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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 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" |
f8eba3c6 | 50 | #include "linespec.h" |
243a9253 | 51 | #include "thread-fsm.h" |
3b12939d | 52 | #include "top.h" |
8980e177 | 53 | #include "interps.h" |
4a4c04f1 | 54 | #include "skip.h" |
268a13a5 | 55 | #include "gdbsupport/gdb_optional.h" |
b46a8d7c | 56 | #include "source.h" |
7f6aba03 | 57 | #include "cli/cli-style.h" |
d5551862 | 58 | |
a58dd373 EZ |
59 | /* Local functions: */ |
60 | ||
a14ed312 | 61 | static void until_next_command (int); |
c906108c | 62 | |
0b39b52e | 63 | static void step_1 (int, int, const char *); |
c906108c | 64 | |
c906108c | 65 | #define ERROR_NO_INFERIOR \ |
55f6301a | 66 | if (!target_has_execution ()) error (_("The program is not being run.")); |
c906108c | 67 | |
3e43a32a MS |
68 | /* Scratch area where string containing arguments to give to the |
69 | program will be stored by 'set args'. As soon as anything is | |
70 | stored, notice_args_set will move it into per-inferior storage. | |
1777feb0 | 71 | Arguments are separated by spaces. Empty string (pointer to '\0') |
3e43a32a | 72 | means no args. */ |
c906108c | 73 | |
3f81c18a | 74 | static char *inferior_args_scratch; |
c906108c | 75 | |
d092c5a2 SDJ |
76 | /* Scratch area where the new cwd will be stored by 'set cwd'. */ |
77 | ||
78 | static char *inferior_cwd_scratch; | |
79 | ||
3f81c18a VP |
80 | /* Scratch area where 'set inferior-tty' will store user-provided value. |
81 | We'll immediate copy it into per-inferior storage. */ | |
552c04a7 | 82 | |
3f81c18a | 83 | static char *inferior_io_terminal_scratch; |
c906108c SS |
84 | |
85 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
86 | Since various parts of infrun.c test this to see whether there is a program | |
87 | being debugged it should be nonzero (currently 3 is used) for remote | |
88 | debugging. */ | |
89 | ||
39f77062 | 90 | ptid_t inferior_ptid; |
c906108c | 91 | |
c906108c SS |
92 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
93 | ||
aa7d318d | 94 | enum stop_stack_kind stop_stack_dummy; |
c906108c SS |
95 | |
96 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
97 | process. */ | |
98 | ||
99 | int stopped_by_random_signal; | |
100 | ||
c906108c | 101 | \f |
3f81c18a VP |
102 | |
103 | static void | |
eb4c3f4a | 104 | set_inferior_tty_command (const char *args, int from_tty, |
3f81c18a VP |
105 | struct cmd_list_element *c) |
106 | { | |
107 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
108 | Now route it to current inferior. */ | |
05779d57 | 109 | current_inferior ()->set_tty (inferior_io_terminal_scratch); |
3f81c18a VP |
110 | } |
111 | ||
112 | static void | |
113 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
114 | struct cmd_list_element *c, const char *value) | |
115 | { | |
116 | /* Note that we ignore the passed-in value in favor of computing it | |
117 | directly. */ | |
05779d57 | 118 | const char *inferior_tty = current_inferior ()->tty (); |
abbb1732 | 119 | |
05779d57 PA |
120 | if (inferior_tty == nullptr) |
121 | inferior_tty = ""; | |
3f81c18a | 122 | fprintf_filtered (gdb_stdout, |
275f2e57 | 123 | _("Terminal for future runs of program being debugged " |
05779d57 | 124 | "is \"%s\".\n"), inferior_tty); |
3cb3b8df BR |
125 | } |
126 | ||
cbaaa0ca | 127 | const char * |
07091751 FN |
128 | get_inferior_args (void) |
129 | { | |
3f81c18a | 130 | if (current_inferior ()->argc != 0) |
552c04a7 | 131 | { |
8c4b5f3d | 132 | gdb::array_view<char * const> args (current_inferior ()->argv, |
dda83cd7 | 133 | current_inferior ()->argc); |
8c4b5f3d | 134 | std::string n = construct_inferior_arguments (args); |
c699004a | 135 | set_inferior_args (n.c_str ()); |
552c04a7 TT |
136 | } |
137 | ||
3f81c18a | 138 | if (current_inferior ()->args == NULL) |
ec66d6ea | 139 | current_inferior ()->args = make_unique_xstrdup (""); |
552c04a7 | 140 | |
ec66d6ea | 141 | return current_inferior ()->args.get (); |
07091751 FN |
142 | } |
143 | ||
3f81c18a VP |
144 | /* Set the arguments for the current inferior. Ownership of |
145 | NEWARGS is not transferred. */ | |
146 | ||
147 | void | |
0b39b52e | 148 | set_inferior_args (const char *newargs) |
07091751 | 149 | { |
ec66d6ea SM |
150 | if (newargs != nullptr) |
151 | current_inferior ()->args = make_unique_xstrdup (newargs); | |
152 | else | |
153 | current_inferior ()->args.reset (); | |
154 | ||
3f81c18a VP |
155 | current_inferior ()->argc = 0; |
156 | current_inferior ()->argv = 0; | |
07091751 | 157 | } |
c5aa993b | 158 | |
552c04a7 TT |
159 | void |
160 | set_inferior_args_vector (int argc, char **argv) | |
161 | { | |
3f81c18a VP |
162 | current_inferior ()->argc = argc; |
163 | current_inferior ()->argv = argv; | |
552c04a7 TT |
164 | } |
165 | ||
166 | /* Notice when `set args' is run. */ | |
6339bfc4 | 167 | |
552c04a7 | 168 | static void |
eb4c3f4a | 169 | set_args_command (const char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 170 | { |
3f81c18a VP |
171 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
172 | Now route it to current inferior. */ | |
173 | set_inferior_args (inferior_args_scratch); | |
552c04a7 TT |
174 | } |
175 | ||
176 | /* Notice when `show args' is run. */ | |
6339bfc4 | 177 | |
552c04a7 | 178 | static void |
3f81c18a VP |
179 | show_args_command (struct ui_file *file, int from_tty, |
180 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 181 | { |
258c00cc TT |
182 | /* Note that we ignore the passed-in value in favor of computing it |
183 | directly. */ | |
184 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
552c04a7 TT |
185 | } |
186 | ||
268a13a5 | 187 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 | 188 | |
bc3b087d | 189 | void |
d092c5a2 SDJ |
190 | set_inferior_cwd (const char *cwd) |
191 | { | |
192 | struct inferior *inf = current_inferior (); | |
193 | ||
194 | gdb_assert (inf != NULL); | |
195 | ||
196 | if (cwd == NULL) | |
197 | inf->cwd.reset (); | |
198 | else | |
199 | inf->cwd.reset (xstrdup (cwd)); | |
200 | } | |
201 | ||
268a13a5 | 202 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 SDJ |
203 | |
204 | const char * | |
205 | get_inferior_cwd () | |
206 | { | |
207 | return current_inferior ()->cwd.get (); | |
208 | } | |
209 | ||
210 | /* Handle the 'set cwd' command. */ | |
211 | ||
212 | static void | |
eb4c3f4a | 213 | set_cwd_command (const char *args, int from_tty, struct cmd_list_element *c) |
d092c5a2 SDJ |
214 | { |
215 | if (*inferior_cwd_scratch == '\0') | |
216 | set_inferior_cwd (NULL); | |
217 | else | |
218 | set_inferior_cwd (inferior_cwd_scratch); | |
219 | } | |
220 | ||
221 | /* Handle the 'show cwd' command. */ | |
222 | ||
223 | static void | |
224 | show_cwd_command (struct ui_file *file, int from_tty, | |
225 | struct cmd_list_element *c, const char *value) | |
226 | { | |
227 | const char *cwd = get_inferior_cwd (); | |
228 | ||
229 | if (cwd == NULL) | |
230 | fprintf_filtered (gdb_stdout, | |
231 | _("\ | |
232 | You have not set the inferior's current working directory.\n\ | |
bc3b087d SDJ |
233 | The inferior will inherit GDB's cwd if native debugging, or the remote\n\ |
234 | server's cwd if remote debugging.\n")); | |
d092c5a2 SDJ |
235 | else |
236 | fprintf_filtered (gdb_stdout, | |
237 | _("Current working directory that will be used " | |
238 | "when starting the inferior is \"%s\".\n"), cwd); | |
239 | } | |
240 | ||
552c04a7 | 241 | |
6c4486e6 PA |
242 | /* This function strips the '&' character (indicating background |
243 | execution) that is added as *the last* of the arguments ARGS of a | |
244 | command. A copy of the incoming ARGS without the '&' is returned, | |
245 | unless the resulting string after stripping is empty, in which case | |
246 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
247 | whether the '&' character was found. */ | |
6339bfc4 | 248 | |
6be9a197 | 249 | static gdb::unique_xmalloc_ptr<char> |
6c4486e6 | 250 | strip_bg_char (const char *args, int *bg_char_p) |
43ff13b4 | 251 | { |
6c4486e6 | 252 | const char *p; |
c5aa993b | 253 | |
6c4486e6 PA |
254 | if (args == NULL || *args == '\0') |
255 | { | |
256 | *bg_char_p = 0; | |
257 | return NULL; | |
258 | } | |
c5aa993b | 259 | |
6c4486e6 PA |
260 | p = args + strlen (args); |
261 | if (p[-1] == '&') | |
43ff13b4 | 262 | { |
6c4486e6 PA |
263 | p--; |
264 | while (p > args && isspace (p[-1])) | |
265 | p--; | |
266 | ||
267 | *bg_char_p = 1; | |
268 | if (p != args) | |
6be9a197 TT |
269 | return gdb::unique_xmalloc_ptr<char> |
270 | (savestring (args, p - args)); | |
6c4486e6 | 271 | else |
6be9a197 | 272 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
43ff13b4 | 273 | } |
6c4486e6 PA |
274 | |
275 | *bg_char_p = 0; | |
b02f78f9 | 276 | return make_unique_xstrdup (args); |
43ff13b4 JM |
277 | } |
278 | ||
281b533b DJ |
279 | /* Common actions to take after creating any sort of inferior, by any |
280 | means (running, attaching, connecting, et cetera). The target | |
281 | should be stopped. */ | |
282 | ||
283 | void | |
a7aba266 | 284 | post_create_inferior (int from_tty) |
281b533b | 285 | { |
ce406537 | 286 | |
b79599ff | 287 | /* Be sure we own the terminal in case write operations are performed. */ |
223ffa71 | 288 | target_terminal::ours_for_output (); |
b79599ff | 289 | |
424163ea DJ |
290 | /* If the target hasn't taken care of this already, do it now. |
291 | Targets which need to access registers during to_open, | |
292 | to_create_inferior, or to_attach should do it earlier; but many | |
293 | don't need to. */ | |
294 | target_find_description (); | |
295 | ||
ce406537 PA |
296 | /* Now that we know the register layout, retrieve current PC. But |
297 | if the PC is unavailable (e.g., we're opening a core file with | |
298 | missing registers info), ignore it. */ | |
f2ffa92b PA |
299 | thread_info *thr = inferior_thread (); |
300 | ||
301 | thr->suspend.stop_pc = 0; | |
a70b8144 | 302 | try |
ce406537 | 303 | { |
8dc3273e SM |
304 | regcache *rc = get_thread_regcache (thr); |
305 | thr->suspend.stop_pc = regcache_read_pc (rc); | |
ce406537 | 306 | } |
230d2906 | 307 | catch (const gdb_exception_error &ex) |
7556d4a4 PA |
308 | { |
309 | if (ex.error != NOT_AVAILABLE_ERROR) | |
eedc3f4f | 310 | throw; |
7556d4a4 | 311 | } |
f698437e | 312 | |
7e10abd1 | 313 | if (current_program_space->exec_bfd ()) |
50c71eaf | 314 | { |
2eff07b3 PP |
315 | const unsigned solib_add_generation |
316 | = current_program_space->solib_add_generation; | |
317 | ||
122373f7 SM |
318 | scoped_restore restore_in_initial_library_scan |
319 | = make_scoped_restore (¤t_inferior ()->in_initial_library_scan, | |
320 | true); | |
321 | ||
9353355f DJ |
322 | /* Create the hooks to handle shared library load and unload |
323 | events. */ | |
268a4a75 | 324 | solib_create_inferior_hook (from_tty); |
268a4a75 | 325 | |
2eff07b3 PP |
326 | if (current_program_space->solib_add_generation == solib_add_generation) |
327 | { | |
328 | /* The platform-specific hook should load initial shared libraries, | |
329 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
330 | targets should be fixed anyway. Call it only after the solib | |
331 | target has been initialized by solib_create_inferior_hook. */ | |
332 | ||
333 | if (info_verbose) | |
334 | warning (_("platform-specific solib_create_inferior_hook did " | |
335 | "not load initial shared libraries.")); | |
336 | ||
337 | /* If the solist is global across processes, there's no need to | |
338 | refetch it here. */ | |
f5656ead | 339 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 340 | solib_add (NULL, 0, auto_solib_add); |
2eff07b3 | 341 | } |
9353355f DJ |
342 | } |
343 | ||
ea5d7a99 PM |
344 | /* If the user sets watchpoints before execution having started, |
345 | then she gets software watchpoints, because GDB can't know which | |
346 | target will end up being pushed, or if it supports hardware | |
347 | watchpoints or not. breakpoint_re_set takes care of promoting | |
348 | watchpoints to hardware watchpoints if possible, however, if this | |
349 | new inferior doesn't load shared libraries or we don't pull in | |
350 | symbols from any other source on this target/arch, | |
351 | breakpoint_re_set is never called. Call it now so that software | |
352 | watchpoints get a chance to be promoted to hardware watchpoints | |
353 | if the now pushed target supports hardware watchpoints. */ | |
354 | breakpoint_re_set (); | |
355 | ||
a0ff652f | 356 | gdb::observers::inferior_created.notify (current_inferior ()); |
281b533b DJ |
357 | } |
358 | ||
a4d5f2e0 JB |
359 | /* Kill the inferior if already running. This function is designed |
360 | to be called when we are about to start the execution of the program | |
361 | from the beginning. Ask the user to confirm that he wants to restart | |
362 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 363 | |
8edfe269 | 364 | static void |
a4d5f2e0 JB |
365 | kill_if_already_running (int from_tty) |
366 | { | |
55f6301a | 367 | if (inferior_ptid != null_ptid && target_has_execution ()) |
c906108c | 368 | { |
8edfe269 DJ |
369 | /* Bail out before killing the program if we will not be able to |
370 | restart it. */ | |
371 | target_require_runnable (); | |
372 | ||
adf40b2e | 373 | if (from_tty |
9e2f0ad4 HZ |
374 | && !query (_("The program being debugged has been started already.\n\ |
375 | Start it from the beginning? "))) | |
8a3fe4f8 | 376 | error (_("Program not restarted.")); |
c906108c | 377 | target_kill (); |
c906108c | 378 | } |
a4d5f2e0 JB |
379 | } |
380 | ||
329ea579 | 381 | /* See inferior.h. */ |
8bc2fe48 | 382 | |
329ea579 | 383 | void |
8bc2fe48 PA |
384 | prepare_execution_command (struct target_ops *target, int background) |
385 | { | |
386 | /* If we get a request for running in the bg but the target | |
387 | doesn't support it, error out. */ | |
f6ac5f3d | 388 | if (background && !target->can_async_p ()) |
8bc2fe48 PA |
389 | error (_("Asynchronous execution not supported on this target.")); |
390 | ||
0b333c5e | 391 | if (!background) |
8bc2fe48 | 392 | { |
0b333c5e PA |
393 | /* If we get a request for running in the fg, then we need to |
394 | simulate synchronous (fg) execution. Note no cleanup is | |
395 | necessary for this. stdin is re-enabled whenever an error | |
396 | reaches the top level. */ | |
a8836c93 | 397 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
398 | } |
399 | } | |
400 | ||
4e5a4f58 JB |
401 | /* Determine how the new inferior will behave. */ |
402 | ||
403 | enum run_how | |
404 | { | |
405 | /* Run program without any explicit stop during startup. */ | |
406 | RUN_NORMAL, | |
407 | ||
408 | /* Stop at the beginning of the program's main function. */ | |
409 | RUN_STOP_AT_MAIN, | |
410 | ||
411 | /* Stop at the first instruction of the program. */ | |
412 | RUN_STOP_AT_FIRST_INSN | |
413 | }; | |
414 | ||
415 | /* Implement the "run" command. Force a stop during program start if | |
416 | requested by RUN_HOW. */ | |
f67a969f | 417 | |
a4d5f2e0 | 418 | static void |
0b39b52e | 419 | run_command_1 (const char *args, int from_tty, enum run_how run_how) |
a4d5f2e0 | 420 | { |
7c5ded6a | 421 | const char *exec_file; |
79a45e25 | 422 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 423 | struct target_ops *run_target; |
6c4486e6 | 424 | int async_exec; |
c906108c | 425 | |
a4d5f2e0 JB |
426 | dont_repeat (); |
427 | ||
1192f124 SM |
428 | scoped_disable_commit_resumed disable_commit_resumed ("running"); |
429 | ||
a4d5f2e0 | 430 | kill_if_already_running (from_tty); |
3c35e65b UW |
431 | |
432 | init_wait_for_inferior (); | |
c906108c SS |
433 | clear_breakpoint_hit_counts (); |
434 | ||
fd79ecee DJ |
435 | /* Clean up any leftovers from other runs. Some other things from |
436 | this function should probably be moved into target_pre_inferior. */ | |
437 | target_pre_inferior (from_tty); | |
438 | ||
39ad761d JB |
439 | /* The comment here used to read, "The exec file is re-read every |
440 | time we do a generic_mourn_inferior, so we just have to worry | |
441 | about the symbol file." The `generic_mourn_inferior' function | |
442 | gets called whenever the program exits. However, suppose the | |
443 | program exits, and *then* the executable file changes? We need | |
444 | to check again here. Since reopen_exec_file doesn't do anything | |
445 | if the timestamp hasn't changed, I don't see the harm. */ | |
446 | reopen_exec_file (); | |
c906108c SS |
447 | reread_symbols (); |
448 | ||
6be9a197 TT |
449 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
450 | args = stripped.get (); | |
f67a969f | 451 | |
8bc2fe48 PA |
452 | /* Do validation and preparation before possibly changing anything |
453 | in the inferior. */ | |
39ad761d | 454 | |
b3ccfe11 TT |
455 | run_target = find_run_target (); |
456 | ||
8bc2fe48 PA |
457 | prepare_execution_command (run_target, async_exec); |
458 | ||
f6ac5f3d | 459 | if (non_stop && !run_target->supports_non_stop ()) |
9908b566 VP |
460 | error (_("The target does not support running in non-stop mode.")); |
461 | ||
8bc2fe48 PA |
462 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
463 | ||
4e5a4f58 JB |
464 | /* Insert temporary breakpoint in main function if requested. */ |
465 | if (run_how == RUN_STOP_AT_MAIN) | |
e242fd12 SM |
466 | { |
467 | std::string arg = string_printf ("-qualified %s", main_name ()); | |
468 | tbreak_command (arg.c_str (), 0); | |
469 | } | |
8bc2fe48 | 470 | |
7c5ded6a | 471 | exec_file = get_exec_file (0); |
8bc2fe48 | 472 | |
c906108c SS |
473 | /* We keep symbols from add-symbol-file, on the grounds that the |
474 | user might want to add some symbols before running the program | |
475 | (right?). But sometimes (dynamic loading where the user manually | |
476 | introduces the new symbols with add-symbol-file), the code which | |
477 | the symbols describe does not persist between runs. Currently | |
478 | the user has to manually nuke all symbols between runs if they | |
479 | want them to go away (PR 2207). This is probably reasonable. */ | |
480 | ||
8bc2fe48 PA |
481 | /* If there were other args, beside '&', process them. */ |
482 | if (args != NULL) | |
483 | set_inferior_args (args); | |
c906108c SS |
484 | |
485 | if (from_tty) | |
486 | { | |
112e8700 SM |
487 | uiout->field_string (NULL, "Starting program"); |
488 | uiout->text (": "); | |
8b93c638 | 489 | if (exec_file) |
112e8700 SM |
490 | uiout->field_string ("execfile", exec_file); |
491 | uiout->spaces (1); | |
552c04a7 TT |
492 | /* We call get_inferior_args() because we might need to compute |
493 | the value now. */ | |
112e8700 SM |
494 | uiout->field_string ("infargs", get_inferior_args ()); |
495 | uiout->text ("\n"); | |
496 | uiout->flush (); | |
c906108c SS |
497 | } |
498 | ||
552c04a7 TT |
499 | /* We call get_inferior_args() because we might need to compute |
500 | the value now. */ | |
f6ac5f3d PA |
501 | run_target->create_inferior (exec_file, |
502 | std::string (get_inferior_args ()), | |
503 | current_inferior ()->environment.envp (), | |
504 | from_tty); | |
b3ccfe11 TT |
505 | /* to_create_inferior should push the target, so after this point we |
506 | shouldn't refer to run_target again. */ | |
507 | run_target = NULL; | |
281b533b | 508 | |
29f49a6a PA |
509 | /* We're starting off a new process. When we get out of here, in |
510 | non-stop mode, finish the state of all threads of that process, | |
511 | but leave other threads alone, as they may be stopped in internal | |
512 | events --- the frontend shouldn't see them as stopped. In | |
513 | all-stop, always finish the state of all threads, as we may be | |
514 | resuming more than just the new process. */ | |
5b6d1e4f PA |
515 | process_stratum_target *finish_target; |
516 | ptid_t finish_ptid; | |
517 | if (non_stop) | |
518 | { | |
519 | finish_target = current_inferior ()->process_target (); | |
520 | finish_ptid = ptid_t (current_inferior ()->pid); | |
521 | } | |
522 | else | |
523 | { | |
524 | finish_target = nullptr; | |
525 | finish_ptid = minus_one_ptid; | |
526 | } | |
527 | scoped_finish_thread_state finish_state (finish_target, finish_ptid); | |
29f49a6a | 528 | |
de1b3c3d PA |
529 | /* Pass zero for FROM_TTY, because at this point the "run" command |
530 | has done its thing; now we are setting up the running program. */ | |
a7aba266 | 531 | post_create_inferior (0); |
281b533b | 532 | |
4e5a4f58 JB |
533 | /* Queue a pending event so that the program stops immediately. */ |
534 | if (run_how == RUN_STOP_AT_FIRST_INSN) | |
535 | { | |
536 | thread_info *thr = inferior_thread (); | |
537 | thr->suspend.waitstatus_pending_p = 1; | |
538 | thr->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED; | |
539 | thr->suspend.waitstatus.value.sig = GDB_SIGNAL_0; | |
540 | } | |
541 | ||
74d1f91e JK |
542 | /* Start the target running. Do not use -1 continuation as it would skip |
543 | breakpoint right at the entry point. */ | |
64ce06e4 | 544 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 545 | |
29f49a6a PA |
546 | /* Since there was no error, there's no need to finish the thread |
547 | states here. */ | |
731f534f | 548 | finish_state.release (); |
1192f124 SM |
549 | |
550 | disable_commit_resumed.reset_and_commit (); | |
29f49a6a | 551 | } |
c906108c | 552 | |
f67a969f | 553 | static void |
0b39b52e | 554 | run_command (const char *args, int from_tty) |
f67a969f | 555 | { |
4e5a4f58 | 556 | run_command_1 (args, from_tty, RUN_NORMAL); |
f67a969f JB |
557 | } |
558 | ||
a4d5f2e0 JB |
559 | /* Start the execution of the program up until the beginning of the main |
560 | program. */ | |
561 | ||
562 | static void | |
0b39b52e | 563 | start_command (const char *args, int from_tty) |
a4d5f2e0 JB |
564 | { |
565 | /* Some languages such as Ada need to search inside the program | |
566 | minimal symbols for the location where to put the temporary | |
567 | breakpoint before starting. */ | |
568 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 569 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 570 | |
f67a969f | 571 | /* Run the program until reaching the main procedure... */ |
4e5a4f58 JB |
572 | run_command_1 (args, from_tty, RUN_STOP_AT_MAIN); |
573 | } | |
574 | ||
575 | /* Start the execution of the program stopping at the first | |
576 | instruction. */ | |
577 | ||
578 | static void | |
0b39b52e | 579 | starti_command (const char *args, int from_tty) |
4e5a4f58 JB |
580 | { |
581 | run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN); | |
a4d5f2e0 JB |
582 | } |
583 | ||
8cae4b3f PA |
584 | static int |
585 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
586 | { | |
74531fed PA |
587 | /* We go through all threads individually instead of compressing |
588 | into a single target `resume_all' request, because some threads | |
589 | may be stopped in internal breakpoints/events, or stopped waiting | |
590 | for its turn in the displaced stepping queue (that is, they are | |
591 | running && !executing). The target side has no idea about why | |
592 | the thread is stopped, so a `resume_all' command would resume too | |
593 | much. If/when GDB gains a way to tell the target `hold this | |
594 | thread stopped until I say otherwise', then we can optimize | |
595 | this. */ | |
00431a78 | 596 | if (thread->state != THREAD_STOPPED) |
8cae4b3f PA |
597 | return 0; |
598 | ||
5b6d1e4f PA |
599 | if (!thread->inf->has_execution ()) |
600 | return 0; | |
601 | ||
00431a78 | 602 | switch_to_thread (thread); |
70509625 | 603 | clear_proceed_status (0); |
64ce06e4 | 604 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
605 | return 0; |
606 | } | |
607 | ||
70221824 | 608 | static void |
d729566a PA |
609 | ensure_valid_thread (void) |
610 | { | |
00431a78 PA |
611 | if (inferior_ptid == null_ptid |
612 | || inferior_thread ()->state == THREAD_EXITED) | |
3e43a32a | 613 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
614 | } |
615 | ||
573cda03 | 616 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 617 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
618 | disallow those commands. */ |
619 | ||
70221824 | 620 | static void |
573cda03 SS |
621 | ensure_not_tfind_mode (void) |
622 | { | |
623 | if (get_traceframe_number () >= 0) | |
3e43a32a | 624 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
625 | } |
626 | ||
3d3fef6b YQ |
627 | /* Throw an error indicating the current thread is running. */ |
628 | ||
629 | static void | |
630 | error_is_running (void) | |
631 | { | |
632 | error (_("Cannot execute this command while " | |
633 | "the selected thread is running.")); | |
634 | } | |
635 | ||
636 | /* Calls error_is_running if the current thread is running. */ | |
637 | ||
638 | static void | |
639 | ensure_not_running (void) | |
640 | { | |
00431a78 | 641 | if (inferior_thread ()->state == THREAD_RUNNING) |
3d3fef6b YQ |
642 | error_is_running (); |
643 | } | |
644 | ||
77ebaa5a VP |
645 | void |
646 | continue_1 (int all_threads) | |
647 | { | |
3d488bfc | 648 | ERROR_NO_INFERIOR; |
573cda03 | 649 | ensure_not_tfind_mode (); |
3d488bfc | 650 | |
77ebaa5a VP |
651 | if (non_stop && all_threads) |
652 | { | |
653 | /* Don't error out if the current thread is running, because | |
abbb1732 | 654 | there may be other stopped threads. */ |
77ebaa5a | 655 | |
5ed8105e PA |
656 | /* Backup current thread and selected frame and restore on scope |
657 | exit. */ | |
658 | scoped_restore_current_thread restore_thread; | |
77ebaa5a VP |
659 | |
660 | iterate_over_threads (proceed_thread_callback, NULL); | |
661 | ||
3b12939d | 662 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
663 | { |
664 | /* If all threads in the target were already running, | |
665 | proceed_thread_callback ends up never calling proceed, | |
666 | and so nothing calls this to put the inferior's terminal | |
667 | settings in effect and remove stdin from the event loop, | |
668 | which we must when running a foreground command. E.g.: | |
669 | ||
670 | (gdb) c -a& | |
671 | Continuing. | |
672 | <all threads are running now> | |
673 | (gdb) c -a | |
674 | Continuing. | |
675 | <no thread was resumed, but the inferior now owns the terminal> | |
676 | */ | |
223ffa71 | 677 | target_terminal::inferior (); |
0ff33695 | 678 | } |
77ebaa5a VP |
679 | } |
680 | else | |
681 | { | |
d729566a | 682 | ensure_valid_thread (); |
77ebaa5a | 683 | ensure_not_running (); |
70509625 | 684 | clear_proceed_status (0); |
64ce06e4 | 685 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
686 | } |
687 | } | |
688 | ||
8cae4b3f | 689 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 690 | |
1dd5fedc | 691 | static void |
0b39b52e | 692 | continue_command (const char *args, int from_tty) |
c906108c | 693 | { |
6c4486e6 | 694 | int async_exec; |
5b6d1e4f | 695 | bool all_threads_p = false; |
6c4486e6 | 696 | |
c906108c SS |
697 | ERROR_NO_INFERIOR; |
698 | ||
1777feb0 | 699 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
700 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
701 | args = stripped.get (); | |
43ff13b4 | 702 | |
8cae4b3f PA |
703 | if (args != NULL) |
704 | { | |
61012eef | 705 | if (startswith (args, "-a")) |
8cae4b3f | 706 | { |
5b6d1e4f | 707 | all_threads_p = true; |
8cae4b3f PA |
708 | args += sizeof ("-a") - 1; |
709 | if (*args == '\0') | |
710 | args = NULL; | |
711 | } | |
712 | } | |
713 | ||
5b6d1e4f | 714 | if (!non_stop && all_threads_p) |
8cae4b3f PA |
715 | error (_("`-a' is meaningless in all-stop mode.")); |
716 | ||
5b6d1e4f | 717 | if (args != NULL && all_threads_p) |
3e43a32a MS |
718 | error (_("Can't resume all threads and specify " |
719 | "proceed count simultaneously.")); | |
8cae4b3f PA |
720 | |
721 | /* If we have an argument left, set proceed count of breakpoint we | |
722 | stopped at. */ | |
723 | if (args != NULL) | |
c906108c | 724 | { |
347bddb7 | 725 | bpstat bs = NULL; |
8671a17b PA |
726 | int num, stat; |
727 | int stopped = 0; | |
347bddb7 PA |
728 | struct thread_info *tp; |
729 | ||
730 | if (non_stop) | |
00431a78 | 731 | tp = inferior_thread (); |
347bddb7 PA |
732 | else |
733 | { | |
5b6d1e4f | 734 | process_stratum_target *last_target; |
347bddb7 | 735 | ptid_t last_ptid; |
347bddb7 | 736 | |
5b6d1e4f PA |
737 | get_last_target_status (&last_target, &last_ptid, nullptr); |
738 | tp = find_thread_ptid (last_target, last_ptid); | |
347bddb7 PA |
739 | } |
740 | if (tp != NULL) | |
16c381f0 | 741 | bs = tp->control.stop_bpstat; |
8671a17b PA |
742 | |
743 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
744 | if (stat > 0) | |
745 | { | |
746 | set_ignore_count (num, | |
8cae4b3f | 747 | parse_and_eval_long (args) - 1, |
8671a17b PA |
748 | from_tty); |
749 | /* set_ignore_count prints a message ending with a period. | |
750 | So print two spaces before "Continuing.". */ | |
751 | if (from_tty) | |
752 | printf_filtered (" "); | |
753 | stopped = 1; | |
754 | } | |
755 | ||
756 | if (!stopped && from_tty) | |
c906108c SS |
757 | { |
758 | printf_filtered | |
759 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
760 | } | |
c906108c SS |
761 | } |
762 | ||
3b12939d PA |
763 | ERROR_NO_INFERIOR; |
764 | ensure_not_tfind_mode (); | |
765 | ||
5b6d1e4f | 766 | if (!non_stop || !all_threads_p) |
3b12939d PA |
767 | { |
768 | ensure_valid_thread (); | |
769 | ensure_not_running (); | |
770 | } | |
771 | ||
328d42d8 | 772 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
3b12939d | 773 | |
c906108c | 774 | if (from_tty) |
a3f17187 | 775 | printf_filtered (_("Continuing.\n")); |
c906108c | 776 | |
5b6d1e4f | 777 | continue_1 (all_threads_p); |
c906108c SS |
778 | } |
779 | \f | |
29734269 | 780 | /* Record in TP the starting point of a "step" or "next" command. */ |
edb3359d DJ |
781 | |
782 | static void | |
29734269 | 783 | set_step_frame (thread_info *tp) |
edb3359d | 784 | { |
29734269 SM |
785 | /* This can be removed once this function no longer implicitly relies on the |
786 | inferior_ptid value. */ | |
787 | gdb_assert (inferior_ptid == tp->ptid); | |
788 | ||
51abb421 | 789 | frame_info *frame = get_current_frame (); |
edb3359d | 790 | |
51abb421 | 791 | symtab_and_line sal = find_frame_sal (frame); |
29734269 | 792 | set_step_info (tp, frame, sal); |
51abb421 PA |
793 | |
794 | CORE_ADDR pc = get_frame_pc (frame); | |
64ce06e4 | 795 | tp->control.step_start_function = find_pc_function (pc); |
edb3359d DJ |
796 | } |
797 | ||
c906108c SS |
798 | /* Step until outside of current statement. */ |
799 | ||
c906108c | 800 | static void |
0b39b52e | 801 | step_command (const char *count_string, int from_tty) |
c906108c SS |
802 | { |
803 | step_1 (0, 0, count_string); | |
804 | } | |
805 | ||
806 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
807 | ||
c906108c | 808 | static void |
0b39b52e | 809 | next_command (const char *count_string, int from_tty) |
c906108c SS |
810 | { |
811 | step_1 (1, 0, count_string); | |
812 | } | |
813 | ||
814 | /* Likewise, but step only one instruction. */ | |
815 | ||
1dd5fedc | 816 | static void |
0b39b52e | 817 | stepi_command (const char *count_string, int from_tty) |
c906108c SS |
818 | { |
819 | step_1 (0, 1, count_string); | |
820 | } | |
821 | ||
1dd5fedc | 822 | static void |
0b39b52e | 823 | nexti_command (const char *count_string, int from_tty) |
c906108c SS |
824 | { |
825 | step_1 (1, 1, count_string); | |
826 | } | |
827 | ||
243a9253 PA |
828 | /* Data for the FSM that manages the step/next/stepi/nexti |
829 | commands. */ | |
830 | ||
46e3ed7f | 831 | struct step_command_fsm : public thread_fsm |
243a9253 | 832 | { |
243a9253 PA |
833 | /* How many steps left in a "step N"-like command. */ |
834 | int count; | |
835 | ||
836 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
837 | int skip_subroutines; | |
838 | ||
839 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
840 | int single_inst; | |
243a9253 | 841 | |
46e3ed7f TT |
842 | explicit step_command_fsm (struct interp *cmd_interp) |
843 | : thread_fsm (cmd_interp) | |
844 | { | |
845 | } | |
243a9253 | 846 | |
46e3ed7f TT |
847 | void clean_up (struct thread_info *thread) override; |
848 | bool should_stop (struct thread_info *thread) override; | |
849 | enum async_reply_reason do_async_reply_reason () override; | |
243a9253 PA |
850 | }; |
851 | ||
243a9253 PA |
852 | /* Prepare for a step/next/etc. command. Any target resource |
853 | allocated here is undone in the FSM's clean_up method. */ | |
854 | ||
855 | static void | |
856 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
857 | int skip_subroutines, int single_inst, | |
858 | int count, struct thread_info *thread) | |
859 | { | |
860 | sm->skip_subroutines = skip_subroutines; | |
861 | sm->single_inst = single_inst; | |
862 | sm->count = count; | |
243a9253 PA |
863 | |
864 | /* Leave the si command alone. */ | |
865 | if (!sm->single_inst || sm->skip_subroutines) | |
866 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
867 | ||
868 | thread->control.stepping_command = 1; | |
869 | } | |
870 | ||
29734269 | 871 | static int prepare_one_step (thread_info *, struct step_command_fsm *sm); |
243a9253 | 872 | |
c906108c | 873 | static void |
0b39b52e | 874 | step_1 (int skip_subroutines, int single_inst, const char *count_string) |
c906108c | 875 | { |
243a9253 | 876 | int count; |
6c4486e6 | 877 | int async_exec; |
243a9253 PA |
878 | struct thread_info *thr; |
879 | struct step_command_fsm *step_sm; | |
c5aa993b | 880 | |
c906108c | 881 | ERROR_NO_INFERIOR; |
573cda03 | 882 | ensure_not_tfind_mode (); |
d729566a | 883 | ensure_valid_thread (); |
94cc34af | 884 | ensure_not_running (); |
43ff13b4 | 885 | |
6be9a197 TT |
886 | gdb::unique_xmalloc_ptr<char> stripped |
887 | = strip_bg_char (count_string, &async_exec); | |
888 | count_string = stripped.get (); | |
c5aa993b | 889 | |
328d42d8 | 890 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 891 | |
bb518678 | 892 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 893 | |
243a9253 | 894 | clear_proceed_status (1); |
611c83ae | 895 | |
243a9253 PA |
896 | /* Setup the execution command state machine to handle all the COUNT |
897 | steps. */ | |
898 | thr = inferior_thread (); | |
46e3ed7f TT |
899 | step_sm = new step_command_fsm (command_interp ()); |
900 | thr->thread_fsm = step_sm; | |
611c83ae | 901 | |
243a9253 PA |
902 | step_command_fsm_prepare (step_sm, skip_subroutines, |
903 | single_inst, count, thr); | |
c2d11a7d | 904 | |
0b333c5e PA |
905 | /* Do only one step for now, before returning control to the event |
906 | loop. Let the continuation figure out how many other steps we | |
907 | need to do, and handle them one at the time, through | |
908 | step_once. */ | |
29734269 | 909 | if (!prepare_one_step (thr, step_sm)) |
243a9253 PA |
910 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
911 | else | |
912 | { | |
3b12939d PA |
913 | int proceeded; |
914 | ||
243a9253 PA |
915 | /* Stepped into an inline frame. Pretend that we've |
916 | stopped. */ | |
46e3ed7f | 917 | thr->thread_fsm->clean_up (thr); |
3b12939d PA |
918 | proceeded = normal_stop (); |
919 | if (!proceeded) | |
b1a35af2 | 920 | inferior_event_handler (INF_EXEC_COMPLETE); |
3b12939d | 921 | all_uis_check_sync_execution_done (); |
243a9253 | 922 | } |
c2d11a7d | 923 | } |
c906108c | 924 | |
243a9253 PA |
925 | /* Implementation of the 'should_stop' FSM method for stepping |
926 | commands. Called after we are done with one step operation, to | |
927 | check whether we need to step again, before we print the prompt and | |
928 | return control to the user. If count is > 1, returns false, as we | |
929 | will need to keep going. */ | |
6339bfc4 | 930 | |
46e3ed7f TT |
931 | bool |
932 | step_command_fsm::should_stop (struct thread_info *tp) | |
c2d11a7d | 933 | { |
243a9253 | 934 | if (tp->control.stop_step) |
f13468d9 | 935 | { |
243a9253 PA |
936 | /* There are more steps to make, and we did stop due to |
937 | ending a stepping range. Do another step. */ | |
46e3ed7f | 938 | if (--count > 0) |
29734269 | 939 | return prepare_one_step (tp, this); |
af679fd0 | 940 | |
46e3ed7f | 941 | set_finished (); |
f107f563 | 942 | } |
af679fd0 | 943 | |
46e3ed7f | 944 | return true; |
c2d11a7d JM |
945 | } |
946 | ||
243a9253 | 947 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 | 948 | |
46e3ed7f TT |
949 | void |
950 | step_command_fsm::clean_up (struct thread_info *thread) | |
bfec99b2 | 951 | { |
46e3ed7f | 952 | if (!single_inst || skip_subroutines) |
8980e177 | 953 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 PA |
954 | } |
955 | ||
956 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
957 | commands. */ | |
958 | ||
46e3ed7f TT |
959 | enum async_reply_reason |
960 | step_command_fsm::do_async_reply_reason () | |
243a9253 PA |
961 | { |
962 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
963 | } | |
964 | ||
965 | /* Prepare for one step in "step N". The actual target resumption is | |
966 | done by the caller. Return true if we're done and should thus | |
967 | report a stop to the user. Returns false if the target needs to be | |
968 | resumed. */ | |
c2d11a7d | 969 | |
243a9253 | 970 | static int |
29734269 | 971 | prepare_one_step (thread_info *tp, struct step_command_fsm *sm) |
243a9253 | 972 | { |
29734269 SM |
973 | /* This can be removed once this function no longer implicitly relies on the |
974 | inferior_ptid value. */ | |
975 | gdb_assert (inferior_ptid == tp->ptid); | |
976 | ||
243a9253 | 977 | if (sm->count > 0) |
c906108c | 978 | { |
243a9253 PA |
979 | struct frame_info *frame = get_current_frame (); |
980 | ||
29734269 | 981 | set_step_frame (tp); |
c906108c | 982 | |
243a9253 | 983 | if (!sm->single_inst) |
c906108c | 984 | { |
1641cfcc PA |
985 | CORE_ADDR pc; |
986 | ||
edb3359d | 987 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 988 | if (!sm->skip_subroutines |
00431a78 | 989 | && inline_skipped_frames (tp)) |
edb3359d | 990 | { |
09cee04b | 991 | ptid_t resume_ptid; |
4a4c04f1 BE |
992 | const char *fn = NULL; |
993 | symtab_and_line sal; | |
994 | struct symbol *sym; | |
09cee04b PA |
995 | |
996 | /* Pretend that we've ran. */ | |
997 | resume_ptid = user_visible_resume_ptid (1); | |
5b6d1e4f | 998 | set_running (tp->inf->process_target (), resume_ptid, true); |
09cee04b | 999 | |
00431a78 | 1000 | step_into_inline_frame (tp); |
4a4c04f1 BE |
1001 | |
1002 | frame = get_current_frame (); | |
1003 | sal = find_frame_sal (frame); | |
1004 | sym = get_frame_function (frame); | |
1005 | ||
1006 | if (sym != NULL) | |
1007 | fn = sym->print_name (); | |
1008 | ||
1009 | if (sal.line == 0 | |
1010 | || !function_name_is_marked_for_skip (fn, sal)) | |
1011 | { | |
1012 | sm->count--; | |
29734269 | 1013 | return prepare_one_step (tp, sm); |
4a4c04f1 | 1014 | } |
edb3359d DJ |
1015 | } |
1016 | ||
1641cfcc PA |
1017 | pc = get_frame_pc (frame); |
1018 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
1019 | &tp->control.step_range_start, |
1020 | &tp->control.step_range_end); | |
5fbbeb29 | 1021 | |
340d00fb TV |
1022 | /* There's a problem in gcc (PR gcc/98780) that causes missing line |
1023 | table entries, which results in a too large stepping range. | |
1024 | Use inlined_subroutine info to make the range more narrow. */ | |
1025 | if (inline_skipped_frames (tp) > 0) | |
1026 | { | |
1027 | symbol *sym = inline_skipped_symbol (tp); | |
1028 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1029 | { | |
1030 | const block *block = SYMBOL_BLOCK_VALUE (sym); | |
1031 | if (BLOCK_END (block) < tp->control.step_range_end) | |
1032 | tp->control.step_range_end = BLOCK_END (block); | |
1033 | } | |
1034 | } | |
1035 | ||
c1e36e3e PA |
1036 | tp->control.may_range_step = 1; |
1037 | ||
5fbbeb29 | 1038 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 1039 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
1040 | { |
1041 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1042 | tp->control.may_range_step = 0; | |
1043 | } | |
16c381f0 | 1044 | else if (tp->control.step_range_end == 0) |
c906108c | 1045 | { |
2c02bd72 | 1046 | const char *name; |
abbb1732 | 1047 | |
1641cfcc | 1048 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
1049 | &tp->control.step_range_start, |
1050 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 1051 | error (_("Cannot find bounds of current function")); |
c906108c | 1052 | |
223ffa71 | 1053 | target_terminal::ours_for_output (); |
3e43a32a MS |
1054 | printf_filtered (_("Single stepping until exit from function %s," |
1055 | "\nwhich has no line number information.\n"), | |
1056 | name); | |
c906108c SS |
1057 | } |
1058 | } | |
1059 | else | |
1060 | { | |
1061 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1062 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1063 | if (!sm->skip_subroutines) |
c906108c SS |
1064 | /* It is stepi. |
1065 | Don't step over function calls, not even to functions lacking | |
1066 | line numbers. */ | |
16c381f0 | 1067 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1068 | } |
1069 | ||
243a9253 | 1070 | if (sm->skip_subroutines) |
16c381f0 | 1071 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1072 | |
243a9253 | 1073 | return 0; |
c906108c | 1074 | } |
243a9253 PA |
1075 | |
1076 | /* Done. */ | |
46e3ed7f | 1077 | sm->set_finished (); |
243a9253 | 1078 | return 1; |
c906108c | 1079 | } |
c2d11a7d | 1080 | |
c906108c SS |
1081 | \f |
1082 | /* Continue program at specified address. */ | |
1083 | ||
1084 | static void | |
0b39b52e | 1085 | jump_command (const char *arg, int from_tty) |
c906108c | 1086 | { |
5af949e3 | 1087 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1088 | CORE_ADDR addr; |
c906108c SS |
1089 | struct symbol *fn; |
1090 | struct symbol *sfn; | |
6c4486e6 | 1091 | int async_exec; |
c5aa993b | 1092 | |
c906108c | 1093 | ERROR_NO_INFERIOR; |
573cda03 | 1094 | ensure_not_tfind_mode (); |
d729566a | 1095 | ensure_valid_thread (); |
94cc34af | 1096 | ensure_not_running (); |
c906108c | 1097 | |
1777feb0 | 1098 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1099 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1100 | arg = stripped.get (); | |
43ff13b4 | 1101 | |
328d42d8 | 1102 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1103 | |
c906108c | 1104 | if (!arg) |
e2e0b3e5 | 1105 | error_no_arg (_("starting address")); |
c906108c | 1106 | |
6c5b2ebe PA |
1107 | std::vector<symtab_and_line> sals |
1108 | = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); | |
1109 | if (sals.size () != 1) | |
1110 | error (_("Unreasonable jump request")); | |
c906108c | 1111 | |
6c5b2ebe PA |
1112 | symtab_and_line &sal = sals[0]; |
1113 | ||
c906108c | 1114 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1115 | error (_("No source file has been specified.")); |
c906108c | 1116 | |
1777feb0 | 1117 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1118 | |
1777feb0 | 1119 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1120 | fn = get_frame_function (get_current_frame ()); |
1121 | sfn = find_pc_function (sal.pc); | |
1122 | if (fn != NULL && sfn != fn) | |
1123 | { | |
9e2f0ad4 | 1124 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
987012b8 | 1125 | fn->print_name ())) |
c906108c | 1126 | { |
8a3fe4f8 | 1127 | error (_("Not confirmed.")); |
c906108c SS |
1128 | /* NOTREACHED */ |
1129 | } | |
1130 | } | |
1131 | ||
c5aa993b | 1132 | if (sfn != NULL) |
c906108c | 1133 | { |
253342b8 DE |
1134 | struct obj_section *section; |
1135 | ||
c906108c | 1136 | fixup_symbol_section (sfn, 0); |
ebbc3a7d | 1137 | section = sfn->obj_section (symbol_objfile (sfn)); |
253342b8 DE |
1138 | if (section_is_overlay (section) |
1139 | && !section_is_mapped (section)) | |
c906108c | 1140 | { |
3e43a32a MS |
1141 | if (!query (_("WARNING!!! Destination is in " |
1142 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1143 | { |
8a3fe4f8 | 1144 | error (_("Not confirmed.")); |
c906108c SS |
1145 | /* NOTREACHED */ |
1146 | } | |
1147 | } | |
1148 | } | |
1149 | ||
c906108c SS |
1150 | addr = sal.pc; |
1151 | ||
1152 | if (from_tty) | |
1153 | { | |
a3f17187 | 1154 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1155 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1156 | printf_filtered (".\n"); |
1157 | } | |
1158 | ||
70509625 | 1159 | clear_proceed_status (0); |
64ce06e4 | 1160 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1161 | } |
c906108c | 1162 | \f |
c906108c SS |
1163 | /* Continue program giving it specified signal. */ |
1164 | ||
1165 | static void | |
0b39b52e | 1166 | signal_command (const char *signum_exp, int from_tty) |
c906108c | 1167 | { |
2ea28649 | 1168 | enum gdb_signal oursig; |
6c4486e6 | 1169 | int async_exec; |
c906108c SS |
1170 | |
1171 | dont_repeat (); /* Too dangerous. */ | |
1172 | ERROR_NO_INFERIOR; | |
573cda03 | 1173 | ensure_not_tfind_mode (); |
d729566a | 1174 | ensure_valid_thread (); |
94cc34af | 1175 | ensure_not_running (); |
c906108c | 1176 | |
32c1e744 | 1177 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1178 | gdb::unique_xmalloc_ptr<char> stripped |
1179 | = strip_bg_char (signum_exp, &async_exec); | |
1180 | signum_exp = stripped.get (); | |
32c1e744 | 1181 | |
328d42d8 | 1182 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
32c1e744 | 1183 | |
c906108c | 1184 | if (!signum_exp) |
e2e0b3e5 | 1185 | error_no_arg (_("signal number")); |
c906108c SS |
1186 | |
1187 | /* It would be even slicker to make signal names be valid expressions, | |
1188 | (the type could be "enum $signal" or some such), then the user could | |
1189 | assign them to convenience variables. */ | |
2ea28649 | 1190 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1191 | |
a493e3e2 | 1192 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1193 | { |
1194 | /* No, try numeric. */ | |
bb518678 | 1195 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1196 | |
1197 | if (num == 0) | |
a493e3e2 | 1198 | oursig = GDB_SIGNAL_0; |
c906108c | 1199 | else |
2ea28649 | 1200 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1201 | } |
1202 | ||
70509625 PA |
1203 | /* Look for threads other than the current that this command ends up |
1204 | resuming too (due to schedlock off), and warn if they'll get a | |
1205 | signal delivered. "signal 0" is used to suppress a previous | |
1206 | signal, but if the current thread is no longer the one that got | |
1207 | the signal, then the user is potentially suppressing the signal | |
1208 | of the wrong thread. */ | |
1209 | if (!non_stop) | |
1210 | { | |
70509625 PA |
1211 | int must_confirm = 0; |
1212 | ||
1213 | /* This indicates what will be resumed. Either a single thread, | |
1214 | a whole process, or all threads of all processes. */ | |
08036331 | 1215 | ptid_t resume_ptid = user_visible_resume_ptid (0); |
5b6d1e4f PA |
1216 | process_stratum_target *resume_target |
1217 | = user_visible_resume_target (resume_ptid); | |
70509625 | 1218 | |
5b6d1e4f PA |
1219 | thread_info *current = inferior_thread (); |
1220 | ||
1221 | for (thread_info *tp : all_non_exited_threads (resume_target, resume_ptid)) | |
70509625 | 1222 | { |
5b6d1e4f | 1223 | if (tp == current) |
70509625 | 1224 | continue; |
70509625 PA |
1225 | |
1226 | if (tp->suspend.stop_signal != GDB_SIGNAL_0 | |
1227 | && signal_pass_state (tp->suspend.stop_signal)) | |
1228 | { | |
1229 | if (!must_confirm) | |
1230 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1231 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1232 | print_thread_id (tp), | |
70509625 PA |
1233 | gdb_signal_to_name (tp->suspend.stop_signal), |
1234 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
1235 | must_confirm = 1; | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | if (must_confirm | |
43792cf0 | 1240 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1241 | "still deliver the signals noted above to their respective threads.\n" |
1242 | "Continue anyway? "), | |
43792cf0 | 1243 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1244 | error (_("Not confirmed.")); |
1245 | } | |
1246 | ||
c906108c SS |
1247 | if (from_tty) |
1248 | { | |
a493e3e2 | 1249 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1250 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1251 | else |
a3f17187 | 1252 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1253 | gdb_signal_to_name (oursig)); |
c906108c SS |
1254 | } |
1255 | ||
70509625 | 1256 | clear_proceed_status (0); |
64ce06e4 | 1257 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1258 | } |
1259 | ||
81219e53 DE |
1260 | /* Queue a signal to be delivered to the current thread. */ |
1261 | ||
1262 | static void | |
0b39b52e | 1263 | queue_signal_command (const char *signum_exp, int from_tty) |
81219e53 DE |
1264 | { |
1265 | enum gdb_signal oursig; | |
1266 | struct thread_info *tp; | |
1267 | ||
1268 | ERROR_NO_INFERIOR; | |
1269 | ensure_not_tfind_mode (); | |
1270 | ensure_valid_thread (); | |
1271 | ensure_not_running (); | |
1272 | ||
1273 | if (signum_exp == NULL) | |
1274 | error_no_arg (_("signal number")); | |
1275 | ||
1276 | /* It would be even slicker to make signal names be valid expressions, | |
1277 | (the type could be "enum $signal" or some such), then the user could | |
1278 | assign them to convenience variables. */ | |
1279 | oursig = gdb_signal_from_name (signum_exp); | |
1280 | ||
1281 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1282 | { | |
1283 | /* No, try numeric. */ | |
1284 | int num = parse_and_eval_long (signum_exp); | |
1285 | ||
1286 | if (num == 0) | |
1287 | oursig = GDB_SIGNAL_0; | |
1288 | else | |
1289 | oursig = gdb_signal_from_command (num); | |
1290 | } | |
1291 | ||
1292 | if (oursig != GDB_SIGNAL_0 | |
1293 | && !signal_pass_state (oursig)) | |
1294 | error (_("Signal handling set to not pass this signal to the program.")); | |
1295 | ||
1296 | tp = inferior_thread (); | |
1297 | tp->suspend.stop_signal = oursig; | |
1298 | } | |
1299 | ||
cfc31633 PA |
1300 | /* Data for the FSM that manages the until (with no argument) |
1301 | command. */ | |
1302 | ||
46e3ed7f | 1303 | struct until_next_fsm : public thread_fsm |
fa4cd53f | 1304 | { |
cfc31633 | 1305 | /* The thread that as current when the command was executed. */ |
fa4cd53f | 1306 | int thread; |
cfc31633 | 1307 | |
46e3ed7f TT |
1308 | until_next_fsm (struct interp *cmd_interp, int thread) |
1309 | : thread_fsm (cmd_interp), | |
1310 | thread (thread) | |
1311 | { | |
1312 | } | |
cfc31633 | 1313 | |
46e3ed7f TT |
1314 | bool should_stop (struct thread_info *thread) override; |
1315 | void clean_up (struct thread_info *thread) override; | |
1316 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
1317 | }; |
1318 | ||
cfc31633 PA |
1319 | /* Implementation of the 'should_stop' FSM method for the until (with |
1320 | no arg) command. */ | |
1321 | ||
46e3ed7f TT |
1322 | bool |
1323 | until_next_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 1324 | { |
cfc31633 | 1325 | if (tp->control.stop_step) |
46e3ed7f | 1326 | set_finished (); |
cfc31633 | 1327 | |
46e3ed7f | 1328 | return true; |
cfc31633 PA |
1329 | } |
1330 | ||
1331 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1332 | arg) command. */ | |
186c406b | 1333 | |
46e3ed7f TT |
1334 | void |
1335 | until_next_fsm::clean_up (struct thread_info *thread) | |
186c406b | 1336 | { |
8980e177 | 1337 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1338 | } |
1339 | ||
1340 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1341 | (with no arg) command. */ | |
1342 | ||
46e3ed7f TT |
1343 | enum async_reply_reason |
1344 | until_next_fsm::do_async_reply_reason () | |
cfc31633 PA |
1345 | { |
1346 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1347 | } |
1348 | ||
c906108c SS |
1349 | /* Proceed until we reach a different source line with pc greater than |
1350 | our current one or exit the function. We skip calls in both cases. | |
1351 | ||
1352 | Note that eventually this command should probably be changed so | |
1353 | that only source lines are printed out when we hit the breakpoint | |
1354 | we set. This may involve changes to wait_for_inferior and the | |
1355 | proceed status code. */ | |
1356 | ||
c906108c | 1357 | static void |
fba45db2 | 1358 | until_next_command (int from_tty) |
c906108c SS |
1359 | { |
1360 | struct frame_info *frame; | |
1361 | CORE_ADDR pc; | |
1362 | struct symbol *func; | |
1363 | struct symtab_and_line sal; | |
4e1c45ea | 1364 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1365 | int thread = tp->global_num; |
cfc31633 | 1366 | struct until_next_fsm *sm; |
c5aa993b | 1367 | |
70509625 | 1368 | clear_proceed_status (0); |
29734269 | 1369 | set_step_frame (tp); |
c906108c SS |
1370 | |
1371 | frame = get_current_frame (); | |
1372 | ||
1373 | /* Step until either exited from this function or greater | |
1374 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1375 | not). */ |
c906108c | 1376 | |
1c7819ef | 1377 | pc = get_frame_pc (frame); |
c906108c | 1378 | func = find_pc_function (pc); |
c5aa993b | 1379 | |
c906108c SS |
1380 | if (!func) |
1381 | { | |
7cbd4a93 | 1382 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1383 | |
7cbd4a93 | 1384 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1385 | error (_("Execution is not within a known function.")); |
c5aa993b | 1386 | |
77e371c0 | 1387 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1388 | /* The upper-bound of step_range is exclusive. In order to make PC |
1389 | within the range, set the step_range_end with PC + 1. */ | |
1390 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1391 | } |
1392 | else | |
1393 | { | |
1394 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1395 | |
2b1ffcfd | 1396 | tp->control.step_range_start = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (func)); |
16c381f0 | 1397 | tp->control.step_range_end = sal.end; |
c906108c | 1398 | } |
c1e36e3e | 1399 | tp->control.may_range_step = 1; |
c5aa993b | 1400 | |
16c381f0 | 1401 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1402 | |
186c406b | 1403 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
5419bdae | 1404 | delete_longjmp_breakpoint_cleanup lj_deleter (thread); |
186c406b | 1405 | |
46e3ed7f TT |
1406 | sm = new until_next_fsm (command_interp (), tp->global_num); |
1407 | tp->thread_fsm = sm; | |
5419bdae | 1408 | lj_deleter.release (); |
fa4cd53f | 1409 | |
cfc31633 | 1410 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1411 | } |
1412 | ||
c5aa993b | 1413 | static void |
0b39b52e | 1414 | until_command (const char *arg, int from_tty) |
c906108c | 1415 | { |
6c4486e6 | 1416 | int async_exec; |
43ff13b4 | 1417 | |
4247603b | 1418 | ERROR_NO_INFERIOR; |
573cda03 | 1419 | ensure_not_tfind_mode (); |
4247603b PA |
1420 | ensure_valid_thread (); |
1421 | ensure_not_running (); | |
573cda03 | 1422 | |
1777feb0 | 1423 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1424 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1425 | arg = stripped.get (); | |
43ff13b4 | 1426 | |
328d42d8 | 1427 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1428 | |
c906108c | 1429 | if (arg) |
ae66c1fc | 1430 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1431 | else |
1432 | until_next_command (from_tty); | |
1433 | } | |
ae66c1fc EZ |
1434 | |
1435 | static void | |
0b39b52e | 1436 | advance_command (const char *arg, int from_tty) |
ae66c1fc | 1437 | { |
6c4486e6 | 1438 | int async_exec; |
ae66c1fc | 1439 | |
4247603b | 1440 | ERROR_NO_INFERIOR; |
573cda03 | 1441 | ensure_not_tfind_mode (); |
4247603b PA |
1442 | ensure_valid_thread (); |
1443 | ensure_not_running (); | |
573cda03 | 1444 | |
ae66c1fc | 1445 | if (arg == NULL) |
e2e0b3e5 | 1446 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1447 | |
1448 | /* Find out whether we must run in the background. */ | |
6be9a197 TT |
1449 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1450 | arg = stripped.get (); | |
ae66c1fc | 1451 | |
328d42d8 | 1452 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
ae66c1fc EZ |
1453 | |
1454 | until_break_command (arg, from_tty, 1); | |
1455 | } | |
c906108c | 1456 | \f |
cc72b2a2 | 1457 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1458 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1459 | right after an inferior call has finished. */ | |
f941662f | 1460 | |
cc72b2a2 | 1461 | struct value * |
0700e23e | 1462 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1463 | { |
215c69dc YQ |
1464 | regcache *stop_regs = get_current_regcache (); |
1465 | struct gdbarch *gdbarch = stop_regs->arch (); | |
44e5158b AC |
1466 | struct value *value; |
1467 | ||
f168693b | 1468 | value_type = check_typedef (value_type); |
78134374 | 1469 | gdb_assert (value_type->code () != TYPE_CODE_VOID); |
11cf8741 | 1470 | |
92ad9cd9 AC |
1471 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1472 | call, it's possible (with no help from the architecture vector) | |
1473 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1474 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1475 | inferior function call code. In fact, when inferior function |
1476 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1477 | |
6a3a010b | 1478 | switch (gdbarch_return_value (gdbarch, function, value_type, |
24b21115 | 1479 | NULL, NULL, NULL)) |
44e5158b | 1480 | { |
750eb019 AC |
1481 | case RETURN_VALUE_REGISTER_CONVENTION: |
1482 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1483 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1484 | value = allocate_value (value_type); |
215c69dc | 1485 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
990a07ab | 1486 | value_contents_raw (value), NULL); |
750eb019 AC |
1487 | break; |
1488 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1489 | value = NULL; | |
1490 | break; | |
1491 | default: | |
e2e0b3e5 | 1492 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1493 | } |
bb472c1e | 1494 | |
cc72b2a2 KP |
1495 | return value; |
1496 | } | |
1497 | ||
243a9253 PA |
1498 | /* The captured function return value/type and its position in the |
1499 | value history. */ | |
cc72b2a2 | 1500 | |
243a9253 | 1501 | struct return_value_info |
cc72b2a2 | 1502 | { |
243a9253 PA |
1503 | /* The captured return value. May be NULL if we weren't able to |
1504 | retrieve it. See get_return_value. */ | |
1505 | struct value *value; | |
1506 | ||
1507 | /* The return type. In some cases, we'll not be able extract the | |
1508 | return value, but we always know the type. */ | |
1509 | struct type *type; | |
1510 | ||
1511 | /* If we captured a value, this is the value history index. */ | |
1512 | int value_history_index; | |
1513 | }; | |
1514 | ||
1515 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1516 | |
243a9253 PA |
1517 | static void |
1518 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1519 | { | |
1520 | if (rv->value != NULL) | |
31db7b6c | 1521 | { |
79a45b7d TT |
1522 | struct value_print_options opts; |
1523 | ||
31db7b6c | 1524 | /* Print it. */ |
112e8700 SM |
1525 | uiout->text ("Value returned is "); |
1526 | uiout->field_fmt ("gdb-result-var", "$%d", | |
d7e74731 | 1527 | rv->value_history_index); |
112e8700 | 1528 | uiout->text (" = "); |
5d9a0608 | 1529 | get_user_print_options (&opts); |
d7e74731 | 1530 | |
000439d5 TT |
1531 | if (opts.finish_print) |
1532 | { | |
1533 | string_file stb; | |
1534 | value_print (rv->value, &stb, &opts); | |
1535 | uiout->field_stream ("return-value", stb); | |
1536 | } | |
1537 | else | |
7f6aba03 TT |
1538 | uiout->field_string ("return-value", _("<not displayed>"), |
1539 | metadata_style.style ()); | |
112e8700 | 1540 | uiout->text ("\n"); |
31db7b6c MK |
1541 | } |
1542 | else | |
1543 | { | |
2f408ecb | 1544 | std::string type_name = type_to_string (rv->type); |
112e8700 | 1545 | uiout->text ("Value returned has type: "); |
8dd8c8d4 | 1546 | uiout->field_string ("return-type", type_name); |
112e8700 SM |
1547 | uiout->text ("."); |
1548 | uiout->text (" Cannot determine contents\n"); | |
31db7b6c | 1549 | } |
11cf8741 JM |
1550 | } |
1551 | ||
243a9253 PA |
1552 | /* Print the result of a function at the end of a 'finish' command. |
1553 | RV points at an object representing the captured return value/type | |
1554 | and its position in the value history. */ | |
1555 | ||
1556 | void | |
1557 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1558 | { | |
f097f5ad | 1559 | if (rv->type == NULL |
78134374 | 1560 | || check_typedef (rv->type)->code () == TYPE_CODE_VOID) |
243a9253 PA |
1561 | return; |
1562 | ||
a70b8144 | 1563 | try |
243a9253 PA |
1564 | { |
1565 | /* print_return_value_1 can throw an exception in some | |
1566 | circumstances. We need to catch this so that we still | |
1567 | delete the breakpoint. */ | |
1568 | print_return_value_1 (uiout, rv); | |
1569 | } | |
230d2906 | 1570 | catch (const gdb_exception &ex) |
243a9253 PA |
1571 | { |
1572 | exception_print (gdb_stdout, ex); | |
1573 | } | |
243a9253 PA |
1574 | } |
1575 | ||
1576 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1577 | |
46e3ed7f | 1578 | struct finish_command_fsm : public thread_fsm |
43ff13b4 | 1579 | { |
243a9253 PA |
1580 | /* The momentary breakpoint set at the function's return address in |
1581 | the caller. */ | |
46e3ed7f | 1582 | breakpoint_up breakpoint; |
243a9253 PA |
1583 | |
1584 | /* The function that we're stepping out of. */ | |
46e3ed7f | 1585 | struct symbol *function = nullptr; |
8a6c4031 | 1586 | |
243a9253 PA |
1587 | /* If the FSM finishes successfully, this stores the function's |
1588 | return value. */ | |
46e3ed7f | 1589 | struct return_value_info return_value_info {}; |
c5aa993b | 1590 | |
46e3ed7f TT |
1591 | explicit finish_command_fsm (struct interp *cmd_interp) |
1592 | : thread_fsm (cmd_interp) | |
1593 | { | |
1594 | } | |
243a9253 | 1595 | |
46e3ed7f TT |
1596 | bool should_stop (struct thread_info *thread) override; |
1597 | void clean_up (struct thread_info *thread) override; | |
1598 | struct return_value_info *return_value () override; | |
1599 | enum async_reply_reason do_async_reply_reason () override; | |
1600 | }; | |
347bddb7 | 1601 | |
243a9253 PA |
1602 | /* Implementation of the 'should_stop' FSM method for the finish |
1603 | commands. Detects whether the thread stepped out of the function | |
1604 | successfully, and if so, captures the function's return value and | |
1605 | marks the FSM finished. */ | |
1606 | ||
46e3ed7f TT |
1607 | bool |
1608 | finish_command_fsm::should_stop (struct thread_info *tp) | |
243a9253 | 1609 | { |
46e3ed7f | 1610 | struct return_value_info *rv = &return_value_info; |
243a9253 | 1611 | |
46e3ed7f | 1612 | if (function != NULL |
243a9253 | 1613 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f | 1614 | breakpoint.get ()) != NULL) |
43ff13b4 | 1615 | { |
243a9253 | 1616 | /* We're done. */ |
46e3ed7f | 1617 | set_finished (); |
bfec99b2 | 1618 | |
46e3ed7f | 1619 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); |
243a9253 PA |
1620 | if (rv->type == NULL) |
1621 | internal_error (__FILE__, __LINE__, | |
1622 | _("finish_command: function has no target type")); | |
f5871ec0 | 1623 | |
78134374 | 1624 | if (check_typedef (rv->type)->code () != TYPE_CODE_VOID) |
40c549d6 | 1625 | { |
243a9253 PA |
1626 | struct value *func; |
1627 | ||
46e3ed7f | 1628 | func = read_var_value (function, NULL, get_current_frame ()); |
0700e23e | 1629 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1630 | if (rv->value != NULL) |
1631 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1632 | } |
1633 | } | |
1634 | else if (tp->control.stop_step) | |
1635 | { | |
1636 | /* Finishing from an inline frame, or reverse finishing. In | |
1637 | either case, there's no way to retrieve the return value. */ | |
46e3ed7f | 1638 | set_finished (); |
243a9253 | 1639 | } |
fa4cd53f | 1640 | |
46e3ed7f | 1641 | return true; |
243a9253 | 1642 | } |
40c549d6 | 1643 | |
243a9253 PA |
1644 | /* Implementation of the 'clean_up' FSM method for the finish |
1645 | commands. */ | |
fa4cd53f | 1646 | |
46e3ed7f TT |
1647 | void |
1648 | finish_command_fsm::clean_up (struct thread_info *thread) | |
243a9253 | 1649 | { |
46e3ed7f | 1650 | breakpoint.reset (); |
8980e177 | 1651 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1652 | } |
f941662f | 1653 | |
243a9253 PA |
1654 | /* Implementation of the 'return_value' FSM method for the finish |
1655 | commands. */ | |
1656 | ||
46e3ed7f TT |
1657 | struct return_value_info * |
1658 | finish_command_fsm::return_value () | |
243a9253 | 1659 | { |
46e3ed7f | 1660 | return &return_value_info; |
43ff13b4 JM |
1661 | } |
1662 | ||
243a9253 PA |
1663 | /* Implementation of the 'async_reply_reason' FSM method for the |
1664 | finish commands. */ | |
1665 | ||
46e3ed7f TT |
1666 | enum async_reply_reason |
1667 | finish_command_fsm::do_async_reply_reason () | |
604ead4a | 1668 | { |
243a9253 PA |
1669 | if (execution_direction == EXEC_REVERSE) |
1670 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1671 | else | |
1672 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1673 | } |
1674 | ||
b2175913 MS |
1675 | /* finish_backward -- helper function for finish_command. */ |
1676 | ||
1677 | static void | |
243a9253 | 1678 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1679 | { |
1680 | struct symtab_and_line sal; | |
1681 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1682 | CORE_ADDR pc; |
b2175913 | 1683 | CORE_ADDR func_addr; |
b2175913 | 1684 | |
1c7819ef PA |
1685 | pc = get_frame_pc (get_current_frame ()); |
1686 | ||
1687 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1688 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1689 | |
1690 | sal = find_pc_line (func_addr, 0); | |
1691 | ||
9da8c2a0 | 1692 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1693 | /* Special case: if we're sitting at the function entry point, |
1694 | then all we need to do is take a reverse singlestep. We | |
1695 | don't need to set a breakpoint, and indeed it would do us | |
1696 | no good to do so. | |
1697 | ||
1698 | Note that this can only happen at frame #0, since there's | |
1699 | no way that a function up the stack can have a return address | |
1700 | that's equal to its entry point. */ | |
1701 | ||
1c7819ef | 1702 | if (sal.pc != pc) |
b2175913 | 1703 | { |
a6d9a66e UW |
1704 | struct frame_info *frame = get_selected_frame (NULL); |
1705 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1706 | |
1707 | /* Set a step-resume at the function's entry point. Once that's | |
1708 | hit, we'll do one more step backwards. */ | |
51abb421 | 1709 | symtab_and_line sr_sal; |
9da8c2a0 PA |
1710 | sr_sal.pc = sal.pc; |
1711 | sr_sal.pspace = get_frame_program_space (frame); | |
1712 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1713 | sr_sal, null_frame_id); | |
a6d9a66e | 1714 | |
64ce06e4 | 1715 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1716 | } |
1717 | else | |
b2175913 | 1718 | { |
9da8c2a0 PA |
1719 | /* We're almost there -- we just need to back up by one more |
1720 | single-step. */ | |
16c381f0 | 1721 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1722 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1723 | } |
b2175913 MS |
1724 | } |
1725 | ||
243a9253 PA |
1726 | /* finish_forward -- helper function for finish_command. FRAME is the |
1727 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1728 | |
1729 | static void | |
243a9253 | 1730 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1731 | { |
def166f6 | 1732 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1733 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1734 | struct symtab_and_line sal; |
1735 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1736 | |
1737 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1738 | sal.pc = get_frame_pc (frame); | |
1739 | ||
243a9253 PA |
1740 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1741 | get_stack_frame_id (frame), | |
46e3ed7f | 1742 | bp_finish); |
b2175913 | 1743 | |
c70a6932 JK |
1744 | /* set_momentary_breakpoint invalidates FRAME. */ |
1745 | frame = NULL; | |
1746 | ||
def166f6 | 1747 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1748 | |
46c03469 | 1749 | /* We want to print return value, please... */ |
16c381f0 | 1750 | tp->control.proceed_to_finish = 1; |
b2175913 | 1751 | |
243a9253 | 1752 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1753 | } |
1754 | ||
e3b5daf9 MM |
1755 | /* Skip frames for "finish". */ |
1756 | ||
1757 | static struct frame_info * | |
1758 | skip_finish_frames (struct frame_info *frame) | |
1759 | { | |
1760 | struct frame_info *start; | |
1761 | ||
1762 | do | |
1763 | { | |
1764 | start = frame; | |
1765 | ||
1766 | frame = skip_tailcall_frames (frame); | |
1767 | if (frame == NULL) | |
1768 | break; | |
1769 | ||
1770 | frame = skip_unwritable_frames (frame); | |
1771 | if (frame == NULL) | |
1772 | break; | |
1773 | } | |
1774 | while (start != frame); | |
1775 | ||
1776 | return frame; | |
1777 | } | |
1778 | ||
f941662f MK |
1779 | /* "finish": Set a temporary breakpoint at the place the selected |
1780 | frame will return to, then continue. */ | |
c906108c SS |
1781 | |
1782 | static void | |
0b39b52e | 1783 | finish_command (const char *arg, int from_tty) |
c906108c | 1784 | { |
52f0bd74 | 1785 | struct frame_info *frame; |
6c4486e6 | 1786 | int async_exec; |
243a9253 PA |
1787 | struct finish_command_fsm *sm; |
1788 | struct thread_info *tp; | |
43ff13b4 | 1789 | |
4247603b | 1790 | ERROR_NO_INFERIOR; |
573cda03 | 1791 | ensure_not_tfind_mode (); |
4247603b PA |
1792 | ensure_valid_thread (); |
1793 | ensure_not_running (); | |
573cda03 | 1794 | |
f941662f | 1795 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1796 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1797 | arg = stripped.get (); | |
43ff13b4 | 1798 | |
328d42d8 | 1799 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
c906108c SS |
1800 | |
1801 | if (arg) | |
8a3fe4f8 | 1802 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1803 | |
206415a3 | 1804 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1805 | if (frame == 0) |
8a3fe4f8 | 1806 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1807 | |
70509625 | 1808 | clear_proceed_status (0); |
c906108c | 1809 | |
243a9253 PA |
1810 | tp = inferior_thread (); |
1811 | ||
46e3ed7f | 1812 | sm = new finish_command_fsm (command_interp ()); |
243a9253 | 1813 | |
46e3ed7f | 1814 | tp->thread_fsm = sm; |
243a9253 | 1815 | |
edb3359d | 1816 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 1817 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
1818 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
1819 | == INLINE_FRAME) | |
1820 | { | |
1821 | /* Claim we are stepping in the calling frame. An empty step | |
1822 | range means that we will stop once we aren't in a function | |
1823 | called by that frame. We don't use the magic "1" value for | |
1824 | step_range_end, because then infrun will think this is nexti, | |
1825 | and not step over the rest of this inlined function call. */ | |
29734269 | 1826 | set_step_info (tp, frame, {}); |
16c381f0 JK |
1827 | tp->control.step_range_start = get_frame_pc (frame); |
1828 | tp->control.step_range_end = tp->control.step_range_start; | |
1829 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
1830 | |
1831 | /* Print info on the selected frame, including level number but not | |
1832 | source. */ | |
1833 | if (from_tty) | |
1834 | { | |
1835 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 1836 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
1837 | } |
1838 | ||
64ce06e4 | 1839 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
1840 | return; |
1841 | } | |
1842 | ||
c906108c SS |
1843 | /* Find the function we will return from. */ |
1844 | ||
243a9253 | 1845 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 1846 | |
f941662f MK |
1847 | /* Print info on the selected frame, including level number but not |
1848 | source. */ | |
c906108c SS |
1849 | if (from_tty) |
1850 | { | |
b2175913 MS |
1851 | if (execution_direction == EXEC_REVERSE) |
1852 | printf_filtered (_("Run back to call of ")); | |
1853 | else | |
743649fd | 1854 | { |
243a9253 | 1855 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
1856 | && !query (_("warning: Function %s does not return normally.\n" |
1857 | "Try to finish anyway? "), | |
987012b8 | 1858 | sm->function->print_name ())) |
743649fd MW |
1859 | error (_("Not confirmed.")); |
1860 | printf_filtered (_("Run till exit from ")); | |
1861 | } | |
b2175913 | 1862 | |
08d72866 | 1863 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
1864 | } |
1865 | ||
b2175913 | 1866 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 1867 | finish_backward (sm); |
b2175913 | 1868 | else |
33b4777c | 1869 | { |
e3b5daf9 | 1870 | frame = skip_finish_frames (frame); |
7eb89530 | 1871 | |
33b4777c MM |
1872 | if (frame == NULL) |
1873 | error (_("Cannot find the caller frame.")); | |
1874 | ||
1875 | finish_forward (sm, frame); | |
1876 | } | |
c906108c SS |
1877 | } |
1878 | \f | |
f941662f | 1879 | |
c906108c | 1880 | static void |
1d12d88f | 1881 | info_program_command (const char *args, int from_tty) |
c906108c | 1882 | { |
347bddb7 PA |
1883 | bpstat bs; |
1884 | int num, stat; | |
347bddb7 | 1885 | ptid_t ptid; |
5b6d1e4f | 1886 | process_stratum_target *proc_target; |
c5aa993b | 1887 | |
55f6301a | 1888 | if (!target_has_execution ()) |
c906108c | 1889 | { |
a3f17187 | 1890 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
1891 | return; |
1892 | } | |
1893 | ||
347bddb7 | 1894 | if (non_stop) |
5b6d1e4f PA |
1895 | { |
1896 | ptid = inferior_ptid; | |
1897 | proc_target = current_inferior ()->process_target (); | |
1898 | } | |
347bddb7 | 1899 | else |
5b6d1e4f | 1900 | get_last_target_status (&proc_target, &ptid, nullptr); |
347bddb7 | 1901 | |
9e7f3bbb | 1902 | if (ptid == null_ptid || ptid == minus_one_ptid) |
00431a78 PA |
1903 | error (_("No selected thread.")); |
1904 | ||
5b6d1e4f | 1905 | thread_info *tp = find_thread_ptid (proc_target, ptid); |
00431a78 PA |
1906 | |
1907 | if (tp->state == THREAD_EXITED) | |
347bddb7 | 1908 | error (_("Invalid selected thread.")); |
00431a78 | 1909 | else if (tp->state == THREAD_RUNNING) |
347bddb7 PA |
1910 | error (_("Selected thread is running.")); |
1911 | ||
16c381f0 | 1912 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
1913 | stat = bpstat_num (&bs, &num); |
1914 | ||
c906108c | 1915 | target_files_info (); |
5af949e3 | 1916 | printf_filtered (_("Program stopped at %s.\n"), |
f2ffa92b | 1917 | paddress (target_gdbarch (), tp->suspend.stop_pc)); |
16c381f0 | 1918 | if (tp->control.stop_step) |
a3f17187 | 1919 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 1920 | else if (stat != 0) |
c906108c SS |
1921 | { |
1922 | /* There may be several breakpoints in the same place, so this | |
dda83cd7 | 1923 | isn't as strange as it seems. */ |
8671a17b | 1924 | while (stat != 0) |
c906108c | 1925 | { |
8671a17b | 1926 | if (stat < 0) |
c906108c | 1927 | { |
3e43a32a MS |
1928 | printf_filtered (_("It stopped at a breakpoint " |
1929 | "that has since been deleted.\n")); | |
c906108c SS |
1930 | } |
1931 | else | |
a3f17187 | 1932 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 1933 | stat = bpstat_num (&bs, &num); |
c906108c SS |
1934 | } |
1935 | } | |
a493e3e2 | 1936 | else if (tp->suspend.stop_signal != GDB_SIGNAL_0) |
c906108c | 1937 | { |
a3f17187 | 1938 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
2ea28649 PA |
1939 | gdb_signal_to_name (tp->suspend.stop_signal), |
1940 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
c906108c SS |
1941 | } |
1942 | ||
0d41ba00 | 1943 | if (from_tty) |
c906108c | 1944 | { |
3e43a32a MS |
1945 | printf_filtered (_("Type \"info stack\" or \"info " |
1946 | "registers\" for more information.\n")); | |
c906108c SS |
1947 | } |
1948 | } | |
1949 | \f | |
1950 | static void | |
69f476a3 | 1951 | environment_info (const char *var, int from_tty) |
c906108c SS |
1952 | { |
1953 | if (var) | |
1954 | { | |
9a6c7d9c | 1955 | const char *val = current_inferior ()->environment.get (var); |
abbb1732 | 1956 | |
c906108c SS |
1957 | if (val) |
1958 | { | |
1959 | puts_filtered (var); | |
1960 | puts_filtered (" = "); | |
1961 | puts_filtered (val); | |
1962 | puts_filtered ("\n"); | |
1963 | } | |
1964 | else | |
1965 | { | |
1966 | puts_filtered ("Environment variable \""); | |
1967 | puts_filtered (var); | |
1968 | puts_filtered ("\" not defined.\n"); | |
1969 | } | |
1970 | } | |
1971 | else | |
1972 | { | |
9a6c7d9c | 1973 | char **envp = current_inferior ()->environment.envp (); |
abbb1732 | 1974 | |
9a6c7d9c | 1975 | for (int idx = 0; envp[idx] != NULL; ++idx) |
c906108c | 1976 | { |
9a6c7d9c | 1977 | puts_filtered (envp[idx]); |
c906108c SS |
1978 | puts_filtered ("\n"); |
1979 | } | |
1980 | } | |
1981 | } | |
1982 | ||
1983 | static void | |
69f476a3 | 1984 | set_environment_command (const char *arg, int from_tty) |
c906108c | 1985 | { |
69f476a3 | 1986 | const char *p, *val; |
c906108c SS |
1987 | int nullset = 0; |
1988 | ||
1989 | if (arg == 0) | |
e2e0b3e5 | 1990 | error_no_arg (_("environment variable and value")); |
c906108c | 1991 | |
85102364 | 1992 | /* Find separation between variable name and value. */ |
c906108c SS |
1993 | p = (char *) strchr (arg, '='); |
1994 | val = (char *) strchr (arg, ' '); | |
1995 | ||
1996 | if (p != 0 && val != 0) | |
1997 | { | |
1998 | /* We have both a space and an equals. If the space is before the | |
dda83cd7 SM |
1999 | equals, walk forward over the spaces til we see a nonspace |
2000 | (possibly the equals). */ | |
c906108c SS |
2001 | if (p > val) |
2002 | while (*val == ' ') | |
2003 | val++; | |
2004 | ||
2005 | /* Now if the = is after the char following the spaces, | |
dda83cd7 | 2006 | take the char following the spaces. */ |
c906108c SS |
2007 | if (p > val) |
2008 | p = val - 1; | |
2009 | } | |
2010 | else if (val != 0 && p == 0) | |
2011 | p = val; | |
2012 | ||
2013 | if (p == arg) | |
e2e0b3e5 | 2014 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2015 | |
2016 | if (p == 0 || p[1] == 0) | |
2017 | { | |
2018 | nullset = 1; | |
2019 | if (p == 0) | |
1777feb0 | 2020 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2021 | } |
2022 | else | |
2023 | { | |
1777feb0 | 2024 | /* Not setting variable value to null. */ |
c906108c SS |
2025 | val = p + 1; |
2026 | while (*val == ' ' || *val == '\t') | |
2027 | val++; | |
2028 | } | |
2029 | ||
c5aa993b JM |
2030 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2031 | p--; | |
c906108c | 2032 | |
69f476a3 | 2033 | std::string var (arg, p - arg); |
c906108c SS |
2034 | if (nullset) |
2035 | { | |
3e43a32a MS |
2036 | printf_filtered (_("Setting environment variable " |
2037 | "\"%s\" to null value.\n"), | |
69f476a3 TT |
2038 | var.c_str ()); |
2039 | current_inferior ()->environment.set (var.c_str (), ""); | |
c906108c SS |
2040 | } |
2041 | else | |
69f476a3 | 2042 | current_inferior ()->environment.set (var.c_str (), val); |
c906108c SS |
2043 | } |
2044 | ||
2045 | static void | |
69f476a3 | 2046 | unset_environment_command (const char *var, int from_tty) |
c906108c SS |
2047 | { |
2048 | if (var == 0) | |
2049 | { | |
2050 | /* If there is no argument, delete all environment variables. | |
dda83cd7 | 2051 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2052 | if (!from_tty || query (_("Delete all environment variables? "))) |
206726fb | 2053 | current_inferior ()->environment.clear (); |
c906108c SS |
2054 | } |
2055 | else | |
9a6c7d9c | 2056 | current_inferior ()->environment.unset (var); |
c906108c SS |
2057 | } |
2058 | ||
1777feb0 | 2059 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2060 | |
2061 | static const char path_var_name[] = "PATH"; | |
2062 | ||
c906108c | 2063 | static void |
69f476a3 | 2064 | path_info (const char *args, int from_tty) |
c906108c SS |
2065 | { |
2066 | puts_filtered ("Executable and object file path: "); | |
9a6c7d9c | 2067 | puts_filtered (current_inferior ()->environment.get (path_var_name)); |
c906108c SS |
2068 | puts_filtered ("\n"); |
2069 | } | |
2070 | ||
2071 | /* Add zero or more directories to the front of the execution path. */ | |
2072 | ||
2073 | static void | |
0b39b52e | 2074 | path_command (const char *dirname, int from_tty) |
c906108c SS |
2075 | { |
2076 | char *exec_path; | |
a121b7c1 | 2077 | const char *env; |
abbb1732 | 2078 | |
c906108c | 2079 | dont_repeat (); |
9a6c7d9c | 2080 | env = current_inferior ()->environment.get (path_var_name); |
1777feb0 | 2081 | /* Can be null if path is not set. */ |
c906108c SS |
2082 | if (!env) |
2083 | env = ""; | |
4fcf66da | 2084 | exec_path = xstrdup (env); |
c906108c | 2085 | mod_path (dirname, &exec_path); |
9a6c7d9c | 2086 | current_inferior ()->environment.set (path_var_name, exec_path); |
b8c9b27d | 2087 | xfree (exec_path); |
c906108c | 2088 | if (from_tty) |
cafb3438 | 2089 | path_info (NULL, from_tty); |
c906108c | 2090 | } |
c906108c | 2091 | \f |
c5aa993b | 2092 | |
e813d34a RK |
2093 | static void |
2094 | pad_to_column (string_file &stream, int col) | |
2095 | { | |
2096 | /* At least one space must be printed to separate columns. */ | |
2097 | stream.putc (' '); | |
2098 | const int size = stream.size (); | |
2099 | if (size < col) | |
2100 | stream.puts (n_spaces (col - size)); | |
2101 | } | |
2102 | ||
1292279a PA |
2103 | /* Print out the register NAME with value VAL, to FILE, in the default |
2104 | fashion. */ | |
2105 | ||
2106 | static void | |
2107 | default_print_one_register_info (struct ui_file *file, | |
2108 | const char *name, | |
2109 | struct value *val) | |
2110 | { | |
2111 | struct type *regtype = value_type (val); | |
f69d9aef | 2112 | int print_raw_format; |
e813d34a RK |
2113 | string_file format_stream; |
2114 | enum tab_stops | |
2115 | { | |
2116 | value_column_1 = 15, | |
2117 | /* Give enough room for "0x", 16 hex digits and two spaces in | |
dda83cd7 | 2118 | preceding column. */ |
e813d34a RK |
2119 | value_column_2 = value_column_1 + 2 + 16 + 2, |
2120 | }; | |
1292279a | 2121 | |
e813d34a RK |
2122 | format_stream.puts (name); |
2123 | pad_to_column (format_stream, value_column_1); | |
1292279a | 2124 | |
f69d9aef AB |
2125 | print_raw_format = (value_entirely_available (val) |
2126 | && !value_optimized_out (val)); | |
1292279a PA |
2127 | |
2128 | /* If virtual format is floating, print it that way, and in raw | |
2129 | hex. */ | |
78134374 SM |
2130 | if (regtype->code () == TYPE_CODE_FLT |
2131 | || regtype->code () == TYPE_CODE_DECFLOAT) | |
1292279a | 2132 | { |
1292279a PA |
2133 | struct value_print_options opts; |
2134 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
34877895 | 2135 | enum bfd_endian byte_order = type_byte_order (regtype); |
1292279a PA |
2136 | |
2137 | get_user_print_options (&opts); | |
2138 | opts.deref_ref = 1; | |
2139 | ||
3444c526 | 2140 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a | 2141 | |
f69d9aef AB |
2142 | if (print_raw_format) |
2143 | { | |
e813d34a RK |
2144 | pad_to_column (format_stream, value_column_2); |
2145 | format_stream.puts ("(raw "); | |
2146 | print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype), | |
2147 | byte_order, true); | |
2148 | format_stream.putc (')'); | |
f69d9aef | 2149 | } |
1292279a PA |
2150 | } |
2151 | else | |
2152 | { | |
2153 | struct value_print_options opts; | |
2154 | ||
2155 | /* Print the register in hex. */ | |
2156 | get_formatted_print_options (&opts, 'x'); | |
2157 | opts.deref_ref = 1; | |
3444c526 | 2158 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2159 | /* If not a vector register, print it also according to its |
2160 | natural format. */ | |
bd63c870 | 2161 | if (print_raw_format && regtype->is_vector () == 0) |
1292279a | 2162 | { |
e813d34a | 2163 | pad_to_column (format_stream, value_column_2); |
1292279a PA |
2164 | get_user_print_options (&opts); |
2165 | opts.deref_ref = 1; | |
3444c526 | 2166 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2167 | } |
2168 | } | |
2169 | ||
e813d34a | 2170 | fputs_filtered (format_stream.c_str (), file); |
1292279a PA |
2171 | fprintf_filtered (file, "\n"); |
2172 | } | |
2173 | ||
1777feb0 | 2174 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2175 | registers (print_all == 1) or all non-float and non-vector |
2176 | registers (print_all == 0). | |
c906108c SS |
2177 | |
2178 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2179 | register(s) one per line is good enough. If a different format is |
2180 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2181 | regs), or there is an existing convention for showing all the | |
2182 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2183 | provide that format. */ | |
c906108c | 2184 | |
666e11c5 | 2185 | void |
0ab7a791 AC |
2186 | default_print_registers_info (struct gdbarch *gdbarch, |
2187 | struct ui_file *file, | |
2188 | struct frame_info *frame, | |
2189 | int regnum, int print_all) | |
c906108c | 2190 | { |
0ab7a791 | 2191 | int i; |
f6efe3f8 | 2192 | const int numregs = gdbarch_num_cooked_regs (gdbarch); |
0ab7a791 | 2193 | |
c906108c SS |
2194 | for (i = 0; i < numregs; i++) |
2195 | { | |
4782dc19 | 2196 | /* Decide between printing all regs, non-float / vector regs, or |
dda83cd7 | 2197 | specific reg. */ |
c5aa993b JM |
2198 | if (regnum == -1) |
2199 | { | |
f9418c0f | 2200 | if (print_all) |
4782dc19 | 2201 | { |
f9418c0f | 2202 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2203 | continue; |
f9418c0f AC |
2204 | } |
2205 | else | |
2206 | { | |
2207 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2208 | continue; |
2209 | } | |
c5aa993b JM |
2210 | } |
2211 | else | |
2212 | { | |
2213 | if (i != regnum) | |
2214 | continue; | |
2215 | } | |
c906108c SS |
2216 | |
2217 | /* If the register name is empty, it is undefined for this | |
dda83cd7 | 2218 | processor, so don't display anything. */ |
a4bd449d UW |
2219 | if (gdbarch_register_name (gdbarch, i) == NULL |
2220 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2221 | continue; |
2222 | ||
1292279a PA |
2223 | default_print_one_register_info (file, |
2224 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2225 | value_of_register (i, frame)); |
c906108c SS |
2226 | } |
2227 | } | |
c906108c | 2228 | |
c906108c | 2229 | void |
1d12d88f | 2230 | registers_info (const char *addr_exp, int fpregs) |
c906108c | 2231 | { |
206415a3 | 2232 | struct frame_info *frame; |
a4bd449d | 2233 | struct gdbarch *gdbarch; |
c906108c | 2234 | |
9dccd06e | 2235 | if (!target_has_registers ()) |
8a3fe4f8 | 2236 | error (_("The program has no registers now.")); |
206415a3 | 2237 | frame = get_selected_frame (NULL); |
a4bd449d | 2238 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2239 | |
2240 | if (!addr_exp) | |
2241 | { | |
a4bd449d | 2242 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2243 | frame, -1, fpregs); |
c906108c SS |
2244 | return; |
2245 | } | |
2246 | ||
f9418c0f | 2247 | while (*addr_exp != '\0') |
c5aa993b | 2248 | { |
1d12d88f | 2249 | const char *start; |
f9418c0f | 2250 | const char *end; |
c906108c | 2251 | |
529480d0 KS |
2252 | /* Skip leading white space. */ |
2253 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2254 | |
f9418c0f | 2255 | /* Discard any leading ``$''. Check that there is something |
dda83cd7 | 2256 | resembling a register following it. */ |
f9418c0f AC |
2257 | if (addr_exp[0] == '$') |
2258 | addr_exp++; | |
2259 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2260 | error (_("Missing register name")); |
c906108c | 2261 | |
f9418c0f AC |
2262 | /* Find the start/end of this register name/num/group. */ |
2263 | start = addr_exp; | |
2264 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2265 | addr_exp++; | |
2266 | end = addr_exp; | |
ad842144 | 2267 | |
f9418c0f AC |
2268 | /* Figure out what we've found and display it. */ |
2269 | ||
2270 | /* A register name? */ | |
2271 | { | |
029a67e4 | 2272 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2273 | |
f9418c0f AC |
2274 | if (regnum >= 0) |
2275 | { | |
ad842144 MR |
2276 | /* User registers lie completely outside of the range of |
2277 | normal registers. Catch them early so that the target | |
2278 | never sees them. */ | |
f6efe3f8 | 2279 | if (regnum >= gdbarch_num_cooked_regs (gdbarch)) |
ad842144 | 2280 | { |
1292279a PA |
2281 | struct value *regval = value_of_user_reg (regnum, frame); |
2282 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2283 | regnum); | |
2284 | ||
2285 | /* Print in the same fashion | |
2286 | gdbarch_print_registers_info's default | |
2287 | implementation prints. */ | |
2288 | default_print_one_register_info (gdb_stdout, | |
2289 | regname, | |
2290 | regval); | |
ad842144 MR |
2291 | } |
2292 | else | |
2293 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2294 | frame, regnum, fpregs); | |
f9418c0f AC |
2295 | continue; |
2296 | } | |
2297 | } | |
ad842144 | 2298 | |
f9418c0f AC |
2299 | /* A register group? */ |
2300 | { | |
6c7d17ba | 2301 | struct reggroup *group; |
abbb1732 | 2302 | |
a4bd449d | 2303 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2304 | group != NULL; |
a4bd449d | 2305 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2306 | { |
2307 | /* Don't bother with a length check. Should the user | |
2308 | enter a short register group name, go with the first | |
2309 | group that matches. */ | |
6c7d17ba | 2310 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2311 | break; |
2312 | } | |
6c7d17ba | 2313 | if (group != NULL) |
f9418c0f AC |
2314 | { |
2315 | int regnum; | |
abbb1732 | 2316 | |
f57d151a | 2317 | for (regnum = 0; |
f6efe3f8 | 2318 | regnum < gdbarch_num_cooked_regs (gdbarch); |
f57d151a | 2319 | regnum++) |
f9418c0f | 2320 | { |
a4bd449d UW |
2321 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2322 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2323 | gdb_stdout, frame, |
f9418c0f AC |
2324 | regnum, fpregs); |
2325 | } | |
2326 | continue; | |
2327 | } | |
2328 | } | |
c906108c | 2329 | |
f9418c0f | 2330 | /* Nothing matched. */ |
8a3fe4f8 | 2331 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2332 | } |
c906108c SS |
2333 | } |
2334 | ||
1dd5fedc | 2335 | static void |
1d12d88f | 2336 | info_all_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2337 | { |
2338 | registers_info (addr_exp, 1); | |
2339 | } | |
2340 | ||
a58dd373 | 2341 | static void |
1d12d88f | 2342 | info_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2343 | { |
2344 | registers_info (addr_exp, 0); | |
2345 | } | |
e76f1f2e AC |
2346 | |
2347 | static void | |
d80b854b | 2348 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2349 | struct frame_info *frame, const char *args) |
2350 | { | |
d80b854b UW |
2351 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2352 | ||
e76f1f2e AC |
2353 | if (gdbarch_print_vector_info_p (gdbarch)) |
2354 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2355 | else | |
2356 | { | |
2357 | int regnum; | |
2358 | int printed_something = 0; | |
ab4327e0 | 2359 | |
f6efe3f8 | 2360 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
e76f1f2e | 2361 | { |
f9418c0f | 2362 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2363 | { |
2364 | printed_something = 1; | |
e76f1f2e | 2365 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2366 | } |
2367 | } | |
2368 | if (!printed_something) | |
2369 | fprintf_filtered (file, "No vector information\n"); | |
2370 | } | |
2371 | } | |
2372 | ||
2373 | static void | |
1d12d88f | 2374 | info_vector_command (const char *args, int from_tty) |
e76f1f2e | 2375 | { |
9dccd06e | 2376 | if (!target_has_registers ()) |
206415a3 DJ |
2377 | error (_("The program has no registers now.")); |
2378 | ||
d80b854b | 2379 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2380 | } |
c906108c | 2381 | \f |
5fd62852 PA |
2382 | /* Kill the inferior process. Make us have no inferior. */ |
2383 | ||
2384 | static void | |
981a3fb3 | 2385 | kill_command (const char *arg, int from_tty) |
5fd62852 PA |
2386 | { |
2387 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2388 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2389 | some targets don't have processes! */ |
5fd62852 | 2390 | |
d7e15655 | 2391 | if (inferior_ptid == null_ptid) |
5fd62852 PA |
2392 | error (_("The program is not being run.")); |
2393 | if (!query (_("Kill the program being debugged? "))) | |
2394 | error (_("Not confirmed.")); | |
f67c0c91 | 2395 | |
249b5733 PA |
2396 | int pid = current_inferior ()->pid; |
2397 | /* Save the pid as a string before killing the inferior, since that | |
2398 | may unpush the current target, and we need the string after. */ | |
f2907e49 | 2399 | std::string pid_str = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
2400 | int infnum = current_inferior ()->num; |
2401 | ||
5fd62852 PA |
2402 | target_kill (); |
2403 | ||
f67c0c91 | 2404 | if (print_inferior_events) |
249b5733 | 2405 | printf_unfiltered (_("[Inferior %d (%s) killed]\n"), |
f67c0c91 SDJ |
2406 | infnum, pid_str.c_str ()); |
2407 | ||
5fd62852 PA |
2408 | bfd_cache_close_all (); |
2409 | } | |
c5aa993b | 2410 | |
08036331 | 2411 | /* Used in `attach&' command. Proceed threads of inferior INF iff |
74531fed | 2412 | they stopped due to debugger request, and when they did, they |
08036331 PA |
2413 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that |
2414 | have been explicitly been told to stop. */ | |
74531fed PA |
2415 | |
2416 | static void | |
08036331 | 2417 | proceed_after_attach (inferior *inf) |
74531fed PA |
2418 | { |
2419 | /* Don't error out if the current thread is running, because | |
2420 | there may be other stopped threads. */ | |
74531fed PA |
2421 | |
2422 | /* Backup current thread and selected frame. */ | |
5ed8105e | 2423 | scoped_restore_current_thread restore_thread; |
74531fed | 2424 | |
08036331 PA |
2425 | for (thread_info *thread : inf->non_exited_threads ()) |
2426 | if (!thread->executing | |
2427 | && !thread->stop_requested | |
2428 | && thread->suspend.stop_signal == GDB_SIGNAL_0) | |
2429 | { | |
2430 | switch_to_thread (thread); | |
2431 | clear_proceed_status (0); | |
2432 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
2433 | } | |
74531fed PA |
2434 | } |
2435 | ||
6efcd9a8 | 2436 | /* See inferior.h. */ |
c906108c | 2437 | |
6efcd9a8 PA |
2438 | void |
2439 | setup_inferior (int from_tty) | |
9356cf8d | 2440 | { |
d6b48e9c | 2441 | struct inferior *inferior; |
9356cf8d | 2442 | |
d6b48e9c | 2443 | inferior = current_inferior (); |
6efcd9a8 | 2444 | inferior->needs_setup = 0; |
9356cf8d PA |
2445 | |
2446 | /* If no exec file is yet known, try to determine it from the | |
2447 | process itself. */ | |
a10de604 | 2448 | if (get_exec_file (0) == NULL) |
e99b03dc | 2449 | exec_file_locate_attach (inferior_ptid.pid (), 1, from_tty); |
9356cf8d PA |
2450 | else |
2451 | { | |
2452 | reopen_exec_file (); | |
2453 | reread_symbols (); | |
2454 | } | |
2455 | ||
2456 | /* Take any necessary post-attaching actions for this platform. */ | |
e99b03dc | 2457 | target_post_attach (inferior_ptid.pid ()); |
9356cf8d | 2458 | |
a7aba266 | 2459 | post_create_inferior (from_tty); |
6efcd9a8 PA |
2460 | } |
2461 | ||
2462 | /* What to do after the first program stops after attaching. */ | |
2463 | enum attach_post_wait_mode | |
2464 | { | |
2465 | /* Do nothing. Leaves threads as they are. */ | |
2466 | ATTACH_POST_WAIT_NOTHING, | |
2467 | ||
2468 | /* Re-resume threads that are marked running. */ | |
2469 | ATTACH_POST_WAIT_RESUME, | |
2470 | ||
2471 | /* Stop all threads. */ | |
2472 | ATTACH_POST_WAIT_STOP, | |
2473 | }; | |
2474 | ||
2475 | /* Called after we've attached to a process and we've seen it stop for | |
6fee5eee TBA |
2476 | the first time. Resume, stop, or don't touch the threads according |
2477 | to MODE. */ | |
6efcd9a8 PA |
2478 | |
2479 | static void | |
27d0790a | 2480 | attach_post_wait (int from_tty, enum attach_post_wait_mode mode) |
6efcd9a8 PA |
2481 | { |
2482 | struct inferior *inferior; | |
9356cf8d | 2483 | |
6efcd9a8 PA |
2484 | inferior = current_inferior (); |
2485 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2486 | ||
2487 | if (inferior->needs_setup) | |
2488 | setup_inferior (from_tty); | |
2489 | ||
2490 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2491 | { |
2492 | /* The user requested an `attach&', so be sure to leave threads | |
2493 | that didn't get a signal running. */ | |
2494 | ||
6fee5eee | 2495 | /* Immediately resume all suspended threads of this inferior, |
74531fed PA |
2496 | and this inferior only. This should have no effect on |
2497 | already running threads. If a thread has been stopped with a | |
2498 | signal, leave it be. */ | |
2499 | if (non_stop) | |
08036331 | 2500 | proceed_after_attach (inferior); |
74531fed PA |
2501 | else |
2502 | { | |
a493e3e2 | 2503 | if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed | 2504 | { |
70509625 | 2505 | clear_proceed_status (0); |
64ce06e4 | 2506 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2507 | } |
2508 | } | |
2509 | } | |
6efcd9a8 | 2510 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2511 | { |
74531fed PA |
2512 | /* The user requested a plain `attach', so be sure to leave |
2513 | the inferior stopped. */ | |
2514 | ||
74531fed PA |
2515 | /* At least the current thread is already stopped. */ |
2516 | ||
2517 | /* In all-stop, by definition, all threads have to be already | |
2518 | stopped at this point. In non-stop, however, although the | |
2519 | selected thread is stopped, others may still be executing. | |
2520 | Be sure to explicitly stop all threads of the process. This | |
2521 | should have no effect on already stopped threads. */ | |
066f6b6e | 2522 | if (non_stop) |
f2907e49 | 2523 | target_stop (ptid_t (inferior->pid)); |
066f6b6e PA |
2524 | else if (target_is_non_stop_p ()) |
2525 | { | |
066f6b6e | 2526 | struct thread_info *lowest = inferior_thread (); |
066f6b6e PA |
2527 | |
2528 | stop_all_threads (); | |
2529 | ||
2530 | /* It's not defined which thread will report the attach | |
2531 | stop. For consistency, always select the thread with | |
2532 | lowest GDB number, which should be the main thread, if it | |
2533 | still exists. */ | |
08036331 PA |
2534 | for (thread_info *thread : current_inferior ()->non_exited_threads ()) |
2535 | if (thread->inf->num < lowest->inf->num | |
2536 | || thread->per_inf_num < lowest->per_inf_num) | |
2537 | lowest = thread; | |
066f6b6e | 2538 | |
00431a78 | 2539 | switch_to_thread (lowest); |
066f6b6e | 2540 | } |
74531fed PA |
2541 | |
2542 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2543 | normal_stop (); |
2544 | if (deprecated_attach_hook) | |
2545 | deprecated_attach_hook (); | |
2546 | } | |
2547 | } | |
2548 | ||
6efcd9a8 PA |
2549 | /* "attach" command entry point. Takes a program started up outside |
2550 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2551 | and allows us to start debugging it. */ | |
2552 | ||
c906108c | 2553 | void |
0b39b52e | 2554 | attach_command (const char *args, int from_tty) |
c906108c | 2555 | { |
6c4486e6 | 2556 | int async_exec; |
b3ccfe11 | 2557 | struct target_ops *attach_target; |
6efcd9a8 PA |
2558 | struct inferior *inferior = current_inferior (); |
2559 | enum attach_post_wait_mode mode; | |
c906108c | 2560 | |
c5aa993b | 2561 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2562 | |
1192f124 SM |
2563 | scoped_disable_commit_resumed disable_commit_resumed ("attaching"); |
2564 | ||
f5656ead | 2565 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2566 | /* Don't complain if all processes share the same symbol |
2567 | space. */ | |
8a305172 | 2568 | ; |
55f6301a | 2569 | else if (target_has_execution ()) |
c906108c | 2570 | { |
9e2f0ad4 | 2571 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2572 | target_kill (); |
2573 | else | |
8a3fe4f8 | 2574 | error (_("Not killed.")); |
c906108c SS |
2575 | } |
2576 | ||
fd79ecee DJ |
2577 | /* Clean up any leftovers from other runs. Some other things from |
2578 | this function should probably be moved into target_pre_inferior. */ | |
2579 | target_pre_inferior (from_tty); | |
2580 | ||
6be9a197 TT |
2581 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
2582 | args = stripped.get (); | |
8bc2fe48 | 2583 | |
b3ccfe11 TT |
2584 | attach_target = find_attach_target (); |
2585 | ||
8bc2fe48 PA |
2586 | prepare_execution_command (attach_target, async_exec); |
2587 | ||
f6ac5f3d | 2588 | if (non_stop && !attach_target->supports_non_stop ()) |
9908b566 VP |
2589 | error (_("Cannot attach to this target in non-stop mode")); |
2590 | ||
f6ac5f3d | 2591 | attach_target->attach (args, from_tty); |
b3ccfe11 TT |
2592 | /* to_attach should push the target, so after this point we |
2593 | shouldn't refer to attach_target again. */ | |
2594 | attach_target = NULL; | |
c906108c SS |
2595 | |
2596 | /* Set up the "saved terminal modes" of the inferior | |
2597 | based on what modes we are starting it with. */ | |
223ffa71 | 2598 | target_terminal::init (); |
c906108c | 2599 | |
7180e04a PA |
2600 | /* Install inferior's terminal modes. This may look like a no-op, |
2601 | as we've just saved them above, however, this does more than | |
2602 | restore terminal settings: | |
2603 | ||
2604 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2605 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2606 | stop would end up as a spurious Quit. | |
2607 | ||
2608 | - removes stdin from the event loop, which we need if attaching | |
2609 | in the foreground, otherwise on targets that report an initial | |
2610 | stop on attach (which are most) we'd process input/commands | |
2611 | while we're in the event loop waiting for that stop. That is, | |
2612 | before the attach continuation runs and the command is really | |
2613 | finished. */ | |
223ffa71 | 2614 | target_terminal::inferior (); |
7180e04a | 2615 | |
c906108c SS |
2616 | /* Set up execution context to know that we should return from |
2617 | wait_for_inferior as soon as the target reports a stop. */ | |
2618 | init_wait_for_inferior (); | |
c906108c | 2619 | |
6efcd9a8 PA |
2620 | inferior->needs_setup = 1; |
2621 | ||
fbea99ea | 2622 | if (target_is_non_stop_p ()) |
74531fed PA |
2623 | { |
2624 | /* If we find that the current thread isn't stopped, explicitly | |
2625 | do so now, because we're going to install breakpoints and | |
2626 | poke at memory. */ | |
2627 | ||
2628 | if (async_exec) | |
2629 | /* The user requested an `attach&'; stop just one thread. */ | |
2630 | target_stop (inferior_ptid); | |
2631 | else | |
2632 | /* The user requested an `attach', so stop all threads of this | |
2633 | inferior. */ | |
e99b03dc | 2634 | target_stop (ptid_t (inferior_ptid.pid ())); |
74531fed PA |
2635 | } |
2636 | ||
a2fedca9 PW |
2637 | /* Check for exec file mismatch, and let the user solve it. */ |
2638 | validate_exec_file (from_tty); | |
2639 | ||
6efcd9a8 PA |
2640 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2641 | ||
dc177b7a PA |
2642 | /* Some system don't generate traps when attaching to inferior. |
2643 | E.g. Mach 3 or GNU hurd. */ | |
f6ac5f3d | 2644 | if (!target_attach_no_wait ()) |
c5aa993b | 2645 | { |
1777feb0 | 2646 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2647 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2648 | need a way for handle_inferior_event to reset the stop_signal | |
2649 | variable after an attach, and this is what | |
2650 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2651 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2652 | |
3b12939d | 2653 | /* Wait for stop. */ |
4efeb0d3 | 2654 | inferior->add_continuation ([=] () |
c4c493de TBA |
2655 | { |
2656 | attach_post_wait (from_tty, mode); | |
2657 | }); | |
0b333c5e | 2658 | |
5b6d1e4f PA |
2659 | /* Let infrun consider waiting for events out of this |
2660 | target. */ | |
2661 | inferior->process_target ()->threads_executing = true; | |
2662 | ||
0b333c5e PA |
2663 | if (!target_is_async_p ()) |
2664 | mark_infrun_async_event_handler (); | |
2665 | return; | |
dc177b7a | 2666 | } |
5b6d1e4f | 2667 | else |
27d0790a | 2668 | attach_post_wait (from_tty, mode); |
1192f124 SM |
2669 | |
2670 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2671 | } |
2672 | ||
1941c569 PA |
2673 | /* We had just found out that the target was already attached to an |
2674 | inferior. PTID points at a thread of this new inferior, that is | |
2675 | the most likely to be stopped right now, but not necessarily so. | |
2676 | The new inferior is assumed to be already added to the inferior | |
2677 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2678 | this inferior running, except those we've explicitly seen reported | |
2679 | as stopped. */ | |
2680 | ||
2681 | void | |
8a82de58 | 2682 | notice_new_inferior (thread_info *thr, bool leave_running, int from_tty) |
1941c569 | 2683 | { |
5ed8105e PA |
2684 | enum attach_post_wait_mode mode |
2685 | = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; | |
1941c569 | 2686 | |
5ed8105e | 2687 | gdb::optional<scoped_restore_current_thread> restore_thread; |
1941c569 | 2688 | |
5ed8105e PA |
2689 | if (inferior_ptid != null_ptid) |
2690 | restore_thread.emplace (); | |
1941c569 | 2691 | |
6efcd9a8 PA |
2692 | /* Avoid reading registers -- we haven't fetched the target |
2693 | description yet. */ | |
00431a78 | 2694 | switch_to_thread_no_regs (thr); |
1941c569 PA |
2695 | |
2696 | /* When we "notice" a new inferior we need to do all the things we | |
2697 | would normally do if we had just attached to it. */ | |
2698 | ||
00431a78 | 2699 | if (thr->executing) |
1941c569 PA |
2700 | { |
2701 | struct inferior *inferior = current_inferior (); | |
2702 | ||
2703 | /* We're going to install breakpoints, and poke at memory, | |
2704 | ensure that the inferior is stopped for a moment while we do | |
2705 | that. */ | |
2706 | target_stop (inferior_ptid); | |
2707 | ||
16c381f0 | 2708 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2709 | |
2710 | /* Wait for stop before proceeding. */ | |
4efeb0d3 | 2711 | inferior->add_continuation ([=] () |
c4c493de TBA |
2712 | { |
2713 | attach_post_wait (from_tty, mode); | |
2714 | }); | |
1941c569 | 2715 | |
0b333c5e | 2716 | return; |
1941c569 PA |
2717 | } |
2718 | ||
27d0790a | 2719 | attach_post_wait (from_tty, mode); |
1941c569 PA |
2720 | } |
2721 | ||
c906108c SS |
2722 | /* |
2723 | * detach_command -- | |
2724 | * takes a program previously attached to and detaches it. | |
2725 | * The program resumes execution and will no longer stop | |
2726 | * on signals, etc. We better not have left any breakpoints | |
2727 | * in the program or it'll die when it hits one. For this | |
2728 | * to work, it may be necessary for the process to have been | |
2729 | * previously attached. It *might* work if the program was | |
2730 | * started via the normal ptrace (PTRACE_TRACEME). | |
2731 | */ | |
2732 | ||
6418d433 | 2733 | void |
981a3fb3 | 2734 | detach_command (const char *args, int from_tty) |
c906108c | 2735 | { |
1f5d0fc9 | 2736 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a | 2737 | |
d7e15655 | 2738 | if (inferior_ptid == null_ptid) |
d729566a PA |
2739 | error (_("The program is not being run.")); |
2740 | ||
1192f124 SM |
2741 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); |
2742 | ||
2f9d54cf PA |
2743 | query_if_trace_running (from_tty); |
2744 | ||
2745 | disconnect_tracing (); | |
d5551862 | 2746 | |
408f6686 PA |
2747 | /* Hold a strong reference to the target while (maybe) |
2748 | detaching the parent. Otherwise detaching could close the | |
2749 | target. */ | |
2750 | auto target_ref | |
2751 | = target_ops_ref::new_reference (current_inferior ()->process_target ()); | |
2752 | ||
2753 | /* Save this before detaching, since detaching may unpush the | |
2754 | process_stratum target. */ | |
2755 | bool was_non_stop_p = target_is_non_stop_p (); | |
2756 | ||
6e1e1966 | 2757 | target_detach (current_inferior (), from_tty); |
50c71eaf | 2758 | |
63000888 PA |
2759 | /* The current inferior process was just detached successfully. Get |
2760 | rid of breakpoints that no longer make sense. Note we don't do | |
2761 | this within target_detach because that is also used when | |
2762 | following child forks, and in that case we will want to transfer | |
2763 | breakpoints to the child, not delete them. */ | |
2764 | breakpoint_init_inferior (inf_exited); | |
2765 | ||
50c71eaf PA |
2766 | /* If the solist is global across inferiors, don't clear it when we |
2767 | detach from a single inferior. */ | |
f5656ead | 2768 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 2769 | no_shared_libraries (NULL, from_tty); |
8a305172 | 2770 | |
9a4105ab AC |
2771 | if (deprecated_detach_hook) |
2772 | deprecated_detach_hook (); | |
408f6686 PA |
2773 | |
2774 | if (!was_non_stop_p) | |
2775 | restart_after_all_stop_detach (as_process_stratum_target (target_ref.get ())); | |
1192f124 SM |
2776 | |
2777 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2778 | } |
2779 | ||
6ad8ae5c DJ |
2780 | /* Disconnect from the current target without resuming it (leaving it |
2781 | waiting for a debugger). | |
2782 | ||
2783 | We'd better not have left any breakpoints in the program or the | |
2784 | next debugger will get confused. Currently only supported for some | |
2785 | remote targets, since the normal attach mechanisms don't work on | |
2786 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
2787 | ||
2788 | static void | |
0b39b52e | 2789 | disconnect_command (const char *args, int from_tty) |
6ad8ae5c | 2790 | { |
1777feb0 | 2791 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
2792 | query_if_trace_running (from_tty); |
2793 | disconnect_tracing (); | |
6ad8ae5c | 2794 | target_disconnect (args, from_tty); |
e85a822c | 2795 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 2796 | init_thread_list (); |
9a4105ab AC |
2797 | if (deprecated_detach_hook) |
2798 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
2799 | } |
2800 | ||
5b6d1e4f PA |
2801 | /* Stop PTID in the current target, and tag the PTID threads as having |
2802 | been explicitly requested to stop. PTID can be a thread, a | |
2803 | process, or minus_one_ptid, meaning all threads of all inferiors of | |
2804 | the current target. */ | |
e42de8c7 | 2805 | |
5b6d1e4f PA |
2806 | static void |
2807 | stop_current_target_threads_ns (ptid_t ptid) | |
2808 | { | |
2809 | target_stop (ptid); | |
252fbfc8 PA |
2810 | |
2811 | /* Tag the thread as having been explicitly requested to stop, so | |
2812 | other parts of gdb know not to resume this thread automatically, | |
2813 | if it was stopped due to an internal event. Limit this to | |
2814 | non-stop mode, as when debugging a multi-threaded application in | |
2815 | all-stop mode, we will only get one stop event --- it's undefined | |
2816 | which thread will report the event. */ | |
5b6d1e4f PA |
2817 | set_stop_requested (current_inferior ()->process_target (), |
2818 | ptid, 1); | |
2819 | } | |
2820 | ||
2821 | /* See inferior.h. */ | |
2822 | ||
2823 | void | |
2824 | interrupt_target_1 (bool all_threads) | |
2825 | { | |
1192f124 SM |
2826 | scoped_disable_commit_resumed disable_commit_resumed ("interrupting"); |
2827 | ||
252fbfc8 | 2828 | if (non_stop) |
5b6d1e4f PA |
2829 | { |
2830 | if (all_threads) | |
2831 | { | |
2832 | scoped_restore_current_thread restore_thread; | |
2833 | ||
2834 | for (inferior *inf : all_inferiors ()) | |
2835 | { | |
2836 | switch_to_inferior_no_thread (inf); | |
2837 | stop_current_target_threads_ns (minus_one_ptid); | |
2838 | } | |
2839 | } | |
2840 | else | |
2841 | stop_current_target_threads_ns (inferior_ptid); | |
2842 | } | |
2843 | else | |
2844 | target_interrupt (); | |
1192f124 SM |
2845 | |
2846 | disable_commit_resumed.reset_and_commit (); | |
77ebaa5a VP |
2847 | } |
2848 | ||
6339bfc4 DE |
2849 | /* interrupt [-a] |
2850 | Stop the execution of the target while running in async mode, in | |
17e5269b | 2851 | the background. In all-stop, stop the whole process. In non-stop |
8cae4b3f PA |
2852 | mode, stop the current thread only by default, or stop all threads |
2853 | if the `-a' switch is used. */ | |
2854 | ||
1dd5fedc | 2855 | static void |
0b39b52e | 2856 | interrupt_command (const char *args, int from_tty) |
43ff13b4 | 2857 | { |
362646f5 | 2858 | if (target_can_async_p ()) |
43ff13b4 | 2859 | { |
8cae4b3f PA |
2860 | int all_threads = 0; |
2861 | ||
1777feb0 | 2862 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 2863 | |
8cae4b3f | 2864 | if (args != NULL |
61012eef | 2865 | && startswith (args, "-a")) |
8cae4b3f PA |
2866 | all_threads = 1; |
2867 | ||
2868 | if (!non_stop && all_threads) | |
2869 | error (_("-a is meaningless in all-stop mode.")); | |
2870 | ||
77ebaa5a | 2871 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
2872 | } |
2873 | } | |
2874 | ||
cc86d1cb YQ |
2875 | /* See inferior.h. */ |
2876 | ||
2877 | void | |
2878 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
2879 | struct frame_info *frame, const char *args) | |
c906108c | 2880 | { |
cc86d1cb YQ |
2881 | int regnum; |
2882 | int printed_something = 0; | |
d80b854b | 2883 | |
f6efe3f8 | 2884 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
23e3a7ac | 2885 | { |
cc86d1cb | 2886 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 2887 | { |
cc86d1cb YQ |
2888 | printed_something = 1; |
2889 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 2890 | } |
23e3a7ac | 2891 | } |
cc86d1cb YQ |
2892 | if (!printed_something) |
2893 | fprintf_filtered (file, "No floating-point info " | |
2894 | "available for this processor.\n"); | |
23e3a7ac AC |
2895 | } |
2896 | ||
2897 | static void | |
1d12d88f | 2898 | info_float_command (const char *args, int from_tty) |
23e3a7ac | 2899 | { |
cc86d1cb YQ |
2900 | struct frame_info *frame; |
2901 | ||
9dccd06e | 2902 | if (!target_has_registers ()) |
206415a3 DJ |
2903 | error (_("The program has no registers now.")); |
2904 | ||
cc86d1cb YQ |
2905 | frame = get_selected_frame (NULL); |
2906 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
2907 | } |
2908 | \f | |
145b16a9 UW |
2909 | /* Implement `info proc' family of commands. */ |
2910 | ||
2911 | static void | |
69f476a3 | 2912 | info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty) |
145b16a9 | 2913 | { |
3030c96e UW |
2914 | struct gdbarch *gdbarch = get_current_arch (); |
2915 | ||
451b7c33 TT |
2916 | if (!target_info_proc (args, what)) |
2917 | { | |
2918 | if (gdbarch_info_proc_p (gdbarch)) | |
2919 | gdbarch_info_proc (gdbarch, args, what); | |
2920 | else | |
2921 | error (_("Not supported on this target.")); | |
2922 | } | |
145b16a9 UW |
2923 | } |
2924 | ||
85102364 | 2925 | /* Implement `info proc' when given without any further parameters. */ |
145b16a9 UW |
2926 | |
2927 | static void | |
981a3fb3 | 2928 | info_proc_cmd (const char *args, int from_tty) |
145b16a9 UW |
2929 | { |
2930 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
2931 | } | |
2932 | ||
2933 | /* Implement `info proc mappings'. */ | |
2934 | ||
2935 | static void | |
69f476a3 | 2936 | info_proc_cmd_mappings (const char *args, int from_tty) |
145b16a9 UW |
2937 | { |
2938 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
2939 | } | |
2940 | ||
2941 | /* Implement `info proc stat'. */ | |
2942 | ||
2943 | static void | |
69f476a3 | 2944 | info_proc_cmd_stat (const char *args, int from_tty) |
145b16a9 UW |
2945 | { |
2946 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
2947 | } | |
2948 | ||
2949 | /* Implement `info proc status'. */ | |
2950 | ||
2951 | static void | |
69f476a3 | 2952 | info_proc_cmd_status (const char *args, int from_tty) |
145b16a9 UW |
2953 | { |
2954 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
2955 | } | |
2956 | ||
2957 | /* Implement `info proc cwd'. */ | |
2958 | ||
2959 | static void | |
69f476a3 | 2960 | info_proc_cmd_cwd (const char *args, int from_tty) |
145b16a9 UW |
2961 | { |
2962 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
2963 | } | |
2964 | ||
2965 | /* Implement `info proc cmdline'. */ | |
2966 | ||
2967 | static void | |
69f476a3 | 2968 | info_proc_cmd_cmdline (const char *args, int from_tty) |
145b16a9 UW |
2969 | { |
2970 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
2971 | } | |
2972 | ||
2973 | /* Implement `info proc exe'. */ | |
2974 | ||
2975 | static void | |
69f476a3 | 2976 | info_proc_cmd_exe (const char *args, int from_tty) |
145b16a9 UW |
2977 | { |
2978 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
2979 | } | |
2980 | ||
e98ee8c4 JB |
2981 | /* Implement `info proc files'. */ |
2982 | ||
2983 | static void | |
2984 | info_proc_cmd_files (const char *args, int from_tty) | |
2985 | { | |
2986 | info_proc_cmd_1 (args, IP_FILES, from_tty); | |
2987 | } | |
2988 | ||
145b16a9 UW |
2989 | /* Implement `info proc all'. */ |
2990 | ||
2991 | static void | |
69f476a3 | 2992 | info_proc_cmd_all (const char *args, int from_tty) |
145b16a9 UW |
2993 | { |
2994 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
2995 | } | |
2996 | ||
000439d5 TT |
2997 | /* Implement `show print finish'. */ |
2998 | ||
2999 | static void | |
3000 | show_print_finish (struct ui_file *file, int from_tty, | |
3001 | struct cmd_list_element *c, | |
3002 | const char *value) | |
3003 | { | |
3004 | fprintf_filtered (file, _("\ | |
3005 | Printing of return value after `finish' is %s.\n"), | |
3006 | value); | |
3007 | } | |
3008 | ||
3009 | ||
4e5a4f58 JB |
3010 | /* This help string is used for the run, start, and starti commands. |
3011 | It is defined as a macro to prevent duplication. */ | |
3012 | ||
3013 | #define RUN_ARGS_HELP \ | |
3014 | "You may specify arguments to give it.\n\ | |
3015 | Args may include \"*\", or \"[...]\"; they are expanded using the\n\ | |
3016 | shell that will start the program (specified by the \"$SHELL\" environment\n\ | |
3017 | variable). Input and output redirection with \">\", \"<\", or \">>\"\n\ | |
3018 | are also allowed.\n\ | |
3019 | \n\ | |
3020 | With no arguments, uses arguments last specified (with \"run\" or \n\ | |
3021 | \"set args\"). To cancel previous arguments and run with no arguments,\n\ | |
3022 | use \"set args\" without arguments.\n\ | |
3023 | \n\ | |
3024 | To start the inferior without using a shell, use \"set startup-with-shell off\"." | |
3025 | ||
6c265988 | 3026 | void _initialize_infcmd (); |
c906108c | 3027 | void |
6c265988 | 3028 | _initialize_infcmd () |
c906108c | 3029 | { |
145b16a9 | 3030 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3031 | struct cmd_list_element *c = NULL; |
6f937416 | 3032 | const char *cmd_name; |
3cb3b8df | 3033 | |
1777feb0 | 3034 | /* Add the filename of the terminal connected to inferior I/O. */ |
0a1ddfa6 SM |
3035 | add_setshow_optional_filename_cmd ("inferior-tty", class_run, |
3036 | &inferior_io_terminal_scratch, _("\ | |
3cb3b8df BR |
3037 | Set terminal for future runs of program being debugged."), _("\ |
3038 | Show terminal for future runs of program being debugged."), _("\ | |
0a1ddfa6 SM |
3039 | Usage: set inferior-tty [TTY]\n\n\ |
3040 | If TTY is omitted, the default behavior of using the same terminal as GDB\n\ | |
3041 | is restored."), | |
3042 | set_inferior_tty_command, | |
3043 | show_inferior_tty_command, | |
3044 | &setlist, &showlist); | |
21873064 | 3045 | cmd_name = "inferior-tty"; |
cf00cd6f | 3046 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
21873064 | 3047 | gdb_assert (c != NULL); |
57b4f16e | 3048 | add_alias_cmd ("tty", c, class_run, 0, &cmdlist); |
c906108c | 3049 | |
6ace3df1 YQ |
3050 | cmd_name = "args"; |
3051 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3052 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3053 | Set argument list to give program being debugged when it is started."), _("\ |
3054 | Show argument list to give program being debugged when it is started."), _("\ | |
3055 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3056 | set_args_command, |
3057 | show_args_command, | |
3058 | &setlist, &showlist); | |
cf00cd6f | 3059 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
6ace3df1 YQ |
3060 | gdb_assert (c != NULL); |
3061 | set_cmd_completer (c, filename_completer); | |
c906108c | 3062 | |
d092c5a2 SDJ |
3063 | cmd_name = "cwd"; |
3064 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3065 | &inferior_cwd_scratch, _("\ | |
3066 | Set the current working directory to be used when the inferior is started.\n\ | |
3067 | Changing this setting does not have any effect on inferiors that are\n\ | |
3068 | already running."), | |
3069 | _("\ | |
3070 | Show the current working directory that is used when the inferior is started."), | |
3071 | _("\ | |
3072 | Use this command to change the current working directory that will be used\n\ | |
3073 | when the inferior is started. This setting does not affect GDB's current\n\ | |
3074 | working directory."), | |
3075 | set_cwd_command, | |
3076 | show_cwd_command, | |
3077 | &setlist, &showlist); | |
cf00cd6f | 3078 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
d092c5a2 SDJ |
3079 | gdb_assert (c != NULL); |
3080 | set_cmd_completer (c, filename_completer); | |
3081 | ||
1a966eab AC |
3082 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3083 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3084 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3085 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3086 | environment to be given to the program."), &showlist); |
5ba2abeb | 3087 | set_cmd_completer (c, noop_completer); |
c906108c | 3088 | |
0743fc83 TT |
3089 | add_basic_prefix_cmd ("unset", no_class, |
3090 | _("Complement to certain \"set\" commands."), | |
2f822da5 | 3091 | &unsetlist, 0, &cmdlist); |
c5aa993b | 3092 | |
1a966eab AC |
3093 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3094 | Cancel environment variable VAR for the program.\n\ | |
3095 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3096 | &unsetlist); |
5ba2abeb | 3097 | set_cmd_completer (c, noop_completer); |
c906108c | 3098 | |
1a966eab AC |
3099 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3100 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3101 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3102 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3103 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3104 | &setlist); |
5ba2abeb | 3105 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3106 | |
1bedd215 AC |
3107 | c = add_com ("path", class_files, path_command, _("\ |
3108 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3109 | $cwd in the path means the current working directory.\n\ |
3110 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3111 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3112 | fully linked executable files and separately compiled object files as \ |
3113 | needed.")); | |
5ba2abeb | 3114 | set_cmd_completer (c, filename_completer); |
c906108c | 3115 | |
1a966eab AC |
3116 | c = add_cmd ("paths", no_class, path_info, _("\ |
3117 | Current search path for finding 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."), | |
c906108c | 3123 | &showlist); |
5ba2abeb | 3124 | set_cmd_completer (c, noop_completer); |
c906108c | 3125 | |
2277426b PA |
3126 | add_prefix_cmd ("kill", class_run, kill_command, |
3127 | _("Kill execution of program being debugged."), | |
2f822da5 | 3128 | &killlist, 0, &cmdlist); |
5fd62852 | 3129 | |
1bedd215 AC |
3130 | add_com ("attach", class_run, attach_command, _("\ |
3131 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3132 | This command attaches to another target, of the same type as your last\n\ |
3133 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3134 | The command may take as argument a process id or a device file.\n\ | |
3135 | For a process id, you must have permission to send the process a signal,\n\ | |
3136 | and it must have the same effective uid as the debugger.\n\ | |
3137 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3138 | program running in the process, looking first in the current working\n\ | |
3139 | directory, or (if not found there) using the source file search path\n\ | |
3140 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3141 | to specify the program, and to load its symbol table.")); |
c906108c | 3142 | |
f73adfeb | 3143 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3144 | Detach a process or file previously attached.\n\ |
c906108c | 3145 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb | 3146 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
2f822da5 | 3147 | &detachlist, 0, &cmdlist); |
c906108c | 3148 | |
1bedd215 AC |
3149 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3150 | Disconnect from a target.\n\ | |
6ad8ae5c | 3151 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3152 | all targets.")); |
6ad8ae5c | 3153 | |
de0bea00 | 3154 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3155 | Continue program with the specified signal.\n\ |
3156 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3157 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3158 | \n\ |
3159 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3160 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3161 | and you want to resume the program while discarding the signal.\n\ |
3162 | \n\ | |
3163 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3164 | the current thread only.")); | |
3165 | set_cmd_completer (c, signal_completer); | |
3166 | ||
3167 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3168 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3169 | Usage: queue-signal SIGNAL\n\ | |
3170 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3171 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3172 | \n\ | |
3173 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3174 | the current thread. This is useful in cases where the program stopped\n\ | |
3175 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3176 | \n\ | |
3177 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3178 | the current thread only.")); | |
de0bea00 | 3179 | set_cmd_completer (c, signal_completer); |
c906108c | 3180 | |
3947f654 SM |
3181 | cmd_list_element *stepi_cmd |
3182 | = add_com ("stepi", class_run, stepi_command, _("\ | |
1bedd215 | 3183 | Step one instruction exactly.\n\ |
486c7739 MF |
3184 | Usage: stepi [N]\n\ |
3185 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3186 | reason).")); |
3947f654 | 3187 | add_com_alias ("si", stepi_cmd, class_run, 0); |
c906108c | 3188 | |
3947f654 SM |
3189 | cmd_list_element *nexti_cmd |
3190 | = add_com ("nexti", class_run, nexti_command, _("\ | |
1bedd215 | 3191 | Step one instruction, but proceed through subroutine calls.\n\ |
486c7739 MF |
3192 | Usage: nexti [N]\n\ |
3193 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3194 | reason).")); |
3947f654 | 3195 | add_com_alias ("ni", nexti_cmd, class_run, 0); |
c906108c | 3196 | |
3947f654 SM |
3197 | cmd_list_element *finish_cmd |
3198 | = add_com ("finish", class_run, finish_command, _("\ | |
1bedd215 | 3199 | Execute until selected stack frame returns.\n\ |
486c7739 | 3200 | Usage: finish\n\ |
1bedd215 | 3201 | Upon return, the value returned is printed and put in the value history.")); |
3947f654 | 3202 | add_com_alias ("fin", finish_cmd, class_run, 1); |
c906108c | 3203 | |
3947f654 SM |
3204 | cmd_list_element *next_cmd |
3205 | = add_com ("next", class_run, next_command, _("\ | |
1bedd215 | 3206 | Step program, proceeding through subroutine calls.\n\ |
486c7739 MF |
3207 | Usage: next [N]\n\ |
3208 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3209 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3210 | the call, in effect treating it as a single source line.")); |
3947f654 | 3211 | add_com_alias ("n", next_cmd, class_run, 1); |
c906108c | 3212 | |
3947f654 SM |
3213 | cmd_list_element *step_cmd |
3214 | = add_com ("step", class_run, step_command, _("\ | |
1bedd215 | 3215 | Step program until it reaches a different source line.\n\ |
486c7739 MF |
3216 | Usage: step [N]\n\ |
3217 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3218 | reason).")); |
3947f654 | 3219 | add_com_alias ("s", step_cmd, class_run, 1); |
c906108c | 3220 | |
3947f654 SM |
3221 | cmd_list_element *until_cmd |
3222 | = add_com ("until", class_run, until_command, _("\ | |
590042fc | 3223 | Execute until past the current line or past a LOCATION.\n\ |
1bedd215 | 3224 | Execute until the program reaches a source line greater than the current\n\ |
3e43a32a MS |
3225 | or a specified location (same args as break command) within the current \ |
3226 | frame.")); | |
3947f654 SM |
3227 | set_cmd_completer (until_cmd, location_completer); |
3228 | add_com_alias ("u", until_cmd, class_run, 1); | |
c5aa993b | 3229 | |
1bedd215 | 3230 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3231 | Continue the program up to the given location (same form as args for break \ |
3232 | command).\n\ | |
1bedd215 | 3233 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3234 | set_cmd_completer (c, location_completer); |
3235 | ||
3947f654 SM |
3236 | cmd_list_element *jump_cmd |
3237 | = add_com ("jump", class_run, jump_command, _("\ | |
1bedd215 | 3238 | Continue program being debugged at specified line or address.\n\ |
0a8ba311 | 3239 | Usage: jump LOCATION\n\ |
c906108c | 3240 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3241 | for an address to start at.")); |
3947f654 SM |
3242 | set_cmd_completer (jump_cmd, location_completer); |
3243 | add_com_alias ("j", jump_cmd, class_run, 1); | |
c906108c | 3244 | |
3947f654 SM |
3245 | cmd_list_element *continue_cmd |
3246 | = add_com ("continue", class_run, continue_command, _("\ | |
1bedd215 | 3247 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3248 | Usage: continue [N]\n\ |
c906108c SS |
3249 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3250 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3251 | the breakpoint won't break until the Nth time it is reached).\n\ |
3252 | \n\ | |
3253 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3254 | otherwise all the threads in the program are continued. To \n\ | |
3255 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3256 | Specifying -a and an ignore count simultaneously is an error.")); | |
3947f654 SM |
3257 | add_com_alias ("c", continue_cmd, class_run, 1); |
3258 | add_com_alias ("fg", continue_cmd, class_run, 1); | |
c906108c | 3259 | |
3947f654 SM |
3260 | cmd_list_element *run_cmd |
3261 | = add_com ("run", class_run, run_command, _("\ | |
4e5a4f58 JB |
3262 | Start debugged program.\n" |
3263 | RUN_ARGS_HELP)); | |
3947f654 SM |
3264 | set_cmd_completer (run_cmd, filename_completer); |
3265 | add_com_alias ("r", run_cmd, 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 | |
e0f25bd9 SM |
3283 | cmd_list_element *info_registers_cmd |
3284 | = add_info ("registers", info_registers_command, _("\ | |
1bedd215 | 3285 | List of integer registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3286 | One or more register names as argument means describe the given registers.\n\ |
3287 | One or more register group names as argument means describe the registers\n\ | |
3288 | in the named register groups.")); | |
e0f25bd9 SM |
3289 | add_info_alias ("r", info_registers_cmd, 1); |
3290 | set_cmd_completer (info_registers_cmd, reg_or_group_completer); | |
c906108c | 3291 | |
11db9430 | 3292 | c = add_info ("all-registers", info_all_registers_command, _("\ |
1bedd215 | 3293 | List of all registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3294 | One or more register names as argument means describe the given registers.\n\ |
3295 | One or more register group names as argument means describe the registers\n\ | |
3296 | in the named register groups.")); | |
71c24708 | 3297 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3298 | |
11db9430 | 3299 | add_info ("program", info_program_command, |
1bedd215 | 3300 | _("Execution status of the program.")); |
c906108c | 3301 | |
11db9430 | 3302 | add_info ("float", info_float_command, |
590042fc | 3303 | _("Print the status of the floating point unit.")); |
c906108c | 3304 | |
11db9430 | 3305 | add_info ("vector", info_vector_command, |
590042fc | 3306 | _("Print the status of the vector unit.")); |
145b16a9 UW |
3307 | |
3308 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3309 | _("\ | |
73f1bd76 | 3310 | Show additional information about a process.\n\ |
145b16a9 | 3311 | Specify any process id, or use the program being debugged by default."), |
2f822da5 | 3312 | &info_proc_cmdlist, |
145b16a9 UW |
3313 | 1/*allow-unknown*/, &infolist); |
3314 | ||
3315 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
73f1bd76 | 3316 | List memory regions mapped by the specified process."), |
145b16a9 UW |
3317 | &info_proc_cmdlist); |
3318 | ||
3319 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3320 | List process info from /proc/PID/stat."), | |
3321 | &info_proc_cmdlist); | |
3322 | ||
3323 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3324 | List process info from /proc/PID/status."), | |
3325 | &info_proc_cmdlist); | |
3326 | ||
3327 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
73f1bd76 | 3328 | List current working directory of the specified process."), |
145b16a9 UW |
3329 | &info_proc_cmdlist); |
3330 | ||
3331 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
73f1bd76 | 3332 | List command line arguments of the specified process."), |
145b16a9 UW |
3333 | &info_proc_cmdlist); |
3334 | ||
3335 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
73f1bd76 | 3336 | List absolute filename for executable of the specified process."), |
145b16a9 UW |
3337 | &info_proc_cmdlist); |
3338 | ||
e98ee8c4 JB |
3339 | add_cmd ("files", class_info, info_proc_cmd_files, _("\ |
3340 | List files opened by the specified process."), | |
3341 | &info_proc_cmdlist); | |
3342 | ||
145b16a9 | 3343 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ |
73f1bd76 | 3344 | List all available info about the specified process."), |
145b16a9 | 3345 | &info_proc_cmdlist); |
000439d5 TT |
3346 | |
3347 | add_setshow_boolean_cmd ("finish", class_support, | |
3348 | &user_print_options.finish_print, _("\ | |
3349 | Set whether `finish' prints the return value."), _("\ | |
3350 | Show whether `finish' prints the return value."), NULL, | |
3351 | NULL, | |
3352 | show_print_finish, | |
3353 | &setprintlist, &showprintlist); | |
c906108c | 3354 | } |