Commit | Line | Data |
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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 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 SS |
22 | #include "symtab.h" |
23 | #include "gdbtypes.h" | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
45741a9c | 26 | #include "infrun.h" |
268a13a5 | 27 | #include "gdbsupport/environ.h" |
c906108c SS |
28 | #include "value.h" |
29 | #include "gdbcmd.h" | |
1adeb98a | 30 | #include "symfile.h" |
c906108c SS |
31 | #include "gdbcore.h" |
32 | #include "target.h" | |
33 | #include "language.h" | |
c906108c | 34 | #include "objfiles.h" |
c94fdfd0 | 35 | #include "completer.h" |
8b93c638 | 36 | #include "ui-out.h" |
36160dc4 | 37 | #include "regcache.h" |
f9418c0f | 38 | #include "reggroups.h" |
fe898f56 | 39 | #include "block.h" |
a77053c2 | 40 | #include "solib.h" |
f9418c0f | 41 | #include <ctype.h> |
76727919 | 42 | #include "observable.h" |
424163ea | 43 | #include "target-descriptions.h" |
ad842144 | 44 | #include "user-regs.h" |
a0ef4274 | 45 | #include "gdbthread.h" |
79a45b7d | 46 | #include "valprint.h" |
edb3359d | 47 | #include "inline-frame.h" |
573cda03 | 48 | #include "tracepoint.h" |
09cee04b | 49 | #include "inf-loop.h" |
be34f849 | 50 | #include "continuations.h" |
f8eba3c6 | 51 | #include "linespec.h" |
243a9253 | 52 | #include "thread-fsm.h" |
3b12939d | 53 | #include "top.h" |
8980e177 | 54 | #include "interps.h" |
4a4c04f1 | 55 | #include "skip.h" |
268a13a5 | 56 | #include "gdbsupport/gdb_optional.h" |
b46a8d7c | 57 | #include "source.h" |
7f6aba03 | 58 | #include "cli/cli-style.h" |
d5551862 | 59 | |
a58dd373 EZ |
60 | /* Local functions: */ |
61 | ||
a14ed312 | 62 | static void until_next_command (int); |
c906108c | 63 | |
0b39b52e | 64 | static void step_1 (int, int, const char *); |
c906108c | 65 | |
c906108c | 66 | #define ERROR_NO_INFERIOR \ |
8a3fe4f8 | 67 | if (!target_has_execution) error (_("The program is not being run.")); |
c906108c | 68 | |
3e43a32a MS |
69 | /* Scratch area where string containing arguments to give to the |
70 | program will be stored by 'set args'. As soon as anything is | |
71 | stored, notice_args_set will move it into per-inferior storage. | |
1777feb0 | 72 | Arguments are separated by spaces. Empty string (pointer to '\0') |
3e43a32a | 73 | means no args. */ |
c906108c | 74 | |
3f81c18a | 75 | static char *inferior_args_scratch; |
c906108c | 76 | |
d092c5a2 SDJ |
77 | /* Scratch area where the new cwd will be stored by 'set cwd'. */ |
78 | ||
79 | static char *inferior_cwd_scratch; | |
80 | ||
3f81c18a VP |
81 | /* Scratch area where 'set inferior-tty' will store user-provided value. |
82 | We'll immediate copy it into per-inferior storage. */ | |
552c04a7 | 83 | |
3f81c18a | 84 | static char *inferior_io_terminal_scratch; |
c906108c SS |
85 | |
86 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
87 | Since various parts of infrun.c test this to see whether there is a program | |
88 | being debugged it should be nonzero (currently 3 is used) for remote | |
89 | debugging. */ | |
90 | ||
39f77062 | 91 | ptid_t inferior_ptid; |
c906108c | 92 | |
c906108c SS |
93 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
94 | ||
aa7d318d | 95 | enum stop_stack_kind stop_stack_dummy; |
c906108c SS |
96 | |
97 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
98 | process. */ | |
99 | ||
100 | int stopped_by_random_signal; | |
101 | ||
c906108c | 102 | \f |
1777feb0 | 103 | /* Accessor routines. */ |
07091751 | 104 | |
3f81c18a VP |
105 | /* Set the io terminal for the current inferior. Ownership of |
106 | TERMINAL_NAME is not transferred. */ | |
107 | ||
3cb3b8df BR |
108 | void |
109 | set_inferior_io_terminal (const char *terminal_name) | |
110 | { | |
3f81c18a | 111 | xfree (current_inferior ()->terminal); |
0a1ddfa6 SM |
112 | |
113 | if (terminal_name != NULL && *terminal_name != '\0') | |
114 | current_inferior ()->terminal = xstrdup (terminal_name); | |
115 | else | |
116 | current_inferior ()->terminal = NULL; | |
3cb3b8df BR |
117 | } |
118 | ||
119 | const char * | |
120 | get_inferior_io_terminal (void) | |
121 | { | |
3f81c18a VP |
122 | return current_inferior ()->terminal; |
123 | } | |
124 | ||
125 | static void | |
eb4c3f4a | 126 | set_inferior_tty_command (const char *args, int from_tty, |
3f81c18a VP |
127 | struct cmd_list_element *c) |
128 | { | |
129 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
130 | Now route it to current inferior. */ | |
131 | set_inferior_io_terminal (inferior_io_terminal_scratch); | |
132 | } | |
133 | ||
134 | static void | |
135 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
136 | struct cmd_list_element *c, const char *value) | |
137 | { | |
138 | /* Note that we ignore the passed-in value in favor of computing it | |
139 | directly. */ | |
275f2e57 | 140 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
abbb1732 | 141 | |
275f2e57 DJ |
142 | if (inferior_io_terminal == NULL) |
143 | inferior_io_terminal = ""; | |
3f81c18a | 144 | fprintf_filtered (gdb_stdout, |
275f2e57 DJ |
145 | _("Terminal for future runs of program being debugged " |
146 | "is \"%s\".\n"), inferior_io_terminal); | |
3cb3b8df BR |
147 | } |
148 | ||
cbaaa0ca | 149 | const char * |
07091751 FN |
150 | get_inferior_args (void) |
151 | { | |
3f81c18a | 152 | if (current_inferior ()->argc != 0) |
552c04a7 | 153 | { |
8c4b5f3d MW |
154 | gdb::array_view<char * const> args (current_inferior ()->argv, |
155 | current_inferior ()->argc); | |
156 | std::string n = construct_inferior_arguments (args); | |
c699004a | 157 | set_inferior_args (n.c_str ()); |
552c04a7 TT |
158 | } |
159 | ||
3f81c18a VP |
160 | if (current_inferior ()->args == NULL) |
161 | current_inferior ()->args = xstrdup (""); | |
552c04a7 | 162 | |
3f81c18a | 163 | return current_inferior ()->args; |
07091751 FN |
164 | } |
165 | ||
3f81c18a VP |
166 | /* Set the arguments for the current inferior. Ownership of |
167 | NEWARGS is not transferred. */ | |
168 | ||
169 | void | |
0b39b52e | 170 | set_inferior_args (const char *newargs) |
07091751 | 171 | { |
3f81c18a VP |
172 | xfree (current_inferior ()->args); |
173 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; | |
174 | current_inferior ()->argc = 0; | |
175 | current_inferior ()->argv = 0; | |
07091751 | 176 | } |
c5aa993b | 177 | |
552c04a7 TT |
178 | void |
179 | set_inferior_args_vector (int argc, char **argv) | |
180 | { | |
3f81c18a VP |
181 | current_inferior ()->argc = argc; |
182 | current_inferior ()->argv = argv; | |
552c04a7 TT |
183 | } |
184 | ||
185 | /* Notice when `set args' is run. */ | |
6339bfc4 | 186 | |
552c04a7 | 187 | static void |
eb4c3f4a | 188 | set_args_command (const char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 189 | { |
3f81c18a VP |
190 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
191 | Now route it to current inferior. */ | |
192 | set_inferior_args (inferior_args_scratch); | |
552c04a7 TT |
193 | } |
194 | ||
195 | /* Notice when `show args' is run. */ | |
6339bfc4 | 196 | |
552c04a7 | 197 | static void |
3f81c18a VP |
198 | show_args_command (struct ui_file *file, int from_tty, |
199 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 200 | { |
258c00cc TT |
201 | /* Note that we ignore the passed-in value in favor of computing it |
202 | directly. */ | |
203 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
552c04a7 TT |
204 | } |
205 | ||
268a13a5 | 206 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 | 207 | |
bc3b087d | 208 | void |
d092c5a2 SDJ |
209 | set_inferior_cwd (const char *cwd) |
210 | { | |
211 | struct inferior *inf = current_inferior (); | |
212 | ||
213 | gdb_assert (inf != NULL); | |
214 | ||
215 | if (cwd == NULL) | |
216 | inf->cwd.reset (); | |
217 | else | |
218 | inf->cwd.reset (xstrdup (cwd)); | |
219 | } | |
220 | ||
268a13a5 | 221 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 SDJ |
222 | |
223 | const char * | |
224 | get_inferior_cwd () | |
225 | { | |
226 | return current_inferior ()->cwd.get (); | |
227 | } | |
228 | ||
229 | /* Handle the 'set cwd' command. */ | |
230 | ||
231 | static void | |
eb4c3f4a | 232 | set_cwd_command (const char *args, int from_tty, struct cmd_list_element *c) |
d092c5a2 SDJ |
233 | { |
234 | if (*inferior_cwd_scratch == '\0') | |
235 | set_inferior_cwd (NULL); | |
236 | else | |
237 | set_inferior_cwd (inferior_cwd_scratch); | |
238 | } | |
239 | ||
240 | /* Handle the 'show cwd' command. */ | |
241 | ||
242 | static void | |
243 | show_cwd_command (struct ui_file *file, int from_tty, | |
244 | struct cmd_list_element *c, const char *value) | |
245 | { | |
246 | const char *cwd = get_inferior_cwd (); | |
247 | ||
248 | if (cwd == NULL) | |
249 | fprintf_filtered (gdb_stdout, | |
250 | _("\ | |
251 | You have not set the inferior's current working directory.\n\ | |
bc3b087d SDJ |
252 | The inferior will inherit GDB's cwd if native debugging, or the remote\n\ |
253 | server's cwd if remote debugging.\n")); | |
d092c5a2 SDJ |
254 | else |
255 | fprintf_filtered (gdb_stdout, | |
256 | _("Current working directory that will be used " | |
257 | "when starting the inferior is \"%s\".\n"), cwd); | |
258 | } | |
259 | ||
552c04a7 | 260 | |
6c4486e6 PA |
261 | /* This function strips the '&' character (indicating background |
262 | execution) that is added as *the last* of the arguments ARGS of a | |
263 | command. A copy of the incoming ARGS without the '&' is returned, | |
264 | unless the resulting string after stripping is empty, in which case | |
265 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
266 | whether the '&' character was found. */ | |
6339bfc4 | 267 | |
6be9a197 | 268 | static gdb::unique_xmalloc_ptr<char> |
6c4486e6 | 269 | strip_bg_char (const char *args, int *bg_char_p) |
43ff13b4 | 270 | { |
6c4486e6 | 271 | const char *p; |
c5aa993b | 272 | |
6c4486e6 PA |
273 | if (args == NULL || *args == '\0') |
274 | { | |
275 | *bg_char_p = 0; | |
276 | return NULL; | |
277 | } | |
c5aa993b | 278 | |
6c4486e6 PA |
279 | p = args + strlen (args); |
280 | if (p[-1] == '&') | |
43ff13b4 | 281 | { |
6c4486e6 PA |
282 | p--; |
283 | while (p > args && isspace (p[-1])) | |
284 | p--; | |
285 | ||
286 | *bg_char_p = 1; | |
287 | if (p != args) | |
6be9a197 TT |
288 | return gdb::unique_xmalloc_ptr<char> |
289 | (savestring (args, p - args)); | |
6c4486e6 | 290 | else |
6be9a197 | 291 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
43ff13b4 | 292 | } |
6c4486e6 PA |
293 | |
294 | *bg_char_p = 0; | |
b02f78f9 | 295 | return make_unique_xstrdup (args); |
43ff13b4 JM |
296 | } |
297 | ||
281b533b DJ |
298 | /* Common actions to take after creating any sort of inferior, by any |
299 | means (running, attaching, connecting, et cetera). The target | |
300 | should be stopped. */ | |
301 | ||
302 | void | |
303 | post_create_inferior (struct target_ops *target, int from_tty) | |
304 | { | |
ce406537 | 305 | |
b79599ff | 306 | /* Be sure we own the terminal in case write operations are performed. */ |
223ffa71 | 307 | target_terminal::ours_for_output (); |
b79599ff | 308 | |
424163ea DJ |
309 | /* If the target hasn't taken care of this already, do it now. |
310 | Targets which need to access registers during to_open, | |
311 | to_create_inferior, or to_attach should do it earlier; but many | |
312 | don't need to. */ | |
313 | target_find_description (); | |
314 | ||
ce406537 PA |
315 | /* Now that we know the register layout, retrieve current PC. But |
316 | if the PC is unavailable (e.g., we're opening a core file with | |
317 | missing registers info), ignore it. */ | |
f2ffa92b PA |
318 | thread_info *thr = inferior_thread (); |
319 | ||
320 | thr->suspend.stop_pc = 0; | |
a70b8144 | 321 | try |
ce406537 | 322 | { |
8dc3273e SM |
323 | regcache *rc = get_thread_regcache (thr); |
324 | thr->suspend.stop_pc = regcache_read_pc (rc); | |
ce406537 | 325 | } |
230d2906 | 326 | catch (const gdb_exception_error &ex) |
7556d4a4 PA |
327 | { |
328 | if (ex.error != NOT_AVAILABLE_ERROR) | |
eedc3f4f | 329 | throw; |
7556d4a4 | 330 | } |
f698437e | 331 | |
50c71eaf PA |
332 | if (exec_bfd) |
333 | { | |
2eff07b3 PP |
334 | const unsigned solib_add_generation |
335 | = current_program_space->solib_add_generation; | |
336 | ||
9353355f DJ |
337 | /* Create the hooks to handle shared library load and unload |
338 | events. */ | |
268a4a75 | 339 | solib_create_inferior_hook (from_tty); |
268a4a75 | 340 | |
2eff07b3 PP |
341 | if (current_program_space->solib_add_generation == solib_add_generation) |
342 | { | |
343 | /* The platform-specific hook should load initial shared libraries, | |
344 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
345 | targets should be fixed anyway. Call it only after the solib | |
346 | target has been initialized by solib_create_inferior_hook. */ | |
347 | ||
348 | if (info_verbose) | |
349 | warning (_("platform-specific solib_create_inferior_hook did " | |
350 | "not load initial shared libraries.")); | |
351 | ||
352 | /* If the solist is global across processes, there's no need to | |
353 | refetch it here. */ | |
f5656ead | 354 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 355 | solib_add (NULL, 0, auto_solib_add); |
2eff07b3 | 356 | } |
9353355f DJ |
357 | } |
358 | ||
ea5d7a99 PM |
359 | /* If the user sets watchpoints before execution having started, |
360 | then she gets software watchpoints, because GDB can't know which | |
361 | target will end up being pushed, or if it supports hardware | |
362 | watchpoints or not. breakpoint_re_set takes care of promoting | |
363 | watchpoints to hardware watchpoints if possible, however, if this | |
364 | new inferior doesn't load shared libraries or we don't pull in | |
365 | symbols from any other source on this target/arch, | |
366 | breakpoint_re_set is never called. Call it now so that software | |
367 | watchpoints get a chance to be promoted to hardware watchpoints | |
368 | if the now pushed target supports hardware watchpoints. */ | |
369 | breakpoint_re_set (); | |
370 | ||
76727919 | 371 | gdb::observers::inferior_created.notify (target, from_tty); |
281b533b DJ |
372 | } |
373 | ||
a4d5f2e0 JB |
374 | /* Kill the inferior if already running. This function is designed |
375 | to be called when we are about to start the execution of the program | |
376 | from the beginning. Ask the user to confirm that he wants to restart | |
377 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 378 | |
8edfe269 | 379 | static void |
a4d5f2e0 JB |
380 | kill_if_already_running (int from_tty) |
381 | { | |
d7e15655 | 382 | if (inferior_ptid != null_ptid && target_has_execution) |
c906108c | 383 | { |
8edfe269 DJ |
384 | /* Bail out before killing the program if we will not be able to |
385 | restart it. */ | |
386 | target_require_runnable (); | |
387 | ||
adf40b2e | 388 | if (from_tty |
9e2f0ad4 HZ |
389 | && !query (_("The program being debugged has been started already.\n\ |
390 | Start it from the beginning? "))) | |
8a3fe4f8 | 391 | error (_("Program not restarted.")); |
c906108c | 392 | target_kill (); |
c906108c | 393 | } |
a4d5f2e0 JB |
394 | } |
395 | ||
329ea579 | 396 | /* See inferior.h. */ |
8bc2fe48 | 397 | |
329ea579 | 398 | void |
8bc2fe48 PA |
399 | prepare_execution_command (struct target_ops *target, int background) |
400 | { | |
401 | /* If we get a request for running in the bg but the target | |
402 | doesn't support it, error out. */ | |
f6ac5f3d | 403 | if (background && !target->can_async_p ()) |
8bc2fe48 PA |
404 | error (_("Asynchronous execution not supported on this target.")); |
405 | ||
0b333c5e | 406 | if (!background) |
8bc2fe48 | 407 | { |
0b333c5e PA |
408 | /* If we get a request for running in the fg, then we need to |
409 | simulate synchronous (fg) execution. Note no cleanup is | |
410 | necessary for this. stdin is re-enabled whenever an error | |
411 | reaches the top level. */ | |
a8836c93 | 412 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
413 | } |
414 | } | |
415 | ||
4e5a4f58 JB |
416 | /* Determine how the new inferior will behave. */ |
417 | ||
418 | enum run_how | |
419 | { | |
420 | /* Run program without any explicit stop during startup. */ | |
421 | RUN_NORMAL, | |
422 | ||
423 | /* Stop at the beginning of the program's main function. */ | |
424 | RUN_STOP_AT_MAIN, | |
425 | ||
426 | /* Stop at the first instruction of the program. */ | |
427 | RUN_STOP_AT_FIRST_INSN | |
428 | }; | |
429 | ||
430 | /* Implement the "run" command. Force a stop during program start if | |
431 | requested by RUN_HOW. */ | |
f67a969f | 432 | |
a4d5f2e0 | 433 | static void |
0b39b52e | 434 | run_command_1 (const char *args, int from_tty, enum run_how run_how) |
a4d5f2e0 | 435 | { |
7c5ded6a | 436 | const char *exec_file; |
79a45e25 | 437 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 438 | struct target_ops *run_target; |
6c4486e6 | 439 | int async_exec; |
c906108c | 440 | |
a4d5f2e0 JB |
441 | dont_repeat (); |
442 | ||
443 | kill_if_already_running (from_tty); | |
3c35e65b UW |
444 | |
445 | init_wait_for_inferior (); | |
c906108c SS |
446 | clear_breakpoint_hit_counts (); |
447 | ||
fd79ecee DJ |
448 | /* Clean up any leftovers from other runs. Some other things from |
449 | this function should probably be moved into target_pre_inferior. */ | |
450 | target_pre_inferior (from_tty); | |
451 | ||
39ad761d JB |
452 | /* The comment here used to read, "The exec file is re-read every |
453 | time we do a generic_mourn_inferior, so we just have to worry | |
454 | about the symbol file." The `generic_mourn_inferior' function | |
455 | gets called whenever the program exits. However, suppose the | |
456 | program exits, and *then* the executable file changes? We need | |
457 | to check again here. Since reopen_exec_file doesn't do anything | |
458 | if the timestamp hasn't changed, I don't see the harm. */ | |
459 | reopen_exec_file (); | |
c906108c SS |
460 | reread_symbols (); |
461 | ||
6be9a197 TT |
462 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
463 | args = stripped.get (); | |
f67a969f | 464 | |
8bc2fe48 PA |
465 | /* Do validation and preparation before possibly changing anything |
466 | in the inferior. */ | |
39ad761d | 467 | |
b3ccfe11 TT |
468 | run_target = find_run_target (); |
469 | ||
8bc2fe48 PA |
470 | prepare_execution_command (run_target, async_exec); |
471 | ||
f6ac5f3d | 472 | if (non_stop && !run_target->supports_non_stop ()) |
9908b566 VP |
473 | error (_("The target does not support running in non-stop mode.")); |
474 | ||
8bc2fe48 PA |
475 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
476 | ||
4e5a4f58 JB |
477 | /* Insert temporary breakpoint in main function if requested. */ |
478 | if (run_how == RUN_STOP_AT_MAIN) | |
e242fd12 SM |
479 | { |
480 | std::string arg = string_printf ("-qualified %s", main_name ()); | |
481 | tbreak_command (arg.c_str (), 0); | |
482 | } | |
8bc2fe48 | 483 | |
7c5ded6a | 484 | exec_file = get_exec_file (0); |
8bc2fe48 | 485 | |
c906108c SS |
486 | /* We keep symbols from add-symbol-file, on the grounds that the |
487 | user might want to add some symbols before running the program | |
488 | (right?). But sometimes (dynamic loading where the user manually | |
489 | introduces the new symbols with add-symbol-file), the code which | |
490 | the symbols describe does not persist between runs. Currently | |
491 | the user has to manually nuke all symbols between runs if they | |
492 | want them to go away (PR 2207). This is probably reasonable. */ | |
493 | ||
8bc2fe48 PA |
494 | /* If there were other args, beside '&', process them. */ |
495 | if (args != NULL) | |
496 | set_inferior_args (args); | |
c906108c SS |
497 | |
498 | if (from_tty) | |
499 | { | |
112e8700 SM |
500 | uiout->field_string (NULL, "Starting program"); |
501 | uiout->text (": "); | |
8b93c638 | 502 | if (exec_file) |
112e8700 SM |
503 | uiout->field_string ("execfile", exec_file); |
504 | uiout->spaces (1); | |
552c04a7 TT |
505 | /* We call get_inferior_args() because we might need to compute |
506 | the value now. */ | |
112e8700 SM |
507 | uiout->field_string ("infargs", get_inferior_args ()); |
508 | uiout->text ("\n"); | |
509 | uiout->flush (); | |
c906108c SS |
510 | } |
511 | ||
552c04a7 TT |
512 | /* We call get_inferior_args() because we might need to compute |
513 | the value now. */ | |
f6ac5f3d PA |
514 | run_target->create_inferior (exec_file, |
515 | std::string (get_inferior_args ()), | |
516 | current_inferior ()->environment.envp (), | |
517 | from_tty); | |
b3ccfe11 TT |
518 | /* to_create_inferior should push the target, so after this point we |
519 | shouldn't refer to run_target again. */ | |
520 | run_target = NULL; | |
281b533b | 521 | |
29f49a6a PA |
522 | /* We're starting off a new process. When we get out of here, in |
523 | non-stop mode, finish the state of all threads of that process, | |
524 | but leave other threads alone, as they may be stopped in internal | |
525 | events --- the frontend shouldn't see them as stopped. In | |
526 | all-stop, always finish the state of all threads, as we may be | |
527 | resuming more than just the new process. */ | |
5b6d1e4f PA |
528 | process_stratum_target *finish_target; |
529 | ptid_t finish_ptid; | |
530 | if (non_stop) | |
531 | { | |
532 | finish_target = current_inferior ()->process_target (); | |
533 | finish_ptid = ptid_t (current_inferior ()->pid); | |
534 | } | |
535 | else | |
536 | { | |
537 | finish_target = nullptr; | |
538 | finish_ptid = minus_one_ptid; | |
539 | } | |
540 | scoped_finish_thread_state finish_state (finish_target, finish_ptid); | |
29f49a6a | 541 | |
de1b3c3d PA |
542 | /* Pass zero for FROM_TTY, because at this point the "run" command |
543 | has done its thing; now we are setting up the running program. */ | |
8b88a78e | 544 | post_create_inferior (current_top_target (), 0); |
281b533b | 545 | |
4e5a4f58 JB |
546 | /* Queue a pending event so that the program stops immediately. */ |
547 | if (run_how == RUN_STOP_AT_FIRST_INSN) | |
548 | { | |
549 | thread_info *thr = inferior_thread (); | |
550 | thr->suspend.waitstatus_pending_p = 1; | |
551 | thr->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED; | |
552 | thr->suspend.waitstatus.value.sig = GDB_SIGNAL_0; | |
553 | } | |
554 | ||
74d1f91e JK |
555 | /* Start the target running. Do not use -1 continuation as it would skip |
556 | breakpoint right at the entry point. */ | |
64ce06e4 | 557 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 558 | |
29f49a6a PA |
559 | /* Since there was no error, there's no need to finish the thread |
560 | states here. */ | |
731f534f | 561 | finish_state.release (); |
29f49a6a | 562 | } |
c906108c | 563 | |
f67a969f | 564 | static void |
0b39b52e | 565 | run_command (const char *args, int from_tty) |
f67a969f | 566 | { |
4e5a4f58 | 567 | run_command_1 (args, from_tty, RUN_NORMAL); |
f67a969f JB |
568 | } |
569 | ||
a4d5f2e0 JB |
570 | /* Start the execution of the program up until the beginning of the main |
571 | program. */ | |
572 | ||
573 | static void | |
0b39b52e | 574 | start_command (const char *args, int from_tty) |
a4d5f2e0 JB |
575 | { |
576 | /* Some languages such as Ada need to search inside the program | |
577 | minimal symbols for the location where to put the temporary | |
578 | breakpoint before starting. */ | |
579 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 580 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 581 | |
f67a969f | 582 | /* Run the program until reaching the main procedure... */ |
4e5a4f58 JB |
583 | run_command_1 (args, from_tty, RUN_STOP_AT_MAIN); |
584 | } | |
585 | ||
586 | /* Start the execution of the program stopping at the first | |
587 | instruction. */ | |
588 | ||
589 | static void | |
0b39b52e | 590 | starti_command (const char *args, int from_tty) |
4e5a4f58 JB |
591 | { |
592 | run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN); | |
a4d5f2e0 JB |
593 | } |
594 | ||
8cae4b3f PA |
595 | static int |
596 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
597 | { | |
74531fed PA |
598 | /* We go through all threads individually instead of compressing |
599 | into a single target `resume_all' request, because some threads | |
600 | may be stopped in internal breakpoints/events, or stopped waiting | |
601 | for its turn in the displaced stepping queue (that is, they are | |
602 | running && !executing). The target side has no idea about why | |
603 | the thread is stopped, so a `resume_all' command would resume too | |
604 | much. If/when GDB gains a way to tell the target `hold this | |
605 | thread stopped until I say otherwise', then we can optimize | |
606 | this. */ | |
00431a78 | 607 | if (thread->state != THREAD_STOPPED) |
8cae4b3f PA |
608 | return 0; |
609 | ||
5b6d1e4f PA |
610 | if (!thread->inf->has_execution ()) |
611 | return 0; | |
612 | ||
00431a78 | 613 | switch_to_thread (thread); |
70509625 | 614 | clear_proceed_status (0); |
64ce06e4 | 615 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
616 | return 0; |
617 | } | |
618 | ||
70221824 | 619 | static void |
d729566a PA |
620 | ensure_valid_thread (void) |
621 | { | |
00431a78 PA |
622 | if (inferior_ptid == null_ptid |
623 | || inferior_thread ()->state == THREAD_EXITED) | |
3e43a32a | 624 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
625 | } |
626 | ||
573cda03 | 627 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 628 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
629 | disallow those commands. */ |
630 | ||
70221824 | 631 | static void |
573cda03 SS |
632 | ensure_not_tfind_mode (void) |
633 | { | |
634 | if (get_traceframe_number () >= 0) | |
3e43a32a | 635 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
636 | } |
637 | ||
3d3fef6b YQ |
638 | /* Throw an error indicating the current thread is running. */ |
639 | ||
640 | static void | |
641 | error_is_running (void) | |
642 | { | |
643 | error (_("Cannot execute this command while " | |
644 | "the selected thread is running.")); | |
645 | } | |
646 | ||
647 | /* Calls error_is_running if the current thread is running. */ | |
648 | ||
649 | static void | |
650 | ensure_not_running (void) | |
651 | { | |
00431a78 | 652 | if (inferior_thread ()->state == THREAD_RUNNING) |
3d3fef6b YQ |
653 | error_is_running (); |
654 | } | |
655 | ||
77ebaa5a VP |
656 | void |
657 | continue_1 (int all_threads) | |
658 | { | |
3d488bfc | 659 | ERROR_NO_INFERIOR; |
573cda03 | 660 | ensure_not_tfind_mode (); |
3d488bfc | 661 | |
77ebaa5a VP |
662 | if (non_stop && all_threads) |
663 | { | |
664 | /* Don't error out if the current thread is running, because | |
abbb1732 | 665 | there may be other stopped threads. */ |
77ebaa5a | 666 | |
5ed8105e PA |
667 | /* Backup current thread and selected frame and restore on scope |
668 | exit. */ | |
669 | scoped_restore_current_thread restore_thread; | |
77ebaa5a VP |
670 | |
671 | iterate_over_threads (proceed_thread_callback, NULL); | |
672 | ||
3b12939d | 673 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
674 | { |
675 | /* If all threads in the target were already running, | |
676 | proceed_thread_callback ends up never calling proceed, | |
677 | and so nothing calls this to put the inferior's terminal | |
678 | settings in effect and remove stdin from the event loop, | |
679 | which we must when running a foreground command. E.g.: | |
680 | ||
681 | (gdb) c -a& | |
682 | Continuing. | |
683 | <all threads are running now> | |
684 | (gdb) c -a | |
685 | Continuing. | |
686 | <no thread was resumed, but the inferior now owns the terminal> | |
687 | */ | |
223ffa71 | 688 | target_terminal::inferior (); |
0ff33695 | 689 | } |
77ebaa5a VP |
690 | } |
691 | else | |
692 | { | |
d729566a | 693 | ensure_valid_thread (); |
77ebaa5a | 694 | ensure_not_running (); |
70509625 | 695 | clear_proceed_status (0); |
64ce06e4 | 696 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
697 | } |
698 | } | |
699 | ||
8cae4b3f | 700 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 701 | |
1dd5fedc | 702 | static void |
0b39b52e | 703 | continue_command (const char *args, int from_tty) |
c906108c | 704 | { |
6c4486e6 | 705 | int async_exec; |
5b6d1e4f | 706 | bool all_threads_p = false; |
6c4486e6 | 707 | |
c906108c SS |
708 | ERROR_NO_INFERIOR; |
709 | ||
1777feb0 | 710 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
711 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
712 | args = stripped.get (); | |
43ff13b4 | 713 | |
8cae4b3f PA |
714 | if (args != NULL) |
715 | { | |
61012eef | 716 | if (startswith (args, "-a")) |
8cae4b3f | 717 | { |
5b6d1e4f | 718 | all_threads_p = true; |
8cae4b3f PA |
719 | args += sizeof ("-a") - 1; |
720 | if (*args == '\0') | |
721 | args = NULL; | |
722 | } | |
723 | } | |
724 | ||
5b6d1e4f | 725 | if (!non_stop && all_threads_p) |
8cae4b3f PA |
726 | error (_("`-a' is meaningless in all-stop mode.")); |
727 | ||
5b6d1e4f | 728 | if (args != NULL && all_threads_p) |
3e43a32a MS |
729 | error (_("Can't resume all threads and specify " |
730 | "proceed count simultaneously.")); | |
8cae4b3f PA |
731 | |
732 | /* If we have an argument left, set proceed count of breakpoint we | |
733 | stopped at. */ | |
734 | if (args != NULL) | |
c906108c | 735 | { |
347bddb7 | 736 | bpstat bs = NULL; |
8671a17b PA |
737 | int num, stat; |
738 | int stopped = 0; | |
347bddb7 PA |
739 | struct thread_info *tp; |
740 | ||
741 | if (non_stop) | |
00431a78 | 742 | tp = inferior_thread (); |
347bddb7 PA |
743 | else |
744 | { | |
5b6d1e4f | 745 | process_stratum_target *last_target; |
347bddb7 | 746 | ptid_t last_ptid; |
347bddb7 | 747 | |
5b6d1e4f PA |
748 | get_last_target_status (&last_target, &last_ptid, nullptr); |
749 | tp = find_thread_ptid (last_target, last_ptid); | |
347bddb7 PA |
750 | } |
751 | if (tp != NULL) | |
16c381f0 | 752 | bs = tp->control.stop_bpstat; |
8671a17b PA |
753 | |
754 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
755 | if (stat > 0) | |
756 | { | |
757 | set_ignore_count (num, | |
8cae4b3f | 758 | parse_and_eval_long (args) - 1, |
8671a17b PA |
759 | from_tty); |
760 | /* set_ignore_count prints a message ending with a period. | |
761 | So print two spaces before "Continuing.". */ | |
762 | if (from_tty) | |
763 | printf_filtered (" "); | |
764 | stopped = 1; | |
765 | } | |
766 | ||
767 | if (!stopped && from_tty) | |
c906108c SS |
768 | { |
769 | printf_filtered | |
770 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
771 | } | |
c906108c SS |
772 | } |
773 | ||
3b12939d PA |
774 | ERROR_NO_INFERIOR; |
775 | ensure_not_tfind_mode (); | |
776 | ||
5b6d1e4f | 777 | if (!non_stop || !all_threads_p) |
3b12939d PA |
778 | { |
779 | ensure_valid_thread (); | |
780 | ensure_not_running (); | |
781 | } | |
782 | ||
8b88a78e | 783 | prepare_execution_command (current_top_target (), async_exec); |
3b12939d | 784 | |
c906108c | 785 | if (from_tty) |
a3f17187 | 786 | printf_filtered (_("Continuing.\n")); |
c906108c | 787 | |
5b6d1e4f | 788 | continue_1 (all_threads_p); |
c906108c SS |
789 | } |
790 | \f | |
29734269 | 791 | /* Record in TP the starting point of a "step" or "next" command. */ |
edb3359d DJ |
792 | |
793 | static void | |
29734269 | 794 | set_step_frame (thread_info *tp) |
edb3359d | 795 | { |
29734269 SM |
796 | /* This can be removed once this function no longer implicitly relies on the |
797 | inferior_ptid value. */ | |
798 | gdb_assert (inferior_ptid == tp->ptid); | |
799 | ||
51abb421 | 800 | frame_info *frame = get_current_frame (); |
edb3359d | 801 | |
51abb421 | 802 | symtab_and_line sal = find_frame_sal (frame); |
29734269 | 803 | set_step_info (tp, frame, sal); |
51abb421 PA |
804 | |
805 | CORE_ADDR pc = get_frame_pc (frame); | |
64ce06e4 | 806 | tp->control.step_start_function = find_pc_function (pc); |
edb3359d DJ |
807 | } |
808 | ||
c906108c SS |
809 | /* Step until outside of current statement. */ |
810 | ||
c906108c | 811 | static void |
0b39b52e | 812 | step_command (const char *count_string, int from_tty) |
c906108c SS |
813 | { |
814 | step_1 (0, 0, count_string); | |
815 | } | |
816 | ||
817 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
818 | ||
c906108c | 819 | static void |
0b39b52e | 820 | next_command (const char *count_string, int from_tty) |
c906108c SS |
821 | { |
822 | step_1 (1, 0, count_string); | |
823 | } | |
824 | ||
825 | /* Likewise, but step only one instruction. */ | |
826 | ||
1dd5fedc | 827 | static void |
0b39b52e | 828 | stepi_command (const char *count_string, int from_tty) |
c906108c SS |
829 | { |
830 | step_1 (0, 1, count_string); | |
831 | } | |
832 | ||
1dd5fedc | 833 | static void |
0b39b52e | 834 | nexti_command (const char *count_string, int from_tty) |
c906108c SS |
835 | { |
836 | step_1 (1, 1, count_string); | |
837 | } | |
838 | ||
243a9253 PA |
839 | /* Data for the FSM that manages the step/next/stepi/nexti |
840 | commands. */ | |
841 | ||
46e3ed7f | 842 | struct step_command_fsm : public thread_fsm |
243a9253 | 843 | { |
243a9253 PA |
844 | /* How many steps left in a "step N"-like command. */ |
845 | int count; | |
846 | ||
847 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
848 | int skip_subroutines; | |
849 | ||
850 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
851 | int single_inst; | |
243a9253 | 852 | |
46e3ed7f TT |
853 | explicit step_command_fsm (struct interp *cmd_interp) |
854 | : thread_fsm (cmd_interp) | |
855 | { | |
856 | } | |
243a9253 | 857 | |
46e3ed7f TT |
858 | void clean_up (struct thread_info *thread) override; |
859 | bool should_stop (struct thread_info *thread) override; | |
860 | enum async_reply_reason do_async_reply_reason () override; | |
243a9253 PA |
861 | }; |
862 | ||
243a9253 PA |
863 | /* Prepare for a step/next/etc. command. Any target resource |
864 | allocated here is undone in the FSM's clean_up method. */ | |
865 | ||
866 | static void | |
867 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
868 | int skip_subroutines, int single_inst, | |
869 | int count, struct thread_info *thread) | |
870 | { | |
871 | sm->skip_subroutines = skip_subroutines; | |
872 | sm->single_inst = single_inst; | |
873 | sm->count = count; | |
243a9253 PA |
874 | |
875 | /* Leave the si command alone. */ | |
876 | if (!sm->single_inst || sm->skip_subroutines) | |
877 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
878 | ||
879 | thread->control.stepping_command = 1; | |
880 | } | |
881 | ||
29734269 | 882 | static int prepare_one_step (thread_info *, struct step_command_fsm *sm); |
243a9253 | 883 | |
c906108c | 884 | static void |
0b39b52e | 885 | step_1 (int skip_subroutines, int single_inst, const char *count_string) |
c906108c | 886 | { |
243a9253 | 887 | int count; |
6c4486e6 | 888 | int async_exec; |
243a9253 PA |
889 | struct thread_info *thr; |
890 | struct step_command_fsm *step_sm; | |
c5aa993b | 891 | |
c906108c | 892 | ERROR_NO_INFERIOR; |
573cda03 | 893 | ensure_not_tfind_mode (); |
d729566a | 894 | ensure_valid_thread (); |
94cc34af | 895 | ensure_not_running (); |
43ff13b4 | 896 | |
6be9a197 TT |
897 | gdb::unique_xmalloc_ptr<char> stripped |
898 | = strip_bg_char (count_string, &async_exec); | |
899 | count_string = stripped.get (); | |
c5aa993b | 900 | |
8b88a78e | 901 | prepare_execution_command (current_top_target (), async_exec); |
43ff13b4 | 902 | |
bb518678 | 903 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 904 | |
243a9253 | 905 | clear_proceed_status (1); |
611c83ae | 906 | |
243a9253 PA |
907 | /* Setup the execution command state machine to handle all the COUNT |
908 | steps. */ | |
909 | thr = inferior_thread (); | |
46e3ed7f TT |
910 | step_sm = new step_command_fsm (command_interp ()); |
911 | thr->thread_fsm = step_sm; | |
611c83ae | 912 | |
243a9253 PA |
913 | step_command_fsm_prepare (step_sm, skip_subroutines, |
914 | single_inst, count, thr); | |
c2d11a7d | 915 | |
0b333c5e PA |
916 | /* Do only one step for now, before returning control to the event |
917 | loop. Let the continuation figure out how many other steps we | |
918 | need to do, and handle them one at the time, through | |
919 | step_once. */ | |
29734269 | 920 | if (!prepare_one_step (thr, step_sm)) |
243a9253 PA |
921 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
922 | else | |
923 | { | |
3b12939d PA |
924 | int proceeded; |
925 | ||
243a9253 PA |
926 | /* Stepped into an inline frame. Pretend that we've |
927 | stopped. */ | |
46e3ed7f | 928 | thr->thread_fsm->clean_up (thr); |
3b12939d PA |
929 | proceeded = normal_stop (); |
930 | if (!proceeded) | |
931 | inferior_event_handler (INF_EXEC_COMPLETE, NULL); | |
932 | all_uis_check_sync_execution_done (); | |
243a9253 | 933 | } |
c2d11a7d | 934 | } |
c906108c | 935 | |
243a9253 PA |
936 | /* Implementation of the 'should_stop' FSM method for stepping |
937 | commands. Called after we are done with one step operation, to | |
938 | check whether we need to step again, before we print the prompt and | |
939 | return control to the user. If count is > 1, returns false, as we | |
940 | will need to keep going. */ | |
6339bfc4 | 941 | |
46e3ed7f TT |
942 | bool |
943 | step_command_fsm::should_stop (struct thread_info *tp) | |
c2d11a7d | 944 | { |
243a9253 | 945 | if (tp->control.stop_step) |
f13468d9 | 946 | { |
243a9253 PA |
947 | /* There are more steps to make, and we did stop due to |
948 | ending a stepping range. Do another step. */ | |
46e3ed7f | 949 | if (--count > 0) |
29734269 | 950 | return prepare_one_step (tp, this); |
af679fd0 | 951 | |
46e3ed7f | 952 | set_finished (); |
f107f563 | 953 | } |
af679fd0 | 954 | |
46e3ed7f | 955 | return true; |
c2d11a7d JM |
956 | } |
957 | ||
243a9253 | 958 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 | 959 | |
46e3ed7f TT |
960 | void |
961 | step_command_fsm::clean_up (struct thread_info *thread) | |
bfec99b2 | 962 | { |
46e3ed7f | 963 | if (!single_inst || skip_subroutines) |
8980e177 | 964 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 PA |
965 | } |
966 | ||
967 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
968 | commands. */ | |
969 | ||
46e3ed7f TT |
970 | enum async_reply_reason |
971 | step_command_fsm::do_async_reply_reason () | |
243a9253 PA |
972 | { |
973 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
974 | } | |
975 | ||
976 | /* Prepare for one step in "step N". The actual target resumption is | |
977 | done by the caller. Return true if we're done and should thus | |
978 | report a stop to the user. Returns false if the target needs to be | |
979 | resumed. */ | |
c2d11a7d | 980 | |
243a9253 | 981 | static int |
29734269 | 982 | prepare_one_step (thread_info *tp, struct step_command_fsm *sm) |
243a9253 | 983 | { |
29734269 SM |
984 | /* This can be removed once this function no longer implicitly relies on the |
985 | inferior_ptid value. */ | |
986 | gdb_assert (inferior_ptid == tp->ptid); | |
987 | ||
243a9253 | 988 | if (sm->count > 0) |
c906108c | 989 | { |
243a9253 PA |
990 | struct frame_info *frame = get_current_frame (); |
991 | ||
29734269 | 992 | set_step_frame (tp); |
c906108c | 993 | |
243a9253 | 994 | if (!sm->single_inst) |
c906108c | 995 | { |
1641cfcc PA |
996 | CORE_ADDR pc; |
997 | ||
edb3359d | 998 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 999 | if (!sm->skip_subroutines |
00431a78 | 1000 | && inline_skipped_frames (tp)) |
edb3359d | 1001 | { |
09cee04b | 1002 | ptid_t resume_ptid; |
4a4c04f1 BE |
1003 | const char *fn = NULL; |
1004 | symtab_and_line sal; | |
1005 | struct symbol *sym; | |
09cee04b PA |
1006 | |
1007 | /* Pretend that we've ran. */ | |
1008 | resume_ptid = user_visible_resume_ptid (1); | |
5b6d1e4f | 1009 | set_running (tp->inf->process_target (), resume_ptid, true); |
09cee04b | 1010 | |
00431a78 | 1011 | step_into_inline_frame (tp); |
4a4c04f1 BE |
1012 | |
1013 | frame = get_current_frame (); | |
1014 | sal = find_frame_sal (frame); | |
1015 | sym = get_frame_function (frame); | |
1016 | ||
1017 | if (sym != NULL) | |
1018 | fn = sym->print_name (); | |
1019 | ||
1020 | if (sal.line == 0 | |
1021 | || !function_name_is_marked_for_skip (fn, sal)) | |
1022 | { | |
1023 | sm->count--; | |
29734269 | 1024 | return prepare_one_step (tp, sm); |
4a4c04f1 | 1025 | } |
edb3359d DJ |
1026 | } |
1027 | ||
1641cfcc PA |
1028 | pc = get_frame_pc (frame); |
1029 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
1030 | &tp->control.step_range_start, |
1031 | &tp->control.step_range_end); | |
5fbbeb29 | 1032 | |
c1e36e3e PA |
1033 | tp->control.may_range_step = 1; |
1034 | ||
5fbbeb29 | 1035 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 1036 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
1037 | { |
1038 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1039 | tp->control.may_range_step = 0; | |
1040 | } | |
16c381f0 | 1041 | else if (tp->control.step_range_end == 0) |
c906108c | 1042 | { |
2c02bd72 | 1043 | const char *name; |
abbb1732 | 1044 | |
1641cfcc | 1045 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
1046 | &tp->control.step_range_start, |
1047 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 1048 | error (_("Cannot find bounds of current function")); |
c906108c | 1049 | |
223ffa71 | 1050 | target_terminal::ours_for_output (); |
3e43a32a MS |
1051 | printf_filtered (_("Single stepping until exit from function %s," |
1052 | "\nwhich has no line number information.\n"), | |
1053 | name); | |
c906108c SS |
1054 | } |
1055 | } | |
1056 | else | |
1057 | { | |
1058 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1059 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1060 | if (!sm->skip_subroutines) |
c906108c SS |
1061 | /* It is stepi. |
1062 | Don't step over function calls, not even to functions lacking | |
1063 | line numbers. */ | |
16c381f0 | 1064 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1065 | } |
1066 | ||
243a9253 | 1067 | if (sm->skip_subroutines) |
16c381f0 | 1068 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1069 | |
243a9253 | 1070 | return 0; |
c906108c | 1071 | } |
243a9253 PA |
1072 | |
1073 | /* Done. */ | |
46e3ed7f | 1074 | sm->set_finished (); |
243a9253 | 1075 | return 1; |
c906108c | 1076 | } |
c2d11a7d | 1077 | |
c906108c SS |
1078 | \f |
1079 | /* Continue program at specified address. */ | |
1080 | ||
1081 | static void | |
0b39b52e | 1082 | jump_command (const char *arg, int from_tty) |
c906108c | 1083 | { |
5af949e3 | 1084 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1085 | CORE_ADDR addr; |
c906108c SS |
1086 | struct symbol *fn; |
1087 | struct symbol *sfn; | |
6c4486e6 | 1088 | int async_exec; |
c5aa993b | 1089 | |
c906108c | 1090 | ERROR_NO_INFERIOR; |
573cda03 | 1091 | ensure_not_tfind_mode (); |
d729566a | 1092 | ensure_valid_thread (); |
94cc34af | 1093 | ensure_not_running (); |
c906108c | 1094 | |
1777feb0 | 1095 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1096 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1097 | arg = stripped.get (); | |
43ff13b4 | 1098 | |
8b88a78e | 1099 | prepare_execution_command (current_top_target (), async_exec); |
43ff13b4 | 1100 | |
c906108c | 1101 | if (!arg) |
e2e0b3e5 | 1102 | error_no_arg (_("starting address")); |
c906108c | 1103 | |
6c5b2ebe PA |
1104 | std::vector<symtab_and_line> sals |
1105 | = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); | |
1106 | if (sals.size () != 1) | |
1107 | error (_("Unreasonable jump request")); | |
c906108c | 1108 | |
6c5b2ebe PA |
1109 | symtab_and_line &sal = sals[0]; |
1110 | ||
c906108c | 1111 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1112 | error (_("No source file has been specified.")); |
c906108c | 1113 | |
1777feb0 | 1114 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1115 | |
1777feb0 | 1116 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1117 | fn = get_frame_function (get_current_frame ()); |
1118 | sfn = find_pc_function (sal.pc); | |
1119 | if (fn != NULL && sfn != fn) | |
1120 | { | |
9e2f0ad4 | 1121 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
987012b8 | 1122 | fn->print_name ())) |
c906108c | 1123 | { |
8a3fe4f8 | 1124 | error (_("Not confirmed.")); |
c906108c SS |
1125 | /* NOTREACHED */ |
1126 | } | |
1127 | } | |
1128 | ||
c5aa993b | 1129 | if (sfn != NULL) |
c906108c | 1130 | { |
253342b8 DE |
1131 | struct obj_section *section; |
1132 | ||
c906108c | 1133 | fixup_symbol_section (sfn, 0); |
08be3fe3 | 1134 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sfn), sfn); |
253342b8 DE |
1135 | if (section_is_overlay (section) |
1136 | && !section_is_mapped (section)) | |
c906108c | 1137 | { |
3e43a32a MS |
1138 | if (!query (_("WARNING!!! Destination is in " |
1139 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1140 | { |
8a3fe4f8 | 1141 | error (_("Not confirmed.")); |
c906108c SS |
1142 | /* NOTREACHED */ |
1143 | } | |
1144 | } | |
1145 | } | |
1146 | ||
c906108c SS |
1147 | addr = sal.pc; |
1148 | ||
1149 | if (from_tty) | |
1150 | { | |
a3f17187 | 1151 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1152 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1153 | printf_filtered (".\n"); |
1154 | } | |
1155 | ||
70509625 | 1156 | clear_proceed_status (0); |
64ce06e4 | 1157 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1158 | } |
c906108c | 1159 | \f |
c906108c SS |
1160 | /* Continue program giving it specified signal. */ |
1161 | ||
1162 | static void | |
0b39b52e | 1163 | signal_command (const char *signum_exp, int from_tty) |
c906108c | 1164 | { |
2ea28649 | 1165 | enum gdb_signal oursig; |
6c4486e6 | 1166 | int async_exec; |
c906108c SS |
1167 | |
1168 | dont_repeat (); /* Too dangerous. */ | |
1169 | ERROR_NO_INFERIOR; | |
573cda03 | 1170 | ensure_not_tfind_mode (); |
d729566a | 1171 | ensure_valid_thread (); |
94cc34af | 1172 | ensure_not_running (); |
c906108c | 1173 | |
32c1e744 | 1174 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1175 | gdb::unique_xmalloc_ptr<char> stripped |
1176 | = strip_bg_char (signum_exp, &async_exec); | |
1177 | signum_exp = stripped.get (); | |
32c1e744 | 1178 | |
8b88a78e | 1179 | prepare_execution_command (current_top_target (), async_exec); |
32c1e744 | 1180 | |
c906108c | 1181 | if (!signum_exp) |
e2e0b3e5 | 1182 | error_no_arg (_("signal number")); |
c906108c SS |
1183 | |
1184 | /* It would be even slicker to make signal names be valid expressions, | |
1185 | (the type could be "enum $signal" or some such), then the user could | |
1186 | assign them to convenience variables. */ | |
2ea28649 | 1187 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1188 | |
a493e3e2 | 1189 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1190 | { |
1191 | /* No, try numeric. */ | |
bb518678 | 1192 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1193 | |
1194 | if (num == 0) | |
a493e3e2 | 1195 | oursig = GDB_SIGNAL_0; |
c906108c | 1196 | else |
2ea28649 | 1197 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1198 | } |
1199 | ||
70509625 PA |
1200 | /* Look for threads other than the current that this command ends up |
1201 | resuming too (due to schedlock off), and warn if they'll get a | |
1202 | signal delivered. "signal 0" is used to suppress a previous | |
1203 | signal, but if the current thread is no longer the one that got | |
1204 | the signal, then the user is potentially suppressing the signal | |
1205 | of the wrong thread. */ | |
1206 | if (!non_stop) | |
1207 | { | |
70509625 PA |
1208 | int must_confirm = 0; |
1209 | ||
1210 | /* This indicates what will be resumed. Either a single thread, | |
1211 | a whole process, or all threads of all processes. */ | |
08036331 | 1212 | ptid_t resume_ptid = user_visible_resume_ptid (0); |
5b6d1e4f PA |
1213 | process_stratum_target *resume_target |
1214 | = user_visible_resume_target (resume_ptid); | |
70509625 | 1215 | |
5b6d1e4f PA |
1216 | thread_info *current = inferior_thread (); |
1217 | ||
1218 | for (thread_info *tp : all_non_exited_threads (resume_target, resume_ptid)) | |
70509625 | 1219 | { |
5b6d1e4f | 1220 | if (tp == current) |
70509625 | 1221 | continue; |
70509625 PA |
1222 | |
1223 | if (tp->suspend.stop_signal != GDB_SIGNAL_0 | |
1224 | && signal_pass_state (tp->suspend.stop_signal)) | |
1225 | { | |
1226 | if (!must_confirm) | |
1227 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1228 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1229 | print_thread_id (tp), | |
70509625 PA |
1230 | gdb_signal_to_name (tp->suspend.stop_signal), |
1231 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
1232 | must_confirm = 1; | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | if (must_confirm | |
43792cf0 | 1237 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1238 | "still deliver the signals noted above to their respective threads.\n" |
1239 | "Continue anyway? "), | |
43792cf0 | 1240 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1241 | error (_("Not confirmed.")); |
1242 | } | |
1243 | ||
c906108c SS |
1244 | if (from_tty) |
1245 | { | |
a493e3e2 | 1246 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1247 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1248 | else |
a3f17187 | 1249 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1250 | gdb_signal_to_name (oursig)); |
c906108c SS |
1251 | } |
1252 | ||
70509625 | 1253 | clear_proceed_status (0); |
64ce06e4 | 1254 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1255 | } |
1256 | ||
81219e53 DE |
1257 | /* Queue a signal to be delivered to the current thread. */ |
1258 | ||
1259 | static void | |
0b39b52e | 1260 | queue_signal_command (const char *signum_exp, int from_tty) |
81219e53 DE |
1261 | { |
1262 | enum gdb_signal oursig; | |
1263 | struct thread_info *tp; | |
1264 | ||
1265 | ERROR_NO_INFERIOR; | |
1266 | ensure_not_tfind_mode (); | |
1267 | ensure_valid_thread (); | |
1268 | ensure_not_running (); | |
1269 | ||
1270 | if (signum_exp == NULL) | |
1271 | error_no_arg (_("signal number")); | |
1272 | ||
1273 | /* It would be even slicker to make signal names be valid expressions, | |
1274 | (the type could be "enum $signal" or some such), then the user could | |
1275 | assign them to convenience variables. */ | |
1276 | oursig = gdb_signal_from_name (signum_exp); | |
1277 | ||
1278 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1279 | { | |
1280 | /* No, try numeric. */ | |
1281 | int num = parse_and_eval_long (signum_exp); | |
1282 | ||
1283 | if (num == 0) | |
1284 | oursig = GDB_SIGNAL_0; | |
1285 | else | |
1286 | oursig = gdb_signal_from_command (num); | |
1287 | } | |
1288 | ||
1289 | if (oursig != GDB_SIGNAL_0 | |
1290 | && !signal_pass_state (oursig)) | |
1291 | error (_("Signal handling set to not pass this signal to the program.")); | |
1292 | ||
1293 | tp = inferior_thread (); | |
1294 | tp->suspend.stop_signal = oursig; | |
1295 | } | |
1296 | ||
cfc31633 PA |
1297 | /* Data for the FSM that manages the until (with no argument) |
1298 | command. */ | |
1299 | ||
46e3ed7f | 1300 | struct until_next_fsm : public thread_fsm |
fa4cd53f | 1301 | { |
cfc31633 | 1302 | /* The thread that as current when the command was executed. */ |
fa4cd53f | 1303 | int thread; |
cfc31633 | 1304 | |
46e3ed7f TT |
1305 | until_next_fsm (struct interp *cmd_interp, int thread) |
1306 | : thread_fsm (cmd_interp), | |
1307 | thread (thread) | |
1308 | { | |
1309 | } | |
cfc31633 | 1310 | |
46e3ed7f TT |
1311 | bool should_stop (struct thread_info *thread) override; |
1312 | void clean_up (struct thread_info *thread) override; | |
1313 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
1314 | }; |
1315 | ||
cfc31633 PA |
1316 | /* Implementation of the 'should_stop' FSM method for the until (with |
1317 | no arg) command. */ | |
1318 | ||
46e3ed7f TT |
1319 | bool |
1320 | until_next_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 1321 | { |
cfc31633 | 1322 | if (tp->control.stop_step) |
46e3ed7f | 1323 | set_finished (); |
cfc31633 | 1324 | |
46e3ed7f | 1325 | return true; |
cfc31633 PA |
1326 | } |
1327 | ||
1328 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1329 | arg) command. */ | |
186c406b | 1330 | |
46e3ed7f TT |
1331 | void |
1332 | until_next_fsm::clean_up (struct thread_info *thread) | |
186c406b | 1333 | { |
8980e177 | 1334 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1335 | } |
1336 | ||
1337 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1338 | (with no arg) command. */ | |
1339 | ||
46e3ed7f TT |
1340 | enum async_reply_reason |
1341 | until_next_fsm::do_async_reply_reason () | |
cfc31633 PA |
1342 | { |
1343 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1344 | } |
1345 | ||
c906108c SS |
1346 | /* Proceed until we reach a different source line with pc greater than |
1347 | our current one or exit the function. We skip calls in both cases. | |
1348 | ||
1349 | Note that eventually this command should probably be changed so | |
1350 | that only source lines are printed out when we hit the breakpoint | |
1351 | we set. This may involve changes to wait_for_inferior and the | |
1352 | proceed status code. */ | |
1353 | ||
c906108c | 1354 | static void |
fba45db2 | 1355 | until_next_command (int from_tty) |
c906108c SS |
1356 | { |
1357 | struct frame_info *frame; | |
1358 | CORE_ADDR pc; | |
1359 | struct symbol *func; | |
1360 | struct symtab_and_line sal; | |
4e1c45ea | 1361 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1362 | int thread = tp->global_num; |
cfc31633 | 1363 | struct until_next_fsm *sm; |
c5aa993b | 1364 | |
70509625 | 1365 | clear_proceed_status (0); |
29734269 | 1366 | set_step_frame (tp); |
c906108c SS |
1367 | |
1368 | frame = get_current_frame (); | |
1369 | ||
1370 | /* Step until either exited from this function or greater | |
1371 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1372 | not). */ |
c906108c | 1373 | |
1c7819ef | 1374 | pc = get_frame_pc (frame); |
c906108c | 1375 | func = find_pc_function (pc); |
c5aa993b | 1376 | |
c906108c SS |
1377 | if (!func) |
1378 | { | |
7cbd4a93 | 1379 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1380 | |
7cbd4a93 | 1381 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1382 | error (_("Execution is not within a known function.")); |
c5aa993b | 1383 | |
77e371c0 | 1384 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1385 | /* The upper-bound of step_range is exclusive. In order to make PC |
1386 | within the range, set the step_range_end with PC + 1. */ | |
1387 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1388 | } |
1389 | else | |
1390 | { | |
1391 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1392 | |
2b1ffcfd | 1393 | tp->control.step_range_start = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (func)); |
16c381f0 | 1394 | tp->control.step_range_end = sal.end; |
c906108c | 1395 | } |
c1e36e3e | 1396 | tp->control.may_range_step = 1; |
c5aa993b | 1397 | |
16c381f0 | 1398 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1399 | |
186c406b | 1400 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
5419bdae | 1401 | delete_longjmp_breakpoint_cleanup lj_deleter (thread); |
186c406b | 1402 | |
46e3ed7f TT |
1403 | sm = new until_next_fsm (command_interp (), tp->global_num); |
1404 | tp->thread_fsm = sm; | |
5419bdae | 1405 | lj_deleter.release (); |
fa4cd53f | 1406 | |
cfc31633 | 1407 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1408 | } |
1409 | ||
c5aa993b | 1410 | static void |
0b39b52e | 1411 | until_command (const char *arg, int from_tty) |
c906108c | 1412 | { |
6c4486e6 | 1413 | int async_exec; |
43ff13b4 | 1414 | |
4247603b | 1415 | ERROR_NO_INFERIOR; |
573cda03 | 1416 | ensure_not_tfind_mode (); |
4247603b PA |
1417 | ensure_valid_thread (); |
1418 | ensure_not_running (); | |
573cda03 | 1419 | |
1777feb0 | 1420 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1421 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1422 | arg = stripped.get (); | |
43ff13b4 | 1423 | |
8b88a78e | 1424 | prepare_execution_command (current_top_target (), async_exec); |
43ff13b4 | 1425 | |
c906108c | 1426 | if (arg) |
ae66c1fc | 1427 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1428 | else |
1429 | until_next_command (from_tty); | |
1430 | } | |
ae66c1fc EZ |
1431 | |
1432 | static void | |
0b39b52e | 1433 | advance_command (const char *arg, int from_tty) |
ae66c1fc | 1434 | { |
6c4486e6 | 1435 | int async_exec; |
ae66c1fc | 1436 | |
4247603b | 1437 | ERROR_NO_INFERIOR; |
573cda03 | 1438 | ensure_not_tfind_mode (); |
4247603b PA |
1439 | ensure_valid_thread (); |
1440 | ensure_not_running (); | |
573cda03 | 1441 | |
ae66c1fc | 1442 | if (arg == NULL) |
e2e0b3e5 | 1443 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1444 | |
1445 | /* Find out whether we must run in the background. */ | |
6be9a197 TT |
1446 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1447 | arg = stripped.get (); | |
ae66c1fc | 1448 | |
8b88a78e | 1449 | prepare_execution_command (current_top_target (), async_exec); |
ae66c1fc EZ |
1450 | |
1451 | until_break_command (arg, from_tty, 1); | |
1452 | } | |
c906108c | 1453 | \f |
cc72b2a2 | 1454 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1455 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1456 | right after an inferior call has finished. */ | |
f941662f | 1457 | |
cc72b2a2 | 1458 | struct value * |
0700e23e | 1459 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1460 | { |
215c69dc YQ |
1461 | regcache *stop_regs = get_current_regcache (); |
1462 | struct gdbarch *gdbarch = stop_regs->arch (); | |
44e5158b AC |
1463 | struct value *value; |
1464 | ||
f168693b | 1465 | value_type = check_typedef (value_type); |
78134374 | 1466 | gdb_assert (value_type->code () != TYPE_CODE_VOID); |
11cf8741 | 1467 | |
92ad9cd9 AC |
1468 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1469 | call, it's possible (with no help from the architecture vector) | |
1470 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1471 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1472 | inferior function call code. In fact, when inferior function |
1473 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1474 | |
6a3a010b | 1475 | switch (gdbarch_return_value (gdbarch, function, value_type, |
c055b101 | 1476 | NULL, NULL, NULL)) |
44e5158b | 1477 | { |
750eb019 AC |
1478 | case RETURN_VALUE_REGISTER_CONVENTION: |
1479 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1480 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1481 | value = allocate_value (value_type); |
215c69dc | 1482 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
990a07ab | 1483 | value_contents_raw (value), NULL); |
750eb019 AC |
1484 | break; |
1485 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1486 | value = NULL; | |
1487 | break; | |
1488 | default: | |
e2e0b3e5 | 1489 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1490 | } |
bb472c1e | 1491 | |
cc72b2a2 KP |
1492 | return value; |
1493 | } | |
1494 | ||
243a9253 PA |
1495 | /* The captured function return value/type and its position in the |
1496 | value history. */ | |
cc72b2a2 | 1497 | |
243a9253 | 1498 | struct return_value_info |
cc72b2a2 | 1499 | { |
243a9253 PA |
1500 | /* The captured return value. May be NULL if we weren't able to |
1501 | retrieve it. See get_return_value. */ | |
1502 | struct value *value; | |
1503 | ||
1504 | /* The return type. In some cases, we'll not be able extract the | |
1505 | return value, but we always know the type. */ | |
1506 | struct type *type; | |
1507 | ||
1508 | /* If we captured a value, this is the value history index. */ | |
1509 | int value_history_index; | |
1510 | }; | |
1511 | ||
1512 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1513 | |
243a9253 PA |
1514 | static void |
1515 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1516 | { | |
1517 | if (rv->value != NULL) | |
31db7b6c | 1518 | { |
79a45b7d TT |
1519 | struct value_print_options opts; |
1520 | ||
31db7b6c | 1521 | /* Print it. */ |
112e8700 SM |
1522 | uiout->text ("Value returned is "); |
1523 | uiout->field_fmt ("gdb-result-var", "$%d", | |
d7e74731 | 1524 | rv->value_history_index); |
112e8700 | 1525 | uiout->text (" = "); |
5d9a0608 | 1526 | get_user_print_options (&opts); |
d7e74731 | 1527 | |
000439d5 TT |
1528 | if (opts.finish_print) |
1529 | { | |
1530 | string_file stb; | |
1531 | value_print (rv->value, &stb, &opts); | |
1532 | uiout->field_stream ("return-value", stb); | |
1533 | } | |
1534 | else | |
7f6aba03 TT |
1535 | uiout->field_string ("return-value", _("<not displayed>"), |
1536 | metadata_style.style ()); | |
112e8700 | 1537 | uiout->text ("\n"); |
31db7b6c MK |
1538 | } |
1539 | else | |
1540 | { | |
2f408ecb | 1541 | std::string type_name = type_to_string (rv->type); |
112e8700 SM |
1542 | uiout->text ("Value returned has type: "); |
1543 | uiout->field_string ("return-type", type_name.c_str ()); | |
1544 | uiout->text ("."); | |
1545 | uiout->text (" Cannot determine contents\n"); | |
31db7b6c | 1546 | } |
11cf8741 JM |
1547 | } |
1548 | ||
243a9253 PA |
1549 | /* Print the result of a function at the end of a 'finish' command. |
1550 | RV points at an object representing the captured return value/type | |
1551 | and its position in the value history. */ | |
1552 | ||
1553 | void | |
1554 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1555 | { | |
f097f5ad | 1556 | if (rv->type == NULL |
78134374 | 1557 | || check_typedef (rv->type)->code () == TYPE_CODE_VOID) |
243a9253 PA |
1558 | return; |
1559 | ||
a70b8144 | 1560 | try |
243a9253 PA |
1561 | { |
1562 | /* print_return_value_1 can throw an exception in some | |
1563 | circumstances. We need to catch this so that we still | |
1564 | delete the breakpoint. */ | |
1565 | print_return_value_1 (uiout, rv); | |
1566 | } | |
230d2906 | 1567 | catch (const gdb_exception &ex) |
243a9253 PA |
1568 | { |
1569 | exception_print (gdb_stdout, ex); | |
1570 | } | |
243a9253 PA |
1571 | } |
1572 | ||
1573 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1574 | |
46e3ed7f | 1575 | struct finish_command_fsm : public thread_fsm |
43ff13b4 | 1576 | { |
243a9253 PA |
1577 | /* The momentary breakpoint set at the function's return address in |
1578 | the caller. */ | |
46e3ed7f | 1579 | breakpoint_up breakpoint; |
243a9253 PA |
1580 | |
1581 | /* The function that we're stepping out of. */ | |
46e3ed7f | 1582 | struct symbol *function = nullptr; |
8a6c4031 | 1583 | |
243a9253 PA |
1584 | /* If the FSM finishes successfully, this stores the function's |
1585 | return value. */ | |
46e3ed7f | 1586 | struct return_value_info return_value_info {}; |
c5aa993b | 1587 | |
46e3ed7f TT |
1588 | explicit finish_command_fsm (struct interp *cmd_interp) |
1589 | : thread_fsm (cmd_interp) | |
1590 | { | |
1591 | } | |
243a9253 | 1592 | |
46e3ed7f TT |
1593 | bool should_stop (struct thread_info *thread) override; |
1594 | void clean_up (struct thread_info *thread) override; | |
1595 | struct return_value_info *return_value () override; | |
1596 | enum async_reply_reason do_async_reply_reason () override; | |
1597 | }; | |
347bddb7 | 1598 | |
243a9253 PA |
1599 | /* Implementation of the 'should_stop' FSM method for the finish |
1600 | commands. Detects whether the thread stepped out of the function | |
1601 | successfully, and if so, captures the function's return value and | |
1602 | marks the FSM finished. */ | |
1603 | ||
46e3ed7f TT |
1604 | bool |
1605 | finish_command_fsm::should_stop (struct thread_info *tp) | |
243a9253 | 1606 | { |
46e3ed7f | 1607 | struct return_value_info *rv = &return_value_info; |
243a9253 | 1608 | |
46e3ed7f | 1609 | if (function != NULL |
243a9253 | 1610 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f | 1611 | breakpoint.get ()) != NULL) |
43ff13b4 | 1612 | { |
243a9253 | 1613 | /* We're done. */ |
46e3ed7f | 1614 | set_finished (); |
bfec99b2 | 1615 | |
46e3ed7f | 1616 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); |
243a9253 PA |
1617 | if (rv->type == NULL) |
1618 | internal_error (__FILE__, __LINE__, | |
1619 | _("finish_command: function has no target type")); | |
f5871ec0 | 1620 | |
78134374 | 1621 | if (check_typedef (rv->type)->code () != TYPE_CODE_VOID) |
40c549d6 | 1622 | { |
243a9253 PA |
1623 | struct value *func; |
1624 | ||
46e3ed7f | 1625 | func = read_var_value (function, NULL, get_current_frame ()); |
0700e23e | 1626 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1627 | if (rv->value != NULL) |
1628 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1629 | } |
1630 | } | |
1631 | else if (tp->control.stop_step) | |
1632 | { | |
1633 | /* Finishing from an inline frame, or reverse finishing. In | |
1634 | either case, there's no way to retrieve the return value. */ | |
46e3ed7f | 1635 | set_finished (); |
243a9253 | 1636 | } |
fa4cd53f | 1637 | |
46e3ed7f | 1638 | return true; |
243a9253 | 1639 | } |
40c549d6 | 1640 | |
243a9253 PA |
1641 | /* Implementation of the 'clean_up' FSM method for the finish |
1642 | commands. */ | |
fa4cd53f | 1643 | |
46e3ed7f TT |
1644 | void |
1645 | finish_command_fsm::clean_up (struct thread_info *thread) | |
243a9253 | 1646 | { |
46e3ed7f | 1647 | breakpoint.reset (); |
8980e177 | 1648 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1649 | } |
f941662f | 1650 | |
243a9253 PA |
1651 | /* Implementation of the 'return_value' FSM method for the finish |
1652 | commands. */ | |
1653 | ||
46e3ed7f TT |
1654 | struct return_value_info * |
1655 | finish_command_fsm::return_value () | |
243a9253 | 1656 | { |
46e3ed7f | 1657 | return &return_value_info; |
43ff13b4 JM |
1658 | } |
1659 | ||
243a9253 PA |
1660 | /* Implementation of the 'async_reply_reason' FSM method for the |
1661 | finish commands. */ | |
1662 | ||
46e3ed7f TT |
1663 | enum async_reply_reason |
1664 | finish_command_fsm::do_async_reply_reason () | |
604ead4a | 1665 | { |
243a9253 PA |
1666 | if (execution_direction == EXEC_REVERSE) |
1667 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1668 | else | |
1669 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1670 | } |
1671 | ||
b2175913 MS |
1672 | /* finish_backward -- helper function for finish_command. */ |
1673 | ||
1674 | static void | |
243a9253 | 1675 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1676 | { |
1677 | struct symtab_and_line sal; | |
1678 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1679 | CORE_ADDR pc; |
b2175913 | 1680 | CORE_ADDR func_addr; |
b2175913 | 1681 | |
1c7819ef PA |
1682 | pc = get_frame_pc (get_current_frame ()); |
1683 | ||
1684 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1685 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1686 | |
1687 | sal = find_pc_line (func_addr, 0); | |
1688 | ||
9da8c2a0 | 1689 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1690 | /* Special case: if we're sitting at the function entry point, |
1691 | then all we need to do is take a reverse singlestep. We | |
1692 | don't need to set a breakpoint, and indeed it would do us | |
1693 | no good to do so. | |
1694 | ||
1695 | Note that this can only happen at frame #0, since there's | |
1696 | no way that a function up the stack can have a return address | |
1697 | that's equal to its entry point. */ | |
1698 | ||
1c7819ef | 1699 | if (sal.pc != pc) |
b2175913 | 1700 | { |
a6d9a66e UW |
1701 | struct frame_info *frame = get_selected_frame (NULL); |
1702 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1703 | |
1704 | /* Set a step-resume at the function's entry point. Once that's | |
1705 | hit, we'll do one more step backwards. */ | |
51abb421 | 1706 | symtab_and_line sr_sal; |
9da8c2a0 PA |
1707 | sr_sal.pc = sal.pc; |
1708 | sr_sal.pspace = get_frame_program_space (frame); | |
1709 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1710 | sr_sal, null_frame_id); | |
a6d9a66e | 1711 | |
64ce06e4 | 1712 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1713 | } |
1714 | else | |
b2175913 | 1715 | { |
9da8c2a0 PA |
1716 | /* We're almost there -- we just need to back up by one more |
1717 | single-step. */ | |
16c381f0 | 1718 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1719 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1720 | } |
b2175913 MS |
1721 | } |
1722 | ||
243a9253 PA |
1723 | /* finish_forward -- helper function for finish_command. FRAME is the |
1724 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1725 | |
1726 | static void | |
243a9253 | 1727 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1728 | { |
def166f6 | 1729 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1730 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1731 | struct symtab_and_line sal; |
1732 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1733 | |
1734 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1735 | sal.pc = get_frame_pc (frame); | |
1736 | ||
243a9253 PA |
1737 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1738 | get_stack_frame_id (frame), | |
46e3ed7f | 1739 | bp_finish); |
b2175913 | 1740 | |
c70a6932 JK |
1741 | /* set_momentary_breakpoint invalidates FRAME. */ |
1742 | frame = NULL; | |
1743 | ||
def166f6 | 1744 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1745 | |
46c03469 | 1746 | /* We want to print return value, please... */ |
16c381f0 | 1747 | tp->control.proceed_to_finish = 1; |
b2175913 | 1748 | |
243a9253 | 1749 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1750 | } |
1751 | ||
e3b5daf9 MM |
1752 | /* Skip frames for "finish". */ |
1753 | ||
1754 | static struct frame_info * | |
1755 | skip_finish_frames (struct frame_info *frame) | |
1756 | { | |
1757 | struct frame_info *start; | |
1758 | ||
1759 | do | |
1760 | { | |
1761 | start = frame; | |
1762 | ||
1763 | frame = skip_tailcall_frames (frame); | |
1764 | if (frame == NULL) | |
1765 | break; | |
1766 | ||
1767 | frame = skip_unwritable_frames (frame); | |
1768 | if (frame == NULL) | |
1769 | break; | |
1770 | } | |
1771 | while (start != frame); | |
1772 | ||
1773 | return frame; | |
1774 | } | |
1775 | ||
f941662f MK |
1776 | /* "finish": Set a temporary breakpoint at the place the selected |
1777 | frame will return to, then continue. */ | |
c906108c SS |
1778 | |
1779 | static void | |
0b39b52e | 1780 | finish_command (const char *arg, int from_tty) |
c906108c | 1781 | { |
52f0bd74 | 1782 | struct frame_info *frame; |
6c4486e6 | 1783 | int async_exec; |
243a9253 PA |
1784 | struct finish_command_fsm *sm; |
1785 | struct thread_info *tp; | |
43ff13b4 | 1786 | |
4247603b | 1787 | ERROR_NO_INFERIOR; |
573cda03 | 1788 | ensure_not_tfind_mode (); |
4247603b PA |
1789 | ensure_valid_thread (); |
1790 | ensure_not_running (); | |
573cda03 | 1791 | |
f941662f | 1792 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1793 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1794 | arg = stripped.get (); | |
43ff13b4 | 1795 | |
8b88a78e | 1796 | prepare_execution_command (current_top_target (), async_exec); |
c906108c SS |
1797 | |
1798 | if (arg) | |
8a3fe4f8 | 1799 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1800 | |
206415a3 | 1801 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1802 | if (frame == 0) |
8a3fe4f8 | 1803 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1804 | |
70509625 | 1805 | clear_proceed_status (0); |
c906108c | 1806 | |
243a9253 PA |
1807 | tp = inferior_thread (); |
1808 | ||
46e3ed7f | 1809 | sm = new finish_command_fsm (command_interp ()); |
243a9253 | 1810 | |
46e3ed7f | 1811 | tp->thread_fsm = sm; |
243a9253 | 1812 | |
edb3359d | 1813 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 1814 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
1815 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
1816 | == INLINE_FRAME) | |
1817 | { | |
1818 | /* Claim we are stepping in the calling frame. An empty step | |
1819 | range means that we will stop once we aren't in a function | |
1820 | called by that frame. We don't use the magic "1" value for | |
1821 | step_range_end, because then infrun will think this is nexti, | |
1822 | and not step over the rest of this inlined function call. */ | |
29734269 | 1823 | set_step_info (tp, frame, {}); |
16c381f0 JK |
1824 | tp->control.step_range_start = get_frame_pc (frame); |
1825 | tp->control.step_range_end = tp->control.step_range_start; | |
1826 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
1827 | |
1828 | /* Print info on the selected frame, including level number but not | |
1829 | source. */ | |
1830 | if (from_tty) | |
1831 | { | |
1832 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 1833 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
1834 | } |
1835 | ||
64ce06e4 | 1836 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
1837 | return; |
1838 | } | |
1839 | ||
c906108c SS |
1840 | /* Find the function we will return from. */ |
1841 | ||
243a9253 | 1842 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 1843 | |
f941662f MK |
1844 | /* Print info on the selected frame, including level number but not |
1845 | source. */ | |
c906108c SS |
1846 | if (from_tty) |
1847 | { | |
b2175913 MS |
1848 | if (execution_direction == EXEC_REVERSE) |
1849 | printf_filtered (_("Run back to call of ")); | |
1850 | else | |
743649fd | 1851 | { |
243a9253 | 1852 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
1853 | && !query (_("warning: Function %s does not return normally.\n" |
1854 | "Try to finish anyway? "), | |
987012b8 | 1855 | sm->function->print_name ())) |
743649fd MW |
1856 | error (_("Not confirmed.")); |
1857 | printf_filtered (_("Run till exit from ")); | |
1858 | } | |
b2175913 | 1859 | |
08d72866 | 1860 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
1861 | } |
1862 | ||
b2175913 | 1863 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 1864 | finish_backward (sm); |
b2175913 | 1865 | else |
33b4777c | 1866 | { |
e3b5daf9 | 1867 | frame = skip_finish_frames (frame); |
7eb89530 | 1868 | |
33b4777c MM |
1869 | if (frame == NULL) |
1870 | error (_("Cannot find the caller frame.")); | |
1871 | ||
1872 | finish_forward (sm, frame); | |
1873 | } | |
c906108c SS |
1874 | } |
1875 | \f | |
f941662f | 1876 | |
c906108c | 1877 | static void |
1d12d88f | 1878 | info_program_command (const char *args, int from_tty) |
c906108c | 1879 | { |
347bddb7 PA |
1880 | bpstat bs; |
1881 | int num, stat; | |
347bddb7 | 1882 | ptid_t ptid; |
5b6d1e4f | 1883 | process_stratum_target *proc_target; |
c5aa993b | 1884 | |
c906108c SS |
1885 | if (!target_has_execution) |
1886 | { | |
a3f17187 | 1887 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
1888 | return; |
1889 | } | |
1890 | ||
347bddb7 | 1891 | if (non_stop) |
5b6d1e4f PA |
1892 | { |
1893 | ptid = inferior_ptid; | |
1894 | proc_target = current_inferior ()->process_target (); | |
1895 | } | |
347bddb7 | 1896 | else |
5b6d1e4f | 1897 | get_last_target_status (&proc_target, &ptid, nullptr); |
347bddb7 | 1898 | |
9e7f3bbb | 1899 | if (ptid == null_ptid || ptid == minus_one_ptid) |
00431a78 PA |
1900 | error (_("No selected thread.")); |
1901 | ||
5b6d1e4f | 1902 | thread_info *tp = find_thread_ptid (proc_target, ptid); |
00431a78 PA |
1903 | |
1904 | if (tp->state == THREAD_EXITED) | |
347bddb7 | 1905 | error (_("Invalid selected thread.")); |
00431a78 | 1906 | else if (tp->state == THREAD_RUNNING) |
347bddb7 PA |
1907 | error (_("Selected thread is running.")); |
1908 | ||
16c381f0 | 1909 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
1910 | stat = bpstat_num (&bs, &num); |
1911 | ||
c906108c | 1912 | target_files_info (); |
5af949e3 | 1913 | printf_filtered (_("Program stopped at %s.\n"), |
f2ffa92b | 1914 | paddress (target_gdbarch (), tp->suspend.stop_pc)); |
16c381f0 | 1915 | if (tp->control.stop_step) |
a3f17187 | 1916 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 1917 | else if (stat != 0) |
c906108c SS |
1918 | { |
1919 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 1920 | isn't as strange as it seems. */ |
8671a17b | 1921 | while (stat != 0) |
c906108c | 1922 | { |
8671a17b | 1923 | if (stat < 0) |
c906108c | 1924 | { |
3e43a32a MS |
1925 | printf_filtered (_("It stopped at a breakpoint " |
1926 | "that has since been deleted.\n")); | |
c906108c SS |
1927 | } |
1928 | else | |
a3f17187 | 1929 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 1930 | stat = bpstat_num (&bs, &num); |
c906108c SS |
1931 | } |
1932 | } | |
a493e3e2 | 1933 | else if (tp->suspend.stop_signal != GDB_SIGNAL_0) |
c906108c | 1934 | { |
a3f17187 | 1935 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
2ea28649 PA |
1936 | gdb_signal_to_name (tp->suspend.stop_signal), |
1937 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
c906108c SS |
1938 | } |
1939 | ||
0d41ba00 | 1940 | if (from_tty) |
c906108c | 1941 | { |
3e43a32a MS |
1942 | printf_filtered (_("Type \"info stack\" or \"info " |
1943 | "registers\" for more information.\n")); | |
c906108c SS |
1944 | } |
1945 | } | |
1946 | \f | |
1947 | static void | |
69f476a3 | 1948 | environment_info (const char *var, int from_tty) |
c906108c SS |
1949 | { |
1950 | if (var) | |
1951 | { | |
9a6c7d9c | 1952 | const char *val = current_inferior ()->environment.get (var); |
abbb1732 | 1953 | |
c906108c SS |
1954 | if (val) |
1955 | { | |
1956 | puts_filtered (var); | |
1957 | puts_filtered (" = "); | |
1958 | puts_filtered (val); | |
1959 | puts_filtered ("\n"); | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | puts_filtered ("Environment variable \""); | |
1964 | puts_filtered (var); | |
1965 | puts_filtered ("\" not defined.\n"); | |
1966 | } | |
1967 | } | |
1968 | else | |
1969 | { | |
9a6c7d9c | 1970 | char **envp = current_inferior ()->environment.envp (); |
abbb1732 | 1971 | |
9a6c7d9c | 1972 | for (int idx = 0; envp[idx] != NULL; ++idx) |
c906108c | 1973 | { |
9a6c7d9c | 1974 | puts_filtered (envp[idx]); |
c906108c SS |
1975 | puts_filtered ("\n"); |
1976 | } | |
1977 | } | |
1978 | } | |
1979 | ||
1980 | static void | |
69f476a3 | 1981 | set_environment_command (const char *arg, int from_tty) |
c906108c | 1982 | { |
69f476a3 | 1983 | const char *p, *val; |
c906108c SS |
1984 | int nullset = 0; |
1985 | ||
1986 | if (arg == 0) | |
e2e0b3e5 | 1987 | error_no_arg (_("environment variable and value")); |
c906108c | 1988 | |
85102364 | 1989 | /* Find separation between variable name and value. */ |
c906108c SS |
1990 | p = (char *) strchr (arg, '='); |
1991 | val = (char *) strchr (arg, ' '); | |
1992 | ||
1993 | if (p != 0 && val != 0) | |
1994 | { | |
1995 | /* We have both a space and an equals. If the space is before the | |
c5aa993b | 1996 | equals, walk forward over the spaces til we see a nonspace |
1777feb0 | 1997 | (possibly the equals). */ |
c906108c SS |
1998 | if (p > val) |
1999 | while (*val == ' ') | |
2000 | val++; | |
2001 | ||
2002 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 2003 | take the char following the spaces. */ |
c906108c SS |
2004 | if (p > val) |
2005 | p = val - 1; | |
2006 | } | |
2007 | else if (val != 0 && p == 0) | |
2008 | p = val; | |
2009 | ||
2010 | if (p == arg) | |
e2e0b3e5 | 2011 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2012 | |
2013 | if (p == 0 || p[1] == 0) | |
2014 | { | |
2015 | nullset = 1; | |
2016 | if (p == 0) | |
1777feb0 | 2017 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2018 | } |
2019 | else | |
2020 | { | |
1777feb0 | 2021 | /* Not setting variable value to null. */ |
c906108c SS |
2022 | val = p + 1; |
2023 | while (*val == ' ' || *val == '\t') | |
2024 | val++; | |
2025 | } | |
2026 | ||
c5aa993b JM |
2027 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2028 | p--; | |
c906108c | 2029 | |
69f476a3 | 2030 | std::string var (arg, p - arg); |
c906108c SS |
2031 | if (nullset) |
2032 | { | |
3e43a32a MS |
2033 | printf_filtered (_("Setting environment variable " |
2034 | "\"%s\" to null value.\n"), | |
69f476a3 TT |
2035 | var.c_str ()); |
2036 | current_inferior ()->environment.set (var.c_str (), ""); | |
c906108c SS |
2037 | } |
2038 | else | |
69f476a3 | 2039 | current_inferior ()->environment.set (var.c_str (), val); |
c906108c SS |
2040 | } |
2041 | ||
2042 | static void | |
69f476a3 | 2043 | unset_environment_command (const char *var, int from_tty) |
c906108c SS |
2044 | { |
2045 | if (var == 0) | |
2046 | { | |
2047 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 2048 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2049 | if (!from_tty || query (_("Delete all environment variables? "))) |
206726fb | 2050 | current_inferior ()->environment.clear (); |
c906108c SS |
2051 | } |
2052 | else | |
9a6c7d9c | 2053 | current_inferior ()->environment.unset (var); |
c906108c SS |
2054 | } |
2055 | ||
1777feb0 | 2056 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2057 | |
2058 | static const char path_var_name[] = "PATH"; | |
2059 | ||
c906108c | 2060 | static void |
69f476a3 | 2061 | path_info (const char *args, int from_tty) |
c906108c SS |
2062 | { |
2063 | puts_filtered ("Executable and object file path: "); | |
9a6c7d9c | 2064 | puts_filtered (current_inferior ()->environment.get (path_var_name)); |
c906108c SS |
2065 | puts_filtered ("\n"); |
2066 | } | |
2067 | ||
2068 | /* Add zero or more directories to the front of the execution path. */ | |
2069 | ||
2070 | static void | |
0b39b52e | 2071 | path_command (const char *dirname, int from_tty) |
c906108c SS |
2072 | { |
2073 | char *exec_path; | |
a121b7c1 | 2074 | const char *env; |
abbb1732 | 2075 | |
c906108c | 2076 | dont_repeat (); |
9a6c7d9c | 2077 | env = current_inferior ()->environment.get (path_var_name); |
1777feb0 | 2078 | /* Can be null if path is not set. */ |
c906108c SS |
2079 | if (!env) |
2080 | env = ""; | |
4fcf66da | 2081 | exec_path = xstrdup (env); |
c906108c | 2082 | mod_path (dirname, &exec_path); |
9a6c7d9c | 2083 | current_inferior ()->environment.set (path_var_name, exec_path); |
b8c9b27d | 2084 | xfree (exec_path); |
c906108c | 2085 | if (from_tty) |
cafb3438 | 2086 | path_info (NULL, from_tty); |
c906108c | 2087 | } |
c906108c | 2088 | \f |
c5aa993b | 2089 | |
e813d34a RK |
2090 | static void |
2091 | pad_to_column (string_file &stream, int col) | |
2092 | { | |
2093 | /* At least one space must be printed to separate columns. */ | |
2094 | stream.putc (' '); | |
2095 | const int size = stream.size (); | |
2096 | if (size < col) | |
2097 | stream.puts (n_spaces (col - size)); | |
2098 | } | |
2099 | ||
1292279a PA |
2100 | /* Print out the register NAME with value VAL, to FILE, in the default |
2101 | fashion. */ | |
2102 | ||
2103 | static void | |
2104 | default_print_one_register_info (struct ui_file *file, | |
2105 | const char *name, | |
2106 | struct value *val) | |
2107 | { | |
2108 | struct type *regtype = value_type (val); | |
f69d9aef | 2109 | int print_raw_format; |
e813d34a RK |
2110 | string_file format_stream; |
2111 | enum tab_stops | |
2112 | { | |
2113 | value_column_1 = 15, | |
2114 | /* Give enough room for "0x", 16 hex digits and two spaces in | |
2115 | preceding column. */ | |
2116 | value_column_2 = value_column_1 + 2 + 16 + 2, | |
2117 | }; | |
1292279a | 2118 | |
e813d34a RK |
2119 | format_stream.puts (name); |
2120 | pad_to_column (format_stream, value_column_1); | |
1292279a | 2121 | |
f69d9aef AB |
2122 | print_raw_format = (value_entirely_available (val) |
2123 | && !value_optimized_out (val)); | |
1292279a PA |
2124 | |
2125 | /* If virtual format is floating, print it that way, and in raw | |
2126 | hex. */ | |
78134374 SM |
2127 | if (regtype->code () == TYPE_CODE_FLT |
2128 | || regtype->code () == TYPE_CODE_DECFLOAT) | |
1292279a | 2129 | { |
1292279a PA |
2130 | struct value_print_options opts; |
2131 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
34877895 | 2132 | enum bfd_endian byte_order = type_byte_order (regtype); |
1292279a PA |
2133 | |
2134 | get_user_print_options (&opts); | |
2135 | opts.deref_ref = 1; | |
2136 | ||
3444c526 | 2137 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a | 2138 | |
f69d9aef AB |
2139 | if (print_raw_format) |
2140 | { | |
e813d34a RK |
2141 | pad_to_column (format_stream, value_column_2); |
2142 | format_stream.puts ("(raw "); | |
2143 | print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype), | |
2144 | byte_order, true); | |
2145 | format_stream.putc (')'); | |
f69d9aef | 2146 | } |
1292279a PA |
2147 | } |
2148 | else | |
2149 | { | |
2150 | struct value_print_options opts; | |
2151 | ||
2152 | /* Print the register in hex. */ | |
2153 | get_formatted_print_options (&opts, 'x'); | |
2154 | opts.deref_ref = 1; | |
3444c526 | 2155 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2156 | /* If not a vector register, print it also according to its |
2157 | natural format. */ | |
f69d9aef | 2158 | if (print_raw_format && TYPE_VECTOR (regtype) == 0) |
1292279a | 2159 | { |
e813d34a | 2160 | pad_to_column (format_stream, value_column_2); |
1292279a PA |
2161 | get_user_print_options (&opts); |
2162 | opts.deref_ref = 1; | |
3444c526 | 2163 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2164 | } |
2165 | } | |
2166 | ||
e813d34a | 2167 | fputs_filtered (format_stream.c_str (), file); |
1292279a PA |
2168 | fprintf_filtered (file, "\n"); |
2169 | } | |
2170 | ||
1777feb0 | 2171 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2172 | registers (print_all == 1) or all non-float and non-vector |
2173 | registers (print_all == 0). | |
c906108c SS |
2174 | |
2175 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2176 | register(s) one per line is good enough. If a different format is |
2177 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2178 | regs), or there is an existing convention for showing all the | |
2179 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2180 | provide that format. */ | |
c906108c | 2181 | |
666e11c5 | 2182 | void |
0ab7a791 AC |
2183 | default_print_registers_info (struct gdbarch *gdbarch, |
2184 | struct ui_file *file, | |
2185 | struct frame_info *frame, | |
2186 | int regnum, int print_all) | |
c906108c | 2187 | { |
0ab7a791 | 2188 | int i; |
f6efe3f8 | 2189 | const int numregs = gdbarch_num_cooked_regs (gdbarch); |
0ab7a791 | 2190 | |
c906108c SS |
2191 | for (i = 0; i < numregs; i++) |
2192 | { | |
4782dc19 AC |
2193 | /* Decide between printing all regs, non-float / vector regs, or |
2194 | specific reg. */ | |
c5aa993b JM |
2195 | if (regnum == -1) |
2196 | { | |
f9418c0f | 2197 | if (print_all) |
4782dc19 | 2198 | { |
f9418c0f | 2199 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2200 | continue; |
f9418c0f AC |
2201 | } |
2202 | else | |
2203 | { | |
2204 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2205 | continue; |
2206 | } | |
c5aa993b JM |
2207 | } |
2208 | else | |
2209 | { | |
2210 | if (i != regnum) | |
2211 | continue; | |
2212 | } | |
c906108c SS |
2213 | |
2214 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 2215 | processor, so don't display anything. */ |
a4bd449d UW |
2216 | if (gdbarch_register_name (gdbarch, i) == NULL |
2217 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2218 | continue; |
2219 | ||
1292279a PA |
2220 | default_print_one_register_info (file, |
2221 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2222 | value_of_register (i, frame)); |
c906108c SS |
2223 | } |
2224 | } | |
c906108c | 2225 | |
c906108c | 2226 | void |
1d12d88f | 2227 | registers_info (const char *addr_exp, int fpregs) |
c906108c | 2228 | { |
206415a3 | 2229 | struct frame_info *frame; |
a4bd449d | 2230 | struct gdbarch *gdbarch; |
c906108c SS |
2231 | |
2232 | if (!target_has_registers) | |
8a3fe4f8 | 2233 | error (_("The program has no registers now.")); |
206415a3 | 2234 | frame = get_selected_frame (NULL); |
a4bd449d | 2235 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2236 | |
2237 | if (!addr_exp) | |
2238 | { | |
a4bd449d | 2239 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2240 | frame, -1, fpregs); |
c906108c SS |
2241 | return; |
2242 | } | |
2243 | ||
f9418c0f | 2244 | while (*addr_exp != '\0') |
c5aa993b | 2245 | { |
1d12d88f | 2246 | const char *start; |
f9418c0f | 2247 | const char *end; |
c906108c | 2248 | |
529480d0 KS |
2249 | /* Skip leading white space. */ |
2250 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2251 | |
f9418c0f AC |
2252 | /* Discard any leading ``$''. Check that there is something |
2253 | resembling a register following it. */ | |
2254 | if (addr_exp[0] == '$') | |
2255 | addr_exp++; | |
2256 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2257 | error (_("Missing register name")); |
c906108c | 2258 | |
f9418c0f AC |
2259 | /* Find the start/end of this register name/num/group. */ |
2260 | start = addr_exp; | |
2261 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2262 | addr_exp++; | |
2263 | end = addr_exp; | |
ad842144 | 2264 | |
f9418c0f AC |
2265 | /* Figure out what we've found and display it. */ |
2266 | ||
2267 | /* A register name? */ | |
2268 | { | |
029a67e4 | 2269 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2270 | |
f9418c0f AC |
2271 | if (regnum >= 0) |
2272 | { | |
ad842144 MR |
2273 | /* User registers lie completely outside of the range of |
2274 | normal registers. Catch them early so that the target | |
2275 | never sees them. */ | |
f6efe3f8 | 2276 | if (regnum >= gdbarch_num_cooked_regs (gdbarch)) |
ad842144 | 2277 | { |
1292279a PA |
2278 | struct value *regval = value_of_user_reg (regnum, frame); |
2279 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2280 | regnum); | |
2281 | ||
2282 | /* Print in the same fashion | |
2283 | gdbarch_print_registers_info's default | |
2284 | implementation prints. */ | |
2285 | default_print_one_register_info (gdb_stdout, | |
2286 | regname, | |
2287 | regval); | |
ad842144 MR |
2288 | } |
2289 | else | |
2290 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2291 | frame, regnum, fpregs); | |
f9418c0f AC |
2292 | continue; |
2293 | } | |
2294 | } | |
ad842144 | 2295 | |
f9418c0f AC |
2296 | /* A register group? */ |
2297 | { | |
6c7d17ba | 2298 | struct reggroup *group; |
abbb1732 | 2299 | |
a4bd449d | 2300 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2301 | group != NULL; |
a4bd449d | 2302 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2303 | { |
2304 | /* Don't bother with a length check. Should the user | |
2305 | enter a short register group name, go with the first | |
2306 | group that matches. */ | |
6c7d17ba | 2307 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2308 | break; |
2309 | } | |
6c7d17ba | 2310 | if (group != NULL) |
f9418c0f AC |
2311 | { |
2312 | int regnum; | |
abbb1732 | 2313 | |
f57d151a | 2314 | for (regnum = 0; |
f6efe3f8 | 2315 | regnum < gdbarch_num_cooked_regs (gdbarch); |
f57d151a | 2316 | regnum++) |
f9418c0f | 2317 | { |
a4bd449d UW |
2318 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2319 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2320 | gdb_stdout, frame, |
f9418c0f AC |
2321 | regnum, fpregs); |
2322 | } | |
2323 | continue; | |
2324 | } | |
2325 | } | |
c906108c | 2326 | |
f9418c0f | 2327 | /* Nothing matched. */ |
8a3fe4f8 | 2328 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2329 | } |
c906108c SS |
2330 | } |
2331 | ||
1dd5fedc | 2332 | static void |
1d12d88f | 2333 | info_all_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2334 | { |
2335 | registers_info (addr_exp, 1); | |
2336 | } | |
2337 | ||
a58dd373 | 2338 | static void |
1d12d88f | 2339 | info_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2340 | { |
2341 | registers_info (addr_exp, 0); | |
2342 | } | |
e76f1f2e AC |
2343 | |
2344 | static void | |
d80b854b | 2345 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2346 | struct frame_info *frame, const char *args) |
2347 | { | |
d80b854b UW |
2348 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2349 | ||
e76f1f2e AC |
2350 | if (gdbarch_print_vector_info_p (gdbarch)) |
2351 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2352 | else | |
2353 | { | |
2354 | int regnum; | |
2355 | int printed_something = 0; | |
ab4327e0 | 2356 | |
f6efe3f8 | 2357 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
e76f1f2e | 2358 | { |
f9418c0f | 2359 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2360 | { |
2361 | printed_something = 1; | |
e76f1f2e | 2362 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2363 | } |
2364 | } | |
2365 | if (!printed_something) | |
2366 | fprintf_filtered (file, "No vector information\n"); | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | static void | |
1d12d88f | 2371 | info_vector_command (const char *args, int from_tty) |
e76f1f2e | 2372 | { |
206415a3 DJ |
2373 | if (!target_has_registers) |
2374 | error (_("The program has no registers now.")); | |
2375 | ||
d80b854b | 2376 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2377 | } |
c906108c | 2378 | \f |
5fd62852 PA |
2379 | /* Kill the inferior process. Make us have no inferior. */ |
2380 | ||
2381 | static void | |
981a3fb3 | 2382 | kill_command (const char *arg, int from_tty) |
5fd62852 PA |
2383 | { |
2384 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2385 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2386 | some targets don't have processes! */ |
5fd62852 | 2387 | |
d7e15655 | 2388 | if (inferior_ptid == null_ptid) |
5fd62852 PA |
2389 | error (_("The program is not being run.")); |
2390 | if (!query (_("Kill the program being debugged? "))) | |
2391 | error (_("Not confirmed.")); | |
f67c0c91 | 2392 | |
249b5733 PA |
2393 | int pid = current_inferior ()->pid; |
2394 | /* Save the pid as a string before killing the inferior, since that | |
2395 | may unpush the current target, and we need the string after. */ | |
f2907e49 | 2396 | std::string pid_str = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
2397 | int infnum = current_inferior ()->num; |
2398 | ||
5fd62852 PA |
2399 | target_kill (); |
2400 | ||
f67c0c91 | 2401 | if (print_inferior_events) |
249b5733 | 2402 | printf_unfiltered (_("[Inferior %d (%s) killed]\n"), |
f67c0c91 SDJ |
2403 | infnum, pid_str.c_str ()); |
2404 | ||
5fd62852 PA |
2405 | bfd_cache_close_all (); |
2406 | } | |
c5aa993b | 2407 | |
08036331 | 2408 | /* Used in `attach&' command. Proceed threads of inferior INF iff |
74531fed | 2409 | they stopped due to debugger request, and when they did, they |
08036331 PA |
2410 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that |
2411 | have been explicitly been told to stop. */ | |
74531fed PA |
2412 | |
2413 | static void | |
08036331 | 2414 | proceed_after_attach (inferior *inf) |
74531fed PA |
2415 | { |
2416 | /* Don't error out if the current thread is running, because | |
2417 | there may be other stopped threads. */ | |
74531fed PA |
2418 | |
2419 | /* Backup current thread and selected frame. */ | |
5ed8105e | 2420 | scoped_restore_current_thread restore_thread; |
74531fed | 2421 | |
08036331 PA |
2422 | for (thread_info *thread : inf->non_exited_threads ()) |
2423 | if (!thread->executing | |
2424 | && !thread->stop_requested | |
2425 | && thread->suspend.stop_signal == GDB_SIGNAL_0) | |
2426 | { | |
2427 | switch_to_thread (thread); | |
2428 | clear_proceed_status (0); | |
2429 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
2430 | } | |
74531fed PA |
2431 | } |
2432 | ||
6efcd9a8 | 2433 | /* See inferior.h. */ |
c906108c | 2434 | |
6efcd9a8 PA |
2435 | void |
2436 | setup_inferior (int from_tty) | |
9356cf8d | 2437 | { |
d6b48e9c | 2438 | struct inferior *inferior; |
9356cf8d | 2439 | |
d6b48e9c | 2440 | inferior = current_inferior (); |
6efcd9a8 | 2441 | inferior->needs_setup = 0; |
9356cf8d PA |
2442 | |
2443 | /* If no exec file is yet known, try to determine it from the | |
2444 | process itself. */ | |
a10de604 | 2445 | if (get_exec_file (0) == NULL) |
e99b03dc | 2446 | exec_file_locate_attach (inferior_ptid.pid (), 1, from_tty); |
9356cf8d PA |
2447 | else |
2448 | { | |
2449 | reopen_exec_file (); | |
2450 | reread_symbols (); | |
2451 | } | |
2452 | ||
2453 | /* Take any necessary post-attaching actions for this platform. */ | |
e99b03dc | 2454 | target_post_attach (inferior_ptid.pid ()); |
9356cf8d | 2455 | |
8b88a78e | 2456 | post_create_inferior (current_top_target (), from_tty); |
6efcd9a8 PA |
2457 | } |
2458 | ||
2459 | /* What to do after the first program stops after attaching. */ | |
2460 | enum attach_post_wait_mode | |
2461 | { | |
2462 | /* Do nothing. Leaves threads as they are. */ | |
2463 | ATTACH_POST_WAIT_NOTHING, | |
2464 | ||
2465 | /* Re-resume threads that are marked running. */ | |
2466 | ATTACH_POST_WAIT_RESUME, | |
2467 | ||
2468 | /* Stop all threads. */ | |
2469 | ATTACH_POST_WAIT_STOP, | |
2470 | }; | |
2471 | ||
2472 | /* Called after we've attached to a process and we've seen it stop for | |
2473 | the first time. If ASYNC_EXEC is true, re-resume threads that | |
2474 | should be running. Else if ATTACH, */ | |
2475 | ||
2476 | static void | |
a121b7c1 | 2477 | attach_post_wait (const char *args, int from_tty, enum attach_post_wait_mode mode) |
6efcd9a8 PA |
2478 | { |
2479 | struct inferior *inferior; | |
9356cf8d | 2480 | |
6efcd9a8 PA |
2481 | inferior = current_inferior (); |
2482 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2483 | ||
2484 | if (inferior->needs_setup) | |
2485 | setup_inferior (from_tty); | |
2486 | ||
2487 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2488 | { |
2489 | /* The user requested an `attach&', so be sure to leave threads | |
2490 | that didn't get a signal running. */ | |
2491 | ||
2492 | /* Immediatelly resume all suspended threads of this inferior, | |
2493 | and this inferior only. This should have no effect on | |
2494 | already running threads. If a thread has been stopped with a | |
2495 | signal, leave it be. */ | |
2496 | if (non_stop) | |
08036331 | 2497 | proceed_after_attach (inferior); |
74531fed PA |
2498 | else |
2499 | { | |
a493e3e2 | 2500 | if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed | 2501 | { |
70509625 | 2502 | clear_proceed_status (0); |
64ce06e4 | 2503 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2504 | } |
2505 | } | |
2506 | } | |
6efcd9a8 | 2507 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2508 | { |
74531fed PA |
2509 | /* The user requested a plain `attach', so be sure to leave |
2510 | the inferior stopped. */ | |
2511 | ||
74531fed PA |
2512 | /* At least the current thread is already stopped. */ |
2513 | ||
2514 | /* In all-stop, by definition, all threads have to be already | |
2515 | stopped at this point. In non-stop, however, although the | |
2516 | selected thread is stopped, others may still be executing. | |
2517 | Be sure to explicitly stop all threads of the process. This | |
2518 | should have no effect on already stopped threads. */ | |
066f6b6e | 2519 | if (non_stop) |
f2907e49 | 2520 | target_stop (ptid_t (inferior->pid)); |
066f6b6e PA |
2521 | else if (target_is_non_stop_p ()) |
2522 | { | |
066f6b6e | 2523 | struct thread_info *lowest = inferior_thread (); |
066f6b6e PA |
2524 | |
2525 | stop_all_threads (); | |
2526 | ||
2527 | /* It's not defined which thread will report the attach | |
2528 | stop. For consistency, always select the thread with | |
2529 | lowest GDB number, which should be the main thread, if it | |
2530 | still exists. */ | |
08036331 PA |
2531 | for (thread_info *thread : current_inferior ()->non_exited_threads ()) |
2532 | if (thread->inf->num < lowest->inf->num | |
2533 | || thread->per_inf_num < lowest->per_inf_num) | |
2534 | lowest = thread; | |
066f6b6e | 2535 | |
00431a78 | 2536 | switch_to_thread (lowest); |
066f6b6e | 2537 | } |
74531fed PA |
2538 | |
2539 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2540 | normal_stop (); |
2541 | if (deprecated_attach_hook) | |
2542 | deprecated_attach_hook (); | |
2543 | } | |
2544 | } | |
2545 | ||
bfec99b2 | 2546 | struct attach_command_continuation_args |
9356cf8d PA |
2547 | { |
2548 | char *args; | |
2549 | int from_tty; | |
6efcd9a8 | 2550 | enum attach_post_wait_mode mode; |
bfec99b2 | 2551 | }; |
9356cf8d | 2552 | |
bfec99b2 | 2553 | static void |
fa4cd53f | 2554 | attach_command_continuation (void *args, int err) |
bfec99b2 | 2555 | { |
9a3c8263 SM |
2556 | struct attach_command_continuation_args *a |
2557 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2558 | |
fa4cd53f PA |
2559 | if (err) |
2560 | return; | |
2561 | ||
6efcd9a8 | 2562 | attach_post_wait (a->args, a->from_tty, a->mode); |
9356cf8d PA |
2563 | } |
2564 | ||
604ead4a PA |
2565 | static void |
2566 | attach_command_continuation_free_args (void *args) | |
2567 | { | |
9a3c8263 SM |
2568 | struct attach_command_continuation_args *a |
2569 | = (struct attach_command_continuation_args *) args; | |
abbb1732 | 2570 | |
604ead4a PA |
2571 | xfree (a->args); |
2572 | xfree (a); | |
2573 | } | |
2574 | ||
6efcd9a8 PA |
2575 | /* "attach" command entry point. Takes a program started up outside |
2576 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2577 | and allows us to start debugging it. */ | |
2578 | ||
c906108c | 2579 | void |
0b39b52e | 2580 | attach_command (const char *args, int from_tty) |
c906108c | 2581 | { |
6c4486e6 | 2582 | int async_exec; |
b3ccfe11 | 2583 | struct target_ops *attach_target; |
6efcd9a8 PA |
2584 | struct inferior *inferior = current_inferior (); |
2585 | enum attach_post_wait_mode mode; | |
c906108c | 2586 | |
c5aa993b | 2587 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2588 | |
f5656ead | 2589 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2590 | /* Don't complain if all processes share the same symbol |
2591 | space. */ | |
8a305172 PA |
2592 | ; |
2593 | else if (target_has_execution) | |
c906108c | 2594 | { |
9e2f0ad4 | 2595 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2596 | target_kill (); |
2597 | else | |
8a3fe4f8 | 2598 | error (_("Not killed.")); |
c906108c SS |
2599 | } |
2600 | ||
fd79ecee DJ |
2601 | /* Clean up any leftovers from other runs. Some other things from |
2602 | this function should probably be moved into target_pre_inferior. */ | |
2603 | target_pre_inferior (from_tty); | |
2604 | ||
6be9a197 TT |
2605 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
2606 | args = stripped.get (); | |
8bc2fe48 | 2607 | |
b3ccfe11 TT |
2608 | attach_target = find_attach_target (); |
2609 | ||
8bc2fe48 PA |
2610 | prepare_execution_command (attach_target, async_exec); |
2611 | ||
f6ac5f3d | 2612 | if (non_stop && !attach_target->supports_non_stop ()) |
9908b566 VP |
2613 | error (_("Cannot attach to this target in non-stop mode")); |
2614 | ||
f6ac5f3d | 2615 | attach_target->attach (args, from_tty); |
b3ccfe11 TT |
2616 | /* to_attach should push the target, so after this point we |
2617 | shouldn't refer to attach_target again. */ | |
2618 | attach_target = NULL; | |
c906108c SS |
2619 | |
2620 | /* Set up the "saved terminal modes" of the inferior | |
2621 | based on what modes we are starting it with. */ | |
223ffa71 | 2622 | target_terminal::init (); |
c906108c | 2623 | |
7180e04a PA |
2624 | /* Install inferior's terminal modes. This may look like a no-op, |
2625 | as we've just saved them above, however, this does more than | |
2626 | restore terminal settings: | |
2627 | ||
2628 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2629 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2630 | stop would end up as a spurious Quit. | |
2631 | ||
2632 | - removes stdin from the event loop, which we need if attaching | |
2633 | in the foreground, otherwise on targets that report an initial | |
2634 | stop on attach (which are most) we'd process input/commands | |
2635 | while we're in the event loop waiting for that stop. That is, | |
2636 | before the attach continuation runs and the command is really | |
2637 | finished. */ | |
223ffa71 | 2638 | target_terminal::inferior (); |
7180e04a | 2639 | |
c906108c SS |
2640 | /* Set up execution context to know that we should return from |
2641 | wait_for_inferior as soon as the target reports a stop. */ | |
2642 | init_wait_for_inferior (); | |
70509625 | 2643 | clear_proceed_status (0); |
c906108c | 2644 | |
6efcd9a8 PA |
2645 | inferior->needs_setup = 1; |
2646 | ||
fbea99ea | 2647 | if (target_is_non_stop_p ()) |
74531fed PA |
2648 | { |
2649 | /* If we find that the current thread isn't stopped, explicitly | |
2650 | do so now, because we're going to install breakpoints and | |
2651 | poke at memory. */ | |
2652 | ||
2653 | if (async_exec) | |
2654 | /* The user requested an `attach&'; stop just one thread. */ | |
2655 | target_stop (inferior_ptid); | |
2656 | else | |
2657 | /* The user requested an `attach', so stop all threads of this | |
2658 | inferior. */ | |
e99b03dc | 2659 | target_stop (ptid_t (inferior_ptid.pid ())); |
74531fed PA |
2660 | } |
2661 | ||
a2fedca9 PW |
2662 | /* Check for exec file mismatch, and let the user solve it. */ |
2663 | validate_exec_file (from_tty); | |
2664 | ||
6efcd9a8 PA |
2665 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2666 | ||
dc177b7a PA |
2667 | /* Some system don't generate traps when attaching to inferior. |
2668 | E.g. Mach 3 or GNU hurd. */ | |
f6ac5f3d | 2669 | if (!target_attach_no_wait ()) |
c5aa993b | 2670 | { |
0b333c5e | 2671 | struct attach_command_continuation_args *a; |
d6b48e9c | 2672 | |
1777feb0 | 2673 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2674 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2675 | need a way for handle_inferior_event to reset the stop_signal | |
2676 | variable after an attach, and this is what | |
2677 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2678 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2679 | |
3b12939d | 2680 | /* Wait for stop. */ |
0b333c5e PA |
2681 | a = XNEW (struct attach_command_continuation_args); |
2682 | a->args = xstrdup (args); | |
2683 | a->from_tty = from_tty; | |
6efcd9a8 | 2684 | a->mode = mode; |
0b333c5e PA |
2685 | add_inferior_continuation (attach_command_continuation, a, |
2686 | attach_command_continuation_free_args); | |
0b333c5e | 2687 | |
5b6d1e4f PA |
2688 | /* Let infrun consider waiting for events out of this |
2689 | target. */ | |
2690 | inferior->process_target ()->threads_executing = true; | |
2691 | ||
0b333c5e PA |
2692 | if (!target_is_async_p ()) |
2693 | mark_infrun_async_event_handler (); | |
2694 | return; | |
dc177b7a | 2695 | } |
5b6d1e4f PA |
2696 | else |
2697 | attach_post_wait (args, from_tty, mode); | |
c906108c SS |
2698 | } |
2699 | ||
1941c569 PA |
2700 | /* We had just found out that the target was already attached to an |
2701 | inferior. PTID points at a thread of this new inferior, that is | |
2702 | the most likely to be stopped right now, but not necessarily so. | |
2703 | The new inferior is assumed to be already added to the inferior | |
2704 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2705 | this inferior running, except those we've explicitly seen reported | |
2706 | as stopped. */ | |
2707 | ||
2708 | void | |
00431a78 | 2709 | notice_new_inferior (thread_info *thr, int leave_running, int from_tty) |
1941c569 | 2710 | { |
5ed8105e PA |
2711 | enum attach_post_wait_mode mode |
2712 | = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; | |
1941c569 | 2713 | |
5ed8105e | 2714 | gdb::optional<scoped_restore_current_thread> restore_thread; |
1941c569 | 2715 | |
5ed8105e PA |
2716 | if (inferior_ptid != null_ptid) |
2717 | restore_thread.emplace (); | |
1941c569 | 2718 | |
6efcd9a8 PA |
2719 | /* Avoid reading registers -- we haven't fetched the target |
2720 | description yet. */ | |
00431a78 | 2721 | switch_to_thread_no_regs (thr); |
1941c569 PA |
2722 | |
2723 | /* When we "notice" a new inferior we need to do all the things we | |
2724 | would normally do if we had just attached to it. */ | |
2725 | ||
00431a78 | 2726 | if (thr->executing) |
1941c569 | 2727 | { |
0b333c5e | 2728 | struct attach_command_continuation_args *a; |
1941c569 PA |
2729 | struct inferior *inferior = current_inferior (); |
2730 | ||
2731 | /* We're going to install breakpoints, and poke at memory, | |
2732 | ensure that the inferior is stopped for a moment while we do | |
2733 | that. */ | |
2734 | target_stop (inferior_ptid); | |
2735 | ||
16c381f0 | 2736 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2737 | |
2738 | /* Wait for stop before proceeding. */ | |
0b333c5e PA |
2739 | a = XNEW (struct attach_command_continuation_args); |
2740 | a->args = xstrdup (""); | |
2741 | a->from_tty = from_tty; | |
6efcd9a8 | 2742 | a->mode = mode; |
0b333c5e PA |
2743 | add_inferior_continuation (attach_command_continuation, a, |
2744 | attach_command_continuation_free_args); | |
1941c569 | 2745 | |
0b333c5e | 2746 | return; |
1941c569 PA |
2747 | } |
2748 | ||
6efcd9a8 | 2749 | attach_post_wait ("" /* args */, from_tty, mode); |
1941c569 PA |
2750 | } |
2751 | ||
c906108c SS |
2752 | /* |
2753 | * detach_command -- | |
2754 | * takes a program previously attached to and detaches it. | |
2755 | * The program resumes execution and will no longer stop | |
2756 | * on signals, etc. We better not have left any breakpoints | |
2757 | * in the program or it'll die when it hits one. For this | |
2758 | * to work, it may be necessary for the process to have been | |
2759 | * previously attached. It *might* work if the program was | |
2760 | * started via the normal ptrace (PTRACE_TRACEME). | |
2761 | */ | |
2762 | ||
6418d433 | 2763 | void |
981a3fb3 | 2764 | detach_command (const char *args, int from_tty) |
c906108c | 2765 | { |
1f5d0fc9 | 2766 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a | 2767 | |
d7e15655 | 2768 | if (inferior_ptid == null_ptid) |
d729566a PA |
2769 | error (_("The program is not being run.")); |
2770 | ||
2f9d54cf PA |
2771 | query_if_trace_running (from_tty); |
2772 | ||
2773 | disconnect_tracing (); | |
d5551862 | 2774 | |
6e1e1966 | 2775 | target_detach (current_inferior (), from_tty); |
50c71eaf | 2776 | |
63000888 PA |
2777 | /* The current inferior process was just detached successfully. Get |
2778 | rid of breakpoints that no longer make sense. Note we don't do | |
2779 | this within target_detach because that is also used when | |
2780 | following child forks, and in that case we will want to transfer | |
2781 | breakpoints to the child, not delete them. */ | |
2782 | breakpoint_init_inferior (inf_exited); | |
2783 | ||
50c71eaf PA |
2784 | /* If the solist is global across inferiors, don't clear it when we |
2785 | detach from a single inferior. */ | |
f5656ead | 2786 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 2787 | no_shared_libraries (NULL, from_tty); |
8a305172 | 2788 | |
9a4105ab AC |
2789 | if (deprecated_detach_hook) |
2790 | deprecated_detach_hook (); | |
c906108c SS |
2791 | } |
2792 | ||
6ad8ae5c DJ |
2793 | /* Disconnect from the current target without resuming it (leaving it |
2794 | waiting for a debugger). | |
2795 | ||
2796 | We'd better not have left any breakpoints in the program or the | |
2797 | next debugger will get confused. Currently only supported for some | |
2798 | remote targets, since the normal attach mechanisms don't work on | |
2799 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
2800 | ||
2801 | static void | |
0b39b52e | 2802 | disconnect_command (const char *args, int from_tty) |
6ad8ae5c | 2803 | { |
1777feb0 | 2804 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
2805 | query_if_trace_running (from_tty); |
2806 | disconnect_tracing (); | |
6ad8ae5c | 2807 | target_disconnect (args, from_tty); |
e85a822c | 2808 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 2809 | init_thread_list (); |
9a4105ab AC |
2810 | if (deprecated_detach_hook) |
2811 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
2812 | } |
2813 | ||
5b6d1e4f PA |
2814 | /* Stop PTID in the current target, and tag the PTID threads as having |
2815 | been explicitly requested to stop. PTID can be a thread, a | |
2816 | process, or minus_one_ptid, meaning all threads of all inferiors of | |
2817 | the current target. */ | |
e42de8c7 | 2818 | |
5b6d1e4f PA |
2819 | static void |
2820 | stop_current_target_threads_ns (ptid_t ptid) | |
2821 | { | |
2822 | target_stop (ptid); | |
252fbfc8 PA |
2823 | |
2824 | /* Tag the thread as having been explicitly requested to stop, so | |
2825 | other parts of gdb know not to resume this thread automatically, | |
2826 | if it was stopped due to an internal event. Limit this to | |
2827 | non-stop mode, as when debugging a multi-threaded application in | |
2828 | all-stop mode, we will only get one stop event --- it's undefined | |
2829 | which thread will report the event. */ | |
5b6d1e4f PA |
2830 | set_stop_requested (current_inferior ()->process_target (), |
2831 | ptid, 1); | |
2832 | } | |
2833 | ||
2834 | /* See inferior.h. */ | |
2835 | ||
2836 | void | |
2837 | interrupt_target_1 (bool all_threads) | |
2838 | { | |
252fbfc8 | 2839 | if (non_stop) |
5b6d1e4f PA |
2840 | { |
2841 | if (all_threads) | |
2842 | { | |
2843 | scoped_restore_current_thread restore_thread; | |
2844 | ||
2845 | for (inferior *inf : all_inferiors ()) | |
2846 | { | |
2847 | switch_to_inferior_no_thread (inf); | |
2848 | stop_current_target_threads_ns (minus_one_ptid); | |
2849 | } | |
2850 | } | |
2851 | else | |
2852 | stop_current_target_threads_ns (inferior_ptid); | |
2853 | } | |
2854 | else | |
2855 | target_interrupt (); | |
77ebaa5a VP |
2856 | } |
2857 | ||
6339bfc4 DE |
2858 | /* interrupt [-a] |
2859 | Stop the execution of the target while running in async mode, in | |
17e5269b | 2860 | the background. In all-stop, stop the whole process. In non-stop |
8cae4b3f PA |
2861 | mode, stop the current thread only by default, or stop all threads |
2862 | if the `-a' switch is used. */ | |
2863 | ||
1dd5fedc | 2864 | static void |
0b39b52e | 2865 | interrupt_command (const char *args, int from_tty) |
43ff13b4 | 2866 | { |
362646f5 | 2867 | if (target_can_async_p ()) |
43ff13b4 | 2868 | { |
8cae4b3f PA |
2869 | int all_threads = 0; |
2870 | ||
1777feb0 | 2871 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 2872 | |
8cae4b3f | 2873 | if (args != NULL |
61012eef | 2874 | && startswith (args, "-a")) |
8cae4b3f PA |
2875 | all_threads = 1; |
2876 | ||
2877 | if (!non_stop && all_threads) | |
2878 | error (_("-a is meaningless in all-stop mode.")); | |
2879 | ||
77ebaa5a | 2880 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
2881 | } |
2882 | } | |
2883 | ||
cc86d1cb YQ |
2884 | /* See inferior.h. */ |
2885 | ||
2886 | void | |
2887 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
2888 | struct frame_info *frame, const char *args) | |
c906108c | 2889 | { |
cc86d1cb YQ |
2890 | int regnum; |
2891 | int printed_something = 0; | |
d80b854b | 2892 | |
f6efe3f8 | 2893 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
23e3a7ac | 2894 | { |
cc86d1cb | 2895 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 2896 | { |
cc86d1cb YQ |
2897 | printed_something = 1; |
2898 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 2899 | } |
23e3a7ac | 2900 | } |
cc86d1cb YQ |
2901 | if (!printed_something) |
2902 | fprintf_filtered (file, "No floating-point info " | |
2903 | "available for this processor.\n"); | |
23e3a7ac AC |
2904 | } |
2905 | ||
2906 | static void | |
1d12d88f | 2907 | info_float_command (const char *args, int from_tty) |
23e3a7ac | 2908 | { |
cc86d1cb YQ |
2909 | struct frame_info *frame; |
2910 | ||
206415a3 DJ |
2911 | if (!target_has_registers) |
2912 | error (_("The program has no registers now.")); | |
2913 | ||
cc86d1cb YQ |
2914 | frame = get_selected_frame (NULL); |
2915 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
2916 | } |
2917 | \f | |
145b16a9 UW |
2918 | /* Implement `info proc' family of commands. */ |
2919 | ||
2920 | static void | |
69f476a3 | 2921 | info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty) |
145b16a9 | 2922 | { |
3030c96e UW |
2923 | struct gdbarch *gdbarch = get_current_arch (); |
2924 | ||
451b7c33 TT |
2925 | if (!target_info_proc (args, what)) |
2926 | { | |
2927 | if (gdbarch_info_proc_p (gdbarch)) | |
2928 | gdbarch_info_proc (gdbarch, args, what); | |
2929 | else | |
2930 | error (_("Not supported on this target.")); | |
2931 | } | |
145b16a9 UW |
2932 | } |
2933 | ||
85102364 | 2934 | /* Implement `info proc' when given without any further parameters. */ |
145b16a9 UW |
2935 | |
2936 | static void | |
981a3fb3 | 2937 | info_proc_cmd (const char *args, int from_tty) |
145b16a9 UW |
2938 | { |
2939 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
2940 | } | |
2941 | ||
2942 | /* Implement `info proc mappings'. */ | |
2943 | ||
2944 | static void | |
69f476a3 | 2945 | info_proc_cmd_mappings (const char *args, int from_tty) |
145b16a9 UW |
2946 | { |
2947 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
2948 | } | |
2949 | ||
2950 | /* Implement `info proc stat'. */ | |
2951 | ||
2952 | static void | |
69f476a3 | 2953 | info_proc_cmd_stat (const char *args, int from_tty) |
145b16a9 UW |
2954 | { |
2955 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
2956 | } | |
2957 | ||
2958 | /* Implement `info proc status'. */ | |
2959 | ||
2960 | static void | |
69f476a3 | 2961 | info_proc_cmd_status (const char *args, int from_tty) |
145b16a9 UW |
2962 | { |
2963 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
2964 | } | |
2965 | ||
2966 | /* Implement `info proc cwd'. */ | |
2967 | ||
2968 | static void | |
69f476a3 | 2969 | info_proc_cmd_cwd (const char *args, int from_tty) |
145b16a9 UW |
2970 | { |
2971 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
2972 | } | |
2973 | ||
2974 | /* Implement `info proc cmdline'. */ | |
2975 | ||
2976 | static void | |
69f476a3 | 2977 | info_proc_cmd_cmdline (const char *args, int from_tty) |
145b16a9 UW |
2978 | { |
2979 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
2980 | } | |
2981 | ||
2982 | /* Implement `info proc exe'. */ | |
2983 | ||
2984 | static void | |
69f476a3 | 2985 | info_proc_cmd_exe (const char *args, int from_tty) |
145b16a9 UW |
2986 | { |
2987 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
2988 | } | |
2989 | ||
e98ee8c4 JB |
2990 | /* Implement `info proc files'. */ |
2991 | ||
2992 | static void | |
2993 | info_proc_cmd_files (const char *args, int from_tty) | |
2994 | { | |
2995 | info_proc_cmd_1 (args, IP_FILES, from_tty); | |
2996 | } | |
2997 | ||
145b16a9 UW |
2998 | /* Implement `info proc all'. */ |
2999 | ||
3000 | static void | |
69f476a3 | 3001 | info_proc_cmd_all (const char *args, int from_tty) |
145b16a9 UW |
3002 | { |
3003 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
3004 | } | |
3005 | ||
000439d5 TT |
3006 | /* Implement `show print finish'. */ |
3007 | ||
3008 | static void | |
3009 | show_print_finish (struct ui_file *file, int from_tty, | |
3010 | struct cmd_list_element *c, | |
3011 | const char *value) | |
3012 | { | |
3013 | fprintf_filtered (file, _("\ | |
3014 | Printing of return value after `finish' is %s.\n"), | |
3015 | value); | |
3016 | } | |
3017 | ||
3018 | ||
4e5a4f58 JB |
3019 | /* This help string is used for the run, start, and starti commands. |
3020 | It is defined as a macro to prevent duplication. */ | |
3021 | ||
3022 | #define RUN_ARGS_HELP \ | |
3023 | "You may specify arguments to give it.\n\ | |
3024 | Args may include \"*\", or \"[...]\"; they are expanded using the\n\ | |
3025 | shell that will start the program (specified by the \"$SHELL\" environment\n\ | |
3026 | variable). Input and output redirection with \">\", \"<\", or \">>\"\n\ | |
3027 | are also allowed.\n\ | |
3028 | \n\ | |
3029 | With no arguments, uses arguments last specified (with \"run\" or \n\ | |
3030 | \"set args\"). To cancel previous arguments and run with no arguments,\n\ | |
3031 | use \"set args\" without arguments.\n\ | |
3032 | \n\ | |
3033 | To start the inferior without using a shell, use \"set startup-with-shell off\"." | |
3034 | ||
6c265988 | 3035 | void _initialize_infcmd (); |
c906108c | 3036 | void |
6c265988 | 3037 | _initialize_infcmd () |
c906108c | 3038 | { |
145b16a9 | 3039 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3040 | struct cmd_list_element *c = NULL; |
6f937416 | 3041 | const char *cmd_name; |
3cb3b8df | 3042 | |
1777feb0 | 3043 | /* Add the filename of the terminal connected to inferior I/O. */ |
0a1ddfa6 SM |
3044 | add_setshow_optional_filename_cmd ("inferior-tty", class_run, |
3045 | &inferior_io_terminal_scratch, _("\ | |
3cb3b8df BR |
3046 | Set terminal for future runs of program being debugged."), _("\ |
3047 | Show terminal for future runs of program being debugged."), _("\ | |
0a1ddfa6 SM |
3048 | Usage: set inferior-tty [TTY]\n\n\ |
3049 | If TTY is omitted, the default behavior of using the same terminal as GDB\n\ | |
3050 | is restored."), | |
3051 | set_inferior_tty_command, | |
3052 | show_inferior_tty_command, | |
3053 | &setlist, &showlist); | |
21873064 | 3054 | cmd_name = "inferior-tty"; |
cf00cd6f | 3055 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
21873064 | 3056 | gdb_assert (c != NULL); |
57b4f16e | 3057 | add_alias_cmd ("tty", c, class_run, 0, &cmdlist); |
c906108c | 3058 | |
6ace3df1 YQ |
3059 | cmd_name = "args"; |
3060 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3061 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3062 | Set argument list to give program being debugged when it is started."), _("\ |
3063 | Show argument list to give program being debugged when it is started."), _("\ | |
3064 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3065 | set_args_command, |
3066 | show_args_command, | |
3067 | &setlist, &showlist); | |
cf00cd6f | 3068 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
6ace3df1 YQ |
3069 | gdb_assert (c != NULL); |
3070 | set_cmd_completer (c, filename_completer); | |
c906108c | 3071 | |
d092c5a2 SDJ |
3072 | cmd_name = "cwd"; |
3073 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3074 | &inferior_cwd_scratch, _("\ | |
3075 | Set the current working directory to be used when the inferior is started.\n\ | |
3076 | Changing this setting does not have any effect on inferiors that are\n\ | |
3077 | already running."), | |
3078 | _("\ | |
3079 | Show the current working directory that is used when the inferior is started."), | |
3080 | _("\ | |
3081 | Use this command to change the current working directory that will be used\n\ | |
3082 | when the inferior is started. This setting does not affect GDB's current\n\ | |
3083 | working directory."), | |
3084 | set_cwd_command, | |
3085 | show_cwd_command, | |
3086 | &setlist, &showlist); | |
cf00cd6f | 3087 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
d092c5a2 SDJ |
3088 | gdb_assert (c != NULL); |
3089 | set_cmd_completer (c, filename_completer); | |
3090 | ||
1a966eab AC |
3091 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3092 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3093 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3094 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3095 | environment to be given to the program."), &showlist); |
5ba2abeb | 3096 | set_cmd_completer (c, noop_completer); |
c906108c | 3097 | |
0743fc83 TT |
3098 | add_basic_prefix_cmd ("unset", no_class, |
3099 | _("Complement to certain \"set\" commands."), | |
3100 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 3101 | |
1a966eab AC |
3102 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3103 | Cancel environment variable VAR for the program.\n\ | |
3104 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3105 | &unsetlist); |
5ba2abeb | 3106 | set_cmd_completer (c, noop_completer); |
c906108c | 3107 | |
1a966eab AC |
3108 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3109 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3110 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3111 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3112 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3113 | &setlist); |
5ba2abeb | 3114 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3115 | |
1bedd215 AC |
3116 | c = add_com ("path", class_files, path_command, _("\ |
3117 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3118 | $cwd in the path means the current working directory.\n\ |
3119 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3120 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3121 | fully linked executable files and separately compiled object files as \ |
3122 | needed.")); | |
5ba2abeb | 3123 | set_cmd_completer (c, filename_completer); |
c906108c | 3124 | |
1a966eab AC |
3125 | c = add_cmd ("paths", no_class, path_info, _("\ |
3126 | Current search path for finding object files.\n\ | |
c906108c SS |
3127 | $cwd in the path means the current working directory.\n\ |
3128 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3129 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3130 | fully linked executable files and separately compiled object files as \ |
3131 | needed."), | |
c906108c | 3132 | &showlist); |
5ba2abeb | 3133 | set_cmd_completer (c, noop_completer); |
c906108c | 3134 | |
2277426b PA |
3135 | add_prefix_cmd ("kill", class_run, kill_command, |
3136 | _("Kill execution of program being debugged."), | |
3137 | &killlist, "kill ", 0, &cmdlist); | |
5fd62852 | 3138 | |
1bedd215 AC |
3139 | add_com ("attach", class_run, attach_command, _("\ |
3140 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3141 | This command attaches to another target, of the same type as your last\n\ |
3142 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3143 | The command may take as argument a process id or a device file.\n\ | |
3144 | For a process id, you must have permission to send the process a signal,\n\ | |
3145 | and it must have the same effective uid as the debugger.\n\ | |
3146 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3147 | program running in the process, looking first in the current working\n\ | |
3148 | directory, or (if not found there) using the source file search path\n\ | |
3149 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3150 | to specify the program, and to load its symbol table.")); |
c906108c | 3151 | |
f73adfeb | 3152 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3153 | Detach a process or file previously attached.\n\ |
c906108c | 3154 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb AS |
3155 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
3156 | &detachlist, "detach ", 0, &cmdlist); | |
c906108c | 3157 | |
1bedd215 AC |
3158 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3159 | Disconnect from a target.\n\ | |
6ad8ae5c | 3160 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3161 | all targets.")); |
6ad8ae5c | 3162 | |
de0bea00 | 3163 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3164 | Continue program with the specified signal.\n\ |
3165 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3166 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3167 | \n\ |
3168 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3169 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3170 | and you want to resume the program while discarding the signal.\n\ |
3171 | \n\ | |
3172 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3173 | the current thread only.")); | |
3174 | set_cmd_completer (c, signal_completer); | |
3175 | ||
3176 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3177 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3178 | Usage: queue-signal SIGNAL\n\ | |
3179 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3180 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3181 | \n\ | |
3182 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3183 | the current thread. This is useful in cases where the program stopped\n\ | |
3184 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3185 | \n\ | |
3186 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3187 | the current thread only.")); | |
de0bea00 | 3188 | set_cmd_completer (c, signal_completer); |
c906108c | 3189 | |
1bedd215 AC |
3190 | add_com ("stepi", class_run, stepi_command, _("\ |
3191 | Step one instruction exactly.\n\ | |
486c7739 MF |
3192 | Usage: stepi [N]\n\ |
3193 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3194 | reason).")); |
57b4f16e | 3195 | add_com_alias ("si", "stepi", class_run, 0); |
c906108c | 3196 | |
1bedd215 AC |
3197 | add_com ("nexti", class_run, nexti_command, _("\ |
3198 | Step one instruction, but proceed through subroutine calls.\n\ | |
486c7739 MF |
3199 | Usage: nexti [N]\n\ |
3200 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3201 | reason).")); |
57b4f16e | 3202 | add_com_alias ("ni", "nexti", class_run, 0); |
c906108c | 3203 | |
1bedd215 AC |
3204 | add_com ("finish", class_run, finish_command, _("\ |
3205 | Execute until selected stack frame returns.\n\ | |
486c7739 | 3206 | Usage: finish\n\ |
1bedd215 | 3207 | Upon return, the value returned is printed and put in the value history.")); |
0e479716 | 3208 | add_com_alias ("fin", "finish", class_run, 1); |
c906108c | 3209 | |
1bedd215 AC |
3210 | add_com ("next", class_run, next_command, _("\ |
3211 | Step program, proceeding through subroutine calls.\n\ | |
486c7739 MF |
3212 | Usage: next [N]\n\ |
3213 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3214 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3215 | the call, in effect treating it as a single source line.")); |
c906108c | 3216 | add_com_alias ("n", "next", class_run, 1); |
c906108c | 3217 | |
1bedd215 AC |
3218 | add_com ("step", class_run, step_command, _("\ |
3219 | Step program until it reaches a different source line.\n\ | |
486c7739 MF |
3220 | Usage: step [N]\n\ |
3221 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3222 | reason).")); |
c906108c SS |
3223 | add_com_alias ("s", "step", class_run, 1); |
3224 | ||
1bedd215 | 3225 | c = add_com ("until", class_run, until_command, _("\ |
590042fc | 3226 | Execute until past the current line or past a LOCATION.\n\ |
1bedd215 | 3227 | Execute until the program reaches a source line greater than the current\n\ |
3e43a32a MS |
3228 | or a specified location (same args as break command) within the current \ |
3229 | frame.")); | |
5ba2abeb | 3230 | set_cmd_completer (c, location_completer); |
c906108c | 3231 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 3232 | |
1bedd215 | 3233 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3234 | Continue the program up to the given location (same form as args for break \ |
3235 | command).\n\ | |
1bedd215 | 3236 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3237 | set_cmd_completer (c, location_completer); |
3238 | ||
1bedd215 AC |
3239 | c = add_com ("jump", class_run, jump_command, _("\ |
3240 | Continue program being debugged at specified line or address.\n\ | |
0a8ba311 | 3241 | Usage: jump LOCATION\n\ |
c906108c | 3242 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3243 | for an address to start at.")); |
5ba2abeb | 3244 | set_cmd_completer (c, location_completer); |
c1d780c2 | 3245 | add_com_alias ("j", "jump", class_run, 1); |
c906108c | 3246 | |
df983543 | 3247 | add_com ("continue", class_run, continue_command, _("\ |
1bedd215 | 3248 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3249 | Usage: continue [N]\n\ |
c906108c SS |
3250 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3251 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3252 | the breakpoint won't break until the Nth time it is reached).\n\ |
3253 | \n\ | |
3254 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3255 | otherwise all the threads in the program are continued. To \n\ | |
3256 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3257 | Specifying -a and an ignore count simultaneously is an error.")); | |
c906108c SS |
3258 | add_com_alias ("c", "cont", class_run, 1); |
3259 | add_com_alias ("fg", "cont", class_run, 1); | |
3260 | ||
1bedd215 | 3261 | c = add_com ("run", class_run, run_command, _("\ |
4e5a4f58 JB |
3262 | Start debugged program.\n" |
3263 | RUN_ARGS_HELP)); | |
5ba2abeb | 3264 | set_cmd_completer (c, filename_completer); |
c906108c | 3265 | add_com_alias ("r", "run", class_run, 1); |
c906108c | 3266 | |
1bedd215 | 3267 | c = add_com ("start", class_run, start_command, _("\ |
4e5a4f58 JB |
3268 | Start the debugged program stopping at the beginning of the main procedure.\n" |
3269 | RUN_ARGS_HELP)); | |
3270 | set_cmd_completer (c, filename_completer); | |
3271 | ||
3272 | c = add_com ("starti", class_run, starti_command, _("\ | |
3273 | Start the debugged program stopping at the first instruction.\n" | |
3274 | RUN_ARGS_HELP)); | |
a4d5f2e0 JB |
3275 | set_cmd_completer (c, filename_completer); |
3276 | ||
0a07590b | 3277 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3278 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3279 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3280 | otherwise all the threads in the program are stopped. To \n\ | |
3281 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3282 | |
11db9430 | 3283 | c = add_info ("registers", info_registers_command, _("\ |
1bedd215 | 3284 | List of integer registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3285 | One or more register names as argument means describe the given registers.\n\ |
3286 | One or more register group names as argument means describe the registers\n\ | |
3287 | in the named register groups.")); | |
7194c49b | 3288 | add_info_alias ("r", "registers", 1); |
71c24708 | 3289 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3290 | |
11db9430 | 3291 | c = add_info ("all-registers", info_all_registers_command, _("\ |
1bedd215 | 3292 | List of all registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3293 | One or more register names as argument means describe the given registers.\n\ |
3294 | One or more register group names as argument means describe the registers\n\ | |
3295 | in the named register groups.")); | |
71c24708 | 3296 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3297 | |
11db9430 | 3298 | add_info ("program", info_program_command, |
1bedd215 | 3299 | _("Execution status of the program.")); |
c906108c | 3300 | |
11db9430 | 3301 | add_info ("float", info_float_command, |
590042fc | 3302 | _("Print the status of the floating point unit.")); |
c906108c | 3303 | |
11db9430 | 3304 | add_info ("vector", info_vector_command, |
590042fc | 3305 | _("Print the status of the vector unit.")); |
145b16a9 UW |
3306 | |
3307 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3308 | _("\ | |
73f1bd76 | 3309 | Show additional information about a process.\n\ |
145b16a9 UW |
3310 | Specify any process id, or use the program being debugged by default."), |
3311 | &info_proc_cmdlist, "info proc ", | |
3312 | 1/*allow-unknown*/, &infolist); | |
3313 | ||
3314 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
73f1bd76 | 3315 | List memory regions mapped by the specified process."), |
145b16a9 UW |
3316 | &info_proc_cmdlist); |
3317 | ||
3318 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3319 | List process info from /proc/PID/stat."), | |
3320 | &info_proc_cmdlist); | |
3321 | ||
3322 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3323 | List process info from /proc/PID/status."), | |
3324 | &info_proc_cmdlist); | |
3325 | ||
3326 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
73f1bd76 | 3327 | List current working directory of the specified process."), |
145b16a9 UW |
3328 | &info_proc_cmdlist); |
3329 | ||
3330 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
73f1bd76 | 3331 | List command line arguments of the specified process."), |
145b16a9 UW |
3332 | &info_proc_cmdlist); |
3333 | ||
3334 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
73f1bd76 | 3335 | List absolute filename for executable of the specified process."), |
145b16a9 UW |
3336 | &info_proc_cmdlist); |
3337 | ||
e98ee8c4 JB |
3338 | add_cmd ("files", class_info, info_proc_cmd_files, _("\ |
3339 | List files opened by the specified process."), | |
3340 | &info_proc_cmdlist); | |
3341 | ||
145b16a9 | 3342 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ |
73f1bd76 | 3343 | List all available info about the specified process."), |
145b16a9 | 3344 | &info_proc_cmdlist); |
000439d5 TT |
3345 | |
3346 | add_setshow_boolean_cmd ("finish", class_support, | |
3347 | &user_print_options.finish_print, _("\ | |
3348 | Set whether `finish' prints the return value."), _("\ | |
3349 | Show whether `finish' prints the return value."), NULL, | |
3350 | NULL, | |
3351 | show_print_finish, | |
3352 | &setprintlist, &showprintlist); | |
c906108c | 3353 | } |