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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 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" |
0747795c | 28 | #include "common/environ.h" |
c906108c SS |
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> |
76727919 | 45 | #include "observable.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" |
5ed8105e | 61 | #include "common/gdb_optional.h" |
b46a8d7c | 62 | #include "source.h" |
d5551862 | 63 | |
a58dd373 EZ |
64 | /* Local functions: */ |
65 | ||
a14ed312 | 66 | static void until_next_command (int); |
c906108c | 67 | |
0b39b52e | 68 | static void step_1 (int, int, const char *); |
c906108c | 69 | |
c906108c | 70 | #define ERROR_NO_INFERIOR \ |
8a3fe4f8 | 71 | if (!target_has_execution) error (_("The program is not being run.")); |
c906108c | 72 | |
3e43a32a MS |
73 | /* Scratch area where string containing arguments to give to the |
74 | program will be stored by 'set args'. As soon as anything is | |
75 | stored, notice_args_set will move it into per-inferior storage. | |
1777feb0 | 76 | Arguments are separated by spaces. Empty string (pointer to '\0') |
3e43a32a | 77 | means no args. */ |
c906108c | 78 | |
3f81c18a | 79 | static char *inferior_args_scratch; |
c906108c | 80 | |
d092c5a2 SDJ |
81 | /* Scratch area where the new cwd will be stored by 'set cwd'. */ |
82 | ||
83 | static char *inferior_cwd_scratch; | |
84 | ||
3f81c18a VP |
85 | /* Scratch area where 'set inferior-tty' will store user-provided value. |
86 | We'll immediate copy it into per-inferior storage. */ | |
552c04a7 | 87 | |
3f81c18a | 88 | static char *inferior_io_terminal_scratch; |
c906108c SS |
89 | |
90 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
91 | Since various parts of infrun.c test this to see whether there is a program | |
92 | being debugged it should be nonzero (currently 3 is used) for remote | |
93 | debugging. */ | |
94 | ||
39f77062 | 95 | ptid_t inferior_ptid; |
c906108c | 96 | |
c906108c SS |
97 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
98 | ||
aa7d318d | 99 | enum stop_stack_kind stop_stack_dummy; |
c906108c SS |
100 | |
101 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
102 | process. */ | |
103 | ||
104 | int stopped_by_random_signal; | |
105 | ||
98882a26 PA |
106 | /* See inferior.h. */ |
107 | ||
108 | int startup_with_shell = 1; | |
109 | ||
c906108c | 110 | \f |
1777feb0 | 111 | /* Accessor routines. */ |
07091751 | 112 | |
3f81c18a VP |
113 | /* Set the io terminal for the current inferior. Ownership of |
114 | TERMINAL_NAME is not transferred. */ | |
115 | ||
3cb3b8df BR |
116 | void |
117 | set_inferior_io_terminal (const char *terminal_name) | |
118 | { | |
3f81c18a | 119 | xfree (current_inferior ()->terminal); |
0a1ddfa6 SM |
120 | |
121 | if (terminal_name != NULL && *terminal_name != '\0') | |
122 | current_inferior ()->terminal = xstrdup (terminal_name); | |
123 | else | |
124 | current_inferior ()->terminal = NULL; | |
3cb3b8df BR |
125 | } |
126 | ||
127 | const char * | |
128 | get_inferior_io_terminal (void) | |
129 | { | |
3f81c18a VP |
130 | return current_inferior ()->terminal; |
131 | } | |
132 | ||
133 | static void | |
eb4c3f4a | 134 | set_inferior_tty_command (const char *args, int from_tty, |
3f81c18a VP |
135 | struct cmd_list_element *c) |
136 | { | |
137 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
138 | Now route it to current inferior. */ | |
139 | set_inferior_io_terminal (inferior_io_terminal_scratch); | |
140 | } | |
141 | ||
142 | static void | |
143 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
144 | struct cmd_list_element *c, const char *value) | |
145 | { | |
146 | /* Note that we ignore the passed-in value in favor of computing it | |
147 | directly. */ | |
275f2e57 | 148 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
abbb1732 | 149 | |
275f2e57 DJ |
150 | if (inferior_io_terminal == NULL) |
151 | inferior_io_terminal = ""; | |
3f81c18a | 152 | fprintf_filtered (gdb_stdout, |
275f2e57 DJ |
153 | _("Terminal for future runs of program being debugged " |
154 | "is \"%s\".\n"), inferior_io_terminal); | |
3cb3b8df BR |
155 | } |
156 | ||
cbaaa0ca | 157 | const char * |
07091751 FN |
158 | get_inferior_args (void) |
159 | { | |
3f81c18a | 160 | if (current_inferior ()->argc != 0) |
552c04a7 | 161 | { |
3f81c18a | 162 | char *n; |
552c04a7 | 163 | |
3f81c18a VP |
164 | n = construct_inferior_arguments (current_inferior ()->argc, |
165 | current_inferior ()->argv); | |
166 | set_inferior_args (n); | |
167 | xfree (n); | |
552c04a7 TT |
168 | } |
169 | ||
3f81c18a VP |
170 | if (current_inferior ()->args == NULL) |
171 | current_inferior ()->args = xstrdup (""); | |
552c04a7 | 172 | |
3f81c18a | 173 | return current_inferior ()->args; |
07091751 FN |
174 | } |
175 | ||
3f81c18a VP |
176 | /* Set the arguments for the current inferior. Ownership of |
177 | NEWARGS is not transferred. */ | |
178 | ||
179 | void | |
0b39b52e | 180 | set_inferior_args (const char *newargs) |
07091751 | 181 | { |
3f81c18a VP |
182 | xfree (current_inferior ()->args); |
183 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; | |
184 | current_inferior ()->argc = 0; | |
185 | current_inferior ()->argv = 0; | |
07091751 | 186 | } |
c5aa993b | 187 | |
552c04a7 TT |
188 | void |
189 | set_inferior_args_vector (int argc, char **argv) | |
190 | { | |
3f81c18a VP |
191 | current_inferior ()->argc = argc; |
192 | current_inferior ()->argv = argv; | |
552c04a7 TT |
193 | } |
194 | ||
195 | /* Notice when `set args' is run. */ | |
6339bfc4 | 196 | |
552c04a7 | 197 | static void |
eb4c3f4a | 198 | set_args_command (const char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 199 | { |
3f81c18a VP |
200 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
201 | Now route it to current inferior. */ | |
202 | set_inferior_args (inferior_args_scratch); | |
552c04a7 TT |
203 | } |
204 | ||
205 | /* Notice when `show args' is run. */ | |
6339bfc4 | 206 | |
552c04a7 | 207 | static void |
3f81c18a VP |
208 | show_args_command (struct ui_file *file, int from_tty, |
209 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 210 | { |
258c00cc TT |
211 | /* Note that we ignore the passed-in value in favor of computing it |
212 | directly. */ | |
213 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
552c04a7 TT |
214 | } |
215 | ||
bc3b087d | 216 | /* See common/common-inferior.h. */ |
d092c5a2 | 217 | |
bc3b087d | 218 | void |
d092c5a2 SDJ |
219 | set_inferior_cwd (const char *cwd) |
220 | { | |
221 | struct inferior *inf = current_inferior (); | |
222 | ||
223 | gdb_assert (inf != NULL); | |
224 | ||
225 | if (cwd == NULL) | |
226 | inf->cwd.reset (); | |
227 | else | |
228 | inf->cwd.reset (xstrdup (cwd)); | |
229 | } | |
230 | ||
231 | /* See common/common-inferior.h. */ | |
232 | ||
233 | const char * | |
234 | get_inferior_cwd () | |
235 | { | |
236 | return current_inferior ()->cwd.get (); | |
237 | } | |
238 | ||
239 | /* Handle the 'set cwd' command. */ | |
240 | ||
241 | static void | |
eb4c3f4a | 242 | set_cwd_command (const char *args, int from_tty, struct cmd_list_element *c) |
d092c5a2 SDJ |
243 | { |
244 | if (*inferior_cwd_scratch == '\0') | |
245 | set_inferior_cwd (NULL); | |
246 | else | |
247 | set_inferior_cwd (inferior_cwd_scratch); | |
248 | } | |
249 | ||
250 | /* Handle the 'show cwd' command. */ | |
251 | ||
252 | static void | |
253 | show_cwd_command (struct ui_file *file, int from_tty, | |
254 | struct cmd_list_element *c, const char *value) | |
255 | { | |
256 | const char *cwd = get_inferior_cwd (); | |
257 | ||
258 | if (cwd == NULL) | |
259 | fprintf_filtered (gdb_stdout, | |
260 | _("\ | |
261 | You have not set the inferior's current working directory.\n\ | |
bc3b087d SDJ |
262 | The inferior will inherit GDB's cwd if native debugging, or the remote\n\ |
263 | server's cwd if remote debugging.\n")); | |
d092c5a2 SDJ |
264 | else |
265 | fprintf_filtered (gdb_stdout, | |
266 | _("Current working directory that will be used " | |
267 | "when starting the inferior is \"%s\".\n"), cwd); | |
268 | } | |
269 | ||
c2a727fa TT |
270 | \f |
271 | /* Compute command-line string given argument vector. This does the | |
272 | same shell processing as fork_inferior. */ | |
6339bfc4 | 273 | |
c2a727fa | 274 | char * |
bd57a748 | 275 | construct_inferior_arguments (int argc, char **argv) |
c2a727fa TT |
276 | { |
277 | char *result; | |
278 | ||
98882a26 | 279 | if (startup_with_shell) |
c2a727fa | 280 | { |
5d60742e EZ |
281 | #ifdef __MINGW32__ |
282 | /* This holds all the characters considered special to the | |
283 | Windows shells. */ | |
a121b7c1 PA |
284 | static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n"; |
285 | static const char quote = '"'; | |
5d60742e | 286 | #else |
c2a727fa TT |
287 | /* This holds all the characters considered special to the |
288 | typical Unix shells. We include `^' because the SunOS | |
289 | /bin/sh treats it as a synonym for `|'. */ | |
a121b7c1 PA |
290 | static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n"; |
291 | static const char quote = '\''; | |
5d60742e | 292 | #endif |
c2a727fa TT |
293 | int i; |
294 | int length = 0; | |
295 | char *out, *cp; | |
296 | ||
297 | /* We over-compute the size. It shouldn't matter. */ | |
298 | for (i = 0; i < argc; ++i) | |
c2226152 | 299 | length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0'); |
c2a727fa TT |
300 | |
301 | result = (char *) xmalloc (length); | |
302 | out = result; | |
303 | ||
304 | for (i = 0; i < argc; ++i) | |
305 | { | |
306 | if (i > 0) | |
307 | *out++ = ' '; | |
308 | ||
03c6228e AS |
309 | /* Need to handle empty arguments specially. */ |
310 | if (argv[i][0] == '\0') | |
c2a727fa | 311 | { |
5d60742e EZ |
312 | *out++ = quote; |
313 | *out++ = quote; | |
03c6228e AS |
314 | } |
315 | else | |
316 | { | |
5d60742e EZ |
317 | #ifdef __MINGW32__ |
318 | int quoted = 0; | |
319 | ||
320 | if (strpbrk (argv[i], special)) | |
321 | { | |
322 | quoted = 1; | |
323 | *out++ = quote; | |
324 | } | |
325 | #endif | |
03c6228e AS |
326 | for (cp = argv[i]; *cp; ++cp) |
327 | { | |
c2226152 AS |
328 | if (*cp == '\n') |
329 | { | |
330 | /* A newline cannot be quoted with a backslash (it | |
331 | just disappears), only by putting it inside | |
332 | quotes. */ | |
5d60742e | 333 | *out++ = quote; |
c2226152 | 334 | *out++ = '\n'; |
5d60742e | 335 | *out++ = quote; |
c2226152 AS |
336 | } |
337 | else | |
338 | { | |
5d60742e EZ |
339 | #ifdef __MINGW32__ |
340 | if (*cp == quote) | |
341 | #else | |
c2226152 | 342 | if (strchr (special, *cp) != NULL) |
5d60742e | 343 | #endif |
c2226152 AS |
344 | *out++ = '\\'; |
345 | *out++ = *cp; | |
346 | } | |
03c6228e | 347 | } |
5d60742e EZ |
348 | #ifdef __MINGW32__ |
349 | if (quoted) | |
350 | *out++ = quote; | |
351 | #endif | |
c2a727fa TT |
352 | } |
353 | } | |
354 | *out = '\0'; | |
355 | } | |
356 | else | |
357 | { | |
358 | /* In this case we can't handle arguments that contain spaces, | |
359 | tabs, or newlines -- see breakup_args(). */ | |
360 | int i; | |
361 | int length = 0; | |
362 | ||
363 | for (i = 0; i < argc; ++i) | |
364 | { | |
365 | char *cp = strchr (argv[i], ' '); | |
366 | if (cp == NULL) | |
367 | cp = strchr (argv[i], '\t'); | |
368 | if (cp == NULL) | |
369 | cp = strchr (argv[i], '\n'); | |
370 | if (cp != NULL) | |
3e43a32a MS |
371 | error (_("can't handle command-line " |
372 | "argument containing whitespace")); | |
c2a727fa TT |
373 | length += strlen (argv[i]) + 1; |
374 | } | |
375 | ||
376 | result = (char *) xmalloc (length); | |
377 | result[0] = '\0'; | |
378 | for (i = 0; i < argc; ++i) | |
379 | { | |
380 | if (i > 0) | |
381 | strcat (result, " "); | |
382 | strcat (result, argv[i]); | |
383 | } | |
384 | } | |
385 | ||
386 | return result; | |
387 | } | |
552c04a7 TT |
388 | \f |
389 | ||
6c4486e6 PA |
390 | /* This function strips the '&' character (indicating background |
391 | execution) that is added as *the last* of the arguments ARGS of a | |
392 | command. A copy of the incoming ARGS without the '&' is returned, | |
393 | unless the resulting string after stripping is empty, in which case | |
394 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
395 | whether the '&' character was found. */ | |
6339bfc4 | 396 | |
6be9a197 | 397 | static gdb::unique_xmalloc_ptr<char> |
6c4486e6 | 398 | strip_bg_char (const char *args, int *bg_char_p) |
43ff13b4 | 399 | { |
6c4486e6 | 400 | const char *p; |
c5aa993b | 401 | |
6c4486e6 PA |
402 | if (args == NULL || *args == '\0') |
403 | { | |
404 | *bg_char_p = 0; | |
405 | return NULL; | |
406 | } | |
c5aa993b | 407 | |
6c4486e6 PA |
408 | p = args + strlen (args); |
409 | if (p[-1] == '&') | |
43ff13b4 | 410 | { |
6c4486e6 PA |
411 | p--; |
412 | while (p > args && isspace (p[-1])) | |
413 | p--; | |
414 | ||
415 | *bg_char_p = 1; | |
416 | if (p != args) | |
6be9a197 TT |
417 | return gdb::unique_xmalloc_ptr<char> |
418 | (savestring (args, p - args)); | |
6c4486e6 | 419 | else |
6be9a197 | 420 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
43ff13b4 | 421 | } |
6c4486e6 PA |
422 | |
423 | *bg_char_p = 0; | |
6be9a197 | 424 | return gdb::unique_xmalloc_ptr<char> (xstrdup (args)); |
43ff13b4 JM |
425 | } |
426 | ||
281b533b DJ |
427 | /* Common actions to take after creating any sort of inferior, by any |
428 | means (running, attaching, connecting, et cetera). The target | |
429 | should be stopped. */ | |
430 | ||
431 | void | |
432 | post_create_inferior (struct target_ops *target, int from_tty) | |
433 | { | |
ce406537 | 434 | |
b79599ff | 435 | /* Be sure we own the terminal in case write operations are performed. */ |
223ffa71 | 436 | target_terminal::ours_for_output (); |
b79599ff | 437 | |
424163ea DJ |
438 | /* If the target hasn't taken care of this already, do it now. |
439 | Targets which need to access registers during to_open, | |
440 | to_create_inferior, or to_attach should do it earlier; but many | |
441 | don't need to. */ | |
442 | target_find_description (); | |
443 | ||
ce406537 PA |
444 | /* Now that we know the register layout, retrieve current PC. But |
445 | if the PC is unavailable (e.g., we're opening a core file with | |
446 | missing registers info), ignore it. */ | |
f2ffa92b PA |
447 | thread_info *thr = inferior_thread (); |
448 | ||
449 | thr->suspend.stop_pc = 0; | |
a70b8144 | 450 | try |
ce406537 | 451 | { |
f2ffa92b | 452 | thr->suspend.stop_pc = regcache_read_pc (get_current_regcache ()); |
ce406537 | 453 | } |
230d2906 | 454 | catch (const gdb_exception_error &ex) |
7556d4a4 PA |
455 | { |
456 | if (ex.error != NOT_AVAILABLE_ERROR) | |
eedc3f4f | 457 | throw; |
7556d4a4 | 458 | } |
f698437e | 459 | |
50c71eaf PA |
460 | if (exec_bfd) |
461 | { | |
2eff07b3 PP |
462 | const unsigned solib_add_generation |
463 | = current_program_space->solib_add_generation; | |
464 | ||
9353355f DJ |
465 | /* Create the hooks to handle shared library load and unload |
466 | events. */ | |
268a4a75 | 467 | solib_create_inferior_hook (from_tty); |
268a4a75 | 468 | |
2eff07b3 PP |
469 | if (current_program_space->solib_add_generation == solib_add_generation) |
470 | { | |
471 | /* The platform-specific hook should load initial shared libraries, | |
472 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
473 | targets should be fixed anyway. Call it only after the solib | |
474 | target has been initialized by solib_create_inferior_hook. */ | |
475 | ||
476 | if (info_verbose) | |
477 | warning (_("platform-specific solib_create_inferior_hook did " | |
478 | "not load initial shared libraries.")); | |
479 | ||
480 | /* If the solist is global across processes, there's no need to | |
481 | refetch it here. */ | |
f5656ead | 482 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 483 | solib_add (NULL, 0, auto_solib_add); |
2eff07b3 | 484 | } |
9353355f DJ |
485 | } |
486 | ||
ea5d7a99 PM |
487 | /* If the user sets watchpoints before execution having started, |
488 | then she gets software watchpoints, because GDB can't know which | |
489 | target will end up being pushed, or if it supports hardware | |
490 | watchpoints or not. breakpoint_re_set takes care of promoting | |
491 | watchpoints to hardware watchpoints if possible, however, if this | |
492 | new inferior doesn't load shared libraries or we don't pull in | |
493 | symbols from any other source on this target/arch, | |
494 | breakpoint_re_set is never called. Call it now so that software | |
495 | watchpoints get a chance to be promoted to hardware watchpoints | |
496 | if the now pushed target supports hardware watchpoints. */ | |
497 | breakpoint_re_set (); | |
498 | ||
76727919 | 499 | gdb::observers::inferior_created.notify (target, from_tty); |
281b533b DJ |
500 | } |
501 | ||
a4d5f2e0 JB |
502 | /* Kill the inferior if already running. This function is designed |
503 | to be called when we are about to start the execution of the program | |
504 | from the beginning. Ask the user to confirm that he wants to restart | |
505 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 506 | |
8edfe269 | 507 | static void |
a4d5f2e0 JB |
508 | kill_if_already_running (int from_tty) |
509 | { | |
d7e15655 | 510 | if (inferior_ptid != null_ptid && target_has_execution) |
c906108c | 511 | { |
8edfe269 DJ |
512 | /* Bail out before killing the program if we will not be able to |
513 | restart it. */ | |
514 | target_require_runnable (); | |
515 | ||
adf40b2e | 516 | if (from_tty |
9e2f0ad4 HZ |
517 | && !query (_("The program being debugged has been started already.\n\ |
518 | Start it from the beginning? "))) | |
8a3fe4f8 | 519 | error (_("Program not restarted.")); |
c906108c | 520 | target_kill (); |
c906108c | 521 | } |
a4d5f2e0 JB |
522 | } |
523 | ||
329ea579 | 524 | /* See inferior.h. */ |
8bc2fe48 | 525 | |
329ea579 | 526 | void |
8bc2fe48 PA |
527 | prepare_execution_command (struct target_ops *target, int background) |
528 | { | |
529 | /* If we get a request for running in the bg but the target | |
530 | doesn't support it, error out. */ | |
f6ac5f3d | 531 | if (background && !target->can_async_p ()) |
8bc2fe48 PA |
532 | error (_("Asynchronous execution not supported on this target.")); |
533 | ||
0b333c5e | 534 | if (!background) |
8bc2fe48 | 535 | { |
0b333c5e PA |
536 | /* If we get a request for running in the fg, then we need to |
537 | simulate synchronous (fg) execution. Note no cleanup is | |
538 | necessary for this. stdin is re-enabled whenever an error | |
539 | reaches the top level. */ | |
a8836c93 | 540 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
541 | } |
542 | } | |
543 | ||
4e5a4f58 JB |
544 | /* Determine how the new inferior will behave. */ |
545 | ||
546 | enum run_how | |
547 | { | |
548 | /* Run program without any explicit stop during startup. */ | |
549 | RUN_NORMAL, | |
550 | ||
551 | /* Stop at the beginning of the program's main function. */ | |
552 | RUN_STOP_AT_MAIN, | |
553 | ||
554 | /* Stop at the first instruction of the program. */ | |
555 | RUN_STOP_AT_FIRST_INSN | |
556 | }; | |
557 | ||
558 | /* Implement the "run" command. Force a stop during program start if | |
559 | requested by RUN_HOW. */ | |
f67a969f | 560 | |
a4d5f2e0 | 561 | static void |
0b39b52e | 562 | run_command_1 (const char *args, int from_tty, enum run_how run_how) |
a4d5f2e0 | 563 | { |
7c5ded6a | 564 | const char *exec_file; |
79a45e25 | 565 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 566 | struct target_ops *run_target; |
6c4486e6 | 567 | int async_exec; |
c906108c | 568 | |
a4d5f2e0 JB |
569 | dont_repeat (); |
570 | ||
571 | kill_if_already_running (from_tty); | |
3c35e65b UW |
572 | |
573 | init_wait_for_inferior (); | |
c906108c SS |
574 | clear_breakpoint_hit_counts (); |
575 | ||
fd79ecee DJ |
576 | /* Clean up any leftovers from other runs. Some other things from |
577 | this function should probably be moved into target_pre_inferior. */ | |
578 | target_pre_inferior (from_tty); | |
579 | ||
39ad761d JB |
580 | /* The comment here used to read, "The exec file is re-read every |
581 | time we do a generic_mourn_inferior, so we just have to worry | |
582 | about the symbol file." The `generic_mourn_inferior' function | |
583 | gets called whenever the program exits. However, suppose the | |
584 | program exits, and *then* the executable file changes? We need | |
585 | to check again here. Since reopen_exec_file doesn't do anything | |
586 | if the timestamp hasn't changed, I don't see the harm. */ | |
587 | reopen_exec_file (); | |
c906108c SS |
588 | reread_symbols (); |
589 | ||
6be9a197 TT |
590 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
591 | args = stripped.get (); | |
f67a969f | 592 | |
8bc2fe48 PA |
593 | /* Do validation and preparation before possibly changing anything |
594 | in the inferior. */ | |
39ad761d | 595 | |
b3ccfe11 TT |
596 | run_target = find_run_target (); |
597 | ||
8bc2fe48 PA |
598 | prepare_execution_command (run_target, async_exec); |
599 | ||
f6ac5f3d | 600 | if (non_stop && !run_target->supports_non_stop ()) |
9908b566 VP |
601 | error (_("The target does not support running in non-stop mode.")); |
602 | ||
8bc2fe48 PA |
603 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
604 | ||
4e5a4f58 JB |
605 | /* Insert temporary breakpoint in main function if requested. */ |
606 | if (run_how == RUN_STOP_AT_MAIN) | |
8bc2fe48 PA |
607 | tbreak_command (main_name (), 0); |
608 | ||
7c5ded6a | 609 | exec_file = get_exec_file (0); |
8bc2fe48 | 610 | |
c906108c SS |
611 | /* We keep symbols from add-symbol-file, on the grounds that the |
612 | user might want to add some symbols before running the program | |
613 | (right?). But sometimes (dynamic loading where the user manually | |
614 | introduces the new symbols with add-symbol-file), the code which | |
615 | the symbols describe does not persist between runs. Currently | |
616 | the user has to manually nuke all symbols between runs if they | |
617 | want them to go away (PR 2207). This is probably reasonable. */ | |
618 | ||
8bc2fe48 PA |
619 | /* If there were other args, beside '&', process them. */ |
620 | if (args != NULL) | |
621 | set_inferior_args (args); | |
c906108c SS |
622 | |
623 | if (from_tty) | |
624 | { | |
112e8700 SM |
625 | uiout->field_string (NULL, "Starting program"); |
626 | uiout->text (": "); | |
8b93c638 | 627 | if (exec_file) |
112e8700 SM |
628 | uiout->field_string ("execfile", exec_file); |
629 | uiout->spaces (1); | |
552c04a7 TT |
630 | /* We call get_inferior_args() because we might need to compute |
631 | the value now. */ | |
112e8700 SM |
632 | uiout->field_string ("infargs", get_inferior_args ()); |
633 | uiout->text ("\n"); | |
634 | uiout->flush (); | |
c906108c SS |
635 | } |
636 | ||
552c04a7 TT |
637 | /* We call get_inferior_args() because we might need to compute |
638 | the value now. */ | |
f6ac5f3d PA |
639 | run_target->create_inferior (exec_file, |
640 | std::string (get_inferior_args ()), | |
641 | current_inferior ()->environment.envp (), | |
642 | from_tty); | |
b3ccfe11 TT |
643 | /* to_create_inferior should push the target, so after this point we |
644 | shouldn't refer to run_target again. */ | |
645 | run_target = NULL; | |
281b533b | 646 | |
29f49a6a PA |
647 | /* We're starting off a new process. When we get out of here, in |
648 | non-stop mode, finish the state of all threads of that process, | |
649 | but leave other threads alone, as they may be stopped in internal | |
650 | events --- the frontend shouldn't see them as stopped. In | |
651 | all-stop, always finish the state of all threads, as we may be | |
652 | resuming more than just the new process. */ | |
731f534f PA |
653 | ptid_t finish_ptid = (non_stop |
654 | ? ptid_t (current_inferior ()->pid) | |
655 | : minus_one_ptid); | |
656 | scoped_finish_thread_state finish_state (finish_ptid); | |
29f49a6a | 657 | |
de1b3c3d PA |
658 | /* Pass zero for FROM_TTY, because at this point the "run" command |
659 | has done its thing; now we are setting up the running program. */ | |
8b88a78e | 660 | post_create_inferior (current_top_target (), 0); |
281b533b | 661 | |
4e5a4f58 JB |
662 | /* Queue a pending event so that the program stops immediately. */ |
663 | if (run_how == RUN_STOP_AT_FIRST_INSN) | |
664 | { | |
665 | thread_info *thr = inferior_thread (); | |
666 | thr->suspend.waitstatus_pending_p = 1; | |
667 | thr->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED; | |
668 | thr->suspend.waitstatus.value.sig = GDB_SIGNAL_0; | |
669 | } | |
670 | ||
74d1f91e JK |
671 | /* Start the target running. Do not use -1 continuation as it would skip |
672 | breakpoint right at the entry point. */ | |
64ce06e4 | 673 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 674 | |
29f49a6a PA |
675 | /* Since there was no error, there's no need to finish the thread |
676 | states here. */ | |
731f534f | 677 | finish_state.release (); |
29f49a6a | 678 | } |
c906108c | 679 | |
f67a969f | 680 | static void |
0b39b52e | 681 | run_command (const char *args, int from_tty) |
f67a969f | 682 | { |
4e5a4f58 | 683 | run_command_1 (args, from_tty, RUN_NORMAL); |
f67a969f JB |
684 | } |
685 | ||
a4d5f2e0 JB |
686 | /* Start the execution of the program up until the beginning of the main |
687 | program. */ | |
688 | ||
689 | static void | |
0b39b52e | 690 | start_command (const char *args, int from_tty) |
a4d5f2e0 JB |
691 | { |
692 | /* Some languages such as Ada need to search inside the program | |
693 | minimal symbols for the location where to put the temporary | |
694 | breakpoint before starting. */ | |
695 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 696 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 697 | |
f67a969f | 698 | /* Run the program until reaching the main procedure... */ |
4e5a4f58 JB |
699 | run_command_1 (args, from_tty, RUN_STOP_AT_MAIN); |
700 | } | |
701 | ||
702 | /* Start the execution of the program stopping at the first | |
703 | instruction. */ | |
704 | ||
705 | static void | |
0b39b52e | 706 | starti_command (const char *args, int from_tty) |
4e5a4f58 JB |
707 | { |
708 | run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN); | |
a4d5f2e0 JB |
709 | } |
710 | ||
8cae4b3f PA |
711 | static int |
712 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
713 | { | |
74531fed PA |
714 | /* We go through all threads individually instead of compressing |
715 | into a single target `resume_all' request, because some threads | |
716 | may be stopped in internal breakpoints/events, or stopped waiting | |
717 | for its turn in the displaced stepping queue (that is, they are | |
718 | running && !executing). The target side has no idea about why | |
719 | the thread is stopped, so a `resume_all' command would resume too | |
720 | much. If/when GDB gains a way to tell the target `hold this | |
721 | thread stopped until I say otherwise', then we can optimize | |
722 | this. */ | |
00431a78 | 723 | if (thread->state != THREAD_STOPPED) |
8cae4b3f PA |
724 | return 0; |
725 | ||
00431a78 | 726 | switch_to_thread (thread); |
70509625 | 727 | clear_proceed_status (0); |
64ce06e4 | 728 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
729 | return 0; |
730 | } | |
731 | ||
70221824 | 732 | static void |
d729566a PA |
733 | ensure_valid_thread (void) |
734 | { | |
00431a78 PA |
735 | if (inferior_ptid == null_ptid |
736 | || inferior_thread ()->state == THREAD_EXITED) | |
3e43a32a | 737 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
738 | } |
739 | ||
573cda03 | 740 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 741 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
742 | disallow those commands. */ |
743 | ||
70221824 | 744 | static void |
573cda03 SS |
745 | ensure_not_tfind_mode (void) |
746 | { | |
747 | if (get_traceframe_number () >= 0) | |
3e43a32a | 748 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
749 | } |
750 | ||
3d3fef6b YQ |
751 | /* Throw an error indicating the current thread is running. */ |
752 | ||
753 | static void | |
754 | error_is_running (void) | |
755 | { | |
756 | error (_("Cannot execute this command while " | |
757 | "the selected thread is running.")); | |
758 | } | |
759 | ||
760 | /* Calls error_is_running if the current thread is running. */ | |
761 | ||
762 | static void | |
763 | ensure_not_running (void) | |
764 | { | |
00431a78 | 765 | if (inferior_thread ()->state == THREAD_RUNNING) |
3d3fef6b YQ |
766 | error_is_running (); |
767 | } | |
768 | ||
77ebaa5a VP |
769 | void |
770 | continue_1 (int all_threads) | |
771 | { | |
3d488bfc | 772 | ERROR_NO_INFERIOR; |
573cda03 | 773 | ensure_not_tfind_mode (); |
3d488bfc | 774 | |
77ebaa5a VP |
775 | if (non_stop && all_threads) |
776 | { | |
777 | /* Don't error out if the current thread is running, because | |
abbb1732 | 778 | there may be other stopped threads. */ |
77ebaa5a | 779 | |
5ed8105e PA |
780 | /* Backup current thread and selected frame and restore on scope |
781 | exit. */ | |
782 | scoped_restore_current_thread restore_thread; | |
77ebaa5a VP |
783 | |
784 | iterate_over_threads (proceed_thread_callback, NULL); | |
785 | ||
3b12939d | 786 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
787 | { |
788 | /* If all threads in the target were already running, | |
789 | proceed_thread_callback ends up never calling proceed, | |
790 | and so nothing calls this to put the inferior's terminal | |
791 | settings in effect and remove stdin from the event loop, | |
792 | which we must when running a foreground command. E.g.: | |
793 | ||
794 | (gdb) c -a& | |
795 | Continuing. | |
796 | <all threads are running now> | |
797 | (gdb) c -a | |
798 | Continuing. | |
799 | <no thread was resumed, but the inferior now owns the terminal> | |
800 | */ | |
223ffa71 | 801 | target_terminal::inferior (); |
0ff33695 | 802 | } |
77ebaa5a VP |
803 | } |
804 | else | |
805 | { | |
d729566a | 806 | ensure_valid_thread (); |
77ebaa5a | 807 | ensure_not_running (); |
70509625 | 808 | clear_proceed_status (0); |
64ce06e4 | 809 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
810 | } |
811 | } | |
812 | ||
8cae4b3f | 813 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 814 | |
1dd5fedc | 815 | static void |
0b39b52e | 816 | continue_command (const char *args, int from_tty) |
c906108c | 817 | { |
6c4486e6 | 818 | int async_exec; |
8cae4b3f | 819 | int all_threads = 0; |
6c4486e6 | 820 | |
c906108c SS |
821 | ERROR_NO_INFERIOR; |
822 | ||
1777feb0 | 823 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
824 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
825 | args = stripped.get (); | |
43ff13b4 | 826 | |
8cae4b3f PA |
827 | if (args != NULL) |
828 | { | |
61012eef | 829 | if (startswith (args, "-a")) |
8cae4b3f PA |
830 | { |
831 | all_threads = 1; | |
832 | args += sizeof ("-a") - 1; | |
833 | if (*args == '\0') | |
834 | args = NULL; | |
835 | } | |
836 | } | |
837 | ||
838 | if (!non_stop && all_threads) | |
839 | error (_("`-a' is meaningless in all-stop mode.")); | |
840 | ||
841 | if (args != NULL && all_threads) | |
3e43a32a MS |
842 | error (_("Can't resume all threads and specify " |
843 | "proceed count simultaneously.")); | |
8cae4b3f PA |
844 | |
845 | /* If we have an argument left, set proceed count of breakpoint we | |
846 | stopped at. */ | |
847 | if (args != NULL) | |
c906108c | 848 | { |
347bddb7 | 849 | bpstat bs = NULL; |
8671a17b PA |
850 | int num, stat; |
851 | int stopped = 0; | |
347bddb7 PA |
852 | struct thread_info *tp; |
853 | ||
854 | if (non_stop) | |
00431a78 | 855 | tp = inferior_thread (); |
347bddb7 PA |
856 | else |
857 | { | |
858 | ptid_t last_ptid; | |
859 | struct target_waitstatus ws; | |
860 | ||
861 | get_last_target_status (&last_ptid, &ws); | |
e09875d4 | 862 | tp = find_thread_ptid (last_ptid); |
347bddb7 PA |
863 | } |
864 | if (tp != NULL) | |
16c381f0 | 865 | bs = tp->control.stop_bpstat; |
8671a17b PA |
866 | |
867 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
868 | if (stat > 0) | |
869 | { | |
870 | set_ignore_count (num, | |
8cae4b3f | 871 | parse_and_eval_long (args) - 1, |
8671a17b PA |
872 | from_tty); |
873 | /* set_ignore_count prints a message ending with a period. | |
874 | So print two spaces before "Continuing.". */ | |
875 | if (from_tty) | |
876 | printf_filtered (" "); | |
877 | stopped = 1; | |
878 | } | |
879 | ||
880 | if (!stopped && from_tty) | |
c906108c SS |
881 | { |
882 | printf_filtered | |
883 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
884 | } | |
c906108c SS |
885 | } |
886 | ||
3b12939d PA |
887 | ERROR_NO_INFERIOR; |
888 | ensure_not_tfind_mode (); | |
889 | ||
890 | if (!non_stop || !all_threads) | |
891 | { | |
892 | ensure_valid_thread (); | |
893 | ensure_not_running (); | |
894 | } | |
895 | ||
8b88a78e | 896 | prepare_execution_command (current_top_target (), async_exec); |
3b12939d | 897 | |
c906108c | 898 | if (from_tty) |
a3f17187 | 899 | printf_filtered (_("Continuing.\n")); |
c906108c | 900 | |
77ebaa5a | 901 | continue_1 (all_threads); |
c906108c SS |
902 | } |
903 | \f | |
edb3359d DJ |
904 | /* Record the starting point of a "step" or "next" command. */ |
905 | ||
906 | static void | |
907 | set_step_frame (void) | |
908 | { | |
51abb421 | 909 | frame_info *frame = get_current_frame (); |
edb3359d | 910 | |
51abb421 | 911 | symtab_and_line sal = find_frame_sal (frame); |
64ce06e4 | 912 | set_step_info (frame, sal); |
51abb421 PA |
913 | |
914 | CORE_ADDR pc = get_frame_pc (frame); | |
915 | thread_info *tp = inferior_thread (); | |
64ce06e4 | 916 | tp->control.step_start_function = find_pc_function (pc); |
edb3359d DJ |
917 | } |
918 | ||
c906108c SS |
919 | /* Step until outside of current statement. */ |
920 | ||
c906108c | 921 | static void |
0b39b52e | 922 | step_command (const char *count_string, int from_tty) |
c906108c SS |
923 | { |
924 | step_1 (0, 0, count_string); | |
925 | } | |
926 | ||
927 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
928 | ||
c906108c | 929 | static void |
0b39b52e | 930 | next_command (const char *count_string, int from_tty) |
c906108c SS |
931 | { |
932 | step_1 (1, 0, count_string); | |
933 | } | |
934 | ||
935 | /* Likewise, but step only one instruction. */ | |
936 | ||
1dd5fedc | 937 | static void |
0b39b52e | 938 | stepi_command (const char *count_string, int from_tty) |
c906108c SS |
939 | { |
940 | step_1 (0, 1, count_string); | |
941 | } | |
942 | ||
1dd5fedc | 943 | static void |
0b39b52e | 944 | nexti_command (const char *count_string, int from_tty) |
c906108c SS |
945 | { |
946 | step_1 (1, 1, count_string); | |
947 | } | |
948 | ||
243a9253 PA |
949 | /* Data for the FSM that manages the step/next/stepi/nexti |
950 | commands. */ | |
951 | ||
46e3ed7f | 952 | struct step_command_fsm : public thread_fsm |
243a9253 | 953 | { |
243a9253 PA |
954 | /* How many steps left in a "step N"-like command. */ |
955 | int count; | |
956 | ||
957 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
958 | int skip_subroutines; | |
959 | ||
960 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
961 | int single_inst; | |
243a9253 | 962 | |
46e3ed7f TT |
963 | explicit step_command_fsm (struct interp *cmd_interp) |
964 | : thread_fsm (cmd_interp) | |
965 | { | |
966 | } | |
243a9253 | 967 | |
46e3ed7f TT |
968 | void clean_up (struct thread_info *thread) override; |
969 | bool should_stop (struct thread_info *thread) override; | |
970 | enum async_reply_reason do_async_reply_reason () override; | |
243a9253 PA |
971 | }; |
972 | ||
243a9253 PA |
973 | /* Prepare for a step/next/etc. command. Any target resource |
974 | allocated here is undone in the FSM's clean_up method. */ | |
975 | ||
976 | static void | |
977 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
978 | int skip_subroutines, int single_inst, | |
979 | int count, struct thread_info *thread) | |
980 | { | |
981 | sm->skip_subroutines = skip_subroutines; | |
982 | sm->single_inst = single_inst; | |
983 | sm->count = count; | |
243a9253 PA |
984 | |
985 | /* Leave the si command alone. */ | |
986 | if (!sm->single_inst || sm->skip_subroutines) | |
987 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
988 | ||
989 | thread->control.stepping_command = 1; | |
990 | } | |
991 | ||
992 | static int prepare_one_step (struct step_command_fsm *sm); | |
993 | ||
c906108c | 994 | static void |
0b39b52e | 995 | step_1 (int skip_subroutines, int single_inst, const char *count_string) |
c906108c | 996 | { |
243a9253 | 997 | int count; |
6c4486e6 | 998 | int async_exec; |
243a9253 PA |
999 | struct thread_info *thr; |
1000 | struct step_command_fsm *step_sm; | |
c5aa993b | 1001 | |
c906108c | 1002 | ERROR_NO_INFERIOR; |
573cda03 | 1003 | ensure_not_tfind_mode (); |
d729566a | 1004 | ensure_valid_thread (); |
94cc34af | 1005 | ensure_not_running (); |
43ff13b4 | 1006 | |
6be9a197 TT |
1007 | gdb::unique_xmalloc_ptr<char> stripped |
1008 | = strip_bg_char (count_string, &async_exec); | |
1009 | count_string = stripped.get (); | |
c5aa993b | 1010 | |
8b88a78e | 1011 | prepare_execution_command (current_top_target (), async_exec); |
43ff13b4 | 1012 | |
bb518678 | 1013 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 1014 | |
243a9253 | 1015 | clear_proceed_status (1); |
611c83ae | 1016 | |
243a9253 PA |
1017 | /* Setup the execution command state machine to handle all the COUNT |
1018 | steps. */ | |
1019 | thr = inferior_thread (); | |
46e3ed7f TT |
1020 | step_sm = new step_command_fsm (command_interp ()); |
1021 | thr->thread_fsm = step_sm; | |
611c83ae | 1022 | |
243a9253 PA |
1023 | step_command_fsm_prepare (step_sm, skip_subroutines, |
1024 | single_inst, count, thr); | |
c2d11a7d | 1025 | |
0b333c5e PA |
1026 | /* Do only one step for now, before returning control to the event |
1027 | loop. Let the continuation figure out how many other steps we | |
1028 | need to do, and handle them one at the time, through | |
1029 | step_once. */ | |
243a9253 PA |
1030 | if (!prepare_one_step (step_sm)) |
1031 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
1032 | else | |
1033 | { | |
3b12939d PA |
1034 | int proceeded; |
1035 | ||
243a9253 PA |
1036 | /* Stepped into an inline frame. Pretend that we've |
1037 | stopped. */ | |
46e3ed7f | 1038 | thr->thread_fsm->clean_up (thr); |
3b12939d PA |
1039 | proceeded = normal_stop (); |
1040 | if (!proceeded) | |
1041 | inferior_event_handler (INF_EXEC_COMPLETE, NULL); | |
1042 | all_uis_check_sync_execution_done (); | |
243a9253 | 1043 | } |
c2d11a7d | 1044 | } |
c906108c | 1045 | |
243a9253 PA |
1046 | /* Implementation of the 'should_stop' FSM method for stepping |
1047 | commands. Called after we are done with one step operation, to | |
1048 | check whether we need to step again, before we print the prompt and | |
1049 | return control to the user. If count is > 1, returns false, as we | |
1050 | will need to keep going. */ | |
6339bfc4 | 1051 | |
46e3ed7f TT |
1052 | bool |
1053 | step_command_fsm::should_stop (struct thread_info *tp) | |
c2d11a7d | 1054 | { |
243a9253 | 1055 | if (tp->control.stop_step) |
f13468d9 | 1056 | { |
243a9253 PA |
1057 | /* There are more steps to make, and we did stop due to |
1058 | ending a stepping range. Do another step. */ | |
46e3ed7f TT |
1059 | if (--count > 0) |
1060 | return prepare_one_step (this); | |
af679fd0 | 1061 | |
46e3ed7f | 1062 | set_finished (); |
f107f563 | 1063 | } |
af679fd0 | 1064 | |
46e3ed7f | 1065 | return true; |
c2d11a7d JM |
1066 | } |
1067 | ||
243a9253 | 1068 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 | 1069 | |
46e3ed7f TT |
1070 | void |
1071 | step_command_fsm::clean_up (struct thread_info *thread) | |
bfec99b2 | 1072 | { |
46e3ed7f | 1073 | if (!single_inst || 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 | ||
46e3ed7f TT |
1080 | enum async_reply_reason |
1081 | step_command_fsm::do_async_reply_reason () | |
243a9253 PA |
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 |
00431a78 | 1112 | && inline_skipped_frames (tp)) |
edb3359d | 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 | ||
00431a78 | 1120 | step_into_inline_frame (tp); |
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 | |
223ffa71 | 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. */ | |
46e3ed7f | 1171 | sm->set_finished (); |
243a9253 | 1172 | return 1; |
c906108c | 1173 | } |
c2d11a7d | 1174 | |
c906108c SS |
1175 | \f |
1176 | /* Continue program at specified address. */ | |
1177 | ||
1178 | static void | |
0b39b52e | 1179 | jump_command (const char *arg, int from_tty) |
c906108c | 1180 | { |
5af949e3 | 1181 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1182 | CORE_ADDR addr; |
c906108c SS |
1183 | struct symbol *fn; |
1184 | struct symbol *sfn; | |
6c4486e6 | 1185 | int async_exec; |
c5aa993b | 1186 | |
c906108c | 1187 | ERROR_NO_INFERIOR; |
573cda03 | 1188 | ensure_not_tfind_mode (); |
d729566a | 1189 | ensure_valid_thread (); |
94cc34af | 1190 | ensure_not_running (); |
c906108c | 1191 | |
1777feb0 | 1192 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1193 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1194 | arg = stripped.get (); | |
43ff13b4 | 1195 | |
8b88a78e | 1196 | prepare_execution_command (current_top_target (), async_exec); |
43ff13b4 | 1197 | |
c906108c | 1198 | if (!arg) |
e2e0b3e5 | 1199 | error_no_arg (_("starting address")); |
c906108c | 1200 | |
6c5b2ebe PA |
1201 | std::vector<symtab_and_line> sals |
1202 | = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); | |
1203 | if (sals.size () != 1) | |
1204 | error (_("Unreasonable jump request")); | |
c906108c | 1205 | |
6c5b2ebe PA |
1206 | symtab_and_line &sal = sals[0]; |
1207 | ||
c906108c | 1208 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1209 | error (_("No source file has been specified.")); |
c906108c | 1210 | |
1777feb0 | 1211 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1212 | |
1777feb0 | 1213 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1214 | fn = get_frame_function (get_current_frame ()); |
1215 | sfn = find_pc_function (sal.pc); | |
1216 | if (fn != NULL && sfn != fn) | |
1217 | { | |
9e2f0ad4 | 1218 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
de5ad195 | 1219 | SYMBOL_PRINT_NAME (fn))) |
c906108c | 1220 | { |
8a3fe4f8 | 1221 | error (_("Not confirmed.")); |
c906108c SS |
1222 | /* NOTREACHED */ |
1223 | } | |
1224 | } | |
1225 | ||
c5aa993b | 1226 | if (sfn != NULL) |
c906108c | 1227 | { |
253342b8 DE |
1228 | struct obj_section *section; |
1229 | ||
c906108c | 1230 | fixup_symbol_section (sfn, 0); |
08be3fe3 | 1231 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sfn), sfn); |
253342b8 DE |
1232 | if (section_is_overlay (section) |
1233 | && !section_is_mapped (section)) | |
c906108c | 1234 | { |
3e43a32a MS |
1235 | if (!query (_("WARNING!!! Destination is in " |
1236 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1237 | { |
8a3fe4f8 | 1238 | error (_("Not confirmed.")); |
c906108c SS |
1239 | /* NOTREACHED */ |
1240 | } | |
1241 | } | |
1242 | } | |
1243 | ||
c906108c SS |
1244 | addr = sal.pc; |
1245 | ||
1246 | if (from_tty) | |
1247 | { | |
a3f17187 | 1248 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1249 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1250 | printf_filtered (".\n"); |
1251 | } | |
1252 | ||
70509625 | 1253 | clear_proceed_status (0); |
64ce06e4 | 1254 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1255 | } |
c906108c | 1256 | \f |
c906108c SS |
1257 | /* Continue program giving it specified signal. */ |
1258 | ||
1259 | static void | |
0b39b52e | 1260 | signal_command (const char *signum_exp, int from_tty) |
c906108c | 1261 | { |
2ea28649 | 1262 | enum gdb_signal oursig; |
6c4486e6 | 1263 | int async_exec; |
c906108c SS |
1264 | |
1265 | dont_repeat (); /* Too dangerous. */ | |
1266 | ERROR_NO_INFERIOR; | |
573cda03 | 1267 | ensure_not_tfind_mode (); |
d729566a | 1268 | ensure_valid_thread (); |
94cc34af | 1269 | ensure_not_running (); |
c906108c | 1270 | |
32c1e744 | 1271 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1272 | gdb::unique_xmalloc_ptr<char> stripped |
1273 | = strip_bg_char (signum_exp, &async_exec); | |
1274 | signum_exp = stripped.get (); | |
32c1e744 | 1275 | |
8b88a78e | 1276 | prepare_execution_command (current_top_target (), async_exec); |
32c1e744 | 1277 | |
c906108c | 1278 | if (!signum_exp) |
e2e0b3e5 | 1279 | error_no_arg (_("signal number")); |
c906108c SS |
1280 | |
1281 | /* It would be even slicker to make signal names be valid expressions, | |
1282 | (the type could be "enum $signal" or some such), then the user could | |
1283 | assign them to convenience variables. */ | |
2ea28649 | 1284 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1285 | |
a493e3e2 | 1286 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1287 | { |
1288 | /* No, try numeric. */ | |
bb518678 | 1289 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1290 | |
1291 | if (num == 0) | |
a493e3e2 | 1292 | oursig = GDB_SIGNAL_0; |
c906108c | 1293 | else |
2ea28649 | 1294 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1295 | } |
1296 | ||
70509625 PA |
1297 | /* Look for threads other than the current that this command ends up |
1298 | resuming too (due to schedlock off), and warn if they'll get a | |
1299 | signal delivered. "signal 0" is used to suppress a previous | |
1300 | signal, but if the current thread is no longer the one that got | |
1301 | the signal, then the user is potentially suppressing the signal | |
1302 | of the wrong thread. */ | |
1303 | if (!non_stop) | |
1304 | { | |
70509625 PA |
1305 | int must_confirm = 0; |
1306 | ||
1307 | /* This indicates what will be resumed. Either a single thread, | |
1308 | a whole process, or all threads of all processes. */ | |
08036331 | 1309 | ptid_t resume_ptid = user_visible_resume_ptid (0); |
70509625 | 1310 | |
08036331 | 1311 | for (thread_info *tp : all_non_exited_threads (resume_ptid)) |
70509625 | 1312 | { |
d7e15655 | 1313 | if (tp->ptid == inferior_ptid) |
70509625 | 1314 | continue; |
70509625 PA |
1315 | |
1316 | if (tp->suspend.stop_signal != GDB_SIGNAL_0 | |
1317 | && signal_pass_state (tp->suspend.stop_signal)) | |
1318 | { | |
1319 | if (!must_confirm) | |
1320 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1321 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1322 | print_thread_id (tp), | |
70509625 PA |
1323 | gdb_signal_to_name (tp->suspend.stop_signal), |
1324 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
1325 | must_confirm = 1; | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | if (must_confirm | |
43792cf0 | 1330 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1331 | "still deliver the signals noted above to their respective threads.\n" |
1332 | "Continue anyway? "), | |
43792cf0 | 1333 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1334 | error (_("Not confirmed.")); |
1335 | } | |
1336 | ||
c906108c SS |
1337 | if (from_tty) |
1338 | { | |
a493e3e2 | 1339 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1340 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1341 | else |
a3f17187 | 1342 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1343 | gdb_signal_to_name (oursig)); |
c906108c SS |
1344 | } |
1345 | ||
70509625 | 1346 | clear_proceed_status (0); |
64ce06e4 | 1347 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1348 | } |
1349 | ||
81219e53 DE |
1350 | /* Queue a signal to be delivered to the current thread. */ |
1351 | ||
1352 | static void | |
0b39b52e | 1353 | queue_signal_command (const char *signum_exp, int from_tty) |
81219e53 DE |
1354 | { |
1355 | enum gdb_signal oursig; | |
1356 | struct thread_info *tp; | |
1357 | ||
1358 | ERROR_NO_INFERIOR; | |
1359 | ensure_not_tfind_mode (); | |
1360 | ensure_valid_thread (); | |
1361 | ensure_not_running (); | |
1362 | ||
1363 | if (signum_exp == NULL) | |
1364 | error_no_arg (_("signal number")); | |
1365 | ||
1366 | /* It would be even slicker to make signal names be valid expressions, | |
1367 | (the type could be "enum $signal" or some such), then the user could | |
1368 | assign them to convenience variables. */ | |
1369 | oursig = gdb_signal_from_name (signum_exp); | |
1370 | ||
1371 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1372 | { | |
1373 | /* No, try numeric. */ | |
1374 | int num = parse_and_eval_long (signum_exp); | |
1375 | ||
1376 | if (num == 0) | |
1377 | oursig = GDB_SIGNAL_0; | |
1378 | else | |
1379 | oursig = gdb_signal_from_command (num); | |
1380 | } | |
1381 | ||
1382 | if (oursig != GDB_SIGNAL_0 | |
1383 | && !signal_pass_state (oursig)) | |
1384 | error (_("Signal handling set to not pass this signal to the program.")); | |
1385 | ||
1386 | tp = inferior_thread (); | |
1387 | tp->suspend.stop_signal = oursig; | |
1388 | } | |
1389 | ||
cfc31633 PA |
1390 | /* Data for the FSM that manages the until (with no argument) |
1391 | command. */ | |
1392 | ||
46e3ed7f | 1393 | struct until_next_fsm : public thread_fsm |
fa4cd53f | 1394 | { |
cfc31633 | 1395 | /* The thread that as current when the command was executed. */ |
fa4cd53f | 1396 | int thread; |
cfc31633 | 1397 | |
46e3ed7f TT |
1398 | until_next_fsm (struct interp *cmd_interp, int thread) |
1399 | : thread_fsm (cmd_interp), | |
1400 | thread (thread) | |
1401 | { | |
1402 | } | |
cfc31633 | 1403 | |
46e3ed7f TT |
1404 | bool should_stop (struct thread_info *thread) override; |
1405 | void clean_up (struct thread_info *thread) override; | |
1406 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
1407 | }; |
1408 | ||
cfc31633 PA |
1409 | /* Implementation of the 'should_stop' FSM method for the until (with |
1410 | no arg) command. */ | |
1411 | ||
46e3ed7f TT |
1412 | bool |
1413 | until_next_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 1414 | { |
cfc31633 | 1415 | if (tp->control.stop_step) |
46e3ed7f | 1416 | set_finished (); |
cfc31633 | 1417 | |
46e3ed7f | 1418 | return true; |
cfc31633 PA |
1419 | } |
1420 | ||
1421 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1422 | arg) command. */ | |
186c406b | 1423 | |
46e3ed7f TT |
1424 | void |
1425 | until_next_fsm::clean_up (struct thread_info *thread) | |
186c406b | 1426 | { |
8980e177 | 1427 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1428 | } |
1429 | ||
1430 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1431 | (with no arg) command. */ | |
1432 | ||
46e3ed7f TT |
1433 | enum async_reply_reason |
1434 | until_next_fsm::do_async_reply_reason () | |
cfc31633 PA |
1435 | { |
1436 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1437 | } |
1438 | ||
c906108c SS |
1439 | /* Proceed until we reach a different source line with pc greater than |
1440 | our current one or exit the function. We skip calls in both cases. | |
1441 | ||
1442 | Note that eventually this command should probably be changed so | |
1443 | that only source lines are printed out when we hit the breakpoint | |
1444 | we set. This may involve changes to wait_for_inferior and the | |
1445 | proceed status code. */ | |
1446 | ||
c906108c | 1447 | static void |
fba45db2 | 1448 | until_next_command (int from_tty) |
c906108c SS |
1449 | { |
1450 | struct frame_info *frame; | |
1451 | CORE_ADDR pc; | |
1452 | struct symbol *func; | |
1453 | struct symtab_and_line sal; | |
4e1c45ea | 1454 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1455 | int thread = tp->global_num; |
cfc31633 | 1456 | struct until_next_fsm *sm; |
c5aa993b | 1457 | |
70509625 | 1458 | clear_proceed_status (0); |
edb3359d | 1459 | set_step_frame (); |
c906108c SS |
1460 | |
1461 | frame = get_current_frame (); | |
1462 | ||
1463 | /* Step until either exited from this function or greater | |
1464 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1465 | not). */ |
c906108c | 1466 | |
1c7819ef | 1467 | pc = get_frame_pc (frame); |
c906108c | 1468 | func = find_pc_function (pc); |
c5aa993b | 1469 | |
c906108c SS |
1470 | if (!func) |
1471 | { | |
7cbd4a93 | 1472 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1473 | |
7cbd4a93 | 1474 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1475 | error (_("Execution is not within a known function.")); |
c5aa993b | 1476 | |
77e371c0 | 1477 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1478 | /* The upper-bound of step_range is exclusive. In order to make PC |
1479 | within the range, set the step_range_end with PC + 1. */ | |
1480 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1481 | } |
1482 | else | |
1483 | { | |
1484 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1485 | |
2b1ffcfd | 1486 | tp->control.step_range_start = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (func)); |
16c381f0 | 1487 | tp->control.step_range_end = sal.end; |
c906108c | 1488 | } |
c1e36e3e | 1489 | tp->control.may_range_step = 1; |
c5aa993b | 1490 | |
16c381f0 | 1491 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1492 | |
186c406b | 1493 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
5419bdae | 1494 | delete_longjmp_breakpoint_cleanup lj_deleter (thread); |
186c406b | 1495 | |
46e3ed7f TT |
1496 | sm = new until_next_fsm (command_interp (), tp->global_num); |
1497 | tp->thread_fsm = sm; | |
5419bdae | 1498 | lj_deleter.release (); |
fa4cd53f | 1499 | |
cfc31633 | 1500 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1501 | } |
1502 | ||
c5aa993b | 1503 | static void |
0b39b52e | 1504 | until_command (const char *arg, int from_tty) |
c906108c | 1505 | { |
6c4486e6 | 1506 | int async_exec; |
43ff13b4 | 1507 | |
4247603b | 1508 | ERROR_NO_INFERIOR; |
573cda03 | 1509 | ensure_not_tfind_mode (); |
4247603b PA |
1510 | ensure_valid_thread (); |
1511 | ensure_not_running (); | |
573cda03 | 1512 | |
1777feb0 | 1513 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1514 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1515 | arg = stripped.get (); | |
43ff13b4 | 1516 | |
8b88a78e | 1517 | prepare_execution_command (current_top_target (), async_exec); |
43ff13b4 | 1518 | |
c906108c | 1519 | if (arg) |
ae66c1fc | 1520 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1521 | else |
1522 | until_next_command (from_tty); | |
1523 | } | |
ae66c1fc EZ |
1524 | |
1525 | static void | |
0b39b52e | 1526 | advance_command (const char *arg, int from_tty) |
ae66c1fc | 1527 | { |
6c4486e6 | 1528 | int async_exec; |
ae66c1fc | 1529 | |
4247603b | 1530 | ERROR_NO_INFERIOR; |
573cda03 | 1531 | ensure_not_tfind_mode (); |
4247603b PA |
1532 | ensure_valid_thread (); |
1533 | ensure_not_running (); | |
573cda03 | 1534 | |
ae66c1fc | 1535 | if (arg == NULL) |
e2e0b3e5 | 1536 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1537 | |
1538 | /* Find out whether we must run in the background. */ | |
6be9a197 TT |
1539 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1540 | arg = stripped.get (); | |
ae66c1fc | 1541 | |
8b88a78e | 1542 | prepare_execution_command (current_top_target (), async_exec); |
ae66c1fc EZ |
1543 | |
1544 | until_break_command (arg, from_tty, 1); | |
1545 | } | |
c906108c | 1546 | \f |
cc72b2a2 | 1547 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1548 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1549 | right after an inferior call has finished. */ | |
f941662f | 1550 | |
cc72b2a2 | 1551 | struct value * |
0700e23e | 1552 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1553 | { |
215c69dc YQ |
1554 | regcache *stop_regs = get_current_regcache (); |
1555 | struct gdbarch *gdbarch = stop_regs->arch (); | |
44e5158b AC |
1556 | struct value *value; |
1557 | ||
f168693b | 1558 | value_type = check_typedef (value_type); |
44e5158b | 1559 | gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID); |
11cf8741 | 1560 | |
92ad9cd9 AC |
1561 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1562 | call, it's possible (with no help from the architecture vector) | |
1563 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1564 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1565 | inferior function call code. In fact, when inferior function |
1566 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1567 | |
6a3a010b | 1568 | switch (gdbarch_return_value (gdbarch, function, value_type, |
c055b101 | 1569 | NULL, NULL, NULL)) |
44e5158b | 1570 | { |
750eb019 AC |
1571 | case RETURN_VALUE_REGISTER_CONVENTION: |
1572 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1573 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1574 | value = allocate_value (value_type); |
215c69dc | 1575 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
990a07ab | 1576 | value_contents_raw (value), NULL); |
750eb019 AC |
1577 | break; |
1578 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1579 | value = NULL; | |
1580 | break; | |
1581 | default: | |
e2e0b3e5 | 1582 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1583 | } |
bb472c1e | 1584 | |
cc72b2a2 KP |
1585 | return value; |
1586 | } | |
1587 | ||
243a9253 PA |
1588 | /* The captured function return value/type and its position in the |
1589 | value history. */ | |
cc72b2a2 | 1590 | |
243a9253 | 1591 | struct return_value_info |
cc72b2a2 | 1592 | { |
243a9253 PA |
1593 | /* The captured return value. May be NULL if we weren't able to |
1594 | retrieve it. See get_return_value. */ | |
1595 | struct value *value; | |
1596 | ||
1597 | /* The return type. In some cases, we'll not be able extract the | |
1598 | return value, but we always know the type. */ | |
1599 | struct type *type; | |
1600 | ||
1601 | /* If we captured a value, this is the value history index. */ | |
1602 | int value_history_index; | |
1603 | }; | |
1604 | ||
1605 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1606 | |
243a9253 PA |
1607 | static void |
1608 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1609 | { | |
1610 | if (rv->value != NULL) | |
31db7b6c | 1611 | { |
79a45b7d TT |
1612 | struct value_print_options opts; |
1613 | ||
31db7b6c | 1614 | /* Print it. */ |
112e8700 SM |
1615 | uiout->text ("Value returned is "); |
1616 | uiout->field_fmt ("gdb-result-var", "$%d", | |
d7e74731 | 1617 | rv->value_history_index); |
112e8700 | 1618 | uiout->text (" = "); |
5d9a0608 | 1619 | get_user_print_options (&opts); |
d7e74731 PA |
1620 | |
1621 | string_file stb; | |
1622 | ||
1623 | value_print (rv->value, &stb, &opts); | |
112e8700 SM |
1624 | uiout->field_stream ("return-value", stb); |
1625 | uiout->text ("\n"); | |
31db7b6c MK |
1626 | } |
1627 | else | |
1628 | { | |
2f408ecb | 1629 | std::string type_name = type_to_string (rv->type); |
112e8700 SM |
1630 | uiout->text ("Value returned has type: "); |
1631 | uiout->field_string ("return-type", type_name.c_str ()); | |
1632 | uiout->text ("."); | |
1633 | uiout->text (" Cannot determine contents\n"); | |
31db7b6c | 1634 | } |
11cf8741 JM |
1635 | } |
1636 | ||
243a9253 PA |
1637 | /* Print the result of a function at the end of a 'finish' command. |
1638 | RV points at an object representing the captured return value/type | |
1639 | and its position in the value history. */ | |
1640 | ||
1641 | void | |
1642 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1643 | { | |
f097f5ad TT |
1644 | if (rv->type == NULL |
1645 | || TYPE_CODE (check_typedef (rv->type)) == TYPE_CODE_VOID) | |
243a9253 PA |
1646 | return; |
1647 | ||
a70b8144 | 1648 | try |
243a9253 PA |
1649 | { |
1650 | /* print_return_value_1 can throw an exception in some | |
1651 | circumstances. We need to catch this so that we still | |
1652 | delete the breakpoint. */ | |
1653 | print_return_value_1 (uiout, rv); | |
1654 | } | |
230d2906 | 1655 | catch (const gdb_exception &ex) |
243a9253 PA |
1656 | { |
1657 | exception_print (gdb_stdout, ex); | |
1658 | } | |
243a9253 PA |
1659 | } |
1660 | ||
1661 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1662 | |
46e3ed7f | 1663 | struct finish_command_fsm : public thread_fsm |
43ff13b4 | 1664 | { |
243a9253 PA |
1665 | /* The momentary breakpoint set at the function's return address in |
1666 | the caller. */ | |
46e3ed7f | 1667 | breakpoint_up breakpoint; |
243a9253 PA |
1668 | |
1669 | /* The function that we're stepping out of. */ | |
46e3ed7f | 1670 | struct symbol *function = nullptr; |
8a6c4031 | 1671 | |
243a9253 PA |
1672 | /* If the FSM finishes successfully, this stores the function's |
1673 | return value. */ | |
46e3ed7f | 1674 | struct return_value_info return_value_info {}; |
c5aa993b | 1675 | |
46e3ed7f TT |
1676 | explicit finish_command_fsm (struct interp *cmd_interp) |
1677 | : thread_fsm (cmd_interp) | |
1678 | { | |
1679 | } | |
243a9253 | 1680 | |
46e3ed7f TT |
1681 | bool should_stop (struct thread_info *thread) override; |
1682 | void clean_up (struct thread_info *thread) override; | |
1683 | struct return_value_info *return_value () override; | |
1684 | enum async_reply_reason do_async_reply_reason () override; | |
1685 | }; | |
347bddb7 | 1686 | |
243a9253 PA |
1687 | /* Implementation of the 'should_stop' FSM method for the finish |
1688 | commands. Detects whether the thread stepped out of the function | |
1689 | successfully, and if so, captures the function's return value and | |
1690 | marks the FSM finished. */ | |
1691 | ||
46e3ed7f TT |
1692 | bool |
1693 | finish_command_fsm::should_stop (struct thread_info *tp) | |
243a9253 | 1694 | { |
46e3ed7f | 1695 | struct return_value_info *rv = &return_value_info; |
243a9253 | 1696 | |
46e3ed7f | 1697 | if (function != NULL |
243a9253 | 1698 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f | 1699 | breakpoint.get ()) != NULL) |
43ff13b4 | 1700 | { |
243a9253 | 1701 | /* We're done. */ |
46e3ed7f | 1702 | set_finished (); |
bfec99b2 | 1703 | |
46e3ed7f | 1704 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); |
243a9253 PA |
1705 | if (rv->type == NULL) |
1706 | internal_error (__FILE__, __LINE__, | |
1707 | _("finish_command: function has no target type")); | |
f5871ec0 | 1708 | |
f097f5ad | 1709 | if (TYPE_CODE (check_typedef (rv->type)) != TYPE_CODE_VOID) |
40c549d6 | 1710 | { |
243a9253 PA |
1711 | struct value *func; |
1712 | ||
46e3ed7f | 1713 | func = read_var_value (function, NULL, get_current_frame ()); |
0700e23e | 1714 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1715 | if (rv->value != NULL) |
1716 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1717 | } |
1718 | } | |
1719 | else if (tp->control.stop_step) | |
1720 | { | |
1721 | /* Finishing from an inline frame, or reverse finishing. In | |
1722 | either case, there's no way to retrieve the return value. */ | |
46e3ed7f | 1723 | set_finished (); |
243a9253 | 1724 | } |
fa4cd53f | 1725 | |
46e3ed7f | 1726 | return true; |
243a9253 | 1727 | } |
40c549d6 | 1728 | |
243a9253 PA |
1729 | /* Implementation of the 'clean_up' FSM method for the finish |
1730 | commands. */ | |
fa4cd53f | 1731 | |
46e3ed7f TT |
1732 | void |
1733 | finish_command_fsm::clean_up (struct thread_info *thread) | |
243a9253 | 1734 | { |
46e3ed7f | 1735 | breakpoint.reset (); |
8980e177 | 1736 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1737 | } |
f941662f | 1738 | |
243a9253 PA |
1739 | /* Implementation of the 'return_value' FSM method for the finish |
1740 | commands. */ | |
1741 | ||
46e3ed7f TT |
1742 | struct return_value_info * |
1743 | finish_command_fsm::return_value () | |
243a9253 | 1744 | { |
46e3ed7f | 1745 | return &return_value_info; |
43ff13b4 JM |
1746 | } |
1747 | ||
243a9253 PA |
1748 | /* Implementation of the 'async_reply_reason' FSM method for the |
1749 | finish commands. */ | |
1750 | ||
46e3ed7f TT |
1751 | enum async_reply_reason |
1752 | finish_command_fsm::do_async_reply_reason () | |
604ead4a | 1753 | { |
243a9253 PA |
1754 | if (execution_direction == EXEC_REVERSE) |
1755 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1756 | else | |
1757 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1758 | } |
1759 | ||
b2175913 MS |
1760 | /* finish_backward -- helper function for finish_command. */ |
1761 | ||
1762 | static void | |
243a9253 | 1763 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1764 | { |
1765 | struct symtab_and_line sal; | |
1766 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1767 | CORE_ADDR pc; |
b2175913 | 1768 | CORE_ADDR func_addr; |
b2175913 | 1769 | |
1c7819ef PA |
1770 | pc = get_frame_pc (get_current_frame ()); |
1771 | ||
1772 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1773 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1774 | |
1775 | sal = find_pc_line (func_addr, 0); | |
1776 | ||
9da8c2a0 | 1777 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1778 | /* Special case: if we're sitting at the function entry point, |
1779 | then all we need to do is take a reverse singlestep. We | |
1780 | don't need to set a breakpoint, and indeed it would do us | |
1781 | no good to do so. | |
1782 | ||
1783 | Note that this can only happen at frame #0, since there's | |
1784 | no way that a function up the stack can have a return address | |
1785 | that's equal to its entry point. */ | |
1786 | ||
1c7819ef | 1787 | if (sal.pc != pc) |
b2175913 | 1788 | { |
a6d9a66e UW |
1789 | struct frame_info *frame = get_selected_frame (NULL); |
1790 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1791 | |
1792 | /* Set a step-resume at the function's entry point. Once that's | |
1793 | hit, we'll do one more step backwards. */ | |
51abb421 | 1794 | symtab_and_line sr_sal; |
9da8c2a0 PA |
1795 | sr_sal.pc = sal.pc; |
1796 | sr_sal.pspace = get_frame_program_space (frame); | |
1797 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1798 | sr_sal, null_frame_id); | |
a6d9a66e | 1799 | |
64ce06e4 | 1800 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1801 | } |
1802 | else | |
b2175913 | 1803 | { |
9da8c2a0 PA |
1804 | /* We're almost there -- we just need to back up by one more |
1805 | single-step. */ | |
16c381f0 | 1806 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1807 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1808 | } |
b2175913 MS |
1809 | } |
1810 | ||
243a9253 PA |
1811 | /* finish_forward -- helper function for finish_command. FRAME is the |
1812 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1813 | |
1814 | static void | |
243a9253 | 1815 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1816 | { |
def166f6 | 1817 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1818 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1819 | struct symtab_and_line sal; |
1820 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1821 | |
1822 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1823 | sal.pc = get_frame_pc (frame); | |
1824 | ||
243a9253 PA |
1825 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1826 | get_stack_frame_id (frame), | |
46e3ed7f | 1827 | bp_finish); |
b2175913 | 1828 | |
c70a6932 JK |
1829 | /* set_momentary_breakpoint invalidates FRAME. */ |
1830 | frame = NULL; | |
1831 | ||
def166f6 | 1832 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1833 | |
46c03469 | 1834 | /* We want to print return value, please... */ |
16c381f0 | 1835 | tp->control.proceed_to_finish = 1; |
b2175913 | 1836 | |
243a9253 | 1837 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1838 | } |
1839 | ||
e3b5daf9 MM |
1840 | /* Skip frames for "finish". */ |
1841 | ||
1842 | static struct frame_info * | |
1843 | skip_finish_frames (struct frame_info *frame) | |
1844 | { | |
1845 | struct frame_info *start; | |
1846 | ||
1847 | do | |
1848 | { | |
1849 | start = frame; | |
1850 | ||
1851 | frame = skip_tailcall_frames (frame); | |
1852 | if (frame == NULL) | |
1853 | break; | |
1854 | ||
1855 | frame = skip_unwritable_frames (frame); | |
1856 | if (frame == NULL) | |
1857 | break; | |
1858 | } | |
1859 | while (start != frame); | |
1860 | ||
1861 | return frame; | |
1862 | } | |
1863 | ||
f941662f MK |
1864 | /* "finish": Set a temporary breakpoint at the place the selected |
1865 | frame will return to, then continue. */ | |
c906108c SS |
1866 | |
1867 | static void | |
0b39b52e | 1868 | finish_command (const char *arg, int from_tty) |
c906108c | 1869 | { |
52f0bd74 | 1870 | struct frame_info *frame; |
6c4486e6 | 1871 | int async_exec; |
243a9253 PA |
1872 | struct finish_command_fsm *sm; |
1873 | struct thread_info *tp; | |
43ff13b4 | 1874 | |
4247603b | 1875 | ERROR_NO_INFERIOR; |
573cda03 | 1876 | ensure_not_tfind_mode (); |
4247603b PA |
1877 | ensure_valid_thread (); |
1878 | ensure_not_running (); | |
573cda03 | 1879 | |
f941662f | 1880 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1881 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1882 | arg = stripped.get (); | |
43ff13b4 | 1883 | |
8b88a78e | 1884 | prepare_execution_command (current_top_target (), async_exec); |
c906108c SS |
1885 | |
1886 | if (arg) | |
8a3fe4f8 | 1887 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1888 | |
206415a3 | 1889 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1890 | if (frame == 0) |
8a3fe4f8 | 1891 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1892 | |
70509625 | 1893 | clear_proceed_status (0); |
c906108c | 1894 | |
243a9253 PA |
1895 | tp = inferior_thread (); |
1896 | ||
46e3ed7f | 1897 | sm = new finish_command_fsm (command_interp ()); |
243a9253 | 1898 | |
46e3ed7f | 1899 | tp->thread_fsm = sm; |
243a9253 | 1900 | |
edb3359d | 1901 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 1902 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
1903 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
1904 | == INLINE_FRAME) | |
1905 | { | |
1906 | /* Claim we are stepping in the calling frame. An empty step | |
1907 | range means that we will stop once we aren't in a function | |
1908 | called by that frame. We don't use the magic "1" value for | |
1909 | step_range_end, because then infrun will think this is nexti, | |
1910 | and not step over the rest of this inlined function call. */ | |
51abb421 | 1911 | set_step_info (frame, {}); |
16c381f0 JK |
1912 | tp->control.step_range_start = get_frame_pc (frame); |
1913 | tp->control.step_range_end = tp->control.step_range_start; | |
1914 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
1915 | |
1916 | /* Print info on the selected frame, including level number but not | |
1917 | source. */ | |
1918 | if (from_tty) | |
1919 | { | |
1920 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 1921 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
1922 | } |
1923 | ||
64ce06e4 | 1924 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
1925 | return; |
1926 | } | |
1927 | ||
c906108c SS |
1928 | /* Find the function we will return from. */ |
1929 | ||
243a9253 | 1930 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 1931 | |
f941662f MK |
1932 | /* Print info on the selected frame, including level number but not |
1933 | source. */ | |
c906108c SS |
1934 | if (from_tty) |
1935 | { | |
b2175913 MS |
1936 | if (execution_direction == EXEC_REVERSE) |
1937 | printf_filtered (_("Run back to call of ")); | |
1938 | else | |
743649fd | 1939 | { |
243a9253 | 1940 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
1941 | && !query (_("warning: Function %s does not return normally.\n" |
1942 | "Try to finish anyway? "), | |
243a9253 | 1943 | SYMBOL_PRINT_NAME (sm->function))) |
743649fd MW |
1944 | error (_("Not confirmed.")); |
1945 | printf_filtered (_("Run till exit from ")); | |
1946 | } | |
b2175913 | 1947 | |
08d72866 | 1948 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
1949 | } |
1950 | ||
b2175913 | 1951 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 1952 | finish_backward (sm); |
b2175913 | 1953 | else |
33b4777c | 1954 | { |
e3b5daf9 | 1955 | frame = skip_finish_frames (frame); |
7eb89530 | 1956 | |
33b4777c MM |
1957 | if (frame == NULL) |
1958 | error (_("Cannot find the caller frame.")); | |
1959 | ||
1960 | finish_forward (sm, frame); | |
1961 | } | |
c906108c SS |
1962 | } |
1963 | \f | |
f941662f | 1964 | |
c906108c | 1965 | static void |
1d12d88f | 1966 | info_program_command (const char *args, int from_tty) |
c906108c | 1967 | { |
347bddb7 PA |
1968 | bpstat bs; |
1969 | int num, stat; | |
347bddb7 | 1970 | ptid_t ptid; |
c5aa993b | 1971 | |
c906108c SS |
1972 | if (!target_has_execution) |
1973 | { | |
a3f17187 | 1974 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
1975 | return; |
1976 | } | |
1977 | ||
347bddb7 PA |
1978 | if (non_stop) |
1979 | ptid = inferior_ptid; | |
1980 | else | |
1981 | { | |
1982 | struct target_waitstatus ws; | |
abbb1732 | 1983 | |
347bddb7 PA |
1984 | get_last_target_status (&ptid, &ws); |
1985 | } | |
1986 | ||
9e7f3bbb | 1987 | if (ptid == null_ptid || ptid == minus_one_ptid) |
00431a78 PA |
1988 | error (_("No selected thread.")); |
1989 | ||
1990 | thread_info *tp = find_thread_ptid (ptid); | |
1991 | ||
1992 | if (tp->state == THREAD_EXITED) | |
347bddb7 | 1993 | error (_("Invalid selected thread.")); |
00431a78 | 1994 | else if (tp->state == THREAD_RUNNING) |
347bddb7 PA |
1995 | error (_("Selected thread is running.")); |
1996 | ||
16c381f0 | 1997 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
1998 | stat = bpstat_num (&bs, &num); |
1999 | ||
c906108c | 2000 | target_files_info (); |
5af949e3 | 2001 | printf_filtered (_("Program stopped at %s.\n"), |
f2ffa92b | 2002 | paddress (target_gdbarch (), tp->suspend.stop_pc)); |
16c381f0 | 2003 | if (tp->control.stop_step) |
a3f17187 | 2004 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 2005 | else if (stat != 0) |
c906108c SS |
2006 | { |
2007 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 2008 | isn't as strange as it seems. */ |
8671a17b | 2009 | while (stat != 0) |
c906108c | 2010 | { |
8671a17b | 2011 | if (stat < 0) |
c906108c | 2012 | { |
3e43a32a MS |
2013 | printf_filtered (_("It stopped at a breakpoint " |
2014 | "that has since been deleted.\n")); | |
c906108c SS |
2015 | } |
2016 | else | |
a3f17187 | 2017 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 2018 | stat = bpstat_num (&bs, &num); |
c906108c SS |
2019 | } |
2020 | } | |
a493e3e2 | 2021 | else if (tp->suspend.stop_signal != GDB_SIGNAL_0) |
c906108c | 2022 | { |
a3f17187 | 2023 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
2ea28649 PA |
2024 | gdb_signal_to_name (tp->suspend.stop_signal), |
2025 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
c906108c SS |
2026 | } |
2027 | ||
0d41ba00 | 2028 | if (from_tty) |
c906108c | 2029 | { |
3e43a32a MS |
2030 | printf_filtered (_("Type \"info stack\" or \"info " |
2031 | "registers\" for more information.\n")); | |
c906108c SS |
2032 | } |
2033 | } | |
2034 | \f | |
2035 | static void | |
69f476a3 | 2036 | environment_info (const char *var, int from_tty) |
c906108c SS |
2037 | { |
2038 | if (var) | |
2039 | { | |
9a6c7d9c | 2040 | const char *val = current_inferior ()->environment.get (var); |
abbb1732 | 2041 | |
c906108c SS |
2042 | if (val) |
2043 | { | |
2044 | puts_filtered (var); | |
2045 | puts_filtered (" = "); | |
2046 | puts_filtered (val); | |
2047 | puts_filtered ("\n"); | |
2048 | } | |
2049 | else | |
2050 | { | |
2051 | puts_filtered ("Environment variable \""); | |
2052 | puts_filtered (var); | |
2053 | puts_filtered ("\" not defined.\n"); | |
2054 | } | |
2055 | } | |
2056 | else | |
2057 | { | |
9a6c7d9c | 2058 | char **envp = current_inferior ()->environment.envp (); |
abbb1732 | 2059 | |
9a6c7d9c | 2060 | for (int idx = 0; envp[idx] != NULL; ++idx) |
c906108c | 2061 | { |
9a6c7d9c | 2062 | puts_filtered (envp[idx]); |
c906108c SS |
2063 | puts_filtered ("\n"); |
2064 | } | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | static void | |
69f476a3 | 2069 | set_environment_command (const char *arg, int from_tty) |
c906108c | 2070 | { |
69f476a3 | 2071 | const char *p, *val; |
c906108c SS |
2072 | int nullset = 0; |
2073 | ||
2074 | if (arg == 0) | |
e2e0b3e5 | 2075 | error_no_arg (_("environment variable and value")); |
c906108c | 2076 | |
1777feb0 | 2077 | /* Find seperation between variable name and value. */ |
c906108c SS |
2078 | p = (char *) strchr (arg, '='); |
2079 | val = (char *) strchr (arg, ' '); | |
2080 | ||
2081 | if (p != 0 && val != 0) | |
2082 | { | |
2083 | /* We have both a space and an equals. If the space is before the | |
c5aa993b | 2084 | equals, walk forward over the spaces til we see a nonspace |
1777feb0 | 2085 | (possibly the equals). */ |
c906108c SS |
2086 | if (p > val) |
2087 | while (*val == ' ') | |
2088 | val++; | |
2089 | ||
2090 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 2091 | take the char following the spaces. */ |
c906108c SS |
2092 | if (p > val) |
2093 | p = val - 1; | |
2094 | } | |
2095 | else if (val != 0 && p == 0) | |
2096 | p = val; | |
2097 | ||
2098 | if (p == arg) | |
e2e0b3e5 | 2099 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2100 | |
2101 | if (p == 0 || p[1] == 0) | |
2102 | { | |
2103 | nullset = 1; | |
2104 | if (p == 0) | |
1777feb0 | 2105 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2106 | } |
2107 | else | |
2108 | { | |
1777feb0 | 2109 | /* Not setting variable value to null. */ |
c906108c SS |
2110 | val = p + 1; |
2111 | while (*val == ' ' || *val == '\t') | |
2112 | val++; | |
2113 | } | |
2114 | ||
c5aa993b JM |
2115 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2116 | p--; | |
c906108c | 2117 | |
69f476a3 | 2118 | std::string var (arg, p - arg); |
c906108c SS |
2119 | if (nullset) |
2120 | { | |
3e43a32a MS |
2121 | printf_filtered (_("Setting environment variable " |
2122 | "\"%s\" to null value.\n"), | |
69f476a3 TT |
2123 | var.c_str ()); |
2124 | current_inferior ()->environment.set (var.c_str (), ""); | |
c906108c SS |
2125 | } |
2126 | else | |
69f476a3 | 2127 | current_inferior ()->environment.set (var.c_str (), val); |
c906108c SS |
2128 | } |
2129 | ||
2130 | static void | |
69f476a3 | 2131 | unset_environment_command (const char *var, int from_tty) |
c906108c SS |
2132 | { |
2133 | if (var == 0) | |
2134 | { | |
2135 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 2136 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2137 | if (!from_tty || query (_("Delete all environment variables? "))) |
206726fb | 2138 | current_inferior ()->environment.clear (); |
c906108c SS |
2139 | } |
2140 | else | |
9a6c7d9c | 2141 | current_inferior ()->environment.unset (var); |
c906108c SS |
2142 | } |
2143 | ||
1777feb0 | 2144 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2145 | |
2146 | static const char path_var_name[] = "PATH"; | |
2147 | ||
c906108c | 2148 | static void |
69f476a3 | 2149 | path_info (const char *args, int from_tty) |
c906108c SS |
2150 | { |
2151 | puts_filtered ("Executable and object file path: "); | |
9a6c7d9c | 2152 | puts_filtered (current_inferior ()->environment.get (path_var_name)); |
c906108c SS |
2153 | puts_filtered ("\n"); |
2154 | } | |
2155 | ||
2156 | /* Add zero or more directories to the front of the execution path. */ | |
2157 | ||
2158 | static void | |
0b39b52e | 2159 | path_command (const char *dirname, int from_tty) |
c906108c SS |
2160 | { |
2161 | char *exec_path; | |
a121b7c1 | 2162 | const char *env; |
abbb1732 | 2163 | |
c906108c | 2164 | dont_repeat (); |
9a6c7d9c | 2165 | env = current_inferior ()->environment.get (path_var_name); |
1777feb0 | 2166 | /* Can be null if path is not set. */ |
c906108c SS |
2167 | if (!env) |
2168 | env = ""; | |
4fcf66da | 2169 | exec_path = xstrdup (env); |
c906108c | 2170 | mod_path (dirname, &exec_path); |
9a6c7d9c | 2171 | current_inferior ()->environment.set (path_var_name, exec_path); |
b8c9b27d | 2172 | xfree (exec_path); |
c906108c | 2173 | if (from_tty) |
c5aa993b | 2174 | path_info ((char *) NULL, from_tty); |
c906108c | 2175 | } |
c906108c | 2176 | \f |
c5aa993b | 2177 | |
e813d34a RK |
2178 | static void |
2179 | pad_to_column (string_file &stream, int col) | |
2180 | { | |
2181 | /* At least one space must be printed to separate columns. */ | |
2182 | stream.putc (' '); | |
2183 | const int size = stream.size (); | |
2184 | if (size < col) | |
2185 | stream.puts (n_spaces (col - size)); | |
2186 | } | |
2187 | ||
1292279a PA |
2188 | /* Print out the register NAME with value VAL, to FILE, in the default |
2189 | fashion. */ | |
2190 | ||
2191 | static void | |
2192 | default_print_one_register_info (struct ui_file *file, | |
2193 | const char *name, | |
2194 | struct value *val) | |
2195 | { | |
2196 | struct type *regtype = value_type (val); | |
f69d9aef | 2197 | int print_raw_format; |
e813d34a RK |
2198 | string_file format_stream; |
2199 | enum tab_stops | |
2200 | { | |
2201 | value_column_1 = 15, | |
2202 | /* Give enough room for "0x", 16 hex digits and two spaces in | |
2203 | preceding column. */ | |
2204 | value_column_2 = value_column_1 + 2 + 16 + 2, | |
2205 | }; | |
1292279a | 2206 | |
e813d34a RK |
2207 | format_stream.puts (name); |
2208 | pad_to_column (format_stream, value_column_1); | |
1292279a | 2209 | |
f69d9aef AB |
2210 | print_raw_format = (value_entirely_available (val) |
2211 | && !value_optimized_out (val)); | |
1292279a PA |
2212 | |
2213 | /* If virtual format is floating, print it that way, and in raw | |
2214 | hex. */ | |
2215 | if (TYPE_CODE (regtype) == TYPE_CODE_FLT | |
2216 | || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT) | |
2217 | { | |
1292279a PA |
2218 | struct value_print_options opts; |
2219 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
2220 | enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (regtype)); | |
2221 | ||
2222 | get_user_print_options (&opts); | |
2223 | opts.deref_ref = 1; | |
2224 | ||
2225 | val_print (regtype, | |
1292279a | 2226 | value_embedded_offset (val), 0, |
e813d34a | 2227 | &format_stream, 0, val, &opts, current_language); |
1292279a | 2228 | |
f69d9aef AB |
2229 | if (print_raw_format) |
2230 | { | |
e813d34a RK |
2231 | pad_to_column (format_stream, value_column_2); |
2232 | format_stream.puts ("(raw "); | |
2233 | print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype), | |
2234 | byte_order, true); | |
2235 | format_stream.putc (')'); | |
f69d9aef | 2236 | } |
1292279a PA |
2237 | } |
2238 | else | |
2239 | { | |
2240 | struct value_print_options opts; | |
2241 | ||
2242 | /* Print the register in hex. */ | |
2243 | get_formatted_print_options (&opts, 'x'); | |
2244 | opts.deref_ref = 1; | |
2245 | val_print (regtype, | |
1292279a | 2246 | value_embedded_offset (val), 0, |
e813d34a | 2247 | &format_stream, 0, val, &opts, current_language); |
1292279a PA |
2248 | /* If not a vector register, print it also according to its |
2249 | natural format. */ | |
f69d9aef | 2250 | if (print_raw_format && TYPE_VECTOR (regtype) == 0) |
1292279a | 2251 | { |
e813d34a | 2252 | pad_to_column (format_stream, value_column_2); |
1292279a PA |
2253 | get_user_print_options (&opts); |
2254 | opts.deref_ref = 1; | |
1292279a | 2255 | val_print (regtype, |
1292279a | 2256 | value_embedded_offset (val), 0, |
e813d34a | 2257 | &format_stream, 0, val, &opts, current_language); |
1292279a PA |
2258 | } |
2259 | } | |
2260 | ||
e813d34a | 2261 | fputs_filtered (format_stream.c_str (), file); |
1292279a PA |
2262 | fprintf_filtered (file, "\n"); |
2263 | } | |
2264 | ||
1777feb0 | 2265 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2266 | registers (print_all == 1) or all non-float and non-vector |
2267 | registers (print_all == 0). | |
c906108c SS |
2268 | |
2269 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2270 | register(s) one per line is good enough. If a different format is |
2271 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2272 | regs), or there is an existing convention for showing all the | |
2273 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2274 | provide that format. */ | |
c906108c | 2275 | |
666e11c5 | 2276 | void |
0ab7a791 AC |
2277 | default_print_registers_info (struct gdbarch *gdbarch, |
2278 | struct ui_file *file, | |
2279 | struct frame_info *frame, | |
2280 | int regnum, int print_all) | |
c906108c | 2281 | { |
0ab7a791 | 2282 | int i; |
f6efe3f8 | 2283 | const int numregs = gdbarch_num_cooked_regs (gdbarch); |
0ab7a791 | 2284 | |
c906108c SS |
2285 | for (i = 0; i < numregs; i++) |
2286 | { | |
4782dc19 AC |
2287 | /* Decide between printing all regs, non-float / vector regs, or |
2288 | specific reg. */ | |
c5aa993b JM |
2289 | if (regnum == -1) |
2290 | { | |
f9418c0f | 2291 | if (print_all) |
4782dc19 | 2292 | { |
f9418c0f | 2293 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2294 | continue; |
f9418c0f AC |
2295 | } |
2296 | else | |
2297 | { | |
2298 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2299 | continue; |
2300 | } | |
c5aa993b JM |
2301 | } |
2302 | else | |
2303 | { | |
2304 | if (i != regnum) | |
2305 | continue; | |
2306 | } | |
c906108c SS |
2307 | |
2308 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 2309 | processor, so don't display anything. */ |
a4bd449d UW |
2310 | if (gdbarch_register_name (gdbarch, i) == NULL |
2311 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2312 | continue; |
2313 | ||
1292279a PA |
2314 | default_print_one_register_info (file, |
2315 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2316 | value_of_register (i, frame)); |
c906108c SS |
2317 | } |
2318 | } | |
c906108c | 2319 | |
c906108c | 2320 | void |
1d12d88f | 2321 | registers_info (const char *addr_exp, int fpregs) |
c906108c | 2322 | { |
206415a3 | 2323 | struct frame_info *frame; |
a4bd449d | 2324 | struct gdbarch *gdbarch; |
c906108c SS |
2325 | |
2326 | if (!target_has_registers) | |
8a3fe4f8 | 2327 | error (_("The program has no registers now.")); |
206415a3 | 2328 | frame = get_selected_frame (NULL); |
a4bd449d | 2329 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2330 | |
2331 | if (!addr_exp) | |
2332 | { | |
a4bd449d | 2333 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2334 | frame, -1, fpregs); |
c906108c SS |
2335 | return; |
2336 | } | |
2337 | ||
f9418c0f | 2338 | while (*addr_exp != '\0') |
c5aa993b | 2339 | { |
1d12d88f | 2340 | const char *start; |
f9418c0f | 2341 | const char *end; |
c906108c | 2342 | |
529480d0 KS |
2343 | /* Skip leading white space. */ |
2344 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2345 | |
f9418c0f AC |
2346 | /* Discard any leading ``$''. Check that there is something |
2347 | resembling a register following it. */ | |
2348 | if (addr_exp[0] == '$') | |
2349 | addr_exp++; | |
2350 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2351 | error (_("Missing register name")); |
c906108c | 2352 | |
f9418c0f AC |
2353 | /* Find the start/end of this register name/num/group. */ |
2354 | start = addr_exp; | |
2355 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2356 | addr_exp++; | |
2357 | end = addr_exp; | |
ad842144 | 2358 | |
f9418c0f AC |
2359 | /* Figure out what we've found and display it. */ |
2360 | ||
2361 | /* A register name? */ | |
2362 | { | |
029a67e4 | 2363 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2364 | |
f9418c0f AC |
2365 | if (regnum >= 0) |
2366 | { | |
ad842144 MR |
2367 | /* User registers lie completely outside of the range of |
2368 | normal registers. Catch them early so that the target | |
2369 | never sees them. */ | |
f6efe3f8 | 2370 | if (regnum >= gdbarch_num_cooked_regs (gdbarch)) |
ad842144 | 2371 | { |
1292279a PA |
2372 | struct value *regval = value_of_user_reg (regnum, frame); |
2373 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2374 | regnum); | |
2375 | ||
2376 | /* Print in the same fashion | |
2377 | gdbarch_print_registers_info's default | |
2378 | implementation prints. */ | |
2379 | default_print_one_register_info (gdb_stdout, | |
2380 | regname, | |
2381 | regval); | |
ad842144 MR |
2382 | } |
2383 | else | |
2384 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2385 | frame, regnum, fpregs); | |
f9418c0f AC |
2386 | continue; |
2387 | } | |
2388 | } | |
ad842144 | 2389 | |
f9418c0f AC |
2390 | /* A register group? */ |
2391 | { | |
6c7d17ba | 2392 | struct reggroup *group; |
abbb1732 | 2393 | |
a4bd449d | 2394 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2395 | group != NULL; |
a4bd449d | 2396 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2397 | { |
2398 | /* Don't bother with a length check. Should the user | |
2399 | enter a short register group name, go with the first | |
2400 | group that matches. */ | |
6c7d17ba | 2401 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2402 | break; |
2403 | } | |
6c7d17ba | 2404 | if (group != NULL) |
f9418c0f AC |
2405 | { |
2406 | int regnum; | |
abbb1732 | 2407 | |
f57d151a | 2408 | for (regnum = 0; |
f6efe3f8 | 2409 | regnum < gdbarch_num_cooked_regs (gdbarch); |
f57d151a | 2410 | regnum++) |
f9418c0f | 2411 | { |
a4bd449d UW |
2412 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2413 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2414 | gdb_stdout, frame, |
f9418c0f AC |
2415 | regnum, fpregs); |
2416 | } | |
2417 | continue; | |
2418 | } | |
2419 | } | |
c906108c | 2420 | |
f9418c0f | 2421 | /* Nothing matched. */ |
8a3fe4f8 | 2422 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2423 | } |
c906108c SS |
2424 | } |
2425 | ||
1dd5fedc | 2426 | static void |
1d12d88f | 2427 | info_all_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2428 | { |
2429 | registers_info (addr_exp, 1); | |
2430 | } | |
2431 | ||
a58dd373 | 2432 | static void |
1d12d88f | 2433 | info_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2434 | { |
2435 | registers_info (addr_exp, 0); | |
2436 | } | |
e76f1f2e AC |
2437 | |
2438 | static void | |
d80b854b | 2439 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2440 | struct frame_info *frame, const char *args) |
2441 | { | |
d80b854b UW |
2442 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2443 | ||
e76f1f2e AC |
2444 | if (gdbarch_print_vector_info_p (gdbarch)) |
2445 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2446 | else | |
2447 | { | |
2448 | int regnum; | |
2449 | int printed_something = 0; | |
ab4327e0 | 2450 | |
f6efe3f8 | 2451 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
e76f1f2e | 2452 | { |
f9418c0f | 2453 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2454 | { |
2455 | printed_something = 1; | |
e76f1f2e | 2456 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2457 | } |
2458 | } | |
2459 | if (!printed_something) | |
2460 | fprintf_filtered (file, "No vector information\n"); | |
2461 | } | |
2462 | } | |
2463 | ||
2464 | static void | |
1d12d88f | 2465 | info_vector_command (const char *args, int from_tty) |
e76f1f2e | 2466 | { |
206415a3 DJ |
2467 | if (!target_has_registers) |
2468 | error (_("The program has no registers now.")); | |
2469 | ||
d80b854b | 2470 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2471 | } |
c906108c | 2472 | \f |
5fd62852 PA |
2473 | /* Kill the inferior process. Make us have no inferior. */ |
2474 | ||
2475 | static void | |
981a3fb3 | 2476 | kill_command (const char *arg, int from_tty) |
5fd62852 PA |
2477 | { |
2478 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2479 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2480 | some targets don't have processes! */ |
5fd62852 | 2481 | |
d7e15655 | 2482 | if (inferior_ptid == null_ptid) |
5fd62852 PA |
2483 | error (_("The program is not being run.")); |
2484 | if (!query (_("Kill the program being debugged? "))) | |
2485 | error (_("Not confirmed.")); | |
f67c0c91 | 2486 | |
249b5733 PA |
2487 | int pid = current_inferior ()->pid; |
2488 | /* Save the pid as a string before killing the inferior, since that | |
2489 | may unpush the current target, and we need the string after. */ | |
f2907e49 | 2490 | std::string pid_str = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
2491 | int infnum = current_inferior ()->num; |
2492 | ||
5fd62852 PA |
2493 | target_kill (); |
2494 | ||
f67c0c91 | 2495 | if (print_inferior_events) |
249b5733 | 2496 | printf_unfiltered (_("[Inferior %d (%s) killed]\n"), |
f67c0c91 SDJ |
2497 | infnum, pid_str.c_str ()); |
2498 | ||
c35b1492 PA |
2499 | /* If we still have other inferiors to debug, then don't mess with |
2500 | with their threads. */ | |
2501 | if (!have_inferiors ()) | |
5fd62852 | 2502 | { |
1777feb0 | 2503 | init_thread_list (); /* Destroy thread info. */ |
5fd62852 PA |
2504 | |
2505 | /* Killing off the inferior can leave us with a core file. If | |
2506 | so, print the state we are left in. */ | |
2507 | if (target_has_stack) | |
2508 | { | |
2509 | printf_filtered (_("In %s,\n"), target_longname); | |
08d72866 | 2510 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
5fd62852 PA |
2511 | } |
2512 | } | |
2513 | bfd_cache_close_all (); | |
2514 | } | |
c5aa993b | 2515 | |
08036331 | 2516 | /* Used in `attach&' command. Proceed threads of inferior INF iff |
74531fed | 2517 | they stopped due to debugger request, and when they did, they |
08036331 PA |
2518 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that |
2519 | have been explicitly been told to stop. */ | |
74531fed PA |
2520 | |
2521 | static void | |
08036331 | 2522 | proceed_after_attach (inferior *inf) |
74531fed PA |
2523 | { |
2524 | /* Don't error out if the current thread is running, because | |
2525 | there may be other stopped threads. */ | |
74531fed PA |
2526 | |
2527 | /* Backup current thread and selected frame. */ | |
5ed8105e | 2528 | scoped_restore_current_thread restore_thread; |
74531fed | 2529 | |
08036331 PA |
2530 | for (thread_info *thread : inf->non_exited_threads ()) |
2531 | if (!thread->executing | |
2532 | && !thread->stop_requested | |
2533 | && thread->suspend.stop_signal == GDB_SIGNAL_0) | |
2534 | { | |
2535 | switch_to_thread (thread); | |
2536 | clear_proceed_status (0); | |
2537 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
2538 | } | |
74531fed PA |
2539 | } |
2540 | ||
6efcd9a8 | 2541 | /* See inferior.h. */ |
c906108c | 2542 | |
6efcd9a8 PA |
2543 | void |
2544 | setup_inferior (int from_tty) | |
9356cf8d | 2545 | { |
d6b48e9c | 2546 | struct inferior *inferior; |
9356cf8d | 2547 | |
d6b48e9c | 2548 | inferior = current_inferior (); |
6efcd9a8 | 2549 | inferior->needs_setup = 0; |
9356cf8d PA |
2550 | |
2551 | /* If no exec file is yet known, try to determine it from the | |
2552 | process itself. */ | |
a10de604 | 2553 | if (get_exec_file (0) == NULL) |
e99b03dc | 2554 | exec_file_locate_attach (inferior_ptid.pid (), 1, from_tty); |
9356cf8d PA |
2555 | else |
2556 | { | |
2557 | reopen_exec_file (); | |
2558 | reread_symbols (); | |
2559 | } | |
2560 | ||
2561 | /* Take any necessary post-attaching actions for this platform. */ | |
e99b03dc | 2562 | target_post_attach (inferior_ptid.pid ()); |
9356cf8d | 2563 | |
8b88a78e | 2564 | post_create_inferior (current_top_target (), from_tty); |
6efcd9a8 PA |
2565 | } |
2566 | ||
2567 | /* What to do after the first program stops after attaching. */ | |
2568 | enum attach_post_wait_mode | |
2569 | { | |
2570 | /* Do nothing. Leaves threads as they are. */ | |
2571 | ATTACH_POST_WAIT_NOTHING, | |
2572 | ||
2573 | /* Re-resume threads that are marked running. */ | |
2574 | ATTACH_POST_WAIT_RESUME, | |
2575 | ||
2576 | /* Stop all threads. */ | |
2577 | ATTACH_POST_WAIT_STOP, | |
2578 | }; | |
2579 | ||
2580 | /* Called after we've attached to a process and we've seen it stop for | |
2581 | the first time. If ASYNC_EXEC is true, re-resume threads that | |
2582 | should be running. Else if ATTACH, */ | |
2583 | ||
2584 | static void | |
a121b7c1 | 2585 | attach_post_wait (const char *args, int from_tty, enum attach_post_wait_mode mode) |
6efcd9a8 PA |
2586 | { |
2587 | struct inferior *inferior; | |
9356cf8d | 2588 | |
6efcd9a8 PA |
2589 | inferior = current_inferior (); |
2590 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2591 | ||
2592 | if (inferior->needs_setup) | |
2593 | setup_inferior (from_tty); | |
2594 | ||
2595 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2596 | { |
2597 | /* The user requested an `attach&', so be sure to leave threads | |
2598 | that didn't get a signal running. */ | |
2599 | ||
2600 | /* Immediatelly resume all suspended threads of this inferior, | |
2601 | and this inferior only. This should have no effect on | |
2602 | already running threads. If a thread has been stopped with a | |
2603 | signal, leave it be. */ | |
2604 | if (non_stop) | |
08036331 | 2605 | proceed_after_attach (inferior); |
74531fed PA |
2606 | else |
2607 | { | |
a493e3e2 | 2608 | if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed | 2609 | { |
70509625 | 2610 | clear_proceed_status (0); |
64ce06e4 | 2611 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2612 | } |
2613 | } | |
2614 | } | |
6efcd9a8 | 2615 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2616 | { |
74531fed PA |
2617 | /* The user requested a plain `attach', so be sure to leave |
2618 | the inferior stopped. */ | |
2619 | ||
74531fed PA |
2620 | /* At least the current thread is already stopped. */ |
2621 | ||
2622 | /* In all-stop, by definition, all threads have to be already | |
2623 | stopped at this point. In non-stop, however, although the | |
2624 | selected thread is stopped, others may still be executing. | |
2625 | Be sure to explicitly stop all threads of the process. This | |
2626 | should have no effect on already stopped threads. */ | |
066f6b6e | 2627 | if (non_stop) |
f2907e49 | 2628 | target_stop (ptid_t (inferior->pid)); |
066f6b6e PA |
2629 | else if (target_is_non_stop_p ()) |
2630 | { | |
066f6b6e | 2631 | struct thread_info *lowest = inferior_thread (); |
066f6b6e PA |
2632 | |
2633 | stop_all_threads (); | |
2634 | ||
2635 | /* It's not defined which thread will report the attach | |
2636 | stop. For consistency, always select the thread with | |
2637 | lowest GDB number, which should be the main thread, if it | |
2638 | still exists. */ | |
08036331 PA |
2639 | for (thread_info *thread : current_inferior ()->non_exited_threads ()) |
2640 | if (thread->inf->num < lowest->inf->num | |
2641 | || thread->per_inf_num < lowest->per_inf_num) | |
2642 | lowest = thread; | |
066f6b6e | 2643 | |
00431a78 | 2644 | switch_to_thread (lowest); |
066f6b6e | 2645 | } |
74531fed PA |
2646 | |
2647 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2648 | normal_stop (); |
2649 | if (deprecated_attach_hook) | |
2650 | deprecated_attach_hook (); | |
2651 | } | |
2652 | } | |
2653 | ||
bfec99b2 | 2654 | struct attach_command_continuation_args |
9356cf8d PA |
2655 | { |
2656 | char *args; | |
2657 | int from_tty; | |
6efcd9a8 | 2658 | enum attach_post_wait_mode mode; |
bfec99b2 | 2659 | }; |
9356cf8d | 2660 | |
bfec99b2 | 2661 | static void |
fa4cd53f | 2662 | attach_command_continuation (void *args, int err) |
bfec99b2 | 2663 | { |
9a3c8263 SM |
2664 | struct attach_command_continuation_args *a |
2665 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2666 | |
fa4cd53f PA |
2667 | if (err) |
2668 | return; | |
2669 | ||
6efcd9a8 | 2670 | attach_post_wait (a->args, a->from_tty, a->mode); |
9356cf8d PA |
2671 | } |
2672 | ||
604ead4a PA |
2673 | static void |
2674 | attach_command_continuation_free_args (void *args) | |
2675 | { | |
9a3c8263 SM |
2676 | struct attach_command_continuation_args *a |
2677 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2678 | |
604ead4a PA |
2679 | xfree (a->args); |
2680 | xfree (a); | |
2681 | } | |
2682 | ||
6efcd9a8 PA |
2683 | /* "attach" command entry point. Takes a program started up outside |
2684 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2685 | and allows us to start debugging it. */ | |
2686 | ||
c906108c | 2687 | void |
0b39b52e | 2688 | attach_command (const char *args, int from_tty) |
c906108c | 2689 | { |
6c4486e6 | 2690 | int async_exec; |
b3ccfe11 | 2691 | struct target_ops *attach_target; |
6efcd9a8 PA |
2692 | struct inferior *inferior = current_inferior (); |
2693 | enum attach_post_wait_mode mode; | |
c906108c | 2694 | |
c5aa993b | 2695 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2696 | |
f5656ead | 2697 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2698 | /* Don't complain if all processes share the same symbol |
2699 | space. */ | |
8a305172 PA |
2700 | ; |
2701 | else if (target_has_execution) | |
c906108c | 2702 | { |
9e2f0ad4 | 2703 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2704 | target_kill (); |
2705 | else | |
8a3fe4f8 | 2706 | error (_("Not killed.")); |
c906108c SS |
2707 | } |
2708 | ||
fd79ecee DJ |
2709 | /* Clean up any leftovers from other runs. Some other things from |
2710 | this function should probably be moved into target_pre_inferior. */ | |
2711 | target_pre_inferior (from_tty); | |
2712 | ||
6be9a197 TT |
2713 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
2714 | args = stripped.get (); | |
8bc2fe48 | 2715 | |
b3ccfe11 TT |
2716 | attach_target = find_attach_target (); |
2717 | ||
8bc2fe48 PA |
2718 | prepare_execution_command (attach_target, async_exec); |
2719 | ||
f6ac5f3d | 2720 | if (non_stop && !attach_target->supports_non_stop ()) |
9908b566 VP |
2721 | error (_("Cannot attach to this target in non-stop mode")); |
2722 | ||
f6ac5f3d | 2723 | attach_target->attach (args, from_tty); |
b3ccfe11 TT |
2724 | /* to_attach should push the target, so after this point we |
2725 | shouldn't refer to attach_target again. */ | |
2726 | attach_target = NULL; | |
c906108c SS |
2727 | |
2728 | /* Set up the "saved terminal modes" of the inferior | |
2729 | based on what modes we are starting it with. */ | |
223ffa71 | 2730 | target_terminal::init (); |
c906108c | 2731 | |
7180e04a PA |
2732 | /* Install inferior's terminal modes. This may look like a no-op, |
2733 | as we've just saved them above, however, this does more than | |
2734 | restore terminal settings: | |
2735 | ||
2736 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2737 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2738 | stop would end up as a spurious Quit. | |
2739 | ||
2740 | - removes stdin from the event loop, which we need if attaching | |
2741 | in the foreground, otherwise on targets that report an initial | |
2742 | stop on attach (which are most) we'd process input/commands | |
2743 | while we're in the event loop waiting for that stop. That is, | |
2744 | before the attach continuation runs and the command is really | |
2745 | finished. */ | |
223ffa71 | 2746 | target_terminal::inferior (); |
7180e04a | 2747 | |
c906108c SS |
2748 | /* Set up execution context to know that we should return from |
2749 | wait_for_inferior as soon as the target reports a stop. */ | |
2750 | init_wait_for_inferior (); | |
70509625 | 2751 | clear_proceed_status (0); |
c906108c | 2752 | |
6efcd9a8 PA |
2753 | inferior->needs_setup = 1; |
2754 | ||
fbea99ea | 2755 | if (target_is_non_stop_p ()) |
74531fed PA |
2756 | { |
2757 | /* If we find that the current thread isn't stopped, explicitly | |
2758 | do so now, because we're going to install breakpoints and | |
2759 | poke at memory. */ | |
2760 | ||
2761 | if (async_exec) | |
2762 | /* The user requested an `attach&'; stop just one thread. */ | |
2763 | target_stop (inferior_ptid); | |
2764 | else | |
2765 | /* The user requested an `attach', so stop all threads of this | |
2766 | inferior. */ | |
e99b03dc | 2767 | target_stop (ptid_t (inferior_ptid.pid ())); |
74531fed PA |
2768 | } |
2769 | ||
6efcd9a8 PA |
2770 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2771 | ||
dc177b7a PA |
2772 | /* Some system don't generate traps when attaching to inferior. |
2773 | E.g. Mach 3 or GNU hurd. */ | |
f6ac5f3d | 2774 | if (!target_attach_no_wait ()) |
c5aa993b | 2775 | { |
0b333c5e | 2776 | struct attach_command_continuation_args *a; |
d6b48e9c | 2777 | |
1777feb0 | 2778 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2779 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2780 | need a way for handle_inferior_event to reset the stop_signal | |
2781 | variable after an attach, and this is what | |
2782 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2783 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2784 | |
3b12939d | 2785 | /* Wait for stop. */ |
0b333c5e PA |
2786 | a = XNEW (struct attach_command_continuation_args); |
2787 | a->args = xstrdup (args); | |
2788 | a->from_tty = from_tty; | |
6efcd9a8 | 2789 | a->mode = mode; |
0b333c5e PA |
2790 | add_inferior_continuation (attach_command_continuation, a, |
2791 | attach_command_continuation_free_args); | |
0b333c5e PA |
2792 | |
2793 | if (!target_is_async_p ()) | |
2794 | mark_infrun_async_event_handler (); | |
2795 | return; | |
dc177b7a | 2796 | } |
6426a772 | 2797 | |
6efcd9a8 | 2798 | attach_post_wait (args, from_tty, mode); |
c906108c SS |
2799 | } |
2800 | ||
1941c569 PA |
2801 | /* We had just found out that the target was already attached to an |
2802 | inferior. PTID points at a thread of this new inferior, that is | |
2803 | the most likely to be stopped right now, but not necessarily so. | |
2804 | The new inferior is assumed to be already added to the inferior | |
2805 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2806 | this inferior running, except those we've explicitly seen reported | |
2807 | as stopped. */ | |
2808 | ||
2809 | void | |
00431a78 | 2810 | notice_new_inferior (thread_info *thr, int leave_running, int from_tty) |
1941c569 | 2811 | { |
5ed8105e PA |
2812 | enum attach_post_wait_mode mode |
2813 | = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; | |
1941c569 | 2814 | |
5ed8105e | 2815 | gdb::optional<scoped_restore_current_thread> restore_thread; |
1941c569 | 2816 | |
5ed8105e PA |
2817 | if (inferior_ptid != null_ptid) |
2818 | restore_thread.emplace (); | |
1941c569 | 2819 | |
6efcd9a8 PA |
2820 | /* Avoid reading registers -- we haven't fetched the target |
2821 | description yet. */ | |
00431a78 | 2822 | switch_to_thread_no_regs (thr); |
1941c569 PA |
2823 | |
2824 | /* When we "notice" a new inferior we need to do all the things we | |
2825 | would normally do if we had just attached to it. */ | |
2826 | ||
00431a78 | 2827 | if (thr->executing) |
1941c569 | 2828 | { |
0b333c5e | 2829 | struct attach_command_continuation_args *a; |
1941c569 PA |
2830 | struct inferior *inferior = current_inferior (); |
2831 | ||
2832 | /* We're going to install breakpoints, and poke at memory, | |
2833 | ensure that the inferior is stopped for a moment while we do | |
2834 | that. */ | |
2835 | target_stop (inferior_ptid); | |
2836 | ||
16c381f0 | 2837 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2838 | |
2839 | /* Wait for stop before proceeding. */ | |
0b333c5e PA |
2840 | a = XNEW (struct attach_command_continuation_args); |
2841 | a->args = xstrdup (""); | |
2842 | a->from_tty = from_tty; | |
6efcd9a8 | 2843 | a->mode = mode; |
0b333c5e PA |
2844 | add_inferior_continuation (attach_command_continuation, a, |
2845 | attach_command_continuation_free_args); | |
1941c569 | 2846 | |
0b333c5e | 2847 | return; |
1941c569 PA |
2848 | } |
2849 | ||
6efcd9a8 | 2850 | attach_post_wait ("" /* args */, from_tty, mode); |
1941c569 PA |
2851 | } |
2852 | ||
c906108c SS |
2853 | /* |
2854 | * detach_command -- | |
2855 | * takes a program previously attached to and detaches it. | |
2856 | * The program resumes execution and will no longer stop | |
2857 | * on signals, etc. We better not have left any breakpoints | |
2858 | * in the program or it'll die when it hits one. For this | |
2859 | * to work, it may be necessary for the process to have been | |
2860 | * previously attached. It *might* work if the program was | |
2861 | * started via the normal ptrace (PTRACE_TRACEME). | |
2862 | */ | |
2863 | ||
6418d433 | 2864 | void |
981a3fb3 | 2865 | detach_command (const char *args, int from_tty) |
c906108c | 2866 | { |
1f5d0fc9 | 2867 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a | 2868 | |
d7e15655 | 2869 | if (inferior_ptid == null_ptid) |
d729566a PA |
2870 | error (_("The program is not being run.")); |
2871 | ||
2f9d54cf PA |
2872 | query_if_trace_running (from_tty); |
2873 | ||
2874 | disconnect_tracing (); | |
d5551862 | 2875 | |
6e1e1966 | 2876 | target_detach (current_inferior (), from_tty); |
50c71eaf | 2877 | |
63000888 PA |
2878 | /* The current inferior process was just detached successfully. Get |
2879 | rid of breakpoints that no longer make sense. Note we don't do | |
2880 | this within target_detach because that is also used when | |
2881 | following child forks, and in that case we will want to transfer | |
2882 | breakpoints to the child, not delete them. */ | |
2883 | breakpoint_init_inferior (inf_exited); | |
2884 | ||
50c71eaf PA |
2885 | /* If the solist is global across inferiors, don't clear it when we |
2886 | detach from a single inferior. */ | |
f5656ead | 2887 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 2888 | no_shared_libraries (NULL, from_tty); |
8a305172 | 2889 | |
9a4105ab AC |
2890 | if (deprecated_detach_hook) |
2891 | deprecated_detach_hook (); | |
c906108c SS |
2892 | } |
2893 | ||
6ad8ae5c DJ |
2894 | /* Disconnect from the current target without resuming it (leaving it |
2895 | waiting for a debugger). | |
2896 | ||
2897 | We'd better not have left any breakpoints in the program or the | |
2898 | next debugger will get confused. Currently only supported for some | |
2899 | remote targets, since the normal attach mechanisms don't work on | |
2900 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
2901 | ||
2902 | static void | |
0b39b52e | 2903 | disconnect_command (const char *args, int from_tty) |
6ad8ae5c | 2904 | { |
1777feb0 | 2905 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
2906 | query_if_trace_running (from_tty); |
2907 | disconnect_tracing (); | |
6ad8ae5c | 2908 | target_disconnect (args, from_tty); |
e85a822c | 2909 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 2910 | init_thread_list (); |
9a4105ab AC |
2911 | if (deprecated_detach_hook) |
2912 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
2913 | } |
2914 | ||
77ebaa5a VP |
2915 | void |
2916 | interrupt_target_1 (int all_threads) | |
2917 | { | |
2918 | ptid_t ptid; | |
abbb1732 | 2919 | |
77ebaa5a VP |
2920 | if (all_threads) |
2921 | ptid = minus_one_ptid; | |
2922 | else | |
2923 | ptid = inferior_ptid; | |
e42de8c7 PA |
2924 | |
2925 | if (non_stop) | |
2926 | target_stop (ptid); | |
2927 | else | |
e671cd59 | 2928 | target_interrupt (); |
252fbfc8 PA |
2929 | |
2930 | /* Tag the thread as having been explicitly requested to stop, so | |
2931 | other parts of gdb know not to resume this thread automatically, | |
2932 | if it was stopped due to an internal event. Limit this to | |
2933 | non-stop mode, as when debugging a multi-threaded application in | |
2934 | all-stop mode, we will only get one stop event --- it's undefined | |
2935 | which thread will report the event. */ | |
2936 | if (non_stop) | |
2937 | set_stop_requested (ptid, 1); | |
77ebaa5a VP |
2938 | } |
2939 | ||
6339bfc4 DE |
2940 | /* interrupt [-a] |
2941 | Stop the execution of the target while running in async mode, in | |
17e5269b | 2942 | the background. In all-stop, stop the whole process. In non-stop |
8cae4b3f PA |
2943 | mode, stop the current thread only by default, or stop all threads |
2944 | if the `-a' switch is used. */ | |
2945 | ||
1dd5fedc | 2946 | static void |
0b39b52e | 2947 | interrupt_command (const char *args, int from_tty) |
43ff13b4 | 2948 | { |
362646f5 | 2949 | if (target_can_async_p ()) |
43ff13b4 | 2950 | { |
8cae4b3f PA |
2951 | int all_threads = 0; |
2952 | ||
1777feb0 | 2953 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 2954 | |
8cae4b3f | 2955 | if (args != NULL |
61012eef | 2956 | && startswith (args, "-a")) |
8cae4b3f PA |
2957 | all_threads = 1; |
2958 | ||
2959 | if (!non_stop && all_threads) | |
2960 | error (_("-a is meaningless in all-stop mode.")); | |
2961 | ||
77ebaa5a | 2962 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
2963 | } |
2964 | } | |
2965 | ||
cc86d1cb YQ |
2966 | /* See inferior.h. */ |
2967 | ||
2968 | void | |
2969 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
2970 | struct frame_info *frame, const char *args) | |
c906108c | 2971 | { |
cc86d1cb YQ |
2972 | int regnum; |
2973 | int printed_something = 0; | |
d80b854b | 2974 | |
f6efe3f8 | 2975 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
23e3a7ac | 2976 | { |
cc86d1cb | 2977 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 2978 | { |
cc86d1cb YQ |
2979 | printed_something = 1; |
2980 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 2981 | } |
23e3a7ac | 2982 | } |
cc86d1cb YQ |
2983 | if (!printed_something) |
2984 | fprintf_filtered (file, "No floating-point info " | |
2985 | "available for this processor.\n"); | |
23e3a7ac AC |
2986 | } |
2987 | ||
2988 | static void | |
1d12d88f | 2989 | info_float_command (const char *args, int from_tty) |
23e3a7ac | 2990 | { |
cc86d1cb YQ |
2991 | struct frame_info *frame; |
2992 | ||
206415a3 DJ |
2993 | if (!target_has_registers) |
2994 | error (_("The program has no registers now.")); | |
2995 | ||
cc86d1cb YQ |
2996 | frame = get_selected_frame (NULL); |
2997 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
2998 | } |
2999 | \f | |
c906108c | 3000 | static void |
981a3fb3 | 3001 | unset_command (const char *args, int from_tty) |
c906108c | 3002 | { |
3e43a32a MS |
3003 | printf_filtered (_("\"unset\" must be followed by the " |
3004 | "name of an unset subcommand.\n")); | |
635c7e8a | 3005 | help_list (unsetlist, "unset ", all_commands, gdb_stdout); |
c906108c SS |
3006 | } |
3007 | ||
145b16a9 UW |
3008 | /* Implement `info proc' family of commands. */ |
3009 | ||
3010 | static void | |
69f476a3 | 3011 | info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty) |
145b16a9 | 3012 | { |
3030c96e UW |
3013 | struct gdbarch *gdbarch = get_current_arch (); |
3014 | ||
451b7c33 TT |
3015 | if (!target_info_proc (args, what)) |
3016 | { | |
3017 | if (gdbarch_info_proc_p (gdbarch)) | |
3018 | gdbarch_info_proc (gdbarch, args, what); | |
3019 | else | |
3020 | error (_("Not supported on this target.")); | |
3021 | } | |
145b16a9 UW |
3022 | } |
3023 | ||
3024 | /* Implement `info proc' when given without any futher parameters. */ | |
3025 | ||
3026 | static void | |
981a3fb3 | 3027 | info_proc_cmd (const char *args, int from_tty) |
145b16a9 UW |
3028 | { |
3029 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
3030 | } | |
3031 | ||
3032 | /* Implement `info proc mappings'. */ | |
3033 | ||
3034 | static void | |
69f476a3 | 3035 | info_proc_cmd_mappings (const char *args, int from_tty) |
145b16a9 UW |
3036 | { |
3037 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
3038 | } | |
3039 | ||
3040 | /* Implement `info proc stat'. */ | |
3041 | ||
3042 | static void | |
69f476a3 | 3043 | info_proc_cmd_stat (const char *args, int from_tty) |
145b16a9 UW |
3044 | { |
3045 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
3046 | } | |
3047 | ||
3048 | /* Implement `info proc status'. */ | |
3049 | ||
3050 | static void | |
69f476a3 | 3051 | info_proc_cmd_status (const char *args, int from_tty) |
145b16a9 UW |
3052 | { |
3053 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
3054 | } | |
3055 | ||
3056 | /* Implement `info proc cwd'. */ | |
3057 | ||
3058 | static void | |
69f476a3 | 3059 | info_proc_cmd_cwd (const char *args, int from_tty) |
145b16a9 UW |
3060 | { |
3061 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
3062 | } | |
3063 | ||
3064 | /* Implement `info proc cmdline'. */ | |
3065 | ||
3066 | static void | |
69f476a3 | 3067 | info_proc_cmd_cmdline (const char *args, int from_tty) |
145b16a9 UW |
3068 | { |
3069 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
3070 | } | |
3071 | ||
3072 | /* Implement `info proc exe'. */ | |
3073 | ||
3074 | static void | |
69f476a3 | 3075 | info_proc_cmd_exe (const char *args, int from_tty) |
145b16a9 UW |
3076 | { |
3077 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
3078 | } | |
3079 | ||
e98ee8c4 JB |
3080 | /* Implement `info proc files'. */ |
3081 | ||
3082 | static void | |
3083 | info_proc_cmd_files (const char *args, int from_tty) | |
3084 | { | |
3085 | info_proc_cmd_1 (args, IP_FILES, from_tty); | |
3086 | } | |
3087 | ||
145b16a9 UW |
3088 | /* Implement `info proc all'. */ |
3089 | ||
3090 | static void | |
69f476a3 | 3091 | info_proc_cmd_all (const char *args, int from_tty) |
145b16a9 UW |
3092 | { |
3093 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
3094 | } | |
3095 | ||
4e5a4f58 JB |
3096 | /* This help string is used for the run, start, and starti commands. |
3097 | It is defined as a macro to prevent duplication. */ | |
3098 | ||
3099 | #define RUN_ARGS_HELP \ | |
3100 | "You may specify arguments to give it.\n\ | |
3101 | Args may include \"*\", or \"[...]\"; they are expanded using the\n\ | |
3102 | shell that will start the program (specified by the \"$SHELL\" environment\n\ | |
3103 | variable). Input and output redirection with \">\", \"<\", or \">>\"\n\ | |
3104 | are also allowed.\n\ | |
3105 | \n\ | |
3106 | With no arguments, uses arguments last specified (with \"run\" or \n\ | |
3107 | \"set args\"). To cancel previous arguments and run with no arguments,\n\ | |
3108 | use \"set args\" without arguments.\n\ | |
3109 | \n\ | |
3110 | To start the inferior without using a shell, use \"set startup-with-shell off\"." | |
3111 | ||
c906108c | 3112 | void |
fba45db2 | 3113 | _initialize_infcmd (void) |
c906108c | 3114 | { |
145b16a9 | 3115 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3116 | struct cmd_list_element *c = NULL; |
6f937416 | 3117 | const char *cmd_name; |
3cb3b8df | 3118 | |
1777feb0 | 3119 | /* Add the filename of the terminal connected to inferior I/O. */ |
0a1ddfa6 SM |
3120 | add_setshow_optional_filename_cmd ("inferior-tty", class_run, |
3121 | &inferior_io_terminal_scratch, _("\ | |
3cb3b8df BR |
3122 | Set terminal for future runs of program being debugged."), _("\ |
3123 | Show terminal for future runs of program being debugged."), _("\ | |
0a1ddfa6 SM |
3124 | Usage: set inferior-tty [TTY]\n\n\ |
3125 | If TTY is omitted, the default behavior of using the same terminal as GDB\n\ | |
3126 | is restored."), | |
3127 | set_inferior_tty_command, | |
3128 | show_inferior_tty_command, | |
3129 | &setlist, &showlist); | |
21873064 YQ |
3130 | cmd_name = "inferior-tty"; |
3131 | c = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
3132 | gdb_assert (c != NULL); | |
3133 | add_alias_cmd ("tty", c, class_alias, 0, &cmdlist); | |
c906108c | 3134 | |
6ace3df1 YQ |
3135 | cmd_name = "args"; |
3136 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3137 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3138 | Set argument list to give program being debugged when it is started."), _("\ |
3139 | Show argument list to give program being debugged when it is started."), _("\ | |
3140 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3141 | set_args_command, |
3142 | show_args_command, | |
3143 | &setlist, &showlist); | |
3144 | c = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
3145 | gdb_assert (c != NULL); | |
3146 | set_cmd_completer (c, filename_completer); | |
c906108c | 3147 | |
d092c5a2 SDJ |
3148 | cmd_name = "cwd"; |
3149 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3150 | &inferior_cwd_scratch, _("\ | |
3151 | Set the current working directory to be used when the inferior is started.\n\ | |
3152 | Changing this setting does not have any effect on inferiors that are\n\ | |
3153 | already running."), | |
3154 | _("\ | |
3155 | Show the current working directory that is used when the inferior is started."), | |
3156 | _("\ | |
3157 | Use this command to change the current working directory that will be used\n\ | |
3158 | when the inferior is started. This setting does not affect GDB's current\n\ | |
3159 | working directory."), | |
3160 | set_cwd_command, | |
3161 | show_cwd_command, | |
3162 | &setlist, &showlist); | |
3163 | c = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
3164 | gdb_assert (c != NULL); | |
3165 | set_cmd_completer (c, filename_completer); | |
3166 | ||
1a966eab AC |
3167 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3168 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3169 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3170 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3171 | environment to be given to the program."), &showlist); |
5ba2abeb | 3172 | set_cmd_completer (c, noop_completer); |
c906108c SS |
3173 | |
3174 | add_prefix_cmd ("unset", no_class, unset_command, | |
1bedd215 | 3175 | _("Complement to certain \"set\" commands."), |
c906108c | 3176 | &unsetlist, "unset ", 0, &cmdlist); |
c5aa993b | 3177 | |
1a966eab AC |
3178 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3179 | Cancel environment variable VAR for the program.\n\ | |
3180 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3181 | &unsetlist); |
5ba2abeb | 3182 | set_cmd_completer (c, noop_completer); |
c906108c | 3183 | |
1a966eab AC |
3184 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3185 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3186 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3187 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3188 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3189 | &setlist); |
5ba2abeb | 3190 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3191 | |
1bedd215 AC |
3192 | c = add_com ("path", class_files, path_command, _("\ |
3193 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3194 | $cwd in the path means the current working directory.\n\ |
3195 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3196 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3197 | fully linked executable files and separately compiled object files as \ |
3198 | needed.")); | |
5ba2abeb | 3199 | set_cmd_completer (c, filename_completer); |
c906108c | 3200 | |
1a966eab AC |
3201 | c = add_cmd ("paths", no_class, path_info, _("\ |
3202 | Current search path for finding object files.\n\ | |
c906108c SS |
3203 | $cwd in the path means the current working directory.\n\ |
3204 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3205 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3206 | fully linked executable files and separately compiled object files as \ |
3207 | needed."), | |
c906108c | 3208 | &showlist); |
5ba2abeb | 3209 | set_cmd_completer (c, noop_completer); |
c906108c | 3210 | |
2277426b PA |
3211 | add_prefix_cmd ("kill", class_run, kill_command, |
3212 | _("Kill execution of program being debugged."), | |
3213 | &killlist, "kill ", 0, &cmdlist); | |
5fd62852 | 3214 | |
1bedd215 AC |
3215 | add_com ("attach", class_run, attach_command, _("\ |
3216 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3217 | This command attaches to another target, of the same type as your last\n\ |
3218 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3219 | The command may take as argument a process id or a device file.\n\ | |
3220 | For a process id, you must have permission to send the process a signal,\n\ | |
3221 | and it must have the same effective uid as the debugger.\n\ | |
3222 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3223 | program running in the process, looking first in the current working\n\ | |
3224 | directory, or (if not found there) using the source file search path\n\ | |
3225 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3226 | to specify the program, and to load its symbol table.")); |
c906108c | 3227 | |
f73adfeb | 3228 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3229 | Detach a process or file previously attached.\n\ |
c906108c | 3230 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb AS |
3231 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
3232 | &detachlist, "detach ", 0, &cmdlist); | |
c906108c | 3233 | |
1bedd215 AC |
3234 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3235 | Disconnect from a target.\n\ | |
6ad8ae5c | 3236 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3237 | all targets.")); |
6ad8ae5c | 3238 | |
de0bea00 | 3239 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3240 | Continue program with the specified signal.\n\ |
3241 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3242 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3243 | \n\ |
3244 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3245 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3246 | and you want to resume the program while discarding the signal.\n\ |
3247 | \n\ | |
3248 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3249 | the current thread only.")); | |
3250 | set_cmd_completer (c, signal_completer); | |
3251 | ||
3252 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3253 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3254 | Usage: queue-signal SIGNAL\n\ | |
3255 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3256 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3257 | \n\ | |
3258 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3259 | the current thread. This is useful in cases where the program stopped\n\ | |
3260 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3261 | \n\ | |
3262 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3263 | the current thread only.")); | |
de0bea00 | 3264 | set_cmd_completer (c, signal_completer); |
c906108c | 3265 | |
1bedd215 AC |
3266 | add_com ("stepi", class_run, stepi_command, _("\ |
3267 | Step one instruction exactly.\n\ | |
486c7739 MF |
3268 | Usage: stepi [N]\n\ |
3269 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3270 | reason).")); |
c906108c SS |
3271 | add_com_alias ("si", "stepi", class_alias, 0); |
3272 | ||
1bedd215 AC |
3273 | add_com ("nexti", class_run, nexti_command, _("\ |
3274 | Step one instruction, but proceed through subroutine calls.\n\ | |
486c7739 MF |
3275 | Usage: nexti [N]\n\ |
3276 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3277 | reason).")); |
c906108c SS |
3278 | add_com_alias ("ni", "nexti", class_alias, 0); |
3279 | ||
1bedd215 AC |
3280 | add_com ("finish", class_run, finish_command, _("\ |
3281 | Execute until selected stack frame returns.\n\ | |
486c7739 | 3282 | Usage: finish\n\ |
1bedd215 | 3283 | Upon return, the value returned is printed and put in the value history.")); |
0e479716 | 3284 | add_com_alias ("fin", "finish", class_run, 1); |
c906108c | 3285 | |
1bedd215 AC |
3286 | add_com ("next", class_run, next_command, _("\ |
3287 | Step program, proceeding through subroutine calls.\n\ | |
486c7739 MF |
3288 | Usage: next [N]\n\ |
3289 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3290 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3291 | the call, in effect treating it as a single source line.")); |
c906108c | 3292 | add_com_alias ("n", "next", class_run, 1); |
c906108c | 3293 | |
1bedd215 AC |
3294 | add_com ("step", class_run, step_command, _("\ |
3295 | Step program until it reaches a different source line.\n\ | |
486c7739 MF |
3296 | Usage: step [N]\n\ |
3297 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3298 | reason).")); |
c906108c SS |
3299 | add_com_alias ("s", "step", class_run, 1); |
3300 | ||
1bedd215 AC |
3301 | c = add_com ("until", class_run, until_command, _("\ |
3302 | Execute until the program reaches a source line greater than the current\n\ | |
3e43a32a MS |
3303 | or a specified location (same args as break command) within the current \ |
3304 | frame.")); | |
5ba2abeb | 3305 | set_cmd_completer (c, location_completer); |
c906108c | 3306 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 3307 | |
1bedd215 | 3308 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3309 | Continue the program up to the given location (same form as args for break \ |
3310 | command).\n\ | |
1bedd215 | 3311 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3312 | set_cmd_completer (c, location_completer); |
3313 | ||
1bedd215 AC |
3314 | c = add_com ("jump", class_run, jump_command, _("\ |
3315 | Continue program being debugged at specified line or address.\n\ | |
0a8ba311 | 3316 | Usage: jump LOCATION\n\ |
c906108c | 3317 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3318 | for an address to start at.")); |
5ba2abeb | 3319 | set_cmd_completer (c, location_completer); |
c1d780c2 | 3320 | add_com_alias ("j", "jump", class_run, 1); |
c906108c | 3321 | |
df983543 | 3322 | add_com ("continue", class_run, continue_command, _("\ |
1bedd215 | 3323 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3324 | Usage: continue [N]\n\ |
c906108c SS |
3325 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3326 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3327 | the breakpoint won't break until the Nth time it is reached).\n\ |
3328 | \n\ | |
3329 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3330 | otherwise all the threads in the program are continued. To \n\ | |
3331 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3332 | Specifying -a and an ignore count simultaneously is an error.")); | |
c906108c SS |
3333 | add_com_alias ("c", "cont", class_run, 1); |
3334 | add_com_alias ("fg", "cont", class_run, 1); | |
3335 | ||
1bedd215 | 3336 | c = add_com ("run", class_run, run_command, _("\ |
4e5a4f58 JB |
3337 | Start debugged program.\n" |
3338 | RUN_ARGS_HELP)); | |
5ba2abeb | 3339 | set_cmd_completer (c, filename_completer); |
c906108c | 3340 | add_com_alias ("r", "run", class_run, 1); |
c906108c | 3341 | |
1bedd215 | 3342 | c = add_com ("start", class_run, start_command, _("\ |
4e5a4f58 JB |
3343 | Start the debugged program stopping at the beginning of the main procedure.\n" |
3344 | RUN_ARGS_HELP)); | |
3345 | set_cmd_completer (c, filename_completer); | |
3346 | ||
3347 | c = add_com ("starti", class_run, starti_command, _("\ | |
3348 | Start the debugged program stopping at the first instruction.\n" | |
3349 | RUN_ARGS_HELP)); | |
a4d5f2e0 JB |
3350 | set_cmd_completer (c, filename_completer); |
3351 | ||
0a07590b | 3352 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3353 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3354 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3355 | otherwise all the threads in the program are stopped. To \n\ | |
3356 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3357 | |
11db9430 | 3358 | c = add_info ("registers", info_registers_command, _("\ |
1bedd215 | 3359 | List of integer registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3360 | One or more register names as argument means describe the given registers.\n\ |
3361 | One or more register group names as argument means describe the registers\n\ | |
3362 | in the named register groups.")); | |
7194c49b | 3363 | add_info_alias ("r", "registers", 1); |
71c24708 | 3364 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3365 | |
11db9430 | 3366 | c = add_info ("all-registers", info_all_registers_command, _("\ |
1bedd215 | 3367 | List of all registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3368 | One or more register names as argument means describe the given registers.\n\ |
3369 | One or more register group names as argument means describe the registers\n\ | |
3370 | in the named register groups.")); | |
71c24708 | 3371 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3372 | |
11db9430 | 3373 | add_info ("program", info_program_command, |
1bedd215 | 3374 | _("Execution status of the program.")); |
c906108c | 3375 | |
11db9430 | 3376 | add_info ("float", info_float_command, |
1bedd215 | 3377 | _("Print the status of the floating point unit\n")); |
c906108c | 3378 | |
11db9430 | 3379 | add_info ("vector", info_vector_command, |
1bedd215 | 3380 | _("Print the status of the vector unit\n")); |
145b16a9 UW |
3381 | |
3382 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3383 | _("\ | |
73f1bd76 | 3384 | Show additional information about a process.\n\ |
145b16a9 UW |
3385 | Specify any process id, or use the program being debugged by default."), |
3386 | &info_proc_cmdlist, "info proc ", | |
3387 | 1/*allow-unknown*/, &infolist); | |
3388 | ||
3389 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
73f1bd76 | 3390 | List memory regions mapped by the specified process."), |
145b16a9 UW |
3391 | &info_proc_cmdlist); |
3392 | ||
3393 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3394 | List process info from /proc/PID/stat."), | |
3395 | &info_proc_cmdlist); | |
3396 | ||
3397 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3398 | List process info from /proc/PID/status."), | |
3399 | &info_proc_cmdlist); | |
3400 | ||
3401 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
73f1bd76 | 3402 | List current working directory of the specified process."), |
145b16a9 UW |
3403 | &info_proc_cmdlist); |
3404 | ||
3405 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
73f1bd76 | 3406 | List command line arguments of the specified process."), |
145b16a9 UW |
3407 | &info_proc_cmdlist); |
3408 | ||
3409 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
73f1bd76 | 3410 | List absolute filename for executable of the specified process."), |
145b16a9 UW |
3411 | &info_proc_cmdlist); |
3412 | ||
e98ee8c4 JB |
3413 | add_cmd ("files", class_info, info_proc_cmd_files, _("\ |
3414 | List files opened by the specified process."), | |
3415 | &info_proc_cmdlist); | |
3416 | ||
145b16a9 | 3417 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ |
73f1bd76 | 3418 | List all available info about the specified process."), |
145b16a9 | 3419 | &info_proc_cmdlist); |
c906108c | 3420 | } |