Commit | Line | Data |
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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 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 | 153 | xfree (current_inferior ()->terminal); |
0a1ddfa6 SM |
154 | |
155 | if (terminal_name != NULL && *terminal_name != '\0') | |
156 | current_inferior ()->terminal = xstrdup (terminal_name); | |
157 | else | |
158 | current_inferior ()->terminal = NULL; | |
3cb3b8df BR |
159 | } |
160 | ||
161 | const char * | |
162 | get_inferior_io_terminal (void) | |
163 | { | |
3f81c18a VP |
164 | return current_inferior ()->terminal; |
165 | } | |
166 | ||
167 | static void | |
168 | set_inferior_tty_command (char *args, int from_tty, | |
169 | struct cmd_list_element *c) | |
170 | { | |
171 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
172 | Now route it to current inferior. */ | |
173 | set_inferior_io_terminal (inferior_io_terminal_scratch); | |
174 | } | |
175 | ||
176 | static void | |
177 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
178 | struct cmd_list_element *c, const char *value) | |
179 | { | |
180 | /* Note that we ignore the passed-in value in favor of computing it | |
181 | directly. */ | |
275f2e57 | 182 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
abbb1732 | 183 | |
275f2e57 DJ |
184 | if (inferior_io_terminal == NULL) |
185 | inferior_io_terminal = ""; | |
3f81c18a | 186 | fprintf_filtered (gdb_stdout, |
275f2e57 DJ |
187 | _("Terminal for future runs of program being debugged " |
188 | "is \"%s\".\n"), inferior_io_terminal); | |
3cb3b8df BR |
189 | } |
190 | ||
07091751 FN |
191 | char * |
192 | get_inferior_args (void) | |
193 | { | |
3f81c18a | 194 | if (current_inferior ()->argc != 0) |
552c04a7 | 195 | { |
3f81c18a | 196 | char *n; |
552c04a7 | 197 | |
3f81c18a VP |
198 | n = construct_inferior_arguments (current_inferior ()->argc, |
199 | current_inferior ()->argv); | |
200 | set_inferior_args (n); | |
201 | xfree (n); | |
552c04a7 TT |
202 | } |
203 | ||
3f81c18a VP |
204 | if (current_inferior ()->args == NULL) |
205 | current_inferior ()->args = xstrdup (""); | |
552c04a7 | 206 | |
3f81c18a | 207 | return current_inferior ()->args; |
07091751 FN |
208 | } |
209 | ||
3f81c18a VP |
210 | /* Set the arguments for the current inferior. Ownership of |
211 | NEWARGS is not transferred. */ | |
212 | ||
213 | void | |
07091751 FN |
214 | set_inferior_args (char *newargs) |
215 | { | |
3f81c18a VP |
216 | xfree (current_inferior ()->args); |
217 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; | |
218 | current_inferior ()->argc = 0; | |
219 | current_inferior ()->argv = 0; | |
07091751 | 220 | } |
c5aa993b | 221 | |
552c04a7 TT |
222 | void |
223 | set_inferior_args_vector (int argc, char **argv) | |
224 | { | |
3f81c18a VP |
225 | current_inferior ()->argc = argc; |
226 | current_inferior ()->argv = argv; | |
552c04a7 TT |
227 | } |
228 | ||
229 | /* Notice when `set args' is run. */ | |
6339bfc4 | 230 | |
552c04a7 | 231 | static void |
3f81c18a | 232 | set_args_command (char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 233 | { |
3f81c18a VP |
234 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
235 | Now route it to current inferior. */ | |
236 | set_inferior_args (inferior_args_scratch); | |
552c04a7 TT |
237 | } |
238 | ||
239 | /* Notice when `show args' is run. */ | |
6339bfc4 | 240 | |
552c04a7 | 241 | static void |
3f81c18a VP |
242 | show_args_command (struct ui_file *file, int from_tty, |
243 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 244 | { |
258c00cc TT |
245 | /* Note that we ignore the passed-in value in favor of computing it |
246 | directly. */ | |
247 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
552c04a7 TT |
248 | } |
249 | ||
c2a727fa TT |
250 | \f |
251 | /* Compute command-line string given argument vector. This does the | |
252 | same shell processing as fork_inferior. */ | |
6339bfc4 | 253 | |
c2a727fa | 254 | char * |
bd57a748 | 255 | construct_inferior_arguments (int argc, char **argv) |
c2a727fa TT |
256 | { |
257 | char *result; | |
258 | ||
98882a26 | 259 | if (startup_with_shell) |
c2a727fa | 260 | { |
5d60742e EZ |
261 | #ifdef __MINGW32__ |
262 | /* This holds all the characters considered special to the | |
263 | Windows shells. */ | |
a121b7c1 PA |
264 | static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n"; |
265 | static const char quote = '"'; | |
5d60742e | 266 | #else |
c2a727fa TT |
267 | /* This holds all the characters considered special to the |
268 | typical Unix shells. We include `^' because the SunOS | |
269 | /bin/sh treats it as a synonym for `|'. */ | |
a121b7c1 PA |
270 | static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n"; |
271 | static const char quote = '\''; | |
5d60742e | 272 | #endif |
c2a727fa TT |
273 | int i; |
274 | int length = 0; | |
275 | char *out, *cp; | |
276 | ||
277 | /* We over-compute the size. It shouldn't matter. */ | |
278 | for (i = 0; i < argc; ++i) | |
c2226152 | 279 | length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0'); |
c2a727fa TT |
280 | |
281 | result = (char *) xmalloc (length); | |
282 | out = result; | |
283 | ||
284 | for (i = 0; i < argc; ++i) | |
285 | { | |
286 | if (i > 0) | |
287 | *out++ = ' '; | |
288 | ||
03c6228e AS |
289 | /* Need to handle empty arguments specially. */ |
290 | if (argv[i][0] == '\0') | |
c2a727fa | 291 | { |
5d60742e EZ |
292 | *out++ = quote; |
293 | *out++ = quote; | |
03c6228e AS |
294 | } |
295 | else | |
296 | { | |
5d60742e EZ |
297 | #ifdef __MINGW32__ |
298 | int quoted = 0; | |
299 | ||
300 | if (strpbrk (argv[i], special)) | |
301 | { | |
302 | quoted = 1; | |
303 | *out++ = quote; | |
304 | } | |
305 | #endif | |
03c6228e AS |
306 | for (cp = argv[i]; *cp; ++cp) |
307 | { | |
c2226152 AS |
308 | if (*cp == '\n') |
309 | { | |
310 | /* A newline cannot be quoted with a backslash (it | |
311 | just disappears), only by putting it inside | |
312 | quotes. */ | |
5d60742e | 313 | *out++ = quote; |
c2226152 | 314 | *out++ = '\n'; |
5d60742e | 315 | *out++ = quote; |
c2226152 AS |
316 | } |
317 | else | |
318 | { | |
5d60742e EZ |
319 | #ifdef __MINGW32__ |
320 | if (*cp == quote) | |
321 | #else | |
c2226152 | 322 | if (strchr (special, *cp) != NULL) |
5d60742e | 323 | #endif |
c2226152 AS |
324 | *out++ = '\\'; |
325 | *out++ = *cp; | |
326 | } | |
03c6228e | 327 | } |
5d60742e EZ |
328 | #ifdef __MINGW32__ |
329 | if (quoted) | |
330 | *out++ = quote; | |
331 | #endif | |
c2a727fa TT |
332 | } |
333 | } | |
334 | *out = '\0'; | |
335 | } | |
336 | else | |
337 | { | |
338 | /* In this case we can't handle arguments that contain spaces, | |
339 | tabs, or newlines -- see breakup_args(). */ | |
340 | int i; | |
341 | int length = 0; | |
342 | ||
343 | for (i = 0; i < argc; ++i) | |
344 | { | |
345 | char *cp = strchr (argv[i], ' '); | |
346 | if (cp == NULL) | |
347 | cp = strchr (argv[i], '\t'); | |
348 | if (cp == NULL) | |
349 | cp = strchr (argv[i], '\n'); | |
350 | if (cp != NULL) | |
3e43a32a MS |
351 | error (_("can't handle command-line " |
352 | "argument containing whitespace")); | |
c2a727fa TT |
353 | length += strlen (argv[i]) + 1; |
354 | } | |
355 | ||
356 | result = (char *) xmalloc (length); | |
357 | result[0] = '\0'; | |
358 | for (i = 0; i < argc; ++i) | |
359 | { | |
360 | if (i > 0) | |
361 | strcat (result, " "); | |
362 | strcat (result, argv[i]); | |
363 | } | |
364 | } | |
365 | ||
366 | return result; | |
367 | } | |
552c04a7 TT |
368 | \f |
369 | ||
6c4486e6 PA |
370 | /* This function strips the '&' character (indicating background |
371 | execution) that is added as *the last* of the arguments ARGS of a | |
372 | command. A copy of the incoming ARGS without the '&' is returned, | |
373 | unless the resulting string after stripping is empty, in which case | |
374 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
375 | whether the '&' character was found. */ | |
6339bfc4 | 376 | |
6c4486e6 PA |
377 | static char * |
378 | strip_bg_char (const char *args, int *bg_char_p) | |
43ff13b4 | 379 | { |
6c4486e6 | 380 | const char *p; |
c5aa993b | 381 | |
6c4486e6 PA |
382 | if (args == NULL || *args == '\0') |
383 | { | |
384 | *bg_char_p = 0; | |
385 | return NULL; | |
386 | } | |
c5aa993b | 387 | |
6c4486e6 PA |
388 | p = args + strlen (args); |
389 | if (p[-1] == '&') | |
43ff13b4 | 390 | { |
6c4486e6 PA |
391 | p--; |
392 | while (p > args && isspace (p[-1])) | |
393 | p--; | |
394 | ||
395 | *bg_char_p = 1; | |
396 | if (p != args) | |
397 | return savestring (args, p - args); | |
398 | else | |
399 | return NULL; | |
43ff13b4 | 400 | } |
6c4486e6 PA |
401 | |
402 | *bg_char_p = 0; | |
403 | return xstrdup (args); | |
43ff13b4 JM |
404 | } |
405 | ||
281b533b DJ |
406 | /* Common actions to take after creating any sort of inferior, by any |
407 | means (running, attaching, connecting, et cetera). The target | |
408 | should be stopped. */ | |
409 | ||
410 | void | |
411 | post_create_inferior (struct target_ops *target, int from_tty) | |
412 | { | |
ce406537 | 413 | |
b79599ff | 414 | /* Be sure we own the terminal in case write operations are performed. */ |
f8e3ef9d | 415 | target_terminal_ours_for_output (); |
b79599ff | 416 | |
424163ea DJ |
417 | /* If the target hasn't taken care of this already, do it now. |
418 | Targets which need to access registers during to_open, | |
419 | to_create_inferior, or to_attach should do it earlier; but many | |
420 | don't need to. */ | |
421 | target_find_description (); | |
422 | ||
ce406537 PA |
423 | /* Now that we know the register layout, retrieve current PC. But |
424 | if the PC is unavailable (e.g., we're opening a core file with | |
425 | missing registers info), ignore it. */ | |
426 | stop_pc = 0; | |
492d29ea | 427 | TRY |
ce406537 PA |
428 | { |
429 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
430 | } | |
492d29ea | 431 | CATCH (ex, RETURN_MASK_ERROR) |
7556d4a4 PA |
432 | { |
433 | if (ex.error != NOT_AVAILABLE_ERROR) | |
434 | throw_exception (ex); | |
435 | } | |
492d29ea | 436 | END_CATCH |
f698437e | 437 | |
50c71eaf PA |
438 | if (exec_bfd) |
439 | { | |
2eff07b3 PP |
440 | const unsigned solib_add_generation |
441 | = current_program_space->solib_add_generation; | |
442 | ||
9353355f DJ |
443 | /* Create the hooks to handle shared library load and unload |
444 | events. */ | |
268a4a75 | 445 | solib_create_inferior_hook (from_tty); |
268a4a75 | 446 | |
2eff07b3 PP |
447 | if (current_program_space->solib_add_generation == solib_add_generation) |
448 | { | |
449 | /* The platform-specific hook should load initial shared libraries, | |
450 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
451 | targets should be fixed anyway. Call it only after the solib | |
452 | target has been initialized by solib_create_inferior_hook. */ | |
453 | ||
454 | if (info_verbose) | |
455 | warning (_("platform-specific solib_create_inferior_hook did " | |
456 | "not load initial shared libraries.")); | |
457 | ||
458 | /* If the solist is global across processes, there's no need to | |
459 | refetch it here. */ | |
f5656ead | 460 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 461 | solib_add (NULL, 0, auto_solib_add); |
2eff07b3 | 462 | } |
9353355f DJ |
463 | } |
464 | ||
ea5d7a99 PM |
465 | /* If the user sets watchpoints before execution having started, |
466 | then she gets software watchpoints, because GDB can't know which | |
467 | target will end up being pushed, or if it supports hardware | |
468 | watchpoints or not. breakpoint_re_set takes care of promoting | |
469 | watchpoints to hardware watchpoints if possible, however, if this | |
470 | new inferior doesn't load shared libraries or we don't pull in | |
471 | symbols from any other source on this target/arch, | |
472 | breakpoint_re_set is never called. Call it now so that software | |
473 | watchpoints get a chance to be promoted to hardware watchpoints | |
474 | if the now pushed target supports hardware watchpoints. */ | |
475 | breakpoint_re_set (); | |
476 | ||
281b533b DJ |
477 | observer_notify_inferior_created (target, from_tty); |
478 | } | |
479 | ||
a4d5f2e0 JB |
480 | /* Kill the inferior if already running. This function is designed |
481 | to be called when we are about to start the execution of the program | |
482 | from the beginning. Ask the user to confirm that he wants to restart | |
483 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 484 | |
8edfe269 | 485 | static void |
a4d5f2e0 JB |
486 | kill_if_already_running (int from_tty) |
487 | { | |
39f77062 | 488 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
c906108c | 489 | { |
8edfe269 DJ |
490 | /* Bail out before killing the program if we will not be able to |
491 | restart it. */ | |
492 | target_require_runnable (); | |
493 | ||
adf40b2e | 494 | if (from_tty |
9e2f0ad4 HZ |
495 | && !query (_("The program being debugged has been started already.\n\ |
496 | Start it from the beginning? "))) | |
8a3fe4f8 | 497 | error (_("Program not restarted.")); |
c906108c | 498 | target_kill (); |
c906108c | 499 | } |
a4d5f2e0 JB |
500 | } |
501 | ||
329ea579 | 502 | /* See inferior.h. */ |
8bc2fe48 | 503 | |
329ea579 | 504 | void |
8bc2fe48 PA |
505 | prepare_execution_command (struct target_ops *target, int background) |
506 | { | |
507 | /* If we get a request for running in the bg but the target | |
508 | doesn't support it, error out. */ | |
509 | if (background && !target->to_can_async_p (target)) | |
510 | error (_("Asynchronous execution not supported on this target.")); | |
511 | ||
0b333c5e | 512 | if (!background) |
8bc2fe48 | 513 | { |
0b333c5e PA |
514 | /* If we get a request for running in the fg, then we need to |
515 | simulate synchronous (fg) execution. Note no cleanup is | |
516 | necessary for this. stdin is re-enabled whenever an error | |
517 | reaches the top level. */ | |
a8836c93 | 518 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
519 | } |
520 | } | |
521 | ||
1777feb0 | 522 | /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert |
f67a969f JB |
523 | a temporary breakpoint at the begining of the main program before |
524 | running the program. */ | |
525 | ||
a4d5f2e0 | 526 | static void |
f67a969f | 527 | run_command_1 (char *args, int from_tty, int tbreak_at_main) |
a4d5f2e0 JB |
528 | { |
529 | char *exec_file; | |
29f49a6a PA |
530 | struct cleanup *old_chain; |
531 | ptid_t ptid; | |
79a45e25 | 532 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 533 | struct target_ops *run_target; |
6c4486e6 PA |
534 | int async_exec; |
535 | struct cleanup *args_chain; | |
c906108c | 536 | |
a4d5f2e0 JB |
537 | dont_repeat (); |
538 | ||
539 | kill_if_already_running (from_tty); | |
3c35e65b UW |
540 | |
541 | init_wait_for_inferior (); | |
c906108c SS |
542 | clear_breakpoint_hit_counts (); |
543 | ||
fd79ecee DJ |
544 | /* Clean up any leftovers from other runs. Some other things from |
545 | this function should probably be moved into target_pre_inferior. */ | |
546 | target_pre_inferior (from_tty); | |
547 | ||
39ad761d JB |
548 | /* The comment here used to read, "The exec file is re-read every |
549 | time we do a generic_mourn_inferior, so we just have to worry | |
550 | about the symbol file." The `generic_mourn_inferior' function | |
551 | gets called whenever the program exits. However, suppose the | |
552 | program exits, and *then* the executable file changes? We need | |
553 | to check again here. Since reopen_exec_file doesn't do anything | |
554 | if the timestamp hasn't changed, I don't see the harm. */ | |
555 | reopen_exec_file (); | |
c906108c SS |
556 | reread_symbols (); |
557 | ||
6c4486e6 PA |
558 | args = strip_bg_char (args, &async_exec); |
559 | args_chain = make_cleanup (xfree, args); | |
f67a969f | 560 | |
8bc2fe48 PA |
561 | /* Do validation and preparation before possibly changing anything |
562 | in the inferior. */ | |
39ad761d | 563 | |
b3ccfe11 TT |
564 | run_target = find_run_target (); |
565 | ||
8bc2fe48 PA |
566 | prepare_execution_command (run_target, async_exec); |
567 | ||
b3ccfe11 | 568 | if (non_stop && !run_target->to_supports_non_stop (run_target)) |
9908b566 VP |
569 | error (_("The target does not support running in non-stop mode.")); |
570 | ||
8bc2fe48 PA |
571 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
572 | ||
573 | /* Insert the temporary breakpoint if a location was specified. */ | |
574 | if (tbreak_at_main) | |
575 | tbreak_command (main_name (), 0); | |
576 | ||
577 | exec_file = (char *) get_exec_file (0); | |
578 | ||
c906108c SS |
579 | /* We keep symbols from add-symbol-file, on the grounds that the |
580 | user might want to add some symbols before running the program | |
581 | (right?). But sometimes (dynamic loading where the user manually | |
582 | introduces the new symbols with add-symbol-file), the code which | |
583 | the symbols describe does not persist between runs. Currently | |
584 | the user has to manually nuke all symbols between runs if they | |
585 | want them to go away (PR 2207). This is probably reasonable. */ | |
586 | ||
8bc2fe48 PA |
587 | /* If there were other args, beside '&', process them. */ |
588 | if (args != NULL) | |
589 | set_inferior_args (args); | |
c906108c SS |
590 | |
591 | if (from_tty) | |
592 | { | |
112e8700 SM |
593 | uiout->field_string (NULL, "Starting program"); |
594 | uiout->text (": "); | |
8b93c638 | 595 | if (exec_file) |
112e8700 SM |
596 | uiout->field_string ("execfile", exec_file); |
597 | uiout->spaces (1); | |
552c04a7 TT |
598 | /* We call get_inferior_args() because we might need to compute |
599 | the value now. */ | |
112e8700 SM |
600 | uiout->field_string ("infargs", get_inferior_args ()); |
601 | uiout->text ("\n"); | |
602 | uiout->flush (); | |
c906108c SS |
603 | } |
604 | ||
6c4486e6 PA |
605 | /* Done with ARGS. */ |
606 | do_cleanups (args_chain); | |
607 | ||
552c04a7 TT |
608 | /* We call get_inferior_args() because we might need to compute |
609 | the value now. */ | |
b3ccfe11 TT |
610 | run_target->to_create_inferior (run_target, exec_file, get_inferior_args (), |
611 | environ_vector (current_inferior ()->environment), | |
612 | from_tty); | |
613 | /* to_create_inferior should push the target, so after this point we | |
614 | shouldn't refer to run_target again. */ | |
615 | run_target = NULL; | |
281b533b | 616 | |
29f49a6a PA |
617 | /* We're starting off a new process. When we get out of here, in |
618 | non-stop mode, finish the state of all threads of that process, | |
619 | but leave other threads alone, as they may be stopped in internal | |
620 | events --- the frontend shouldn't see them as stopped. In | |
621 | all-stop, always finish the state of all threads, as we may be | |
622 | resuming more than just the new process. */ | |
623 | if (non_stop) | |
624 | ptid = pid_to_ptid (ptid_get_pid (inferior_ptid)); | |
625 | else | |
626 | ptid = minus_one_ptid; | |
627 | old_chain = make_cleanup (finish_thread_state_cleanup, &ptid); | |
628 | ||
de1b3c3d PA |
629 | /* Pass zero for FROM_TTY, because at this point the "run" command |
630 | has done its thing; now we are setting up the running program. */ | |
631 | post_create_inferior (¤t_target, 0); | |
281b533b | 632 | |
74d1f91e JK |
633 | /* Start the target running. Do not use -1 continuation as it would skip |
634 | breakpoint right at the entry point. */ | |
64ce06e4 | 635 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 636 | |
29f49a6a PA |
637 | /* Since there was no error, there's no need to finish the thread |
638 | states here. */ | |
639 | discard_cleanups (old_chain); | |
640 | } | |
c906108c | 641 | |
f67a969f JB |
642 | static void |
643 | run_command (char *args, int from_tty) | |
644 | { | |
645 | run_command_1 (args, from_tty, 0); | |
646 | } | |
647 | ||
a4d5f2e0 JB |
648 | /* Start the execution of the program up until the beginning of the main |
649 | program. */ | |
650 | ||
651 | static void | |
652 | start_command (char *args, int from_tty) | |
653 | { | |
654 | /* Some languages such as Ada need to search inside the program | |
655 | minimal symbols for the location where to put the temporary | |
656 | breakpoint before starting. */ | |
657 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 658 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 659 | |
f67a969f JB |
660 | /* Run the program until reaching the main procedure... */ |
661 | run_command_1 (args, from_tty, 1); | |
a4d5f2e0 JB |
662 | } |
663 | ||
8cae4b3f PA |
664 | static int |
665 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
666 | { | |
74531fed PA |
667 | /* We go through all threads individually instead of compressing |
668 | into a single target `resume_all' request, because some threads | |
669 | may be stopped in internal breakpoints/events, or stopped waiting | |
670 | for its turn in the displaced stepping queue (that is, they are | |
671 | running && !executing). The target side has no idea about why | |
672 | the thread is stopped, so a `resume_all' command would resume too | |
673 | much. If/when GDB gains a way to tell the target `hold this | |
674 | thread stopped until I say otherwise', then we can optimize | |
675 | this. */ | |
4f8d22e3 | 676 | if (!is_stopped (thread->ptid)) |
8cae4b3f PA |
677 | return 0; |
678 | ||
dcf4fbde | 679 | switch_to_thread (thread->ptid); |
70509625 | 680 | clear_proceed_status (0); |
64ce06e4 | 681 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
682 | return 0; |
683 | } | |
684 | ||
70221824 | 685 | static void |
d729566a PA |
686 | ensure_valid_thread (void) |
687 | { | |
688 | if (ptid_equal (inferior_ptid, null_ptid) | |
689 | || is_exited (inferior_ptid)) | |
3e43a32a | 690 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
691 | } |
692 | ||
573cda03 | 693 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 694 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
695 | disallow those commands. */ |
696 | ||
70221824 | 697 | static void |
573cda03 SS |
698 | ensure_not_tfind_mode (void) |
699 | { | |
700 | if (get_traceframe_number () >= 0) | |
3e43a32a | 701 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
702 | } |
703 | ||
3d3fef6b YQ |
704 | /* Throw an error indicating the current thread is running. */ |
705 | ||
706 | static void | |
707 | error_is_running (void) | |
708 | { | |
709 | error (_("Cannot execute this command while " | |
710 | "the selected thread is running.")); | |
711 | } | |
712 | ||
713 | /* Calls error_is_running if the current thread is running. */ | |
714 | ||
715 | static void | |
716 | ensure_not_running (void) | |
717 | { | |
718 | if (is_running (inferior_ptid)) | |
719 | error_is_running (); | |
720 | } | |
721 | ||
77ebaa5a VP |
722 | void |
723 | continue_1 (int all_threads) | |
724 | { | |
3d488bfc | 725 | ERROR_NO_INFERIOR; |
573cda03 | 726 | ensure_not_tfind_mode (); |
3d488bfc | 727 | |
77ebaa5a VP |
728 | if (non_stop && all_threads) |
729 | { | |
730 | /* Don't error out if the current thread is running, because | |
abbb1732 | 731 | there may be other stopped threads. */ |
77ebaa5a VP |
732 | struct cleanup *old_chain; |
733 | ||
734 | /* Backup current thread and selected frame. */ | |
735 | old_chain = make_cleanup_restore_current_thread (); | |
736 | ||
737 | iterate_over_threads (proceed_thread_callback, NULL); | |
738 | ||
3b12939d | 739 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
740 | { |
741 | /* If all threads in the target were already running, | |
742 | proceed_thread_callback ends up never calling proceed, | |
743 | and so nothing calls this to put the inferior's terminal | |
744 | settings in effect and remove stdin from the event loop, | |
745 | which we must when running a foreground command. E.g.: | |
746 | ||
747 | (gdb) c -a& | |
748 | Continuing. | |
749 | <all threads are running now> | |
750 | (gdb) c -a | |
751 | Continuing. | |
752 | <no thread was resumed, but the inferior now owns the terminal> | |
753 | */ | |
754 | target_terminal_inferior (); | |
755 | } | |
756 | ||
77ebaa5a VP |
757 | /* Restore selected ptid. */ |
758 | do_cleanups (old_chain); | |
759 | } | |
760 | else | |
761 | { | |
d729566a | 762 | ensure_valid_thread (); |
77ebaa5a | 763 | ensure_not_running (); |
70509625 | 764 | clear_proceed_status (0); |
64ce06e4 | 765 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
766 | } |
767 | } | |
768 | ||
8cae4b3f | 769 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 770 | |
1dd5fedc | 771 | static void |
8cae4b3f | 772 | continue_command (char *args, int from_tty) |
c906108c | 773 | { |
6c4486e6 | 774 | int async_exec; |
8cae4b3f | 775 | int all_threads = 0; |
6c4486e6 PA |
776 | struct cleanup *args_chain; |
777 | ||
c906108c SS |
778 | ERROR_NO_INFERIOR; |
779 | ||
1777feb0 | 780 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
781 | args = strip_bg_char (args, &async_exec); |
782 | args_chain = make_cleanup (xfree, args); | |
43ff13b4 | 783 | |
8cae4b3f PA |
784 | if (args != NULL) |
785 | { | |
61012eef | 786 | if (startswith (args, "-a")) |
8cae4b3f PA |
787 | { |
788 | all_threads = 1; | |
789 | args += sizeof ("-a") - 1; | |
790 | if (*args == '\0') | |
791 | args = NULL; | |
792 | } | |
793 | } | |
794 | ||
795 | if (!non_stop && all_threads) | |
796 | error (_("`-a' is meaningless in all-stop mode.")); | |
797 | ||
798 | if (args != NULL && all_threads) | |
3e43a32a MS |
799 | error (_("Can't resume all threads and specify " |
800 | "proceed count simultaneously.")); | |
8cae4b3f PA |
801 | |
802 | /* If we have an argument left, set proceed count of breakpoint we | |
803 | stopped at. */ | |
804 | if (args != NULL) | |
c906108c | 805 | { |
347bddb7 | 806 | bpstat bs = NULL; |
8671a17b PA |
807 | int num, stat; |
808 | int stopped = 0; | |
347bddb7 PA |
809 | struct thread_info *tp; |
810 | ||
811 | if (non_stop) | |
e09875d4 | 812 | tp = find_thread_ptid (inferior_ptid); |
347bddb7 PA |
813 | else |
814 | { | |
815 | ptid_t last_ptid; | |
816 | struct target_waitstatus ws; | |
817 | ||
818 | get_last_target_status (&last_ptid, &ws); | |
e09875d4 | 819 | tp = find_thread_ptid (last_ptid); |
347bddb7 PA |
820 | } |
821 | if (tp != NULL) | |
16c381f0 | 822 | bs = tp->control.stop_bpstat; |
8671a17b PA |
823 | |
824 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
825 | if (stat > 0) | |
826 | { | |
827 | set_ignore_count (num, | |
8cae4b3f | 828 | parse_and_eval_long (args) - 1, |
8671a17b PA |
829 | from_tty); |
830 | /* set_ignore_count prints a message ending with a period. | |
831 | So print two spaces before "Continuing.". */ | |
832 | if (from_tty) | |
833 | printf_filtered (" "); | |
834 | stopped = 1; | |
835 | } | |
836 | ||
837 | if (!stopped && from_tty) | |
c906108c SS |
838 | { |
839 | printf_filtered | |
840 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
841 | } | |
c906108c SS |
842 | } |
843 | ||
6c4486e6 PA |
844 | /* Done with ARGS. */ |
845 | do_cleanups (args_chain); | |
846 | ||
3b12939d PA |
847 | ERROR_NO_INFERIOR; |
848 | ensure_not_tfind_mode (); | |
849 | ||
850 | if (!non_stop || !all_threads) | |
851 | { | |
852 | ensure_valid_thread (); | |
853 | ensure_not_running (); | |
854 | } | |
855 | ||
856 | prepare_execution_command (¤t_target, async_exec); | |
857 | ||
c906108c | 858 | if (from_tty) |
a3f17187 | 859 | printf_filtered (_("Continuing.\n")); |
c906108c | 860 | |
77ebaa5a | 861 | continue_1 (all_threads); |
c906108c SS |
862 | } |
863 | \f | |
edb3359d DJ |
864 | /* Record the starting point of a "step" or "next" command. */ |
865 | ||
866 | static void | |
867 | set_step_frame (void) | |
868 | { | |
869 | struct symtab_and_line sal; | |
64ce06e4 PA |
870 | CORE_ADDR pc; |
871 | struct frame_info *frame = get_current_frame (); | |
872 | struct thread_info *tp = inferior_thread (); | |
edb3359d | 873 | |
64ce06e4 PA |
874 | find_frame_sal (frame, &sal); |
875 | set_step_info (frame, sal); | |
876 | pc = get_frame_pc (frame); | |
877 | tp->control.step_start_function = find_pc_function (pc); | |
edb3359d DJ |
878 | } |
879 | ||
c906108c SS |
880 | /* Step until outside of current statement. */ |
881 | ||
c906108c | 882 | static void |
fba45db2 | 883 | step_command (char *count_string, int from_tty) |
c906108c SS |
884 | { |
885 | step_1 (0, 0, count_string); | |
886 | } | |
887 | ||
888 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
889 | ||
c906108c | 890 | static void |
fba45db2 | 891 | next_command (char *count_string, int from_tty) |
c906108c SS |
892 | { |
893 | step_1 (1, 0, count_string); | |
894 | } | |
895 | ||
896 | /* Likewise, but step only one instruction. */ | |
897 | ||
1dd5fedc | 898 | static void |
fba45db2 | 899 | stepi_command (char *count_string, int from_tty) |
c906108c SS |
900 | { |
901 | step_1 (0, 1, count_string); | |
902 | } | |
903 | ||
1dd5fedc | 904 | static void |
fba45db2 | 905 | nexti_command (char *count_string, int from_tty) |
c906108c SS |
906 | { |
907 | step_1 (1, 1, count_string); | |
908 | } | |
909 | ||
186c406b | 910 | void |
611c83ae | 911 | delete_longjmp_breakpoint_cleanup (void *arg) |
74b7792f | 912 | { |
611c83ae PA |
913 | int thread = * (int *) arg; |
914 | delete_longjmp_breakpoint (thread); | |
74b7792f AC |
915 | } |
916 | ||
243a9253 PA |
917 | /* Data for the FSM that manages the step/next/stepi/nexti |
918 | commands. */ | |
919 | ||
920 | struct step_command_fsm | |
921 | { | |
922 | /* The base class. */ | |
923 | struct thread_fsm thread_fsm; | |
924 | ||
925 | /* How many steps left in a "step N"-like command. */ | |
926 | int count; | |
927 | ||
928 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
929 | int skip_subroutines; | |
930 | ||
931 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
932 | int single_inst; | |
243a9253 PA |
933 | }; |
934 | ||
8980e177 PA |
935 | static void step_command_fsm_clean_up (struct thread_fsm *self, |
936 | struct thread_info *thread); | |
937 | static int step_command_fsm_should_stop (struct thread_fsm *self, | |
938 | struct thread_info *thread); | |
243a9253 PA |
939 | static enum async_reply_reason |
940 | step_command_fsm_async_reply_reason (struct thread_fsm *self); | |
941 | ||
942 | /* step_command_fsm's vtable. */ | |
943 | ||
944 | static struct thread_fsm_ops step_command_fsm_ops = | |
945 | { | |
946 | NULL, | |
947 | step_command_fsm_clean_up, | |
948 | step_command_fsm_should_stop, | |
949 | NULL, /* return_value */ | |
950 | step_command_fsm_async_reply_reason, | |
951 | }; | |
952 | ||
953 | /* Allocate a new step_command_fsm. */ | |
954 | ||
955 | static struct step_command_fsm * | |
8980e177 | 956 | new_step_command_fsm (struct interp *cmd_interp) |
243a9253 PA |
957 | { |
958 | struct step_command_fsm *sm; | |
959 | ||
960 | sm = XCNEW (struct step_command_fsm); | |
8980e177 | 961 | thread_fsm_ctor (&sm->thread_fsm, &step_command_fsm_ops, cmd_interp); |
243a9253 PA |
962 | |
963 | return sm; | |
964 | } | |
965 | ||
966 | /* Prepare for a step/next/etc. command. Any target resource | |
967 | allocated here is undone in the FSM's clean_up method. */ | |
968 | ||
969 | static void | |
970 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
971 | int skip_subroutines, int single_inst, | |
972 | int count, struct thread_info *thread) | |
973 | { | |
974 | sm->skip_subroutines = skip_subroutines; | |
975 | sm->single_inst = single_inst; | |
976 | sm->count = count; | |
243a9253 PA |
977 | |
978 | /* Leave the si command alone. */ | |
979 | if (!sm->single_inst || sm->skip_subroutines) | |
980 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
981 | ||
982 | thread->control.stepping_command = 1; | |
983 | } | |
984 | ||
985 | static int prepare_one_step (struct step_command_fsm *sm); | |
986 | ||
c906108c | 987 | static void |
fba45db2 | 988 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
c906108c | 989 | { |
243a9253 | 990 | int count; |
6c4486e6 | 991 | int async_exec; |
6c4486e6 | 992 | struct cleanup *args_chain; |
243a9253 PA |
993 | struct thread_info *thr; |
994 | struct step_command_fsm *step_sm; | |
c5aa993b | 995 | |
c906108c | 996 | ERROR_NO_INFERIOR; |
573cda03 | 997 | ensure_not_tfind_mode (); |
d729566a | 998 | ensure_valid_thread (); |
94cc34af | 999 | ensure_not_running (); |
43ff13b4 | 1000 | |
6c4486e6 PA |
1001 | count_string = strip_bg_char (count_string, &async_exec); |
1002 | args_chain = make_cleanup (xfree, count_string); | |
c5aa993b | 1003 | |
8bc2fe48 | 1004 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1005 | |
bb518678 | 1006 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 1007 | |
6c4486e6 PA |
1008 | /* Done with ARGS. */ |
1009 | do_cleanups (args_chain); | |
1010 | ||
243a9253 | 1011 | clear_proceed_status (1); |
611c83ae | 1012 | |
243a9253 PA |
1013 | /* Setup the execution command state machine to handle all the COUNT |
1014 | steps. */ | |
1015 | thr = inferior_thread (); | |
8980e177 | 1016 | step_sm = new_step_command_fsm (command_interp ()); |
243a9253 | 1017 | thr->thread_fsm = &step_sm->thread_fsm; |
611c83ae | 1018 | |
243a9253 PA |
1019 | step_command_fsm_prepare (step_sm, skip_subroutines, |
1020 | single_inst, count, thr); | |
c2d11a7d | 1021 | |
0b333c5e PA |
1022 | /* Do only one step for now, before returning control to the event |
1023 | loop. Let the continuation figure out how many other steps we | |
1024 | need to do, and handle them one at the time, through | |
1025 | step_once. */ | |
243a9253 PA |
1026 | if (!prepare_one_step (step_sm)) |
1027 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
1028 | else | |
1029 | { | |
3b12939d PA |
1030 | int proceeded; |
1031 | ||
243a9253 PA |
1032 | /* Stepped into an inline frame. Pretend that we've |
1033 | stopped. */ | |
8980e177 | 1034 | thread_fsm_clean_up (thr->thread_fsm, thr); |
3b12939d PA |
1035 | proceeded = normal_stop (); |
1036 | if (!proceeded) | |
1037 | inferior_event_handler (INF_EXEC_COMPLETE, NULL); | |
1038 | all_uis_check_sync_execution_done (); | |
243a9253 | 1039 | } |
c2d11a7d | 1040 | } |
c906108c | 1041 | |
243a9253 PA |
1042 | /* Implementation of the 'should_stop' FSM method for stepping |
1043 | commands. Called after we are done with one step operation, to | |
1044 | check whether we need to step again, before we print the prompt and | |
1045 | return control to the user. If count is > 1, returns false, as we | |
1046 | will need to keep going. */ | |
6339bfc4 | 1047 | |
243a9253 | 1048 | static int |
8980e177 | 1049 | step_command_fsm_should_stop (struct thread_fsm *self, struct thread_info *tp) |
c2d11a7d | 1050 | { |
243a9253 | 1051 | struct step_command_fsm *sm = (struct step_command_fsm *) self; |
f13468d9 | 1052 | |
243a9253 | 1053 | if (tp->control.stop_step) |
f13468d9 | 1054 | { |
243a9253 PA |
1055 | /* There are more steps to make, and we did stop due to |
1056 | ending a stepping range. Do another step. */ | |
1057 | if (--sm->count > 0) | |
1058 | return prepare_one_step (sm); | |
af679fd0 | 1059 | |
243a9253 | 1060 | thread_fsm_set_finished (self); |
f107f563 | 1061 | } |
af679fd0 | 1062 | |
243a9253 | 1063 | return 1; |
c2d11a7d JM |
1064 | } |
1065 | ||
243a9253 | 1066 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 PA |
1067 | |
1068 | static void | |
8980e177 | 1069 | step_command_fsm_clean_up (struct thread_fsm *self, struct thread_info *thread) |
bfec99b2 | 1070 | { |
243a9253 PA |
1071 | struct step_command_fsm *sm = (struct step_command_fsm *) self; |
1072 | ||
1073 | if (!sm->single_inst || sm->skip_subroutines) | |
8980e177 | 1074 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 PA |
1075 | } |
1076 | ||
1077 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
1078 | commands. */ | |
1079 | ||
1080 | static enum async_reply_reason | |
1081 | step_command_fsm_async_reply_reason (struct thread_fsm *self) | |
1082 | { | |
1083 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1084 | } | |
1085 | ||
1086 | /* Prepare for one step in "step N". The actual target resumption is | |
1087 | done by the caller. Return true if we're done and should thus | |
1088 | report a stop to the user. Returns false if the target needs to be | |
1089 | resumed. */ | |
c2d11a7d | 1090 | |
243a9253 PA |
1091 | static int |
1092 | prepare_one_step (struct step_command_fsm *sm) | |
1093 | { | |
1094 | if (sm->count > 0) | |
c906108c | 1095 | { |
243a9253 PA |
1096 | struct frame_info *frame = get_current_frame (); |
1097 | ||
4e1c45ea PA |
1098 | /* Don't assume THREAD is a valid thread id. It is set to -1 if |
1099 | the longjmp breakpoint was not required. Use the | |
1100 | INFERIOR_PTID thread instead, which is the same thread when | |
1101 | THREAD is set. */ | |
1102 | struct thread_info *tp = inferior_thread (); | |
abbb1732 | 1103 | |
edb3359d | 1104 | set_step_frame (); |
c906108c | 1105 | |
243a9253 | 1106 | if (!sm->single_inst) |
c906108c | 1107 | { |
1641cfcc PA |
1108 | CORE_ADDR pc; |
1109 | ||
edb3359d | 1110 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 1111 | if (!sm->skip_subroutines |
edb3359d DJ |
1112 | && inline_skipped_frames (inferior_ptid)) |
1113 | { | |
09cee04b PA |
1114 | ptid_t resume_ptid; |
1115 | ||
1116 | /* Pretend that we've ran. */ | |
1117 | resume_ptid = user_visible_resume_ptid (1); | |
1118 | set_running (resume_ptid, 1); | |
1119 | ||
edb3359d | 1120 | step_into_inline_frame (inferior_ptid); |
243a9253 PA |
1121 | sm->count--; |
1122 | return prepare_one_step (sm); | |
edb3359d DJ |
1123 | } |
1124 | ||
1641cfcc PA |
1125 | pc = get_frame_pc (frame); |
1126 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
1127 | &tp->control.step_range_start, |
1128 | &tp->control.step_range_end); | |
5fbbeb29 | 1129 | |
c1e36e3e PA |
1130 | tp->control.may_range_step = 1; |
1131 | ||
5fbbeb29 | 1132 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 1133 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
1134 | { |
1135 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1136 | tp->control.may_range_step = 0; | |
1137 | } | |
16c381f0 | 1138 | else if (tp->control.step_range_end == 0) |
c906108c | 1139 | { |
2c02bd72 | 1140 | const char *name; |
abbb1732 | 1141 | |
1641cfcc | 1142 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
1143 | &tp->control.step_range_start, |
1144 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 1145 | error (_("Cannot find bounds of current function")); |
c906108c | 1146 | |
f8e3ef9d | 1147 | target_terminal_ours_for_output (); |
3e43a32a MS |
1148 | printf_filtered (_("Single stepping until exit from function %s," |
1149 | "\nwhich has no line number information.\n"), | |
1150 | name); | |
c906108c SS |
1151 | } |
1152 | } | |
1153 | else | |
1154 | { | |
1155 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1156 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1157 | if (!sm->skip_subroutines) |
c906108c SS |
1158 | /* It is stepi. |
1159 | Don't step over function calls, not even to functions lacking | |
1160 | line numbers. */ | |
16c381f0 | 1161 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1162 | } |
1163 | ||
243a9253 | 1164 | if (sm->skip_subroutines) |
16c381f0 | 1165 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1166 | |
243a9253 | 1167 | return 0; |
c906108c | 1168 | } |
243a9253 PA |
1169 | |
1170 | /* Done. */ | |
1171 | thread_fsm_set_finished (&sm->thread_fsm); | |
1172 | return 1; | |
c906108c | 1173 | } |
c2d11a7d | 1174 | |
c906108c SS |
1175 | \f |
1176 | /* Continue program at specified address. */ | |
1177 | ||
1178 | static void | |
fba45db2 | 1179 | jump_command (char *arg, int from_tty) |
c906108c | 1180 | { |
5af949e3 | 1181 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1182 | CORE_ADDR addr; |
c906108c SS |
1183 | struct symtabs_and_lines sals; |
1184 | struct symtab_and_line sal; | |
1185 | struct symbol *fn; | |
1186 | struct symbol *sfn; | |
6c4486e6 PA |
1187 | int async_exec; |
1188 | struct cleanup *args_chain; | |
c5aa993b | 1189 | |
c906108c | 1190 | ERROR_NO_INFERIOR; |
573cda03 | 1191 | ensure_not_tfind_mode (); |
d729566a | 1192 | ensure_valid_thread (); |
94cc34af | 1193 | ensure_not_running (); |
c906108c | 1194 | |
1777feb0 | 1195 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1196 | arg = strip_bg_char (arg, &async_exec); |
1197 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1198 | |
8bc2fe48 | 1199 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1200 | |
c906108c | 1201 | if (!arg) |
e2e0b3e5 | 1202 | error_no_arg (_("starting address")); |
c906108c | 1203 | |
39cf75f7 | 1204 | sals = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); |
c906108c SS |
1205 | if (sals.nelts != 1) |
1206 | { | |
8a3fe4f8 | 1207 | error (_("Unreasonable jump request")); |
c906108c SS |
1208 | } |
1209 | ||
1210 | sal = sals.sals[0]; | |
b8c9b27d | 1211 | xfree (sals.sals); |
c906108c | 1212 | |
6c4486e6 PA |
1213 | /* Done with ARGS. */ |
1214 | do_cleanups (args_chain); | |
1215 | ||
c906108c | 1216 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1217 | error (_("No source file has been specified.")); |
c906108c | 1218 | |
1777feb0 | 1219 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1220 | |
1777feb0 | 1221 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1222 | fn = get_frame_function (get_current_frame ()); |
1223 | sfn = find_pc_function (sal.pc); | |
1224 | if (fn != NULL && sfn != fn) | |
1225 | { | |
9e2f0ad4 | 1226 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
de5ad195 | 1227 | SYMBOL_PRINT_NAME (fn))) |
c906108c | 1228 | { |
8a3fe4f8 | 1229 | error (_("Not confirmed.")); |
c906108c SS |
1230 | /* NOTREACHED */ |
1231 | } | |
1232 | } | |
1233 | ||
c5aa993b | 1234 | if (sfn != NULL) |
c906108c | 1235 | { |
253342b8 DE |
1236 | struct obj_section *section; |
1237 | ||
c906108c | 1238 | fixup_symbol_section (sfn, 0); |
08be3fe3 | 1239 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sfn), sfn); |
253342b8 DE |
1240 | if (section_is_overlay (section) |
1241 | && !section_is_mapped (section)) | |
c906108c | 1242 | { |
3e43a32a MS |
1243 | if (!query (_("WARNING!!! Destination is in " |
1244 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1245 | { |
8a3fe4f8 | 1246 | error (_("Not confirmed.")); |
c906108c SS |
1247 | /* NOTREACHED */ |
1248 | } | |
1249 | } | |
1250 | } | |
1251 | ||
c906108c SS |
1252 | addr = sal.pc; |
1253 | ||
1254 | if (from_tty) | |
1255 | { | |
a3f17187 | 1256 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1257 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1258 | printf_filtered (".\n"); |
1259 | } | |
1260 | ||
70509625 | 1261 | clear_proceed_status (0); |
64ce06e4 | 1262 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1263 | } |
c906108c | 1264 | \f |
c906108c SS |
1265 | /* Continue program giving it specified signal. */ |
1266 | ||
1267 | static void | |
fba45db2 | 1268 | signal_command (char *signum_exp, int from_tty) |
c906108c | 1269 | { |
2ea28649 | 1270 | enum gdb_signal oursig; |
6c4486e6 PA |
1271 | int async_exec; |
1272 | struct cleanup *args_chain; | |
c906108c SS |
1273 | |
1274 | dont_repeat (); /* Too dangerous. */ | |
1275 | ERROR_NO_INFERIOR; | |
573cda03 | 1276 | ensure_not_tfind_mode (); |
d729566a | 1277 | ensure_valid_thread (); |
94cc34af | 1278 | ensure_not_running (); |
c906108c | 1279 | |
32c1e744 | 1280 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1281 | signum_exp = strip_bg_char (signum_exp, &async_exec); |
1282 | args_chain = make_cleanup (xfree, signum_exp); | |
32c1e744 | 1283 | |
8bc2fe48 | 1284 | prepare_execution_command (¤t_target, async_exec); |
32c1e744 | 1285 | |
c906108c | 1286 | if (!signum_exp) |
e2e0b3e5 | 1287 | error_no_arg (_("signal number")); |
c906108c SS |
1288 | |
1289 | /* It would be even slicker to make signal names be valid expressions, | |
1290 | (the type could be "enum $signal" or some such), then the user could | |
1291 | assign them to convenience variables. */ | |
2ea28649 | 1292 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1293 | |
a493e3e2 | 1294 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1295 | { |
1296 | /* No, try numeric. */ | |
bb518678 | 1297 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1298 | |
1299 | if (num == 0) | |
a493e3e2 | 1300 | oursig = GDB_SIGNAL_0; |
c906108c | 1301 | else |
2ea28649 | 1302 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1303 | } |
1304 | ||
c6343a91 JK |
1305 | do_cleanups (args_chain); |
1306 | ||
70509625 PA |
1307 | /* Look for threads other than the current that this command ends up |
1308 | resuming too (due to schedlock off), and warn if they'll get a | |
1309 | signal delivered. "signal 0" is used to suppress a previous | |
1310 | signal, but if the current thread is no longer the one that got | |
1311 | the signal, then the user is potentially suppressing the signal | |
1312 | of the wrong thread. */ | |
1313 | if (!non_stop) | |
1314 | { | |
1315 | struct thread_info *tp; | |
1316 | ptid_t resume_ptid; | |
1317 | int must_confirm = 0; | |
1318 | ||
1319 | /* This indicates what will be resumed. Either a single thread, | |
1320 | a whole process, or all threads of all processes. */ | |
1321 | resume_ptid = user_visible_resume_ptid (0); | |
1322 | ||
1323 | ALL_NON_EXITED_THREADS (tp) | |
1324 | { | |
1325 | if (ptid_equal (tp->ptid, inferior_ptid)) | |
1326 | continue; | |
1327 | if (!ptid_match (tp->ptid, resume_ptid)) | |
1328 | continue; | |
1329 | ||
1330 | if (tp->suspend.stop_signal != GDB_SIGNAL_0 | |
1331 | && signal_pass_state (tp->suspend.stop_signal)) | |
1332 | { | |
1333 | if (!must_confirm) | |
1334 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1335 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1336 | print_thread_id (tp), | |
70509625 PA |
1337 | gdb_signal_to_name (tp->suspend.stop_signal), |
1338 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
1339 | must_confirm = 1; | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | if (must_confirm | |
43792cf0 | 1344 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1345 | "still deliver the signals noted above to their respective threads.\n" |
1346 | "Continue anyway? "), | |
43792cf0 | 1347 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1348 | error (_("Not confirmed.")); |
1349 | } | |
1350 | ||
c906108c SS |
1351 | if (from_tty) |
1352 | { | |
a493e3e2 | 1353 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1354 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1355 | else |
a3f17187 | 1356 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1357 | gdb_signal_to_name (oursig)); |
c906108c SS |
1358 | } |
1359 | ||
70509625 | 1360 | clear_proceed_status (0); |
64ce06e4 | 1361 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1362 | } |
1363 | ||
81219e53 DE |
1364 | /* Queue a signal to be delivered to the current thread. */ |
1365 | ||
1366 | static void | |
1367 | queue_signal_command (char *signum_exp, int from_tty) | |
1368 | { | |
1369 | enum gdb_signal oursig; | |
1370 | struct thread_info *tp; | |
1371 | ||
1372 | ERROR_NO_INFERIOR; | |
1373 | ensure_not_tfind_mode (); | |
1374 | ensure_valid_thread (); | |
1375 | ensure_not_running (); | |
1376 | ||
1377 | if (signum_exp == NULL) | |
1378 | error_no_arg (_("signal number")); | |
1379 | ||
1380 | /* It would be even slicker to make signal names be valid expressions, | |
1381 | (the type could be "enum $signal" or some such), then the user could | |
1382 | assign them to convenience variables. */ | |
1383 | oursig = gdb_signal_from_name (signum_exp); | |
1384 | ||
1385 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1386 | { | |
1387 | /* No, try numeric. */ | |
1388 | int num = parse_and_eval_long (signum_exp); | |
1389 | ||
1390 | if (num == 0) | |
1391 | oursig = GDB_SIGNAL_0; | |
1392 | else | |
1393 | oursig = gdb_signal_from_command (num); | |
1394 | } | |
1395 | ||
1396 | if (oursig != GDB_SIGNAL_0 | |
1397 | && !signal_pass_state (oursig)) | |
1398 | error (_("Signal handling set to not pass this signal to the program.")); | |
1399 | ||
1400 | tp = inferior_thread (); | |
1401 | tp->suspend.stop_signal = oursig; | |
1402 | } | |
1403 | ||
cfc31633 PA |
1404 | /* Data for the FSM that manages the until (with no argument) |
1405 | command. */ | |
1406 | ||
1407 | struct until_next_fsm | |
fa4cd53f | 1408 | { |
cfc31633 PA |
1409 | /* The base class. */ |
1410 | struct thread_fsm thread_fsm; | |
1411 | ||
1412 | /* The thread that as current when the command was executed. */ | |
fa4cd53f PA |
1413 | int thread; |
1414 | }; | |
1415 | ||
8980e177 PA |
1416 | static int until_next_fsm_should_stop (struct thread_fsm *self, |
1417 | struct thread_info *thread); | |
1418 | static void until_next_fsm_clean_up (struct thread_fsm *self, | |
1419 | struct thread_info *thread); | |
cfc31633 PA |
1420 | static enum async_reply_reason |
1421 | until_next_fsm_async_reply_reason (struct thread_fsm *self); | |
1422 | ||
1423 | /* until_next_fsm's vtable. */ | |
1424 | ||
1425 | static struct thread_fsm_ops until_next_fsm_ops = | |
1426 | { | |
1427 | NULL, /* dtor */ | |
1428 | until_next_fsm_clean_up, | |
1429 | until_next_fsm_should_stop, | |
1430 | NULL, /* return_value */ | |
1431 | until_next_fsm_async_reply_reason, | |
1432 | }; | |
1433 | ||
1434 | /* Allocate a new until_next_fsm. */ | |
1435 | ||
1436 | static struct until_next_fsm * | |
8980e177 | 1437 | new_until_next_fsm (struct interp *cmd_interp, int thread) |
cfc31633 PA |
1438 | { |
1439 | struct until_next_fsm *sm; | |
1440 | ||
1441 | sm = XCNEW (struct until_next_fsm); | |
8980e177 | 1442 | thread_fsm_ctor (&sm->thread_fsm, &until_next_fsm_ops, cmd_interp); |
cfc31633 PA |
1443 | |
1444 | sm->thread = thread; | |
1445 | ||
1446 | return sm; | |
1447 | } | |
1448 | ||
1449 | /* Implementation of the 'should_stop' FSM method for the until (with | |
1450 | no arg) command. */ | |
1451 | ||
1452 | static int | |
8980e177 PA |
1453 | until_next_fsm_should_stop (struct thread_fsm *self, |
1454 | struct thread_info *tp) | |
cfc31633 | 1455 | { |
cfc31633 PA |
1456 | if (tp->control.stop_step) |
1457 | thread_fsm_set_finished (self); | |
1458 | ||
1459 | return 1; | |
1460 | } | |
1461 | ||
1462 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1463 | arg) command. */ | |
186c406b TT |
1464 | |
1465 | static void | |
8980e177 | 1466 | until_next_fsm_clean_up (struct thread_fsm *self, struct thread_info *thread) |
186c406b | 1467 | { |
cfc31633 | 1468 | struct until_next_fsm *sm = (struct until_next_fsm *) self; |
186c406b | 1469 | |
8980e177 | 1470 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1471 | } |
1472 | ||
1473 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1474 | (with no arg) command. */ | |
1475 | ||
1476 | static enum async_reply_reason | |
1477 | until_next_fsm_async_reply_reason (struct thread_fsm *self) | |
1478 | { | |
1479 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1480 | } |
1481 | ||
c906108c SS |
1482 | /* Proceed until we reach a different source line with pc greater than |
1483 | our current one or exit the function. We skip calls in both cases. | |
1484 | ||
1485 | Note that eventually this command should probably be changed so | |
1486 | that only source lines are printed out when we hit the breakpoint | |
1487 | we set. This may involve changes to wait_for_inferior and the | |
1488 | proceed status code. */ | |
1489 | ||
c906108c | 1490 | static void |
fba45db2 | 1491 | until_next_command (int from_tty) |
c906108c SS |
1492 | { |
1493 | struct frame_info *frame; | |
1494 | CORE_ADDR pc; | |
1495 | struct symbol *func; | |
1496 | struct symtab_and_line sal; | |
4e1c45ea | 1497 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1498 | int thread = tp->global_num; |
186c406b | 1499 | struct cleanup *old_chain; |
cfc31633 | 1500 | struct until_next_fsm *sm; |
c5aa993b | 1501 | |
70509625 | 1502 | clear_proceed_status (0); |
edb3359d | 1503 | set_step_frame (); |
c906108c SS |
1504 | |
1505 | frame = get_current_frame (); | |
1506 | ||
1507 | /* Step until either exited from this function or greater | |
1508 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1509 | not). */ |
c906108c | 1510 | |
1c7819ef | 1511 | pc = get_frame_pc (frame); |
c906108c | 1512 | func = find_pc_function (pc); |
c5aa993b | 1513 | |
c906108c SS |
1514 | if (!func) |
1515 | { | |
7cbd4a93 | 1516 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1517 | |
7cbd4a93 | 1518 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1519 | error (_("Execution is not within a known function.")); |
c5aa993b | 1520 | |
77e371c0 | 1521 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1522 | /* The upper-bound of step_range is exclusive. In order to make PC |
1523 | within the range, set the step_range_end with PC + 1. */ | |
1524 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1525 | } |
1526 | else | |
1527 | { | |
1528 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1529 | |
16c381f0 JK |
1530 | tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
1531 | tp->control.step_range_end = sal.end; | |
c906108c | 1532 | } |
c1e36e3e | 1533 | tp->control.may_range_step = 1; |
c5aa993b | 1534 | |
16c381f0 | 1535 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1536 | |
186c406b TT |
1537 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
1538 | old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
1539 | ||
8980e177 | 1540 | sm = new_until_next_fsm (command_interp (), tp->global_num); |
cfc31633 PA |
1541 | tp->thread_fsm = &sm->thread_fsm; |
1542 | discard_cleanups (old_chain); | |
fa4cd53f | 1543 | |
cfc31633 | 1544 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1545 | } |
1546 | ||
c5aa993b | 1547 | static void |
fba45db2 | 1548 | until_command (char *arg, int from_tty) |
c906108c | 1549 | { |
6c4486e6 PA |
1550 | int async_exec; |
1551 | struct cleanup *args_chain; | |
43ff13b4 | 1552 | |
4247603b | 1553 | ERROR_NO_INFERIOR; |
573cda03 | 1554 | ensure_not_tfind_mode (); |
4247603b PA |
1555 | ensure_valid_thread (); |
1556 | ensure_not_running (); | |
573cda03 | 1557 | |
1777feb0 | 1558 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1559 | arg = strip_bg_char (arg, &async_exec); |
1560 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1561 | |
8bc2fe48 | 1562 | prepare_execution_command (¤t_target, async_exec); |
43ff13b4 | 1563 | |
c906108c | 1564 | if (arg) |
ae66c1fc | 1565 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1566 | else |
1567 | until_next_command (from_tty); | |
6c4486e6 PA |
1568 | |
1569 | /* Done with ARGS. */ | |
1570 | do_cleanups (args_chain); | |
c906108c | 1571 | } |
ae66c1fc EZ |
1572 | |
1573 | static void | |
1574 | advance_command (char *arg, int from_tty) | |
1575 | { | |
6c4486e6 PA |
1576 | int async_exec; |
1577 | struct cleanup *args_chain; | |
ae66c1fc | 1578 | |
4247603b | 1579 | ERROR_NO_INFERIOR; |
573cda03 | 1580 | ensure_not_tfind_mode (); |
4247603b PA |
1581 | ensure_valid_thread (); |
1582 | ensure_not_running (); | |
573cda03 | 1583 | |
ae66c1fc | 1584 | if (arg == NULL) |
e2e0b3e5 | 1585 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1586 | |
1587 | /* Find out whether we must run in the background. */ | |
6c4486e6 PA |
1588 | arg = strip_bg_char (arg, &async_exec); |
1589 | args_chain = make_cleanup (xfree, arg); | |
ae66c1fc | 1590 | |
8bc2fe48 | 1591 | prepare_execution_command (¤t_target, async_exec); |
ae66c1fc EZ |
1592 | |
1593 | until_break_command (arg, from_tty, 1); | |
6c4486e6 PA |
1594 | |
1595 | /* Done with ARGS. */ | |
1596 | do_cleanups (args_chain); | |
ae66c1fc | 1597 | } |
c906108c | 1598 | \f |
cc72b2a2 | 1599 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1600 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1601 | right after an inferior call has finished. */ | |
f941662f | 1602 | |
cc72b2a2 | 1603 | struct value * |
0700e23e | 1604 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1605 | { |
0700e23e | 1606 | struct regcache *stop_regs; |
cc72b2a2 | 1607 | struct gdbarch *gdbarch; |
44e5158b | 1608 | struct value *value; |
0700e23e | 1609 | struct cleanup *cleanup; |
cc72b2a2 | 1610 | |
0700e23e PA |
1611 | stop_regs = regcache_dup (get_current_regcache ()); |
1612 | cleanup = make_cleanup_regcache_xfree (stop_regs); | |
cc72b2a2 KP |
1613 | |
1614 | gdbarch = get_regcache_arch (stop_regs); | |
44e5158b | 1615 | |
f168693b | 1616 | value_type = check_typedef (value_type); |
44e5158b | 1617 | gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID); |
11cf8741 | 1618 | |
92ad9cd9 AC |
1619 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1620 | call, it's possible (with no help from the architecture vector) | |
1621 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1622 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1623 | inferior function call code. In fact, when inferior function |
1624 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1625 | |
6a3a010b | 1626 | switch (gdbarch_return_value (gdbarch, function, value_type, |
c055b101 | 1627 | NULL, NULL, NULL)) |
44e5158b | 1628 | { |
750eb019 AC |
1629 | case RETURN_VALUE_REGISTER_CONVENTION: |
1630 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1631 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1632 | value = allocate_value (value_type); |
6a3a010b | 1633 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
990a07ab | 1634 | value_contents_raw (value), NULL); |
750eb019 AC |
1635 | break; |
1636 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1637 | value = NULL; | |
1638 | break; | |
1639 | default: | |
e2e0b3e5 | 1640 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1641 | } |
bb472c1e | 1642 | |
cc72b2a2 KP |
1643 | do_cleanups (cleanup); |
1644 | ||
1645 | return value; | |
1646 | } | |
1647 | ||
243a9253 PA |
1648 | /* The captured function return value/type and its position in the |
1649 | value history. */ | |
cc72b2a2 | 1650 | |
243a9253 | 1651 | struct return_value_info |
cc72b2a2 | 1652 | { |
243a9253 PA |
1653 | /* The captured return value. May be NULL if we weren't able to |
1654 | retrieve it. See get_return_value. */ | |
1655 | struct value *value; | |
1656 | ||
1657 | /* The return type. In some cases, we'll not be able extract the | |
1658 | return value, but we always know the type. */ | |
1659 | struct type *type; | |
1660 | ||
1661 | /* If we captured a value, this is the value history index. */ | |
1662 | int value_history_index; | |
1663 | }; | |
1664 | ||
1665 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1666 | |
243a9253 PA |
1667 | static void |
1668 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1669 | { | |
1670 | if (rv->value != NULL) | |
31db7b6c | 1671 | { |
79a45b7d TT |
1672 | struct value_print_options opts; |
1673 | ||
31db7b6c | 1674 | /* Print it. */ |
112e8700 SM |
1675 | uiout->text ("Value returned is "); |
1676 | uiout->field_fmt ("gdb-result-var", "$%d", | |
d7e74731 | 1677 | rv->value_history_index); |
112e8700 | 1678 | uiout->text (" = "); |
2a998fc0 | 1679 | get_no_prettyformat_print_options (&opts); |
d7e74731 PA |
1680 | |
1681 | string_file stb; | |
1682 | ||
1683 | value_print (rv->value, &stb, &opts); | |
112e8700 SM |
1684 | uiout->field_stream ("return-value", stb); |
1685 | uiout->text ("\n"); | |
31db7b6c MK |
1686 | } |
1687 | else | |
1688 | { | |
2f408ecb | 1689 | std::string type_name = type_to_string (rv->type); |
112e8700 SM |
1690 | uiout->text ("Value returned has type: "); |
1691 | uiout->field_string ("return-type", type_name.c_str ()); | |
1692 | uiout->text ("."); | |
1693 | uiout->text (" Cannot determine contents\n"); | |
31db7b6c | 1694 | } |
11cf8741 JM |
1695 | } |
1696 | ||
243a9253 PA |
1697 | /* Print the result of a function at the end of a 'finish' command. |
1698 | RV points at an object representing the captured return value/type | |
1699 | and its position in the value history. */ | |
1700 | ||
1701 | void | |
1702 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1703 | { | |
1704 | if (rv->type == NULL || TYPE_CODE (rv->type) == TYPE_CODE_VOID) | |
1705 | return; | |
1706 | ||
1707 | TRY | |
1708 | { | |
1709 | /* print_return_value_1 can throw an exception in some | |
1710 | circumstances. We need to catch this so that we still | |
1711 | delete the breakpoint. */ | |
1712 | print_return_value_1 (uiout, rv); | |
1713 | } | |
1714 | CATCH (ex, RETURN_MASK_ALL) | |
1715 | { | |
1716 | exception_print (gdb_stdout, ex); | |
1717 | } | |
1718 | END_CATCH | |
1719 | } | |
1720 | ||
1721 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1722 | |
243a9253 | 1723 | struct finish_command_fsm |
43ff13b4 | 1724 | { |
243a9253 PA |
1725 | /* The base class. */ |
1726 | struct thread_fsm thread_fsm; | |
1727 | ||
243a9253 PA |
1728 | /* The momentary breakpoint set at the function's return address in |
1729 | the caller. */ | |
43ff13b4 | 1730 | struct breakpoint *breakpoint; |
243a9253 PA |
1731 | |
1732 | /* The function that we're stepping out of. */ | |
bfec99b2 | 1733 | struct symbol *function; |
8a6c4031 | 1734 | |
243a9253 PA |
1735 | /* If the FSM finishes successfully, this stores the function's |
1736 | return value. */ | |
1737 | struct return_value_info return_value; | |
bfec99b2 | 1738 | }; |
c5aa993b | 1739 | |
8980e177 PA |
1740 | static int finish_command_fsm_should_stop (struct thread_fsm *self, |
1741 | struct thread_info *thread); | |
1742 | static void finish_command_fsm_clean_up (struct thread_fsm *self, | |
1743 | struct thread_info *thread); | |
243a9253 PA |
1744 | static struct return_value_info * |
1745 | finish_command_fsm_return_value (struct thread_fsm *self); | |
1746 | static enum async_reply_reason | |
1747 | finish_command_fsm_async_reply_reason (struct thread_fsm *self); | |
1748 | ||
1749 | /* finish_command_fsm's vtable. */ | |
1750 | ||
1751 | static struct thread_fsm_ops finish_command_fsm_ops = | |
1752 | { | |
1753 | NULL, /* dtor */ | |
1754 | finish_command_fsm_clean_up, | |
1755 | finish_command_fsm_should_stop, | |
1756 | finish_command_fsm_return_value, | |
1757 | finish_command_fsm_async_reply_reason, | |
8980e177 | 1758 | NULL, /* should_notify_stop */ |
243a9253 PA |
1759 | }; |
1760 | ||
1761 | /* Allocate a new finish_command_fsm. */ | |
1762 | ||
1763 | static struct finish_command_fsm * | |
8980e177 | 1764 | new_finish_command_fsm (struct interp *cmd_interp) |
bfec99b2 | 1765 | { |
243a9253 PA |
1766 | struct finish_command_fsm *sm; |
1767 | ||
1768 | sm = XCNEW (struct finish_command_fsm); | |
8980e177 | 1769 | thread_fsm_ctor (&sm->thread_fsm, &finish_command_fsm_ops, cmd_interp); |
243a9253 PA |
1770 | |
1771 | return sm; | |
1772 | } | |
347bddb7 | 1773 | |
243a9253 PA |
1774 | /* Implementation of the 'should_stop' FSM method for the finish |
1775 | commands. Detects whether the thread stepped out of the function | |
1776 | successfully, and if so, captures the function's return value and | |
1777 | marks the FSM finished. */ | |
1778 | ||
1779 | static int | |
8980e177 PA |
1780 | finish_command_fsm_should_stop (struct thread_fsm *self, |
1781 | struct thread_info *tp) | |
243a9253 PA |
1782 | { |
1783 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
1784 | struct return_value_info *rv = &f->return_value; | |
243a9253 PA |
1785 | |
1786 | if (f->function != NULL | |
1787 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
1788 | f->breakpoint) != NULL) | |
43ff13b4 | 1789 | { |
243a9253 PA |
1790 | /* We're done. */ |
1791 | thread_fsm_set_finished (self); | |
bfec99b2 | 1792 | |
243a9253 PA |
1793 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (f->function)); |
1794 | if (rv->type == NULL) | |
1795 | internal_error (__FILE__, __LINE__, | |
1796 | _("finish_command: function has no target type")); | |
f5871ec0 | 1797 | |
243a9253 | 1798 | if (TYPE_CODE (rv->type) != TYPE_CODE_VOID) |
40c549d6 | 1799 | { |
243a9253 PA |
1800 | struct value *func; |
1801 | ||
1802 | func = read_var_value (f->function, NULL, get_current_frame ()); | |
0700e23e | 1803 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1804 | if (rv->value != NULL) |
1805 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1806 | } |
1807 | } | |
1808 | else if (tp->control.stop_step) | |
1809 | { | |
1810 | /* Finishing from an inline frame, or reverse finishing. In | |
1811 | either case, there's no way to retrieve the return value. */ | |
1812 | thread_fsm_set_finished (self); | |
1813 | } | |
fa4cd53f | 1814 | |
243a9253 PA |
1815 | return 1; |
1816 | } | |
40c549d6 | 1817 | |
243a9253 PA |
1818 | /* Implementation of the 'clean_up' FSM method for the finish |
1819 | commands. */ | |
fa4cd53f | 1820 | |
243a9253 | 1821 | static void |
8980e177 PA |
1822 | finish_command_fsm_clean_up (struct thread_fsm *self, |
1823 | struct thread_info *thread) | |
243a9253 PA |
1824 | { |
1825 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
fa4cd53f | 1826 | |
243a9253 PA |
1827 | if (f->breakpoint != NULL) |
1828 | { | |
1829 | delete_breakpoint (f->breakpoint); | |
1830 | f->breakpoint = NULL; | |
43ff13b4 | 1831 | } |
8980e177 | 1832 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1833 | } |
f941662f | 1834 | |
243a9253 PA |
1835 | /* Implementation of the 'return_value' FSM method for the finish |
1836 | commands. */ | |
1837 | ||
1838 | static struct return_value_info * | |
1839 | finish_command_fsm_return_value (struct thread_fsm *self) | |
1840 | { | |
1841 | struct finish_command_fsm *f = (struct finish_command_fsm *) self; | |
1842 | ||
1843 | return &f->return_value; | |
43ff13b4 JM |
1844 | } |
1845 | ||
243a9253 PA |
1846 | /* Implementation of the 'async_reply_reason' FSM method for the |
1847 | finish commands. */ | |
1848 | ||
1849 | static enum async_reply_reason | |
1850 | finish_command_fsm_async_reply_reason (struct thread_fsm *self) | |
604ead4a | 1851 | { |
243a9253 PA |
1852 | if (execution_direction == EXEC_REVERSE) |
1853 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1854 | else | |
1855 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1856 | } |
1857 | ||
b2175913 MS |
1858 | /* finish_backward -- helper function for finish_command. */ |
1859 | ||
1860 | static void | |
243a9253 | 1861 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1862 | { |
1863 | struct symtab_and_line sal; | |
1864 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1865 | CORE_ADDR pc; |
b2175913 | 1866 | CORE_ADDR func_addr; |
b2175913 | 1867 | |
1c7819ef PA |
1868 | pc = get_frame_pc (get_current_frame ()); |
1869 | ||
1870 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1871 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1872 | |
1873 | sal = find_pc_line (func_addr, 0); | |
1874 | ||
9da8c2a0 | 1875 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1876 | /* Special case: if we're sitting at the function entry point, |
1877 | then all we need to do is take a reverse singlestep. We | |
1878 | don't need to set a breakpoint, and indeed it would do us | |
1879 | no good to do so. | |
1880 | ||
1881 | Note that this can only happen at frame #0, since there's | |
1882 | no way that a function up the stack can have a return address | |
1883 | that's equal to its entry point. */ | |
1884 | ||
1c7819ef | 1885 | if (sal.pc != pc) |
b2175913 | 1886 | { |
a6d9a66e UW |
1887 | struct frame_info *frame = get_selected_frame (NULL); |
1888 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1889 | struct symtab_and_line sr_sal; |
1890 | ||
1891 | /* Set a step-resume at the function's entry point. Once that's | |
1892 | hit, we'll do one more step backwards. */ | |
1893 | init_sal (&sr_sal); | |
1894 | sr_sal.pc = sal.pc; | |
1895 | sr_sal.pspace = get_frame_program_space (frame); | |
1896 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1897 | sr_sal, null_frame_id); | |
a6d9a66e | 1898 | |
64ce06e4 | 1899 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1900 | } |
1901 | else | |
b2175913 | 1902 | { |
9da8c2a0 PA |
1903 | /* We're almost there -- we just need to back up by one more |
1904 | single-step. */ | |
16c381f0 | 1905 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1906 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1907 | } |
b2175913 MS |
1908 | } |
1909 | ||
243a9253 PA |
1910 | /* finish_forward -- helper function for finish_command. FRAME is the |
1911 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1912 | |
1913 | static void | |
243a9253 | 1914 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1915 | { |
def166f6 | 1916 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1917 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1918 | struct symtab_and_line sal; |
1919 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1920 | |
1921 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1922 | sal.pc = get_frame_pc (frame); | |
1923 | ||
243a9253 PA |
1924 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1925 | get_stack_frame_id (frame), | |
1926 | bp_finish); | |
b2175913 | 1927 | |
c70a6932 JK |
1928 | /* set_momentary_breakpoint invalidates FRAME. */ |
1929 | frame = NULL; | |
1930 | ||
def166f6 | 1931 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1932 | |
46c03469 | 1933 | /* We want to print return value, please... */ |
16c381f0 | 1934 | tp->control.proceed_to_finish = 1; |
b2175913 | 1935 | |
243a9253 | 1936 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1937 | } |
1938 | ||
e3b5daf9 MM |
1939 | /* Skip frames for "finish". */ |
1940 | ||
1941 | static struct frame_info * | |
1942 | skip_finish_frames (struct frame_info *frame) | |
1943 | { | |
1944 | struct frame_info *start; | |
1945 | ||
1946 | do | |
1947 | { | |
1948 | start = frame; | |
1949 | ||
1950 | frame = skip_tailcall_frames (frame); | |
1951 | if (frame == NULL) | |
1952 | break; | |
1953 | ||
1954 | frame = skip_unwritable_frames (frame); | |
1955 | if (frame == NULL) | |
1956 | break; | |
1957 | } | |
1958 | while (start != frame); | |
1959 | ||
1960 | return frame; | |
1961 | } | |
1962 | ||
f941662f MK |
1963 | /* "finish": Set a temporary breakpoint at the place the selected |
1964 | frame will return to, then continue. */ | |
c906108c SS |
1965 | |
1966 | static void | |
fba45db2 | 1967 | finish_command (char *arg, int from_tty) |
c906108c | 1968 | { |
52f0bd74 | 1969 | struct frame_info *frame; |
6c4486e6 PA |
1970 | int async_exec; |
1971 | struct cleanup *args_chain; | |
243a9253 PA |
1972 | struct finish_command_fsm *sm; |
1973 | struct thread_info *tp; | |
43ff13b4 | 1974 | |
4247603b | 1975 | ERROR_NO_INFERIOR; |
573cda03 | 1976 | ensure_not_tfind_mode (); |
4247603b PA |
1977 | ensure_valid_thread (); |
1978 | ensure_not_running (); | |
573cda03 | 1979 | |
f941662f | 1980 | /* Find out whether we must run in the background. */ |
6c4486e6 PA |
1981 | arg = strip_bg_char (arg, &async_exec); |
1982 | args_chain = make_cleanup (xfree, arg); | |
43ff13b4 | 1983 | |
8bc2fe48 | 1984 | prepare_execution_command (¤t_target, async_exec); |
c906108c SS |
1985 | |
1986 | if (arg) | |
8a3fe4f8 | 1987 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1988 | |
6c4486e6 PA |
1989 | /* Done with ARGS. */ |
1990 | do_cleanups (args_chain); | |
1991 | ||
206415a3 | 1992 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1993 | if (frame == 0) |
8a3fe4f8 | 1994 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1995 | |
70509625 | 1996 | clear_proceed_status (0); |
c906108c | 1997 | |
243a9253 PA |
1998 | tp = inferior_thread (); |
1999 | ||
8980e177 | 2000 | sm = new_finish_command_fsm (command_interp ()); |
243a9253 PA |
2001 | |
2002 | tp->thread_fsm = &sm->thread_fsm; | |
2003 | ||
edb3359d | 2004 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 2005 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
2006 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
2007 | == INLINE_FRAME) | |
2008 | { | |
2009 | /* Claim we are stepping in the calling frame. An empty step | |
2010 | range means that we will stop once we aren't in a function | |
2011 | called by that frame. We don't use the magic "1" value for | |
2012 | step_range_end, because then infrun will think this is nexti, | |
2013 | and not step over the rest of this inlined function call. */ | |
edb3359d | 2014 | struct symtab_and_line empty_sal; |
abbb1732 | 2015 | |
edb3359d DJ |
2016 | init_sal (&empty_sal); |
2017 | set_step_info (frame, empty_sal); | |
16c381f0 JK |
2018 | tp->control.step_range_start = get_frame_pc (frame); |
2019 | tp->control.step_range_end = tp->control.step_range_start; | |
2020 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
2021 | |
2022 | /* Print info on the selected frame, including level number but not | |
2023 | source. */ | |
2024 | if (from_tty) | |
2025 | { | |
2026 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 2027 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
2028 | } |
2029 | ||
64ce06e4 | 2030 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
2031 | return; |
2032 | } | |
2033 | ||
c906108c SS |
2034 | /* Find the function we will return from. */ |
2035 | ||
243a9253 | 2036 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 2037 | |
f941662f MK |
2038 | /* Print info on the selected frame, including level number but not |
2039 | source. */ | |
c906108c SS |
2040 | if (from_tty) |
2041 | { | |
b2175913 MS |
2042 | if (execution_direction == EXEC_REVERSE) |
2043 | printf_filtered (_("Run back to call of ")); | |
2044 | else | |
743649fd | 2045 | { |
243a9253 | 2046 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
2047 | && !query (_("warning: Function %s does not return normally.\n" |
2048 | "Try to finish anyway? "), | |
243a9253 | 2049 | SYMBOL_PRINT_NAME (sm->function))) |
743649fd MW |
2050 | error (_("Not confirmed.")); |
2051 | printf_filtered (_("Run till exit from ")); | |
2052 | } | |
b2175913 | 2053 | |
08d72866 | 2054 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
2055 | } |
2056 | ||
b2175913 | 2057 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 2058 | finish_backward (sm); |
b2175913 | 2059 | else |
33b4777c | 2060 | { |
e3b5daf9 | 2061 | frame = skip_finish_frames (frame); |
7eb89530 | 2062 | |
33b4777c MM |
2063 | if (frame == NULL) |
2064 | error (_("Cannot find the caller frame.")); | |
2065 | ||
2066 | finish_forward (sm, frame); | |
2067 | } | |
c906108c SS |
2068 | } |
2069 | \f | |
f941662f | 2070 | |
c906108c | 2071 | static void |
fba45db2 | 2072 | program_info (char *args, int from_tty) |
c906108c | 2073 | { |
347bddb7 PA |
2074 | bpstat bs; |
2075 | int num, stat; | |
2076 | struct thread_info *tp; | |
2077 | ptid_t ptid; | |
c5aa993b | 2078 | |
c906108c SS |
2079 | if (!target_has_execution) |
2080 | { | |
a3f17187 | 2081 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
2082 | return; |
2083 | } | |
2084 | ||
347bddb7 PA |
2085 | if (non_stop) |
2086 | ptid = inferior_ptid; | |
2087 | else | |
2088 | { | |
2089 | struct target_waitstatus ws; | |
abbb1732 | 2090 | |
347bddb7 PA |
2091 | get_last_target_status (&ptid, &ws); |
2092 | } | |
2093 | ||
2094 | if (ptid_equal (ptid, null_ptid) || is_exited (ptid)) | |
2095 | error (_("Invalid selected thread.")); | |
2096 | else if (is_running (ptid)) | |
2097 | error (_("Selected thread is running.")); | |
2098 | ||
e09875d4 | 2099 | tp = find_thread_ptid (ptid); |
16c381f0 | 2100 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
2101 | stat = bpstat_num (&bs, &num); |
2102 | ||
c906108c | 2103 | target_files_info (); |
5af949e3 | 2104 | printf_filtered (_("Program stopped at %s.\n"), |
f5656ead | 2105 | paddress (target_gdbarch (), stop_pc)); |
16c381f0 | 2106 | if (tp->control.stop_step) |
a3f17187 | 2107 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 2108 | else if (stat != 0) |
c906108c SS |
2109 | { |
2110 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 2111 | isn't as strange as it seems. */ |
8671a17b | 2112 | while (stat != 0) |
c906108c | 2113 | { |
8671a17b | 2114 | if (stat < 0) |
c906108c | 2115 | { |
3e43a32a MS |
2116 | printf_filtered (_("It stopped at a breakpoint " |
2117 | "that has since been deleted.\n")); | |
c906108c SS |
2118 | } |
2119 | else | |
a3f17187 | 2120 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 2121 | stat = bpstat_num (&bs, &num); |
c906108c SS |
2122 | } |
2123 | } | |
a493e3e2 | 2124 | else if (tp->suspend.stop_signal != GDB_SIGNAL_0) |
c906108c | 2125 | { |
a3f17187 | 2126 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
2ea28649 PA |
2127 | gdb_signal_to_name (tp->suspend.stop_signal), |
2128 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
c906108c SS |
2129 | } |
2130 | ||
0d41ba00 | 2131 | if (from_tty) |
c906108c | 2132 | { |
3e43a32a MS |
2133 | printf_filtered (_("Type \"info stack\" or \"info " |
2134 | "registers\" for more information.\n")); | |
c906108c SS |
2135 | } |
2136 | } | |
2137 | \f | |
2138 | static void | |
fba45db2 | 2139 | environment_info (char *var, int from_tty) |
c906108c SS |
2140 | { |
2141 | if (var) | |
2142 | { | |
3f81c18a | 2143 | char *val = get_in_environ (current_inferior ()->environment, var); |
abbb1732 | 2144 | |
c906108c SS |
2145 | if (val) |
2146 | { | |
2147 | puts_filtered (var); | |
2148 | puts_filtered (" = "); | |
2149 | puts_filtered (val); | |
2150 | puts_filtered ("\n"); | |
2151 | } | |
2152 | else | |
2153 | { | |
2154 | puts_filtered ("Environment variable \""); | |
2155 | puts_filtered (var); | |
2156 | puts_filtered ("\" not defined.\n"); | |
2157 | } | |
2158 | } | |
2159 | else | |
2160 | { | |
3f81c18a | 2161 | char **vector = environ_vector (current_inferior ()->environment); |
abbb1732 | 2162 | |
c906108c SS |
2163 | while (*vector) |
2164 | { | |
2165 | puts_filtered (*vector++); | |
2166 | puts_filtered ("\n"); | |
2167 | } | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | static void | |
fba45db2 | 2172 | set_environment_command (char *arg, int from_tty) |
c906108c | 2173 | { |
52f0bd74 | 2174 | char *p, *val, *var; |
c906108c SS |
2175 | int nullset = 0; |
2176 | ||
2177 | if (arg == 0) | |
e2e0b3e5 | 2178 | error_no_arg (_("environment variable and value")); |
c906108c | 2179 | |
1777feb0 | 2180 | /* Find seperation between variable name and value. */ |
c906108c SS |
2181 | p = (char *) strchr (arg, '='); |
2182 | val = (char *) strchr (arg, ' '); | |
2183 | ||
2184 | if (p != 0 && val != 0) | |
2185 | { | |
2186 | /* We have both a space and an equals. If the space is before the | |
c5aa993b | 2187 | equals, walk forward over the spaces til we see a nonspace |
1777feb0 | 2188 | (possibly the equals). */ |
c906108c SS |
2189 | if (p > val) |
2190 | while (*val == ' ') | |
2191 | val++; | |
2192 | ||
2193 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 2194 | take the char following the spaces. */ |
c906108c SS |
2195 | if (p > val) |
2196 | p = val - 1; | |
2197 | } | |
2198 | else if (val != 0 && p == 0) | |
2199 | p = val; | |
2200 | ||
2201 | if (p == arg) | |
e2e0b3e5 | 2202 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2203 | |
2204 | if (p == 0 || p[1] == 0) | |
2205 | { | |
2206 | nullset = 1; | |
2207 | if (p == 0) | |
1777feb0 | 2208 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2209 | } |
2210 | else | |
2211 | { | |
1777feb0 | 2212 | /* Not setting variable value to null. */ |
c906108c SS |
2213 | val = p + 1; |
2214 | while (*val == ' ' || *val == '\t') | |
2215 | val++; | |
2216 | } | |
2217 | ||
c5aa993b JM |
2218 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2219 | p--; | |
c906108c SS |
2220 | |
2221 | var = savestring (arg, p - arg); | |
2222 | if (nullset) | |
2223 | { | |
3e43a32a MS |
2224 | printf_filtered (_("Setting environment variable " |
2225 | "\"%s\" to null value.\n"), | |
a3f17187 | 2226 | var); |
3f81c18a | 2227 | set_in_environ (current_inferior ()->environment, var, ""); |
c906108c SS |
2228 | } |
2229 | else | |
3f81c18a | 2230 | set_in_environ (current_inferior ()->environment, var, val); |
b8c9b27d | 2231 | xfree (var); |
c906108c SS |
2232 | } |
2233 | ||
2234 | static void | |
fba45db2 | 2235 | unset_environment_command (char *var, int from_tty) |
c906108c SS |
2236 | { |
2237 | if (var == 0) | |
2238 | { | |
2239 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 2240 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2241 | if (!from_tty || query (_("Delete all environment variables? "))) |
c906108c | 2242 | { |
3f81c18a VP |
2243 | free_environ (current_inferior ()->environment); |
2244 | current_inferior ()->environment = make_environ (); | |
c906108c SS |
2245 | } |
2246 | } | |
2247 | else | |
3f81c18a | 2248 | unset_in_environ (current_inferior ()->environment, var); |
c906108c SS |
2249 | } |
2250 | ||
1777feb0 | 2251 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2252 | |
2253 | static const char path_var_name[] = "PATH"; | |
2254 | ||
c906108c | 2255 | static void |
fba45db2 | 2256 | path_info (char *args, int from_tty) |
c906108c SS |
2257 | { |
2258 | puts_filtered ("Executable and object file path: "); | |
3e43a32a MS |
2259 | puts_filtered (get_in_environ (current_inferior ()->environment, |
2260 | path_var_name)); | |
c906108c SS |
2261 | puts_filtered ("\n"); |
2262 | } | |
2263 | ||
2264 | /* Add zero or more directories to the front of the execution path. */ | |
2265 | ||
2266 | static void | |
fba45db2 | 2267 | path_command (char *dirname, int from_tty) |
c906108c SS |
2268 | { |
2269 | char *exec_path; | |
a121b7c1 | 2270 | const char *env; |
abbb1732 | 2271 | |
c906108c | 2272 | dont_repeat (); |
3f81c18a | 2273 | env = get_in_environ (current_inferior ()->environment, path_var_name); |
1777feb0 | 2274 | /* Can be null if path is not set. */ |
c906108c SS |
2275 | if (!env) |
2276 | env = ""; | |
4fcf66da | 2277 | exec_path = xstrdup (env); |
c906108c | 2278 | mod_path (dirname, &exec_path); |
3f81c18a | 2279 | set_in_environ (current_inferior ()->environment, path_var_name, exec_path); |
b8c9b27d | 2280 | xfree (exec_path); |
c906108c | 2281 | if (from_tty) |
c5aa993b | 2282 | path_info ((char *) NULL, from_tty); |
c906108c | 2283 | } |
c906108c | 2284 | \f |
c5aa993b | 2285 | |
1292279a PA |
2286 | /* Print out the register NAME with value VAL, to FILE, in the default |
2287 | fashion. */ | |
2288 | ||
2289 | static void | |
2290 | default_print_one_register_info (struct ui_file *file, | |
2291 | const char *name, | |
2292 | struct value *val) | |
2293 | { | |
2294 | struct type *regtype = value_type (val); | |
f69d9aef | 2295 | int print_raw_format; |
1292279a PA |
2296 | |
2297 | fputs_filtered (name, file); | |
2298 | print_spaces_filtered (15 - strlen (name), file); | |
2299 | ||
f69d9aef AB |
2300 | print_raw_format = (value_entirely_available (val) |
2301 | && !value_optimized_out (val)); | |
1292279a PA |
2302 | |
2303 | /* If virtual format is floating, print it that way, and in raw | |
2304 | hex. */ | |
2305 | if (TYPE_CODE (regtype) == TYPE_CODE_FLT | |
2306 | || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT) | |
2307 | { | |
1292279a PA |
2308 | struct value_print_options opts; |
2309 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
2310 | enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (regtype)); | |
2311 | ||
2312 | get_user_print_options (&opts); | |
2313 | opts.deref_ref = 1; | |
2314 | ||
2315 | val_print (regtype, | |
1292279a PA |
2316 | value_embedded_offset (val), 0, |
2317 | file, 0, val, &opts, current_language); | |
2318 | ||
f69d9aef AB |
2319 | if (print_raw_format) |
2320 | { | |
2321 | fprintf_filtered (file, "\t(raw "); | |
2322 | print_hex_chars (file, valaddr, TYPE_LENGTH (regtype), byte_order); | |
2323 | fprintf_filtered (file, ")"); | |
2324 | } | |
1292279a PA |
2325 | } |
2326 | else | |
2327 | { | |
2328 | struct value_print_options opts; | |
2329 | ||
2330 | /* Print the register in hex. */ | |
2331 | get_formatted_print_options (&opts, 'x'); | |
2332 | opts.deref_ref = 1; | |
2333 | val_print (regtype, | |
1292279a PA |
2334 | value_embedded_offset (val), 0, |
2335 | file, 0, val, &opts, current_language); | |
2336 | /* If not a vector register, print it also according to its | |
2337 | natural format. */ | |
f69d9aef | 2338 | if (print_raw_format && TYPE_VECTOR (regtype) == 0) |
1292279a PA |
2339 | { |
2340 | get_user_print_options (&opts); | |
2341 | opts.deref_ref = 1; | |
2342 | fprintf_filtered (file, "\t"); | |
2343 | val_print (regtype, | |
1292279a PA |
2344 | value_embedded_offset (val), 0, |
2345 | file, 0, val, &opts, current_language); | |
2346 | } | |
2347 | } | |
2348 | ||
2349 | fprintf_filtered (file, "\n"); | |
2350 | } | |
2351 | ||
1777feb0 | 2352 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2353 | registers (print_all == 1) or all non-float and non-vector |
2354 | registers (print_all == 0). | |
c906108c SS |
2355 | |
2356 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2357 | register(s) one per line is good enough. If a different format is |
2358 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2359 | regs), or there is an existing convention for showing all the | |
2360 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2361 | provide that format. */ | |
c906108c | 2362 | |
666e11c5 | 2363 | void |
0ab7a791 AC |
2364 | default_print_registers_info (struct gdbarch *gdbarch, |
2365 | struct ui_file *file, | |
2366 | struct frame_info *frame, | |
2367 | int regnum, int print_all) | |
c906108c | 2368 | { |
0ab7a791 | 2369 | int i; |
a4bd449d UW |
2370 | const int numregs = gdbarch_num_regs (gdbarch) |
2371 | + gdbarch_num_pseudo_regs (gdbarch); | |
0ab7a791 | 2372 | |
c906108c SS |
2373 | for (i = 0; i < numregs; i++) |
2374 | { | |
4782dc19 AC |
2375 | /* Decide between printing all regs, non-float / vector regs, or |
2376 | specific reg. */ | |
c5aa993b JM |
2377 | if (regnum == -1) |
2378 | { | |
f9418c0f | 2379 | if (print_all) |
4782dc19 | 2380 | { |
f9418c0f | 2381 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2382 | continue; |
f9418c0f AC |
2383 | } |
2384 | else | |
2385 | { | |
2386 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2387 | continue; |
2388 | } | |
c5aa993b JM |
2389 | } |
2390 | else | |
2391 | { | |
2392 | if (i != regnum) | |
2393 | continue; | |
2394 | } | |
c906108c SS |
2395 | |
2396 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 2397 | processor, so don't display anything. */ |
a4bd449d UW |
2398 | if (gdbarch_register_name (gdbarch, i) == NULL |
2399 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2400 | continue; |
2401 | ||
1292279a PA |
2402 | default_print_one_register_info (file, |
2403 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2404 | value_of_register (i, frame)); |
c906108c SS |
2405 | } |
2406 | } | |
c906108c | 2407 | |
c906108c | 2408 | void |
fba45db2 | 2409 | registers_info (char *addr_exp, int fpregs) |
c906108c | 2410 | { |
206415a3 | 2411 | struct frame_info *frame; |
a4bd449d | 2412 | struct gdbarch *gdbarch; |
c906108c SS |
2413 | |
2414 | if (!target_has_registers) | |
8a3fe4f8 | 2415 | error (_("The program has no registers now.")); |
206415a3 | 2416 | frame = get_selected_frame (NULL); |
a4bd449d | 2417 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2418 | |
2419 | if (!addr_exp) | |
2420 | { | |
a4bd449d | 2421 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2422 | frame, -1, fpregs); |
c906108c SS |
2423 | return; |
2424 | } | |
2425 | ||
f9418c0f | 2426 | while (*addr_exp != '\0') |
c5aa993b | 2427 | { |
f9418c0f AC |
2428 | char *start; |
2429 | const char *end; | |
c906108c | 2430 | |
529480d0 KS |
2431 | /* Skip leading white space. */ |
2432 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2433 | |
f9418c0f AC |
2434 | /* Discard any leading ``$''. Check that there is something |
2435 | resembling a register following it. */ | |
2436 | if (addr_exp[0] == '$') | |
2437 | addr_exp++; | |
2438 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2439 | error (_("Missing register name")); |
c906108c | 2440 | |
f9418c0f AC |
2441 | /* Find the start/end of this register name/num/group. */ |
2442 | start = addr_exp; | |
2443 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2444 | addr_exp++; | |
2445 | end = addr_exp; | |
ad842144 | 2446 | |
f9418c0f AC |
2447 | /* Figure out what we've found and display it. */ |
2448 | ||
2449 | /* A register name? */ | |
2450 | { | |
029a67e4 | 2451 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2452 | |
f9418c0f AC |
2453 | if (regnum >= 0) |
2454 | { | |
ad842144 MR |
2455 | /* User registers lie completely outside of the range of |
2456 | normal registers. Catch them early so that the target | |
2457 | never sees them. */ | |
2458 | if (regnum >= gdbarch_num_regs (gdbarch) | |
2459 | + gdbarch_num_pseudo_regs (gdbarch)) | |
2460 | { | |
1292279a PA |
2461 | struct value *regval = value_of_user_reg (regnum, frame); |
2462 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2463 | regnum); | |
2464 | ||
2465 | /* Print in the same fashion | |
2466 | gdbarch_print_registers_info's default | |
2467 | implementation prints. */ | |
2468 | default_print_one_register_info (gdb_stdout, | |
2469 | regname, | |
2470 | regval); | |
ad842144 MR |
2471 | } |
2472 | else | |
2473 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2474 | frame, regnum, fpregs); | |
f9418c0f AC |
2475 | continue; |
2476 | } | |
2477 | } | |
ad842144 | 2478 | |
f9418c0f AC |
2479 | /* A register group? */ |
2480 | { | |
6c7d17ba | 2481 | struct reggroup *group; |
abbb1732 | 2482 | |
a4bd449d | 2483 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2484 | group != NULL; |
a4bd449d | 2485 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2486 | { |
2487 | /* Don't bother with a length check. Should the user | |
2488 | enter a short register group name, go with the first | |
2489 | group that matches. */ | |
6c7d17ba | 2490 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2491 | break; |
2492 | } | |
6c7d17ba | 2493 | if (group != NULL) |
f9418c0f AC |
2494 | { |
2495 | int regnum; | |
abbb1732 | 2496 | |
f57d151a | 2497 | for (regnum = 0; |
a4bd449d UW |
2498 | regnum < gdbarch_num_regs (gdbarch) |
2499 | + gdbarch_num_pseudo_regs (gdbarch); | |
f57d151a | 2500 | regnum++) |
f9418c0f | 2501 | { |
a4bd449d UW |
2502 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2503 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2504 | gdb_stdout, frame, |
f9418c0f AC |
2505 | regnum, fpregs); |
2506 | } | |
2507 | continue; | |
2508 | } | |
2509 | } | |
c906108c | 2510 | |
f9418c0f | 2511 | /* Nothing matched. */ |
8a3fe4f8 | 2512 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2513 | } |
c906108c SS |
2514 | } |
2515 | ||
1dd5fedc | 2516 | static void |
fba45db2 | 2517 | all_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
2518 | { |
2519 | registers_info (addr_exp, 1); | |
2520 | } | |
2521 | ||
a58dd373 | 2522 | static void |
fba45db2 | 2523 | nofp_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
2524 | { |
2525 | registers_info (addr_exp, 0); | |
2526 | } | |
e76f1f2e AC |
2527 | |
2528 | static void | |
d80b854b | 2529 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2530 | struct frame_info *frame, const char *args) |
2531 | { | |
d80b854b UW |
2532 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2533 | ||
e76f1f2e AC |
2534 | if (gdbarch_print_vector_info_p (gdbarch)) |
2535 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2536 | else | |
2537 | { | |
2538 | int regnum; | |
2539 | int printed_something = 0; | |
ab4327e0 | 2540 | |
f57d151a | 2541 | for (regnum = 0; |
a4bd449d UW |
2542 | regnum < gdbarch_num_regs (gdbarch) |
2543 | + gdbarch_num_pseudo_regs (gdbarch); | |
f57d151a | 2544 | regnum++) |
e76f1f2e | 2545 | { |
f9418c0f | 2546 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2547 | { |
2548 | printed_something = 1; | |
e76f1f2e | 2549 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2550 | } |
2551 | } | |
2552 | if (!printed_something) | |
2553 | fprintf_filtered (file, "No vector information\n"); | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | static void | |
2558 | vector_info (char *args, int from_tty) | |
2559 | { | |
206415a3 DJ |
2560 | if (!target_has_registers) |
2561 | error (_("The program has no registers now.")); | |
2562 | ||
d80b854b | 2563 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2564 | } |
c906108c | 2565 | \f |
5fd62852 PA |
2566 | /* Kill the inferior process. Make us have no inferior. */ |
2567 | ||
2568 | static void | |
2569 | kill_command (char *arg, int from_tty) | |
2570 | { | |
2571 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2572 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2573 | some targets don't have processes! */ |
5fd62852 PA |
2574 | |
2575 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2576 | error (_("The program is not being run.")); | |
2577 | if (!query (_("Kill the program being debugged? "))) | |
2578 | error (_("Not confirmed.")); | |
2579 | target_kill (); | |
2580 | ||
c35b1492 PA |
2581 | /* If we still have other inferiors to debug, then don't mess with |
2582 | with their threads. */ | |
2583 | if (!have_inferiors ()) | |
5fd62852 | 2584 | { |
1777feb0 | 2585 | init_thread_list (); /* Destroy thread info. */ |
5fd62852 PA |
2586 | |
2587 | /* Killing off the inferior can leave us with a core file. If | |
2588 | so, print the state we are left in. */ | |
2589 | if (target_has_stack) | |
2590 | { | |
2591 | printf_filtered (_("In %s,\n"), target_longname); | |
08d72866 | 2592 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
5fd62852 PA |
2593 | } |
2594 | } | |
2595 | bfd_cache_close_all (); | |
2596 | } | |
c5aa993b | 2597 | |
74531fed PA |
2598 | /* Used in `attach&' command. ARG is a point to an integer |
2599 | representing a process id. Proceed threads of this process iff | |
2600 | they stopped due to debugger request, and when they did, they | |
a493e3e2 | 2601 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads |
74531fed PA |
2602 | that have been explicitly been told to stop. */ |
2603 | ||
2604 | static int | |
2605 | proceed_after_attach_callback (struct thread_info *thread, | |
2606 | void *arg) | |
2607 | { | |
2608 | int pid = * (int *) arg; | |
2609 | ||
2610 | if (ptid_get_pid (thread->ptid) == pid | |
2611 | && !is_exited (thread->ptid) | |
2612 | && !is_executing (thread->ptid) | |
2613 | && !thread->stop_requested | |
a493e3e2 | 2614 | && thread->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed PA |
2615 | { |
2616 | switch_to_thread (thread->ptid); | |
70509625 | 2617 | clear_proceed_status (0); |
64ce06e4 | 2618 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2619 | } |
2620 | ||
2621 | return 0; | |
2622 | } | |
2623 | ||
2624 | static void | |
2625 | proceed_after_attach (int pid) | |
2626 | { | |
2627 | /* Don't error out if the current thread is running, because | |
2628 | there may be other stopped threads. */ | |
2629 | struct cleanup *old_chain; | |
2630 | ||
2631 | /* Backup current thread and selected frame. */ | |
2632 | old_chain = make_cleanup_restore_current_thread (); | |
2633 | ||
2634 | iterate_over_threads (proceed_after_attach_callback, &pid); | |
2635 | ||
2636 | /* Restore selected ptid. */ | |
2637 | do_cleanups (old_chain); | |
2638 | } | |
2639 | ||
6efcd9a8 | 2640 | /* See inferior.h. */ |
c906108c | 2641 | |
6efcd9a8 PA |
2642 | void |
2643 | setup_inferior (int from_tty) | |
9356cf8d | 2644 | { |
d6b48e9c | 2645 | struct inferior *inferior; |
9356cf8d | 2646 | |
d6b48e9c | 2647 | inferior = current_inferior (); |
6efcd9a8 | 2648 | inferior->needs_setup = 0; |
9356cf8d PA |
2649 | |
2650 | /* If no exec file is yet known, try to determine it from the | |
2651 | process itself. */ | |
a10de604 | 2652 | if (get_exec_file (0) == NULL) |
bb805577 | 2653 | exec_file_locate_attach (ptid_get_pid (inferior_ptid), 1, from_tty); |
9356cf8d PA |
2654 | else |
2655 | { | |
2656 | reopen_exec_file (); | |
2657 | reread_symbols (); | |
2658 | } | |
2659 | ||
2660 | /* Take any necessary post-attaching actions for this platform. */ | |
dfd4cc63 | 2661 | target_post_attach (ptid_get_pid (inferior_ptid)); |
9356cf8d PA |
2662 | |
2663 | post_create_inferior (¤t_target, from_tty); | |
6efcd9a8 PA |
2664 | } |
2665 | ||
2666 | /* What to do after the first program stops after attaching. */ | |
2667 | enum attach_post_wait_mode | |
2668 | { | |
2669 | /* Do nothing. Leaves threads as they are. */ | |
2670 | ATTACH_POST_WAIT_NOTHING, | |
2671 | ||
2672 | /* Re-resume threads that are marked running. */ | |
2673 | ATTACH_POST_WAIT_RESUME, | |
2674 | ||
2675 | /* Stop all threads. */ | |
2676 | ATTACH_POST_WAIT_STOP, | |
2677 | }; | |
2678 | ||
2679 | /* Called after we've attached to a process and we've seen it stop for | |
2680 | the first time. If ASYNC_EXEC is true, re-resume threads that | |
2681 | should be running. Else if ATTACH, */ | |
2682 | ||
2683 | static void | |
a121b7c1 | 2684 | attach_post_wait (const char *args, int from_tty, enum attach_post_wait_mode mode) |
6efcd9a8 PA |
2685 | { |
2686 | struct inferior *inferior; | |
9356cf8d | 2687 | |
6efcd9a8 PA |
2688 | inferior = current_inferior (); |
2689 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2690 | ||
2691 | if (inferior->needs_setup) | |
2692 | setup_inferior (from_tty); | |
2693 | ||
2694 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2695 | { |
2696 | /* The user requested an `attach&', so be sure to leave threads | |
2697 | that didn't get a signal running. */ | |
2698 | ||
2699 | /* Immediatelly resume all suspended threads of this inferior, | |
2700 | and this inferior only. This should have no effect on | |
2701 | already running threads. If a thread has been stopped with a | |
2702 | signal, leave it be. */ | |
2703 | if (non_stop) | |
2704 | proceed_after_attach (inferior->pid); | |
2705 | else | |
2706 | { | |
a493e3e2 | 2707 | if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed | 2708 | { |
70509625 | 2709 | clear_proceed_status (0); |
64ce06e4 | 2710 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2711 | } |
2712 | } | |
2713 | } | |
6efcd9a8 | 2714 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2715 | { |
74531fed PA |
2716 | /* The user requested a plain `attach', so be sure to leave |
2717 | the inferior stopped. */ | |
2718 | ||
74531fed PA |
2719 | /* At least the current thread is already stopped. */ |
2720 | ||
2721 | /* In all-stop, by definition, all threads have to be already | |
2722 | stopped at this point. In non-stop, however, although the | |
2723 | selected thread is stopped, others may still be executing. | |
2724 | Be sure to explicitly stop all threads of the process. This | |
2725 | should have no effect on already stopped threads. */ | |
066f6b6e | 2726 | if (non_stop) |
74531fed | 2727 | target_stop (pid_to_ptid (inferior->pid)); |
066f6b6e PA |
2728 | else if (target_is_non_stop_p ()) |
2729 | { | |
2730 | struct thread_info *thread; | |
2731 | struct thread_info *lowest = inferior_thread (); | |
2732 | int pid = current_inferior ()->pid; | |
2733 | ||
2734 | stop_all_threads (); | |
2735 | ||
2736 | /* It's not defined which thread will report the attach | |
2737 | stop. For consistency, always select the thread with | |
2738 | lowest GDB number, which should be the main thread, if it | |
2739 | still exists. */ | |
2740 | ALL_NON_EXITED_THREADS (thread) | |
2741 | { | |
2742 | if (ptid_get_pid (thread->ptid) == pid) | |
2743 | { | |
5d5658a1 PA |
2744 | if (thread->inf->num < lowest->inf->num |
2745 | || thread->per_inf_num < lowest->per_inf_num) | |
066f6b6e PA |
2746 | lowest = thread; |
2747 | } | |
2748 | } | |
2749 | ||
2750 | switch_to_thread (lowest->ptid); | |
2751 | } | |
74531fed PA |
2752 | |
2753 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2754 | normal_stop (); |
2755 | if (deprecated_attach_hook) | |
2756 | deprecated_attach_hook (); | |
2757 | } | |
2758 | } | |
2759 | ||
bfec99b2 | 2760 | struct attach_command_continuation_args |
9356cf8d PA |
2761 | { |
2762 | char *args; | |
2763 | int from_tty; | |
6efcd9a8 | 2764 | enum attach_post_wait_mode mode; |
bfec99b2 | 2765 | }; |
9356cf8d | 2766 | |
bfec99b2 | 2767 | static void |
fa4cd53f | 2768 | attach_command_continuation (void *args, int err) |
bfec99b2 | 2769 | { |
9a3c8263 SM |
2770 | struct attach_command_continuation_args *a |
2771 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2772 | |
fa4cd53f PA |
2773 | if (err) |
2774 | return; | |
2775 | ||
6efcd9a8 | 2776 | attach_post_wait (a->args, a->from_tty, a->mode); |
9356cf8d PA |
2777 | } |
2778 | ||
604ead4a PA |
2779 | static void |
2780 | attach_command_continuation_free_args (void *args) | |
2781 | { | |
9a3c8263 SM |
2782 | struct attach_command_continuation_args *a |
2783 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2784 | |
604ead4a PA |
2785 | xfree (a->args); |
2786 | xfree (a); | |
2787 | } | |
2788 | ||
6efcd9a8 PA |
2789 | /* "attach" command entry point. Takes a program started up outside |
2790 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2791 | and allows us to start debugging it. */ | |
2792 | ||
c906108c | 2793 | void |
fba45db2 | 2794 | attach_command (char *args, int from_tty) |
c906108c | 2795 | { |
6c4486e6 PA |
2796 | int async_exec; |
2797 | struct cleanup *args_chain; | |
b3ccfe11 | 2798 | struct target_ops *attach_target; |
6efcd9a8 PA |
2799 | struct inferior *inferior = current_inferior (); |
2800 | enum attach_post_wait_mode mode; | |
c906108c | 2801 | |
c5aa993b | 2802 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2803 | |
f5656ead | 2804 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2805 | /* Don't complain if all processes share the same symbol |
2806 | space. */ | |
8a305172 PA |
2807 | ; |
2808 | else if (target_has_execution) | |
c906108c | 2809 | { |
9e2f0ad4 | 2810 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2811 | target_kill (); |
2812 | else | |
8a3fe4f8 | 2813 | error (_("Not killed.")); |
c906108c SS |
2814 | } |
2815 | ||
fd79ecee DJ |
2816 | /* Clean up any leftovers from other runs. Some other things from |
2817 | this function should probably be moved into target_pre_inferior. */ | |
2818 | target_pre_inferior (from_tty); | |
2819 | ||
6c4486e6 PA |
2820 | args = strip_bg_char (args, &async_exec); |
2821 | args_chain = make_cleanup (xfree, args); | |
8bc2fe48 | 2822 | |
b3ccfe11 TT |
2823 | attach_target = find_attach_target (); |
2824 | ||
8bc2fe48 PA |
2825 | prepare_execution_command (attach_target, async_exec); |
2826 | ||
b3ccfe11 | 2827 | if (non_stop && !attach_target->to_supports_non_stop (attach_target)) |
9908b566 VP |
2828 | error (_("Cannot attach to this target in non-stop mode")); |
2829 | ||
b3ccfe11 TT |
2830 | attach_target->to_attach (attach_target, args, from_tty); |
2831 | /* to_attach should push the target, so after this point we | |
2832 | shouldn't refer to attach_target again. */ | |
2833 | attach_target = NULL; | |
c906108c SS |
2834 | |
2835 | /* Set up the "saved terminal modes" of the inferior | |
2836 | based on what modes we are starting it with. */ | |
2837 | target_terminal_init (); | |
2838 | ||
7180e04a PA |
2839 | /* Install inferior's terminal modes. This may look like a no-op, |
2840 | as we've just saved them above, however, this does more than | |
2841 | restore terminal settings: | |
2842 | ||
2843 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2844 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2845 | stop would end up as a spurious Quit. | |
2846 | ||
2847 | - removes stdin from the event loop, which we need if attaching | |
2848 | in the foreground, otherwise on targets that report an initial | |
2849 | stop on attach (which are most) we'd process input/commands | |
2850 | while we're in the event loop waiting for that stop. That is, | |
2851 | before the attach continuation runs and the command is really | |
2852 | finished. */ | |
2853 | target_terminal_inferior (); | |
2854 | ||
c906108c SS |
2855 | /* Set up execution context to know that we should return from |
2856 | wait_for_inferior as soon as the target reports a stop. */ | |
2857 | init_wait_for_inferior (); | |
70509625 | 2858 | clear_proceed_status (0); |
c906108c | 2859 | |
6efcd9a8 PA |
2860 | inferior->needs_setup = 1; |
2861 | ||
fbea99ea | 2862 | if (target_is_non_stop_p ()) |
74531fed PA |
2863 | { |
2864 | /* If we find that the current thread isn't stopped, explicitly | |
2865 | do so now, because we're going to install breakpoints and | |
2866 | poke at memory. */ | |
2867 | ||
2868 | if (async_exec) | |
2869 | /* The user requested an `attach&'; stop just one thread. */ | |
2870 | target_stop (inferior_ptid); | |
2871 | else | |
2872 | /* The user requested an `attach', so stop all threads of this | |
2873 | inferior. */ | |
2874 | target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid))); | |
2875 | } | |
2876 | ||
6efcd9a8 PA |
2877 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2878 | ||
dc177b7a PA |
2879 | /* Some system don't generate traps when attaching to inferior. |
2880 | E.g. Mach 3 or GNU hurd. */ | |
2881 | if (!target_attach_no_wait) | |
c5aa993b | 2882 | { |
0b333c5e | 2883 | struct attach_command_continuation_args *a; |
d6b48e9c | 2884 | |
1777feb0 | 2885 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2886 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2887 | need a way for handle_inferior_event to reset the stop_signal | |
2888 | variable after an attach, and this is what | |
2889 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2890 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2891 | |
3b12939d | 2892 | /* Wait for stop. */ |
0b333c5e PA |
2893 | a = XNEW (struct attach_command_continuation_args); |
2894 | a->args = xstrdup (args); | |
2895 | a->from_tty = from_tty; | |
6efcd9a8 | 2896 | a->mode = mode; |
0b333c5e PA |
2897 | add_inferior_continuation (attach_command_continuation, a, |
2898 | attach_command_continuation_free_args); | |
2899 | /* Done with ARGS. */ | |
2900 | do_cleanups (args_chain); | |
2901 | ||
2902 | if (!target_is_async_p ()) | |
2903 | mark_infrun_async_event_handler (); | |
2904 | return; | |
dc177b7a | 2905 | } |
6426a772 | 2906 | |
978b9495 JK |
2907 | /* Done with ARGS. */ |
2908 | do_cleanups (args_chain); | |
2909 | ||
6efcd9a8 | 2910 | attach_post_wait (args, from_tty, mode); |
c906108c SS |
2911 | } |
2912 | ||
1941c569 PA |
2913 | /* We had just found out that the target was already attached to an |
2914 | inferior. PTID points at a thread of this new inferior, that is | |
2915 | the most likely to be stopped right now, but not necessarily so. | |
2916 | The new inferior is assumed to be already added to the inferior | |
2917 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2918 | this inferior running, except those we've explicitly seen reported | |
2919 | as stopped. */ | |
2920 | ||
2921 | void | |
2922 | notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) | |
2923 | { | |
2924 | struct cleanup* old_chain; | |
6efcd9a8 | 2925 | enum attach_post_wait_mode mode; |
1941c569 PA |
2926 | |
2927 | old_chain = make_cleanup (null_cleanup, NULL); | |
2928 | ||
0d5b594f | 2929 | mode = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; |
1941c569 PA |
2930 | |
2931 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2932 | make_cleanup_restore_current_thread (); | |
2933 | ||
6efcd9a8 PA |
2934 | /* Avoid reading registers -- we haven't fetched the target |
2935 | description yet. */ | |
2936 | switch_to_thread_no_regs (find_thread_ptid (ptid)); | |
1941c569 PA |
2937 | |
2938 | /* When we "notice" a new inferior we need to do all the things we | |
2939 | would normally do if we had just attached to it. */ | |
2940 | ||
2941 | if (is_executing (inferior_ptid)) | |
2942 | { | |
0b333c5e | 2943 | struct attach_command_continuation_args *a; |
1941c569 PA |
2944 | struct inferior *inferior = current_inferior (); |
2945 | ||
2946 | /* We're going to install breakpoints, and poke at memory, | |
2947 | ensure that the inferior is stopped for a moment while we do | |
2948 | that. */ | |
2949 | target_stop (inferior_ptid); | |
2950 | ||
16c381f0 | 2951 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2952 | |
2953 | /* Wait for stop before proceeding. */ | |
0b333c5e PA |
2954 | a = XNEW (struct attach_command_continuation_args); |
2955 | a->args = xstrdup (""); | |
2956 | a->from_tty = from_tty; | |
6efcd9a8 | 2957 | a->mode = mode; |
0b333c5e PA |
2958 | add_inferior_continuation (attach_command_continuation, a, |
2959 | attach_command_continuation_free_args); | |
1941c569 | 2960 | |
0b333c5e PA |
2961 | do_cleanups (old_chain); |
2962 | return; | |
1941c569 PA |
2963 | } |
2964 | ||
6efcd9a8 | 2965 | attach_post_wait ("" /* args */, from_tty, mode); |
1941c569 PA |
2966 | |
2967 | do_cleanups (old_chain); | |
2968 | } | |
2969 | ||
c906108c SS |
2970 | /* |
2971 | * detach_command -- | |
2972 | * takes a program previously attached to and detaches it. | |
2973 | * The program resumes execution and will no longer stop | |
2974 | * on signals, etc. We better not have left any breakpoints | |
2975 | * in the program or it'll die when it hits one. For this | |
2976 | * to work, it may be necessary for the process to have been | |
2977 | * previously attached. It *might* work if the program was | |
2978 | * started via the normal ptrace (PTRACE_TRACEME). | |
2979 | */ | |
2980 | ||
6418d433 | 2981 | void |
fba45db2 | 2982 | detach_command (char *args, int from_tty) |
c906108c | 2983 | { |
1f5d0fc9 | 2984 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a PA |
2985 | |
2986 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2987 | error (_("The program is not being run.")); | |
2988 | ||
2f9d54cf PA |
2989 | query_if_trace_running (from_tty); |
2990 | ||
2991 | disconnect_tracing (); | |
d5551862 | 2992 | |
c906108c | 2993 | target_detach (args, from_tty); |
50c71eaf | 2994 | |
63000888 PA |
2995 | /* The current inferior process was just detached successfully. Get |
2996 | rid of breakpoints that no longer make sense. Note we don't do | |
2997 | this within target_detach because that is also used when | |
2998 | following child forks, and in that case we will want to transfer | |
2999 | breakpoints to the child, not delete them. */ | |
3000 | breakpoint_init_inferior (inf_exited); | |
3001 | ||
50c71eaf PA |
3002 | /* If the solist is global across inferiors, don't clear it when we |
3003 | detach from a single inferior. */ | |
f5656ead | 3004 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 3005 | no_shared_libraries (NULL, from_tty); |
8a305172 | 3006 | |
c35b1492 PA |
3007 | /* If we still have inferiors to debug, then don't mess with their |
3008 | threads. */ | |
3009 | if (!have_inferiors ()) | |
8a305172 PA |
3010 | init_thread_list (); |
3011 | ||
9a4105ab AC |
3012 | if (deprecated_detach_hook) |
3013 | deprecated_detach_hook (); | |
c906108c SS |
3014 | } |
3015 | ||
6ad8ae5c DJ |
3016 | /* Disconnect from the current target without resuming it (leaving it |
3017 | waiting for a debugger). | |
3018 | ||
3019 | We'd better not have left any breakpoints in the program or the | |
3020 | next debugger will get confused. Currently only supported for some | |
3021 | remote targets, since the normal attach mechanisms don't work on | |
3022 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
3023 | ||
3024 | static void | |
3025 | disconnect_command (char *args, int from_tty) | |
3026 | { | |
1777feb0 | 3027 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
3028 | query_if_trace_running (from_tty); |
3029 | disconnect_tracing (); | |
6ad8ae5c | 3030 | target_disconnect (args, from_tty); |
e85a822c | 3031 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 3032 | init_thread_list (); |
9a4105ab AC |
3033 | if (deprecated_detach_hook) |
3034 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
3035 | } |
3036 | ||
77ebaa5a VP |
3037 | void |
3038 | interrupt_target_1 (int all_threads) | |
3039 | { | |
3040 | ptid_t ptid; | |
abbb1732 | 3041 | |
77ebaa5a VP |
3042 | if (all_threads) |
3043 | ptid = minus_one_ptid; | |
3044 | else | |
3045 | ptid = inferior_ptid; | |
e42de8c7 PA |
3046 | |
3047 | if (non_stop) | |
3048 | target_stop (ptid); | |
3049 | else | |
3050 | target_interrupt (ptid); | |
252fbfc8 PA |
3051 | |
3052 | /* Tag the thread as having been explicitly requested to stop, so | |
3053 | other parts of gdb know not to resume this thread automatically, | |
3054 | if it was stopped due to an internal event. Limit this to | |
3055 | non-stop mode, as when debugging a multi-threaded application in | |
3056 | all-stop mode, we will only get one stop event --- it's undefined | |
3057 | which thread will report the event. */ | |
3058 | if (non_stop) | |
3059 | set_stop_requested (ptid, 1); | |
77ebaa5a VP |
3060 | } |
3061 | ||
6339bfc4 DE |
3062 | /* interrupt [-a] |
3063 | Stop the execution of the target while running in async mode, in | |
17e5269b | 3064 | the background. In all-stop, stop the whole process. In non-stop |
8cae4b3f PA |
3065 | mode, stop the current thread only by default, or stop all threads |
3066 | if the `-a' switch is used. */ | |
3067 | ||
1dd5fedc | 3068 | static void |
0a07590b | 3069 | interrupt_command (char *args, int from_tty) |
43ff13b4 | 3070 | { |
362646f5 | 3071 | if (target_can_async_p ()) |
43ff13b4 | 3072 | { |
8cae4b3f PA |
3073 | int all_threads = 0; |
3074 | ||
1777feb0 | 3075 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 3076 | |
8cae4b3f | 3077 | if (args != NULL |
61012eef | 3078 | && startswith (args, "-a")) |
8cae4b3f PA |
3079 | all_threads = 1; |
3080 | ||
3081 | if (!non_stop && all_threads) | |
3082 | error (_("-a is meaningless in all-stop mode.")); | |
3083 | ||
77ebaa5a | 3084 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
3085 | } |
3086 | } | |
3087 | ||
cc86d1cb YQ |
3088 | /* See inferior.h. */ |
3089 | ||
3090 | void | |
3091 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
3092 | struct frame_info *frame, const char *args) | |
c906108c | 3093 | { |
cc86d1cb YQ |
3094 | int regnum; |
3095 | int printed_something = 0; | |
d80b854b | 3096 | |
cc86d1cb YQ |
3097 | for (regnum = 0; |
3098 | regnum < gdbarch_num_regs (gdbarch) | |
3099 | + gdbarch_num_pseudo_regs (gdbarch); | |
3100 | regnum++) | |
23e3a7ac | 3101 | { |
cc86d1cb | 3102 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 3103 | { |
cc86d1cb YQ |
3104 | printed_something = 1; |
3105 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 3106 | } |
23e3a7ac | 3107 | } |
cc86d1cb YQ |
3108 | if (!printed_something) |
3109 | fprintf_filtered (file, "No floating-point info " | |
3110 | "available for this processor.\n"); | |
23e3a7ac AC |
3111 | } |
3112 | ||
3113 | static void | |
3114 | float_info (char *args, int from_tty) | |
3115 | { | |
cc86d1cb YQ |
3116 | struct frame_info *frame; |
3117 | ||
206415a3 DJ |
3118 | if (!target_has_registers) |
3119 | error (_("The program has no registers now.")); | |
3120 | ||
cc86d1cb YQ |
3121 | frame = get_selected_frame (NULL); |
3122 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
3123 | } |
3124 | \f | |
c906108c | 3125 | static void |
fba45db2 | 3126 | unset_command (char *args, int from_tty) |
c906108c | 3127 | { |
3e43a32a MS |
3128 | printf_filtered (_("\"unset\" must be followed by the " |
3129 | "name of an unset subcommand.\n")); | |
635c7e8a | 3130 | help_list (unsetlist, "unset ", all_commands, gdb_stdout); |
c906108c SS |
3131 | } |
3132 | ||
145b16a9 UW |
3133 | /* Implement `info proc' family of commands. */ |
3134 | ||
3135 | static void | |
3136 | info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty) | |
3137 | { | |
3030c96e UW |
3138 | struct gdbarch *gdbarch = get_current_arch (); |
3139 | ||
451b7c33 TT |
3140 | if (!target_info_proc (args, what)) |
3141 | { | |
3142 | if (gdbarch_info_proc_p (gdbarch)) | |
3143 | gdbarch_info_proc (gdbarch, args, what); | |
3144 | else | |
3145 | error (_("Not supported on this target.")); | |
3146 | } | |
145b16a9 UW |
3147 | } |
3148 | ||
3149 | /* Implement `info proc' when given without any futher parameters. */ | |
3150 | ||
3151 | static void | |
3152 | info_proc_cmd (char *args, int from_tty) | |
3153 | { | |
3154 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
3155 | } | |
3156 | ||
3157 | /* Implement `info proc mappings'. */ | |
3158 | ||
3159 | static void | |
3160 | info_proc_cmd_mappings (char *args, int from_tty) | |
3161 | { | |
3162 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
3163 | } | |
3164 | ||
3165 | /* Implement `info proc stat'. */ | |
3166 | ||
3167 | static void | |
3168 | info_proc_cmd_stat (char *args, int from_tty) | |
3169 | { | |
3170 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
3171 | } | |
3172 | ||
3173 | /* Implement `info proc status'. */ | |
3174 | ||
3175 | static void | |
3176 | info_proc_cmd_status (char *args, int from_tty) | |
3177 | { | |
3178 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
3179 | } | |
3180 | ||
3181 | /* Implement `info proc cwd'. */ | |
3182 | ||
3183 | static void | |
3184 | info_proc_cmd_cwd (char *args, int from_tty) | |
3185 | { | |
3186 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
3187 | } | |
3188 | ||
3189 | /* Implement `info proc cmdline'. */ | |
3190 | ||
3191 | static void | |
3192 | info_proc_cmd_cmdline (char *args, int from_tty) | |
3193 | { | |
3194 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
3195 | } | |
3196 | ||
3197 | /* Implement `info proc exe'. */ | |
3198 | ||
3199 | static void | |
3200 | info_proc_cmd_exe (char *args, int from_tty) | |
3201 | { | |
3202 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
3203 | } | |
3204 | ||
3205 | /* Implement `info proc all'. */ | |
3206 | ||
3207 | static void | |
3208 | info_proc_cmd_all (char *args, int from_tty) | |
3209 | { | |
3210 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
3211 | } | |
3212 | ||
c906108c | 3213 | void |
fba45db2 | 3214 | _initialize_infcmd (void) |
c906108c | 3215 | { |
145b16a9 | 3216 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3217 | struct cmd_list_element *c = NULL; |
6f937416 | 3218 | const char *cmd_name; |
3cb3b8df | 3219 | |
1777feb0 | 3220 | /* Add the filename of the terminal connected to inferior I/O. */ |
0a1ddfa6 SM |
3221 | add_setshow_optional_filename_cmd ("inferior-tty", class_run, |
3222 | &inferior_io_terminal_scratch, _("\ | |
3cb3b8df BR |
3223 | Set terminal for future runs of program being debugged."), _("\ |
3224 | Show terminal for future runs of program being debugged."), _("\ | |
0a1ddfa6 SM |
3225 | Usage: set inferior-tty [TTY]\n\n\ |
3226 | If TTY is omitted, the default behavior of using the same terminal as GDB\n\ | |
3227 | is restored."), | |
3228 | set_inferior_tty_command, | |
3229 | show_inferior_tty_command, | |
3230 | &setlist, &showlist); | |
3cb3b8df | 3231 | add_com_alias ("tty", "set inferior-tty", class_alias, 0); |
c906108c | 3232 | |
6ace3df1 YQ |
3233 | cmd_name = "args"; |
3234 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3235 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3236 | Set argument list to give program being debugged when it is started."), _("\ |
3237 | Show argument list to give program being debugged when it is started."), _("\ | |
3238 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3239 | set_args_command, |
3240 | show_args_command, | |
3241 | &setlist, &showlist); | |
3242 | c = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
3243 | gdb_assert (c != NULL); | |
3244 | set_cmd_completer (c, filename_completer); | |
c906108c | 3245 | |
1a966eab AC |
3246 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3247 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3248 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3249 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3250 | environment to be given to the program."), &showlist); |
5ba2abeb | 3251 | set_cmd_completer (c, noop_completer); |
c906108c SS |
3252 | |
3253 | add_prefix_cmd ("unset", no_class, unset_command, | |
1bedd215 | 3254 | _("Complement to certain \"set\" commands."), |
c906108c | 3255 | &unsetlist, "unset ", 0, &cmdlist); |
c5aa993b | 3256 | |
1a966eab AC |
3257 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3258 | Cancel environment variable VAR for the program.\n\ | |
3259 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3260 | &unsetlist); |
5ba2abeb | 3261 | set_cmd_completer (c, noop_completer); |
c906108c | 3262 | |
1a966eab AC |
3263 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3264 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3265 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3266 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3267 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3268 | &setlist); |
5ba2abeb | 3269 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3270 | |
1bedd215 AC |
3271 | c = add_com ("path", class_files, path_command, _("\ |
3272 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3273 | $cwd in the path means the current working directory.\n\ |
3274 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3275 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3276 | fully linked executable files and separately compiled object files as \ |
3277 | needed.")); | |
5ba2abeb | 3278 | set_cmd_completer (c, filename_completer); |
c906108c | 3279 | |
1a966eab AC |
3280 | c = add_cmd ("paths", no_class, path_info, _("\ |
3281 | Current search path for finding object files.\n\ | |
c906108c SS |
3282 | $cwd in the path means the current working directory.\n\ |
3283 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3284 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3285 | fully linked executable files and separately compiled object files as \ |
3286 | needed."), | |
c906108c | 3287 | &showlist); |
5ba2abeb | 3288 | set_cmd_completer (c, noop_completer); |
c906108c | 3289 | |
2277426b PA |
3290 | add_prefix_cmd ("kill", class_run, kill_command, |
3291 | _("Kill execution of program being debugged."), | |
3292 | &killlist, "kill ", 0, &cmdlist); | |
5fd62852 | 3293 | |
1bedd215 AC |
3294 | add_com ("attach", class_run, attach_command, _("\ |
3295 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3296 | This command attaches to another target, of the same type as your last\n\ |
3297 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3298 | The command may take as argument a process id or a device file.\n\ | |
3299 | For a process id, you must have permission to send the process a signal,\n\ | |
3300 | and it must have the same effective uid as the debugger.\n\ | |
3301 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3302 | program running in the process, looking first in the current working\n\ | |
3303 | directory, or (if not found there) using the source file search path\n\ | |
3304 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3305 | to specify the program, and to load its symbol table.")); |
c906108c | 3306 | |
f73adfeb | 3307 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3308 | Detach a process or file previously attached.\n\ |
c906108c | 3309 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb AS |
3310 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
3311 | &detachlist, "detach ", 0, &cmdlist); | |
c906108c | 3312 | |
1bedd215 AC |
3313 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3314 | Disconnect from a target.\n\ | |
6ad8ae5c | 3315 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3316 | all targets.")); |
6ad8ae5c | 3317 | |
de0bea00 | 3318 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3319 | Continue program with the specified signal.\n\ |
3320 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3321 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3322 | \n\ |
3323 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3324 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3325 | and you want to resume the program while discarding the signal.\n\ |
3326 | \n\ | |
3327 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3328 | the current thread only.")); | |
3329 | set_cmd_completer (c, signal_completer); | |
3330 | ||
3331 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3332 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3333 | Usage: queue-signal SIGNAL\n\ | |
3334 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3335 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3336 | \n\ | |
3337 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3338 | the current thread. This is useful in cases where the program stopped\n\ | |
3339 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3340 | \n\ | |
3341 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3342 | the current thread only.")); | |
de0bea00 | 3343 | set_cmd_completer (c, signal_completer); |
c906108c | 3344 | |
1bedd215 AC |
3345 | add_com ("stepi", class_run, stepi_command, _("\ |
3346 | Step one instruction exactly.\n\ | |
486c7739 MF |
3347 | Usage: stepi [N]\n\ |
3348 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3349 | reason).")); |
c906108c SS |
3350 | add_com_alias ("si", "stepi", class_alias, 0); |
3351 | ||
1bedd215 AC |
3352 | add_com ("nexti", class_run, nexti_command, _("\ |
3353 | Step one instruction, but proceed through subroutine calls.\n\ | |
486c7739 MF |
3354 | Usage: nexti [N]\n\ |
3355 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3356 | reason).")); |
c906108c SS |
3357 | add_com_alias ("ni", "nexti", class_alias, 0); |
3358 | ||
1bedd215 AC |
3359 | add_com ("finish", class_run, finish_command, _("\ |
3360 | Execute until selected stack frame returns.\n\ | |
486c7739 | 3361 | Usage: finish\n\ |
1bedd215 | 3362 | Upon return, the value returned is printed and put in the value history.")); |
0e479716 | 3363 | add_com_alias ("fin", "finish", class_run, 1); |
c906108c | 3364 | |
1bedd215 AC |
3365 | add_com ("next", class_run, next_command, _("\ |
3366 | Step program, proceeding through subroutine calls.\n\ | |
486c7739 MF |
3367 | Usage: next [N]\n\ |
3368 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3369 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3370 | the call, in effect treating it as a single source line.")); |
c906108c | 3371 | add_com_alias ("n", "next", class_run, 1); |
c906108c | 3372 | |
1bedd215 AC |
3373 | add_com ("step", class_run, step_command, _("\ |
3374 | Step program until it reaches a different source line.\n\ | |
486c7739 MF |
3375 | Usage: step [N]\n\ |
3376 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3377 | reason).")); |
c906108c SS |
3378 | add_com_alias ("s", "step", class_run, 1); |
3379 | ||
1bedd215 AC |
3380 | c = add_com ("until", class_run, until_command, _("\ |
3381 | Execute until the program reaches a source line greater than the current\n\ | |
3e43a32a MS |
3382 | or a specified location (same args as break command) within the current \ |
3383 | frame.")); | |
5ba2abeb | 3384 | set_cmd_completer (c, location_completer); |
c906108c | 3385 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 3386 | |
1bedd215 | 3387 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3388 | Continue the program up to the given location (same form as args for break \ |
3389 | command).\n\ | |
1bedd215 | 3390 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3391 | set_cmd_completer (c, location_completer); |
3392 | ||
1bedd215 AC |
3393 | c = add_com ("jump", class_run, jump_command, _("\ |
3394 | Continue program being debugged at specified line or address.\n\ | |
486c7739 | 3395 | Usage: jump <location>\n\ |
c906108c | 3396 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3397 | for an address to start at.")); |
5ba2abeb | 3398 | set_cmd_completer (c, location_completer); |
c1d780c2 | 3399 | add_com_alias ("j", "jump", class_run, 1); |
c906108c | 3400 | |
df983543 | 3401 | add_com ("continue", class_run, continue_command, _("\ |
1bedd215 | 3402 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3403 | Usage: continue [N]\n\ |
c906108c SS |
3404 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3405 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3406 | the breakpoint won't break until the Nth time it is reached).\n\ |
3407 | \n\ | |
3408 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3409 | otherwise all the threads in the program are continued. To \n\ | |
3410 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3411 | Specifying -a and an ignore count simultaneously is an error.")); | |
c906108c SS |
3412 | add_com_alias ("c", "cont", class_run, 1); |
3413 | add_com_alias ("fg", "cont", class_run, 1); | |
3414 | ||
1bedd215 AC |
3415 | c = add_com ("run", class_run, run_command, _("\ |
3416 | Start debugged program. You may specify arguments to give it.\n\ | |
c906108c | 3417 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ |
3e43a32a MS |
3418 | Input and output redirection with \">\", \"<\", or \">>\" are also \ |
3419 | allowed.\n\n\ | |
3420 | With no arguments, uses arguments last specified (with \"run\" \ | |
3421 | or \"set args\").\n\ | |
c906108c | 3422 | To cancel previous arguments and run with no arguments,\n\ |
1bedd215 | 3423 | use \"set args\" without arguments.")); |
5ba2abeb | 3424 | set_cmd_completer (c, filename_completer); |
c906108c | 3425 | add_com_alias ("r", "run", class_run, 1); |
c906108c | 3426 | |
1bedd215 | 3427 | c = add_com ("start", class_run, start_command, _("\ |
a4d5f2e0 JB |
3428 | Run the debugged program until the beginning of the main procedure.\n\ |
3429 | You may specify arguments to give to your program, just as with the\n\ | |
1bedd215 | 3430 | \"run\" command.")); |
a4d5f2e0 JB |
3431 | set_cmd_completer (c, filename_completer); |
3432 | ||
0a07590b | 3433 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3434 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3435 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3436 | otherwise all the threads in the program are stopped. To \n\ | |
3437 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3438 | |
71c24708 | 3439 | c = add_info ("registers", nofp_registers_info, _("\ |
1bedd215 AC |
3440 | List of integer registers and their contents, for selected stack frame.\n\ |
3441 | Register name as argument means describe only that register.")); | |
7194c49b | 3442 | add_info_alias ("r", "registers", 1); |
71c24708 | 3443 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3444 | |
71c24708 | 3445 | c = add_info ("all-registers", all_registers_info, _("\ |
1bedd215 AC |
3446 | List of all registers and their contents, for selected stack frame.\n\ |
3447 | Register name as argument means describe only that register.")); | |
71c24708 | 3448 | set_cmd_completer (c, reg_or_group_completer); |
c906108c SS |
3449 | |
3450 | add_info ("program", program_info, | |
1bedd215 | 3451 | _("Execution status of the program.")); |
c906108c SS |
3452 | |
3453 | add_info ("float", float_info, | |
1bedd215 | 3454 | _("Print the status of the floating point unit\n")); |
c906108c | 3455 | |
e76f1f2e | 3456 | add_info ("vector", vector_info, |
1bedd215 | 3457 | _("Print the status of the vector unit\n")); |
145b16a9 UW |
3458 | |
3459 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3460 | _("\ | |
3461 | Show /proc process information about any running process.\n\ | |
3462 | Specify any process id, or use the program being debugged by default."), | |
3463 | &info_proc_cmdlist, "info proc ", | |
3464 | 1/*allow-unknown*/, &infolist); | |
3465 | ||
3466 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
3467 | List of mapped memory regions."), | |
3468 | &info_proc_cmdlist); | |
3469 | ||
3470 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3471 | List process info from /proc/PID/stat."), | |
3472 | &info_proc_cmdlist); | |
3473 | ||
3474 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3475 | List process info from /proc/PID/status."), | |
3476 | &info_proc_cmdlist); | |
3477 | ||
3478 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
3479 | List current working directory of the process."), | |
3480 | &info_proc_cmdlist); | |
3481 | ||
3482 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
3483 | List command line arguments of the process."), | |
3484 | &info_proc_cmdlist); | |
3485 | ||
3486 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
3487 | List absolute filename for executable of the process."), | |
3488 | &info_proc_cmdlist); | |
3489 | ||
3490 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ | |
3491 | List all available /proc info."), | |
3492 | &info_proc_cmdlist); | |
c906108c | 3493 | } |