1767 | else | |
1768 | finish_forward (function, frame); | |
1769 | } | |
1770 | \f | |
1771 | ||
1772 | static void | |
1773 | program_info (char *args, int from_tty) | |
1774 | { | |
1775 | bpstat bs; | |
1776 | int num, stat; | |
1777 | struct thread_info *tp; | |
1778 | ptid_t ptid; | |
1779 | ||
1780 | if (!target_has_execution) | |
1781 | { | |
1782 | printf_filtered (_("The program being debugged is not being run.\n")); | |
1783 | return; | |
1784 | } | |
1785 | ||
1786 | if (non_stop) | |
1787 | ptid = inferior_ptid; | |
1788 | else | |
1789 | { | |
1790 | struct target_waitstatus ws; | |
1791 | ||
1792 | get_last_target_status (&ptid, &ws); | |
1793 | } | |
1794 | ||
1795 | if (ptid_equal (ptid, null_ptid) || is_exited (ptid)) | |
1796 | error (_("Invalid selected thread.")); | |
1797 | else if (is_running (ptid)) | |
1798 | error (_("Selected thread is running.")); | |
1799 | ||
1800 | tp = find_thread_ptid (ptid); | |
1801 | bs = tp->control.stop_bpstat; | |
1802 | stat = bpstat_num (&bs, &num); | |
1803 | ||
1804 | target_files_info (); | |
1805 | printf_filtered (_("Program stopped at %s.\n"), | |
1806 | paddress (target_gdbarch, stop_pc)); | |
1807 | if (tp->control.stop_step) | |
1808 | printf_filtered (_("It stopped after being stepped.\n")); | |
1809 | else if (stat != 0) | |
1810 | { | |
1811 | /* There may be several breakpoints in the same place, so this | |
1812 | isn't as strange as it seems. */ | |
1813 | while (stat != 0) | |
1814 | { | |
1815 | if (stat < 0) | |
1816 | { | |
1817 | printf_filtered (_("It stopped at a breakpoint " | |
1818 | "that has since been deleted.\n")); | |
1819 | } | |
1820 | else | |
1821 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); | |
1822 | stat = bpstat_num (&bs, &num); | |
1823 | } | |
1824 | } | |
1825 | else if (tp->suspend.stop_signal != TARGET_SIGNAL_0) | |
1826 | { | |
1827 | printf_filtered (_("It stopped with signal %s, %s.\n"), | |
1828 | target_signal_to_name (tp->suspend.stop_signal), | |
1829 | target_signal_to_string (tp->suspend.stop_signal)); | |
1830 | } | |
1831 | ||
1832 | if (!from_tty) | |
1833 | { | |
1834 | printf_filtered (_("Type \"info stack\" or \"info " | |
1835 | "registers\" for more information.\n")); | |
1836 | } | |
1837 | } | |
1838 | \f | |
1839 | static void | |
1840 | environment_info (char *var, int from_tty) | |
1841 | { | |
1842 | if (var) | |
1843 | { | |
1844 | char *val = get_in_environ (current_inferior ()->environment, var); | |
1845 | ||
1846 | if (val) | |
1847 | { | |
1848 | puts_filtered (var); | |
1849 | puts_filtered (" = "); | |
1850 | puts_filtered (val); | |
1851 | puts_filtered ("\n"); | |
1852 | } | |
1853 | else | |
1854 | { | |
1855 | puts_filtered ("Environment variable \""); | |
1856 | puts_filtered (var); | |
1857 | puts_filtered ("\" not defined.\n"); | |
1858 | } | |
1859 | } | |
1860 | else | |
1861 | { | |
1862 | char **vector = environ_vector (current_inferior ()->environment); | |
1863 | ||
1864 | while (*vector) | |
1865 | { | |
1866 | puts_filtered (*vector++); | |
1867 | puts_filtered ("\n"); | |
1868 | } | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | static void | |
1873 | set_environment_command (char *arg, int from_tty) | |
1874 | { | |
1875 | char *p, *val, *var; | |
1876 | int nullset = 0; | |
1877 | ||
1878 | if (arg == 0) | |
1879 | error_no_arg (_("environment variable and value")); | |
1880 | ||
1881 | /* Find seperation between variable name and value. */ | |
1882 | p = (char *) strchr (arg, '='); | |
1883 | val = (char *) strchr (arg, ' '); | |
1884 | ||
1885 | if (p != 0 && val != 0) | |
1886 | { | |
1887 | /* We have both a space and an equals. If the space is before the | |
1888 | equals, walk forward over the spaces til we see a nonspace | |
1889 | (possibly the equals). */ | |
1890 | if (p > val) | |
1891 | while (*val == ' ') | |
1892 | val++; | |
1893 | ||
1894 | /* Now if the = is after the char following the spaces, | |
1895 | take the char following the spaces. */ | |
1896 | if (p > val) | |
1897 | p = val - 1; | |
1898 | } | |
1899 | else if (val != 0 && p == 0) | |
1900 | p = val; | |
1901 | ||
1902 | if (p == arg) | |
1903 | error_no_arg (_("environment variable to set")); | |
1904 | ||
1905 | if (p == 0 || p[1] == 0) | |
1906 | { | |
1907 | nullset = 1; | |
1908 | if (p == 0) | |
1909 | p = arg + strlen (arg); /* So that savestring below will work. */ | |
1910 | } | |
1911 | else | |
1912 | { | |
1913 | /* Not setting variable value to null. */ | |
1914 | val = p + 1; | |
1915 | while (*val == ' ' || *val == '\t') | |
1916 | val++; | |
1917 | } | |
1918 | ||
1919 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) | |
1920 | p--; | |
1921 | ||
1922 | var = savestring (arg, p - arg); | |
1923 | if (nullset) | |
1924 | { | |
1925 | printf_filtered (_("Setting environment variable " | |
1926 | "\"%s\" to null value.\n"), | |
1927 | var); | |
1928 | set_in_environ (current_inferior ()->environment, var, ""); | |
1929 | } | |
1930 | else | |
1931 | set_in_environ (current_inferior ()->environment, var, val); | |
1932 | xfree (var); | |
1933 | } | |
1934 | ||
1935 | static void | |
1936 | unset_environment_command (char *var, int from_tty) | |
1937 | { | |
1938 | if (var == 0) | |
1939 | { | |
1940 | /* If there is no argument, delete all environment variables. | |
1941 | Ask for confirmation if reading from the terminal. */ | |
1942 | if (!from_tty || query (_("Delete all environment variables? "))) | |
1943 | { | |
1944 | free_environ (current_inferior ()->environment); | |
1945 | current_inferior ()->environment = make_environ (); | |
1946 | } | |
1947 | } | |
1948 | else | |
1949 | unset_in_environ (current_inferior ()->environment, var); | |
1950 | } | |
1951 | ||
1952 | /* Handle the execution path (PATH variable). */ | |
1953 | ||
1954 | static const char path_var_name[] = "PATH"; | |
1955 | ||
1956 | static void | |
1957 | path_info (char *args, int from_tty) | |
1958 | { | |
1959 | puts_filtered ("Executable and object file path: "); | |
1960 | puts_filtered (get_in_environ (current_inferior ()->environment, | |
1961 | path_var_name)); | |
1962 | puts_filtered ("\n"); | |
1963 | } | |
1964 | ||
1965 | /* Add zero or more directories to the front of the execution path. */ | |
1966 | ||
1967 | static void | |
1968 | path_command (char *dirname, int from_tty) | |
1969 | { | |
1970 | char *exec_path; | |
1971 | char *env; | |
1972 | ||
1973 | dont_repeat (); | |
1974 | env = get_in_environ (current_inferior ()->environment, path_var_name); | |
1975 | /* Can be null if path is not set. */ | |
1976 | if (!env) | |
1977 | env = ""; | |
1978 | exec_path = xstrdup (env); | |
1979 | mod_path (dirname, &exec_path); | |
1980 | set_in_environ (current_inferior ()->environment, path_var_name, exec_path); | |
1981 | xfree (exec_path); | |
1982 | if (from_tty) | |
1983 | path_info ((char *) NULL, from_tty); | |
1984 | } | |
1985 | \f | |
1986 | ||
1987 | /* Print out the machine register regnum. If regnum is -1, print all | |
1988 | registers (print_all == 1) or all non-float and non-vector | |
1989 | registers (print_all == 0). | |
1990 | ||
1991 | For most machines, having all_registers_info() print the | |
1992 | register(s) one per line is good enough. If a different format is | |
1993 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
1994 | regs), or there is an existing convention for showing all the | |
1995 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
1996 | provide that format. */ | |
1997 | ||
1998 | void | |
1999 | default_print_registers_info (struct gdbarch *gdbarch, | |
2000 | struct ui_file *file, | |
2001 | struct frame_info *frame, | |
2002 | int regnum, int print_all) | |
2003 | { | |
2004 | int i; | |
2005 | const int numregs = gdbarch_num_regs (gdbarch) | |
2006 | + gdbarch_num_pseudo_regs (gdbarch); | |
2007 | ||
2008 | for (i = 0; i < numregs; i++) | |
2009 | { | |
2010 | struct type *regtype; | |
2011 | struct value *val; | |
2012 | ||
2013 | /* Decide between printing all regs, non-float / vector regs, or | |
2014 | specific reg. */ | |
2015 | if (regnum == -1) | |
2016 | { | |
2017 | if (print_all) | |
2018 | { | |
2019 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
2020 | continue; | |
2021 | } | |
2022 | else | |
2023 | { | |
2024 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
2025 | continue; | |
2026 | } | |
2027 | } | |
2028 | else | |
2029 | { | |
2030 | if (i != regnum) | |
2031 | continue; | |
2032 | } | |
2033 | ||
2034 | /* If the register name is empty, it is undefined for this | |
2035 | processor, so don't display anything. */ | |
2036 | if (gdbarch_register_name (gdbarch, i) == NULL | |
2037 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
2038 | continue; | |
2039 | ||
2040 | fputs_filtered (gdbarch_register_name (gdbarch, i), file); | |
2041 | print_spaces_filtered (15 - strlen (gdbarch_register_name | |
2042 | (gdbarch, i)), file); | |
2043 | ||
2044 | regtype = register_type (gdbarch, i); | |
2045 | val = allocate_value (regtype); | |
2046 | ||
2047 | /* Get the data in raw format. */ | |
2048 | if (! frame_register_read (frame, i, value_contents_raw (val))) | |
2049 | { | |
2050 | fprintf_filtered (file, "*value not available*\n"); | |
2051 | continue; | |
2052 | } | |
2053 | ||
2054 | /* If virtual format is floating, print it that way, and in raw | |
2055 | hex. */ | |
2056 | if (TYPE_CODE (regtype) == TYPE_CODE_FLT | |
2057 | || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT) | |
2058 | { | |
2059 | int j; | |
2060 | struct value_print_options opts; | |
2061 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
2062 | ||
2063 | get_user_print_options (&opts); | |
2064 | opts.deref_ref = 1; | |
2065 | ||
2066 | val_print (regtype, | |
2067 | value_contents_for_printing (val), | |
2068 | value_embedded_offset (val), 0, | |
2069 | file, 0, val, &opts, current_language); | |
2070 | ||
2071 | fprintf_filtered (file, "\t(raw 0x"); | |
2072 | for (j = 0; j < register_size (gdbarch, i); j++) | |
2073 | { | |
2074 | int idx; | |
2075 | ||
2076 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) | |
2077 | idx = j; | |
2078 | else | |
2079 | idx = register_size (gdbarch, i) - 1 - j; | |
2080 | fprintf_filtered (file, "%02x", (unsigned char) valaddr[idx]); | |
2081 | } | |
2082 | fprintf_filtered (file, ")"); | |
2083 | } | |
2084 | else | |
2085 | { | |
2086 | struct value_print_options opts; | |
2087 | ||
2088 | /* Print the register in hex. */ | |
2089 | get_formatted_print_options (&opts, 'x'); | |
2090 | opts.deref_ref = 1; | |
2091 | val_print (regtype, | |
2092 | value_contents_for_printing (val), | |
2093 | value_embedded_offset (val), 0, | |
2094 | file, 0, val, &opts, current_language); | |
2095 | /* If not a vector register, print it also according to its | |
2096 | natural format. */ | |
2097 | if (TYPE_VECTOR (regtype) == 0) | |
2098 | { | |
2099 | get_user_print_options (&opts); | |
2100 | opts.deref_ref = 1; | |
2101 | fprintf_filtered (file, "\t"); | |
2102 | val_print (regtype, | |
2103 | value_contents_for_printing (val), | |
2104 | value_embedded_offset (val), 0, | |
2105 | file, 0, val, &opts, current_language); | |
2106 | } | |
2107 | } | |
2108 | ||
2109 | fprintf_filtered (file, "\n"); | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | void | |
2114 | registers_info (char *addr_exp, int fpregs) | |
2115 | { | |
2116 | struct frame_info *frame; | |
2117 | struct gdbarch *gdbarch; | |
2118 | ||
2119 | if (!target_has_registers) | |
2120 | error (_("The program has no registers now.")); | |
2121 | frame = get_selected_frame (NULL); | |
2122 | gdbarch = get_frame_arch (frame); | |
2123 | ||
2124 | if (!addr_exp) | |
2125 | { | |
2126 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2127 | frame, -1, fpregs); | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | while (*addr_exp != '\0') | |
2132 | { | |
2133 | char *start; | |
2134 | const char *end; | |
2135 | ||
2136 | /* Keep skipping leading white space. */ | |
2137 | if (isspace ((*addr_exp))) | |
2138 | { | |
2139 | addr_exp++; | |
2140 | continue; | |
2141 | } | |
2142 | ||
2143 | /* Discard any leading ``$''. Check that there is something | |
2144 | resembling a register following it. */ | |
2145 | if (addr_exp[0] == '$') | |
2146 | addr_exp++; | |
2147 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
2148 | error (_("Missing register name")); | |
2149 | ||
2150 | /* Find the start/end of this register name/num/group. */ | |
2151 | start = addr_exp; | |
2152 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2153 | addr_exp++; | |
2154 | end = addr_exp; | |
2155 | ||
2156 | /* Figure out what we've found and display it. */ | |
2157 | ||
2158 | /* A register name? */ | |
2159 | { | |
2160 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); | |
2161 | ||
2162 | if (regnum >= 0) | |
2163 | { | |
2164 | /* User registers lie completely outside of the range of | |
2165 | normal registers. Catch them early so that the target | |
2166 | never sees them. */ | |
2167 | if (regnum >= gdbarch_num_regs (gdbarch) | |
2168 | + gdbarch_num_pseudo_regs (gdbarch)) | |
2169 | { | |
2170 | struct value_print_options opts; | |
2171 | struct value *val = value_of_user_reg (regnum, frame); | |
2172 | ||
2173 | printf_filtered ("%s: ", start); | |
2174 | get_formatted_print_options (&opts, 'x'); | |
2175 | val_print_scalar_formatted (check_typedef (value_type (val)), | |
2176 | value_contents_for_printing (val), | |
2177 | value_embedded_offset (val), | |
2178 | val, | |
2179 | &opts, 0, gdb_stdout); | |
2180 | printf_filtered ("\n"); | |
2181 | } | |
2182 | else | |
2183 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2184 | frame, regnum, fpregs); | |
2185 | continue; | |
2186 | } | |
2187 | } | |
2188 | ||
2189 | /* A register group? */ | |
2190 | { | |
2191 | struct reggroup *group; | |
2192 | ||
2193 | for (group = reggroup_next (gdbarch, NULL); | |
2194 | group != NULL; | |
2195 | group = reggroup_next (gdbarch, group)) | |
2196 | { | |
2197 | /* Don't bother with a length check. Should the user | |
2198 | enter a short register group name, go with the first | |
2199 | group that matches. */ | |
2200 | if (strncmp (start, reggroup_name (group), end - start) == 0) | |
2201 | break; | |
2202 | } | |
2203 | if (group != NULL) | |
2204 | { | |
2205 | int regnum; | |
2206 | ||
2207 | for (regnum = 0; | |
2208 | regnum < gdbarch_num_regs (gdbarch) | |
2209 | + gdbarch_num_pseudo_regs (gdbarch); | |
2210 | regnum++) | |
2211 | { | |
2212 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) | |
2213 | gdbarch_print_registers_info (gdbarch, | |
2214 | gdb_stdout, frame, | |
2215 | regnum, fpregs); | |
2216 | } | |
2217 | continue; | |
2218 | } | |
2219 | } | |
2220 | ||
2221 | /* Nothing matched. */ | |
2222 | error (_("Invalid register `%.*s'"), (int) (end - start), start); | |
2223 | } | |
2224 | } | |
2225 | ||
2226 | void | |
2227 | all_registers_info (char *addr_exp, int from_tty) | |
2228 | { | |
2229 | registers_info (addr_exp, 1); | |
2230 | } | |
2231 | ||
2232 | static void | |
2233 | nofp_registers_info (char *addr_exp, int from_tty) | |
2234 | { | |
2235 | registers_info (addr_exp, 0); | |
2236 | } | |
2237 | ||
2238 | static void | |
2239 | print_vector_info (struct ui_file *file, | |
2240 | struct frame_info *frame, const char *args) | |
2241 | { | |
2242 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
2243 | ||
2244 | if (gdbarch_print_vector_info_p (gdbarch)) | |
2245 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2246 | else | |
2247 | { | |
2248 | int regnum; | |
2249 | int printed_something = 0; | |
2250 | ||
2251 | for (regnum = 0; | |
2252 | regnum < gdbarch_num_regs (gdbarch) | |
2253 | + gdbarch_num_pseudo_regs (gdbarch); | |
2254 | regnum++) | |
2255 | { | |
2256 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) | |
2257 | { | |
2258 | printed_something = 1; | |
2259 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
2260 | } | |
2261 | } | |
2262 | if (!printed_something) | |
2263 | fprintf_filtered (file, "No vector information\n"); | |
2264 | } | |
2265 | } | |
2266 | ||
2267 | static void | |
2268 | vector_info (char *args, int from_tty) | |
2269 | { | |
2270 | if (!target_has_registers) | |
2271 | error (_("The program has no registers now.")); | |
2272 | ||
2273 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); | |
2274 | } | |
2275 | \f | |
2276 | /* Kill the inferior process. Make us have no inferior. */ | |
2277 | ||
2278 | static void | |
2279 | kill_command (char *arg, int from_tty) | |
2280 | { | |
2281 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2282 | It should be a distinct flag that indicates that a target is active, cuz | |
2283 | some targets don't have processes! */ | |
2284 | ||
2285 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2286 | error (_("The program is not being run.")); | |
2287 | if (!query (_("Kill the program being debugged? "))) | |
2288 | error (_("Not confirmed.")); | |
2289 | target_kill (); | |
2290 | ||
2291 | /* If we still have other inferiors to debug, then don't mess with | |
2292 | with their threads. */ | |
2293 | if (!have_inferiors ()) | |
2294 | { | |
2295 | init_thread_list (); /* Destroy thread info. */ | |
2296 | ||
2297 | /* Killing off the inferior can leave us with a core file. If | |
2298 | so, print the state we are left in. */ | |
2299 | if (target_has_stack) | |
2300 | { | |
2301 | printf_filtered (_("In %s,\n"), target_longname); | |
2302 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); | |
2303 | } | |
2304 | } | |
2305 | bfd_cache_close_all (); | |
2306 | } | |
2307 | ||
2308 | /* Used in `attach&' command. ARG is a point to an integer | |
2309 | representing a process id. Proceed threads of this process iff | |
2310 | they stopped due to debugger request, and when they did, they | |
2311 | reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads | |
2312 | that have been explicitly been told to stop. */ | |
2313 | ||
2314 | static int | |
2315 | proceed_after_attach_callback (struct thread_info *thread, | |
2316 | void *arg) | |
2317 | { | |
2318 | int pid = * (int *) arg; | |
2319 | ||
2320 | if (ptid_get_pid (thread->ptid) == pid | |
2321 | && !is_exited (thread->ptid) | |
2322 | && !is_executing (thread->ptid) | |
2323 | && !thread->stop_requested | |
2324 | && thread->suspend.stop_signal == TARGET_SIGNAL_0) | |
2325 | { | |
2326 | switch_to_thread (thread->ptid); | |
2327 | clear_proceed_status (); | |
2328 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); | |
2329 | } | |
2330 | ||
2331 | return 0; | |
2332 | } | |
2333 | ||
2334 | static void | |
2335 | proceed_after_attach (int pid) | |
2336 | { | |
2337 | /* Don't error out if the current thread is running, because | |
2338 | there may be other stopped threads. */ | |
2339 | struct cleanup *old_chain; | |
2340 | ||
2341 | /* Backup current thread and selected frame. */ | |
2342 | old_chain = make_cleanup_restore_current_thread (); | |
2343 | ||
2344 | iterate_over_threads (proceed_after_attach_callback, &pid); | |
2345 | ||
2346 | /* Restore selected ptid. */ | |
2347 | do_cleanups (old_chain); | |
2348 | } | |
2349 | ||
2350 | /* | |
2351 | * TODO: | |
2352 | * Should save/restore the tty state since it might be that the | |
2353 | * program to be debugged was started on this tty and it wants | |
2354 | * the tty in some state other than what we want. If it's running | |
2355 | * on another terminal or without a terminal, then saving and | |
2356 | * restoring the tty state is a harmless no-op. | |
2357 | * This only needs to be done if we are attaching to a process. | |
2358 | */ | |
2359 | ||
2360 | /* attach_command -- | |
2361 | takes a program started up outside of gdb and ``attaches'' to it. | |
2362 | This stops it cold in its tracks and allows us to start debugging it. | |
2363 | and wait for the trace-trap that results from attaching. */ | |
2364 | ||
2365 | static void | |
2366 | attach_command_post_wait (char *args, int from_tty, int async_exec) | |
2367 | { | |
2368 | char *exec_file; | |
2369 | char *full_exec_path = NULL; | |
2370 | struct inferior *inferior; | |
2371 | ||
2372 | inferior = current_inferior (); | |
2373 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2374 | ||
2375 | /* If no exec file is yet known, try to determine it from the | |
2376 | process itself. */ | |
2377 | exec_file = (char *) get_exec_file (0); | |
2378 | if (!exec_file) | |
2379 | { | |
2380 | exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid)); | |
2381 | if (exec_file) | |
2382 | { | |
2383 | /* It's possible we don't have a full path, but rather just a | |
2384 | filename. Some targets, such as HP-UX, don't provide the | |
2385 | full path, sigh. | |
2386 | ||
2387 | Attempt to qualify the filename against the source path. | |
2388 | (If that fails, we'll just fall back on the original | |
2389 | filename. Not much more we can do...) */ | |
2390 | ||
2391 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
2392 | full_exec_path = xstrdup (exec_file); | |
2393 | ||
2394 | exec_file_attach (full_exec_path, from_tty); | |
2395 | symbol_file_add_main (full_exec_path, from_tty); | |
2396 | } | |
2397 | } | |
2398 | else | |
2399 | { | |
2400 | reopen_exec_file (); | |
2401 | reread_symbols (); | |
2402 | } | |
2403 | ||
2404 | /* Take any necessary post-attaching actions for this platform. */ | |
2405 | target_post_attach (PIDGET (inferior_ptid)); | |
2406 | ||
2407 | post_create_inferior (¤t_target, from_tty); | |
2408 | ||
2409 | /* Install inferior's terminal modes. */ | |
2410 | target_terminal_inferior (); | |
2411 | ||
2412 | if (async_exec) | |
2413 | { | |
2414 | /* The user requested an `attach&', so be sure to leave threads | |
2415 | that didn't get a signal running. */ | |
2416 | ||
2417 | /* Immediatelly resume all suspended threads of this inferior, | |
2418 | and this inferior only. This should have no effect on | |
2419 | already running threads. If a thread has been stopped with a | |
2420 | signal, leave it be. */ | |
2421 | if (non_stop) | |
2422 | proceed_after_attach (inferior->pid); | |
2423 | else | |
2424 | { | |
2425 | if (inferior_thread ()->suspend.stop_signal == TARGET_SIGNAL_0) | |
2426 | { | |
2427 | clear_proceed_status (); | |
2428 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); | |
2429 | } | |
2430 | } | |
2431 | } | |
2432 | else | |
2433 | { | |
2434 | /* The user requested a plain `attach', so be sure to leave | |
2435 | the inferior stopped. */ | |
2436 | ||
2437 | if (target_can_async_p ()) | |
2438 | async_enable_stdin (); | |
2439 | ||
2440 | /* At least the current thread is already stopped. */ | |
2441 | ||
2442 | /* In all-stop, by definition, all threads have to be already | |
2443 | stopped at this point. In non-stop, however, although the | |
2444 | selected thread is stopped, others may still be executing. | |
2445 | Be sure to explicitly stop all threads of the process. This | |
2446 | should have no effect on already stopped threads. */ | |
2447 | if (non_stop) | |
2448 | target_stop (pid_to_ptid (inferior->pid)); | |
2449 | ||
2450 | /* Tell the user/frontend where we're stopped. */ | |
2451 | normal_stop (); | |
2452 | if (deprecated_attach_hook) | |
2453 | deprecated_attach_hook (); | |
2454 | } | |
2455 | } | |
2456 | ||
2457 | struct attach_command_continuation_args | |
2458 | { | |
2459 | char *args; | |
2460 | int from_tty; | |
2461 | int async_exec; | |
2462 | }; | |
2463 | ||
2464 | static void | |
2465 | attach_command_continuation (void *args, int err) | |
2466 | { | |
2467 | struct attach_command_continuation_args *a = args; | |
2468 | ||
2469 | if (err) | |
2470 | return; | |
2471 | ||
2472 | attach_command_post_wait (a->args, a->from_tty, a->async_exec); | |
2473 | } | |
2474 | ||
2475 | static void | |
2476 | attach_command_continuation_free_args (void *args) | |
2477 | { | |
2478 | struct attach_command_continuation_args *a = args; | |
2479 | ||
2480 | xfree (a->args); | |
2481 | xfree (a); | |
2482 | } | |
2483 | ||
2484 | void | |
2485 | attach_command (char *args, int from_tty) | |
2486 | { | |
2487 | int async_exec = 0; | |
2488 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
2489 | ||
2490 | dont_repeat (); /* Not for the faint of heart */ | |
2491 | ||
2492 | if (gdbarch_has_global_solist (target_gdbarch)) | |
2493 | /* Don't complain if all processes share the same symbol | |
2494 | space. */ | |
2495 | ; | |
2496 | else if (target_has_execution) | |
2497 | { | |
2498 | if (query (_("A program is being debugged already. Kill it? "))) | |
2499 | target_kill (); | |
2500 | else | |
2501 | error (_("Not killed.")); | |
2502 | } | |
2503 | ||
2504 | /* Clean up any leftovers from other runs. Some other things from | |
2505 | this function should probably be moved into target_pre_inferior. */ | |
2506 | target_pre_inferior (from_tty); | |
2507 | ||
2508 | if (non_stop && !target_supports_non_stop ()) | |
2509 | error (_("Cannot attach to this target in non-stop mode")); | |
2510 | ||
2511 | if (args) | |
2512 | { | |
2513 | async_exec = strip_bg_char (&args); | |
2514 | ||
2515 | /* If we get a request for running in the bg but the target | |
2516 | doesn't support it, error out. */ | |
2517 | if (async_exec && !target_can_async_p ()) | |
2518 | error (_("Asynchronous execution not supported on this target.")); | |
2519 | } | |
2520 | ||
2521 | /* If we don't get a request of running in the bg, then we need | |
2522 | to simulate synchronous (fg) execution. */ | |
2523 | if (!async_exec && target_can_async_p ()) | |
2524 | { | |
2525 | /* Simulate synchronous execution. */ | |
2526 | async_disable_stdin (); | |
2527 | make_cleanup ((make_cleanup_ftype *)async_enable_stdin, NULL); | |
2528 | } | |
2529 | ||
2530 | target_attach (args, from_tty); | |
2531 | ||
2532 | /* Set up the "saved terminal modes" of the inferior | |
2533 | based on what modes we are starting it with. */ | |
2534 | target_terminal_init (); | |
2535 | ||
2536 | /* Set up execution context to know that we should return from | |
2537 | wait_for_inferior as soon as the target reports a stop. */ | |
2538 | init_wait_for_inferior (); | |
2539 | clear_proceed_status (); | |
2540 | ||
2541 | if (non_stop) | |
2542 | { | |
2543 | /* If we find that the current thread isn't stopped, explicitly | |
2544 | do so now, because we're going to install breakpoints and | |
2545 | poke at memory. */ | |
2546 | ||
2547 | if (async_exec) | |
2548 | /* The user requested an `attach&'; stop just one thread. */ | |
2549 | target_stop (inferior_ptid); | |
2550 | else | |
2551 | /* The user requested an `attach', so stop all threads of this | |
2552 | inferior. */ | |
2553 | target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid))); | |
2554 | } | |
2555 | ||
2556 | /* Some system don't generate traps when attaching to inferior. | |
2557 | E.g. Mach 3 or GNU hurd. */ | |
2558 | if (!target_attach_no_wait) | |
2559 | { | |
2560 | struct inferior *inferior = current_inferior (); | |
2561 | ||
2562 | /* Careful here. See comments in inferior.h. Basically some | |
2563 | OSes don't ignore SIGSTOPs on continue requests anymore. We | |
2564 | need a way for handle_inferior_event to reset the stop_signal | |
2565 | variable after an attach, and this is what | |
2566 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
2567 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; | |
2568 | ||
2569 | if (target_can_async_p ()) | |
2570 | { | |
2571 | /* sync_execution mode. Wait for stop. */ | |
2572 | struct attach_command_continuation_args *a; | |
2573 | ||
2574 | a = xmalloc (sizeof (*a)); | |
2575 | a->args = xstrdup (args); | |
2576 | a->from_tty = from_tty; | |
2577 | a->async_exec = async_exec; | |
2578 | add_inferior_continuation (attach_command_continuation, a, | |
2579 | attach_command_continuation_free_args); | |
2580 | discard_cleanups (back_to); | |
2581 | return; | |
2582 | } | |
2583 | ||
2584 | wait_for_inferior (); | |
2585 | } | |
2586 | ||
2587 | attach_command_post_wait (args, from_tty, async_exec); | |
2588 | discard_cleanups (back_to); | |
2589 | } | |
2590 | ||
2591 | /* We had just found out that the target was already attached to an | |
2592 | inferior. PTID points at a thread of this new inferior, that is | |
2593 | the most likely to be stopped right now, but not necessarily so. | |
2594 | The new inferior is assumed to be already added to the inferior | |
2595 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2596 | this inferior running, except those we've explicitly seen reported | |
2597 | as stopped. */ | |
2598 | ||
2599 | void | |
2600 | notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) | |
2601 | { | |
2602 | struct cleanup* old_chain; | |
2603 | int async_exec; | |
2604 | ||
2605 | old_chain = make_cleanup (null_cleanup, NULL); | |
2606 | ||
2607 | /* If in non-stop, leave threads as running as they were. If | |
2608 | they're stopped for some reason other than us telling it to, the | |
2609 | target reports a signal != TARGET_SIGNAL_0. We don't try to | |
2610 | resume threads with such a stop signal. */ | |
2611 | async_exec = non_stop; | |
2612 | ||
2613 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2614 | make_cleanup_restore_current_thread (); | |
2615 | ||
2616 | switch_to_thread (ptid); | |
2617 | ||
2618 | /* When we "notice" a new inferior we need to do all the things we | |
2619 | would normally do if we had just attached to it. */ | |
2620 | ||
2621 | if (is_executing (inferior_ptid)) | |
2622 | { | |
2623 | struct inferior *inferior = current_inferior (); | |
2624 | ||
2625 | /* We're going to install breakpoints, and poke at memory, | |
2626 | ensure that the inferior is stopped for a moment while we do | |
2627 | that. */ | |
2628 | target_stop (inferior_ptid); | |
2629 | ||
2630 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; | |
2631 | ||
2632 | /* Wait for stop before proceeding. */ | |
2633 | if (target_can_async_p ()) | |
2634 | { | |
2635 | struct attach_command_continuation_args *a; | |
2636 | ||
2637 | a = xmalloc (sizeof (*a)); | |
2638 | a->args = xstrdup (""); | |
2639 | a->from_tty = from_tty; | |
2640 | a->async_exec = async_exec; | |
2641 | add_inferior_continuation (attach_command_continuation, a, | |
2642 | attach_command_continuation_free_args); | |
2643 | ||
2644 | do_cleanups (old_chain); | |
2645 | return; | |
2646 | } | |
2647 | else | |
2648 | wait_for_inferior (); | |
2649 | } | |
2650 | ||
2651 | async_exec = leave_running; | |
2652 | attach_command_post_wait ("" /* args */, from_tty, async_exec); | |
2653 | ||
2654 | do_cleanups (old_chain); | |
2655 | } | |
2656 | ||
2657 | /* | |
2658 | * detach_command -- | |
2659 | * takes a program previously attached to and detaches it. | |
2660 | * The program resumes execution and will no longer stop | |
2661 | * on signals, etc. We better not have left any breakpoints | |
2662 | * in the program or it'll die when it hits one. For this | |
2663 | * to work, it may be necessary for the process to have been | |
2664 | * previously attached. It *might* work if the program was | |
2665 | * started via the normal ptrace (PTRACE_TRACEME). | |
2666 | */ | |
2667 | ||
2668 | void | |
2669 | detach_command (char *args, int from_tty) | |
2670 | { | |
2671 | dont_repeat (); /* Not for the faint of heart. */ | |
2672 | ||
2673 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2674 | error (_("The program is not being run.")); | |
2675 | ||
2676 | disconnect_tracing (from_tty); | |
2677 | ||
2678 | target_detach (args, from_tty); | |
2679 | ||
2680 | /* If the solist is global across inferiors, don't clear it when we | |
2681 | detach from a single inferior. */ | |
2682 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
2683 | no_shared_libraries (NULL, from_tty); | |
2684 | ||
2685 | /* If we still have inferiors to debug, then don't mess with their | |
2686 | threads. */ | |
2687 | if (!have_inferiors ()) | |
2688 | init_thread_list (); | |
2689 | ||
2690 | if (deprecated_detach_hook) | |
2691 | deprecated_detach_hook (); | |
2692 | } | |
2693 | ||
2694 | /* Disconnect from the current target without resuming it (leaving it | |
2695 | waiting for a debugger). | |
2696 | ||
2697 | We'd better not have left any breakpoints in the program or the | |
2698 | next debugger will get confused. Currently only supported for some | |
2699 | remote targets, since the normal attach mechanisms don't work on | |
2700 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
2701 | ||
2702 | static void | |
2703 | disconnect_command (char *args, int from_tty) | |
2704 | { | |
2705 | dont_repeat (); /* Not for the faint of heart. */ | |
2706 | disconnect_tracing (from_tty); | |
2707 | target_disconnect (args, from_tty); | |
2708 | no_shared_libraries (NULL, from_tty); | |
2709 | init_thread_list (); | |
2710 | if (deprecated_detach_hook) | |
2711 | deprecated_detach_hook (); | |
2712 | } | |
2713 | ||
2714 | void | |
2715 | interrupt_target_1 (int all_threads) | |
2716 | { | |
2717 | ptid_t ptid; | |
2718 | ||
2719 | if (all_threads) | |
2720 | ptid = minus_one_ptid; | |
2721 | else | |
2722 | ptid = inferior_ptid; | |
2723 | target_stop (ptid); | |
2724 | ||
2725 | /* Tag the thread as having been explicitly requested to stop, so | |
2726 | other parts of gdb know not to resume this thread automatically, | |
2727 | if it was stopped due to an internal event. Limit this to | |
2728 | non-stop mode, as when debugging a multi-threaded application in | |
2729 | all-stop mode, we will only get one stop event --- it's undefined | |
2730 | which thread will report the event. */ | |
2731 | if (non_stop) | |
2732 | set_stop_requested (ptid, 1); | |
2733 | } | |
2734 | ||
2735 | /* Stop the execution of the target while running in async mode, in | |
2736 | the backgound. In all-stop, stop the whole process. In non-stop | |
2737 | mode, stop the current thread only by default, or stop all threads | |
2738 | if the `-a' switch is used. */ | |
2739 | ||
2740 | /* interrupt [-a] */ | |
2741 | void | |
2742 | interrupt_target_command (char *args, int from_tty) | |
2743 | { | |
2744 | if (target_can_async_p ()) | |
2745 | { | |
2746 | int all_threads = 0; | |
2747 | ||
2748 | dont_repeat (); /* Not for the faint of heart. */ | |
2749 | ||
2750 | if (args != NULL | |
2751 | && strncmp (args, "-a", sizeof ("-a") - 1) == 0) | |
2752 | all_threads = 1; | |
2753 | ||
2754 | if (!non_stop && all_threads) | |
2755 | error (_("-a is meaningless in all-stop mode.")); | |
2756 | ||
2757 | interrupt_target_1 (all_threads); | |
2758 | } | |
2759 | } | |
2760 | ||
2761 | static void | |
2762 | print_float_info (struct ui_file *file, | |
2763 | struct frame_info *frame, const char *args) | |
2764 | { | |
2765 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
2766 | ||
2767 | if (gdbarch_print_float_info_p (gdbarch)) | |
2768 | gdbarch_print_float_info (gdbarch, file, frame, args); | |
2769 | else | |
2770 | { | |
2771 | int regnum; | |
2772 | int printed_something = 0; | |
2773 | ||
2774 | for (regnum = 0; | |
2775 | regnum < gdbarch_num_regs (gdbarch) | |
2776 | + gdbarch_num_pseudo_regs (gdbarch); | |
2777 | regnum++) | |
2778 | { | |
2779 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) | |
2780 | { | |
2781 | printed_something = 1; | |
2782 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
2783 | } | |
2784 | } | |
2785 | if (!printed_something) | |
2786 | fprintf_filtered (file, "No floating-point info " | |
2787 | "available for this processor.\n"); | |
2788 | } | |
2789 | } | |
2790 | ||
2791 | static void | |
2792 | float_info (char *args, int from_tty) | |
2793 | { | |
2794 | if (!target_has_registers) | |
2795 | error (_("The program has no registers now.")); | |
2796 | ||
2797 | print_float_info (gdb_stdout, get_selected_frame (NULL), args); | |
2798 | } | |
2799 | \f | |
2800 | static void | |
2801 | unset_command (char *args, int from_tty) | |
2802 | { | |
2803 | printf_filtered (_("\"unset\" must be followed by the " | |
2804 | "name of an unset subcommand.\n")); | |
2805 | help_list (unsetlist, "unset ", -1, gdb_stdout); | |
2806 | } | |
2807 | ||
2808 | void | |
2809 | _initialize_infcmd (void) | |
2810 | { | |
2811 | struct cmd_list_element *c = NULL; | |
2812 | ||
2813 | /* Add the filename of the terminal connected to inferior I/O. */ | |
2814 | add_setshow_filename_cmd ("inferior-tty", class_run, | |
2815 | &inferior_io_terminal_scratch, _("\ | |
2816 | Set terminal for future runs of program being debugged."), _("\ | |
2817 | Show terminal for future runs of program being debugged."), _("\ | |
2818 | Usage: set inferior-tty /dev/pts/1"), | |
2819 | set_inferior_tty_command, | |
2820 | show_inferior_tty_command, | |
2821 | &setlist, &showlist); | |
2822 | add_com_alias ("tty", "set inferior-tty", class_alias, 0); | |
2823 | ||
2824 | add_setshow_optional_filename_cmd ("args", class_run, | |
2825 | &inferior_args_scratch, _("\ | |
2826 | Set argument list to give program being debugged when it is started."), _("\ | |
2827 | Show argument list to give program being debugged when it is started."), _("\ | |
2828 | Follow this command with any number of args, to be passed to the program."), | |
2829 | set_args_command, | |
2830 | show_args_command, | |
2831 | &setlist, &showlist); | |
2832 | ||
2833 | c = add_cmd ("environment", no_class, environment_info, _("\ | |
2834 | The environment to give the program, or one variable's value.\n\ | |
2835 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
2836 | give the program being debugged. With no arguments, prints the entire\n\ | |
2837 | environment to be given to the program."), &showlist); | |
2838 | set_cmd_completer (c, noop_completer); | |
2839 | ||
2840 | add_prefix_cmd ("unset", no_class, unset_command, | |
2841 | _("Complement to certain \"set\" commands."), | |
2842 | &unsetlist, "unset ", 0, &cmdlist); | |
2843 | ||
2844 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ | |
2845 | Cancel environment variable VAR for the program.\n\ | |
2846 | This does not affect the program until the next \"run\" command."), | |
2847 | &unsetlist); | |
2848 | set_cmd_completer (c, noop_completer); | |
2849 | ||
2850 | c = add_cmd ("environment", class_run, set_environment_command, _("\ | |
2851 | Set environment variable value to give the program.\n\ | |
2852 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
2853 | VALUES of environment variables are uninterpreted strings.\n\ | |
2854 | This does not affect the program until the next \"run\" command."), | |
2855 | &setlist); | |
2856 | set_cmd_completer (c, noop_completer); | |
2857 | ||
2858 | c = add_com ("path", class_files, path_command, _("\ | |
2859 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
2860 | $cwd in the path means the current working directory.\n\ | |
2861 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
2862 | directories, separated by colons. These directories are searched to find\n\ | |
2863 | fully linked executable files and separately compiled object files as \ | |
2864 | needed.")); | |
2865 | set_cmd_completer (c, filename_completer); | |
2866 | ||
2867 | c = add_cmd ("paths", no_class, path_info, _("\ | |
2868 | Current search path for finding object files.\n\ | |
2869 | $cwd in the path means the current working directory.\n\ | |
2870 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
2871 | directories, separated by colons. These directories are searched to find\n\ | |
2872 | fully linked executable files and separately compiled object files as \ | |
2873 | needed."), | |
2874 | &showlist); | |
2875 | set_cmd_completer (c, noop_completer); | |
2876 | ||
2877 | add_prefix_cmd ("kill", class_run, kill_command, | |
2878 | _("Kill execution of program being debugged."), | |
2879 | &killlist, "kill ", 0, &cmdlist); | |
2880 | ||
2881 | add_com ("attach", class_run, attach_command, _("\ | |
2882 | Attach to a process or file outside of GDB.\n\ | |
2883 | This command attaches to another target, of the same type as your last\n\ | |
2884 | \"target\" command (\"info files\" will show your target stack).\n\ | |
2885 | The command may take as argument a process id or a device file.\n\ | |
2886 | For a process id, you must have permission to send the process a signal,\n\ | |
2887 | and it must have the same effective uid as the debugger.\n\ | |
2888 | When using \"attach\" with a process id, the debugger finds the\n\ | |
2889 | program running in the process, looking first in the current working\n\ | |
2890 | directory, or (if not found there) using the source file search path\n\ | |
2891 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
2892 | to specify the program, and to load its symbol table.")); | |
2893 | ||
2894 | add_prefix_cmd ("detach", class_run, detach_command, _("\ | |
2895 | Detach a process or file previously attached.\n\ | |
2896 | If a process, it is no longer traced, and it continues its execution. If\n\ | |
2897 | you were debugging a file, the file is closed and gdb no longer accesses it."), | |
2898 | &detachlist, "detach ", 0, &cmdlist); | |
2899 | ||
2900 | add_com ("disconnect", class_run, disconnect_command, _("\ | |
2901 | Disconnect from a target.\n\ | |
2902 | The target will wait for another debugger to connect. Not available for\n\ | |
2903 | all targets.")); | |
2904 | ||
2905 | add_com ("signal", class_run, signal_command, _("\ | |
2906 | Continue program giving it signal specified by the argument.\n\ | |
2907 | An argument of \"0\" means continue program without giving it a signal.")); | |
2908 | ||
2909 | add_com ("stepi", class_run, stepi_command, _("\ | |
2910 | Step one instruction exactly.\n\ | |
2911 | Argument N means do this N times (or till program stops for another \ | |
2912 | reason).")); | |
2913 | add_com_alias ("si", "stepi", class_alias, 0); | |
2914 | ||
2915 | add_com ("nexti", class_run, nexti_command, _("\ | |
2916 | Step one instruction, but proceed through subroutine calls.\n\ | |
2917 | Argument N means do this N times (or till program stops for another \ | |
2918 | reason).")); | |
2919 | add_com_alias ("ni", "nexti", class_alias, 0); | |
2920 | ||
2921 | add_com ("finish", class_run, finish_command, _("\ | |
2922 | Execute until selected stack frame returns.\n\ | |
2923 | Upon return, the value returned is printed and put in the value history.")); | |
2924 | add_com_alias ("fin", "finish", class_run, 1); | |
2925 | ||
2926 | add_com ("next", class_run, next_command, _("\ | |
2927 | Step program, proceeding through subroutine calls.\n\ | |
2928 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
2929 | when they do, the call is treated as one instruction.\n\ | |
2930 | Argument N means do this N times (or till program stops for another \ | |
2931 | reason).")); | |
2932 | add_com_alias ("n", "next", class_run, 1); | |
2933 | if (xdb_commands) | |
2934 | add_com_alias ("S", "next", class_run, 1); | |
2935 | ||
2936 | add_com ("step", class_run, step_command, _("\ | |
2937 | Step program until it reaches a different source line.\n\ | |
2938 | Argument N means do this N times (or till program stops for another \ | |
2939 | reason).")); | |
2940 | add_com_alias ("s", "step", class_run, 1); | |
2941 | ||
2942 | c = add_com ("until", class_run, until_command, _("\ | |
2943 | Execute until the program reaches a source line greater than the current\n\ | |
2944 | or a specified location (same args as break command) within the current \ | |
2945 | frame.")); | |
2946 | set_cmd_completer (c, location_completer); | |
2947 | add_com_alias ("u", "until", class_run, 1); | |
2948 | ||
2949 | c = add_com ("advance", class_run, advance_command, _("\ | |
2950 | Continue the program up to the given location (same form as args for break \ | |
2951 | command).\n\ | |
2952 | Execution will also stop upon exit from the current stack frame.")); | |
2953 | set_cmd_completer (c, location_completer); | |
2954 | ||
2955 | c = add_com ("jump", class_run, jump_command, _("\ | |
2956 | Continue program being debugged at specified line or address.\n\ | |
2957 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ | |
2958 | for an address to start at.")); | |
2959 | set_cmd_completer (c, location_completer); | |
2960 | ||
2961 | if (xdb_commands) | |
2962 | { | |
2963 | c = add_com ("go", class_run, go_command, _("\ | |
2964 | Usage: go <location>\n\ | |
2965 | Continue program being debugged, stopping at specified line or \n\ | |
2966 | address.\n\ | |
2967 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ | |
2968 | expression for an address to start at.\n\ | |
2969 | This command is a combination of tbreak and jump.")); | |
2970 | set_cmd_completer (c, location_completer); | |
2971 | } | |
2972 | ||
2973 | if (xdb_commands) | |
2974 | add_com_alias ("g", "go", class_run, 1); | |
2975 | ||
2976 | add_com ("continue", class_run, continue_command, _("\ | |
2977 | Continue program being debugged, after signal or breakpoint.\n\ | |
2978 | If proceeding from breakpoint, a number N may be used as an argument,\n\ | |
2979 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
2980 | the breakpoint won't break until the Nth time it is reached).\n\ | |
2981 | \n\ | |
2982 | If non-stop mode is enabled, continue only the current thread,\n\ | |
2983 | otherwise all the threads in the program are continued. To \n\ | |
2984 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
2985 | Specifying -a and an ignore count simultaneously is an error.")); | |
2986 | add_com_alias ("c", "cont", class_run, 1); | |
2987 | add_com_alias ("fg", "cont", class_run, 1); | |
2988 | ||
2989 | c = add_com ("run", class_run, run_command, _("\ | |
2990 | Start debugged program. You may specify arguments to give it.\n\ | |
2991 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
2992 | Input and output redirection with \">\", \"<\", or \">>\" are also \ | |
2993 | allowed.\n\n\ | |
2994 | With no arguments, uses arguments last specified (with \"run\" \ | |
2995 | or \"set args\").\n\ | |
2996 | To cancel previous arguments and run with no arguments,\n\ | |
2997 | use \"set args\" without arguments.")); | |
2998 | set_cmd_completer (c, filename_completer); | |
2999 | add_com_alias ("r", "run", class_run, 1); | |
3000 | if (xdb_commands) | |
3001 | add_com ("R", class_run, run_no_args_command, | |
3002 | _("Start debugged program with no arguments.")); | |
3003 | ||
3004 | c = add_com ("start", class_run, start_command, _("\ | |
3005 | Run the debugged program until the beginning of the main procedure.\n\ | |
3006 | You may specify arguments to give to your program, just as with the\n\ | |
3007 | \"run\" command.")); | |
3008 | set_cmd_completer (c, filename_completer); | |
3009 | ||
3010 | add_com ("interrupt", class_run, interrupt_target_command, | |
3011 | _("Interrupt the execution of the debugged program.\n\ | |
3012 | If non-stop mode is enabled, interrupt only the current thread,\n\ | |
3013 | otherwise all the threads in the program are stopped. To \n\ | |
3014 | interrupt all running threads in non-stop mode, use the -a option.")); | |
3015 | ||
3016 | add_info ("registers", nofp_registers_info, _("\ | |
3017 | List of integer registers and their contents, for selected stack frame.\n\ | |
3018 | Register name as argument means describe only that register.")); | |
3019 | add_info_alias ("r", "registers", 1); | |
3020 | ||
3021 | if (xdb_commands) | |
3022 | add_com ("lr", class_info, nofp_registers_info, _("\ | |
3023 | List of integer registers and their contents, for selected stack frame.\n\ | |
3024 | Register name as argument means describe only that register.")); | |
3025 | add_info ("all-registers", all_registers_info, _("\ | |
3026 | List of all registers and their contents, for selected stack frame.\n\ | |
3027 | Register name as argument means describe only that register.")); | |
3028 | ||
3029 | add_info ("program", program_info, | |
3030 | _("Execution status of the program.")); | |
3031 | ||
3032 | add_info ("float", float_info, | |
3033 | _("Print the status of the floating point unit\n")); | |
3034 | ||
3035 | add_info ("vector", vector_info, | |
3036 | _("Print the status of the vector unit\n")); | |
3037 | } |