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" |
8980e177 | 60 | #include "interps.h" |
d5551862 | 61 | |
a58dd373 EZ |
62 | /* Local functions: */ |
63 | ||
64 | static void nofp_registers_info (char *, int); | |
65 | ||
a14ed312 | 66 | static void until_next_command (int); |
c906108c | 67 | |
a14ed312 | 68 | static void until_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void path_info (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void path_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void unset_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void float_info (char *, int); |
c906108c | 77 | |
6ad8ae5c DJ |
78 | static void disconnect_command (char *, int); |
79 | ||
a14ed312 | 80 | static void unset_environment_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void set_environment_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void environment_info (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void program_info (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void finish_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void signal_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void jump_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | static void step_1 (int, int, char *); |
c906108c | 95 | |
a14ed312 | 96 | static void next_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void step_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void run_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | void _initialize_infcmd (void); |
c906108c | 103 | |
c906108c | 104 | #define ERROR_NO_INFERIOR \ |
8a3fe4f8 | 105 | if (!target_has_execution) error (_("The program is not being run.")); |
c906108c | 106 | |
3e43a32a MS |
107 | /* Scratch area where string containing arguments to give to the |
108 | program will be stored by 'set args'. As soon as anything is | |
109 | stored, notice_args_set will move it into per-inferior storage. | |
1777feb0 | 110 | Arguments are separated by spaces. Empty string (pointer to '\0') |
3e43a32a | 111 | means no args. */ |
c906108c | 112 | |
3f81c18a | 113 | static char *inferior_args_scratch; |
c906108c | 114 | |
3f81c18a VP |
115 | /* Scratch area where 'set inferior-tty' will store user-provided value. |
116 | We'll immediate copy it into per-inferior storage. */ | |
552c04a7 | 117 | |
3f81c18a | 118 | static char *inferior_io_terminal_scratch; |
c906108c SS |
119 | |
120 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
121 | Since various parts of infrun.c test this to see whether there is a program | |
122 | being debugged it should be nonzero (currently 3 is used) for remote | |
123 | debugging. */ | |
124 | ||
39f77062 | 125 | ptid_t inferior_ptid; |
c906108c | 126 | |
c906108c SS |
127 | /* Address at which inferior stopped. */ |
128 | ||
129 | CORE_ADDR stop_pc; | |
130 | ||
c906108c SS |
131 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
132 | ||
aa7d318d | 133 | enum stop_stack_kind stop_stack_dummy; |
c906108c SS |
134 | |
135 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
136 | process. */ | |
137 | ||
138 | int stopped_by_random_signal; | |
139 | ||
98882a26 PA |
140 | /* See inferior.h. */ |
141 | ||
142 | int startup_with_shell = 1; | |
143 | ||
c906108c | 144 | \f |
1777feb0 | 145 | /* Accessor routines. */ |
07091751 | 146 | |
3f81c18a VP |
147 | /* Set the io terminal for the current inferior. Ownership of |
148 | TERMINAL_NAME is not transferred. */ | |
149 | ||
3cb3b8df BR |
150 | void |
151 | set_inferior_io_terminal (const char *terminal_name) | |
152 | { | |
3f81c18a VP |
153 | xfree (current_inferior ()->terminal); |
154 | current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0; | |
3cb3b8df BR |
155 | } |
156 | ||
157 | const char * | |
158 | get_inferior_io_terminal (void) | |
159 | { | |
3f81c18a VP |
160 | return current_inferior ()->terminal; |
161 | } | |
162 | ||
163 | static void | |
164 | set_inferior_tty_command (char *args, int from_tty, | |
165 | struct cmd_list_element *c) | |
166 | { | |
167 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
168 | Now route it to current inferior. */ | |
169 | set_inferior_io_terminal (inferior_io_terminal_scratch); | |
170 | } | |
171 | ||
172 | static void | |
173 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
174 | struct cmd_list_element *c, const char *value) | |
175 | { | |
176 | /* Note that we ignore the passed-in value in favor of computing it | |
177 | directly. */ | |
275f2e57 | 178 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
abbb1732 | 179 | |
275f2e57 DJ |
180 | if (inferior_io_terminal == NULL) |
181 | inferior_io_terminal = ""; | |
3f81c18a | 182 | fprintf_filtered (gdb_stdout, |
275f2e57 DJ |
183 | _("Terminal for future runs of program being debugged " |
184 | "is \"%s\".\n"), inferior_io_terminal); | |
3cb3b8df BR |
185 | } |
186 | ||
07091751 FN |
187 | char * |
188 | get_inferior_args (void) | |
189 | { | |
3f81c18a | 190 | if (current_inferior ()->argc != 0) |
552c04a7 | 191 | { |
3f81c18a | 192 | char *n; |
552c04a7 | 193 | |
3f81c18a VP |
194 | n = construct_inferior_arguments (current_inferior ()->argc, |
195 | current_inferior ()->argv); | |
196 | set_inferior_args (n); | |
197 | xfree (n); | |
552c04a7 TT |
198 | } |
199 | ||
3f81c18a VP |
200 | if (current_inferior ()->args == NULL) |
201 | current_inferior ()->args = xstrdup (""); | |
552c04a7 | 202 | |
3f81c18a | 203 | return current_inferior ()->args; |
07091751 FN |
204 | } |
205 | ||
3f81c18a VP |
206 | /* Set the arguments for the current inferior. Ownership of |
207 | NEWARGS is not transferred. */ | |
208 | ||
209 | void | |
07091751 FN |
210 | set_inferior_args (char *newargs) |
211 | { | |
3f81c18a VP |
212 | xfree (current_inferior ()->args); |
213 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; | |
214 | current_inferior ()->argc = 0; | |
215 | current_inferior ()->argv = 0; | |
07091751 | 216 | } |
c5aa993b | 217 | |
552c04a7 TT |
218 | void |
219 | set_inferior_args_vector (int argc, char **argv) | |
220 | { | |
3f81c18a VP |
221 | current_inferior ()->argc = argc; |
222 | current_inferior ()->argv = argv; | |
552c04a7 TT |
223 | } |
224 | ||
225 | /* Notice when `set args' is run. */ | |
6339bfc4 | 226 | |
552c04a7 | 227 | static void |
3f81c18a | 228 | set_args_command (char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 229 | { |
3f81c18a VP |
230 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
231 | Now route it to current inferior. */ | |
232 | set_inferior_args (inferior_args_scratch); | |
552c04a7 TT |
233 | } |
234 | ||
235 | /* Notice when `show args' is run. */ | |
6339bfc4 | 236 | |
552c04a7 | 237 | static void |
3f81c18a VP |
238 | show_args_command (struct ui_file *file, int from_tty, |
239 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 240 | { |
258c00cc TT |
241 | /* Note that we ignore the passed-in value in favor of computing it |
242 | directly. */ | |
243 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
552c04a7 TT |
244 | } |
245 | ||
c2a727fa TT |
246 | \f |
247 | /* Compute command-line string given argument vector. This does the | |
248 | same shell processing as fork_inferior. */ | |
6339bfc4 | 249 | |
c2a727fa | 250 | char * |
bd57a748 | 251 | construct_inferior_arguments (int argc, char **argv) |
c2a727fa TT |
252 | { |
253 | char *result; | |
254 | ||
98882a26 | 255 | if (startup_with_shell) |
c2a727fa | 256 | { |
5d60742e EZ |
257 | #ifdef __MINGW32__ |
258 | /* This holds all the characters considered special to the | |
259 | Windows shells. */ | |
260 | char *special = "\"!&*|[]{}<>?`~^=;, \t\n"; | |
261 | const char quote = '"'; | |
262 | #else | |
c2a727fa TT |
263 | /* This holds all the characters considered special to the |
264 | typical Unix shells. We include `^' because the SunOS | |
265 | /bin/sh treats it as a synonym for `|'. */ | |
5d60742e EZ |
266 | char *special = "\"!#$&*()\\|[]{}<>?'`~^; \t\n"; |
267 | const char quote = '\''; | |
268 | #endif | |
c2a727fa TT |
269 | int i; |
270 | int length = 0; | |
271 | char *out, *cp; | |
272 | ||
273 | /* We over-compute the size. It shouldn't matter. */ | |
274 | for (i = 0; i < argc; ++i) | |
c2226152 | 275 | length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0'); |
c2a727fa TT |
276 | |
277 | result = (char *) xmalloc (length); | |
278 | out = result; | |
279 | ||
280 | for (i = 0; i < argc; ++i) | |
281 | { | |
282 | if (i > 0) | |
283 | *out++ = ' '; | |
284 | ||
03c6228e AS |
285 | /* Need to handle empty arguments specially. */ |
286 | if (argv[i][0] == '\0') | |
c2a727fa | 287 | { |
5d60742e EZ |
288 | *out++ = quote; |
289 | *out++ = quote; | |
03c6228e AS |
290 | } |
291 | else | |
292 | { | |
5d60742e EZ |
293 | #ifdef __MINGW32__ |
294 | int quoted = 0; | |
295 | ||
296 | if (strpbrk (argv[i], special)) | |
297 | { | |
298 | quoted = 1; | |
299 | *out++ = quote; | |
300 | } | |
301 | #endif | |
03c6228e AS |
302 | for (cp = argv[i]; *cp; ++cp) |
303 | { | |
c2226152 AS |
304 | if (*cp == '\n') |
305 | { | |
306 | /* A newline cannot be quoted with a backslash (it | |
307 | just disappears), only by putting it inside | |
308 | quotes. */ | |
5d60742e | 309 | *out++ = quote; |
c2226152 | 310 | *out++ = '\n'; |
5d60742e | 311 | *out++ = quote; |
c2226152 AS |
312 | } |
313 | else | |
314 | { | |
5d60742e EZ |
315 | #ifdef __MINGW32__ |
316 | if (*cp == quote) | |
317 | #else | |
c2226152 | 318 | if (strchr (special, *cp) != NULL) |
5d60742e | 319 | #endif |
c2226152 AS |
320 | *out++ = '\\'; |
321 | *out++ = *cp; | |
322 | } | |
03c6228e | 323 | } |
5d60742e EZ |
324 | #ifdef __MINGW32__ |
325 | if (quoted) | |
326 | *out++ = quote; | |
327 | #endif | |
c2a727fa TT |
328 | } |
329 | } | |
330 | *out = '\0'; | |
331 | } | |
332 | else | |
333 | { | |
334 | /* In this case we can't handle arguments that contain spaces, | |
335 | tabs, or newlines -- see breakup_args(). */ | |
336 | int i; | |
337 | int length = 0; | |
338 | ||
339 | for (i = 0; i < argc; ++i) | |
340 | { | |
341 | char *cp = strchr (argv[i], ' '); | |
342 | if (cp == NULL) | |
343 | cp = strchr (argv[i], '\t'); | |
344 | if (cp == NULL) | |
345 | cp = strchr (argv[i], '\n'); | |
346 | if (cp != NULL) | |
3e43a32a MS |
347 | error (_("can't handle command-line " |
348 | "argument containing whitespace")); | |
c2a727fa TT |
349 | length += strlen (argv[i]) + 1; |
350 | } | |
351 | ||
352 | result = (char *) xmalloc (length); | |
353 | result[0] = '\0'; | |
354 | for (i = 0; i < argc; ++i) | |
355 | { | |
356 | if (i > 0) | |
357 | strcat (result, " "); | |
358 | strcat (result, argv[i]); | |
359 | } | |
360 | } | |
361 | ||
362 | return result; | |
363 | } | |
552c04a7 TT |
364 | \f |
365 | ||
6c4486e6 PA |
366 | /* This function strips the '&' character (indicating background |
367 | execution) that is added as *the last* of the arguments ARGS of a | |
368 | command. A copy of the incoming ARGS without the '&' is returned, | |
369 | unless the resulting string after stripping is empty, in which case | |
370 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
371 | whether the '&' character was found. */ | |
6339bfc4 | 372 | |
6c4486e6 PA |
373 | static char * |
374 | strip_bg_char (const char *args, int *bg_char_p) | |
43ff13b4 | 375 | { |
6c4486e6 | 376 | const char *p; |
c5aa993b | 377 | |
6c4486e6 PA |
378 | if (args == NULL || *args == '\0') |
379 | { | |
380 | *bg_char_p = 0; | |
381 | return NULL; | |
382 | } | |
c5aa993b | 383 | |
6c4486e6 PA |
384 | p = args + strlen (args); |
385 | if (p[-1] == '&') | |
43ff13b4 | 386 | { |
6c4486e6 PA |
387 | p--; |
388 | while (p > args && isspace (p[-1])) | |
389 | p--; | |
390 | ||
391 | *bg_char_p = 1; | |
392 | if (p != args) | |
393 | return savestring (args, p - args); | |
394 | else | |
395 | return NULL; | |
43ff13b4 | 396 | } |
6c4486e6 PA |
397 | |
398 | *bg_char_p = 0; | |
399 | return xstrdup (args); | |
43ff13b4 JM |
400 | } |
401 | ||
281b533b DJ |
402 | /* Common actions to take after creating any sort of inferior, by any |
403 | means (running, attaching, connecting, et cetera). The target | |
404 | should be stopped. */ | |
405 | ||
406 | void | |
407 | post_create_inferior (struct target_ops *target, int from_tty) | |
408 | { | |
ce406537 | 409 | |
b79599ff | 410 | /* Be sure we own the terminal in case write operations are performed. */ |
f8e3ef9d | 411 | target_terminal_ours_for_output (); |
b79599ff | 412 | |
424163ea DJ |
413 | /* If the target hasn't taken care of this already, do it now. |
414 | Targets which need to access registers during to_open, | |
415 | to_create_inferior, or to_attach should do it earlier; but many | |
416 | don't need to. */ | |
417 | target_find_description (); | |
418 | ||
ce406537 PA |
419 | /* Now that we know the register layout, retrieve current PC. But |
420 | if the PC is unavailable (e.g., we're opening a core file with | |
421 | missing registers info), ignore it. */ | |
422 | stop_pc = 0; | |
492d29ea | 423 | TRY |
ce406537 PA |
424 | { |
425 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
426 | } | |
492d29ea | 427 | CATCH (ex, RETURN_MASK_ERROR) |
7556d4a4 PA |
428 | { |
429 | if (ex.error != NOT_AVAILABLE_ERROR) | |
430 | throw_exception (ex); | |
431 | } | |
492d29ea | 432 | END_CATCH |
f698437e | 433 | |
50c71eaf PA |
434 | if (exec_bfd) |
435 | { | |
2eff07b3 PP |
436 | const unsigned solib_add_generation |
437 | = current_program_space->solib_add_generation; | |
438 | ||
9353355f DJ |
439 | /* Create the hooks to handle shared library load and unload |
440 | events. */ | |
268a4a75 | 441 | solib_create_inferior_hook (from_tty); |
268a4a75 | 442 | |
2eff07b3 PP |
443 | if (current_program_space->solib_add_generation == solib_add_generation) |
444 | { | |
445 | /* The platform-specific hook should load initial shared libraries, | |
446 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
447 | targets should be fixed anyway. Call it only after the solib | |
448 | target has been initialized by solib_create_inferior_hook. */ | |
449 | ||
450 | if (info_verbose) | |
451 | warning (_("platform-specific solib_create_inferior_hook did " | |
452 | "not load initial shared libraries.")); | |
453 | ||
454 | /* If the solist is global across processes, there's no need to | |
455 | refetch it here. */ | |
f5656ead | 456 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
4d1eb6b4 | 457 | solib_add (NULL, 0, target, auto_solib_add); |
2eff07b3 | 458 | } |
9353355f DJ |
459 | } |
460 | ||
ea5d7a99 PM |
461 | /* If the user sets watchpoints before execution having started, |
462 | then she gets software watchpoints, because GDB can't know which | |
463 | target will end up being pushed, or if it supports hardware | |
464 | watchpoints or not. breakpoint_re_set takes care of promoting | |
465 | watchpoints to hardware watchpoints if possible, however, if this | |
466 | new inferior doesn't load shared libraries or we don't pull in | |
467 | symbols from any other source on this target/arch, | |
468 | breakpoint_re_set is never called. Call it now so that software | |
469 | watchpoints get a chance to be promoted to hardware watchpoints | |
470 | if the now pushed target supports hardware watchpoints. */ | |
471 | breakpoint_re_set (); | |
472 | ||
281b533b DJ |
473 | observer_notify_inferior_created (target, from_tty); |
474 | } | |
475 | ||
a4d5f2e0 JB |
476 | /* Kill the inferior if already running. This function is designed |
477 | to be called when we are about to start the execution of the program | |
478 | from the beginning. Ask the user to confirm that he wants to restart | |
479 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 480 | |
8edfe269 | 481 | static void |
a4d5f2e0 JB |
482 | kill_if_already_running (int from_tty) |
483 | { | |
39f77062 | 484 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
c906108c | 485 | { |
8edfe269 DJ |
486 | /* Bail out before killing the program if we will not be able to |
487 | restart it. */ | |
488 | target_require_runnable (); | |
489 | ||
adf40b2e | 490 | if (from_tty |
9e2f0ad4 HZ |
491 | && !query (_("The program being debugged has been started already.\n\ |
492 | Start it from the beginning? "))) | |
8a3fe4f8 | 493 | error (_("Program not restarted.")); |
c906108c | 494 | target_kill (); |
c906108c | 495 | } |
a4d5f2e0 JB |
496 | } |
497 | ||
329ea579 | 498 | /* See inferior.h. */ |
8bc2fe48 | 499 | |
329ea579 | 500 | void |
8bc2fe48 PA |
501 | prepare_execution_command (struct target_ops *target, int background) |
502 | { | |
503 | /* If we get a request for running in the bg but the target | |
504 | doesn't support it, error out. */ | |
505 | if (background && !target->to_can_async_p (target)) | |
506 | error (_("Asynchronous execution not supported on this target.")); | |
507 | ||
0b333c5e | 508 | if (!background) |
8bc2fe48 | 509 | { |
0b333c5e PA |
510 | /* If we get a request for running in the fg, then we need to |
511 | simulate synchronous (fg) execution. Note no cleanup is | |
512 | necessary for this. stdin is re-enabled whenever an error | |
513 | reaches the top level. */ | |
a8836c93 | 514 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
515 | } |
516 | } | |
517 | ||
1777feb0 | 518 | /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert |
f67a969f JB |
519 | a temporary breakpoint at the begining of the main program before |
520 | running the program. */ | |
521 | ||
a4d5f2e0 | 522 | static void |
f67a969f | 523 | run_command_1 (char *args, int from_tty, int tbreak_at_main) |
a4d5f2e0 JB |
524 | { |
525 | char *exec_file; | |
29f49a6a PA |
526 | struct cleanup *old_chain; |
527 | ptid_t ptid; | |
79a45e25 | 528 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 529 | struct target_ops *run_target; |
6c4486e6 PA |
530 | int async_exec; |
531 | struct cleanup *args_chain; | |
c906108c | 532 | |
a4d5f2e0 JB |
533 | dont_repeat (); |
534 | ||
535 | kill_if_already_running (from_tty); | |
3c35e65b UW |
536 | |
537 | init_wait_for_inferior (); | |
c906108c SS |
538 | clear_breakpoint_hit_counts (); |
539 | ||
fd79ecee DJ |
540 | /* Clean up any leftovers from other runs. Some other things from |
541 | this function should probably be moved into target_pre_inferior. */ | |
542 | target_pre_inferior (from_tty); | |
543 | ||
39ad761d JB |
544 | /* The comment here used to read, "The exec file is re-read every |
545 | time we do a generic_mourn_inferior, so we just have to worry | |
546 | about the symbol file." The `generic_mourn_inferior' function | |
547 | gets called whenever the program exits. However, suppose the | |
548 | program exits, and *then* the executable file changes? We need | |
549 | to check again here. Since reopen_exec_file doesn't do anything | |
550 | if the timestamp hasn't changed, I don't see the harm. */ | |
551 | reopen_exec_file (); | |
c906108c SS |
552 | reread_symbols (); |
553 | ||
6c4486e6 PA |
554 | args = strip_bg_char (args, &async_exec); |
555 | args_chain = make_cleanup (xfree, args); | |
f67a969f | 556 | |
8bc2fe48 PA |
557 | /* Do validation and preparation before possibly changing anything |
558 | in the inferior. */ | |
39ad761d | 559 | |
b3ccfe11 TT |
560 | run_target = find_run_target (); |
561 | ||
8bc2fe48 PA |
562 | prepare_execution_command (run_target, async_exec); |
563 | ||
b3ccfe11 | 564 | if (non_stop && !run_target->to_supports_non_stop (run_target)) |
9908b566 VP |
565 | error (_("The target does not support running in non-stop mode.")); |
566 | ||
8bc2fe48 PA |
567 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
568 | ||
569 | /* Insert the temporary breakpoint if a location was specified. */ | |
570 | if (tbreak_at_main) | |
571 | tbreak_command (main_name (), 0); | |
572 | ||
573 | exec_file = (char *) get_exec_file (0); | |
574 | ||
c906108c SS |
575 | /* We keep symbols from add-symbol-file, on the grounds that the |
576 | user might want to add some symbols before running the program | |
577 | (right?). But sometimes (dynamic loading where the user manually | |
578 | introduces the new symbols with add-symbol-file), the code which | |
579 | the symbols describe does not persist between runs. Currently | |
580 | the user has to manually nuke all symbols between runs if they | |
581 | want them to go away (PR 2207). This is probably reasonable. */ | |
582 | ||
8bc2fe48 PA |
583 | /* If there were other args, beside '&', process them. */ |
584 | if (args != NULL) | |
585 | set_inferior_args (args); | |
c906108c SS |
586 | |
587 | if (from_tty) | |
588 | { | |
8b93c638 JM |
589 | ui_out_field_string (uiout, NULL, "Starting program"); |
590 | ui_out_text (uiout, ": "); | |
591 | if (exec_file) | |
592 | ui_out_field_string (uiout, "execfile", exec_file); | |
593 | ui_out_spaces (uiout, 1); | |
552c04a7 TT |
594 | /* We call get_inferior_args() because we might need to compute |
595 | the value now. */ | |
596 | ui_out_field_string (uiout, "infargs", get_inferior_args ()); | |
8b93c638 JM |
597 | ui_out_text (uiout, "\n"); |
598 | ui_out_flush (uiout); | |
c906108c SS |
599 | } |
600 | ||
6c4486e6 PA |
601 | /* Done with ARGS. */ |
602 | do_cleanups (args_chain); | |
603 | ||
552c04a7 TT |
604 | /* We call get_inferior_args() because we might need to compute |
605 | the value now. */ | |
b3ccfe11 TT |
606 | run_target->to_create_inferior (run_target, exec_file, get_inferior_args (), |
607 | environ_vector (current_inferior ()->environment), | |
608 | from_tty); | |
609 | /* to_create_inferior should push the target, so after this point we | |
610 | shouldn't refer to run_target again. */ | |
611 | run_target = NULL; | |
281b533b | 612 | |
29f49a6a PA |
613 | /* We're starting off a new process. When we get out of here, in |
614 | non-stop mode, finish the state of all threads of that process, | |
615 | but leave other threads alone, as they may be stopped in internal | |
616 | events --- the frontend shouldn't see them as stopped. In | |
617 | all-stop, always finish the state of all threads, as we may be | |
618 | resuming more than just the new process. */ | |
619 | if (non_stop) | |
620 | ptid = pid_to_ptid (ptid_get_pid (inferior_ptid)); | |
621 | else | |
622 | ptid = minus_one_ptid; | |
623 | old_chain = make_cleanup (finish_thread_state_cleanup, &ptid); | |
624 | ||
de1b3c3d PA |
625 | /* Pass zero for FROM_TTY, because at this point the "run" command |
626 | has done its thing; now we are setting up the running program. */ | |
627 | post_create_inferior (¤t_target, 0); | |
281b533b | 628 | |
74d1f91e JK |
629 | /* Start the target running. Do not use -1 continuation as it would skip |
630 | breakpoint right at the entry point. */ | |
64ce06e4 | 631 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 632 | |
29f49a6a PA |
633 | /* Since there was no error, there's no need to finish the thread |
634 | states here. */ | |
635 | discard_cleanups (old_chain); | |
636 | } | |
c906108c | 637 | |
f67a969f JB |
638 | static void |
639 | run_command (char *args, int from_tty) | |
640 | { | |
641 | run_command_1 (args, from_tty, 0); | |
642 | } | |
643 | ||
a4d5f2e0 JB |
644 | /* Start the execution of the program up until the beginning of the main |
645 | program. */ | |
646 | ||
647 | static void | |
648 | start_command (char *args, int from_tty) | |
649 | { | |
650 | /* Some languages such as Ada need to search inside the program | |
651 | minimal symbols for the location where to put the temporary | |
652 | breakpoint before starting. */ | |
653 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 654 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 655 | |
f67a969f JB |
656 | /* Run the program until reaching the main procedure... */ |
657 | run_command_1 (args, from_tty, 1); | |
a4d5f2e0 JB |
658 | } |
659 | ||
8cae4b3f PA |
660 | static int |
661 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
662 | { | |
74531fed PA |
663 | /* We go through all threads individually instead of compressing |
664 | into a single target `resume_all' request, because some threads | |
665 | may be stopped in internal breakpoints/events, or stopped waiting | |
666 | for its turn in the displaced stepping queue (that is, they are | |
667 | running && !executing). The target side has no idea about why | |
668 | the thread is stopped, so a `resume_all' command would resume too | |
669 | much. If/when GDB gains a way to tell the target `hold this | |
670 | thread stopped until I say otherwise', then we can optimize | |
671 | this. */ | |
4f8d22e3 | 672 | if (!is_stopped (thread->ptid)) |
8cae4b3f PA |
673 | return 0; |
674 | ||
dcf4fbde | 675 | switch_to_thread (thread->ptid); |
70509625 | 676 | clear_proceed_status (0); |
64ce06e4 | 677 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
678 | return 0; |
679 | } | |
680 | ||
70221824 | 681 | static void |
d729566a PA |
682 | ensure_valid_thread (void) |
683 | { | |
684 | if (ptid_equal (inferior_ptid, null_ptid) | |
685 | || is_exited (inferior_ptid)) | |
3e43a32a | 686 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
687 | } |
688 | ||
573cda03 | 689 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 690 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
691 | disallow those commands. */ |
692 | ||
70221824 | 693 | static void |
573cda03 SS |
694 | ensure_not_tfind_mode (void) |
695 | { | |
696 | if (get_traceframe_number () >= 0) | |
3e43a32a | 697 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
698 | } |
699 | ||
3d3fef6b YQ |
700 | /* Throw an error indicating the current thread is running. */ |
701 | ||
702 | static void | |
703 | error_is_running (void) | |
704 | { | |
705 | error (_("Cannot execute this command while " | |
706 | "the selected thread is running.")); | |
707 | } | |
708 | ||
709 | /* Calls error_is_running if the current thread is running. */ | |
710 | ||
711 | static void | |
712 | ensure_not_running (void) | |
713 | { | |
714 | if (is_running (inferior_ptid)) | |
715 | error_is_running (); | |
716 | } | |
717 | ||
77ebaa5a VP |
718 | void |
719 | continue_1 (int all_threads) | |
720 | { | |
3d488bfc | 721 | ERROR_NO_INFERIOR; |
573cda03 | 722 | ensure_not_tfind_mode (); |
3d488bfc | 723 | |
77ebaa5a VP |
724 | if (non_stop && all_threads) |
725 | { | |
726 | /* Don't error out if the current thread is running, because | |
abbb1732 | 727 | there may be other stopped threads. */ |
77ebaa5a VP |
728 | struct cleanup *old_chain; |
729 | ||
730 | /* Backup current thread and selected frame. */ | |
731 | old_chain = make_cleanup_restore_current_thread (); | |
732 | ||
733 | iterate_over_threads (proceed_thread_callback, NULL); | |
734 | ||
3b12939d | 735 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
736 | { |
737 | /* If all threads in the target were already running, | |
738 | proceed_thread_callback ends up never calling proceed, | |
739 | and so nothing calls this to put the inferior's terminal | |
740 | settings in effect and remove stdin from the event loop, | |
741 | which we must when running a foreground command. E.g.: | |
742 | ||
743 | (gdb) c -a& | |
744 | Continuing. | |
745 | <all threads are running now> | |
746 | (gdb) c -a | |
747 | Continuing. | |
748 | <no thread was resumed, but the inferior now owns the terminal> | |
749 | */ | |
750 | target_terminal_inferior (); | |
751 | } | |
752 | ||
77ebaa5a VP |
753 | /* Restore selected ptid. */ |
754 | do_cleanups (old_chain); | |
755 | } | |
756 | else | |
757 | { | |
d729566a | 758 | ensure_valid_thread (); |
77ebaa5a | 759 | ensure_not_running (); |
70509625 | 760 | clear_proceed_status (0); |
64ce06e4 | 761 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
762 | } |
763 | } | |
764 | ||
8cae4b3f | 765 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 766 | |
1dd5fedc | 767 | static void |
8cae4b3f | 768 | continue_command (char *args, int from_tty) |
c906108c | 769 | { |
6c4486e6 | 770 | int async_exec; |
8cae4b3f | 771 | int all_threads = 0; |
6c4486e6 PA |
772 | struct cleanup *args_chain; |
773 | ||
c906108c SS |
774 | ERROR_NO_INFERIOR; |
775 | ||
1777feb0 | 776 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
777 | args = strip_bg_char (args, &async_exec); |
778 | args_chain = make_cleanup (xfree, args); | |
43ff13b4 | 779 | |
8cae4b3f PA |
780 | if (args != NULL) |
781 | { | |
61012eef | 782 | if (startswith (args, "-a")) |
8cae4b3f PA |
783 | { |
784 | all_threads = 1; | |
785 | args += sizeof ("-a") - 1; | |
786 | if (*args == '\0') | |
787 | args = NULL; | |
788 | } | |
789 | } | |
790 | ||
791 | if (!non_stop && all_threads) | |
792 | error (_("`-a' is meaningless in all-stop mode.")); | |
793 | ||
794 | if (args != NULL && all_threads) | |
3e43a32a MS |
795 | error (_("Can't resume all threads and specify " |
796 | "proceed count simultaneously.")); | |
8cae4b3f PA |
797 | |
798 | /* If we have an argument left, set proceed count of breakpoint we | |
799 | stopped at. */ | |
800 | if (args != NULL) | |
c906108c | 801 | { |
347bddb7 | 802 | bpstat bs = NULL; |
8671a17b PA |
803 | int num, stat; |
804 | int stopped = 0; | |
347bddb7 PA |
805 | struct thread_info *tp; |
806 | ||
807 | if (non_stop) | |
e09875d4 | 808 | tp = find_thread_ptid (inferior_ptid); |
347bddb7 PA |
809 | else |
810 | { | |
811 | ptid_t last_ptid; | |
812 | struct target_waitstatus ws; | |
813 | ||
814 | get_last_target_status (&last_ptid, &ws); | |
e09875d4 | 815 | tp = find_thread_ptid (last_ptid); |
347bddb7 PA |
816 | } |
817 | if (tp != NULL) | |
16c381f0 | 818 | bs = tp->control.stop_bpstat; |
8671a17b PA |
819 | |
820 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
821 | if (stat > 0) | |
822 | { | |
823 | set_ignore_count (num, | |
8cae4b3f | 824 | parse_and_eval_long (args) - 1, |
8671a17b PA |
825 | from_tty); |
826 | /* set_ignore_count prints a message ending with a period. | |
827 | So print two spaces before "Continuing.". */ | |
828 | if (from_tty) | |
829 | printf_filtered (" "); | |
830 | stopped = 1; | |
831 | } | |
832 | ||
833 | if (!stopped && from_tty) | |
c906108c SS |
834 | { |
835 | printf_filtered | |
836 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
837 | } | |
c906108c SS |
838 | } |
839 | ||
6c4486e6 PA |
840 | /* Done with ARGS. */ |
841 | do_cleanups (args_chain); | |
842 | ||
3b12939d PA |
843 | ERROR_NO_INFERIOR; |
844 | ensure_not_tfind_mode (); | |
845 | ||
846 | if (!non_stop || !all_threads) | |
847 | { | |
848 | ensure_valid_thread (); | |
849 | ensure_not_running (); | |
850 | } | |
851 | ||
852 | prepare_execution_command (¤t_target, async_exec); | |
853 | ||
c906108c | 854 | if (from_tty) |
a3f17187 | 855 | printf_filtered (_("Continuing.\n")); |
c906108c | 856 | |
77ebaa5a | 857 | continue_1 (all_threads); |
c906108c SS |
858 | } |
859 | \f | |
edb3359d DJ |
860 | /* Record the starting point of a "step" or "next" command. */ |
861 | ||
862 | static void | |
863 | set_step_frame (void) | |
864 | { | |
865 | struct symtab_and_line sal; | |
64ce06e4 PA |
866 | CORE_ADDR pc; |
867 | struct frame_info *frame = get_current_frame (); | |
868 | struct thread_info *tp = inferior_thread (); | |
edb3359d | 869 | |
64ce06e4 PA |
870 | find_frame_sal (frame, &sal); |
871 | set_step_info (frame, sal); | |
872 | pc = get_frame_pc (frame); | |
873 | tp->control.step_start_function = find_pc_function (pc); | |
edb3359d DJ |
874 | } |
875 | ||
c906108c SS |
876 | /* Step until outside of current statement. */ |
877 | ||
c906108c | 878 | static void |
fba45db2 | 879 | step_command (char *count_string, int from_tty) |
c906108c SS |
880 | { |
881 | step_1 (0, 0, count_string); | |
882 | } | |
883 | ||
884 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
885 | ||
c906108c | 886 | static void |
fba45db2 | 887 | next_command (char *count_string, int from_tty) |
c906108c SS |
888 | { |
889 | step_1 (1, 0, count_string); | |
890 | } | |
891 | ||
892 | /* Likewise, but step only one instruction. */ | |
893 | ||
1dd5fedc | 894 | static void |
fba45db2 | 895 | stepi_command (char *count_string, int from_tty) |
c906108c SS |
896 | { |
897 | step_1 (0, 1, count_string); | |
898 | } | |
899 | ||
1dd5fedc | 900 | static void |
fba45db2 | 901 | nexti_command (char *count_string, int from_tty) |
c906108c SS |
902 | { |
903 | step_1 (1, 1, count_string); | |
904 | } | |
905 | ||
186c406b | 906 | void |
611c83ae | 907 | delete_longjmp_breakpoint_cleanup (void *arg) |
74b7792f | 908 | { |
611c83ae PA |
909 | int thread = * (int *) arg; |
910 | delete_longjmp_breakpoint (thread); | |
74b7792f AC |
911 | } |
912 | ||
243a9253 PA |
913 | /* Data for the FSM that manages the step/next/stepi/nexti |
914 | commands. */ | |
915 | ||
916 | struct step_command_fsm | |
917 | { | |
918 | /* The base class. */ | |
919 | struct thread_fsm thread_fsm; | |
920 | ||
921 | /* How many steps left in a "step N"-like command. */ | |
922 | int count; | |
923 | ||
924 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
925 | int skip_subroutines; | |
926 | ||
927 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
928 | int single_inst; | |
243a9253 PA |
929 | }; |
930 | ||
8980e177 PA |
931 | static void step_command_fsm_clean_up (struct thread_fsm *self, |
932 | struct thread_info *thread); | |
933 | static int step_command_fsm_should_stop (struct thread_fsm *self, | |
934 | struct thread_info *thread); | |
243a9253 PA |
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 * | |
8980e177 | 952 | new_step_command_fsm (struct interp *cmd_interp) |
243a9253 PA |
953 | { |
954 | struct step_command_fsm *sm; | |
955 | ||
956 | sm = XCNEW (struct step_command_fsm); | |
8980e177 | 957 | thread_fsm_ctor (&sm->thread_fsm, &step_command_fsm_ops, cmd_interp); |
243a9253 PA |
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; | |
243a9253 PA |
973 | |
974 | /* Leave the si command alone. */ | |
975 | if (!sm->single_inst || sm->skip_subroutines) | |
976 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
977 | ||
978 | thread->control.stepping_command = 1; | |
979 | } | |
980 | ||
981 | static int prepare_one_step (struct step_command_fsm *sm); | |
982 | ||
c906108c | 983 | static void |
fba45db2 | 984 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
c906108c | 985 | { |
243a9253 | 986 | int count; |
6c4486e6 | 987 | int async_exec; |
6c4486e6 | 988 | struct cleanup *args_chain; |
243a9253 PA |
989 | struct thread_info *thr; |
990 | struct step_command_fsm *step_sm; | |
c5aa993b | 991 | |
c906108c | 992 | ERROR_NO_INFERIOR; |
573cda03 | 993 | ensure_not_tfind_mode (); |
d729566a | 994 | ensure_valid_thread (); |
94cc34af | 995 | ensure_not_running (); |
43ff13b4 | 996 | |
6c4486e6 PA |
997 | count_string = strip_bg_char (count_string, &async_exec); |
998 | args_chain = make_cleanup (xfree, count_string); | |
c5aa993b | 999 | |
8bc2fe48 | 1000 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1001 | |
bb518678 | 1002 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 1003 | |
6c4486e6 PA |
1004 | /* Done with ARGS. */ |
1005 | do_cleanups (args_chain); | |
1006 | ||
243a9253 | 1007 | clear_proceed_status (1); |
611c83ae | 1008 | |
243a9253 PA |
1009 | /* Setup the execution command state machine to handle all the COUNT |
1010 | steps. */ | |
1011 | thr = inferior_thread (); | |
8980e177 | 1012 | step_sm = new_step_command_fsm (command_interp ()); |
243a9253 | 1013 | thr->thread_fsm = &step_sm->thread_fsm; |
611c83ae | 1014 | |
243a9253 PA |
1015 | step_command_fsm_prepare (step_sm, skip_subroutines, |
1016 | single_inst, count, thr); | |
c2d11a7d | 1017 | |
0b333c5e PA |
1018 | /* Do only one step for now, before returning control to the event |
1019 | loop. Let the continuation figure out how many other steps we | |
1020 | need to do, and handle them one at the time, through | |
1021 | step_once. */ | |
243a9253 PA |
1022 | if (!prepare_one_step (step_sm)) |
1023 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
1024 | else | |
1025 | { | |
3b12939d PA |
1026 | int proceeded; |
1027 | ||
243a9253 PA |
1028 | /* Stepped into an inline frame. Pretend that we've |
1029 | stopped. */ | |
8980e177 | 1030 | thread_fsm_clean_up (thr->thread_fsm, thr); |
3b12939d PA |
1031 | proceeded = normal_stop (); |
1032 | if (!proceeded) | |
1033 | inferior_event_handler (INF_EXEC_COMPLETE, NULL); | |
1034 | all_uis_check_sync_execution_done (); | |
243a9253 | 1035 | } |
c2d11a7d | 1036 | } |
c906108c | 1037 | |
243a9253 PA |
1038 | /* Implementation of the 'should_stop' FSM method for stepping |
1039 | commands. Called after we are done with one step operation, to | |
1040 | check whether we need to step again, before we print the prompt and | |
1041 | return control to the user. If count is > 1, returns false, as we | |
1042 | will need to keep going. */ | |
6339bfc4 | 1043 | |
243a9253 | 1044 | static int |
8980e177 | 1045 | step_command_fsm_should_stop (struct thread_fsm *self, struct thread_info *tp) |
c2d11a7d | 1046 | { |
243a9253 | 1047 | struct step_command_fsm *sm = (struct step_command_fsm *) self; |
f13468d9 | 1048 | |
243a9253 | 1049 | if (tp->control.stop_step) |
f13468d9 | 1050 | { |
243a9253 PA |
1051 | /* There are more steps to make, and we did stop due to |
1052 | ending a stepping range. Do another step. */ | |
1053 | if (--sm->count > 0) | |
1054 | return prepare_one_step (sm); | |
af679fd0 | 1055 | |
243a9253 | 1056 | thread_fsm_set_finished (self); |
f107f563 | 1057 | } |
af679fd0 | 1058 | |
243a9253 | 1059 | return 1; |
c2d11a7d JM |
1060 | } |
1061 | ||
243a9253 | 1062 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 PA |
1063 | |
1064 | static void | |
8980e177 | 1065 | step_command_fsm_clean_up (struct thread_fsm *self, struct thread_info *thread) |
bfec99b2 | 1066 | { |
243a9253 PA |
1067 | struct step_command_fsm *sm = (struct step_command_fsm *) self; |
1068 | ||
1069 | if (!sm->single_inst || sm->skip_subroutines) | |
8980e177 | 1070 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 PA |
1071 | } |
1072 | ||
1073 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
1074 | commands. */ | |
1075 | ||
1076 | static enum async_reply_reason | |
1077 | step_command_fsm_async_reply_reason (struct thread_fsm *self) | |
1078 | { | |
1079 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1080 | } | |
1081 | ||
1082 | /* Prepare for one step in "step N". The actual target resumption is | |
1083 | done by the caller. Return true if we're done and should thus | |
1084 | report a stop to the user. Returns false if the target needs to be | |
1085 | resumed. */ | |
c2d11a7d | 1086 | |
243a9253 PA |
1087 | static int |
1088 | prepare_one_step (struct step_command_fsm *sm) | |
1089 | { | |
1090 | if (sm->count > 0) | |
c906108c | 1091 | { |
243a9253 PA |
1092 | struct frame_info *frame = get_current_frame (); |
1093 | ||
4e1c45ea PA |
1094 | /* Don't assume THREAD is a valid thread id. It is set to -1 if |
1095 | the longjmp breakpoint was not required. Use the | |
1096 | INFERIOR_PTID thread instead, which is the same thread when | |
1097 | THREAD is set. */ | |
1098 | struct thread_info *tp = inferior_thread (); | |
abbb1732 | 1099 | |
edb3359d | 1100 | set_step_frame (); |
c906108c | 1101 | |
243a9253 | 1102 | if (!sm->single_inst) |
c906108c | 1103 | { |
1641cfcc PA |
1104 | CORE_ADDR pc; |
1105 | ||
edb3359d | 1106 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 1107 | if (!sm->skip_subroutines |
edb3359d DJ |
1108 | && inline_skipped_frames (inferior_ptid)) |
1109 | { | |
09cee04b PA |
1110 | ptid_t resume_ptid; |
1111 | ||
1112 | /* Pretend that we've ran. */ | |
1113 | resume_ptid = user_visible_resume_ptid (1); | |
1114 | set_running (resume_ptid, 1); | |
1115 | ||
edb3359d | 1116 | step_into_inline_frame (inferior_ptid); |
243a9253 PA |
1117 | sm->count--; |
1118 | return prepare_one_step (sm); | |
edb3359d DJ |
1119 | } |
1120 | ||
1641cfcc PA |
1121 | pc = get_frame_pc (frame); |
1122 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
1123 | &tp->control.step_range_start, |
1124 | &tp->control.step_range_end); | |
5fbbeb29 | 1125 | |
c1e36e3e PA |
1126 | tp->control.may_range_step = 1; |
1127 | ||
5fbbeb29 | 1128 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 1129 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
1130 | { |
1131 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1132 | tp->control.may_range_step = 0; | |
1133 | } | |
16c381f0 | 1134 | else if (tp->control.step_range_end == 0) |
c906108c | 1135 | { |
2c02bd72 | 1136 | const char *name; |
abbb1732 | 1137 | |
1641cfcc | 1138 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
1139 | &tp->control.step_range_start, |
1140 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 1141 | error (_("Cannot find bounds of current function")); |
c906108c | 1142 | |
f8e3ef9d | 1143 | target_terminal_ours_for_output (); |
3e43a32a MS |
1144 | printf_filtered (_("Single stepping until exit from function %s," |
1145 | "\nwhich has no line number information.\n"), | |
1146 | name); | |
c906108c SS |
1147 | } |
1148 | } | |
1149 | else | |
1150 | { | |
1151 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1152 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1153 | if (!sm->skip_subroutines) |
c906108c SS |
1154 | /* It is stepi. |
1155 | Don't step over function calls, not even to functions lacking | |
1156 | line numbers. */ | |
16c381f0 | 1157 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1158 | } |
1159 | ||
243a9253 | 1160 | if (sm->skip_subroutines) |
16c381f0 | 1161 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1162 | |
243a9253 | 1163 | return 0; |
c906108c | 1164 | } |
243a9253 PA |
1165 | |
1166 | /* Done. */ | |
1167 | thread_fsm_set_finished (&sm->thread_fsm); | |
1168 | return 1; | |
c906108c | 1169 | } |
c2d11a7d | 1170 | |
c906108c SS |
1171 | \f |
1172 | /* Continue program at specified address. */ | |
1173 | ||
1174 | static void | |
fba45db2 | 1175 | jump_command (char *arg, int from_tty) |
c906108c | 1176 | { |
5af949e3 | 1177 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1178 | CORE_ADDR addr; |
c906108c SS |
1179 | struct symtabs_and_lines sals; |
1180 | struct symtab_and_line sal; | |
1181 | struct symbol *fn; | |
1182 | struct symbol *sfn; | |
6c4486e6 PA |
1183 | int async_exec; |
1184 | struct cleanup *args_chain; | |
c5aa993b | 1185 | |
c906108c | 1186 | ERROR_NO_INFERIOR; |
573cda03 | 1187 | ensure_not_tfind_mode (); |
d729566a | 1188 | ensure_valid_thread (); |
94cc34af | 1189 | ensure_not_running (); |
c906108c | 1190 | |
1777feb0 | 1191 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1192 | arg = strip_bg_char (arg, &async_exec); |
1193 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1194 | |
8bc2fe48 | 1195 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1196 | |
c906108c | 1197 | if (!arg) |
e2e0b3e5 | 1198 | error_no_arg (_("starting address")); |
c906108c | 1199 | |
39cf75f7 | 1200 | sals = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); |
c906108c SS |
1201 | if (sals.nelts != 1) |
1202 | { | |
8a3fe4f8 | 1203 | error (_("Unreasonable jump request")); |
c906108c SS |
1204 | } |
1205 | ||
1206 | sal = sals.sals[0]; | |
b8c9b27d | 1207 | xfree (sals.sals); |
c906108c | 1208 | |
6c4486e6 PA |
1209 | /* Done with ARGS. */ |
1210 | do_cleanups (args_chain); | |
1211 | ||
c906108c | 1212 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1213 | error (_("No source file has been specified.")); |
c906108c | 1214 | |
1777feb0 | 1215 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1216 | |
1777feb0 | 1217 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1218 | fn = get_frame_function (get_current_frame ()); |
1219 | sfn = find_pc_function (sal.pc); | |
1220 | if (fn != NULL && sfn != fn) | |
1221 | { | |
9e2f0ad4 | 1222 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
de5ad195 | 1223 | SYMBOL_PRINT_NAME (fn))) |
c906108c | 1224 | { |
8a3fe4f8 | 1225 | error (_("Not confirmed.")); |
c906108c SS |
1226 | /* NOTREACHED */ |
1227 | } | |
1228 | } | |
1229 | ||
c5aa993b | 1230 | if (sfn != NULL) |
c906108c | 1231 | { |
253342b8 DE |
1232 | struct obj_section *section; |
1233 | ||
c906108c | 1234 | fixup_symbol_section (sfn, 0); |
08be3fe3 | 1235 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sfn), sfn); |
253342b8 DE |
1236 | if (section_is_overlay (section) |
1237 | && !section_is_mapped (section)) | |
c906108c | 1238 | { |
3e43a32a MS |
1239 | if (!query (_("WARNING!!! Destination is in " |
1240 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1241 | { |
8a3fe4f8 | 1242 | error (_("Not confirmed.")); |
c906108c SS |
1243 | /* NOTREACHED */ |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | ||
c906108c SS |
1248 | addr = sal.pc; |
1249 | ||
1250 | if (from_tty) | |
1251 | { | |
a3f17187 | 1252 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1253 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1254 | printf_filtered (".\n"); |
1255 | } | |
1256 | ||
70509625 | 1257 | clear_proceed_status (0); |
64ce06e4 | 1258 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1259 | } |
c906108c | 1260 | \f |
c906108c SS |
1261 | /* Continue program giving it specified signal. */ |
1262 | ||
1263 | static void | |
fba45db2 | 1264 | signal_command (char *signum_exp, int from_tty) |
c906108c | 1265 | { |
2ea28649 | 1266 | enum gdb_signal oursig; |
6c4486e6 PA |
1267 | int async_exec; |
1268 | struct cleanup *args_chain; | |
c906108c SS |
1269 | |
1270 | dont_repeat (); /* Too dangerous. */ | |
1271 | ERROR_NO_INFERIOR; | |
573cda03 | 1272 | ensure_not_tfind_mode (); |
d729566a | 1273 | ensure_valid_thread (); |
94cc34af | 1274 | ensure_not_running (); |
c906108c | 1275 | |
32c1e744 | 1276 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1277 | signum_exp = strip_bg_char (signum_exp, &async_exec); |
1278 | args_chain = make_cleanup (xfree, signum_exp); | |
32c1e744 | 1279 | |
8bc2fe48 | 1280 | prepare_execution_command (¤t_target, async_exec); |
32c1e744 | 1281 | |
c906108c | 1282 | if (!signum_exp) |
e2e0b3e5 | 1283 | error_no_arg (_("signal number")); |
c906108c SS |
1284 | |
1285 | /* It would be even slicker to make signal names be valid expressions, | |
1286 | (the type could be "enum $signal" or some such), then the user could | |
1287 | assign them to convenience variables. */ | |
2ea28649 | 1288 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1289 | |
a493e3e2 | 1290 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1291 | { |
1292 | /* No, try numeric. */ | |
bb518678 | 1293 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1294 | |
1295 | if (num == 0) | |
a493e3e2 | 1296 | oursig = GDB_SIGNAL_0; |
c906108c | 1297 | else |
2ea28649 | 1298 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1299 | } |
1300 | ||
c6343a91 JK |
1301 | do_cleanups (args_chain); |
1302 | ||
70509625 PA |
1303 | /* Look for threads other than the current that this command ends up |
1304 | resuming too (due to schedlock off), and warn if they'll get a | |
1305 | signal delivered. "signal 0" is used to suppress a previous | |
1306 | signal, but if the current thread is no longer the one that got | |
1307 | the signal, then the user is potentially suppressing the signal | |
1308 | of the wrong thread. */ | |
1309 | if (!non_stop) | |
1310 | { | |
1311 | struct thread_info *tp; | |
1312 | ptid_t resume_ptid; | |
1313 | int must_confirm = 0; | |
1314 | ||
1315 | /* This indicates what will be resumed. Either a single thread, | |
1316 | a whole process, or all threads of all processes. */ | |
1317 | resume_ptid = user_visible_resume_ptid (0); | |
1318 | ||
1319 | ALL_NON_EXITED_THREADS (tp) | |
1320 | { | |
1321 | if (ptid_equal (tp->ptid, inferior_ptid)) | |
1322 | continue; | |
1323 | if (!ptid_match (tp->ptid, resume_ptid)) | |
1324 | continue; | |
1325 | ||
1326 | if (tp->suspend.stop_signal != GDB_SIGNAL_0 | |
1327 | && signal_pass_state (tp->suspend.stop_signal)) | |
1328 | { | |
1329 | if (!must_confirm) | |
1330 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1331 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1332 | print_thread_id (tp), | |
70509625 PA |
1333 | gdb_signal_to_name (tp->suspend.stop_signal), |
1334 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
1335 | must_confirm = 1; | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | if (must_confirm | |
43792cf0 | 1340 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1341 | "still deliver the signals noted above to their respective threads.\n" |
1342 | "Continue anyway? "), | |
43792cf0 | 1343 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1344 | error (_("Not confirmed.")); |
1345 | } | |
1346 | ||
c906108c SS |
1347 | if (from_tty) |
1348 | { | |
a493e3e2 | 1349 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1350 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1351 | else |
a3f17187 | 1352 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1353 | gdb_signal_to_name (oursig)); |
c906108c SS |
1354 | } |
1355 | ||
70509625 | 1356 | clear_proceed_status (0); |
64ce06e4 | 1357 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1358 | } |
1359 | ||
81219e53 DE |
1360 | /* Queue a signal to be delivered to the current thread. */ |
1361 | ||
1362 | static void | |
1363 | queue_signal_command (char *signum_exp, int from_tty) | |
1364 | { | |
1365 | enum gdb_signal oursig; | |
1366 | struct thread_info *tp; | |
1367 | ||
1368 | ERROR_NO_INFERIOR; | |
1369 | ensure_not_tfind_mode (); | |
1370 | ensure_valid_thread (); | |
1371 | ensure_not_running (); | |
1372 | ||
1373 | if (signum_exp == NULL) | |
1374 | error_no_arg (_("signal number")); | |
1375 | ||
1376 | /* It would be even slicker to make signal names be valid expressions, | |
1377 | (the type could be "enum $signal" or some such), then the user could | |
1378 | assign them to convenience variables. */ | |
1379 | oursig = gdb_signal_from_name (signum_exp); | |
1380 | ||
1381 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1382 | { | |
1383 | /* No, try numeric. */ | |
1384 | int num = parse_and_eval_long (signum_exp); | |
1385 | ||
1386 | if (num == 0) | |
1387 | oursig = GDB_SIGNAL_0; | |
1388 | else | |
1389 | oursig = gdb_signal_from_command (num); | |
1390 | } | |
1391 | ||
1392 | if (oursig != GDB_SIGNAL_0 | |
1393 | && !signal_pass_state (oursig)) | |
1394 | error (_("Signal handling set to not pass this signal to the program.")); | |
1395 | ||
1396 | tp = inferior_thread (); | |
1397 | tp->suspend.stop_signal = oursig; | |
1398 | } | |
1399 | ||
cfc31633 PA |
1400 | /* Data for the FSM that manages the until (with no argument) |
1401 | command. */ | |
1402 | ||
1403 | struct until_next_fsm | |
fa4cd53f | 1404 | { |
cfc31633 PA |
1405 | /* The base class. */ |
1406 | struct thread_fsm thread_fsm; | |
1407 | ||
1408 | /* The thread that as current when the command was executed. */ | |
fa4cd53f PA |
1409 | int thread; |
1410 | }; | |
1411 | ||
8980e177 PA |
1412 | static int until_next_fsm_should_stop (struct thread_fsm *self, |
1413 | struct thread_info *thread); | |
1414 | static void until_next_fsm_clean_up (struct thread_fsm *self, | |
1415 | struct thread_info *thread); | |
cfc31633 PA |
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 * | |
8980e177 | 1433 | new_until_next_fsm (struct interp *cmd_interp, int thread) |
cfc31633 PA |
1434 | { |
1435 | struct until_next_fsm *sm; | |
1436 | ||
1437 | sm = XCNEW (struct until_next_fsm); | |
8980e177 | 1438 | thread_fsm_ctor (&sm->thread_fsm, &until_next_fsm_ops, cmd_interp); |
cfc31633 PA |
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 | |
8980e177 PA |
1449 | until_next_fsm_should_stop (struct thread_fsm *self, |
1450 | struct thread_info *tp) | |
cfc31633 | 1451 | { |
cfc31633 PA |
1452 | if (tp->control.stop_step) |
1453 | thread_fsm_set_finished (self); | |
1454 | ||
1455 | return 1; | |
1456 | } | |
1457 | ||
1458 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1459 | arg) command. */ | |
186c406b TT |
1460 | |
1461 | static void | |
8980e177 | 1462 | until_next_fsm_clean_up (struct thread_fsm *self, struct thread_info *thread) |
186c406b | 1463 | { |
cfc31633 | 1464 | struct until_next_fsm *sm = (struct until_next_fsm *) self; |
186c406b | 1465 | |
8980e177 | 1466 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1467 | } |
1468 | ||
1469 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1470 | (with no arg) command. */ | |
1471 | ||
1472 | static enum async_reply_reason | |
1473 | until_next_fsm_async_reply_reason (struct thread_fsm *self) | |
1474 | { | |
1475 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1476 | } |
1477 | ||
c906108c SS |
1478 | /* Proceed until we reach a different source line with pc greater than |
1479 | our current one or exit the function. We skip calls in both cases. | |
1480 | ||
1481 | Note that eventually this command should probably be changed so | |
1482 | that only source lines are printed out when we hit the breakpoint | |
1483 | we set. This may involve changes to wait_for_inferior and the | |
1484 | proceed status code. */ | |
1485 | ||
c906108c | 1486 | static void |
fba45db2 | 1487 | until_next_command (int from_tty) |
c906108c SS |
1488 | { |
1489 | struct frame_info *frame; | |
1490 | CORE_ADDR pc; | |
1491 | struct symbol *func; | |
1492 | struct symtab_and_line sal; | |
4e1c45ea | 1493 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1494 | int thread = tp->global_num; |
186c406b | 1495 | struct cleanup *old_chain; |
cfc31633 | 1496 | struct until_next_fsm *sm; |
c5aa993b | 1497 | |
70509625 | 1498 | clear_proceed_status (0); |
edb3359d | 1499 | set_step_frame (); |
c906108c SS |
1500 | |
1501 | frame = get_current_frame (); | |
1502 | ||
1503 | /* Step until either exited from this function or greater | |
1504 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1505 | not). */ |
c906108c | 1506 | |
1c7819ef | 1507 | pc = get_frame_pc (frame); |
c906108c | 1508 | func = find_pc_function (pc); |
c5aa993b | 1509 | |
c906108c SS |
1510 | if (!func) |
1511 | { | |
7cbd4a93 | 1512 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1513 | |
7cbd4a93 | 1514 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1515 | error (_("Execution is not within a known function.")); |
c5aa993b | 1516 | |
77e371c0 | 1517 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1518 | /* The upper-bound of step_range is exclusive. In order to make PC |
1519 | within the range, set the step_range_end with PC + 1. */ | |
1520 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1521 | } |
1522 | else | |
1523 | { | |
1524 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1525 | |
16c381f0 JK |
1526 | tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
1527 | tp->control.step_range_end = sal.end; | |
c906108c | 1528 | } |
c1e36e3e | 1529 | tp->control.may_range_step = 1; |
c5aa993b | 1530 | |
16c381f0 | 1531 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1532 | |
186c406b TT |
1533 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
1534 | old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
1535 | ||
8980e177 | 1536 | sm = new_until_next_fsm (command_interp (), tp->global_num); |
cfc31633 PA |
1537 | tp->thread_fsm = &sm->thread_fsm; |
1538 | discard_cleanups (old_chain); | |
fa4cd53f | 1539 | |
cfc31633 | 1540 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1541 | } |
1542 | ||
c5aa993b | 1543 | static void |
fba45db2 | 1544 | until_command (char *arg, int from_tty) |
c906108c | 1545 | { |
6c4486e6 PA |
1546 | int async_exec; |
1547 | struct cleanup *args_chain; | |
43ff13b4 | 1548 | |
4247603b | 1549 | ERROR_NO_INFERIOR; |
573cda03 | 1550 | ensure_not_tfind_mode (); |
4247603b PA |
1551 | ensure_valid_thread (); |
1552 | ensure_not_running (); | |
573cda03 | 1553 | |
1777feb0 | 1554 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1555 | arg = strip_bg_char (arg, &async_exec); |
1556 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1557 | |
8bc2fe48 | 1558 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1559 | |
c906108c | 1560 | if (arg) |
ae66c1fc | 1561 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1562 | else |
1563 | until_next_command (from_tty); | |
6c4486e6 PA |
1564 | |
1565 | /* Done with ARGS. */ | |
1566 | do_cleanups (args_chain); | |
c906108c | 1567 | } |
ae66c1fc EZ |
1568 | |
1569 | static void | |
1570 | advance_command (char *arg, int from_tty) | |
1571 | { | |
6c4486e6 PA |
1572 | int async_exec; |
1573 | struct cleanup *args_chain; | |
ae66c1fc | 1574 | |
4247603b | 1575 | ERROR_NO_INFERIOR; |
573cda03 | 1576 | ensure_not_tfind_mode (); |
4247603b PA |
1577 | ensure_valid_thread (); |
1578 | ensure_not_running (); | |
573cda03 | 1579 | |
ae66c1fc | 1580 | if (arg == NULL) |
e2e0b3e5 | 1581 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1582 | |
1583 | /* Find out whether we must run in the background. */ | |
6c4486e6 PA |
1584 | arg = strip_bg_char (arg, &async_exec); |
1585 | args_chain = make_cleanup (xfree, arg); | |
ae66c1fc | 1586 | |
8bc2fe48 | 1587 | prepare_execution_command (¤t_target, async_exec); |
ae66c1fc EZ |
1588 | |
1589 | until_break_command (arg, from_tty, 1); | |
6c4486e6 PA |
1590 | |
1591 | /* Done with ARGS. */ | |
1592 | do_cleanups (args_chain); | |
ae66c1fc | 1593 | } |
c906108c | 1594 | \f |
cc72b2a2 | 1595 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1596 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1597 | right after an inferior call has finished. */ | |
f941662f | 1598 | |
cc72b2a2 | 1599 | struct value * |
0700e23e | 1600 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1601 | { |
0700e23e | 1602 | struct regcache *stop_regs; |
cc72b2a2 | 1603 | struct gdbarch *gdbarch; |
44e5158b | 1604 | struct value *value; |
0700e23e | 1605 | struct cleanup *cleanup; |
cc72b2a2 | 1606 | |
0700e23e PA |
1607 | stop_regs = regcache_dup (get_current_regcache ()); |
1608 | cleanup = make_cleanup_regcache_xfree (stop_regs); | |
cc72b2a2 KP |
1609 | |
1610 | gdbarch = get_regcache_arch (stop_regs); | |
44e5158b | 1611 | |
f168693b | 1612 | value_type = check_typedef (value_type); |
44e5158b | 1613 | gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID); |
11cf8741 | 1614 | |
92ad9cd9 AC |
1615 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1616 | call, it's possible (with no help from the architecture vector) | |
1617 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1618 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1619 | inferior function call code. In fact, when inferior function |
1620 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1621 | |
6a3a010b | 1622 | switch (gdbarch_return_value (gdbarch, function, value_type, |
c055b101 | 1623 | NULL, NULL, NULL)) |
44e5158b | 1624 | { |
750eb019 AC |
1625 | case RETURN_VALUE_REGISTER_CONVENTION: |
1626 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1627 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1628 | value = allocate_value (value_type); |
6a3a010b | 1629 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
990a07ab | 1630 | value_contents_raw (value), NULL); |
750eb019 AC |
1631 | break; |
1632 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1633 | value = NULL; | |
1634 | break; | |
1635 | default: | |
e2e0b3e5 | 1636 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1637 | } |
bb472c1e | 1638 | |
cc72b2a2 KP |
1639 | do_cleanups (cleanup); |
1640 | ||
1641 | return value; | |
1642 | } | |
1643 | ||
243a9253 PA |
1644 | /* The captured function return value/type and its position in the |
1645 | value history. */ | |
cc72b2a2 | 1646 | |
243a9253 | 1647 | struct return_value_info |
cc72b2a2 | 1648 | { |
243a9253 PA |
1649 | /* The captured return value. May be NULL if we weren't able to |
1650 | retrieve it. See get_return_value. */ | |
1651 | struct value *value; | |
1652 | ||
1653 | /* The return type. In some cases, we'll not be able extract the | |
1654 | return value, but we always know the type. */ | |
1655 | struct type *type; | |
1656 | ||
1657 | /* If we captured a value, this is the value history index. */ | |
1658 | int value_history_index; | |
1659 | }; | |
1660 | ||
1661 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1662 | |
243a9253 PA |
1663 | static void |
1664 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1665 | { | |
1666 | if (rv->value != NULL) | |
31db7b6c | 1667 | { |
79a45b7d | 1668 | struct value_print_options opts; |
f99d8bf4 PA |
1669 | struct ui_file *stb; |
1670 | struct cleanup *old_chain; | |
79a45b7d | 1671 | |
31db7b6c | 1672 | /* Print it. */ |
f99d8bf4 PA |
1673 | stb = mem_fileopen (); |
1674 | old_chain = make_cleanup_ui_file_delete (stb); | |
31db7b6c MK |
1675 | ui_out_text (uiout, "Value returned is "); |
1676 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", | |
243a9253 | 1677 | rv->value_history_index); |
31db7b6c | 1678 | ui_out_text (uiout, " = "); |
2a998fc0 | 1679 | get_no_prettyformat_print_options (&opts); |
243a9253 | 1680 | value_print (rv->value, stb, &opts); |
31db7b6c MK |
1681 | ui_out_field_stream (uiout, "return-value", stb); |
1682 | ui_out_text (uiout, "\n"); | |
1d751abe | 1683 | do_cleanups (old_chain); |
31db7b6c MK |
1684 | } |
1685 | else | |
1686 | { | |
2f41223f AT |
1687 | struct cleanup *oldchain; |
1688 | char *type_name; | |
1689 | ||
243a9253 | 1690 | type_name = type_to_string (rv->type); |
2f41223f | 1691 | oldchain = make_cleanup (xfree, type_name); |
31db7b6c | 1692 | ui_out_text (uiout, "Value returned has type: "); |
2f41223f | 1693 | ui_out_field_string (uiout, "return-type", type_name); |
1d751abe PA |
1694 | ui_out_text (uiout, "."); |
1695 | ui_out_text (uiout, " Cannot determine contents\n"); | |
2f41223f | 1696 | do_cleanups (oldchain); |
31db7b6c | 1697 | } |
11cf8741 JM |
1698 | } |
1699 | ||
243a9253 PA |
1700 | /* Print the result of a function at the end of a 'finish' command. |
1701 | RV points at an object representing the captured return value/type | |
1702 | and its position in the value history. */ | |
1703 | ||
1704 | void | |
1705 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1706 | { | |
1707 | if (rv->type == NULL || TYPE_CODE (rv->type) == TYPE_CODE_VOID) | |
1708 | return; | |
1709 | ||
1710 | TRY | |
1711 | { | |
1712 | /* print_return_value_1 can throw an exception in some | |
1713 | circumstances. We need to catch this so that we still | |
1714 | delete the breakpoint. */ | |
1715 | print_return_value_1 (uiout, rv); | |
1716 | } | |
1717 | CATCH (ex, RETURN_MASK_ALL) | |
1718 | { | |
1719 | exception_print (gdb_stdout, ex); | |
1720 | } | |
1721 | END_CATCH | |
1722 | } | |
1723 | ||
1724 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1725 | |
243a9253 | 1726 | struct finish_command_fsm |
43ff13b4 | 1727 | { |
243a9253 PA |
1728 | /* The base class. */ |
1729 | struct thread_fsm thread_fsm; | |
1730 | ||
243a9253 PA |
1731 | /* The momentary breakpoint set at the function's return address in |
1732 | the caller. */ | |
43ff13b4 | 1733 | struct breakpoint *breakpoint; |
243a9253 PA |
1734 | |
1735 | /* The function that we're stepping out of. */ | |
bfec99b2 | 1736 | struct symbol *function; |
8a6c4031 | 1737 | |
243a9253 PA |
1738 | /* If the FSM finishes successfully, this stores the function's |
1739 | return value. */ | |
1740 | struct return_value_info return_value; | |
bfec99b2 | 1741 | }; |
c5aa993b | 1742 | |
8980e177 PA |
1743 | static int finish_command_fsm_should_stop (struct thread_fsm *self, |
1744 | struct thread_info *thread); | |
1745 | static void finish_command_fsm_clean_up (struct thread_fsm *self, | |
1746 | struct thread_info *thread); | |
243a9253 PA |
1747 | static struct return_value_info * |
1748 | finish_command_fsm_return_value (struct thread_fsm *self); | |
1749 | static enum async_reply_reason | |
1750 | finish_command_fsm_async_reply_reason (struct thread_fsm *self); | |
1751 | ||
1752 | /* finish_command_fsm's vtable. */ | |
1753 | ||
1754 | static struct thread_fsm_ops finish_command_fsm_ops = | |
1755 | { | |
1756 | NULL, /* dtor */ | |
1757 | finish_command_fsm_clean_up, | |
1758 | finish_command_fsm_should_stop, | |
1759 | finish_command_fsm_return_value, | |
1760 | finish_command_fsm_async_reply_reason, | |
8980e177 | 1761 | NULL, /* should_notify_stop */ |
243a9253 PA |
1762 | }; |
1763 | ||
1764 | /* Allocate a new finish_command_fsm. */ | |
1765 | ||
1766 | static struct finish_command_fsm * | |
8980e177 | 1767 | new_finish_command_fsm (struct interp *cmd_interp) |
bfec99b2 | 1768 | { |
243a9253 PA |
1769 | struct finish_command_fsm *sm; |
1770 | ||
1771 | sm = XCNEW (struct finish_command_fsm); | |
8980e177 | 1772 | thread_fsm_ctor (&sm->thread_fsm, &finish_command_fsm_ops, cmd_interp); |
243a9253 PA |
1773 | |
1774 | return sm; | |
1775 | } | |
347bddb7 | 1776 | |
243a9253 PA |
1777 | /* Implementation of the 'should_stop' FSM method for the finish |
1778 | commands. Detects whether the thread stepped out of the function | |
1779 | successfully, and if so, captures the function's return value and | |
1780 | marks the FSM finished. */ | |
1781 | ||
1782 | static int | |
8980e177 PA |
1783 | finish_command_fsm_should_stop (struct thread_fsm *self, |
1784 | struct thread_info *tp) | |
243a9253 PA |
1785 | { |
1786 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
1787 | struct return_value_info *rv = &f->return_value; | |
243a9253 PA |
1788 | |
1789 | if (f->function != NULL | |
1790 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
1791 | f->breakpoint) != NULL) | |
43ff13b4 | 1792 | { |
243a9253 PA |
1793 | /* We're done. */ |
1794 | thread_fsm_set_finished (self); | |
bfec99b2 | 1795 | |
243a9253 PA |
1796 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (f->function)); |
1797 | if (rv->type == NULL) | |
1798 | internal_error (__FILE__, __LINE__, | |
1799 | _("finish_command: function has no target type")); | |
f5871ec0 | 1800 | |
243a9253 | 1801 | if (TYPE_CODE (rv->type) != TYPE_CODE_VOID) |
40c549d6 | 1802 | { |
243a9253 PA |
1803 | struct value *func; |
1804 | ||
1805 | func = read_var_value (f->function, NULL, get_current_frame ()); | |
0700e23e | 1806 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1807 | if (rv->value != NULL) |
1808 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1809 | } |
1810 | } | |
1811 | else if (tp->control.stop_step) | |
1812 | { | |
1813 | /* Finishing from an inline frame, or reverse finishing. In | |
1814 | either case, there's no way to retrieve the return value. */ | |
1815 | thread_fsm_set_finished (self); | |
1816 | } | |
fa4cd53f | 1817 | |
243a9253 PA |
1818 | return 1; |
1819 | } | |
40c549d6 | 1820 | |
243a9253 PA |
1821 | /* Implementation of the 'clean_up' FSM method for the finish |
1822 | commands. */ | |
fa4cd53f | 1823 | |
243a9253 | 1824 | static void |
8980e177 PA |
1825 | finish_command_fsm_clean_up (struct thread_fsm *self, |
1826 | struct thread_info *thread) | |
243a9253 PA |
1827 | { |
1828 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
fa4cd53f | 1829 | |
243a9253 PA |
1830 | if (f->breakpoint != NULL) |
1831 | { | |
1832 | delete_breakpoint (f->breakpoint); | |
1833 | f->breakpoint = NULL; | |
43ff13b4 | 1834 | } |
8980e177 | 1835 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1836 | } |
f941662f | 1837 | |
243a9253 PA |
1838 | /* Implementation of the 'return_value' FSM method for the finish |
1839 | commands. */ | |
1840 | ||
1841 | static struct return_value_info * | |
1842 | finish_command_fsm_return_value (struct thread_fsm *self) | |
1843 | { | |
1844 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
1845 | ||
1846 | return &f->return_value; | |
43ff13b4 JM |
1847 | } |
1848 | ||
243a9253 PA |
1849 | /* Implementation of the 'async_reply_reason' FSM method for the |
1850 | finish commands. */ | |
1851 | ||
1852 | static enum async_reply_reason | |
1853 | finish_command_fsm_async_reply_reason (struct thread_fsm *self) | |
604ead4a | 1854 | { |
243a9253 PA |
1855 | if (execution_direction == EXEC_REVERSE) |
1856 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1857 | else | |
1858 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1859 | } |
1860 | ||
b2175913 MS |
1861 | /* finish_backward -- helper function for finish_command. */ |
1862 | ||
1863 | static void | |
243a9253 | 1864 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1865 | { |
1866 | struct symtab_and_line sal; | |
1867 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1868 | CORE_ADDR pc; |
b2175913 | 1869 | CORE_ADDR func_addr; |
b2175913 | 1870 | |
1c7819ef PA |
1871 | pc = get_frame_pc (get_current_frame ()); |
1872 | ||
1873 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1874 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1875 | |
1876 | sal = find_pc_line (func_addr, 0); | |
1877 | ||
9da8c2a0 | 1878 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1879 | /* Special case: if we're sitting at the function entry point, |
1880 | then all we need to do is take a reverse singlestep. We | |
1881 | don't need to set a breakpoint, and indeed it would do us | |
1882 | no good to do so. | |
1883 | ||
1884 | Note that this can only happen at frame #0, since there's | |
1885 | no way that a function up the stack can have a return address | |
1886 | that's equal to its entry point. */ | |
1887 | ||
1c7819ef | 1888 | if (sal.pc != pc) |
b2175913 | 1889 | { |
a6d9a66e UW |
1890 | struct frame_info *frame = get_selected_frame (NULL); |
1891 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1892 | struct symtab_and_line sr_sal; |
1893 | ||
1894 | /* Set a step-resume at the function's entry point. Once that's | |
1895 | hit, we'll do one more step backwards. */ | |
1896 | init_sal (&sr_sal); | |
1897 | sr_sal.pc = sal.pc; | |
1898 | sr_sal.pspace = get_frame_program_space (frame); | |
1899 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1900 | sr_sal, null_frame_id); | |
a6d9a66e | 1901 | |
64ce06e4 | 1902 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1903 | } |
1904 | else | |
b2175913 | 1905 | { |
9da8c2a0 PA |
1906 | /* We're almost there -- we just need to back up by one more |
1907 | single-step. */ | |
16c381f0 | 1908 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1909 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1910 | } |
b2175913 MS |
1911 | } |
1912 | ||
243a9253 PA |
1913 | /* finish_forward -- helper function for finish_command. FRAME is the |
1914 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1915 | |
1916 | static void | |
243a9253 | 1917 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1918 | { |
def166f6 | 1919 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1920 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1921 | struct symtab_and_line sal; |
1922 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1923 | |
1924 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1925 | sal.pc = get_frame_pc (frame); | |
1926 | ||
243a9253 PA |
1927 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1928 | get_stack_frame_id (frame), | |
1929 | bp_finish); | |
b2175913 | 1930 | |
c70a6932 JK |
1931 | /* set_momentary_breakpoint invalidates FRAME. */ |
1932 | frame = NULL; | |
1933 | ||
def166f6 | 1934 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1935 | |
46c03469 | 1936 | /* We want to print return value, please... */ |
16c381f0 | 1937 | tp->control.proceed_to_finish = 1; |
b2175913 | 1938 | |
243a9253 | 1939 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1940 | } |
1941 | ||
e3b5daf9 MM |
1942 | /* Skip frames for "finish". */ |
1943 | ||
1944 | static struct frame_info * | |
1945 | skip_finish_frames (struct frame_info *frame) | |
1946 | { | |
1947 | struct frame_info *start; | |
1948 | ||
1949 | do | |
1950 | { | |
1951 | start = frame; | |
1952 | ||
1953 | frame = skip_tailcall_frames (frame); | |
1954 | if (frame == NULL) | |
1955 | break; | |
1956 | ||
1957 | frame = skip_unwritable_frames (frame); | |
1958 | if (frame == NULL) | |
1959 | break; | |
1960 | } | |
1961 | while (start != frame); | |
1962 | ||
1963 | return frame; | |
1964 | } | |
1965 | ||
f941662f MK |
1966 | /* "finish": Set a temporary breakpoint at the place the selected |
1967 | frame will return to, then continue. */ | |
c906108c SS |
1968 | |
1969 | static void | |
fba45db2 | 1970 | finish_command (char *arg, int from_tty) |
c906108c | 1971 | { |
52f0bd74 | 1972 | struct frame_info *frame; |
6c4486e6 PA |
1973 | int async_exec; |
1974 | struct cleanup *args_chain; | |
243a9253 PA |
1975 | struct finish_command_fsm *sm; |
1976 | struct thread_info *tp; | |
43ff13b4 | 1977 | |
4247603b | 1978 | ERROR_NO_INFERIOR; |
573cda03 | 1979 | ensure_not_tfind_mode (); |
4247603b PA |
1980 | ensure_valid_thread (); |
1981 | ensure_not_running (); | |
573cda03 | 1982 | |
f941662f | 1983 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1984 | arg = strip_bg_char (arg, &async_exec); |
1985 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1986 | |
8bc2fe48 | 1987 | prepare_execution_command (¤t_target, async_exec); |
c906108c SS |
1988 | |
1989 | if (arg) | |
8a3fe4f8 | 1990 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1991 | |
6c4486e6 PA |
1992 | /* Done with ARGS. */ |
1993 | do_cleanups (args_chain); | |
1994 | ||
206415a3 | 1995 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1996 | if (frame == 0) |
8a3fe4f8 | 1997 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1998 | |
70509625 | 1999 | clear_proceed_status (0); |
c906108c | 2000 | |
243a9253 PA |
2001 | tp = inferior_thread (); |
2002 | ||
8980e177 | 2003 | sm = new_finish_command_fsm (command_interp ()); |
243a9253 PA |
2004 | |
2005 | tp->thread_fsm = &sm->thread_fsm; | |
2006 | ||
edb3359d | 2007 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 2008 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
2009 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
2010 | == INLINE_FRAME) | |
2011 | { | |
2012 | /* Claim we are stepping in the calling frame. An empty step | |
2013 | range means that we will stop once we aren't in a function | |
2014 | called by that frame. We don't use the magic "1" value for | |
2015 | step_range_end, because then infrun will think this is nexti, | |
2016 | and not step over the rest of this inlined function call. */ | |
edb3359d | 2017 | struct symtab_and_line empty_sal; |
abbb1732 | 2018 | |
edb3359d DJ |
2019 | init_sal (&empty_sal); |
2020 | set_step_info (frame, empty_sal); | |
16c381f0 JK |
2021 | tp->control.step_range_start = get_frame_pc (frame); |
2022 | tp->control.step_range_end = tp->control.step_range_start; | |
2023 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
2024 | |
2025 | /* Print info on the selected frame, including level number but not | |
2026 | source. */ | |
2027 | if (from_tty) | |
2028 | { | |
2029 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 2030 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
2031 | } |
2032 | ||
64ce06e4 | 2033 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
2034 | return; |
2035 | } | |
2036 | ||
c906108c SS |
2037 | /* Find the function we will return from. */ |
2038 | ||
243a9253 | 2039 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 2040 | |
f941662f MK |
2041 | /* Print info on the selected frame, including level number but not |
2042 | source. */ | |
c906108c SS |
2043 | if (from_tty) |
2044 | { | |
b2175913 MS |
2045 | if (execution_direction == EXEC_REVERSE) |
2046 | printf_filtered (_("Run back to call of ")); | |
2047 | else | |
743649fd | 2048 | { |
243a9253 | 2049 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
2050 | && !query (_("warning: Function %s does not return normally.\n" |
2051 | "Try to finish anyway? "), | |
243a9253 | 2052 | SYMBOL_PRINT_NAME (sm->function))) |
743649fd MW |
2053 | error (_("Not confirmed.")); |
2054 | printf_filtered (_("Run till exit from ")); | |
2055 | } | |
b2175913 | 2056 | |
08d72866 | 2057 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
2058 | } |
2059 | ||
b2175913 | 2060 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 2061 | finish_backward (sm); |
b2175913 | 2062 | else |
33b4777c | 2063 | { |
e3b5daf9 | 2064 | frame = skip_finish_frames (frame); |
7eb89530 | 2065 | |
33b4777c MM |
2066 | if (frame == NULL) |
2067 | error (_("Cannot find the caller frame.")); | |
2068 | ||
2069 | finish_forward (sm, frame); | |
2070 | } | |
c906108c SS |
2071 | } |
2072 | \f | |
f941662f | 2073 | |
c906108c | 2074 | static void |
fba45db2 | 2075 | program_info (char *args, int from_tty) |
c906108c | 2076 | { |
347bddb7 PA |
2077 | bpstat bs; |
2078 | int num, stat; | |
2079 | struct thread_info *tp; | |
2080 | ptid_t ptid; | |
c5aa993b | 2081 | |
c906108c SS |
2082 | if (!target_has_execution) |
2083 | { | |
a3f17187 | 2084 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
2085 | return; |
2086 | } | |
2087 | ||
347bddb7 PA |
2088 | if (non_stop) |
2089 | ptid = inferior_ptid; | |
2090 | else | |
2091 | { | |
2092 | struct target_waitstatus ws; | |
abbb1732 | 2093 | |
347bddb7 PA |
2094 | get_last_target_status (&ptid, &ws); |
2095 | } | |
2096 | ||
2097 | if (ptid_equal (ptid, null_ptid) || is_exited (ptid)) | |
2098 | error (_("Invalid selected thread.")); | |
2099 | else if (is_running (ptid)) | |
2100 | error (_("Selected thread is running.")); | |
2101 | ||
e09875d4 | 2102 | tp = find_thread_ptid (ptid); |
16c381f0 | 2103 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
2104 | stat = bpstat_num (&bs, &num); |
2105 | ||
c906108c | 2106 | target_files_info (); |
5af949e3 | 2107 | printf_filtered (_("Program stopped at %s.\n"), |
f5656ead | 2108 | paddress (target_gdbarch (), stop_pc)); |
16c381f0 | 2109 | if (tp->control.stop_step) |
a3f17187 | 2110 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 2111 | else if (stat != 0) |
c906108c SS |
2112 | { |
2113 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 2114 | isn't as strange as it seems. */ |
8671a17b | 2115 | while (stat != 0) |
c906108c | 2116 | { |
8671a17b | 2117 | if (stat < 0) |
c906108c | 2118 | { |
3e43a32a MS |
2119 | printf_filtered (_("It stopped at a breakpoint " |
2120 | "that has since been deleted.\n")); | |
c906108c SS |
2121 | } |
2122 | else | |
a3f17187 | 2123 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 2124 | stat = bpstat_num (&bs, &num); |
c906108c SS |
2125 | } |
2126 | } | |
a493e3e2 | 2127 | else if (tp->suspend.stop_signal != GDB_SIGNAL_0) |
c906108c | 2128 | { |
a3f17187 | 2129 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
2ea28649 PA |
2130 | gdb_signal_to_name (tp->suspend.stop_signal), |
2131 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
c906108c SS |
2132 | } |
2133 | ||
0d41ba00 | 2134 | if (from_tty) |
c906108c | 2135 | { |
3e43a32a MS |
2136 | printf_filtered (_("Type \"info stack\" or \"info " |
2137 | "registers\" for more information.\n")); | |
c906108c SS |
2138 | } |
2139 | } | |
2140 | \f | |
2141 | static void | |
fba45db2 | 2142 | environment_info (char *var, int from_tty) |
c906108c SS |
2143 | { |
2144 | if (var) | |
2145 | { | |
3f81c18a | 2146 | char *val = get_in_environ (current_inferior ()->environment, var); |
abbb1732 | 2147 | |
c906108c SS |
2148 | if (val) |
2149 | { | |
2150 | puts_filtered (var); | |
2151 | puts_filtered (" = "); | |
2152 | puts_filtered (val); | |
2153 | puts_filtered ("\n"); | |
2154 | } | |
2155 | else | |
2156 | { | |
2157 | puts_filtered ("Environment variable \""); | |
2158 | puts_filtered (var); | |
2159 | puts_filtered ("\" not defined.\n"); | |
2160 | } | |
2161 | } | |
2162 | else | |
2163 | { | |
3f81c18a | 2164 | char **vector = environ_vector (current_inferior ()->environment); |
abbb1732 | 2165 | |
c906108c SS |
2166 | while (*vector) |
2167 | { | |
2168 | puts_filtered (*vector++); | |
2169 | puts_filtered ("\n"); | |
2170 | } | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | static void | |
fba45db2 | 2175 | set_environment_command (char *arg, int from_tty) |
c906108c | 2176 | { |
52f0bd74 | 2177 | char *p, *val, *var; |
c906108c SS |
2178 | int nullset = 0; |
2179 | ||
2180 | if (arg == 0) | |
e2e0b3e5 | 2181 | error_no_arg (_("environment variable and value")); |
c906108c | 2182 | |
1777feb0 | 2183 | /* Find seperation between variable name and value. */ |
c906108c SS |
2184 | p = (char *) strchr (arg, '='); |
2185 | val = (char *) strchr (arg, ' '); | |
2186 | ||
2187 | if (p != 0 && val != 0) | |
2188 | { | |
2189 | /* We have both a space and an equals. If the space is before the | |
c5aa993b | 2190 | equals, walk forward over the spaces til we see a nonspace |
1777feb0 | 2191 | (possibly the equals). */ |
c906108c SS |
2192 | if (p > val) |
2193 | while (*val == ' ') | |
2194 | val++; | |
2195 | ||
2196 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 2197 | take the char following the spaces. */ |
c906108c SS |
2198 | if (p > val) |
2199 | p = val - 1; | |
2200 | } | |
2201 | else if (val != 0 && p == 0) | |
2202 | p = val; | |
2203 | ||
2204 | if (p == arg) | |
e2e0b3e5 | 2205 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2206 | |
2207 | if (p == 0 || p[1] == 0) | |
2208 | { | |
2209 | nullset = 1; | |
2210 | if (p == 0) | |
1777feb0 | 2211 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2212 | } |
2213 | else | |
2214 | { | |
1777feb0 | 2215 | /* Not setting variable value to null. */ |
c906108c SS |
2216 | val = p + 1; |
2217 | while (*val == ' ' || *val == '\t') | |
2218 | val++; | |
2219 | } | |
2220 | ||
c5aa993b JM |
2221 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2222 | p--; | |
c906108c SS |
2223 | |
2224 | var = savestring (arg, p - arg); | |
2225 | if (nullset) | |
2226 | { | |
3e43a32a MS |
2227 | printf_filtered (_("Setting environment variable " |
2228 | "\"%s\" to null value.\n"), | |
a3f17187 | 2229 | var); |
3f81c18a | 2230 | set_in_environ (current_inferior ()->environment, var, ""); |
c906108c SS |
2231 | } |
2232 | else | |
3f81c18a | 2233 | set_in_environ (current_inferior ()->environment, var, val); |
b8c9b27d | 2234 | xfree (var); |
c906108c SS |
2235 | } |
2236 | ||
2237 | static void | |
fba45db2 | 2238 | unset_environment_command (char *var, int from_tty) |
c906108c SS |
2239 | { |
2240 | if (var == 0) | |
2241 | { | |
2242 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 2243 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2244 | if (!from_tty || query (_("Delete all environment variables? "))) |
c906108c | 2245 | { |
3f81c18a VP |
2246 | free_environ (current_inferior ()->environment); |
2247 | current_inferior ()->environment = make_environ (); | |
c906108c SS |
2248 | } |
2249 | } | |
2250 | else | |
3f81c18a | 2251 | unset_in_environ (current_inferior ()->environment, var); |
c906108c SS |
2252 | } |
2253 | ||
1777feb0 | 2254 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2255 | |
2256 | static const char path_var_name[] = "PATH"; | |
2257 | ||
c906108c | 2258 | static void |
fba45db2 | 2259 | path_info (char *args, int from_tty) |
c906108c SS |
2260 | { |
2261 | puts_filtered ("Executable and object file path: "); | |
3e43a32a MS |
2262 | puts_filtered (get_in_environ (current_inferior ()->environment, |
2263 | path_var_name)); | |
c906108c SS |
2264 | puts_filtered ("\n"); |
2265 | } | |
2266 | ||
2267 | /* Add zero or more directories to the front of the execution path. */ | |
2268 | ||
2269 | static void | |
fba45db2 | 2270 | path_command (char *dirname, int from_tty) |
c906108c SS |
2271 | { |
2272 | char *exec_path; | |
2273 | char *env; | |
abbb1732 | 2274 | |
c906108c | 2275 | dont_repeat (); |
3f81c18a | 2276 | env = get_in_environ (current_inferior ()->environment, path_var_name); |
1777feb0 | 2277 | /* Can be null if path is not set. */ |
c906108c SS |
2278 | if (!env) |
2279 | env = ""; | |
4fcf66da | 2280 | exec_path = xstrdup (env); |
c906108c | 2281 | mod_path (dirname, &exec_path); |
3f81c18a | 2282 | set_in_environ (current_inferior ()->environment, path_var_name, exec_path); |
b8c9b27d | 2283 | xfree (exec_path); |
c906108c | 2284 | if (from_tty) |
c5aa993b | 2285 | path_info ((char *) NULL, from_tty); |
c906108c | 2286 | } |
c906108c | 2287 | \f |
c5aa993b | 2288 | |
1292279a PA |
2289 | /* Print out the register NAME with value VAL, to FILE, in the default |
2290 | fashion. */ | |
2291 | ||
2292 | static void | |
2293 | default_print_one_register_info (struct ui_file *file, | |
2294 | const char *name, | |
2295 | struct value *val) | |
2296 | { | |
2297 | struct type *regtype = value_type (val); | |
f69d9aef | 2298 | int print_raw_format; |
1292279a PA |
2299 | |
2300 | fputs_filtered (name, file); | |
2301 | print_spaces_filtered (15 - strlen (name), file); | |
2302 | ||
f69d9aef AB |
2303 | print_raw_format = (value_entirely_available (val) |
2304 | && !value_optimized_out (val)); | |
1292279a PA |
2305 | |
2306 | /* If virtual format is floating, print it that way, and in raw | |
2307 | hex. */ | |
2308 | if (TYPE_CODE (regtype) == TYPE_CODE_FLT | |
2309 | || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT) | |
2310 | { | |
1292279a PA |
2311 | struct value_print_options opts; |
2312 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
2313 | enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (regtype)); | |
2314 | ||
2315 | get_user_print_options (&opts); | |
2316 | opts.deref_ref = 1; | |
2317 | ||
2318 | val_print (regtype, | |
2319 | value_contents_for_printing (val), | |
2320 | value_embedded_offset (val), 0, | |
2321 | file, 0, val, &opts, current_language); | |
2322 | ||
f69d9aef AB |
2323 | if (print_raw_format) |
2324 | { | |
2325 | fprintf_filtered (file, "\t(raw "); | |
2326 | print_hex_chars (file, valaddr, TYPE_LENGTH (regtype), byte_order); | |
2327 | fprintf_filtered (file, ")"); | |
2328 | } | |
1292279a PA |
2329 | } |
2330 | else | |
2331 | { | |
2332 | struct value_print_options opts; | |
2333 | ||
2334 | /* Print the register in hex. */ | |
2335 | get_formatted_print_options (&opts, 'x'); | |
2336 | opts.deref_ref = 1; | |
2337 | val_print (regtype, | |
2338 | value_contents_for_printing (val), | |
2339 | value_embedded_offset (val), 0, | |
2340 | file, 0, val, &opts, current_language); | |
2341 | /* If not a vector register, print it also according to its | |
2342 | natural format. */ | |
f69d9aef | 2343 | if (print_raw_format && TYPE_VECTOR (regtype) == 0) |
1292279a PA |
2344 | { |
2345 | get_user_print_options (&opts); | |
2346 | opts.deref_ref = 1; | |
2347 | fprintf_filtered (file, "\t"); | |
2348 | val_print (regtype, | |
2349 | value_contents_for_printing (val), | |
2350 | value_embedded_offset (val), 0, | |
2351 | file, 0, val, &opts, current_language); | |
2352 | } | |
2353 | } | |
2354 | ||
2355 | fprintf_filtered (file, "\n"); | |
2356 | } | |
2357 | ||
1777feb0 | 2358 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2359 | registers (print_all == 1) or all non-float and non-vector |
2360 | registers (print_all == 0). | |
c906108c SS |
2361 | |
2362 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2363 | register(s) one per line is good enough. If a different format is |
2364 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2365 | regs), or there is an existing convention for showing all the | |
2366 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2367 | provide that format. */ | |
c906108c | 2368 | |
666e11c5 | 2369 | void |
0ab7a791 AC |
2370 | default_print_registers_info (struct gdbarch *gdbarch, |
2371 | struct ui_file *file, | |
2372 | struct frame_info *frame, | |
2373 | int regnum, int print_all) | |
c906108c | 2374 | { |
0ab7a791 | 2375 | int i; |
a4bd449d UW |
2376 | const int numregs = gdbarch_num_regs (gdbarch) |
2377 | + gdbarch_num_pseudo_regs (gdbarch); | |
0ab7a791 | 2378 | |
c906108c SS |
2379 | for (i = 0; i < numregs; i++) |
2380 | { | |
4782dc19 AC |
2381 | /* Decide between printing all regs, non-float / vector regs, or |
2382 | specific reg. */ | |
c5aa993b JM |
2383 | if (regnum == -1) |
2384 | { | |
f9418c0f | 2385 | if (print_all) |
4782dc19 | 2386 | { |
f9418c0f | 2387 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2388 | continue; |
f9418c0f AC |
2389 | } |
2390 | else | |
2391 | { | |
2392 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2393 | continue; |
2394 | } | |
c5aa993b JM |
2395 | } |
2396 | else | |
2397 | { | |
2398 | if (i != regnum) | |
2399 | continue; | |
2400 | } | |
c906108c SS |
2401 | |
2402 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 2403 | processor, so don't display anything. */ |
a4bd449d UW |
2404 | if (gdbarch_register_name (gdbarch, i) == NULL |
2405 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2406 | continue; |
2407 | ||
1292279a PA |
2408 | default_print_one_register_info (file, |
2409 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2410 | value_of_register (i, frame)); |
c906108c SS |
2411 | } |
2412 | } | |
c906108c | 2413 | |
c906108c | 2414 | void |
fba45db2 | 2415 | registers_info (char *addr_exp, int fpregs) |
c906108c | 2416 | { |
206415a3 | 2417 | struct frame_info *frame; |
a4bd449d | 2418 | struct gdbarch *gdbarch; |
c906108c SS |
2419 | |
2420 | if (!target_has_registers) | |
8a3fe4f8 | 2421 | error (_("The program has no registers now.")); |
206415a3 | 2422 | frame = get_selected_frame (NULL); |
a4bd449d | 2423 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2424 | |
2425 | if (!addr_exp) | |
2426 | { | |
a4bd449d | 2427 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2428 | frame, -1, fpregs); |
c906108c SS |
2429 | return; |
2430 | } | |
2431 | ||
f9418c0f | 2432 | while (*addr_exp != '\0') |
c5aa993b | 2433 | { |
f9418c0f AC |
2434 | char *start; |
2435 | const char *end; | |
c906108c | 2436 | |
529480d0 KS |
2437 | /* Skip leading white space. */ |
2438 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2439 | |
f9418c0f AC |
2440 | /* Discard any leading ``$''. Check that there is something |
2441 | resembling a register following it. */ | |
2442 | if (addr_exp[0] == '$') | |
2443 | addr_exp++; | |
2444 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2445 | error (_("Missing register name")); |
c906108c | 2446 | |
f9418c0f AC |
2447 | /* Find the start/end of this register name/num/group. */ |
2448 | start = addr_exp; | |
2449 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2450 | addr_exp++; | |
2451 | end = addr_exp; | |
ad842144 | 2452 | |
f9418c0f AC |
2453 | /* Figure out what we've found and display it. */ |
2454 | ||
2455 | /* A register name? */ | |
2456 | { | |
029a67e4 | 2457 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2458 | |
f9418c0f AC |
2459 | if (regnum >= 0) |
2460 | { | |
ad842144 MR |
2461 | /* User registers lie completely outside of the range of |
2462 | normal registers. Catch them early so that the target | |
2463 | never sees them. */ | |
2464 | if (regnum >= gdbarch_num_regs (gdbarch) | |
2465 | + gdbarch_num_pseudo_regs (gdbarch)) | |
2466 | { | |
1292279a PA |
2467 | struct value *regval = value_of_user_reg (regnum, frame); |
2468 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2469 | regnum); | |
2470 | ||
2471 | /* Print in the same fashion | |
2472 | gdbarch_print_registers_info's default | |
2473 | implementation prints. */ | |
2474 | default_print_one_register_info (gdb_stdout, | |
2475 | regname, | |
2476 | regval); | |
ad842144 MR |
2477 | } |
2478 | else | |
2479 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2480 | frame, regnum, fpregs); | |
f9418c0f AC |
2481 | continue; |
2482 | } | |
2483 | } | |
ad842144 | 2484 | |
f9418c0f AC |
2485 | /* A register group? */ |
2486 | { | |
6c7d17ba | 2487 | struct reggroup *group; |
abbb1732 | 2488 | |
a4bd449d | 2489 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2490 | group != NULL; |
a4bd449d | 2491 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2492 | { |
2493 | /* Don't bother with a length check. Should the user | |
2494 | enter a short register group name, go with the first | |
2495 | group that matches. */ | |
6c7d17ba | 2496 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2497 | break; |
2498 | } | |
6c7d17ba | 2499 | if (group != NULL) |
f9418c0f AC |
2500 | { |
2501 | int regnum; | |
abbb1732 | 2502 | |
f57d151a | 2503 | for (regnum = 0; |
a4bd449d UW |
2504 | regnum < gdbarch_num_regs (gdbarch) |
2505 | + gdbarch_num_pseudo_regs (gdbarch); | |
f57d151a | 2506 | regnum++) |
f9418c0f | 2507 | { |
a4bd449d UW |
2508 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2509 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2510 | gdb_stdout, frame, |
f9418c0f AC |
2511 | regnum, fpregs); |
2512 | } | |
2513 | continue; | |
2514 | } | |
2515 | } | |
c906108c | 2516 | |
f9418c0f | 2517 | /* Nothing matched. */ |
8a3fe4f8 | 2518 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2519 | } |
c906108c SS |
2520 | } |
2521 | ||
1dd5fedc | 2522 | static void |
fba45db2 | 2523 | all_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
2524 | { |
2525 | registers_info (addr_exp, 1); | |
2526 | } | |
2527 | ||
a58dd373 | 2528 | static void |
fba45db2 | 2529 | nofp_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
2530 | { |
2531 | registers_info (addr_exp, 0); | |
2532 | } | |
e76f1f2e AC |
2533 | |
2534 | static void | |
d80b854b | 2535 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2536 | struct frame_info *frame, const char *args) |
2537 | { | |
d80b854b UW |
2538 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2539 | ||
e76f1f2e AC |
2540 | if (gdbarch_print_vector_info_p (gdbarch)) |
2541 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2542 | else | |
2543 | { | |
2544 | int regnum; | |
2545 | int printed_something = 0; | |
ab4327e0 | 2546 | |
f57d151a | 2547 | for (regnum = 0; |
a4bd449d UW |
2548 | regnum < gdbarch_num_regs (gdbarch) |
2549 | + gdbarch_num_pseudo_regs (gdbarch); | |
f57d151a | 2550 | regnum++) |
e76f1f2e | 2551 | { |
f9418c0f | 2552 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2553 | { |
2554 | printed_something = 1; | |
e76f1f2e | 2555 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2556 | } |
2557 | } | |
2558 | if (!printed_something) | |
2559 | fprintf_filtered (file, "No vector information\n"); | |
2560 | } | |
2561 | } | |
2562 | ||
2563 | static void | |
2564 | vector_info (char *args, int from_tty) | |
2565 | { | |
206415a3 DJ |
2566 | if (!target_has_registers) |
2567 | error (_("The program has no registers now.")); | |
2568 | ||
d80b854b | 2569 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2570 | } |
c906108c | 2571 | \f |
5fd62852 PA |
2572 | /* Kill the inferior process. Make us have no inferior. */ |
2573 | ||
2574 | static void | |
2575 | kill_command (char *arg, int from_tty) | |
2576 | { | |
2577 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2578 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2579 | some targets don't have processes! */ |
5fd62852 PA |
2580 | |
2581 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2582 | error (_("The program is not being run.")); | |
2583 | if (!query (_("Kill the program being debugged? "))) | |
2584 | error (_("Not confirmed.")); | |
2585 | target_kill (); | |
2586 | ||
c35b1492 PA |
2587 | /* If we still have other inferiors to debug, then don't mess with |
2588 | with their threads. */ | |
2589 | if (!have_inferiors ()) | |
5fd62852 | 2590 | { |
1777feb0 | 2591 | init_thread_list (); /* Destroy thread info. */ |
5fd62852 PA |
2592 | |
2593 | /* Killing off the inferior can leave us with a core file. If | |
2594 | so, print the state we are left in. */ | |
2595 | if (target_has_stack) | |
2596 | { | |
2597 | printf_filtered (_("In %s,\n"), target_longname); | |
08d72866 | 2598 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
5fd62852 PA |
2599 | } |
2600 | } | |
2601 | bfd_cache_close_all (); | |
2602 | } | |
c5aa993b | 2603 | |
74531fed PA |
2604 | /* Used in `attach&' command. ARG is a point to an integer |
2605 | representing a process id. Proceed threads of this process iff | |
2606 | they stopped due to debugger request, and when they did, they | |
a493e3e2 | 2607 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads |
74531fed PA |
2608 | that have been explicitly been told to stop. */ |
2609 | ||
2610 | static int | |
2611 | proceed_after_attach_callback (struct thread_info *thread, | |
2612 | void *arg) | |
2613 | { | |
2614 | int pid = * (int *) arg; | |
2615 | ||
2616 | if (ptid_get_pid (thread->ptid) == pid | |
2617 | && !is_exited (thread->ptid) | |
2618 | && !is_executing (thread->ptid) | |
2619 | && !thread->stop_requested | |
a493e3e2 | 2620 | && thread->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed PA |
2621 | { |
2622 | switch_to_thread (thread->ptid); | |
70509625 | 2623 | clear_proceed_status (0); |
64ce06e4 | 2624 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2625 | } |
2626 | ||
2627 | return 0; | |
2628 | } | |
2629 | ||
2630 | static void | |
2631 | proceed_after_attach (int pid) | |
2632 | { | |
2633 | /* Don't error out if the current thread is running, because | |
2634 | there may be other stopped threads. */ | |
2635 | struct cleanup *old_chain; | |
2636 | ||
2637 | /* Backup current thread and selected frame. */ | |
2638 | old_chain = make_cleanup_restore_current_thread (); | |
2639 | ||
2640 | iterate_over_threads (proceed_after_attach_callback, &pid); | |
2641 | ||
2642 | /* Restore selected ptid. */ | |
2643 | do_cleanups (old_chain); | |
2644 | } | |
2645 | ||
6efcd9a8 | 2646 | /* See inferior.h. */ |
c906108c | 2647 | |
6efcd9a8 PA |
2648 | void |
2649 | setup_inferior (int from_tty) | |
9356cf8d | 2650 | { |
d6b48e9c | 2651 | struct inferior *inferior; |
9356cf8d | 2652 | |
d6b48e9c | 2653 | inferior = current_inferior (); |
6efcd9a8 | 2654 | inferior->needs_setup = 0; |
9356cf8d PA |
2655 | |
2656 | /* If no exec file is yet known, try to determine it from the | |
2657 | process itself. */ | |
a10de604 GB |
2658 | if (get_exec_file (0) == NULL) |
2659 | exec_file_locate_attach (ptid_get_pid (inferior_ptid), from_tty); | |
9356cf8d PA |
2660 | else |
2661 | { | |
2662 | reopen_exec_file (); | |
2663 | reread_symbols (); | |
2664 | } | |
2665 | ||
2666 | /* Take any necessary post-attaching actions for this platform. */ | |
dfd4cc63 | 2667 | target_post_attach (ptid_get_pid (inferior_ptid)); |
9356cf8d PA |
2668 | |
2669 | post_create_inferior (¤t_target, from_tty); | |
6efcd9a8 PA |
2670 | } |
2671 | ||
2672 | /* What to do after the first program stops after attaching. */ | |
2673 | enum attach_post_wait_mode | |
2674 | { | |
2675 | /* Do nothing. Leaves threads as they are. */ | |
2676 | ATTACH_POST_WAIT_NOTHING, | |
2677 | ||
2678 | /* Re-resume threads that are marked running. */ | |
2679 | ATTACH_POST_WAIT_RESUME, | |
2680 | ||
2681 | /* Stop all threads. */ | |
2682 | ATTACH_POST_WAIT_STOP, | |
2683 | }; | |
2684 | ||
2685 | /* Called after we've attached to a process and we've seen it stop for | |
2686 | the first time. If ASYNC_EXEC is true, re-resume threads that | |
2687 | should be running. Else if ATTACH, */ | |
2688 | ||
2689 | static void | |
2690 | attach_post_wait (char *args, int from_tty, enum attach_post_wait_mode mode) | |
2691 | { | |
2692 | struct inferior *inferior; | |
9356cf8d | 2693 | |
6efcd9a8 PA |
2694 | inferior = current_inferior (); |
2695 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2696 | ||
2697 | if (inferior->needs_setup) | |
2698 | setup_inferior (from_tty); | |
2699 | ||
2700 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2701 | { |
2702 | /* The user requested an `attach&', so be sure to leave threads | |
2703 | that didn't get a signal running. */ | |
2704 | ||
2705 | /* Immediatelly resume all suspended threads of this inferior, | |
2706 | and this inferior only. This should have no effect on | |
2707 | already running threads. If a thread has been stopped with a | |
2708 | signal, leave it be. */ | |
2709 | if (non_stop) | |
2710 | proceed_after_attach (inferior->pid); | |
2711 | else | |
2712 | { | |
a493e3e2 | 2713 | if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed | 2714 | { |
70509625 | 2715 | clear_proceed_status (0); |
64ce06e4 | 2716 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2717 | } |
2718 | } | |
2719 | } | |
6efcd9a8 | 2720 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2721 | { |
74531fed PA |
2722 | /* The user requested a plain `attach', so be sure to leave |
2723 | the inferior stopped. */ | |
2724 | ||
74531fed PA |
2725 | /* At least the current thread is already stopped. */ |
2726 | ||
2727 | /* In all-stop, by definition, all threads have to be already | |
2728 | stopped at this point. In non-stop, however, although the | |
2729 | selected thread is stopped, others may still be executing. | |
2730 | Be sure to explicitly stop all threads of the process. This | |
2731 | should have no effect on already stopped threads. */ | |
066f6b6e | 2732 | if (non_stop) |
74531fed | 2733 | target_stop (pid_to_ptid (inferior->pid)); |
066f6b6e PA |
2734 | else if (target_is_non_stop_p ()) |
2735 | { | |
2736 | struct thread_info *thread; | |
2737 | struct thread_info *lowest = inferior_thread (); | |
2738 | int pid = current_inferior ()->pid; | |
2739 | ||
2740 | stop_all_threads (); | |
2741 | ||
2742 | /* It's not defined which thread will report the attach | |
2743 | stop. For consistency, always select the thread with | |
2744 | lowest GDB number, which should be the main thread, if it | |
2745 | still exists. */ | |
2746 | ALL_NON_EXITED_THREADS (thread) | |
2747 | { | |
2748 | if (ptid_get_pid (thread->ptid) == pid) | |
2749 | { | |
5d5658a1 PA |
2750 | if (thread->inf->num < lowest->inf->num |
2751 | || thread->per_inf_num < lowest->per_inf_num) | |
066f6b6e PA |
2752 | lowest = thread; |
2753 | } | |
2754 | } | |
2755 | ||
2756 | switch_to_thread (lowest->ptid); | |
2757 | } | |
74531fed PA |
2758 | |
2759 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2760 | normal_stop (); |
2761 | if (deprecated_attach_hook) | |
2762 | deprecated_attach_hook (); | |
2763 | } | |
2764 | } | |
2765 | ||
bfec99b2 | 2766 | struct attach_command_continuation_args |
9356cf8d PA |
2767 | { |
2768 | char *args; | |
2769 | int from_tty; | |
6efcd9a8 | 2770 | enum attach_post_wait_mode mode; |
bfec99b2 | 2771 | }; |
9356cf8d | 2772 | |
bfec99b2 | 2773 | static void |
fa4cd53f | 2774 | attach_command_continuation (void *args, int err) |
bfec99b2 | 2775 | { |
9a3c8263 SM |
2776 | struct attach_command_continuation_args *a |
2777 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2778 | |
fa4cd53f PA |
2779 | if (err) |
2780 | return; | |
2781 | ||
6efcd9a8 | 2782 | attach_post_wait (a->args, a->from_tty, a->mode); |
9356cf8d PA |
2783 | } |
2784 | ||
604ead4a PA |
2785 | static void |
2786 | attach_command_continuation_free_args (void *args) | |
2787 | { | |
9a3c8263 SM |
2788 | struct attach_command_continuation_args *a |
2789 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2790 | |
604ead4a PA |
2791 | xfree (a->args); |
2792 | xfree (a); | |
2793 | } | |
2794 | ||
6efcd9a8 PA |
2795 | /* "attach" command entry point. Takes a program started up outside |
2796 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2797 | and allows us to start debugging it. */ | |
2798 | ||
c906108c | 2799 | void |
fba45db2 | 2800 | attach_command (char *args, int from_tty) |
c906108c | 2801 | { |
6c4486e6 PA |
2802 | int async_exec; |
2803 | struct cleanup *args_chain; | |
b3ccfe11 | 2804 | struct target_ops *attach_target; |
6efcd9a8 PA |
2805 | struct inferior *inferior = current_inferior (); |
2806 | enum attach_post_wait_mode mode; | |
c906108c | 2807 | |
c5aa993b | 2808 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2809 | |
f5656ead | 2810 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2811 | /* Don't complain if all processes share the same symbol |
2812 | space. */ | |
8a305172 PA |
2813 | ; |
2814 | else if (target_has_execution) | |
c906108c | 2815 | { |
9e2f0ad4 | 2816 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2817 | target_kill (); |
2818 | else | |
8a3fe4f8 | 2819 | error (_("Not killed.")); |
c906108c SS |
2820 | } |
2821 | ||
fd79ecee DJ |
2822 | /* Clean up any leftovers from other runs. Some other things from |
2823 | this function should probably be moved into target_pre_inferior. */ | |
2824 | target_pre_inferior (from_tty); | |
2825 | ||
6c4486e6 PA |
2826 | args = strip_bg_char (args, &async_exec); |
2827 | args_chain = make_cleanup (xfree, args); | |
8bc2fe48 | 2828 | |
b3ccfe11 TT |
2829 | attach_target = find_attach_target (); |
2830 | ||
8bc2fe48 PA |
2831 | prepare_execution_command (attach_target, async_exec); |
2832 | ||
b3ccfe11 | 2833 | if (non_stop && !attach_target->to_supports_non_stop (attach_target)) |
9908b566 VP |
2834 | error (_("Cannot attach to this target in non-stop mode")); |
2835 | ||
b3ccfe11 TT |
2836 | attach_target->to_attach (attach_target, args, from_tty); |
2837 | /* to_attach should push the target, so after this point we | |
2838 | shouldn't refer to attach_target again. */ | |
2839 | attach_target = NULL; | |
c906108c SS |
2840 | |
2841 | /* Set up the "saved terminal modes" of the inferior | |
2842 | based on what modes we are starting it with. */ | |
2843 | target_terminal_init (); | |
2844 | ||
7180e04a PA |
2845 | /* Install inferior's terminal modes. This may look like a no-op, |
2846 | as we've just saved them above, however, this does more than | |
2847 | restore terminal settings: | |
2848 | ||
2849 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2850 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2851 | stop would end up as a spurious Quit. | |
2852 | ||
2853 | - removes stdin from the event loop, which we need if attaching | |
2854 | in the foreground, otherwise on targets that report an initial | |
2855 | stop on attach (which are most) we'd process input/commands | |
2856 | while we're in the event loop waiting for that stop. That is, | |
2857 | before the attach continuation runs and the command is really | |
2858 | finished. */ | |
2859 | target_terminal_inferior (); | |
2860 | ||
c906108c SS |
2861 | /* Set up execution context to know that we should return from |
2862 | wait_for_inferior as soon as the target reports a stop. */ | |
2863 | init_wait_for_inferior (); | |
70509625 | 2864 | clear_proceed_status (0); |
c906108c | 2865 | |
6efcd9a8 PA |
2866 | inferior->needs_setup = 1; |
2867 | ||
fbea99ea | 2868 | if (target_is_non_stop_p ()) |
74531fed PA |
2869 | { |
2870 | /* If we find that the current thread isn't stopped, explicitly | |
2871 | do so now, because we're going to install breakpoints and | |
2872 | poke at memory. */ | |
2873 | ||
2874 | if (async_exec) | |
2875 | /* The user requested an `attach&'; stop just one thread. */ | |
2876 | target_stop (inferior_ptid); | |
2877 | else | |
2878 | /* The user requested an `attach', so stop all threads of this | |
2879 | inferior. */ | |
2880 | target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid))); | |
2881 | } | |
2882 | ||
6efcd9a8 PA |
2883 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2884 | ||
dc177b7a PA |
2885 | /* Some system don't generate traps when attaching to inferior. |
2886 | E.g. Mach 3 or GNU hurd. */ | |
2887 | if (!target_attach_no_wait) | |
c5aa993b | 2888 | { |
0b333c5e | 2889 | struct attach_command_continuation_args *a; |
d6b48e9c | 2890 | |
1777feb0 | 2891 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2892 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2893 | need a way for handle_inferior_event to reset the stop_signal | |
2894 | variable after an attach, and this is what | |
2895 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2896 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2897 | |
3b12939d | 2898 | /* Wait for stop. */ |
0b333c5e PA |
2899 | a = XNEW (struct attach_command_continuation_args); |
2900 | a->args = xstrdup (args); | |
2901 | a->from_tty = from_tty; | |
6efcd9a8 | 2902 | a->mode = mode; |
0b333c5e PA |
2903 | add_inferior_continuation (attach_command_continuation, a, |
2904 | attach_command_continuation_free_args); | |
2905 | /* Done with ARGS. */ | |
2906 | do_cleanups (args_chain); | |
2907 | ||
2908 | if (!target_is_async_p ()) | |
2909 | mark_infrun_async_event_handler (); | |
2910 | return; | |
dc177b7a | 2911 | } |
6426a772 | 2912 | |
978b9495 JK |
2913 | /* Done with ARGS. */ |
2914 | do_cleanups (args_chain); | |
2915 | ||
6efcd9a8 | 2916 | attach_post_wait (args, from_tty, mode); |
c906108c SS |
2917 | } |
2918 | ||
1941c569 PA |
2919 | /* We had just found out that the target was already attached to an |
2920 | inferior. PTID points at a thread of this new inferior, that is | |
2921 | the most likely to be stopped right now, but not necessarily so. | |
2922 | The new inferior is assumed to be already added to the inferior | |
2923 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2924 | this inferior running, except those we've explicitly seen reported | |
2925 | as stopped. */ | |
2926 | ||
2927 | void | |
2928 | notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) | |
2929 | { | |
2930 | struct cleanup* old_chain; | |
6efcd9a8 | 2931 | enum attach_post_wait_mode mode; |
1941c569 PA |
2932 | |
2933 | old_chain = make_cleanup (null_cleanup, NULL); | |
2934 | ||
0d5b594f | 2935 | mode = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; |
1941c569 PA |
2936 | |
2937 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2938 | make_cleanup_restore_current_thread (); | |
2939 | ||
6efcd9a8 PA |
2940 | /* Avoid reading registers -- we haven't fetched the target |
2941 | description yet. */ | |
2942 | switch_to_thread_no_regs (find_thread_ptid (ptid)); | |
1941c569 PA |
2943 | |
2944 | /* When we "notice" a new inferior we need to do all the things we | |
2945 | would normally do if we had just attached to it. */ | |
2946 | ||
2947 | if (is_executing (inferior_ptid)) | |
2948 | { | |
0b333c5e | 2949 | struct attach_command_continuation_args *a; |
1941c569 PA |
2950 | struct inferior *inferior = current_inferior (); |
2951 | ||
2952 | /* We're going to install breakpoints, and poke at memory, | |
2953 | ensure that the inferior is stopped for a moment while we do | |
2954 | that. */ | |
2955 | target_stop (inferior_ptid); | |
2956 | ||
16c381f0 | 2957 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2958 | |
2959 | /* Wait for stop before proceeding. */ | |
0b333c5e PA |
2960 | a = XNEW (struct attach_command_continuation_args); |
2961 | a->args = xstrdup (""); | |
2962 | a->from_tty = from_tty; | |
6efcd9a8 | 2963 | a->mode = mode; |
0b333c5e PA |
2964 | add_inferior_continuation (attach_command_continuation, a, |
2965 | attach_command_continuation_free_args); | |
1941c569 | 2966 | |
0b333c5e PA |
2967 | do_cleanups (old_chain); |
2968 | return; | |
1941c569 PA |
2969 | } |
2970 | ||
6efcd9a8 | 2971 | attach_post_wait ("" /* args */, from_tty, mode); |
1941c569 PA |
2972 | |
2973 | do_cleanups (old_chain); | |
2974 | } | |
2975 | ||
c906108c SS |
2976 | /* |
2977 | * detach_command -- | |
2978 | * takes a program previously attached to and detaches it. | |
2979 | * The program resumes execution and will no longer stop | |
2980 | * on signals, etc. We better not have left any breakpoints | |
2981 | * in the program or it'll die when it hits one. For this | |
2982 | * to work, it may be necessary for the process to have been | |
2983 | * previously attached. It *might* work if the program was | |
2984 | * started via the normal ptrace (PTRACE_TRACEME). | |
2985 | */ | |
2986 | ||
6418d433 | 2987 | void |
fba45db2 | 2988 | detach_command (char *args, int from_tty) |
c906108c | 2989 | { |
1f5d0fc9 | 2990 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a PA |
2991 | |
2992 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2993 | error (_("The program is not being run.")); | |
2994 | ||
2f9d54cf PA |
2995 | query_if_trace_running (from_tty); |
2996 | ||
2997 | disconnect_tracing (); | |
d5551862 | 2998 | |
c906108c | 2999 | target_detach (args, from_tty); |
50c71eaf | 3000 | |
63000888 PA |
3001 | /* The current inferior process was just detached successfully. Get |
3002 | rid of breakpoints that no longer make sense. Note we don't do | |
3003 | this within target_detach because that is also used when | |
3004 | following child forks, and in that case we will want to transfer | |
3005 | breakpoints to the child, not delete them. */ | |
3006 | breakpoint_init_inferior (inf_exited); | |
3007 | ||
50c71eaf PA |
3008 | /* If the solist is global across inferiors, don't clear it when we |
3009 | detach from a single inferior. */ | |
f5656ead | 3010 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 3011 | no_shared_libraries (NULL, from_tty); |
8a305172 | 3012 | |
c35b1492 PA |
3013 | /* If we still have inferiors to debug, then don't mess with their |
3014 | threads. */ | |
3015 | if (!have_inferiors ()) | |
8a305172 PA |
3016 | init_thread_list (); |
3017 | ||
9a4105ab AC |
3018 | if (deprecated_detach_hook) |
3019 | deprecated_detach_hook (); | |
c906108c SS |
3020 | } |
3021 | ||
6ad8ae5c DJ |
3022 | /* Disconnect from the current target without resuming it (leaving it |
3023 | waiting for a debugger). | |
3024 | ||
3025 | We'd better not have left any breakpoints in the program or the | |
3026 | next debugger will get confused. Currently only supported for some | |
3027 | remote targets, since the normal attach mechanisms don't work on | |
3028 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
3029 | ||
3030 | static void | |
3031 | disconnect_command (char *args, int from_tty) | |
3032 | { | |
1777feb0 | 3033 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
3034 | query_if_trace_running (from_tty); |
3035 | disconnect_tracing (); | |
6ad8ae5c | 3036 | target_disconnect (args, from_tty); |
e85a822c | 3037 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 3038 | init_thread_list (); |
9a4105ab AC |
3039 | if (deprecated_detach_hook) |
3040 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
3041 | } |
3042 | ||
77ebaa5a VP |
3043 | void |
3044 | interrupt_target_1 (int all_threads) | |
3045 | { | |
3046 | ptid_t ptid; | |
abbb1732 | 3047 | |
77ebaa5a VP |
3048 | if (all_threads) |
3049 | ptid = minus_one_ptid; | |
3050 | else | |
3051 | ptid = inferior_ptid; | |
e42de8c7 PA |
3052 | |
3053 | if (non_stop) | |
3054 | target_stop (ptid); | |
3055 | else | |
3056 | target_interrupt (ptid); | |
252fbfc8 PA |
3057 | |
3058 | /* Tag the thread as having been explicitly requested to stop, so | |
3059 | other parts of gdb know not to resume this thread automatically, | |
3060 | if it was stopped due to an internal event. Limit this to | |
3061 | non-stop mode, as when debugging a multi-threaded application in | |
3062 | all-stop mode, we will only get one stop event --- it's undefined | |
3063 | which thread will report the event. */ | |
3064 | if (non_stop) | |
3065 | set_stop_requested (ptid, 1); | |
77ebaa5a VP |
3066 | } |
3067 | ||
6339bfc4 DE |
3068 | /* interrupt [-a] |
3069 | Stop the execution of the target while running in async mode, in | |
8cae4b3f PA |
3070 | the backgound. In all-stop, stop the whole process. In non-stop |
3071 | mode, stop the current thread only by default, or stop all threads | |
3072 | if the `-a' switch is used. */ | |
3073 | ||
1dd5fedc | 3074 | static void |
0a07590b | 3075 | interrupt_command (char *args, int from_tty) |
43ff13b4 | 3076 | { |
362646f5 | 3077 | if (target_can_async_p ()) |
43ff13b4 | 3078 | { |
8cae4b3f PA |
3079 | int all_threads = 0; |
3080 | ||
1777feb0 | 3081 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 3082 | |
8cae4b3f | 3083 | if (args != NULL |
61012eef | 3084 | && startswith (args, "-a")) |
8cae4b3f PA |
3085 | all_threads = 1; |
3086 | ||
3087 | if (!non_stop && all_threads) | |
3088 | error (_("-a is meaningless in all-stop mode.")); | |
3089 | ||
77ebaa5a | 3090 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
3091 | } |
3092 | } | |
3093 | ||
cc86d1cb YQ |
3094 | /* See inferior.h. */ |
3095 | ||
3096 | void | |
3097 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
3098 | struct frame_info *frame, const char *args) | |
c906108c | 3099 | { |
cc86d1cb YQ |
3100 | int regnum; |
3101 | int printed_something = 0; | |
d80b854b | 3102 | |
cc86d1cb YQ |
3103 | for (regnum = 0; |
3104 | regnum < gdbarch_num_regs (gdbarch) | |
3105 | + gdbarch_num_pseudo_regs (gdbarch); | |
3106 | regnum++) | |
23e3a7ac | 3107 | { |
cc86d1cb | 3108 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 3109 | { |
cc86d1cb YQ |
3110 | printed_something = 1; |
3111 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 3112 | } |
23e3a7ac | 3113 | } |
cc86d1cb YQ |
3114 | if (!printed_something) |
3115 | fprintf_filtered (file, "No floating-point info " | |
3116 | "available for this processor.\n"); | |
23e3a7ac AC |
3117 | } |
3118 | ||
3119 | static void | |
3120 | float_info (char *args, int from_tty) | |
3121 | { | |
cc86d1cb YQ |
3122 | struct frame_info *frame; |
3123 | ||
206415a3 DJ |
3124 | if (!target_has_registers) |
3125 | error (_("The program has no registers now.")); | |
3126 | ||
cc86d1cb YQ |
3127 | frame = get_selected_frame (NULL); |
3128 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
3129 | } |
3130 | \f | |
c906108c | 3131 | static void |
fba45db2 | 3132 | unset_command (char *args, int from_tty) |
c906108c | 3133 | { |
3e43a32a MS |
3134 | printf_filtered (_("\"unset\" must be followed by the " |
3135 | "name of an unset subcommand.\n")); | |
635c7e8a | 3136 | help_list (unsetlist, "unset ", all_commands, gdb_stdout); |
c906108c SS |
3137 | } |
3138 | ||
145b16a9 UW |
3139 | /* Implement `info proc' family of commands. */ |
3140 | ||
3141 | static void | |
3142 | info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty) | |
3143 | { | |
3030c96e UW |
3144 | struct gdbarch *gdbarch = get_current_arch (); |
3145 | ||
451b7c33 TT |
3146 | if (!target_info_proc (args, what)) |
3147 | { | |
3148 | if (gdbarch_info_proc_p (gdbarch)) | |
3149 | gdbarch_info_proc (gdbarch, args, what); | |
3150 | else | |
3151 | error (_("Not supported on this target.")); | |
3152 | } | |
145b16a9 UW |
3153 | } |
3154 | ||
3155 | /* Implement `info proc' when given without any futher parameters. */ | |
3156 | ||
3157 | static void | |
3158 | info_proc_cmd (char *args, int from_tty) | |
3159 | { | |
3160 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
3161 | } | |
3162 | ||
3163 | /* Implement `info proc mappings'. */ | |
3164 | ||
3165 | static void | |
3166 | info_proc_cmd_mappings (char *args, int from_tty) | |
3167 | { | |
3168 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
3169 | } | |
3170 | ||
3171 | /* Implement `info proc stat'. */ | |
3172 | ||
3173 | static void | |
3174 | info_proc_cmd_stat (char *args, int from_tty) | |
3175 | { | |
3176 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
3177 | } | |
3178 | ||
3179 | /* Implement `info proc status'. */ | |
3180 | ||
3181 | static void | |
3182 | info_proc_cmd_status (char *args, int from_tty) | |
3183 | { | |
3184 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
3185 | } | |
3186 | ||
3187 | /* Implement `info proc cwd'. */ | |
3188 | ||
3189 | static void | |
3190 | info_proc_cmd_cwd (char *args, int from_tty) | |
3191 | { | |
3192 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
3193 | } | |
3194 | ||
3195 | /* Implement `info proc cmdline'. */ | |
3196 | ||
3197 | static void | |
3198 | info_proc_cmd_cmdline (char *args, int from_tty) | |
3199 | { | |
3200 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
3201 | } | |
3202 | ||
3203 | /* Implement `info proc exe'. */ | |
3204 | ||
3205 | static void | |
3206 | info_proc_cmd_exe (char *args, int from_tty) | |
3207 | { | |
3208 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
3209 | } | |
3210 | ||
3211 | /* Implement `info proc all'. */ | |
3212 | ||
3213 | static void | |
3214 | info_proc_cmd_all (char *args, int from_tty) | |
3215 | { | |
3216 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
3217 | } | |
3218 | ||
c906108c | 3219 | void |
fba45db2 | 3220 | _initialize_infcmd (void) |
c906108c | 3221 | { |
145b16a9 | 3222 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3223 | struct cmd_list_element *c = NULL; |
6f937416 | 3224 | const char *cmd_name; |
3cb3b8df | 3225 | |
1777feb0 | 3226 | /* Add the filename of the terminal connected to inferior I/O. */ |
3cb3b8df | 3227 | add_setshow_filename_cmd ("inferior-tty", class_run, |
3f81c18a | 3228 | &inferior_io_terminal_scratch, _("\ |
3cb3b8df BR |
3229 | Set terminal for future runs of program being debugged."), _("\ |
3230 | Show terminal for future runs of program being debugged."), _("\ | |
3f81c18a VP |
3231 | Usage: set inferior-tty /dev/pts/1"), |
3232 | set_inferior_tty_command, | |
3233 | show_inferior_tty_command, | |
3234 | &setlist, &showlist); | |
3cb3b8df | 3235 | add_com_alias ("tty", "set inferior-tty", class_alias, 0); |
c906108c | 3236 | |
6ace3df1 YQ |
3237 | cmd_name = "args"; |
3238 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3239 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3240 | Set argument list to give program being debugged when it is started."), _("\ |
3241 | Show argument list to give program being debugged when it is started."), _("\ | |
3242 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3243 | set_args_command, |
3244 | show_args_command, | |
3245 | &setlist, &showlist); | |
3246 | c = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
3247 | gdb_assert (c != NULL); | |
3248 | set_cmd_completer (c, filename_completer); | |
c906108c | 3249 | |
1a966eab AC |
3250 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3251 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3252 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3253 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3254 | environment to be given to the program."), &showlist); |
5ba2abeb | 3255 | set_cmd_completer (c, noop_completer); |
c906108c SS |
3256 | |
3257 | add_prefix_cmd ("unset", no_class, unset_command, | |
1bedd215 | 3258 | _("Complement to certain \"set\" commands."), |
c906108c | 3259 | &unsetlist, "unset ", 0, &cmdlist); |
c5aa993b | 3260 | |
1a966eab AC |
3261 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3262 | Cancel environment variable VAR for the program.\n\ | |
3263 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3264 | &unsetlist); |
5ba2abeb | 3265 | set_cmd_completer (c, noop_completer); |
c906108c | 3266 | |
1a966eab AC |
3267 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3268 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3269 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3270 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3271 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3272 | &setlist); |
5ba2abeb | 3273 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3274 | |
1bedd215 AC |
3275 | c = add_com ("path", class_files, path_command, _("\ |
3276 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3277 | $cwd in the path means the current working directory.\n\ |
3278 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3279 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3280 | fully linked executable files and separately compiled object files as \ |
3281 | needed.")); | |
5ba2abeb | 3282 | set_cmd_completer (c, filename_completer); |
c906108c | 3283 | |
1a966eab AC |
3284 | c = add_cmd ("paths", no_class, path_info, _("\ |
3285 | Current search path for finding object files.\n\ | |
c906108c SS |
3286 | $cwd in the path means the current working directory.\n\ |
3287 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3288 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3289 | fully linked executable files and separately compiled object files as \ |
3290 | needed."), | |
c906108c | 3291 | &showlist); |
5ba2abeb | 3292 | set_cmd_completer (c, noop_completer); |
c906108c | 3293 | |
2277426b PA |
3294 | add_prefix_cmd ("kill", class_run, kill_command, |
3295 | _("Kill execution of program being debugged."), | |
3296 | &killlist, "kill ", 0, &cmdlist); | |
5fd62852 | 3297 | |
1bedd215 AC |
3298 | add_com ("attach", class_run, attach_command, _("\ |
3299 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3300 | This command attaches to another target, of the same type as your last\n\ |
3301 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3302 | The command may take as argument a process id or a device file.\n\ | |
3303 | For a process id, you must have permission to send the process a signal,\n\ | |
3304 | and it must have the same effective uid as the debugger.\n\ | |
3305 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3306 | program running in the process, looking first in the current working\n\ | |
3307 | directory, or (if not found there) using the source file search path\n\ | |
3308 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3309 | to specify the program, and to load its symbol table.")); |
c906108c | 3310 | |
f73adfeb | 3311 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3312 | Detach a process or file previously attached.\n\ |
c906108c | 3313 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb AS |
3314 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
3315 | &detachlist, "detach ", 0, &cmdlist); | |
c906108c | 3316 | |
1bedd215 AC |
3317 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3318 | Disconnect from a target.\n\ | |
6ad8ae5c | 3319 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3320 | all targets.")); |
6ad8ae5c | 3321 | |
de0bea00 | 3322 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3323 | Continue program with the specified signal.\n\ |
3324 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3325 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3326 | \n\ |
3327 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3328 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3329 | and you want to resume the program while discarding the signal.\n\ |
3330 | \n\ | |
3331 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3332 | the current thread only.")); | |
3333 | set_cmd_completer (c, signal_completer); | |
3334 | ||
3335 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3336 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3337 | Usage: queue-signal SIGNAL\n\ | |
3338 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3339 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3340 | \n\ | |
3341 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3342 | the current thread. This is useful in cases where the program stopped\n\ | |
3343 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3344 | \n\ | |
3345 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3346 | the current thread only.")); | |
de0bea00 | 3347 | set_cmd_completer (c, signal_completer); |
c906108c | 3348 | |
1bedd215 AC |
3349 | add_com ("stepi", class_run, stepi_command, _("\ |
3350 | Step one instruction exactly.\n\ | |
486c7739 MF |
3351 | Usage: stepi [N]\n\ |
3352 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3353 | reason).")); |
c906108c SS |
3354 | add_com_alias ("si", "stepi", class_alias, 0); |
3355 | ||
1bedd215 AC |
3356 | add_com ("nexti", class_run, nexti_command, _("\ |
3357 | Step one instruction, but proceed through subroutine calls.\n\ | |
486c7739 MF |
3358 | Usage: nexti [N]\n\ |
3359 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3360 | reason).")); |
c906108c SS |
3361 | add_com_alias ("ni", "nexti", class_alias, 0); |
3362 | ||
1bedd215 AC |
3363 | add_com ("finish", class_run, finish_command, _("\ |
3364 | Execute until selected stack frame returns.\n\ | |
486c7739 | 3365 | Usage: finish\n\ |
1bedd215 | 3366 | Upon return, the value returned is printed and put in the value history.")); |
0e479716 | 3367 | add_com_alias ("fin", "finish", class_run, 1); |
c906108c | 3368 | |
1bedd215 AC |
3369 | add_com ("next", class_run, next_command, _("\ |
3370 | Step program, proceeding through subroutine calls.\n\ | |
486c7739 MF |
3371 | Usage: next [N]\n\ |
3372 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3373 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3374 | the call, in effect treating it as a single source line.")); |
c906108c | 3375 | add_com_alias ("n", "next", class_run, 1); |
c906108c | 3376 | |
1bedd215 AC |
3377 | add_com ("step", class_run, step_command, _("\ |
3378 | Step program until it reaches a different source line.\n\ | |
486c7739 MF |
3379 | Usage: step [N]\n\ |
3380 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3381 | reason).")); |
c906108c SS |
3382 | add_com_alias ("s", "step", class_run, 1); |
3383 | ||
1bedd215 AC |
3384 | c = add_com ("until", class_run, until_command, _("\ |
3385 | Execute until the program reaches a source line greater than the current\n\ | |
3e43a32a MS |
3386 | or a specified location (same args as break command) within the current \ |
3387 | frame.")); | |
5ba2abeb | 3388 | set_cmd_completer (c, location_completer); |
c906108c | 3389 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 3390 | |
1bedd215 | 3391 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3392 | Continue the program up to the given location (same form as args for break \ |
3393 | command).\n\ | |
1bedd215 | 3394 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3395 | set_cmd_completer (c, location_completer); |
3396 | ||
1bedd215 AC |
3397 | c = add_com ("jump", class_run, jump_command, _("\ |
3398 | Continue program being debugged at specified line or address.\n\ | |
486c7739 | 3399 | Usage: jump <location>\n\ |
c906108c | 3400 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3401 | for an address to start at.")); |
5ba2abeb | 3402 | set_cmd_completer (c, location_completer); |
c1d780c2 | 3403 | add_com_alias ("j", "jump", class_run, 1); |
c906108c | 3404 | |
df983543 | 3405 | add_com ("continue", class_run, continue_command, _("\ |
1bedd215 | 3406 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3407 | Usage: continue [N]\n\ |
c906108c SS |
3408 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3409 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3410 | the breakpoint won't break until the Nth time it is reached).\n\ |
3411 | \n\ | |
3412 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3413 | otherwise all the threads in the program are continued. To \n\ | |
3414 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3415 | Specifying -a and an ignore count simultaneously is an error.")); | |
c906108c SS |
3416 | add_com_alias ("c", "cont", class_run, 1); |
3417 | add_com_alias ("fg", "cont", class_run, 1); | |
3418 | ||
1bedd215 AC |
3419 | c = add_com ("run", class_run, run_command, _("\ |
3420 | Start debugged program. You may specify arguments to give it.\n\ | |
c906108c | 3421 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ |
3e43a32a MS |
3422 | Input and output redirection with \">\", \"<\", or \">>\" are also \ |
3423 | allowed.\n\n\ | |
3424 | With no arguments, uses arguments last specified (with \"run\" \ | |
3425 | or \"set args\").\n\ | |
c906108c | 3426 | To cancel previous arguments and run with no arguments,\n\ |
1bedd215 | 3427 | use \"set args\" without arguments.")); |
5ba2abeb | 3428 | set_cmd_completer (c, filename_completer); |
c906108c | 3429 | add_com_alias ("r", "run", class_run, 1); |
c906108c | 3430 | |
1bedd215 | 3431 | c = add_com ("start", class_run, start_command, _("\ |
a4d5f2e0 JB |
3432 | Run the debugged program until the beginning of the main procedure.\n\ |
3433 | You may specify arguments to give to your program, just as with the\n\ | |
1bedd215 | 3434 | \"run\" command.")); |
a4d5f2e0 JB |
3435 | set_cmd_completer (c, filename_completer); |
3436 | ||
0a07590b | 3437 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3438 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3439 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3440 | otherwise all the threads in the program are stopped. To \n\ | |
3441 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3442 | |
71c24708 | 3443 | c = add_info ("registers", nofp_registers_info, _("\ |
1bedd215 AC |
3444 | List of integer registers and their contents, for selected stack frame.\n\ |
3445 | Register name as argument means describe only that register.")); | |
7194c49b | 3446 | add_info_alias ("r", "registers", 1); |
71c24708 | 3447 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3448 | |
71c24708 | 3449 | c = add_info ("all-registers", all_registers_info, _("\ |
1bedd215 AC |
3450 | List of all registers and their contents, for selected stack frame.\n\ |
3451 | Register name as argument means describe only that register.")); | |
71c24708 | 3452 | set_cmd_completer (c, reg_or_group_completer); |
c906108c SS |
3453 | |
3454 | add_info ("program", program_info, | |
1bedd215 | 3455 | _("Execution status of the program.")); |
c906108c SS |
3456 | |
3457 | add_info ("float", float_info, | |
1bedd215 | 3458 | _("Print the status of the floating point unit\n")); |
c906108c | 3459 | |
e76f1f2e | 3460 | add_info ("vector", vector_info, |
1bedd215 | 3461 | _("Print the status of the vector unit\n")); |
145b16a9 UW |
3462 | |
3463 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3464 | _("\ | |
3465 | Show /proc process information about any running process.\n\ | |
3466 | Specify any process id, or use the program being debugged by default."), | |
3467 | &info_proc_cmdlist, "info proc ", | |
3468 | 1/*allow-unknown*/, &infolist); | |
3469 | ||
3470 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
3471 | List of mapped memory regions."), | |
3472 | &info_proc_cmdlist); | |
3473 | ||
3474 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3475 | List process info from /proc/PID/stat."), | |
3476 | &info_proc_cmdlist); | |
3477 | ||
3478 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3479 | List process info from /proc/PID/status."), | |
3480 | &info_proc_cmdlist); | |
3481 | ||
3482 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
3483 | List current working directory of the process."), | |
3484 | &info_proc_cmdlist); | |
3485 | ||
3486 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
3487 | List command line arguments of the process."), | |
3488 | &info_proc_cmdlist); | |
3489 | ||
3490 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
3491 | List absolute filename for executable of the process."), | |
3492 | &info_proc_cmdlist); | |
3493 | ||
3494 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ | |
3495 | List all available /proc info."), | |
3496 | &info_proc_cmdlist); | |
c906108c | 3497 | } |