Commit | Line | Data |
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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
5af949e3 | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <signal.h> |
c906108c SS |
23 | #include "symtab.h" |
24 | #include "gdbtypes.h" | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
45741a9c | 27 | #include "infrun.h" |
c906108c SS |
28 | #include "environ.h" |
29 | #include "value.h" | |
30 | #include "gdbcmd.h" | |
1adeb98a | 31 | #include "symfile.h" |
c906108c SS |
32 | #include "gdbcore.h" |
33 | #include "target.h" | |
34 | #include "language.h" | |
c906108c | 35 | #include "objfiles.h" |
c94fdfd0 | 36 | #include "completer.h" |
8b93c638 | 37 | #include "ui-out.h" |
6426a772 | 38 | #include "event-top.h" |
96baa820 | 39 | #include "parser-defs.h" |
36160dc4 | 40 | #include "regcache.h" |
f9418c0f | 41 | #include "reggroups.h" |
fe898f56 | 42 | #include "block.h" |
a77053c2 | 43 | #include "solib.h" |
f9418c0f | 44 | #include <ctype.h> |
281b533b | 45 | #include "observer.h" |
424163ea | 46 | #include "target-descriptions.h" |
ad842144 | 47 | #include "user-regs.h" |
700b53b1 | 48 | #include "cli/cli-decode.h" |
a0ef4274 | 49 | #include "gdbthread.h" |
79a45b7d | 50 | #include "valprint.h" |
edb3359d | 51 | #include "inline-frame.h" |
573cda03 | 52 | #include "tracepoint.h" |
09cee04b | 53 | #include "inf-loop.h" |
be34f849 | 54 | #include "continuations.h" |
f8eba3c6 | 55 | #include "linespec.h" |
529480d0 | 56 | #include "cli/cli-utils.h" |
8a6c4031 | 57 | #include "infcall.h" |
243a9253 | 58 | #include "thread-fsm.h" |
3b12939d | 59 | #include "top.h" |
d5551862 | 60 | |
a58dd373 EZ |
61 | /* Local functions: */ |
62 | ||
63 | static void nofp_registers_info (char *, int); | |
64 | ||
a14ed312 | 65 | static void until_next_command (int); |
c906108c | 66 | |
a14ed312 | 67 | static void until_command (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void path_info (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void path_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void unset_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void float_info (char *, int); |
c906108c | 76 | |
6ad8ae5c DJ |
77 | static void disconnect_command (char *, int); |
78 | ||
a14ed312 | 79 | static void unset_environment_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void set_environment_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void environment_info (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void program_info (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void finish_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void signal_command (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static void jump_command (char *, int); |
c906108c | 92 | |
a14ed312 | 93 | static void step_1 (int, int, char *); |
c906108c | 94 | |
a14ed312 | 95 | static void next_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | static void step_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void run_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | void _initialize_infcmd (void); |
c906108c | 102 | |
c906108c | 103 | #define ERROR_NO_INFERIOR \ |
8a3fe4f8 | 104 | if (!target_has_execution) error (_("The program is not being run.")); |
c906108c | 105 | |
3e43a32a MS |
106 | /* Scratch area where string containing arguments to give to the |
107 | program will be stored by 'set args'. As soon as anything is | |
108 | stored, notice_args_set will move it into per-inferior storage. | |
1777feb0 | 109 | Arguments are separated by spaces. Empty string (pointer to '\0') |
3e43a32a | 110 | means no args. */ |
c906108c | 111 | |
3f81c18a | 112 | static char *inferior_args_scratch; |
c906108c | 113 | |
3f81c18a VP |
114 | /* Scratch area where 'set inferior-tty' will store user-provided value. |
115 | We'll immediate copy it into per-inferior storage. */ | |
552c04a7 | 116 | |
3f81c18a | 117 | static char *inferior_io_terminal_scratch; |
c906108c SS |
118 | |
119 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
120 | Since various parts of infrun.c test this to see whether there is a program | |
121 | being debugged it should be nonzero (currently 3 is used) for remote | |
122 | debugging. */ | |
123 | ||
39f77062 | 124 | ptid_t inferior_ptid; |
c906108c | 125 | |
c906108c SS |
126 | /* Address at which inferior stopped. */ |
127 | ||
128 | CORE_ADDR stop_pc; | |
129 | ||
c906108c SS |
130 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
131 | ||
aa7d318d | 132 | enum stop_stack_kind stop_stack_dummy; |
c906108c SS |
133 | |
134 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
135 | process. */ | |
136 | ||
137 | int stopped_by_random_signal; | |
138 | ||
98882a26 PA |
139 | /* See inferior.h. */ |
140 | ||
141 | int startup_with_shell = 1; | |
142 | ||
c906108c | 143 | \f |
1777feb0 | 144 | /* Accessor routines. */ |
07091751 | 145 | |
3f81c18a VP |
146 | /* Set the io terminal for the current inferior. Ownership of |
147 | TERMINAL_NAME is not transferred. */ | |
148 | ||
3cb3b8df BR |
149 | void |
150 | set_inferior_io_terminal (const char *terminal_name) | |
151 | { | |
3f81c18a VP |
152 | xfree (current_inferior ()->terminal); |
153 | current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0; | |
3cb3b8df BR |
154 | } |
155 | ||
156 | const char * | |
157 | get_inferior_io_terminal (void) | |
158 | { | |
3f81c18a VP |
159 | return current_inferior ()->terminal; |
160 | } | |
161 | ||
162 | static void | |
163 | set_inferior_tty_command (char *args, int from_tty, | |
164 | struct cmd_list_element *c) | |
165 | { | |
166 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
167 | Now route it to current inferior. */ | |
168 | set_inferior_io_terminal (inferior_io_terminal_scratch); | |
169 | } | |
170 | ||
171 | static void | |
172 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
173 | struct cmd_list_element *c, const char *value) | |
174 | { | |
175 | /* Note that we ignore the passed-in value in favor of computing it | |
176 | directly. */ | |
275f2e57 | 177 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
abbb1732 | 178 | |
275f2e57 DJ |
179 | if (inferior_io_terminal == NULL) |
180 | inferior_io_terminal = ""; | |
3f81c18a | 181 | fprintf_filtered (gdb_stdout, |
275f2e57 DJ |
182 | _("Terminal for future runs of program being debugged " |
183 | "is \"%s\".\n"), inferior_io_terminal); | |
3cb3b8df BR |
184 | } |
185 | ||
07091751 FN |
186 | char * |
187 | get_inferior_args (void) | |
188 | { | |
3f81c18a | 189 | if (current_inferior ()->argc != 0) |
552c04a7 | 190 | { |
3f81c18a | 191 | char *n; |
552c04a7 | 192 | |
3f81c18a VP |
193 | n = construct_inferior_arguments (current_inferior ()->argc, |
194 | current_inferior ()->argv); | |
195 | set_inferior_args (n); | |
196 | xfree (n); | |
552c04a7 TT |
197 | } |
198 | ||
3f81c18a VP |
199 | if (current_inferior ()->args == NULL) |
200 | current_inferior ()->args = xstrdup (""); | |
552c04a7 | 201 | |
3f81c18a | 202 | return current_inferior ()->args; |
07091751 FN |
203 | } |
204 | ||
3f81c18a VP |
205 | /* Set the arguments for the current inferior. Ownership of |
206 | NEWARGS is not transferred. */ | |
207 | ||
208 | void | |
07091751 FN |
209 | set_inferior_args (char *newargs) |
210 | { | |
3f81c18a VP |
211 | xfree (current_inferior ()->args); |
212 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; | |
213 | current_inferior ()->argc = 0; | |
214 | current_inferior ()->argv = 0; | |
07091751 | 215 | } |
c5aa993b | 216 | |
552c04a7 TT |
217 | void |
218 | set_inferior_args_vector (int argc, char **argv) | |
219 | { | |
3f81c18a VP |
220 | current_inferior ()->argc = argc; |
221 | current_inferior ()->argv = argv; | |
552c04a7 TT |
222 | } |
223 | ||
224 | /* Notice when `set args' is run. */ | |
6339bfc4 | 225 | |
552c04a7 | 226 | static void |
3f81c18a | 227 | set_args_command (char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 228 | { |
3f81c18a VP |
229 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
230 | Now route it to current inferior. */ | |
231 | set_inferior_args (inferior_args_scratch); | |
552c04a7 TT |
232 | } |
233 | ||
234 | /* Notice when `show args' is run. */ | |
6339bfc4 | 235 | |
552c04a7 | 236 | static void |
3f81c18a VP |
237 | show_args_command (struct ui_file *file, int from_tty, |
238 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 239 | { |
258c00cc TT |
240 | /* Note that we ignore the passed-in value in favor of computing it |
241 | directly. */ | |
242 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
552c04a7 TT |
243 | } |
244 | ||
c2a727fa TT |
245 | \f |
246 | /* Compute command-line string given argument vector. This does the | |
247 | same shell processing as fork_inferior. */ | |
6339bfc4 | 248 | |
c2a727fa | 249 | char * |
bd57a748 | 250 | construct_inferior_arguments (int argc, char **argv) |
c2a727fa TT |
251 | { |
252 | char *result; | |
253 | ||
98882a26 | 254 | if (startup_with_shell) |
c2a727fa | 255 | { |
5d60742e EZ |
256 | #ifdef __MINGW32__ |
257 | /* This holds all the characters considered special to the | |
258 | Windows shells. */ | |
259 | char *special = "\"!&*|[]{}<>?`~^=;, \t\n"; | |
260 | const char quote = '"'; | |
261 | #else | |
c2a727fa TT |
262 | /* This holds all the characters considered special to the |
263 | typical Unix shells. We include `^' because the SunOS | |
264 | /bin/sh treats it as a synonym for `|'. */ | |
5d60742e EZ |
265 | char *special = "\"!#$&*()\\|[]{}<>?'`~^; \t\n"; |
266 | const char quote = '\''; | |
267 | #endif | |
c2a727fa TT |
268 | int i; |
269 | int length = 0; | |
270 | char *out, *cp; | |
271 | ||
272 | /* We over-compute the size. It shouldn't matter. */ | |
273 | for (i = 0; i < argc; ++i) | |
c2226152 | 274 | length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0'); |
c2a727fa TT |
275 | |
276 | result = (char *) xmalloc (length); | |
277 | out = result; | |
278 | ||
279 | for (i = 0; i < argc; ++i) | |
280 | { | |
281 | if (i > 0) | |
282 | *out++ = ' '; | |
283 | ||
03c6228e AS |
284 | /* Need to handle empty arguments specially. */ |
285 | if (argv[i][0] == '\0') | |
c2a727fa | 286 | { |
5d60742e EZ |
287 | *out++ = quote; |
288 | *out++ = quote; | |
03c6228e AS |
289 | } |
290 | else | |
291 | { | |
5d60742e EZ |
292 | #ifdef __MINGW32__ |
293 | int quoted = 0; | |
294 | ||
295 | if (strpbrk (argv[i], special)) | |
296 | { | |
297 | quoted = 1; | |
298 | *out++ = quote; | |
299 | } | |
300 | #endif | |
03c6228e AS |
301 | for (cp = argv[i]; *cp; ++cp) |
302 | { | |
c2226152 AS |
303 | if (*cp == '\n') |
304 | { | |
305 | /* A newline cannot be quoted with a backslash (it | |
306 | just disappears), only by putting it inside | |
307 | quotes. */ | |
5d60742e | 308 | *out++ = quote; |
c2226152 | 309 | *out++ = '\n'; |
5d60742e | 310 | *out++ = quote; |
c2226152 AS |
311 | } |
312 | else | |
313 | { | |
5d60742e EZ |
314 | #ifdef __MINGW32__ |
315 | if (*cp == quote) | |
316 | #else | |
c2226152 | 317 | if (strchr (special, *cp) != NULL) |
5d60742e | 318 | #endif |
c2226152 AS |
319 | *out++ = '\\'; |
320 | *out++ = *cp; | |
321 | } | |
03c6228e | 322 | } |
5d60742e EZ |
323 | #ifdef __MINGW32__ |
324 | if (quoted) | |
325 | *out++ = quote; | |
326 | #endif | |
c2a727fa TT |
327 | } |
328 | } | |
329 | *out = '\0'; | |
330 | } | |
331 | else | |
332 | { | |
333 | /* In this case we can't handle arguments that contain spaces, | |
334 | tabs, or newlines -- see breakup_args(). */ | |
335 | int i; | |
336 | int length = 0; | |
337 | ||
338 | for (i = 0; i < argc; ++i) | |
339 | { | |
340 | char *cp = strchr (argv[i], ' '); | |
341 | if (cp == NULL) | |
342 | cp = strchr (argv[i], '\t'); | |
343 | if (cp == NULL) | |
344 | cp = strchr (argv[i], '\n'); | |
345 | if (cp != NULL) | |
3e43a32a MS |
346 | error (_("can't handle command-line " |
347 | "argument containing whitespace")); | |
c2a727fa TT |
348 | length += strlen (argv[i]) + 1; |
349 | } | |
350 | ||
351 | result = (char *) xmalloc (length); | |
352 | result[0] = '\0'; | |
353 | for (i = 0; i < argc; ++i) | |
354 | { | |
355 | if (i > 0) | |
356 | strcat (result, " "); | |
357 | strcat (result, argv[i]); | |
358 | } | |
359 | } | |
360 | ||
361 | return result; | |
362 | } | |
552c04a7 TT |
363 | \f |
364 | ||
6c4486e6 PA |
365 | /* This function strips the '&' character (indicating background |
366 | execution) that is added as *the last* of the arguments ARGS of a | |
367 | command. A copy of the incoming ARGS without the '&' is returned, | |
368 | unless the resulting string after stripping is empty, in which case | |
369 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
370 | whether the '&' character was found. */ | |
6339bfc4 | 371 | |
6c4486e6 PA |
372 | static char * |
373 | strip_bg_char (const char *args, int *bg_char_p) | |
43ff13b4 | 374 | { |
6c4486e6 | 375 | const char *p; |
c5aa993b | 376 | |
6c4486e6 PA |
377 | if (args == NULL || *args == '\0') |
378 | { | |
379 | *bg_char_p = 0; | |
380 | return NULL; | |
381 | } | |
c5aa993b | 382 | |
6c4486e6 PA |
383 | p = args + strlen (args); |
384 | if (p[-1] == '&') | |
43ff13b4 | 385 | { |
6c4486e6 PA |
386 | p--; |
387 | while (p > args && isspace (p[-1])) | |
388 | p--; | |
389 | ||
390 | *bg_char_p = 1; | |
391 | if (p != args) | |
392 | return savestring (args, p - args); | |
393 | else | |
394 | return NULL; | |
43ff13b4 | 395 | } |
6c4486e6 PA |
396 | |
397 | *bg_char_p = 0; | |
398 | return xstrdup (args); | |
43ff13b4 JM |
399 | } |
400 | ||
281b533b DJ |
401 | /* Common actions to take after creating any sort of inferior, by any |
402 | means (running, attaching, connecting, et cetera). The target | |
403 | should be stopped. */ | |
404 | ||
405 | void | |
406 | post_create_inferior (struct target_ops *target, int from_tty) | |
407 | { | |
ce406537 | 408 | |
b79599ff | 409 | /* Be sure we own the terminal in case write operations are performed. */ |
f8e3ef9d | 410 | target_terminal_ours_for_output (); |
b79599ff | 411 | |
424163ea DJ |
412 | /* If the target hasn't taken care of this already, do it now. |
413 | Targets which need to access registers during to_open, | |
414 | to_create_inferior, or to_attach should do it earlier; but many | |
415 | don't need to. */ | |
416 | target_find_description (); | |
417 | ||
ce406537 PA |
418 | /* Now that we know the register layout, retrieve current PC. But |
419 | if the PC is unavailable (e.g., we're opening a core file with | |
420 | missing registers info), ignore it. */ | |
421 | stop_pc = 0; | |
492d29ea | 422 | TRY |
ce406537 PA |
423 | { |
424 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
425 | } | |
492d29ea | 426 | CATCH (ex, RETURN_MASK_ERROR) |
7556d4a4 PA |
427 | { |
428 | if (ex.error != NOT_AVAILABLE_ERROR) | |
429 | throw_exception (ex); | |
430 | } | |
492d29ea | 431 | END_CATCH |
f698437e | 432 | |
50c71eaf PA |
433 | if (exec_bfd) |
434 | { | |
2eff07b3 PP |
435 | const unsigned solib_add_generation |
436 | = current_program_space->solib_add_generation; | |
437 | ||
9353355f DJ |
438 | /* Create the hooks to handle shared library load and unload |
439 | events. */ | |
268a4a75 | 440 | solib_create_inferior_hook (from_tty); |
268a4a75 | 441 | |
2eff07b3 PP |
442 | if (current_program_space->solib_add_generation == solib_add_generation) |
443 | { | |
444 | /* The platform-specific hook should load initial shared libraries, | |
445 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
446 | targets should be fixed anyway. Call it only after the solib | |
447 | target has been initialized by solib_create_inferior_hook. */ | |
448 | ||
449 | if (info_verbose) | |
450 | warning (_("platform-specific solib_create_inferior_hook did " | |
451 | "not load initial shared libraries.")); | |
452 | ||
453 | /* If the solist is global across processes, there's no need to | |
454 | refetch it here. */ | |
f5656ead | 455 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
4d1eb6b4 | 456 | solib_add (NULL, 0, target, auto_solib_add); |
2eff07b3 | 457 | } |
9353355f DJ |
458 | } |
459 | ||
ea5d7a99 PM |
460 | /* If the user sets watchpoints before execution having started, |
461 | then she gets software watchpoints, because GDB can't know which | |
462 | target will end up being pushed, or if it supports hardware | |
463 | watchpoints or not. breakpoint_re_set takes care of promoting | |
464 | watchpoints to hardware watchpoints if possible, however, if this | |
465 | new inferior doesn't load shared libraries or we don't pull in | |
466 | symbols from any other source on this target/arch, | |
467 | breakpoint_re_set is never called. Call it now so that software | |
468 | watchpoints get a chance to be promoted to hardware watchpoints | |
469 | if the now pushed target supports hardware watchpoints. */ | |
470 | breakpoint_re_set (); | |
471 | ||
281b533b DJ |
472 | observer_notify_inferior_created (target, from_tty); |
473 | } | |
474 | ||
a4d5f2e0 JB |
475 | /* Kill the inferior if already running. This function is designed |
476 | to be called when we are about to start the execution of the program | |
477 | from the beginning. Ask the user to confirm that he wants to restart | |
478 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 479 | |
8edfe269 | 480 | static void |
a4d5f2e0 JB |
481 | kill_if_already_running (int from_tty) |
482 | { | |
39f77062 | 483 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
c906108c | 484 | { |
8edfe269 DJ |
485 | /* Bail out before killing the program if we will not be able to |
486 | restart it. */ | |
487 | target_require_runnable (); | |
488 | ||
adf40b2e | 489 | if (from_tty |
9e2f0ad4 HZ |
490 | && !query (_("The program being debugged has been started already.\n\ |
491 | Start it from the beginning? "))) | |
8a3fe4f8 | 492 | error (_("Program not restarted.")); |
c906108c | 493 | target_kill (); |
c906108c | 494 | } |
a4d5f2e0 JB |
495 | } |
496 | ||
329ea579 | 497 | /* See inferior.h. */ |
8bc2fe48 | 498 | |
329ea579 | 499 | void |
8bc2fe48 PA |
500 | prepare_execution_command (struct target_ops *target, int background) |
501 | { | |
502 | /* If we get a request for running in the bg but the target | |
503 | doesn't support it, error out. */ | |
504 | if (background && !target->to_can_async_p (target)) | |
505 | error (_("Asynchronous execution not supported on this target.")); | |
506 | ||
0b333c5e | 507 | if (!background) |
8bc2fe48 | 508 | { |
0b333c5e PA |
509 | /* If we get a request for running in the fg, then we need to |
510 | simulate synchronous (fg) execution. Note no cleanup is | |
511 | necessary for this. stdin is re-enabled whenever an error | |
512 | reaches the top level. */ | |
a8836c93 | 513 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
514 | } |
515 | } | |
516 | ||
1777feb0 | 517 | /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert |
f67a969f JB |
518 | a temporary breakpoint at the begining of the main program before |
519 | running the program. */ | |
520 | ||
a4d5f2e0 | 521 | static void |
f67a969f | 522 | run_command_1 (char *args, int from_tty, int tbreak_at_main) |
a4d5f2e0 JB |
523 | { |
524 | char *exec_file; | |
29f49a6a PA |
525 | struct cleanup *old_chain; |
526 | ptid_t ptid; | |
79a45e25 | 527 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 528 | struct target_ops *run_target; |
6c4486e6 PA |
529 | int async_exec; |
530 | struct cleanup *args_chain; | |
c906108c | 531 | |
a4d5f2e0 JB |
532 | dont_repeat (); |
533 | ||
534 | kill_if_already_running (from_tty); | |
3c35e65b UW |
535 | |
536 | init_wait_for_inferior (); | |
c906108c SS |
537 | clear_breakpoint_hit_counts (); |
538 | ||
fd79ecee DJ |
539 | /* Clean up any leftovers from other runs. Some other things from |
540 | this function should probably be moved into target_pre_inferior. */ | |
541 | target_pre_inferior (from_tty); | |
542 | ||
39ad761d JB |
543 | /* The comment here used to read, "The exec file is re-read every |
544 | time we do a generic_mourn_inferior, so we just have to worry | |
545 | about the symbol file." The `generic_mourn_inferior' function | |
546 | gets called whenever the program exits. However, suppose the | |
547 | program exits, and *then* the executable file changes? We need | |
548 | to check again here. Since reopen_exec_file doesn't do anything | |
549 | if the timestamp hasn't changed, I don't see the harm. */ | |
550 | reopen_exec_file (); | |
c906108c SS |
551 | reread_symbols (); |
552 | ||
6c4486e6 PA |
553 | args = strip_bg_char (args, &async_exec); |
554 | args_chain = make_cleanup (xfree, args); | |
f67a969f | 555 | |
8bc2fe48 PA |
556 | /* Do validation and preparation before possibly changing anything |
557 | in the inferior. */ | |
39ad761d | 558 | |
b3ccfe11 TT |
559 | run_target = find_run_target (); |
560 | ||
8bc2fe48 PA |
561 | prepare_execution_command (run_target, async_exec); |
562 | ||
b3ccfe11 | 563 | if (non_stop && !run_target->to_supports_non_stop (run_target)) |
9908b566 VP |
564 | error (_("The target does not support running in non-stop mode.")); |
565 | ||
8bc2fe48 PA |
566 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
567 | ||
568 | /* Insert the temporary breakpoint if a location was specified. */ | |
569 | if (tbreak_at_main) | |
570 | tbreak_command (main_name (), 0); | |
571 | ||
572 | exec_file = (char *) get_exec_file (0); | |
573 | ||
c906108c SS |
574 | /* We keep symbols from add-symbol-file, on the grounds that the |
575 | user might want to add some symbols before running the program | |
576 | (right?). But sometimes (dynamic loading where the user manually | |
577 | introduces the new symbols with add-symbol-file), the code which | |
578 | the symbols describe does not persist between runs. Currently | |
579 | the user has to manually nuke all symbols between runs if they | |
580 | want them to go away (PR 2207). This is probably reasonable. */ | |
581 | ||
8bc2fe48 PA |
582 | /* If there were other args, beside '&', process them. */ |
583 | if (args != NULL) | |
584 | set_inferior_args (args); | |
c906108c SS |
585 | |
586 | if (from_tty) | |
587 | { | |
8b93c638 JM |
588 | ui_out_field_string (uiout, NULL, "Starting program"); |
589 | ui_out_text (uiout, ": "); | |
590 | if (exec_file) | |
591 | ui_out_field_string (uiout, "execfile", exec_file); | |
592 | ui_out_spaces (uiout, 1); | |
552c04a7 TT |
593 | /* We call get_inferior_args() because we might need to compute |
594 | the value now. */ | |
595 | ui_out_field_string (uiout, "infargs", get_inferior_args ()); | |
8b93c638 JM |
596 | ui_out_text (uiout, "\n"); |
597 | ui_out_flush (uiout); | |
c906108c SS |
598 | } |
599 | ||
6c4486e6 PA |
600 | /* Done with ARGS. */ |
601 | do_cleanups (args_chain); | |
602 | ||
552c04a7 TT |
603 | /* We call get_inferior_args() because we might need to compute |
604 | the value now. */ | |
b3ccfe11 TT |
605 | run_target->to_create_inferior (run_target, exec_file, get_inferior_args (), |
606 | environ_vector (current_inferior ()->environment), | |
607 | from_tty); | |
608 | /* to_create_inferior should push the target, so after this point we | |
609 | shouldn't refer to run_target again. */ | |
610 | run_target = NULL; | |
281b533b | 611 | |
29f49a6a PA |
612 | /* We're starting off a new process. When we get out of here, in |
613 | non-stop mode, finish the state of all threads of that process, | |
614 | but leave other threads alone, as they may be stopped in internal | |
615 | events --- the frontend shouldn't see them as stopped. In | |
616 | all-stop, always finish the state of all threads, as we may be | |
617 | resuming more than just the new process. */ | |
618 | if (non_stop) | |
619 | ptid = pid_to_ptid (ptid_get_pid (inferior_ptid)); | |
620 | else | |
621 | ptid = minus_one_ptid; | |
622 | old_chain = make_cleanup (finish_thread_state_cleanup, &ptid); | |
623 | ||
de1b3c3d PA |
624 | /* Pass zero for FROM_TTY, because at this point the "run" command |
625 | has done its thing; now we are setting up the running program. */ | |
626 | post_create_inferior (¤t_target, 0); | |
281b533b | 627 | |
74d1f91e JK |
628 | /* Start the target running. Do not use -1 continuation as it would skip |
629 | breakpoint right at the entry point. */ | |
64ce06e4 | 630 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 631 | |
29f49a6a PA |
632 | /* Since there was no error, there's no need to finish the thread |
633 | states here. */ | |
634 | discard_cleanups (old_chain); | |
635 | } | |
c906108c | 636 | |
f67a969f JB |
637 | static void |
638 | run_command (char *args, int from_tty) | |
639 | { | |
640 | run_command_1 (args, from_tty, 0); | |
641 | } | |
642 | ||
a4d5f2e0 JB |
643 | /* Start the execution of the program up until the beginning of the main |
644 | program. */ | |
645 | ||
646 | static void | |
647 | start_command (char *args, int from_tty) | |
648 | { | |
649 | /* Some languages such as Ada need to search inside the program | |
650 | minimal symbols for the location where to put the temporary | |
651 | breakpoint before starting. */ | |
652 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 653 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 654 | |
f67a969f JB |
655 | /* Run the program until reaching the main procedure... */ |
656 | run_command_1 (args, from_tty, 1); | |
a4d5f2e0 JB |
657 | } |
658 | ||
8cae4b3f PA |
659 | static int |
660 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
661 | { | |
74531fed PA |
662 | /* We go through all threads individually instead of compressing |
663 | into a single target `resume_all' request, because some threads | |
664 | may be stopped in internal breakpoints/events, or stopped waiting | |
665 | for its turn in the displaced stepping queue (that is, they are | |
666 | running && !executing). The target side has no idea about why | |
667 | the thread is stopped, so a `resume_all' command would resume too | |
668 | much. If/when GDB gains a way to tell the target `hold this | |
669 | thread stopped until I say otherwise', then we can optimize | |
670 | this. */ | |
4f8d22e3 | 671 | if (!is_stopped (thread->ptid)) |
8cae4b3f PA |
672 | return 0; |
673 | ||
dcf4fbde | 674 | switch_to_thread (thread->ptid); |
70509625 | 675 | clear_proceed_status (0); |
64ce06e4 | 676 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
677 | return 0; |
678 | } | |
679 | ||
70221824 | 680 | static void |
d729566a PA |
681 | ensure_valid_thread (void) |
682 | { | |
683 | if (ptid_equal (inferior_ptid, null_ptid) | |
684 | || is_exited (inferior_ptid)) | |
3e43a32a | 685 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
686 | } |
687 | ||
573cda03 | 688 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 689 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
690 | disallow those commands. */ |
691 | ||
70221824 | 692 | static void |
573cda03 SS |
693 | ensure_not_tfind_mode (void) |
694 | { | |
695 | if (get_traceframe_number () >= 0) | |
3e43a32a | 696 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
697 | } |
698 | ||
3d3fef6b YQ |
699 | /* Throw an error indicating the current thread is running. */ |
700 | ||
701 | static void | |
702 | error_is_running (void) | |
703 | { | |
704 | error (_("Cannot execute this command while " | |
705 | "the selected thread is running.")); | |
706 | } | |
707 | ||
708 | /* Calls error_is_running if the current thread is running. */ | |
709 | ||
710 | static void | |
711 | ensure_not_running (void) | |
712 | { | |
713 | if (is_running (inferior_ptid)) | |
714 | error_is_running (); | |
715 | } | |
716 | ||
77ebaa5a VP |
717 | void |
718 | continue_1 (int all_threads) | |
719 | { | |
3d488bfc | 720 | ERROR_NO_INFERIOR; |
573cda03 | 721 | ensure_not_tfind_mode (); |
3d488bfc | 722 | |
77ebaa5a VP |
723 | if (non_stop && all_threads) |
724 | { | |
725 | /* Don't error out if the current thread is running, because | |
abbb1732 | 726 | there may be other stopped threads. */ |
77ebaa5a VP |
727 | struct cleanup *old_chain; |
728 | ||
729 | /* Backup current thread and selected frame. */ | |
730 | old_chain = make_cleanup_restore_current_thread (); | |
731 | ||
732 | iterate_over_threads (proceed_thread_callback, NULL); | |
733 | ||
3b12939d | 734 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
735 | { |
736 | /* If all threads in the target were already running, | |
737 | proceed_thread_callback ends up never calling proceed, | |
738 | and so nothing calls this to put the inferior's terminal | |
739 | settings in effect and remove stdin from the event loop, | |
740 | which we must when running a foreground command. E.g.: | |
741 | ||
742 | (gdb) c -a& | |
743 | Continuing. | |
744 | <all threads are running now> | |
745 | (gdb) c -a | |
746 | Continuing. | |
747 | <no thread was resumed, but the inferior now owns the terminal> | |
748 | */ | |
749 | target_terminal_inferior (); | |
750 | } | |
751 | ||
77ebaa5a VP |
752 | /* Restore selected ptid. */ |
753 | do_cleanups (old_chain); | |
754 | } | |
755 | else | |
756 | { | |
d729566a | 757 | ensure_valid_thread (); |
77ebaa5a | 758 | ensure_not_running (); |
70509625 | 759 | clear_proceed_status (0); |
64ce06e4 | 760 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
761 | } |
762 | } | |
763 | ||
8cae4b3f | 764 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 765 | |
1dd5fedc | 766 | static void |
8cae4b3f | 767 | continue_command (char *args, int from_tty) |
c906108c | 768 | { |
6c4486e6 | 769 | int async_exec; |
8cae4b3f | 770 | int all_threads = 0; |
6c4486e6 PA |
771 | struct cleanup *args_chain; |
772 | ||
c906108c SS |
773 | ERROR_NO_INFERIOR; |
774 | ||
1777feb0 | 775 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
776 | args = strip_bg_char (args, &async_exec); |
777 | args_chain = make_cleanup (xfree, args); | |
43ff13b4 | 778 | |
8cae4b3f PA |
779 | if (args != NULL) |
780 | { | |
61012eef | 781 | if (startswith (args, "-a")) |
8cae4b3f PA |
782 | { |
783 | all_threads = 1; | |
784 | args += sizeof ("-a") - 1; | |
785 | if (*args == '\0') | |
786 | args = NULL; | |
787 | } | |
788 | } | |
789 | ||
790 | if (!non_stop && all_threads) | |
791 | error (_("`-a' is meaningless in all-stop mode.")); | |
792 | ||
793 | if (args != NULL && all_threads) | |
3e43a32a MS |
794 | error (_("Can't resume all threads and specify " |
795 | "proceed count simultaneously.")); | |
8cae4b3f PA |
796 | |
797 | /* If we have an argument left, set proceed count of breakpoint we | |
798 | stopped at. */ | |
799 | if (args != NULL) | |
c906108c | 800 | { |
347bddb7 | 801 | bpstat bs = NULL; |
8671a17b PA |
802 | int num, stat; |
803 | int stopped = 0; | |
347bddb7 PA |
804 | struct thread_info *tp; |
805 | ||
806 | if (non_stop) | |
e09875d4 | 807 | tp = find_thread_ptid (inferior_ptid); |
347bddb7 PA |
808 | else |
809 | { | |
810 | ptid_t last_ptid; | |
811 | struct target_waitstatus ws; | |
812 | ||
813 | get_last_target_status (&last_ptid, &ws); | |
e09875d4 | 814 | tp = find_thread_ptid (last_ptid); |
347bddb7 PA |
815 | } |
816 | if (tp != NULL) | |
16c381f0 | 817 | bs = tp->control.stop_bpstat; |
8671a17b PA |
818 | |
819 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
820 | if (stat > 0) | |
821 | { | |
822 | set_ignore_count (num, | |
8cae4b3f | 823 | parse_and_eval_long (args) - 1, |
8671a17b PA |
824 | from_tty); |
825 | /* set_ignore_count prints a message ending with a period. | |
826 | So print two spaces before "Continuing.". */ | |
827 | if (from_tty) | |
828 | printf_filtered (" "); | |
829 | stopped = 1; | |
830 | } | |
831 | ||
832 | if (!stopped && from_tty) | |
c906108c SS |
833 | { |
834 | printf_filtered | |
835 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
836 | } | |
c906108c SS |
837 | } |
838 | ||
6c4486e6 PA |
839 | /* Done with ARGS. */ |
840 | do_cleanups (args_chain); | |
841 | ||
3b12939d PA |
842 | ERROR_NO_INFERIOR; |
843 | ensure_not_tfind_mode (); | |
844 | ||
845 | if (!non_stop || !all_threads) | |
846 | { | |
847 | ensure_valid_thread (); | |
848 | ensure_not_running (); | |
849 | } | |
850 | ||
851 | prepare_execution_command (¤t_target, async_exec); | |
852 | ||
c906108c | 853 | if (from_tty) |
a3f17187 | 854 | printf_filtered (_("Continuing.\n")); |
c906108c | 855 | |
77ebaa5a | 856 | continue_1 (all_threads); |
c906108c SS |
857 | } |
858 | \f | |
edb3359d DJ |
859 | /* Record the starting point of a "step" or "next" command. */ |
860 | ||
861 | static void | |
862 | set_step_frame (void) | |
863 | { | |
864 | struct symtab_and_line sal; | |
64ce06e4 PA |
865 | CORE_ADDR pc; |
866 | struct frame_info *frame = get_current_frame (); | |
867 | struct thread_info *tp = inferior_thread (); | |
edb3359d | 868 | |
64ce06e4 PA |
869 | find_frame_sal (frame, &sal); |
870 | set_step_info (frame, sal); | |
871 | pc = get_frame_pc (frame); | |
872 | tp->control.step_start_function = find_pc_function (pc); | |
edb3359d DJ |
873 | } |
874 | ||
c906108c SS |
875 | /* Step until outside of current statement. */ |
876 | ||
c906108c | 877 | static void |
fba45db2 | 878 | step_command (char *count_string, int from_tty) |
c906108c SS |
879 | { |
880 | step_1 (0, 0, count_string); | |
881 | } | |
882 | ||
883 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
884 | ||
c906108c | 885 | static void |
fba45db2 | 886 | next_command (char *count_string, int from_tty) |
c906108c SS |
887 | { |
888 | step_1 (1, 0, count_string); | |
889 | } | |
890 | ||
891 | /* Likewise, but step only one instruction. */ | |
892 | ||
1dd5fedc | 893 | static void |
fba45db2 | 894 | stepi_command (char *count_string, int from_tty) |
c906108c SS |
895 | { |
896 | step_1 (0, 1, count_string); | |
897 | } | |
898 | ||
1dd5fedc | 899 | static void |
fba45db2 | 900 | nexti_command (char *count_string, int from_tty) |
c906108c SS |
901 | { |
902 | step_1 (1, 1, count_string); | |
903 | } | |
904 | ||
186c406b | 905 | void |
611c83ae | 906 | delete_longjmp_breakpoint_cleanup (void *arg) |
74b7792f | 907 | { |
611c83ae PA |
908 | int thread = * (int *) arg; |
909 | delete_longjmp_breakpoint (thread); | |
74b7792f AC |
910 | } |
911 | ||
243a9253 PA |
912 | /* Data for the FSM that manages the step/next/stepi/nexti |
913 | commands. */ | |
914 | ||
915 | struct step_command_fsm | |
916 | { | |
917 | /* The base class. */ | |
918 | struct thread_fsm thread_fsm; | |
919 | ||
920 | /* How many steps left in a "step N"-like command. */ | |
921 | int count; | |
922 | ||
923 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
924 | int skip_subroutines; | |
925 | ||
926 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
927 | int single_inst; | |
928 | ||
929 | /* The thread that the command was run on. */ | |
930 | int thread; | |
931 | }; | |
932 | ||
933 | static void step_command_fsm_clean_up (struct thread_fsm *self); | |
934 | static int step_command_fsm_should_stop (struct thread_fsm *self); | |
935 | static enum async_reply_reason | |
936 | step_command_fsm_async_reply_reason (struct thread_fsm *self); | |
937 | ||
938 | /* step_command_fsm's vtable. */ | |
939 | ||
940 | static struct thread_fsm_ops step_command_fsm_ops = | |
941 | { | |
942 | NULL, | |
943 | step_command_fsm_clean_up, | |
944 | step_command_fsm_should_stop, | |
945 | NULL, /* return_value */ | |
946 | step_command_fsm_async_reply_reason, | |
947 | }; | |
948 | ||
949 | /* Allocate a new step_command_fsm. */ | |
950 | ||
951 | static struct step_command_fsm * | |
952 | new_step_command_fsm (void) | |
953 | { | |
954 | struct step_command_fsm *sm; | |
955 | ||
956 | sm = XCNEW (struct step_command_fsm); | |
957 | thread_fsm_ctor (&sm->thread_fsm, &step_command_fsm_ops); | |
958 | ||
959 | return sm; | |
960 | } | |
961 | ||
962 | /* Prepare for a step/next/etc. command. Any target resource | |
963 | allocated here is undone in the FSM's clean_up method. */ | |
964 | ||
965 | static void | |
966 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
967 | int skip_subroutines, int single_inst, | |
968 | int count, struct thread_info *thread) | |
969 | { | |
970 | sm->skip_subroutines = skip_subroutines; | |
971 | sm->single_inst = single_inst; | |
972 | sm->count = count; | |
5d5658a1 | 973 | sm->thread = thread->global_num; |
243a9253 PA |
974 | |
975 | /* Leave the si command alone. */ | |
976 | if (!sm->single_inst || sm->skip_subroutines) | |
977 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
978 | ||
979 | thread->control.stepping_command = 1; | |
980 | } | |
981 | ||
982 | static int prepare_one_step (struct step_command_fsm *sm); | |
983 | ||
c906108c | 984 | static void |
fba45db2 | 985 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
c906108c | 986 | { |
243a9253 | 987 | int count; |
6c4486e6 | 988 | int async_exec; |
6c4486e6 | 989 | struct cleanup *args_chain; |
243a9253 PA |
990 | struct thread_info *thr; |
991 | struct step_command_fsm *step_sm; | |
c5aa993b | 992 | |
c906108c | 993 | ERROR_NO_INFERIOR; |
573cda03 | 994 | ensure_not_tfind_mode (); |
d729566a | 995 | ensure_valid_thread (); |
94cc34af | 996 | ensure_not_running (); |
43ff13b4 | 997 | |
6c4486e6 PA |
998 | count_string = strip_bg_char (count_string, &async_exec); |
999 | args_chain = make_cleanup (xfree, count_string); | |
c5aa993b | 1000 | |
8bc2fe48 | 1001 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1002 | |
bb518678 | 1003 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 1004 | |
6c4486e6 PA |
1005 | /* Done with ARGS. */ |
1006 | do_cleanups (args_chain); | |
1007 | ||
243a9253 | 1008 | clear_proceed_status (1); |
611c83ae | 1009 | |
243a9253 PA |
1010 | /* Setup the execution command state machine to handle all the COUNT |
1011 | steps. */ | |
1012 | thr = inferior_thread (); | |
1013 | step_sm = new_step_command_fsm (); | |
1014 | thr->thread_fsm = &step_sm->thread_fsm; | |
611c83ae | 1015 | |
243a9253 PA |
1016 | step_command_fsm_prepare (step_sm, skip_subroutines, |
1017 | single_inst, count, thr); | |
c2d11a7d | 1018 | |
0b333c5e PA |
1019 | /* Do only one step for now, before returning control to the event |
1020 | loop. Let the continuation figure out how many other steps we | |
1021 | need to do, and handle them one at the time, through | |
1022 | step_once. */ | |
243a9253 PA |
1023 | if (!prepare_one_step (step_sm)) |
1024 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
1025 | else | |
1026 | { | |
3b12939d PA |
1027 | int proceeded; |
1028 | ||
243a9253 PA |
1029 | /* Stepped into an inline frame. Pretend that we've |
1030 | stopped. */ | |
1031 | thread_fsm_clean_up (thr->thread_fsm); | |
3b12939d PA |
1032 | proceeded = normal_stop (); |
1033 | if (!proceeded) | |
1034 | inferior_event_handler (INF_EXEC_COMPLETE, NULL); | |
1035 | all_uis_check_sync_execution_done (); | |
243a9253 | 1036 | } |
c2d11a7d | 1037 | } |
c906108c | 1038 | |
243a9253 PA |
1039 | /* Implementation of the 'should_stop' FSM method for stepping |
1040 | commands. Called after we are done with one step operation, to | |
1041 | check whether we need to step again, before we print the prompt and | |
1042 | return control to the user. If count is > 1, returns false, as we | |
1043 | will need to keep going. */ | |
6339bfc4 | 1044 | |
243a9253 PA |
1045 | static int |
1046 | step_command_fsm_should_stop (struct thread_fsm *self) | |
c2d11a7d | 1047 | { |
243a9253 | 1048 | struct step_command_fsm *sm = (struct step_command_fsm *) self; |
5d5658a1 | 1049 | struct thread_info *tp = find_thread_global_id (sm->thread); |
f13468d9 | 1050 | |
243a9253 | 1051 | if (tp->control.stop_step) |
f13468d9 | 1052 | { |
243a9253 PA |
1053 | /* There are more steps to make, and we did stop due to |
1054 | ending a stepping range. Do another step. */ | |
1055 | if (--sm->count > 0) | |
1056 | return prepare_one_step (sm); | |
af679fd0 | 1057 | |
243a9253 | 1058 | thread_fsm_set_finished (self); |
f107f563 | 1059 | } |
af679fd0 | 1060 | |
243a9253 | 1061 | return 1; |
c2d11a7d JM |
1062 | } |
1063 | ||
243a9253 | 1064 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 PA |
1065 | |
1066 | static void | |
243a9253 | 1067 | step_command_fsm_clean_up (struct thread_fsm *self) |
bfec99b2 | 1068 | { |
243a9253 PA |
1069 | struct step_command_fsm *sm = (struct step_command_fsm *) self; |
1070 | ||
1071 | if (!sm->single_inst || sm->skip_subroutines) | |
1072 | delete_longjmp_breakpoint (sm->thread); | |
1073 | } | |
1074 | ||
1075 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
1076 | commands. */ | |
1077 | ||
1078 | static enum async_reply_reason | |
1079 | step_command_fsm_async_reply_reason (struct thread_fsm *self) | |
1080 | { | |
1081 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1082 | } | |
1083 | ||
1084 | /* Prepare for one step in "step N". The actual target resumption is | |
1085 | done by the caller. Return true if we're done and should thus | |
1086 | report a stop to the user. Returns false if the target needs to be | |
1087 | resumed. */ | |
c2d11a7d | 1088 | |
243a9253 PA |
1089 | static int |
1090 | prepare_one_step (struct step_command_fsm *sm) | |
1091 | { | |
1092 | if (sm->count > 0) | |
c906108c | 1093 | { |
243a9253 PA |
1094 | struct frame_info *frame = get_current_frame (); |
1095 | ||
4e1c45ea PA |
1096 | /* Don't assume THREAD is a valid thread id. It is set to -1 if |
1097 | the longjmp breakpoint was not required. Use the | |
1098 | INFERIOR_PTID thread instead, which is the same thread when | |
1099 | THREAD is set. */ | |
1100 | struct thread_info *tp = inferior_thread (); | |
abbb1732 | 1101 | |
edb3359d | 1102 | set_step_frame (); |
c906108c | 1103 | |
243a9253 | 1104 | if (!sm->single_inst) |
c906108c | 1105 | { |
1641cfcc PA |
1106 | CORE_ADDR pc; |
1107 | ||
edb3359d | 1108 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 1109 | if (!sm->skip_subroutines |
edb3359d DJ |
1110 | && inline_skipped_frames (inferior_ptid)) |
1111 | { | |
09cee04b PA |
1112 | ptid_t resume_ptid; |
1113 | ||
1114 | /* Pretend that we've ran. */ | |
1115 | resume_ptid = user_visible_resume_ptid (1); | |
1116 | set_running (resume_ptid, 1); | |
1117 | ||
edb3359d | 1118 | step_into_inline_frame (inferior_ptid); |
243a9253 PA |
1119 | sm->count--; |
1120 | return prepare_one_step (sm); | |
edb3359d DJ |
1121 | } |
1122 | ||
1641cfcc PA |
1123 | pc = get_frame_pc (frame); |
1124 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
1125 | &tp->control.step_range_start, |
1126 | &tp->control.step_range_end); | |
5fbbeb29 | 1127 | |
c1e36e3e PA |
1128 | tp->control.may_range_step = 1; |
1129 | ||
5fbbeb29 | 1130 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 1131 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
1132 | { |
1133 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1134 | tp->control.may_range_step = 0; | |
1135 | } | |
16c381f0 | 1136 | else if (tp->control.step_range_end == 0) |
c906108c | 1137 | { |
2c02bd72 | 1138 | const char *name; |
abbb1732 | 1139 | |
1641cfcc | 1140 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
1141 | &tp->control.step_range_start, |
1142 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 1143 | error (_("Cannot find bounds of current function")); |
c906108c | 1144 | |
f8e3ef9d | 1145 | target_terminal_ours_for_output (); |
3e43a32a MS |
1146 | printf_filtered (_("Single stepping until exit from function %s," |
1147 | "\nwhich has no line number information.\n"), | |
1148 | name); | |
c906108c SS |
1149 | } |
1150 | } | |
1151 | else | |
1152 | { | |
1153 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1154 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1155 | if (!sm->skip_subroutines) |
c906108c SS |
1156 | /* It is stepi. |
1157 | Don't step over function calls, not even to functions lacking | |
1158 | line numbers. */ | |
16c381f0 | 1159 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1160 | } |
1161 | ||
243a9253 | 1162 | if (sm->skip_subroutines) |
16c381f0 | 1163 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1164 | |
243a9253 | 1165 | return 0; |
c906108c | 1166 | } |
243a9253 PA |
1167 | |
1168 | /* Done. */ | |
1169 | thread_fsm_set_finished (&sm->thread_fsm); | |
1170 | return 1; | |
c906108c | 1171 | } |
c2d11a7d | 1172 | |
c906108c SS |
1173 | \f |
1174 | /* Continue program at specified address. */ | |
1175 | ||
1176 | static void | |
fba45db2 | 1177 | jump_command (char *arg, int from_tty) |
c906108c | 1178 | { |
5af949e3 | 1179 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1180 | CORE_ADDR addr; |
c906108c SS |
1181 | struct symtabs_and_lines sals; |
1182 | struct symtab_and_line sal; | |
1183 | struct symbol *fn; | |
1184 | struct symbol *sfn; | |
6c4486e6 PA |
1185 | int async_exec; |
1186 | struct cleanup *args_chain; | |
c5aa993b | 1187 | |
c906108c | 1188 | ERROR_NO_INFERIOR; |
573cda03 | 1189 | ensure_not_tfind_mode (); |
d729566a | 1190 | ensure_valid_thread (); |
94cc34af | 1191 | ensure_not_running (); |
c906108c | 1192 | |
1777feb0 | 1193 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1194 | arg = strip_bg_char (arg, &async_exec); |
1195 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1196 | |
8bc2fe48 | 1197 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1198 | |
c906108c | 1199 | if (!arg) |
e2e0b3e5 | 1200 | error_no_arg (_("starting address")); |
c906108c | 1201 | |
39cf75f7 | 1202 | sals = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); |
c906108c SS |
1203 | if (sals.nelts != 1) |
1204 | { | |
8a3fe4f8 | 1205 | error (_("Unreasonable jump request")); |
c906108c SS |
1206 | } |
1207 | ||
1208 | sal = sals.sals[0]; | |
b8c9b27d | 1209 | xfree (sals.sals); |
c906108c | 1210 | |
6c4486e6 PA |
1211 | /* Done with ARGS. */ |
1212 | do_cleanups (args_chain); | |
1213 | ||
c906108c | 1214 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1215 | error (_("No source file has been specified.")); |
c906108c | 1216 | |
1777feb0 | 1217 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1218 | |
1777feb0 | 1219 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1220 | fn = get_frame_function (get_current_frame ()); |
1221 | sfn = find_pc_function (sal.pc); | |
1222 | if (fn != NULL && sfn != fn) | |
1223 | { | |
9e2f0ad4 | 1224 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
de5ad195 | 1225 | SYMBOL_PRINT_NAME (fn))) |
c906108c | 1226 | { |
8a3fe4f8 | 1227 | error (_("Not confirmed.")); |
c906108c SS |
1228 | /* NOTREACHED */ |
1229 | } | |
1230 | } | |
1231 | ||
c5aa993b | 1232 | if (sfn != NULL) |
c906108c | 1233 | { |
253342b8 DE |
1234 | struct obj_section *section; |
1235 | ||
c906108c | 1236 | fixup_symbol_section (sfn, 0); |
08be3fe3 | 1237 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sfn), sfn); |
253342b8 DE |
1238 | if (section_is_overlay (section) |
1239 | && !section_is_mapped (section)) | |
c906108c | 1240 | { |
3e43a32a MS |
1241 | if (!query (_("WARNING!!! Destination is in " |
1242 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1243 | { |
8a3fe4f8 | 1244 | error (_("Not confirmed.")); |
c906108c SS |
1245 | /* NOTREACHED */ |
1246 | } | |
1247 | } | |
1248 | } | |
1249 | ||
c906108c SS |
1250 | addr = sal.pc; |
1251 | ||
1252 | if (from_tty) | |
1253 | { | |
a3f17187 | 1254 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1255 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1256 | printf_filtered (".\n"); |
1257 | } | |
1258 | ||
70509625 | 1259 | clear_proceed_status (0); |
64ce06e4 | 1260 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1261 | } |
c906108c | 1262 | \f |
c906108c SS |
1263 | /* Continue program giving it specified signal. */ |
1264 | ||
1265 | static void | |
fba45db2 | 1266 | signal_command (char *signum_exp, int from_tty) |
c906108c | 1267 | { |
2ea28649 | 1268 | enum gdb_signal oursig; |
6c4486e6 PA |
1269 | int async_exec; |
1270 | struct cleanup *args_chain; | |
c906108c SS |
1271 | |
1272 | dont_repeat (); /* Too dangerous. */ | |
1273 | ERROR_NO_INFERIOR; | |
573cda03 | 1274 | ensure_not_tfind_mode (); |
d729566a | 1275 | ensure_valid_thread (); |
94cc34af | 1276 | ensure_not_running (); |
c906108c | 1277 | |
32c1e744 | 1278 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1279 | signum_exp = strip_bg_char (signum_exp, &async_exec); |
1280 | args_chain = make_cleanup (xfree, signum_exp); | |
32c1e744 | 1281 | |
8bc2fe48 | 1282 | prepare_execution_command (¤t_target, async_exec); |
32c1e744 | 1283 | |
c906108c | 1284 | if (!signum_exp) |
e2e0b3e5 | 1285 | error_no_arg (_("signal number")); |
c906108c SS |
1286 | |
1287 | /* It would be even slicker to make signal names be valid expressions, | |
1288 | (the type could be "enum $signal" or some such), then the user could | |
1289 | assign them to convenience variables. */ | |
2ea28649 | 1290 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1291 | |
a493e3e2 | 1292 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1293 | { |
1294 | /* No, try numeric. */ | |
bb518678 | 1295 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1296 | |
1297 | if (num == 0) | |
a493e3e2 | 1298 | oursig = GDB_SIGNAL_0; |
c906108c | 1299 | else |
2ea28649 | 1300 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1301 | } |
1302 | ||
c6343a91 JK |
1303 | do_cleanups (args_chain); |
1304 | ||
70509625 PA |
1305 | /* Look for threads other than the current that this command ends up |
1306 | resuming too (due to schedlock off), and warn if they'll get a | |
1307 | signal delivered. "signal 0" is used to suppress a previous | |
1308 | signal, but if the current thread is no longer the one that got | |
1309 | the signal, then the user is potentially suppressing the signal | |
1310 | of the wrong thread. */ | |
1311 | if (!non_stop) | |
1312 | { | |
1313 | struct thread_info *tp; | |
1314 | ptid_t resume_ptid; | |
1315 | int must_confirm = 0; | |
1316 | ||
1317 | /* This indicates what will be resumed. Either a single thread, | |
1318 | a whole process, or all threads of all processes. */ | |
1319 | resume_ptid = user_visible_resume_ptid (0); | |
1320 | ||
1321 | ALL_NON_EXITED_THREADS (tp) | |
1322 | { | |
1323 | if (ptid_equal (tp->ptid, inferior_ptid)) | |
1324 | continue; | |
1325 | if (!ptid_match (tp->ptid, resume_ptid)) | |
1326 | continue; | |
1327 | ||
1328 | if (tp->suspend.stop_signal != GDB_SIGNAL_0 | |
1329 | && signal_pass_state (tp->suspend.stop_signal)) | |
1330 | { | |
1331 | if (!must_confirm) | |
1332 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1333 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1334 | print_thread_id (tp), | |
70509625 PA |
1335 | gdb_signal_to_name (tp->suspend.stop_signal), |
1336 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
1337 | must_confirm = 1; | |
1338 | } | |
1339 | } | |
1340 | ||
1341 | if (must_confirm | |
43792cf0 | 1342 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1343 | "still deliver the signals noted above to their respective threads.\n" |
1344 | "Continue anyway? "), | |
43792cf0 | 1345 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1346 | error (_("Not confirmed.")); |
1347 | } | |
1348 | ||
c906108c SS |
1349 | if (from_tty) |
1350 | { | |
a493e3e2 | 1351 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1352 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1353 | else |
a3f17187 | 1354 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1355 | gdb_signal_to_name (oursig)); |
c906108c SS |
1356 | } |
1357 | ||
70509625 | 1358 | clear_proceed_status (0); |
64ce06e4 | 1359 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1360 | } |
1361 | ||
81219e53 DE |
1362 | /* Queue a signal to be delivered to the current thread. */ |
1363 | ||
1364 | static void | |
1365 | queue_signal_command (char *signum_exp, int from_tty) | |
1366 | { | |
1367 | enum gdb_signal oursig; | |
1368 | struct thread_info *tp; | |
1369 | ||
1370 | ERROR_NO_INFERIOR; | |
1371 | ensure_not_tfind_mode (); | |
1372 | ensure_valid_thread (); | |
1373 | ensure_not_running (); | |
1374 | ||
1375 | if (signum_exp == NULL) | |
1376 | error_no_arg (_("signal number")); | |
1377 | ||
1378 | /* It would be even slicker to make signal names be valid expressions, | |
1379 | (the type could be "enum $signal" or some such), then the user could | |
1380 | assign them to convenience variables. */ | |
1381 | oursig = gdb_signal_from_name (signum_exp); | |
1382 | ||
1383 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1384 | { | |
1385 | /* No, try numeric. */ | |
1386 | int num = parse_and_eval_long (signum_exp); | |
1387 | ||
1388 | if (num == 0) | |
1389 | oursig = GDB_SIGNAL_0; | |
1390 | else | |
1391 | oursig = gdb_signal_from_command (num); | |
1392 | } | |
1393 | ||
1394 | if (oursig != GDB_SIGNAL_0 | |
1395 | && !signal_pass_state (oursig)) | |
1396 | error (_("Signal handling set to not pass this signal to the program.")); | |
1397 | ||
1398 | tp = inferior_thread (); | |
1399 | tp->suspend.stop_signal = oursig; | |
1400 | } | |
1401 | ||
cfc31633 PA |
1402 | /* Data for the FSM that manages the until (with no argument) |
1403 | command. */ | |
1404 | ||
1405 | struct until_next_fsm | |
fa4cd53f | 1406 | { |
cfc31633 PA |
1407 | /* The base class. */ |
1408 | struct thread_fsm thread_fsm; | |
1409 | ||
1410 | /* The thread that as current when the command was executed. */ | |
fa4cd53f PA |
1411 | int thread; |
1412 | }; | |
1413 | ||
cfc31633 PA |
1414 | static int until_next_fsm_should_stop (struct thread_fsm *self); |
1415 | static void until_next_fsm_clean_up (struct thread_fsm *self); | |
1416 | static enum async_reply_reason | |
1417 | until_next_fsm_async_reply_reason (struct thread_fsm *self); | |
1418 | ||
1419 | /* until_next_fsm's vtable. */ | |
1420 | ||
1421 | static struct thread_fsm_ops until_next_fsm_ops = | |
1422 | { | |
1423 | NULL, /* dtor */ | |
1424 | until_next_fsm_clean_up, | |
1425 | until_next_fsm_should_stop, | |
1426 | NULL, /* return_value */ | |
1427 | until_next_fsm_async_reply_reason, | |
1428 | }; | |
1429 | ||
1430 | /* Allocate a new until_next_fsm. */ | |
1431 | ||
1432 | static struct until_next_fsm * | |
1433 | new_until_next_fsm (int thread) | |
1434 | { | |
1435 | struct until_next_fsm *sm; | |
1436 | ||
1437 | sm = XCNEW (struct until_next_fsm); | |
1438 | thread_fsm_ctor (&sm->thread_fsm, &until_next_fsm_ops); | |
1439 | ||
1440 | sm->thread = thread; | |
1441 | ||
1442 | return sm; | |
1443 | } | |
1444 | ||
1445 | /* Implementation of the 'should_stop' FSM method for the until (with | |
1446 | no arg) command. */ | |
1447 | ||
1448 | static int | |
1449 | until_next_fsm_should_stop (struct thread_fsm *self) | |
1450 | { | |
1451 | struct thread_info *tp = inferior_thread (); | |
1452 | ||
1453 | if (tp->control.stop_step) | |
1454 | thread_fsm_set_finished (self); | |
1455 | ||
1456 | return 1; | |
1457 | } | |
1458 | ||
1459 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1460 | arg) command. */ | |
186c406b TT |
1461 | |
1462 | static void | |
cfc31633 | 1463 | until_next_fsm_clean_up (struct thread_fsm *self) |
186c406b | 1464 | { |
cfc31633 | 1465 | struct until_next_fsm *sm = (struct until_next_fsm *) self; |
186c406b | 1466 | |
cfc31633 PA |
1467 | delete_longjmp_breakpoint (sm->thread); |
1468 | } | |
1469 | ||
1470 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1471 | (with no arg) command. */ | |
1472 | ||
1473 | static enum async_reply_reason | |
1474 | until_next_fsm_async_reply_reason (struct thread_fsm *self) | |
1475 | { | |
1476 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1477 | } |
1478 | ||
c906108c SS |
1479 | /* Proceed until we reach a different source line with pc greater than |
1480 | our current one or exit the function. We skip calls in both cases. | |
1481 | ||
1482 | Note that eventually this command should probably be changed so | |
1483 | that only source lines are printed out when we hit the breakpoint | |
1484 | we set. This may involve changes to wait_for_inferior and the | |
1485 | proceed status code. */ | |
1486 | ||
c906108c | 1487 | static void |
fba45db2 | 1488 | until_next_command (int from_tty) |
c906108c SS |
1489 | { |
1490 | struct frame_info *frame; | |
1491 | CORE_ADDR pc; | |
1492 | struct symbol *func; | |
1493 | struct symtab_and_line sal; | |
4e1c45ea | 1494 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1495 | int thread = tp->global_num; |
186c406b | 1496 | struct cleanup *old_chain; |
cfc31633 | 1497 | struct until_next_fsm *sm; |
c5aa993b | 1498 | |
70509625 | 1499 | clear_proceed_status (0); |
edb3359d | 1500 | set_step_frame (); |
c906108c SS |
1501 | |
1502 | frame = get_current_frame (); | |
1503 | ||
1504 | /* Step until either exited from this function or greater | |
1505 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1506 | not). */ |
c906108c | 1507 | |
1c7819ef | 1508 | pc = get_frame_pc (frame); |
c906108c | 1509 | func = find_pc_function (pc); |
c5aa993b | 1510 | |
c906108c SS |
1511 | if (!func) |
1512 | { | |
7cbd4a93 | 1513 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1514 | |
7cbd4a93 | 1515 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1516 | error (_("Execution is not within a known function.")); |
c5aa993b | 1517 | |
77e371c0 | 1518 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1519 | /* The upper-bound of step_range is exclusive. In order to make PC |
1520 | within the range, set the step_range_end with PC + 1. */ | |
1521 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1522 | } |
1523 | else | |
1524 | { | |
1525 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1526 | |
16c381f0 JK |
1527 | tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
1528 | tp->control.step_range_end = sal.end; | |
c906108c | 1529 | } |
c1e36e3e | 1530 | tp->control.may_range_step = 1; |
c5aa993b | 1531 | |
16c381f0 | 1532 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1533 | |
186c406b TT |
1534 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
1535 | old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
1536 | ||
5d5658a1 | 1537 | sm = new_until_next_fsm (tp->global_num); |
cfc31633 PA |
1538 | tp->thread_fsm = &sm->thread_fsm; |
1539 | discard_cleanups (old_chain); | |
fa4cd53f | 1540 | |
cfc31633 | 1541 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1542 | } |
1543 | ||
c5aa993b | 1544 | static void |
fba45db2 | 1545 | until_command (char *arg, int from_tty) |
c906108c | 1546 | { |
6c4486e6 PA |
1547 | int async_exec; |
1548 | struct cleanup *args_chain; | |
43ff13b4 | 1549 | |
4247603b | 1550 | ERROR_NO_INFERIOR; |
573cda03 | 1551 | ensure_not_tfind_mode (); |
4247603b PA |
1552 | ensure_valid_thread (); |
1553 | ensure_not_running (); | |
573cda03 | 1554 | |
1777feb0 | 1555 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1556 | arg = strip_bg_char (arg, &async_exec); |
1557 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1558 | |
8bc2fe48 | 1559 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1560 | |
c906108c | 1561 | if (arg) |
ae66c1fc | 1562 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1563 | else |
1564 | until_next_command (from_tty); | |
6c4486e6 PA |
1565 | |
1566 | /* Done with ARGS. */ | |
1567 | do_cleanups (args_chain); | |
c906108c | 1568 | } |
ae66c1fc EZ |
1569 | |
1570 | static void | |
1571 | advance_command (char *arg, int from_tty) | |
1572 | { | |
6c4486e6 PA |
1573 | int async_exec; |
1574 | struct cleanup *args_chain; | |
ae66c1fc | 1575 | |
4247603b | 1576 | ERROR_NO_INFERIOR; |
573cda03 | 1577 | ensure_not_tfind_mode (); |
4247603b PA |
1578 | ensure_valid_thread (); |
1579 | ensure_not_running (); | |
573cda03 | 1580 | |
ae66c1fc | 1581 | if (arg == NULL) |
e2e0b3e5 | 1582 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1583 | |
1584 | /* Find out whether we must run in the background. */ | |
6c4486e6 PA |
1585 | arg = strip_bg_char (arg, &async_exec); |
1586 | args_chain = make_cleanup (xfree, arg); | |
ae66c1fc | 1587 | |
8bc2fe48 | 1588 | prepare_execution_command (¤t_target, async_exec); |
ae66c1fc EZ |
1589 | |
1590 | until_break_command (arg, from_tty, 1); | |
6c4486e6 PA |
1591 | |
1592 | /* Done with ARGS. */ | |
1593 | do_cleanups (args_chain); | |
ae66c1fc | 1594 | } |
c906108c | 1595 | \f |
cc72b2a2 | 1596 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1597 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1598 | right after an inferior call has finished. */ | |
f941662f | 1599 | |
cc72b2a2 | 1600 | struct value * |
0700e23e | 1601 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1602 | { |
0700e23e | 1603 | struct regcache *stop_regs; |
cc72b2a2 | 1604 | struct gdbarch *gdbarch; |
44e5158b | 1605 | struct value *value; |
0700e23e | 1606 | struct cleanup *cleanup; |
cc72b2a2 | 1607 | |
0700e23e PA |
1608 | stop_regs = regcache_dup (get_current_regcache ()); |
1609 | cleanup = make_cleanup_regcache_xfree (stop_regs); | |
cc72b2a2 KP |
1610 | |
1611 | gdbarch = get_regcache_arch (stop_regs); | |
44e5158b | 1612 | |
f168693b | 1613 | value_type = check_typedef (value_type); |
44e5158b | 1614 | gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID); |
11cf8741 | 1615 | |
92ad9cd9 AC |
1616 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1617 | call, it's possible (with no help from the architecture vector) | |
1618 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1619 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1620 | inferior function call code. In fact, when inferior function |
1621 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1622 | |
6a3a010b | 1623 | switch (gdbarch_return_value (gdbarch, function, value_type, |
c055b101 | 1624 | NULL, NULL, NULL)) |
44e5158b | 1625 | { |
750eb019 AC |
1626 | case RETURN_VALUE_REGISTER_CONVENTION: |
1627 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1628 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1629 | value = allocate_value (value_type); |
6a3a010b | 1630 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
990a07ab | 1631 | value_contents_raw (value), NULL); |
750eb019 AC |
1632 | break; |
1633 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1634 | value = NULL; | |
1635 | break; | |
1636 | default: | |
e2e0b3e5 | 1637 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1638 | } |
bb472c1e | 1639 | |
cc72b2a2 KP |
1640 | do_cleanups (cleanup); |
1641 | ||
1642 | return value; | |
1643 | } | |
1644 | ||
243a9253 PA |
1645 | /* The captured function return value/type and its position in the |
1646 | value history. */ | |
cc72b2a2 | 1647 | |
243a9253 | 1648 | struct return_value_info |
cc72b2a2 | 1649 | { |
243a9253 PA |
1650 | /* The captured return value. May be NULL if we weren't able to |
1651 | retrieve it. See get_return_value. */ | |
1652 | struct value *value; | |
1653 | ||
1654 | /* The return type. In some cases, we'll not be able extract the | |
1655 | return value, but we always know the type. */ | |
1656 | struct type *type; | |
1657 | ||
1658 | /* If we captured a value, this is the value history index. */ | |
1659 | int value_history_index; | |
1660 | }; | |
1661 | ||
1662 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1663 | |
243a9253 PA |
1664 | static void |
1665 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1666 | { | |
1667 | if (rv->value != NULL) | |
31db7b6c | 1668 | { |
79a45b7d | 1669 | struct value_print_options opts; |
f99d8bf4 PA |
1670 | struct ui_file *stb; |
1671 | struct cleanup *old_chain; | |
79a45b7d | 1672 | |
31db7b6c | 1673 | /* Print it. */ |
f99d8bf4 PA |
1674 | stb = mem_fileopen (); |
1675 | old_chain = make_cleanup_ui_file_delete (stb); | |
31db7b6c MK |
1676 | ui_out_text (uiout, "Value returned is "); |
1677 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", | |
243a9253 | 1678 | rv->value_history_index); |
31db7b6c | 1679 | ui_out_text (uiout, " = "); |
2a998fc0 | 1680 | get_no_prettyformat_print_options (&opts); |
243a9253 | 1681 | value_print (rv->value, stb, &opts); |
31db7b6c MK |
1682 | ui_out_field_stream (uiout, "return-value", stb); |
1683 | ui_out_text (uiout, "\n"); | |
1d751abe | 1684 | do_cleanups (old_chain); |
31db7b6c MK |
1685 | } |
1686 | else | |
1687 | { | |
2f41223f AT |
1688 | struct cleanup *oldchain; |
1689 | char *type_name; | |
1690 | ||
243a9253 | 1691 | type_name = type_to_string (rv->type); |
2f41223f | 1692 | oldchain = make_cleanup (xfree, type_name); |
31db7b6c | 1693 | ui_out_text (uiout, "Value returned has type: "); |
2f41223f | 1694 | ui_out_field_string (uiout, "return-type", type_name); |
1d751abe PA |
1695 | ui_out_text (uiout, "."); |
1696 | ui_out_text (uiout, " Cannot determine contents\n"); | |
2f41223f | 1697 | do_cleanups (oldchain); |
31db7b6c | 1698 | } |
11cf8741 JM |
1699 | } |
1700 | ||
243a9253 PA |
1701 | /* Print the result of a function at the end of a 'finish' command. |
1702 | RV points at an object representing the captured return value/type | |
1703 | and its position in the value history. */ | |
1704 | ||
1705 | void | |
1706 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1707 | { | |
1708 | if (rv->type == NULL || TYPE_CODE (rv->type) == TYPE_CODE_VOID) | |
1709 | return; | |
1710 | ||
1711 | TRY | |
1712 | { | |
1713 | /* print_return_value_1 can throw an exception in some | |
1714 | circumstances. We need to catch this so that we still | |
1715 | delete the breakpoint. */ | |
1716 | print_return_value_1 (uiout, rv); | |
1717 | } | |
1718 | CATCH (ex, RETURN_MASK_ALL) | |
1719 | { | |
1720 | exception_print (gdb_stdout, ex); | |
1721 | } | |
1722 | END_CATCH | |
1723 | } | |
1724 | ||
1725 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1726 | |
243a9253 | 1727 | struct finish_command_fsm |
43ff13b4 | 1728 | { |
243a9253 PA |
1729 | /* The base class. */ |
1730 | struct thread_fsm thread_fsm; | |
1731 | ||
1732 | /* The thread that was current when the command was executed. */ | |
fa4cd53f | 1733 | int thread; |
243a9253 PA |
1734 | |
1735 | /* The momentary breakpoint set at the function's return address in | |
1736 | the caller. */ | |
43ff13b4 | 1737 | struct breakpoint *breakpoint; |
243a9253 PA |
1738 | |
1739 | /* The function that we're stepping out of. */ | |
bfec99b2 | 1740 | struct symbol *function; |
8a6c4031 | 1741 | |
243a9253 PA |
1742 | /* If the FSM finishes successfully, this stores the function's |
1743 | return value. */ | |
1744 | struct return_value_info return_value; | |
bfec99b2 | 1745 | }; |
c5aa993b | 1746 | |
243a9253 PA |
1747 | static int finish_command_fsm_should_stop (struct thread_fsm *self); |
1748 | static void finish_command_fsm_clean_up (struct thread_fsm *self); | |
1749 | static struct return_value_info * | |
1750 | finish_command_fsm_return_value (struct thread_fsm *self); | |
1751 | static enum async_reply_reason | |
1752 | finish_command_fsm_async_reply_reason (struct thread_fsm *self); | |
1753 | ||
1754 | /* finish_command_fsm's vtable. */ | |
1755 | ||
1756 | static struct thread_fsm_ops finish_command_fsm_ops = | |
1757 | { | |
1758 | NULL, /* dtor */ | |
1759 | finish_command_fsm_clean_up, | |
1760 | finish_command_fsm_should_stop, | |
1761 | finish_command_fsm_return_value, | |
1762 | finish_command_fsm_async_reply_reason, | |
1763 | }; | |
1764 | ||
1765 | /* Allocate a new finish_command_fsm. */ | |
1766 | ||
1767 | static struct finish_command_fsm * | |
1768 | new_finish_command_fsm (int thread) | |
bfec99b2 | 1769 | { |
243a9253 PA |
1770 | struct finish_command_fsm *sm; |
1771 | ||
1772 | sm = XCNEW (struct finish_command_fsm); | |
1773 | thread_fsm_ctor (&sm->thread_fsm, &finish_command_fsm_ops); | |
1774 | ||
1775 | sm->thread = thread; | |
1776 | ||
1777 | return sm; | |
1778 | } | |
347bddb7 | 1779 | |
243a9253 PA |
1780 | /* Implementation of the 'should_stop' FSM method for the finish |
1781 | commands. Detects whether the thread stepped out of the function | |
1782 | successfully, and if so, captures the function's return value and | |
1783 | marks the FSM finished. */ | |
1784 | ||
1785 | static int | |
1786 | finish_command_fsm_should_stop (struct thread_fsm *self) | |
1787 | { | |
1788 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
1789 | struct return_value_info *rv = &f->return_value; | |
5d5658a1 | 1790 | struct thread_info *tp = find_thread_global_id (f->thread); |
243a9253 PA |
1791 | |
1792 | if (f->function != NULL | |
1793 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
1794 | f->breakpoint) != NULL) | |
43ff13b4 | 1795 | { |
243a9253 PA |
1796 | /* We're done. */ |
1797 | thread_fsm_set_finished (self); | |
bfec99b2 | 1798 | |
243a9253 PA |
1799 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (f->function)); |
1800 | if (rv->type == NULL) | |
1801 | internal_error (__FILE__, __LINE__, | |
1802 | _("finish_command: function has no target type")); | |
f5871ec0 | 1803 | |
243a9253 | 1804 | if (TYPE_CODE (rv->type) != TYPE_CODE_VOID) |
40c549d6 | 1805 | { |
243a9253 PA |
1806 | struct value *func; |
1807 | ||
1808 | func = read_var_value (f->function, NULL, get_current_frame ()); | |
0700e23e | 1809 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1810 | if (rv->value != NULL) |
1811 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1812 | } |
1813 | } | |
1814 | else if (tp->control.stop_step) | |
1815 | { | |
1816 | /* Finishing from an inline frame, or reverse finishing. In | |
1817 | either case, there's no way to retrieve the return value. */ | |
1818 | thread_fsm_set_finished (self); | |
1819 | } | |
fa4cd53f | 1820 | |
243a9253 PA |
1821 | return 1; |
1822 | } | |
40c549d6 | 1823 | |
243a9253 PA |
1824 | /* Implementation of the 'clean_up' FSM method for the finish |
1825 | commands. */ | |
fa4cd53f | 1826 | |
243a9253 PA |
1827 | static void |
1828 | finish_command_fsm_clean_up (struct thread_fsm *self) | |
1829 | { | |
1830 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
fa4cd53f | 1831 | |
243a9253 PA |
1832 | if (f->breakpoint != NULL) |
1833 | { | |
1834 | delete_breakpoint (f->breakpoint); | |
1835 | f->breakpoint = NULL; | |
43ff13b4 | 1836 | } |
243a9253 PA |
1837 | delete_longjmp_breakpoint (f->thread); |
1838 | } | |
f941662f | 1839 | |
243a9253 PA |
1840 | /* Implementation of the 'return_value' FSM method for the finish |
1841 | commands. */ | |
1842 | ||
1843 | static struct return_value_info * | |
1844 | finish_command_fsm_return_value (struct thread_fsm *self) | |
1845 | { | |
1846 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
1847 | ||
1848 | return &f->return_value; | |
43ff13b4 JM |
1849 | } |
1850 | ||
243a9253 PA |
1851 | /* Implementation of the 'async_reply_reason' FSM method for the |
1852 | finish commands. */ | |
1853 | ||
1854 | static enum async_reply_reason | |
1855 | finish_command_fsm_async_reply_reason (struct thread_fsm *self) | |
604ead4a | 1856 | { |
243a9253 PA |
1857 | if (execution_direction == EXEC_REVERSE) |
1858 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1859 | else | |
1860 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1861 | } |
1862 | ||
b2175913 MS |
1863 | /* finish_backward -- helper function for finish_command. */ |
1864 | ||
1865 | static void | |
243a9253 | 1866 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1867 | { |
1868 | struct symtab_and_line sal; | |
1869 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1870 | CORE_ADDR pc; |
b2175913 | 1871 | CORE_ADDR func_addr; |
b2175913 | 1872 | |
1c7819ef PA |
1873 | pc = get_frame_pc (get_current_frame ()); |
1874 | ||
1875 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1876 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1877 | |
1878 | sal = find_pc_line (func_addr, 0); | |
1879 | ||
9da8c2a0 | 1880 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1881 | /* Special case: if we're sitting at the function entry point, |
1882 | then all we need to do is take a reverse singlestep. We | |
1883 | don't need to set a breakpoint, and indeed it would do us | |
1884 | no good to do so. | |
1885 | ||
1886 | Note that this can only happen at frame #0, since there's | |
1887 | no way that a function up the stack can have a return address | |
1888 | that's equal to its entry point. */ | |
1889 | ||
1c7819ef | 1890 | if (sal.pc != pc) |
b2175913 | 1891 | { |
a6d9a66e UW |
1892 | struct frame_info *frame = get_selected_frame (NULL); |
1893 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1894 | struct symtab_and_line sr_sal; |
1895 | ||
1896 | /* Set a step-resume at the function's entry point. Once that's | |
1897 | hit, we'll do one more step backwards. */ | |
1898 | init_sal (&sr_sal); | |
1899 | sr_sal.pc = sal.pc; | |
1900 | sr_sal.pspace = get_frame_program_space (frame); | |
1901 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1902 | sr_sal, null_frame_id); | |
a6d9a66e | 1903 | |
64ce06e4 | 1904 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1905 | } |
1906 | else | |
b2175913 | 1907 | { |
9da8c2a0 PA |
1908 | /* We're almost there -- we just need to back up by one more |
1909 | single-step. */ | |
16c381f0 | 1910 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1911 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1912 | } |
b2175913 MS |
1913 | } |
1914 | ||
243a9253 PA |
1915 | /* finish_forward -- helper function for finish_command. FRAME is the |
1916 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1917 | |
1918 | static void | |
243a9253 | 1919 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1920 | { |
def166f6 | 1921 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1922 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1923 | struct symtab_and_line sal; |
1924 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1925 | |
1926 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1927 | sal.pc = get_frame_pc (frame); | |
1928 | ||
243a9253 PA |
1929 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1930 | get_stack_frame_id (frame), | |
1931 | bp_finish); | |
b2175913 | 1932 | |
c70a6932 JK |
1933 | /* set_momentary_breakpoint invalidates FRAME. */ |
1934 | frame = NULL; | |
1935 | ||
def166f6 | 1936 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1937 | |
46c03469 | 1938 | /* We want to print return value, please... */ |
16c381f0 | 1939 | tp->control.proceed_to_finish = 1; |
b2175913 | 1940 | |
243a9253 | 1941 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1942 | } |
1943 | ||
e3b5daf9 MM |
1944 | /* Skip frames for "finish". */ |
1945 | ||
1946 | static struct frame_info * | |
1947 | skip_finish_frames (struct frame_info *frame) | |
1948 | { | |
1949 | struct frame_info *start; | |
1950 | ||
1951 | do | |
1952 | { | |
1953 | start = frame; | |
1954 | ||
1955 | frame = skip_tailcall_frames (frame); | |
1956 | if (frame == NULL) | |
1957 | break; | |
1958 | ||
1959 | frame = skip_unwritable_frames (frame); | |
1960 | if (frame == NULL) | |
1961 | break; | |
1962 | } | |
1963 | while (start != frame); | |
1964 | ||
1965 | return frame; | |
1966 | } | |
1967 | ||
f941662f MK |
1968 | /* "finish": Set a temporary breakpoint at the place the selected |
1969 | frame will return to, then continue. */ | |
c906108c SS |
1970 | |
1971 | static void | |
fba45db2 | 1972 | finish_command (char *arg, int from_tty) |
c906108c | 1973 | { |
52f0bd74 | 1974 | struct frame_info *frame; |
6c4486e6 PA |
1975 | int async_exec; |
1976 | struct cleanup *args_chain; | |
243a9253 PA |
1977 | struct finish_command_fsm *sm; |
1978 | struct thread_info *tp; | |
43ff13b4 | 1979 | |
4247603b | 1980 | ERROR_NO_INFERIOR; |
573cda03 | 1981 | ensure_not_tfind_mode (); |
4247603b PA |
1982 | ensure_valid_thread (); |
1983 | ensure_not_running (); | |
573cda03 | 1984 | |
f941662f | 1985 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1986 | arg = strip_bg_char (arg, &async_exec); |
1987 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1988 | |
8bc2fe48 | 1989 | prepare_execution_command (¤t_target, async_exec); |
c906108c SS |
1990 | |
1991 | if (arg) | |
8a3fe4f8 | 1992 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1993 | |
6c4486e6 PA |
1994 | /* Done with ARGS. */ |
1995 | do_cleanups (args_chain); | |
1996 | ||
206415a3 | 1997 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1998 | if (frame == 0) |
8a3fe4f8 | 1999 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 2000 | |
70509625 | 2001 | clear_proceed_status (0); |
c906108c | 2002 | |
243a9253 PA |
2003 | tp = inferior_thread (); |
2004 | ||
5d5658a1 | 2005 | sm = new_finish_command_fsm (tp->global_num); |
243a9253 PA |
2006 | |
2007 | tp->thread_fsm = &sm->thread_fsm; | |
2008 | ||
edb3359d | 2009 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 2010 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
2011 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
2012 | == INLINE_FRAME) | |
2013 | { | |
2014 | /* Claim we are stepping in the calling frame. An empty step | |
2015 | range means that we will stop once we aren't in a function | |
2016 | called by that frame. We don't use the magic "1" value for | |
2017 | step_range_end, because then infrun will think this is nexti, | |
2018 | and not step over the rest of this inlined function call. */ | |
edb3359d | 2019 | struct symtab_and_line empty_sal; |
abbb1732 | 2020 | |
edb3359d DJ |
2021 | init_sal (&empty_sal); |
2022 | set_step_info (frame, empty_sal); | |
16c381f0 JK |
2023 | tp->control.step_range_start = get_frame_pc (frame); |
2024 | tp->control.step_range_end = tp->control.step_range_start; | |
2025 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
2026 | |
2027 | /* Print info on the selected frame, including level number but not | |
2028 | source. */ | |
2029 | if (from_tty) | |
2030 | { | |
2031 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 2032 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
2033 | } |
2034 | ||
64ce06e4 | 2035 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
2036 | return; |
2037 | } | |
2038 | ||
c906108c SS |
2039 | /* Find the function we will return from. */ |
2040 | ||
243a9253 | 2041 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 2042 | |
f941662f MK |
2043 | /* Print info on the selected frame, including level number but not |
2044 | source. */ | |
c906108c SS |
2045 | if (from_tty) |
2046 | { | |
b2175913 MS |
2047 | if (execution_direction == EXEC_REVERSE) |
2048 | printf_filtered (_("Run back to call of ")); | |
2049 | else | |
743649fd | 2050 | { |
243a9253 | 2051 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
2052 | && !query (_("warning: Function %s does not return normally.\n" |
2053 | "Try to finish anyway? "), | |
243a9253 | 2054 | SYMBOL_PRINT_NAME (sm->function))) |
743649fd MW |
2055 | error (_("Not confirmed.")); |
2056 | printf_filtered (_("Run till exit from ")); | |
2057 | } | |
b2175913 | 2058 | |
08d72866 | 2059 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
2060 | } |
2061 | ||
b2175913 | 2062 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 2063 | finish_backward (sm); |
b2175913 | 2064 | else |
33b4777c | 2065 | { |
e3b5daf9 | 2066 | frame = skip_finish_frames (frame); |
7eb89530 | 2067 | |
33b4777c MM |
2068 | if (frame == NULL) |
2069 | error (_("Cannot find the caller frame.")); | |
2070 | ||
2071 | finish_forward (sm, frame); | |
2072 | } | |
c906108c SS |
2073 | } |
2074 | \f | |
f941662f | 2075 | |
c906108c | 2076 | static void |
fba45db2 | 2077 | program_info (char *args, int from_tty) |
c906108c | 2078 | { |
347bddb7 PA |
2079 | bpstat bs; |
2080 | int num, stat; | |
2081 | struct thread_info *tp; | |
2082 | ptid_t ptid; | |
c5aa993b | 2083 | |
c906108c SS |
2084 | if (!target_has_execution) |
2085 | { | |
a3f17187 | 2086 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
2087 | return; |
2088 | } | |
2089 | ||
347bddb7 PA |
2090 | if (non_stop) |
2091 | ptid = inferior_ptid; | |
2092 | else | |
2093 | { | |
2094 | struct target_waitstatus ws; | |
abbb1732 | 2095 | |
347bddb7 PA |
2096 | get_last_target_status (&ptid, &ws); |
2097 | } | |
2098 | ||
2099 | if (ptid_equal (ptid, null_ptid) || is_exited (ptid)) | |
2100 | error (_("Invalid selected thread.")); | |
2101 | else if (is_running (ptid)) | |
2102 | error (_("Selected thread is running.")); | |
2103 | ||
e09875d4 | 2104 | tp = find_thread_ptid (ptid); |
16c381f0 | 2105 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
2106 | stat = bpstat_num (&bs, &num); |
2107 | ||
c906108c | 2108 | target_files_info (); |
5af949e3 | 2109 | printf_filtered (_("Program stopped at %s.\n"), |
f5656ead | 2110 | paddress (target_gdbarch (), stop_pc)); |
16c381f0 | 2111 | if (tp->control.stop_step) |
a3f17187 | 2112 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 2113 | else if (stat != 0) |
c906108c SS |
2114 | { |
2115 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 2116 | isn't as strange as it seems. */ |
8671a17b | 2117 | while (stat != 0) |
c906108c | 2118 | { |
8671a17b | 2119 | if (stat < 0) |
c906108c | 2120 | { |
3e43a32a MS |
2121 | printf_filtered (_("It stopped at a breakpoint " |
2122 | "that has since been deleted.\n")); | |
c906108c SS |
2123 | } |
2124 | else | |
a3f17187 | 2125 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 2126 | stat = bpstat_num (&bs, &num); |
c906108c SS |
2127 | } |
2128 | } | |
a493e3e2 | 2129 | else if (tp->suspend.stop_signal != GDB_SIGNAL_0) |
c906108c | 2130 | { |
a3f17187 | 2131 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
2ea28649 PA |
2132 | gdb_signal_to_name (tp->suspend.stop_signal), |
2133 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
c906108c SS |
2134 | } |
2135 | ||
0d41ba00 | 2136 | if (from_tty) |
c906108c | 2137 | { |
3e43a32a MS |
2138 | printf_filtered (_("Type \"info stack\" or \"info " |
2139 | "registers\" for more information.\n")); | |
c906108c SS |
2140 | } |
2141 | } | |
2142 | \f | |
2143 | static void | |
fba45db2 | 2144 | environment_info (char *var, int from_tty) |
c906108c SS |
2145 | { |
2146 | if (var) | |
2147 | { | |
3f81c18a | 2148 | char *val = get_in_environ (current_inferior ()->environment, var); |
abbb1732 | 2149 | |
c906108c SS |
2150 | if (val) |
2151 | { | |
2152 | puts_filtered (var); | |
2153 | puts_filtered (" = "); | |
2154 | puts_filtered (val); | |
2155 | puts_filtered ("\n"); | |
2156 | } | |
2157 | else | |
2158 | { | |
2159 | puts_filtered ("Environment variable \""); | |
2160 | puts_filtered (var); | |
2161 | puts_filtered ("\" not defined.\n"); | |
2162 | } | |
2163 | } | |
2164 | else | |
2165 | { | |
3f81c18a | 2166 | char **vector = environ_vector (current_inferior ()->environment); |
abbb1732 | 2167 | |
c906108c SS |
2168 | while (*vector) |
2169 | { | |
2170 | puts_filtered (*vector++); | |
2171 | puts_filtered ("\n"); | |
2172 | } | |
2173 | } | |
2174 | } | |
2175 | ||
2176 | static void | |
fba45db2 | 2177 | set_environment_command (char *arg, int from_tty) |
c906108c | 2178 | { |
52f0bd74 | 2179 | char *p, *val, *var; |
c906108c SS |
2180 | int nullset = 0; |
2181 | ||
2182 | if (arg == 0) | |
e2e0b3e5 | 2183 | error_no_arg (_("environment variable and value")); |
c906108c | 2184 | |
1777feb0 | 2185 | /* Find seperation between variable name and value. */ |
c906108c SS |
2186 | p = (char *) strchr (arg, '='); |
2187 | val = (char *) strchr (arg, ' '); | |
2188 | ||
2189 | if (p != 0 && val != 0) | |
2190 | { | |
2191 | /* We have both a space and an equals. If the space is before the | |
c5aa993b | 2192 | equals, walk forward over the spaces til we see a nonspace |
1777feb0 | 2193 | (possibly the equals). */ |
c906108c SS |
2194 | if (p > val) |
2195 | while (*val == ' ') | |
2196 | val++; | |
2197 | ||
2198 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 2199 | take the char following the spaces. */ |
c906108c SS |
2200 | if (p > val) |
2201 | p = val - 1; | |
2202 | } | |
2203 | else if (val != 0 && p == 0) | |
2204 | p = val; | |
2205 | ||
2206 | if (p == arg) | |
e2e0b3e5 | 2207 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2208 | |
2209 | if (p == 0 || p[1] == 0) | |
2210 | { | |
2211 | nullset = 1; | |
2212 | if (p == 0) | |
1777feb0 | 2213 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2214 | } |
2215 | else | |
2216 | { | |
1777feb0 | 2217 | /* Not setting variable value to null. */ |
c906108c SS |
2218 | val = p + 1; |
2219 | while (*val == ' ' || *val == '\t') | |
2220 | val++; | |
2221 | } | |
2222 | ||
c5aa993b JM |
2223 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2224 | p--; | |
c906108c SS |
2225 | |
2226 | var = savestring (arg, p - arg); | |
2227 | if (nullset) | |
2228 | { | |
3e43a32a MS |
2229 | printf_filtered (_("Setting environment variable " |
2230 | "\"%s\" to null value.\n"), | |
a3f17187 | 2231 | var); |
3f81c18a | 2232 | set_in_environ (current_inferior ()->environment, var, ""); |
c906108c SS |
2233 | } |
2234 | else | |
3f81c18a | 2235 | set_in_environ (current_inferior ()->environment, var, val); |
b8c9b27d | 2236 | xfree (var); |
c906108c SS |
2237 | } |
2238 | ||
2239 | static void | |
fba45db2 | 2240 | unset_environment_command (char *var, int from_tty) |
c906108c SS |
2241 | { |
2242 | if (var == 0) | |
2243 | { | |
2244 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 2245 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2246 | if (!from_tty || query (_("Delete all environment variables? "))) |
c906108c | 2247 | { |
3f81c18a VP |
2248 | free_environ (current_inferior ()->environment); |
2249 | current_inferior ()->environment = make_environ (); | |
c906108c SS |
2250 | } |
2251 | } | |
2252 | else | |
3f81c18a | 2253 | unset_in_environ (current_inferior ()->environment, var); |
c906108c SS |
2254 | } |
2255 | ||
1777feb0 | 2256 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2257 | |
2258 | static const char path_var_name[] = "PATH"; | |
2259 | ||
c906108c | 2260 | static void |
fba45db2 | 2261 | path_info (char *args, int from_tty) |
c906108c SS |
2262 | { |
2263 | puts_filtered ("Executable and object file path: "); | |
3e43a32a MS |
2264 | puts_filtered (get_in_environ (current_inferior ()->environment, |
2265 | path_var_name)); | |
c906108c SS |
2266 | puts_filtered ("\n"); |
2267 | } | |
2268 | ||
2269 | /* Add zero or more directories to the front of the execution path. */ | |
2270 | ||
2271 | static void | |
fba45db2 | 2272 | path_command (char *dirname, int from_tty) |
c906108c SS |
2273 | { |
2274 | char *exec_path; | |
2275 | char *env; | |
abbb1732 | 2276 | |
c906108c | 2277 | dont_repeat (); |
3f81c18a | 2278 | env = get_in_environ (current_inferior ()->environment, path_var_name); |
1777feb0 | 2279 | /* Can be null if path is not set. */ |
c906108c SS |
2280 | if (!env) |
2281 | env = ""; | |
4fcf66da | 2282 | exec_path = xstrdup (env); |
c906108c | 2283 | mod_path (dirname, &exec_path); |
3f81c18a | 2284 | set_in_environ (current_inferior ()->environment, path_var_name, exec_path); |
b8c9b27d | 2285 | xfree (exec_path); |
c906108c | 2286 | if (from_tty) |
c5aa993b | 2287 | path_info ((char *) NULL, from_tty); |
c906108c | 2288 | } |
c906108c | 2289 | \f |
c5aa993b | 2290 | |
1292279a PA |
2291 | /* Print out the register NAME with value VAL, to FILE, in the default |
2292 | fashion. */ | |
2293 | ||
2294 | static void | |
2295 | default_print_one_register_info (struct ui_file *file, | |
2296 | const char *name, | |
2297 | struct value *val) | |
2298 | { | |
2299 | struct type *regtype = value_type (val); | |
f69d9aef | 2300 | int print_raw_format; |
1292279a PA |
2301 | |
2302 | fputs_filtered (name, file); | |
2303 | print_spaces_filtered (15 - strlen (name), file); | |
2304 | ||
f69d9aef AB |
2305 | print_raw_format = (value_entirely_available (val) |
2306 | && !value_optimized_out (val)); | |
1292279a PA |
2307 | |
2308 | /* If virtual format is floating, print it that way, and in raw | |
2309 | hex. */ | |
2310 | if (TYPE_CODE (regtype) == TYPE_CODE_FLT | |
2311 | || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT) | |
2312 | { | |
1292279a PA |
2313 | struct value_print_options opts; |
2314 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
2315 | enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (regtype)); | |
2316 | ||
2317 | get_user_print_options (&opts); | |
2318 | opts.deref_ref = 1; | |
2319 | ||
2320 | val_print (regtype, | |
2321 | value_contents_for_printing (val), | |
2322 | value_embedded_offset (val), 0, | |
2323 | file, 0, val, &opts, current_language); | |
2324 | ||
f69d9aef AB |
2325 | if (print_raw_format) |
2326 | { | |
2327 | fprintf_filtered (file, "\t(raw "); | |
2328 | print_hex_chars (file, valaddr, TYPE_LENGTH (regtype), byte_order); | |
2329 | fprintf_filtered (file, ")"); | |
2330 | } | |
1292279a PA |
2331 | } |
2332 | else | |
2333 | { | |
2334 | struct value_print_options opts; | |
2335 | ||
2336 | /* Print the register in hex. */ | |
2337 | get_formatted_print_options (&opts, 'x'); | |
2338 | opts.deref_ref = 1; | |
2339 | val_print (regtype, | |
2340 | value_contents_for_printing (val), | |
2341 | value_embedded_offset (val), 0, | |
2342 | file, 0, val, &opts, current_language); | |
2343 | /* If not a vector register, print it also according to its | |
2344 | natural format. */ | |
f69d9aef | 2345 | if (print_raw_format && TYPE_VECTOR (regtype) == 0) |
1292279a PA |
2346 | { |
2347 | get_user_print_options (&opts); | |
2348 | opts.deref_ref = 1; | |
2349 | fprintf_filtered (file, "\t"); | |
2350 | val_print (regtype, | |
2351 | value_contents_for_printing (val), | |
2352 | value_embedded_offset (val), 0, | |
2353 | file, 0, val, &opts, current_language); | |
2354 | } | |
2355 | } | |
2356 | ||
2357 | fprintf_filtered (file, "\n"); | |
2358 | } | |
2359 | ||
1777feb0 | 2360 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2361 | registers (print_all == 1) or all non-float and non-vector |
2362 | registers (print_all == 0). | |
c906108c SS |
2363 | |
2364 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2365 | register(s) one per line is good enough. If a different format is |
2366 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2367 | regs), or there is an existing convention for showing all the | |
2368 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2369 | provide that format. */ | |
c906108c | 2370 | |
666e11c5 | 2371 | void |
0ab7a791 AC |
2372 | default_print_registers_info (struct gdbarch *gdbarch, |
2373 | struct ui_file *file, | |
2374 | struct frame_info *frame, | |
2375 | int regnum, int print_all) | |
c906108c | 2376 | { |
0ab7a791 | 2377 | int i; |
a4bd449d UW |
2378 | const int numregs = gdbarch_num_regs (gdbarch) |
2379 | + gdbarch_num_pseudo_regs (gdbarch); | |
0ab7a791 | 2380 | |
c906108c SS |
2381 | for (i = 0; i < numregs; i++) |
2382 | { | |
4782dc19 AC |
2383 | /* Decide between printing all regs, non-float / vector regs, or |
2384 | specific reg. */ | |
c5aa993b JM |
2385 | if (regnum == -1) |
2386 | { | |
f9418c0f | 2387 | if (print_all) |
4782dc19 | 2388 | { |
f9418c0f | 2389 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2390 | continue; |
f9418c0f AC |
2391 | } |
2392 | else | |
2393 | { | |
2394 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2395 | continue; |
2396 | } | |
c5aa993b JM |
2397 | } |
2398 | else | |
2399 | { | |
2400 | if (i != regnum) | |
2401 | continue; | |
2402 | } | |
c906108c SS |
2403 | |
2404 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 2405 | processor, so don't display anything. */ |
a4bd449d UW |
2406 | if (gdbarch_register_name (gdbarch, i) == NULL |
2407 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2408 | continue; |
2409 | ||
1292279a PA |
2410 | default_print_one_register_info (file, |
2411 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2412 | value_of_register (i, frame)); |
c906108c SS |
2413 | } |
2414 | } | |
c906108c | 2415 | |
c906108c | 2416 | void |
fba45db2 | 2417 | registers_info (char *addr_exp, int fpregs) |
c906108c | 2418 | { |
206415a3 | 2419 | struct frame_info *frame; |
a4bd449d | 2420 | struct gdbarch *gdbarch; |
c906108c SS |
2421 | |
2422 | if (!target_has_registers) | |
8a3fe4f8 | 2423 | error (_("The program has no registers now.")); |
206415a3 | 2424 | frame = get_selected_frame (NULL); |
a4bd449d | 2425 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2426 | |
2427 | if (!addr_exp) | |
2428 | { | |
a4bd449d | 2429 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2430 | frame, -1, fpregs); |
c906108c SS |
2431 | return; |
2432 | } | |
2433 | ||
f9418c0f | 2434 | while (*addr_exp != '\0') |
c5aa993b | 2435 | { |
f9418c0f AC |
2436 | char *start; |
2437 | const char *end; | |
c906108c | 2438 | |
529480d0 KS |
2439 | /* Skip leading white space. */ |
2440 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2441 | |
f9418c0f AC |
2442 | /* Discard any leading ``$''. Check that there is something |
2443 | resembling a register following it. */ | |
2444 | if (addr_exp[0] == '$') | |
2445 | addr_exp++; | |
2446 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2447 | error (_("Missing register name")); |
c906108c | 2448 | |
f9418c0f AC |
2449 | /* Find the start/end of this register name/num/group. */ |
2450 | start = addr_exp; | |
2451 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2452 | addr_exp++; | |
2453 | end = addr_exp; | |
ad842144 | 2454 | |
f9418c0f AC |
2455 | /* Figure out what we've found and display it. */ |
2456 | ||
2457 | /* A register name? */ | |
2458 | { | |
029a67e4 | 2459 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2460 | |
f9418c0f AC |
2461 | if (regnum >= 0) |
2462 | { | |
ad842144 MR |
2463 | /* User registers lie completely outside of the range of |
2464 | normal registers. Catch them early so that the target | |
2465 | never sees them. */ | |
2466 | if (regnum >= gdbarch_num_regs (gdbarch) | |
2467 | + gdbarch_num_pseudo_regs (gdbarch)) | |
2468 | { | |
1292279a PA |
2469 | struct value *regval = value_of_user_reg (regnum, frame); |
2470 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2471 | regnum); | |
2472 | ||
2473 | /* Print in the same fashion | |
2474 | gdbarch_print_registers_info's default | |
2475 | implementation prints. */ | |
2476 | default_print_one_register_info (gdb_stdout, | |
2477 | regname, | |
2478 | regval); | |
ad842144 MR |
2479 | } |
2480 | else | |
2481 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2482 | frame, regnum, fpregs); | |
f9418c0f AC |
2483 | continue; |
2484 | } | |
2485 | } | |
ad842144 | 2486 | |
f9418c0f AC |
2487 | /* A register group? */ |
2488 | { | |
6c7d17ba | 2489 | struct reggroup *group; |
abbb1732 | 2490 | |
a4bd449d | 2491 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2492 | group != NULL; |
a4bd449d | 2493 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2494 | { |
2495 | /* Don't bother with a length check. Should the user | |
2496 | enter a short register group name, go with the first | |
2497 | group that matches. */ | |
6c7d17ba | 2498 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2499 | break; |
2500 | } | |
6c7d17ba | 2501 | if (group != NULL) |
f9418c0f AC |
2502 | { |
2503 | int regnum; | |
abbb1732 | 2504 | |
f57d151a | 2505 | for (regnum = 0; |
a4bd449d UW |
2506 | regnum < gdbarch_num_regs (gdbarch) |
2507 | + gdbarch_num_pseudo_regs (gdbarch); | |
f57d151a | 2508 | regnum++) |
f9418c0f | 2509 | { |
a4bd449d UW |
2510 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2511 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2512 | gdb_stdout, frame, |
f9418c0f AC |
2513 | regnum, fpregs); |
2514 | } | |
2515 | continue; | |
2516 | } | |
2517 | } | |
c906108c | 2518 | |
f9418c0f | 2519 | /* Nothing matched. */ |
8a3fe4f8 | 2520 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2521 | } |
c906108c SS |
2522 | } |
2523 | ||
1dd5fedc | 2524 | static void |
fba45db2 | 2525 | all_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
2526 | { |
2527 | registers_info (addr_exp, 1); | |
2528 | } | |
2529 | ||
a58dd373 | 2530 | static void |
fba45db2 | 2531 | nofp_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
2532 | { |
2533 | registers_info (addr_exp, 0); | |
2534 | } | |
e76f1f2e AC |
2535 | |
2536 | static void | |
d80b854b | 2537 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2538 | struct frame_info *frame, const char *args) |
2539 | { | |
d80b854b UW |
2540 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2541 | ||
e76f1f2e AC |
2542 | if (gdbarch_print_vector_info_p (gdbarch)) |
2543 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2544 | else | |
2545 | { | |
2546 | int regnum; | |
2547 | int printed_something = 0; | |
ab4327e0 | 2548 | |
f57d151a | 2549 | for (regnum = 0; |
a4bd449d UW |
2550 | regnum < gdbarch_num_regs (gdbarch) |
2551 | + gdbarch_num_pseudo_regs (gdbarch); | |
f57d151a | 2552 | regnum++) |
e76f1f2e | 2553 | { |
f9418c0f | 2554 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2555 | { |
2556 | printed_something = 1; | |
e76f1f2e | 2557 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2558 | } |
2559 | } | |
2560 | if (!printed_something) | |
2561 | fprintf_filtered (file, "No vector information\n"); | |
2562 | } | |
2563 | } | |
2564 | ||
2565 | static void | |
2566 | vector_info (char *args, int from_tty) | |
2567 | { | |
206415a3 DJ |
2568 | if (!target_has_registers) |
2569 | error (_("The program has no registers now.")); | |
2570 | ||
d80b854b | 2571 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2572 | } |
c906108c | 2573 | \f |
5fd62852 PA |
2574 | /* Kill the inferior process. Make us have no inferior. */ |
2575 | ||
2576 | static void | |
2577 | kill_command (char *arg, int from_tty) | |
2578 | { | |
2579 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2580 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2581 | some targets don't have processes! */ |
5fd62852 PA |
2582 | |
2583 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2584 | error (_("The program is not being run.")); | |
2585 | if (!query (_("Kill the program being debugged? "))) | |
2586 | error (_("Not confirmed.")); | |
2587 | target_kill (); | |
2588 | ||
c35b1492 PA |
2589 | /* If we still have other inferiors to debug, then don't mess with |
2590 | with their threads. */ | |
2591 | if (!have_inferiors ()) | |
5fd62852 | 2592 | { |
1777feb0 | 2593 | init_thread_list (); /* Destroy thread info. */ |
5fd62852 PA |
2594 | |
2595 | /* Killing off the inferior can leave us with a core file. If | |
2596 | so, print the state we are left in. */ | |
2597 | if (target_has_stack) | |
2598 | { | |
2599 | printf_filtered (_("In %s,\n"), target_longname); | |
08d72866 | 2600 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
5fd62852 PA |
2601 | } |
2602 | } | |
2603 | bfd_cache_close_all (); | |
2604 | } | |
c5aa993b | 2605 | |
74531fed PA |
2606 | /* Used in `attach&' command. ARG is a point to an integer |
2607 | representing a process id. Proceed threads of this process iff | |
2608 | they stopped due to debugger request, and when they did, they | |
a493e3e2 | 2609 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads |
74531fed PA |
2610 | that have been explicitly been told to stop. */ |
2611 | ||
2612 | static int | |
2613 | proceed_after_attach_callback (struct thread_info *thread, | |
2614 | void *arg) | |
2615 | { | |
2616 | int pid = * (int *) arg; | |
2617 | ||
2618 | if (ptid_get_pid (thread->ptid) == pid | |
2619 | && !is_exited (thread->ptid) | |
2620 | && !is_executing (thread->ptid) | |
2621 | && !thread->stop_requested | |
a493e3e2 | 2622 | && thread->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed PA |
2623 | { |
2624 | switch_to_thread (thread->ptid); | |
70509625 | 2625 | clear_proceed_status (0); |
64ce06e4 | 2626 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2627 | } |
2628 | ||
2629 | return 0; | |
2630 | } | |
2631 | ||
2632 | static void | |
2633 | proceed_after_attach (int pid) | |
2634 | { | |
2635 | /* Don't error out if the current thread is running, because | |
2636 | there may be other stopped threads. */ | |
2637 | struct cleanup *old_chain; | |
2638 | ||
2639 | /* Backup current thread and selected frame. */ | |
2640 | old_chain = make_cleanup_restore_current_thread (); | |
2641 | ||
2642 | iterate_over_threads (proceed_after_attach_callback, &pid); | |
2643 | ||
2644 | /* Restore selected ptid. */ | |
2645 | do_cleanups (old_chain); | |
2646 | } | |
2647 | ||
6efcd9a8 | 2648 | /* See inferior.h. */ |
c906108c | 2649 | |
6efcd9a8 PA |
2650 | void |
2651 | setup_inferior (int from_tty) | |
9356cf8d | 2652 | { |
d6b48e9c | 2653 | struct inferior *inferior; |
9356cf8d | 2654 | |
d6b48e9c | 2655 | inferior = current_inferior (); |
6efcd9a8 | 2656 | inferior->needs_setup = 0; |
9356cf8d PA |
2657 | |
2658 | /* If no exec file is yet known, try to determine it from the | |
2659 | process itself. */ | |
a10de604 GB |
2660 | if (get_exec_file (0) == NULL) |
2661 | exec_file_locate_attach (ptid_get_pid (inferior_ptid), from_tty); | |
9356cf8d PA |
2662 | else |
2663 | { | |
2664 | reopen_exec_file (); | |
2665 | reread_symbols (); | |
2666 | } | |
2667 | ||
2668 | /* Take any necessary post-attaching actions for this platform. */ | |
dfd4cc63 | 2669 | target_post_attach (ptid_get_pid (inferior_ptid)); |
9356cf8d PA |
2670 | |
2671 | post_create_inferior (¤t_target, from_tty); | |
6efcd9a8 PA |
2672 | } |
2673 | ||
2674 | /* What to do after the first program stops after attaching. */ | |
2675 | enum attach_post_wait_mode | |
2676 | { | |
2677 | /* Do nothing. Leaves threads as they are. */ | |
2678 | ATTACH_POST_WAIT_NOTHING, | |
2679 | ||
2680 | /* Re-resume threads that are marked running. */ | |
2681 | ATTACH_POST_WAIT_RESUME, | |
2682 | ||
2683 | /* Stop all threads. */ | |
2684 | ATTACH_POST_WAIT_STOP, | |
2685 | }; | |
2686 | ||
2687 | /* Called after we've attached to a process and we've seen it stop for | |
2688 | the first time. If ASYNC_EXEC is true, re-resume threads that | |
2689 | should be running. Else if ATTACH, */ | |
2690 | ||
2691 | static void | |
2692 | attach_post_wait (char *args, int from_tty, enum attach_post_wait_mode mode) | |
2693 | { | |
2694 | struct inferior *inferior; | |
9356cf8d | 2695 | |
6efcd9a8 PA |
2696 | inferior = current_inferior (); |
2697 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2698 | ||
2699 | if (inferior->needs_setup) | |
2700 | setup_inferior (from_tty); | |
2701 | ||
2702 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2703 | { |
2704 | /* The user requested an `attach&', so be sure to leave threads | |
2705 | that didn't get a signal running. */ | |
2706 | ||
2707 | /* Immediatelly resume all suspended threads of this inferior, | |
2708 | and this inferior only. This should have no effect on | |
2709 | already running threads. If a thread has been stopped with a | |
2710 | signal, leave it be. */ | |
2711 | if (non_stop) | |
2712 | proceed_after_attach (inferior->pid); | |
2713 | else | |
2714 | { | |
a493e3e2 | 2715 | if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed | 2716 | { |
70509625 | 2717 | clear_proceed_status (0); |
64ce06e4 | 2718 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2719 | } |
2720 | } | |
2721 | } | |
6efcd9a8 | 2722 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2723 | { |
74531fed PA |
2724 | /* The user requested a plain `attach', so be sure to leave |
2725 | the inferior stopped. */ | |
2726 | ||
74531fed PA |
2727 | /* At least the current thread is already stopped. */ |
2728 | ||
2729 | /* In all-stop, by definition, all threads have to be already | |
2730 | stopped at this point. In non-stop, however, although the | |
2731 | selected thread is stopped, others may still be executing. | |
2732 | Be sure to explicitly stop all threads of the process. This | |
2733 | should have no effect on already stopped threads. */ | |
066f6b6e | 2734 | if (non_stop) |
74531fed | 2735 | target_stop (pid_to_ptid (inferior->pid)); |
066f6b6e PA |
2736 | else if (target_is_non_stop_p ()) |
2737 | { | |
2738 | struct thread_info *thread; | |
2739 | struct thread_info *lowest = inferior_thread (); | |
2740 | int pid = current_inferior ()->pid; | |
2741 | ||
2742 | stop_all_threads (); | |
2743 | ||
2744 | /* It's not defined which thread will report the attach | |
2745 | stop. For consistency, always select the thread with | |
2746 | lowest GDB number, which should be the main thread, if it | |
2747 | still exists. */ | |
2748 | ALL_NON_EXITED_THREADS (thread) | |
2749 | { | |
2750 | if (ptid_get_pid (thread->ptid) == pid) | |
2751 | { | |
5d5658a1 PA |
2752 | if (thread->inf->num < lowest->inf->num |
2753 | || thread->per_inf_num < lowest->per_inf_num) | |
066f6b6e PA |
2754 | lowest = thread; |
2755 | } | |
2756 | } | |
2757 | ||
2758 | switch_to_thread (lowest->ptid); | |
2759 | } | |
74531fed PA |
2760 | |
2761 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2762 | normal_stop (); |
2763 | if (deprecated_attach_hook) | |
2764 | deprecated_attach_hook (); | |
2765 | } | |
2766 | } | |
2767 | ||
bfec99b2 | 2768 | struct attach_command_continuation_args |
9356cf8d PA |
2769 | { |
2770 | char *args; | |
2771 | int from_tty; | |
6efcd9a8 | 2772 | enum attach_post_wait_mode mode; |
bfec99b2 | 2773 | }; |
9356cf8d | 2774 | |
bfec99b2 | 2775 | static void |
fa4cd53f | 2776 | attach_command_continuation (void *args, int err) |
bfec99b2 | 2777 | { |
9a3c8263 SM |
2778 | struct attach_command_continuation_args *a |
2779 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2780 | |
fa4cd53f PA |
2781 | if (err) |
2782 | return; | |
2783 | ||
6efcd9a8 | 2784 | attach_post_wait (a->args, a->from_tty, a->mode); |
9356cf8d PA |
2785 | } |
2786 | ||
604ead4a PA |
2787 | static void |
2788 | attach_command_continuation_free_args (void *args) | |
2789 | { | |
9a3c8263 SM |
2790 | struct attach_command_continuation_args *a |
2791 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2792 | |
604ead4a PA |
2793 | xfree (a->args); |
2794 | xfree (a); | |
2795 | } | |
2796 | ||
6efcd9a8 PA |
2797 | /* "attach" command entry point. Takes a program started up outside |
2798 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2799 | and allows us to start debugging it. */ | |
2800 | ||
c906108c | 2801 | void |
fba45db2 | 2802 | attach_command (char *args, int from_tty) |
c906108c | 2803 | { |
6c4486e6 PA |
2804 | int async_exec; |
2805 | struct cleanup *args_chain; | |
b3ccfe11 | 2806 | struct target_ops *attach_target; |
6efcd9a8 PA |
2807 | struct inferior *inferior = current_inferior (); |
2808 | enum attach_post_wait_mode mode; | |
c906108c | 2809 | |
c5aa993b | 2810 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2811 | |
f5656ead | 2812 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2813 | /* Don't complain if all processes share the same symbol |
2814 | space. */ | |
8a305172 PA |
2815 | ; |
2816 | else if (target_has_execution) | |
c906108c | 2817 | { |
9e2f0ad4 | 2818 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2819 | target_kill (); |
2820 | else | |
8a3fe4f8 | 2821 | error (_("Not killed.")); |
c906108c SS |
2822 | } |
2823 | ||
fd79ecee DJ |
2824 | /* Clean up any leftovers from other runs. Some other things from |
2825 | this function should probably be moved into target_pre_inferior. */ | |
2826 | target_pre_inferior (from_tty); | |
2827 | ||
6c4486e6 PA |
2828 | args = strip_bg_char (args, &async_exec); |
2829 | args_chain = make_cleanup (xfree, args); | |
8bc2fe48 | 2830 | |
b3ccfe11 TT |
2831 | attach_target = find_attach_target (); |
2832 | ||
8bc2fe48 PA |
2833 | prepare_execution_command (attach_target, async_exec); |
2834 | ||
b3ccfe11 | 2835 | if (non_stop && !attach_target->to_supports_non_stop (attach_target)) |
9908b566 VP |
2836 | error (_("Cannot attach to this target in non-stop mode")); |
2837 | ||
b3ccfe11 TT |
2838 | attach_target->to_attach (attach_target, args, from_tty); |
2839 | /* to_attach should push the target, so after this point we | |
2840 | shouldn't refer to attach_target again. */ | |
2841 | attach_target = NULL; | |
c906108c SS |
2842 | |
2843 | /* Set up the "saved terminal modes" of the inferior | |
2844 | based on what modes we are starting it with. */ | |
2845 | target_terminal_init (); | |
2846 | ||
7180e04a PA |
2847 | /* Install inferior's terminal modes. This may look like a no-op, |
2848 | as we've just saved them above, however, this does more than | |
2849 | restore terminal settings: | |
2850 | ||
2851 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2852 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2853 | stop would end up as a spurious Quit. | |
2854 | ||
2855 | - removes stdin from the event loop, which we need if attaching | |
2856 | in the foreground, otherwise on targets that report an initial | |
2857 | stop on attach (which are most) we'd process input/commands | |
2858 | while we're in the event loop waiting for that stop. That is, | |
2859 | before the attach continuation runs and the command is really | |
2860 | finished. */ | |
2861 | target_terminal_inferior (); | |
2862 | ||
c906108c SS |
2863 | /* Set up execution context to know that we should return from |
2864 | wait_for_inferior as soon as the target reports a stop. */ | |
2865 | init_wait_for_inferior (); | |
70509625 | 2866 | clear_proceed_status (0); |
c906108c | 2867 | |
6efcd9a8 PA |
2868 | inferior->needs_setup = 1; |
2869 | ||
fbea99ea | 2870 | if (target_is_non_stop_p ()) |
74531fed PA |
2871 | { |
2872 | /* If we find that the current thread isn't stopped, explicitly | |
2873 | do so now, because we're going to install breakpoints and | |
2874 | poke at memory. */ | |
2875 | ||
2876 | if (async_exec) | |
2877 | /* The user requested an `attach&'; stop just one thread. */ | |
2878 | target_stop (inferior_ptid); | |
2879 | else | |
2880 | /* The user requested an `attach', so stop all threads of this | |
2881 | inferior. */ | |
2882 | target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid))); | |
2883 | } | |
2884 | ||
6efcd9a8 PA |
2885 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2886 | ||
dc177b7a PA |
2887 | /* Some system don't generate traps when attaching to inferior. |
2888 | E.g. Mach 3 or GNU hurd. */ | |
2889 | if (!target_attach_no_wait) | |
c5aa993b | 2890 | { |
0b333c5e | 2891 | struct attach_command_continuation_args *a; |
d6b48e9c | 2892 | |
1777feb0 | 2893 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2894 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2895 | need a way for handle_inferior_event to reset the stop_signal | |
2896 | variable after an attach, and this is what | |
2897 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2898 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2899 | |
3b12939d | 2900 | /* Wait for stop. */ |
0b333c5e PA |
2901 | a = XNEW (struct attach_command_continuation_args); |
2902 | a->args = xstrdup (args); | |
2903 | a->from_tty = from_tty; | |
6efcd9a8 | 2904 | a->mode = mode; |
0b333c5e PA |
2905 | add_inferior_continuation (attach_command_continuation, a, |
2906 | attach_command_continuation_free_args); | |
2907 | /* Done with ARGS. */ | |
2908 | do_cleanups (args_chain); | |
2909 | ||
2910 | if (!target_is_async_p ()) | |
2911 | mark_infrun_async_event_handler (); | |
2912 | return; | |
dc177b7a | 2913 | } |
6426a772 | 2914 | |
978b9495 JK |
2915 | /* Done with ARGS. */ |
2916 | do_cleanups (args_chain); | |
2917 | ||
6efcd9a8 | 2918 | attach_post_wait (args, from_tty, mode); |
c906108c SS |
2919 | } |
2920 | ||
1941c569 PA |
2921 | /* We had just found out that the target was already attached to an |
2922 | inferior. PTID points at a thread of this new inferior, that is | |
2923 | the most likely to be stopped right now, but not necessarily so. | |
2924 | The new inferior is assumed to be already added to the inferior | |
2925 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2926 | this inferior running, except those we've explicitly seen reported | |
2927 | as stopped. */ | |
2928 | ||
2929 | void | |
2930 | notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) | |
2931 | { | |
2932 | struct cleanup* old_chain; | |
6efcd9a8 | 2933 | enum attach_post_wait_mode mode; |
1941c569 PA |
2934 | |
2935 | old_chain = make_cleanup (null_cleanup, NULL); | |
2936 | ||
0d5b594f | 2937 | mode = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; |
1941c569 PA |
2938 | |
2939 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2940 | make_cleanup_restore_current_thread (); | |
2941 | ||
6efcd9a8 PA |
2942 | /* Avoid reading registers -- we haven't fetched the target |
2943 | description yet. */ | |
2944 | switch_to_thread_no_regs (find_thread_ptid (ptid)); | |
1941c569 PA |
2945 | |
2946 | /* When we "notice" a new inferior we need to do all the things we | |
2947 | would normally do if we had just attached to it. */ | |
2948 | ||
2949 | if (is_executing (inferior_ptid)) | |
2950 | { | |
0b333c5e | 2951 | struct attach_command_continuation_args *a; |
1941c569 PA |
2952 | struct inferior *inferior = current_inferior (); |
2953 | ||
2954 | /* We're going to install breakpoints, and poke at memory, | |
2955 | ensure that the inferior is stopped for a moment while we do | |
2956 | that. */ | |
2957 | target_stop (inferior_ptid); | |
2958 | ||
16c381f0 | 2959 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2960 | |
2961 | /* Wait for stop before proceeding. */ | |
0b333c5e PA |
2962 | a = XNEW (struct attach_command_continuation_args); |
2963 | a->args = xstrdup (""); | |
2964 | a->from_tty = from_tty; | |
6efcd9a8 | 2965 | a->mode = mode; |
0b333c5e PA |
2966 | add_inferior_continuation (attach_command_continuation, a, |
2967 | attach_command_continuation_free_args); | |
1941c569 | 2968 | |
0b333c5e PA |
2969 | do_cleanups (old_chain); |
2970 | return; | |
1941c569 PA |
2971 | } |
2972 | ||
6efcd9a8 | 2973 | attach_post_wait ("" /* args */, from_tty, mode); |
1941c569 PA |
2974 | |
2975 | do_cleanups (old_chain); | |
2976 | } | |
2977 | ||
c906108c SS |
2978 | /* |
2979 | * detach_command -- | |
2980 | * takes a program previously attached to and detaches it. | |
2981 | * The program resumes execution and will no longer stop | |
2982 | * on signals, etc. We better not have left any breakpoints | |
2983 | * in the program or it'll die when it hits one. For this | |
2984 | * to work, it may be necessary for the process to have been | |
2985 | * previously attached. It *might* work if the program was | |
2986 | * started via the normal ptrace (PTRACE_TRACEME). | |
2987 | */ | |
2988 | ||
6418d433 | 2989 | void |
fba45db2 | 2990 | detach_command (char *args, int from_tty) |
c906108c | 2991 | { |
1f5d0fc9 | 2992 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a PA |
2993 | |
2994 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2995 | error (_("The program is not being run.")); | |
2996 | ||
2f9d54cf PA |
2997 | query_if_trace_running (from_tty); |
2998 | ||
2999 | disconnect_tracing (); | |
d5551862 | 3000 | |
c906108c | 3001 | target_detach (args, from_tty); |
50c71eaf PA |
3002 | |
3003 | /* If the solist is global across inferiors, don't clear it when we | |
3004 | detach from a single inferior. */ | |
f5656ead | 3005 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 3006 | no_shared_libraries (NULL, from_tty); |
8a305172 | 3007 | |
c35b1492 PA |
3008 | /* If we still have inferiors to debug, then don't mess with their |
3009 | threads. */ | |
3010 | if (!have_inferiors ()) | |
8a305172 PA |
3011 | init_thread_list (); |
3012 | ||
9a4105ab AC |
3013 | if (deprecated_detach_hook) |
3014 | deprecated_detach_hook (); | |
c906108c SS |
3015 | } |
3016 | ||
6ad8ae5c DJ |
3017 | /* Disconnect from the current target without resuming it (leaving it |
3018 | waiting for a debugger). | |
3019 | ||
3020 | We'd better not have left any breakpoints in the program or the | |
3021 | next debugger will get confused. Currently only supported for some | |
3022 | remote targets, since the normal attach mechanisms don't work on | |
3023 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
3024 | ||
3025 | static void | |
3026 | disconnect_command (char *args, int from_tty) | |
3027 | { | |
1777feb0 | 3028 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
3029 | query_if_trace_running (from_tty); |
3030 | disconnect_tracing (); | |
6ad8ae5c | 3031 | target_disconnect (args, from_tty); |
e85a822c | 3032 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 3033 | init_thread_list (); |
9a4105ab AC |
3034 | if (deprecated_detach_hook) |
3035 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
3036 | } |
3037 | ||
77ebaa5a VP |
3038 | void |
3039 | interrupt_target_1 (int all_threads) | |
3040 | { | |
3041 | ptid_t ptid; | |
abbb1732 | 3042 | |
77ebaa5a VP |
3043 | if (all_threads) |
3044 | ptid = minus_one_ptid; | |
3045 | else | |
3046 | ptid = inferior_ptid; | |
e42de8c7 PA |
3047 | |
3048 | if (non_stop) | |
3049 | target_stop (ptid); | |
3050 | else | |
3051 | target_interrupt (ptid); | |
252fbfc8 PA |
3052 | |
3053 | /* Tag the thread as having been explicitly requested to stop, so | |
3054 | other parts of gdb know not to resume this thread automatically, | |
3055 | if it was stopped due to an internal event. Limit this to | |
3056 | non-stop mode, as when debugging a multi-threaded application in | |
3057 | all-stop mode, we will only get one stop event --- it's undefined | |
3058 | which thread will report the event. */ | |
3059 | if (non_stop) | |
3060 | set_stop_requested (ptid, 1); | |
77ebaa5a VP |
3061 | } |
3062 | ||
6339bfc4 DE |
3063 | /* interrupt [-a] |
3064 | Stop the execution of the target while running in async mode, in | |
8cae4b3f PA |
3065 | the backgound. In all-stop, stop the whole process. In non-stop |
3066 | mode, stop the current thread only by default, or stop all threads | |
3067 | if the `-a' switch is used. */ | |
3068 | ||
1dd5fedc | 3069 | static void |
0a07590b | 3070 | interrupt_command (char *args, int from_tty) |
43ff13b4 | 3071 | { |
362646f5 | 3072 | if (target_can_async_p ()) |
43ff13b4 | 3073 | { |
8cae4b3f PA |
3074 | int all_threads = 0; |
3075 | ||
1777feb0 | 3076 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 3077 | |
8cae4b3f | 3078 | if (args != NULL |
61012eef | 3079 | && startswith (args, "-a")) |
8cae4b3f PA |
3080 | all_threads = 1; |
3081 | ||
3082 | if (!non_stop && all_threads) | |
3083 | error (_("-a is meaningless in all-stop mode.")); | |
3084 | ||
77ebaa5a | 3085 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
3086 | } |
3087 | } | |
3088 | ||
cc86d1cb YQ |
3089 | /* See inferior.h. */ |
3090 | ||
3091 | void | |
3092 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
3093 | struct frame_info *frame, const char *args) | |
c906108c | 3094 | { |
cc86d1cb YQ |
3095 | int regnum; |
3096 | int printed_something = 0; | |
d80b854b | 3097 | |
cc86d1cb YQ |
3098 | for (regnum = 0; |
3099 | regnum < gdbarch_num_regs (gdbarch) | |
3100 | + gdbarch_num_pseudo_regs (gdbarch); | |
3101 | regnum++) | |
23e3a7ac | 3102 | { |
cc86d1cb | 3103 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 3104 | { |
cc86d1cb YQ |
3105 | printed_something = 1; |
3106 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 3107 | } |
23e3a7ac | 3108 | } |
cc86d1cb YQ |
3109 | if (!printed_something) |
3110 | fprintf_filtered (file, "No floating-point info " | |
3111 | "available for this processor.\n"); | |
23e3a7ac AC |
3112 | } |
3113 | ||
3114 | static void | |
3115 | float_info (char *args, int from_tty) | |
3116 | { | |
cc86d1cb YQ |
3117 | struct frame_info *frame; |
3118 | ||
206415a3 DJ |
3119 | if (!target_has_registers) |
3120 | error (_("The program has no registers now.")); | |
3121 | ||
cc86d1cb YQ |
3122 | frame = get_selected_frame (NULL); |
3123 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
3124 | } |
3125 | \f | |
c906108c | 3126 | static void |
fba45db2 | 3127 | unset_command (char *args, int from_tty) |
c906108c | 3128 | { |
3e43a32a MS |
3129 | printf_filtered (_("\"unset\" must be followed by the " |
3130 | "name of an unset subcommand.\n")); | |
635c7e8a | 3131 | help_list (unsetlist, "unset ", all_commands, gdb_stdout); |
c906108c SS |
3132 | } |
3133 | ||
145b16a9 UW |
3134 | /* Implement `info proc' family of commands. */ |
3135 | ||
3136 | static void | |
3137 | info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty) | |
3138 | { | |
3030c96e UW |
3139 | struct gdbarch *gdbarch = get_current_arch (); |
3140 | ||
451b7c33 TT |
3141 | if (!target_info_proc (args, what)) |
3142 | { | |
3143 | if (gdbarch_info_proc_p (gdbarch)) | |
3144 | gdbarch_info_proc (gdbarch, args, what); | |
3145 | else | |
3146 | error (_("Not supported on this target.")); | |
3147 | } | |
145b16a9 UW |
3148 | } |
3149 | ||
3150 | /* Implement `info proc' when given without any futher parameters. */ | |
3151 | ||
3152 | static void | |
3153 | info_proc_cmd (char *args, int from_tty) | |
3154 | { | |
3155 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
3156 | } | |
3157 | ||
3158 | /* Implement `info proc mappings'. */ | |
3159 | ||
3160 | static void | |
3161 | info_proc_cmd_mappings (char *args, int from_tty) | |
3162 | { | |
3163 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
3164 | } | |
3165 | ||
3166 | /* Implement `info proc stat'. */ | |
3167 | ||
3168 | static void | |
3169 | info_proc_cmd_stat (char *args, int from_tty) | |
3170 | { | |
3171 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
3172 | } | |
3173 | ||
3174 | /* Implement `info proc status'. */ | |
3175 | ||
3176 | static void | |
3177 | info_proc_cmd_status (char *args, int from_tty) | |
3178 | { | |
3179 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
3180 | } | |
3181 | ||
3182 | /* Implement `info proc cwd'. */ | |
3183 | ||
3184 | static void | |
3185 | info_proc_cmd_cwd (char *args, int from_tty) | |
3186 | { | |
3187 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
3188 | } | |
3189 | ||
3190 | /* Implement `info proc cmdline'. */ | |
3191 | ||
3192 | static void | |
3193 | info_proc_cmd_cmdline (char *args, int from_tty) | |
3194 | { | |
3195 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
3196 | } | |
3197 | ||
3198 | /* Implement `info proc exe'. */ | |
3199 | ||
3200 | static void | |
3201 | info_proc_cmd_exe (char *args, int from_tty) | |
3202 | { | |
3203 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
3204 | } | |
3205 | ||
3206 | /* Implement `info proc all'. */ | |
3207 | ||
3208 | static void | |
3209 | info_proc_cmd_all (char *args, int from_tty) | |
3210 | { | |
3211 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
3212 | } | |
3213 | ||
c906108c | 3214 | void |
fba45db2 | 3215 | _initialize_infcmd (void) |
c906108c | 3216 | { |
145b16a9 | 3217 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3218 | struct cmd_list_element *c = NULL; |
6f937416 | 3219 | const char *cmd_name; |
3cb3b8df | 3220 | |
1777feb0 | 3221 | /* Add the filename of the terminal connected to inferior I/O. */ |
3cb3b8df | 3222 | add_setshow_filename_cmd ("inferior-tty", class_run, |
3f81c18a | 3223 | &inferior_io_terminal_scratch, _("\ |
3cb3b8df BR |
3224 | Set terminal for future runs of program being debugged."), _("\ |
3225 | Show terminal for future runs of program being debugged."), _("\ | |
3f81c18a VP |
3226 | Usage: set inferior-tty /dev/pts/1"), |
3227 | set_inferior_tty_command, | |
3228 | show_inferior_tty_command, | |
3229 | &setlist, &showlist); | |
3cb3b8df | 3230 | add_com_alias ("tty", "set inferior-tty", class_alias, 0); |
c906108c | 3231 | |
6ace3df1 YQ |
3232 | cmd_name = "args"; |
3233 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3234 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3235 | Set argument list to give program being debugged when it is started."), _("\ |
3236 | Show argument list to give program being debugged when it is started."), _("\ | |
3237 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3238 | set_args_command, |
3239 | show_args_command, | |
3240 | &setlist, &showlist); | |
3241 | c = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
3242 | gdb_assert (c != NULL); | |
3243 | set_cmd_completer (c, filename_completer); | |
c906108c | 3244 | |
1a966eab AC |
3245 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3246 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3247 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3248 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3249 | environment to be given to the program."), &showlist); |
5ba2abeb | 3250 | set_cmd_completer (c, noop_completer); |
c906108c SS |
3251 | |
3252 | add_prefix_cmd ("unset", no_class, unset_command, | |
1bedd215 | 3253 | _("Complement to certain \"set\" commands."), |
c906108c | 3254 | &unsetlist, "unset ", 0, &cmdlist); |
c5aa993b | 3255 | |
1a966eab AC |
3256 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3257 | Cancel environment variable VAR for the program.\n\ | |
3258 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3259 | &unsetlist); |
5ba2abeb | 3260 | set_cmd_completer (c, noop_completer); |
c906108c | 3261 | |
1a966eab AC |
3262 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3263 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3264 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3265 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3266 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3267 | &setlist); |
5ba2abeb | 3268 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3269 | |
1bedd215 AC |
3270 | c = add_com ("path", class_files, path_command, _("\ |
3271 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3272 | $cwd in the path means the current working directory.\n\ |
3273 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3274 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3275 | fully linked executable files and separately compiled object files as \ |
3276 | needed.")); | |
5ba2abeb | 3277 | set_cmd_completer (c, filename_completer); |
c906108c | 3278 | |
1a966eab AC |
3279 | c = add_cmd ("paths", no_class, path_info, _("\ |
3280 | Current search path for finding object files.\n\ | |
c906108c SS |
3281 | $cwd in the path means the current working directory.\n\ |
3282 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3283 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3284 | fully linked executable files and separately compiled object files as \ |
3285 | needed."), | |
c906108c | 3286 | &showlist); |
5ba2abeb | 3287 | set_cmd_completer (c, noop_completer); |
c906108c | 3288 | |
2277426b PA |
3289 | add_prefix_cmd ("kill", class_run, kill_command, |
3290 | _("Kill execution of program being debugged."), | |
3291 | &killlist, "kill ", 0, &cmdlist); | |
5fd62852 | 3292 | |
1bedd215 AC |
3293 | add_com ("attach", class_run, attach_command, _("\ |
3294 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3295 | This command attaches to another target, of the same type as your last\n\ |
3296 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3297 | The command may take as argument a process id or a device file.\n\ | |
3298 | For a process id, you must have permission to send the process a signal,\n\ | |
3299 | and it must have the same effective uid as the debugger.\n\ | |
3300 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3301 | program running in the process, looking first in the current working\n\ | |
3302 | directory, or (if not found there) using the source file search path\n\ | |
3303 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3304 | to specify the program, and to load its symbol table.")); |
c906108c | 3305 | |
f73adfeb | 3306 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3307 | Detach a process or file previously attached.\n\ |
c906108c | 3308 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb AS |
3309 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
3310 | &detachlist, "detach ", 0, &cmdlist); | |
c906108c | 3311 | |
1bedd215 AC |
3312 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3313 | Disconnect from a target.\n\ | |
6ad8ae5c | 3314 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3315 | all targets.")); |
6ad8ae5c | 3316 | |
de0bea00 | 3317 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3318 | Continue program with the specified signal.\n\ |
3319 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3320 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3321 | \n\ |
3322 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3323 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3324 | and you want to resume the program while discarding the signal.\n\ |
3325 | \n\ | |
3326 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3327 | the current thread only.")); | |
3328 | set_cmd_completer (c, signal_completer); | |
3329 | ||
3330 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3331 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3332 | Usage: queue-signal SIGNAL\n\ | |
3333 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3334 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3335 | \n\ | |
3336 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3337 | the current thread. This is useful in cases where the program stopped\n\ | |
3338 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3339 | \n\ | |
3340 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3341 | the current thread only.")); | |
de0bea00 | 3342 | set_cmd_completer (c, signal_completer); |
c906108c | 3343 | |
1bedd215 AC |
3344 | add_com ("stepi", class_run, stepi_command, _("\ |
3345 | Step one instruction exactly.\n\ | |
486c7739 MF |
3346 | Usage: stepi [N]\n\ |
3347 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3348 | reason).")); |
c906108c SS |
3349 | add_com_alias ("si", "stepi", class_alias, 0); |
3350 | ||
1bedd215 AC |
3351 | add_com ("nexti", class_run, nexti_command, _("\ |
3352 | Step one instruction, but proceed through subroutine calls.\n\ | |
486c7739 MF |
3353 | Usage: nexti [N]\n\ |
3354 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3355 | reason).")); |
c906108c SS |
3356 | add_com_alias ("ni", "nexti", class_alias, 0); |
3357 | ||
1bedd215 AC |
3358 | add_com ("finish", class_run, finish_command, _("\ |
3359 | Execute until selected stack frame returns.\n\ | |
486c7739 | 3360 | Usage: finish\n\ |
1bedd215 | 3361 | Upon return, the value returned is printed and put in the value history.")); |
0e479716 | 3362 | add_com_alias ("fin", "finish", class_run, 1); |
c906108c | 3363 | |
1bedd215 AC |
3364 | add_com ("next", class_run, next_command, _("\ |
3365 | Step program, proceeding through subroutine calls.\n\ | |
486c7739 MF |
3366 | Usage: next [N]\n\ |
3367 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3368 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3369 | the call, in effect treating it as a single source line.")); |
c906108c | 3370 | add_com_alias ("n", "next", class_run, 1); |
c906108c | 3371 | |
1bedd215 AC |
3372 | add_com ("step", class_run, step_command, _("\ |
3373 | Step program until it reaches a different source line.\n\ | |
486c7739 MF |
3374 | Usage: step [N]\n\ |
3375 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3376 | reason).")); |
c906108c SS |
3377 | add_com_alias ("s", "step", class_run, 1); |
3378 | ||
1bedd215 AC |
3379 | c = add_com ("until", class_run, until_command, _("\ |
3380 | Execute until the program reaches a source line greater than the current\n\ | |
3e43a32a MS |
3381 | or a specified location (same args as break command) within the current \ |
3382 | frame.")); | |
5ba2abeb | 3383 | set_cmd_completer (c, location_completer); |
c906108c | 3384 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 3385 | |
1bedd215 | 3386 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3387 | Continue the program up to the given location (same form as args for break \ |
3388 | command).\n\ | |
1bedd215 | 3389 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3390 | set_cmd_completer (c, location_completer); |
3391 | ||
1bedd215 AC |
3392 | c = add_com ("jump", class_run, jump_command, _("\ |
3393 | Continue program being debugged at specified line or address.\n\ | |
486c7739 | 3394 | Usage: jump <location>\n\ |
c906108c | 3395 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3396 | for an address to start at.")); |
5ba2abeb | 3397 | set_cmd_completer (c, location_completer); |
c1d780c2 | 3398 | add_com_alias ("j", "jump", class_run, 1); |
c906108c | 3399 | |
df983543 | 3400 | add_com ("continue", class_run, continue_command, _("\ |
1bedd215 | 3401 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3402 | Usage: continue [N]\n\ |
c906108c SS |
3403 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3404 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3405 | the breakpoint won't break until the Nth time it is reached).\n\ |
3406 | \n\ | |
3407 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3408 | otherwise all the threads in the program are continued. To \n\ | |
3409 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3410 | Specifying -a and an ignore count simultaneously is an error.")); | |
c906108c SS |
3411 | add_com_alias ("c", "cont", class_run, 1); |
3412 | add_com_alias ("fg", "cont", class_run, 1); | |
3413 | ||
1bedd215 AC |
3414 | c = add_com ("run", class_run, run_command, _("\ |
3415 | Start debugged program. You may specify arguments to give it.\n\ | |
c906108c | 3416 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ |
3e43a32a MS |
3417 | Input and output redirection with \">\", \"<\", or \">>\" are also \ |
3418 | allowed.\n\n\ | |
3419 | With no arguments, uses arguments last specified (with \"run\" \ | |
3420 | or \"set args\").\n\ | |
c906108c | 3421 | To cancel previous arguments and run with no arguments,\n\ |
1bedd215 | 3422 | use \"set args\" without arguments.")); |
5ba2abeb | 3423 | set_cmd_completer (c, filename_completer); |
c906108c | 3424 | add_com_alias ("r", "run", class_run, 1); |
c906108c | 3425 | |
1bedd215 | 3426 | c = add_com ("start", class_run, start_command, _("\ |
a4d5f2e0 JB |
3427 | Run the debugged program until the beginning of the main procedure.\n\ |
3428 | You may specify arguments to give to your program, just as with the\n\ | |
1bedd215 | 3429 | \"run\" command.")); |
a4d5f2e0 JB |
3430 | set_cmd_completer (c, filename_completer); |
3431 | ||
0a07590b | 3432 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3433 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3434 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3435 | otherwise all the threads in the program are stopped. To \n\ | |
3436 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3437 | |
71c24708 | 3438 | c = add_info ("registers", nofp_registers_info, _("\ |
1bedd215 AC |
3439 | List of integer registers and their contents, for selected stack frame.\n\ |
3440 | Register name as argument means describe only that register.")); | |
7194c49b | 3441 | add_info_alias ("r", "registers", 1); |
71c24708 | 3442 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3443 | |
71c24708 | 3444 | c = add_info ("all-registers", all_registers_info, _("\ |
1bedd215 AC |
3445 | List of all registers and their contents, for selected stack frame.\n\ |
3446 | Register name as argument means describe only that register.")); | |
71c24708 | 3447 | set_cmd_completer (c, reg_or_group_completer); |
c906108c SS |
3448 | |
3449 | add_info ("program", program_info, | |
1bedd215 | 3450 | _("Execution status of the program.")); |
c906108c SS |
3451 | |
3452 | add_info ("float", float_info, | |
1bedd215 | 3453 | _("Print the status of the floating point unit\n")); |
c906108c | 3454 | |
e76f1f2e | 3455 | add_info ("vector", vector_info, |
1bedd215 | 3456 | _("Print the status of the vector unit\n")); |
145b16a9 UW |
3457 | |
3458 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3459 | _("\ | |
3460 | Show /proc process information about any running process.\n\ | |
3461 | Specify any process id, or use the program being debugged by default."), | |
3462 | &info_proc_cmdlist, "info proc ", | |
3463 | 1/*allow-unknown*/, &infolist); | |
3464 | ||
3465 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
3466 | List of mapped memory regions."), | |
3467 | &info_proc_cmdlist); | |
3468 | ||
3469 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3470 | List process info from /proc/PID/stat."), | |
3471 | &info_proc_cmdlist); | |
3472 | ||
3473 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3474 | List process info from /proc/PID/status."), | |
3475 | &info_proc_cmdlist); | |
3476 | ||
3477 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
3478 | List current working directory of the process."), | |
3479 | &info_proc_cmdlist); | |
3480 | ||
3481 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
3482 | List command line arguments of the process."), | |
3483 | &info_proc_cmdlist); | |
3484 | ||
3485 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
3486 | List absolute filename for executable of the process."), | |
3487 | &info_proc_cmdlist); | |
3488 | ||
3489 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ | |
3490 | List all available /proc info."), | |
3491 | &info_proc_cmdlist); | |
c906108c | 3492 | } |