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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
4a94e368 | 3 | Copyright (C) 1986-2022 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 | |
e0700ba4 | 74 | static std::string inferior_args_scratch; |
c906108c | 75 | |
d092c5a2 SDJ |
76 | /* Scratch area where the new cwd will be stored by 'set cwd'. */ |
77 | ||
e0700ba4 | 78 | static std::string inferior_cwd_scratch; |
d092c5a2 | 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 | |
e0700ba4 | 83 | static std::string 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. */ | |
4e93ea6e | 118 | const std::string &inferior_tty = current_inferior ()->tty (); |
abbb1732 | 119 | |
6cb06a8c TT |
120 | gdb_printf (file, |
121 | _("Terminal for future runs of program being debugged " | |
122 | "is \"%s\".\n"), inferior_tty.c_str ()); | |
3cb3b8df BR |
123 | } |
124 | ||
552c04a7 TT |
125 | void |
126 | set_inferior_args_vector (int argc, char **argv) | |
127 | { | |
a69e37dc SM |
128 | gdb::array_view<char * const> args (argv, argc); |
129 | std::string n = construct_inferior_arguments (args); | |
fd2dec2a | 130 | current_inferior ()->set_args (std::move (n)); |
552c04a7 TT |
131 | } |
132 | ||
133 | /* Notice when `set args' is run. */ | |
6339bfc4 | 134 | |
552c04a7 | 135 | static void |
eb4c3f4a | 136 | set_args_command (const char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 137 | { |
3f81c18a VP |
138 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
139 | Now route it to current inferior. */ | |
e5169525 | 140 | current_inferior ()->set_args (inferior_args_scratch); |
552c04a7 TT |
141 | } |
142 | ||
143 | /* Notice when `show args' is run. */ | |
6339bfc4 | 144 | |
552c04a7 | 145 | static void |
3f81c18a VP |
146 | show_args_command (struct ui_file *file, int from_tty, |
147 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 148 | { |
258c00cc TT |
149 | /* Note that we ignore the passed-in value in favor of computing it |
150 | directly. */ | |
e5169525 | 151 | deprecated_show_value_hack (file, from_tty, c, |
fd2dec2a | 152 | current_inferior ()->args ().c_str ()); |
552c04a7 TT |
153 | } |
154 | ||
268a13a5 | 155 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 | 156 | |
11bd012e | 157 | const std::string & |
d092c5a2 SDJ |
158 | get_inferior_cwd () |
159 | { | |
90cc31c9 | 160 | return current_inferior ()->cwd (); |
d092c5a2 SDJ |
161 | } |
162 | ||
163 | /* Handle the 'set cwd' command. */ | |
164 | ||
165 | static void | |
eb4c3f4a | 166 | set_cwd_command (const char *args, int from_tty, struct cmd_list_element *c) |
d092c5a2 | 167 | { |
11bd012e | 168 | current_inferior ()->set_cwd (inferior_cwd_scratch); |
d092c5a2 SDJ |
169 | } |
170 | ||
171 | /* Handle the 'show cwd' command. */ | |
172 | ||
173 | static void | |
174 | show_cwd_command (struct ui_file *file, int from_tty, | |
175 | struct cmd_list_element *c, const char *value) | |
176 | { | |
11bd012e | 177 | const std::string &cwd = current_inferior ()->cwd (); |
d092c5a2 | 178 | |
11bd012e | 179 | if (cwd.empty ()) |
6cb06a8c TT |
180 | gdb_printf (file, |
181 | _("\ | |
d092c5a2 | 182 | You have not set the inferior's current working directory.\n\ |
bc3b087d SDJ |
183 | The inferior will inherit GDB's cwd if native debugging, or the remote\n\ |
184 | server's cwd if remote debugging.\n")); | |
d092c5a2 | 185 | else |
6cb06a8c TT |
186 | gdb_printf (file, |
187 | _("Current working directory that will be used " | |
188 | "when starting the inferior is \"%s\".\n"), | |
189 | cwd.c_str ()); | |
d092c5a2 SDJ |
190 | } |
191 | ||
552c04a7 | 192 | |
6c4486e6 PA |
193 | /* This function strips the '&' character (indicating background |
194 | execution) that is added as *the last* of the arguments ARGS of a | |
195 | command. A copy of the incoming ARGS without the '&' is returned, | |
196 | unless the resulting string after stripping is empty, in which case | |
197 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
198 | whether the '&' character was found. */ | |
6339bfc4 | 199 | |
6be9a197 | 200 | static gdb::unique_xmalloc_ptr<char> |
6c4486e6 | 201 | strip_bg_char (const char *args, int *bg_char_p) |
43ff13b4 | 202 | { |
6c4486e6 | 203 | const char *p; |
c5aa993b | 204 | |
6c4486e6 PA |
205 | if (args == NULL || *args == '\0') |
206 | { | |
207 | *bg_char_p = 0; | |
208 | return NULL; | |
209 | } | |
c5aa993b | 210 | |
6c4486e6 PA |
211 | p = args + strlen (args); |
212 | if (p[-1] == '&') | |
43ff13b4 | 213 | { |
6c4486e6 PA |
214 | p--; |
215 | while (p > args && isspace (p[-1])) | |
216 | p--; | |
217 | ||
218 | *bg_char_p = 1; | |
219 | if (p != args) | |
6be9a197 TT |
220 | return gdb::unique_xmalloc_ptr<char> |
221 | (savestring (args, p - args)); | |
6c4486e6 | 222 | else |
6be9a197 | 223 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
43ff13b4 | 224 | } |
6c4486e6 PA |
225 | |
226 | *bg_char_p = 0; | |
b02f78f9 | 227 | return make_unique_xstrdup (args); |
43ff13b4 JM |
228 | } |
229 | ||
281b533b DJ |
230 | /* Common actions to take after creating any sort of inferior, by any |
231 | means (running, attaching, connecting, et cetera). The target | |
232 | should be stopped. */ | |
233 | ||
234 | void | |
a7aba266 | 235 | post_create_inferior (int from_tty) |
281b533b | 236 | { |
ce406537 | 237 | |
b79599ff | 238 | /* Be sure we own the terminal in case write operations are performed. */ |
223ffa71 | 239 | target_terminal::ours_for_output (); |
b79599ff | 240 | |
424163ea DJ |
241 | /* If the target hasn't taken care of this already, do it now. |
242 | Targets which need to access registers during to_open, | |
243 | to_create_inferior, or to_attach should do it earlier; but many | |
244 | don't need to. */ | |
245 | target_find_description (); | |
246 | ||
ce406537 PA |
247 | /* Now that we know the register layout, retrieve current PC. But |
248 | if the PC is unavailable (e.g., we're opening a core file with | |
249 | missing registers info), ignore it. */ | |
f2ffa92b PA |
250 | thread_info *thr = inferior_thread (); |
251 | ||
351031f2 | 252 | thr->clear_stop_pc (); |
a70b8144 | 253 | try |
ce406537 | 254 | { |
8dc3273e | 255 | regcache *rc = get_thread_regcache (thr); |
1edb66d8 | 256 | thr->set_stop_pc (regcache_read_pc (rc)); |
ce406537 | 257 | } |
230d2906 | 258 | catch (const gdb_exception_error &ex) |
7556d4a4 PA |
259 | { |
260 | if (ex.error != NOT_AVAILABLE_ERROR) | |
eedc3f4f | 261 | throw; |
7556d4a4 | 262 | } |
f698437e | 263 | |
7e10abd1 | 264 | if (current_program_space->exec_bfd ()) |
50c71eaf | 265 | { |
2eff07b3 PP |
266 | const unsigned solib_add_generation |
267 | = current_program_space->solib_add_generation; | |
268 | ||
122373f7 SM |
269 | scoped_restore restore_in_initial_library_scan |
270 | = make_scoped_restore (¤t_inferior ()->in_initial_library_scan, | |
271 | true); | |
272 | ||
9353355f DJ |
273 | /* Create the hooks to handle shared library load and unload |
274 | events. */ | |
268a4a75 | 275 | solib_create_inferior_hook (from_tty); |
268a4a75 | 276 | |
2eff07b3 PP |
277 | if (current_program_space->solib_add_generation == solib_add_generation) |
278 | { | |
279 | /* The platform-specific hook should load initial shared libraries, | |
280 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
281 | targets should be fixed anyway. Call it only after the solib | |
282 | target has been initialized by solib_create_inferior_hook. */ | |
283 | ||
284 | if (info_verbose) | |
285 | warning (_("platform-specific solib_create_inferior_hook did " | |
286 | "not load initial shared libraries.")); | |
287 | ||
288 | /* If the solist is global across processes, there's no need to | |
289 | refetch it here. */ | |
f5656ead | 290 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 291 | solib_add (NULL, 0, auto_solib_add); |
2eff07b3 | 292 | } |
9353355f DJ |
293 | } |
294 | ||
ea5d7a99 PM |
295 | /* If the user sets watchpoints before execution having started, |
296 | then she gets software watchpoints, because GDB can't know which | |
297 | target will end up being pushed, or if it supports hardware | |
298 | watchpoints or not. breakpoint_re_set takes care of promoting | |
299 | watchpoints to hardware watchpoints if possible, however, if this | |
300 | new inferior doesn't load shared libraries or we don't pull in | |
301 | symbols from any other source on this target/arch, | |
302 | breakpoint_re_set is never called. Call it now so that software | |
303 | watchpoints get a chance to be promoted to hardware watchpoints | |
304 | if the now pushed target supports hardware watchpoints. */ | |
305 | breakpoint_re_set (); | |
306 | ||
a0ff652f | 307 | gdb::observers::inferior_created.notify (current_inferior ()); |
281b533b DJ |
308 | } |
309 | ||
a4d5f2e0 JB |
310 | /* Kill the inferior if already running. This function is designed |
311 | to be called when we are about to start the execution of the program | |
312 | from the beginning. Ask the user to confirm that he wants to restart | |
313 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 314 | |
8edfe269 | 315 | static void |
a4d5f2e0 JB |
316 | kill_if_already_running (int from_tty) |
317 | { | |
55f6301a | 318 | if (inferior_ptid != null_ptid && target_has_execution ()) |
c906108c | 319 | { |
8edfe269 DJ |
320 | /* Bail out before killing the program if we will not be able to |
321 | restart it. */ | |
322 | target_require_runnable (); | |
323 | ||
adf40b2e | 324 | if (from_tty |
9e2f0ad4 HZ |
325 | && !query (_("The program being debugged has been started already.\n\ |
326 | Start it from the beginning? "))) | |
8a3fe4f8 | 327 | error (_("Program not restarted.")); |
c906108c | 328 | target_kill (); |
c906108c | 329 | } |
a4d5f2e0 JB |
330 | } |
331 | ||
329ea579 | 332 | /* See inferior.h. */ |
8bc2fe48 | 333 | |
329ea579 | 334 | void |
8bc2fe48 PA |
335 | prepare_execution_command (struct target_ops *target, int background) |
336 | { | |
337 | /* If we get a request for running in the bg but the target | |
338 | doesn't support it, error out. */ | |
0c1e6e26 | 339 | if (background && !target_can_async_p (target)) |
8bc2fe48 PA |
340 | error (_("Asynchronous execution not supported on this target.")); |
341 | ||
0b333c5e | 342 | if (!background) |
8bc2fe48 | 343 | { |
0b333c5e PA |
344 | /* If we get a request for running in the fg, then we need to |
345 | simulate synchronous (fg) execution. Note no cleanup is | |
346 | necessary for this. stdin is re-enabled whenever an error | |
347 | reaches the top level. */ | |
a8836c93 | 348 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
349 | } |
350 | } | |
351 | ||
4e5a4f58 JB |
352 | /* Determine how the new inferior will behave. */ |
353 | ||
354 | enum run_how | |
355 | { | |
356 | /* Run program without any explicit stop during startup. */ | |
357 | RUN_NORMAL, | |
358 | ||
359 | /* Stop at the beginning of the program's main function. */ | |
360 | RUN_STOP_AT_MAIN, | |
361 | ||
362 | /* Stop at the first instruction of the program. */ | |
363 | RUN_STOP_AT_FIRST_INSN | |
364 | }; | |
365 | ||
366 | /* Implement the "run" command. Force a stop during program start if | |
367 | requested by RUN_HOW. */ | |
f67a969f | 368 | |
a4d5f2e0 | 369 | static void |
0b39b52e | 370 | run_command_1 (const char *args, int from_tty, enum run_how run_how) |
a4d5f2e0 | 371 | { |
7c5ded6a | 372 | const char *exec_file; |
79a45e25 | 373 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 374 | struct target_ops *run_target; |
6c4486e6 | 375 | int async_exec; |
c906108c | 376 | |
a4d5f2e0 JB |
377 | dont_repeat (); |
378 | ||
1192f124 SM |
379 | scoped_disable_commit_resumed disable_commit_resumed ("running"); |
380 | ||
a4d5f2e0 | 381 | kill_if_already_running (from_tty); |
3c35e65b UW |
382 | |
383 | init_wait_for_inferior (); | |
c906108c SS |
384 | clear_breakpoint_hit_counts (); |
385 | ||
fd79ecee DJ |
386 | /* Clean up any leftovers from other runs. Some other things from |
387 | this function should probably be moved into target_pre_inferior. */ | |
388 | target_pre_inferior (from_tty); | |
389 | ||
39ad761d JB |
390 | /* The comment here used to read, "The exec file is re-read every |
391 | time we do a generic_mourn_inferior, so we just have to worry | |
392 | about the symbol file." The `generic_mourn_inferior' function | |
393 | gets called whenever the program exits. However, suppose the | |
394 | program exits, and *then* the executable file changes? We need | |
395 | to check again here. Since reopen_exec_file doesn't do anything | |
396 | if the timestamp hasn't changed, I don't see the harm. */ | |
397 | reopen_exec_file (); | |
9dec38d3 | 398 | reread_symbols (from_tty); |
c906108c | 399 | |
6be9a197 TT |
400 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
401 | args = stripped.get (); | |
f67a969f | 402 | |
8bc2fe48 PA |
403 | /* Do validation and preparation before possibly changing anything |
404 | in the inferior. */ | |
39ad761d | 405 | |
b3ccfe11 TT |
406 | run_target = find_run_target (); |
407 | ||
8bc2fe48 PA |
408 | prepare_execution_command (run_target, async_exec); |
409 | ||
f6ac5f3d | 410 | if (non_stop && !run_target->supports_non_stop ()) |
9908b566 VP |
411 | error (_("The target does not support running in non-stop mode.")); |
412 | ||
8bc2fe48 PA |
413 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
414 | ||
4e5a4f58 JB |
415 | /* Insert temporary breakpoint in main function if requested. */ |
416 | if (run_how == RUN_STOP_AT_MAIN) | |
e242fd12 SM |
417 | { |
418 | std::string arg = string_printf ("-qualified %s", main_name ()); | |
419 | tbreak_command (arg.c_str (), 0); | |
420 | } | |
8bc2fe48 | 421 | |
7c5ded6a | 422 | exec_file = get_exec_file (0); |
8bc2fe48 | 423 | |
c906108c SS |
424 | /* We keep symbols from add-symbol-file, on the grounds that the |
425 | user might want to add some symbols before running the program | |
426 | (right?). But sometimes (dynamic loading where the user manually | |
427 | introduces the new symbols with add-symbol-file), the code which | |
428 | the symbols describe does not persist between runs. Currently | |
429 | the user has to manually nuke all symbols between runs if they | |
430 | want them to go away (PR 2207). This is probably reasonable. */ | |
431 | ||
8bc2fe48 PA |
432 | /* If there were other args, beside '&', process them. */ |
433 | if (args != NULL) | |
e5169525 | 434 | current_inferior ()->set_args (args); |
c906108c SS |
435 | |
436 | if (from_tty) | |
437 | { | |
112e8700 SM |
438 | uiout->field_string (NULL, "Starting program"); |
439 | uiout->text (": "); | |
8b93c638 | 440 | if (exec_file) |
972f7a4b TT |
441 | uiout->field_string ("execfile", exec_file, |
442 | file_name_style.style ()); | |
112e8700 | 443 | uiout->spaces (1); |
e5169525 | 444 | uiout->field_string ("infargs", current_inferior ()->args ()); |
112e8700 SM |
445 | uiout->text ("\n"); |
446 | uiout->flush (); | |
c906108c SS |
447 | } |
448 | ||
f6ac5f3d | 449 | run_target->create_inferior (exec_file, |
e5169525 | 450 | current_inferior ()->args (), |
f6ac5f3d PA |
451 | current_inferior ()->environment.envp (), |
452 | from_tty); | |
b3ccfe11 TT |
453 | /* to_create_inferior should push the target, so after this point we |
454 | shouldn't refer to run_target again. */ | |
455 | run_target = NULL; | |
281b533b | 456 | |
29f49a6a PA |
457 | /* We're starting off a new process. When we get out of here, in |
458 | non-stop mode, finish the state of all threads of that process, | |
459 | but leave other threads alone, as they may be stopped in internal | |
460 | events --- the frontend shouldn't see them as stopped. In | |
461 | all-stop, always finish the state of all threads, as we may be | |
462 | resuming more than just the new process. */ | |
5b6d1e4f PA |
463 | process_stratum_target *finish_target; |
464 | ptid_t finish_ptid; | |
465 | if (non_stop) | |
466 | { | |
467 | finish_target = current_inferior ()->process_target (); | |
468 | finish_ptid = ptid_t (current_inferior ()->pid); | |
469 | } | |
470 | else | |
471 | { | |
472 | finish_target = nullptr; | |
473 | finish_ptid = minus_one_ptid; | |
474 | } | |
475 | scoped_finish_thread_state finish_state (finish_target, finish_ptid); | |
29f49a6a | 476 | |
de1b3c3d PA |
477 | /* Pass zero for FROM_TTY, because at this point the "run" command |
478 | has done its thing; now we are setting up the running program. */ | |
a7aba266 | 479 | post_create_inferior (0); |
281b533b | 480 | |
4e5a4f58 JB |
481 | /* Queue a pending event so that the program stops immediately. */ |
482 | if (run_how == RUN_STOP_AT_FIRST_INSN) | |
483 | { | |
484 | thread_info *thr = inferior_thread (); | |
1edb66d8 | 485 | target_waitstatus ws; |
183be222 | 486 | ws.set_stopped (GDB_SIGNAL_0); |
1edb66d8 | 487 | thr->set_pending_waitstatus (ws); |
4e5a4f58 JB |
488 | } |
489 | ||
74d1f91e JK |
490 | /* Start the target running. Do not use -1 continuation as it would skip |
491 | breakpoint right at the entry point. */ | |
64ce06e4 | 492 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 493 | |
29f49a6a PA |
494 | /* Since there was no error, there's no need to finish the thread |
495 | states here. */ | |
731f534f | 496 | finish_state.release (); |
1192f124 SM |
497 | |
498 | disable_commit_resumed.reset_and_commit (); | |
29f49a6a | 499 | } |
c906108c | 500 | |
f67a969f | 501 | static void |
0b39b52e | 502 | run_command (const char *args, int from_tty) |
f67a969f | 503 | { |
4e5a4f58 | 504 | run_command_1 (args, from_tty, RUN_NORMAL); |
f67a969f JB |
505 | } |
506 | ||
a4d5f2e0 JB |
507 | /* Start the execution of the program up until the beginning of the main |
508 | program. */ | |
509 | ||
510 | static void | |
0b39b52e | 511 | start_command (const char *args, int from_tty) |
a4d5f2e0 JB |
512 | { |
513 | /* Some languages such as Ada need to search inside the program | |
514 | minimal symbols for the location where to put the temporary | |
515 | breakpoint before starting. */ | |
516 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 517 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 518 | |
f67a969f | 519 | /* Run the program until reaching the main procedure... */ |
4e5a4f58 JB |
520 | run_command_1 (args, from_tty, RUN_STOP_AT_MAIN); |
521 | } | |
522 | ||
523 | /* Start the execution of the program stopping at the first | |
524 | instruction. */ | |
525 | ||
526 | static void | |
0b39b52e | 527 | starti_command (const char *args, int from_tty) |
4e5a4f58 JB |
528 | { |
529 | run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN); | |
a4d5f2e0 JB |
530 | } |
531 | ||
8cae4b3f PA |
532 | static int |
533 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
534 | { | |
74531fed PA |
535 | /* We go through all threads individually instead of compressing |
536 | into a single target `resume_all' request, because some threads | |
537 | may be stopped in internal breakpoints/events, or stopped waiting | |
538 | for its turn in the displaced stepping queue (that is, they are | |
539 | running && !executing). The target side has no idea about why | |
540 | the thread is stopped, so a `resume_all' command would resume too | |
541 | much. If/when GDB gains a way to tell the target `hold this | |
542 | thread stopped until I say otherwise', then we can optimize | |
543 | this. */ | |
00431a78 | 544 | if (thread->state != THREAD_STOPPED) |
8cae4b3f PA |
545 | return 0; |
546 | ||
5b6d1e4f PA |
547 | if (!thread->inf->has_execution ()) |
548 | return 0; | |
549 | ||
00431a78 | 550 | switch_to_thread (thread); |
70509625 | 551 | clear_proceed_status (0); |
64ce06e4 | 552 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
553 | return 0; |
554 | } | |
555 | ||
70221824 | 556 | static void |
d729566a PA |
557 | ensure_valid_thread (void) |
558 | { | |
00431a78 PA |
559 | if (inferior_ptid == null_ptid |
560 | || inferior_thread ()->state == THREAD_EXITED) | |
3e43a32a | 561 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
562 | } |
563 | ||
573cda03 | 564 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 565 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
566 | disallow those commands. */ |
567 | ||
70221824 | 568 | static void |
573cda03 SS |
569 | ensure_not_tfind_mode (void) |
570 | { | |
571 | if (get_traceframe_number () >= 0) | |
3e43a32a | 572 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
573 | } |
574 | ||
3d3fef6b YQ |
575 | /* Throw an error indicating the current thread is running. */ |
576 | ||
577 | static void | |
578 | error_is_running (void) | |
579 | { | |
580 | error (_("Cannot execute this command while " | |
581 | "the selected thread is running.")); | |
582 | } | |
583 | ||
584 | /* Calls error_is_running if the current thread is running. */ | |
585 | ||
586 | static void | |
587 | ensure_not_running (void) | |
588 | { | |
00431a78 | 589 | if (inferior_thread ()->state == THREAD_RUNNING) |
3d3fef6b YQ |
590 | error_is_running (); |
591 | } | |
592 | ||
77ebaa5a VP |
593 | void |
594 | continue_1 (int all_threads) | |
595 | { | |
3d488bfc | 596 | ERROR_NO_INFERIOR; |
573cda03 | 597 | ensure_not_tfind_mode (); |
3d488bfc | 598 | |
77ebaa5a VP |
599 | if (non_stop && all_threads) |
600 | { | |
601 | /* Don't error out if the current thread is running, because | |
abbb1732 | 602 | there may be other stopped threads. */ |
77ebaa5a | 603 | |
5ed8105e PA |
604 | /* Backup current thread and selected frame and restore on scope |
605 | exit. */ | |
606 | scoped_restore_current_thread restore_thread; | |
6f4cb31c SM |
607 | scoped_disable_commit_resumed disable_commit_resumed |
608 | ("continue all threads in non-stop"); | |
77ebaa5a VP |
609 | |
610 | iterate_over_threads (proceed_thread_callback, NULL); | |
611 | ||
3b12939d | 612 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
613 | { |
614 | /* If all threads in the target were already running, | |
615 | proceed_thread_callback ends up never calling proceed, | |
616 | and so nothing calls this to put the inferior's terminal | |
617 | settings in effect and remove stdin from the event loop, | |
618 | which we must when running a foreground command. E.g.: | |
619 | ||
620 | (gdb) c -a& | |
621 | Continuing. | |
622 | <all threads are running now> | |
623 | (gdb) c -a | |
624 | Continuing. | |
625 | <no thread was resumed, but the inferior now owns the terminal> | |
626 | */ | |
223ffa71 | 627 | target_terminal::inferior (); |
0ff33695 | 628 | } |
6f4cb31c SM |
629 | |
630 | disable_commit_resumed.reset_and_commit (); | |
77ebaa5a VP |
631 | } |
632 | else | |
633 | { | |
d729566a | 634 | ensure_valid_thread (); |
77ebaa5a | 635 | ensure_not_running (); |
70509625 | 636 | clear_proceed_status (0); |
64ce06e4 | 637 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
638 | } |
639 | } | |
640 | ||
8cae4b3f | 641 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 642 | |
1dd5fedc | 643 | static void |
0b39b52e | 644 | continue_command (const char *args, int from_tty) |
c906108c | 645 | { |
6c4486e6 | 646 | int async_exec; |
5b6d1e4f | 647 | bool all_threads_p = false; |
6c4486e6 | 648 | |
c906108c SS |
649 | ERROR_NO_INFERIOR; |
650 | ||
1777feb0 | 651 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
652 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
653 | args = stripped.get (); | |
43ff13b4 | 654 | |
8cae4b3f PA |
655 | if (args != NULL) |
656 | { | |
61012eef | 657 | if (startswith (args, "-a")) |
8cae4b3f | 658 | { |
5b6d1e4f | 659 | all_threads_p = true; |
8cae4b3f PA |
660 | args += sizeof ("-a") - 1; |
661 | if (*args == '\0') | |
662 | args = NULL; | |
663 | } | |
664 | } | |
665 | ||
5b6d1e4f | 666 | if (!non_stop && all_threads_p) |
8cae4b3f PA |
667 | error (_("`-a' is meaningless in all-stop mode.")); |
668 | ||
5b6d1e4f | 669 | if (args != NULL && all_threads_p) |
3e43a32a MS |
670 | error (_("Can't resume all threads and specify " |
671 | "proceed count simultaneously.")); | |
8cae4b3f PA |
672 | |
673 | /* If we have an argument left, set proceed count of breakpoint we | |
674 | stopped at. */ | |
675 | if (args != NULL) | |
c906108c | 676 | { |
313f3b21 | 677 | bpstat *bs = nullptr; |
8671a17b PA |
678 | int num, stat; |
679 | int stopped = 0; | |
347bddb7 PA |
680 | struct thread_info *tp; |
681 | ||
682 | if (non_stop) | |
00431a78 | 683 | tp = inferior_thread (); |
347bddb7 PA |
684 | else |
685 | { | |
5b6d1e4f | 686 | process_stratum_target *last_target; |
347bddb7 | 687 | ptid_t last_ptid; |
347bddb7 | 688 | |
5b6d1e4f PA |
689 | get_last_target_status (&last_target, &last_ptid, nullptr); |
690 | tp = find_thread_ptid (last_target, last_ptid); | |
347bddb7 PA |
691 | } |
692 | if (tp != NULL) | |
16c381f0 | 693 | bs = tp->control.stop_bpstat; |
8671a17b PA |
694 | |
695 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
696 | if (stat > 0) | |
697 | { | |
698 | set_ignore_count (num, | |
8cae4b3f | 699 | parse_and_eval_long (args) - 1, |
8671a17b PA |
700 | from_tty); |
701 | /* set_ignore_count prints a message ending with a period. | |
702 | So print two spaces before "Continuing.". */ | |
703 | if (from_tty) | |
6cb06a8c | 704 | gdb_printf (" "); |
8671a17b PA |
705 | stopped = 1; |
706 | } | |
707 | ||
708 | if (!stopped && from_tty) | |
c906108c | 709 | { |
6cb06a8c | 710 | gdb_printf |
c906108c SS |
711 | ("Not stopped at any breakpoint; argument ignored.\n"); |
712 | } | |
c906108c SS |
713 | } |
714 | ||
3b12939d PA |
715 | ERROR_NO_INFERIOR; |
716 | ensure_not_tfind_mode (); | |
717 | ||
5b6d1e4f | 718 | if (!non_stop || !all_threads_p) |
3b12939d PA |
719 | { |
720 | ensure_valid_thread (); | |
721 | ensure_not_running (); | |
722 | } | |
723 | ||
328d42d8 | 724 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
3b12939d | 725 | |
c906108c | 726 | if (from_tty) |
6cb06a8c | 727 | gdb_printf (_("Continuing.\n")); |
c906108c | 728 | |
5b6d1e4f | 729 | continue_1 (all_threads_p); |
c906108c SS |
730 | } |
731 | \f | |
29734269 | 732 | /* Record in TP the starting point of a "step" or "next" command. */ |
edb3359d DJ |
733 | |
734 | static void | |
29734269 | 735 | set_step_frame (thread_info *tp) |
edb3359d | 736 | { |
29734269 SM |
737 | /* This can be removed once this function no longer implicitly relies on the |
738 | inferior_ptid value. */ | |
739 | gdb_assert (inferior_ptid == tp->ptid); | |
740 | ||
51abb421 | 741 | frame_info *frame = get_current_frame (); |
edb3359d | 742 | |
51abb421 | 743 | symtab_and_line sal = find_frame_sal (frame); |
29734269 | 744 | set_step_info (tp, frame, sal); |
51abb421 PA |
745 | |
746 | CORE_ADDR pc = get_frame_pc (frame); | |
64ce06e4 | 747 | tp->control.step_start_function = find_pc_function (pc); |
edb3359d DJ |
748 | } |
749 | ||
c906108c SS |
750 | /* Step until outside of current statement. */ |
751 | ||
c906108c | 752 | static void |
0b39b52e | 753 | step_command (const char *count_string, int from_tty) |
c906108c SS |
754 | { |
755 | step_1 (0, 0, count_string); | |
756 | } | |
757 | ||
758 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
759 | ||
c906108c | 760 | static void |
0b39b52e | 761 | next_command (const char *count_string, int from_tty) |
c906108c SS |
762 | { |
763 | step_1 (1, 0, count_string); | |
764 | } | |
765 | ||
766 | /* Likewise, but step only one instruction. */ | |
767 | ||
1dd5fedc | 768 | static void |
0b39b52e | 769 | stepi_command (const char *count_string, int from_tty) |
c906108c SS |
770 | { |
771 | step_1 (0, 1, count_string); | |
772 | } | |
773 | ||
1dd5fedc | 774 | static void |
0b39b52e | 775 | nexti_command (const char *count_string, int from_tty) |
c906108c SS |
776 | { |
777 | step_1 (1, 1, count_string); | |
778 | } | |
779 | ||
243a9253 PA |
780 | /* Data for the FSM that manages the step/next/stepi/nexti |
781 | commands. */ | |
782 | ||
46e3ed7f | 783 | struct step_command_fsm : public thread_fsm |
243a9253 | 784 | { |
243a9253 PA |
785 | /* How many steps left in a "step N"-like command. */ |
786 | int count; | |
787 | ||
788 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
789 | int skip_subroutines; | |
790 | ||
791 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
792 | int single_inst; | |
243a9253 | 793 | |
46e3ed7f TT |
794 | explicit step_command_fsm (struct interp *cmd_interp) |
795 | : thread_fsm (cmd_interp) | |
796 | { | |
797 | } | |
243a9253 | 798 | |
46e3ed7f TT |
799 | void clean_up (struct thread_info *thread) override; |
800 | bool should_stop (struct thread_info *thread) override; | |
801 | enum async_reply_reason do_async_reply_reason () override; | |
243a9253 PA |
802 | }; |
803 | ||
243a9253 PA |
804 | /* Prepare for a step/next/etc. command. Any target resource |
805 | allocated here is undone in the FSM's clean_up method. */ | |
806 | ||
807 | static void | |
808 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
809 | int skip_subroutines, int single_inst, | |
810 | int count, struct thread_info *thread) | |
811 | { | |
812 | sm->skip_subroutines = skip_subroutines; | |
813 | sm->single_inst = single_inst; | |
814 | sm->count = count; | |
243a9253 PA |
815 | |
816 | /* Leave the si command alone. */ | |
817 | if (!sm->single_inst || sm->skip_subroutines) | |
818 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
819 | ||
820 | thread->control.stepping_command = 1; | |
821 | } | |
822 | ||
29734269 | 823 | static int prepare_one_step (thread_info *, struct step_command_fsm *sm); |
243a9253 | 824 | |
c906108c | 825 | static void |
0b39b52e | 826 | step_1 (int skip_subroutines, int single_inst, const char *count_string) |
c906108c | 827 | { |
243a9253 | 828 | int count; |
6c4486e6 | 829 | int async_exec; |
243a9253 PA |
830 | struct thread_info *thr; |
831 | struct step_command_fsm *step_sm; | |
c5aa993b | 832 | |
c906108c | 833 | ERROR_NO_INFERIOR; |
573cda03 | 834 | ensure_not_tfind_mode (); |
d729566a | 835 | ensure_valid_thread (); |
94cc34af | 836 | ensure_not_running (); |
43ff13b4 | 837 | |
6be9a197 TT |
838 | gdb::unique_xmalloc_ptr<char> stripped |
839 | = strip_bg_char (count_string, &async_exec); | |
840 | count_string = stripped.get (); | |
c5aa993b | 841 | |
328d42d8 | 842 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 843 | |
bb518678 | 844 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 845 | |
243a9253 | 846 | clear_proceed_status (1); |
611c83ae | 847 | |
243a9253 PA |
848 | /* Setup the execution command state machine to handle all the COUNT |
849 | steps. */ | |
850 | thr = inferior_thread (); | |
46e3ed7f | 851 | step_sm = new step_command_fsm (command_interp ()); |
573269a8 | 852 | thr->set_thread_fsm (std::unique_ptr<thread_fsm> (step_sm)); |
611c83ae | 853 | |
243a9253 PA |
854 | step_command_fsm_prepare (step_sm, skip_subroutines, |
855 | single_inst, count, thr); | |
c2d11a7d | 856 | |
0b333c5e PA |
857 | /* Do only one step for now, before returning control to the event |
858 | loop. Let the continuation figure out how many other steps we | |
859 | need to do, and handle them one at the time, through | |
860 | step_once. */ | |
29734269 | 861 | if (!prepare_one_step (thr, step_sm)) |
243a9253 PA |
862 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
863 | else | |
864 | { | |
3b12939d PA |
865 | int proceeded; |
866 | ||
243a9253 PA |
867 | /* Stepped into an inline frame. Pretend that we've |
868 | stopped. */ | |
573269a8 | 869 | thr->thread_fsm ()->clean_up (thr); |
3b12939d PA |
870 | proceeded = normal_stop (); |
871 | if (!proceeded) | |
b1a35af2 | 872 | inferior_event_handler (INF_EXEC_COMPLETE); |
3b12939d | 873 | all_uis_check_sync_execution_done (); |
243a9253 | 874 | } |
c2d11a7d | 875 | } |
c906108c | 876 | |
243a9253 PA |
877 | /* Implementation of the 'should_stop' FSM method for stepping |
878 | commands. Called after we are done with one step operation, to | |
879 | check whether we need to step again, before we print the prompt and | |
880 | return control to the user. If count is > 1, returns false, as we | |
881 | will need to keep going. */ | |
6339bfc4 | 882 | |
46e3ed7f TT |
883 | bool |
884 | step_command_fsm::should_stop (struct thread_info *tp) | |
c2d11a7d | 885 | { |
243a9253 | 886 | if (tp->control.stop_step) |
f13468d9 | 887 | { |
243a9253 PA |
888 | /* There are more steps to make, and we did stop due to |
889 | ending a stepping range. Do another step. */ | |
46e3ed7f | 890 | if (--count > 0) |
29734269 | 891 | return prepare_one_step (tp, this); |
af679fd0 | 892 | |
46e3ed7f | 893 | set_finished (); |
f107f563 | 894 | } |
af679fd0 | 895 | |
46e3ed7f | 896 | return true; |
c2d11a7d JM |
897 | } |
898 | ||
243a9253 | 899 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 | 900 | |
46e3ed7f TT |
901 | void |
902 | step_command_fsm::clean_up (struct thread_info *thread) | |
bfec99b2 | 903 | { |
46e3ed7f | 904 | if (!single_inst || skip_subroutines) |
8980e177 | 905 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 PA |
906 | } |
907 | ||
908 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
909 | commands. */ | |
910 | ||
46e3ed7f TT |
911 | enum async_reply_reason |
912 | step_command_fsm::do_async_reply_reason () | |
243a9253 PA |
913 | { |
914 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
915 | } | |
916 | ||
917 | /* Prepare for one step in "step N". The actual target resumption is | |
918 | done by the caller. Return true if we're done and should thus | |
919 | report a stop to the user. Returns false if the target needs to be | |
920 | resumed. */ | |
c2d11a7d | 921 | |
243a9253 | 922 | static int |
29734269 | 923 | prepare_one_step (thread_info *tp, struct step_command_fsm *sm) |
243a9253 | 924 | { |
29734269 SM |
925 | /* This can be removed once this function no longer implicitly relies on the |
926 | inferior_ptid value. */ | |
927 | gdb_assert (inferior_ptid == tp->ptid); | |
928 | ||
243a9253 | 929 | if (sm->count > 0) |
c906108c | 930 | { |
243a9253 PA |
931 | struct frame_info *frame = get_current_frame (); |
932 | ||
29734269 | 933 | set_step_frame (tp); |
c906108c | 934 | |
243a9253 | 935 | if (!sm->single_inst) |
c906108c | 936 | { |
1641cfcc PA |
937 | CORE_ADDR pc; |
938 | ||
edb3359d | 939 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 940 | if (!sm->skip_subroutines |
00431a78 | 941 | && inline_skipped_frames (tp)) |
edb3359d | 942 | { |
09cee04b | 943 | ptid_t resume_ptid; |
4a4c04f1 BE |
944 | const char *fn = NULL; |
945 | symtab_and_line sal; | |
946 | struct symbol *sym; | |
09cee04b PA |
947 | |
948 | /* Pretend that we've ran. */ | |
949 | resume_ptid = user_visible_resume_ptid (1); | |
5b6d1e4f | 950 | set_running (tp->inf->process_target (), resume_ptid, true); |
09cee04b | 951 | |
00431a78 | 952 | step_into_inline_frame (tp); |
4a4c04f1 BE |
953 | |
954 | frame = get_current_frame (); | |
955 | sal = find_frame_sal (frame); | |
956 | sym = get_frame_function (frame); | |
957 | ||
958 | if (sym != NULL) | |
959 | fn = sym->print_name (); | |
960 | ||
961 | if (sal.line == 0 | |
962 | || !function_name_is_marked_for_skip (fn, sal)) | |
963 | { | |
964 | sm->count--; | |
29734269 | 965 | return prepare_one_step (tp, sm); |
4a4c04f1 | 966 | } |
edb3359d DJ |
967 | } |
968 | ||
1641cfcc PA |
969 | pc = get_frame_pc (frame); |
970 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
971 | &tp->control.step_range_start, |
972 | &tp->control.step_range_end); | |
5fbbeb29 | 973 | |
340d00fb TV |
974 | /* There's a problem in gcc (PR gcc/98780) that causes missing line |
975 | table entries, which results in a too large stepping range. | |
976 | Use inlined_subroutine info to make the range more narrow. */ | |
977 | if (inline_skipped_frames (tp) > 0) | |
978 | { | |
979 | symbol *sym = inline_skipped_symbol (tp); | |
66d7f48f | 980 | if (sym->aclass () == LOC_BLOCK) |
340d00fb | 981 | { |
4aeddc50 | 982 | const block *block = sym->value_block (); |
4b8791e1 SM |
983 | if (block->end () < tp->control.step_range_end) |
984 | tp->control.step_range_end = block->end (); | |
340d00fb TV |
985 | } |
986 | } | |
987 | ||
c1e36e3e PA |
988 | tp->control.may_range_step = 1; |
989 | ||
5fbbeb29 | 990 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 991 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
992 | { |
993 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
994 | tp->control.may_range_step = 0; | |
995 | } | |
16c381f0 | 996 | else if (tp->control.step_range_end == 0) |
c906108c | 997 | { |
2c02bd72 | 998 | const char *name; |
abbb1732 | 999 | |
1641cfcc | 1000 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
1001 | &tp->control.step_range_start, |
1002 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 1003 | error (_("Cannot find bounds of current function")); |
c906108c | 1004 | |
223ffa71 | 1005 | target_terminal::ours_for_output (); |
6cb06a8c TT |
1006 | gdb_printf (_("Single stepping until exit from function %s," |
1007 | "\nwhich has no line number information.\n"), | |
1008 | name); | |
c906108c SS |
1009 | } |
1010 | } | |
1011 | else | |
1012 | { | |
1013 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1014 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1015 | if (!sm->skip_subroutines) |
c906108c SS |
1016 | /* It is stepi. |
1017 | Don't step over function calls, not even to functions lacking | |
1018 | line numbers. */ | |
16c381f0 | 1019 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1020 | } |
1021 | ||
243a9253 | 1022 | if (sm->skip_subroutines) |
16c381f0 | 1023 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1024 | |
243a9253 | 1025 | return 0; |
c906108c | 1026 | } |
243a9253 PA |
1027 | |
1028 | /* Done. */ | |
46e3ed7f | 1029 | sm->set_finished (); |
243a9253 | 1030 | return 1; |
c906108c | 1031 | } |
c2d11a7d | 1032 | |
c906108c SS |
1033 | \f |
1034 | /* Continue program at specified address. */ | |
1035 | ||
1036 | static void | |
0b39b52e | 1037 | jump_command (const char *arg, int from_tty) |
c906108c | 1038 | { |
5af949e3 | 1039 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1040 | CORE_ADDR addr; |
c906108c SS |
1041 | struct symbol *fn; |
1042 | struct symbol *sfn; | |
6c4486e6 | 1043 | int async_exec; |
c5aa993b | 1044 | |
c906108c | 1045 | ERROR_NO_INFERIOR; |
573cda03 | 1046 | ensure_not_tfind_mode (); |
d729566a | 1047 | ensure_valid_thread (); |
94cc34af | 1048 | ensure_not_running (); |
c906108c | 1049 | |
1777feb0 | 1050 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1051 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1052 | arg = stripped.get (); | |
43ff13b4 | 1053 | |
328d42d8 | 1054 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1055 | |
c906108c | 1056 | if (!arg) |
e2e0b3e5 | 1057 | error_no_arg (_("starting address")); |
c906108c | 1058 | |
6c5b2ebe PA |
1059 | std::vector<symtab_and_line> sals |
1060 | = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); | |
1061 | if (sals.size () != 1) | |
1062 | error (_("Unreasonable jump request")); | |
c906108c | 1063 | |
6c5b2ebe PA |
1064 | symtab_and_line &sal = sals[0]; |
1065 | ||
c906108c | 1066 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1067 | error (_("No source file has been specified.")); |
c906108c | 1068 | |
1777feb0 | 1069 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1070 | |
1777feb0 | 1071 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1072 | fn = get_frame_function (get_current_frame ()); |
1073 | sfn = find_pc_function (sal.pc); | |
1074 | if (fn != NULL && sfn != fn) | |
1075 | { | |
9e2f0ad4 | 1076 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
987012b8 | 1077 | fn->print_name ())) |
c906108c | 1078 | { |
8a3fe4f8 | 1079 | error (_("Not confirmed.")); |
c906108c SS |
1080 | /* NOTREACHED */ |
1081 | } | |
1082 | } | |
1083 | ||
c5aa993b | 1084 | if (sfn != NULL) |
c906108c | 1085 | { |
253342b8 DE |
1086 | struct obj_section *section; |
1087 | ||
c906108c | 1088 | fixup_symbol_section (sfn, 0); |
e19b2d94 | 1089 | section = sfn->obj_section (sfn->objfile ()); |
253342b8 DE |
1090 | if (section_is_overlay (section) |
1091 | && !section_is_mapped (section)) | |
c906108c | 1092 | { |
3e43a32a MS |
1093 | if (!query (_("WARNING!!! Destination is in " |
1094 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1095 | { |
8a3fe4f8 | 1096 | error (_("Not confirmed.")); |
c906108c SS |
1097 | /* NOTREACHED */ |
1098 | } | |
1099 | } | |
1100 | } | |
1101 | ||
c906108c SS |
1102 | addr = sal.pc; |
1103 | ||
1104 | if (from_tty) | |
1105 | { | |
6cb06a8c | 1106 | gdb_printf (_("Continuing at ")); |
0426ad51 | 1107 | gdb_puts (paddress (gdbarch, addr)); |
6cb06a8c | 1108 | gdb_printf (".\n"); |
c906108c SS |
1109 | } |
1110 | ||
70509625 | 1111 | clear_proceed_status (0); |
64ce06e4 | 1112 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1113 | } |
c906108c | 1114 | \f |
c906108c SS |
1115 | /* Continue program giving it specified signal. */ |
1116 | ||
1117 | static void | |
0b39b52e | 1118 | signal_command (const char *signum_exp, int from_tty) |
c906108c | 1119 | { |
2ea28649 | 1120 | enum gdb_signal oursig; |
6c4486e6 | 1121 | int async_exec; |
c906108c SS |
1122 | |
1123 | dont_repeat (); /* Too dangerous. */ | |
1124 | ERROR_NO_INFERIOR; | |
573cda03 | 1125 | ensure_not_tfind_mode (); |
d729566a | 1126 | ensure_valid_thread (); |
94cc34af | 1127 | ensure_not_running (); |
c906108c | 1128 | |
32c1e744 | 1129 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1130 | gdb::unique_xmalloc_ptr<char> stripped |
1131 | = strip_bg_char (signum_exp, &async_exec); | |
1132 | signum_exp = stripped.get (); | |
32c1e744 | 1133 | |
328d42d8 | 1134 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
32c1e744 | 1135 | |
c906108c | 1136 | if (!signum_exp) |
e2e0b3e5 | 1137 | error_no_arg (_("signal number")); |
c906108c SS |
1138 | |
1139 | /* It would be even slicker to make signal names be valid expressions, | |
1140 | (the type could be "enum $signal" or some such), then the user could | |
1141 | assign them to convenience variables. */ | |
2ea28649 | 1142 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1143 | |
a493e3e2 | 1144 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1145 | { |
1146 | /* No, try numeric. */ | |
bb518678 | 1147 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1148 | |
1149 | if (num == 0) | |
a493e3e2 | 1150 | oursig = GDB_SIGNAL_0; |
c906108c | 1151 | else |
2ea28649 | 1152 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1153 | } |
1154 | ||
70509625 PA |
1155 | /* Look for threads other than the current that this command ends up |
1156 | resuming too (due to schedlock off), and warn if they'll get a | |
1157 | signal delivered. "signal 0" is used to suppress a previous | |
1158 | signal, but if the current thread is no longer the one that got | |
1159 | the signal, then the user is potentially suppressing the signal | |
1160 | of the wrong thread. */ | |
1161 | if (!non_stop) | |
1162 | { | |
70509625 PA |
1163 | int must_confirm = 0; |
1164 | ||
1165 | /* This indicates what will be resumed. Either a single thread, | |
1166 | a whole process, or all threads of all processes. */ | |
08036331 | 1167 | ptid_t resume_ptid = user_visible_resume_ptid (0); |
5b6d1e4f PA |
1168 | process_stratum_target *resume_target |
1169 | = user_visible_resume_target (resume_ptid); | |
70509625 | 1170 | |
5b6d1e4f PA |
1171 | thread_info *current = inferior_thread (); |
1172 | ||
1173 | for (thread_info *tp : all_non_exited_threads (resume_target, resume_ptid)) | |
70509625 | 1174 | { |
5b6d1e4f | 1175 | if (tp == current) |
70509625 | 1176 | continue; |
70509625 | 1177 | |
1edb66d8 SM |
1178 | if (tp->stop_signal () != GDB_SIGNAL_0 |
1179 | && signal_pass_state (tp->stop_signal ())) | |
70509625 PA |
1180 | { |
1181 | if (!must_confirm) | |
6cb06a8c TT |
1182 | gdb_printf (_("Note:\n")); |
1183 | gdb_printf (_(" Thread %s previously stopped with signal %s, %s.\n"), | |
1184 | print_thread_id (tp), | |
1185 | gdb_signal_to_name (tp->stop_signal ()), | |
1186 | gdb_signal_to_string (tp->stop_signal ())); | |
70509625 PA |
1187 | must_confirm = 1; |
1188 | } | |
1189 | } | |
1190 | ||
1191 | if (must_confirm | |
43792cf0 | 1192 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1193 | "still deliver the signals noted above to their respective threads.\n" |
1194 | "Continue anyway? "), | |
43792cf0 | 1195 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1196 | error (_("Not confirmed.")); |
1197 | } | |
1198 | ||
c906108c SS |
1199 | if (from_tty) |
1200 | { | |
a493e3e2 | 1201 | if (oursig == GDB_SIGNAL_0) |
6cb06a8c | 1202 | gdb_printf (_("Continuing with no signal.\n")); |
c906108c | 1203 | else |
6cb06a8c TT |
1204 | gdb_printf (_("Continuing with signal %s.\n"), |
1205 | gdb_signal_to_name (oursig)); | |
c906108c SS |
1206 | } |
1207 | ||
70509625 | 1208 | clear_proceed_status (0); |
64ce06e4 | 1209 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1210 | } |
1211 | ||
81219e53 DE |
1212 | /* Queue a signal to be delivered to the current thread. */ |
1213 | ||
1214 | static void | |
0b39b52e | 1215 | queue_signal_command (const char *signum_exp, int from_tty) |
81219e53 DE |
1216 | { |
1217 | enum gdb_signal oursig; | |
1218 | struct thread_info *tp; | |
1219 | ||
1220 | ERROR_NO_INFERIOR; | |
1221 | ensure_not_tfind_mode (); | |
1222 | ensure_valid_thread (); | |
1223 | ensure_not_running (); | |
1224 | ||
1225 | if (signum_exp == NULL) | |
1226 | error_no_arg (_("signal number")); | |
1227 | ||
1228 | /* It would be even slicker to make signal names be valid expressions, | |
1229 | (the type could be "enum $signal" or some such), then the user could | |
1230 | assign them to convenience variables. */ | |
1231 | oursig = gdb_signal_from_name (signum_exp); | |
1232 | ||
1233 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1234 | { | |
1235 | /* No, try numeric. */ | |
1236 | int num = parse_and_eval_long (signum_exp); | |
1237 | ||
1238 | if (num == 0) | |
1239 | oursig = GDB_SIGNAL_0; | |
1240 | else | |
1241 | oursig = gdb_signal_from_command (num); | |
1242 | } | |
1243 | ||
1244 | if (oursig != GDB_SIGNAL_0 | |
1245 | && !signal_pass_state (oursig)) | |
1246 | error (_("Signal handling set to not pass this signal to the program.")); | |
1247 | ||
1248 | tp = inferior_thread (); | |
1edb66d8 | 1249 | tp->set_stop_signal (oursig); |
81219e53 DE |
1250 | } |
1251 | ||
cfc31633 PA |
1252 | /* Data for the FSM that manages the until (with no argument) |
1253 | command. */ | |
1254 | ||
46e3ed7f | 1255 | struct until_next_fsm : public thread_fsm |
fa4cd53f | 1256 | { |
cfc31633 | 1257 | /* The thread that as current when the command was executed. */ |
fa4cd53f | 1258 | int thread; |
cfc31633 | 1259 | |
46e3ed7f TT |
1260 | until_next_fsm (struct interp *cmd_interp, int thread) |
1261 | : thread_fsm (cmd_interp), | |
1262 | thread (thread) | |
1263 | { | |
1264 | } | |
cfc31633 | 1265 | |
46e3ed7f TT |
1266 | bool should_stop (struct thread_info *thread) override; |
1267 | void clean_up (struct thread_info *thread) override; | |
1268 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
1269 | }; |
1270 | ||
cfc31633 PA |
1271 | /* Implementation of the 'should_stop' FSM method for the until (with |
1272 | no arg) command. */ | |
1273 | ||
46e3ed7f TT |
1274 | bool |
1275 | until_next_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 1276 | { |
cfc31633 | 1277 | if (tp->control.stop_step) |
46e3ed7f | 1278 | set_finished (); |
cfc31633 | 1279 | |
46e3ed7f | 1280 | return true; |
cfc31633 PA |
1281 | } |
1282 | ||
1283 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1284 | arg) command. */ | |
186c406b | 1285 | |
46e3ed7f TT |
1286 | void |
1287 | until_next_fsm::clean_up (struct thread_info *thread) | |
186c406b | 1288 | { |
8980e177 | 1289 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1290 | } |
1291 | ||
1292 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1293 | (with no arg) command. */ | |
1294 | ||
46e3ed7f TT |
1295 | enum async_reply_reason |
1296 | until_next_fsm::do_async_reply_reason () | |
cfc31633 PA |
1297 | { |
1298 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1299 | } |
1300 | ||
c906108c SS |
1301 | /* Proceed until we reach a different source line with pc greater than |
1302 | our current one or exit the function. We skip calls in both cases. | |
1303 | ||
1304 | Note that eventually this command should probably be changed so | |
1305 | that only source lines are printed out when we hit the breakpoint | |
1306 | we set. This may involve changes to wait_for_inferior and the | |
1307 | proceed status code. */ | |
1308 | ||
c906108c | 1309 | static void |
fba45db2 | 1310 | until_next_command (int from_tty) |
c906108c SS |
1311 | { |
1312 | struct frame_info *frame; | |
1313 | CORE_ADDR pc; | |
1314 | struct symbol *func; | |
1315 | struct symtab_and_line sal; | |
4e1c45ea | 1316 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1317 | int thread = tp->global_num; |
cfc31633 | 1318 | struct until_next_fsm *sm; |
c5aa993b | 1319 | |
70509625 | 1320 | clear_proceed_status (0); |
29734269 | 1321 | set_step_frame (tp); |
c906108c SS |
1322 | |
1323 | frame = get_current_frame (); | |
1324 | ||
1325 | /* Step until either exited from this function or greater | |
1326 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1327 | not). */ |
c906108c | 1328 | |
1c7819ef | 1329 | pc = get_frame_pc (frame); |
c906108c | 1330 | func = find_pc_function (pc); |
c5aa993b | 1331 | |
c906108c SS |
1332 | if (!func) |
1333 | { | |
7cbd4a93 | 1334 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1335 | |
7cbd4a93 | 1336 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1337 | error (_("Execution is not within a known function.")); |
c5aa993b | 1338 | |
4aeddc50 | 1339 | tp->control.step_range_start = msymbol.value_address (); |
7e09a223 YQ |
1340 | /* The upper-bound of step_range is exclusive. In order to make PC |
1341 | within the range, set the step_range_end with PC + 1. */ | |
1342 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1343 | } |
1344 | else | |
1345 | { | |
1346 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1347 | |
4aeddc50 | 1348 | tp->control.step_range_start = BLOCK_ENTRY_PC (func->value_block ()); |
16c381f0 | 1349 | tp->control.step_range_end = sal.end; |
9ab50efc BL |
1350 | |
1351 | /* By setting the step_range_end based on the current pc, we are | |
1352 | assuming that the last line table entry for any given source line | |
1353 | will have is_stmt set to true. This is not necessarily the case, | |
1354 | there may be additional entries for the same source line with | |
1355 | is_stmt set false. Consider the following code: | |
1356 | ||
1357 | for (int i = 0; i < 10; i++) | |
1358 | loop_body (); | |
1359 | ||
1360 | Clang-13, will generate multiple line table entries at the end of | |
1361 | the loop all associated with the 'for' line. The first of these | |
1362 | entries is marked is_stmt true, but the other entries are is_stmt | |
1363 | false. | |
1364 | ||
1365 | If we only use the values in SAL, then our stepping range may not | |
1366 | extend to the end of the loop. The until command will reach the | |
1367 | end of the range, find a non is_stmt instruction, and step to the | |
1368 | next is_stmt instruction. This stopping point, however, will be | |
1369 | inside the loop, which is not what we wanted. | |
1370 | ||
1371 | Instead, we now check any subsequent line table entries to see if | |
1372 | they are for the same line. If they are, and they are marked | |
1373 | is_stmt false, then we extend the end of our stepping range. | |
1374 | ||
1375 | When we finish this process the end of the stepping range will | |
1376 | point either to a line with a different line number, or, will | |
1377 | point at an address for the same line number that is marked as a | |
1378 | statement. */ | |
1379 | ||
1380 | struct symtab_and_line final_sal | |
1381 | = find_pc_line (tp->control.step_range_end, 0); | |
1382 | ||
1383 | while (final_sal.line == sal.line && final_sal.symtab == sal.symtab | |
1384 | && !final_sal.is_stmt) | |
1385 | { | |
1386 | tp->control.step_range_end = final_sal.end; | |
1387 | final_sal = find_pc_line (final_sal.end, 0); | |
1388 | } | |
c906108c | 1389 | } |
c1e36e3e | 1390 | tp->control.may_range_step = 1; |
c5aa993b | 1391 | |
16c381f0 | 1392 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1393 | |
186c406b | 1394 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
5419bdae | 1395 | delete_longjmp_breakpoint_cleanup lj_deleter (thread); |
186c406b | 1396 | |
46e3ed7f | 1397 | sm = new until_next_fsm (command_interp (), tp->global_num); |
573269a8 | 1398 | tp->set_thread_fsm (std::unique_ptr<thread_fsm> (sm)); |
5419bdae | 1399 | lj_deleter.release (); |
fa4cd53f | 1400 | |
cfc31633 | 1401 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1402 | } |
1403 | ||
c5aa993b | 1404 | static void |
0b39b52e | 1405 | until_command (const char *arg, int from_tty) |
c906108c | 1406 | { |
6c4486e6 | 1407 | int async_exec; |
43ff13b4 | 1408 | |
4247603b | 1409 | ERROR_NO_INFERIOR; |
573cda03 | 1410 | ensure_not_tfind_mode (); |
4247603b PA |
1411 | ensure_valid_thread (); |
1412 | ensure_not_running (); | |
573cda03 | 1413 | |
1777feb0 | 1414 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1415 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1416 | arg = stripped.get (); | |
43ff13b4 | 1417 | |
328d42d8 | 1418 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1419 | |
c906108c | 1420 | if (arg) |
ae66c1fc | 1421 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1422 | else |
1423 | until_next_command (from_tty); | |
1424 | } | |
ae66c1fc EZ |
1425 | |
1426 | static void | |
0b39b52e | 1427 | advance_command (const char *arg, int from_tty) |
ae66c1fc | 1428 | { |
6c4486e6 | 1429 | int async_exec; |
ae66c1fc | 1430 | |
4247603b | 1431 | ERROR_NO_INFERIOR; |
573cda03 | 1432 | ensure_not_tfind_mode (); |
4247603b PA |
1433 | ensure_valid_thread (); |
1434 | ensure_not_running (); | |
573cda03 | 1435 | |
ae66c1fc | 1436 | if (arg == NULL) |
e2e0b3e5 | 1437 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1438 | |
1439 | /* Find out whether we must run in the background. */ | |
6be9a197 TT |
1440 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1441 | arg = stripped.get (); | |
ae66c1fc | 1442 | |
328d42d8 | 1443 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
ae66c1fc EZ |
1444 | |
1445 | until_break_command (arg, from_tty, 1); | |
1446 | } | |
c906108c | 1447 | \f |
e6b36367 | 1448 | /* See inferior.h. */ |
f941662f | 1449 | |
cc72b2a2 | 1450 | struct value * |
e6b36367 | 1451 | get_return_value (struct symbol *func_symbol, struct value *function) |
11cf8741 | 1452 | { |
215c69dc YQ |
1453 | regcache *stop_regs = get_current_regcache (); |
1454 | struct gdbarch *gdbarch = stop_regs->arch (); | |
44e5158b AC |
1455 | struct value *value; |
1456 | ||
e6b36367 LS |
1457 | struct type *value_type |
1458 | = check_typedef (TYPE_TARGET_TYPE (func_symbol->type ())); | |
78134374 | 1459 | gdb_assert (value_type->code () != TYPE_CODE_VOID); |
11cf8741 | 1460 | |
0b35f123 LS |
1461 | if (is_nocall_function (check_typedef (::value_type (function)))) |
1462 | { | |
1463 | warning (_("Function '%s' does not follow the target calling " | |
1464 | "convention, cannot determine its returned value."), | |
1465 | func_symbol->print_name ()); | |
1466 | ||
1467 | return nullptr; | |
1468 | } | |
1469 | ||
92ad9cd9 AC |
1470 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1471 | call, it's possible (with no help from the architecture vector) | |
1472 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1473 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1474 | inferior function call code. In fact, when inferior function |
1475 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1476 | |
6a3a010b | 1477 | switch (gdbarch_return_value (gdbarch, function, value_type, |
24b21115 | 1478 | NULL, NULL, NULL)) |
44e5158b | 1479 | { |
750eb019 AC |
1480 | case RETURN_VALUE_REGISTER_CONVENTION: |
1481 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1482 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1483 | value = allocate_value (value_type); |
215c69dc | 1484 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
50888e42 | 1485 | value_contents_raw (value).data (), NULL); |
750eb019 AC |
1486 | break; |
1487 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1488 | value = NULL; | |
1489 | break; | |
1490 | default: | |
e2e0b3e5 | 1491 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1492 | } |
bb472c1e | 1493 | |
cc72b2a2 KP |
1494 | return value; |
1495 | } | |
1496 | ||
243a9253 PA |
1497 | /* The captured function return value/type and its position in the |
1498 | value history. */ | |
cc72b2a2 | 1499 | |
243a9253 | 1500 | struct return_value_info |
cc72b2a2 | 1501 | { |
243a9253 PA |
1502 | /* The captured return value. May be NULL if we weren't able to |
1503 | retrieve it. See get_return_value. */ | |
1504 | struct value *value; | |
1505 | ||
1506 | /* The return type. In some cases, we'll not be able extract the | |
1507 | return value, but we always know the type. */ | |
1508 | struct type *type; | |
1509 | ||
1510 | /* If we captured a value, this is the value history index. */ | |
1511 | int value_history_index; | |
1512 | }; | |
1513 | ||
1514 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1515 | |
243a9253 PA |
1516 | static void |
1517 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1518 | { | |
1519 | if (rv->value != NULL) | |
31db7b6c | 1520 | { |
79a45b7d TT |
1521 | struct value_print_options opts; |
1522 | ||
31db7b6c | 1523 | /* Print it. */ |
112e8700 SM |
1524 | uiout->text ("Value returned is "); |
1525 | uiout->field_fmt ("gdb-result-var", "$%d", | |
d7e74731 | 1526 | rv->value_history_index); |
112e8700 | 1527 | uiout->text (" = "); |
5d9a0608 | 1528 | get_user_print_options (&opts); |
d7e74731 | 1529 | |
000439d5 TT |
1530 | if (opts.finish_print) |
1531 | { | |
1532 | string_file stb; | |
1533 | value_print (rv->value, &stb, &opts); | |
1534 | uiout->field_stream ("return-value", stb); | |
1535 | } | |
1536 | else | |
7f6aba03 TT |
1537 | uiout->field_string ("return-value", _("<not displayed>"), |
1538 | metadata_style.style ()); | |
112e8700 | 1539 | uiout->text ("\n"); |
31db7b6c MK |
1540 | } |
1541 | else | |
1542 | { | |
2f408ecb | 1543 | std::string type_name = type_to_string (rv->type); |
112e8700 | 1544 | uiout->text ("Value returned has type: "); |
8dd8c8d4 | 1545 | uiout->field_string ("return-type", type_name); |
112e8700 SM |
1546 | uiout->text ("."); |
1547 | uiout->text (" Cannot determine contents\n"); | |
31db7b6c | 1548 | } |
11cf8741 JM |
1549 | } |
1550 | ||
243a9253 PA |
1551 | /* Print the result of a function at the end of a 'finish' command. |
1552 | RV points at an object representing the captured return value/type | |
1553 | and its position in the value history. */ | |
1554 | ||
1555 | void | |
1556 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1557 | { | |
f097f5ad | 1558 | if (rv->type == NULL |
78134374 | 1559 | || check_typedef (rv->type)->code () == TYPE_CODE_VOID) |
243a9253 PA |
1560 | return; |
1561 | ||
a70b8144 | 1562 | try |
243a9253 PA |
1563 | { |
1564 | /* print_return_value_1 can throw an exception in some | |
1565 | circumstances. We need to catch this so that we still | |
1566 | delete the breakpoint. */ | |
1567 | print_return_value_1 (uiout, rv); | |
1568 | } | |
230d2906 | 1569 | catch (const gdb_exception &ex) |
243a9253 PA |
1570 | { |
1571 | exception_print (gdb_stdout, ex); | |
1572 | } | |
243a9253 PA |
1573 | } |
1574 | ||
1575 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1576 | |
46e3ed7f | 1577 | struct finish_command_fsm : public thread_fsm |
43ff13b4 | 1578 | { |
243a9253 PA |
1579 | /* The momentary breakpoint set at the function's return address in |
1580 | the caller. */ | |
46e3ed7f | 1581 | breakpoint_up breakpoint; |
243a9253 PA |
1582 | |
1583 | /* The function that we're stepping out of. */ | |
46e3ed7f | 1584 | struct symbol *function = nullptr; |
8a6c4031 | 1585 | |
243a9253 PA |
1586 | /* If the FSM finishes successfully, this stores the function's |
1587 | return value. */ | |
46e3ed7f | 1588 | struct return_value_info return_value_info {}; |
c5aa993b | 1589 | |
46e3ed7f TT |
1590 | explicit finish_command_fsm (struct interp *cmd_interp) |
1591 | : thread_fsm (cmd_interp) | |
1592 | { | |
1593 | } | |
243a9253 | 1594 | |
46e3ed7f TT |
1595 | bool should_stop (struct thread_info *thread) override; |
1596 | void clean_up (struct thread_info *thread) override; | |
1597 | struct return_value_info *return_value () override; | |
1598 | enum async_reply_reason do_async_reply_reason () override; | |
1599 | }; | |
347bddb7 | 1600 | |
243a9253 PA |
1601 | /* Implementation of the 'should_stop' FSM method for the finish |
1602 | commands. Detects whether the thread stepped out of the function | |
1603 | successfully, and if so, captures the function's return value and | |
1604 | marks the FSM finished. */ | |
1605 | ||
46e3ed7f TT |
1606 | bool |
1607 | finish_command_fsm::should_stop (struct thread_info *tp) | |
243a9253 | 1608 | { |
46e3ed7f | 1609 | struct return_value_info *rv = &return_value_info; |
243a9253 | 1610 | |
46e3ed7f | 1611 | if (function != NULL |
243a9253 | 1612 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f | 1613 | breakpoint.get ()) != NULL) |
43ff13b4 | 1614 | { |
243a9253 | 1615 | /* We're done. */ |
46e3ed7f | 1616 | set_finished (); |
bfec99b2 | 1617 | |
5f9c5a63 | 1618 | rv->type = TYPE_TARGET_TYPE (function->type ()); |
243a9253 PA |
1619 | if (rv->type == NULL) |
1620 | internal_error (__FILE__, __LINE__, | |
1621 | _("finish_command: function has no target type")); | |
f5871ec0 | 1622 | |
78134374 | 1623 | if (check_typedef (rv->type)->code () != TYPE_CODE_VOID) |
40c549d6 | 1624 | { |
243a9253 PA |
1625 | struct value *func; |
1626 | ||
46e3ed7f | 1627 | func = read_var_value (function, NULL, get_current_frame ()); |
e6b36367 | 1628 | rv->value = get_return_value (function, func); |
aca20ec4 KB |
1629 | if (rv->value != NULL) |
1630 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1631 | } |
1632 | } | |
1633 | else if (tp->control.stop_step) | |
1634 | { | |
1635 | /* Finishing from an inline frame, or reverse finishing. In | |
1636 | either case, there's no way to retrieve the return value. */ | |
46e3ed7f | 1637 | set_finished (); |
243a9253 | 1638 | } |
fa4cd53f | 1639 | |
46e3ed7f | 1640 | return true; |
243a9253 | 1641 | } |
40c549d6 | 1642 | |
243a9253 PA |
1643 | /* Implementation of the 'clean_up' FSM method for the finish |
1644 | commands. */ | |
fa4cd53f | 1645 | |
46e3ed7f TT |
1646 | void |
1647 | finish_command_fsm::clean_up (struct thread_info *thread) | |
243a9253 | 1648 | { |
46e3ed7f | 1649 | breakpoint.reset (); |
8980e177 | 1650 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1651 | } |
f941662f | 1652 | |
243a9253 PA |
1653 | /* Implementation of the 'return_value' FSM method for the finish |
1654 | commands. */ | |
1655 | ||
46e3ed7f TT |
1656 | struct return_value_info * |
1657 | finish_command_fsm::return_value () | |
243a9253 | 1658 | { |
46e3ed7f | 1659 | return &return_value_info; |
43ff13b4 JM |
1660 | } |
1661 | ||
243a9253 PA |
1662 | /* Implementation of the 'async_reply_reason' FSM method for the |
1663 | finish commands. */ | |
1664 | ||
46e3ed7f TT |
1665 | enum async_reply_reason |
1666 | finish_command_fsm::do_async_reply_reason () | |
604ead4a | 1667 | { |
243a9253 PA |
1668 | if (execution_direction == EXEC_REVERSE) |
1669 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1670 | else | |
1671 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1672 | } |
1673 | ||
b2175913 MS |
1674 | /* finish_backward -- helper function for finish_command. */ |
1675 | ||
1676 | static void | |
243a9253 | 1677 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1678 | { |
1679 | struct symtab_and_line sal; | |
1680 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1681 | CORE_ADDR pc; |
b2175913 | 1682 | CORE_ADDR func_addr; |
b2175913 | 1683 | |
1c7819ef PA |
1684 | pc = get_frame_pc (get_current_frame ()); |
1685 | ||
1686 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1687 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1688 | |
1689 | sal = find_pc_line (func_addr, 0); | |
1690 | ||
9da8c2a0 | 1691 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1692 | /* Special case: if we're sitting at the function entry point, |
1693 | then all we need to do is take a reverse singlestep. We | |
1694 | don't need to set a breakpoint, and indeed it would do us | |
1695 | no good to do so. | |
1696 | ||
1697 | Note that this can only happen at frame #0, since there's | |
1698 | no way that a function up the stack can have a return address | |
1699 | that's equal to its entry point. */ | |
1700 | ||
1c7819ef | 1701 | if (sal.pc != pc) |
b2175913 | 1702 | { |
a6d9a66e UW |
1703 | struct frame_info *frame = get_selected_frame (NULL); |
1704 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1705 | |
1706 | /* Set a step-resume at the function's entry point. Once that's | |
1707 | hit, we'll do one more step backwards. */ | |
51abb421 | 1708 | symtab_and_line sr_sal; |
9da8c2a0 PA |
1709 | sr_sal.pc = sal.pc; |
1710 | sr_sal.pspace = get_frame_program_space (frame); | |
1711 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1712 | sr_sal, null_frame_id); | |
a6d9a66e | 1713 | |
64ce06e4 | 1714 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1715 | } |
1716 | else | |
b2175913 | 1717 | { |
9da8c2a0 PA |
1718 | /* We're almost there -- we just need to back up by one more |
1719 | single-step. */ | |
16c381f0 | 1720 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1721 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1722 | } |
b2175913 MS |
1723 | } |
1724 | ||
243a9253 PA |
1725 | /* finish_forward -- helper function for finish_command. FRAME is the |
1726 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1727 | |
1728 | static void | |
243a9253 | 1729 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1730 | { |
def166f6 | 1731 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1732 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1733 | struct symtab_and_line sal; |
1734 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1735 | |
1736 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1737 | sal.pc = get_frame_pc (frame); | |
1738 | ||
243a9253 PA |
1739 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1740 | get_stack_frame_id (frame), | |
46e3ed7f | 1741 | bp_finish); |
b2175913 | 1742 | |
c70a6932 JK |
1743 | /* set_momentary_breakpoint invalidates FRAME. */ |
1744 | frame = NULL; | |
1745 | ||
def166f6 | 1746 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1747 | |
46c03469 | 1748 | /* We want to print return value, please... */ |
16c381f0 | 1749 | tp->control.proceed_to_finish = 1; |
b2175913 | 1750 | |
243a9253 | 1751 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1752 | } |
1753 | ||
e3b5daf9 MM |
1754 | /* Skip frames for "finish". */ |
1755 | ||
1756 | static struct frame_info * | |
1757 | skip_finish_frames (struct frame_info *frame) | |
1758 | { | |
1759 | struct frame_info *start; | |
1760 | ||
1761 | do | |
1762 | { | |
1763 | start = frame; | |
1764 | ||
1765 | frame = skip_tailcall_frames (frame); | |
1766 | if (frame == NULL) | |
1767 | break; | |
1768 | ||
1769 | frame = skip_unwritable_frames (frame); | |
1770 | if (frame == NULL) | |
1771 | break; | |
1772 | } | |
1773 | while (start != frame); | |
1774 | ||
1775 | return frame; | |
1776 | } | |
1777 | ||
f941662f MK |
1778 | /* "finish": Set a temporary breakpoint at the place the selected |
1779 | frame will return to, then continue. */ | |
c906108c SS |
1780 | |
1781 | static void | |
0b39b52e | 1782 | finish_command (const char *arg, int from_tty) |
c906108c | 1783 | { |
52f0bd74 | 1784 | struct frame_info *frame; |
6c4486e6 | 1785 | int async_exec; |
243a9253 PA |
1786 | struct finish_command_fsm *sm; |
1787 | struct thread_info *tp; | |
43ff13b4 | 1788 | |
4247603b | 1789 | ERROR_NO_INFERIOR; |
573cda03 | 1790 | ensure_not_tfind_mode (); |
4247603b PA |
1791 | ensure_valid_thread (); |
1792 | ensure_not_running (); | |
573cda03 | 1793 | |
f941662f | 1794 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1795 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1796 | arg = stripped.get (); | |
43ff13b4 | 1797 | |
328d42d8 | 1798 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
c906108c SS |
1799 | |
1800 | if (arg) | |
8a3fe4f8 | 1801 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1802 | |
206415a3 | 1803 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1804 | if (frame == 0) |
8a3fe4f8 | 1805 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1806 | |
70509625 | 1807 | clear_proceed_status (0); |
c906108c | 1808 | |
243a9253 PA |
1809 | tp = inferior_thread (); |
1810 | ||
46e3ed7f | 1811 | sm = new finish_command_fsm (command_interp ()); |
243a9253 | 1812 | |
573269a8 | 1813 | tp->set_thread_fsm (std::unique_ptr<thread_fsm> (sm)); |
243a9253 | 1814 | |
edb3359d | 1815 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 1816 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
1817 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
1818 | == INLINE_FRAME) | |
1819 | { | |
1820 | /* Claim we are stepping in the calling frame. An empty step | |
1821 | range means that we will stop once we aren't in a function | |
1822 | called by that frame. We don't use the magic "1" value for | |
1823 | step_range_end, because then infrun will think this is nexti, | |
1824 | and not step over the rest of this inlined function call. */ | |
29734269 | 1825 | set_step_info (tp, frame, {}); |
16c381f0 JK |
1826 | tp->control.step_range_start = get_frame_pc (frame); |
1827 | tp->control.step_range_end = tp->control.step_range_start; | |
1828 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
1829 | |
1830 | /* Print info on the selected frame, including level number but not | |
1831 | source. */ | |
1832 | if (from_tty) | |
1833 | { | |
6cb06a8c | 1834 | gdb_printf (_("Run till exit from ")); |
08d72866 | 1835 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
1836 | } |
1837 | ||
64ce06e4 | 1838 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
1839 | return; |
1840 | } | |
1841 | ||
c906108c SS |
1842 | /* Find the function we will return from. */ |
1843 | ||
243a9253 | 1844 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 1845 | |
f941662f MK |
1846 | /* Print info on the selected frame, including level number but not |
1847 | source. */ | |
c906108c SS |
1848 | if (from_tty) |
1849 | { | |
b2175913 | 1850 | if (execution_direction == EXEC_REVERSE) |
6cb06a8c | 1851 | gdb_printf (_("Run back to call of ")); |
b2175913 | 1852 | else |
743649fd | 1853 | { |
5f9c5a63 | 1854 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type ()) |
743649fd MW |
1855 | && !query (_("warning: Function %s does not return normally.\n" |
1856 | "Try to finish anyway? "), | |
987012b8 | 1857 | sm->function->print_name ())) |
743649fd | 1858 | error (_("Not confirmed.")); |
6cb06a8c | 1859 | gdb_printf (_("Run till exit from ")); |
743649fd | 1860 | } |
b2175913 | 1861 | |
08d72866 | 1862 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
1863 | } |
1864 | ||
b2175913 | 1865 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 1866 | finish_backward (sm); |
b2175913 | 1867 | else |
33b4777c | 1868 | { |
e3b5daf9 | 1869 | frame = skip_finish_frames (frame); |
7eb89530 | 1870 | |
33b4777c MM |
1871 | if (frame == NULL) |
1872 | error (_("Cannot find the caller frame.")); | |
1873 | ||
1874 | finish_forward (sm, frame); | |
1875 | } | |
c906108c SS |
1876 | } |
1877 | \f | |
f941662f | 1878 | |
c906108c | 1879 | static void |
1d12d88f | 1880 | info_program_command (const char *args, int from_tty) |
c906108c | 1881 | { |
313f3b21 | 1882 | bpstat *bs; |
347bddb7 | 1883 | int num, stat; |
347bddb7 | 1884 | ptid_t ptid; |
5b6d1e4f | 1885 | process_stratum_target *proc_target; |
c5aa993b | 1886 | |
55f6301a | 1887 | if (!target_has_execution ()) |
c906108c | 1888 | { |
6cb06a8c | 1889 | gdb_printf (_("The program being debugged is not being run.\n")); |
c906108c SS |
1890 | return; |
1891 | } | |
1892 | ||
347bddb7 | 1893 | if (non_stop) |
5b6d1e4f PA |
1894 | { |
1895 | ptid = inferior_ptid; | |
1896 | proc_target = current_inferior ()->process_target (); | |
1897 | } | |
347bddb7 | 1898 | else |
5b6d1e4f | 1899 | get_last_target_status (&proc_target, &ptid, nullptr); |
347bddb7 | 1900 | |
9e7f3bbb | 1901 | if (ptid == null_ptid || ptid == minus_one_ptid) |
00431a78 PA |
1902 | error (_("No selected thread.")); |
1903 | ||
5b6d1e4f | 1904 | thread_info *tp = find_thread_ptid (proc_target, ptid); |
00431a78 PA |
1905 | |
1906 | if (tp->state == THREAD_EXITED) | |
347bddb7 | 1907 | error (_("Invalid selected thread.")); |
00431a78 | 1908 | else if (tp->state == THREAD_RUNNING) |
347bddb7 PA |
1909 | error (_("Selected thread is running.")); |
1910 | ||
16c381f0 | 1911 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
1912 | stat = bpstat_num (&bs, &num); |
1913 | ||
c906108c | 1914 | target_files_info (); |
6cb06a8c TT |
1915 | gdb_printf (_("Program stopped at %s.\n"), |
1916 | paddress (target_gdbarch (), tp->stop_pc ())); | |
16c381f0 | 1917 | if (tp->control.stop_step) |
6cb06a8c | 1918 | gdb_printf (_("It stopped after being stepped.\n")); |
8671a17b | 1919 | else if (stat != 0) |
c906108c SS |
1920 | { |
1921 | /* There may be several breakpoints in the same place, so this | |
dda83cd7 | 1922 | isn't as strange as it seems. */ |
8671a17b | 1923 | while (stat != 0) |
c906108c | 1924 | { |
8671a17b | 1925 | if (stat < 0) |
c906108c | 1926 | { |
6cb06a8c TT |
1927 | gdb_printf (_("It stopped at a breakpoint " |
1928 | "that has since been deleted.\n")); | |
c906108c SS |
1929 | } |
1930 | else | |
6cb06a8c | 1931 | gdb_printf (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 1932 | stat = bpstat_num (&bs, &num); |
c906108c SS |
1933 | } |
1934 | } | |
1edb66d8 | 1935 | else if (tp->stop_signal () != GDB_SIGNAL_0) |
c906108c | 1936 | { |
6cb06a8c TT |
1937 | gdb_printf (_("It stopped with signal %s, %s.\n"), |
1938 | gdb_signal_to_name (tp->stop_signal ()), | |
1939 | gdb_signal_to_string (tp->stop_signal ())); | |
c906108c SS |
1940 | } |
1941 | ||
0d41ba00 | 1942 | if (from_tty) |
c906108c | 1943 | { |
6cb06a8c TT |
1944 | gdb_printf (_("Type \"info stack\" or \"info " |
1945 | "registers\" for more information.\n")); | |
c906108c SS |
1946 | } |
1947 | } | |
1948 | \f | |
1949 | static void | |
69f476a3 | 1950 | environment_info (const char *var, int from_tty) |
c906108c SS |
1951 | { |
1952 | if (var) | |
1953 | { | |
9a6c7d9c | 1954 | const char *val = current_inferior ()->environment.get (var); |
abbb1732 | 1955 | |
c906108c SS |
1956 | if (val) |
1957 | { | |
0426ad51 TT |
1958 | gdb_puts (var); |
1959 | gdb_puts (" = "); | |
1960 | gdb_puts (val); | |
1961 | gdb_puts ("\n"); | |
c906108c SS |
1962 | } |
1963 | else | |
1964 | { | |
0426ad51 TT |
1965 | gdb_puts ("Environment variable \""); |
1966 | gdb_puts (var); | |
1967 | gdb_puts ("\" not defined.\n"); | |
c906108c SS |
1968 | } |
1969 | } | |
1970 | else | |
1971 | { | |
9a6c7d9c | 1972 | char **envp = current_inferior ()->environment.envp (); |
abbb1732 | 1973 | |
9a6c7d9c | 1974 | for (int idx = 0; envp[idx] != NULL; ++idx) |
c906108c | 1975 | { |
0426ad51 TT |
1976 | gdb_puts (envp[idx]); |
1977 | gdb_puts ("\n"); | |
c906108c SS |
1978 | } |
1979 | } | |
1980 | } | |
1981 | ||
1982 | static void | |
69f476a3 | 1983 | set_environment_command (const char *arg, int from_tty) |
c906108c | 1984 | { |
69f476a3 | 1985 | const char *p, *val; |
c906108c SS |
1986 | int nullset = 0; |
1987 | ||
1988 | if (arg == 0) | |
e2e0b3e5 | 1989 | error_no_arg (_("environment variable and value")); |
c906108c | 1990 | |
85102364 | 1991 | /* Find separation between variable name and value. */ |
c906108c SS |
1992 | p = (char *) strchr (arg, '='); |
1993 | val = (char *) strchr (arg, ' '); | |
1994 | ||
1995 | if (p != 0 && val != 0) | |
1996 | { | |
1997 | /* We have both a space and an equals. If the space is before the | |
dda83cd7 SM |
1998 | equals, walk forward over the spaces til we see a nonspace |
1999 | (possibly the equals). */ | |
c906108c SS |
2000 | if (p > val) |
2001 | while (*val == ' ') | |
2002 | val++; | |
2003 | ||
2004 | /* Now if the = is after the char following the spaces, | |
dda83cd7 | 2005 | take the char following the spaces. */ |
c906108c SS |
2006 | if (p > val) |
2007 | p = val - 1; | |
2008 | } | |
2009 | else if (val != 0 && p == 0) | |
2010 | p = val; | |
2011 | ||
2012 | if (p == arg) | |
e2e0b3e5 | 2013 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2014 | |
2015 | if (p == 0 || p[1] == 0) | |
2016 | { | |
2017 | nullset = 1; | |
2018 | if (p == 0) | |
1777feb0 | 2019 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2020 | } |
2021 | else | |
2022 | { | |
1777feb0 | 2023 | /* Not setting variable value to null. */ |
c906108c SS |
2024 | val = p + 1; |
2025 | while (*val == ' ' || *val == '\t') | |
2026 | val++; | |
2027 | } | |
2028 | ||
c5aa993b JM |
2029 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2030 | p--; | |
c906108c | 2031 | |
69f476a3 | 2032 | std::string var (arg, p - arg); |
c906108c SS |
2033 | if (nullset) |
2034 | { | |
6cb06a8c TT |
2035 | gdb_printf (_("Setting environment variable " |
2036 | "\"%s\" to null value.\n"), | |
2037 | var.c_str ()); | |
69f476a3 | 2038 | current_inferior ()->environment.set (var.c_str (), ""); |
c906108c SS |
2039 | } |
2040 | else | |
69f476a3 | 2041 | current_inferior ()->environment.set (var.c_str (), val); |
c906108c SS |
2042 | } |
2043 | ||
2044 | static void | |
69f476a3 | 2045 | unset_environment_command (const char *var, int from_tty) |
c906108c SS |
2046 | { |
2047 | if (var == 0) | |
2048 | { | |
2049 | /* If there is no argument, delete all environment variables. | |
dda83cd7 | 2050 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2051 | if (!from_tty || query (_("Delete all environment variables? "))) |
206726fb | 2052 | current_inferior ()->environment.clear (); |
c906108c SS |
2053 | } |
2054 | else | |
9a6c7d9c | 2055 | current_inferior ()->environment.unset (var); |
c906108c SS |
2056 | } |
2057 | ||
1777feb0 | 2058 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2059 | |
2060 | static const char path_var_name[] = "PATH"; | |
2061 | ||
c906108c | 2062 | static void |
69f476a3 | 2063 | path_info (const char *args, int from_tty) |
c906108c | 2064 | { |
0426ad51 TT |
2065 | gdb_puts ("Executable and object file path: "); |
2066 | gdb_puts (current_inferior ()->environment.get (path_var_name)); | |
2067 | gdb_puts ("\n"); | |
c906108c SS |
2068 | } |
2069 | ||
2070 | /* Add zero or more directories to the front of the execution path. */ | |
2071 | ||
2072 | static void | |
0b39b52e | 2073 | path_command (const char *dirname, int from_tty) |
c906108c | 2074 | { |
a121b7c1 | 2075 | const char *env; |
abbb1732 | 2076 | |
c906108c | 2077 | dont_repeat (); |
9a6c7d9c | 2078 | env = current_inferior ()->environment.get (path_var_name); |
1777feb0 | 2079 | /* Can be null if path is not set. */ |
c906108c SS |
2080 | if (!env) |
2081 | env = ""; | |
e0700ba4 SM |
2082 | std::string exec_path = env; |
2083 | mod_path (dirname, exec_path); | |
2084 | current_inferior ()->environment.set (path_var_name, exec_path.c_str ()); | |
c906108c | 2085 | if (from_tty) |
cafb3438 | 2086 | path_info (NULL, from_tty); |
c906108c | 2087 | } |
c906108c | 2088 | \f |
c5aa993b | 2089 | |
e813d34a RK |
2090 | static void |
2091 | pad_to_column (string_file &stream, int col) | |
2092 | { | |
2093 | /* At least one space must be printed to separate columns. */ | |
2094 | stream.putc (' '); | |
2095 | const int size = stream.size (); | |
2096 | if (size < col) | |
2097 | stream.puts (n_spaces (col - size)); | |
2098 | } | |
2099 | ||
1292279a PA |
2100 | /* Print out the register NAME with value VAL, to FILE, in the default |
2101 | fashion. */ | |
2102 | ||
2103 | static void | |
2104 | default_print_one_register_info (struct ui_file *file, | |
2105 | const char *name, | |
2106 | struct value *val) | |
2107 | { | |
2108 | struct type *regtype = value_type (val); | |
f69d9aef | 2109 | int print_raw_format; |
e813d34a RK |
2110 | string_file format_stream; |
2111 | enum tab_stops | |
2112 | { | |
2113 | value_column_1 = 15, | |
2114 | /* Give enough room for "0x", 16 hex digits and two spaces in | |
dda83cd7 | 2115 | preceding column. */ |
e813d34a RK |
2116 | value_column_2 = value_column_1 + 2 + 16 + 2, |
2117 | }; | |
1292279a | 2118 | |
e813d34a RK |
2119 | format_stream.puts (name); |
2120 | pad_to_column (format_stream, value_column_1); | |
1292279a | 2121 | |
f69d9aef AB |
2122 | print_raw_format = (value_entirely_available (val) |
2123 | && !value_optimized_out (val)); | |
1292279a PA |
2124 | |
2125 | /* If virtual format is floating, print it that way, and in raw | |
2126 | hex. */ | |
78134374 SM |
2127 | if (regtype->code () == TYPE_CODE_FLT |
2128 | || regtype->code () == TYPE_CODE_DECFLOAT) | |
1292279a | 2129 | { |
1292279a | 2130 | struct value_print_options opts; |
50888e42 | 2131 | const gdb_byte *valaddr = value_contents_for_printing (val).data (); |
34877895 | 2132 | enum bfd_endian byte_order = type_byte_order (regtype); |
1292279a PA |
2133 | |
2134 | get_user_print_options (&opts); | |
2135 | opts.deref_ref = 1; | |
2136 | ||
3444c526 | 2137 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a | 2138 | |
f69d9aef AB |
2139 | if (print_raw_format) |
2140 | { | |
e813d34a RK |
2141 | pad_to_column (format_stream, value_column_2); |
2142 | format_stream.puts ("(raw "); | |
2143 | print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype), | |
2144 | byte_order, true); | |
2145 | format_stream.putc (')'); | |
f69d9aef | 2146 | } |
1292279a PA |
2147 | } |
2148 | else | |
2149 | { | |
2150 | struct value_print_options opts; | |
2151 | ||
2152 | /* Print the register in hex. */ | |
2153 | get_formatted_print_options (&opts, 'x'); | |
2154 | opts.deref_ref = 1; | |
3444c526 | 2155 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2156 | /* If not a vector register, print it also according to its |
2157 | natural format. */ | |
bd63c870 | 2158 | if (print_raw_format && regtype->is_vector () == 0) |
1292279a | 2159 | { |
e813d34a | 2160 | pad_to_column (format_stream, value_column_2); |
1292279a PA |
2161 | get_user_print_options (&opts); |
2162 | opts.deref_ref = 1; | |
3444c526 | 2163 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2164 | } |
2165 | } | |
2166 | ||
0426ad51 | 2167 | gdb_puts (format_stream.c_str (), file); |
6cb06a8c | 2168 | gdb_printf (file, "\n"); |
1292279a PA |
2169 | } |
2170 | ||
1777feb0 | 2171 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2172 | registers (print_all == 1) or all non-float and non-vector |
2173 | registers (print_all == 0). | |
c906108c SS |
2174 | |
2175 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2176 | register(s) one per line is good enough. If a different format is |
2177 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2178 | regs), or there is an existing convention for showing all the | |
2179 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2180 | provide that format. */ | |
c906108c | 2181 | |
666e11c5 | 2182 | void |
0ab7a791 AC |
2183 | default_print_registers_info (struct gdbarch *gdbarch, |
2184 | struct ui_file *file, | |
2185 | struct frame_info *frame, | |
2186 | int regnum, int print_all) | |
c906108c | 2187 | { |
0ab7a791 | 2188 | int i; |
f6efe3f8 | 2189 | const int numregs = gdbarch_num_cooked_regs (gdbarch); |
0ab7a791 | 2190 | |
c906108c SS |
2191 | for (i = 0; i < numregs; i++) |
2192 | { | |
4782dc19 | 2193 | /* Decide between printing all regs, non-float / vector regs, or |
dda83cd7 | 2194 | specific reg. */ |
c5aa993b JM |
2195 | if (regnum == -1) |
2196 | { | |
f9418c0f | 2197 | if (print_all) |
4782dc19 | 2198 | { |
f9418c0f | 2199 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2200 | continue; |
f9418c0f AC |
2201 | } |
2202 | else | |
2203 | { | |
2204 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2205 | continue; |
2206 | } | |
c5aa993b JM |
2207 | } |
2208 | else | |
2209 | { | |
2210 | if (i != regnum) | |
2211 | continue; | |
2212 | } | |
c906108c SS |
2213 | |
2214 | /* If the register name is empty, it is undefined for this | |
dda83cd7 | 2215 | processor, so don't display anything. */ |
a4bd449d UW |
2216 | if (gdbarch_register_name (gdbarch, i) == NULL |
2217 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2218 | continue; |
2219 | ||
1292279a PA |
2220 | default_print_one_register_info (file, |
2221 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2222 | value_of_register (i, frame)); |
c906108c SS |
2223 | } |
2224 | } | |
c906108c | 2225 | |
c906108c | 2226 | void |
1d12d88f | 2227 | registers_info (const char *addr_exp, int fpregs) |
c906108c | 2228 | { |
206415a3 | 2229 | struct frame_info *frame; |
a4bd449d | 2230 | struct gdbarch *gdbarch; |
c906108c | 2231 | |
9dccd06e | 2232 | if (!target_has_registers ()) |
8a3fe4f8 | 2233 | error (_("The program has no registers now.")); |
206415a3 | 2234 | frame = get_selected_frame (NULL); |
a4bd449d | 2235 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2236 | |
2237 | if (!addr_exp) | |
2238 | { | |
a4bd449d | 2239 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2240 | frame, -1, fpregs); |
c906108c SS |
2241 | return; |
2242 | } | |
2243 | ||
f9418c0f | 2244 | while (*addr_exp != '\0') |
c5aa993b | 2245 | { |
1d12d88f | 2246 | const char *start; |
f9418c0f | 2247 | const char *end; |
c906108c | 2248 | |
529480d0 KS |
2249 | /* Skip leading white space. */ |
2250 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2251 | |
f9418c0f | 2252 | /* Discard any leading ``$''. Check that there is something |
dda83cd7 | 2253 | resembling a register following it. */ |
f9418c0f AC |
2254 | if (addr_exp[0] == '$') |
2255 | addr_exp++; | |
2256 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2257 | error (_("Missing register name")); |
c906108c | 2258 | |
f9418c0f AC |
2259 | /* Find the start/end of this register name/num/group. */ |
2260 | start = addr_exp; | |
2261 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2262 | addr_exp++; | |
2263 | end = addr_exp; | |
ad842144 | 2264 | |
f9418c0f AC |
2265 | /* Figure out what we've found and display it. */ |
2266 | ||
2267 | /* A register name? */ | |
2268 | { | |
029a67e4 | 2269 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2270 | |
f9418c0f AC |
2271 | if (regnum >= 0) |
2272 | { | |
ad842144 MR |
2273 | /* User registers lie completely outside of the range of |
2274 | normal registers. Catch them early so that the target | |
2275 | never sees them. */ | |
f6efe3f8 | 2276 | if (regnum >= gdbarch_num_cooked_regs (gdbarch)) |
ad842144 | 2277 | { |
1292279a PA |
2278 | struct value *regval = value_of_user_reg (regnum, frame); |
2279 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2280 | regnum); | |
2281 | ||
2282 | /* Print in the same fashion | |
2283 | gdbarch_print_registers_info's default | |
2284 | implementation prints. */ | |
2285 | default_print_one_register_info (gdb_stdout, | |
2286 | regname, | |
2287 | regval); | |
ad842144 MR |
2288 | } |
2289 | else | |
2290 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2291 | frame, regnum, fpregs); | |
f9418c0f AC |
2292 | continue; |
2293 | } | |
2294 | } | |
ad842144 | 2295 | |
f9418c0f AC |
2296 | /* A register group? */ |
2297 | { | |
1bca9b1e AB |
2298 | const struct reggroup *group = nullptr; |
2299 | for (const struct reggroup *g : gdbarch_reggroups (gdbarch)) | |
f9418c0f AC |
2300 | { |
2301 | /* Don't bother with a length check. Should the user | |
2302 | enter a short register group name, go with the first | |
2303 | group that matches. */ | |
af7ce09b | 2304 | if (strncmp (start, g->name (), end - start) == 0) |
1bca9b1e AB |
2305 | { |
2306 | group = g; | |
2307 | break; | |
2308 | } | |
f9418c0f | 2309 | } |
6c7d17ba | 2310 | if (group != NULL) |
f9418c0f AC |
2311 | { |
2312 | int regnum; | |
abbb1732 | 2313 | |
f57d151a | 2314 | for (regnum = 0; |
f6efe3f8 | 2315 | regnum < gdbarch_num_cooked_regs (gdbarch); |
f57d151a | 2316 | regnum++) |
f9418c0f | 2317 | { |
a4bd449d UW |
2318 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2319 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2320 | gdb_stdout, frame, |
f9418c0f AC |
2321 | regnum, fpregs); |
2322 | } | |
2323 | continue; | |
2324 | } | |
2325 | } | |
c906108c | 2326 | |
f9418c0f | 2327 | /* Nothing matched. */ |
8a3fe4f8 | 2328 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2329 | } |
c906108c SS |
2330 | } |
2331 | ||
1dd5fedc | 2332 | static void |
1d12d88f | 2333 | info_all_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2334 | { |
2335 | registers_info (addr_exp, 1); | |
2336 | } | |
2337 | ||
a58dd373 | 2338 | static void |
1d12d88f | 2339 | info_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2340 | { |
2341 | registers_info (addr_exp, 0); | |
2342 | } | |
e76f1f2e AC |
2343 | |
2344 | static void | |
d80b854b | 2345 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2346 | struct frame_info *frame, const char *args) |
2347 | { | |
d80b854b UW |
2348 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2349 | ||
e76f1f2e AC |
2350 | if (gdbarch_print_vector_info_p (gdbarch)) |
2351 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2352 | else | |
2353 | { | |
2354 | int regnum; | |
2355 | int printed_something = 0; | |
ab4327e0 | 2356 | |
f6efe3f8 | 2357 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
e76f1f2e | 2358 | { |
f9418c0f | 2359 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2360 | { |
2361 | printed_something = 1; | |
e76f1f2e | 2362 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2363 | } |
2364 | } | |
2365 | if (!printed_something) | |
6cb06a8c | 2366 | gdb_printf (file, "No vector information\n"); |
e76f1f2e AC |
2367 | } |
2368 | } | |
2369 | ||
2370 | static void | |
1d12d88f | 2371 | info_vector_command (const char *args, int from_tty) |
e76f1f2e | 2372 | { |
9dccd06e | 2373 | if (!target_has_registers ()) |
206415a3 DJ |
2374 | error (_("The program has no registers now.")); |
2375 | ||
d80b854b | 2376 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2377 | } |
c906108c | 2378 | \f |
5fd62852 PA |
2379 | /* Kill the inferior process. Make us have no inferior. */ |
2380 | ||
2381 | static void | |
981a3fb3 | 2382 | kill_command (const char *arg, int from_tty) |
5fd62852 PA |
2383 | { |
2384 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2385 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2386 | some targets don't have processes! */ |
5fd62852 | 2387 | |
d7e15655 | 2388 | if (inferior_ptid == null_ptid) |
5fd62852 PA |
2389 | error (_("The program is not being run.")); |
2390 | if (!query (_("Kill the program being debugged? "))) | |
2391 | error (_("Not confirmed.")); | |
f67c0c91 | 2392 | |
249b5733 PA |
2393 | int pid = current_inferior ()->pid; |
2394 | /* Save the pid as a string before killing the inferior, since that | |
2395 | may unpush the current target, and we need the string after. */ | |
f2907e49 | 2396 | std::string pid_str = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
2397 | int infnum = current_inferior ()->num; |
2398 | ||
5fd62852 | 2399 | target_kill (); |
34fda50b | 2400 | bfd_cache_close_all (); |
5fd62852 | 2401 | |
f67c0c91 | 2402 | if (print_inferior_events) |
6cb06a8c TT |
2403 | gdb_printf (_("[Inferior %d (%s) killed]\n"), |
2404 | infnum, pid_str.c_str ()); | |
5fd62852 | 2405 | } |
c5aa993b | 2406 | |
08036331 | 2407 | /* Used in `attach&' command. Proceed threads of inferior INF iff |
74531fed | 2408 | they stopped due to debugger request, and when they did, they |
08036331 PA |
2409 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that |
2410 | have been explicitly been told to stop. */ | |
74531fed PA |
2411 | |
2412 | static void | |
08036331 | 2413 | proceed_after_attach (inferior *inf) |
74531fed PA |
2414 | { |
2415 | /* Don't error out if the current thread is running, because | |
2416 | there may be other stopped threads. */ | |
74531fed PA |
2417 | |
2418 | /* Backup current thread and selected frame. */ | |
5ed8105e | 2419 | scoped_restore_current_thread restore_thread; |
74531fed | 2420 | |
08036331 | 2421 | for (thread_info *thread : inf->non_exited_threads ()) |
611841bb | 2422 | if (!thread->executing () |
08036331 | 2423 | && !thread->stop_requested |
1edb66d8 | 2424 | && thread->stop_signal () == GDB_SIGNAL_0) |
08036331 PA |
2425 | { |
2426 | switch_to_thread (thread); | |
2427 | clear_proceed_status (0); | |
2428 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
2429 | } | |
74531fed PA |
2430 | } |
2431 | ||
6efcd9a8 | 2432 | /* See inferior.h. */ |
c906108c | 2433 | |
6efcd9a8 PA |
2434 | void |
2435 | setup_inferior (int from_tty) | |
9356cf8d | 2436 | { |
d6b48e9c | 2437 | struct inferior *inferior; |
9356cf8d | 2438 | |
d6b48e9c | 2439 | inferior = current_inferior (); |
6efcd9a8 | 2440 | inferior->needs_setup = 0; |
9356cf8d PA |
2441 | |
2442 | /* If no exec file is yet known, try to determine it from the | |
2443 | process itself. */ | |
a10de604 | 2444 | if (get_exec_file (0) == NULL) |
e99b03dc | 2445 | exec_file_locate_attach (inferior_ptid.pid (), 1, from_tty); |
9356cf8d PA |
2446 | else |
2447 | { | |
2448 | reopen_exec_file (); | |
9dec38d3 | 2449 | reread_symbols (from_tty); |
9356cf8d PA |
2450 | } |
2451 | ||
2452 | /* Take any necessary post-attaching actions for this platform. */ | |
e99b03dc | 2453 | target_post_attach (inferior_ptid.pid ()); |
9356cf8d | 2454 | |
a7aba266 | 2455 | post_create_inferior (from_tty); |
6efcd9a8 PA |
2456 | } |
2457 | ||
2458 | /* What to do after the first program stops after attaching. */ | |
2459 | enum attach_post_wait_mode | |
2460 | { | |
2461 | /* Do nothing. Leaves threads as they are. */ | |
2462 | ATTACH_POST_WAIT_NOTHING, | |
2463 | ||
2464 | /* Re-resume threads that are marked running. */ | |
2465 | ATTACH_POST_WAIT_RESUME, | |
2466 | ||
2467 | /* Stop all threads. */ | |
2468 | ATTACH_POST_WAIT_STOP, | |
2469 | }; | |
2470 | ||
2471 | /* Called after we've attached to a process and we've seen it stop for | |
6fee5eee TBA |
2472 | the first time. Resume, stop, or don't touch the threads according |
2473 | to MODE. */ | |
6efcd9a8 PA |
2474 | |
2475 | static void | |
27d0790a | 2476 | attach_post_wait (int from_tty, enum attach_post_wait_mode mode) |
6efcd9a8 PA |
2477 | { |
2478 | struct inferior *inferior; | |
9356cf8d | 2479 | |
6efcd9a8 PA |
2480 | inferior = current_inferior (); |
2481 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2482 | ||
2483 | if (inferior->needs_setup) | |
2484 | setup_inferior (from_tty); | |
2485 | ||
2486 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2487 | { |
2488 | /* The user requested an `attach&', so be sure to leave threads | |
2489 | that didn't get a signal running. */ | |
2490 | ||
6fee5eee | 2491 | /* Immediately resume all suspended threads of this inferior, |
74531fed PA |
2492 | and this inferior only. This should have no effect on |
2493 | already running threads. If a thread has been stopped with a | |
2494 | signal, leave it be. */ | |
2495 | if (non_stop) | |
08036331 | 2496 | proceed_after_attach (inferior); |
74531fed PA |
2497 | else |
2498 | { | |
1edb66d8 | 2499 | if (inferior_thread ()->stop_signal () == GDB_SIGNAL_0) |
74531fed | 2500 | { |
70509625 | 2501 | clear_proceed_status (0); |
64ce06e4 | 2502 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2503 | } |
2504 | } | |
2505 | } | |
6efcd9a8 | 2506 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2507 | { |
74531fed PA |
2508 | /* The user requested a plain `attach', so be sure to leave |
2509 | the inferior stopped. */ | |
2510 | ||
74531fed PA |
2511 | /* At least the current thread is already stopped. */ |
2512 | ||
2513 | /* In all-stop, by definition, all threads have to be already | |
2514 | stopped at this point. In non-stop, however, although the | |
2515 | selected thread is stopped, others may still be executing. | |
2516 | Be sure to explicitly stop all threads of the process. This | |
2517 | should have no effect on already stopped threads. */ | |
066f6b6e | 2518 | if (non_stop) |
f2907e49 | 2519 | target_stop (ptid_t (inferior->pid)); |
066f6b6e PA |
2520 | else if (target_is_non_stop_p ()) |
2521 | { | |
066f6b6e | 2522 | struct thread_info *lowest = inferior_thread (); |
066f6b6e | 2523 | |
4f5539f0 | 2524 | stop_all_threads ("attaching"); |
066f6b6e PA |
2525 | |
2526 | /* It's not defined which thread will report the attach | |
2527 | stop. For consistency, always select the thread with | |
2528 | lowest GDB number, which should be the main thread, if it | |
2529 | still exists. */ | |
08036331 PA |
2530 | for (thread_info *thread : current_inferior ()->non_exited_threads ()) |
2531 | if (thread->inf->num < lowest->inf->num | |
2532 | || thread->per_inf_num < lowest->per_inf_num) | |
2533 | lowest = thread; | |
066f6b6e | 2534 | |
00431a78 | 2535 | switch_to_thread (lowest); |
066f6b6e | 2536 | } |
74531fed PA |
2537 | |
2538 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2539 | normal_stop (); |
2540 | if (deprecated_attach_hook) | |
2541 | deprecated_attach_hook (); | |
2542 | } | |
2543 | } | |
2544 | ||
6efcd9a8 PA |
2545 | /* "attach" command entry point. Takes a program started up outside |
2546 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2547 | and allows us to start debugging it. */ | |
2548 | ||
c906108c | 2549 | void |
0b39b52e | 2550 | attach_command (const char *args, int from_tty) |
c906108c | 2551 | { |
6c4486e6 | 2552 | int async_exec; |
b3ccfe11 | 2553 | struct target_ops *attach_target; |
6efcd9a8 PA |
2554 | struct inferior *inferior = current_inferior (); |
2555 | enum attach_post_wait_mode mode; | |
c906108c | 2556 | |
c5aa993b | 2557 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2558 | |
1192f124 SM |
2559 | scoped_disable_commit_resumed disable_commit_resumed ("attaching"); |
2560 | ||
f5656ead | 2561 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2562 | /* Don't complain if all processes share the same symbol |
2563 | space. */ | |
8a305172 | 2564 | ; |
55f6301a | 2565 | else if (target_has_execution ()) |
c906108c | 2566 | { |
9e2f0ad4 | 2567 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2568 | target_kill (); |
2569 | else | |
8a3fe4f8 | 2570 | error (_("Not killed.")); |
c906108c SS |
2571 | } |
2572 | ||
fd79ecee DJ |
2573 | /* Clean up any leftovers from other runs. Some other things from |
2574 | this function should probably be moved into target_pre_inferior. */ | |
2575 | target_pre_inferior (from_tty); | |
2576 | ||
6be9a197 TT |
2577 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
2578 | args = stripped.get (); | |
8bc2fe48 | 2579 | |
b3ccfe11 TT |
2580 | attach_target = find_attach_target (); |
2581 | ||
8bc2fe48 PA |
2582 | prepare_execution_command (attach_target, async_exec); |
2583 | ||
f6ac5f3d | 2584 | if (non_stop && !attach_target->supports_non_stop ()) |
9908b566 VP |
2585 | error (_("Cannot attach to this target in non-stop mode")); |
2586 | ||
f6ac5f3d | 2587 | attach_target->attach (args, from_tty); |
b3ccfe11 TT |
2588 | /* to_attach should push the target, so after this point we |
2589 | shouldn't refer to attach_target again. */ | |
2590 | attach_target = NULL; | |
c906108c | 2591 | |
993248f4 AB |
2592 | if (debug_infrun) |
2593 | { | |
2594 | infrun_debug_printf ("immediately after attach:"); | |
2595 | for (thread_info *thread : inferior->non_exited_threads ()) | |
2596 | infrun_debug_printf (" thread %s, executing = %d, resumed = %d, " | |
2597 | "state = %s", | |
2598 | thread->ptid.to_string ().c_str (), | |
2599 | thread->executing (), | |
2600 | thread->resumed (), | |
2601 | thread_state_string (thread->state)); | |
2602 | } | |
2603 | ||
e05523bd JB |
2604 | /* Enable async mode if it is supported by the target. */ |
2605 | if (target_can_async_p ()) | |
2606 | target_async (1); | |
2607 | ||
c906108c SS |
2608 | /* Set up the "saved terminal modes" of the inferior |
2609 | based on what modes we are starting it with. */ | |
223ffa71 | 2610 | target_terminal::init (); |
c906108c | 2611 | |
7180e04a PA |
2612 | /* Install inferior's terminal modes. This may look like a no-op, |
2613 | as we've just saved them above, however, this does more than | |
2614 | restore terminal settings: | |
2615 | ||
2616 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2617 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2618 | stop would end up as a spurious Quit. | |
2619 | ||
2620 | - removes stdin from the event loop, which we need if attaching | |
2621 | in the foreground, otherwise on targets that report an initial | |
2622 | stop on attach (which are most) we'd process input/commands | |
2623 | while we're in the event loop waiting for that stop. That is, | |
2624 | before the attach continuation runs and the command is really | |
2625 | finished. */ | |
223ffa71 | 2626 | target_terminal::inferior (); |
7180e04a | 2627 | |
c906108c SS |
2628 | /* Set up execution context to know that we should return from |
2629 | wait_for_inferior as soon as the target reports a stop. */ | |
2630 | init_wait_for_inferior (); | |
c906108c | 2631 | |
6efcd9a8 PA |
2632 | inferior->needs_setup = 1; |
2633 | ||
fbea99ea | 2634 | if (target_is_non_stop_p ()) |
74531fed PA |
2635 | { |
2636 | /* If we find that the current thread isn't stopped, explicitly | |
2637 | do so now, because we're going to install breakpoints and | |
2638 | poke at memory. */ | |
2639 | ||
2640 | if (async_exec) | |
2641 | /* The user requested an `attach&'; stop just one thread. */ | |
2642 | target_stop (inferior_ptid); | |
2643 | else | |
2644 | /* The user requested an `attach', so stop all threads of this | |
2645 | inferior. */ | |
e99b03dc | 2646 | target_stop (ptid_t (inferior_ptid.pid ())); |
74531fed PA |
2647 | } |
2648 | ||
a2fedca9 PW |
2649 | /* Check for exec file mismatch, and let the user solve it. */ |
2650 | validate_exec_file (from_tty); | |
2651 | ||
6efcd9a8 PA |
2652 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2653 | ||
dc177b7a PA |
2654 | /* Some system don't generate traps when attaching to inferior. |
2655 | E.g. Mach 3 or GNU hurd. */ | |
f6ac5f3d | 2656 | if (!target_attach_no_wait ()) |
c5aa993b | 2657 | { |
1777feb0 | 2658 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2659 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2660 | need a way for handle_inferior_event to reset the stop_signal | |
2661 | variable after an attach, and this is what | |
2662 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2663 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2664 | |
3b12939d | 2665 | /* Wait for stop. */ |
4efeb0d3 | 2666 | inferior->add_continuation ([=] () |
c4c493de TBA |
2667 | { |
2668 | attach_post_wait (from_tty, mode); | |
2669 | }); | |
0b333c5e | 2670 | |
5b6d1e4f PA |
2671 | /* Let infrun consider waiting for events out of this |
2672 | target. */ | |
2673 | inferior->process_target ()->threads_executing = true; | |
2674 | ||
0b333c5e PA |
2675 | if (!target_is_async_p ()) |
2676 | mark_infrun_async_event_handler (); | |
2677 | return; | |
dc177b7a | 2678 | } |
5b6d1e4f | 2679 | else |
27d0790a | 2680 | attach_post_wait (from_tty, mode); |
1192f124 SM |
2681 | |
2682 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2683 | } |
2684 | ||
1941c569 PA |
2685 | /* We had just found out that the target was already attached to an |
2686 | inferior. PTID points at a thread of this new inferior, that is | |
2687 | the most likely to be stopped right now, but not necessarily so. | |
2688 | The new inferior is assumed to be already added to the inferior | |
2689 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2690 | this inferior running, except those we've explicitly seen reported | |
2691 | as stopped. */ | |
2692 | ||
2693 | void | |
8a82de58 | 2694 | notice_new_inferior (thread_info *thr, bool leave_running, int from_tty) |
1941c569 | 2695 | { |
5ed8105e PA |
2696 | enum attach_post_wait_mode mode |
2697 | = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; | |
1941c569 | 2698 | |
5ed8105e | 2699 | gdb::optional<scoped_restore_current_thread> restore_thread; |
1941c569 | 2700 | |
5ed8105e PA |
2701 | if (inferior_ptid != null_ptid) |
2702 | restore_thread.emplace (); | |
1941c569 | 2703 | |
6efcd9a8 PA |
2704 | /* Avoid reading registers -- we haven't fetched the target |
2705 | description yet. */ | |
00431a78 | 2706 | switch_to_thread_no_regs (thr); |
1941c569 PA |
2707 | |
2708 | /* When we "notice" a new inferior we need to do all the things we | |
2709 | would normally do if we had just attached to it. */ | |
2710 | ||
611841bb | 2711 | if (thr->executing ()) |
1941c569 PA |
2712 | { |
2713 | struct inferior *inferior = current_inferior (); | |
2714 | ||
2715 | /* We're going to install breakpoints, and poke at memory, | |
2716 | ensure that the inferior is stopped for a moment while we do | |
2717 | that. */ | |
2718 | target_stop (inferior_ptid); | |
2719 | ||
16c381f0 | 2720 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2721 | |
2722 | /* Wait for stop before proceeding. */ | |
4efeb0d3 | 2723 | inferior->add_continuation ([=] () |
c4c493de TBA |
2724 | { |
2725 | attach_post_wait (from_tty, mode); | |
2726 | }); | |
1941c569 | 2727 | |
0b333c5e | 2728 | return; |
1941c569 PA |
2729 | } |
2730 | ||
27d0790a | 2731 | attach_post_wait (from_tty, mode); |
1941c569 PA |
2732 | } |
2733 | ||
c906108c SS |
2734 | /* |
2735 | * detach_command -- | |
2736 | * takes a program previously attached to and detaches it. | |
2737 | * The program resumes execution and will no longer stop | |
2738 | * on signals, etc. We better not have left any breakpoints | |
2739 | * in the program or it'll die when it hits one. For this | |
2740 | * to work, it may be necessary for the process to have been | |
2741 | * previously attached. It *might* work if the program was | |
2742 | * started via the normal ptrace (PTRACE_TRACEME). | |
2743 | */ | |
2744 | ||
6418d433 | 2745 | void |
981a3fb3 | 2746 | detach_command (const char *args, int from_tty) |
c906108c | 2747 | { |
1f5d0fc9 | 2748 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a | 2749 | |
d7e15655 | 2750 | if (inferior_ptid == null_ptid) |
d729566a PA |
2751 | error (_("The program is not being run.")); |
2752 | ||
1192f124 SM |
2753 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); |
2754 | ||
2f9d54cf PA |
2755 | query_if_trace_running (from_tty); |
2756 | ||
2757 | disconnect_tracing (); | |
d5551862 | 2758 | |
408f6686 PA |
2759 | /* Hold a strong reference to the target while (maybe) |
2760 | detaching the parent. Otherwise detaching could close the | |
2761 | target. */ | |
2762 | auto target_ref | |
2763 | = target_ops_ref::new_reference (current_inferior ()->process_target ()); | |
2764 | ||
2765 | /* Save this before detaching, since detaching may unpush the | |
2766 | process_stratum target. */ | |
2767 | bool was_non_stop_p = target_is_non_stop_p (); | |
2768 | ||
6e1e1966 | 2769 | target_detach (current_inferior (), from_tty); |
50c71eaf | 2770 | |
63000888 PA |
2771 | /* The current inferior process was just detached successfully. Get |
2772 | rid of breakpoints that no longer make sense. Note we don't do | |
2773 | this within target_detach because that is also used when | |
2774 | following child forks, and in that case we will want to transfer | |
2775 | breakpoints to the child, not delete them. */ | |
2776 | breakpoint_init_inferior (inf_exited); | |
2777 | ||
50c71eaf PA |
2778 | /* If the solist is global across inferiors, don't clear it when we |
2779 | detach from a single inferior. */ | |
f5656ead | 2780 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 2781 | no_shared_libraries (NULL, from_tty); |
8a305172 | 2782 | |
9a4105ab AC |
2783 | if (deprecated_detach_hook) |
2784 | deprecated_detach_hook (); | |
408f6686 PA |
2785 | |
2786 | if (!was_non_stop_p) | |
2787 | restart_after_all_stop_detach (as_process_stratum_target (target_ref.get ())); | |
1192f124 SM |
2788 | |
2789 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2790 | } |
2791 | ||
6ad8ae5c DJ |
2792 | /* Disconnect from the current target without resuming it (leaving it |
2793 | waiting for a debugger). | |
2794 | ||
2795 | We'd better not have left any breakpoints in the program or the | |
2796 | next debugger will get confused. Currently only supported for some | |
2797 | remote targets, since the normal attach mechanisms don't work on | |
2798 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
2799 | ||
2800 | static void | |
0b39b52e | 2801 | disconnect_command (const char *args, int from_tty) |
6ad8ae5c | 2802 | { |
1777feb0 | 2803 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
2804 | query_if_trace_running (from_tty); |
2805 | disconnect_tracing (); | |
6ad8ae5c | 2806 | target_disconnect (args, from_tty); |
e85a822c | 2807 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 2808 | init_thread_list (); |
9a4105ab AC |
2809 | if (deprecated_detach_hook) |
2810 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
2811 | } |
2812 | ||
5b6d1e4f PA |
2813 | /* Stop PTID in the current target, and tag the PTID threads as having |
2814 | been explicitly requested to stop. PTID can be a thread, a | |
2815 | process, or minus_one_ptid, meaning all threads of all inferiors of | |
2816 | the current target. */ | |
e42de8c7 | 2817 | |
5b6d1e4f PA |
2818 | static void |
2819 | stop_current_target_threads_ns (ptid_t ptid) | |
2820 | { | |
2821 | target_stop (ptid); | |
252fbfc8 PA |
2822 | |
2823 | /* Tag the thread as having been explicitly requested to stop, so | |
2824 | other parts of gdb know not to resume this thread automatically, | |
2825 | if it was stopped due to an internal event. Limit this to | |
2826 | non-stop mode, as when debugging a multi-threaded application in | |
2827 | all-stop mode, we will only get one stop event --- it's undefined | |
2828 | which thread will report the event. */ | |
5b6d1e4f PA |
2829 | set_stop_requested (current_inferior ()->process_target (), |
2830 | ptid, 1); | |
2831 | } | |
2832 | ||
2833 | /* See inferior.h. */ | |
2834 | ||
2835 | void | |
2836 | interrupt_target_1 (bool all_threads) | |
2837 | { | |
1192f124 SM |
2838 | scoped_disable_commit_resumed disable_commit_resumed ("interrupting"); |
2839 | ||
252fbfc8 | 2840 | if (non_stop) |
5b6d1e4f PA |
2841 | { |
2842 | if (all_threads) | |
2843 | { | |
2844 | scoped_restore_current_thread restore_thread; | |
2845 | ||
2846 | for (inferior *inf : all_inferiors ()) | |
2847 | { | |
2848 | switch_to_inferior_no_thread (inf); | |
2849 | stop_current_target_threads_ns (minus_one_ptid); | |
2850 | } | |
2851 | } | |
2852 | else | |
2853 | stop_current_target_threads_ns (inferior_ptid); | |
2854 | } | |
2855 | else | |
2856 | target_interrupt (); | |
1192f124 SM |
2857 | |
2858 | disable_commit_resumed.reset_and_commit (); | |
77ebaa5a VP |
2859 | } |
2860 | ||
6339bfc4 DE |
2861 | /* interrupt [-a] |
2862 | Stop the execution of the target while running in async mode, in | |
17e5269b | 2863 | the background. In all-stop, stop the whole process. In non-stop |
8cae4b3f PA |
2864 | mode, stop the current thread only by default, or stop all threads |
2865 | if the `-a' switch is used. */ | |
2866 | ||
1dd5fedc | 2867 | static void |
0b39b52e | 2868 | interrupt_command (const char *args, int from_tty) |
43ff13b4 | 2869 | { |
362646f5 | 2870 | if (target_can_async_p ()) |
43ff13b4 | 2871 | { |
8cae4b3f PA |
2872 | int all_threads = 0; |
2873 | ||
1777feb0 | 2874 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 2875 | |
8cae4b3f | 2876 | if (args != NULL |
61012eef | 2877 | && startswith (args, "-a")) |
8cae4b3f PA |
2878 | all_threads = 1; |
2879 | ||
2880 | if (!non_stop && all_threads) | |
2881 | error (_("-a is meaningless in all-stop mode.")); | |
2882 | ||
77ebaa5a | 2883 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
2884 | } |
2885 | } | |
2886 | ||
cc86d1cb YQ |
2887 | /* See inferior.h. */ |
2888 | ||
2889 | void | |
2890 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
2891 | struct frame_info *frame, const char *args) | |
c906108c | 2892 | { |
cc86d1cb YQ |
2893 | int regnum; |
2894 | int printed_something = 0; | |
d80b854b | 2895 | |
f6efe3f8 | 2896 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
23e3a7ac | 2897 | { |
cc86d1cb | 2898 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 2899 | { |
cc86d1cb YQ |
2900 | printed_something = 1; |
2901 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 2902 | } |
23e3a7ac | 2903 | } |
cc86d1cb | 2904 | if (!printed_something) |
6cb06a8c TT |
2905 | gdb_printf (file, "No floating-point info " |
2906 | "available for this processor.\n"); | |
23e3a7ac AC |
2907 | } |
2908 | ||
2909 | static void | |
1d12d88f | 2910 | info_float_command (const char *args, int from_tty) |
23e3a7ac | 2911 | { |
cc86d1cb YQ |
2912 | struct frame_info *frame; |
2913 | ||
9dccd06e | 2914 | if (!target_has_registers ()) |
206415a3 DJ |
2915 | error (_("The program has no registers now.")); |
2916 | ||
cc86d1cb YQ |
2917 | frame = get_selected_frame (NULL); |
2918 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
2919 | } |
2920 | \f | |
145b16a9 UW |
2921 | /* Implement `info proc' family of commands. */ |
2922 | ||
2923 | static void | |
69f476a3 | 2924 | info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty) |
145b16a9 | 2925 | { |
3030c96e UW |
2926 | struct gdbarch *gdbarch = get_current_arch (); |
2927 | ||
451b7c33 TT |
2928 | if (!target_info_proc (args, what)) |
2929 | { | |
2930 | if (gdbarch_info_proc_p (gdbarch)) | |
2931 | gdbarch_info_proc (gdbarch, args, what); | |
2932 | else | |
2933 | error (_("Not supported on this target.")); | |
2934 | } | |
145b16a9 UW |
2935 | } |
2936 | ||
85102364 | 2937 | /* Implement `info proc' when given without any further parameters. */ |
145b16a9 UW |
2938 | |
2939 | static void | |
981a3fb3 | 2940 | info_proc_cmd (const char *args, int from_tty) |
145b16a9 UW |
2941 | { |
2942 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
2943 | } | |
2944 | ||
2945 | /* Implement `info proc mappings'. */ | |
2946 | ||
2947 | static void | |
69f476a3 | 2948 | info_proc_cmd_mappings (const char *args, int from_tty) |
145b16a9 UW |
2949 | { |
2950 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
2951 | } | |
2952 | ||
2953 | /* Implement `info proc stat'. */ | |
2954 | ||
2955 | static void | |
69f476a3 | 2956 | info_proc_cmd_stat (const char *args, int from_tty) |
145b16a9 UW |
2957 | { |
2958 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
2959 | } | |
2960 | ||
2961 | /* Implement `info proc status'. */ | |
2962 | ||
2963 | static void | |
69f476a3 | 2964 | info_proc_cmd_status (const char *args, int from_tty) |
145b16a9 UW |
2965 | { |
2966 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
2967 | } | |
2968 | ||
2969 | /* Implement `info proc cwd'. */ | |
2970 | ||
2971 | static void | |
69f476a3 | 2972 | info_proc_cmd_cwd (const char *args, int from_tty) |
145b16a9 UW |
2973 | { |
2974 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
2975 | } | |
2976 | ||
2977 | /* Implement `info proc cmdline'. */ | |
2978 | ||
2979 | static void | |
69f476a3 | 2980 | info_proc_cmd_cmdline (const char *args, int from_tty) |
145b16a9 UW |
2981 | { |
2982 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
2983 | } | |
2984 | ||
2985 | /* Implement `info proc exe'. */ | |
2986 | ||
2987 | static void | |
69f476a3 | 2988 | info_proc_cmd_exe (const char *args, int from_tty) |
145b16a9 UW |
2989 | { |
2990 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
2991 | } | |
2992 | ||
e98ee8c4 JB |
2993 | /* Implement `info proc files'. */ |
2994 | ||
2995 | static void | |
2996 | info_proc_cmd_files (const char *args, int from_tty) | |
2997 | { | |
2998 | info_proc_cmd_1 (args, IP_FILES, from_tty); | |
2999 | } | |
3000 | ||
145b16a9 UW |
3001 | /* Implement `info proc all'. */ |
3002 | ||
3003 | static void | |
69f476a3 | 3004 | info_proc_cmd_all (const char *args, int from_tty) |
145b16a9 UW |
3005 | { |
3006 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
3007 | } | |
3008 | ||
000439d5 TT |
3009 | /* Implement `show print finish'. */ |
3010 | ||
3011 | static void | |
3012 | show_print_finish (struct ui_file *file, int from_tty, | |
3013 | struct cmd_list_element *c, | |
3014 | const char *value) | |
3015 | { | |
6cb06a8c | 3016 | gdb_printf (file, _("\ |
000439d5 | 3017 | Printing of return value after `finish' is %s.\n"), |
6cb06a8c | 3018 | value); |
000439d5 TT |
3019 | } |
3020 | ||
3021 | ||
4e5a4f58 JB |
3022 | /* This help string is used for the run, start, and starti commands. |
3023 | It is defined as a macro to prevent duplication. */ | |
3024 | ||
3025 | #define RUN_ARGS_HELP \ | |
3026 | "You may specify arguments to give it.\n\ | |
3027 | Args may include \"*\", or \"[...]\"; they are expanded using the\n\ | |
3028 | shell that will start the program (specified by the \"$SHELL\" environment\n\ | |
3029 | variable). Input and output redirection with \">\", \"<\", or \">>\"\n\ | |
3030 | are also allowed.\n\ | |
3031 | \n\ | |
3032 | With no arguments, uses arguments last specified (with \"run\" or \n\ | |
3033 | \"set args\"). To cancel previous arguments and run with no arguments,\n\ | |
3034 | use \"set args\" without arguments.\n\ | |
3035 | \n\ | |
3036 | To start the inferior without using a shell, use \"set startup-with-shell off\"." | |
3037 | ||
6c265988 | 3038 | void _initialize_infcmd (); |
c906108c | 3039 | void |
6c265988 | 3040 | _initialize_infcmd () |
c906108c | 3041 | { |
145b16a9 | 3042 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3043 | struct cmd_list_element *c = NULL; |
6f937416 | 3044 | const char *cmd_name; |
3cb3b8df | 3045 | |
1777feb0 | 3046 | /* Add the filename of the terminal connected to inferior I/O. */ |
0a1ddfa6 SM |
3047 | add_setshow_optional_filename_cmd ("inferior-tty", class_run, |
3048 | &inferior_io_terminal_scratch, _("\ | |
3cb3b8df BR |
3049 | Set terminal for future runs of program being debugged."), _("\ |
3050 | Show terminal for future runs of program being debugged."), _("\ | |
0a1ddfa6 SM |
3051 | Usage: set inferior-tty [TTY]\n\n\ |
3052 | If TTY is omitted, the default behavior of using the same terminal as GDB\n\ | |
3053 | is restored."), | |
3054 | set_inferior_tty_command, | |
3055 | show_inferior_tty_command, | |
3056 | &setlist, &showlist); | |
21873064 | 3057 | cmd_name = "inferior-tty"; |
cf00cd6f | 3058 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
21873064 | 3059 | gdb_assert (c != NULL); |
57b4f16e | 3060 | add_alias_cmd ("tty", c, class_run, 0, &cmdlist); |
c906108c | 3061 | |
6ace3df1 YQ |
3062 | cmd_name = "args"; |
3063 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3064 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3065 | Set argument list to give program being debugged when it is started."), _("\ |
3066 | Show argument list to give program being debugged when it is started."), _("\ | |
3067 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3068 | set_args_command, |
3069 | show_args_command, | |
3070 | &setlist, &showlist); | |
cf00cd6f | 3071 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
6ace3df1 YQ |
3072 | gdb_assert (c != NULL); |
3073 | set_cmd_completer (c, filename_completer); | |
c906108c | 3074 | |
d092c5a2 SDJ |
3075 | cmd_name = "cwd"; |
3076 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3077 | &inferior_cwd_scratch, _("\ | |
3078 | Set the current working directory to be used when the inferior is started.\n\ | |
3079 | Changing this setting does not have any effect on inferiors that are\n\ | |
3080 | already running."), | |
3081 | _("\ | |
3082 | Show the current working directory that is used when the inferior is started."), | |
3083 | _("\ | |
3084 | Use this command to change the current working directory that will be used\n\ | |
3085 | when the inferior is started. This setting does not affect GDB's current\n\ | |
3086 | working directory."), | |
3087 | set_cwd_command, | |
3088 | show_cwd_command, | |
3089 | &setlist, &showlist); | |
cf00cd6f | 3090 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
d092c5a2 SDJ |
3091 | gdb_assert (c != NULL); |
3092 | set_cmd_completer (c, filename_completer); | |
3093 | ||
1a966eab AC |
3094 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3095 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3096 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3097 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3098 | environment to be given to the program."), &showlist); |
5ba2abeb | 3099 | set_cmd_completer (c, noop_completer); |
c906108c | 3100 | |
0743fc83 TT |
3101 | add_basic_prefix_cmd ("unset", no_class, |
3102 | _("Complement to certain \"set\" commands."), | |
2f822da5 | 3103 | &unsetlist, 0, &cmdlist); |
c5aa993b | 3104 | |
1a966eab AC |
3105 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3106 | Cancel environment variable VAR for the program.\n\ | |
3107 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3108 | &unsetlist); |
5ba2abeb | 3109 | set_cmd_completer (c, noop_completer); |
c906108c | 3110 | |
1a966eab AC |
3111 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3112 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3113 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3114 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3115 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3116 | &setlist); |
5ba2abeb | 3117 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3118 | |
1bedd215 AC |
3119 | c = add_com ("path", class_files, path_command, _("\ |
3120 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3121 | $cwd in the path means the current working directory.\n\ |
3122 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3123 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3124 | fully linked executable files and separately compiled object files as \ |
3125 | needed.")); | |
5ba2abeb | 3126 | set_cmd_completer (c, filename_completer); |
c906108c | 3127 | |
1a966eab AC |
3128 | c = add_cmd ("paths", no_class, path_info, _("\ |
3129 | Current search path for finding object files.\n\ | |
c906108c SS |
3130 | $cwd in the path means the current working directory.\n\ |
3131 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3132 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3133 | fully linked executable files and separately compiled object files as \ |
3134 | needed."), | |
c906108c | 3135 | &showlist); |
5ba2abeb | 3136 | set_cmd_completer (c, noop_completer); |
c906108c | 3137 | |
2277426b PA |
3138 | add_prefix_cmd ("kill", class_run, kill_command, |
3139 | _("Kill execution of program being debugged."), | |
2f822da5 | 3140 | &killlist, 0, &cmdlist); |
5fd62852 | 3141 | |
1bedd215 AC |
3142 | add_com ("attach", class_run, attach_command, _("\ |
3143 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3144 | This command attaches to another target, of the same type as your last\n\ |
3145 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3146 | The command may take as argument a process id or a device file.\n\ | |
3147 | For a process id, you must have permission to send the process a signal,\n\ | |
3148 | and it must have the same effective uid as the debugger.\n\ | |
3149 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3150 | program running in the process, looking first in the current working\n\ | |
3151 | directory, or (if not found there) using the source file search path\n\ | |
3152 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3153 | to specify the program, and to load its symbol table.")); |
c906108c | 3154 | |
f73adfeb | 3155 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3156 | Detach a process or file previously attached.\n\ |
c906108c | 3157 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb | 3158 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
2f822da5 | 3159 | &detachlist, 0, &cmdlist); |
c906108c | 3160 | |
1bedd215 AC |
3161 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3162 | Disconnect from a target.\n\ | |
6ad8ae5c | 3163 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3164 | all targets.")); |
6ad8ae5c | 3165 | |
de0bea00 | 3166 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3167 | Continue program with the specified signal.\n\ |
3168 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3169 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3170 | \n\ |
3171 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3172 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3173 | and you want to resume the program while discarding the signal.\n\ |
3174 | \n\ | |
3175 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3176 | the current thread only.")); | |
3177 | set_cmd_completer (c, signal_completer); | |
3178 | ||
3179 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3180 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3181 | Usage: queue-signal SIGNAL\n\ | |
3182 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3183 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3184 | \n\ | |
3185 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3186 | the current thread. This is useful in cases where the program stopped\n\ | |
3187 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3188 | \n\ | |
3189 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3190 | the current thread only.")); | |
de0bea00 | 3191 | set_cmd_completer (c, signal_completer); |
c906108c | 3192 | |
3947f654 SM |
3193 | cmd_list_element *stepi_cmd |
3194 | = add_com ("stepi", class_run, stepi_command, _("\ | |
1bedd215 | 3195 | Step one instruction exactly.\n\ |
486c7739 MF |
3196 | Usage: stepi [N]\n\ |
3197 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3198 | reason).")); |
3947f654 | 3199 | add_com_alias ("si", stepi_cmd, class_run, 0); |
c906108c | 3200 | |
3947f654 SM |
3201 | cmd_list_element *nexti_cmd |
3202 | = add_com ("nexti", class_run, nexti_command, _("\ | |
1bedd215 | 3203 | Step one instruction, but proceed through subroutine calls.\n\ |
486c7739 MF |
3204 | Usage: nexti [N]\n\ |
3205 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3206 | reason).")); |
3947f654 | 3207 | add_com_alias ("ni", nexti_cmd, class_run, 0); |
c906108c | 3208 | |
3947f654 SM |
3209 | cmd_list_element *finish_cmd |
3210 | = add_com ("finish", class_run, finish_command, _("\ | |
1bedd215 | 3211 | Execute until selected stack frame returns.\n\ |
486c7739 | 3212 | Usage: finish\n\ |
1bedd215 | 3213 | Upon return, the value returned is printed and put in the value history.")); |
3947f654 | 3214 | add_com_alias ("fin", finish_cmd, class_run, 1); |
c906108c | 3215 | |
3947f654 SM |
3216 | cmd_list_element *next_cmd |
3217 | = add_com ("next", class_run, next_command, _("\ | |
1bedd215 | 3218 | Step program, proceeding through subroutine calls.\n\ |
486c7739 MF |
3219 | Usage: next [N]\n\ |
3220 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3221 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3222 | the call, in effect treating it as a single source line.")); |
3947f654 | 3223 | add_com_alias ("n", next_cmd, class_run, 1); |
c906108c | 3224 | |
3947f654 SM |
3225 | cmd_list_element *step_cmd |
3226 | = add_com ("step", class_run, step_command, _("\ | |
1bedd215 | 3227 | Step program until it reaches a different source line.\n\ |
486c7739 MF |
3228 | Usage: step [N]\n\ |
3229 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3230 | reason).")); |
3947f654 | 3231 | add_com_alias ("s", step_cmd, class_run, 1); |
c906108c | 3232 | |
3947f654 SM |
3233 | cmd_list_element *until_cmd |
3234 | = add_com ("until", class_run, until_command, _("\ | |
590042fc | 3235 | Execute until past the current line or past a LOCATION.\n\ |
1bedd215 | 3236 | Execute until the program reaches a source line greater than the current\n\ |
3e43a32a MS |
3237 | or a specified location (same args as break command) within the current \ |
3238 | frame.")); | |
3947f654 SM |
3239 | set_cmd_completer (until_cmd, location_completer); |
3240 | add_com_alias ("u", until_cmd, class_run, 1); | |
c5aa993b | 3241 | |
1bedd215 | 3242 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3243 | Continue the program up to the given location (same form as args for break \ |
3244 | command).\n\ | |
1bedd215 | 3245 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3246 | set_cmd_completer (c, location_completer); |
3247 | ||
3947f654 SM |
3248 | cmd_list_element *jump_cmd |
3249 | = add_com ("jump", class_run, jump_command, _("\ | |
1bedd215 | 3250 | Continue program being debugged at specified line or address.\n\ |
0a8ba311 | 3251 | Usage: jump LOCATION\n\ |
c906108c | 3252 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3253 | for an address to start at.")); |
3947f654 SM |
3254 | set_cmd_completer (jump_cmd, location_completer); |
3255 | add_com_alias ("j", jump_cmd, class_run, 1); | |
c906108c | 3256 | |
3947f654 SM |
3257 | cmd_list_element *continue_cmd |
3258 | = add_com ("continue", class_run, continue_command, _("\ | |
1bedd215 | 3259 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3260 | Usage: continue [N]\n\ |
c906108c SS |
3261 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3262 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3263 | the breakpoint won't break until the Nth time it is reached).\n\ |
3264 | \n\ | |
3265 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3266 | otherwise all the threads in the program are continued. To \n\ | |
3267 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3268 | Specifying -a and an ignore count simultaneously is an error.")); | |
3947f654 SM |
3269 | add_com_alias ("c", continue_cmd, class_run, 1); |
3270 | add_com_alias ("fg", continue_cmd, class_run, 1); | |
c906108c | 3271 | |
3947f654 SM |
3272 | cmd_list_element *run_cmd |
3273 | = add_com ("run", class_run, run_command, _("\ | |
4e5a4f58 JB |
3274 | Start debugged program.\n" |
3275 | RUN_ARGS_HELP)); | |
3947f654 SM |
3276 | set_cmd_completer (run_cmd, filename_completer); |
3277 | add_com_alias ("r", run_cmd, class_run, 1); | |
c906108c | 3278 | |
1bedd215 | 3279 | c = add_com ("start", class_run, start_command, _("\ |
4e5a4f58 JB |
3280 | Start the debugged program stopping at the beginning of the main procedure.\n" |
3281 | RUN_ARGS_HELP)); | |
3282 | set_cmd_completer (c, filename_completer); | |
3283 | ||
3284 | c = add_com ("starti", class_run, starti_command, _("\ | |
3285 | Start the debugged program stopping at the first instruction.\n" | |
3286 | RUN_ARGS_HELP)); | |
a4d5f2e0 JB |
3287 | set_cmd_completer (c, filename_completer); |
3288 | ||
0a07590b | 3289 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3290 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3291 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3292 | otherwise all the threads in the program are stopped. To \n\ | |
3293 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3294 | |
e0f25bd9 SM |
3295 | cmd_list_element *info_registers_cmd |
3296 | = add_info ("registers", info_registers_command, _("\ | |
1bedd215 | 3297 | List of integer registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3298 | One or more register names as argument means describe the given registers.\n\ |
3299 | One or more register group names as argument means describe the registers\n\ | |
3300 | in the named register groups.")); | |
e0f25bd9 SM |
3301 | add_info_alias ("r", info_registers_cmd, 1); |
3302 | set_cmd_completer (info_registers_cmd, reg_or_group_completer); | |
c906108c | 3303 | |
11db9430 | 3304 | c = add_info ("all-registers", info_all_registers_command, _("\ |
1bedd215 | 3305 | List of all registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3306 | One or more register names as argument means describe the given registers.\n\ |
3307 | One or more register group names as argument means describe the registers\n\ | |
3308 | in the named register groups.")); | |
71c24708 | 3309 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3310 | |
11db9430 | 3311 | add_info ("program", info_program_command, |
1bedd215 | 3312 | _("Execution status of the program.")); |
c906108c | 3313 | |
11db9430 | 3314 | add_info ("float", info_float_command, |
590042fc | 3315 | _("Print the status of the floating point unit.")); |
c906108c | 3316 | |
11db9430 | 3317 | add_info ("vector", info_vector_command, |
590042fc | 3318 | _("Print the status of the vector unit.")); |
145b16a9 UW |
3319 | |
3320 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3321 | _("\ | |
73f1bd76 | 3322 | Show additional information about a process.\n\ |
145b16a9 | 3323 | Specify any process id, or use the program being debugged by default."), |
2f822da5 | 3324 | &info_proc_cmdlist, |
145b16a9 UW |
3325 | 1/*allow-unknown*/, &infolist); |
3326 | ||
3327 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
73f1bd76 | 3328 | List memory regions mapped by the specified process."), |
145b16a9 UW |
3329 | &info_proc_cmdlist); |
3330 | ||
3331 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3332 | List process info from /proc/PID/stat."), | |
3333 | &info_proc_cmdlist); | |
3334 | ||
3335 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3336 | List process info from /proc/PID/status."), | |
3337 | &info_proc_cmdlist); | |
3338 | ||
3339 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
73f1bd76 | 3340 | List current working directory of the specified process."), |
145b16a9 UW |
3341 | &info_proc_cmdlist); |
3342 | ||
3343 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
73f1bd76 | 3344 | List command line arguments of the specified process."), |
145b16a9 UW |
3345 | &info_proc_cmdlist); |
3346 | ||
3347 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
73f1bd76 | 3348 | List absolute filename for executable of the specified process."), |
145b16a9 UW |
3349 | &info_proc_cmdlist); |
3350 | ||
e98ee8c4 JB |
3351 | add_cmd ("files", class_info, info_proc_cmd_files, _("\ |
3352 | List files opened by the specified process."), | |
3353 | &info_proc_cmdlist); | |
3354 | ||
145b16a9 | 3355 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ |
73f1bd76 | 3356 | List all available info about the specified process."), |
145b16a9 | 3357 | &info_proc_cmdlist); |
000439d5 TT |
3358 | |
3359 | add_setshow_boolean_cmd ("finish", class_support, | |
3360 | &user_print_options.finish_print, _("\ | |
3361 | Set whether `finish' prints the return value."), _("\ | |
3362 | Show whether `finish' prints the return value."), NULL, | |
3363 | NULL, | |
3364 | show_print_finish, | |
3365 | &setprintlist, &showprintlist); | |
c906108c | 3366 | } |